/* roulang page: index */
:root{
  --bg-0:#070C18;
  --bg-1:#0B1424;
  --bg-2:#101C30;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --c-primary:#2FE0C4;
  --c-primary-soft:rgba(47,224,196,.12);
  --c-accent:#FF7A4D;
  --c-tag:#A78BFA;
  --t-1:#E8EEF7;
  --t-2:#9BAABF;
  --t-3:#6C7A90;
  --radius-card:16px;
  --radius-img:12px;
  --radius-glass:18px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.06),0 18px 40px -16px rgba(0,0,0,.7);
  --glow:0 0 24px rgba(47,224,196,.35);
  --ease:200ms cubic-bezier(.2,.7,.3,1);
  --mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input{font:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(47,224,196,.28);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section-head{margin-bottom:40px;max-width:760px}
.section-head h2{
  font-size:32px;font-weight:700;line-height:1.3;letter-spacing:-.01em;
  display:flex;align-items:center;gap:12px;
}
.section-head h2::before{
  content:"";width:3px;height:26px;border-radius:2px;background:var(--c-primary);display:inline-block;
}
.section-head p{margin-top:12px;font-size:14px;color:var(--t-2);line-height:1.9}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;max-width:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;padding:0 22px;height:46px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform var(--ease),background var(--ease),box-shadow var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn--primary{
  background:linear-gradient(135deg,#2FE0C4 0%,#5BF0D6 100%);
  color:#062018;box-shadow:0 10px 26px -14px rgba(47,224,196,.9);
}
.btn--primary:hover{transform:translateY(-1px);box-shadow:var(--glow);filter:brightness(1.04)}
.btn--primary:active{transform:translateY(0);box-shadow:0 6px 16px -12px rgba(47,224,196,.8)}
.btn--ghost{
  background:transparent;border:1px solid var(--line-strong);color:var(--t-1);
}
.btn--ghost:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px)}
.btn--accent{
  background:linear-gradient(135deg,#FF7A4D 0%,#FF9A73 100%);
  color:#2A0F06;box-shadow:0 10px 26px -14px rgba(255,122,77,.85);
}
.btn--accent:hover{transform:translateY(-1px);box-shadow:0 0 26px rgba(255,122,77,.4)}
.btn--sm{height:38px;padding:0 16px;font-size:13px}
.btn--block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;box-shadow:none}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-primary);
  transition:color var(--ease);
}
.link-more span{transition:transform var(--ease);display:inline-block}
.link-more:hover span{transform:translateX(3px)}
.link-more:hover{color:#7FF3DF}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;
  font-size:12px;line-height:1.6;font-weight:600;letter-spacing:.02em;
}
.badge--tag{background:rgba(167,139,250,.16);color:#C7B6FF}
.badge--accent{background:rgba(255,122,77,.16);color:#FFAE8D}
.badge--primary{background:rgba(47,224,196,.14);color:#7FF3DF}
.badge--outline{background:transparent;border:1px solid var(--line-strong);color:var(--t-2)}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,12,24,.82);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:74px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand__mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(140deg,#2FE0C4,#1B7C8C 60%,#101C30);
  display:grid;place-items:center;
  font-size:14px;font-weight:800;color:#051E1A;letter-spacing:-.02em;
  box-shadow:0 0 0 1px rgba(255,255,255,.1),0 8px 20px -10px rgba(47,224,196,.7);
}
.brand__text{display:flex;flex-direction:column;line-height:1.2}
.brand__name{font-size:17px;font-weight:800;letter-spacing:.01em}
.brand__sub{font-size:11px;color:var(--t-3);letter-spacing:.14em;margin-top:3px}
.topbar__tools{display:flex;align-items:center;gap:14px}
.searchbox{
  display:flex;align-items:center;gap:8px;
  background:var(--bg-1);border:1px solid var(--line);
  border-radius:999px;padding:0 6px 0 16px;height:42px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.searchbox:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(47,224,196,.12)}
.searchbox input{
  width:180px;background:transparent;border:0;color:var(--t-1);font-size:14px;outline:none;
}
.searchbox input::placeholder{color:var(--t-3)}
.searchbox .btn{height:32px;padding:0 14px;font-size:13px}
.toplink{font-size:14px;color:var(--t-2);transition:color var(--ease)}
.toplink:hover{color:var(--t-1)}
.topbar .btn--line{
  border:1px solid var(--c-primary);color:var(--c-primary);background:transparent;height:40px;padding:0 18px;font-size:14px;
}
.topbar .btn--line:hover{background:var(--c-primary-soft);box-shadow:var(--glow)}

.channel-bar{border-top:1px solid var(--line);background:rgba(11,20,36,.5)}
.channel-list{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none}
.channel-list::-webkit-scrollbar{display:none}
.channel-list a{
  position:relative;display:inline-flex;align-items:center;
  padding:12px 14px;font-size:14px;color:var(--t-2);
  transition:color var(--ease);white-space:nowrap;
}
.channel-list a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.channel-list a:hover{color:var(--t-1)}
.channel-list a.is-active{color:var(--t-1);font-weight:600}
.channel-list a.is-active::after{transform:scaleX(1)}
.hamburger{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-strong);align-items:center;justify-content:center;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--t-1);border-radius:2px;position:relative}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t-1);border-radius:2px;
}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;display:none;
  background:rgba(3,7,15,.72);
  backdrop-filter:blur(2px);
}
.drawer.is-open{display:block}
.drawer__panel{
  position:absolute;top:0;right:0;width:min(340px,86vw);height:100%;
  background:var(--bg-1);border-left:1px solid var(--line);
  padding:20px;display:flex;flex-direction:column;gap:18px;
  animation:drawerIn 240ms cubic-bezier(.2,.7,.3,1);
}
@keyframes drawerIn{from{transform:translateX(24px);opacity:.4}to{transform:translateX(0);opacity:1}}
.drawer__head{display:flex;align-items:center;justify-content:space-between}
.drawer__close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line-strong);
  font-size:20px;line-height:1;color:var(--t-2);
}
.drawer__search{display:flex;gap:8px}
.drawer__search input{
  flex:1;height:42px;border-radius:12px;border:1px solid var(--line);
  background:var(--bg-0);color:var(--t-1);padding:0 14px;font-size:14px;outline:none;
}
.drawer__search input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(47,224,196,.12)}
.drawer__nav{display:flex;flex-direction:column;gap:4px;margin-top:6px}
.drawer__nav a{
  padding:13px 14px;border-radius:12px;font-size:15px;color:var(--t-2);
  border:1px solid transparent;transition:all var(--ease);
}
.drawer__nav a:hover{background:var(--bg-2);color:var(--t-1)}
.drawer__nav a.is-active{background:var(--c-primary-soft);color:var(--c-primary);border-color:rgba(47,224,196,.3);font-weight:600}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:72px 0 88px;background:radial-gradient(1100px 520px at 12% -10%,rgba(47,224,196,.12),transparent 62%),radial-gradient(760px 420px at 92% 8%,rgba(167,139,250,.10),transparent 60%)}
.hero__grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero__eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:20px}
.hero h1{
  font-size:46px;font-weight:800;line-height:1.25;letter-spacing:-.015em;
}
.hero h1 em{font-style:normal;color:var(--c-primary)}
.hero__sub{
  margin-top:18px;font-size:17px;color:var(--t-2);line-height:1.85;max-width:520px;
}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero__facts{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line);
}
.fact{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--t-2);
  padding:7px 13px;border-radius:999px;background:var(--bg-1);border:1px solid var(--line);
}
.fact i{width:6px;height:6px;border-radius:50%;background:var(--c-primary);display:inline-block}

.hero__figure{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--shadow-card)}
.hero__figure img{width:100%;height:400px;object-fit:cover;border-radius:20px}
.hero__figure::after{
  content:"";position:absolute;inset:0;border-radius:20px;
  background:linear-gradient(120deg,rgba(7,12,24,.92) 0%,rgba(7,12,24,.5) 46%,rgba(7,12,24,.18) 100%);
}
.hero__gridlines{
  position:absolute;left:0;right:0;bottom:0;height:88px;border-radius:0 0 20px 20px;opacity:.08;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:26px 26px;
}
.glass-badge{
  position:absolute;right:18px;bottom:18px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;font-size:12.5px;color:var(--t-1);
  background:rgba(255,255,255,.045);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid rgba(255,255,255,.08);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 0 4px rgba(47,224,196,.16)}

/* ---------- 四步流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:8px}
.step{position:relative;padding:0 22px}
.step:first-child{padding-left:0}
.step:last-child{padding-right:0}
.step:not(:last-child)::after{
  content:"";position:absolute;top:19px;right:0;width:calc(100% - 60px);height:0;
  border-top:1px dashed rgba(255,255,255,.16);
}
.step__num{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;
  border:1px solid rgba(47,224,196,.45);color:var(--c-primary);
  font-family:var(--mono);font-size:13px;letter-spacing:.02em;
  background:rgba(47,224,196,.06);
}
.step h3{margin-top:18px;font-size:18px;font-weight:600}
.step p{margin-top:8px;font-size:14px;color:var(--t-2);line-height:1.85}

