/* roulang page: index */
:root{
  --ink-950:#05070F;
  --ink-900:#0A0F1F;
  --ink-800:#121A32;
  --ink-700:#1B2544;
  --primary:#35D0FF;
  --primary-light:#6FE2FF;
  --primary-dark:#1F9CC7;
  --violet:#8B6BFF;
  --reward:#FFC24B;
  --danger:#FF6B6B;
  --text-1:#E9F0FF;
  --text-2:#A6B4D6;
  --text-3:#6B7A9E;
  --line:rgba(130,165,255,.14);
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:20px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --glass-bg:linear-gradient(160deg, rgba(28,40,80,.55), rgba(10,16,36,.35));
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  min-height:100vh;
  background:transparent;
  color:var(--text-1);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  pointer-events:none;
  background:
    radial-gradient(900px 620px at 12% -6%, rgba(53,208,255,.16), transparent 60%),
    radial-gradient(820px 560px at 88% 6%, rgba(139,107,255,.18), transparent 62%),
    radial-gradient(760px 540px at 50% 108%, rgba(53,208,255,.09), transparent 60%),
    linear-gradient(180deg,#05070F 0%, #0A0F1F 46%, #05070F 100%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  opacity:.55;
  background-image:
    radial-gradient(1.6px 1.6px at 24px 36px, rgba(255,255,255,.34), transparent 60%),
    radial-gradient(1.2px 1.2px at 148px 96px, rgba(255,255,255,.20), transparent 60%),
    radial-gradient(1.4px 1.4px at 240px 190px, rgba(111,226,255,.26), transparent 60%),
    radial-gradient(1.1px 1.1px at 320px 60px, rgba(139,107,255,.24), transparent 60%);
  background-size:280px 280px, 360px 360px, 440px 440px, 520px 520px;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit;background:none;border:0}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid rgba(53,208,255,.45);outline-offset:2px;border-radius:8px}
::selection{background:rgba(53,208,255,.28);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (max-width:767px){.container{padding:0 16px}}

.num{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.t2{color:var(--text-2)}
.t3{color:var(--text-3)}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:linear-gradient(180deg, rgba(5,7,15,.86), rgba(5,7,15,.42));
  backdrop-filter:blur(10px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.site-header.scrolled{
  background:linear-gradient(180deg, rgba(7,10,22,.94), rgba(7,10,22,.78));
  border-bottom-color:var(--line);
  box-shadow:0 12px 32px -24px rgba(0,0,0,.95);
}
.nav-row{display:flex;align-items:center;gap:20px;padding:14px 0 10px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg, rgba(53,208,255,.22), rgba(139,107,255,.28));
  border:1px solid rgba(53,208,255,.32);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08), 0 0 22px -10px rgba(53,208,255,.7);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.brand-text span{color:var(--primary)}
.nav-search{
  flex:1 1 auto;
  max-width:520px;
  min-width:0;
  display:flex;
  align-items:center;
  gap:10px;
  padding:8px 8px 8px 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(28,40,80,.5), rgba(10,16,36,.4));
  transition:border-color .25s ease, box-shadow .25s ease;
}
.nav-search:focus-within{border-color:rgba(53,208,255,.6);box-shadow:0 0 0 3px rgba(53,208,255,.14)}
.nav-search input{flex:1;min-width:0;font-size:14px;color:var(--text-1)}
.nav-search input::placeholder{color:var(--text-3)}
.search-btn{
  flex-shrink:0;
  padding:9px 20px;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  color:#04121C;
  background:linear-gradient(100deg,#35D0FF,#8B6BFF);
  box-shadow:0 0 20px -8px rgba(53,208,255,.7);
  cursor:pointer;
  transition:filter .2s ease, transform .2s ease;
}
.search-btn:hover{filter:brightness(1.08)}
.search-btn:active{transform:translateY(1px)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex-shrink:0}
.nav-chips{display:flex;align-items:center;gap:10px;padding:0 0 14px;overflow-x:auto;scrollbar-width:none}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;
  padding:6px 15px;
  border-radius:999px;
  font-size:13.5px;
  color:var(--text-2);
  border:1px solid var(--line);
  background:rgba(18,26,50,.4);
  transition:color .2s ease, border-color .2s ease, background .2s ease;
  white-space:nowrap;
}
.chip:hover{color:var(--primary);border-color:rgba(53,208,255,.45)}
.chip-active{color:var(--primary);border-color:rgba(53,208,255,.6);background:rgba(53,208,255,.1)}
.menu-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  align-items:center;justify-content:center;
  cursor:pointer;
  color:var(--text-2);
  transition:color .2s ease, border-color .2s ease;
}
.menu-toggle:hover{color:var(--primary);border-color:rgba(53,208,255,.45)}

/* 抽屉 */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(3,5,12,.7);
  backdrop-filter:blur(3px);
  opacity:0;
  pointer-events:none;
  transition:opacity .3s ease;
  z-index:80;
}
.drawer-mask.show{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;
  top:0;right:0;
  height:100%;
  width:min(86vw,360px);
  padding:22px 20px 32px;
  background:linear-gradient(180deg, rgba(10,15,31,.98), rgba(5,7,15,.99));
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .34s cubic-bezier(.22,.61,.36,1);
  z-index:90;
  overflow-y:auto;
}
.drawer.show{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-title{font-size:15px;font-weight:600}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);color:var(--text-2);cursor:pointer}
.drawer-search{display:flex;align-items:center;gap:8px;padding:8px 8px 8px 16px;border-radius:999px;border:1px solid var(--line);background:rgba(18,26,50,.55);margin-bottom:20px}
.drawer-search input{flex:1;min-width:0;font-size:14px}
.drawer-links{display:flex;flex-direction:column;gap:6px}
.drawer-links a{
  padding:13px 14px;
  border-radius:12px;
  font-size:15px;
  color:var(--text-2);
  border:1px solid transparent;
  transition:all .2s ease;
}
.drawer-links a:hover,.drawer-links a.active{color:var(--primary);background:rgba(53,208,255,.08);border-color:rgba(53,208,255,.3)}

/* ============ 按钮 ============ */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border-radius:999px;
  font-size:15px;font-weight:600;
  color:#04121C;
  background:linear-gradient(100deg,#35D0FF,#8B6BFF);
  box-shadow:0 0 24px -6px rgba(53,208,255,.55);
  cursor:pointer;
  transition:transform .2s ease, filter .2s ease, box-shadow .2s ease;
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 18px -8px rgba(53,208,255,.5)}
.btn-primary.btn-sm{padding:9px 18px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  border-radius:999px;
  font-size:15px;
  color:var(--text-2);
  border:1px solid var(--line);
  background:rgba(18,26,50,.32);
  transition:color .2s ease, border-color .2s ease, background .2s ease;
}
.btn-ghost:hover{color:var(--primary);border-color:rgba(53,208,255,.5);background:rgba(53,208,255,.06)}
.btn-ghost.btn-sm{padding:9px 18px;font-size:14px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;
  color:var(--text-2);
  transition:color .2s ease, text-underline-offset .2s ease;
}
.link-arrow:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px}

/* ============ 玻璃卡片 ============ */
.glass-card{
  position:relative;
  background:var(--glass-bg);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06), var(--shadow-card);
  transition:transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.glass-card:hover{
  transform:translateY(-3px);
  border-color:rgba(53,208,255,.4);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06), 0 0 28px -8px rgba(53,208,255,.5);
}

.badge{
  display:inline-flex;align-items:center;
  padding:3px 11px;
  border-radius:999px;
  font-size:12.5px;
  line-height:1.7;
  border:1px solid transparent;
}
.badge-cyan{color:var(--primary);background:rgba(53,208,255,.12);border-color:rgba(53,208,255,.32)}
.badge-violet{color:#BCA8FF;background:rgba(139,107,255,.14);border-color:rgba(139,107,255,.34)}
.badge-gold{color:var(--reward);background:rgba(255,194,75,.12);border-color:rgba(255,194,75,.34)}

/* ============ 区块通用 ============ */
.section{padding:104px 0}
.section-tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--primary);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:rgba(53,208,255,.6)}
h2.section-title{font-size:clamp(23px,2.6vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
.section-desc{margin-top:14px;font-size:15.5px;color:var(--text-2);line-height:1.85}

/* ============ Hero ============ */
.hero{position:relative;padding:76px 0 88px;overflow:hidden}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(180deg, rgba(5,7,15,.62), rgba(5,7,15,.9)),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  opacity:.55;
  z-index:-1;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center}
.hero h1{
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.15;
  font-weight:700;
  letter-spacing:-.02em;
  margin-bottom:20px;
}
.hero-sub{font-size:16.5px;color:var(--text-2);line-height:1.9;max-width:600px}
.hero-cta{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:38px}
.stat-pill{
  display:flex;flex-direction:column;gap:2px;
  padding:12px 18px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(18,26,50,.42);
  min-width:126px;
}
.stat-pill .v{font-size:19px;font-weight:700;color:var(--primary-light)}
.stat-pill .k{font-size:12.5px;color:var(--text-3)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  box-shadow:0 30px 60px -34px rgba(0,0,0,.95);
}
.float-card{
  position:absolute;
  right:-12px;
  bottom:-26px;
  width:min(280px,78%);
  padding:18px 20px;
  border-radius:var(--radius);
  background:linear-gradient(160deg, rgba(28,40,80,.78), rgba(10,16,36,.7));
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid rgba(53,208,255,.28);
  box-shadow:0 24px 46px -26px rgba(0,0,0,.95);
}
.float-card .fc-t{font-size:13px;color:var(--text-3);margin-bottom:8px}
.float-card .fc-v{font-size:22px;font-weight:700;color:var(--primary-light)}
.float-card .fc-bar{height:6px;border-radius:999px;background:rgba(130,165,255,.16);margin-top:12px;overflow:hidden}
.float-card .fc-bar i{display:block;height:100%;width:72%;border-radius:999px;background:linear-gradient(90deg,#35D0FF,#8B6BFF)}

/* ============ 玩法步骤 ============ */
.steps-wrap{position:relative}
.steps-track{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:22px;
  position:relative;
}
.steps-track::before{
  content:"";
  position:absolute;
  top:52px;
  left:6%;
  right:6%;
  height:1px;
  background:linear-gradient(90deg, rgba(53,208,255,.05), rgba(53,208,255,.38), rgba(139,107,255,.3), rgba(139,107,255,.05));
  opacity:.4;
}
.step-card{position:relative;padding:26px 22px 28px}
.step-num{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:44px;
  line-height:1;
  font-weight:700;
  color:transparent;
  -webkit-text-stroke:1px rgba(111,226,255,.55);
  margin-bottom:16px;
}
.step-dot{
  position:absolute;
  top:46px;
  right:22px;
  width:12px;height:12px;
  border-radius:50%;
  background:var(--ink-950);
  border:1px solid rgba(53,208,255,.6);
  box-shadow:0 0 14px -2px rgba(53,208,255,.7);
}
.step-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.step-card p{font-size:14.5px;color:var(--text-2);line-height:1.85}

/* ============ 奖励预览 ============ */
.reward-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;align-items:start}
.reward-card{overflow:hidden;padding:0}
.reward-card:nth-child(2){margin-top:40px}
.reward-cover{position:relative;aspect-ratio:16/9;overflow:hidden}
.reward-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.reward-card:hover .reward-cover img{transform:scale(1.04)}
.reward-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg, rgba(5,7,15,.1), rgba(5,7,15,.82))}
.reward-cover .badge{position:absolute;top:16px;left:16px;z-index:2;background:rgba(5,7,15,.72)}
.reward-body{padding:22px 24px 26px}
.reward-body h3{font-size:20px;font-weight:600;margin-bottom:8px}
.reward-body .rw-desc{font-size:14.5px;color:var(--text-2);margin-bottom:18px}
.reward-list{display:flex;flex-direction:column;gap:11px}
.reward-list li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--text-2)}
.reward-list li i{
  width:7px;height:7px;border-radius:50%;
  background:var(--reward);
  box-shadow:0 0 12px -2px rgba(255,194,75,.9);
  flex-shrink:0;
}
.reward-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:22px;padding-top:18px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.reward-foot .rv{font-family:ui-monospace,monospace;font-size:16px;color:var(--reward);font-weight:700}

/* ============ 进度区 ============ */
.progress-panel{padding:34px 32px 38px}
.progress-top{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:20px}
.progress-top h3{font-size:20px;font-weight:600}
.progress-top .pv{font-family:ui-monospace,monospace;font-size:30px;font-weight:700;color:var(--primary-light)}
.progress-rail{height:10px;border-radius:999px;background:rgba(130,165,255,.14);overflow:hidden}
.progress-fill{height:100%;width:68%;border-radius:999px;background:linear-gradient(90deg,#35D0FF,#8B6BFF);box-shadow:0 0 22px -6px rgba(53,208,255,.8)}
.milestones{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:30px}
.milestone{position:relative;padding-left:20px}
.milestone::before{
  content:"";
  position:absolute;left:0;top:7px;
  width:9px;height:9px;border-radius:50%;
}
.milestone.done::before{background:var(--reward);box-shadow:0 0 12px -2px rgba(255,194,75,.9)}
.milestone.doing::before{background:var(--primary);box-shadow:0 0 12px -2px rgba(53,208,255,.9)}
.milestone.todo::before{background:transparent;border:1px solid var(--text-3)}
.milestone .m-t{font-size:14.5px;font-weight:600;margin-bottom:4px}
.milestone .m-s{font-size:12.5px;color:var(--text-3)}
.milestone .m-n{font-family:ui-monospace,monospace;font-size:13px;color:var(--text-2);margin-top:6px}

/* ============ CTA 横幅 ============ */
.cta-band{
  border-radius:var(--radius-lg);
  border:1px solid rgba(53,208,255,.24);
  background:linear-gradient(120deg, rgba(53,208,255,.12), rgba(139,107,255,.14) 55%, rgba(10,16,36,.4));
  padding:46px 40px;
  text-align:center;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  width:420px;height:420px;
  right:-140px;top:-200px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(139,107,255,.26), transparent 65%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(21px,2.4vw,29px);font-weight:700;letter-spacing:-.01em;margin-bottom:14px}
.cta-band p{font-size:15px;color:var(--text-2);max-width:640px;margin:0 auto 26px}
.btn-breath{animation:breath 2.8s ease-in-out infinite}
@keyframes breath{
  0%,100%{box-shadow:0 0 24px -6px rgba(53,208,255,.5)}
  50%{box-shadow:0 0 34px -4px rgba(53,208,255,.85)}
}
.cta-terms{margin-top:18px;font-size:12.5px;color:var(--text-3)}

/* ============ 资讯列表 ============ */
.info-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.info-card{overflow:hidden;display:flex;flex-direction:column}
.info-cover{position:relative;aspect-ratio:16/10;background-size:cover;background-position:center}
.info-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg, rgba(5,7,15,.06), rgba(5,7,15,.72))}
.info-cover .badge{position:absolute;left:14px;top:14px;z-index:2;background:rgba(5,7,15,.72)}
.info-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.info-body h3{font-size:17px;font-weight:600;line-height:1.55;margin-bottom:10px}
.info-body h3 a{transition:color .2s ease}
.info-body h3 a:hover{color:var(--primary)}
.info-sum{
  font-size:14px;
  color:var(--text-2);
  line-height:1.8;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:16px;
}
.info-meta{
  display:flex;align-items:center;justify-content:space-between;
  gap:10px;margin-top:auto;padding-top:14px;
  border-top:1px solid var(--line);
  font-size:12.5px;color:var(--text-3);
}
.info-meta .go{color:var(--primary);font-size:13px}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:12px;
  padding:56px 24px;
  border-radius:var(--radius);
  border:1px dashed rgba(130,165,255,.26);
  background:rgba(18,26,50,.3);
  text-align:center;
}
.empty-state p{color:var(--text-2);font-size:15px}

