/* roulang page: index */
:root{
  --bg:#070B14;
  --surface:#0B1220;
  --surface-2:#0E1524;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.10);
  --primary:#2EE6C8;
  --primary-hover:#56F0D8;
  --primary-deep:#17B8A2;
  --amber:#FFB454;
  --text:#E8EFF7;
  --text-2:#9AA9BD;
  --text-3:#667E9A;
  --radius-card:16px;
  --radius-panel:22px;
  --radius-pill:999px;
  --glow:0 0 0 1px rgba(46,230,200,.35), 0 8px 28px -8px rgba(46,230,200,.55);
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.04), 0 12px 32px -18px rgba(0,0,0,.8);
  --t:180ms ease;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-num:"Inter","SFMono-Regular",Consolas,"Liberation Mono",monospace;

  --bs-body-bg:#070B14;
  --bs-body-color:#E8EFF7;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-primary:#2EE6C8;
  --bs-link-color:#9AA9BD;
  --bs-link-hover-color:#2EE6C8;
  --bs-body-font-family:var(--font-cn);
  --bs-border-radius:14px;
  --bs-border-radius-lg:16px;
  --bs-border-radius-pill:999px;
}
*{box-sizing:border-box;}
*,*::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-cn);
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--text-2);text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t);}
a:hover{color:var(--primary);}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:-.01em;}
h1{font-size:clamp(2rem,4.6vw,3.5rem);line-height:1.15;font-weight:700;letter-spacing:-.02em;}
h2{font-size:clamp(1.5rem,2.6vw,2.125rem);line-height:1.25;}
h3{font-size:1.25rem;line-height:1.4;font-weight:600;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font:inherit;color:inherit;}
:focus-visible{outline:2px dashed var(--primary);outline-offset:2px;border-radius:4px;}

/* ---------- 容器与板块 ---------- */
.container-x{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head .eyebrow{
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--primary);
  margin-bottom:12px;
  display:block;
}
.section-head p{margin-top:14px;color:var(--text-2);font-size:1rem;}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 背景纹理 ---------- */
.grid-texture{
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1040;
  height:72px;
  display:flex;
  align-items:center;
  background:rgba(7,11,20,.55);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:height var(--t),background var(--t),border-color var(--t);
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(7,11,20,.88);
  border-bottom-color:var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%;}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex:none;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:0 0 0 1px rgba(46,230,200,.35),0 8px 22px -10px rgba(46,230,200,.7);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:11px;border-radius:4px;
  background:rgba(4,18,26,.85);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:16px;font-weight:700;letter-spacing:-.01em;}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.12em;}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
  border-radius:2px;
}
.nav-links a:hover{color:var(--text);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--text);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;border:1px solid var(--line-2);border-radius:12px;
  background:transparent;cursor:pointer;padding:0;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--text);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--text);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle:hover{border-color:rgba(46,230,200,.5);}

/* 移动菜单 */
.mobile-drawer{
  position:fixed;inset:0;z-index:1039;
  background:rgba(7,11,20,.96);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  padding:110px 24px 40px;
  display:flex;flex-direction:column;gap:0;
  transform:translateY(-8px);
  opacity:0;pointer-events:none;
  transition:opacity var(--t),transform var(--t);
}
.mobile-drawer.open{opacity:1;transform:translateY(0);pointer-events:auto;}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 4px;
  font-size:20px;font-weight:600;color:var(--text);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a:hover,.mobile-drawer a.active{color:var(--primary);}
.mobile-drawer .drawer-cta{margin-top:28px;display:block;text-align:center;border:0;}

/* ---------- 按钮 ---------- */
.btn{
  --bs-btn-border-radius:999px;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;
  border-radius:var(--radius-pill);
  padding:12px 26px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
  text-decoration:none;
  line-height:1.4;
}
.btn-glow{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04121A;
  box-shadow:var(--glow);
}
.btn-glow:hover{
  background:linear-gradient(135deg,var(--primary-hover),var(--primary));
  color:#04121A;
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(46,230,200,.45),0 14px 34px -10px rgba(46,230,200,.7);
}
.btn-glow:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;color:var(--text);
  border:1px solid rgba(255,255,255,.18);
}
.btn-ghost:hover{
  color:var(--primary);
  border-color:rgba(46,230,200,.55);
  background:rgba(46,230,200,.08);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:9px 20px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 标签 / 徽章 ---------- */
.badge-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;
  letter-spacing:.02em;
  color:var(--primary);
  background:rgba(46,230,200,.10);
  border:1px solid rgba(46,230,200,.4);
}
.badge-pill.is-amber{
  color:var(--amber);
  background:rgba(255,180,84,.10);
  border-color:rgba(255,180,84,.42);
}
.badge-pill.is-muted{
  color:var(--text-2);
  background:rgba(255,255,255,.05);
  border-color:var(--line-2);
}
.dot{
  width:7px;height:7px;border-radius:50%;background:var(--primary);
  box-shadow:0 0 0 0 rgba(46,230,200,.6);
  animation:pulse 2s infinite;
  flex:none;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(46,230,200,.55);}
  70%{box-shadow:0 0 0 9px rgba(46,230,200,0);}
  100%{box-shadow:0 0 0 0 rgba(46,230,200,0);}
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:150px 0 84px;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:rgba(7,11,20,.86);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
.hero .container-x{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center;min-height:640px;}
.hero-copy .badge-pill{margin-bottom:22px;}
.hero-copy h1{margin-bottom:16px;}
.hero-sub{font-size:clamp(1rem,1.6vw,1.25rem);color:var(--text-2);margin-bottom:22px;}
.hero-desc{color:var(--text-2);max-width:520px;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-cover{
  position:relative;
  border-radius:var(--radius-panel);
  overflow:hidden;
  border:1px solid var(--line-2);
  background:#0E1524;
  box-shadow:var(--shadow-card);
}
.hero-cover img{aspect-ratio:16/9;object-fit:cover;width:100%;}
.hero-cover .glass-tag{
  position:absolute;top:14px;right:14px;
  padding:6px 14px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;color:var(--text);
  background:rgba(14,21,36,.62);
  border:1px solid rgba(255,255,255,.18);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.hero-cover .cover-veil{
  position:absolute;left:0;right:0;bottom:0;
  padding:56px 22px 20px;
  background:linear-gradient(to top,rgba(7,11,20,.95),rgba(7,11,20,.55) 55%,rgba(7,11,20,0));
}
.cover-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:8px;}
.cover-meta span{
  font-family:var(--font-num);
  font-size:12px;letter-spacing:.06em;color:var(--text-2);
}
.cover-title{font-size:1.05rem;font-weight:600;color:var(--text);}

/* ---------- 倒计时条 ---------- */
.countdown-strip{
  margin-top:-36px;
  position:relative;
  z-index:3;
}
.countdown-inner{
  display:flex;align-items:center;gap:28px;flex-wrap:wrap;
  padding:22px 28px;
  border-radius:var(--radius-panel);
  background:rgba(14,21,36,.82);
  border:1px solid var(--line-2);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card),0 0 0 1px rgba(46,230,200,.10);
}
.cd-label{
  font-size:13px;color:var(--text-3);letter-spacing:.08em;
  display:flex;align-items:center;gap:8px;flex:none;
}
.cd-cells{
  display:grid;grid-template-columns:repeat(4,minmax(72px,1fr));
  flex:1 1 420px;
  gap:0;
}
.cd-cell{
  text-align:center;
  padding:4px 8px;
  border-left:1px solid var(--line);
}
.cd-cell:first-child{border-left:0;}
.cd-num{
  display:block;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:clamp(2rem,6vw,4rem);
  line-height:1.05;
  font-weight:700;
  color:var(--primary);
  letter-spacing:-.02em;
}
.cd-unit{display:block;font-size:12px;color:var(--text-3);letter-spacing:.12em;margin-top:4px;}