/* ---------- 频道入口卡 ---------- */
.channel-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.channel-card{
  display:block;padding:0;border-radius:var(--radius-card);overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.channel-card:hover{transform:translateY(-3px);border-color:rgba(47,224,196,.32);box-shadow:0 0 0 1px rgba(47,224,196,.2),0 24px 44px -20px rgba(0,0,0,.9)}
.channel-card__cover{position:relative;overflow:hidden;aspect-ratio:16/9}
.channel-card__cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform var(--ease)}
.channel-card:hover .channel-card__cover img{transform:scale(1.03)}
.channel-card__cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,24,0) 40%,rgba(16,28,48,.92) 100%)}
.channel-card__body{padding:20px 22px 24px}
.channel-card__body h3{font-size:19px;font-weight:700;letter-spacing:-.01em}
.channel-card__body p{margin-top:10px;font-size:14px;color:var(--t-2);line-height:1.85;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.channel-card__foot{display:flex;align-items:center;justify-content:space-between;margin-top:18px;font-size:13px;color:var(--t-3)}
.channel-card__foot .arrow{color:var(--c-primary);transition:transform var(--ease)}
.channel-card:hover .channel-card__foot .arrow{transform:translateX(3px)}

/* ---------- 卡轨 ---------- */
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 0 12px;margin:0 -4px;scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:999px}
.rail-card{
  flex:0 0 calc((100% - 60px) / 4);
  scroll-snap-align:start;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease);
}
.rail-card:hover{transform:translateY(-2px);border-color:rgba(47,224,196,.3)}
.rail-card__cover{position:relative;aspect-ratio:16/9;overflow:hidden}
.rail-card__cover img{width:100%;height:100%;object-fit:cover;border-radius:0}
.rail-card__cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,24,0) 45%,rgba(16,28,48,.9) 100%)}
.rail-card__body{padding:16px 18px 20px}
.rail-card__body h3{margin-top:10px;font-size:16px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rail-card__body p{margin-top:8px;font-size:13px;color:var(--t-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.bar{height:4px;border-radius:999px;background:rgba(255,255,255,.08);margin-top:16px;overflow:hidden}
.bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#2FE0C4,#7FF3DF)}
.bar-label{display:flex;justify-content:space-between;font-size:12px;color:var(--t-3);margin-top:10px;font-family:var(--mono);letter-spacing:.02em}

/* ---------- 准备清单玻璃面板 ---------- */
.check-panel{
  max-width:900px;margin:0 auto;
  padding:32px 34px 34px;border-radius:var(--radius-glass);
  background:rgba(255,255,255,.045);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid rgba(255,255,255,.08);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 24px 50px -24px rgba(0,0,0,.85);
}
.check-panel__head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.check-panel__head h3{font-size:20px;font-weight:700}
.check-panel__head span{font-size:13px;color:var(--t-2)}
.check-panel .bar{margin-top:20px;height:6px}
.check-list{margin-top:24px;display:flex;flex-direction:column;gap:2px}
.check-item{
  display:flex;align-items:flex-start;gap:14px;padding:14px 0;
  border-bottom:1px solid var(--line);font-size:15px;
}
.check-item:last-child{border-bottom:0}
.check-item .box{
  flex:0 0 20px;width:20px;height:20px;border-radius:50%;margin-top:3px;
  display:grid;place-items:center;font-size:12px;
  border:1px solid var(--line-strong);color:transparent;
}
.check-item.is-done .box{border-color:var(--c-primary);background:rgba(47,224,196,.16);color:var(--c-primary)}
.check-item.is-done .label{color:var(--t-3);text-decoration:line-through;text-decoration-color:rgba(255,255,255,.18)}
.check-item .label small{display:block;font-size:13px;color:var(--t-3);margin-top:4px}

/* ---------- CTA 条 ---------- */
.cta-band{
  border-radius:20px;padding:38px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:
    radial-gradient(600px 200px at 88% 0%,rgba(255,122,77,.18),transparent 65%),
    linear-gradient(120deg,#0E1B2E 0%,#0B1424 62%,#132238 100%);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.cta-band h3{font-size:24px;font-weight:700;letter-spacing:-.01em}
.cta-band p{margin-top:10px;font-size:14px;color:var(--t-2);max-width:560px}
.pulse{animation:pulseGlow 3.6s ease-in-out infinite}
@keyframes pulseGlow{
  0%,100%{box-shadow:0 10px 26px -14px rgba(255,122,77,.75)}
  50%{box-shadow:0 0 30px rgba(255,122,77,.42)}
}
@media (prefers-reduced-motion:reduce){
  .pulse{animation:none}
  html{scroll-behavior:auto}
  *{transition:none!important}
}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease);
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(47,224,196,.3)}
.news-card__link{display:flex;flex-direction:column;height:100%}
.news-card__cover{position:relative;aspect-ratio:16/9;overflow:hidden}
.news-card__cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform var(--ease)}
.news-card:hover .news-card__cover img{transform:scale(1.03)}
.news-card__cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,24,0) 45%,rgba(16,28,48,.95) 100%)}
.news-card__body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card__title{font-size:17px;font-weight:600;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__desc{font-size:14px;color:var(--t-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--t-3);font-family:var(--mono);letter-spacing:.02em;
}
.news-card__meta .arrow{color:var(--c-primary);font-family:inherit;transition:transform var(--ease)}
.news-card:hover .news-card__meta .arrow{transform:translateX(3px)}
.empty-state{
  grid-column:1/-1;min-height:200px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:16px;text-align:center;
  border:1px dashed var(--line-strong);border-radius:var(--radius-card);
  background:var(--bg-1);padding:36px 24px;
}
.empty-state p{font-size:15px;color:var(--t-2)}

/* ---------- FAQ ---------- */
.faq{max-width:900px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;font-size:16px;font-weight:600;transition:color var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--c-primary)}
.faq .plus{
  flex:0 0 22px;width:22px;height:22px;position:relative;transition:transform var(--ease);
}
.faq .plus::before,.faq .plus::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--t-2);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq .plus::before{width:12px;height:2px}
.faq .plus::after{width:2px;height:12px}
.faq details[open] .plus{transform:rotate(45deg)}
.faq details[open] .plus::before,.faq details[open] .plus::after{background:var(--c-primary)}
.faq .answer{padding:0 4px 24px;font-size:15px;color:var(--t-2);line-height:1.9;max-width:760px}

/* ---------- 订阅表单 ---------- */
.subscribe{
  display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center;
  background:var(--bg-1);border:1px solid var(--line);border-radius:20px;
  padding:40px;box-shadow:var(--shadow-card);
}
.subscribe h3{font-size:26px;font-weight:700;letter-spacing:-.01em;line-height:1.4}
.subscribe p{margin-top:12px;font-size:14px;color:var(--t-2);line-height:1.9}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:13px;color:var(--t-2)}
.field input{
  height:48px;border-radius:12px;border:1px solid var(--line);
  background:var(--bg-0);color:var(--t-1);padding:0 16px;font-size:14px;outline:none;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field input::placeholder{color:var(--t-3)}
.field input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(47,224,196,.12)}
.form-actions{display:flex;align-items:center;gap:14px;margin-top:20px;flex-wrap:wrap}
.form-tip{font-size:12.5px;color:var(--t-3)}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-1);padding:64px 0 0;margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--t-2);line-height:1.9;max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--t-1);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--t-2);transition:color var(--ease)}
.footer-col a:hover{color:var(--t-1);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:52px;border-top:1px solid var(--line);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--t-3);
}
.footer-bottom .sep{opacity:.4;margin:0 8px}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero__grid{gap:36px}
  .hero h1{font-size:40px}
}
@media (max-width:1023px){
  .section{padding:76px 0}
  .hero{padding:56px 0 68px}
  .hero__grid{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:36px}
  .hero__figure img{height:320px}
  .channel-cards{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .rail-card{flex:0 0 calc((100% - 20px) / 2)}
  .steps{grid-template-columns:repeat(2,1fr);row-gap:36px}
  .step:nth-child(2)::after{display:none}
  .step{padding:0 20px 0 0}
  .subscribe{grid-template-columns:1fr;gap:28px;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .topbar__tools .searchbox{display:none}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .section-head{margin-bottom:28px}
  .section-head h2{font-size:24px}
  .hero h1{font-size:30px;line-height:1.32}
  .hero__sub{font-size:15px}
  .hero__actions .btn{flex:1 1 auto}
  .topbar__tools{display:none}
  .hamburger{display:flex}
  .channel-bar{display:none}
  .channel-cards{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .rail-card{flex:0 0 84%}
  .steps{grid-template-columns:1fr;row-gap:0}
  .step{padding:0 0 24px 34px;position:relative}
  .step:not(:last-child)::after{display:none}
  .step::before{
    content:"";position:absolute;left:11px;top:38px;bottom:0;width:1px;
    background:rgba(255,255,255,.14);
  }
  .step:last-child::before{display:none}
  .step__num{position:absolute;left:0;top:0;width:24px;height:24px;font-size:11px}
  .step h3{margin-top:0}
  .check-panel{padding:24px 20px 26px}
  .cta-band{padding:28px 22px}
  .cta-band h3{font-size:20px}
  .cta-band .btn{width:100%}
  .form-row{grid-template-columns:1fr}
  .subscribe{padding:26px 20px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:520px){
  .hero h1{font-size:28px}
  .hero__actions{flex-direction:column}
  .hero__actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .hero__figure img{height:240px}
  .glass-badge{font-size:11.5px;padding:7px 12px}
}