/* ============ 数据指标 ============ */
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.metric{padding:26px 22px;border-radius:var(--radius);border:1px solid var(--line);background:rgba(18,26,50,.36)}
.metric .mv{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:32px;font-weight:700;color:var(--primary-light);font-variant-numeric:tabular-nums}
.metric .mk{font-size:14px;font-weight:600;margin-top:8px}
.metric .md{font-size:13px;color:var(--text-3);margin-top:6px;line-height:1.7}
.metric-bar{height:5px;border-radius:999px;background:rgba(130,165,255,.14);margin-top:14px;overflow:hidden}
.metric-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#35D0FF,#8B6BFF)}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:52px;align-items:start}
.faq-aside p{font-size:15px;color:var(--text-2);margin-top:14px;line-height:1.9}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  position:relative;
  width:100%;
  min-height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:17px 6px 17px 14px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text-1);
  cursor:pointer;
  transition:color .2s ease;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:2px;
  border-radius:2px;
  background:var(--primary);
  opacity:0;
  transition:opacity .25s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-item.open .faq-q{color:var(--primary)}
.faq-item.open .faq-q::before{opacity:1}
.faq-q svg{flex-shrink:0;transition:transform .28s ease;color:var(--text-3)}
.faq-item.open .faq-q svg{transform:rotate(180deg);color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 14px 20px;font-size:14.5px;color:var(--text-2);line-height:1.9;opacity:0;transform:translateY(-4px);transition:opacity .3s .04s ease, transform .3s .04s ease}
.faq-item.open .faq-a-inner{opacity:1;transform:none}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:40px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(10,15,31,.7), rgba(5,7,15,.95));
  padding:64px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-desc{font-size:14px;color:var(--text-2);line-height:1.85;max-width:320px}
.footer-title{font-size:14.5px;font-weight:600;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a,.footer-links span{font-size:14px;color:var(--text-2);transition:color .2s ease}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease, transform .4s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-search.desktop-only{display:none}
  .menu-toggle{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:2}
  .float-card{position:static;width:100%;margin-top:16px}
  .steps-track{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps-track::before{display:none}
  .info-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
}
@media (max-width:767px){
  .section{padding:60px 0}
  .section-tight{padding:46px 0}
  .hero{padding:44px 0 58px;min-height:420px}
  .hero h1{font-size:clamp(26px,7vw,34px)}
  .hero-sub{font-size:15.5px}
  .hero-cta{gap:14px}
  .hero-cta .btn-primary{width:100%}
  .btn-ghost{width:100%}
  .nav-row{padding:12px 0 8px;gap:12px}
  .brand-text{font-size:15px}
  .reward-grid{grid-template-columns:1fr;gap:20px}
  .reward-card:nth-child(2){margin-top:0}
  .info-grid{grid-template-columns:1fr}
  .milestones{grid-template-columns:1fr;gap:0}
  .milestone{padding:16px 0 16px 22px;border-left:1px solid var(--line)}
  .milestone::before{top:24px;left:-5px}
  .milestone:last-child{border-left-color:transparent}
  .progress-panel{padding:24px 20px 28px}
  .cta-band{padding:32px 22px}
  .metrics{grid-template-columns:1fr;gap:14px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .faq-q{font-size:15px}
}
@media (max-width:519px){
  .steps-track{grid-template-columns:1fr}
  .stat-pill{min-width:calc(50% - 6px);flex:1}
  .brand-text{font-size:14px}
}

/* roulang page: category1 */
:root{
  --ink-950:#05070F; --ink-900:#0A0F1F; --ink-800:#121A32; --ink-700:#1B2544;
  --primary:#35D0FF; --primary-light:#6FE2FF; --primary-dark:#1F9CC7;
  --violet:#8B6BFF; --reward:#FFC24B;
  --text-1:#E9F0FF; --text-2:#A6B4D6; --text-3:#6B7A9E;
  --line:rgba(130,165,255,.14);
  --line-strong:rgba(53,208,255,.4);
  --radius:16px; --radius-lg:20px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.9);
  --glass:linear-gradient(160deg, rgba(28,40,80,.55), rgba(10,16,36,.35));
}

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px; line-height:1.85; color:var(--text-1);
  background:
    radial-gradient(900px 520px at 12% -6%, rgba(53,208,255,.10), transparent 62%),
    radial-gradient(760px 480px at 92% 6%, rgba(139,107,255,.12), transparent 64%),
    linear-gradient(180deg, var(--ink-950), var(--ink-900));
  background-attachment:fixed;
  min-height:100%;
}
body::before{
  content:""; position:fixed; inset:0; pointer-events:none; z-index:0;
  background-image:
    radial-gradient(1.4px 1.4px at 18% 24%, rgba(233,240,255,.55), transparent 100%),
    radial-gradient(1.2px 1.2px at 62% 12%, rgba(233,240,255,.42), transparent 100%),
    radial-gradient(1.6px 1.6px at 82% 46%, rgba(111,226,255,.42), transparent 100%),
    radial-gradient(1.2px 1.2px at 34% 72%, rgba(233,240,255,.34), transparent 100%),
    radial-gradient(1.4px 1.4px at 72% 84%, rgba(139,107,255,.42), transparent 100%);
  opacity:.55;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
input,textarea,select{ font:inherit; color:inherit; }
h1,h2,h3,h4{ margin:0; line-height:1.25; letter-spacing:-0.01em; }
p{ margin:0; }
ul,ol{ margin:0; padding:0; list-style:none; }
:focus-visible{ outline:2px solid rgba(53,208,255,.45); outline-offset:2px; border-radius:8px; }

.container{ width:100%; max-width:1200px; margin:0 auto; padding:0 24px; position:relative; z-index:1; }
.section{ padding:96px 0; position:relative; z-index:1; }
.section-sm{ padding:64px 0; }
.section-head{ max-width:760px; margin-bottom:44px; }
.eyebrow{
  display:inline-flex; align-items:center; gap:8px; font-size:13px; letter-spacing:.04em;
  color:var(--primary-light); border:1px solid var(--line); border-radius:999px;
  padding:6px 14px; background:rgba(53,208,255,.07); margin-bottom:18px;
}
.section-title{ font-size:clamp(22px,2.4vw,32px); font-weight:700; }
.section-sub{ color:var(--text-2); font-size:15.5px; margin-top:14px; }
.divider{ height:1px; background:var(--line); border:0; margin:0; }

/* ---------- header / nav ---------- */
.site-header{
  position:sticky; top:0; z-index:60;
  background:linear-gradient(180deg, rgba(5,7,15,.72), rgba(5,7,15,.28));
  backdrop-filter:blur(6px);
  transition:background .28s ease, border-color .28s ease, box-shadow .28s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  background:rgba(10,15,31,.86);
  backdrop-filter:blur(16px) saturate(130%);
  border-bottom:1px solid var(--line);
  box-shadow:0 14px 34px -26px rgba(0,0,0,.95);
}
.site-header .container{ padding-top:14px; padding-bottom:12px; }
.nav-row{ display:flex; align-items:center; gap:22px; }
.brand{ display:flex; align-items:center; gap:10px; flex:0 0 auto; }
.brand-mark{
  width:34px; height:34px; border-radius:11px; display:grid; place-items:center;
  background:linear-gradient(150deg, rgba(53,208,255,.22), rgba(139,107,255,.22));
  border:1px solid var(--line); box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.brand-text{ font-size:17.5px; font-weight:700; letter-spacing:-0.01em; white-space:nowrap; }
.brand-text span{ color:var(--primary); }

.nav-search{
  flex:1 1 auto; max-width:520px; margin:0 auto;
  display:flex; align-items:center; gap:10px;
  padding:7px 8px 7px 16px; border-radius:999px;
  background:linear-gradient(160deg, rgba(28,40,80,.6), rgba(10,16,36,.42));
  border:1px solid var(--line); box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
  transition:border-color .25s ease, box-shadow .25s ease;
}
.nav-search:focus-within{ border-color:var(--line-strong); box-shadow:0 0 0 3px rgba(53,208,255,.12); }
.nav-search input{
  flex:1 1 auto; min-width:0; background:transparent; border:0; outline:none;
  font-size:14px; color:var(--text-1);
}
.nav-search input::placeholder{ color:var(--text-3); }
.search-btn{
  flex:0 0 auto; padding:8px 18px; border-radius:999px; font-size:13.5px; font-weight:600;
  color:#04101E; background:linear-gradient(100deg,#35D0FF,#8B6BFF);
  box-shadow:0 0 20px -8px rgba(53,208,255,.65); transition:filter .2s ease, transform .2s ease;
}
.search-btn:hover{ filter:brightness(1.08); }

.nav-actions{ display:flex; align-items:center; gap:10px; flex:0 0 auto; }
.menu-toggle{
  width:38px; height:38px; border-radius:12px; display:grid; place-items:center;
  border:1px solid var(--line); color:var(--text-2); transition:color .2s, border-color .2s;
}
.menu-toggle:hover{ color:var(--primary); border-color:var(--line-strong); }

.nav-chips{
  display:flex; align-items:center; gap:10px; margin-top:14px;
  overflow-x:auto; scrollbar-width:none; -ms-overflow-style:none; padding-bottom:2px;
}
.nav-chips::-webkit-scrollbar{ display:none; }
.chip{
  flex:0 0 auto; padding:7px 15px; border-radius:999px; font-size:13.5px;
  color:var(--text-2); border:1px solid var(--line); background:rgba(18,26,50,.45);
  transition:color .2s ease, border-color .2s ease, background .2s ease;
}
.chip:hover{ color:var(--primary-light); border-color:rgba(53,208,255,.35); }
.chip-active{
  color:#EAF8FF; border-color:var(--line-strong);
  background:linear-gradient(160deg, rgba(53,208,255,.18), rgba(139,107,255,.14));
}

/* ---------- buttons ---------- */
.btn-primary{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:13px 26px; border-radius:999px; font-size:15px; font-weight:700;
  color:#04101E; background:linear-gradient(100deg,#35D0FF,#8B6BFF);
  box-shadow:0 0 24px -6px rgba(53,208,255,.55);
  transition:filter .2s ease, transform .2s ease, box-shadow .2s ease;
}
.btn-primary:hover{ filter:brightness(1.08); transform:translateY(-1px); }
.btn-primary:active{ transform:translateY(1px); box-shadow:0 0 16px -10px rgba(53,208,255,.5); }
.btn-ghost{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 22px; border-radius:999px; font-size:14.5px; font-weight:600;
  color:var(--text-2); border:1px solid var(--line); background:transparent;
  transition:color .2s ease, border-color .2s ease, transform .2s ease;
}
.btn-ghost:hover{ color:var(--primary-light); border-color:var(--line-strong); transform:translateY(-1px); }
.btn-sm{ padding:9px 18px; font-size:13.5px; }
.btn-link{ color:var(--primary-light); font-size:14.5px; font-weight:600; transition:text-underline-offset .2s ease; }
.btn-link:hover{ text-decoration:underline; text-underline-offset:3px; }

/* ---------- glass card ---------- */
.card{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,.06);
  padding:24px; transition:border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.card:hover{
  border-color:rgba(53,208,255,.4); transform:translateY(-3px);
  box-shadow:0 0 28px -8px rgba(53,208,255,.5), var(--shadow);
}
.card-lg{ border-radius:var(--radius-lg); padding:28px; }

/* ---------- hero ---------- */
.hero{ position:relative; overflow:hidden; border-bottom:1px solid var(--line); }
.hero-bg{
  position:absolute; inset:0; z-index:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover; background-position:center;
  opacity:.42;
}
.hero::after{
  content:""; position:absolute; inset:0; z-index:0;
  background:
    radial-gradient(620px 420px at 16% 18%, rgba(53,208,255,.18), transparent 68%),
    radial-gradient(560px 420px at 88% 62%, rgba(139,107,255,.20), transparent 70%),
    linear-gradient(180deg, rgba(5,7,15,.72), rgba(5,7,15,.94));
}
.hero-inner{ position:relative; z-index:1; padding:78px 0 82px; }
.hero-grid{ display:grid; grid-template-columns:1.08fr .92fr; gap:48px; align-items:center; }
.hero h1{ font-size:clamp(30px,4.4vw,50px); font-weight:700; letter-spacing:-0.02em; }
.hero h1 em{ font-style:normal; color:var(--primary); }
.hero-sub{ color:var(--text-2); font-size:16.5px; margin-top:20px; max-width:560px; }
.hero-actions{ display:flex; flex-wrap:wrap; align-items:center; gap:16px; margin-top:32px; }
.stat-row{ display:flex; flex-wrap:wrap; gap:12px; margin-top:36px; }
.stat-pill{
  border:1px solid var(--line); border-radius:14px; padding:12px 18px;
  background:linear-gradient(160deg, rgba(28,40,80,.5), rgba(10,16,36,.3));
  min-width:138px;
}
.stat-pill b{
  display:block; font-size:22px; font-weight:700; color:var(--primary-light);
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace; font-variant-numeric:tabular-nums;
}
.stat-pill span{ font-size:12.5px; color:var(--text-3); }

.hero-visual{ position:relative; }
.hero-visual .shot{
  border-radius:var(--radius-lg); overflow:hidden; border:1px solid var(--line);
  box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,.06);
  background:var(--glass); backdrop-filter:blur(12px);
}
.hero-visual .shot img{ width:100%; height:300px; object-fit:cover; }
.float-card{
  position:absolute; left:-22px; bottom:-26px; width:min(280px,86%);
  background:linear-gradient(160deg, rgba(28,40,80,.86), rgba(10,16,36,.72));
  border:1px solid var(--line); border-radius:var(--radius);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,.07);
  padding:18px;
}
.float-card .fc-title{ font-size:13.5px; color:var(--text-3); }
.float-card .fc-value{ font-size:20px; font-weight:700; margin-top:6px; }
.progress{ height:6px; border-radius:999px; background:rgba(130,165,255,.16); overflow:hidden; margin-top:12px; }
.progress i{ display:block; height:100%; border-radius:999px; background:linear-gradient(90deg,#35D0FF,#8B6BFF); }
.progress.gold i{ background:linear-gradient(90deg,#35D0FF,#FFC24B); }

/* ---------- steps ---------- */
.step-track{ position:relative; padding-left:4px; }
.step-item{
  position:relative; display:grid; grid-template-columns:72px 1fr; gap:20px;
  padding:0 0 28px 0;
}
.step-item::before{
  content:""; position:absolute; left:35px; top:56px; bottom:-4px; width:1px;
  background:linear-gradient(180deg, rgba(53,208,255,.45), rgba(139,107,255,.12));
}
.step-item:last-child{ padding-bottom:0; }
.step-item:last-child::before{ display:none; }
.step-no{
  width:52px; height:52px; border-radius:16px; display:grid; place-items:center;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace; font-size:18px; font-weight:700;
  color:var(--primary-light); border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(28,40,80,.66), rgba(10,16,36,.4));
}
.step-body{
  background:var(--glass); border:1px solid var(--line); border-radius:var(--radius);
  padding:22px 24px; backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color .25s ease, transform .25s ease;
}
.step-body:hover{ border-color:rgba(53,208,255,.38); transform:translateY(-3px); }
.step-body h3{ font-size:19px; font-weight:700; }
.step-body p{ color:var(--text-2); font-size:14.8px; margin-top:10px; }
.mini-list{ margin-top:14px; display:grid; gap:8px; }
.mini-list li{ display:flex; gap:10px; color:var(--text-2); font-size:14px; line-height:1.7; }
.mini-list li::before{
  content:""; flex:0 0 auto; width:6px; height:6px; margin-top:9px; border-radius:50%;
  background:var(--primary); box-shadow:0 0 10px rgba(53,208,255,.7);
}

/* ---------- side card ---------- */
.side-card{ position:sticky; top:120px; }
.side-card .cover{ border-radius:14px; overflow:hidden; border:1px solid var(--line); margin-bottom:20px; }
.side-card .cover img{ width:100%; height:190px; object-fit:cover; }
.side-list{ display:grid; gap:14px; margin-top:6px; }
.side-list li{ display:flex; gap:12px; font-size:14.5px; color:var(--text-2); }
.side-num{
  flex:0 0 auto; width:24px; height:24px; border-radius:8px; display:grid; place-items:center;
  font-size:12.5px; font-weight:700; color:var(--primary-light);
  border:1px solid var(--line); background:rgba(53,208,255,.1);
}

/* ---------- badges ---------- */
.badge{ display:inline-flex; align-items:center; gap:6px; padding:4px 12px; border-radius:999px; font-size:12.5px; font-weight:600; }
.badge-blue{ color:#BEEBFF; background:rgba(53,208,255,.14); border:1px solid rgba(53,208,255,.32); }
.badge-violet{ color:#DCD3FF; background:rgba(139,107,255,.16); border:1px solid rgba(139,107,255,.34); }
.badge-gold{ color:#FFE3AC; background:rgba(255,194,75,.14); border:1px solid rgba(255,194,75,.36); }

/* ---------- device cards ---------- */
.device-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; align-items:start; }
.device-card:nth-child(2){ margin-top:34px; }
.device-card:nth-child(3){ margin-top:14px; }
.device-card h3{ font-size:19px; font-weight:700; margin-top:16px; }
.device-card p{ color:var(--text-2); font-size:14.6px; margin-top:10px; }
.device-icon{
  width:44px; height:44px; border-radius:13px; display:grid; place-items:center;
  border:1px solid var(--line); background:linear-gradient(150deg, rgba(53,208,255,.16), rgba(139,107,255,.16));
}
.tag-row{ display:flex; flex-wrap:wrap; gap:8px; margin-top:16px; }
.card-points{ margin-top:16px; display:grid; gap:9px; }
.card-points li{ font-size:14px; color:var(--text-2); padding-left:16px; position:relative; }
.card-points li::before{
  content:""; position:absolute; left:0; top:9px; width:7px; height:1px; background:var(--primary);
}

