/* roulang page: index */
:root{
  --bg:#060B14;--bg-soft:#0A121F;--surface:#0E1726;--surface-2:#132135;
  --primary:#22D3EE;--primary-deep:#0E9FB4;--primary-soft:rgba(34,211,238,.12);
  --accent:#F0B24A;
  --text:#E8F0F8;--text-2:#9DB0C6;--line:rgba(140,178,214,.14);
  --success:#4ADE80;--danger:#F87171;
  --sh-1:0 2px 10px rgba(0,0,0,.35);
  --sh-2:0 14px 40px -18px rgba(0,0,0,.7);
  --glow:0 10px 30px -10px rgba(34,211,238,.55);
  --r-card:16px;--r-panel:20px;--r-btn:10px;--r-badge:999px;
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --glass:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  --glass-line:1px solid rgba(120,190,220,.16);
}
*,*::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:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
  padding-top:72px;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border-radius:12px;}
a{color:inherit;text-decoration:none;transition:color var(--t),opacity var(--t);}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
::selection{background:rgba(34,211,238,.28);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-soft);}
::-webkit-scrollbar-thumb{background:#22344d;border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:var(--primary-deep);}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;box-shadow:0 0 0 4px rgba(34,211,238,.18);}

.container{max-width:1200px;margin:0 auto;padding:0 32px;}
.sec{padding:96px 0;position:relative;}
.sec-soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{margin-bottom:40px;max-width:820px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--primary);background:var(--primary-soft);
  border:1px solid rgba(34,211,238,.22);
  padding:5px 12px;border-radius:var(--r-badge);margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);}
h2.sec-title{font-size:32px;line-height:1.3;font-weight:700;letter-spacing:-.005em;}
.sec-sub{margin-top:14px;color:var(--text-2);font-size:16px;max-width:760px;}
h3{font-size:22px;line-height:1.35;font-weight:600;}
h4{font-size:18px;line-height:1.4;font-weight:600;}
.num{font-variant-numeric:tabular-nums;font-weight:700;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;height:72px;
  background:rgba(6,11,20,.72);
  border-bottom:1px solid transparent;
  transition:background-color var(--t),border-color var(--t),box-shadow var(--t),backdrop-filter var(--t);
}
.site-header.is-scrolled{
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018)),rgba(6,11,20,.78);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.nav-wrap{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:30px;height:30px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:var(--glow);position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;border-radius:4px;
  border:2px solid rgba(4,18,26,.75);border-right-color:transparent;border-bottom-color:transparent;
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.brand-text em{font-style:normal;color:var(--primary);}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;padding:8px 13px;border-radius:8px;
  font-size:15px;color:var(--text-2);white-space:nowrap;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05);}
.nav-links a.active{color:var(--primary);}
.nav-links a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;box-shadow:0 0 10px rgba(34,211,238,.8);
}
.nav-cta{margin-left:10px;}
.burger{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.burger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform var(--t),opacity var(--t);}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.is-open span:nth-child(2){opacity:0;}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.drawer-mask{
  position:fixed;inset:0;background:rgba(4,8,14,.66);z-index:130;
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
  backdrop-filter:blur(2px);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(360px,88vw);z-index:140;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02)),rgba(10,18,31,.96);
  border-left:var(--glass-line);
  backdrop-filter:blur(16px) saturate(140%);
  display:flex;flex-direction:column;padding:24px;
  transform:translateX(102%);transition:transform 260ms cubic-bezier(.2,.7,.3,1);
}
.drawer.is-open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  color:var(--text-2);font-size:20px;line-height:1;
}
.drawer-close:hover{color:var(--text);border-color:rgba(34,211,238,.5);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;flex:1;}
.drawer-nav a{
  font-size:18px;padding:14px 12px;border-radius:10px;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--primary);background:var(--primary-soft);}
.drawer-foot{margin-top:20px;display:flex;flex-direction:column;gap:12px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 30px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform var(--t),box-shadow var(--t),background-color var(--t),border-color var(--t),color var(--t),filter var(--t);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#22D3EE,#0E9FB4);color:#04121A;
  box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 16px 38px -12px rgba(34,211,238,.7);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 18px -8px rgba(34,211,238,.55);}
.btn-primary:disabled,.btn-primary[aria-disabled="true"]{opacity:.45;box-shadow:none;transform:none;filter:grayscale(.2);cursor:not-allowed;}
.btn-ghost{
  background:transparent;color:var(--text);
  border:1px solid rgba(255,255,255,.18);
}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(34,211,238,.6);color:var(--primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:15px;font-weight:600;
}
.link-arrow .arw{transition:transform var(--t);display:inline-block;}
.link-arrow:hover .arw{transform:translateX(4px);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;padding:5px 10px;border-radius:var(--r-badge);
  background:var(--primary-soft);color:var(--primary);
  border:1px solid rgba(34,211,238,.2);
}
.badge-accent{background:rgba(240,178,74,.12);color:var(--accent);border-color:rgba(240,178,74,.28);}
.badge-ok{background:rgba(74,222,128,.12);color:var(--success);border-color:rgba(74,222,128,.28);}

/* ---------- Hero ---------- */
.hero{padding:56px 0 0;}
.hero-card{
  position:relative;border-radius:var(--r-panel);overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--sh-2);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(115deg,rgba(6,11,20,.92) 0%,rgba(6,11,20,.78) 45%,rgba(6,11,20,.68) 100%),
                   url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero-grid-lines{
  position:absolute;inset:0;opacity:.055;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero-glow{
  position:absolute;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.42),transparent 68%);
  filter:blur(120px);pointer-events:none;
}
.hero-glow.g1{top:-180px;left:-120px;}
.hero-glow.g2{bottom:-220px;right:-100px;background:radial-gradient(circle,rgba(240,178,74,.22),transparent 68%);}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.25fr .85fr;gap:48px;align-items:center;
  padding:72px 56px;
}
.hero h1{
  font-size:48px;line-height:1.2;font-weight:700;letter-spacing:-.01em;
}
.hero h1 em{font-style:normal;color:var(--primary);}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text-2);max-width:520px;}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-badges{margin-top:30px;display:flex;flex-wrap:wrap;gap:10px;}
.hero-badges .badge{background:rgba(255,255,255,.05);color:var(--text-2);border-color:var(--line);}
.hero-glass{
  background:var(--glass);
  border:var(--glass-line);
  border-radius:var(--r-panel);
  padding:28px;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-2);
}
.hero-glass h4{font-size:15px;color:var(--text-2);font-weight:500;margin-bottom:18px;}
.stat-list{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.stat-item{border-top:1px solid var(--line);padding-top:14px;}
.stat-item .num{display:block;font-size:30px;color:var(--accent);letter-spacing:-.01em;}
.stat-item span.lbl{display:block;margin-top:4px;font-size:13px;color:var(--text-2);}

/* ---------- 价值主张条 ---------- */
.value-bar{padding:44px 0;}
.value-row{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.value-item{padding:26px 24px;border-left:1px solid var(--line);}
.value-item:first-child{border-left:none;}
.value-item .vi-idx{font-size:13px;color:var(--primary);letter-spacing:.1em;}
.value-item h4{margin-top:8px;font-size:17px;}
.value-item p{margin-top:6px;font-size:14px;color:var(--text-2);line-height:1.65;}

/* ---------- 功能分组 ---------- */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:44px 0;border-top:1px solid var(--line);
}
.feature-row:first-of-type{border-top:none;padding-top:0;}
.feature-row.reverse .feature-media{order:2;}
.feature-row.reverse .feature-body{order:1;}
.feature-media{position:relative;}
.feature-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-card);border:1px solid var(--line);
  transition:transform var(--t),border-color var(--t);
}
.feature-row:hover .feature-media img{border-color:rgba(34,211,238,.4);transform:scale(1.02);}
.feature-body h3{margin-top:14px;}
.feature-body>p{margin-top:14px;color:var(--text-2);font-size:15.5px;max-width:640px;}
.feature-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.feature-list li{display:flex;gap:10px;font-size:15px;color:var(--text-2);}
.feature-list li::before{
  content:"";flex-shrink:0;width:6px;height:6px;border-radius:50%;
  background:var(--primary);margin-top:11px;box-shadow:0 0 8px rgba(34,211,238,.7);
}
.feature-body .link-arrow{margin-top:22px;}