/* roulang page: article */
:root{
  --bg-0:#070C18;
  --bg-1:#0B1424;
  --bg-2:#101C30;
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(255,255,255,.05);
  --c-primary:#2FE0C4;
  --c-primary-deep:#25B8A1;
  --c-accent:#FF7A4D;
  --c-tag:#A78BFA;
  --t-1:#E8EEF7;
  --t-2:#9BAABF;
  --t-3:#6C7A90;
  --r-card:16px;
  --r-img:12px;
  --r-glass:18px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.06),0 18px 40px -16px rgba(0,0,0,.7);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,12,24,.86);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.topbar__inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand__mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  font-size:19px;font-weight:800;color:#06231F;
  background:linear-gradient(135deg,#2FE0C4,#4DF0D6);
  box-shadow:0 0 18px rgba(47,224,196,.35);
}
.brand__text{display:flex;flex-direction:column;line-height:1.25}
.brand__name{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--t-1)}
.brand__sub{font-size:11px;color:var(--t-3);letter-spacing:.12em}
.topbar__right{display:flex;align-items:center;gap:16px;margin-left:auto}
.search{
  display:flex;align-items:center;height:38px;padding:0 4px 0 14px;
  background:var(--bg-1);border:1px solid var(--line);border-radius:999px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(47,224,196,.12)}
.search input{width:186px;background:none;border:0;outline:none;color:var(--t-1);font-size:13px}
.search input::placeholder{color:var(--t-3)}
.search button{
  width:30px;height:30px;border:0;border-radius:50%;cursor:pointer;
  background:rgba(47,224,196,.14);color:var(--c-primary);
  display:grid;place-items:center;transition:background .2s var(--ease);
}
.search button:hover{background:rgba(47,224,196,.26)}
.topbar__link{font-size:13px;color:var(--t-2);transition:color .2s var(--ease)}
.topbar__link:hover{color:var(--c-primary)}
.nav-toggle{
  display:none;margin-left:auto;width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--t-1);
  align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:rgba(47,224,196,.5);color:var(--c-primary)}
.channel-bar{border-top:1px solid var(--line-soft)}
.channel-list{display:flex;gap:6px;padding:6px 0;overflow-x:auto;scrollbar-width:none}
.channel-list::-webkit-scrollbar{display:none}
.channel-list a{
  position:relative;padding:9px 15px;font-size:14px;color:var(--t-2);
  border-radius:8px;white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.channel-list a:hover{color:var(--t-1);background:rgba(255,255,255,.05)}
.channel-list a.is-active{color:var(--c-primary)}
.channel-list a.is-active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:0;height:2px;border-radius:2px;
  background:var(--c-primary);box-shadow:0 0 10px rgba(47,224,196,.6);
}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:80;background:rgba(3,6,14,.62);
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;
  width:min(320px,86vw);padding:20px;display:flex;flex-direction:column;
  background:#0A1322;border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .28s var(--ease);
}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
.drawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px}
.drawer__close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--t-2);cursor:pointer;font-size:18px;line-height:1;
  display:grid;place-items:center;transition:color .2s var(--ease),border-color .2s var(--ease);
}
.drawer__close:hover{color:var(--c-primary);border-color:rgba(47,224,196,.5)}
.drawer__nav{display:flex;flex-direction:column;gap:2px;flex:1}
.drawer__nav a{
  padding:14px 12px;border-radius:12px;font-size:15px;color:var(--t-2);
  border-bottom:1px solid var(--line-soft);transition:color .2s var(--ease),background .2s var(--ease);
}
.drawer__nav a:hover{color:var(--t-1);background:rgba(255,255,255,.05)}
.drawer__nav a.is-active{color:var(--c-primary);background:rgba(47,224,196,.08)}
.drawer__foot{padding-top:18px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;padding:12px 24px;
  font-size:14px;font-weight:600;cursor:pointer;line-height:1.2;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.btn--primary{
  background:linear-gradient(135deg,#2FE0C4 0%,#4DF0D6 100%);
  color:#052A25;
  box-shadow:0 10px 26px -14px rgba(47,224,196,.9);
}
.btn--primary:hover{transform:translateY(-1px);box-shadow:0 0 24px rgba(47,224,196,.35)}
.btn--primary:active{transform:translateY(0);box-shadow:0 6px 16px -12px rgba(47,224,196,.8)}
.btn--outline{background:transparent;border-color:rgba(255,255,255,.16);color:var(--t-1)}
.btn--outline:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px)}
.btn--ghost{background:rgba(255,255,255,.04);border-color:var(--line);color:var(--t-1)}
.btn--ghost:hover{border-color:rgba(47,224,196,.45);color:var(--c-primary)}
.btn--sm{padding:8px 16px;font-size:13px}
.btn--block{width:100%}

/* ---------- page head ---------- */
.page-head{
  position:relative;overflow:hidden;
  padding:40px 0 34px;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,#0B1424 0%,#070C18 100%);
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.16;
}
.page-head::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(760px 300px at 8% -20%,rgba(47,224,196,.16),transparent 70%),
    linear-gradient(180deg,rgba(7,12,24,.55),rgba(7,12,24,.96));
}
.page-head__inner{position:relative;z-index:2}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--t-2);margin-bottom:20px;
}
.breadcrumb a{color:var(--t-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.breadcrumb .sep{color:var(--t-3)}
.breadcrumb .current{color:var(--t-1)}
.channel-tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;padding:5px 12px;border-radius:999px;
  color:#C6B6FF;background:rgba(167,139,250,.16);
  border:1px solid rgba(167,139,250,.24);
}
.page-title{
  font-size:clamp(26px,3.6vw,40px);
  font-weight:800;line-height:1.3;letter-spacing:-.01em;
  margin:16px 0 0;max-width:900px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;
  margin-top:18px;font-size:13px;color:var(--t-2);
}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:7px;font-variant-numeric:tabular-nums;letter-spacing:.02em}
.meta-row .dot{width:5px;height:5px;border-radius:50%;background:var(--c-primary);display:inline-block}

/* ---------- article layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);
  gap:40px;padding:48px 0 72px;
}
.article-main{min-width:0;max-width:780px}
.article-body{font-size:16px;line-height:1.85;color:#D6E0EE;word-break:break-word;overflow-wrap:anywhere}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;margin:32px 0 14px;padding-left:14px;
  font-size:26px;font-weight:700;line-height:1.4;color:var(--t-1);letter-spacing:-.01em;
}
.article-body h2:first-child{margin-top:0}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;width:3px;height:1.05em;border-radius:2px;
  background:var(--c-primary);
}
.article-body h3{font-size:20px;font-weight:600;line-height:1.5;color:var(--t-1);margin:26px 0 12px}
.article-body h4{font-size:17px;font-weight:600;color:var(--t-1);margin:22px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.45em}
.article-body li::marker{color:var(--c-primary)}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;transition:opacity .2s var(--ease)}
.article-body a:hover{opacity:.82}
.article-body strong{color:var(--t-1);font-weight:600}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;
  border-left:3px solid var(--c-primary);border-radius:0 12px 12px 0;
  background:rgba(255,255,255,.045);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  color:var(--t-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:24px 0 10px;width:100%}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--t-3);margin-top:8px}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;
  border-radius:12px;overflow:hidden;border:1px solid var(--line);
}
.article-body thead th{background:#142138;color:var(--t-1);font-weight:600;text-align:left;padding:12px 14px}
.article-body tbody td{padding:12px 14px;color:var(--t-2);border-top:1px solid var(--line)}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.03)}
.article-body code{
  font-family:ui-monospace,"SFMono-Regular","Cascadia Mono",Menlo,Consolas,monospace;
  font-size:.92em;background:rgba(255,255,255,.07);border-radius:6px;padding:2px 6px;color:#BFEFE6;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

/* ---------- toc ---------- */
.article-toc{display:none}
.toc-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 14px;box-shadow:var(--shadow-card);
}
.toc-card h2{font-size:12px;letter-spacing:.14em;color:var(--t-3);font-weight:600;margin:0 0 12px;padding-left:8px}
.toc-card a{
  display:block;padding:8px 10px;border-radius:8px;font-size:13px;color:var(--t-2);
  border-left:2px solid transparent;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.toc-card a:hover{color:var(--t-1);background:rgba(255,255,255,.05)}
.toc-card a.is-current{color:var(--c-primary);border-left-color:var(--c-primary);background:rgba(47,224,196,.08)}

