/* roulang page: index */
:root{
  --bg:#0A0C0F;
  --bg-section:#10141A;
  --bg-card:#171D25;
  --bg-card-hover:#1F2731;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --line-accent:rgba(201,247,63,.4);
  --primary:#C9F73F;
  --primary-hover:#D8FF63;
  --primary-active:#A9D42B;
  --accent:#FF6A2B;
  --dot:#38E1D0;
  --text:#F4F7F3;
  --text-sub:#A7B2BD;
  --text-weak:#6E7A87;
  --paper:#F6F6F1;
  --paper-text:#14181D;
  --paper-link:#6E8F0F;
  --r-card:16px;
  --r-lg:20px;
  --r-img:14px;
  --r-pill:999px;
  --r-input:12px;
  --r-badge:6px;
  --sh:0 8px 24px -16px rgba(0,0,0,.8);
  --sh-hover:0 18px 40px -20px rgba(0,0,0,.9);
  --sh-btn:0 8px 24px -8px rgba(201,247,63,.45);
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px;
  --s7:48px; --s8:64px; --s9:88px; --s10:120px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease,transform .2s ease;}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid rgba(201,247,63,.6);
  outline-offset:2px;
  border-radius:6px;
}
::selection{background:rgba(201,247,63,.28);color:#fff;}

/* ---------- 容器 ---------- */
.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:var(--s9) 0;}
.section--tight{padding:var(--s8) 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:var(--s5);
  margin-bottom:var(--s6);
}
.section-head h2{
  font-size:clamp(22px,2.5vw,34px);
  letter-spacing:-.02em;
}
.section-desc{
  margin-top:var(--s3);
  color:var(--text-sub);
  font-size:15px;
  line-height:1.7;
  max-width:640px;
}
.more-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  border-bottom:1px solid transparent;
  padding-bottom:2px;
}
.more-link:hover{color:var(--primary-hover);border-bottom-color:var(--primary-hover);}
.more-link:active{color:var(--primary-active);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:var(--s2);
  padding:0 24px;
  height:46px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn-primary{background:var(--primary);color:#0A0C0F;border-color:var(--primary);}
.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);box-shadow:var(--sh-btn);transform:translateY(-1px);}
.btn-primary:active{background:var(--primary-active);border-color:var(--primary-active);transform:translateY(0);box-shadow:none;}
.btn-primary:disabled{background:#39411f;border-color:#39411f;color:rgba(255,255,255,.45);cursor:not-allowed;box-shadow:none;transform:none;}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:var(--line-accent);color:var(--primary-hover);background:rgba(255,255,255,.03);transform:translateY(-1px);}
.btn-ghost:active{border-color:var(--primary-active);color:var(--primary-active);transform:translateY(0);}
.btn-ghost:disabled{border-color:var(--line);color:var(--text-weak);cursor:not-allowed;transform:none;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  font-size:12px;
  line-height:1.6;
  border-radius:var(--r-badge);
  border:1px solid var(--line-strong);
  color:var(--text-sub);
  background:rgba(10,12,15,.6);
}
.badge-dot{border-color:rgba(56,225,208,.5);color:#8FF3E7;}
.badge-warm{border-color:rgba(255,106,43,.5);color:#FFB48C;}
.dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--dot);
  box-shadow:0 0 0 3px rgba(56,225,208,.16);
  flex:none;
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:3px 10px;
  font-size:12px;
  border-radius:var(--r-badge);
  border:1px solid var(--line);
  color:var(--text-weak);
}
.meta{
  font-size:12.5px;
  color:var(--text-weak);
  line-height:1.6;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(10,12,15,.72);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(10,12,15,.92);
  border-bottom-color:var(--line);
  backdrop-filter:blur(12px);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:var(--s5);
  height:76px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:none;
}
.brand-mark{
  width:34px;height:34px;
  border-radius:11px;
  border:1px solid var(--line-accent);
  background:linear-gradient(135deg,rgba(201,247,63,.18),rgba(255,106,43,.12));
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--primary);
  flex:none;
}
.brand-mark svg{width:19px;height:19px;}
.brand-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.brand-text b{color:var(--primary);font-weight:800;}
.nav-channels{
  display:flex;
  align-items:center;
  gap:var(--s5);
  margin-left:var(--s2);
}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text-sub);
  padding:6px 0;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:var(--s3);
}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(23,29,37,.7);
  min-width:200px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 2px rgba(201,247,63,.18);
}
.nav-search svg{width:17px;height:17px;color:var(--text-weak);flex:none;}
.nav-search input{
  width:100%;
  background:none;
  border:0;
  outline:none;
  font-size:14px;
  color:var(--text);
}
.nav-search input::placeholder{color:var(--text-weak);}
.nav-burger{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  align-items:center;
  justify-content:center;
  color:var(--text);
}
.nav-burger svg{width:20px;height:20px;}
.nav-burger:hover{border-color:var(--line-accent);color:var(--primary);}
.nav-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(10,12,15,.98);
  padding:var(--s4) 0 var(--s5);
}
.nav-drawer.is-open{display:block;}
.drawer-list{display:flex;flex-direction:column;}
.drawer-list a{
  padding:13px 0;
  font-size:16px;
  color:var(--text-sub);
  border-bottom:1px solid var(--line);
}
.drawer-list a:hover,.drawer-list a.is-active{color:var(--primary);}
.drawer-foot{display:flex;gap:var(--s3);margin-top:var(--s5);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  min-height:82vh;
  display:flex;
  align-items:center;
  border-bottom:1px solid var(--line);
}
.hero-media{
  position:absolute;
  inset:0;
  z-index:0;
}
.hero-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.5;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  background:
    linear-gradient(180deg,rgba(10,12,15,.72) 0%,rgba(10,12,15,.62) 42%,rgba(10,12,15,.94) 88%,#0A0C0F 100%);
}
.hero-arc{
  position:absolute;
  right:-140px;
  top:8%;
  width:520px;
  height:520px;
  border:1px solid rgba(201,247,63,.16);
  border-radius:50%;
  z-index:1;
  pointer-events:none;
}
.hero-arc::before{
  content:"";
  position:absolute;
  inset:64px;
  border:1px solid rgba(255,106,43,.14);
  border-radius:50%;
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(320px,.85fr);
  gap:var(--s8);
  align-items:center;
  padding-top:var(--s9);
  padding-bottom:var(--s9);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  background:rgba(23,29,37,.72);
  font-size:13px;
  color:var(--text-sub);
  margin-bottom:var(--s5);
}
.hero h1{
  font-size:clamp(34px,5.2vw,66px);
  line-height:1.06;
  letter-spacing:-.02em;
  font-weight:800;
  max-width:16em;
}
.hero-sub{
  margin-top:var(--s5);
  font-size:17px;
  color:var(--text-sub);
  line-height:1.8;
  max-width:26em;
}
.hero-cta{
  display:flex;
  flex-wrap:wrap;
  gap:var(--s3);
  margin-top:var(--s6);
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:var(--s7);
  margin-top:var(--s8);
  padding-top:var(--s6);
  border-top:1px solid var(--line);
}
.hero-stats .stat-num{
  display:block;
  font-size:26px;
  font-weight:800;
  color:var(--primary);
  letter-spacing:-.02em;
}
.hero-stats .stat-label{
  display:block;
  font-size:13px;
  color:var(--text-weak);
  margin-top:2px;
}

/* ---------- 登录卡 ---------- */
.login-card{
  border:1px solid var(--line-strong);
  border-radius:var(--r-lg);
  background:rgba(16,20,26,.88);
  padding:var(--s6);
  box-shadow:var(--sh);
  backdrop-filter:blur(10px);
}
.login-title{font-size:20px;font-weight:700;}
.login-tip{
  margin-top:var(--s2);
  font-size:13.5px;
  color:var(--text-weak);
}
.field{display:block;margin-top:var(--s5);}
.field-label{
  display:block;
  font-size:12px;
  color:var(--text-weak);
  margin-bottom:var(--s2);
  letter-spacing:.02em;
}
.field input{
  width:100%;
  height:46px;
  padding:0 14px;
  border-radius:var(--r-input);
  border:1px solid var(--line);
  background:rgba(10,12,15,.7);
  color:var(--text);
  font-size:15px;
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field input::placeholder{color:#5C6773;}
.field input:hover{border-color:var(--line-strong);}
.field input:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 2px rgba(201,247,63,.2);
  background:rgba(10,12,15,.9);
}
.field input:disabled{opacity:.5;cursor:not-allowed;}
.login-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:var(--s4);
  font-size:13px;
}
.check{display:inline-flex;align-items:center;gap:8px;color:var(--text-sub);cursor:pointer;}
.check input{
  width:15px;height:15px;
  accent-color:#C9F73F;
  cursor:pointer;
}
.link-minor{color:var(--text-sub);}
.link-minor:hover{color:var(--primary);}
.login-card .btn{margin-top:var(--s5);}
.login-foot{
  margin-top:var(--s4);
  font-size:12.5px;
  color:var(--text-weak);
  text-align:center;
}
.login-foot a{color:var(--primary);border-bottom:1px solid rgba(201,247,63,.35);}
.login-foot a:hover{color:var(--primary-hover);}

/* ---------- 横滑片库 ---------- */
.rail-wrap{position:relative;}
.rail{
  display:flex;
  gap:var(--s5);
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  scroll-behavior:smooth;
  padding:var(--s2) var(--s2) var(--s5);
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-btn{
  position:absolute;
  top:38%;
  z-index:5;
  width:46px;height:46px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  background:rgba(10,12,15,.9);
  color:var(--text);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.rail-btn svg{width:19px;height:19px;}
.rail-btn:hover{border-color:var(--line-accent);color:var(--primary);background:rgba(23,29,37,.96);}
.rail-btn:active{border-color:var(--primary-active);color:var(--primary-active);}
.rail-btn[disabled]{opacity:.35;cursor:not-allowed;}
.rail-prev{left:-23px;}
.rail-next{right:-23px;}

/* ---------- 海报卡 ---------- */
.poster-card{
  position:relative;
  flex:0 0 auto;
  width:272px;
  scroll-snap-align:start;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-card);
  padding:12px;
  box-shadow:var(--sh);
  transition:transform .24s ease,border-color .24s ease,background-color .24s ease,box-shadow .24s ease;
}
.poster-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-accent);
  background:var(--bg-card-hover);
  box-shadow:var(--sh-hover);
}
.poster-card:active{transform:translateY(-1px);}
.poster-media{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  aspect-ratio:16/10;
  background:var(--bg-card);
}
.poster-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.poster-card:hover .poster-media img{transform:scale(1.03);}
.poster-media .badge{
  position:absolute;
  top:10px;right:10px;
  backdrop-filter:blur(6px);
}
.poster-body{padding:14px 4px 4px;}
.poster-body h3{
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.poster-body .meta{margin-top:8px;}
.poster-card--tall .poster-media{aspect-ratio:2/3;}

/* ---------- 热播推荐 ---------- */
.rank-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--s5);
}
.rank-item{position:relative;padding-left:38px;}
.rank-num{
  position:absolute;
  left:0;top:-8px;
  font-size:44px;
  font-weight:800;
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1.4px rgba(201,247,63,.65);
  letter-spacing:-.03em;
  pointer-events:none;
}
.rank-item .poster-card{width:100%;}

/* ---------- 非对称片单 ---------- */
.asym{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--s5);
}
.asym-feature{
  grid-column:span 7;
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-card);
  min-height:420px;
  display:flex;
  align-items:flex-end;
  transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.asym-feature img{
  position:absolute;inset:0;
  width:100%;height:100%;
  object-fit:cover;
  opacity:.66;
  transition:transform .5s ease;
}
.asym-feature:hover{border-color:var(--line-accent);transform:translateY(-4px);box-shadow:var(--sh-hover);}
.asym-feature:hover img{transform:scale(1.03);}
.asym-feature::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,15,.15) 30%,rgba(10,12,15,.92) 100%);
}
.asym-feature-body{
  position:relative;
  z-index:2;
  padding:var(--s6);
}
.asym-feature-body h3{
  font-size:24px;
  font-weight:700;
  margin-top:var(--s3);
}
.asym-feature-body p{
  margin-top:var(--s3);
  color:var(--text-sub);
  font-size:14.5px;
  max-width:34em;
}
.asym-side{
  grid-column:span 5;
  display:grid;
  gap:var(--s5);
}
.asym-mini{
  display:grid;
  grid-template-columns:112px minmax(0,1fr);
  gap:var(--s4);
  align-items:center;
  padding:var(--s3);
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-card);
  transition:border-color .24s ease,background-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.asym-mini:hover{
  border-color:var(--line-accent);
  background:var(--bg-card-hover);
  transform:translateY(-3px);
  box-shadow:var(--sh-hover);
}
.asym-mini-media{
  border-radius:var(--r-img);
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--bg-card);
}
.asym-mini-media img{width:100%;height:100%;object-fit:cover;}
.asym-mini h3{font-size:16px;font-weight:600;line-height:1.5;}
.asym-mini .meta{margin-top:6px;}