/* ---------- 使用场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.scene-card:hover{border-color:rgba(34,211,238,.4);box-shadow:var(--sh-2);transform:translateY(-3px);}
.scene-num{
  width:44px;height:44px;border-radius:50%;
  border:1px solid rgba(34,211,238,.55);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:0 0 18px -6px rgba(34,211,238,.6);
}
.scene-card h4{margin-top:18px;font-size:18px;}
.scene-card p{margin-top:10px;font-size:14.5px;color:var(--text-2);}
.scene-card ul{margin-top:16px;display:flex;flex-direction:column;gap:9px;border-top:1px solid var(--line);padding-top:16px;}
.scene-card ul li{font-size:14px;color:var(--text-2);display:flex;gap:8px;}
.scene-card ul li::before{content:"—";color:var(--primary);flex-shrink:0;}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;}
.case-main{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;display:flex;flex-direction:column;gap:20px;
  transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.case-main:hover{border-color:rgba(34,211,238,.4);transform:translateY(-3px);box-shadow:var(--sh-2);}
.case-main img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:12px;border:1px solid var(--line);
}
.case-quote{
  border-left:3px solid var(--primary);padding-left:18px;
  color:var(--text);font-size:16px;line-height:1.8;
}
.case-quote small{display:block;margin-top:8px;color:var(--text-2);font-size:13px;}
.case-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.case-stats .cs{border-top:1px solid var(--line);padding-top:12px;}
.case-stats .cs b{display:block;color:var(--accent);font-size:22px;font-variant-numeric:tabular-nums;}
.case-stats .cs span{font-size:13px;color:var(--text-2);}
.case-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.case-small{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;display:flex;flex-direction:column;gap:12px;
  transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.case-small:hover{border-color:rgba(34,211,238,.4);transform:translateY(-3px);box-shadow:var(--sh-2);}
.case-small p{font-size:14.5px;color:var(--text-2);}

/* ---------- 最新信息 ---------- */
.latest-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px;}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color var(--t),transform var(--t),box-shadow var(--t);
  overflow:hidden;
}
.post-card:hover{border-color:rgba(34,211,238,.4);transform:translateY(-3px);box-shadow:var(--sh-2);}
.post-card a{display:flex;flex-direction:column;height:100%;padding:24px;}
.post-card h3{font-size:17px;font-weight:600;line-height:1.5;margin-top:14px;}
.post-card p{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.7;flex:1;}
.post-meta{
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-2);
}
.post-meta .readmore{color:var(--primary);font-weight:600;}
.empty-state{
  grid-column:1/-1;text-align:center;padding:48px 24px;
  background:var(--glass);border:var(--glass-line);border-radius:var(--r-panel);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-state svg{width:32px;height:32px;stroke:var(--primary);}
.empty-state p{color:var(--text-2);font-size:15px;}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.price-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-panel);
  padding:28px;display:flex;flex-direction:column;gap:18px;
  transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.price-card:hover{border-color:rgba(34,211,238,.35);transform:translateY(-3px);box-shadow:var(--sh-2);}
.price-card.featured{
  background:var(--glass);border:1px solid rgba(34,211,238,.45);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 20px 50px -22px rgba(34,211,238,.55),var(--sh-2);
  transform:translateY(-12px);
}
.price-card.featured:hover{transform:translateY(-14px);}
.price-top{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.price-name{font-size:18px;font-weight:600;}
.price-amount{display:flex;align-items:baseline;gap:6px;}
.price-amount b{font-size:34px;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1;}
.price-amount span{font-size:14px;color:var(--text-2);}
.price-desc{font-size:14px;color:var(--text-2);border-bottom:1px solid var(--line);padding-bottom:16px;}
.price-list{display:flex;flex-direction:column;gap:11px;flex:1;}
.price-list li{font-size:14.5px;color:var(--text-2);display:flex;gap:9px;}
.price-list li::before{
  content:"";flex-shrink:0;width:5px;height:5px;border-radius:50%;
  background:var(--primary);margin-top:11px;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--glass);border:var(--glass-line);border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  overflow:hidden;transition:border-color var(--t);
}
.faq-item:hover{border-color:rgba(34,211,238,.35);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 24px;min-height:60px;text-align:left;
  font-size:18px;font-weight:600;color:var(--text);
}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  border:1px solid rgba(34,211,238,.45);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;transition:transform var(--t);
}
.faq-item.open .faq-icon{transform:rotate(90deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height 260ms cubic-bezier(.2,.7,.3,1);
  border-top:1px solid transparent;
}
.faq-item.open .faq-a{border-top-color:var(--line);}
.faq-a p{padding:18px 24px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ---------- CTA + 表单 ---------- */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--r-panel);
  border:1px solid var(--line);background:var(--surface);
  display:grid;grid-template-columns:1fr 1fr;gap:48px;
  padding:56px;
}
.cta-panel::before{
  content:"";position:absolute;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.34),transparent 68%);
  filter:blur(120px);top:-220px;left:-140px;pointer-events:none;
}
.cta-copy{position:relative;z-index:2;}
.cta-copy h2{font-size:30px;line-height:1.32;}
.cta-copy p{margin-top:16px;color:var(--text-2);font-size:15.5px;max-width:460px;}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:10px;}
.cta-points li{font-size:14.5px;color:var(--text-2);display:flex;gap:9px;}
.cta-points li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--primary);margin-top:11px;flex-shrink:0;}
.form-card{
  position:relative;z-index:2;
  background:var(--glass);border:var(--glass-line);border-radius:var(--r-panel);
  padding:28px;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--r-btn);
  background:var(--surface);border:1px solid var(--line);color:var(--text);
  transition:border-color var(--t),box-shadow var(--t),background-color var(--t);
}
.field textarea{min-height:104px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:rgba(157,176,198,.6);}
.field input:hover,.field textarea:hover{border-color:rgba(140,178,214,.3);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(34,211,238,.18);
}
.field input:disabled,.field textarea:disabled{opacity:.45;cursor:not-allowed;}
.form-note{margin-top:12px;font-size:12.5px;color:var(--text-2);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:72px 0 0;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:320px;line-height:1.75;}
.footer-col h4{font-size:15px;color:var(--text);margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.75;}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);
  padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:14px 28px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-2);
}
.footer-bottom .fb-links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity 520ms ease,transform 520ms cubic-bezier(.2,.7,.3,1);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  *{transition-duration:1ms !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .container{padding:0 24px;}
  .hero-inner{padding:60px 40px;gap:36px;}
  .hero h1{font-size:44px;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .case-grid{grid-template-columns:1fr;}
  .case-side{grid-template-rows:none;grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-col.footer-contact{grid-column:1/-1;}
}
@media (max-width:992px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .burger{display:flex;}
  .hero-inner{grid-template-columns:1fr;padding:48px 32px;}
  .hero h1{font-size:38px;}
  .hero-sub{max-width:none;}
  .feature-row{grid-template-columns:1fr;gap:32px;padding:36px 0;}
  .feature-row.reverse .feature-media{order:1;}
  .feature-row.reverse .feature-body{order:2;}
  .scene-grid{grid-template-columns:1fr;}
  .price-grid{grid-template-columns:1fr;gap:20px;}
  .price-card.featured{transform:none;}
  .price-card.featured:hover{transform:translateY(-3px);}
  .cta-panel{grid-template-columns:1fr;padding:40px 32px;gap:32px;}
  .value-row{grid-template-columns:1fr 1fr;}
  .value-item{border-left:none;border-top:1px solid var(--line);}
  .value-item:nth-child(1),.value-item:nth-child(2){border-top:none;}
  .value-item:nth-child(even){border-left:1px solid var(--line);}
}
@media (max-width:768px){
  body{padding-top:64px;}
  .site-header,.nav-wrap{height:64px;}
  .sec{padding:56px 0;}
  .container{padding:0 18px;}
  .hero{padding:36px 0 0;}
  .hero-inner{padding:36px 22px;}
  .hero h1{font-size:32px;}
  h2.sec-title{font-size:26px;}
  h3{font-size:20px;}
  .sec-head{margin-bottom:28px;}
  .post-grid{grid-template-columns:1fr;}
  .case-side{grid-template-columns:1fr;}
  .case-stats{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .site-footer{padding:56px 0 0;margin-top:56px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .stat-list{grid-template-columns:1fr 1fr;}
  .cta-panel{padding:32px 22px;}
  .faq-q{font-size:16px;padding:16px 20px;min-height:56px;}
  .faq-a p{padding:16px 20px;}
}
@media (max-width:480px){
  .hero h1{font-size:30px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .value-row{grid-template-columns:1fr;}
  .value-item{border-left:none !important;}
  .card,.scene-card,.case-main,.case-small,.price-card,.post-card a,.form-card{padding:20px;}
  .hero-glass{padding:22px;}
  .btn{padding:13px 22px;}
}