/* ---------- checklist ---------- */
.check-panel{ display:grid; grid-template-columns:1.05fr .95fr; gap:32px; align-items:start; }
.check-list{ display:grid; gap:14px; }
.check-item{
  display:flex; gap:14px; align-items:flex-start; padding:16px 18px;
  border:1px solid var(--line); border-radius:14px;
  background:linear-gradient(160deg, rgba(28,40,80,.42), rgba(10,16,36,.26));
  transition:border-color .25s ease, transform .25s ease;
}
.check-item:hover{ border-color:rgba(53,208,255,.36); transform:translateX(3px); }
.check-mark{
  flex:0 0 auto; width:24px; height:24px; border-radius:8px; display:grid; place-items:center;
  border:1px solid rgba(53,208,255,.4); background:rgba(53,208,255,.12); margin-top:3px;
}
.check-item h4{ font-size:15.5px; font-weight:700; }
.check-item p{ font-size:13.8px; color:var(--text-2); margin-top:5px; }

.meter-card .meter{ margin-top:22px; }
.meter-line{ display:flex; justify-content:space-between; font-size:13.5px; color:var(--text-2); }
.meter-line b{ color:var(--text-1); font-family:ui-monospace,Menlo,monospace; font-variant-numeric:tabular-nums; }

/* ---------- table ---------- */
.table-scroll{ overflow-x:auto; border:1px solid var(--line); border-radius:var(--radius); background:rgba(10,16,36,.42); }
.spec-table{ width:100%; border-collapse:collapse; min-width:640px; }
.spec-table th{
  text-align:left; font-size:13.5px; font-weight:700; color:var(--text-2);
  padding:0 20px; height:50px; background:rgba(18,26,50,.85);
  border-bottom:1px solid var(--line); white-space:nowrap;
}
.spec-table td{
  padding:0 20px; height:48px; font-size:14.2px; color:var(--text-2);
  border-bottom:1px solid rgba(130,165,255,.08); vertical-align:middle;
}
.spec-table tbody tr:nth-child(even){ background:rgba(255,255,255,.018); }
.spec-table tbody tr:last-child td{ border-bottom:0; }
.spec-table td:first-child{ color:var(--text-1); font-weight:600; }

/* ---------- CTA ---------- */
.cta-banner{
  position:relative; overflow:hidden; border-radius:var(--radius-lg);
  border:1px solid var(--line); padding:52px 32px; text-align:center;
  background:
    radial-gradient(520px 260px at 22% 0%, rgba(53,208,255,.18), transparent 66%),
    radial-gradient(460px 260px at 82% 100%, rgba(139,107,255,.2), transparent 68%),
    linear-gradient(160deg, rgba(28,40,80,.62), rgba(10,16,36,.4));
  box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,.06);
}
.cta-banner h2{ font-size:clamp(21px,2.3vw,29px); font-weight:700; }
.cta-banner p{ color:var(--text-2); font-size:15px; margin-top:14px; }
.cta-banner .btn-primary{ margin-top:28px; animation:glow 3.4s ease-in-out infinite; }
@keyframes glow{
  0%,100%{ box-shadow:0 0 22px -8px rgba(53,208,255,.55); }
  50%{ box-shadow:0 0 34px -4px rgba(53,208,255,.8); }
}
.cta-note{ font-size:12.5px; color:var(--text-3); margin-top:16px; }

/* ---------- FAQ ---------- */
.faq-grid{ display:grid; grid-template-columns:.82fr 1.18fr; gap:40px; align-items:start; }
.faq-item{ border:1px solid var(--line); border-radius:14px; background:rgba(10,16,36,.4); margin-bottom:12px; overflow:hidden; transition:border-color .25s ease; }
.faq-item.is-open{ border-color:rgba(53,208,255,.38); }
.faq-q{
  width:100%; display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:0 20px; min-height:58px; text-align:left; font-size:15.4px; font-weight:600; color:var(--text-1);
  position:relative;
}
.faq-q::before{
  content:""; position:absolute; left:0; top:12px; bottom:12px; width:2px; border-radius:2px;
  background:var(--primary); opacity:0; transition:opacity .25s ease;
}
.faq-item.is-open .faq-q::before{ opacity:1; }
.faq-arrow{ flex:0 0 auto; transition:transform .3s ease; color:var(--text-3); }
.faq-item.is-open .faq-arrow{ transform:rotate(180deg); color:var(--primary); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .34s ease; }
.faq-a p{ padding:0 20px 20px; font-size:14.4px; color:var(--text-2); }

/* ---------- related ---------- */
.rel-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.rel-card{ display:flex; flex-direction:column; padding:0; overflow:hidden; }
.rel-card .thumb{ height:150px; overflow:hidden; }
.rel-card .thumb img{ width:100%; height:100%; object-fit:cover; transition:transform .4s ease; }
.rel-card:hover .thumb img{ transform:scale(1.05); }
.rel-body{ padding:20px 22px 24px; }
.rel-body h3{ font-size:17.5px; font-weight:700; }
.rel-body p{ color:var(--text-2); font-size:14.2px; margin-top:10px; }
.rel-body .btn-link{ margin-top:16px; display:inline-block; }

/* ---------- footer ---------- */
.site-footer{ border-top:1px solid var(--line); margin-top:24px; background:linear-gradient(180deg, rgba(10,15,31,.4), rgba(5,7,15,.9)); position:relative; z-index:1; }
.footer-grid{ display:grid; grid-template-columns:1.5fr 1fr 1fr 1.15fr; gap:36px; padding:64px 0 40px; }
.footer-brand{ display:flex; align-items:center; gap:10px; }
.footer-desc{ color:var(--text-3); font-size:13.8px; margin-top:16px; max-width:320px; }
.footer-title{ font-size:14px; font-weight:700; color:var(--text-1); margin-bottom:16px; }
.footer-links{ display:grid; gap:11px; }
.footer-links a,.footer-links span{ font-size:13.8px; color:var(--text-3); transition:color .2s ease; }
.footer-links a:hover{ color:var(--primary-light); }
.footer-bottom{
  display:flex; flex-wrap:wrap; justify-content:space-between; gap:12px;
  border-top:1px solid var(--line); padding:22px 0 28px;
  font-size:13px; color:var(--text-3);
}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed; inset:0; background:rgba(4,6,14,.6); backdrop-filter:blur(3px);
  opacity:0; visibility:hidden; transition:opacity .3s ease, visibility .3s ease; z-index:70;
}
.drawer-mask.is-open{ opacity:1; visibility:visible; }
.drawer{
  position:fixed; top:0; right:0; height:100%; width:min(360px,88vw); z-index:80;
  background:linear-gradient(180deg, rgba(10,15,31,.98), rgba(5,7,15,.98));
  border-left:1px solid var(--line); padding:24px 22px;
  transform:translateX(102%); transition:transform .32s ease;
  overflow-y:auto;
}
.drawer.is-open{ transform:translateX(0); }
.drawer-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:22px; }
.drawer-close{ width:36px; height:36px; border-radius:11px; border:1px solid var(--line); display:grid; place-items:center; color:var(--text-2); }
.drawer-search{
  display:flex; align-items:center; gap:10px; padding:10px 16px; border-radius:999px;
  border:1px solid var(--line); background:rgba(18,26,50,.55); margin-bottom:22px;
}
.drawer-search input{ flex:1; min-width:0; background:transparent; border:0; outline:none; font-size:14px; }
.drawer-search input::placeholder{ color:var(--text-3); }
.drawer-links{ display:grid; gap:10px; }
.drawer-links a{
  padding:12px 16px; border-radius:12px; border:1px solid var(--line);
  color:var(--text-2); font-size:14.5px; background:rgba(18,26,50,.35);
  transition:color .2s ease, border-color .2s ease;
}
.drawer-links a:hover{ color:var(--primary-light); border-color:rgba(53,208,255,.36); }
.drawer-links a.is-active{ color:#EAF8FF; border-color:var(--line-strong); background:rgba(53,208,255,.12); }

/* ---------- reveal ---------- */
.reveal{ opacity:0; transform:translateY(12px); transition:opacity .4s ease, transform .4s ease; }
.reveal.is-in{ opacity:1; transform:none; }

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-grid{ grid-template-columns:1fr; gap:52px; }
  .float-card{ position:static; width:100%; margin-top:16px; }
  .device-grid{ grid-template-columns:1fr 1fr; }
  .device-card:nth-child(3){ margin-top:0; }
  .check-panel{ grid-template-columns:1fr; }
  .faq-grid{ grid-template-columns:1fr; gap:28px; }
  .rel-grid{ grid-template-columns:1fr 1fr; }
  .footer-grid{ grid-template-columns:1fr 1fr; gap:32px; }
  .side-card{ position:static; }
}
@media (max-width:860px){
  .section{ padding:72px 0; }
  .hero-inner{ padding:56px 0 62px; }
  .nav-search.desktop-only{ display:none; }
}
@media (max-width:768px){
  .container{ padding:0 18px; }
  .section{ padding:60px 0; }
  .section-sm{ padding:48px 0; }
  .device-grid{ grid-template-columns:1fr; }
  .device-card:nth-child(2),.device-card:nth-child(3){ margin-top:0; }
  .rel-grid{ grid-template-columns:1fr; }
  .step-item{ grid-template-columns:56px 1fr; gap:14px; }
  .step-item::before{ left:27px; top:48px; }
  .step-no{ width:44px; height:44px; border-radius:14px; font-size:16px; }
  .cta-banner{ padding:40px 20px; }
  .footer-grid{ grid-template-columns:1fr; gap:28px; padding:48px 0 28px; }
  .footer-bottom{ flex-direction:column; gap:8px; }
}
@media (max-width:520px){
  .hero h1{ font-size:30px; }
  .hero-actions{ gap:12px; }
  .hero-actions .btn-primary,.hero-actions .btn-ghost{ width:100%; }
  .stat-pill{ flex:1 1 calc(50% - 6px); min-width:0; }
  .cta-banner .btn-primary{ width:100%; }
  .card{ padding:20px; }
}
@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; transition:none !important; }
  .reveal{ opacity:1; transform:none; }
}

/* roulang page: article */
:root{
  --ink-950:#05070F;
  --ink-900:#0A0F1F;
  --ink-800:#121A32;
  --ink-700:#1B2544;
  --primary:#35D0FF;
  --primary-light:#6FE2FF;
  --primary-dark:#1F9CC7;
  --violet:#8B6BFF;
  --reward:#FFC24B;
  --text-1:#E9F0FF;
  --text-2:#A6B4D6;
  --text-3:#6B7A9E;
  --line:rgba(130,165,255,.14);
  --line-strong:rgba(130,165,255,.28);
  --radius:16px;
  --radius-lg:20px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --font-cn:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  min-height:100%;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:
    radial-gradient(900px 620px at 10% -6%, rgba(53,208,255,.16), transparent 62%),
    radial-gradient(820px 540px at 90% 6%, rgba(139,107,255,.16), transparent 64%),
    linear-gradient(180deg,var(--ink-950),var(--ink-900) 46%,var(--ink-950));
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.55;
  background-image:
    radial-gradient(1.4px 1.4px at 22px 34px, rgba(233,240,255,.55), transparent 55%),
    radial-gradient(1.2px 1.2px at 138px 96px, rgba(111,226,255,.46), transparent 55%),
    radial-gradient(1.6px 1.6px at 232px 168px, rgba(139,107,255,.42), transparent 55%),
    radial-gradient(1px 1px at 84px 210px, rgba(233,240,255,.35), transparent 55%);
  background-size:300px 260px,360px 320px,420px 380px,240px 220px;
}
header,main,footer,.nav-drawer{position:relative;z-index:1;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}

.container.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
@media (max-width:768px){
  .container.container{padding:0 16px;}
}

.skip-link{
  position:absolute;left:-9999px;top:0;
  padding:10px 18px;border-radius:0 0 12px 0;
  background:var(--primary);color:#04121C;font-size:14px;font-weight:600;
}
.skip-link:focus{left:0;z-index:200;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,7,15,.55);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(5,7,15,.88);
  border-bottom-color:var(--line);
  box-shadow:0 14px 34px -26px rgba(0,0,0,.95);
}
.nav-row{
  display:flex;
  align-items:center;
  gap:20px;
  padding:14px 0 10px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--text-1);
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:11px;
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg,rgba(53,208,255,.2),rgba(139,107,255,.16));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 0 22px -10px rgba(53,208,255,.8);
}
.brand-text{white-space:nowrap;}
.brand-text span{
  background:linear-gradient(100deg,var(--primary),var(--violet));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.nav-search{
  display:flex;
  align-items:center;
  gap:10px;
  flex:1 1 auto;
  max-width:520px;
  margin:0 auto;
  padding:5px 5px 5px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(28,40,80,.55),rgba(10,16,36,.35));
  backdrop-filter:blur(14px) saturate(120%);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.nav-search:focus-within{
  border-color:rgba(53,208,255,.6);
  box-shadow:0 0 0 3px rgba(53,208,255,.16);
}
.nav-search input{
  flex:1 1 auto;
  min-width:0;
  border:0;
  outline:none;
  background:transparent;
  color:var(--text-1);
  font-size:14px;
  font-family:inherit;
  padding:8px 0;
}
.nav-search input::placeholder{color:var(--text-3);}
.search-btn{
  flex-shrink:0;
  border:0;
  cursor:pointer;
  padding:8px 18px;
  border-radius:999px;
  font-size:13.5px;
  font-weight:600;
  color:#04121C;
  background:linear-gradient(100deg,var(--primary),var(--violet));
  box-shadow:0 0 20px -8px rgba(53,208,255,.85);
  transition:filter .25s ease,transform .2s ease;
}
.search-btn:hover{filter:brightness(1.08);}
.search-btn:active{transform:translateY(1px);}
.nav-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  margin-left:auto;
}
.btn-primary{
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 24px;
  border-radius:999px;
  border:0;
  cursor:pointer;
  font-size:14.5px;
  font-weight:600;
  color:#04121C;
  background:linear-gradient(100deg,var(--primary),var(--violet));
  box-shadow:0 0 24px -6px rgba(53,208,255,.55);
  transition:filter .25s ease,transform .22s ease,box-shadow .25s ease,box-shadow .25s ease;
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 32px -4px rgba(53,208,255,.7);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 14px -8px rgba(53,208,255,.6);}
.btn-primary:focus-visible{outline:2px solid rgba(53,208,255,.45);outline-offset:2px;}
.btn-ghost{
  align-items:center;
  justify-content:center;
  gap:6px;
  padding:9px 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  color:var(--text-2);
  font-size:13.5px;
  font-weight:500;
  cursor:pointer;
  transition:border-color .25s ease,color .25s ease,background .25s ease;
}
.btn-ghost:hover{border-color:rgba(53,208,255,.6);color:var(--primary);background:rgba(53,208,255,.06);}
.btn-ghost:focus-visible{outline:2px solid rgba(53,208,255,.45);outline-offset:2px;}
.btn-sm{padding:8px 16px;font-size:13.5px;}
.menu-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:11px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text-1);
  cursor:pointer;
  transition:border-color .25s ease,color .25s ease;
}
.menu-toggle:hover{border-color:rgba(53,208,255,.6);color:var(--primary);}
@media (min-width:1024px){
  .menu-toggle{display:none;}
}
.nav-chips{
  display:flex;
  align-items:center;
  gap:10px;
  padding:4px 0 14px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex-shrink:0;
  padding:6px 15px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:13.5px;
  white-space:nowrap;
  transition:border-color .25s ease,color .25s ease,background .25s ease;
}
.chip:hover{border-color:rgba(53,208,255,.5);color:var(--primary);}
.chip-active{
  border-color:rgba(53,208,255,.62);
  color:var(--primary);
  background:rgba(53,208,255,.1);
}
@media (max-width:1023px){
  .nav-row{flex-wrap:wrap;gap:12px;}
  .nav-search{order:5;flex:1 0 100%;max-width:none;margin:0;}
  .nav-actions{margin-left:auto;}
}

/* ---------- drawer ---------- */
.nav-drawer{
  position:fixed;
  inset:0;
  z-index:120;
  pointer-events:none;
  opacity:0;
  transition:opacity .3s ease;
}
.nav-drawer.is-open{pointer-events:auto;opacity:1;}
.drawer-mask{
  position:absolute;inset:0;
  background:rgba(3,5,12,.72);
  backdrop-filter:blur(3px);
}
.drawer-panel{
  position:absolute;
  top:0;right:0;
  width:min(340px,86vw);
  height:100%;
  padding:22px 20px;
  overflow-y:auto;
  background:linear-gradient(170deg,rgba(18,26,50,.96),rgba(6,10,24,.98));
  border-left:1px solid var(--line);
  box-shadow:-24px 0 60px -30px rgba(0,0,0,.95);
  transform:translateX(100%);
  transition:transform .34s cubic-bezier(.32,.72,.3,1);
}
.nav-drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:34px;height:34px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text-2);
  font-size:20px;
  line-height:1;
  cursor:pointer;
  transition:color .25s ease,border-color .25s ease;
}
.drawer-close:hover{color:var(--primary);border-color:rgba(53,208,255,.6);}
.drawer-search{
  display:flex;
  align-items:center;
  gap:8px;
  margin:18px 0 20px;
  padding:4px 4px 4px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.drawer-search input{
  flex:1 1 auto;
  min-width:0;
  padding:9px 0;
  border:0;outline:none;background:transparent;
  color:var(--text-1);font-size:14px;font-family:inherit;
}
.drawer-search input::placeholder{color:var(--text-3);}
.drawer-links{display:flex;flex-direction:column;gap:6px;}
.drawer-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:12px 14px;
  border-radius:12px;
  border:1px solid transparent;
  color:var(--text-2);
  font-size:14.5px;
  transition:background .25s ease,color .25s ease,border-color .25s ease;
}
.drawer-links a:hover{background:rgba(53,208,255,.08);color:var(--text-1);border-color:var(--line);}
.drawer-links a.is-active{color:var(--primary);border-color:rgba(53,208,255,.45);background:rgba(53,208,255,.08);}