/* ---------- tags / related ---------- */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin-top:36px;padding-top:24px;border-top:1px solid var(--line);
}
.tag-row .label{font-size:13px;color:var(--t-3);margin-right:4px}
.tag{
  font-size:12px;padding:6px 12px;border-radius:999px;
  color:#C6B6FF;background:rgba(167,139,250,.16);border:1px solid rgba(167,139,250,.24);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.tag:hover{background:rgba(167,139,250,.3);color:#E4DCFF}
.back-row{margin-top:28px}
.related{padding:8px 0 8px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.section-head h2{font-size:26px;font-weight:700;letter-spacing:-.01em;line-height:1.35}
.section-head p{font-size:14px;color:var(--t-2);margin-top:8px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-primary);
  white-space:nowrap;transition:gap .2s var(--ease);
}
.link-more:hover{gap:10px;text-decoration:underline;text-underline-offset:3px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:rgba(47,224,196,.3)}
.card__cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0A1322}
.card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card__cover img{transform:scale(1.03)}
.card__cover::after{
  content:"";position:absolute;inset:auto 0 0 0;height:56px;
  background:linear-gradient(180deg,rgba(16,28,48,0),rgba(16,28,48,.92));
}
.card__body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card__badge{
  align-self:flex-start;font-size:12px;padding:4px 10px;border-radius:999px;
  color:#C6B6FF;background:rgba(167,139,250,.16);border:1px solid rgba(167,139,250,.24);
}
.card__title{
  font-size:17px;font-weight:700;line-height:1.5;color:var(--t-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__desc{
  font-size:13px;color:var(--t-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__foot{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-top:auto;padding-top:8px;font-size:12px;color:var(--t-3);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.card__foot .arrow{color:var(--t-3);transition:transform .2s var(--ease),color .2s var(--ease)}
.card:hover .card__foot .arrow{transform:translateX(3px);color:var(--c-primary)}

/* ---------- empty state ---------- */
.empty-state{
  max-width:780px;min-height:200px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  padding:40px 24px;text-align:center;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
}
.empty-state p{color:var(--t-2);font-size:15px}
.empty-state strong{display:block;font-size:19px;color:var(--t-1);margin-bottom:6px;font-weight:700}

/* ---------- cta band ---------- */
.cta-band{padding:48px 0 72px}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:32px;border-radius:var(--r-glass);
  border:1px solid var(--line);
  background:
    radial-gradient(600px 220px at 6% 0%,rgba(47,224,196,.18),transparent 70%),
    linear-gradient(120deg,rgba(255,122,77,.1),rgba(16,28,48,.9));
}
.cta-inner h2{font-size:24px;font-weight:700;letter-spacing:-.01em;line-height:1.4}
.cta-inner p{font-size:14px;color:var(--t-2);margin-top:8px;max-width:560px}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-1);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{font-size:13px;color:var(--t-2);line-height:1.85;margin-top:16px;max-width:330px}
.footer-col h4{font-size:13px;font-weight:600;color:var(--t-1);margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13px;color:var(--t-2);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  margin-top:40px;padding:20px 0;border-top:1px solid var(--line);
  font-size:12px;color:var(--t-3);font-variant-numeric:tabular-nums;
}
.footer-bottom .sep{margin:0 8px;opacity:.5}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .section-head h2{font-size:23px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .topbar__inner{height:64px;gap:12px}
  .topbar__right{display:none}
  .nav-toggle{display:inline-flex}
  .channel-bar{display:none}
  .page-head{padding:28px 0 26px}
  .article-layout{padding:32px 0 48px;gap:32px}
  .article-body{font-size:15px;line-height:1.85}
  .article-body h2{font-size:22px;margin-top:28px}
  .article-body h3{font-size:18px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:24px;gap:20px}
  .cta-inner h2{font-size:20px}
  .cta-band{padding:32px 0 48px}
  .site-footer{padding-top:40px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-brand p{max-width:none}
  .meta-row{font-size:12px;gap:8px 16px}
}
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,780px) 200px;gap:56px;justify-content:start}
  .article-toc{display:block;position:sticky;top:112px;align-self:start}
}
@media (max-width:480px){
  .page-title{font-size:24px}
  .btn{width:100%}
  .btn--sm{width:auto}
  .breadcrumb{font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --bg-0:#070C18;
  --bg-1:#0B1424;
  --bg-2:#101C30;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --c-primary:#2FE0C4;
  --c-primary-soft:#57EFD9;
  --c-accent:#FF7A4D;
  --c-tag:#A78BFA;
  --text:#E8EEF7;
  --text-2:#9BAABF;
  --text-3:#6C7A90;
  --r-card:16px;
  --r-img:12px;
  --r-glass:18px;
  --r-btn:999px;
  --r-input:12px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.06),0 18px 40px -16px rgba(0,0,0,.7);
  --glow-primary:0 0 24px rgba(47,224,196,.35);
  --glow-accent:0 0 26px rgba(255,122,77,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(47,224,196,.28);color:#fff;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.mono{font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(7,12,24,.82);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.header-top__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0;}
.brand__mark{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  font-size:19px;font-weight:800;
  color:#06121F;
  background:linear-gradient(135deg,var(--c-primary-soft),var(--c-primary) 60%,#1C9F8C);
  box-shadow:0 6px 18px -8px rgba(47,224,196,.8);
}
.brand__text{display:flex;flex-direction:column;line-height:1.2;}
.brand__name{font-size:18px;font-weight:800;letter-spacing:-.01em;}
.brand__sub{font-size:12px;color:var(--text-3);letter-spacing:.06em;}
.header-tools{display:flex;align-items:center;gap:16px;}
.search-box{
  display:flex;align-items:center;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  padding:4px 4px 4px 16px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{border-color:rgba(47,224,196,.6);box-shadow:0 0 0 3px rgba(47,224,196,.12);}
.search-box input{
  width:200px;border:0;background:transparent;
  font-size:14px;color:var(--text);padding:7px 0;
}
.search-box input::placeholder{color:var(--text-3);}
.search-box button{
  width:32px;height:32px;border-radius:50%;
  display:grid;place-items:center;
  color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.search-box button:hover{color:var(--c-primary);background:rgba(47,224,196,.1);}
.link-quiet{
  font-size:14px;color:var(--text-2);
  transition:color .2s var(--ease);
}
.link-quiet:hover{color:var(--text);text-decoration:underline;text-underline-offset:4px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);
  font-weight:600;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn--outline-sm{
  padding:8px 18px;font-size:14px;
  border:1px solid rgba(47,224,196,.55);
  color:var(--c-primary);
  background:rgba(47,224,196,.06);
}
.btn--outline-sm:hover{background:rgba(47,224,196,.14);box-shadow:var(--glow-primary);transform:translateY(-1px);}
.btn--primary{
  padding:14px 30px;font-size:16px;
  color:#06121F;
  background:linear-gradient(135deg,var(--c-primary-soft),var(--c-primary));
  box-shadow:0 10px 28px -14px rgba(47,224,196,.9);
}
.btn--primary:hover{transform:translateY(-1px);box-shadow:var(--glow-primary),0 12px 30px -14px rgba(47,224,196,.9);}
.btn--primary:active{transform:translateY(0);}
.btn--accent{
  padding:14px 30px;font-size:16px;
  color:#1A0C05;
  background:linear-gradient(135deg,#FFA07A,var(--c-accent));
  box-shadow:0 10px 26px -14px rgba(255,122,77,.9);
}
.btn--accent:hover{transform:translateY(-1px);box-shadow:var(--glow-accent);}
.btn--accent:active{transform:translateY(0);}
.btn--ghost{
  padding:13px 28px;font-size:15px;
  border:1px solid var(--line-strong);
  color:var(--text);
  background:transparent;
}
.btn--ghost:hover{border-color:rgba(47,224,196,.6);color:var(--c-primary);}
.btn--text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--c-primary);font-weight:600;
}
.btn--text .arrow{transition:transform .2s var(--ease);}
.btn--text:hover .arrow{transform:translateX(3px);}
.btn--block{width:100%;}

.header-channels{border-top:1px solid var(--line);}
.channel-list{
  display:flex;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  padding:10px 0;
}
.channel-list::-webkit-scrollbar{display:none;}
.channel-list a{
  position:relative;
  padding:6px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:8px;
  transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.channel-list a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.channel-list a.is-active{color:var(--text);font-weight:600;}
.channel-list a.is-active::after{
  content:"";
  position:absolute;left:14px;right:14px;bottom:0;
  height:2px;border-radius:2px;
  background:var(--c-primary);
  box-shadow:0 0 12px rgba(47,224,196,.6);
}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-strong);
  color:var(--text);
  place-items:center;
}
.nav-toggle:hover{border-color:rgba(47,224,196,.6);color:var(--c-primary);}