/* ---------- 最新信息 ---------- */
.cms-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--s5);
}
.cms-card{
  display:flex;
  flex-direction:column;
  gap:var(--s3);
  padding:var(--s5);
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-card);
  box-shadow:var(--sh);
  transition:border-color .24s ease,background-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.cms-card:hover{
  border-color:var(--line-accent);
  background:var(--bg-card-hover);
  transform:translateY(-4px);
  box-shadow:var(--sh-hover);
}
.cms-cat{
  align-self:flex-start;
  padding:3px 10px;
  font-size:12px;
  border-radius:var(--r-badge);
  border:1px solid rgba(56,225,208,.45);
  color:#8FF3E7;
}
.cms-title{
  font-size:18px;
  font-weight:600;
  line-height:1.55;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.cms-desc{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.cms-meta{
  margin-top:auto;
  padding-top:var(--s3);
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--text-weak);
}
.empty-state{
  border:1px dashed var(--line-strong);
  border-radius:var(--r-card);
  padding:var(--s8) var(--s5);
  text-align:center;
  color:var(--text-sub);
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:var(--s4);
}
.empty-state svg{width:30px;height:30px;color:var(--text-weak);}
.empty-state p{font-size:15px;}

/* ---------- 数据条 ---------- */
.facts{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:var(--s5);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:var(--s7) 0;
}
.fact-num{
  font-size:32px;
  font-weight:800;
  color:var(--primary);
  letter-spacing:-.02em;
}
.fact-label{
  margin-top:6px;
  font-size:14px;
  color:var(--text-sub);
}

/* ---------- 流程时间线 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:var(--s5);
}
.step{
  position:relative;
  padding:var(--s5);
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-section);
  transition:border-color .24s ease,transform .24s ease;
}
.step:hover{border-color:var(--line-accent);transform:translateY(-3px);}
.step-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;height:36px;
  border-radius:11px;
  border:1px solid var(--line-accent);
  color:var(--primary);
  font-size:14px;
  font-weight:700;
  margin-bottom:var(--s4);
}
.step h3{font-size:17px;font-weight:600;}
.step p{margin-top:var(--s3);font-size:14px;color:var(--text-sub);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--bg-card);
  margin-bottom:var(--s3);
  overflow:hidden;
  transition:border-color .2s ease;
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item[open]{border-color:var(--line-accent);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px var(--s6) 18px var(--s5);
  min-height:60px;
  display:flex;
  align-items:center;
  font-size:16px;
  font-weight:600;
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";
  position:absolute;
  right:22px;
  top:50%;
  width:14px;height:14px;
  margin-top:-7px;
  background:
    linear-gradient(var(--primary),var(--primary)) center/14px 1.6px no-repeat,
    linear-gradient(var(--primary),var(--primary)) center/1.6px 14px no-repeat;
  transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-answer{
  background:var(--paper);
  color:var(--paper-text);
  padding:var(--s5) var(--s6);
  font-size:15px;
  line-height:1.9;
  border-top:1px solid var(--line);
}
.faq-answer a{color:var(--paper-link);font-weight:600;border-bottom:1px solid rgba(110,143,15,.4);}
.faq-answer a:hover{color:#557009;}

/* ---------- 收尾 CTA ---------- */
.cta-band{
  border:1px solid var(--line-accent);
  border-radius:var(--r-lg);
  padding:var(--s7) var(--s8);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--s6);
  background:rgba(23,29,37,.6);
}
.cta-band h2{font-size:clamp(20px,2.2vw,28px);}
.cta-band p{margin-top:var(--s3);color:var(--text-sub);font-size:15px;max-width:32em;}
.cta-actions{display:flex;gap:var(--s3);flex:none;}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-section);
  margin-top:var(--s10);
  padding-top:var(--s9);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:var(--s7);
  padding-bottom:var(--s8);
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:var(--s4);
}
.footer-about{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.8;
  max-width:34em;
}
.footer-col h3{
  font-size:14px;
  font-weight:700;
  color:var(--primary);
  margin-bottom:var(--s4);
  letter-spacing:.02em;
}
.footer-col li + li{margin-top:10px;}
.footer-col a{
  font-size:14px;
  color:var(--text-sub);
  display:inline-block;
}
.footer-col a:hover{color:var(--primary);transform:translateX(2px);}
.footer-col a:active{color:var(--primary-active);}
.footer-contact li{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.8;
}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:var(--s5) 0;
  display:flex;
  flex-wrap:wrap;
  gap:var(--s3) var(--s5);
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-weak);
}
.footer-bottom a{color:var(--text-weak);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-search{min-width:160px;}
  .hero-inner{gap:var(--s7);}
  .asym-feature{grid-column:span 12;min-height:360px;}
  .asym-side{grid-column:span 12;grid-template-columns:repeat(3,minmax(0,1fr));}
  .asym-mini{grid-template-columns:1fr;}
  .asym-mini-media{aspect-ratio:16/9;}
}
@media (max-width:1023px){
  .nav-channels,.nav-search{display:none;}
  .nav-burger{display:inline-flex;}
  .hero-inner{grid-template-columns:minmax(0,1fr);padding-top:var(--s8);padding-bottom:var(--s8);}
  .hero{min-height:auto;}
  .hero h1{max-width:100%;}
  .login-card{max-width:520px;}
  .cms-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .rank-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .facts{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--s6);}
  .cta-band{flex-direction:column;align-items:flex-start;padding:var(--s6);}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
}
@media (max-width:899px){
  .asym-side{grid-template-columns:1fr;}
  .rail-btn{display:none;}
  .rail{padding-left:0;padding-right:0;}
  .poster-card{width:78vw;max-width:320px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .section{padding:64px 0;}
  .nav-wrap{height:66px;gap:var(--s3);}
  .brand-text{font-size:15px;}
  .nav-actions .btn-ghost{display:none;}
  .hero-inner{padding-top:var(--s7);padding-bottom:var(--s7);}
  .hero h1{font-size:33px;}
  .hero-sub{font-size:15.5px;}
  .hero-stats{gap:var(--s5);margin-top:var(--s6);padding-top:var(--s5);}
  .hero-stats .stat-num{font-size:22px;}
  .hero-arc{display:none;}
  .login-card{padding:var(--s5);}
  .section-head{flex-direction:column;align-items:flex-start;gap:var(--s3);margin-bottom:var(--s5);}
  .cms-grid{grid-template-columns:1fr;}
  .rank-grid{grid-template-columns:1fr;}
  .rank-item{padding-left:32px;}
  .rank-num{font-size:36px;}
  .steps{grid-template-columns:1fr;}
  .facts{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s5);}
  .fact-num{font-size:26px;}
  .faq-item summary{font-size:15px;padding:16px var(--s6) 16px var(--s4);}
  .faq-answer{padding:var(--s4) var(--s5);}
  .footer-grid{grid-template-columns:1fr;gap:var(--s6);}
  .cta-band{padding:var(--s5);}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --bg:#0A0C0F;
  --bg-section:#10141A;
  --card:#171D25;
  --card-hover:#1F2731;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --line-main:rgba(201,247,63,.4);
  --primary:#C9F73F;
  --primary-hover:#D8FF63;
  --primary-active:#A9D42B;
  --accent:#FF6A2B;
  --cyan:#38E1D0;
  --text:#F4F7F3;
  --text-sub:#A7B2BD;
  --text-weak:#6E7A87;
  --paper:#F6F6F1;
  --paper-soft:#ECECE4;
  --paper-text:#14181D;
  --paper-line:#D8D8CE;
  --paper-link:#6E8F0F;
  --radius-card:16px;
  --radius-large:20px;
  --radius-img:14px;
  --radius-pill:999px;
  --radius-input:12px;
  --radius-badge:6px;
  --shadow:0 8px 24px -16px rgba(0,0,0,.8);
  --shadow-hover:0 18px 40px -20px rgba(0,0,0,.9);
  --shadow-primary:0 8px 24px -8px rgba(201,247,63,.45);
  --container:1280px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.7;
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4,p,figure,ul,ol,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;background-color:transparent;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid rgba(201,247,63,.6);outline-offset:2px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{padding:88px 0;}
.section-tight{padding:64px 0 88px;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
}
.section-head h2{
  font-size:32px;
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.01em;
}
.section-head p{
  margin-top:10px;
  color:var(--text-sub);
  font-size:15px;
}
.section-more{
  color:var(--primary);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:transform .2s ease,color .2s ease;
}
.section-more:hover{transform:translateX(2px);color:var(--primary-hover);}

/* ============ header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(10,12,15,.92);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:#0A0C0F;border-bottom-color:var(--line-strong);}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:10px;
  border:1px solid var(--line-main);
  color:var(--primary);
  background:#121810;
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{font-size:19px;font-weight:600;letter-spacing:-.01em;white-space:nowrap;}
.brand-text b{color:var(--primary);font-weight:800;}
.nav-channels{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
  flex:1 1 auto;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:15px;
  color:var(--text-sub);
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(.55);}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}
.nav-search{
  position:relative;
  display:flex;
  align-items:center;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  padding:0 14px;
  height:40px;
  min-width:196px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--line-main);box-shadow:0 0 0 2px rgba(201,247,63,.18);}
.nav-search svg{width:16px;height:16px;color:var(--text-weak);flex:0 0 auto;}
.nav-search input{
  width:100%;
  border:0;
  background:transparent;
  padding:0 0 0 8px;
  font-size:14px;
  outline:none;
}
.nav-search input::placeholder{color:var(--text-weak);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:42px;
  padding:0 20px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--primary);color:#0A0C0F;}
.btn-primary:hover{background:var(--primary-hover);box-shadow:var(--shadow-primary);transform:translateY(-1px);}
.btn-primary:active{background:var(--primary-active);transform:translateY(0);}
.btn-ghost{border:1px solid var(--line-strong);color:var(--text);}
.btn-ghost:hover{border-color:var(--line-main);color:var(--primary);}
.btn-ghost:active{color:var(--primary-active);}
.btn-primary:disabled,.btn-ghost:disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border:1px solid var(--line-strong);
  border-radius:12px;
  align-items:center;
  justify-content:center;
  color:var(--text);
}
.nav-toggle:hover{border-color:var(--line-main);color:var(--primary);}
.nav-toggle:active{color:var(--primary-active);}
.nav-toggle svg{width:20px;height:20px;}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--bg-section);
  padding:16px 0 22px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .container{display:flex;flex-direction:column;gap:4px;}
.mobile-drawer .nav-link{padding:12px 4px;font-size:16px;}
.mobile-drawer .drawer-actions{display:flex;gap:12px;margin-top:14px;flex-wrap:wrap;}

/* ============ article hero ============ */
.article-hero{
  position:relative;
  padding:56px 0 64px;
  background-color:#0C0F14;
  background-image:linear-gradient(180deg,rgba(10,12,15,.62) 0%,rgba(10,12,15,.78) 55%,var(--bg) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-hero::after{
  content:"";
  position:absolute;
  right:-140px;
  top:-120px;
  width:520px;
  height:520px;
  border:1px solid rgba(201,247,63,.16);
  border-radius:50%;
  pointer-events:none;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-weak);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--text-sub);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--text-weak);}
.breadcrumb .current{color:var(--text-sub);}
.article-hero h1{
  max-width:900px;
  font-size:clamp(30px,4vw,46px);
  line-height:1.16;
  font-weight:800;
  letter-spacing:-.02em;
  word-break:break-word;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:22px;
  font-size:13px;
  color:var(--text-weak);
}
.article-meta .chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 12px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-badge);
  color:var(--text-sub);
  font-size:12.5px;
}
.article-meta .chip.is-accent{border-color:rgba(56,225,208,.5);color:var(--cyan);}
.article-cover-wrap{margin-top:32px;}
.article-cover{
  position:relative;
  border-radius:var(--radius-large);
  overflow:hidden;
  border:1px solid var(--line);
  background:#171D25;
  aspect-ratio:21/9;
}
.article-cover img{width:100%;height:100%;object-fit:cover;}