/* ---------- article head ---------- */
.article-head{
  padding:34px 0 8px;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:9px;
  flex-wrap:wrap;
  font-size:13.5px;
  color:var(--text-3);
}
.breadcrumb a{color:var(--text-2);transition:color .25s ease;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:rgba(130,165,255,.4);}
.breadcrumb .crumb-cat{
  color:var(--primary-light);
}
.breadcrumb .current{
  max-width:46ch;
  overflow:hidden;
  white-space:nowrap;
  text-overflow:ellipsis;
  color:var(--text-2);
}
.head-inner{
  margin-top:22px;
  max-width:900px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 13px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
}
.badge-cyan{background:rgba(53,208,255,.14);border:1px solid rgba(53,208,255,.4);color:var(--primary-light);}
.badge-violet{background:rgba(139,107,255,.16);border:1px solid rgba(139,107,255,.42);color:#C3B4FF;}
.badge-gold{background:rgba(255,194,75,.14);border:1px solid rgba(255,194,75,.42);color:var(--reward);}
.article-title{
  margin-top:16px;
  font-size:clamp(26px,3.6vw,42px);
  font-weight:700;
  line-height:1.22;
  letter-spacing:-.02em;
  color:var(--text-1);
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:14px;
  margin-top:18px;
  font-size:13.5px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.article-meta .meta-num{font-family:var(--font-num);color:var(--text-2);}
.meta-dot{
  width:4px;height:4px;border-radius:50%;
  background:rgba(130,165,255,.45);
  display:inline-block;
}
.article-cover{
  margin:30px 0 0;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(28,40,80,.5),rgba(10,16,36,.35));
  box-shadow:var(--shadow-card);
}
.article-cover img{
  width:100%;
  aspect-ratio:16/7;
  object-fit:cover;
  opacity:.92;
}

/* ---------- article layout ---------- */
.article-layout{
  padding:44px 0 20px;
}
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 304px;
  gap:40px;
  align-items:start;
}
.article-panel{
  padding:34px clamp(20px,3vw,42px);
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(28,40,80,.55),rgba(10,16,36,.35));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
}
.article-body{
  color:var(--text-2);
  font-size:16px;
  line-height:1.9;
  max-width:760px;
  margin:0 auto;
  overflow-wrap:anywhere;
}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  margin:2.1em 0 .85em;
  padding-left:14px;
  border-left:3px solid var(--primary);
  font-size:clamp(20px,2.2vw,26px);
  font-weight:700;
  line-height:1.45;
  letter-spacing:-.01em;
  color:var(--text-1);
}
.article-body h2:first-child{margin-top:0;}
.article-body h3{
  margin:1.7em 0 .7em;
  font-size:19px;
  font-weight:700;
  line-height:1.5;
  color:var(--text-1);
}
.article-body h4{
  margin:1.4em 0 .6em;
  font-size:16.5px;
  font-weight:600;
  color:var(--text-1);
}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.35em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:.45em 0;}
.article-body ul li::marker{color:var(--primary);}
.article-body ol li::marker{color:var(--primary);font-variant-numeric:tabular-nums;}
.article-body a{
  color:var(--primary);
  border-bottom:1px solid rgba(53,208,255,.38);
  transition:border-color .25s ease,color .25s ease;
}
.article-body a:hover{border-bottom-color:var(--primary);color:var(--primary-light);}
.article-body strong{color:var(--text-1);font-weight:600;}
.article-body blockquote{
  margin:1.6em 0;
  padding:16px 20px;
  border-left:3px solid var(--violet);
  border-radius:0 14px 14px 0;
  background:rgba(139,107,255,.09);
  color:var(--text-1);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body hr{
  margin:2.4em 0;
  border:0;
  height:1px;
  background:linear-gradient(90deg,rgba(53,208,255,.35),rgba(139,107,255,.25),transparent);
}
.article-body img{
  width:100%;
  margin:1.5em 0;
  border-radius:14px;
  border:1px solid var(--line);
}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{
  margin-top:8px;
  font-size:13px;
  color:var(--text-3);
  text-align:center;
}
.article-body table{
  width:100%;
  margin:1.6em 0;
  border-collapse:collapse;
  font-size:14.5px;
}
.article-body th{
  padding:12px 14px;
  text-align:left;
  font-weight:600;
  color:var(--text-1);
  background:rgba(53,208,255,.08);
  border-bottom:1px solid var(--line-strong);
}
.article-body td{
  padding:12px 14px;
  border-bottom:1px solid var(--line);
}
.article-body tbody tr:nth-child(even) td{background:rgba(255,255,255,.016);}
.article-body code{
  padding:2px 6px;
  border-radius:6px;
  font-family:var(--font-num);
  font-size:13.5px;
  background:rgba(53,208,255,.1);
  color:var(--primary-light);
}
@media (max-width:640px){
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
}

/* ---------- empty ---------- */
.article-empty{
  max-width:560px;
  margin:0 auto;
  padding:26px 0 10px;
  text-align:center;
}
.article-empty .empty-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:66px;height:66px;
  border-radius:20px;
  border:1px solid var(--line);
  background:rgba(53,208,255,.07);
  color:var(--primary);
  margin-bottom:18px;
}
.empty-title{font-size:20px;font-weight:700;color:var(--text-1);}
.empty-desc{margin-top:10px;font-size:14.5px;color:var(--text-3);}
.article-empty .btn-primary{margin-top:22px;}

/* ---------- side ---------- */
.article-side{
  display:flex;
  flex-direction:column;
  gap:20px;
  position:sticky;
  top:112px;
}
.side-card{
  padding:20px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(28,40,80,.55),rgba(10,16,36,.35));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
}
.side-title{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:700;
  color:var(--text-1);
  padding-bottom:12px;
  margin-bottom:12px;
  border-bottom:1px solid var(--line);
}
.side-title::before{
  content:"";
  width:3px;height:14px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--violet));
}
.side-links{display:flex;flex-direction:column;}
.side-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:10px 10px;
  border-radius:10px;
  font-size:14px;
  color:var(--text-2);
  transition:background .25s ease,color .25s ease,padding-left .25s ease;
}
.side-links a:hover{background:rgba(53,208,255,.08);color:var(--primary);padding-left:14px;}
.side-links a span.arrow{color:var(--text-3);font-size:13px;font-family:var(--font-num);}
.side-note{
  font-size:13.5px;
  line-height:1.8;
  color:var(--text-3);
}
.side-stat{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  padding:9px 0;
  border-bottom:1px dashed rgba(130,165,255,.16);
  font-size:13.5px;
  color:var(--text-3);
}
.side-stat:last-child{border-bottom:0;}
.side-stat b{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:17px;
  font-weight:700;
  color:var(--primary);
}
.side-stat b.gold{color:var(--reward);}
@media (max-width:1024px){
  .article-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .article-side{position:static;top:auto;}
}

/* ---------- related ---------- */
.section{padding:56px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:26px;
}
.section-title{
  font-size:clamp(21px,2.4vw,28px);
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--text-1);
}
.section-sub{
  margin-top:8px;
  font-size:14px;
  color:var(--text-3);
}
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.rel-card{
  display:flex;
  gap:14px;
  padding:16px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(28,40,80,.5),rgba(10,16,36,.32));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.rel-card:hover{
  transform:translateY(-3px);
  border-color:rgba(53,208,255,.4);
  box-shadow:var(--shadow-card),0 0 28px -8px rgba(53,208,255,.5);
}
.rel-thumb{
  flex-shrink:0;
  width:120px;
  height:84px;
  border-radius:12px;
  overflow:hidden;
  border:1px solid var(--line);
  background:rgba(10,16,36,.6);
}
.rel-thumb img{width:100%;height:100%;object-fit:cover;opacity:.9;}
.rel-body{min-width:0;display:flex;flex-direction:column;gap:8px;}
.rel-body h3{
  font-size:15.5px;
  font-weight:600;
  line-height:1.5;
  color:var(--text-1);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-meta{
  font-size:12.5px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
@media (max-width:900px){
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:640px){
  .rel-grid{grid-template-columns:1fr;}
  .rel-card{flex-direction:column;}
  .rel-thumb{width:100%;height:150px;}
}

/* ---------- pager ---------- */
.pager{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
  margin-top:34px;
}
.pager-item{
  display:flex;
  flex-direction:column;
  gap:8px;
  padding:20px 22px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(28,40,80,.5),rgba(10,16,36,.32));
  box-shadow:var(--shadow-card);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.pager-item:hover{
  transform:translateY(-3px);
  border-color:rgba(53,208,255,.42);
  box-shadow:var(--shadow-card),0 0 26px -10px rgba(53,208,255,.55);
}
.pager-label{
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--text-3);
  text-transform:uppercase;
  font-family:var(--font-num);
}
.pager-text{
  font-size:15.5px;
  font-weight:600;
  color:var(--text-1);
  line-height:1.5;
}
.pager-item.is-next{text-align:right;}
@media (max-width:640px){
  .pager{grid-template-columns:1fr;}
  .pager-item.is-next{text-align:left;}
}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  padding:44px clamp(22px,4vw,52px);
  border-radius:var(--radius-lg);
  border:1px solid rgba(53,208,255,.26);
  background:
    radial-gradient(600px 260px at 15% 0%, rgba(53,208,255,.2), transparent 65%),
    radial-gradient(520px 240px at 90% 100%, rgba(139,107,255,.2), transparent 66%),
    linear-gradient(160deg,rgba(28,40,80,.62),rgba(8,12,28,.7));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  text-align:center;
  box-shadow:var(--shadow-card);
}
.cta-band h2{
  font-size:clamp(20px,2.4vw,26px);
  font-weight:700;
  color:var(--text-1);
}
.cta-band p{
  margin:12px auto 0;
  max-width:620px;
  font-size:14.5px;
  color:var(--text-2);
}
.cta-actions{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:14px;
  flex-wrap:wrap;
  margin-top:24px;
}
.cta-note{
  margin-top:14px;
  font-size:12.5px;
  color:var(--text-3);
}
@keyframes pulseGlow{
  0%,100%{box-shadow:0 0 22px -6px rgba(53,208,255,.5);}
  50%{box-shadow:0 0 34px 2px rgba(53,208,255,.72);}
}
.pulse{animation:pulseGlow 3.2s ease-in-out infinite;}
@media (prefers-reduced-motion:reduce){
  .pulse{animation:none;}
  *{scroll-behavior:auto!important;}
}

/* ---------- footer ---------- */
.site-footer{
  margin-top:60px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,15,31,.6),rgba(5,7,15,.92));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:34px;
  padding:52px 0 34px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:16.5px;
  font-weight:700;
  color:var(--text-1);
  margin-bottom:14px;
}
.footer-desc{
  font-size:13.5px;
  line-height:1.85;
  color:var(--text-3);
  max-width:330px;
}
.footer-title{
  font-size:14px;
  font-weight:700;
  color:var(--text-1);
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a,.footer-links span{
  font-size:13.5px;
  color:var(--text-3);
  transition:color .25s ease;
}
.footer-links a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  padding:18px 0 26px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--text-3);
}
@media (max-width:900px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr;padding:40px 0 24px;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn-primary,.cta-actions .btn-ghost{width:100%;}
}

/* ---------- entrance animation ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  animation:revealUp .5s ease forwards;
}
@keyframes revealUp{
  to{opacity:1;transform:translateY(0);}
}
.reveal.d1{animation-delay:.06s;}
.reveal.d2{animation-delay:.12s;}
.reveal.d3{animation-delay:.18s;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;animation:none;}
}

/* roulang page: category2 */
:root{
  --ink-950:#05070F;
  --ink-900:#0A0F1F;
  --ink-800:#121A32;
  --ink-700:#1B2544;
  --primary:#35D0FF;
  --primary-bright:#6FE2FF;
  --primary-dark:#1F9CC7;
  --violet:#8B6BFF;
  --reward:#FFC24B;
  --text-1:#E9F0FF;
  --text-2:#A6B4D6;
  --text-3:#6B7A9E;
  --line:rgba(130,165,255,.14);
  --line-strong:rgba(130,165,255,.28);
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:20px;
  --radius-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-glow:0 0 24px -6px rgba(53,208,255,.55);
  --section-gap:96px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:linear-gradient(180deg,var(--ink-950) 0%,var(--ink-900) 46%,#070C19 100%);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(680px 420px at 10% 6%, rgba(53,208,255,.10), transparent 62%),
    radial-gradient(760px 480px at 90% 18%, rgba(139,107,255,.13), transparent 64%),
    radial-gradient(900px 520px at 50% 104%, rgba(53,208,255,.07), transparent 70%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.55;
  background-image:
    radial-gradient(1.2px 1.2px at 40px 60px, rgba(233,240,255,.55), transparent 100%),
    radial-gradient(1px 1px at 190px 150px, rgba(139,107,255,.5), transparent 100%),
    radial-gradient(1px 1px at 330px 80px, rgba(53,208,255,.45), transparent 100%),
    radial-gradient(1px 1px at 260px 240px, rgba(233,240,255,.35), transparent 100%);
  background-size:420px 300px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid rgba(53,208,255,.65);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:2}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums}
.section{padding:var(--section-gap) 0;position:relative;z-index:2}
.section-head{max-width:720px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;color:var(--primary);
  border:1px solid rgba(53,208,255,.28);background:rgba(53,208,255,.08);
  padding:5px 14px;border-radius:var(--radius-pill);margin-bottom:18px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px 2px rgba(53,208,255,.6)}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.15;font-weight:700;letter-spacing:-.02em}
h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
h3{font-size:20px;line-height:1.45;font-weight:600}
.lead{font-size:17px;color:var(--text-2);line-height:1.9}
.muted{color:var(--text-2)}
.dim{color:var(--text-3);font-size:14px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,7,15,.72);
  backdrop-filter:blur(14px) saturate(130%);
  -webkit-backdrop-filter:blur(14px) saturate(130%);
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,10,22,.92);
  border-bottom-color:var(--line);
  box-shadow:0 14px 34px -26px rgba(0,0,0,.95);
}
.nav-row{display:flex;align-items:center;gap:20px;padding:14px 0 10px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg, rgba(53,208,255,.22), rgba(139,107,255,.22));
  border:1px solid var(--line-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.brand-text{font-weight:700;font-size:17px;letter-spacing:-.01em;color:var(--text-1);white-space:nowrap}
.brand-text span{color:var(--primary)}
.nav-search{
  flex:1 1 42%;max-width:46%;min-width:220px;
  display:flex;align-items:center;gap:10px;
  padding:6px 6px 6px 16px;
  border-radius:var(--radius-pill);
  background:rgba(18,26,50,.66);
  border:1px solid var(--line);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.nav-search:focus-within{border-color:rgba(53,208,255,.55);box-shadow:0 0 0 4px rgba(53,208,255,.10)}
.nav-search input{
  flex:1;min-width:0;background:transparent;border:none;outline:none;
  font-size:14px;color:var(--text-1);padding:6px 0;
}
.nav-search input::placeholder{color:var(--text-3)}
.search-btn{
  padding:8px 18px;border-radius:var(--radius-pill);font-size:14px;font-weight:600;
  color:#04121B;background:linear-gradient(100deg,#35D0FF,#8B6BFF);
  box-shadow:var(--shadow-glow);
  transition:transform .2s var(--ease),filter .2s var(--ease);
}
.search-btn:hover{filter:brightness(1.08)}
.search-btn:active{transform:translateY(1px)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.menu-toggle{
  width:40px;height:40px;border-radius:12px;
  display:none;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-2);
  transition:border-color .25s var(--ease),color .25s var(--ease);
}
.menu-toggle:hover{border-color:var(--primary);color:var(--primary)}
.nav-chips{
  display:flex;align-items:center;gap:10px;padding:8px 0 14px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;padding:6px 15px;border-radius:var(--radius-pill);
  font-size:13px;color:var(--text-2);border:1px solid var(--line);
  background:rgba(18,26,50,.4);
  transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.chip:hover{color:var(--primary);border-color:rgba(53,208,255,.45)}
.chip-active{color:var(--primary);border-color:rgba(53,208,255,.6);background:rgba(53,208,255,.12);font-weight:600}