/* drawer */
.drawer{
  position:fixed;inset:0;z-index:120;
  visibility:hidden;pointer-events:none;
}
.drawer.is-open{visibility:visible;pointer-events:auto;}
.drawer__mask{
  position:absolute;inset:0;
  background:rgba(4,8,16,.72);
  opacity:0;transition:opacity .25s var(--ease);
}
.drawer.is-open .drawer__mask{opacity:1;}
.drawer__panel{
  position:absolute;top:0;right:0;bottom:0;
  width:min(320px,86vw);
  background:var(--bg-1);
  border-left:1px solid var(--line);
  padding:20px;
  display:flex;flex-direction:column;gap:20px;
  transform:translateX(100%);
  transition:transform .28s var(--ease);
  overflow-y:auto;
}
.drawer.is-open .drawer__panel{transform:translateX(0);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer__close{
  width:38px;height:38px;border-radius:10px;
  border:1px solid var(--line-strong);
  display:grid;place-items:center;color:var(--text-2);
}
.drawer__close:hover{color:var(--c-primary);border-color:rgba(47,224,196,.6);}
.drawer__nav{display:flex;flex-direction:column;gap:6px;}
.drawer__nav a{
  padding:12px 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.drawer__nav a:hover{background:rgba(255,255,255,.04);color:var(--text);}
.drawer__nav a.is-active{
  color:#06121F;font-weight:700;
  background:linear-gradient(135deg,var(--c-primary-soft),var(--c-primary));
}
.drawer__search{display:flex;gap:8px;}
.drawer__search input{
  flex:1;min-width:0;
  background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--r-input);padding:10px 12px;font-size:14px;
}
.drawer__search input:focus{outline:none;border-color:rgba(47,224,196,.6);box-shadow:0 0 0 3px rgba(47,224,196,.12);}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(120deg,rgba(7,12,24,.95) 12%,rgba(7,12,24,.78) 48%,rgba(7,12,24,.94) 100%),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:100% 28px;
  opacity:.5;
  pointer-events:none;
}
.page-hero__inner{
  position:relative;z-index:2;
  padding:56px 0 52px;
  min-height:262px;
  display:flex;flex-direction:column;justify-content:center;gap:16px;
  max-width:760px;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-2);
}
.breadcrumb a{transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--text);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:var(--text-3);}
.page-hero h1{
  font-size:clamp(28px,4vw,42px);
  line-height:1.26;
  font-weight:800;
  letter-spacing:-.01em;
}
.page-hero p{
  font-size:15px;
  color:var(--text-2);
  max-width:640px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px;}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge--tag{background:rgba(167,139,250,.16);color:#C7B7FF;}
.badge--primary{background:rgba(47,224,196,.14);color:var(--c-primary);}
.badge--accent{background:rgba(255,122,77,.16);color:#FFA98B;}

/* ---------- sections ---------- */
main{display:block;}
.section{padding:88px 0;}
.section--tight{padding:72px 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:36px;flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(24px,3vw,32px);
  font-weight:700;line-height:1.3;letter-spacing:-.01em;
}
.section-head h2::before{
  content:"";
  display:inline-block;
  width:3px;height:22px;border-radius:2px;
  background:var(--c-primary);
  vertical-align:-3px;
  margin-right:14px;
}
.section-sub{
  font-size:14px;color:var(--text-2);
  margin-top:10px;max-width:640px;
}

/* card grid */
.card-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.entry-card{
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  display:flex;flex-direction:column;
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.entry-card:hover{
  transform:translateY(-2px);
  border-color:rgba(47,224,196,.3);
  box-shadow:0 0 0 1px rgba(47,224,196,.2),0 22px 44px -18px rgba(0,0,0,.75);
}
.entry-card__media{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  background:var(--bg-2);
}
.entry-card__media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .35s var(--ease);
}
.entry-card:hover .entry-card__media img{transform:scale(1.03);}
.entry-card__media::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:56px;
  background:linear-gradient(to top,rgba(11,20,36,.92),transparent);
}
.entry-card__body{
  padding:22px 24px 24px;
  display:flex;flex-direction:column;gap:12px;
  flex:1;
}
.entry-card__body h3{
  font-size:19px;font-weight:700;line-height:1.45;
  letter-spacing:-.01em;
}
.entry-card__body p{
  font-size:15px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.entry-card__foot{
  margin-top:auto;padding-top:8px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}

/* steps */
.steps{
  display:flex;flex-direction:column;gap:0;
  border-left:1px solid var(--line);
  padding-left:0;
  margin-left:8px;
}
.step{
  position:relative;
  padding:0 0 34px 34px;
}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";
  position:absolute;left:-7px;top:9px;
  width:13px;height:13px;border-radius:50%;
  background:var(--bg-0);
  border:2px solid var(--c-primary);
  box-shadow:0 0 0 4px rgba(47,224,196,.1);
}
.step__num{
  font-size:13px;color:var(--c-primary);font-weight:700;
  letter-spacing:.14em;
}
.step h3{font-size:19px;font-weight:700;margin:6px 0 8px;line-height:1.45;}
.step p{font-size:15px;color:var(--text-2);max-width:620px;}
.step__meta{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;
}

/* split block */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.split__media{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  background:var(--bg-2);
  aspect-ratio:4/3;
}
.split__media img{width:100%;height:100%;object-fit:cover;}
.split__text h2{
  font-size:clamp(24px,3vw,30px);
  font-weight:700;line-height:1.32;margin-bottom:16px;letter-spacing:-.01em;
}
.split__text > p{color:var(--text-2);font-size:15px;margin-bottom:20px;}
.check-list{display:flex;flex-direction:column;gap:14px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text-2);
}
.check-list li::before{
  content:"✓";
  flex-shrink:0;
  width:22px;height:22px;border-radius:50%;
  display:grid;place-items:center;
  font-size:12px;font-weight:700;
  color:#06121F;
  background:var(--c-primary);
  margin-top:3px;
}

/* notes (two column panels) */
.note-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.note-panel{
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px;
}
.note-panel__head{
  display:flex;align-items:center;gap:12px;margin-bottom:18px;
}
.note-panel__icon{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  background:rgba(47,224,196,.12);
  color:var(--c-primary);
  font-size:15px;font-weight:700;
}
.note-panel h3{font-size:18px;font-weight:700;}
.note-panel ul{display:flex;flex-direction:column;gap:12px;}
.note-panel li{
  font-size:15px;color:var(--text-2);
  padding-left:16px;position:relative;
}
.note-panel li::before{
  content:"";
  position:absolute;left:0;top:11px;
  width:5px;height:5px;border-radius:50%;
  background:var(--text-3);
}

/* faq */
.faq{border-top:1px solid var(--line);}
.faq details{
  border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.faq details[open]{background:rgba(255,255,255,.015);}
.faq summary{
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;
  cursor:pointer;
  font-size:16px;font-weight:600;
  transition:color .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--c-primary);}
.faq summary .plus{
  flex-shrink:0;
  width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line-strong);
  display:grid;place-items:center;
  color:var(--text-2);
  transition:transform .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.faq details[open] summary .plus{
  transform:rotate(45deg);
  color:var(--c-primary);
  border-color:rgba(47,224,196,.5);
}
.faq .faq__body{
  padding:0 4px 24px;
  font-size:15px;color:var(--text-2);
  max-width:820px;
}

/* CTA band */
.cta-band{
  background:
    radial-gradient(120% 160% at 100% 0%,rgba(255,122,77,.16),transparent 55%),
    linear-gradient(135deg,var(--bg-2),var(--bg-1));
  border:1px solid var(--line);
  border-radius:var(--r-glass);
  padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow-card);
}
.cta-band h2{
  font-size:clamp(22px,2.6vw,28px);
  font-weight:700;line-height:1.35;letter-spacing:-.01em;
}
.cta-band p{font-size:15px;color:var(--text-2);margin-top:10px;max-width:520px;}
.pulse{animation:pulseGlow 3.6s ease-in-out infinite;}
@keyframes pulseGlow{
  0%,100%{box-shadow:0 10px 26px -14px rgba(255,122,77,.9);}
  50%{box-shadow:0 10px 26px -14px rgba(255,122,77,.9),0 0 24px rgba(255,122,77,.34);}
}

/* footer */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-1);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{
  font-size:14px;color:var(--text-2);max-width:340px;
}
.footer-col h4{
  font-size:14px;font-weight:700;color:var(--text);
  margin-bottom:16px;letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{
  font-size:14px;color:var(--text-2);
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--text);text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .sep{margin:0 10px;color:var(--line-strong);}