/* ---------- 看点列表 ---------- */
.hl-list{
  display:grid;grid-template-columns:1fr 1fr;
  gap:0 40px;
  border-top:1px solid var(--line);
}
.hl-item{
  display:grid;
  grid-template-columns:56px 1fr 28px;
  align-items:center;
  gap:16px;
  padding:24px 12px;
  border-bottom:1px solid var(--line);
  transition:background var(--t);
}
.hl-item:hover{background:rgba(255,255,255,.03);}
.hl-item:hover .hl-idx{color:var(--primary);}
.hl-idx{
  font-family:var(--font-num);
  font-size:13px;letter-spacing:.1em;color:var(--text-3);
  transition:color var(--t);
}
.hl-body h3{font-size:1.05rem;margin-bottom:4px;}
.hl-body p{font-size:.9rem;color:var(--text-2);margin:0;}
.hl-arrow{color:var(--text-3);font-size:18px;text-align:right;transition:color var(--t),transform var(--t);}
.hl-item:hover .hl-arrow{color:var(--primary);transform:translateX(3px);}

/* ---------- 订阅表单 ---------- */
.subscribe-card{
  margin-top:0;
  padding:34px;
  border-radius:var(--radius-panel);
  background:rgba(14,21,36,.82);
  border:1px solid var(--line-2);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
  display:grid;
  grid-template-columns:1fr 1.2fr;
  gap:36px;
  align-items:center;
}
.subscribe-card h2{font-size:1.5rem;margin-bottom:10px;}
.subscribe-card p{color:var(--text-2);font-size:.95rem;margin:0;}
.sub-form{display:flex;gap:12px;}
.form-control{
  background:rgba(7,11,20,.75);
  border:1px solid var(--line-2);
  border-radius:var(--radius-pill);
  color:var(--text);
  padding:12px 20px;
  font-size:15px;
  box-shadow:none;
  transition:border-color var(--t),background var(--t);
}
.form-control::placeholder{color:var(--text-3);}
.form-control:focus{
  background:rgba(7,11,20,.95);
  border-color:rgba(46,230,200,.55);
  color:var(--text);
  box-shadow:0 0 0 3px rgba(46,230,200,.12);
}
.privacy-note{font-size:.75rem;color:var(--text-3);margin-top:12px;}
.form-state{margin-top:12px;font-size:.85rem;min-height:20px;}
.form-state.ok{color:var(--primary);}
.form-state.err{color:var(--amber);}

/* ---------- 最新信息（CMS） ---------- */
.news-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.news-card{
  display:flex;flex-direction:column;
  padding:26px;
  border-radius:var(--radius-card);
  background:var(--surface-2);
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-card);
  transition:transform var(--t),border-color var(--t),background var(--t);
}
.news-card:hover{
  transform:translateY(-2px);
  border-color:rgba(46,230,200,.3);
  background:#101A2B;
}
.news-card .meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-bottom:14px;
}
.news-card h3{font-size:1.1rem;margin-bottom:10px;}
.news-card h3 a{color:var(--text);}
.news-card h3 a:hover{color:var(--primary);}
.news-card .excerpt{
  color:var(--text-2);font-size:.92rem;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card .more{
  margin-top:auto;
  font-size:.85rem;font-weight:600;color:var(--text-2);
  display:inline-flex;align-items:center;gap:6px;
}
.news-card .more:hover{color:var(--primary);}
.news-card.is-feature{
  grid-column:span 2;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0;
  padding:0;
  overflow:hidden;
}
.news-card.is-feature .feature-body{padding:32px;display:flex;flex-direction:column;}
.news-card.is-feature .feature-media{position:relative;min-height:260px;}
.news-card.is-feature .feature-media img{
  width:100%;height:100%;object-fit:cover;border-radius:0;
}
.news-card.is-feature .feature-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to right,rgba(14,21,36,.92),rgba(14,21,36,0) 70%);
}
.empty-state{
  padding:56px 24px;
  text-align:center;
  border-radius:var(--radius-card);
  border:1px dashed var(--line-2);
  background:rgba(14,21,36,.55);
}
.empty-state .icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:16px;
  border:1px solid rgba(46,230,200,.35);
  background:rgba(46,230,200,.08);
  display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:22px;
}
.empty-state p{color:var(--text-2);margin-bottom:18px;}

/* ---------- 回放横滚 ---------- */
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
.rail-ctrl{display:flex;gap:10px;}
.rail-btn{
  width:42px;height:42px;border-radius:50%;
  border:1px solid var(--line-2);background:transparent;
  color:var(--text-2);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:border-color var(--t),color var(--t),background var(--t);
}
.rail-btn:hover{border-color:rgba(46,230,200,.5);color:var(--primary);background:rgba(46,230,200,.08);}
.rail{
  display:flex;gap:20px;overflow-x:auto;padding-bottom:14px;
  scroll-behavior:smooth;
  scrollbar-width:thin;
  scrollbar-color:rgba(46,230,200,.35) transparent;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-track{background:rgba(255,255,255,.04);border-radius:999px;}
.rail::-webkit-scrollbar-thumb{background:rgba(46,230,200,.35);border-radius:999px;}
.rail-item{
  flex:0 0 320px;
  border-radius:var(--radius-card);
  background:var(--surface-2);
  border:1px solid var(--line-2);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform var(--t),border-color var(--t);
}
.rail-item:hover{transform:translateY(-2px);border-color:rgba(46,230,200,.3);}
.rail-thumb{position:relative;}
.rail-thumb img{aspect-ratio:16/9;object-fit:cover;width:100%;}
.rail-thumb .dur{
  position:absolute;right:10px;bottom:10px;
  font-family:var(--font-num);font-size:12px;
  padding:3px 10px;border-radius:var(--radius-pill);
  background:rgba(7,11,20,.8);border:1px solid var(--line-2);color:var(--text);
}
.rail-body{padding:18px 20px 22px;}
.rail-body .date{font-family:var(--font-num);font-size:12px;color:var(--text-3);letter-spacing:.08em;}
.rail-body h3{font-size:1rem;margin:8px 0 0;}
.rail-body h3 a{color:var(--text);}
.rail-body h3 a:hover{color:var(--primary);}

/* ---------- FAQ ---------- */
.faq-accordion .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
}
.faq-accordion .accordion-button{
  background:transparent;
  color:var(--text);
  font-size:1.05rem;
  font-weight:600;
  padding:22px 44px 22px 0;
  border-radius:0;
  box-shadow:none;
  transition:color var(--t);
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--primary);background:transparent;box-shadow:none;}
.faq-accordion .accordion-button:hover{color:var(--primary);}
.faq-accordion .accordion-button::after{
  background-image:none;
  content:"+";
  font-size:20px;
  width:auto;height:auto;
  margin-left:auto;
  color:var(--text-3);
  transform:none;
  transition:color var(--t);
}
.faq-accordion .accordion-button:not(.collapsed)::after{color:var(--primary);content:"–";}
.faq-accordion .accordion-button:focus{box-shadow:none;}
.faq-accordion .accordion-body{
  padding:0 60px 24px 0;
  color:var(--text-2);
  font-size:.95rem;
}

