/* roulang page: index */
:root{
  --bg:#05070E;
  --surface:#0A1020;
  --surface-2:#0E1527;
  --primary:#1EC8FF;
  --primary-deep:#0B83C8;
  --accent:#FF7A3C;
  --lime:#C6FF4F;
  --text:#EAF2FF;
  --text-2:#9FB2CC;
  --text-3:#64748B;
  --line:rgba(127,178,232,0.14);
  --line-strong:rgba(127,178,232,0.28);
  --glass:rgba(18,26,44,0.55);
  --glass-2:rgba(18,26,44,0.38);
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:10px;
  --shadow-soft:0 18px 40px -24px rgba(0,0,0,0.85);
  --shadow-glow:0 8px 30px -8px rgba(30,200,255,0.6);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:40px;
  --sp-5:64px;
  --font:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',system-ui,-apple-system,'Helvetica Neue',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:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(127,178,232,0.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(127,178,232,0.045) 1px,transparent 1px);
  background-size:64px 64px,64px 64px;
}

body::after{
  content:"";
  position:fixed;
  top:-20%;
  right:-10%;
  width:70vw;
  height:80vh;
  pointer-events:none;
  z-index:0;
  background:linear-gradient(45deg,rgba(30,200,255,0.06),rgba(30,200,255,0) 60%);
  transform:rotate(-6deg);
}

h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font);
  color:var(--text);
  letter-spacing:-0.01em;
  line-height:1.35;
  font-weight:700;
}

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 .18s var(--ease);}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;}

a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:3px;
  border-radius:6px;
}

::selection{background:rgba(30,200,255,0.35);color:#fff;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:2;
}
@media (min-width:1440px){
  .container{max-width:1280px;}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  height:48px;
  padding:0 28px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#1EC8FF,#0B83C8);
  color:#04121F;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 38px -10px rgba(30,200,255,0.72);filter:brightness(1.06);}
.btn-ghost{
  background:transparent;
  color:var(--primary);
  border-color:rgba(30,200,255,0.42);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--primary);background:rgba(30,200,255,0.08);}
.btn-glass{
  background:var(--glass);
  color:var(--text);
  border-color:var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.btn-glass:hover{transform:translateY(-2px);border-color:rgba(30,200,255,0.5);color:var(--primary);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn:active{transform:translateY(0);}

.link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14.5px;
  font-weight:600;
  color:var(--primary);
  border-bottom:2px solid transparent;
  padding-bottom:2px;
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.link-more:hover{border-bottom-color:var(--primary);}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  border:1px solid rgba(198,255,79,0.36);
  color:var(--lime);
  font-size:12.5px;
  font-weight:600;
  line-height:1;
  letter-spacing:.02em;
  background:rgba(198,255,79,0.07);
}
.badge-warm{
  border-color:rgba(255,122,60,0.4);
  color:var(--accent);
  background:rgba(255,122,60,0.08);
}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  background:rgba(6,10,20,0.35);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.site-header.is-stuck{
  background:rgba(5,7,14,0.92);
  box-shadow:0 16px 40px -26px rgba(0,0,0,0.95);
  border-bottom-color:var(--line-strong);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:76px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:34px;height:34px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  background:linear-gradient(135deg,rgba(30,200,255,0.9),rgba(11,131,200,0.7));
  box-shadow:0 6px 20px -8px rgba(30,200,255,0.8);
  flex-shrink:0;
}
.logo-mark svg{width:19px;height:19px;display:block;}
.logo-text{
  font-size:19px;
  font-weight:800;
  letter-spacing:-0.02em;
  color:var(--text);
  display:inline-flex;
  align-items:flex-start;
  gap:4px;
}
.logo-text sup{
  font-size:10.5px;
  font-weight:700;
  line-height:1;
  padding:3px 7px;
  border-radius:999px;
  background:rgba(198,255,79,0.12);
  border:1px solid rgba(198,255,79,0.4);
  color:var(--lime);
  letter-spacing:.04em;
  transform:translateY(-2px);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  flex:1 1 auto;
  justify-content:center;
}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 14px;
  border-radius:var(--radius-btn);
  font-size:14.5px;
  font-weight:500;
  color:var(--text-2);
  transition:color .16s var(--ease),background .16s var(--ease);
}
.nav-links a:hover{color:var(--text);background:rgba(127,178,232,0.08);}
.nav-links a.active{color:var(--primary);background:rgba(30,200,255,0.1);}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(30,200,255,0.8);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.nav-search{
  position:relative;
  display:flex;
  align-items:center;
}
.nav-search input{
  width:170px;
  height:40px;
  padding:0 38px 0 14px;
  border-radius:999px;
  background:rgba(10,16,32,0.72);
  border:1px solid var(--line);
  color:var(--text);
  font-size:13.5px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),width .2s var(--ease);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{
  border-color:var(--primary);
  outline:none;
  box-shadow:0 0 0 3px rgba(30,200,255,0.18);
  width:196px;
}
.nav-search button{
  position:absolute;
  right:6px;
  width:28px;height:28px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:0;
  border-radius:50%;
  background:transparent;
  color:var(--text-3);
  cursor:pointer;
  transition:color .16s var(--ease),background .16s var(--ease);
}
.nav-search button:hover{color:var(--primary);background:rgba(30,200,255,0.1);}
.nav-search svg{width:15px;height:15px;}
.nav-burger{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  background:rgba(10,16,32,0.7);
  cursor:pointer;
}
.nav-burger span{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--text);
  position:relative;
}
.nav-burger span::before,
.nav-burger span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--text);
}
.nav-burger span::before{top:-6px;}
.nav-burger span::after{top:6px;}

/* 移动端抽屉 */
.drawer{
  position:fixed;
  inset:0;
  z-index:200;
  background:rgba(5,7,14,0.86);
  backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  opacity:0;
  visibility:hidden;
  transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.drawer.open{opacity:1;visibility:visible;}
.drawer-panel{
  position:absolute;
  inset:0;
  padding:88px 24px 40px;
  display:flex;
  flex-direction:column;
  gap:4px;
  overflow-y:auto;
}
.drawer-close{
  position:absolute;
  top:20px;right:20px;
  width:44px;height:44px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  background:rgba(18,26,44,0.7);
  color:var(--text);
  font-size:22px;
  line-height:1;
  cursor:pointer;
}
.drawer-close:hover{border-color:var(--primary);color:var(--primary);}
.drawer-link{
  display:flex;
  align-items:center;
  height:52px;
  padding:0 16px;
  border-radius:var(--radius-btn);
  font-size:16px;
  font-weight:500;
  color:var(--text-2);
  border:1px solid transparent;
}
.drawer-link:hover,.drawer-link.active{
  color:var(--primary);
  background:rgba(30,200,255,0.08);
  border-color:rgba(30,200,255,0.22);
}
.drawer-form{
  margin-top:20px;
  display:flex;
  gap:10px;
}
.drawer-form input{
  flex:1 1 auto;
  height:46px;
  padding:0 14px;
  border-radius:var(--radius-input);
  border:1px solid var(--line);
  background:rgba(10,16,32,0.8);
  color:var(--text);
  font-size:14px;
}
.drawer-form input::placeholder{color:var(--text-3);}
.drawer-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(30,200,255,0.16);}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:150px 0 96px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center right;
  opacity:.3;
  z-index:0;
}
.hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(5,7,14,0.96) 12%,rgba(5,7,14,0.72) 52%,rgba(5,7,14,0.42) 100%);
}
.hero-inner{
  display:grid;
  grid-template-columns:1.05fr 0.95fr;
  gap:56px;
  align-items:center;
}
.hero-text{position:relative;z-index:3;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(18,26,44,0.6);
  color:var(--text-2);
  font-size:12.5px;
  letter-spacing:.06em;
  margin-bottom:22px;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 10px rgba(198,255,79,0.9);
}
.hero h1{
  font-size:48px;
  font-weight:800;
  letter-spacing:-0.02em;
  line-height:1.22;
  margin-bottom:20px;
}
.hero h1 .hl{
  background:linear-gradient(120deg,#1EC8FF,#C6FF4F);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:16.5px;
  color:var(--text-2);
  max-width:560px;
  margin-bottom:30px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:34px;
}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.hero-points li{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:34px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(10,16,32,0.6);
  font-size:13px;
  color:var(--text-2);
}
.hero-points li b{color:var(--primary);font-weight:700;}
.hero-media{
  position:relative;
  z-index:3;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-soft);
  aspect-ratio:16/11;
  background:var(--surface);
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(200deg,rgba(5,7,14,0) 40%,rgba(5,7,14,0.78) 100%);
}
.hero-media .media-tag{
  position:absolute;
  left:20px;bottom:20px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border-radius:999px;
  background:rgba(5,7,14,0.7);
  border:1px solid var(--line-strong);
  color:var(--text);
  font-size:13px;
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.scroll-cue{
  position:absolute;
  left:50%;
  bottom:22px;
  transform:translateX(-50%);
  z-index:4;
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  gap:6px;
  color:var(--text-3);
  font-size:12px;
  letter-spacing:.08em;
}
.scroll-cue i{
  display:block;
  width:22px;height:34px;
  border:1px solid var(--line-strong);
  border-radius:999px;
  position:relative;
}
.scroll-cue i::after{
  content:"";
  position:absolute;
  left:50%;
  top:7px;
  width:3px;height:7px;
  border-radius:2px;
  background:var(--primary);
  transform:translateX(-50%);
  animation:cue 1.8s var(--ease) infinite;
}
@keyframes cue{
  0%{opacity:0;transform:translate(-50%,0);}
  40%{opacity:1;}
  100%{opacity:0;transform:translate(-50%,12px);}
}

/* ============ 数据条 ============ */
.metrics{
  padding:0 0 8px;
  margin-top:-34px;
  position:relative;
  z-index:6;
}
.metrics-box{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:rgba(10,16,32,0.82);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow-soft);
  overflow:hidden;
}
.metrics-box li{
  padding:22px 24px;
  border-right:1px solid var(--line);
}
.metrics-box li:last-child{border-right:0;}
.metric-num{
  display:block;
  font-size:26px;
  font-weight:800;
  line-height:1.2;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  letter-spacing:-0.01em;
}
.metric-num.dot{
  color:var(--lime);
}
.metric-label{
  display:block;
  margin-top:6px;
  font-size:13.5px;
  color:var(--text-2);
}

/* ============ 通用板块 ============ */
.section{
  padding:96px 0;
  position:relative;
}
.section + .section{border-top:1px solid rgba(127,178,232,0.07);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:44px;
}
.section-head .head-main{max-width:640px;}
.section-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:rgba(198,255,79,0.1);
  border:1px solid rgba(198,255,79,0.34);
  color:var(--lime);
  font-size:12px;
  font-weight:700;
  letter-spacing:.1em;
  margin-bottom:14px;
}
.section-head h2{
  font-size:30px;
  font-weight:700;
  letter-spacing:-0.01em;
}
.section-desc{
  margin-top:12px;
  font-size:15px;
  color:var(--text-2);
  max-width:620px;
}
.section-aside{
  font-size:14px;
  color:var(--text-3);
  white-space:nowrap;
}

/* ============ 合集目录磁贴 ============ */
.gs-gaps{margin-left:-12px;margin-right:-12px;}
.gs-gaps > .cell{padding-left:12px;padding-right:12px;margin-bottom:24px;}

.tile{
  display:flex;
  flex-direction:column;
  height:100%;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  overflow:hidden;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.tile:hover{
  transform:translateY(-4px);
  border-color:rgba(30,200,255,0.55);
  box-shadow:0 22px 46px -26px rgba(30,200,255,0.65);
}
.tile-media{
  position:relative;
  aspect-ratio:4/3;
  overflow:hidden;
  background:var(--surface-2);
}
.tile-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.tile:hover .tile-media img{transform:scale(1.04);}
.tile-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(5,7,14,0) 42%,rgba(5,7,14,0.82) 100%);
}
.tile-index{
  position:absolute;
  top:14px;left:14px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:26px;
  padding:0 10px;
  border-radius:999px;
  background:rgba(5,7,14,0.72);
  border:1px solid rgba(198,255,79,0.42);
  color:var(--lime);
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
}
.tile-body{
  padding:22px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1 1 auto;
}
.tile-body h3{font-size:19px;font-weight:600;}
.tile-body p{font-size:14.5px;line-height:1.7;color:var(--text-2);}
.tile-foot{
  margin-top:auto;
  padding-top:14px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.tile-foot .arrow{
  color:var(--primary);
  transition:transform .2s var(--ease);
}
.tile:hover .tile-foot .arrow{transform:translateX(4px);}