/* ============ 按钮 ============ */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:700;color:#04121B;
  background:linear-gradient(100deg,#35D0FF,#8B6BFF);
  box-shadow:var(--shadow-glow);
  transition:transform .22s var(--ease),filter .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-pill);
  font-size:15px;color:var(--text-2);border:1px solid var(--line);
  background:rgba(18,26,50,.32);
  transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.btn-ghost:hover{color:var(--primary);border-color:rgba(53,208,255,.5);background:rgba(53,208,255,.07)}
.btn-sm{padding:9px 18px;font-size:14px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;
  text-underline-offset:3px;transition:gap .22s var(--ease);
}
.link-arrow:hover{gap:10px;text-decoration:underline}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ============ 玻璃卡片 ============ */
.glass{
  background:linear-gradient(160deg, rgba(28,40,80,.55), rgba(10,16,36,.35));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color .28s var(--ease),transform .28s var(--ease),box-shadow .28s var(--ease);
}
.glass-hover:hover{
  border-color:rgba(53,208,255,.4);
  transform:translateY(-3px);
  box-shadow:0 0 28px -8px rgba(53,208,255,.5),var(--shadow-card);
}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(180deg, rgba(5,7,15,.70) 0%, rgba(5,7,15,.88) 62%, rgba(5,7,15,.96) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover,cover;
  background-position:center,center;
  padding:72px 0 64px;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(560px 320px at 82% 18%, rgba(139,107,255,.20), transparent 66%);
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;position:relative;z-index:2}
.hero-copy h1{margin-bottom:20px}
.hero-copy .lead{max-width:560px;margin-bottom:28px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.stat-pill{
  min-width:130px;padding:14px 18px;border-radius:var(--radius);
  background:linear-gradient(160deg, rgba(28,40,80,.6), rgba(10,16,36,.4));
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.stat-pill .num{font-family:ui-monospace,monospace;font-variant-numeric:tabular-nums;font-size:22px;font-weight:700;color:var(--primary-bright);display:block;line-height:1.2}
.stat-pill .lbl{font-size:13px;color:var(--text-3)}
.hero-visual{position:relative}
.hero-visual img{width:100%;height:340px;object-fit:cover;border-radius:var(--radius-lg);border:1px solid var(--line);box-shadow:var(--shadow-card)}
.float-card{
  position:absolute;left:-22px;bottom:-26px;width:250px;padding:16px 18px;border-radius:var(--radius);
  background:linear-gradient(160deg, rgba(28,40,80,.85), rgba(10,16,36,.7));
  border:1px solid rgba(53,208,255,.32);backdrop-filter:blur(12px);
  box-shadow:0 22px 44px -26px rgba(0,0,0,.95);
}
.float-card .fc-title{font-size:13px;color:var(--text-3);margin-bottom:6px}
.float-card .fc-val{font-family:ui-monospace,monospace;font-size:24px;font-weight:700;color:var(--text-1)}
.float-card .fc-sub{font-size:12px;color:var(--primary)}

/* ============ 筛选 chips ============ */
.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:18px 20px;border-radius:var(--radius);
  background:linear-gradient(160deg, rgba(28,40,80,.45), rgba(10,16,36,.28));
  border:1px solid var(--line);
}
.filter-bar .fb-label{font-size:13px;color:var(--text-3);margin-right:6px}
.fchip{
  padding:7px 16px;border-radius:var(--radius-pill);font-size:13px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(18,26,50,.45);
  transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.fchip:hover{color:var(--primary-bright);border-color:rgba(53,208,255,.5)}
.fchip.is-on{color:#04121B;font-weight:700;border-color:transparent;background:linear-gradient(100deg,#35D0FF,#8B6BFF)}

/* ============ 时间轴 ============ */
.timeline{position:relative;margin-top:34px}
.timeline::before{
  content:"";position:absolute;left:112px;top:10px;bottom:10px;width:1px;
  background:linear-gradient(180deg, rgba(53,208,255,.45), rgba(139,107,255,.28), rgba(53,208,255,0) 96%);
}
.tl-item{display:grid;grid-template-columns:96px 1fr;gap:32px;align-items:start;padding-bottom:22px}
.tl-date{text-align:right;padding-top:16px}
.tl-date .d1{display:block;font-family:ui-monospace,monospace;font-size:18px;font-weight:700;color:var(--text-1);line-height:1.3}
.tl-date .d2{display:block;font-size:12px;color:var(--text-3)}
.tl-card{padding:18px 22px;border-radius:var(--radius);position:relative}
.tl-card::before{
  content:"";position:absolute;left:-38px;top:26px;width:11px;height:11px;border-radius:50%;
  background:var(--ink-900);border:2px solid var(--primary);box-shadow:0 0 12px 1px rgba(53,208,255,.55);
}
.tl-card.is-done::before{border-color:var(--text-3);box-shadow:none}
.tl-card.is-live::before{border-color:var(--reward);box-shadow:0 0 12px 1px rgba(255,194,75,.5)}
.tl-top{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px}
.tl-title{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:6px}
.tl-desc{font-size:14px;color:var(--text-2)}
.tl-meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:12px;font-size:13px;color:var(--text-3)}
.tl-meta b{color:var(--text-1);font-family:ui-monospace,monospace;font-weight:700}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 11px;border-radius:var(--radius-pill);font-size:12px;font-weight:600;line-height:1.7;
}
.badge-cyan{color:var(--primary);background:rgba(53,208,255,.12);border:1px solid rgba(53,208,255,.3)}
.badge-violet{color:#B8A5FF;background:rgba(139,107,255,.14);border:1px solid rgba(139,107,255,.34)}
.badge-gold{color:var(--reward);background:rgba(255,194,75,.12);border:1px solid rgba(255,194,75,.32)}
.badge-mute{color:var(--text-3);background:rgba(107,122,158,.14);border:1px solid var(--line)}

/* ============ 指标条 ============ */
.metric-list{display:grid;gap:16px;margin-top:28px}
.metric{
  display:grid;grid-template-columns:170px 1fr 92px;align-items:center;gap:18px;
  padding:16px 20px;border-radius:var(--radius);
  background:linear-gradient(160deg, rgba(28,40,80,.5), rgba(10,16,36,.3));
  border:1px solid var(--line);
}
.metric .m-name{font-size:14px;color:var(--text-2)}
.metric .m-track{height:8px;border-radius:var(--radius-pill);background:rgba(130,165,255,.12);overflow:hidden}
.metric .m-fill{height:100%;border-radius:var(--radius-pill);background:linear-gradient(90deg,#35D0FF,#8B6BFF);box-shadow:0 0 16px -4px rgba(53,208,255,.75)}
.metric .m-val{text-align:right;font-family:ui-monospace,monospace;font-weight:700;font-size:17px;color:var(--text-1)}

/* ============ 焦点对阵卡 ============ */
.focus-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:34px}
.focus-card{overflow:hidden;border-radius:var(--radius-lg)}
.focus-card:nth-child(2){margin-top:34px}
.focus-card img{width:100%;height:196px;object-fit:cover;border-bottom:1px solid var(--line)}
.focus-body{padding:22px 24px 26px}
.focus-title{font-size:19px;font-weight:600;margin-bottom:8px;line-height:1.5}
.focus-desc{font-size:14px;color:var(--text-2);margin-bottom:16px}
.focus-list{display:grid;gap:10px}
.focus-list li{display:flex;justify-content:space-between;gap:12px;font-size:14px;padding-bottom:10px;border-bottom:1px dashed var(--line)}
.focus-list li:last-child{border-bottom:none;padding-bottom:0}
.focus-list span:last-child{color:var(--primary-bright);font-family:ui-monospace,monospace;font-weight:600}

/* ============ 流程步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative;margin-top:36px}
.steps::before{
  content:"";position:absolute;left:6%;right:6%;top:34px;height:1px;
  background:linear-gradient(90deg, rgba(53,208,255,.05), rgba(53,208,255,.45), rgba(139,107,255,.4), rgba(53,208,255,.05));
}
.step{position:relative;padding-top:0}
.step-num{
  display:block;font-family:ui-monospace,monospace;font-size:40px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(53,208,255,.55);margin-bottom:16px;
}
.step-dot{
  position:absolute;top:28px;right:0;width:11px;height:11px;border-radius:50%;
  background:var(--ink-900);border:2px solid var(--primary);box-shadow:0 0 12px 1px rgba(53,208,255,.5);
}
.step h3{margin-bottom:8px;font-size:18px}
.step p{font-size:14px;color:var(--text-2)}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:52px;align-items:start}
.faq-list{display:grid;gap:12px}
.faq-item{
  border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(28,40,80,.48), rgba(10,16,36,.3));
  overflow:hidden;transition:border-color .28s var(--ease);
}
.faq-item.is-open{border-color:rgba(53,208,255,.45)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--text-1);
  min-height:56px;position:relative;
}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px 1px rgba(53,208,255,.6);
}
.faq-q .caret{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-3);
  transition:transform .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease);
}
.faq-item.is-open .caret{transform:rotate(180deg);color:var(--primary);border-color:rgba(53,208,255,.5)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .38s var(--ease)}
.faq-a-inner{padding:0 22px 20px;font-size:15px;color:var(--text-2);opacity:0;transition:opacity .35s var(--ease) .05s}
.faq-item.is-open .faq-a-inner{opacity:1}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  border:1px solid rgba(53,208,255,.28);
  background:
    radial-gradient(520px 240px at 18% 20%, rgba(53,208,255,.20), transparent 62%),
    radial-gradient(520px 260px at 84% 80%, rgba(139,107,255,.22), transparent 64%),
    linear-gradient(160deg, rgba(28,40,80,.72), rgba(8,12,26,.85));
  padding:52px 40px;text-align:center;
  box-shadow:var(--shadow-card);
}
.cta-band h2{margin-bottom:14px}
.cta-band p{max-width:620px;margin:0 auto 26px;color:var(--text-2)}
.cta-note{margin-top:18px;font-size:13px;color:var(--text-3)}
.pulse{animation:pulseGlow 3.2s ease-in-out infinite}
@keyframes pulseGlow{
  0%,100%{box-shadow:0 0 24px -6px rgba(53,208,255,.55)}
  50%{box-shadow:0 0 32px 0 rgba(53,208,255,.75)}
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:20px;border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(5,7,15,.4), rgba(5,7,15,.85));
  padding:56px 0 26px;position:relative;z-index:2;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-desc{font-size:14px;color:var(--text-3);line-height:1.8;max-width:340px}
.footer-title{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:16px}
.footer-links{display:grid;gap:11px;font-size:14px;color:var(--text-3)}
.footer-links a{transition:color .2s var(--ease)}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}

/* ============ 抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,5,12,.68);backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);z-index:80;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:90;
  background:linear-gradient(180deg,#0A0F1F,#070B18);
  border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .34s var(--ease);
  padding:22px 20px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-close{
  width:38px;height:38px;border-radius:12px;border:1px solid var(--line);color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;
}
.drawer-search{
  display:flex;align-items:center;gap:10px;padding:6px 6px 6px 14px;border-radius:var(--radius-pill);
  background:rgba(18,26,50,.7);border:1px solid var(--line);margin-bottom:22px;
}
.drawer-search input{flex:1;min-width:0;background:transparent;border:none;outline:none;font-size:14px}
.drawer-nav{display:grid;gap:8px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 16px;border-radius:12px;font-size:15px;color:var(--text-2);
  border:1px solid transparent;transition:all .22s var(--ease);
}
.drawer-nav a:hover{color:var(--primary);border-color:rgba(53,208,255,.32);background:rgba(53,208,255,.07)}
.drawer-nav a.is-on{color:var(--primary);border-color:rgba(53,208,255,.45);background:rgba(53,208,255,.1);font-weight:600}

/* ============ 响应式 ============ */
@media (min-width:1024px){
  .menu-toggle{display:none}
}
@media (max-width:1023px){
  :root{--section-gap:72px}
  .nav-row{flex-wrap:wrap;gap:14px}
  .nav-search{order:3;flex:1 1 100%;max-width:none;min-width:0}
  .desktop-only{display:none}
  .menu-toggle{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero{padding:56px 0 52px;min-height:420px}
  .hero-visual img{height:280px}
  .float-card{position:static;width:100%;margin-top:16px}
  .focus-grid{grid-template-columns:1fr}
  .focus-card:nth-child(2){margin-top:0}
  .steps{grid-template-columns:1fr 1fr}
  .steps::before{display:none}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .metric{grid-template-columns:130px 1fr 78px;gap:14px}
}
@media (max-width:767px){
  :root{--section-gap:56px}
  .container{padding:0 16px}
  .brand-text{font-size:16px}
  .timeline::before{left:7px}
  .tl-item{grid-template-columns:1fr;gap:10px;padding-left:26px}
  .tl-date{text-align:left;padding-top:0;display:flex;align-items:baseline;gap:10px}
  .tl-date .d1{font-size:15px}
  .tl-card::before{left:-26px;top:24px;width:9px;height:9px}
  .metric{grid-template-columns:1fr;gap:10px}
  .metric .m-val{text-align:left}
  .cta-band{padding:40px 22px}
  .footer-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .btn-row .btn-primary,.btn-row .btn-ghost{width:100%}
}
@media (max-width:520px){
  h1{font-size:29px}
  .hero-stats{gap:10px}
  .stat-pill{flex:1 1 100%}
  .filter-bar{padding:14px}
  .faq-q{padding:16px 18px;font-size:15px}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --ink-950:#05070F;
  --ink-900:#0A0F1F;
  --ink-800:#121A32;
  --ink-700:#1B2544;
  --primary:#35D0FF;
  --primary-light:#6FE2FF;
  --primary-dark:#1F9CC7;
  --violet:#8B6BFF;
  --reward:#FFC24B;
  --text-1:#E9F0FF;
  --text-2:#A6B4D6;
  --text-3:#6B7A9E;
  --line:rgba(130,165,255,.14);
  --glass:linear-gradient(160deg, rgba(28,40,80,.55), rgba(10,16,36,.35));
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:20px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:
    radial-gradient(900px 520px at 12% -6%, rgba(53,208,255,.14), transparent 62%),
    radial-gradient(760px 480px at 88% 4%, rgba(139,107,255,.13), transparent 60%),
    radial-gradient(1100px 700px at 50% 120%, rgba(53,208,255,.07), transparent 65%),
    linear-gradient(180deg, var(--ink-950) 0%, var(--ink-900) 60%, var(--ink-950) 100%);
  background-attachment:fixed;
  min-height:100%;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid rgba(53,208,255,.45);outline-offset:2px;border-radius:6px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%}
.tabular{font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg, rgba(6,10,22,.82), rgba(6,10,22,.52));
  backdrop-filter:blur(12px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
  background:linear-gradient(180deg, rgba(5,7,15,.94), rgba(9,14,30,.86));
  border-bottom-color:var(--line);
  box-shadow:0 14px 30px -26px rgba(0,0,0,.95);
}
.nav-row{display:flex;align-items:center;gap:22px;padding:14px 0 10px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(150deg, rgba(53,208,255,.22), rgba(139,107,255,.18));
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07), 0 0 22px -10px rgba(53,208,255,.7);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;line-height:1.2;white-space:nowrap}
.brand-text span{color:var(--primary)}
.nav-search{
  flex:1 1 auto;max-width:520px;min-width:240px;
  display:flex;align-items:center;gap:10px;
  padding:8px 8px 8px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(12,19,40,.72);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.nav-search:focus-within{border-color:rgba(53,208,255,.55);box-shadow:0 0 0 3px rgba(53,208,255,.14)}
.nav-search input{
  flex:1;background:transparent;border:0;outline:none;font-size:14px;color:var(--text-1);min-width:0;
}
.nav-search input::placeholder{color:var(--text-3)}
.search-btn{
  border:0;cursor:pointer;border-radius:999px;padding:8px 18px;font-size:14px;font-weight:600;
  color:#04121B;background:linear-gradient(100deg,#35D0FF,#8B6BFF);
  box-shadow:0 0 22px -8px rgba(53,208,255,.6);
  transition:filter .2s ease,transform .2s ease;
}
.search-btn:hover{filter:brightness(1.08)}
.search-btn:active{transform:translateY(1px)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}
.menu-toggle{
  display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;
  background:rgba(18,26,50,.7);border:1px solid var(--line);cursor:pointer;color:var(--text-1);
  transition:border-color .2s ease,color .2s ease;
}
.menu-toggle:hover{border-color:rgba(53,208,255,.5);color:var(--primary)}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;cursor:pointer;border-radius:999px;padding:12px 26px;font-weight:600;font-size:15px;
  color:#04121B;background:linear-gradient(100deg,#35D0FF,#8B6BFF);
  box-shadow:0 0 24px -6px rgba(53,208,255,.55);
  transition:filter .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-primary.disabled,.btn-primary[disabled]{filter:saturate(.5);box-shadow:none;cursor:not-allowed}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid var(--line);border-radius:999px;padding:11px 22px;font-size:15px;
  color:var(--text-2);background:transparent;cursor:pointer;
  transition:border-color .22s ease,color .22s ease,transform .22s ease;
}
.btn-ghost:hover{border-color:rgba(53,208,255,.55);color:var(--primary);transform:translateY(-1px)}
.btn-sm{padding:9px 18px;font-size:14px}
.nav-chips{display:flex;gap:10px;padding:6px 0 14px;overflow-x:auto;scrollbar-width:none}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;padding:7px 16px;border-radius:999px;font-size:13.5px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(14,21,42,.5);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.chip:hover{color:var(--primary);border-color:rgba(53,208,255,.45)}
.chip-active{color:var(--primary);border-color:rgba(53,208,255,.6);background:rgba(53,208,255,.1)}