/* ============ article layout ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:40px;
  align-items:start;
  padding:64px 0 88px;
}
.paper{
  background:var(--paper);
  color:var(--paper-text);
  border-radius:var(--radius-large);
  padding:48px 56px;
  box-shadow:var(--shadow);
}
.article-body{font-size:16px;line-height:1.9;letter-spacing:.002em;}
.article-body p{margin:0 0 1.3em;}
.article-body h2{
  position:relative;
  font-size:24px;
  font-weight:700;
  line-height:1.45;
  margin:1.9em 0 .8em;
  padding-left:16px;
  color:#101418;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.28em;
  width:3px;
  height:1.02em;
  border-radius:2px;
  background:var(--paper-link);
}
.article-body h3{
  font-size:19px;
  font-weight:600;
  line-height:1.5;
  margin:1.6em 0 .6em;
  color:#101418;
}
.article-body h4{font-size:16px;font-weight:600;margin:1.3em 0 .5em;}
.article-body a{color:var(--paper-link);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:#55700a;}
.article-body strong{font-weight:700;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.2em;line-height:1.85;}
.article-body ul li{list-style:disc;}
.article-body ol li{list-style:decimal;}
.article-body li{margin:.35em 0;}
.article-body img{
  border-radius:var(--radius-img);
  margin:1.4em auto;
  width:auto;
  max-width:100%;
  height:auto;
}
.article-body figure{margin:1.4em 0;}
.article-body figcaption,.article-body .caption{
  font-size:13px;
  color:#6B7078;
  text-align:center;
  margin-top:10px;
}
.article-body blockquote{
  margin:1.5em 0;
  padding:16px 20px;
  background:var(--paper-soft);
  border-left:3px solid var(--paper-link);
  border-radius:0 12px 12px 0;
  color:#232a31;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.5em 0;
  font-size:15px;
}
.article-body th,.article-body td{
  border:1px solid var(--paper-line);
  padding:10px 12px;
  text-align:left;
  vertical-align:top;
}
.article-body th{background:var(--paper-soft);font-weight:600;}
.article-body code{
  background:var(--paper-soft);
  border-radius:6px;
  padding:2px 6px;
  font-size:14px;
}
.article-empty{padding:12px 0 4px;}
.article-empty h2{
  font-size:24px;
  font-weight:700;
  margin-bottom:14px;
  color:#101418;
}
.article-empty p{color:#3d444b;margin-bottom:22px;}

/* ============ side ============ */
.article-side{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
}
.side-card.is-hidden{display:none;}
.side-title{
  font-size:15px;
  font-weight:700;
  color:var(--primary);
  margin-bottom:14px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;
  padding:8px 10px;
  border-left:2px solid transparent;
  color:var(--text-sub);
  font-size:14px;
  border-radius:0 8px 8px 0;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.toc-list a:hover{color:var(--primary);border-left-color:var(--primary);background:var(--card-hover);}
.toc-empty{font-size:14px;color:var(--text-weak);}
.side-links{display:flex;flex-direction:column;gap:10px;}
.side-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:14px;
  color:var(--text-sub);
  padding:10px 12px;
  border:1px solid var(--line);
  border-radius:12px;
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.side-links a:hover{color:var(--primary);border-color:var(--line-main);transform:translateX(2px);}
.side-links span.dot{
  width:6px;height:6px;border-radius:50%;background:var(--cyan);flex:0 0 auto;
}

/* ============ article footer blocks ============ */
.article-foot{margin-top:40px;display:flex;flex-direction:column;gap:24px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag-row .tag-label{font-size:14px;color:var(--text-weak);margin-right:4px;}
.tag{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 12px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-badge);
  font-size:13px;
  color:var(--text-sub);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.tag:hover{color:var(--primary);border-color:var(--line-main);background:var(--card-hover);}
.prevnext{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
}
.prevnext a{
  display:block;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:18px 20px;
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.prevnext a:hover{border-color:var(--line-main);background:var(--card-hover);transform:translateY(-3px);}
.prevnext .pn-label{display:block;font-size:12.5px;color:var(--text-weak);margin-bottom:8px;}
.prevnext .pn-title{font-size:15px;font-weight:600;color:var(--text);line-height:1.6;}
.back-row{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ related ============ */
.related-section{padding:0 0 88px;}
.card-grid{display:grid;gap:24px;}
.rec-grid{display:flex;flex-wrap:wrap;margin:0 -12px;row-gap:24px;}
.rec-grid > .cell{padding:0 12px;}
.poster-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:12px;
  box-shadow:var(--shadow);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease,background .24s ease;
}
.poster-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-main);
  background:var(--card-hover);
  box-shadow:var(--shadow-hover);
}
.poster-media{
  position:relative;
  border-radius:var(--radius-img);
  overflow:hidden;
  background:#171D25;
  aspect-ratio:16/9;
}
.poster-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.poster-card:hover .poster-media img{transform:scale(1.03);}
.poster-badge{
  position:absolute;
  top:10px;
  right:10px;
  padding:3px 9px;
  border-radius:var(--radius-badge);
  border:1px solid rgba(56,225,208,.55);
  background:rgba(10,12,15,.7);
  color:var(--cyan);
  font-size:12px;
}
.poster-body{padding:14px 4px 4px;}
.poster-body h3{font-size:18px;font-weight:600;line-height:1.5;}
.poster-meta{margin-top:10px;font-size:12.5px;color:var(--text-weak);}
.poster-arrow{
  margin-top:14px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
}
.poster-arrow svg{width:16px;height:16px;transition:transform .24s ease;}
.poster-card:hover .poster-arrow svg{transform:translateX(3px);}

/* ============ cta ============ */
.cta-band{
  border:1px solid var(--line-main);
  border-radius:var(--radius-large);
  background:linear-gradient(90deg,rgba(201,247,63,.08),rgba(255,106,43,.06));
  padding:36px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.cta-band h2{font-size:26px;font-weight:700;line-height:1.3;}
.cta-band p{margin-top:10px;color:var(--text-sub);font-size:15px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}

/* ============ footer ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-section);
  padding:64px 0 28px;
  margin-top:8px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid var(--line);
}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-about{color:var(--text-sub);font-size:14px;line-height:1.8;max-width:44ch;}
.footer-col h3{font-size:14px;font-weight:700;color:var(--primary);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{
  color:var(--text-sub);
  font-size:14px;
  transition:color .2s ease,transform .2s ease;
  display:inline-block;
}
.footer-col a:hover{color:var(--primary);transform:translateX(-2px);}
.footer-contact li{color:var(--text-sub);font-size:14px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding-top:24px;
  font-size:13px;
  color:var(--text-weak);
}
.footer-bottom a{color:var(--text-sub);transition:color .2s ease;}
.footer-bottom a:hover{color:var(--primary);}

/* ============ responsive ============ */
@media (max-width:1199px){
  .nav-search{min-width:150px;}
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:28px;}
  .paper{padding:42px 40px;}
}
@media (max-width:1023px){
  .nav-channels{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-search{min-width:0;width:150px;}
}
@media (max-width:899px){
  .section{padding:64px 0;}
  .article-hero{padding:40px 0 48px;}
  .article-layout{grid-template-columns:minmax(0,1fr);padding:48px 0 64px;}
  .article-side{position:static;order:2;}
  .paper{padding:32px 24px;border-radius:16px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}
@media (max-width:639px){
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px;}
  .section-head h2{font-size:24px;}
  .header-inner{gap:12px;min-height:64px;}
  .brand-text{font-size:17px;}
  .nav-search{display:none;}
  .btn{padding:0 16px;font-size:14px;}
  .article-hero h1{font-size:30px;}
  .article-cover{aspect-ratio:16/9;border-radius:16px;}
  .paper{padding:26px 18px;}
  .article-body h2{font-size:20px;}
  .article-body h3{font-size:17px;}
  .article-body table{font-size:13.5px;}
  .prevnext{grid-template-columns:minmax(0,1fr);}
  .poster-body h3{font-size:17px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-band h2{font-size:22px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg:#0A0C0F;
  --bg-block:#10141A;
  --bg-card:#171D25;
  --bg-card-hover:#1F2731;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --line-accent:rgba(201,247,63,.40);
  --primary:#C9F73F;
  --primary-hover:#D8FF63;
  --primary-active:#A9D42B;
  --secondary:#FF6A2B;
  --accent:#38E1D0;
  --text:#F4F7F3;
  --text-2:#A7B2BD;
  --text-3:#6E7A87;
  --paper:#F6F6F1;
  --paper-text:#14181D;
  --paper-link:#6E8F0F;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-img:14px;
  --radius-btn:999px;
  --radius-input:12px;
  --radius-badge:6px;
  --shadow-1:0 8px 24px -16px rgba(0,0,0,.8);
  --shadow-2:0 18px 40px -20px rgba(0,0,0,.9);
  --shadow-primary:0 8px 24px -8px rgba(201,247,63,.45);
  --container:1280px;
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:88px; --sp-10:120px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color .2s ease,transform .2s ease,opacity .2s ease;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid rgba(201,247,63,.6);
  outline-offset:2px;
}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3{letter-spacing:-.01em;line-height:1.25;}
p{color:var(--text-2);}
::selection{background:rgba(201,247,63,.28);color:var(--text);}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
  white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-lg{padding:14px 32px;font-size:16px;}
.btn-primary{
  background:var(--primary);
  color:#0A0C0F;
  border-color:var(--primary);
}
.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);box-shadow:var(--shadow-primary);transform:translateY(-1px);}
.btn-primary:active{background:var(--primary-active);border-color:var(--primary-active);transform:translateY(0);box-shadow:none;}
.btn-primary:disabled{background:#2A323B;border-color:#2A323B;color:var(--text-3);cursor:not-allowed;box-shadow:none;transform:none;}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:var(--line-strong);
}
.btn-ghost:hover{border-color:var(--line-accent);color:var(--primary);transform:translateY(-1px);}
.btn-ghost:active{background:rgba(255,255,255,.04);transform:translateY(0);}
.btn-ghost:disabled{color:var(--text-3);border-color:var(--line);cursor:not-allowed;transform:none;}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
}
.btn-link:hover{color:var(--primary-hover);gap:10px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(10,12,15,.78);
  backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(10,12,15,.94);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  border:1px solid var(--line-accent);
  color:var(--primary);
  background:rgba(201,247,63,.06);
}
.brand-mark svg{width:19px;height:19px;display:block;}
.brand-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--text);
}
.brand-text b{color:var(--primary);font-weight:800;}
.nav-channels{
  display:flex;
  align-items:center;
  gap:6px;
  flex:1 1 auto;
}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  color:var(--text-2);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:38px;
  padding:0 14px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);
  background:rgba(255,255,255,.02);
  min-width:190px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search svg{width:16px;height:16px;color:var(--text-3);flex:0 0 auto;}
.nav-search input{
  border:0;
  background:transparent;
  color:var(--text);
  font-size:14px;
  width:100%;
  outline:none;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search:focus-within{
  border-color:var(--line-accent);
  box-shadow:0 0 0 2px rgba(201,247,63,.18);
}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  align-items:center;justify-content:center;
  border:1px solid var(--line-strong);
  border-radius:10px;
  color:var(--text);
}
.nav-toggle svg{width:18px;height:18px;}