/* ============ 精选条目 ============ */
.feature-card{
  display:grid;
  grid-template-columns:1fr 1fr;
  height:100%;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  overflow:hidden;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.feature-card:hover{
  transform:translateY(-4px);
  border-color:rgba(30,200,255,0.55);
  box-shadow:0 24px 50px -28px rgba(30,200,255,0.7);
}
.feature-media{
  position:relative;
  min-height:250px;
  overflow:hidden;
  background:var(--surface-2);
}
.feature-media img{width:100%;height:100%;object-fit:cover;}
.feature-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(5,7,14,0.15) 0%,rgba(5,7,14,0.55) 100%);
}
.feature-body{
  padding:26px;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.feature-body h3{font-size:21px;font-weight:600;line-height:1.45;}
.feature-body p{font-size:14.5px;line-height:1.75;color:var(--text-2);}
.feature-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.feature-meta .arrow{color:var(--primary);}

/* ============ 最新信息（CMS） ============ */
.card{
  display:flex;
  flex-direction:column;
  height:100%;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  overflow:hidden;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(30,200,255,0.55);
  box-shadow:0 22px 46px -26px rgba(30,200,255,0.6);
}
.card-link{
  display:flex;
  flex-direction:column;
  height:100%;
  padding:24px;
  gap:12px;
}
.card-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.card-title{font-size:18px;font-weight:600;line-height:1.5;}
.card-excerpt{
  font-size:14.5px;
  line-height:1.7;
  color:var(--text-2);
}
.card-meta{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
}
.card-meta .arrow{color:var(--primary);transition:transform .2s var(--ease);}
.card:hover .card-meta .arrow{transform:translateX(4px);}

.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:16px;
  padding:64px 24px;
  border-radius:var(--radius-card);
  border:1px dashed var(--line-strong);
  background:rgba(10,16,32,0.5);
  text-align:center;
}
.empty-state .empty-icon{
  width:56px;height:56px;
  border-radius:16px;
  display:flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line-strong);
  background:rgba(30,200,255,0.08);
  color:var(--primary);
}
.empty-state p{color:var(--text-2);font-size:15px;}

/* ============ 横滑卡轨 ============ */
.rail{
  display:flex;
  gap:20px;
  overflow-x:auto;
  padding:6px 4px 22px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-track{background:rgba(127,178,232,0.08);border-radius:999px;}
.rail::-webkit-scrollbar-thumb{background:rgba(30,200,255,0.5);border-radius:999px;}
.rail-item{
  flex:0 0 calc((100% - 60px) / 4);
  scroll-snap-align:start;
}
.rail-card{
  display:flex;
  flex-direction:column;
  height:100%;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--glass);
  overflow:hidden;
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.rail-card:hover{transform:translateY(-4px);border-color:rgba(30,200,255,0.55);}
.rail-media{aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);}
.rail-media img{width:100%;height:100%;object-fit:cover;}
.rail-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.rail-body h3{font-size:16.5px;font-weight:600;line-height:1.5;}
.rail-body .rail-meta{margin-top:auto;font-size:12.5px;color:var(--text-3);}

/* ============ FAQ ============ */
.faq-list{
  border-top:1px solid var(--line);
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:18px;
  padding:22px 4px;
  background:transparent;
  border:0;
  color:var(--text);
  text-align:left;
  cursor:pointer;
  font-size:16.5px;
  font-weight:600;
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--primary);}
.faq-index{
  flex-shrink:0;
  width:36px;height:26px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  background:rgba(198,255,79,0.1);
  border:1px solid rgba(198,255,79,0.34);
  color:var(--lime);
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
  box-shadow:0 0 16px -6px rgba(198,255,79,0.8);
}
.faq-text{flex:1 1 auto;}
.faq-icon{
  position:relative;
  flex-shrink:0;
  width:20px;height:20px;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:14px;height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:translate(-50%,-50%);
  transition:transform .22s var(--ease);
}
.faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(0deg);}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .22s var(--ease);
}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a-inner p{
  padding:0 4px 24px 54px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  max-width:860px;
}

/* ============ CTA 条 ============ */
.cta-bar{
  padding:0 0 96px;
}
.cta-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:40px;
  border-radius:var(--radius-card);
  border:1px solid var(--line-strong);
  background:
    linear-gradient(120deg,rgba(30,200,255,0.14),rgba(5,7,14,0.9) 58%),
    url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.cta-inner::before{
  content:"";
  position:absolute;
  top:-60%;right:-8%;
  width:44%;height:220%;
  background:linear-gradient(45deg,rgba(255,122,60,0.14),rgba(255,122,60,0) 70%);
  transform:rotate(12deg);
  pointer-events:none;
}
.cta-text{position:relative;z-index:2;max-width:600px;}
.cta-text h2{font-size:26px;font-weight:700;margin-bottom:10px;}
.cta-text p{font-size:15px;color:var(--text-2);}
.cta-actions{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
}
.icon-btn{
  width:48px;height:48px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  background:rgba(10,16,32,0.72);
  color:var(--text-2);
  cursor:pointer;
  transition:transform .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.icon-btn:hover{transform:translateY(-2px);border-color:var(--primary);color:var(--primary);}
.icon-btn svg{width:19px;height:19px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  z-index:2;
  background:#03050A;
  border-top:1px solid rgba(30,200,255,0.22);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{
  font-size:14px;
  color:var(--text-2);
  max-width:280px;
  margin-bottom:18px;
}
.footer-col h3{
  font-size:14px;
  font-weight:700;
  color:var(--text);
  letter-spacing:.04em;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col span{
  font-size:14px;
  color:var(--text-3);
  transition:color .16s var(--ease);
}
.footer-col a:hover{color:var(--primary);border-bottom:2px solid var(--primary);padding-bottom:1px;}
.footer-social{
  display:flex;
  gap:10px;
  margin-top:6px;
}
.footer-social a{
  width:40px;height:40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  background:rgba(10,16,32,0.7);
  color:var(--text-2);
  transition:transform .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.footer-social a:hover{transform:translateY(-2px);border-color:var(--primary);color:var(--primary);}
.footer-social svg{width:17px;height:17px;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 30px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}
.footer-bottom .sep{margin:0 10px;opacity:.5;}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .hero h1{font-size:44px;}
}
@media (max-width:1199px){
  .nav-search input{width:140px;}
  .nav-search input:focus{width:158px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-search{display:none;}
  .nav-burger{display:inline-flex;}
  .nav-inner{height:68px;}
  .hero{padding:126px 0 72px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:38px;}
  .hero-media{aspect-ratio:16/9;}
  .scroll-cue{display:none;}
  .section{padding:72px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:34px;}
  .section-head h2{font-size:26px;}
  .feature-card{grid-template-columns:1fr;}
  .feature-media{min-height:200px;aspect-ratio:16/9;}
  .rail-item{flex:0 0 calc((100% - 20px) / 2);}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .metrics-box{grid-template-columns:repeat(2,1fr);}
  .metrics-box li:nth-child(2){border-right:0;}
  .metrics-box li:nth-child(1),
  .metrics-box li:nth-child(2){border-bottom:1px solid var(--line);}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  body{font-size:15.5px;}
  .hero{padding:112px 0 56px;}
  .hero h1{font-size:31px;line-height:1.3;}
  .hero-sub{font-size:15px;}
  .hero-actions{gap:10px;margin-bottom:24px;}
  .hero-actions .btn-ghost{display:none;}
  .btn{height:46px;padding:0 22px;font-size:14.5px;}
  .hero-points{gap:8px;}
  .hero-points li{font-size:12.5px;height:30px;padding:0 12px;}
  .hero-media{display:none;}
  .metrics{margin-top:20px;}
  .metrics-box{grid-template-columns:1fr;}
  .metrics-box li{border-right:0;border-bottom:1px solid var(--line);}
  .metrics-box li:last-child{border-bottom:0;}
  .section{padding:52px 0;}
  .section-head h2{font-size:22px;}
  .section-desc{font-size:14px;}
  .gs-gaps{margin-left:-8px;margin-right:-8px;}
  .gs-gaps > .cell{padding-left:8px;padding-right:8px;margin-bottom:16px;}
  .tile-body{padding:18px;}
  .card-link{padding:20px;}
  .feature-body{padding:20px;}
  .rail-item{flex:0 0 82%;}
  .faq-q{font-size:15px;padding:18px 0;gap:12px;}
  .faq-a-inner p{padding:0 0 20px 0;font-size:14.5px;}
  .cta-inner{padding:26px 20px;}
  .cta-text h2{font-size:21px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
}

/* roulang page: article */
:root{
  --bg:#05070E;
  --bg-deep:#03050A;
  --surface:#0A1020;
  --surface-2:#0E1526;
  --glass:rgba(18,26,44,.55);
  --glass-strong:rgba(12,18,33,.86);
  --primary:#1EC8FF;
  --primary-deep:#0B83C8;
  --accent:#FF7A3C;
  --lime:#C6FF4F;
  --text:#EAF2FF;
  --text-2:#9FB2CC;
  --text-3:#64748B;
  --line:rgba(127,178,232,.14);
  --line-strong:rgba(127,178,232,.26);
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --shadow-soft:0 18px 50px -28px rgba(0,0,0,.9);
  --shadow-lift:0 26px 60px -30px rgba(0,0,0,.95);
  --glow:0 8px 30px -8px rgba(30,200,255,.6);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-section:96px;
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',system-ui,-apple-system,'Helvetica Neue',sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(to right,rgba(127,178,232,.04) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(127,178,232,.04) 1px,transparent 1px);
  background-size:56px 56px;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:linear-gradient(115deg,transparent 42%,rgba(30,200,255,.06) 50%,transparent 58%);
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--primary);}
p{margin:0 0 1.1em;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.3;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px;}
.container{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
@media (min-width:1440px){ .container{max-width:1280px;} }

/* ---------- 导航 ---------- */
.site-header{
  position:absolute;
  top:0;left:0;right:0;
  z-index:60;
  background:rgba(6,10,20,.35);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-stuck{
  position:fixed;
  background:rgba(5,7,14,.92);
  box-shadow:0 18px 40px -30px rgba(0,0,0,1);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:76px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  font-weight:800;
}
.logo:hover{color:var(--text);}
.logo-mark{
  width:34px;height:34px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--glow);
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{font-size:19px;letter-spacing:-.02em;}
.logo-text sup{
  font-size:10px;
  font-weight:600;
  letter-spacing:.08em;
  color:#04121F;
  background:var(--lime);
  border-radius:var(--r-pill);
  padding:1px 6px;
  margin-left:4px;
  vertical-align:super;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  padding:8px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:var(--r-pill);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a:hover{color:var(--text);background:rgba(127,178,232,.08);}
.nav-links a.active{color:var(--text);background:rgba(30,200,255,.12);}
.nav-links a.active::after{
  content:"";
  position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{
  display:flex;align-items:center;
  height:40px;
  padding:0 6px 0 14px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:rgba(18,26,44,.5);
  transition:border-color .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);}
.nav-search input{
  width:150px;height:100%;
  border:0;background:none;outline:none;
  font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search button{
  width:30px;height:30px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-pill);
  color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-search button:hover{color:var(--primary);background:rgba(30,200,255,.1);}
.nav-search svg{width:16px;height:16px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04121F;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);color:#04121F;}
.btn-glass{
  border:1px solid var(--line-strong);
  background:rgba(18,26,44,.5);
  color:var(--primary);
}
.btn-glass:hover{transform:translateY(-2px);border-color:var(--primary);color:var(--primary);}
.btn-ghost{
  border:1px solid var(--line-strong);
  color:var(--text-2);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.nav-burger{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  position:relative;
}
.nav-burger span,
.nav-burger::before,
.nav-burger::after{
  content:"";
  position:absolute;left:11px;right:11px;height:2px;
  background:var(--text);border-radius:2px;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-burger::before{top:14px;}
.nav-burger span{top:20px;}
.nav-burger::after{top:26px;}
.nav-burger[aria-expanded="true"]::before{transform:translateY(6px) rotate(45deg);}
.nav-burger[aria-expanded="true"] span{opacity:0;}
.nav-burger[aria-expanded="true"]::after{transform:translateY(-6px) rotate(-45deg);}
.mobile-nav{
  position:fixed;inset:0;z-index:80;
  background:var(--glass-strong);
  backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  display:none;
  padding:96px 24px 40px;
}
.mobile-nav.is-open{display:block;}
.mobile-nav a{
  display:block;
  line-height:52px;
  font-size:17px;
  color:var(--text);
  border-bottom:1px solid var(--line);
}
.mobile-nav .close-btn{
  position:absolute;top:20px;right:20px;
  width:44px;height:44px;
  border:1px solid var(--line-strong);
  border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:20px;color:var(--text-2);
}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  padding:150px 0 56px;
  background:#060B16 url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  overflow:hidden;
}
.article-hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(5,7,14,.96) 0%,rgba(5,7,14,.82) 46%,rgba(5,7,14,.55) 100%);
}
.article-hero::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-1px;height:70px;
  background:linear-gradient(100deg,transparent 48%,rgba(30,200,255,.08) 50%,transparent 52%);
  border-bottom:1px solid var(--line);
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb span.sep{color:var(--text-3);}
.breadcrumb .current{color:var(--text-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-hero h1{
  font-size:46px;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.24;
  max-width:920px;
  margin-bottom:20px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:13.5px;color:var(--text-3);
}
.badge{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;
  border-radius:var(--r-pill);
  border:1px solid rgba(198,255,79,.45);
  color:var(--lime);
  font-size:12.5px;font-weight:600;
  letter-spacing:.02em;
}
.badge-orange{border-color:rgba(255,122,60,.5);color:var(--accent);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);}
.share-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.share-row .btn{height:40px;padding:0 18px;font-size:14px;}