/* ---------- Drawer ---------- */
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(340px,86vw);z-index:90;
  background:linear-gradient(180deg, rgba(9,14,30,.98), rgba(5,7,15,.98));
  border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .34s cubic-bezier(.4,.1,.2,1);
  padding:22px 20px 32px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,5,12,.66);z-index:80;opacity:0;pointer-events:none;
  transition:opacity .3s ease;
}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:36px;height:36px;border-radius:11px;border:1px solid var(--line);background:transparent;cursor:pointer;color:var(--text-2)}
.drawer-close:hover{color:var(--primary);border-color:rgba(53,208,255,.5)}
.drawer-search{
  display:flex;align-items:center;gap:8px;padding:8px 8px 8px 14px;border-radius:999px;
  border:1px solid var(--line);background:rgba(12,19,40,.72);margin-bottom:20px;
}
.drawer-search input{flex:1;background:transparent;border:0;outline:none;font-size:14px;min-width:0}
.drawer-label{font-size:12.5px;letter-spacing:.08em;color:var(--text-3);margin-bottom:10px}
.drawer-links{display:flex;flex-direction:column;gap:6px}
.drawer-links a{
  padding:11px 14px;border-radius:12px;font-size:15px;color:var(--text-2);
  border:1px solid transparent;transition:all .2s ease;
}
.drawer-links a:hover{color:var(--text-1);background:rgba(53,208,255,.08);border-color:var(--line)}
.drawer-links a.active{color:var(--primary);border-color:rgba(53,208,255,.45);background:rgba(53,208,255,.08)}

/* ---------- Breadcrumb ---------- */
.crumb{padding:22px 0 0;font-size:13.5px;color:var(--text-3)}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.crumb span.sep{margin:0 8px;color:var(--text-3)}
.crumb .current{color:var(--text-1)}

/* ---------- Page hero ---------- */
.page-hero{position:relative;padding:34px 0 64px;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  opacity:.28;filter:saturate(115%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(700px 380px at 18% 10%, rgba(53,208,255,.18), transparent 65%),
    radial-gradient(620px 360px at 82% 24%, rgba(139,107,255,.16), transparent 66%),
    linear-gradient(180deg, rgba(5,7,15,.55) 0%, rgba(5,7,15,.86) 68%, var(--ink-900) 100%);
}
.page-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:40px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--primary);
  border:1px solid rgba(53,208,255,.35);background:rgba(53,208,255,.08);
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.15;font-weight:700;letter-spacing:-.02em}
.hero-sub{margin-top:18px;font-size:16.5px;color:var(--text-2);max-width:620px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--text-2);font-size:15px;padding:12px 4px;transition:color .2s ease}
.link-arrow:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.stat-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.stat-pill{
  border:1px solid var(--line);border-radius:14px;padding:12px 18px;min-width:142px;
  background:linear-gradient(160deg, rgba(28,40,80,.55), rgba(10,16,36,.35));
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.stat-pill .num{display:block;font-size:22px;font-weight:700;color:var(--primary-light);font-variant-numeric:tabular-nums;font-family:ui-monospace,Menlo,monospace}
.stat-pill .lbl{display:block;font-size:12.5px;color:var(--text-3);margin-top:2px}
.hero-card{
  border-radius:var(--radius-l);border:1px solid var(--line);overflow:hidden;
  background:linear-gradient(160deg, rgba(28,40,80,.55), rgba(10,16,36,.35));
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.06);
}
.hero-card img{width:100%;height:230px;object-fit:cover}
.hero-card-body{padding:18px 20px 20px}
.hero-card-body h3{font-size:17px;font-weight:600}
.hero-card-body p{font-size:13.5px;color:var(--text-2);margin-top:8px}
.mini-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{
  font-size:12px;padding:4px 11px;border-radius:999px;
  border:1px solid var(--line);color:var(--text-2);background:rgba(139,107,255,.12);
}
.tag-cyan{background:rgba(53,208,255,.12);color:var(--primary-light)}
.tag-gold{background:rgba(255,194,75,.14);color:var(--reward)}

/* ---------- Sections ---------- */
.section{padding:88px 0 0}
.section-head{max-width:760px;margin-bottom:38px}
.section-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15.5px}
.divider{height:1px;background:var(--line);margin:0}

/* ---------- Rule reading strip ---------- */
.read-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.strip-item{
  border:1px solid var(--line);border-radius:var(--radius-m);padding:20px 20px 22px;
  background:linear-gradient(160deg, rgba(28,40,80,.5), rgba(10,16,36,.3));
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.strip-item:hover{transform:translateY(-3px);border-color:rgba(53,208,255,.4);box-shadow:0 0 28px -8px rgba(53,208,255,.5)}
.strip-idx{font-family:ui-monospace,Menlo,monospace;font-size:13px;color:var(--violet);letter-spacing:.14em}
.strip-item h3{font-size:17px;font-weight:600;margin-top:10px}
.strip-item p{font-size:14px;color:var(--text-2);margin-top:8px}

/* ---------- Accordion ---------- */
.acc-wrap{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:38px;align-items:start}
.acc-aside{
  position:sticky;top:132px;
  border:1px solid var(--line);border-radius:var(--radius-l);padding:22px;
  background:linear-gradient(160deg, rgba(28,40,80,.5), rgba(10,16,36,.32));
  backdrop-filter:blur(14px) saturate(120%);
}
.acc-aside h3{font-size:16px;font-weight:600}
.acc-aside p{font-size:13.5px;color:var(--text-2);margin-top:10px}
.aside-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.aside-list li{font-size:13.5px;color:var(--text-2);display:flex;gap:9px;align-items:flex-start}
.aside-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);margin-top:9px;flex:0 0 auto;box-shadow:0 0 10px rgba(53,208,255,.7)}
.accordion{display:flex;flex-direction:column;gap:12px}
.acc-item{
  border:1px solid var(--line);border-radius:var(--radius-m);overflow:hidden;
  background:linear-gradient(160deg, rgba(28,40,80,.48), rgba(10,16,36,.3));
  transition:border-color .25s ease,box-shadow .25s ease;
}
.acc-item.open{border-color:rgba(53,208,255,.42);box-shadow:0 0 30px -14px rgba(53,208,255,.55)}
.acc-head{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  background:transparent;border:0;cursor:pointer;padding:18px 20px;min-height:56px;position:relative;
}
.acc-head:hover{color:var(--primary)}
.acc-num{font-family:ui-monospace,Menlo,monospace;font-size:13px;color:var(--text-3);flex:0 0 auto}
.acc-q{flex:1;font-size:16.5px;font-weight:600;color:var(--text-1)}
.acc-item.open .acc-q{color:var(--primary-light)}
.acc-arrow{flex:0 0 auto;color:var(--text-3);transition:transform .3s ease,color .25s ease}
.acc-item.open .acc-arrow{transform:rotate(180deg);color:var(--primary)}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .38s cubic-bezier(.4,.1,.2,1)}
.acc-inner{
  position:relative;padding:4px 22px 22px 22px;font-size:15px;color:var(--text-2);
  opacity:0;transform:translateY(-4px);transition:opacity .32s ease .06s,transform .32s ease .06s;
}
.acc-item.open .acc-inner{opacity:1;transform:translateY(0)}
.acc-inner::before{
  content:"";position:absolute;left:0;top:6px;bottom:20px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,#35D0FF,rgba(139,107,255,.5));
}
.acc-inner p + p{margin-top:10px}
.acc-inner ul{margin-top:10px;display:flex;flex-direction:column;gap:8px}
.acc-inner ul li{display:flex;gap:9px;align-items:flex-start;font-size:14.5px}
.acc-inner ul li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--violet);margin-top:10px;flex:0 0 auto}
.acc-note{
  margin-top:14px;font-size:13px;color:var(--text-3);border:1px dashed var(--line);
  border-radius:10px;padding:10px 14px;background:rgba(53,208,255,.04);
}

/* ---------- Table ---------- */
.table-shell{
  border:1px solid var(--line);border-radius:var(--radius-l);overflow:hidden;
  background:linear-gradient(160deg, rgba(28,40,80,.42), rgba(10,16,36,.3));
  backdrop-filter:blur(12px) saturate(120%);
}
.table-scroll{overflow-x:auto}
table.rule-table{width:100%;border-collapse:collapse;min-width:760px}
table.rule-table thead th{
  background:linear-gradient(180deg, rgba(27,37,68,.95), rgba(18,26,50,.9));
  color:var(--text-1);font-size:14px;font-weight:600;text-align:left;
  padding:0 20px;height:52px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.rule-table tbody td{
  padding:0 20px;height:48px;font-size:14px;color:var(--text-2);
  border-bottom:1px solid var(--line);vertical-align:middle;
}
table.rule-table tbody td:first-child{color:var(--text-1);font-weight:600}
table.rule-table tbody tr:nth-child(even){background:rgba(130,165,255,.03)}
table.rule-table tbody tr:hover{background:rgba(53,208,255,.06)}
table.rule-table tbody tr:last-child td{border-bottom:0}
.table-foot{padding:14px 20px;font-size:13px;color:var(--text-3);border-top:1px solid var(--line)}

/* ---------- Spec cards ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:start}
.spec-card{
  border:1px solid var(--line);border-radius:var(--radius-l);overflow:hidden;
  background:linear-gradient(160deg, rgba(28,40,80,.5), rgba(10,16,36,.32));
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.spec-card:hover{transform:translateY(-3px);border-color:rgba(53,208,255,.4);box-shadow:0 0 30px -10px rgba(53,208,255,.5)}
.spec-card img{width:100%;height:170px;object-fit:cover;opacity:.92}
.spec-card:nth-child(2){margin-top:26px}
.spec-card:nth-child(3){margin-top:52px}
.spec-body{padding:20px 22px 24px}
.spec-body h3{font-size:18px;font-weight:600}
.spec-body p{font-size:14.5px;color:var(--text-2);margin-top:10px}
.spec-list{margin-top:14px;display:flex;flex-direction:column;gap:9px}
.spec-list li{font-size:13.5px;color:var(--text-2);display:flex;gap:9px;align-items:flex-start}
.spec-list li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--reward);margin-top:9px;flex:0 0 auto}

/* ---------- QA grid ---------- */
.qa-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.qa-card{
  border:1px solid var(--line);border-radius:var(--radius-m);padding:22px;
  background:linear-gradient(160deg, rgba(28,40,80,.42), rgba(10,16,36,.3));
  transition:border-color .25s ease,transform .25s ease;
}
.qa-card:hover{border-color:rgba(53,208,255,.38);transform:translateY(-2px)}
.qa-card h3{font-size:16px;font-weight:600;display:flex;gap:10px;align-items:flex-start}
.qa-card h3 span{color:var(--primary);font-family:ui-monospace,Menlo,monospace;font-size:14px;flex:0 0 auto}
.qa-card p{font-size:14px;color:var(--text-2);margin-top:10px}

/* ---------- CTA ---------- */
.cta-band{margin-top:96px}
.cta-inner{
  border:1px solid var(--line);border-radius:var(--radius-l);padding:40px 32px;text-align:center;
  background:
    radial-gradient(520px 260px at 50% 0%, rgba(53,208,255,.16), transparent 70%),
    radial-gradient(420px 240px at 80% 100%, rgba(139,107,255,.14), transparent 70%),
    linear-gradient(160deg, rgba(28,40,80,.55), rgba(10,16,36,.4));
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);font-weight:700}
.cta-inner p{margin-top:14px;color:var(--text-2);font-size:15px}
.cta-actions{margin-top:26px;display:flex;justify-content:center}
.cta-terms{margin-top:18px;font-size:12.5px;color:var(--text-3)}
.pulse{animation:pulseGlow 3.2s ease-in-out infinite}
@keyframes pulseGlow{
  0%,100%{box-shadow:0 0 24px -6px rgba(53,208,255,.5)}
  50%{box-shadow:0 0 34px -2px rgba(53,208,255,.75)}
}

/* ---------- Footer ---------- */
.site-footer{margin-top:96px;border-top:1px solid var(--line);background:linear-gradient(180deg, rgba(8,12,26,.6), rgba(5,7,15,.95))}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;padding:56px 0 40px}
.footer-brand{display:inline-flex;align-items:center;gap:10px}
.footer-desc{margin-top:14px;font-size:13.5px;color:var(--text-3);max-width:330px}
.footer-title{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a,.footer-links span{font-size:13.5px;color:var(--text-3);transition:color .2s ease}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);padding:18px 0 26px;display:flex;justify-content:space-between;
  gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--text-3);
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .nav-search{max-width:420px;min-width:200px}
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .page-hero{padding-bottom:52px}
  .read-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .acc-wrap{grid-template-columns:1fr;gap:24px}
  .acc-aside{position:static}
  .spec-grid{grid-template-columns:1fr 1fr}
  .spec-card:nth-child(3){margin-top:26px}
  .qa-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .nav-row{flex-wrap:wrap;gap:12px;padding:12px 0 8px}
  .nav-search{order:3;width:100%;max-width:none;min-width:0;margin-top:4px}
  .desktop-only{display:flex}
  .nav-actions{gap:8px}
  .hero-card img{height:190px}
  .section{padding-top:60px}
  .spec-grid{grid-template-columns:1fr}
  .spec-card:nth-child(2),.spec-card:nth-child(3){margin-top:0}
  .qa-grid{grid-template-columns:1fr}
  .cta-inner{padding:32px 20px}
  .cta-actions .btn-primary{width:100%}
  .footer-grid{grid-template-columns:1fr;padding:40px 0 30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .read-strip{grid-template-columns:1fr}
  .stat-row{gap:10px}
  .stat-pill{min-width:0;flex:1 1 46%}
  .brand-text{font-size:15.5px}
  .acc-head{padding:16px 14px;gap:12px}
  .acc-q{font-size:15.5px}
  .acc-inner{padding:4px 16px 18px 16px}
  h1{font-size:clamp(26px,7.4vw,34px)}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category5 */
:root{
  --ink-950:#05070F; --ink-900:#0A0F1F; --ink-800:#121A32; --ink-700:#1B2544;
  --primary:#35D0FF; --primary-light:#6FE2FF; --primary-dark:#1F9CC7;
  --violet:#8B6BFF; --reward:#FFC24B;
  --text-1:#E9F0FF; --text-2:#A6B4D6; --text-3:#6B7A9E;
  --line:rgba(130,165,255,.14);
  --radius:16px; --radius-lg:20px; --radius-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --grad-primary:linear-gradient(100deg,#35D0FF,#8B6BFF);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:
    radial-gradient(780px 540px at 10% -8%, rgba(53,208,255,.16), transparent 62%),
    radial-gradient(700px 480px at 94% 2%, rgba(139,107,255,.14), transparent 60%),
    radial-gradient(560px 420px at 46% 118%, rgba(53,208,255,.08), transparent 66%),
    linear-gradient(180deg,var(--ink-950),var(--ink-900) 44%,var(--ink-950));
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.22}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid rgba(53,208,255,.45);outline-offset:2px;border-radius:8px}
.container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,22,.84);
  backdrop-filter:blur(16px) saturate(130%);
  border-bottom-color:var(--line);
}
.nav-row{display:flex;align-items:center;gap:20px;padding:16px 0 14px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(53,208,255,.22),rgba(139,107,255,.22));
  border:1px solid var(--line);flex-shrink:0;
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand-text span{color:var(--primary)}
.nav-search{
  display:flex;align-items:center;gap:8px;flex:0 1 44%;min-width:220px;
  background-color:rgba(10,16,36,.72);border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:5px 5px 5px 16px;transition:border-color .25s ease,box-shadow .25s ease;
}
.nav-search:focus-within{border-color:rgba(53,208,255,.55);box-shadow:0 0 24px -8px rgba(53,208,255,.65)}
.nav-search input{flex:1;min-width:0;background:transparent;border:0;color:var(--text-1);font-size:14px;padding:7px 0}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{outline:none}
.search-btn{
  border:0;border-radius:var(--radius-pill);padding:8px 18px;font-size:14px;font-weight:600;
  color:#04121A;background:var(--grad-primary);transition:filter .2s ease,transform .2s ease;
}
.search-btn:hover{filter:brightness(1.08);transform:translateY(-1px)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.menu-toggle{
  display:none;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;
  background-color:rgba(10,16,36,.7);border:1px solid var(--line);color:var(--text-2);
  transition:color .2s ease,border-color .2s ease;
}
.menu-toggle:hover{color:var(--primary);border-color:rgba(53,208,255,.45)}
.nav-chips{display:flex;align-items:center;gap:10px;padding:2px 0 14px;overflow-x:auto;scrollbar-width:none}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  padding:7px 16px;border-radius:var(--radius-pill);border:1px solid var(--line);
  color:var(--text-2);font-size:14px;white-space:nowrap;
  transition:color .22s ease,border-color .22s ease,background-color .22s ease;
}
.chip:hover{color:var(--text-1);border-color:rgba(53,208,255,.42);background-color:rgba(53,208,255,.07)}
.chip-active{color:#04121A;background:var(--grad-primary);border-color:transparent;font-weight:600}
.chip-active:hover{color:#04121A;background:var(--grad-primary)}