/* ---------- CTA 收束 ---------- */
.cta-band{
  padding:64px 56px;
  border-radius:var(--radius-panel);
  background:linear-gradient(135deg,rgba(46,230,200,.14),rgba(14,21,36,.85) 55%),var(--surface-2);
  border:1px solid rgba(46,230,200,.22);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(1.4rem,2.4vw,1.9rem);margin-bottom:8px;}
.cta-band p{color:var(--text-2);margin:0;font-size:.95rem;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:var(--surface);
  border-top:1px solid var(--line);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:.88rem;color:var(--text-2);max-width:320px;}
.footer-col h4{
  font-size:13px;letter-spacing:.1em;color:var(--text-3);
  font-weight:600;margin-bottom:18px;text-transform:uppercase;
}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul li a{font-size:.9rem;color:var(--text-2);}
.footer-col ul li a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:56px;padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.8rem;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero-grid{gap:40px;min-height:auto;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:991.98px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding:72px 0;}
  .hero{padding:120px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hl-list{grid-template-columns:1fr;gap:0;}
  .subscribe-card{grid-template-columns:1fr;gap:22px;padding:26px;}
  .news-grid{grid-template-columns:1fr;}
  .news-card.is-feature{grid-column:span 1;grid-template-columns:1fr;}
  .news-card.is-feature .feature-media{min-height:200px;}
  .cta-band{padding:40px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .countdown-inner{gap:18px;padding:20px;}
}
@media (max-width:767.98px){
  .container-x{padding:0 18px;}
  .section{padding:56px 0;}
  .hero{padding:104px 0 56px;}
  .cd-cells{grid-template-columns:repeat(2,1fr);}
  .cd-cell{border-left:0;padding:10px 6px;}
  .cd-cell:nth-child(3),.cd-cell:nth-child(4){border-top:1px solid var(--line);}
  .hl-item{grid-template-columns:44px 1fr;padding:20px 6px;}
  .hl-arrow{display:none;}
  .sub-form{flex-direction:column;}
  .sub-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .rail-item{flex:0 0 260px;}
  .faq-accordion .accordion-body{padding-right:20px;}
  .cta-band .btn{width:100%;}
}
@media (max-width:575.98px){
  .brand-sub{display:none;}
  .hero-actions .btn{width:100%;}
  .news-card{padding:20px;}
}

/* roulang page: article */
:root{
  --bg:#070B14;
  --bg-2:#0B1220;
  --glass:#0E1524;
  --glass-2:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.10);
  --primary:#2EE6C8;
  --primary-h:#56F0D8;
  --primary-d:#17B8A2;
  --amber:#FFB454;
  --text:#E8EFF7;
  --text-2:#9AA9BD;
  --text-3:#667E9A;
  --r-card:16px;
  --r-panel:22px;
  --r-pill:999px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.04), 0 12px 32px -18px rgba(0,0,0,.8);
  --shadow-glow:0 0 0 1px rgba(46,230,200,.35), 0 8px 28px -8px rgba(46,230,200,.55);
  --tr:180ms ease;
  --bs-body-bg:#070B14;
  --bs-body-color:#E8EFF7;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-primary:#2EE6C8;
  --bs-link-color:#9AA9BD;
  --bs-link-hover-color:#2EE6C8;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size:72px 72px;
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{font-family:inherit;color:var(--text);margin:0;letter-spacing:-.02em;}
h1{font-size:clamp(1.75rem,3.4vw,2.65rem);line-height:1.22;font-weight:700;}
h2{font-size:clamp(1.4rem,2.4vw,1.95rem);line-height:1.3;font-weight:700;}
h3{font-size:1.25rem;line-height:1.4;font-weight:600;}
p{margin:0 0 1.2em;}
a{color:var(--text-2);text-decoration:none;transition:color var(--tr),border-color var(--tr),background-color var(--tr);}
a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px;}
img{max-width:100%;display:block;}
ul,ol{padding-left:1.25em;}
button{font-family:inherit;}
:focus-visible{outline:2px dashed var(--primary);outline-offset:2px;}
::selection{background:rgba(46,230,200,.28);color:#fff;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:72px 0;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(7,11,20,.72);backdrop-filter:blur(14px) saturate(140%);border-bottom:1px solid var(--line);transition:background-color var(--tr),border-color var(--tr);}
.site-header.scrolled{background:rgba(7,11,20,.92);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height var(--tr);}
.site-header.scrolled .nav-wrap{height:64px;}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{width:26px;height:26px;border-radius:9px;flex:0 0 26px;background:linear-gradient(135deg,var(--primary),var(--primary-d));box-shadow:0 0 0 1px rgba(46,230,200,.4),0 6px 18px -6px rgba(46,230,200,.7);position:relative;}
.brand-mark::after{content:"";position:absolute;inset:9px;border-radius:3px;background:rgba(4,18,26,.85);}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-size:1.02rem;font-weight:700;color:var(--text);letter-spacing:.01em;}
.brand-sub{font-size:.66rem;color:var(--text-3);letter-spacing:.14em;}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{position:relative;font-size:15px;font-weight:500;color:var(--text-2);text-decoration:none;padding:6px 0;}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--primary);transition:right var(--tr);border-radius:2px;}
.nav-links a:hover{color:var(--text);}
.nav-links a:hover::after{right:0;}
.nav-links a.active{color:var(--text);}
.nav-links a.active::after{right:0;}
.nav-actions{display:flex;align-items:center;gap:14px;}
.nav-icon{width:38px;height:38px;padding:0;border-radius:50%;justify-content:center;}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line-2);border-radius:12px;background:transparent;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--text-2);transition:transform var(--tr),opacity var(--tr);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}
.mobile-menu{display:none;flex-direction:column;padding:8px 24px 24px;border-top:1px solid var(--line);background:rgba(7,11,20,.97);}
.mobile-menu.open{display:flex;}
.mobile-menu a{padding:18px 0;font-size:1.1rem;font-weight:600;color:var(--text);border-bottom:1px solid var(--line);text-decoration:none;}
.mobile-menu a:last-child{border-bottom:0;}
.mobile-menu a:hover{color:var(--primary);}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:.95rem;line-height:1;border-radius:var(--r-pill);padding:13px 26px;border:1px solid transparent;cursor:pointer;transition:transform var(--tr),box-shadow var(--tr),background-color var(--tr),color var(--tr),border-color var(--tr);text-decoration:none;}
.btn:hover{text-decoration:none;}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-d));color:#04121A;box-shadow:var(--shadow-glow);}
.btn-primary:hover{background:linear-gradient(135deg,var(--primary-h),#1FCDB4);color:#04121A;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(46,230,200,.5),0 12px 34px -8px rgba(46,230,200,.72);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:rgba(255,255,255,.02);border-color:rgba(255,255,255,.18);color:var(--text);}
.btn-ghost:hover{border-color:rgba(46,230,200,.6);color:var(--primary);background:rgba(46,230,200,.08);}
.btn-sm{padding:9px 18px;font-size:.85rem;}

/* ============ 面包屑 ============ */
.crumb-bar{padding:26px 0 0;}
.breadcrumb-x{font-size:.8125rem;color:var(--text-3);}
.breadcrumb-x ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0;}
.breadcrumb-x li{display:flex;align-items:center;gap:8px;color:var(--text-3);}
.breadcrumb-x li+li::before{content:"/";color:rgba(255,255,255,.18);}
.breadcrumb-x a{color:var(--text-3);}
.breadcrumb-x a:hover{color:var(--primary);}
.breadcrumb-x [aria-current="page"]{color:var(--text-2);max-width:52ch;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