/* ---------- 内页页头 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background-color:#10141A;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  opacity:.42;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(10,12,15,.35) 0%,rgba(10,12,15,.86) 62%,rgba(10,12,15,1) 100%);
}
.page-hero-inner{
  position:relative;
  z-index:2;
  padding:64px 0 56px;
  max-width:840px;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span[aria-current]{color:var(--text-2);}
.breadcrumb .sep{color:#39414B;}
.page-hero .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 14px;
  border:1px solid var(--line-accent);
  border-radius:var(--radius-badge);
  font-size:13px;
  color:var(--primary);
  background:rgba(201,247,63,.06);
  margin-bottom:18px;
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,50px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.12;
  color:var(--text);
}
.page-hero h1 em{
  font-style:normal;
  color:var(--primary);
}
.page-hero .hero-desc{
  margin-top:18px;
  font-size:16px;
  color:var(--text-2);
  max-width:680px;
}
.page-hero .hero-meta{
  margin-top:24px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-badge);
  font-size:12.5px;
  color:var(--text-2);
  transition:border-color .2s ease,color .2s ease;
}
.tag:hover{border-color:var(--line-accent);color:var(--primary);}
.tag-accent{border-color:rgba(56,225,208,.5);color:var(--accent);}
.tag-warm{border-color:rgba(255,106,43,.5);color:var(--secondary);}

/* ---------- 板块骨架 ---------- */
.section{
  padding:88px 0;
  border-bottom:1px solid var(--line);
}
.section-alt{background:var(--bg-block);}
.section:last-of-type{border-bottom:0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.section-head .head-left{max-width:720px;}
.section-title{
  font-size:clamp(24px,2.6vw,34px);
  font-weight:700;
  color:var(--text);
}
.section-sub{
  margin-top:10px;
  font-size:15px;
  color:var(--text-2);
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  white-space:nowrap;
}
.link-more:hover{color:var(--primary-hover);gap:10px;}

/* ---------- 非对称栅格：两列大卡 + 右侧榜单 ---------- */
.asym-grid{
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(0,1fr);
  gap:32px;
  align-items:start;
}
.feature-cards{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.feature-card{
  display:flex;
  flex-direction:column;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease,background-color .24s ease;
}
.feature-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-accent);
  background:var(--bg-card-hover);
  box-shadow:var(--shadow-2);
}
.feature-media{
  position:relative;
  aspect-ratio:16/9;
  background:#171D25;
  overflow:hidden;
}
.feature-media img{
  width:100%;height:100%;
  transition:transform .4s ease;
}
.feature-card:hover .feature-media img{transform:scale(1.03);}
.media-badge{
  position:absolute;
  top:12px;right:12px;
  padding:3px 10px;
  border:1px solid rgba(56,225,208,.55);
  border-radius:var(--radius-badge);
  font-size:12px;
  color:var(--accent);
  background:rgba(10,12,15,.72);
  backdrop-filter:blur(4px);
}
.feature-body{
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1 1 auto;
}
.feature-body h3{
  font-size:20px;
  font-weight:600;
  color:var(--text);
}
.feature-body p{
  font-size:14.5px;
  line-height:1.75;
  color:var(--text-2);
}
.meta-row{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  color:var(--text-3);
  margin-top:auto;
}
.meta-row .dot{color:#39414B;}

/* ---------- 右侧榜单 ---------- */
.rank-panel{
  background:var(--bg-block);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-1);
}
.rank-panel-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.rank-panel-head h3{font-size:17px;font-weight:700;color:var(--text);}
.rank-panel-head span{font-size:12px;color:var(--text-3);}
.rank-list{margin-top:8px;}
.rank-item{
  padding:14px 0;
  border-bottom:1px solid var(--line);
  transition:transform .2s ease;
}
.rank-item:last-child{border-bottom:0;padding-bottom:0;}
.rank-item:hover{transform:translateX(2px);}
.rank-line{
  display:flex;
  align-items:center;
  gap:12px;
}
.rank-no{
  font-size:16px;
  font-weight:800;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  min-width:26px;
}
.rank-name{
  font-size:14.5px;
  font-weight:600;
  color:var(--text);
  flex:1 1 auto;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.rank-val{
  font-size:13px;
  color:var(--secondary);
  font-weight:600;
}
.rank-bar{
  margin-top:10px;
  height:4px;
  border-radius:99px;
  background:rgba(255,255,255,.06);
  overflow:hidden;
}
.rank-bar i{
  display:block;
  height:100%;
  border-radius:99px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
}
.rank-note{
  margin-top:16px;
  font-size:12.5px;
  color:var(--text-3);
  line-height:1.7;
}

/* ---------- 阶段进度 ---------- */
.stage-panel{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:32px;
  box-shadow:var(--shadow-1);
}
.stage-track{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
  margin-top:28px;
}
.stage-step{
  position:relative;
  padding-top:20px;
  border-top:3px solid var(--line-strong);
}
.stage-step.is-done{border-top-color:var(--primary);}
.stage-step.is-current{border-top-color:var(--accent);}
.stage-step strong{
  display:block;
  font-size:15px;
  color:var(--text);
  font-weight:600;
}
.stage-step span{
  display:block;
  margin-top:6px;
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
}
.stage-step .step-date{
  display:inline-block;
  margin-bottom:8px;
  font-size:12px;
  color:var(--secondary);
  letter-spacing:.02em;
}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  margin-top:32px;
}
.stat-card{
  padding:20px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:rgba(255,255,255,.02);
  transition:border-color .2s ease,transform .2s ease;
}
.stat-card:hover{border-color:var(--line-accent);transform:translateY(-3px);}
.stat-num{
  font-size:30px;
  font-weight:800;
  color:var(--primary);
  line-height:1.1;
  letter-spacing:-.02em;
}
.stat-num small{font-size:14px;font-weight:600;color:var(--text-2);margin-left:4px;}
.stat-label{
  margin-top:8px;
  font-size:13.5px;
  color:var(--text-2);
}

/* ---------- 日历速览 ---------- */
.calendar-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.35fr);
  gap:32px;
  align-items:stretch;
}
.date-list{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--bg-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.date-item{
  display:flex;
  align-items:center;
  gap:16px;
  padding:18px 22px;
  border-bottom:1px solid var(--line);
  transition:background-color .2s ease,padding-left .2s ease;
}
.date-item:last-child{border-bottom:0;}
.date-item:hover{background:var(--bg-card-hover);padding-left:26px;}
.date-item .d-day{
  min-width:58px;
  font-size:13px;
  font-weight:700;
  color:var(--primary);
  letter-spacing:.02em;
}
.date-item .d-body{flex:1 1 auto;min-width:0;}
.date-item .d-body strong{
  display:block;
  font-size:15px;
  font-weight:600;
  color:var(--text);
}
.date-item .d-body span{
  display:block;
  margin-top:4px;
  font-size:13px;
  color:var(--text-3);
}
.date-item .d-flag{
  flex:0 0 auto;
  font-size:12px;
  color:var(--accent);
  border:1px solid rgba(56,225,208,.45);
  border-radius:var(--radius-badge);
  padding:2px 9px;
}
.big-media-card{
  position:relative;
  min-height:320px;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:#171D25;
  display:flex;
  align-items:flex-end;
}
.big-media-card img{
  position:absolute;
  inset:0;
  width:100%;height:100%;
  transition:transform .5s ease;
}
.big-media-card:hover img{transform:scale(1.03);}
.big-media-card::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(10,12,15,.12) 20%,rgba(10,12,15,.92) 100%);
}
.big-media-body{
  position:relative;
  z-index:2;
  padding:32px;
}
.big-media-body h3{
  font-size:22px;
  font-weight:700;
  color:var(--text);
  margin-bottom:10px;
}
.big-media-body p{
  font-size:14.5px;
  color:var(--text-2);
  max-width:520px;
}
.big-media-body .meta-row{margin-top:16px;}

/* ---------- FAQ ---------- */
.faq-list{
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:var(--bg-card);
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 24px;
  min-height:60px;
  cursor:pointer;
  list-style:none;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  transition:background-color .2s ease,color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--bg-card-hover);color:var(--primary);}
.faq-icon{
  flex:0 0 auto;
  width:20px;height:20px;
  position:relative;
  color:var(--primary);
  transition:transform .25s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:currentColor;
  border-radius:2px;
}
.faq-icon::before{left:0;right:0;top:9px;height:1.6px;}
.faq-icon::after{top:0;bottom:0;left:9px;width:1.6px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-answer{
  background:var(--paper);
  color:var(--paper-text);
  padding:20px 24px 24px;
  font-size:15px;
  line-height:1.85;
  margin:0 12px 16px;
  border-radius:var(--radius-img);
  border-left:3px solid var(--paper-link);
}
.faq-answer a{color:var(--paper-link);text-decoration:underline;}

/* ---------- 分页 ---------- */
.pagination{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  flex-wrap:wrap;
}
.page-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:40px;
  height:40px;
  padding:0 14px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);
  font-size:14px;
  color:var(--text-2);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.page-btn:hover{border-color:var(--line-accent);color:var(--primary);}
.page-btn.is-current{
  background:var(--primary);
  border-color:var(--primary);
  color:#0A0C0F;
  font-weight:700;
}
.page-btn.is-disabled{color:var(--text-3);border-color:var(--line);cursor:not-allowed;}

/* ---------- 收尾 CTA ---------- */
.cta-band{
  border-top:1px solid var(--primary);
  border-bottom:1px solid var(--primary);
  background:var(--bg-block);
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:48px 0;
  flex-wrap:wrap;
}
.cta-text h2{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:700;
  color:var(--text);
}
.cta-text p{margin-top:10px;font-size:15px;color:var(--text-2);}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-block);
  border-top:1px solid var(--line);
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-col h3{
  font-size:14px;
  font-weight:700;
  color:var(--primary);
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{
  font-size:14px;
  color:var(--text-2);
  display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-col ul li a:hover{color:var(--primary);transform:translateX(2px);}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
}
.footer-about{
  font-size:14px;
  line-height:1.85;
  color:var(--text-3);
  max-width:360px;
}
.footer-contact li{
  font-size:14px;
  color:var(--text-2);
  margin-bottom:10px;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:22px 0 30px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  .asym-grid{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:24px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .nav-search{min-width:150px;}
}
@media screen and (max-width:1023px){
  .nav-search{display:none;}
  .asym-grid{grid-template-columns:minmax(0,1fr);}
  .calendar-grid{grid-template-columns:minmax(0,1fr);}
  .stage-track{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media screen and (max-width:899px){
  .section{padding:64px 0;}
  .header-inner{height:64px;gap:14px;}
  .nav-toggle{display:inline-flex;}
  .nav-channels{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:rgba(10,12,15,.98);
    border-bottom:1px solid var(--line);
    padding:8px 24px 18px;
    display:none;
  }
  .nav-channels.is-open{display:flex;}
  .nav-link{padding:14px 4px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0;}
  .nav-link::after{display:none;}
  .nav-link.is-active{padding-left:12px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-about{max-width:none;}
  .cta-inner{padding:40px 0;}
}
@media screen and (max-width:639px){
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:56px 0;}
  .page-hero-inner{padding:44px 0 40px;}
  .page-hero .hero-desc{font-size:15px;}
  .feature-cards{grid-template-columns:minmax(0,1fr);}
  .feature-body h3{font-size:18px;}
  .stage-track{grid-template-columns:minmax(0,1fr);}
  .stat-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:36px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .brand-text{font-size:15.5px;}
  .rank-panel{padding:20px;}
  .stage-panel{padding:22px;}
}

/* roulang page: category3 */
:root{
  --bg:#0A0C0F;
  --bg-2:#10141A;
  --card:#171D25;
  --card-hover:#1F2731;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#C9F73F;
  --primary-hover:#D8FF63;
  --primary-active:#A9D42B;
  --accent:#FF6A2B;
  --spark:#38E1D0;
  --text:#F4F7F3;
  --text-2:#A7B2BD;
  --text-3:#6E7A87;
  --paper:#F6F6F1;
  --paper-text:#14181D;
  --paper-link:#6E8F0F;
  --r-card:16px;
  --r-lg:20px;
  --r-img:14px;
  --r-pill:999px;
  --r-input:12px;
  --r-badge:6px;
  --shadow:0 8px 24px -16px rgba(0,0,0,.8);
  --shadow-hover:0 18px 40px -20px rgba(0,0,0,.9);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,dl,dd,figure,blockquote{margin:0;padding:0}
html,body{background:var(--bg)}
body{
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--text);
  font-size:16px;
  line-height:1.9;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
svg{display:block}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* 容器 */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}