/* ---------- buttons ---------- */
.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);padding:13px 28px;font-size:15px;font-weight:600;
  transition:filter .22s ease,transform .22s ease,border-color .22s ease,color .22s ease,box-shadow .22s ease;
}
.btn-primary{
  color:#04121A;background:var(--grad-primary);border:1px solid transparent;
  box-shadow:0 0 26px -6px rgba(53,208,255,.6);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{
  color:var(--text-2);background-color:transparent;border:1px solid var(--line);
}
.btn-ghost:hover{color:var(--primary);border-color:rgba(53,208,255,.5)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:14px}
.link-more{color:var(--primary);font-size:14px;border-bottom:1px solid transparent;transition:border-color .2s ease,color .2s ease}
.link-more:hover{border-bottom-color:var(--primary)}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background-color:rgba(3,6,14,.7);backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:80;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(360px,86vw);z-index:90;
  background:linear-gradient(180deg,var(--ink-900),var(--ink-950));
  border-left:1px solid var(--line);padding:24px;overflow-y:auto;
  transform:translateX(102%);transition:transform .34s cubic-bezier(.4,0,.2,1);
}
.drawer.open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-search{
  display:flex;align-items:center;gap:8px;background-color:rgba(10,16,36,.75);
  border:1px solid var(--line);border-radius:var(--radius-pill);padding:5px 5px 5px 16px;
}
.drawer-search input{flex:1;min-width:0;background:transparent;border:0;color:var(--text-1);font-size:14px;padding:8px 0}
.drawer-search input::placeholder{color:var(--text-3)}
.drawer-search input:focus{outline:none}
.drawer-links{display:flex;flex-direction:column;gap:6px;margin-top:22px}
.drawer-links a{padding:12px 14px;border-radius:12px;color:var(--text-2);font-size:15px;border:1px solid transparent;transition:.22s}
.drawer-links a:hover{background-color:rgba(53,208,255,.07);color:var(--text-1)}
.drawer-links a.active{border-color:rgba(53,208,255,.42);color:var(--text-1);background-color:rgba(53,208,255,.09)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.3}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(5,7,15,.5),rgba(5,7,15,.88) 66%,var(--ink-950));
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.06fr .94fr;gap:48px;align-items:center;padding-top:64px;padding-bottom:92px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--primary);padding:6px 14px;border-radius:var(--radius-pill);
  background-color:rgba(53,208,255,.09);border:1px solid rgba(53,208,255,.28);
}
.hero h1{margin-top:22px;font-size:clamp(30px,4.4vw,52px);line-height:1.15}
.hero-sub{margin-top:20px;max-width:560px;color:var(--text-2);font-size:17px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.stat{
  flex:1 1 140px;padding:14px 18px;border-radius:14px;
  background-color:rgba(10,16,36,.6);border:1px solid var(--line);
}
.stat-num{display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:22px;font-weight:700;color:var(--primary);line-height:1.3}
.stat-label{font-size:13px;color:var(--text-3)}
.hero-visual{position:relative}
.hero-img{
  border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);aspect-ratio:16/11;background-color:var(--ink-800);
}
.hero-img img{width:100%;height:100%;object-fit:cover}
.float-card{
  position:absolute;left:-16px;bottom:-26px;width:min(268px,80%);
  padding:16px 18px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(28,40,80,.9),rgba(10,16,36,.74));
  backdrop-filter:blur(14px) saturate(120%);box-shadow:var(--shadow-card);
}
.float-card .fc-title{font-size:14px;font-weight:600;color:var(--text-1)}
.float-card .fc-text{margin-top:6px;font-size:13px;line-height:1.7;color:var(--text-3)}

/* ---------- sections ---------- */
.section{padding:104px 0}
.section-tight{padding:84px 0}
.section-head{max-width:720px;margin-bottom:46px}
.section-head h2{font-size:clamp(24px,3vw,34px)}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);border:0;margin:0}

/* ---------- check cards ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.check-card{
  padding:26px 26px 28px;border-radius:var(--radius);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  background:linear-gradient(160deg,rgba(28,40,80,.55),rgba(10,16,36,.35));
  backdrop-filter:blur(14px) saturate(120%);
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.check-grid > .check-card:nth-child(even){margin-top:34px}
.check-card:hover{
  border-color:rgba(53,208,255,.42);transform:translateY(-3px);
  box-shadow:0 0 28px -8px rgba(53,208,255,.5),var(--shadow-card);
}
.check-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.check-icon{
  width:42px;height:42px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background-color:rgba(53,208,255,.1);border:1px solid rgba(53,208,255,.26);color:var(--primary);flex-shrink:0;
}
.check-card h3{font-size:19px}
.check-card p{color:var(--text-2);font-size:15px;margin-top:10px}
.check-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.check-list li{position:relative;padding-left:18px;font-size:14px;color:var(--text-3);line-height:1.75}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background-color:var(--primary);opacity:.75;
}

/* ---------- flow ---------- */
.flow{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.flow::before{
  content:"";position:absolute;top:32px;left:6%;right:6%;height:1px;
  background:linear-gradient(90deg,rgba(53,208,255,.06),rgba(53,208,255,.4),rgba(139,107,255,.3),rgba(53,208,255,.06));
}
.flow-step{position:relative;padding-top:0}
.flow-num{
  display:block;font-family:var(--mono);font-size:44px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(53,208,255,.6);
}
.flow-dot{
  position:absolute;top:26px;left:0;width:13px;height:13px;border-radius:50%;
  background-color:var(--ink-950);border:2px solid var(--primary);box-shadow:0 0 14px -2px rgba(53,208,255,.85);
}
.flow-step h3{margin-top:22px;font-size:19px}
.flow-step p{margin-top:10px;color:var(--text-2);font-size:15px}
.flow-step .flow-hint{margin-top:12px;font-size:13px;color:var(--text-3)}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:.82fr 1.18fr;gap:52px;align-items:start}
.faq-aside h2{font-size:clamp(24px,3vw,34px)}
.faq-aside p{margin-top:14px;color:var(--text-2);font-size:15px}
.faq-aside .aside-card{
  margin-top:26px;padding:20px;border-radius:var(--radius);border:1px solid var(--line);
  background-color:rgba(10,16,36,.55);
}
.faq-aside .aside-card strong{display:block;font-size:15px;color:var(--text-1)}
.faq-aside .aside-card span{display:block;margin-top:6px;font-size:13px;color:var(--text-3)}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  border:1px solid var(--line);border-radius:14px;overflow:hidden;
  background:linear-gradient(160deg,rgba(28,40,80,.5),rgba(10,16,36,.3));
  transition:border-color .25s ease,background-color .25s ease;
}
.faq-item.open{border-color:rgba(53,208,255,.45)}
.faq-q{
  width:100%;min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:16px 20px;background:transparent;border:0;text-align:left;
  color:var(--text-1);font-size:16px;font-weight:600;line-height:1.6;position:relative;
}
.faq-item.open .faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;background-color:var(--primary);
}
.faq-q:hover{color:var(--primary-light)}
.faq-arrow{flex-shrink:0;color:var(--text-3);transition:transform .3s ease,color .3s ease}
.faq-item.open .faq-arrow{transform:rotate(180deg);color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .36s ease}
.faq-a-inner{padding:0 20px 20px;color:var(--text-2);font-size:15px}

/* ---------- form ---------- */
.form-card{
  padding:34px;border-radius:var(--radius-lg);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(28,40,80,.58),rgba(10,16,36,.42));
  backdrop-filter:blur(14px) saturate(120%);box-shadow:var(--shadow-card);
}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.field{display:flex;flex-direction:column;gap:9px}
.field-full{grid-column:1/-1}
.field label{font-size:13px;color:var(--text-2);letter-spacing:.01em}
.field input,.field select,.field textarea{
  width:100%;background-color:rgba(8,13,30,.72);border:1px solid var(--line);border-radius:12px;
  padding:13px 15px;color:var(--text-1);font-size:15px;font-family:inherit;line-height:1.6;
  transition:border-color .22s ease,box-shadow .22s ease,background-color .22s ease;
}
.field textarea{min-height:132px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(53,208,255,.18);background-color:rgba(10,16,36,.9);
}
.field select{
  appearance:none;padding-right:42px;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7A9E' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 15px center;
}
.field select option{background-color:var(--ink-900);color:var(--text-1)}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:26px}
.form-note{font-size:13px;color:var(--text-3);line-height:1.7}
.form-alert{
  margin-bottom:22px;padding:14px 18px;border-radius:12px;font-size:14px;
  color:var(--primary-light);border:1px solid rgba(53,208,255,.4);background-color:rgba(53,208,255,.09);
}
.form-side{margin-top:26px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9;background-color:var(--ink-800)}
.form-side img{width:100%;height:100%;object-fit:cover}

/* ---------- metric strip ---------- */
.metric-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric{
  padding:24px 22px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(28,40,80,.5),rgba(10,16,36,.3));
  transition:border-color .25s ease,transform .25s ease;
}
.metric:hover{border-color:rgba(139,107,255,.45);transform:translateY(-3px)}
.metric .m-label{font-size:13px;color:var(--text-3)}
.metric .m-value{
  display:block;margin-top:10px;font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:24px;font-weight:700;color:var(--text-1);
}
.metric .m-desc{margin-top:8px;font-size:13px;color:var(--text-3);line-height:1.7}
.metric .m-value.accent{color:var(--reward)}

/* ---------- cta band ---------- */
.cta-band{
  padding:46px 32px;border-radius:24px;text-align:center;border:1px solid var(--line);
  background:
    radial-gradient(620px 220px at 50% 0%, rgba(53,208,255,.18), transparent 72%),
    linear-gradient(160deg,rgba(28,40,80,.6),rgba(10,16,36,.46));
  backdrop-filter:blur(14px) saturate(120%);
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px)}
.cta-band p{margin:14px auto 0;max-width:620px;color:var(--text-2);font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;margin-top:26px}

/* ---------- footer ---------- */
.site-footer{
  margin-top:24px;border-top:1px solid var(--line);background-color:rgba(5,7,15,.72);padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-desc{color:var(--text-3);font-size:14px;max-width:330px}
.footer-title{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px;font-size:14px;color:var(--text-3)}
.footer-links a{transition:color .2s ease}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:46px;padding-top:22px;border-top:1px solid var(--line);
  color:var(--text-3);font-size:13px;
}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .menu-toggle{display:inline-flex}
  .nav-row{flex-wrap:wrap;gap:14px}
  .nav-search{order:3;flex:1 1 100%;min-width:0;margin-top:2px}
  .nav-actions{margin-left:auto}
  .hero-inner{grid-template-columns:1fr;gap:44px;padding-top:52px;padding-bottom:72px}
  .hero-visual{order:2}
  .float-card{position:static;width:100%;margin-top:16px}
  .check-grid{grid-template-columns:1fr}
  .check-grid > .check-card:nth-child(even){margin-top:0}
  .flow{grid-template-columns:1fr;gap:30px}
  .flow::before{display:none}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .metric-strip{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .section{padding:64px 0}
  .section-tight{padding:56px 0}
  .container{padding-left:16px;padding-right:16px}
  .brand-text{font-size:17px}
  .hero h1{font-size:clamp(28px,7vw,38px)}
  .hero-sub{font-size:16px}
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:24px}
  .cta-band{padding:34px 20px}
  .btn-primary,.btn-ghost{width:100%}
  .hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%}
  .metric-strip{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .stat{flex:1 1 100%}
  .flow-num{font-size:36px}
}

/* roulang page: category4 */
:root{
    --ink-950:#05070F;
    --ink-900:#0A0F1F;
    --ink-800:#121A32;
    --ink-700:#1B2544;
    --primary:#35D0FF;
    --primary-light:#6FE2FF;
    --primary-dark:#1F9CC7;
    --violet:#8B6BFF;
    --reward:#FFC24B;
    --text-1:#E9F0FF;
    --text-2:#A6B4D6;
    --text-3:#6B7A9E;
    --line:rgba(130,165,255,.14);
    --line-strong:rgba(130,165,255,.26);
    --radius-sm:12px;
    --radius:16px;
    --radius-lg:20px;
    --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
    --shadow-glow:0 0 24px -6px rgba(53,208,255,.55);
    --glass:linear-gradient(160deg, rgba(28,40,80,.55), rgba(10,16,36,.35));
    --font-mono:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  }

  *,*::before,*::after{box-sizing:border-box}

  html{scroll-behavior:smooth; -webkit-text-size-adjust:100%}

  body{
    margin:0;
    font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--text-1);
    background:
      radial-gradient(900px 520px at 12% -6%, rgba(53,208,255,.13), transparent 62%),
      radial-gradient(760px 480px at 92% 6%, rgba(139,107,255,.13), transparent 60%),
      radial-gradient(680px 520px at 50% 108%, rgba(53,208,255,.07), transparent 65%),
      linear-gradient(180deg,#05070F 0%, #0A0F1F 58%, #070B16 100%);
    background-attachment:fixed;
    overflow-x:hidden;
  }

  img{max-width:100%;display:block;height:auto}
  a{color:var(--primary);text-decoration:none;transition:color .25s ease, border-color .25s ease, background-color .25s ease, opacity .25s ease}
  a:hover{color:var(--primary-light)}
  button{font-family:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  :focus-visible{outline:2px solid rgba(53,208,255,.45);outline-offset:2px;border-radius:6px}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

  /* ============ 导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:linear-gradient(180deg, rgba(5,7,15,.92), rgba(5,7,15,.62));
    border-bottom:1px solid transparent;
    backdrop-filter:blur(14px) saturate(120%);
    -webkit-backdrop-filter:blur(14px) saturate(120%);
    transition:background .3s ease, border-color .3s ease;
  }
  .site-header.is-scrolled{
    background:rgba(6,9,20,.94);
    border-bottom-color:var(--line);
  }
  .nav-row{display:flex;align-items:center;gap:22px;padding:14px 0}
  .brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);text-decoration:none;flex-shrink:0}
  .brand:hover{color:var(--text-1)}
  .brand-mark{
    width:36px;height:36px;border-radius:12px;display:grid;place-items:center;
    background:linear-gradient(150deg, rgba(53,208,255,.2), rgba(139,107,255,.16));
    border:1px solid var(--line-strong);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
  }
  .brand-text{font-size:17px;font-weight:700;letter-spacing:.005em;white-space:nowrap}
  .brand-text span{color:var(--primary)}

  .nav-search{
    flex:1 1 auto;max-width:520px;min-width:0;
    display:flex;align-items:center;gap:10px;
    background:rgba(12,18,38,.72);
    border:1px solid var(--line);
    border-radius:999px;
    padding:5px 5px 5px 16px;
    transition:border-color .25s ease, box-shadow .25s ease, background-color .25s ease;
  }
  .nav-search:focus-within{
    border-color:rgba(53,208,255,.5);
    box-shadow:0 0 0 3px rgba(53,208,255,.12);
    background:rgba(12,18,38,.9);
  }
  .nav-search input{
    flex:1 1 auto;min-width:0;background:transparent;border:0;outline:0;
    color:var(--text-1);font-size:14px;line-height:1.6;padding:8px 0;
  }
  .nav-search input::placeholder{color:var(--text-3)}
  .search-btn{
    border:0;cursor:pointer;border-radius:999px;padding:8px 18px;font-size:13.5px;font-weight:600;
    color:#04121C;background:linear-gradient(100deg,#35D0FF,#8B6BFF);
    box-shadow:var(--shadow-glow);
    transition:filter .25s ease, transform .2s ease;
    white-space:nowrap;
  }
  .search-btn:hover{filter:brightness(1.08)}
  .search-btn:active{transform:translateY(1px)}

  .nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex-shrink:0}

  .btn-primary,.btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:999px;font-size:14px;font-weight:600;line-height:1;
    padding:12px 22px;cursor:pointer;text-decoration:none;border:1px solid transparent;
    transition:filter .25s ease, transform .2s ease, border-color .25s ease, background-color .25s ease, color .25s ease, box-shadow .25s ease;
    white-space:nowrap;
  }
  .btn-primary{
    color:#04121C;background:linear-gradient(100deg,#35D0FF,#8B6BFF);
    box-shadow:var(--shadow-glow);
  }
  .btn-primary:hover{filter:brightness(1.08);color:#04121C;transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(1px);box-shadow:none}
  .btn-ghost{
    color:var(--text-2);background:rgba(255,255,255,.02);border-color:var(--line);
  }
  .btn-ghost:hover{color:var(--primary);border-color:rgba(53,208,255,.5);background:rgba(53,208,255,.07)}
  .btn-sm{padding:9px 16px;font-size:13.5px}