/* responsive */
@media (max-width:1024px){
  .container{padding:0 20px;}
  .search-box input{width:150px;}
  .split{gap:32px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:900px){
  .header-channels{display:none;}
  .nav-toggle{display:grid;}
  .search-box{display:none;}
  .link-quiet{display:none;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .card-grid{grid-template-columns:1fr;}
  .note-grid{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;gap:24px;}
  .split__media{order:-1;aspect-ratio:16/9;}
  .page-hero__inner{padding:44px 0 40px;min-height:auto;}
  .cta-band{padding:32px 24px;flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .step{padding-left:26px;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .header-top__inner{min-height:64px;gap:12px;}
  .brand__mark{width:36px;height:36px;font-size:17px;}
  .brand__name{font-size:16px;}
  .brand__sub{display:none;}
  .btn--outline-sm{padding:7px 14px;font-size:13px;}
  .section-head{margin-bottom:24px;}
  .entry-card__body{padding:18px 18px 20px;}
  .note-panel{padding:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .btn--primary,.btn--accent{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --bg-0:#070C18;
  --bg-1:#0B1424;
  --bg-2:#101C30;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --c-primary:#2FE0C4;
  --c-primary-bright:#5CF0D8;
  --c-accent:#FF7A4D;
  --c-tag:#A78BFA;
  --t-1:#E8EEF7;
  --t-2:#9BAABF;
  --t-3:#6C7A90;
  --r-card:16px;
  --r-img:12px;
  --r-glass:18px;
  --r-pill:999px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.06),0 18px 40px -16px rgba(0,0,0,.7);
  --shadow-float:0 0 0 1px rgba(255,255,255,.10),0 24px 50px -20px rgba(0,0,0,.8);
  --glow:0 0 24px rgba(47,224,196,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease)}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1,h2,h3,h4{line-height:1.25;letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;left:-9999px;top:0;z-index:200;background:var(--c-primary);color:#04120F;padding:10px 18px;border-radius:0 0 10px 0;font-weight:700}
.skip:focus{left:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(7,12,24,.86);backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);border-bottom:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(255,255,255,.06)}
.header-top__inner{display:flex;align-items:center;gap:24px;min-height:74px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand__mark{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;background:linear-gradient(135deg,var(--c-primary),#17967F);color:#04120F;font-weight:800;font-size:19px;box-shadow:0 0 20px rgba(47,224,196,.28)}
.brand__text{display:flex;flex-direction:column;line-height:1.2}
.brand__name{font-size:17px;font-weight:800;letter-spacing:-.01em}
.brand__sub{font-size:11px;color:var(--t-3);letter-spacing:.14em}
.header-tools{display:flex;align-items:center;gap:16px;margin-left:auto}
.search{display:flex;align-items:center;gap:6px;background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-pill);padding:4px 4px 4px 16px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.search:focus-within{border-color:rgba(47,224,196,.6);box-shadow:0 0 0 3px rgba(47,224,196,.12)}
.search__input{width:168px;background:transparent;border:0;outline:none;font-size:14px;padding:6px 0;color:var(--t-1)}
.search__input::placeholder{color:var(--t-3)}
.search__btn{border-radius:var(--r-pill);background:rgba(47,224,196,.14);color:var(--c-primary);font-size:13px;font-weight:700;padding:7px 14px;transition:background-color .2s var(--ease),color .2s var(--ease)}
.search__btn:hover{background:rgba(47,224,196,.24)}
.header-link{font-size:14px;color:var(--t-2);white-space:nowrap}
.header-link:hover{color:var(--t-1)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-pill);font-weight:700;letter-spacing:.01em;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease)}
.btn--sm{font-size:14px;padding:9px 20px}
.btn--md{font-size:15px;padding:13px 28px}
.btn--primary{background:linear-gradient(135deg,var(--c-primary-bright),var(--c-primary));color:#04120F;box-shadow:0 10px 26px -12px rgba(47,224,196,.7)}
.btn--primary:hover{transform:translateY(-1px);box-shadow:var(--glow),0 14px 30px -12px rgba(47,224,196,.8)}
.btn--primary:active{transform:translateY(0);box-shadow:0 6px 16px -10px rgba(47,224,196,.6)}
.btn--ghost{background:transparent;border:1px solid var(--line-strong);color:var(--t-1)}
.btn--ghost:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px)}
.btn--ghost:active{transform:translateY(0)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary)}
.text-link span{transition:transform .2s var(--ease)}
.text-link:hover span{transform:translateX(3px)}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);padding:0 10px}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--t-1);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.header-channels{border-top:1px solid var(--line)}
.channel-list{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none}
.channel-list::-webkit-scrollbar{display:none}
.channel-list a{position:relative;display:inline-block;padding:14px 16px;font-size:15px;font-weight:600;color:var(--t-2);white-space:nowrap;border-bottom:2px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.channel-list a:hover{color:var(--t-1)}
.channel-list a.is-active{color:var(--c-primary);border-bottom-color:var(--c-primary)}
.channel-list a.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;border-radius:2px;background:var(--c-primary);box-shadow:0 0 14px rgba(47,224,196,.7)}

/* ---------- Drawer ---------- */
.drawer{position:fixed;inset:0;z-index:120;display:none}
.drawer.is-open{display:block}
.drawer__mask{position:absolute;inset:0;background:rgba(4,8,16,.72);backdrop-filter:blur(4px)}
.drawer__panel{position:relative;width:min(320px,84vw);height:100%;background:var(--bg-1);border-right:1px solid var(--line);padding:20px;display:flex;flex-direction:column;gap:20px;box-shadow:24px 0 60px -30px #000;transform:translateX(-100%);animation:slideIn .24s var(--ease) forwards;overflow-y:auto}
@keyframes slideIn{to{transform:translateX(0)}}
.drawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer__close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line-strong);display:grid;place-items:center;font-size:16px;color:var(--t-2)}
.drawer__close:hover{color:var(--t-1);border-color:var(--line-strong)}
.drawer__search{display:flex;gap:8px}
.drawer__search input{flex:1;min-width:0;background:var(--bg-0);border:1px solid var(--line-strong);border-radius:12px;padding:10px 14px;font-size:14px;outline:none}
.drawer__search input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(47,224,196,.12)}
.drawer__list{display:flex;flex-direction:column;gap:4px}
.drawer__list a{padding:12px 14px;border-radius:12px;font-size:15px;font-weight:600;color:var(--t-2);border:1px solid transparent}
.drawer__list a:hover{color:var(--t-1);background:rgba(255,255,255,.04)}
.drawer__list a.is-active{color:var(--c-primary);background:rgba(47,224,196,.10);border-color:rgba(47,224,196,.28)}

/* ---------- Page hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:var(--bg-1)}
.page-hero__bg{position:absolute;inset:0;background-image:url("/assets/images/backpic/back-2.webp");background-size:cover;background-position:center;opacity:.5}
.page-hero__bg::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(7,12,24,.96) 0%,rgba(7,12,24,.86) 48%,rgba(7,12,24,.62) 100%)}
.page-hero__inner{position:relative;padding:52px 0 46px}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t-2);margin-bottom:18px}
.crumbs a:hover{color:var(--t-1);text-decoration:underline}
.crumbs span[aria-current]{color:var(--t-3)}
.page-hero h1{font-size:40px;font-weight:800;max-width:820px}
.page-hero__sub{margin-top:14px;font-size:16px;color:var(--t-2);max-width:660px}
.page-hero__tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;line-height:1;padding:7px 12px;border-radius:var(--r-pill);letter-spacing:.02em}
.badge--tag{background:rgba(167,139,250,.16);color:#C9BAFF;border:1px solid rgba(167,139,250,.28)}
.badge--accent{background:rgba(255,122,77,.16);color:#FFA783;border:1px solid rgba(255,122,77,.30)}
.badge--ok{background:rgba(47,224,196,.14);color:var(--c-primary);border:1px solid rgba(47,224,196,.30)}
.badge--soft{background:rgba(255,255,255,.05);color:var(--t-2);border:1px solid var(--line)}

/* ---------- Sections ---------- */
.section{padding:72px 0}
.section--tight{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:30px;font-weight:700;position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;background:var(--c-primary)}
.section-head p{font-size:14px;color:var(--t-2);margin-top:8px;padding-left:16px}
.section-head .text-link{flex-shrink:0}

/* ---------- Overview ---------- */
.overview{display:grid;grid-template-columns:1.35fr .95fr;gap:32px;align-items:start}
.overview__text h2{font-size:28px;font-weight:700;margin-bottom:16px}
.overview__text p{color:var(--t-2);font-size:15px;margin-bottom:14px}
.overview__text p strong{color:var(--t-1);font-weight:700}
.glass-panel{
  background:rgba(255,255,255,.045);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid rgba(255,255,255,.08);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 24px 50px -26px rgba(0,0,0,.8);
  border-radius:var(--r-glass);
  padding:24px;
}
.glass-panel h3{font-size:16px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.glass-panel h3::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 12px rgba(47,224,196,.8)}
.info-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.09);font-size:14px}
.info-row:last-child{border-bottom:0;padding-bottom:0}
.info-row dt{color:var(--t-3);flex-shrink:0}
.info-row dd{margin:0;color:var(--t-1);text-align:right;font-weight:600}
.info-row dd span{font-family:var(--mono);letter-spacing:.02em}