/* roulang page: category1 */
:root{
  --bg:#060B14;
  --bg-soft:#0A121F;
  --surface:#0E1726;
  --surface-2:#132135;
  --primary:#22D3EE;
  --primary-deep:#0E9FB4;
  --primary-soft:rgba(34,211,238,.12);
  --accent:#F0B24A;
  --text:#E8F0F8;
  --text-2:#9DB0C6;
  --line:rgba(140,178,214,.14);
  --success:#4ADE80;
  --danger:#F87171;
  --sh-1:0 2px 10px rgba(0,0,0,.35);
  --sh-2:0 14px 40px -18px rgba(0,0,0,.7);
  --glow:0 10px 30px -10px rgba(34,211,238,.55);
  --r-card:16px;
  --r-panel:20px;
  --r-btn:10px;
  --r-input:10px;
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --glass:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  --glass-border:1px solid rgba(120,190,220,.16);
  --font:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:12px;}
a{color:var(--primary);text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t);}
a:hover{color:#7BE6F7;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-0.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(34,211,238,.32);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-soft);}
::-webkit-scrollbar-thumb{background:#22374f;border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:#2d4a68;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;box-shadow:0 0 0 4px rgba(34,211,238,.18);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.tnum{font-variant-numeric:tabular-nums;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:900;
  height:72px;display:flex;align-items:center;
  background:linear-gradient(180deg,rgba(6,11,20,.86),rgba(6,11,20,.52));
  border-bottom:1px solid transparent;
  transition:background-color var(--t),border-color var(--t),box-shadow var(--t),backdrop-filter var(--t);
}
.site-header.scrolled{
  background:var(--glass);
  border-bottom:1px solid rgba(120,190,220,.16);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-1);
}
.header-inner{display:flex;align-items:center;gap:24px;width:100%;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:26px;height:26px;border-radius:8px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:0 6px 18px -6px rgba(34,211,238,.7);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;border-radius:3px;
  border:2px solid rgba(4,18,26,.85);border-right-color:transparent;border-bottom-color:transparent;
  transform:rotate(45deg);
}
.brand-text{font-size:19px;font-weight:700;color:var(--text);letter-spacing:-0.01em;}
.brand-text em{font-style:normal;color:var(--primary);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;color:var(--text-2);
  border-radius:8px;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--primary);}
.nav-links a.active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(34,211,238,.8);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:16px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 30px;border-radius:var(--r-btn);border:1px solid transparent;
  transition:transform var(--t),box-shadow var(--t),background-color var(--t),border-color var(--t),color var(--t),opacity var(--t);
  cursor:pointer;
}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-primary{
  background:linear-gradient(135deg,#22D3EE,#0E9FB4);
  color:#04121A;font-weight:600;
  box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 16px 38px -12px rgba(34,211,238,.75);color:#04121A;}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 18px -10px rgba(34,211,238,.6);}
.btn-primary:disabled,.btn-primary[aria-disabled="true"]{opacity:.45;box-shadow:none;filter:none;transform:none;cursor:not-allowed;}
.btn-ghost{
  background:transparent;color:var(--text);
  border:1px solid rgba(255,255,255,.18);
}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(34,211,238,.7);color:var(--text);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-ghost:disabled{opacity:.45;cursor:not-allowed;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:14px;font-weight:600;
}
.text-link .arw{transition:transform var(--t);}
.text-link:hover .arw{transform:translateX(4px);}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--bg-soft);}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-block;font-size:12px;line-height:1;letter-spacing:.08em;
  padding:6px 12px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);
  border:1px solid rgba(34,211,238,.24);margin-bottom:16px;
}
.section-head h2{font-size:32px;line-height:1.3;margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:16px;max-width:760px;}
.lead{font-size:17px;line-height:1.85;color:var(--text-2);max-width:780px;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:104px 0 0;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-2);}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .cur{color:var(--primary);font-weight:600;}

/* ---------- Hero ---------- */
.cat-hero{position:relative;padding:32px 0 72px;}
.cat-hero .hero-panel{
  position:relative;overflow:hidden;border-radius:var(--r-panel);
  border:1px solid var(--line);
  background:var(--surface);
  padding:56px 48px;
  box-shadow:var(--sh-2);
}
.cat-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.32;
}
.cat-hero .hero-panel::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(6,11,20,.72),rgba(6,11,20,.88)),
    repeating-linear-gradient(0deg,rgba(140,178,214,.05) 0 1px,transparent 1px 64px),
    repeating-linear-gradient(90deg,rgba(140,178,214,.05) 0 1px,transparent 1px 64px);
  pointer-events:none;
}
.cat-hero .hero-inner{position:relative;z-index:2;max-width:780px;}
.cat-hero h1{font-size:46px;line-height:1.2;font-weight:700;margin-bottom:18px;}
.cat-hero .sub{font-size:17px;color:var(--text-2);max-width:720px;margin-bottom:28px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.tag{
  font-size:12px;line-height:1;padding:6px 12px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 图文交替 ---------- */
.alt-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:48px 0;border-top:1px solid var(--line);
}
.alt-row:first-of-type{border-top:none;padding-top:0;}
.alt-row.rev .alt-media{order:2;}
.alt-row.rev .alt-body{order:1;}
.alt-media{position:relative;}
.alt-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-card);border:1px solid var(--line);
  background:var(--surface-2);
  transition:transform var(--t),border-color var(--t);
}
.alt-media:hover img{transform:scale(1.02);border-color:rgba(34,211,238,.4);}
.alt-body h3{font-size:22px;line-height:1.35;margin:12px 0 14px;}
.alt-body p{color:var(--text-2);font-size:16px;margin-bottom:20px;}
.point-list{display:flex;flex-direction:column;gap:12px;margin-bottom:22px;}
.point-list li{display:flex;gap:10px;font-size:15px;color:var(--text-2);line-height:1.7;}
.point-list li::before{
  content:"";flex-shrink:0;width:7px;height:7px;border-radius:50%;
  margin-top:9px;background:var(--primary);box-shadow:0 0 10px rgba(34,211,238,.8);
}

/* ---------- 表格 ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;background:var(--surface);
}
.table-scroll{overflow-x:auto;}
table.spec{width:100%;border-collapse:collapse;min-width:720px;}
table.spec caption{
  text-align:left;padding:20px 24px 0;color:var(--text-2);font-size:14px;
}
table.spec thead th{
  background:linear-gradient(135deg,#22D3EE,#0E9FB4);
  color:#04121A;font-weight:700;font-size:14px;letter-spacing:.01em;
  text-align:left;padding:14px 20px;white-space:nowrap;
}
table.spec tbody td{
  padding:15px 20px;font-size:15px;color:var(--text-2);
  border-top:1px solid var(--line);
}
table.spec tbody tr:nth-child(even){background:rgba(255,255,255,.022);}
table.spec tbody tr:hover{background:rgba(34,211,238,.06);}
table.spec tbody td:first-child{color:var(--text);font-weight:600;}
table.spec .mono{color:var(--accent);font-variant-numeric:tabular-nums;font-weight:600;}

/* ---------- 编号泳道 ---------- */
.lanes{display:grid;gap:24px;}
.lane{
  display:grid;grid-template-columns:auto 1fr;gap:24px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:28px;
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.lane:hover{border-color:rgba(34,211,238,.4);box-shadow:var(--sh-2);transform:translateY(-3px);}
.lane-no{
  width:52px;height:52px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(34,211,238,.5);color:var(--primary);
  font-size:16px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:0 0 22px -8px rgba(34,211,238,.9);
}
.lane h3{font-size:19px;margin-bottom:8px;}
.lane p{color:var(--text-2);font-size:15px;margin-bottom:12px;}
.lane ul{display:flex;flex-direction:column;gap:8px;}
.lane ul li{font-size:14px;color:var(--text-2);padding-left:16px;position:relative;}
.lane ul li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:2px;
  background:var(--primary-soft);border:1px solid var(--primary);
}

/* ---------- 规格提示卡 ---------- */
.note-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px;}
.note-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:28px;
  transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.note-card:hover{border-color:rgba(34,211,238,.4);transform:translateY(-3px);box-shadow:var(--sh-2);}
.note-card h4{font-size:18px;margin-bottom:10px;}
.note-card p{font-size:14px;color:var(--text-2);}
.note-card .num{
  font-size:26px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;display:block;margin-bottom:12px;
}