  .menu-toggle{
    display:none;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:12px;cursor:pointer;
    color:var(--text-1);background:rgba(255,255,255,.03);border:1px solid var(--line);
    transition:border-color .25s ease, color .25s ease;
  }
  .menu-toggle:hover{border-color:rgba(53,208,255,.5);color:var(--primary)}

  .nav-chips{
    display:flex;gap:8px;padding:0 0 14px;
    overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  }
  .nav-chips::-webkit-scrollbar{display:none}
  .chip{
    display:inline-block;white-space:nowrap;
    padding:7px 15px;border-radius:999px;font-size:13.5px;
    color:var(--text-2);background:rgba(255,255,255,.02);
    border:1px solid var(--line);
    transition:color .25s ease, border-color .25s ease, background-color .25s ease;
  }
  .chip:hover{color:var(--text-1);border-color:rgba(53,208,255,.42);background:rgba(53,208,255,.06)}
  .chip-active{
    color:var(--primary);border-color:rgba(53,208,255,.55);
    background:rgba(53,208,255,.1);
  }

  /* ============ 抽屉 ============ */
  .drawer-mask{
    position:fixed;inset:0;z-index:80;background:rgba(3,5,12,.72);
    opacity:0;pointer-events:none;transition:opacity .3s ease;
  }
  .drawer-mask.show{opacity:1;pointer-events:auto}
  .drawer{
    position:fixed;top:0;right:0;z-index:90;height:100%;
    width:min(88vw,368px);padding:20px 20px 32px;overflow-y:auto;
    background:linear-gradient(180deg, rgba(11,16,32,.99), rgba(7,10,22,.99));
    border-left:1px solid var(--line);
    transform:translateX(103%);
    transition:transform .36s cubic-bezier(.22,.8,.28,1);
  }
  .drawer.open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
  .drawer-close{
    width:36px;height:36px;border-radius:10px;cursor:pointer;font-size:20px;line-height:1;
    color:var(--text-2);background:rgba(255,255,255,.03);border:1px solid var(--line);
  }
  .drawer-close:hover{color:var(--primary);border-color:rgba(53,208,255,.5)}
  .drawer-search{max-width:none;margin-bottom:18px}
  .drawer-links{display:flex;flex-direction:column;gap:4px;border-top:1px solid var(--line);padding-top:16px}
  .drawer-links a{
    padding:12px 6px;border-radius:10px;color:var(--text-2);font-size:15px;
    border-bottom:1px solid rgba(130,165,255,.07);
  }
  .drawer-links a:hover{color:var(--primary);background:rgba(53,208,255,.05)}
  .drawer-links a.is-active{color:var(--primary)}

  /* ============ 通用板块 ============ */
  .section{padding:88px 0}
  .section-tight{padding:64px 0}
  .section-head{max-width:780px;margin-bottom:44px}
  .section-head.center{margin-left:auto;margin-right:auto;text-align:center}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12.5px;letter-spacing:.06em;color:var(--primary);
    border:1px solid rgba(53,208,255,.28);background:rgba(53,208,255,.07);
    border-radius:999px;padding:5px 13px;margin-bottom:16px;
  }
  .eyebrow.violet{color:#B9A6FF;border-color:rgba(139,107,255,.32);background:rgba(139,107,255,.1)}
  .h2{font-size:clamp(23px,2.6vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
  .section-sub{margin-top:14px;color:var(--text-2);font-size:15.5px;line-height:1.85}

  .card{
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--radius);
    box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.06);
    backdrop-filter:blur(14px) saturate(120%);
    -webkit-backdrop-filter:blur(14px) saturate(120%);
    transition:border-color .3s ease, transform .3s ease, box-shadow .3s ease;
  }
  .card:hover{
    border-color:rgba(53,208,255,.4);
    transform:translateY(-3px);
    box-shadow:0 22px 46px -26px rgba(0,0,0,.95), 0 0 28px -8px rgba(53,208,255,.5);
  }

  .num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

  /* ============ Hero ============ */
  .hero{position:relative;padding:66px 0 78px;overflow:hidden}
  .hero-grid{display:grid;grid-template-columns:1.03fr .97fr;gap:52px;align-items:center}
  .hero h1{
    font-size:clamp(30px,4.4vw,50px);line-height:1.16;font-weight:700;letter-spacing:-.02em;
  }
  .hero h1 em{font-style:normal;color:var(--primary)}
  .hero-sub{margin-top:20px;color:var(--text-2);font-size:16.5px;line-height:1.9;max-width:560px}
  .hero-cta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:32px}
  .link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--text-2);font-size:14.5px;font-weight:600}
  .link-arrow:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px}

  .stat-pills{display:flex;flex-wrap:wrap;gap:12px;margin-top:38px}
  .stat-pill{
    flex:1 1 140px;min-width:140px;
    padding:14px 16px;border-radius:var(--radius-sm);
    background:rgba(12,18,38,.6);border:1px solid var(--line);
  }
  .stat-pill .k{font-size:12.5px;color:var(--text-3)}
  .stat-pill .v{
    margin-top:4px;font-size:22px;font-weight:700;color:var(--primary);
    font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  }
  .stat-pill .v small{font-size:12.5px;font-weight:500;color:var(--text-2);margin-left:3px}

  .hero-visual{position:relative}
  .hero-media{
    border-radius:var(--radius-lg);overflow:hidden;
    border:1px solid var(--line-strong);
    box-shadow:0 32px 60px -34px rgba(0,0,0,.95);
    aspect-ratio:16 / 11;
  }
  .hero-media img{width:100%;height:100%;object-fit:cover}
  .hero-media::after{
    content:"";position:absolute;inset:0;border-radius:var(--radius-lg);
    background:linear-gradient(180deg, rgba(5,7,15,.08) 40%, rgba(5,7,15,.72));
    pointer-events:none;
  }
  .hero-float{
    position:absolute;left:-18px;bottom:-26px;width:min(280px,76%);
    padding:18px 20px;border-radius:var(--radius);
    background:linear-gradient(160deg, rgba(20,30,62,.95), rgba(9,14,30,.92));
    border:1px solid var(--line-strong);
    box-shadow:0 22px 44px -26px rgba(0,0,0,.95);
    backdrop-filter:blur(12px);
  }
  .hero-float:hover{transform:none;border-color:var(--line-strong);box-shadow:0 22px 44px -26px rgba(0,0,0,.95)}
  .float-head{font-size:12.5px;color:var(--text-3)}
  .float-num{
    margin:6px 0 12px;font-size:32px;font-weight:700;line-height:1;color:var(--reward);
    font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  }
  .float-num span{font-size:15px;margin-left:2px}
  .float-foot{margin-top:10px;font-size:12.5px;color:var(--text-2)}

  /* ============ 进度条 ============ */
  .bar-track{
    height:8px;border-radius:999px;overflow:hidden;
    background:rgba(130,165,255,.12);
    border:1px solid rgba(130,165,255,.1);
  }
  .bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#35D0FF,#8B6BFF)}
  .bar-fill.gold{background:linear-gradient(90deg,#FFC24B,#FF9F3D)}
  .bar-row{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--text-2)}
  .bar-row .num{color:var(--reward);font-weight:700}

  /* ============ 等级卡 ============ */
  .tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
  .tier-card{padding:26px 24px 24px;border-radius:var(--radius-lg);position:relative;overflow:hidden}
  .tier-card:nth-child(2){margin-top:30px}
  .tier-card:nth-child(3){margin-top:60px}
  .tier-badge{
    display:inline-flex;align-items:center;gap:7px;
    padding:5px 13px;border-radius:999px;font-size:12.5px;font-weight:700;
    color:#3A2500;background:linear-gradient(100deg,#FFD479,#FFB02E);
    box-shadow:0 0 20px -8px rgba(255,194,75,.9);
  }
  .tier-name{margin-top:16px;font-size:21px;font-weight:700;letter-spacing:-.01em}
  .tier-desc{margin-top:8px;font-size:13.8px;color:var(--text-2);line-height:1.8}
  .tier-list{margin-top:20px;display:flex;flex-direction:column;gap:11px}
  .tier-list li{display:flex;gap:10px;font-size:14.2px;color:var(--text-2);line-height:1.7}
  .tier-list li strong{color:var(--text-1);font-weight:600}
  .tick{
    flex-shrink:0;width:18px;height:18px;margin-top:4px;border-radius:6px;
    display:grid;place-items:center;
    border:1px solid rgba(53,208,255,.4);background:rgba(53,208,255,.1);
  }
  .tier-progress{margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}
  .tier-progress .label{font-size:12.5px;color:var(--text-3);margin-bottom:10px;display:flex;justify-content:space-between}

  /* ============ 权益明细 ============ */
  .detail-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
  .detail-item{
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:16px 20px;min-height:60px;
    background:rgba(12,18,38,.5);border:1px solid var(--line);border-radius:var(--radius-sm);
    transition:border-color .25s ease, background-color .25s ease, transform .25s ease;
  }
  .detail-item:hover{border-color:rgba(53,208,255,.4);background:rgba(15,24,48,.7);transform:translateY(-2px)}
  .detail-item .name{font-size:14.8px;color:var(--text-1)}
  .detail-item .name small{display:block;font-size:12.5px;color:var(--text-3);margin-top:3px;font-weight:400}
  .detail-item .val{
    font-family:var(--font-mono);font-variant-numeric:tabular-nums;
    font-size:16px;font-weight:700;color:var(--reward);white-space:nowrap;
  }

  .metric-strip{
    display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
    background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
    margin-top:26px;
  }
  .metric-cell{background:rgba(9,14,30,.86);padding:20px 18px}
  .metric-cell .mk{font-size:12.5px;color:var(--text-3)}
  .metric-cell .mv{
    margin-top:6px;font-size:19px;font-weight:700;color:var(--text-1);
    font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  }

  /* ============ 流程 ============ */
  .step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative}
  .step-grid::before{
    content:"";position:absolute;top:34px;left:8%;right:8%;height:1px;
    background:linear-gradient(90deg, rgba(53,208,255,.35), rgba(139,107,255,.3), rgba(53,208,255,.05));
    opacity:.7;
  }
  .step{position:relative;padding-top:10px}
  .step-no{
    width:52px;height:52px;border-radius:16px;display:grid;place-items:center;
    font-family:var(--font-mono);font-variant-numeric:tabular-nums;
    font-size:19px;font-weight:700;color:var(--primary);
    background:rgba(10,16,36,.94);border:1px solid rgba(53,208,255,.32);
    box-shadow:0 0 22px -10px rgba(53,208,255,.7);
    position:relative;z-index:1;
  }
  .step h3{margin-top:18px;font-size:17px;font-weight:700}
  .step p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.8}

  /* ============ 说明卡区 ============ */
  .split{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:start}
  .panel{padding:28px 26px;border-radius:var(--radius-lg)}
  .panel h3{font-size:19px;font-weight:700}
  .panel p{margin-top:12px;font-size:14.6px;color:var(--text-2);line-height:1.9}
  .bullet{margin-top:18px;display:flex;flex-direction:column;gap:12px}
  .bullet li{display:flex;gap:12px;font-size:14.4px;color:var(--text-2);line-height:1.75}
  .bullet li .dot{
    flex-shrink:0;width:8px;height:8px;margin-top:10px;border-radius:999px;
    background:linear-gradient(120deg,#35D0FF,#8B6BFF);
    box-shadow:0 0 12px -2px rgba(53,208,255,.9);
  }

  /* ============ FAQ ============ */
  .faq-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:40px;align-items:start}
  .faq-list{display:flex;flex-direction:column;gap:12px}
  .faq-item{
    position:relative;border:1px solid var(--line);border-radius:var(--radius);
    background:rgba(12,18,38,.46);
    transition:border-color .3s ease, background-color .3s ease;
    overflow:hidden;
  }
  .faq-item::before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
    background:var(--primary);opacity:0;transition:opacity .3s ease;
  }
  .faq-item.open{border-color:rgba(53,208,255,.4);background:rgba(15,24,48,.72)}
  .faq-item.open::before{opacity:1}
  .faq-q{
    width:100%;min-height:58px;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:16px 20px 16px 22px;text-align:left;cursor:pointer;
    background:transparent;border:0;color:var(--text-1);font-size:15.4px;font-weight:600;line-height:1.6;
  }
  .faq-q:hover{color:var(--primary)}
  .faq-arrow{flex-shrink:0;transition:transform .3s ease;color:var(--text-3)}
  .faq-item.open .faq-arrow{transform:rotate(180deg);color:var(--primary)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .36s ease}
  .faq-a-inner{padding:0 22px 20px;font-size:14.4px;color:var(--text-2);line-height:1.9}

  /* ============ CTA 横幅 ============ */
  .cta-band{
    margin:0 auto;max-width:1000px;padding:44px 32px;text-align:center;
    border-radius:var(--radius-lg);
    background:
      radial-gradient(520px 220px at 50% 0%, rgba(53,208,255,.16), transparent 70%),
      linear-gradient(160deg, rgba(22,32,66,.8), rgba(8,12,26,.72));
    border:1px solid var(--line-strong);
    box-shadow:0 28px 60px -34px rgba(0,0,0,.95);
  }
  .cta-band h2{font-size:clamp(21px,2.4vw,28px);font-weight:700}
  .cta-band p{margin-top:12px;color:var(--text-2);font-size:15px}
  .cta-actions{margin-top:26px;display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
  .cta-note{margin-top:18px;font-size:12.5px;color:var(--text-3)}
  .btn-pulse{animation:breathe 3.2s ease-in-out infinite}
  @keyframes breathe{
    0%,100%{box-shadow:0 0 22px -8px rgba(53,208,255,.55)}
    50%{box-shadow:0 0 34px -4px rgba(53,208,255,.85)}
  }

  /* ============ 页脚 ============ */
  .site-footer{
    margin-top:96px;border-top:1px solid var(--line);
    background:linear-gradient(180deg, rgba(7,11,24,.5), rgba(5,7,15,.92));
    padding:60px 0 26px;
  }
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}
  .footer-brand{display:inline-flex;align-items:center;gap:10px}
  .footer-desc{margin-top:16px;font-size:13.8px;color:var(--text-2);line-height:1.85;max-width:330px}
  .footer-title{font-size:14.5px;font-weight:700;margin-bottom:16px}
  .footer-links{display:flex;flex-direction:column;gap:11px;font-size:13.8px;color:var(--text-2)}
  .footer-links a{color:var(--text-2)}
  .footer-links a:hover{color:var(--primary)}
  .footer-bottom{
    margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
    display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:12.8px;color:var(--text-3);
  }

  /* ============ 响应式 ============ */
  @media (max-width:1279px){
    .hero-grid{gap:40px}
  }
  @media (max-width:1023px){
    .desktop-only{display:none}
    .menu-toggle{display:inline-flex}
    .nav-help{display:none}
    .nav-row{gap:14px}
    .hero{padding:48px 0 64px}
    .hero-grid{grid-template-columns:1fr;gap:44px}
    .hero-visual{order:2}
    .hero-float{position:static;width:100%;margin-top:16px;left:auto;bottom:auto}
    .hero-media::after{border-radius:var(--radius-lg)}
    .section{padding:66px 0}
    .tier-grid{grid-template-columns:1fr 1fr}
    .tier-card:nth-child(3){margin-top:0}
    .step-grid{grid-template-columns:1fr 1fr;gap:28px}
    .step-grid::before{display:none}
    .split{grid-template-columns:1fr}
    .faq-layout{grid-template-columns:1fr;gap:26px}
    .metric-strip{grid-template-columns:1fr 1fr}
    .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  }
  @media (max-width:767px){
    .container{padding:0 16px}
    .section{padding:56px 0}
    .section-head{margin-bottom:32px}
    .nav-enter{display:none}
    .stat-pill{flex:1 1 100%;min-width:0}
    .tier-grid{grid-template-columns:1fr}
    .tier-card:nth-child(2),.tier-card:nth-child(3){margin-top:0}
    .detail-grid{grid-template-columns:1fr}
    .step-grid{grid-template-columns:1fr}
    .cta-band{padding:34px 20px}
    .cta-actions .btn-primary,.cta-actions .btn-ghost{width:100%}
    .footer-grid{grid-template-columns:1fr}
    .footer-bottom{flex-direction:column;gap:8px}
  }
  @media (max-width:520px){
    .hero h1{font-size:28px}
    .hero-sub{font-size:15.4px}
    .hero-cta{gap:12px}
    .hero-cta .btn-primary{width:100%}
    .metric-strip{grid-template-columns:1fr}
    .faq-q{font-size:14.6px;padding:14px 16px 14px 18px}
    .faq-a-inner{padding:0 18px 18px}
    .brand-text{font-size:15.5px}
  }

  @media (prefers-reduced-motion:reduce){
    *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
    html{scroll-behavior:auto}
  }

  .reveal{opacity:0;transform:translateY(12px)}
  .reveal.in{opacity:1;transform:none;transition:opacity .4s ease, transform .4s ease}