/* ============ 文章头部 ============ */
.article-head{padding:20px 0 0;}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--primary);font-weight:700;margin-bottom:14px;}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,transparent,var(--primary));}
.article-head h1{margin-bottom:16px;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:.8125rem;color:var(--text-3);padding-bottom:26px;border-bottom:1px solid var(--line);}
.meta-row .sep{width:1px;height:12px;background:rgba(255,255,255,.14);}
.meta-row i{color:var(--text-3);margin-right:5px;}
.tag-pill{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);font-size:.75rem;font-weight:600;color:var(--primary);background:rgba(46,230,200,.10);border:1px solid rgba(46,230,200,.4);}
.article-cover{margin:30px 0 0;border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--line-2);position:relative;}
.article-cover img{width:100%;aspect-ratio:16/7;object-fit:cover;}
.article-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,20,0) 40%,rgba(7,11,20,.85) 100%);}
.article-cover .cover-caption{position:absolute;left:24px;bottom:18px;right:24px;font-size:.8125rem;color:var(--text-2);z-index:2;}

/* ============ 布局 ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;padding:44px 0 0;}
.article-main{min-width:0;}

/* ============ 正文排版 ============ */
.article-body{max-width:800px;font-size:1rem;line-height:1.9;color:var(--text);}
.article-body>*{margin-bottom:1.2em;}
.article-body h2{font-size:1.5rem;margin:2em 0 .8em;padding-left:14px;border-left:3px solid var(--primary);}
.article-body h3{font-size:1.2rem;margin:1.7em 0 .6em;color:var(--text);}
.article-body p{color:#CBD8E6;}
.article-body ul,.article-body ol{padding-left:1.3em;color:#CBD8E6;}
.article-body li{margin-bottom:.5em;}
.article-body li::marker{color:var(--primary);}
.article-body a{color:var(--text-2);text-decoration:underline;text-decoration-color:rgba(46,230,200,.55);text-underline-offset:4px;}
.article-body a:hover{color:var(--primary);}
.article-body blockquote{margin:1.6em 0;padding:6px 0 6px 20px;border-left:3px solid var(--primary);color:var(--text-2);font-style:normal;}
.article-body img{border-radius:14px;margin:1.6em auto;box-shadow:var(--shadow-card);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{text-align:center;font-size:.8125rem;color:var(--text-3);margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:.9rem;}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;}
.article-body th{background:rgba(255,255,255,.03);color:var(--text);font-weight:600;}
.article-body td{color:#C3D2E1;}
.article-body code{background:#0A1020;border:1px solid var(--line);border-radius:8px;padding:2px 7px;font-size:.875rem;color:var(--primary-h);}
.article-body pre{background:#080D1A;border:1px solid var(--line);border-radius:12px;padding:16px 18px;overflow-x:auto;font-size:.85rem;line-height:1.7;}
.article-body pre code{background:none;border:0;padding:0;color:#B9C9DA;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}

.empty-state{text-align:center;padding:64px 24px;border:1px dashed var(--line-2);border-radius:var(--r-panel);background:rgba(255,255,255,.02);}
.empty-state i{font-size:2rem;color:var(--text-3);margin-bottom:16px;display:block;}
.empty-state h2{font-size:1.3rem;margin-bottom:10px;border:0;padding:0;}
.empty-state p{color:var(--text-2);max-width:44ch;margin:0 auto 22px;}

/* ============ 文末区域 ============ */
.article-foot{max-width:800px;margin-top:46px;}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding-bottom:28px;border-bottom:1px solid var(--line);}
.tag-row .label{font-size:.8125rem;color:var(--text-3);margin-right:4px;}
.split-links{display:grid;grid-template-columns:1fr 1fr;gap:0;border-bottom:1px solid var(--line);}
.split-links a{display:flex;flex-direction:column;gap:6px;padding:26px 22px;text-decoration:none;}
.split-links a:first-child{border-right:1px solid var(--line);}
.split-links a:hover{background:rgba(46,230,200,.06);text-decoration:none;}
.split-links .dir{font-size:.75rem;letter-spacing:.12em;color:var(--text-3);text-transform:uppercase;}
.split-links .ttl{font-size:1rem;font-weight:600;color:var(--text);}
.split-links a:hover .ttl{color:var(--primary);}

.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin:56px 0 24px;}
.block-head h2{font-size:1.35rem;}
.block-head .hint{font-size:.8125rem;color:var(--text-3);}
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.rec-card{display:flex;flex-direction:column;background:var(--glass);background-image:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,0));border:1px solid var(--line-2);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);transition:transform var(--tr),border-color var(--tr),background-color var(--tr);text-decoration:none;}
.rec-card:hover{transform:translateY(-2px);border-color:rgba(46,230,200,.3);text-decoration:none;}
.rec-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.rec-card .rc-body{padding:18px 18px 20px;}
.rec-card h3{font-size:1rem;margin-bottom:8px;color:var(--text);}
.rec-card:hover h3{color:var(--primary);}
.rec-card p{font-size:.85rem;color:var(--text-2);line-height:1.75;margin:0;}
.back-row{margin-top:36px;}

/* ============ 侧栏 ============ */
.sidebar{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:var(--glass);background-image:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,0));border:1px solid var(--line-2);border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-card);}
.side-card h3{font-size:.95rem;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line);letter-spacing:.02em;}
.side-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;}
.side-list a{display:flex;align-items:flex-start;gap:10px;padding:9px 10px;border-radius:10px;font-size:.88rem;color:var(--text-2);text-decoration:none;line-height:1.6;}
.side-list a:hover{background:rgba(46,230,200,.08);color:var(--primary);text-decoration:none;}
.side-list a i{font-size:.75rem;margin-top:6px;color:var(--primary);}
.side-meta{display:flex;flex-direction:column;gap:12px;font-size:.85rem;color:var(--text-2);}
.side-meta div{display:flex;justify-content:space-between;gap:12px;padding-bottom:12px;border-bottom:1px dashed var(--line);}
.side-meta div:last-child{border-bottom:0;padding-bottom:0;}
.side-meta span:last-child{color:var(--text);font-weight:600;}
.side-cta{background:linear-gradient(150deg,rgba(46,230,200,.14),rgba(11,18,32,.2));border:1px solid rgba(46,230,200,.3);border-radius:var(--r-card);padding:22px;text-align:left;}
.side-cta h3{font-size:1rem;margin-bottom:8px;}
.side-cta p{font-size:.85rem;color:var(--text-2);line-height:1.75;margin-bottom:16px;}
.side-cta .btn{width:100%;}

/* ============ CTA 条 ============ */
.cta-band{margin:80px 0 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:34px 38px;border-radius:var(--r-panel);background:var(--glass);background-image:linear-gradient(120deg,rgba(46,230,200,.12),rgba(255,255,255,.02) 60%);border:1px solid var(--line-2);box-shadow:var(--shadow-card);}
.cta-inner h2{font-size:clamp(1.2rem,2vw,1.6rem);margin-bottom:6px;}
.cta-inner p{margin:0;font-size:.9rem;color:var(--text-2);}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line);margin-top:96px;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:.875rem;color:var(--text-2);line-height:1.85;max-width:40ch;margin:0;}
.footer-col h4{font-size:.9rem;font-weight:700;margin-bottom:18px;color:var(--text);letter-spacing:.02em;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px;}
.footer-col ul a{font-size:.875rem;color:var(--text-2);text-decoration:none;}
.footer-col ul a:hover{color:var(--primary);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:20px 0;border-top:1px solid var(--line);font-size:.8125rem;color:var(--text-3);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:36px;}
}
@media (max-width:991.98px){
  .nav-links,.nav-actions .btn{display:none;}
  .nav-toggle{display:flex;}
  .article-layout{grid-template-columns:1fr;gap:0;}
  .sidebar{position:static;margin-top:48px;}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .container-x{padding:0 18px;}
  .section{padding:56px 0;}
  .article-cover img{aspect-ratio:16/9;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:28px 22px;}
  .cta-inner .btn{width:100%;}
  .split-links{grid-template-columns:1fr;}
  .split-links a:first-child{border-right:0;border-bottom:1px solid var(--line);}
}
@media (max-width:575.98px){
  .rec-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .article-head h1{font-size:1.6rem;}
  .block-head{flex-direction:column;align-items:flex-start;gap:8px;}
}