/* ---------- CTA / 表单 ---------- */
.cta-section{padding:96px 0;}
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--r-panel);border:var(--glass-border);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  padding:56px 48px;
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;
  box-shadow:var(--sh-2);
}
.cta-panel::before{
  content:"";position:absolute;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.22),transparent 70%);
  filter:blur(120px);top:-160px;left:-120px;pointer-events:none;
}
.cta-copy{position:relative;z-index:2;}
.cta-copy h2{font-size:32px;line-height:1.3;margin-bottom:16px;}
.cta-copy p{color:var(--text-2);margin-bottom:20px;}
.cta-list{display:flex;flex-direction:column;gap:12px;}
.cta-list li{font-size:15px;color:var(--text-2);padding-left:20px;position:relative;}
.cta-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  border:1px solid var(--primary);box-shadow:0 0 10px rgba(34,211,238,.7);
}
.cta-form{position:relative;z-index:2;display:flex;flex-direction:column;gap:16px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:14px;color:var(--text-2);}
.field input,.field textarea{
  width:100%;padding:13px 14px;
  font-family:inherit;font-size:15px;color:var(--text);
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-input);
  transition:border-color var(--t),box-shadow var(--t),background-color var(--t);
}
.field textarea{min-height:110px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:rgba(157,176,198,.6);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);
  background:var(--surface-2);
  box-shadow:0 0 0 3px rgba(34,211,238,.18);
}
.field input:disabled,.field textarea:disabled{opacity:.45;cursor:not-allowed;}
.form-hint{font-size:13px;color:var(--text-2);}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-soft);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;
  padding-bottom:40px;
}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--primary);}
.footer-brand p{font-size:14px;color:var(--text-2);margin-top:16px;max-width:340px;}
.footer-contact p{font-size:14px;color:var(--text-2);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  border-top:1px solid var(--line);padding-top:24px;
  font-size:13px;color:var(--text-2);
}
.footer-bottom .fb-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom .fb-links a{color:var(--text-2);}
.footer-bottom .fb-links a:hover{color:var(--primary);}

/* ---------- 移动端抽屉 ---------- */
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  background:transparent;border:1px solid var(--line);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  transition:border-color var(--t),background-color var(--t);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform var(--t),opacity var(--t);}
.nav-toggle:hover{border-color:rgba(34,211,238,.6);background:rgba(255,255,255,.04);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,7,13,.68);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:940;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);z-index:950;
  background:linear-gradient(160deg,rgba(14,23,38,.96),rgba(10,18,31,.96));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-left:1px solid rgba(120,190,220,.16);
  transform:translateX(102%);
  transition:transform 220ms cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;
  padding:22px 22px 26px;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;background:transparent;
  border:1px solid var(--line);color:var(--text);font-size:18px;line-height:1;
  display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{border-color:rgba(34,211,238,.6);}
.drawer-nav{display:flex;flex-direction:column;gap:20px;}
.drawer-nav a{font-size:18px;color:var(--text-2);text-align:left;}
.drawer-nav a.active{color:var(--primary);}
.drawer-foot{margin-top:auto;padding-top:24px;border-top:1px solid var(--line);}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity 480ms cubic-bezier(.2,.7,.3,1),transform 480ms cubic-bezier(.2,.7,.3,1);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .container{padding:0 24px;}
  .alt-row{gap:36px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-contact{grid-column:1 / -1;}
}
@media (max-width:992px){
  .nav-links,.header-actions .btn{display:none;}
  .nav-toggle{display:flex;}
  .header-actions{margin-left:auto;}
  .section{padding:72px 0;}
  .cta-section{padding:72px 0;}
  .cat-hero .hero-panel{padding:44px 32px;}
  .cat-hero h1{font-size:36px;}
  .alt-row{grid-template-columns:1fr;gap:28px;}
  .alt-row.rev .alt-media{order:1;}
  .alt-row.rev .alt-body{order:2;}
  .cta-panel{grid-template-columns:1fr;gap:36px;padding:40px 32px;}
  .note-grid{grid-template-columns:1fr 1fr;}
  .crumb-bar{padding-top:96px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:26px;}
  .cat-hero h1{font-size:31px;}
  .cat-hero .sub{font-size:15px;}
  .cat-hero .hero-panel{padding:34px 22px;}
  .note-grid{grid-template-columns:1fr;}
  .lane{grid-template-columns:1fr;gap:16px;padding:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  table.spec{min-width:640px;}
}
@media (max-width:480px){
  .btn{width:100%;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .note-card,.lane,.cta-panel{padding:20px;}
  .cat-hero h1{font-size:28px;}
  .breadcrumb{font-size:13px;}
}

/* roulang page: article */
:root{
  --bg:#060B14;
  --bg-soft:#0A121F;
  --surface:#0E1726;
  --surface-2:#132135;
  --primary:#22D3EE;
  --primary-deep:#0E9FB4;
  --primary-soft:rgba(34,211,238,.12);
  --accent:#F0B24A;
  --text:#E8F0F8;
  --text-2:#9DB0C6;
  --line:rgba(140,178,214,.14);
  --success:#4ADE80;
  --danger:#F87171;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:10px;
  --r-input:10px;
  --sh-1:0 2px 10px rgba(0,0,0,.35);
  --sh-2:0 14px 40px -18px rgba(0,0,0,.7);
  --glow:0 10px 30px -10px rgba(34,211,238,.55);
  --ease:180ms cubic-bezier(.2,.7,.3,1);
  --maxw:1200px;
  --glass-bg:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  --glass-bd:1px solid rgba(120,190,220,.16);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
a:hover{color:var(--primary)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,textarea,select{font:inherit;color:inherit}
::selection{background:rgba(34,211,238,.28);color:#fff}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 3px rgba(34,211,238,.2);border-radius:6px}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#080E19}
::-webkit-scrollbar-thumb{background:#1E3247;border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:#2A4761}

.container{max-width:var(--maxw);margin:0 auto;padding:0 32px}
.tnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1px solid transparent;
  padding:14px 30px;font-size:15px;font-weight:600;line-height:1.2;
  cursor:pointer;text-align:center;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#22D3EE,#0E9FB4);
  color:#04121A;box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 38px -12px rgba(34,211,238,.75);color:#04121A}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 18px -10px rgba(34,211,238,.6)}
.btn-primary[disabled],.btn-primary.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.btn-ghost{
  background:transparent;border-color:rgba(255,255,255,.18);color:var(--text);
}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(34,211,238,.55);color:var(--text);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}

.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary)}
.link-arrow .ar{transition:transform var(--ease)}
.link-arrow:hover .ar{transform:translateX(4px)}
.link-arrow:hover{text-decoration:none}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;font-size:12px;line-height:1;font-weight:600;
  background:var(--primary-soft);color:var(--primary);border:1px solid rgba(34,211,238,.22);
}
.badge-accent{background:rgba(240,178,74,.12);color:var(--accent);border-color:rgba(240,178,74,.28)}
.badge-ok{background:rgba(74,222,128,.12);color:var(--success);border-color:rgba(74,222,128,.28)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,11,20,.82);
  border-bottom:1px solid transparent;
  transition:background-color var(--ease),border-color var(--ease),box-shadow var(--ease),backdrop-filter var(--ease);
}
.site-header.scrolled{
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  box-shadow:0 10px 30px -18px rgba(0,0,0,.9);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-size:19px;font-weight:700;letter-spacing:-.01em}
.brand:hover{color:var(--text)}
.brand-mark{
  width:26px;height:26px;border-radius:8px;flex:none;
  background:linear-gradient(135deg,#22D3EE,#0E9FB4);
  box-shadow:0 6px 18px -6px rgba(34,211,238,.7);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;border-radius:3px;
  background:rgba(4,18,26,.75);
}
.brand-text em{font-style:normal;color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{
  position:relative;color:var(--text-2);font-size:15px;font-weight:500;
  padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease),box-shadow var(--ease);
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--primary);text-shadow:0 0 14px rgba(34,211,238,.5)}
.nav-links a.active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(34,211,238,.8)}
.header-cta{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--surface);border:1px solid var(--line);cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform var(--ease)
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.drawer-mask{
  position:fixed;inset:0;background:rgba(4,8,15,.7);backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:90;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(360px,88vw);z-index:95;
  background:linear-gradient(160deg,rgba(19,33,53,.96),rgba(10,18,31,.98));
  border-left:var(--glass-bd);
  backdrop-filter:blur(14px) saturate(140%);
  transform:translateX(100%);transition:transform var(--ease);
  display:flex;flex-direction:column;padding:24px;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{
  width:40px;height:40px;border-radius:10px;background:rgba(255,255,255,.05);
  border:1px solid var(--line);color:var(--text);font-size:20px;cursor:pointer;line-height:1;
}
.drawer-nav{display:flex;flex-direction:column;gap:20px;font-size:18px}
.drawer-nav a{color:var(--text)}
.drawer-nav a.active{color:var(--primary)}
.drawer-foot{margin-top:auto;padding-top:24px;border-top:1px solid var(--line)}

/* ============ 面包屑 ============ */
.crumb-bar{padding:24px 0 0}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-2)}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:rgba(157,176,198,.5)}
.crumbs .current{color:var(--primary)}