/* 通用按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 22px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:background .22s ease,border-color .22s ease,color .22s ease,transform .22s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#12180A;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);transform:translateY(-1px);box-shadow:0 8px 24px -8px rgba(201,247,63,.45)}
.btn-primary:active{background:var(--primary-active);border-color:var(--primary-active);transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:rgba(201,247,63,.55);color:var(--primary);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0);border-color:var(--primary-active);color:var(--primary-active)}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible,label:focus-visible{
  outline:2px solid rgba(201,247,63,.6);outline-offset:2px;
}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,12,15,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:20px;height:74px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  color:var(--primary);border:1px solid rgba(201,247,63,.4);background:rgba(201,247,63,.08);
  transition:background .22s ease,border-color .22s ease;
}
.brand-mark svg{width:20px;height:20px}
.brand:hover .brand-mark{background:rgba(201,247,63,.16);border-color:rgba(201,247,63,.7)}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text)}
.brand-text b{color:var(--primary);font-weight:700}

.nav-channels{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;padding:10px 14px;font-size:15px;color:var(--text-2);border-radius:var(--r-pill);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link:active{background:rgba(255,255,255,.09)}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--primary);
}
.nav-toggle-check{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.nav-toggle-btn{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer;transition:border-color .2s ease}
.nav-toggle-btn:hover{border-color:rgba(201,247,63,.5)}
.nav-toggle-btn .bar{width:16px;height:1.5px;background:var(--text);border-radius:2px}

.header-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-pill{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 16px;
  border:1px solid var(--line-strong);border-radius:var(--r-pill);background:rgba(255,255,255,.02);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-pill:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(201,247,63,.18)}
.search-pill svg{width:16px;height:16px;color:var(--text-3);flex:0 0 16px}
.search-pill input{
  width:132px;background:transparent;border:0;box-shadow:none;outline:none;
  font-size:14px;color:var(--text);height:auto;margin:0;padding:0;
}
.search-pill input::placeholder{color:var(--text-3)}
.icon-btn{
  display:none;width:42px;height:42px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);background:transparent;color:var(--text-2);
  align-items:center;justify-content:center;transition:border-color .2s ease,color .2s ease;
}
.icon-btn:hover{border-color:rgba(201,247,63,.5);color:var(--primary)}
.icon-btn svg{width:17px;height:17px}

/* 页头 */
.page-head{
  position:relative;padding:76px 0 60px;overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-head::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,15,.62) 0%,rgba(10,12,15,.86) 62%,var(--bg) 100%);
}
.page-head .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.breadcrumb a{color:var(--text-2);transition:color .2s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-3)}
.breadcrumb .current{color:var(--text)}
.page-title{
  font-size:clamp(30px,4.2vw,48px);line-height:1.18;font-weight:800;letter-spacing:-.02em;
  max-width:900px;
}
.page-title em{font-style:normal;color:var(--primary)}
.page-sub{margin-top:16px;font-size:16px;color:var(--text-2);max-width:720px}
.page-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.chip{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-badge);
  border:1px solid var(--line-strong);color:var(--text-2);font-size:12.5px;line-height:1;
}
.chip-spark{border-color:rgba(56,225,208,.4);color:var(--spark)}
.chip-accent{border-color:rgba(255,106,43,.4);color:var(--accent)}

/* 板块 */
.section{padding:88px 0}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-title{font-size:clamp(23px,2.8vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.section-desc{margin-top:12px;font-size:15px;color:var(--text-2);max-width:720px}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;white-space:nowrap;transition:gap .2s ease,color .2s ease}
.link-more:hover{gap:10px;color:var(--primary-hover)}
.link-more svg{width:15px;height:15px}

/* 步骤时间线 */
.steps{max-width:920px;margin:0 auto;display:flex;flex-direction:column}
.step{display:grid;grid-template-columns:90px 1fr;gap:22px}
.step-rail{display:flex;flex-direction:column;align-items:center;padding-top:14px}
.step-num{
  font-size:38px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.5px rgba(201,247,63,.85);
  font-variant-numeric:tabular-nums;
}
@supports not ((-webkit-text-stroke:1px #000)){
  .step-num{color:var(--primary)}
}
.step-rail::after{
  content:"";flex:1;width:1px;margin-top:14px;
  background:linear-gradient(180deg,rgba(201,247,63,.5),rgba(255,255,255,.05));
}
.step:last-child .step-rail::after{display:none}
.step-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 28px;margin-bottom:20px;box-shadow:var(--shadow);
  transition:background .26s ease,border-color .26s ease,transform .26s ease,box-shadow .26s ease;
}
.step-card:hover{background:var(--card-hover);border-color:rgba(201,247,63,.4);transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.step-card h3{font-size:20px;font-weight:600;line-height:1.45;margin-bottom:10px}
.step-card p{font-size:15px;color:var(--text-2);line-height:1.85}
.step-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}

/* 非对称网格 */
.split-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.feature-card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow);
  transition:border-color .26s ease,transform .26s ease,box-shadow .26s ease,background .26s ease;
}
.feature-card:hover{border-color:rgba(201,247,63,.4);transform:translateY(-4px);box-shadow:var(--shadow-hover);background:var(--card-hover)}
.feature-media{aspect-ratio:16/9;background:var(--card);overflow:hidden}
.feature-media img{width:100%;height:100%;transition:transform .4s ease}
.feature-card:hover .feature-media img{transform:scale(1.03)}
.feature-body{padding:26px 28px 30px}
.feature-body h3{font-size:21px;font-weight:600;margin-bottom:12px}
.feature-body p{font-size:15px;color:var(--text-2);line-height:1.85}
.feature-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.feature-list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--text-2);line-height:1.7}
.feature-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;
  border:1.5px solid var(--primary);
}
.mini-stack{display:grid;gap:20px}
.mini-card{
  display:grid;grid-template-columns:58px 1fr;gap:18px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--shadow);
  transition:background .26s ease,border-color .26s ease,transform .26s ease,box-shadow .26s ease;
}
.mini-card:hover{background:var(--card-hover);border-color:rgba(201,247,63,.4);transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.mini-icon{
  width:58px;height:58px;border-radius:var(--r-img);display:grid;place-items:center;
  border:1px solid rgba(56,225,208,.35);color:var(--spark);background:rgba(56,225,208,.06);
}
.mini-icon svg{width:22px;height:22px}
.mini-card h3{font-size:17px;font-weight:600;margin-bottom:6px}
.mini-card p{font-size:14px;color:var(--text-2);line-height:1.7}

/* 对照表 */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--card);
  box-shadow:var(--shadow);
}
table.compare{width:100%;border-collapse:collapse;margin:0;background:transparent}
table.compare caption{
  caption-side:top;text-align:left;padding:18px 22px;font-size:14px;color:var(--text-3);
  border-bottom:1px solid var(--line);
}
table.compare th,table.compare td{
  padding:16px 22px;text-align:left;font-size:14.5px;line-height:1.75;border-bottom:1px solid var(--line);
}
table.compare thead th{background:rgba(255,255,255,.04);color:var(--primary);font-weight:600;font-size:14px}
table.compare tbody th{color:var(--text);font-weight:600;width:22%}
table.compare tbody td{color:var(--text-2)}
table.compare tbody tr:last-child th,table.compare tbody tr:last-child td{border-bottom:0}
table.compare tbody tr:hover td,table.compare tbody tr:hover th{background:rgba(255,255,255,.03)}

/* FAQ */
.faq-list{max-width:900px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:62px;padding:16px 4px;font-size:16px;font-weight:600;color:var(--text);
  cursor:pointer;list-style:none;transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px;color:var(--primary)}
.faq-icon::before{content:"";position:absolute;left:50%;top:50%;width:13px;height:1.5px;background:currentColor;transform:translate(-50%,-50%)}
.faq-icon::after{content:"";position:absolute;left:50%;top:50%;width:1.5px;height:13px;background:currentColor;transform:translate(-50%,-50%);transition:transform .25s ease,opacity .25s ease}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-answer{
  background:var(--paper);color:var(--paper-text);border-radius:var(--r-input);
  padding:18px 22px;font-size:15px;line-height:1.85;margin:4px 0 18px;
}
.faq-answer strong{color:#0F1216}
.faq-answer a{color:var(--paper-link);text-decoration:underline}

/* 分页外观 */
.pager{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:8px}
.pager a,.pager span{
  display:inline-flex;align-items:center;justify-content:center;height:40px;min-width:40px;
  padding:0 18px;border-radius:var(--r-pill);border:1px solid var(--line-strong);
  color:var(--text-2);font-size:14px;transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease;
}
.pager a:hover{border-color:rgba(201,247,63,.55);color:var(--primary);transform:translateY(-1px)}
.pager a:active{transform:translateY(0)}
.pager .is-current{background:var(--primary);border-color:var(--primary);color:#12180A;font-weight:700}

/* 收尾 CTA */
.cta-bar{
  position:relative;overflow:hidden;
  border:1px solid rgba(201,247,63,.55);border-radius:var(--r-lg);
  background:rgba(201,247,63,.05);
  padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-bar::before{
  content:"";position:absolute;top:0;left:40px;right:40px;height:1px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
}
.cta-title{font-size:clamp(21px,2.4vw,27px);font-weight:700;line-height:1.35}
.cta-text{margin-top:10px;font-size:15px;color:var(--text-2);max-width:640px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto}

/* 页脚 */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px}
.footer-brand .brand-text{font-size:16px}
.footer-about{font-size:14px;color:var(--text-2);line-height:1.85;max-width:360px}
.footer-col h3{font-size:14px;color:var(--primary);font-weight:600;margin-bottom:18px;letter-spacing:.01em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--primary);transform:translateX(2px)}
.footer-contact li{font-size:14px;color:var(--text-2);line-height:1.7}
.footer-bottom{
  margin-top:56px;padding:22px 0;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 a{color:var(--text-2);transition:color .2s ease}
.footer-bottom a:hover{color:var(--primary)}

/* 响应式 */
@media (max-width:1199px){
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:1 / -1}
}
@media (max-width:899px){
  .header-inner{height:66px;gap:12px}
  .nav-toggle-btn{display:inline-flex;order:3}
  .nav-channels{
    position:absolute;left:0;right:0;top:100%;display:none;
    flex-direction:column;align-items:stretch;gap:2px;margin:0;
    background:rgba(10,12,15,.98);border-bottom:1px solid var(--line);
    padding:12px 16px 20px;box-shadow:0 18px 40px -20px rgba(0,0,0,.9);
  }
  .nav-toggle-check:checked ~ .nav-channels{display:flex}
  .nav-link{padding:13px 14px;border-radius:12px;font-size:15px}
  .nav-link.is-active::after{display:none}
  .nav-link.is-active{background:rgba(201,247,63,.1)}
  .header-tools{gap:10px}
  .search-pill{display:none}
  .icon-btn{display:inline-flex}
  .header-tools .btn-ghost{display:none}
  .section{padding:64px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .split-grid{grid-template-columns:1fr}
  .page-head{padding:56px 0 44px}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:28px 24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:1 / -1}
}
@media (max-width:639px){
  .container{padding:0 16px}
  body{font-size:15.5px}
  .brand-text{font-size:15.5px}
  .page-title{font-size:29px}
  .section{padding:56px 0}
  .section-title{font-size:22px}
  .step{grid-template-columns:1fr;gap:12px}
  .step-rail{flex-direction:row;align-items:center;gap:12px;padding-top:0}
  .step-rail::after{display:none}
  .step-num{font-size:28px;-webkit-text-stroke-width:1.2px}
  .step-card{padding:22px 20px;margin-bottom:14px}
  .step-card h3{font-size:17.5px}
  .mini-card{grid-template-columns:48px 1fr;gap:14px;padding:18px}
  .mini-icon{width:48px;height:48px}
  .feature-body{padding:22px 20px 26px}
  table.compare th,table.compare td{padding:13px 14px;font-size:13.5px}
  table.compare tbody th{width:34%}
  .cta-bar{padding:24px 18px}
  .faq-answer{padding:16px 16px;font-size:14.5px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
  --bg:#0A0C0F;
  --surface:#10141A;
  --card:#171D25;
  --card-hover:#1F2731;
  --primary:#C9F73F;
  --primary-hover:#D8FF63;
  --primary-active:#A9D42B;
  --accent:#FF6A2B;
  --dot:#38E1D0;
  --text:#F4F7F3;
  --text-2:#A7B2BD;
  --text-3:#6E7A87;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --line-primary:rgba(201,247,63,.4);
  --paper:#F6F6F1;
  --paper-text:#14181D;
  --paper-link:#6E8F0F;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-img:14px;
  --radius-input:12px;
  --radius-badge:6px;
  --shadow-sm:0 8px 24px -16px rgba(0,0,0,.8);
  --shadow-lg:0 18px 40px -20px rgba(0,0,0,.9);
  --shadow-primary:0 8px 24px -8px rgba(201,247,63,.45);
  --s1:4px;--s2:8px;--s3:12px;--s4:16px;--s5:24px;--s6:32px;--s7:48px;--s8:64px;--s9:88px;--s10:120px;
}