/* roulang page: category1 */
:root{
  --bg:#070B14;
  --bg-2:#0B1220;
  --surface:#0E1524;
  --glass:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.10);
  --primary:#2EE6C8;
  --primary-hover:#56F0D8;
  --primary-deep:#17B8A2;
  --accent:#FFB454;
  --text-1:#E8EFF7;
  --text-2:#9AA9BD;
  --text-3:#667E9A;
  --r-card:16px;
  --r-panel:22px;
  --r-pill:999px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.04), 0 12px 32px -18px rgba(0,0,0,.8);
  --glow:0 0 0 1px rgba(46,230,200,.35), 0 8px 28px -8px rgba(46,230,200,.55);
  --ease:180ms ease;
  --sec:96px;

  --bs-body-bg:#070B14;
  --bs-body-color:#E8EFF7;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-primary:#2EE6C8;
  --bs-primary-rgb:46,230,200;
  --bs-link-color:#9AA9BD;
  --bs-link-hover-color:#2EE6C8;
  --bs-font-sans-serif:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",Inter,Helvetica,Arial,sans-serif;
  --bs-body-font-size:1rem;
  --bs-body-line-height:1.9;
}

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

html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--bg);
  color:var(--text-1);
  font-family:var(--bs-font-sans-serif);
  font-size:1rem;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{max-width:100%;display:block;}
a{color:var(--text-2);text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease);}
a:hover{color:var(--primary);}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text-1);letter-spacing:-.02em;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol,dl{margin:0;padding:0;list-style:none;}
button,input{font:inherit;color:inherit;}
:focus-visible{outline:2px dashed var(--primary);outline-offset:3px;border-radius:6px;}

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

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),height var(--ease);
}
.site-header.scrolled{
  background:rgba(7,11,20,.92);
  border-bottom-color:var(--line);
}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:32px;
  transition:height var(--ease);
}
.site-header.scrolled .header-inner{height:64px;}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text-1);
  flex-shrink:0;
}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:26px;height:26px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-deep) 100%);
  box-shadow:0 0 0 1px rgba(46,230,200,.35),0 6px 18px -8px rgba(46,230,200,.7);
  position:relative;
  flex-shrink:0;
}
.brand-mark::after{
  content:"";
  position:absolute;inset:8px;
  border-radius:3px;
  background:rgba(4,18,26,.85);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-size:1.0625rem;font-weight:700;letter-spacing:-.01em;}
.brand-sub{
  font-size:.6875rem;
  color:var(--text-3);
  letter-spacing:.14em;
  text-transform:uppercase;
  margin-top:3px;
}

.nav-links{
  display:flex;
  align-items:center;
  gap:32px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  font-size:.9375rem;
  font-weight:500;
  color:var(--text-2);
  padding:6px 0;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--ease);
  border-radius:2px;
}
.nav-links a:hover{color:var(--text-1);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--text-1);}
.nav-links a.active::after{transform:scaleX(1);}

.header-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border:1px solid var(--line-strong);
  border-radius:12px;
  background:rgba(255,255,255,.03);
  cursor:pointer;
  align-items:center;
  justify-content:center;
}
.nav-toggle span{
  display:block;
  width:16px;height:1.5px;
  background:var(--text-1);
  position:relative;
  transition:background var(--ease);
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:16px;height:1.5px;
  background:var(--text-1);
  transition:transform var(--ease);
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--r-pill);
  font-weight:700;
  font-size:.9375rem;
  padding:12px 26px;
  border:1px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
  cursor:pointer;
  text-align:center;
}
.btn-primary{
  background:linear-gradient(135deg,#2EE6C8 0%,#17B8A2 100%);
  color:#04121A;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  color:#04121A;
  transform:translateY(-1px);
  background:linear-gradient(135deg,#56F0D8 0%,#2EE6C8 100%);
  box-shadow:0 0 0 1px rgba(46,230,200,.5),0 12px 34px -8px rgba(46,230,200,.75);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.18);
  color:var(--text-1);
}
.btn-ghost:hover{
  border-color:var(--primary);
  color:var(--primary);
  background:rgba(46,230,200,.08);
}
.btn-sm{padding:9px 20px;font-size:.875rem;}
.btn-lg{padding:14px 32px;font-size:1rem;}

/* ============ 徽章 / 标签 ============ */
.badge-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  font-size:.75rem;
  letter-spacing:.04em;
  color:var(--primary);
  background:rgba(46,230,200,.10);
  border:1px solid rgba(46,230,200,.40);
}
.badge-warn{
  color:var(--accent);
  background:rgba(255,180,84,.10);
  border-color:rgba(255,180,84,.40);
}
.dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 0 0 rgba(46,230,200,.7);
  animation:pulse 2.2s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(46,230,200,.55);}
  70%{box-shadow:0 0 0 9px rgba(46,230,200,0);}
  100%{box-shadow:0 0 0 0 rgba(46,230,200,0);}
}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:.8125rem;
  color:var(--text-3);
  margin-bottom:22px;
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:rgba(255,255,255,.18);}
.crumb .cur{color:var(--text-2);}

/* ============ 首屏 ============ */
.hero{
  position:relative;
  padding:72px 0 64px;
  background-image:linear-gradient(180deg,rgba(7,11,20,.86) 0%,rgba(7,11,20,.94) 60%,rgba(7,11,20,1) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:clamp(2rem,4.6vw,3.5rem);
  line-height:1.15;
  margin:20px 0 0;
}
.hero h1 em{
  font-style:normal;
  color:var(--primary);
}
.hero-lead{
  font-size:1.0625rem;
  color:var(--text-2);
  margin-top:18px;
  max-width:560px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:32px;
}
.hero-note{
  display:flex;
  flex-wrap:wrap;
  gap:10px 26px;
  margin-top:28px;
  font-size:.8125rem;
  color:var(--text-3);
}
.hero-note span{display:inline-flex;align-items:center;gap:7px;}
.hero-note i{color:var(--primary);font-size:.75rem;}

.entry-card{
  position:relative;
  border-radius:var(--r-panel);
  overflow:hidden;
  border:1px solid var(--line-strong);
  background:var(--surface);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px) saturate(140%);
}
.entry-card img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}
.entry-card-tag{
  position:absolute;
  top:14px;right:14px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  font-size:.6875rem;
  letter-spacing:.1em;
  color:var(--text-1);
  background:rgba(7,11,20,.6);
  border:1px solid rgba(255,255,255,.18);
  backdrop-filter:blur(10px);
  text-transform:uppercase;
}
.entry-card-body{
  padding:20px 22px 22px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(14,21,36,.2),rgba(14,21,36,.9));
}
.entry-card-body h3{font-size:1.0625rem;margin-bottom:8px;}
.entry-card-body p{font-size:.875rem;color:var(--text-2);line-height:1.8;}
.entry-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:.8125rem;
  color:var(--text-3);
}
.entry-meta strong{color:var(--primary);font-weight:600;}