/* ============ 文章头部 ============ */
.article-head{padding:28px 0 8px}
.article-head .kicker{margin-bottom:14px}
.article-head h1{
  font-size:38px;line-height:1.25;max-width:900px;
}
.article-lead{
  margin-top:16px;max-width:820px;color:var(--text-2);font-size:16.5px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:22px;color:var(--text-2);font-size:14px;
}
.meta-row .vline{width:1px;height:14px;background:var(--line);display:inline-block}
.hero-figure{
  margin-top:32px;border-radius:var(--r-panel);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-2);position:relative;
}
.hero-figure img{width:100%;height:auto;aspect-ratio:16/7;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,20,.05) 30%,rgba(6,11,20,.72) 100%);
  pointer-events:none;
}
.hero-figure figcaption{
  position:absolute;left:24px;bottom:20px;right:24px;z-index:2;
  font-size:13px;color:rgba(232,240,248,.82);
}

/* ============ 主体布局 ============ */
.article-main{padding:56px 0 96px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 312px;gap:56px;align-items:start}
.article-col{max-width:820px;min-width:0}

.article-body{font-size:16px;line-height:1.75;color:var(--text)}
.article-body>*+*{margin-top:20px}
.article-body p{margin:0;color:#DCE7F2}
.article-body h2{
  font-size:26px;line-height:1.35;margin-top:40px;
  border-left:3px solid var(--primary);padding-left:12px;
}
.article-body h3{font-size:21px;line-height:1.4;margin-top:32px}
.article-body h4{font-size:17.5px;line-height:1.45;margin-top:26px;color:var(--text)}
.article-body ul,.article-body ol{padding-left:22px}
.article-body ul{list-style:none;padding-left:4px}
.article-body ul li{position:relative;padding-left:20px;margin-top:10px;line-height:1.9}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 10px rgba(34,211,238,.6);
}
.article-body ol{list-style:decimal;color:#DCE7F2}
.article-body ol li{margin-top:10px;line-height:1.9}
.article-body ol li::marker{color:var(--primary);font-weight:700}
.article-body blockquote{
  background:var(--surface-2);border-left:3px solid var(--primary);
  border-radius:12px;padding:20px;color:var(--text-2);
}
.article-body blockquote p{color:var(--text-2)}
.article-body img{border-radius:12px;border:1px solid var(--line);margin:8px 0}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(34,211,238,.35)}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-body strong{color:#fff}
.article-body hr{border:0;height:1px;background:var(--line);margin:36px 0}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;font-size:15px;
}
.article-body thead th{
  background:linear-gradient(135deg,rgba(34,211,238,.22),rgba(14,159,180,.18));
  color:#EAF8FC;font-weight:600;text-align:left;padding:13px 16px;font-size:14px;
  border-bottom:1px solid var(--line);
}
.article-body tbody td{padding:12px 16px;border-bottom:1px solid var(--line);color:var(--text-2)}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body code{
  background:var(--surface-2);border:1px solid var(--line);border-radius:6px;
  padding:2px 6px;font-size:14px;color:var(--primary);
}

.empty-state{
  background:var(--glass-bg);border:var(--glass-bd);border-radius:var(--r-panel);
  backdrop-filter:blur(14px) saturate(140%);
  padding:48px 28px;text-align:center;
}
.empty-state .ico{
  width:32px;height:32px;margin:0 auto 14px;border-radius:9px;
  border:1.5px solid var(--primary);position:relative;
}
.empty-state .ico::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:12px;height:1.5px;background:var(--primary);box-shadow:0 0 10px rgba(34,211,238,.7);
}
.empty-state p{color:var(--text-2);margin-bottom:20px}

/* ============ 侧栏 ============ */
.side-col{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;transition:border-color var(--ease),box-shadow var(--ease);
}
.side-card:hover{border-color:rgba(34,211,238,.35);box-shadow:var(--sh-2)}
.side-card h3{font-size:16px;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--primary);display:block}
.side-list li+li{margin-top:12px;padding-top:12px;border-top:1px solid var(--line)}
.side-list a{display:block;font-size:14.5px;color:var(--text);line-height:1.55}
.side-list a:hover{color:var(--primary)}
.side-list span{display:block;font-size:12.5px;color:var(--text-2);margin-top:4px}
.side-note{background:var(--glass-bg);border:var(--glass-bd);backdrop-filter:blur(14px) saturate(140%)}
.side-note p{font-size:14px;color:var(--text-2);line-height:1.7}

/* ============ 文末区 ============ */
.article-foot{margin-top:48px;padding-top:32px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tag-row .label{font-size:13px;color:var(--text-2);margin-right:4px}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.post-nav a{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.post-nav a:hover{border-color:rgba(34,211,238,.4);transform:translateY(-3px);box-shadow:var(--sh-2)}
.post-nav .dir{font-size:12.5px;color:var(--text-2);display:block;margin-bottom:8px}
.post-nav .ttl{font-size:15.5px;font-weight:600;color:var(--text);line-height:1.5}
.post-nav .right{text-align:right}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:40px}
.section-head .eyebrow{display:inline-block;margin-bottom:14px}
.section-head h2{font-size:32px;line-height:1.3}
.section-head p{margin-top:14px;color:var(--text-2)}

.cards-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.card:hover{border-color:rgba(34,211,238,.4);transform:translateY(-3px);box-shadow:var(--sh-2)}
.card-media{overflow:hidden;border-bottom:1px solid var(--line)}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:17.5px;line-height:1.5}
.card-body h3 a{color:var(--text)}
.card-body h3 a:hover{color:var(--primary)}
.card-body p{font-size:14px;color:var(--text-2);line-height:1.7}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--text-2);
}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:920px}
.faq-item{
  background:var(--glass-bg);border:var(--glass-bd);border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(140%);overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:rgba(34,211,238,.35)}
.faq-item.open{border-color:rgba(34,211,238,.45);box-shadow:var(--sh-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;cursor:pointer;text-align:left;
  padding:0 24px;min-height:62px;font-size:18px;font-weight:600;color:var(--text);
  transition:color var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  flex:none;width:22px;height:22px;position:relative;
  transition:transform var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);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;transition:opacity var(--ease)}
.faq-item.open .faq-icon{transform:rotate(90deg)}
.faq-item.open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--ease)}
.faq-a-inner{padding:0 24px 24px;border-top:1px solid var(--line);padding-top:18px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ============ 表单 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--bg-soft);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.16),transparent 70%);
  filter:blur(120px);left:-120px;top:-160px;pointer-events:none;
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;position:relative;z-index:2}
.cta-copy h2{font-size:32px;line-height:1.3}
.cta-copy p{margin-top:16px;color:var(--text-2);max-width:520px}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:10px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--text-2)}
.cta-points li::before{
  content:"";flex:none;margin-top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 10px rgba(34,211,238,.7);
}
.form-card{
  background:var(--glass-bg);border:var(--glass-bd);border-radius:var(--r-panel);
  backdrop-filter:blur(14px) saturate(140%);padding:32px;box-shadow:var(--sh-2);
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field textarea{
  width:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-input);
  padding:13px 14px;font-size:15px;color:var(--text);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{min-height:104px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(157,176,198,.6)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(34,211,238,.2)
}
.field input:disabled,.field textarea:disabled{opacity:.45;cursor:not-allowed}
.form-hint{font-size:12.5px;color:var(--text-2);margin-top:12px}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text)}
.footer-col ul li+li{margin-top:10px}
.footer-col ul a{font-size:14px;color:var(--text-2)}
.footer-col ul a:hover{color:var(--primary)}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);line-height:1.75;max-width:340px}
.footer-contact p{font-size:14px;color:var(--text-2);line-height:1.75}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-2);
}
.footer-bottom .fb-links{display:flex;gap:18px}
.footer-bottom .fb-links a{color:var(--text-2)}
.footer-bottom .fb-links a:hover{color:var(--primary)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(8px);transition:opacity 420ms ease,transform 420ms ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .cards-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-contact{grid-column:1 / -1}
}
@media (max-width:992px){
  .container{padding:0 24px}
  .nav-links,.header-cta .btn{display:none}
  .nav-toggle{display:inline-flex}
  .article-head h1{font-size:32px}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .side-col{position:static;order:2}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .cta-copy p{max-width:none}
  .section{padding:72px 0}
  .article-main{padding:40px 0 72px}
  .article-body h2{font-size:23px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section-head h2{font-size:26px}
  .section-head{margin-bottom:32px}
  .cards-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .post-nav{grid-template-columns:1fr}
  .post-nav .right{text-align:left}
  .article-head h1{font-size:29px}
  .article-lead{font-size:15.5px}
  .hero-figure img{aspect-ratio:16/10}
  .hero-figure figcaption{position:static;padding:14px 18px;background:var(--surface-2);font-size:12.5px}
  .hero-figure::after{background:linear-gradient(180deg,rgba(6,11,20,.05),rgba(6,11,20,.45))}
  .form-card{padding:22px}
  .faq-q{padding:0 18px;font-size:16.5px;min-height:58px}
  .faq-a-inner{padding:0 18px 20px;padding-top:16px;font-size:14.5px}
}
@media (max-width:520px){
  .btn{width:100%;padding:13px 20px}
  .btn.btn-sm{width:auto}
  .card-body{padding:20px}
  .side-card{padding:20px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .meta-row{gap:10px;font-size:13px}
}