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

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

body{
  margin:0;
  padding:0;
  background:#0A0C0F;
  background:var(--bg);
  color:#F4F7F3;
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.7;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

h1,h2,h3,h4,h5,h6{
  margin:0;
  font-weight:700;
  line-height:1.25;
  letter-spacing:-0.01em;
}

p{margin:0}

ul,ol{
  margin:0;
  padding:0;
  list-style:none;
}

img{
  display:block;
  max-width:100%;
  height:auto;
}

a{
  color:inherit;
  text-decoration:none;
  background:transparent;
}

button,
input,
textarea,
select{
  font-family:inherit;
  font-size:inherit;
  line-height:inherit;
}

button{
  margin:0;
  padding:0;
  border:0;
  background:none;
  color:inherit;
  cursor:pointer;
  -webkit-appearance:none;
  appearance:none;
}

input{
  margin:0;
}

:focus-visible{
  outline:2px solid rgba(201,247,63,.6);
  outline-offset:2px;
  border-radius:4px;
}

.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 24px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(10,12,15,.74);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease;
}

.site-header.is-scrolled{
  background:rgba(10,12,15,.95);
  border-bottom-color:var(--line);
}

.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:72px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}

.brand-mark{
  width:34px;
  height:34px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1px solid var(--line-strong);
  background:rgba(201,247,63,.08);
  color:var(--primary);
  transition:border-color .24s ease,background .24s ease;
}

.brand-mark svg{
  width:19px;
  height:19px;
}

.brand:hover .brand-mark{
  border-color:var(--line-primary);
  background:rgba(201,247,63,.14);
}

.brand-text{
  font-size:17px;
  font-weight:700;
  color:var(--text);
  white-space:nowrap;
  letter-spacing:.01em;
}

.brand-text b{
  color:var(--primary);
  font-weight:700;
}

.nav-channels{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:6px;
}

.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:999px;
  white-space:nowrap;
  transition:color .22s ease,background .22s ease;
}

.nav-link:hover,
.nav-link:focus-visible{
  color:var(--text);
  background:rgba(255,255,255,.05);
}

.nav-link.is-active{
  color:var(--primary);
}

.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:22px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:translateX(-50%);
}

.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}

.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:38px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  transition:border-color .24s ease,box-shadow .24s ease;
}

.nav-search:focus-within{
  border-color:var(--line-primary);
  box-shadow:0 0 0 3px rgba(201,247,63,.12);
}

.nav-search svg{
  width:16px;
  height:16px;
  color:var(--text-3);
  flex:0 0 auto;
}

.nav-search input[type="search"]{
  width:150px;
  border:0;
  background:transparent;
  color:var(--text);
  font-size:14px;
  outline:none;
  box-shadow:none;
}

.nav-search input[type="search"]::placeholder{
  color:var(--text-3);
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:40px;
  padding:0 20px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  transition:background .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}

.btn-primary{
  background:var(--primary);
  color:#0A0C0F;
}

.btn-primary:hover{
  background:var(--primary-hover);
  box-shadow:var(--shadow-primary);
  transform:translateY(-1px);
}

.btn-primary:active{
  background:var(--primary-active);
  transform:translateY(0);
  box-shadow:none;
}

.btn-ghost{
  border-color:var(--line-strong);
  color:var(--text);
  background:rgba(255,255,255,.02);
}

.btn-ghost:hover{
  border-color:var(--line-primary);
  color:var(--primary);
  background:rgba(201,247,63,.06);
}

.btn-ghost:active{
  background:rgba(201,247,63,.12);
}

.btn:disabled{
  opacity:.45;
  cursor:not-allowed;
  transform:none;
  box-shadow:none;
}

.btn-lg{
  height:46px;
  padding:0 26px;
  font-size:15px;
}

.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  border:1px solid var(--line-strong);
  color:var(--text);
}

.nav-toggle svg{
  width:18px;
  height:18px;
}

.nav-toggle:hover{
  border-color:var(--line-primary);
  color:var(--primary);
}

/* ============ 页头 ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:#10141A;
}

.page-hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.34;
}

.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(10,12,15,.35) 0%,rgba(10,12,15,.72) 62%,#0A0C0F 100%);
  pointer-events:none;
}

.page-hero .track-arc{
  position:absolute;
  right:-140px;
  bottom:-230px;
  width:560px;
  height:560px;
  border:1px solid rgba(201,247,63,.16);
  border-radius:50%;
  pointer-events:none;
}

.page-hero-inner{
  position:relative;
  z-index:2;
  min-height:262px;
  padding:56px 0 52px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:16px;
}

.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
}

.breadcrumb a{
  color:var(--text-2);
  transition:color .2s ease;
}

.breadcrumb a:hover{
  color:var(--primary);
}

.breadcrumb .sep{
  color:var(--text-3);
}

.breadcrumb .current{
  color:var(--primary);
}

.page-title{
  font-size:clamp(30px,3.8vw,46px);
  font-weight:800;
  letter-spacing:-0.02em;
  line-height:1.18;
  max-width:900px;
}

.page-sub{
  font-size:16px;
  color:var(--text-2);
  max-width:620px;
}

.page-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:4px;
}

.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 10px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-badge);
  font-size:12px;
  color:var(--text-2);
  background:rgba(255,255,255,.03);
}

.tag-accent{
  border-color:rgba(56,225,208,.42);
  color:var(--dot);
}

/* ============ 通用板块 ============ */
.section{
  padding:88px 0;
}

.section-tight{
  padding:64px 0;
}

.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}

.section-head-main{
  max-width:720px;
}

.section-title{
  font-size:clamp(24px,2.7vw,34px);
  font-weight:700;
  letter-spacing:-0.015em;
}

.section-desc{
  margin-top:10px;
  font-size:15px;
  color:var(--text-2);
  max-width:640px;
}

.section-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  white-space:nowrap;
  transition:gap .22s ease,color .22s ease;
}

.section-link svg{
  width:16px;
  height:16px;
}

.section-link:hover{
  gap:10px;
  color:var(--primary-hover);
}

/* 浅底导读面板 */
.intro-panel{
  background:var(--paper);
  color:var(--paper-text);
  border-radius:var(--radius-lg);
  padding:40px 44px;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:44px;
  box-shadow:var(--shadow-lg);
}

.intro-panel h2{
  font-size:22px;
  color:var(--paper-text);
  margin-bottom:16px;
}

.intro-panel p{
  font-size:16px;
  line-height:1.9;
  color:#2C333B;
  margin-bottom:16px;
}

.intro-panel p:last-child{
  margin-bottom:0;
}

.intro-panel a{
  color:var(--paper-link);
  font-weight:600;
  border-bottom:1px solid rgba(110,143,15,.35);
  transition:border-color .2s ease;
}

.intro-panel a:hover{
  border-bottom-color:var(--paper-link);
}

.intro-facts{
  display:grid;
  gap:14px;
  align-content:start;
}

.intro-fact{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:16px 18px;
  border-radius:14px;
  background:rgba(20,24,29,.05);
  border:1px solid rgba(20,24,29,.08);
}

.intro-fact svg{
  width:18px;
  height:18px;
  flex:0 0 auto;
  margin-top:3px;
  color:var(--paper-link);
}

.intro-fact strong{
  display:block;
  font-size:15px;
  margin-bottom:2px;
}

.intro-fact span{
  font-size:13.5px;
  color:#4A525B;
  line-height:1.7;
}

/* 封面卡网格 */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}

.cover-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease,background .28s ease;
}

.cover-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-primary);
  background:var(--card-hover);
  box-shadow:var(--shadow-lg);
}

.cover-media{
  position:relative;
  aspect-ratio:16/9;
  background:#171D25;
  overflow:hidden;
}

.cover-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .42s ease;
}

.cover-card:hover .cover-media img{
  transform:scale(1.03);
}

.cover-media .badge{
  position:absolute;
  top:12px;
  right:12px;
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 9px;
  border-radius:var(--radius-badge);
  border:1px solid rgba(56,225,208,.5);
  background:rgba(10,12,15,.72);
  color:var(--dot);
  font-size:12px;
  font-weight:600;
}

.cover-body{
  padding:18px 18px 22px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1 1 auto;
}

.cover-body h3{
  font-size:18px;
  font-weight:600;
}

.cover-body p{
  font-size:14.5px;
  line-height:1.75;
  color:var(--text-2);
}

.card-meta{
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:12.5px;
  color:var(--text-3);
}

.card-meta .link-mini{
  display:inline-flex;
  align-items:center;
  gap:4px;
  color:var(--primary);
  font-weight:600;
  font-size:13px;
}

.card-meta .link-mini svg{
  width:14px;
  height:14px;
  transition:transform .22s ease;
}

.cover-card:hover .card-meta .link-mini svg{
  transform:translateX(3px);
}

/* 非对称网格 */
.split-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:24px;
  align-items:stretch;
}

.feature-large{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:#10141A;
  min-height:420px;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  transition:border-color .28s ease,box-shadow .28s ease;
}

.feature-large:hover{
  border-color:var(--line-primary);
  box-shadow:var(--shadow-lg);
}

.feature-large-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  opacity:.42;
  transition:transform .5s ease;
}

.feature-large:hover .feature-large-bg{
  transform:scale(1.03);
}

.feature-large::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(10,12,15,.15) 0%,rgba(10,12,15,.82) 68%,#0A0C0F 100%);
}

.feature-large-body{
  position:relative;
  z-index:2;
  padding:32px;
  display:flex;
  flex-direction:column;
  gap:12px;
}

.feature-large-body h3{
  font-size:clamp(20px,2.1vw,26px);
}

.feature-large-body p{
  font-size:15px;
  color:var(--text-2);
  max-width:520px;
}

.feature-large-body .tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:2px;
}

.stack-list{
  display:grid;
  grid-template-rows:repeat(3,1fr);
  gap:16px;
}

.stack-item{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:16px;
  align-items:center;
  padding:20px 22px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  transition:transform .26s ease,border-color .26s ease,background .26s ease,box-shadow .26s ease;
}

.stack-item:hover{
  transform:translateY(-3px);
  border-color:var(--line-primary);
  background:var(--card-hover);
  box-shadow:var(--shadow-sm);
}

.stack-icon{
  width:56px;
  height:56px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  border:1px solid var(--line-strong);
  background:rgba(201,247,63,.07);
  color:var(--primary);
}

.stack-icon svg{
  width:22px;
  height:22px;
}

.stack-item h3{
  font-size:17px;
  font-weight:600;
  margin-bottom:4px;
}

.stack-item p{
  font-size:14px;
  color:var(--text-2);
  line-height:1.7;
}

/* 数据条 */
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
}

.stat{
  background:var(--surface);
  padding:28px 24px;
  transition:background .26s ease;
}

.stat:hover{
  background:var(--card);
}

.stat-num{
  font-size:34px;
  font-weight:800;
  color:var(--primary);
  line-height:1.1;
}

.stat-num .unit{
  font-size:16px;
  font-weight:600;
  margin-left:2px;
}

.stat-label{
  margin-top:8px;
  font-size:14.5px;
  color:var(--text);
  font-weight:600;
}

.stat-note{
  margin-top:4px;
  font-size:12.5px;
  color:var(--text-3);
}

/* 流程 */
.step-list{
  display:grid;
  gap:16px;
}

.step{
  display:grid;
  grid-template-columns:72px 1fr auto;
  gap:22px;
  align-items:center;
  padding:26px 28px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  transition:border-color .26s ease,background .26s ease,transform .26s ease;
}