/* ---------- 正文区 ---------- */
.section{padding:var(--sp-section) 0;position:relative;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 260px;
  gap:48px;
  align-items:start;
}
.article-shell{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:44px 48px 40px;
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.article-body{
  max-width:760px;
  font-size:17.5px;
  line-height:1.9;
  color:var(--text-2);
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.4em;}
.article-body h2{
  position:relative;
  font-size:26px;
  color:var(--text);
  margin:2.2em 0 1em;
  padding-left:16px;
  line-height:1.4;
}
.article-body h2::before{
  content:"";
  position:absolute;left:0;top:.22em;bottom:.22em;width:3px;
  background:var(--primary);
  border-radius:3px;
  box-shadow:0 0 14px rgba(30,200,255,.8);
}
.article-body h3{
  font-size:20px;
  color:var(--text);
  margin:1.8em 0 .7em;
}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(30,200,255,.35);}
.article-body a:hover{border-bottom-width:2px;}
.article-body strong{color:var(--text);font-weight:600;}
.article-body img{
  width:100%;
  border-radius:12px;
  margin:1.6em 0;
  object-fit:cover;
}
.article-body figure{margin:1.8em 0;}
.article-body figcaption{
  font-size:13.5px;
  color:var(--text-3);
  text-align:center;
  margin-top:10px;
}
.article-body blockquote{
  margin:1.8em 0;
  padding:20px 24px;
  background:rgba(18,26,44,.6);
  border-left:3px solid var(--primary);
  border-radius:0 12px 12px 0;
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,
.article-body ol{
  margin:0 0 1.4em;
  padding-left:0;
  list-style:none;
}
.article-body li{
  position:relative;
  padding-left:22px;
  margin-bottom:.6em;
}
.article-body ul > li::before{
  content:"";
  position:absolute;left:2px;top:.72em;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(30,200,255,.7);
}
.article-body ol{counter-reset:artlist;}
.article-body ol > li{counter-increment:artlist;}
.article-body ol > li::before{
  content:counter(artlist);
  position:absolute;left:0;top:.2em;
  font-size:12px;font-weight:700;
  color:var(--lime);
  min-width:16px;
  font-variant-numeric:tabular-nums;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.8em 0;
  font-size:15px;
  display:block;
  overflow-x:auto;
  white-space:nowrap;
}
.article-body th,
.article-body td{
  padding:12px 16px;
  border-bottom:1px solid var(--line);
  text-align:left;
  font-variant-numeric:tabular-nums;
}
.article-body th{
  color:var(--text);
  background:rgba(30,200,255,.06);
  font-weight:600;
}
.article-body code{
  font-family:'SFMono-Regular',Consolas,Menlo,monospace;
  font-size:14.5px;
  background:rgba(127,178,232,.1);
  border-radius:6px;
  padding:2px 7px;
  color:var(--text);
}
.article-body hr{
  border:0;
  height:1px;
  background:var(--line);
  margin:2.4em 0;
}

/* ---------- 目录侧栏 ---------- */
.toc-rail{
  position:sticky;
  top:110px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 22px 24px;
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.toc-rail h2{
  font-size:13px;
  letter-spacing:.1em;
  color:var(--text-3);
  font-weight:600;
  margin-bottom:14px;
}
.toc-list a{
  display:block;
  font-size:14px;
  color:var(--text-2);
  padding:7px 0 7px 14px;
  border-left:2px solid transparent;
  line-height:1.5;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.toc-list a:hover{color:var(--primary);border-left-color:var(--primary);}
.rail-card{
  margin-top:20px;
  padding-top:20px;
  border-top:1px solid var(--line);
}
.rail-card p{font-size:14px;color:var(--text-3);margin-bottom:14px;}
.rail-card .btn{width:100%;height:44px;font-size:14px;}

/* ---------- 标签 ---------- */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:36px;padding-top:26px;
  border-top:1px solid var(--line);
}
.tag-row .label{font-size:13.5px;color:var(--text-3);margin-right:4px;}
.tag{
  display:inline-flex;align-items:center;
  height:32px;padding:0 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(18,26,44,.5);
  font-size:13.5px;
  color:var(--text-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.tag:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}

/* ---------- 相关推荐 ---------- */
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:36px;
}
.section-head h2{
  font-size:30px;
  font-weight:700;
}
.section-head p{font-size:15px;color:var(--text-3);margin:8px 0 0;}
.sec-index{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;color:var(--lime);
  letter-spacing:.14em;
  margin-bottom:14px;
}
.sec-index::before{
  content:"";
  width:26px;height:1px;background:var(--lime);opacity:.6;
}
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card{
  display:flex;
  flex-direction:column;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow-soft);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(30,200,255,.55);
  box-shadow:var(--shadow-lift);
}
.card:hover h3{color:var(--primary);}
.card-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
}
.card-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .3s var(--ease);
}
.card:hover .card-thumb img{transform:scale(1.04);}
.card-thumb::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 45%,rgba(5,7,14,.72) 100%);
}
.card-thumb .badge{
  position:absolute;left:14px;top:14px;z-index:2;
  background:rgba(5,7,14,.6);
  backdrop-filter:blur(8px);
}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{
  font-size:18px;font-weight:600;line-height:1.45;
  transition:color .2s var(--ease);
}
.card-body p{font-size:14.5px;line-height:1.7;color:var(--text-2);margin:0;}
.card-foot{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
  padding-top:6px;
}
.card-foot .arrow{
  color:var(--primary);
  font-size:16px;
  transition:transform .2s var(--ease);
}
.card:hover .card-foot .arrow{transform:translateX(4px);}

/* ---------- CTA 条 ---------- */
.cta-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:26px;
  padding:34px 38px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:
    linear-gradient(100deg,rgba(30,200,255,.12),rgba(10,16,32,.9) 55%),
    var(--surface);
  box-shadow:var(--shadow-soft);
}
.cta-bar h2{font-size:24px;margin-bottom:8px;}
.cta-bar p{font-size:14.5px;color:var(--text-2);margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;
  padding:80px 24px;
  border:1px dashed var(--line-strong);
  border-radius:var(--r-card);
  background:rgba(10,16,32,.5);
}
.empty-state .glyph{
  width:64px;height:64px;
  margin:0 auto 20px;
  border-radius:18px;
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  color:var(--primary);
}
.empty-state .glyph svg{width:28px;height:28px;}
.empty-state p{font-size:16px;color:var(--text-2);margin-bottom:22px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:0;
  background:var(--bg-deep);
  border-top:1px solid rgba(30,200,255,.22);
  padding:72px 0 28px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line);
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  color:var(--text-3);
  max-width:280px;
}
.footer-col h3{
  font-size:14px;
  color:var(--text);
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:12px;}
.footer-col a,
.footer-col span{
  font-size:14px;
  color:var(--text-3);
}
.footer-col a:hover{color:var(--primary);}
.footer-social{display:flex;gap:10px;margin-top:16px;}
.footer-social a{
  width:40px;height:40px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.footer-social a:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.footer-social svg{width:18px;height:18px;}
.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-3);
}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:18px;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .toc-rail{display:none;}
}
@media (max-width:1023px){
  :root{--sp-section:72px;}
  .nav-links,.nav-search{display:none;}
  .nav-burger{display:inline-flex;}
  .article-hero{padding-top:132px;}
  .article-hero h1{font-size:36px;}
  .article-shell{padding:32px 28px 30px;}
  .article-body{font-size:17px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:639px){
  :root{--sp-section:52px;}
  .container{padding:0 16px;}
  .nav-inner{gap:12px;min-height:66px;}
  .nav-actions .btn-primary{display:none;}
  .article-hero{padding:118px 0 40px;}
  .article-hero h1{font-size:30px;line-height:1.3;}
  .article-shell{padding:24px 18px 26px;border-radius:14px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:22px;}
  .section-head h2{font-size:24px;}
  .card-grid{grid-template-columns:1fr;}
  .cta-bar{padding:24px 20px;}
  .cta-bar h2{font-size:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;padding:0 16px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
  --bg:#05070E;
  --surface:#0A1020;
  --glass:rgba(18,26,44,.55);
  --primary:#1EC8FF;
  --primary-deep:#0B83C8;
  --accent:#FF7A3C;
  --dot:#C6FF4F;
  --text:#EAF2FF;
  --text-2:#9FB2CC;
  --text-3:#64748B;
  --line:rgba(127,178,232,.14);
  --line-strong:rgba(127,178,232,.28);
  --r-card:16px;
  --r-btn:10px;
  --shadow:0 18px 50px -28px rgba(0,0,0,.9);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',system-ui,-apple-system,'Helvetica Neue',sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(127,178,232,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(127,178,232,.04) 1px,transparent 1px);
  background-size:52px 52px;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--primary);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;}
h1,h2,h3,h4,p,ul,li,figure{margin:0;padding:0;}
ul{list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
@media (min-width:1440px){.container{max-width:1280px;}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:absolute;top:0;left:0;right:0;z-index:40;
  background:rgba(6,10,20,.35);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-stuck{
  position:fixed;
  background:rgba(5,7,14,.94);
  box-shadow:0 14px 40px -24px rgba(0,0,0,.95);
  border-bottom-color:rgba(127,178,232,.22);
}
.nav-inner{display:flex;align-items:center;gap:28px;height:76px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 8px 24px -12px rgba(30,200,255,.8);
}
.logo-mark svg{width:19px;height:19px;}
.logo-text{font-size:19px;font-weight:800;letter-spacing:-.02em;display:inline-flex;align-items:flex-start;gap:3px;}
.logo-text sup{
  font-size:10px;font-weight:600;line-height:1;padding:3px 5px;border-radius:999px;
  color:#04121F;background:var(--dot);letter-spacing:.02em;transform:translateY(2px);
}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-links a{font-size:15px;color:var(--text-2);position:relative;padding:6px 0;}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .18s var(--ease);
}
.nav-links a:hover{color:var(--text);}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active{color:var(--text);font-weight:600;}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.nav-search{display:flex;align-items:center;gap:6px;height:40px;padding:0 12px;
  border:1px solid var(--line);border-radius:999px;background:rgba(18,26,44,.5);
  transition:border-color .18s var(--ease);}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(30,200,255,.16);}
.nav-search input{
  width:150px;background:none;border:0;color:var(--text);font-size:13.5px;outline:none;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search button{display:inline-flex;color:var(--text-2);}
.nav-search button svg{width:16px;height:16px;}
.nav-search button:hover{color:var(--primary);}
.nav-burger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;position:relative;}
.nav-burger span,.nav-burger span::before,.nav-burger span::after{
  content:"";display:block;width:16px;height:2px;border-radius:2px;background:var(--text);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-burger span::before{transform:translateY(-5px);}
.nav-burger span::after{transform:translateY(3px);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{
  color:#04121F;
  background:linear-gradient(135deg,#1EC8FF,#0B83C8);
  box-shadow:0 8px 30px -8px rgba(30,200,255,.6);
}
.btn-primary:hover{transform:translateY(-2px);color:#04121F;box-shadow:0 12px 34px -8px rgba(30,200,255,.75);}
.btn-ghost{border:1px solid var(--line-strong);color:var(--primary);background:transparent;}
.btn-ghost:hover{border-color:var(--primary);transform:translateY(-2px);color:var(--primary);}
.btn-glass{
  border:1px solid var(--line);background:var(--glass);color:var(--text);
  -webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%);
}
.btn-glass:hover{border-color:var(--primary);transform:translateY(-2px);color:var(--text);}