/* roulang page: category2 */
:root{
  --bg:#060B14;
  --bg-soft:#0A121F;
  --surface:#0E1726;
  --surface-2:#132135;
  --primary:#22D3EE;
  --primary-deep:#0E9FB4;
  --primary-soft:rgba(34,211,238,.12);
  --accent:#F0B24A;
  --text:#E8F0F8;
  --text-2:#9DB0C6;
  --line:rgba(140,178,214,.14);
  --success:#4ADE80;
  --danger:#F87171;
  --glass:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  --glass-border:1px solid rgba(120,190,220,.16);
  --r-card:16px;
  --r-panel:20px;
  --r-btn:10px;
  --sh-1:0 2px 10px rgba(0,0,0,.35);
  --sh-2:0 14px 40px -18px rgba(0,0,0,.7);
  --sh-glow:0 10px 30px -10px rgba(34,211,238,.55);
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --font:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.75;color:var(--text);
  background:var(--bg);overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:12px}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:48px;line-height:1.2;font-weight:700;letter-spacing:-.01em}
h2{font-size:32px;line-height:1.3;font-weight:700}
h3{font-size:22px;line-height:1.35;font-weight:600}
h4{font-size:18px;line-height:1.4;font-weight:600}
p{color:var(--text-2)}
::selection{background:rgba(34,211,238,.32);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-soft)}
::-webkit-scrollbar-thumb{background:#1d2e45;border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:var(--primary-deep)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(34,211,238,.18);border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-sm{padding:64px 0}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head p{margin-top:14px;font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;line-height:1;letter-spacing:.08em;
  padding:6px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary);
  border:1px solid rgba(34,211,238,.22);margin-bottom:18px;
}
.eyebrow.gold{background:rgba(240,178,74,.12);color:var(--accent);border-color:rgba(240,178,74,.28)}

/* header */
.site-header{
  position:sticky;top:0;z-index:80;background:rgba(6,11,20,.82);
  border-bottom:1px solid transparent;transition:background-color var(--t),border-color var(--t),box-shadow var(--t)
}
.site-header.scrolled{
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:26px;height:26px;border-radius:8px;display:inline-block;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:0 6px 18px -8px rgba(34,211,238,.75);position:relative
}
.brand-mark::after{content:"";position:absolute;inset:8px;border-radius:3px;background:rgba(4,18,26,.75)}
.brand-text{font-size:19px;font-weight:700;letter-spacing:.01em}
.brand-text em{font-style:normal;color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:wrap}
.nav-links a{
  position:relative;font-size:15px;color:var(--text-2);padding:8px 12px;border-radius:10px;
  transition:color var(--t),background-color var(--t)
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(34,211,238,.7)
}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;background:var(--surface);
  border:1px solid var(--line);cursor:pointer;align-items:center;justify-content:center
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.drawer{
  position:fixed;inset:0;z-index:120;display:none
}
.drawer.open{display:block}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(88vw,380px);height:100%;padding:28px 24px;
  background:linear-gradient(160deg,rgba(20,32,50,.96),rgba(10,18,31,.98));
  border-left:var(--glass-border);display:flex;flex-direction:column;
  -webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%)
}
.drawer-mask{position:absolute;inset:0;background:rgba(3,7,14,.62)}
.drawer-close{
  align-self:flex-end;width:40px;height:40px;border-radius:10px;background:var(--surface);
  border:1px solid var(--line);cursor:pointer;font-size:20px;line-height:1
}
.drawer-nav{display:flex;flex-direction:column;gap:20px;margin-top:32px}
.drawer-nav a{font-size:18px;color:var(--text-2)}
.drawer-nav a.active{color:var(--primary)}
.drawer-cta{margin-top:auto;display:block;text-align:center}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;padding:14px 30px;cursor:pointer;border:1px solid transparent;
  transition:transform var(--t),box-shadow var(--t),background-color var(--t),border-color var(--t),color var(--t)
}
.btn-primary{
  background:linear-gradient(135deg,#22D3EE,#0E9FB4);color:#04121A;box-shadow:var(--sh-glow)
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 16px 36px -12px rgba(34,211,238,.7)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(34,211,238,.55);color:var(--primary)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600}
.link-arrow i{font-style:normal;transition:transform var(--t)}
.link-arrow:hover i{transform:translateX(4px)}

/* badges */
.badge{
  display:inline-flex;align-items:center;font-size:12px;line-height:1;padding:5px 11px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);border:1px solid rgba(34,211,238,.2)
}
.badge-gold{background:rgba(240,178,74,.12);color:var(--accent);border-color:rgba(240,178,74,.28)}
.badge-ok{background:rgba(74,222,128,.12);color:var(--success);border-color:rgba(74,222,128,.26)}
.badge-warn{background:rgba(248,113,113,.12);color:var(--danger);border-color:rgba(248,113,113,.26)}

/* breadcrumb */
.crumb{padding:22px 0 0;font-size:14px;color:var(--text-2)}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{margin:0 8px;opacity:.55}
.crumb .now{color:var(--primary)}

/* hero */
.hero{position:relative;overflow:hidden;padding:76px 0 88px;background:var(--bg-soft)}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(140,178,214,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(140,178,214,.055) 1px,transparent 1px);
  background-size:64px 64px;mask-image:radial-gradient(circle at 60% 30%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 60% 30%,#000 0%,transparent 78%);
}
.hero::after{
  content:"";position:absolute;width:480px;height:480px;border-radius:50%;filter:blur(120px);
  background:rgba(34,211,238,.22);top:-180px;right:-120px;pointer-events:none
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1 span{color:var(--primary)}
.hero-sub{margin-top:20px;font-size:17px;max-width:640px;color:var(--text-2)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-trust{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.trust-chip{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);
  padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03)
}
.trust-chip b{color:var(--text);font-weight:600}
.dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(34,211,238,.8)}
.hero-card{
  position:relative;border-radius:var(--r-panel);overflow:hidden;padding:28px;
  background:var(--glass);border:var(--glass-border);box-shadow:var(--sh-2);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%)
}
.hero-card img{width:100%;height:210px;object-fit:cover;border:1px solid var(--line);border-radius:14px}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:24px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px}
.stat b{display:block;font-size:24px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.stat span{display:block;margin-top:6px;font-size:12px;color:var(--text-2)}

/* filter tabs */
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px}
.tab{
  font-size:14px;padding:9px 18px;border-radius:999px;cursor:pointer;
  background:var(--surface);border:1px solid var(--line);color:var(--text-2);
  transition:background-color var(--t),color var(--t),border-color var(--t),transform var(--t)
}
.tab:hover{color:var(--text);border-color:rgba(34,211,238,.4)}
.tab[aria-selected="true"]{
  background:linear-gradient(135deg,#22D3EE,#0E9FB4);color:#04121A;border-color:transparent;
  font-weight:600;box-shadow:var(--sh-glow)
}
.tab:active{transform:translateY(1px)}

/* masonry */
.masonry{column-count:3;column-gap:24px}
.masonry .m-card{
  break-inside:avoid;-webkit-column-break-inside:avoid;page-break-inside:avoid;
  display:inline-block;width:100%;margin-bottom:24px;vertical-align:top
}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t)
}
.card:hover{transform:translateY(-3px);border-color:rgba(34,211,238,.4);box-shadow:var(--sh-2)}
.card:hover img{transform:scale(1.03)}
.card-img{overflow:hidden;border-radius:0}
.card-img img{width:100%;height:180px;object-fit:cover;border-radius:0;transition:transform var(--t)}
.card-body{padding:28px}
.card-body h3{margin:14px 0 10px;font-size:19px}
.card-body p{font-size:14px;line-height:1.7}
.card-meta{display:flex;align-items:center;justify-content:space-between;margin-top:18px;font-size:13px;color:var(--text-2)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chip{font-size:12px;padding:4px 10px;border-radius:999px;background:rgba(255,255,255,.05);color:var(--text-2);border:1px solid var(--line)}
.mini-list{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.mini-list li{font-size:14px;color:var(--text-2);padding-left:16px;position:relative}
.mini-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--primary)}
.is-hidden{display:none !important}
.empty-state{
  display:none;text-align:center;padding:48px 28px;border-radius:var(--r-panel);
  background:var(--glass);border:var(--glass-border)
}
.empty-state.show{display:block}
.empty-state .ico{
  width:32px;height:32px;margin:0 auto 16px;border-radius:10px;
  border:1.5px solid var(--primary);position:relative
}
.empty-state .ico::after{content:"";position:absolute;width:10px;height:10px;right:-5px;bottom:-5px;border-radius:3px;background:var(--primary-soft);border:1.5px solid var(--primary)}
.empty-state p{margin-bottom:20px;font-size:15px}