/* ============ 信息速览条 ============ */
.facts{
  margin-top:-32px;
  position:relative;
  z-index:5;
}
.facts-inner{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-radius:var(--r-panel);
  border:1px solid var(--line-strong);
  background:rgba(14,21,36,.86);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.fact{
  padding:22px 24px;
  border-right:1px solid var(--line);
}
.fact:last-child{border-right:0;}
.fact dt{
  font-size:.75rem;
  letter-spacing:.12em;
  color:var(--text-3);
  text-transform:uppercase;
  margin-bottom:8px;
}
.fact dd{
  margin:0;
  font-size:1.0625rem;
  font-weight:600;
  color:var(--text-1);
}
.fact dd small{
  display:block;
  font-size:.8125rem;
  font-weight:400;
  color:var(--text-3);
  margin-top:4px;
}

/* ============ 区块通用 ============ */
.section{padding:var(--sec) 0;}
.section-sm{padding:64px 0;}
.section-head{
  max-width:720px;
  margin-bottom:44px;
}
.section-head h2{
  font-size:clamp(1.5rem,2.6vw,2.125rem);
  line-height:1.25;
}
.section-head p{
  margin-top:14px;
  color:var(--text-2);
  font-size:1rem;
}
.eyebrow{
  display:inline-block;
  font-size:.75rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--primary);
  margin-bottom:14px;
}

/* ============ 横幅 ============ */
.banner{
  position:relative;
  border-radius:var(--r-panel);
  overflow:hidden;
  min-height:250px;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card);
}
.banner img{
  position:absolute;inset:0;
  width:100%;height:100%;
  object-fit:cover;
}
.banner::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,11,20,.92) 0%,rgba(7,11,20,.72) 48%,rgba(7,11,20,.35) 100%);
}
.banner-inner{
  position:relative;
  z-index:2;
  padding:38px 40px;
  max-width:640px;
}
.banner-inner h2{
  font-size:clamp(1.375rem,2.2vw,1.75rem);
  margin-bottom:12px;
}
.banner-inner p{color:var(--text-2);font-size:.9375rem;}

/* ============ 术语定义列表 ============ */
.dl-wrap{
  border-top:1px solid var(--line);
}
.dl-row{
  display:grid;
  grid-template-columns:220px 1fr;
  gap:32px;
  padding:24px 4px;
  border-bottom:1px solid var(--line);
  transition:background var(--ease);
}
.dl-row:hover{background:rgba(255,255,255,.022);}
.dl-row dt{
  font-size:.9375rem;
  font-weight:600;
  color:var(--text-1);
  display:flex;
  align-items:baseline;
  gap:10px;
}
.dl-row dt i{color:var(--primary);font-size:.8125rem;}
.dl-row dd{
  margin:0;
  color:var(--text-2);
  font-size:.9375rem;
  line-height:1.9;
}

/* ============ 步骤流 ============ */
.steps{
  counter-reset:step;
  border-left:1px solid var(--line);
  padding-left:0;
  margin-left:14px;
}
.step{
  position:relative;
  padding:0 0 34px 34px;
}
.step:last-child{padding-bottom:0;}
.step::before{
  counter-increment:step;
  content:counter(step,decimal-leading-zero);
  position:absolute;
  left:-15px;top:2px;
  width:30px;height:30px;
  border-radius:50%;
  background:var(--bg-2);
  border:1px solid rgba(46,230,200,.45);
  color:var(--primary);
  font-size:.75rem;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:1.125rem;margin-bottom:8px;}
.step p{color:var(--text-2);font-size:.9375rem;}

/* ============ 清单列表 ============ */
.check-list{
  border:1px solid var(--line-strong);
  border-radius:var(--r-card);
  background:var(--glass);
  overflow:hidden;
}
.check-item{
  display:flex;
  gap:16px;
  padding:20px 24px;
  border-bottom:1px solid var(--line);
  transition:background var(--ease);
}
.check-item:last-child{border-bottom:0;}
.check-item:hover{background:rgba(46,230,200,.04);}
.check-item i{
  color:var(--primary);
  font-size:1rem;
  margin-top:5px;
  flex-shrink:0;
}
.check-item h3{font-size:1rem;margin-bottom:6px;}
.check-item p{font-size:.9rem;color:var(--text-2);}

/* ============ 双栏对比 ============ */
.compare{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
.compare-col{
  border:1px solid var(--line-strong);
  border-radius:var(--r-card);
  background:var(--surface);
  padding:26px 26px 22px;
  box-shadow:var(--shadow-card);
  transition:border-color var(--ease),transform var(--ease);
}
.compare-col:hover{border-color:rgba(46,230,200,.3);transform:translateY(-2px);}
.compare-col h3{font-size:1.0625rem;margin-bottom:16px;}
.compare-col ul li{
  display:flex;
  gap:12px;
  padding:11px 0;
  border-bottom:1px solid var(--line);
  font-size:.9rem;
  color:var(--text-2);
}
.compare-col ul li:last-child{border-bottom:0;}
.compare-col ul li i{color:var(--primary);font-size:.75rem;margin-top:7px;}

/* ============ FAQ ============ */
.accordion{--bs-accordion-border-width:0;--bs-accordion-bg:transparent;}
.accordion-item{
  background:var(--surface);
  border:1px solid var(--line-strong);
  border-radius:var(--r-card)!important;
  margin-bottom:14px;
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.accordion-button{
  background:transparent;
  color:var(--text-1);
  font-weight:600;
  font-size:1rem;
  padding:20px 24px;
  box-shadow:none!important;
  line-height:1.7;
}
.accordion-button:not(.collapsed){
  background:rgba(46,230,200,.05);
  color:var(--primary);
}
.accordion-button::after{
  filter:invert(85%) sepia(30%) saturate(800%) hue-rotate(120deg);
  width:14px;height:14px;background-size:14px;
}
.accordion-body{
  padding:0 24px 22px;
  color:var(--text-2);
  font-size:.9375rem;
  line-height:1.9;
}

/* ============ 分类胶囊行 ============ */
.pill-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.pill{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:10px 20px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.03);
  font-size:.875rem;
  color:var(--text-2);
}
.pill:hover{
  border-color:var(--primary);
  color:var(--primary);
  background:rgba(46,230,200,.08);
}
.pill i{font-size:.75rem;}

/* ============ CTA 条 ============ */
.cta-bar{
  border:1px solid var(--line-strong);
  border-radius:var(--r-panel);
  background:linear-gradient(120deg,rgba(46,230,200,.10) 0%,rgba(14,21,36,.9) 52%,rgba(14,21,36,.9) 100%);
  padding:38px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-bar h2{font-size:clamp(1.25rem,2.1vw,1.625rem);}
.cta-bar p{margin-top:8px;color:var(--text-2);font-size:.9375rem;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-2);
  border-top:1px solid var(--line);
  padding:64px 0 0;
  margin-top:var(--sec);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand p{
  margin-top:18px;
  font-size:.875rem;
  color:var(--text-2);
  line-height:1.9;
  max-width:340px;
}
.footer-col h4{
  font-size:.8125rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--text-3);
  font-weight:600;
  margin-bottom:18px;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{font-size:.9rem;color:var(--text-2);}
.footer-col ul li a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-size:.8125rem;
  color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  :root{--sec:76px;}
  .hero-grid{gap:40px;}
  .dl-row{grid-template-columns:190px 1fr;gap:24px;}
}