/* ---------- 分类封面条 ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  padding:170px 0 72px;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.cat-hero::before{
  content:"";position:absolute;top:-20%;left:-10%;width:70%;height:150%;
  background:linear-gradient(45deg,rgba(30,200,255,.10),transparent 62%);
  transform:skewX(-12deg);pointer-events:none;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(112deg,rgba(5,7,14,.95) 0%,rgba(5,7,14,.82) 44%,rgba(5,7,14,.42) 100%);
}
.cat-hero .container{position:relative;z-index:2;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--primary);}
.crumb span.sep{color:var(--line-strong);}
.crumb .current{color:var(--text-2);}
.cat-hero h1{
  font-size:46px;line-height:1.18;font-weight:800;letter-spacing:-.02em;max-width:19em;
}
.cat-hero h1 em{font-style:normal;color:var(--primary);}
.cat-hero .lead{
  margin-top:18px;max-width:44em;font-size:16.5px;line-height:1.9;color:var(--text-2);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;border-radius:999px;
  padding:5px 12px;font-size:12.5px;font-weight:600;letter-spacing:.01em;
  border:1px solid rgba(198,255,79,.42);color:var(--dot);background:rgba(198,255,79,.06);
}
.badge-muted{border-color:var(--line);color:var(--text-2);background:rgba(127,178,232,.05);}
.hero-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:38px;max-width:860px;}
.stat{
  border:1px solid var(--line);border-radius:14px;padding:16px 18px;
  background:var(--glass);
  -webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%);
}
.stat strong{display:block;font-size:24px;font-weight:800;color:var(--text);font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
.stat span{font-size:13px;color:var(--text-3);}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;position:relative;z-index:1;}
.section-tight{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-head h2{font-size:30px;font-weight:700;letter-spacing:-.02em;line-height:1.3;}
.section-head h2 .num{
  display:inline-flex;align-items:center;justify-content:center;margin-right:12px;
  min-width:38px;height:26px;border-radius:999px;font-size:13px;font-weight:700;
  color:#04121F;background:var(--dot);font-variant-numeric:tabular-nums;transform:translateY(-4px);
}
.section-head p{color:var(--text-3);font-size:14px;max-width:36em;}

/* ---------- 赛事资讯：锚点 + 列表流 ---------- */
.news-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:40px;align-items:start;}
.side-nav{
  position:sticky;top:104px;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;background:var(--glass);
  -webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%);
}
.side-nav h3{font-size:13px;font-weight:700;color:var(--text-3);letter-spacing:.08em;margin-bottom:14px;}
.side-nav ul li + li{margin-top:2px;}
.side-nav a{
  display:flex;align-items:center;gap:10px;padding:10px 10px;border-radius:10px;
  font-size:14.5px;color:var(--text-2);transition:background .18s var(--ease),color .18s var(--ease);
}
.side-nav a i{
  width:6px;height:6px;border-radius:50%;background:var(--line-strong);display:inline-block;flex-shrink:0;
  transition:background .18s var(--ease),box-shadow .18s var(--ease);
}
.side-nav a:hover{background:rgba(30,200,255,.07);color:var(--text);}
.side-nav a:hover i{background:var(--primary);box-shadow:0 0 0 4px rgba(30,200,255,.16);}
.side-note{
  margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--text-3);line-height:1.7;
}

.news-list{display:flex;flex-direction:column;gap:18px;}
.news-row{
  display:grid;grid-template-columns:210px minmax(0,1fr);gap:22px;
  border:1px solid var(--line);border-radius:var(--r-card);padding:18px;
  background:rgba(10,16,32,.62);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.news-row:hover{transform:translateY(-4px);border-color:rgba(30,200,255,.5);box-shadow:0 20px 46px -30px rgba(30,200,255,.55);}
.row-thumb{
  position:relative;display:block;width:100%;aspect-ratio:4/3;border-radius:12px;overflow:hidden;
  background:var(--surface);
}
.row-thumb img{width:100%;height:100%;transition:transform .3s var(--ease);}
.news-row:hover .row-thumb img{transform:scale(1.04);}
.row-body{display:flex;flex-direction:column;gap:8px;min-width:0;}
.row-body h3{font-size:18px;font-weight:600;line-height:1.5;letter-spacing:-.01em;}
.row-body h3 a:hover{color:var(--primary);}
.row-body p{font-size:14.5px;line-height:1.7;color:var(--text-2);}
.row-meta{display:flex;flex-wrap:wrap;gap:16px;margin-top:auto;padding-top:8px;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.row-meta span{display:inline-flex;align-items:center;gap:6px;}
.row-meta span::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--text-3);}
.row-body .badge{align-self:flex-start;}

/* ---------- 结果条 ---------- */
.ticker{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;
  margin-top:36px;
}
.ticker-card{
  border:1px solid var(--line);border-radius:14px;padding:18px;
  background:linear-gradient(160deg,rgba(30,200,255,.08),rgba(10,16,32,.6));
}
.ticker-card strong{display:block;font-size:15px;font-weight:700;color:var(--text);margin-bottom:4px;}
.ticker-card span{font-size:13.5px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:340px minmax(0,1fr);gap:48px;align-items:start;}
.faq-intro h2{font-size:30px;font-weight:700;letter-spacing:-.02em;line-height:1.3;}
.faq-intro p{margin-top:14px;color:var(--text-2);font-size:15px;line-height:1.85;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  border:1px solid var(--line);border-radius:14px;overflow:hidden;
  background:rgba(10,16,32,.6);transition:border-color .2s var(--ease);
}
.faq-item.open{border-color:rgba(30,200,255,.45);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-num{
  flex-shrink:0;min-width:30px;height:24px;border-radius:999px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:var(--dot);
  background:rgba(198,255,79,.08);border:1px solid rgba(198,255,79,.3);
  font-variant-numeric:tabular-nums;
}
.faq-icon{
  margin-left:auto;position:relative;width:16px;height:16px;flex-shrink:0;
  transition:transform .22s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s var(--ease);}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a-inner p{padding:0 20px 20px 64px;font-size:14.5px;line-height:1.8;color:var(--text-2);}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.rel-card{
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  background:rgba(10,16,32,.6);display:flex;flex-direction:column;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(30,200,255,.5);box-shadow:0 20px 46px -30px rgba(30,200,255,.5);}
.rel-card figure{aspect-ratio:16/9;overflow:hidden;background:var(--surface);}
.rel-card figure img{width:100%;height:100%;}
.rel-card .rel-body{padding:20px 22px 22px;}
.rel-card h3{font-size:18px;font-weight:600;line-height:1.5;}
.rel-card p{margin-top:8px;font-size:14.5px;line-height:1.7;color:var(--text-2);}
.rel-card .arrow{margin-top:16px;color:var(--primary);font-size:14px;font-weight:600;display:inline-flex;gap:6px;align-items:center;}

/* ---------- CTA 条 ---------- */
.cta-bar{
  border:1px solid var(--line);border-radius:20px;padding:32px 34px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:linear-gradient(120deg,rgba(30,200,255,.12),rgba(10,16,32,.72) 58%,rgba(255,122,60,.10));
}
.cta-bar h2{font-size:24px;font-weight:700;letter-spacing:-.01em;}
.cta-bar p{margin-top:8px;color:var(--text-2);font-size:14.5px;max-width:38em;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;margin-top:24px;padding:72px 0 28px;
  background:#03050B;border-top:1px solid rgba(30,200,255,.18);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-3);max-width:22em;line-height:1.8;}
.footer-col h3{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li + li{margin-top:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-social{display:flex;gap:12px;margin-top:16px;}
.footer-social a{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-2);
  transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.footer-social a:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.footer-social svg{width:19px;height:19px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .nav-links{gap:18px;}
  .nav-search input{width:120px;}
  .cat-hero h1{font-size:40px;}
}
@media (max-width:1023px){
  .nav-inner{height:70px;gap:16px;}
  .nav-search{display:none;}
  .nav-burger{display:inline-flex;}
  .nav-links{
    position:fixed;inset:0;z-index:50;margin:0;padding:104px 26px 40px;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(5,7,14,.95);
    -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
    transform:translateY(-100%);opacity:0;pointer-events:none;
    transition:transform .24s var(--ease),opacity .24s var(--ease);
  }
  body.nav-open .nav-links{transform:translateY(0);opacity:1;pointer-events:auto;}
  .nav-links a{font-size:18px;line-height:52px;border-bottom:1px solid var(--line);color:var(--text);}
  .nav-links a::after{display:none;}
  body.nav-open .nav-burger span{background:transparent;}
  body.nav-open .nav-burger span::before{transform:translateY(0) rotate(45deg);}
  body.nav-open .nav-burger span::after{transform:translateY(-2px) rotate(-45deg);}
  .cat-hero{padding:140px 0 60px;}
  .cat-hero h1{font-size:34px;}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section{padding:72px 0;}
  .news-layout{grid-template-columns:1fr;gap:26px;}
  .side-nav{position:static;}
  .side-nav ul{display:flex;flex-wrap:wrap;gap:8px;}
  .side-nav ul li + li{margin-top:0;}
  .faq-wrap{grid-template-columns:1fr;gap:26px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;}
  .ticker{grid-template-columns:1fr;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .cat-hero{padding:124px 0 52px;}
  .cat-hero h1{font-size:30px;}
  .cat-hero .lead{font-size:15px;}
  .hero-stats{gap:12px;margin-top:28px;}
  .stat strong{font-size:20px;}
  .section{padding:52px 0;}
  .section-head h2,.faq-intro h2{font-size:24px;}
  .news-row{grid-template-columns:1fr;gap:16px;padding:16px;}
  .row-thumb{aspect-ratio:16/9;}
  .rel-grid{grid-template-columns:1fr;}
  .faq-a-inner p{padding:0 18px 18px 18px;}
  .cta-bar{padding:24px 20px;border-radius:16px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;padding:0 18px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-brand p{max-width:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category2 */
:root{
  --bg:#05070E;
  --bg-2:#0A1020;
  --bg-3:#070A14;
  --main:#1EC8FF;
  --main-deep:#0B83C8;
  --accent:#FF7A3C;
  --tip:#C6FF4F;
  --text:#EAF2FF;
  --text-2:#9FB2CC;
  --text-3:#64748B;
  --line:rgba(127,178,232,0.14);
  --line-strong:rgba(127,178,232,0.28);
  --glass:rgba(18,26,44,0.55);
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:10px;
  --shadow-soft:0 18px 44px -26px rgba(2,8,20,0.9);
  --shadow-lift:0 26px 60px -30px rgba(30,200,255,0.42);
  --ease:cubic-bezier(.2,.7,.3,1);
  --section-pad:96px;
}
*,*::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:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',system-ui,-apple-system,'Helvetica Neue',sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(127,178,232,0.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(127,178,232,0.04) 1px,transparent 1px);
  background-size:64px 64px;
}
body::after{
  content:"";
  position:fixed;
  top:-20%;
  right:-10%;
  width:70vw;
  height:70vw;
  max-width:900px;
  max-height:900px;
  pointer-events:none;
  z-index:0;
  background:linear-gradient(135deg,rgba(30,200,255,0.10),transparent 62%);
  transform:rotate(24deg);
  filter:blur(4px);
}
img{max-width:100%;display:block;}
a{color:var(--main);text-decoration:none;transition:color 180ms var(--ease),border-color 180ms var(--ease);}
a:hover{color:#7FE0FF;}
p{margin:0 0 1.1em;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;line-height:1.3;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--main);outline-offset:3px;border-radius:4px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
main{position:relative;z-index:1;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:48px;
  padding:0 28px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:0.01em;
  cursor:pointer;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#1EC8FF,#0B83C8);
  color:#04121F;
  box-shadow:0 8px 30px -8px rgba(30,200,255,0.6);
}
.btn-primary:hover{
  color:#04121F;
  transform:translateY(-2px);
  box-shadow:0 14px 36px -10px rgba(30,200,255,0.78);
}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{
  border-color:var(--main);
  color:var(--main);
  transform:translateY(-2px);
}
.btn-glass{
  background:rgba(18,26,44,0.6);
  border-color:var(--line);
  color:var(--main);
  backdrop-filter:blur(16px) saturate(140%);
}
.btn-glass:hover{
  border-color:var(--main);
  color:#7FE0FF;
  transform:translateY(-2px);
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}