/* split section */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split.rev .split-media{order:2}
.split-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1)}
.split-media img{width:100%;height:340px;object-fit:cover;border-radius:0}
.check-list{display:flex;flex-direction:column;gap:14px;margin:24px 0 26px}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2)}
.check-list li b{color:var(--text);font-weight:600}
.mark{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:1.5px solid rgba(34,211,238,.6);
  display:inline-flex;align-items:center;justify-content:center;color:var(--primary);font-size:12px;font-weight:700;margin-top:3px
}
.note-box{
  background:var(--surface-2);border-left:3px solid var(--primary);border-radius:10px;padding:18px 20px;
  font-size:14px;color:var(--text-2)
}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:12px}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t)
}
.step:hover{transform:translateY(-3px);border-color:rgba(34,211,238,.4);box-shadow:var(--sh-2)}
.step-no{
  width:38px;height:38px;border-radius:50%;border:1.5px solid var(--primary);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;box-shadow:0 0 18px -6px rgba(34,211,238,.8)
}
.step h3{margin:18px 0 10px;font-size:19px}
.step p{font-size:14px;line-height:1.75}

/* faq */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  border-radius:var(--r-card);margin-bottom:14px;overflow:hidden;
  background:var(--glass);border:var(--glass-border);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%)
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;cursor:pointer;text-align:left;
  padding:18px 24px;min-height:60px;font-size:18px;font-weight:600;color:var(--text)
}
.faq-q .sign{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;border:1px solid rgba(34,211,238,.5);
  color:var(--primary);display:inline-flex;align-items:center;justify-content:center;font-size:15px;
  transition:transform var(--t)
}
.faq-item.open .faq-q .sign{transform:rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms cubic-bezier(.2,.7,.3,1)}
.faq-a-inner{padding:0 24px 22px;border-top:1px solid var(--line);margin-top:0;padding-top:18px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* cta */
.cta-section{position:relative;overflow:hidden;background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-section::after{
  content:"";position:absolute;width:480px;height:480px;border-radius:50%;filter:blur(120px);
  background:rgba(34,211,238,.16);bottom:-220px;left:-140px;pointer-events:none
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta-grid h2{max-width:460px}
.cta-list{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.cta-list li{font-size:15px;color:var(--text-2);display:flex;gap:10px;align-items:flex-start}
.form-card{
  background:var(--glass);border:var(--glass-border);border-radius:var(--r-panel);padding:28px;
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-2)
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field textarea{
  width:100%;background:var(--surface);border:1px solid var(--line);border-radius:10px;
  padding:13px 14px;font-size:15px;color:var(--text);transition:border-color var(--t),box-shadow var(--t),background-color var(--t)
}
.field input::placeholder,.field textarea::placeholder{color:rgba(157,176,198,.6)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(34,211,238,.22)
}
.field textarea{min-height:110px;resize:vertical}
.form-tip{font-size:12px;color:var(--text-2);margin-top:12px}
.form-msg{display:none;margin-top:14px;font-size:14px;color:var(--success)}
.form-msg.show{display:block}

/* footer */
.site-footer{background:var(--bg);padding:72px 0 28px;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
.footer-col h4{font-size:16px;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:var(--text-2);transition:color var(--t)}
.footer-col a:hover{color:var(--primary)}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.75;max-width:340px}
.footer-contact p{font-size:14px;line-height:1.75}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--text-2)
}
.fb-links{display:flex;gap:20px;flex-wrap:wrap}
.fb-links a:hover{color:var(--primary)}

.reveal{opacity:0;transform:translateY(8px);transition:opacity 420ms ease,transform 420ms cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

@media (max-width:1200px){
  .container{padding:0 24px}
  .masonry{column-count:2}
  .hero-grid{gap:40px}
  h1{font-size:42px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-contact{grid-column:1 / -1}
}
@media (max-width:992px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .hero-grid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:32px}
  .split.rev .split-media{order:0}
  .split-media img{height:280px}
  .steps{grid-template-columns:1fr 1fr}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .section{padding:72px 0}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .section-sm{padding:48px 0}
  h1{font-size:32px}
  h2{font-size:26px}
  h3{font-size:20px}
  .masonry{column-count:1}
  .steps{grid-template-columns:1fr}
  .stat-row{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
  .hero{padding:52px 0 60px}
  .card-body{padding:20px}
  .step{padding:20px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .hero-actions .btn{width:100%}
  .stat-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}
@media print{
  .site-header,.drawer,.nav-toggle{display:none !important}
  body{background:#fff;color:#111}
  p,.card-body p{color:#333}
}

/* roulang page: category3 */
:root{
  --bg:#060B14;
  --bg-soft:#0A121F;
  --surface:#0E1726;
  --surface-2:#132135;
  --primary:#22D3EE;
  --primary-deep:#0E9FB4;
  --primary-soft:rgba(34,211,238,.12);
  --accent:#F0B24A;
  --text:#E8F0F8;
  --text-2:#9DB0C6;
  --line:rgba(140,178,214,.14);
  --success:#4ADE80;
  --danger:#F87171;
  --glass-bg:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  --glass-line:1px solid rgba(120,190,220,.16);
  --r-card:16px;
  --r-panel:20px;
  --r-btn:10px;
  --sh-1:0 2px 10px rgba(0,0,0,.35);
  --sh-2:0 14px 40px -18px rgba(0,0,0,.7);
  --glow:0 10px 30px -10px rgba(34,211,238,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:180ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(34,211,238,.32);color:#F4FBFF}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;box-shadow:0 0 0 4px rgba(34,211,238,.18)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-soft)}
::-webkit-scrollbar-thumb{background:rgba(34,211,238,.28);border-radius:999px;border:2px solid var(--bg-soft)}
::-webkit-scrollbar-thumb:hover{background:rgba(34,211,238,.45)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-head{max-width:780px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;line-height:1;letter-spacing:.08em;
  padding:6px 12px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);
  border:1px solid rgba(34,211,238,.22);
  margin-bottom:18px;
}
.section-head h2{font-size:32px;margin-bottom:16px}
.section-head p{color:var(--text-2);font-size:16px}
.lead{max-width:780px;color:var(--text-2)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 30px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform var(--t),box-shadow var(--t),background-color var(--t),border-color var(--t),color var(--t);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#22D3EE,#0E9FB4);
  color:#04121A;
  box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 16px 36px -12px rgba(34,211,238,.7)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-primary[disabled],.btn-primary.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.btn-ghost{
  background:transparent;color:var(--text);
  border:1px solid rgba(255,255,255,.18);
}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(34,211,238,.6);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 20px;font-size:14px}

/* 文字链 */
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;transition:color var(--t)}
.text-link .arrow{display:inline-block;transition:transform var(--t)}
.text-link:hover .arrow{transform:translateX(4px)}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;padding:4px 10px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);
  border:1px solid rgba(34,211,238,.2);
}
.badge-accent{background:rgba(240,178,74,.12);color:var(--accent);border-color:rgba(240,178,74,.26)}
.badge-state{background:rgba(74,222,128,.12);color:var(--success);border-color:rgba(74,222,128,.26)}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(6,11,20,.78);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background-color var(--t),border-color var(--t),box-shadow var(--t);
}
.site-header.is-scrolled{
  background:linear-gradient(180deg,rgba(10,18,31,.94),rgba(6,11,20,.88));
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  position:relative;width:28px;height:28px;border-radius:8px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:0 8px 20px -8px rgba(34,211,238,.8);
}
.brand-mark::after{content:"";position:absolute;inset:7px;border:1.5px solid rgba(4,18,26,.7);border-radius:3px}
.brand-text{font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--text)}
.brand-text em{font-style:normal;color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;font-size:15px;color:var(--text-2);
  padding:8px 12px;border-radius:10px;
  transition:color var(--t),background-color var(--t);
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;
  background:var(--primary);border-radius:2px;
  box-shadow:0 0 10px rgba(34,211,238,.85);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-cta{padding:11px 22px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--text);border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform var(--t),top var(--t),opacity var(--t);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
body.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}
.nav-scrim{
  position:fixed;inset:0;background:rgba(3,7,13,.62);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:110;
}
body.nav-open .nav-scrim{opacity:1;visibility:visible}
.nav-cta-mobile{display:none}