@media (max-width:991.98px){
  :root{--sec:64px;}
  .nav-toggle{display:flex;}
  .nav-links{
    position:fixed;
    inset:64px 0 0 0;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:20px 24px 40px;
    background:rgba(7,11,20,.97);
    backdrop-filter:blur(18px);
    border-top:1px solid var(--line);
    transform:translateY(-12px);
    opacity:0;
    pointer-events:none;
    transition:opacity var(--ease),transform var(--ease);
    margin-left:0;
    overflow-y:auto;
  }
  .nav-links.open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .nav-links a{
    width:100%;
    font-size:1.25rem;
    font-weight:600;
    padding:20px 0;
    border-bottom:1px solid var(--line);
    color:var(--text-1);
  }
  .nav-links a::after{display:none;}
  .nav-links a.active{color:var(--primary);}
  .header-actions .btn{display:none;}

  .hero{padding:48px 0 56px;}
  .hero-grid{grid-template-columns:1fr;}
  .entry-card{order:2;}
  .facts{margin-top:24px;}
  .facts-inner{grid-template-columns:1fr 1fr;}
  .fact:nth-child(2){border-right:0;}
  .fact:nth-child(1),.fact:nth-child(2){border-bottom:1px solid var(--line);}
  .compare{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}

@media (max-width:767.98px){
  .container-x{padding:0 18px;}
  .hero h1{font-size:clamp(1.75rem,7vw,2.25rem);}
  .hero-actions .btn{width:100%;}
  .dl-row{grid-template-columns:1fr;gap:8px;padding:20px 2px;}
  .dl-row dt{font-size:.9rem;}
  .banner-inner{padding:28px 24px;}
  .banner{min-height:220px;}
  .cta-bar{padding:28px 24px;flex-direction:column;align-items:flex-start;}
  .cta-bar .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .section-head{margin-bottom:32px;}
}

@media (max-width:575.98px){
  :root{--sec:56px;}
  .facts-inner{grid-template-columns:1fr;}
  .fact{border-right:0;border-bottom:1px solid var(--line);}
  .fact:last-child{border-bottom:0;}
  .brand-sub{font-size:.625rem;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category2 */
:root{
  --base:#070B14;
  --surface:#0B1220;
  --glass:#0E1524;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --primary:#2EE6C8;
  --primary-hover:#56F0D8;
  --primary-deep:#17B8A2;
  --amber:#FFB454;
  --text-1:#E8EFF7;
  --text-2:#9AA9BD;
  --text-3:#667E9A;
  --radius-card:16px;
  --radius-panel:22px;
  --radius-pill:999px;
  --glow:0 0 0 1px rgba(46,230,200,.35), 0 8px 28px -8px rgba(46,230,200,.55);
  --shadow:inset 0 1px 0 rgba(255,255,255,.04), 0 12px 32px -18px rgba(0,0,0,.8);
  --dur:180ms;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Inter",sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --bs-body-bg:var(--base);
  --bs-body-color:var(--text-1);
  --bs-border-color:var(--line);
  --bs-primary:var(--primary);
  --bs-link-color:var(--text-2);
  --bs-link-hover-color:var(--primary);
  --bs-font-sans-serif:var(--font-sans);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--base);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:64px 64px;
  z-index:0;
}
img{max-width:100%;display:block;}
a{color:var(--text-2);text-decoration:none;transition:color var(--dur) ease;}
a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px;}
h1,h2,h3,h4{margin:0;color:var(--text-1);letter-spacing:-.01em;}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px dashed var(--primary);outline-offset:2px;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--radius-pill);
  font-size:.94rem;font-weight:700;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--dur) ease,box-shadow var(--dur) ease,background var(--dur) ease,color var(--dur) ease,border-color var(--dur) ease;
  text-decoration:none;white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn-glow{
  background:linear-gradient(135deg,#2EE6C8,#17B8A2);
  color:#04121A;
  box-shadow:var(--glow);
}
.btn-glow:hover{background:linear-gradient(135deg,#56F0D8,#1FC9B0);color:#04121A;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(46,230,200,.5),0 12px 34px -8px rgba(46,230,200,.7);}
.btn-glow:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;color:var(--text-1);border-color:rgba(255,255,255,.18);
}
.btn-ghost:hover{color:var(--primary);border-color:rgba(46,230,200,.55);background:rgba(46,230,200,.08);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:8px 18px;font-size:.86rem;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--text-1);}
.brand:hover{text-decoration:none;color:var(--text-1);}
.brand-mark{
  width:26px;height:26px;border-radius:9px;position:relative;flex:0 0 auto;
  background:linear-gradient(135deg,#2EE6C8,#17B8A2);
  box-shadow:0 0 0 1px rgba(46,230,200,.4),0 6px 18px -8px rgba(46,230,200,.8);
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;border-radius:3px;background:rgba(7,11,20,.85);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-size:1.03rem;font-weight:700;letter-spacing:-.01em;}
.brand-sub{font-size:.6rem;letter-spacing:.2em;color:var(--text-3);margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;text-decoration:none;
}
.nav-links a:hover{color:var(--text-1);text-decoration:none;}
.nav-links a.active{color:var(--text-1);}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--primary);
}
.nav-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line-strong);background:transparent;color:var(--text-1);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:16px;height:1.5px;background:currentColor;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.5px;background:currentColor;
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:26px 0 0;}
.breadcrumb-x{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.breadcrumb-x a{color:var(--text-3);text-decoration:none;}
.breadcrumb-x a:hover{color:var(--primary);text-decoration:none;}
.breadcrumb-x .sep{color:var(--text-3);opacity:.55;}
.breadcrumb-x .current{color:var(--text-2);}

/* ---------- 主布局 ---------- */
.page-main{padding:28px 0 0;}
.layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:48px;align-items:start;}
.toc{position:sticky;top:104px;display:flex;flex-direction:column;gap:18px;}
.toc-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 18px;box-shadow:var(--shadow);
}
.toc-title{
  font-size:.7rem;letter-spacing:.16em;color:var(--text-3);
  margin-bottom:14px;font-weight:600;
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;padding:9px 12px;border-radius:10px;font-size:.9rem;color:var(--text-2);
  border-left:2px solid transparent;text-decoration:none;
  transition:background var(--dur) ease,color var(--dur) ease,border-color var(--dur) ease;
}
.toc-list a:hover{color:var(--text-1);background:rgba(255,255,255,.045);text-decoration:none;}
.toc-list a.is-current{
  color:var(--primary);background:rgba(46,230,200,.07);border-left-color:var(--primary);
}

/* ---------- 主区通用 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.72rem;letter-spacing:.14em;color:var(--primary);
  border:1px solid rgba(46,230,200,.4);background:rgba(46,230,200,.08);
  border-radius:var(--radius-pill);padding:5px 14px;margin-bottom:18px;
}
.eyebrow::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);
  box-shadow:0 0 0 3px rgba(46,230,200,.16);
}
.page-title{
  font-size:clamp(1.85rem,3.6vw,2.6rem);line-height:1.2;font-weight:700;letter-spacing:-.02em;
  margin-bottom:16px;
}
.page-lede{color:var(--text-2);font-size:1.02rem;max-width:62ch;margin-bottom:0;}
.block{padding:56px 0 0;}
.block:last-child{padding-bottom:0;}
.block-head{margin-bottom:26px;}
.block-head h2{font-size:clamp(1.3rem,2.3vw,1.7rem);line-height:1.3;font-weight:700;}
.block-head p{color:var(--text-2);font-size:.95rem;margin:10px 0 0;max-width:64ch;}
.rule{height:1px;background:var(--line);margin:44px 0 0;}