/* ---------- 导航 ---------- */
.site-header{
  position:absolute;
  top:0;
  left:0;
  right:0;
  z-index:60;
  background:rgba(6,10,20,0.35);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background 200ms var(--ease),box-shadow 200ms var(--ease);
}
.site-header.is-stuck{
  position:fixed;
  background:rgba(5,7,14,0.92);
  box-shadow:0 18px 40px -28px rgba(0,0,0,0.95);
  border-bottom-color:var(--line-strong);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:76px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  font-weight:800;
  letter-spacing:-0.01em;
}
.logo:hover{color:var(--text);}
.logo-mark{
  width:34px;
  height:34px;
  border-radius:10px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,#1EC8FF,#0B83C8);
  box-shadow:0 8px 24px -10px rgba(30,200,255,0.75);
  flex:0 0 auto;
}
.logo-mark svg{width:19px;height:19px;}
.logo-text{font-size:19px;line-height:1;}
.logo-text sup{
  display:inline-block;
  vertical-align:super;
  font-size:10px;
  font-weight:600;
  letter-spacing:0.04em;
  color:#04121F;
  background:var(--tip);
  border-radius:999px;
  padding:1px 7px;
  margin-left:2px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
}
.nav-links a{
  display:inline-block;
  padding:8px 14px;
  border-radius:8px;
  font-size:15px;
  color:var(--text-2);
  border-bottom:2px solid transparent;
}
.nav-links a:hover{
  color:var(--text);
  border-bottom-color:var(--main);
}
.nav-links a.active{
  color:var(--main);
  background:rgba(30,200,255,0.08);
  border-bottom-color:var(--main);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:14px;
  margin-left:auto;
}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 12px;
  border-radius:var(--radius-input);
  background:rgba(10,16,32,0.7);
  border:1px solid var(--line);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.nav-search:focus-within{
  border-color:var(--main);
  box-shadow:0 0 0 3px rgba(30,200,255,0.18);
}
.nav-search input{
  width:150px;
  border:0;
  background:transparent;
  color:var(--text);
  font-size:14px;
  outline:none;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search button{
  border:0;
  background:transparent;
  color:var(--text-2);
  cursor:pointer;
  display:inline-flex;
  padding:0;
}
.nav-search button svg{width:17px;height:17px;}
.nav-search button:hover{color:var(--main);}
.nav-burger{
  display:none;
  width:44px;
  height:44px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(10,16,32,0.7);
  position:relative;
  cursor:pointer;
  z-index:80;
}
.nav-burger span,
.nav-burger span::before,
.nav-burger span::after{
  position:absolute;
  left:50%;
  width:18px;
  height:2px;
  background:var(--text);
  border-radius:2px;
  transition:transform 200ms var(--ease),opacity 200ms var(--ease);
  transform:translateX(-50%);
}
.nav-burger span{top:50%;margin-top:-1px;}
.nav-burger span::before{content:"";top:-6px;left:0;transform:none;}
.nav-burger span::after{content:"";top:6px;left:0;transform:none;}
.nav-burger.is-open span{background:transparent;}
.nav-burger.is-open span::before{transform:translateY(6px) rotate(45deg);}
.nav-burger.is-open span::after{transform:translateY(-6px) rotate(-45deg);}

/* ---------- 分类封面条 ---------- */
.cat-hero{
  position:relative;
  padding:170px 0 88px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.cat-hero-bg{
  position:absolute;
  inset:0;
  background-image:linear-gradient(120deg,rgba(5,7,14,0.94) 24%,rgba(5,7,14,0.62) 72%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  z-index:0;
}
.cat-hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,rgba(30,200,255,0.10),transparent 58%);
  clip-path:polygon(0 62%,100% 24%,100% 100%,0 100%);
}
.cat-hero .container{
  display:grid;
  grid-template-columns:1.35fr 1fr;
  gap:48px;
  align-items:center;
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--text-3);
  margin-bottom:18px;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--main);}
.crumb span.sep{color:var(--text-3);}
.crumb .current{color:var(--text-2);}
.cat-hero h1{
  font-size:48px;
  font-weight:800;
  letter-spacing:-0.02em;
  line-height:1.22;
  margin-bottom:18px;
}
.cat-hero h1 em{
  font-style:normal;
  color:var(--main);
}
.cat-hero-lead{
  font-size:17px;
  color:var(--text-2);
  max-width:560px;
  margin-bottom:26px;
}
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:28px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 14px;
  border-radius:999px;
  border:1px solid rgba(198,255,79,0.36);
  color:var(--tip);
  font-size:13px;
  letter-spacing:0.01em;
  background:rgba(198,255,79,0.06);
}
.tag--main{
  border-color:rgba(30,200,255,0.4);
  color:var(--main);
  background:rgba(30,200,255,0.08);
}
.cat-hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cat-hero-card{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow-soft);
}
.cat-hero-card img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.cat-hero-card-body{
  padding:20px 22px 22px;
}
.cat-hero-card-body h2{
  font-size:17px;
  margin-bottom:8px;
}
.cat-hero-card-body p{
  font-size:14px;
  color:var(--text-2);
  margin:0;
}
.cat-hero-stats{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:12px;
  margin-top:18px;
}
.cat-hero-stats div{
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(10,16,32,0.6);
  padding:12px 14px;
}
.cat-hero-stats b{
  display:block;
  font-size:22px;
  color:var(--main);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.cat-hero-stats span{
  font-size:12.5px;
  color:var(--text-3);
}

/* ---------- 通用板块 ---------- */
.section{
  padding:var(--section-pad) 0;
  position:relative;
}
.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:32px;
  margin-bottom:44px;
}
.section-head h2{
  font-size:30px;
  font-weight:700;
  display:flex;
  align-items:center;
  gap:14px;
}
.section-head h2 .num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:26px;
  border-radius:999px;
  background:rgba(198,255,79,0.12);
  border:1px solid rgba(198,255,79,0.4);
  color:var(--tip);
  font-size:13px;
  font-variant-numeric:tabular-nums;
  font-weight:600;
}
.section-head p{
  max-width:460px;
  font-size:14.5px;
  color:var(--text-2);
  margin:10px 0 0;
}
.section-head .head-note{
  max-width:420px;
  text-align:right;
  font-size:14.5px;
  color:var(--text-2);
  margin:0;
}

/* ---------- 编号步骤卡 ---------- */
.step-grid{margin-left:-12px;margin-right:-12px;}
.step-grid > .cell{padding-left:12px;padding-right:12px;margin-left:0;margin-right:0;}
.step-card{
  position:relative;
  height:100%;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(140%);
  padding:28px 26px 26px;
  box-shadow:var(--shadow-soft);
  transition:transform 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
  margin-bottom:24px;
}
.step-card:hover{
  transform:translateY(-4px);
  border-color:rgba(30,200,255,0.55);
  box-shadow:var(--shadow-lift);
}
.step-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:52px;
  height:34px;
  padding:0 14px;
  border-radius:999px;
  background:rgba(198,255,79,0.12);
  border:1px solid rgba(198,255,79,0.44);
  color:var(--tip);
  font-size:15px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  letter-spacing:0.04em;
  margin-bottom:18px;
}
.step-card h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:10px;
}
.step-card p{
  font-size:14.5px;
  line-height:1.75;
  color:var(--text-2);
  margin:0 0 16px;
}
.step-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  border-top:1px solid var(--line);
  padding-top:14px;
}
.step-meta span{
  font-size:12.5px;
  color:var(--text-3);
  border:1px solid var(--line);
  border-radius:999px;
  padding:3px 11px;
}
.step-meta span b{color:var(--main);font-weight:600;font-variant-numeric:tabular-nums;}

/* ---------- 每周节奏 ---------- */
.week-list{
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(140%);
  overflow:hidden;
  box-shadow:var(--shadow-soft);
}
.week-row{
  display:grid;
  grid-template-columns:120px 1.6fr 120px 130px;
  align-items:center;
  gap:18px;
  padding:20px 26px;
  border-bottom:1px solid var(--line);
  transition:background 180ms var(--ease),transform 180ms var(--ease);
}
.week-row:last-child{border-bottom:0;}
.week-row:hover{background:rgba(30,200,255,0.05);}
.week-day{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  display:flex;
  align-items:center;
  gap:10px;
}
.week-day i{
  width:8px;height:8px;border-radius:50%;
  background:var(--main);
  box-shadow:0 0 12px rgba(30,200,255,0.8);
  font-style:normal;
  flex:0 0 auto;
}
.week-desc{font-size:14.5px;color:var(--text-2);}
.week-time{
  font-size:15px;
  font-variant-numeric:tabular-nums;
  color:var(--text);
}
.week-level{
  justify-self:start;
  font-size:12.5px;
  padding:4px 13px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  color:var(--text-2);
  font-variant-numeric:tabular-nums;
}
.week-level.lv-hi{
  border-color:rgba(255,122,60,0.5);
  color:var(--accent);
  background:rgba(255,122,60,0.08);
}
.week-level.lv-mid{
  border-color:rgba(30,200,255,0.45);
  color:var(--main);
  background:rgba(30,200,255,0.08);
}
.week-level.lv-low{
  border-color:rgba(198,255,79,0.4);
  color:var(--tip);
  background:rgba(198,255,79,0.07);
}

/* ---------- 强度控制 ---------- */
.control-wrap{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:40px;
  align-items:start;
}
.quote{
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  border-left:3px solid var(--main);
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(140%);
  padding:26px 28px;
  box-shadow:var(--shadow-soft);
}
.quote p{
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  margin:0;
}
.quote cite{
  display:block;
  margin-top:14px;
  font-style:normal;
  font-size:13px;
  color:var(--text-3);
}
.control-list li{
  display:flex;
  gap:16px;
  padding:18px 0;
  border-bottom:1px dashed var(--line);
}
.control-list li:last-child{border-bottom:0;}
.control-list b{
  flex:0 0 auto;
  width:34px;height:34px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  background:rgba(30,200,255,0.1);
  border:1px solid rgba(30,200,255,0.32);
  color:var(--main);
  font-size:13px;
  font-variant-numeric:tabular-nums;
}
.control-list h3{
  font-size:16px;
  font-weight:600;
  margin-bottom:6px;
}
.control-list p{
  font-size:14.5px;
  color:var(--text-2);
  margin:0;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(18,26,44,0.45);
  backdrop-filter:blur(16px) saturate(140%);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item.open{
  border-color:rgba(30,200,255,0.5);
  box-shadow:0 20px 44px -32px rgba(30,200,255,0.7);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  padding:20px 24px;
  background:transparent;
  border:0;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  transition:color 180ms var(--ease);
}
.faq-q:hover{color:var(--main);}
.faq-num{
  flex:0 0 auto;
  font-size:13px;
  font-weight:700;
  color:var(--tip);
  font-variant-numeric:tabular-nums;
  text-shadow:0 0 14px rgba(198,255,79,0.6);
  letter-spacing:0.05em;
}
.faq-text{flex:1 1 auto;}
.faq-icon{
  flex:0 0 auto;
  width:22px;height:22px;
  position:relative;
  transition:transform 220ms var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--main);
  border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows 220ms var(--ease);
}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a-inner p{
  padding:0 24px 22px 64px;
  margin:0;
  font-size:14.5px;
  line-height:1.85;
  color:var(--text-2);
}

/* ---------- 相关分类推荐 ---------- */
.rec-grid{margin-left:-12px;margin-right:-12px;}
.rec-grid > .cell{padding-left:12px;padding-right:12px;margin-left:0;margin-right:0;}
.rec-card{
  display:block;
  height:100%;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(140%);
  overflow:hidden;
  color:var(--text);
  box-shadow:var(--shadow-soft);
  transition:transform 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
  margin-bottom:24px;
}
.rec-card:hover{
  color:var(--text);
  transform:translateY(-4px);
  border-color:rgba(30,200,255,0.55);
  box-shadow:var(--shadow-lift);
}
.rec-card figure{margin:0;overflow:hidden;}
.rec-card img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform 240ms var(--ease);
}
.rec-card:hover img{transform:scale(1.03);}
.rec-body{padding:20px 22px 22px;}
.rec-body .tag{margin-bottom:12px;}
.rec-body h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:8px;
}
.rec-body p{
  font-size:14.5px;
  color:var(--text-2);
  margin:0 0 14px;
}
.rec-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--main);
}
.rec-more svg{width:15px;height:15px;}