/* ---------- Timeline ---------- */
.timeline{position:relative;padding-left:44px;max-width:960px}
.timeline::before{content:"";position:absolute;left:11px;top:10px;bottom:14px;width:1px;background:linear-gradient(180deg,rgba(47,224,196,.55),rgba(47,224,196,.18) 40%,rgba(255,255,255,.06))}
.tl-item{position:relative;margin-bottom:22px}
.tl-item::before{content:"";position:absolute;left:-38px;top:24px;width:11px;height:11px;border-radius:50%;background:var(--bg-0);border:2px solid var(--c-primary);box-shadow:0 0 12px rgba(47,224,196,.55)}
.tl-item--muted::before{border-color:rgba(255,255,255,.24);box-shadow:none}
.tl-card{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);padding:22px 24px;transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.tl-card:hover{transform:translateY(-2px);border-color:rgba(47,224,196,.3);box-shadow:var(--shadow-card)}
.tl-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:12px}
.tl-time{font-family:var(--mono);font-size:12.5px;letter-spacing:.02em;color:var(--t-3)}
.tl-card h3{font-size:19px;font-weight:700;margin-bottom:8px}
.tl-card p{font-size:15px;color:var(--t-2);margin-bottom:14px}
.tl-wide{position:relative;margin:6px 0 26px;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--bg-1);box-shadow:var(--shadow-card);display:grid;grid-template-columns:1.15fr 1fr}
.tl-wide::before{content:"";position:absolute;left:-38px;top:44px;width:11px;height:11px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 14px rgba(255,122,77,.6);z-index:2}
.tl-wide__media{position:relative;min-height:230px;overflow:hidden}
.tl-wide__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.tl-wide:hover .tl-wide__media img{transform:scale(1.04)}
.tl-wide__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,24,.05),rgba(7,12,24,.55))}
.tl-wide__body{padding:26px 26px 24px;display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.tl-wide__body h3{font-size:21px;font-weight:700}
.tl-wide__body p{font-size:15px;color:var(--t-2)}
.tl-wide__body .btn{margin-top:4px}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step{position:relative;background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;transition:border-color .2s var(--ease),transform .2s var(--ease)}
.step:hover{border-color:rgba(47,224,196,.28);transform:translateY(-2px)}
.step__num{font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--c-primary);display:inline-flex;align-items:center;gap:8px;margin-bottom:14px}
.step__num::before{content:"";width:9px;height:9px;border-radius:50%;border:2px solid var(--c-primary);box-shadow:0 0 10px rgba(47,224,196,.5)}
.step h3{font-size:17px;font-weight:700;margin-bottom:8px}
.step p{font-size:14px;color:var(--t-2)}
.step:not(:last-child)::after{content:"";position:absolute;right:-24px;top:46px;width:24px;border-top:1px dashed rgba(255,255,255,.18)}

/* ---------- Checklist panel ---------- */
.checklist{max-width:900px;margin:0 auto;padding:28px 30px}
.checklist__head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px;flex-wrap:wrap}
.checklist__head h3{font-size:18px;font-weight:700}
.bar{height:6px;border-radius:var(--r-pill);background:rgba(255,255,255,.08);overflow:hidden;margin-bottom:22px}
.bar span{display:block;height:100%;width:72%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--c-primary),var(--c-primary-bright))}
.checklist ul{display:flex;flex-direction:column;gap:14px}
.checklist li{display:flex;gap:12px;align-items:flex-start;font-size:15px}
.checklist li .tick{flex-shrink:0;width:20px;height:20px;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:800;margin-top:4px}
.checklist li.is-done{color:var(--t-3)}
.checklist li.is-done .tick{background:rgba(47,224,196,.16);color:var(--c-primary);border:1px solid rgba(47,224,196,.4)}
.checklist li.is-todo{color:var(--t-1)}
.checklist li.is-todo .tick{border:1px solid rgba(255,255,255,.26);color:transparent}

/* ---------- FAQ ---------- */
.faq{max-width:900px;margin:0 auto;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 4px;font-size:16px;font-weight:700;cursor:pointer;list-style:none;transition:color .2s var(--ease)}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--c-primary)}
.faq summary::after{content:"+";font-size:20px;font-weight:400;color:var(--t-3);transition:transform .2s var(--ease),color .2s var(--ease)}
.faq details[open] summary::after{transform:rotate(45deg);color:var(--c-primary)}
.faq details p{padding:0 4px 22px;font-size:15px;color:var(--t-2);max-width:760px}

/* ---------- CTA ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-glass);border:1px solid var(--line);background:linear-gradient(120deg,rgba(47,224,196,.12),rgba(255,122,77,.10) 65%,rgba(16,28,48,.9));padding:38px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.cta-band::after{content:"";position:absolute;right:-80px;top:-60px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(47,224,196,.22),transparent 68%);pointer-events:none}
.cta-band h2{font-size:26px;font-weight:800;margin-bottom:8px}
.cta-band p{font-size:15px;color:var(--t-2);max-width:520px}
.cta-band .btn{flex-shrink:0}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:56px 0 26px;margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand p{font-size:14px;color:var(--t-2);margin-top:16px;max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--t-1);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--t-2)}
.footer-col a:hover{color:var(--t-1);text-decoration:underline}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:40px;padding-top:22px;border-top:1px solid var(--line);font-size:13px;color:var(--t-3)}
.footer-bottom .sep{margin:0 10px;opacity:.5}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .header-tools .search{display:none}
  .overview{grid-template-columns:1fr;gap:24px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step:not(:last-child)::after{display:none}
  .tl-wide{grid-template-columns:1fr}
  .tl-wide__media{min-height:200px}
  .page-hero h1{font-size:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .header-tools{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .header-top__inner{min-height:64px;gap:12px}
  .header-channels{display:none}
  .page-hero__inner{padding:36px 0 32px}
  .page-hero h1{font-size:28px}
  .page-hero__sub{font-size:15px}
  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px}
  .section-head h2{font-size:24px}
  .timeline{padding-left:30px}
  .timeline::before{left:7px}
  .tl-item::before{left:-30px;top:22px}
  .tl-wide{grid-template-columns:1fr}
  .tl-wide::before{left:-30px;top:36px}
  .tl-card{padding:18px 18px}
  .steps{grid-template-columns:1fr}
  .checklist{padding:22px 20px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px}
  .cta-band h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .page-hero h1{font-size:25px}
  .tl-wide__body{padding:20px}
  .cta-band .btn{width:100%}
  .search{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --bg-0:#070C18;
  --bg-1:#0B1424;
  --bg-2:#101C30;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --c-primary:#2FE0C4;
  --c-primary-dim:#1FBFA8;
  --c-accent:#FF7A4D;
  --c-tag:#A78BFA;
  --t-1:#E8EEF7;
  --t-2:#9BAABF;
  --t-3:#6C7A90;
  --danger:#FF6B6B;
  --radius-card:16px;
  --radius-img:12px;
  --radius-glass:18px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.06), 0 18px 40px -16px rgba(0,0,0,.7);
  --shadow-soft:0 0 0 1px rgba(255,255,255,.06), 0 10px 24px -14px rgba(0,0,0,.65);
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-family:var(--mono);letter-spacing:.02em}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,12,24,.92);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.brandbar__inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:70px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand__mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,#2FE0C4,#1BA694);
  color:#04231F;font-weight:800;font-size:18px;
  box-shadow:0 0 0 1px rgba(47,224,196,.35);
}
.brand__name{display:block;font-size:17px;font-weight:800;letter-spacing:-.01em;line-height:1.3}
.brand__sub{display:block;font-size:11px;color:var(--t-3);letter-spacing:.08em;line-height:1.4}
.brandbar__right{display:flex;align-items:center;gap:16px}
.search{display:flex;align-items:center;gap:8px}
.search input{
  width:190px;height:38px;padding:0 16px;border-radius:999px;
  background:var(--bg-1);border:1px solid var(--line);color:var(--t-1);
  font-size:14px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search input::placeholder{color:var(--t-3)}
.search input:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(47,224,196,.14);
}
.subtle-link{
  font-size:14px;color:var(--t-2);padding:6px 2px;border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.subtle-link:hover{color:var(--t-1);border-color:rgba(255,255,255,.35)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-strong);align-items:center;justify-content:center;gap:4px;
  flex-direction:column;transition:border-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--c-primary)}
.nav-toggle span{display:block;width:16px;height:1.6px;background:var(--t-1);border-radius:2px}