/* ---------- 时间轴 ---------- */
.timeline{margin-top:6px;}
.tl-item{position:relative;padding:0 0 34px 62px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:21px;top:44px;bottom:4px;width:1px;
  background:linear-gradient(180deg,rgba(46,230,200,.35),rgba(255,255,255,.06));
}
.tl-item:last-child::before{display:none;}
.tl-num{
  position:absolute;left:0;top:0;width:44px;height:44px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:.92rem;font-weight:700;color:var(--primary);
  background:rgba(46,230,200,.07);border:1px solid rgba(46,230,200,.32);
}
.tl-item h3{font-size:1.1rem;font-weight:600;margin-bottom:8px;}
.tl-item p{color:var(--text-2);font-size:.95rem;margin:0;max-width:64ch;}

/* ---------- 对比两列 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.compare-col{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow);
  transition:transform var(--dur) ease,border-color var(--dur) ease,background var(--dur) ease;
}
.compare-col:hover{transform:translateY(-2px);border-color:rgba(46,230,200,.3);background:#111a2b;}
.compare-col h3{font-size:1.12rem;font-weight:600;margin-bottom:4px;}
.compare-col .tagline{font-size:.82rem;color:var(--text-3);margin-bottom:18px;}
.cmp-row{display:grid;grid-template-columns:84px minmax(0,1fr);gap:14px;padding:12px 0;border-top:1px solid var(--line);}
.cmp-row:first-of-type{border-top:0;}
.cmp-row dt{font-size:.82rem;color:var(--text-3);margin:0;}
.cmp-row dd{margin:0;font-size:.93rem;color:var(--text-1);line-height:1.75;}
.compare-col.is-accent{border-color:rgba(46,230,200,.28);}
.compare-col.is-accent h3{color:var(--primary);}

/* ---------- 条目清单 ---------- */
.spec-list{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:8px 26px;box-shadow:var(--shadow);
}
.spec-row{
  display:grid;grid-template-columns:190px minmax(0,1fr);gap:18px;
  padding:18px 0;border-bottom:1px solid var(--line);align-items:baseline;
}
.spec-row:last-child{border-bottom:0;}
.spec-row .k{font-size:.9rem;font-weight:600;color:var(--text-1);}
.spec-row .v{font-size:.93rem;color:var(--text-2);}
.spec-row .v strong{color:var(--primary);font-weight:600;}

/* ---------- 图文块 ---------- */
.feature{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:28px;align-items:center;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-panel);
  padding:26px;box-shadow:var(--shadow);
}
.feature-media{position:relative;border-radius:14px;overflow:hidden;aspect-ratio:16/9;}
.feature-media img{width:100%;height:100%;object-fit:cover;}
.feature-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,0) 40%,rgba(7,11,20,.85) 100%);
}
.feature-media .media-tag{
  position:absolute;left:14px;bottom:14px;z-index:2;
  font-size:.74rem;color:var(--text-1);letter-spacing:.08em;
  background:rgba(7,11,20,.6);border:1px solid var(--line-strong);
  border-radius:var(--radius-pill);padding:5px 12px;backdrop-filter:blur(8px);
}
.feature-text h3{font-size:1.16rem;font-weight:600;margin-bottom:14px;}
.dot-list li{
  position:relative;padding-left:20px;margin-bottom:12px;font-size:.94rem;color:var(--text-2);
}
.dot-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:50%;
  background:rgba(46,230,200,.25);border:1px solid rgba(46,230,200,.6);transform:translateY(-50%);
}
.dot-list li strong{color:var(--text-1);font-weight:600;}

/* ---------- FAQ ---------- */
.accordion-x .accordion-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow);
}
.accordion-x .accordion-button{
  background:transparent;color:var(--text-1);font-size:1rem;font-weight:600;
  padding:18px 22px;box-shadow:none;line-height:1.6;
}
.accordion-x .accordion-button:not(.collapsed){
  color:var(--primary);background:rgba(46,230,200,.05);box-shadow:none;
}
.accordion-x .accordion-button:focus{box-shadow:none;outline:2px dashed var(--primary);outline-offset:-4px;}
.accordion-x .accordion-button::after{
  width:16px;height:16px;background-size:16px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232EE6C8'%3E%3Cpath d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
}
.accordion-x .accordion-body{
  padding:0 22px 20px;color:var(--text-2);font-size:.94rem;line-height:1.9;
}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:36px 40px;border-radius:var(--radius-panel);
  background:linear-gradient(135deg,rgba(46,230,200,.13),rgba(14,21,36,.92));
  border:1px solid rgba(46,230,200,.26);
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:1.32rem;font-weight:700;margin-bottom:8px;}
.cta-band p{color:var(--text-2);font-size:.94rem;margin:0;max-width:52ch;}

/* ---------- 内链胶囊 ---------- */
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px;}
.pill-link{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--radius-pill);font-size:.86rem;color:var(--text-2);
  border:1px solid var(--line-strong);background:rgba(255,255,255,.02);
  transition:all var(--dur) ease;text-decoration:none;
}
.pill-link:hover{color:var(--primary);border-color:rgba(46,230,200,.5);background:rgba(46,230,200,.08);text-decoration:none;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;background:var(--surface);border-top:1px solid var(--line);
  padding:64px 0 28px;position:relative;z-index:1;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{color:var(--text-2);font-size:.9rem;line-height:1.9;margin:0;max-width:44ch;}
.footer-col h4{font-size:.94rem;font-weight:600;margin-bottom:16px;color:var(--text-1);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:.9rem;color:var(--text-2);text-decoration:none;}
.footer-col ul a:hover{color:var(--primary);text-decoration:none;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  font-size:.82rem;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container-x{max-width:1100px;}
}
@media (max-width:991px){
  .nav-links{
    display:none;
    position:absolute;top:72px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(7,11,20,.98);backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line);padding:12px 24px 22px;
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:15px 0;border-bottom:1px solid var(--line);font-size:1rem;}
  .nav-links a.active::after{display:none;}
  .nav-links a.active{color:var(--primary);}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .toc{position:static;top:auto;gap:14px;}
  .toc-card{padding:16px;}
  .toc-list{flex-direction:row;flex-wrap:nowrap;overflow-x:auto;gap:8px;padding-bottom:4px;}
  .toc-list a{
    white-space:nowrap;border:1px solid var(--line-strong);border-left:1px solid var(--line-strong);
    border-radius:var(--radius-pill);padding:7px 15px;font-size:.85rem;
  }
  .toc-list a.is-current{border-color:rgba(46,230,200,.55);}
  .feature{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container-x{padding:0 18px;}
  .block{padding:44px 0 0;}
  .compare{grid-template-columns:minmax(0,1fr);}
  .spec-row{grid-template-columns:minmax(0,1fr);gap:4px;padding:15px 0;}
  .spec-list{padding:6px 20px;}
  .tl-item{padding-left:54px;}
  .tl-item::before{left:19px;}
  .tl-num{width:40px;height:40px;border-radius:12px;font-size:.85rem;}
  .cta-band{padding:28px 24px;}
  .cta-band .btn{width:100%;}
  .crumb-bar{padding:20px 0 0;}
  .site-footer{margin-top:64px;padding:48px 0 24px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:520px){
  .page-title{font-size:1.7rem;}
  .brand-sub{display:none;}
  .block-head h2{font-size:1.24rem;}
}