/* ---------- CTA 条 ---------- */
.cta-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  border-radius:var(--radius-card);
  border:1px solid var(--line-strong);
  background:linear-gradient(120deg,rgba(18,26,44,0.85),rgba(10,16,32,0.72));
  backdrop-filter:blur(16px) saturate(140%);
  padding:32px 34px;
  box-shadow:var(--shadow-soft);
  position:relative;
  overflow:hidden;
}
.cta-bar::before{
  content:"";
  position:absolute;
  top:-40%;
  right:-6%;
  width:280px;
  height:280px;
  background:rgba(30,200,255,0.12);
  transform:rotate(45deg);
  pointer-events:none;
}
.cta-bar h2{
  font-size:24px;
  margin-bottom:8px;
}
.cta-bar p{
  margin:0;
  font-size:14.5px;
  color:var(--text-2);
}
.cta-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  position:relative;
  z-index:1;
}
.icon-btn{
  width:48px;
  height:48px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line-strong);
  background:rgba(10,16,32,0.7);
  color:var(--text-2);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:transform 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease);
}
.icon-btn:hover{
  color:var(--main);
  border-color:var(--main);
  transform:translateY(-2px);
}
.icon-btn svg{width:20px;height:20px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-3);
  border-top:1px solid rgba(30,200,255,0.18);
  padding:72px 0 32px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line);
}
.footer-brand p{
  margin:16px 0 0;
  font-size:14px;
  color:var(--text-2);
  max-width:260px;
}
.footer-col h3{
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
  color:var(--text);
}
.footer-col ul li{
  margin-bottom:12px;
  font-size:14px;
  color:var(--text-2);
}
.footer-col ul li a{color:var(--text-2);}
.footer-col ul li a:hover{color:var(--main);border-bottom:2px solid var(--main);}
.footer-social{
  display:flex;
  gap:12px;
  margin-top:16px;
}
.footer-social a{
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid var(--line);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--text-2);
  transition:color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease);
}
.footer-social a:hover{
  color:var(--main);
  border-color:var(--main);
  transform:translateY(-2px);
}
.footer-social svg{width:19px;height:19px;}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  flex-wrap:wrap;
  padding-top:26px;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--main);}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  .container{max-width:1280px;}
}
@media (max-width:1023px){
  :root{--section-pad:72px;}
  .nav-links{
    position:fixed;
    inset:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:96px 24px 40px;
    background:rgba(5,7,14,0.96);
    backdrop-filter:blur(20px) saturate(140%);
    opacity:0;
    visibility:hidden;
    transform:translateY(-12px);
    transition:opacity 200ms var(--ease),transform 200ms var(--ease),visibility 200ms var(--ease);
    z-index:70;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-links a{
    line-height:52px;
    height:52px;
    padding:0 4px;
    border-radius:0;
    border-bottom:1px solid var(--line);
    font-size:17px;
    color:var(--text);
  }
  .nav-links a.active{background:transparent;}
  .nav-burger{display:inline-flex;align-items:center;justify-content:center;}
  .nav-search{display:none;}
  .cat-hero{padding:140px 0 72px;}
  .cat-hero .container{grid-template-columns:1fr;gap:36px;}
  .cat-hero h1{font-size:38px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:18px;}
  .section-head .head-note{text-align:left;max-width:100%;}
  .control-wrap{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-bar{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  .cat-hero h1{font-size:32px;}
  .cat-hero-lead{font-size:15.5px;}
  .section-head h2{font-size:24px;}
  .week-row{grid-template-columns:1fr 1fr;gap:10px 16px;padding:18px 20px;}
  .week-desc{grid-column:1 / -1;}
  .step-card{padding:24px 22px;}
  .faq-q{padding:18px 18px;font-size:15px;}
  .faq-a-inner p{padding:0 18px 20px 56px;}
  .cta-bar{padding:26px 22px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:639px){
  :root{--section-pad:52px;}
  .container{padding:0 18px;}
  .cat-hero{padding:122px 0 56px;}
  .cat-hero h1{font-size:30px;line-height:1.28;}
  .cat-hero-actions{gap:10px;}
  .cat-hero-actions .btn{width:100%;}
  .cat-hero-stats{grid-template-columns:1fr 1fr;}
  .section-head h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}

/* roulang page: category3 */
:root{
  --bg:#05070E;
  --surface:#0A1020;
  --surface-2:rgba(18,26,44,.55);
  --primary:#1EC8FF;
  --primary-deep:#0B83C8;
  --accent:#FF7A3C;
  --lime:#C6FF4F;
  --text:#EAF2FF;
  --muted:#9FB2CC;
  --dim:#64748B;
  --line:rgba(127,178,232,.14);
  --line-strong:rgba(127,178,232,.28);
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --sh-soft:0 18px 44px -28px rgba(3,8,20,.9);
  --sh-glow:0 8px 30px -8px rgba(30,200,255,.6);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec-y:96px;
  --gap:24px;
}

*,*::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:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',system-ui,-apple-system,'Helvetica Neue',sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(127,178,232,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(127,178,232,.04) 1px,transparent 1px);
  background-size:64px 64px;
}
body::after{
  content:"";
  position:fixed;
  top:-20vh;
  right:-10vw;
  width:70vw;
  height:70vh;
  pointer-events:none;
  z-index:0;
  background:linear-gradient(135deg,rgba(30,200,255,.06),transparent 62%);
  transform:skewX(-18deg);
  filter:blur(2px);
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color 180ms var(--ease)}
a:hover{color:var(--primary)}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:-.01em}
h1{font-size:clamp(30px,4.4vw,50px);font-weight:800;letter-spacing:-.02em}
h2{font-size:clamp(23px,2.6vw,30px);font-weight:700}
h3{font-size:clamp(17px,1.7vw,20px);font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:2;
}
@media (min-width:1440px){ .container{max-width:1280px} }

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  background:rgba(6,10,20,.35);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background 200ms var(--ease),box-shadow 200ms var(--ease);
}
.site-header.is-stuck{
  background:rgba(5,7,14,.94);
  box-shadow:0 18px 40px -28px rgba(0,0,0,.95);
  border-bottom-color:var(--line-strong);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:74px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:36px;height:36px;
  border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:var(--sh-glow);
}
.logo-mark svg{width:20px;height:20px}
.logo-text{
  font-size:19px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--text);
}
.logo-text sup{
  font-size:11px;
  font-weight:600;
  margin-left:5px;
  padding:2px 7px;
  border-radius:var(--r-pill);
  background:rgba(198,255,79,.12);
  border:1px solid rgba(198,255,79,.45);
  color:var(--lime);
  vertical-align:super;
  letter-spacing:0;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  padding:9px 14px;
  font-size:15px;
  color:var(--muted);
  border-radius:var(--r-btn);
  transition:color 180ms var(--ease),background 180ms var(--ease);
}
.nav-links a:hover{color:var(--text);background:rgba(30,200,255,.08)}
.nav-links a.active{color:var(--text);background:rgba(30,200,255,.12)}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:3px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;
  gap:6px;
  height:40px;
  padding:0 6px 0 14px;
  border-radius:var(--r-pill);
  background:rgba(18,26,44,.6);
  border:1px solid var(--line);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(30,200,255,.16)}
.nav-search input{
  width:158px;
  border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--dim)}
.nav-search button{
  width:30px;height:30px;
  display:grid;place-items:center;
  border:0;border-radius:50%;
  background:rgba(30,200,255,.12);
  color:var(--primary);
  cursor:pointer;
  transition:background 180ms var(--ease),transform 180ms var(--ease);
}
.nav-search button:hover{background:rgba(30,200,255,.24);transform:translateY(-1px)}
.nav-search svg{width:16px;height:16px}
.nav-burger{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:rgba(18,26,44,.6);
  cursor:pointer;
  position:relative;
}
.nav-burger span,
.nav-burger span::before,
.nav-burger span::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--text);
  transform:translate(-50%,-50%);
  transition:transform 200ms var(--ease),opacity 200ms var(--ease);
}
.nav-burger span::before{transform:translate(-50%,-7px)}
.nav-burger span::after{transform:translate(-50%,7px)}
.nav-burger.is-open span{background:transparent}
.nav-burger.is-open span::before{transform:translate(-50%,-50%) rotate(45deg)}
.nav-burger.is-open span::after{transform:translate(-50%,-50%) rotate(-45deg)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform 180ms var(--ease),box-shadow 200ms var(--ease),background 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04121F;
  box-shadow:var(--sh-glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px -10px rgba(30,200,255,.72);color:#04121F}
.btn-ghost{
  background:rgba(18,26,44,.5);
  border-color:var(--line-strong);
  color:var(--primary);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--primary);color:var(--primary)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- Badges / pills ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  font-weight:600;
  line-height:1.6;
  border:1px solid var(--line-strong);
  color:var(--muted);
  background:rgba(18,26,44,.5);
}
.badge-lime{border-color:rgba(198,255,79,.45);color:var(--lime);background:rgba(198,255,79,.08)}
.badge-accent{border-color:rgba(255,122,60,.5);color:var(--accent);background:rgba(255,122,60,.1)}
.badge-primary{border-color:rgba(30,200,255,.5);color:var(--primary);background:rgba(30,200,255,.1)}
.num-pill{
  display:inline-grid;place-items:center;
  min-width:38px;height:38px;
  padding:0 10px;
  border-radius:var(--r-pill);
  font-family:Inter,'PingFang SC',sans-serif;
  font-variant-numeric:tabular-nums;
  font-weight:700;
  font-size:15px;
  color:#04121F;
  background:linear-gradient(135deg,var(--lime),#9BE23A);
}

/* ---------- Sections ---------- */
.section{padding:var(--sec-y) 0;position:relative}
.section + .section{border-top:1px solid rgba(127,178,232,.08)}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.sec-head .sec-titles{display:flex;align-items:flex-start;gap:14px}
.sec-head p{color:var(--muted);font-size:15px;max-width:560px;margin-top:8px}
.sec-kicker{
  font-size:13px;
  color:var(--primary);
  letter-spacing:.08em;
  font-weight:600;
  text-transform:uppercase;
  font-family:Inter,sans-serif;
}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--primary);
  border-bottom:2px solid transparent;
  transition:border-color 160ms var(--ease),color 160ms var(--ease);
}
.text-link:hover{border-bottom-color:var(--primary)}

/* ---------- Category banner ---------- */
.cat-banner{
  position:relative;
  padding:160px 0 72px;
  overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
}
.cat-banner::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,14,.78) 0%,rgba(5,7,14,.9) 55%,var(--bg) 100%);
}
.cat-banner::after{
  content:"";
  position:absolute;
  right:-6%;bottom:-30%;
  width:58%;height:130%;
  background:linear-gradient(135deg,rgba(30,200,255,.14),transparent 65%);
  transform:skewX(-16deg);
  pointer-events:none;
}
.cat-banner .container{position:relative;z-index:2}
.crumbs{
  display:flex;align-items:center;gap:10px;
  font-size:13.5px;color:var(--dim);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{opacity:.6}
.cat-banner h1{max-width:820px;margin-bottom:20px}
.cat-banner h1 em{
  font-style:normal;
  background:linear-gradient(135deg,var(--primary),var(--lime));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.cat-lead{
  max-width:660px;
  color:var(--muted);
  font-size:16.5px;
  line-height:1.85;
}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.banner-stats{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;
  margin-top:40px;
  max-width:720px;
}
.stat{
  padding:18px 20px;
  border-radius:var(--r-card);
  background:var(--surface-2);
  border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.stat b{
  display:block;
  font-family:Inter,'PingFang SC',sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:26px;
  font-weight:800;
  color:var(--lime);
  letter-spacing:-.01em;
}
.stat span{font-size:13.5px;color:var(--muted)}

/* ---------- Spec cards (left image / right params) ---------- */
.spec-list{display:grid;gap:26px}
.spec-card{
  display:grid;
  grid-template-columns:minmax(0,42%) minmax(0,1fr);
  gap:0;
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--surface-2);
  border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--sh-soft);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.spec-card:hover{
  transform:translateY(-4px);
  border-color:rgba(30,200,255,.5);
  box-shadow:0 24px 54px -30px rgba(30,200,255,.5);
}
.spec-media{position:relative;min-height:100%;background:var(--surface)}
.spec-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.spec-media .badge{position:absolute;top:16px;left:16px;background:rgba(5,7,14,.7)}
.spec-body{padding:26px 28px;display:flex;flex-direction:column;gap:16px}
.spec-body > p{color:var(--muted);font-size:15px;line-height:1.8}
.spec-rows{display:grid;gap:10px;margin:0}
.spec-rows .row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:9px 0;
  border-bottom:1px dashed rgba(127,178,232,.16);
}
.spec-rows .row:last-child{border-bottom:0}
.spec-rows dt{font-size:14px;color:var(--dim)}
.spec-rows dd{
  margin:0;
  font-family:Inter,'PingFang SC',sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:15px;
  font-weight:600;
  color:var(--text);
  letter-spacing:.01em;
}
.spec-rows dd .unit{font-size:12.5px;color:var(--dim);margin-left:4px;font-weight:500}
.spec-foot{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-top:2px}