.step:hover{
  border-color:var(--line-primary);
  background:var(--card-hover);
  transform:translateX(3px);
}

.step-num{
  font-size:30px;
  font-weight:800;
  color:transparent;
  -webkit-text-stroke:1px rgba(201,247,63,.75);
  letter-spacing:-0.02em;
}

.step-body h3{
  font-size:19px;
  font-weight:600;
  margin-bottom:6px;
}

.step-body p{
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.75;
}

.step-flag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 10px;
  border-radius:var(--radius-badge);
  border:1px solid var(--line-strong);
  font-size:12px;
  color:var(--text-3);
  white-space:nowrap;
}

/* 场景两列 */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}

.scene-card{
  padding:26px 28px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--surface);
  transition:border-color .26s ease,background .26s ease;
}

.scene-card:hover{
  border-color:var(--line-primary);
  background:var(--card);
}

.scene-card h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:10px;
  display:flex;
  align-items:center;
  gap:10px;
}

.scene-card h3 .dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--dot);
  flex:0 0 auto;
  box-shadow:0 0 0 3px rgba(56,225,208,.16);
}

.scene-card p{
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.8;
}

.scene-card ul{
  margin-top:14px;
  display:grid;
  gap:8px;
}

.scene-card li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--text-2);
}

.scene-card li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:8px;
  height:1.5px;
  background:var(--primary);
}

/* FAQ */
.faq-list{
  display:grid;
  gap:12px;
}

.faq-item{
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--surface);
  overflow:hidden;
  transition:border-color .26s ease;
}

.faq-item:hover{
  border-color:var(--line-strong);
}

.faq-item.is-open{
  border-color:var(--line-primary);
}

.faq-q{
  width:100%;
  min-height:62px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:16px 22px;
  font-size:16px;
  font-weight:600;
  text-align:left;
  color:var(--text);
  transition:color .22s ease;
}

.faq-q:hover{
  color:var(--primary);
}

.faq-icon{
  position:relative;
  width:20px;
  height:20px;
  flex:0 0 auto;
}

.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--primary);
  border-radius:2px;
  transition:transform .3s ease,opacity .3s ease;
}

.faq-icon::before{
  left:0;
  top:9px;
  width:20px;
  height:1.6px;
}

.faq-icon::after{
  left:9px;
  top:0;
  width:1.6px;
  height:20px;
}

.faq-item.is-open .faq-icon::after{
  transform:rotate(90deg);
  opacity:0;
}

.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .34s ease;
  background:var(--paper);
  color:var(--paper-text);
}

.faq-item.is-open .faq-a{
  max-height:340px;
}

.faq-a-inner{
  padding:18px 22px 20px;
  font-size:15px;
  line-height:1.85;
  color:#2C333B;
}

/* 分页 */
.pagination{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  margin-top:56px;
  flex-wrap:wrap;
}

.page-link{
  min-width:40px;
  height:40px;
  padding:0 14px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  border:1px solid var(--line);
  font-size:14px;
  color:var(--text-2);
  transition:border-color .22s ease,color .22s ease,background .22s ease;
}

.page-link:hover{
  border-color:var(--line-primary);
  color:var(--primary);
  background:rgba(201,247,63,.06);
}

.page-link.is-current{
  background:var(--primary);
  border-color:transparent;
  color:#0A0C0F;
  font-weight:700;
}

/* 收尾 CTA */
.cta-band{
  border:1px solid var(--line-primary);
  border-radius:var(--radius-lg);
  background:rgba(201,247,63,.05);
  padding:40px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}

.cta-band h2{
  font-size:clamp(20px,2.2vw,26px);
  margin-bottom:8px;
}

.cta-band p{
  font-size:14.5px;
  color:var(--text-2);
  max-width:560px;
}

.cta-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}

/* 页脚 */
.site-footer{
  margin-top:88px;
  background:var(--surface);
  border-top:1px solid var(--line);
}

.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding:64px 0 40px;
}

.footer-col h3{
  font-size:14px;
  color:var(--primary);
  font-weight:600;
  margin-bottom:16px;
  letter-spacing:.02em;
}

.footer-col ul{
  display:grid;
  gap:10px;
}

.footer-col li{
  font-size:14px;
  color:var(--text-2);
}

.footer-col a{
  display:inline-block;
  font-size:14px;
  color:var(--text-2);
  transition:color .22s ease,transform .22s ease;
}

.footer-col a:hover{
  color:var(--primary);
  transform:translateX(2px);
}

.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}

.footer-brand .brand-mark{
  width:32px;
  height:32px;
}

.footer-brand .brand-text{
  font-size:16px;
}

.footer-about{
  font-size:14px;
  line-height:1.85;
  color:var(--text-2);
  max-width:360px;
}

.footer-contact li{
  color:var(--text-2);
}

.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 34px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}

.footer-bottom a{
  color:var(--text-2);
  transition:color .22s ease;
}

.footer-bottom a:hover{
  color:var(--primary);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-link{
    padding:9px 11px;
    font-size:14.5px;
  }

  .nav-search input[type="search"]{
    width:110px;
  }

  .card-grid{
    grid-template-columns:repeat(2,1fr);
  }

  .footer-grid{
    grid-template-columns:1.4fr 1fr 1fr;
    gap:32px;
  }

  .footer-col:last-child{
    grid-column:1 / -1;
    max-width:420px;
  }
}

@media (max-width:899px){
  .container{
    padding:0 20px;
  }

  .header-inner{
    height:64px;
    gap:12px;
  }

  .nav-toggle{
    display:inline-flex;
  }

  .nav-channels{
    position:absolute;
    top:64px;
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    margin:0;
    padding:12px 20px 18px;
    background:rgba(15,19,26,.98);
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-lg);
  }

  body.nav-open .nav-channels{
    display:flex;
  }

  .nav-link{
    padding:12px 10px;
    font-size:15px;
    border-radius:10px;
  }

  .nav-link.is-active::after{
    display:none;
  }

  .nav-link.is-active{
    background:rgba(201,247,63,.08);
  }

  .nav-search{
    display:none;
  }

  .btn{
    height:38px;
    padding:0 16px;
    font-size:13.5px;
  }

  .page-hero-inner{
    min-height:auto;
    padding:44px 0 40px;
  }

  .page-hero .track-arc{
    width:360px;
    height:360px;
    right:-160px;
    bottom:-180px;
  }

  .section{
    padding:64px 0;
  }

  .section-head{
    flex-direction:column;
    align-items:flex-start;
    gap:14px;
    margin-bottom:28px;
  }

  .intro-panel{
    grid-template-columns:1fr;
    gap:28px;
    padding:30px 26px;
  }

  .split-grid{
    grid-template-columns:1fr;
  }

  .feature-large{
    min-height:340px;
  }

  .stack-list{
    grid-template-rows:auto;
  }

  .stat-row{
    grid-template-columns:repeat(2,1fr);
  }

  .step{
    grid-template-columns:52px 1fr;
    gap:16px;
    padding:22px 20px;
  }

  .step-flag{
    grid-column:2;
    justify-self:start;
  }

  .scene-grid{
    grid-template-columns:1fr;
  }

  .cta-band{
    flex-direction:column;
    align-items:flex-start;
    gap:24px;
    padding:30px 26px;
  }

  .cta-actions{
    flex-wrap:wrap;
  }

  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:28px;
    padding:48px 0 32px;
  }

  .footer-col:last-child{
    grid-column:1 / -1;
  }
}

@media (max-width:639px){
  .container{
    padding:0 16px;
  }

  .brand-text{
    font-size:15.5px;
  }

  .brand-mark{
    width:30px;
    height:30px;
  }

  .btn-primary.header-cta{
    display:none;
  }

  .page-title{
    font-size:30px;
  }

  .section-title{
    font-size:24px;
  }

  .card-grid{
    grid-template-columns:1fr;
  }

  .cover-body h3{
    font-size:17px;
  }

  .stat-row{
    grid-template-columns:1fr;
  }

  .stat{
    padding:22px 20px;
  }

  .stat-num{
    font-size:28px;
  }

  .step{
    grid-template-columns:1fr;
    gap:10px;
  }

  .step-flag{
    grid-column:1;
  }

  .step-num{
    font-size:24px;
  }

  .faq-q{
    font-size:15px;
    padding:14px 16px;
  }

  .faq-a-inner{
    padding:16px;
    font-size:14.5px;
  }

  .feature-large-body{
    padding:24px 20px;
  }

  .cta-actions{
    width:100%;
  }

  .cta-actions .btn{
    flex:1 1 auto;
  }

  .footer-grid{
    grid-template-columns:1fr;
  }

  .footer-bottom{
    flex-direction:column;
    align-items:flex-start;
  }
}

/* roulang page: category4 */
:root{
  --bg:#0A0C0F;
  --bg-2:#10141A;
  --card:#171D25;
  --card-2:#1F2731;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.16);
  --line-hot:rgba(201,247,63,.4);
  --primary:#C9F73F;
  --primary-h:#D8FF63;
  --primary-a:#A9D42B;
  --secondary:#FF6A2B;
  --accent:#38E1D0;
  --text:#F4F7F3;
  --text-2:#A7B2BD;
  --text-3:#6E7A87;
  --paper:#F6F6F1;
  --paper-text:#14181D;
  --paper-link:#6E8F0F;
  --r-card:16px;
  --r-lg:20px;
  --r-img:14px;
  --r-pill:999px;
  --r-input:12px;
  --r-badge:6px;
  --sh:0 8px 24px -16px rgba(0,0,0,.8);
  --sh-hover:0 18px 40px -20px rgba(0,0,0,.9);
  --focus:2px solid rgba(201,247,63,.6);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:88px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;object-fit:cover;border:0}
a{color:inherit;text-decoration:none}
a:hover{color:var(--primary)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
:focus-visible{outline:var(--focus);outline-offset:2px}
::selection{background:rgba(201,247,63,.28)}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 var(--sp-5)}
@media (max-width:639px){.container{padding:0 var(--sp-4)}}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,12,15,.94);
  border-bottom:1px solid var(--line);
}
.header-inner{
  position:relative;
  display:flex;align-items:center;gap:var(--sp-5);
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:32px;height:32px;flex:none;
  display:grid;place-items:center;
  border:1px solid var(--line-hot);border-radius:9px;
  background:#12171D;color:var(--primary);
}
.brand-mark svg{width:18px;height:18px}
.brand-text{font-size:17px;font-weight:600;letter-spacing:.01em;color:var(--text)}
.brand-text b{color:var(--primary);font-weight:800}
.brand:hover{color:var(--text)}

.nav-channels{display:flex;align-items:center;gap:var(--sp-1)}
.nav-link{
  position:relative;
  padding:10px var(--sp-3);
  border-radius:8px;
  font-size:15px;color:var(--text-2);
  transition:color .2s,background .2s;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;
  height:2px;border-radius:2px;background:var(--primary);
}

.header-tools{margin-left:auto;display:flex;align-items:center;gap:var(--sp-3)}
.search-box{
  display:flex;align-items:center;gap:var(--sp-2);
  padding:8px 16px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:#0F141A;
  transition:border-color .2s,box-shadow .2s;
}
.search-box svg{width:16px;height:16px;color:var(--text-3);flex:none;transition:color .2s}
.search-box input{
  width:140px;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);padding:2px 0;
}
.search-box input::placeholder{color:var(--text-3)}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(201,247,63,.16)}
.search-box:focus-within svg{color:var(--primary)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-2);
  padding:11px 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;
  transition:background .2s,color .2s,border-color .2s,box-shadow .2s,transform .2s;
}
.btn-primary{background:var(--primary);color:#12180A}
.btn-primary:hover{background:var(--primary-h);color:#12180A;transform:translateY(-1px);box-shadow:0 8px 24px -8px rgba(201,247,63,.45)}
.btn-primary:active{background:var(--primary-a);transform:translateY(0);box-shadow:none}
.btn-ghost{border-color:var(--line-2);color:var(--text);background:transparent}
.btn-ghost:hover{border-color:var(--line-hot);color:var(--primary)}
.btn-ghost:active{color:var(--primary-a);border-color:var(--primary-a)}
.btn:disabled,.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn-sm{padding:9px 18px;font-size:14px}