.channelbar{border-top:1px solid var(--line)}
.channelbar__inner{display:flex;align-items:center;min-height:48px}
.channel-list{display:flex;align-items:center;gap:26px;overflow-x:auto;scrollbar-width:none}
.channel-list::-webkit-scrollbar{display:none}
.channel-list a{
  position:relative;flex:0 0 auto;padding:12px 0;font-size:15px;color:var(--t-2);
  transition:color .2s var(--ease);
}
.channel-list a:hover{color:var(--t-1)}
.channel-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:var(--c-primary);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform .2s var(--ease);
}
.channel-list a.is-active{color:var(--t-1);font-weight:600}
.channel-list a.is-active::after{transform:scaleX(1)}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,12,.72);
  opacity:0;pointer-events:none;transition:opacity .25s var(--ease);z-index:70;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:300px;max-width:86vw;z-index:80;
  background:var(--bg-0);border-right:1px solid var(--line);
  transform:translateX(-102%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:24px}
.drawer__close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line-strong);
  display:grid;place-items:center;color:var(--t-2);font-size:18px;line-height:1;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.drawer__close:hover{color:var(--t-1);border-color:var(--c-primary)}
.drawer__nav{display:flex;flex-direction:column;gap:4px}
.drawer__nav a{
  padding:14px 12px;border-radius:12px;color:var(--t-2);font-size:15px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.drawer__nav a:hover{background:rgba(255,255,255,.05);color:var(--t-1)}
.drawer__nav a.is-active{
  color:var(--t-1);background:rgba(47,224,196,.12);
  box-shadow:inset 2px 0 0 var(--c-primary);font-weight:600;
}
.drawer__note{margin-top:auto;font-size:13px;color:var(--t-3);padding-top:20px;border-top:1px solid var(--line)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn--primary{
  background:linear-gradient(135deg,#3DF0D2,#26C9B1);color:#04231F;
  box-shadow:0 8px 20px -12px rgba(47,224,196,.9);
}
.btn--primary:hover{
  transform:translateY(-1px);
  box-shadow:0 0 24px rgba(47,224,196,.35),0 12px 26px -14px rgba(47,224,196,.8);
  background:linear-gradient(135deg,#58F7DC,#2FD8C0);
}
.btn--primary:active{transform:translateY(0)}
.btn--accent{
  background:linear-gradient(135deg,#FF8E63,#F0653A);color:#2A0F06;
  box-shadow:0 8px 20px -12px rgba(255,122,77,.85);
}
.btn--accent:hover{
  transform:translateY(-1px);
  box-shadow:0 0 26px rgba(255,122,77,.35),0 12px 26px -14px rgba(255,122,77,.8);
}
.btn--ghost{
  background:transparent;color:var(--t-1);border:1px solid var(--line-strong);
}
.btn--ghost:hover{border-color:var(--c-primary);color:#B9F7EC}
.btn--sm{height:38px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;box-shadow:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--t-2);font-size:14px;font-weight:600;transition:color .2s var(--ease)}
.link-arrow svg{transition:transform .2s var(--ease)}
.link-arrow:hover{color:var(--c-primary)}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;
  padding:6px 10px;border-radius:999px;letter-spacing:.02em;
  background:rgba(167,139,250,.16);color:#CBBDFD;
}
.badge--primary{background:rgba(47,224,196,.14);color:#8DF2E1}
.badge--accent{background:rgba(255,122,77,.16);color:#FFB59A}
.badge--plain{background:rgba(255,255,255,.05);color:var(--t-2)}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  min-height:264px;display:flex;align-items:center;padding:52px 0;
}
.page-hero__bg{position:absolute;inset:0;z-index:0}
.page-hero__bg img{width:100%;height:100%;object-fit:cover;opacity:.5}
.page-hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(7,12,24,.96) 0%,rgba(7,12,24,.86) 45%,rgba(7,12,24,.7) 100%);
}
.page-hero__inner{position:relative;z-index:1;max-width:760px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t-2);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--t-1);text-decoration:underline}
.breadcrumb .sep{color:var(--t-3)}
.breadcrumb .current{color:var(--t-1)}
.page-hero h1{
  font-size:40px;line-height:1.25;font-weight:800;letter-spacing:-.01em;margin-bottom:14px;
}
.page-hero__sub{font-size:16px;color:var(--t-2);max-width:620px;margin-bottom:20px}
.page-hero__meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--t-3)}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:32px;flex-wrap:wrap;
}
.section-head h2{font-size:30px;font-weight:700;letter-spacing:-.01em;line-height:1.3}
.section-head h2::before{
  content:"";display:inline-block;width:3px;height:22px;border-radius:2px;
  background:var(--c-primary);margin-right:12px;vertical-align:-3px;
}
.section-head p{font-size:14px;color:var(--t-2);margin-top:10px}

/* ---------- 双栏主体 ---------- */
.split{
  display:grid;grid-template-columns:minmax(0,1fr) 328px;
  gap:36px;align-items:start;
}
.entry-list{border-top:1px solid var(--line)}
.entry{
  display:grid;grid-template-columns:56px minmax(0,1fr) 22px;
  gap:20px;padding:26px 12px;border-bottom:1px solid var(--line);
  border-radius:4px;transition:background .2s var(--ease);
}
.entry:hover{background:rgba(255,255,255,.028)}
.entry__no{
  font-family:var(--mono);font-size:14px;color:var(--t-3);
  letter-spacing:.02em;padding-top:3px;
}
.entry:hover .entry__no{color:var(--c-primary)}
.entry__title{
  font-size:18px;font-weight:600;line-height:1.5;margin-bottom:8px;
  letter-spacing:-.01em;transition:color .2s var(--ease);
}
.entry:hover .entry__title{color:#B9F7EC}
.entry__desc{font-size:14px;color:var(--t-2);line-height:1.8;margin-bottom:12px}
.entry__meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:12px;color:var(--t-3)}
.entry__arrow{align-self:center;color:var(--t-3);transition:color .2s var(--ease),transform .2s var(--ease)}
.entry:hover .entry__arrow{color:var(--c-primary);transform:translateX(3px)}

/* ---------- 侧栏 ---------- */
.sidebar{position:sticky;top:126px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-soft);
}
.side-card h3{font-size:15px;font-weight:700;margin-bottom:14px;letter-spacing:-.01em}
.side-card p{font-size:13.5px;color:var(--t-2);line-height:1.85}
.side-card p + p{margin-top:10px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  font-size:13px;padding:6px 12px;border-radius:999px;
  border:1px solid var(--line);color:var(--t-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.tag:hover{color:#8DF2E1;border-color:rgba(47,224,196,.5);background:rgba(47,224,196,.08)}
.side-list{display:flex;flex-direction:column;gap:12px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14px;color:var(--t-2);padding-bottom:12px;border-bottom:1px solid var(--line);
  transition:color .2s var(--ease);
}
.side-list a:last-child{border-bottom:0;padding-bottom:0}
.side-list a:hover{color:var(--t-1)}
.side-list .idx{font-family:var(--mono);font-size:12px;color:var(--t-3)}

/* ---------- 浏览方式条 ---------- */
.how-strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;
}
.how-strip__item{background:var(--bg-1);padding:26px 24px}
.how-strip__item h3{font-size:16px;font-weight:600;margin-bottom:8px}
.how-strip__item h3 span{
  font-family:var(--mono);font-size:12px;color:var(--c-primary);
  margin-right:8px;letter-spacing:.06em;
}
.how-strip__item p{font-size:14px;color:var(--t-2);line-height:1.8}

/* ---------- 精选专题卡 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:rgba(47,224,196,.3);box-shadow:var(--shadow-card)}
.card__media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-1)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.card:hover .card__media img{transform:scale(1.03)}
.card__media::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:40%;
  background:linear-gradient(180deg,rgba(16,28,48,0) 0%,rgba(16,28,48,.85) 100%);
}
.card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card__title{font-size:17px;font-weight:600;line-height:1.5;letter-spacing:-.01em}
.card__desc{font-size:14px;color:var(--t-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card__foot{
  margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;
  gap:12px;font-size:12px;color:var(--t-3);border-top:1px solid var(--line);
}

/* ---------- FAQ ---------- */
.faq{max-width:880px;border-top:1px solid var(--line)}
.faq__item{border-bottom:1px solid var(--line)}
.faq__q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:16px;font-weight:600;cursor:pointer;list-style:none;
  transition:color .2s var(--ease);
}
.faq__q::-webkit-details-marker{display:none}
.faq__q:hover{color:#B9F7EC}
.faq__icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--t-2);font-size:15px;line-height:1;
  transition:transform .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.faq__item[open] .faq__icon{transform:rotate(45deg);color:var(--c-primary);border-color:rgba(47,224,196,.5)}
.faq__a{font-size:15px;color:var(--t-2);line-height:1.85;padding:0 4px 22px;max-width:780px}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:34px 36px;border-radius:var(--radius-glass);
  background:linear-gradient(120deg,rgba(47,224,196,.1),rgba(167,139,250,.08) 55%,rgba(255,122,77,.08));
  border:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.cta-band h2{font-size:24px;font-weight:700;letter-spacing:-.01em;margin-bottom:8px}
.cta-band p{font-size:14px;color:var(--t-2)}
.cta-band__actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;border-top:1px solid var(--line);background:var(--bg-1);
  padding:56px 0 24px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand p{font-size:13.5px;color:var(--t-2);line-height:1.85;margin-top:16px;max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--t-1)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--t-2);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--t-1);text-decoration:underline}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--t-3);
}
.footer-bottom .sep{margin:0 8px;color:var(--t-3)}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .split{grid-template-columns:minmax(0,1fr);gap:28px}
  .sidebar{position:static;top:auto;flex-direction:row;flex-wrap:wrap}
  .sidebar .side-card{flex:1 1 280px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .page-hero h1{font-size:34px}
}
@media (max-width:900px){
  .search{display:none}
}
@media (max-width:820px){
  .how-strip{grid-template-columns:1fr}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .brandbar__inner{min-height:62px;gap:12px}
  .brandbar__right{display:none}
  .nav-toggle{display:flex}
  .channelbar{display:none}
  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .page-hero{min-height:220px;padding:40px 0}
  .page-hero h1{font-size:28px}
  .page-hero__sub{font-size:15px}
  .section-head h2{font-size:24px}
  .section-head h2::before{height:18px}
  .entry{grid-template-columns:40px minmax(0,1fr);gap:14px;padding:22px 4px}
  .entry__arrow{display:none}
  .feature-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 22px}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{margin-top:56px}
}
@media (max-width:480px){
  .brand__name{font-size:15px}
  .brand__mark{width:34px;height:34px;border-radius:10px;font-size:16px}
  .entry__title{font-size:16px}
  .btn{width:auto}
  .cta-band h2{font-size:20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}