/* ---------- Compare table ---------- */
.table-scroll{
  overflow-x:auto;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--surface-2);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.cmp-table{min-width:760px;font-size:14.5px}
.cmp-table th,.cmp-table td{
  padding:16px 20px;
  text-align:left;
  border-bottom:1px solid rgba(127,178,232,.12);
  white-space:nowrap;
}
.cmp-table thead th{
  font-size:13.5px;
  color:var(--primary);
  font-weight:700;
  letter-spacing:.03em;
  background:rgba(30,200,255,.06);
}
.cmp-table tbody th{
  font-weight:600;
  color:var(--muted);
  font-size:14px;
}
.cmp-table td{
  font-family:Inter,'PingFang SC',sans-serif;
  font-variant-numeric:tabular-nums;
  font-weight:600;
  color:var(--text);
}
.cmp-table tbody tr:last-child th,
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody tr:hover{background:rgba(30,200,255,.05)}

/* ---------- Three-part grid ---------- */
.tri-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--gap);
}
.tri-card{
  padding:26px 24px;
  border-radius:var(--r-card);
  background:var(--surface-2);
  border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.tri-card:hover{transform:translateY(-4px);border-color:rgba(30,200,255,.45);box-shadow:0 22px 48px -30px rgba(30,200,255,.45)}
.tri-card h3{margin:16px 0 10px}
.tri-card p{color:var(--muted);font-size:14.8px;line-height:1.8}
.tri-card ul{margin-top:14px;display:grid;gap:8px}
.tri-card li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--muted);
}
.tri-card li::before{
  content:"";
  position:absolute;left:0;top:11px;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--primary);
  transform:rotate(45deg);
}

/* ---------- Scene list ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:var(--gap);
}
.scene-item{
  display:flex;
  gap:18px;
  padding:22px 24px;
  border-radius:var(--r-card);
  background:var(--surface-2);
  border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease);
}
.scene-item:hover{transform:translateY(-4px);border-color:rgba(30,200,255,.45)}
.scene-item .scene-icon{
  flex:0 0 auto;
  width:46px;height:46px;
  border-radius:13px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(30,200,255,.22),rgba(11,131,200,.16));
  border:1px solid rgba(30,200,255,.3);
  color:var(--primary);
  font-size:18px;
}
.scene-item h3{font-size:17px;margin-bottom:6px}
.scene-item p{color:var(--muted);font-size:14.6px;line-height:1.8}

/* ---------- Related categories ---------- */
.rel-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:var(--gap);
}
.rel-card{
  position:relative;
  display:block;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface);
  aspect-ratio:4/3;
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(30,200,255,.5);box-shadow:0 24px 50px -30px rgba(30,200,255,.5)}
.rel-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55;transition:opacity 220ms var(--ease)}
.rel-card:hover img{opacity:.72}
.rel-card .rel-body{
  position:absolute;inset:0;
  padding:20px;
  display:flex;flex-direction:column;justify-content:flex-end;gap:8px;
  background:linear-gradient(180deg,rgba(5,7,14,.15),rgba(5,7,14,.86));
}
.rel-card h3{font-size:17px;color:var(--text)}
.rel-card span{font-size:13px;color:var(--muted)}
.rel-card .rel-arrow{
  position:absolute;top:16px;right:16px;
  width:30px;height:30px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(5,7,14,.6);
  border:1px solid var(--line-strong);
  color:var(--primary);
  font-size:13px;
}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{
  border-radius:var(--r-card);
  background:var(--surface-2);
  border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  overflow:hidden;
  transition:border-color 200ms var(--ease);
}
.faq-item.is-open{border-color:rgba(30,200,255,.45)}
.faq-q{
  width:100%;
  display:flex;align-items:center;gap:16px;
  padding:20px 22px;
  background:transparent;
  border:0;
  text-align:left;
  cursor:pointer;
  color:var(--text);
  font-size:16px;
  font-weight:600;
}
.faq-q .q-idx{
  flex:0 0 auto;
  width:30px;height:30px;
  border-radius:var(--r-pill);
  display:grid;place-items:center;
  font-size:13px;
  font-family:Inter,sans-serif;
  font-variant-numeric:tabular-nums;
  color:var(--lime);
  border:1px solid rgba(198,255,79,.45);
  background:rgba(198,255,79,.08);
  box-shadow:0 0 16px -6px rgba(198,255,79,.6);
}
.faq-q .q-text{flex:1 1 auto}
.faq-q .q-icon{
  flex:0 0 auto;
  width:26px;height:26px;
  position:relative;
  transition:transform 220ms var(--ease);
}
.faq-q .q-icon::before,
.faq-q .q-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .q-icon::before{width:14px;height:2px}
.faq-q .q-icon::after{width:2px;height:14px}
.faq-item.is-open .q-icon{transform:rotate(45deg)}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows 220ms var(--ease);
}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a > div{overflow:hidden}
.faq-a p{
  padding:0 22px 22px 68px;
  color:var(--muted);
  font-size:15px;
  line-height:1.85;
}

/* ---------- CTA bar ---------- */
.cta-bar{
  margin:0 auto;
  padding:0 0 var(--sec-y);
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:34px 36px;
  border-radius:var(--r-card);
  background:
    linear-gradient(135deg,rgba(30,200,255,.14),rgba(11,131,200,.06) 55%,transparent),
    var(--surface-2);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--sh-soft);
}
.cta-inner h2{font-size:24px;margin-bottom:8px}
.cta-inner p{color:var(--muted);font-size:15px;max-width:520px}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.icon-btn{
  width:48px;height:48px;
  display:grid;place-items:center;
  border-radius:var(--r-btn);
  border:1px solid var(--line-strong);
  background:rgba(18,26,44,.6);
  color:var(--muted);
  cursor:pointer;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease);
}
.icon-btn:hover{transform:translateY(-2px);border-color:var(--primary);color:var(--primary)}

/* ---------- Footer ---------- */
.site-footer{
  background:#03050B;
  border-top:1px solid rgba(30,200,255,.18);
  padding:64px 0 28px;
  position:relative;
  z-index:2;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:36px;
  border-bottom:1px solid rgba(127,178,232,.1);
}
.footer-brand p{color:var(--muted);font-size:14.5px;margin-top:16px;max-width:260px}
.footer-col h3{
  font-size:15px;
  color:var(--text);
  margin-bottom:16px;
  font-weight:600;
}
.footer-col ul{display:grid;gap:11px}
.footer-col li a,.footer-col li span{font-size:14.5px;color:var(--muted)}
.footer-col li a:hover{color:var(--primary)}
.footer-social{display:flex;gap:10px;margin-top:16px}
.footer-social a{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:11px;
  border:1px solid var(--line);
  background:rgba(18,26,44,.5);
  color:var(--muted);
  transition:transform 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease);
}
.footer-social a:hover{transform:translateY(-2px);color:var(--primary);border-color:rgba(30,200,255,.5)}
.footer-social svg{width:19px;height:19px}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  padding-top:22px;
  font-size:13.5px;
  color:var(--dim);
}
.footer-bottom .fb-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a{color:var(--dim)}
.footer-bottom a:hover{color:var(--primary)}

/* ---------- Mobile drawer ---------- */
.drawer{
  position:fixed;inset:0;
  z-index:120;
  background:rgba(5,7,14,.92);
  backdrop-filter:blur(22px) saturate(140%);
  -webkit-backdrop-filter:blur(22px) saturate(140%);
  transform:translateY(-100%);
  transition:transform 260ms var(--ease);
  padding:96px 24px 40px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0)}
.drawer-close{
  position:absolute;top:20px;right:20px;
  width:44px;height:44px;
  border-radius:var(--r-btn);
  border:1px solid var(--line-strong);
  background:rgba(18,26,44,.6);
  color:var(--text);
  font-size:20px;
  cursor:pointer;
}
.drawer nav{display:grid;gap:4px}
.drawer nav a{
  display:flex;align-items:center;
  min-height:52px;
  padding:0 12px;
  font-size:17px;
  color:var(--muted);
  border-bottom:1px solid rgba(127,178,232,.1);
}
.drawer nav a.active{color:var(--primary)}
.drawer .drawer-cta{margin-top:26px}

/* ---------- Responsive ---------- */
@media (max-width:1439px){
  .container{max-width:1200px}
}
@media (max-width:1199px){
  .nav-search input{width:120px}
}
@media (max-width:1023px){
  :root{--sec-y:72px}
  .nav-links,.nav-search{display:none}
  .nav-burger{display:block}
  .spec-card{grid-template-columns:minmax(0,1fr)}
  .spec-media img{aspect-ratio:16/9}
  .tri-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cat-banner{padding:140px 0 60px}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:767px){
  :root{--sec-y:58px;--gap:18px}
  .container{padding:0 18px}
  .scene-grid{grid-template-columns:minmax(0,1fr)}
  .tri-grid{grid-template-columns:minmax(0,1fr)}
  .banner-stats{grid-template-columns:1fr 1fr;gap:12px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .spec-body{padding:22px 20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .cta-inner{padding:26px 22px}
  .faq-a p{padding:0 20px 20px 20px}
  .faq-q{padding:18px 18px;font-size:15.5px}
}
@media (max-width:519px){
  :root{--sec-y:52px}
  .container{padding:0 16px}
  .logo-text{font-size:17px}
  .banner-stats{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .cat-banner{padding:126px 0 52px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .icon-btn{width:46px;height:46px}
  .stat b{font-size:23px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category4 */
:root{
  --bg:#05070E;
  --surface:#0A1020;
  --surface-2:#0E1526;
  --primary:#1EC8FF;
  --primary-deep:#0B83C8;
  --accent:#FF7A3C;
  --dot:#C6FF4F;
  --text:#EAF2FF;
  --text-2:#9FB2CC;
  --text-3:#64748B;
  --line:rgba(127,178,232,.16);
  --line-strong:rgba(127,178,232,.32);
  --glass:rgba(18,26,44,.55);
  --glass-2:rgba(18,26,44,.75);
  --r-card:16px;
  --r-btn:10px;
  --r-badge:999px;
  --shadow-soft:0 18px 44px -26px rgba(2,7,18,.95);
  --shadow-lift:0 24px 54px -28px rgba(30,200,255,.42);
  --shadow-glow:0 8px 30px -8px rgba(30,200,255,.6);
  --ease:cubic-bezier(.2,.7,.3,1);
  --w:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(127,178,232,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(127,178,232,.04) 1px,transparent 1px);
  background-size:48px 48px;
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',system-ui,-apple-system,'Helvetica Neue',sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none;transition:color 180ms var(--ease),background-color 180ms var(--ease),border-color 180ms var(--ease)}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
::selection{background:rgba(30,200,255,.3);color:#fff}

.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 24px}
@media (min-width:1440px){:root{--w:1280px}}

/* ---------- header ---------- */
.site-header{
  position:absolute;top:0;left:0;right:0;z-index:60;
  background:rgba(6,10,20,.35);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background-color 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.site-header.is-stuck{
  position:fixed;
  background:rgba(5,7,14,.92);
  box-shadow:0 16px 40px -28px rgba(0,0,0,.95);
  border-bottom-color:var(--line-strong);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:78px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  display:grid;place-items:center;
  box-shadow:0 8px 24px -12px rgba(30,200,255,.8);
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--text)}
.logo-text sup{
  font-size:10px;font-weight:600;line-height:1;margin-left:4px;vertical-align:super;
  padding:3px 6px;border-radius:var(--r-badge);
  color:var(--dot);background:rgba(198,255,79,.12);border:1px solid rgba(198,255,79,.36);
}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:var(--r-badge);
  font-size:15px;color:var(--text-2);border:1px solid transparent;
}
.nav-links a:hover{color:var(--text);background:rgba(127,178,232,.1)}
.nav-links a.active{color:var(--text);background:rgba(30,200,255,.12);border-color:rgba(30,200,255,.32)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:4px;height:40px;padding:0 6px 0 14px;
  border:1px solid var(--line);border-radius:var(--r-badge);
  background:rgba(10,16,32,.6);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(30,200,255,.16)}
.nav-search input{
  width:150px;height:100%;border:0;background:transparent;outline:none;font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search button{
  width:30px;height:30px;border:0;border-radius:50%;cursor:pointer;
  background:rgba(30,200,255,.14);color:var(--primary);display:grid;place-items:center;
  transition:background-color 180ms var(--ease);
}
.nav-search button:hover{background:rgba(30,200,255,.28)}
.nav-search svg{width:16px;height:16px}
.nav-burger{
  display:none;width:42px;height:42px;border-radius:12px;cursor:pointer;
  border:1px solid var(--line);background:rgba(18,26,44,.55);position:relative;
}
.nav-burger span,.nav-burger span::before,.nav-burger span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--text);border-radius:2px;
  transform:translateX(-50%);transition:transform 200ms var(--ease),opacity 200ms var(--ease);
}
.nav-burger span{top:50%;margin-top:-1px}
.nav-burger span::before{content:'';left:0;transform:none;top:-6px}
.nav-burger span::after{content:'';left:0;transform:none;top:6px}
.nav-close{display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background-color 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04121F;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px -10px rgba(30,200,255,.75)}
.btn-glass{
  background:rgba(18,26,44,.55);border-color:var(--line-strong);color:var(--primary);
  backdrop-filter:blur(16px) saturate(140%);
}
.btn-glass:hover{transform:translateY(-2px);border-color:var(--primary);color:var(--text)}
.btn-ghost{border-color:var(--line-strong);color:var(--text-2);background:transparent}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn:active{transform:translateY(0)}