.nav-toggle-input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  place-items:center;border:1px solid var(--line-2);border-radius:12px;
  color:var(--text);cursor:pointer;transition:border-color .2s,color .2s;
}
.nav-toggle svg{width:20px;height:20px}
.nav-toggle:hover{border-color:var(--line-hot);color:var(--primary)}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:#0C1015 url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,15,.72) 0%,rgba(10,12,15,.93) 62%,var(--bg) 100%);
}
.page-head .head-arc{
  position:absolute;right:-140px;bottom:-200px;
  width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(201,247,63,.16);pointer-events:none;
}
.page-head .head-arc.is-second{
  right:-30px;bottom:-300px;width:580px;height:580px;
  border-color:rgba(255,106,43,.14);
}
.page-head-inner{position:relative;padding:var(--sp-9) 0 var(--sp-8);max-width:840px}
.breadcrumb{display:flex;flex-wrap:wrap;gap:var(--sp-2);align-items:center;font-size:13px;color:var(--text-3);margin-bottom:var(--sp-5)}
.breadcrumb a{color:var(--text-3);transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-3);opacity:.6}
.eyebrow{
  display:inline-flex;align-items:center;gap:var(--sp-2);
  padding:5px 12px;margin-bottom:var(--sp-4);
  border:1px solid rgba(56,225,208,.35);border-radius:var(--r-badge);
  font-size:12px;font-weight:600;color:var(--accent);letter-spacing:.04em;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block}
.page-head h1{
  font-size:clamp(28px,4vw,46px);line-height:1.16;
  font-weight:800;letter-spacing:-.02em;
}
.page-head .head-sub{
  margin-top:var(--sp-4);
  font-size:16px;color:var(--text-2);max-width:640px;
}
.head-tags{display:flex;flex-wrap:wrap;gap:var(--sp-2);margin-top:var(--sp-5)}
.tag{
  padding:4px 10px;border:1px solid var(--line-2);border-radius:var(--r-badge);
  font-size:12px;color:var(--text-3);
}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sp-9) 0}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-tight{padding-top:0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:var(--sp-5);margin-bottom:var(--sp-7);
}
.section-head h2{
  font-size:clamp(22px,2.6vw,34px);line-height:1.3;
  font-weight:700;letter-spacing:-.01em;margin-bottom:var(--sp-2);
}
.section-head p{font-size:15px;color:var(--text-2);max-width:620px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;flex:none;
  font-size:15px;font-weight:600;color:var(--primary);transition:color .2s,gap .2s;
}
.link-more svg{width:16px;height:16px}
.link-more:hover{color:var(--primary-h);gap:10px}

.layout-7-5{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:var(--sp-5)}
.layout-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--sp-5)}
.layout-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-5)}

/* ---------- 问题分布大卡 ---------- */
.stat-lead{
  position:relative;overflow:hidden;
  display:flex;flex-direction:column;justify-content:flex-end;
  min-height:340px;padding:var(--sp-6);
  border:1px solid var(--line);border-radius:var(--r-lg);
  background:#12171D url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  box-shadow:var(--sh);
}
.stat-lead::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,15,.42) 0%,rgba(10,12,15,.9) 58%,#0D1116 100%);
}
.stat-lead > *{position:relative;z-index:1}
.stat-lead h3{font-size:clamp(19px,2vw,24px);font-weight:700;margin-bottom:var(--sp-2)}
.stat-lead p{font-size:14px;color:var(--text-2);max-width:520px}
.bar-list{display:grid;gap:var(--sp-4);margin-top:var(--sp-5)}
.bar-row .bar-top{display:flex;justify-content:space-between;gap:var(--sp-3);font-size:14px;color:var(--text-2)}
.bar-row .bar-top b{color:var(--text);font-weight:600}
.bar-track{height:8px;margin-top:8px;border-radius:var(--r-pill);background:rgba(255,255,255,.08);overflow:hidden}
.bar-fill{height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--primary),var(--secondary))}
.bar-fill.is-alt{background:linear-gradient(90deg,var(--accent),var(--primary))}

.mini-stack{display:grid;gap:var(--sp-5)}
.mini-card{
  padding:var(--sp-5);
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--card);box-shadow:var(--sh);
  transition:transform .25s,border-color .25s,background .25s,box-shadow .25s;
}
.mini-card:hover{transform:translateY(-4px);border-color:var(--line-hot);background:var(--card-2);box-shadow:var(--sh-hover)}
.mini-card .num{
  font-size:30px;font-weight:800;line-height:1.1;
  color:var(--primary);letter-spacing:-.02em;
}
.mini-card .num small{font-size:14px;font-weight:600;color:var(--text-2);margin-left:4px}
.mini-card h3{font-size:17px;font-weight:600;margin:var(--sp-2) 0 var(--sp-1)}
.mini-card p{font-size:14px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-wrap{
  border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--card);box-shadow:var(--sh);overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-5);
  min-height:64px;padding:18px var(--sp-5);
  font-size:16px;font-weight:600;color:var(--text);
  cursor:pointer;list-style:none;
  transition:color .2s,background .2s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary);background:rgba(255,255,255,.02)}
.faq-icon{
  position:relative;flex:none;width:22px;height:22px;
  border:1px solid var(--line-2);border-radius:50%;
  transition:transform .25s,border-color .25s;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:1.5px}
.faq-icon::after{width:1.5px;height:10px}
.faq-item[open] .faq-icon{transform:rotate(45deg);border-color:var(--line-hot)}
.faq-item[open] summary{color:var(--primary)}
.faq-body{
  margin:0 var(--sp-5) var(--sp-5);
  padding:var(--sp-5) var(--sp-5);
  border-radius:var(--r-input);
  background:var(--paper);color:var(--paper-text);
  font-size:15px;line-height:1.9;
}
.faq-body p{margin-bottom:var(--sp-3)}
.faq-body p:last-child{margin-bottom:0}
.faq-body ul{list-style:disc;padding-left:1.3em;margin-bottom:var(--sp-3)}
.faq-body li{margin-bottom:4px}
.faq-body a{color:var(--paper-link);text-decoration:underline;text-underline-offset:3px}
.faq-body a:hover{color:#4E6809}
.faq-body strong{color:#0F1317}

/* ---------- 浅底阅读区 ---------- */
.paper-section{
  background:var(--paper);color:var(--paper-text);
  border-radius:var(--r-lg);
  padding:var(--sp-8) var(--sp-7);
}
.paper-section h2{
  font-size:clamp(21px,2.2vw,28px);font-weight:700;
  padding-left:14px;border-left:3px solid var(--primary-a);
  margin-bottom:var(--sp-5);line-height:1.4;
}
.paper-section h3{font-size:18px;font-weight:600;margin:var(--sp-6) 0 var(--sp-3)}
.paper-section p{margin-bottom:var(--sp-4);color:#1F2630;max-width:820px}
.paper-section ul{list-style:disc;padding-left:1.3em;margin-bottom:var(--sp-4);max-width:820px}
.paper-section li{margin-bottom:6px;color:#1F2630}
.paper-section a{color:var(--paper-link);text-decoration:underline;text-underline-offset:3px}
.paper-section strong{color:#0F1317}

/* ---------- 图文卡片 ---------- */
.task-card{
  display:flex;flex-direction:column;height:100%;
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--card);overflow:hidden;box-shadow:var(--sh);
  transition:transform .25s,border-color .25s,box-shadow .25s;
}
.task-card:hover{transform:translateY(-4px);border-color:var(--line-hot);box-shadow:var(--sh-hover)}
.task-thumb{position:relative;aspect-ratio:16/9;background:#171D25;overflow:hidden}
.task-thumb img{width:100%;height:100%;transition:transform .4s ease}
.task-card:hover .task-thumb img{transform:scale(1.03)}
.task-thumb .badge{
  position:absolute;top:12px;right:12px;
  padding:3px 8px;border:1px solid var(--accent);border-radius:var(--r-badge);
  font-size:12px;color:var(--accent);background:rgba(10,12,15,.72);
}
.task-body{display:flex;flex-direction:column;flex:1;gap:var(--sp-3);padding:var(--sp-5)}
.task-body h3{font-size:18px;font-weight:600;line-height:1.5}
.task-body p{font-size:14px;color:var(--text-2);flex:1}
.task-meta{font-size:12px;color:var(--text-3)}
.task-go{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);transition:gap .2s,color .2s;
}
.task-go svg{width:15px;height:15px}
.task-card:hover .task-go{gap:10px;color:var(--primary-h)}

/* ---------- 分页外观 ---------- */
.pager{display:flex;justify-content:center;align-items:center;gap:var(--sp-2);flex-wrap:wrap;margin-top:var(--sp-7)}
.pager a,.pager span{
  min-width:42px;height:42px;padding:0 var(--sp-4);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-pill);
  font-size:14px;color:var(--text-2);transition:border-color .2s,color .2s,background .2s;
}
.pager a:hover{border-color:var(--line-hot);color:var(--primary)}
.pager .is-current{background:var(--primary);border-color:var(--primary);color:#12180A;font-weight:700}

/* ---------- 收尾 CTA ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-6);
  padding:var(--sp-7);
  border:1px solid var(--primary);border-radius:var(--r-lg);
  background:#0F141A;
}
.cta-band h2{font-size:clamp(20px,2.4vw,28px);font-weight:700;margin-bottom:var(--sp-2)}
.cta-band p{font-size:15px;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;gap:var(--sp-3);flex:none;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:var(--sp-9);padding-top:var(--sp-8);background:#08090B;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:var(--sp-6)}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .brand-text{font-size:16px;font-weight:600}
.footer-about{margin-top:var(--sp-4);max-width:340px;font-size:14px;line-height:1.8;color:var(--text-3)}
.footer-col h3{font-size:14px;font-weight:600;color:var(--primary);margin-bottom:var(--sp-4)}
.footer-col li{margin-bottom:10px}
.footer-col a{
  display:inline-block;font-size:14px;color:var(--text-2);
  transition:color .2s,transform .2s;
}
.footer-col a:hover{color:var(--primary);transform:translateX(-2px)}
.footer-contact li{font-size:14px;color:var(--text-3)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);flex-wrap:wrap;
  margin-top:var(--sp-7);padding:var(--sp-5) 0 var(--sp-6);
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);transition:color .2s}
.footer-bottom a:hover{color:var(--primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:var(--sp-5)}
  .footer-col:last-child{grid-column:span 3}
  .footer-about{max-width:none}
}
@media (max-width:1023px){
  .layout-7-5{grid-template-columns:1fr}
  .layout-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-lead{min-height:280px}
  .section{padding:64px 0}
  .page-head-inner{padding:64px 0 56px}
  .paper-section{padding:var(--sp-7) var(--sp-5)}
}
@media (max-width:899px){
  .header-inner{flex-wrap:wrap;min-height:64px;gap:var(--sp-3)}
  .nav-toggle{display:grid}
  .header-tools .btn-ghost{display:none}
  .search-box{display:none}
  .nav-channels{
    display:none;
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    padding:var(--sp-3) var(--sp-5) var(--sp-5);
    background:#0C1015;border-bottom:1px solid var(--line);
    box-shadow:0 18px 40px -20px rgba(0,0,0,.9);
  }
  .nav-toggle-input:checked ~ .nav-channels{display:flex}
  .nav-link{padding:14px 4px;border-bottom:1px solid var(--line);border-radius:0;font-size:15px}
  .nav-link.is-active::after{left:4px;right:auto;width:26px;bottom:6px}
  .brand-text{font-size:16px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:var(--sp-6)}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
}
@media (max-width:767px){
  .layout-3{grid-template-columns:1fr}
  .section{padding:56px 0}
  .page-head-inner{padding:56px 0 48px}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:var(--sp-6)}
  .section-head h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-6) var(--sp-5)}
  .footer-col:last-child{grid-column:span 2}
}
@media (max-width:639px){
  .layout-2{grid-template-columns:1fr}
  .mini-stack{gap:var(--sp-4)}
  .faq-item summary{font-size:15px;padding:16px 18px}
  .faq-body{margin:0 18px 18px;padding:18px}
  .paper-section{padding:var(--sp-6) var(--sp-5)}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}