/* ---------- badges / tags ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--r-badge);font-size:12.5px;font-weight:600;letter-spacing:.02em;
  border:1px solid rgba(198,255,79,.36);color:var(--dot);background:rgba(198,255,79,.1);
}
.badge-blue{border-color:rgba(30,200,255,.4);color:var(--primary);background:rgba(30,200,255,.1)}
.badge-orange{border-color:rgba(255,122,60,.42);color:var(--accent);background:rgba(255,122,60,.1)}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-badge);
  font-size:13px;color:var(--text-2);border:1px solid var(--line);background:rgba(18,26,44,.5);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  letter-spacing:.08em;color:var(--primary);text-transform:none;
}
.eyebrow::before{content:'';width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),transparent)}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:150px 0 76px;border-bottom:1px solid var(--line)}
.page-hero .hero-bg{position:absolute;inset:0;z-index:0}
.page-hero .hero-bg img{width:100%;height:100%;opacity:.34}
.page-hero::before{
  content:'';position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(5,7,14,.72) 0%,rgba(5,7,14,.86) 55%,var(--bg) 100%);
}
.page-hero::after{
  content:'';position:absolute;top:-10%;right:-8%;width:56%;height:130%;z-index:1;
  background:linear-gradient(115deg,rgba(30,200,255,.14) 0%,rgba(30,200,255,0) 62%);
  clip-path:polygon(28% 0,100% 0,100% 100%,0 100%);
  pointer-events:none;
}
.page-hero-inner{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--text-3);margin-bottom:26px}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span[aria-current]{color:var(--text-2)}
.crumb-sep{color:var(--text-3);opacity:.6}
.page-hero h1{
  font-size:clamp(30px,4.4vw,50px);font-weight:800;letter-spacing:-.02em;
  max-width:880px;margin:14px 0 18px;
}
.hero-lead{max-width:680px;font-size:16.5px;color:var(--text-2);line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}
.stat{
  min-width:158px;padding:16px 20px;border-radius:14px;
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
}
.stat b{display:block;font-size:27px;font-weight:800;color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.stat span{display:block;font-size:13px;color:var(--text-3);margin-top:2px}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section-alt{background:linear-gradient(180deg,rgba(10,16,32,.55),rgba(5,7,14,0));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:44px}
.sec-head h2{font-size:clamp(23px,2.6vw,30px);font-weight:700}
.sec-head p{margin-top:12px;color:var(--text-2);font-size:15px;max-width:620px}
.sec-index{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
  color:var(--dot);border:1px solid rgba(198,255,79,.36);background:rgba(198,255,79,.1);
  padding:3px 11px;border-radius:var(--r-badge);margin-bottom:14px;
}
.sec-link{color:var(--primary);font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.sec-link:hover{color:var(--text)}
.sec-link::after{content:'→';font-size:14px}

/* ---------- timeline ---------- */
.timeline{display:flex;flex-direction:column;gap:22px}
.tl-item{display:grid;grid-template-columns:132px 30px minmax(0,1fr);align-items:stretch}
.tl-marker{padding-top:24px;text-align:right;font-size:13px;color:var(--text-3);letter-spacing:.02em}
.tl-node{position:relative}
.tl-node::before{
  content:'';position:absolute;left:50%;top:0;bottom:0;width:2px;transform:translateX(-50%);
  background:linear-gradient(180deg,rgba(30,200,255,.45),rgba(127,178,232,.12));
}
.tl-item:first-child .tl-node::before{top:30px}
.tl-item:last-child .tl-node::before{height:30px;bottom:auto}
.tl-node::after{
  content:'';position:absolute;left:50%;top:24px;width:14px;height:14px;border-radius:50%;
  transform:translateX(-50%);background:#05070E;border:2px solid var(--primary);
  box-shadow:0 0 0 4px rgba(30,200,255,.14);
  transition:box-shadow 200ms var(--ease);
}
.tl-card{
  padding:22px 24px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow-soft);
  transition:transform 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.tl-item:hover .tl-card{transform:translateY(-4px);border-color:rgba(30,200,255,.5);box-shadow:var(--shadow-lift)}
.tl-item:hover .tl-node::after{box-shadow:0 0 0 6px rgba(30,200,255,.2)}
.tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px}
.tl-head time{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}
.tl-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.tl-card p{font-size:14.5px;color:var(--text-2);line-height:1.75}
.tl-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tl-points li{
  font-size:12.5px;color:var(--text-2);padding:4px 12px;border-radius:var(--r-badge);
  border:1px solid var(--line);background:rgba(10,16,32,.55);
}

/* ---------- channel list ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.channel{
  display:flex;gap:18px;padding:22px 24px;border-radius:var(--r-card);
  background:rgba(10,16,32,.6);border:1px solid var(--line);
  transition:transform 200ms var(--ease),border-color 200ms var(--ease),background-color 200ms var(--ease);
}
.channel:hover{transform:translateY(-4px);border-color:rgba(30,200,255,.45);background:rgba(18,26,44,.72)}
.channel-icon{
  width:44px;height:44px;flex-shrink:0;border-radius:12px;display:grid;place-items:center;
  background:rgba(30,200,255,.12);border:1px solid rgba(30,200,255,.3);color:var(--primary);
}
.channel-icon svg{width:20px;height:20px}
.channel h3{font-size:17px;font-weight:600;margin-bottom:6px}
.channel p{font-size:14.5px;color:var(--text-2);line-height:1.75}

/* ---------- category tiles ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.cat-tile{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  transition:transform 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.cat-tile:hover{transform:translateY(-4px);border-color:rgba(30,200,255,.5);box-shadow:var(--shadow-lift)}
.cat-thumb{position:relative;aspect-ratio:4/3;overflow:hidden}
.cat-thumb img{width:100%;height:100%;transition:transform 260ms var(--ease)}
.cat-tile:hover .cat-thumb img{transform:scale(1.04)}
.cat-thumb::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,14,0),rgba(5,7,14,.72))}
.cat-num{
  position:absolute;top:12px;left:12px;z-index:2;width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;font-size:12.5px;font-weight:700;color:#04121F;
  background:var(--dot);
}
.cat-body{padding:18px 20px 22px}
.cat-body h3{font-size:17px;font-weight:600;margin-bottom:8px}
.cat-body p{font-size:13.5px;color:var(--text-2);line-height:1.7}
.cat-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13.5px;font-weight:600;color:var(--primary)}
.cat-tile:hover .cat-more{color:var(--text)}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{
  border-radius:var(--r-card);border:1px solid var(--line);background:rgba(10,16,32,.6);
  overflow:hidden;transition:border-color 200ms var(--ease),background-color 200ms var(--ease);
}
.faq-item.open{border-color:rgba(30,200,255,.5);background:rgba(18,26,44,.72)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;padding:20px 22px;
  background:transparent;border:0;cursor:pointer;font-size:16.5px;font-weight:600;color:var(--text);
}
.faq-no{
  flex-shrink:0;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;
  font-size:13px;font-weight:700;color:var(--dot);background:rgba(198,255,79,.1);
  border:1px solid rgba(198,255,79,.32);box-shadow:0 0 16px -4px rgba(198,255,79,.5);
}
.faq-q span.q-text{flex:1}
.faq-sign{
  position:relative;flex-shrink:0;width:20px;height:20px;
  transition:transform 220ms var(--ease);color:var(--primary);
}
.faq-sign::before,.faq-sign::after{
  content:'';position:absolute;background:currentColor;border-radius:2px;
}
.faq-sign::before{left:0;top:9px;width:20px;height:2px}
.faq-sign::after{top:0;left:9px;width:2px;height:20px}
.faq-item.open .faq-sign{transform:rotate(45deg)}
.faq-panel{display:grid;grid-template-rows:0fr;transition:grid-template-rows 220ms var(--ease)}
.faq-item.open .faq-panel{grid-template-rows:1fr}
.faq-panel-inner{overflow:hidden}
.faq-panel p{padding:0 22px 22px 68px;font-size:14.5px;color:var(--text-2);line-height:1.8}

/* ---------- cta bar ---------- */
.cta-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  padding:32px 34px;border-radius:20px;
  background:linear-gradient(120deg,rgba(18,26,44,.85),rgba(11,131,200,.18));
  border:1px solid var(--line-strong);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow-soft);
}
.cta-bar h2{font-size:clamp(20px,2.3vw,26px);font-weight:700;margin-bottom:10px}
.cta-bar p{font-size:14.5px;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.icon-btn{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 18px;border-radius:var(--r-btn);
  border:1px solid var(--line-strong);background:rgba(10,16,32,.6);color:var(--text-2);
  font-size:14px;font-weight:600;cursor:pointer;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease);
}
.icon-btn:hover{transform:translateY(-2px);border-color:var(--primary);color:var(--primary)}
.icon-btn svg{width:17px;height:17px}

/* ---------- footer ---------- */
.site-footer{
  background:#03050B;border-top:1px solid rgba(30,200,255,.22);
  padding:72px 0 26px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:260px;line-height:1.75}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:18px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col li a,.footer-col li span{font-size:14px;color:var(--text-2)}
.footer-col li a:hover{color:var(--primary)}
.footer-social{display:flex;gap:12px;margin-top:18px}
.footer-social a{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);background:rgba(18,26,44,.55);color:var(--text-2);
}
.footer-social a:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.footer-social svg{width:19px;height:19px}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom a:hover{color:var(--primary)}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 20px}
  .section{padding:72px 0}
  .page-hero{padding:132px 0 62px}
  .nav-links{
    position:fixed;inset:0;z-index:80;flex-direction:column;align-items:stretch;gap:0;
    padding:88px 24px 32px;background:rgba(5,7,14,.97);
    backdrop-filter:blur(18px);opacity:0;pointer-events:none;transform:translateY(-8px);
    transition:opacity 200ms var(--ease),transform 200ms var(--ease);
  }
  .nav-links.open{opacity:1;pointer-events:auto;transform:none}
  .nav-links a{height:52px;padding:0 16px;font-size:17px;border-radius:12px}
  .nav-close{
    display:grid;place-items:center;position:absolute;top:22px;right:22px;
    width:42px;height:42px;border-radius:12px;cursor:pointer;
    border:1px solid var(--line);background:rgba(18,26,44,.7);color:var(--text);font-size:20px;line-height:1;
  }
  .nav-search{display:none}
  .nav-actions .btn-primary{display:none}
  .nav-burger{display:block}
  .timeline{padding-left:0}
  .tl-item{grid-template-columns:22px minmax(0,1fr);gap:0 16px}
  .tl-marker{display:none}
  .channel-grid{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .section{padding:52px 0}
  .page-hero{padding:118px 0 50px}
  .page-hero h1{font-size:clamp(28px,8vw,34px)}
  .hero-lead{font-size:15.5px}
  .hero-stats{gap:10px;margin-top:28px}
  .stat{min-width:calc(50% - 5px);flex:1 1 46%;padding:14px 16px}
  .stat b{font-size:23px}
  .sec-head{margin-bottom:30px}
  .tl-card{padding:18px 18px}
  .tl-card h3{font-size:17.5px}
  .cat-grid{grid-template-columns:1fr}
  .faq-q{padding:16px;font-size:15.5px;gap:12px}
  .faq-panel p{padding:0 16px 18px 16px}
  .cta-bar{padding:24px 20px;border-radius:16px}
  .cta-actions{width:100%}
  .cta-actions .icon-btn{flex:1 1 calc(50% - 6px);justify-content:center;padding:0 12px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}