/* 面包屑 + 首屏 */
.page-hero{
  position:relative;
  padding:64px 0 72px;
  background-image:linear-gradient(180deg,rgba(6,11,20,.78),rgba(6,11,20,.94)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(140,178,214,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(140,178,214,.055) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;width:480px;height:480px;right:-120px;top:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.28),transparent 68%);
  filter:blur(120px);pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-2);margin-bottom:22px}
.breadcrumb a{transition:color var(--t)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:var(--primary)}
.page-hero h1{font-size:clamp(30px,4.2vw,48px);line-height:1.2;margin-bottom:18px;max-width:820px}
.page-hero .sub{color:var(--text-2);font-size:17px;max-width:760px;margin-bottom:28px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-metrics{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;
  margin-top:44px;
}
.metric{
  background:var(--glass-bg);
  border:var(--glass-line);
  border-radius:var(--r-panel);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  padding:22px 24px;
  box-shadow:var(--sh-1);
}
.metric .num{font-size:28px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.2}
.metric .lbl{font-size:14px;color:var(--text-2);margin-top:6px}

/* 场景卡 */
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.card:hover{transform:translateY(-3px);border-color:rgba(34,211,238,.4);box-shadow:var(--sh-2)}
.card h3{font-size:22px;margin:14px 0 10px}
.card p{color:var(--text-2);font-size:15px}
.card ul{margin-top:16px;display:grid;gap:10px}
.card ul li{position:relative;padding-left:18px;font-size:14px;color:var(--text-2)}
.card ul li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 8px rgba(34,211,238,.8);
}

/* 图文两栏 */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split.reverse{grid-template-columns:.95fr 1.05fr}
.figure{
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  background:var(--surface-2);box-shadow:var(--sh-2);
}
.figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;transition:transform 320ms var(--ease)}
.figure:hover img{transform:scale(1.03)}
.checklist{display:grid;gap:14px;margin-top:24px}
.checklist li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.checklist li .dot{
  flex:0 0 20px;width:20px;height:20px;margin-top:3px;border-radius:6px;
  background:var(--primary-soft);border:1px solid rgba(34,211,238,.34);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--primary);font-weight:700;
}

/* 时间轴 */
.timeline{position:relative;margin-top:44px}
.timeline::before{
  content:"";position:absolute;left:15px;top:10px;bottom:10px;width:2px;
  background:linear-gradient(180deg,rgba(34,211,238,.6),rgba(34,211,238,.08));
}
.tl-item{position:relative;padding-left:58px;padding-bottom:28px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:6px;top:26px;width:20px;height:20px;border-radius:50%;
  background:var(--surface);border:2px solid var(--primary);
  box-shadow:0 0 18px rgba(34,211,238,.6);
}
.tl-dot::after{content:"";position:absolute;inset:5px;border-radius:50%;background:var(--primary)}
.tl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 28px;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.tl-card:hover{transform:translateY(-3px);border-color:rgba(34,211,238,.4);box-shadow:var(--sh-2)}
.tl-top{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:12px}
.tl-num{
  font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--accent);
  font-variant-numeric:tabular-nums;
  border:1px solid rgba(240,178,74,.3);border-radius:999px;padding:3px 10px;
  background:rgba(240,178,74,.1);
}
.tl-card h3{font-size:20px}
.tl-card p{color:var(--text-2);font-size:15px}
.tl-note{
  margin-top:14px;padding-left:14px;border-left:2px solid rgba(34,211,238,.5);
  font-size:14px;color:var(--text-2);
}

/* 场景适配清单 */
.plan-card{display:flex;flex-direction:column;gap:14px}
.plan-top{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.plan-time{font-size:24px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1}
.plan-time small{font-size:13px;color:var(--text-2);font-weight:500;margin-left:4px}
.plan-list{display:grid;gap:10px;margin-top:4px}
.plan-list li{font-size:14px;color:var(--text-2);padding-left:16px;position:relative}
.plan-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:1px;background:var(--primary)}

/* FAQ */
.faq-list{display:grid;gap:14px;margin-top:40px}
.faq-item{
  background:var(--glass-bg);
  border:var(--glass-line);
  border-radius:var(--r-panel);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item:hover{border-color:rgba(34,211,238,.34)}
.faq-item.open{border-color:rgba(34,211,238,.44);box-shadow:var(--sh-1)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  width:100%;text-align:left;padding:20px 26px;min-height:60px;
  font-size:18px;font-weight:600;color:var(--text);
}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px;transition:transform var(--t)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform var(--t),opacity var(--t);
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.open .faq-icon{transform:rotate(90deg)}
.faq-item.open .faq-icon::after{opacity:0;transform:translate(-50%,-50%) scaleY(.2)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms var(--ease)}
.faq-a p{padding:18px 26px 24px;border-top:1px solid var(--line);color:var(--text-2);font-size:15px;line-height:1.8}
.faq-item.open .faq-a{max-height:420px}

/* CTA 与表单 */
.cta-panel{
  position:relative;
  background:linear-gradient(180deg,var(--bg-soft),var(--surface));
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  padding:56px;
  overflow:hidden;
}
.cta-panel::before{
  content:"";position:absolute;width:480px;height:480px;left:-160px;bottom:-260px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.22),transparent 68%);
  filter:blur(120px);pointer-events:none;
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.cta-copy h2{font-size:32px;margin-bottom:16px}
.cta-copy p{color:var(--text-2);font-size:16px;max-width:520px}
.cta-points{display:grid;gap:12px;margin-top:26px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.cta-points li span{color:var(--primary);font-weight:700}
.form-card{
  background:var(--glass-bg);
  border:var(--glass-line);
  border-radius:var(--r-panel);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  padding:32px;
  box-shadow:var(--sh-2);
}
.field{display:grid;gap:8px;margin-bottom:18px}
.field label{font-size:14px;color:var(--text-2)}
.field input,.field textarea{
  width:100%;padding:13px 16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  font-size:15px;color:var(--text);
  transition:border-color var(--t),box-shadow var(--t);
}
.field input::placeholder,.field textarea::placeholder{color:rgba(157,176,198,.6)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(34,211,238,.18);
}
.field textarea{min-height:120px;resize:vertical}
.form-card .btn{width:100%}
.form-note{margin-top:14px;font-size:14px;color:var(--text-2);min-height:22px}
.form-note.ok{color:var(--success)}

/* 页脚 */
.site-footer{
  margin-top:0;
  background:linear-gradient(180deg,rgba(10,18,31,.7),rgba(6,11,20,.98));
  border-top:1px solid var(--line);
  padding:72px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-col h4{font-size:16px;margin-bottom:18px;color:var(--text)}
.footer-col ul{display:grid;gap:12px}
.footer-col ul a{color:var(--text-2);font-size:14px;transition:color var(--t)}
.footer-col ul a:hover{color:var(--primary)}
.footer-brand p{color:var(--text-2);font-size:14px;margin-top:16px;max-width:340px}
.footer-contact p{color:var(--text-2);font-size:14px;max-width:320px}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-2);
}
.fb-links{display:flex;flex-wrap:wrap;gap:18px}
.fb-links a{transition:color var(--t)}
.fb-links a:hover{color:var(--primary)}

/* 入场 */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

@media (max-width:1200px){
  .container{padding:0 24px}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:992px){
  .section{padding:72px 0}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .nav-links{
    position:fixed;top:0;right:0;z-index:120;
    width:min(360px,86vw);height:100vh;
    flex-direction:column;align-items:stretch;gap:20px;
    padding:96px 28px 32px;
    background:linear-gradient(180deg,rgba(10,18,31,.98),rgba(6,11,20,.99));
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform var(--t);
    overflow-y:auto;
  }
  body.nav-open .nav-links{transform:none}
  .nav-links a{font-size:18px;padding:6px 0;text-align:left}
  .nav-links a:hover{background:none;color:var(--primary)}
  .nav-links a.active::after{left:0;right:auto;width:28px;bottom:0}
  .nav-cta-mobile{
    display:inline-flex;margin-top:auto;justify-content:center;
    padding:15px 24px;border-radius:var(--r-btn);
    background:linear-gradient(135deg,#22D3EE,#0E9FB4);color:#04121A;font-weight:600;
    box-shadow:var(--glow);
  }
  .nav-links a.nav-cta-mobile{font-size:16px;color:#04121A}
  .split,.split.reverse{grid-template-columns:1fr;gap:36px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .cta-panel{padding:40px}
  .hero-metrics{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .page-hero{padding:44px 0 56px}
  .section-head h2{font-size:26px}
  .page-hero h1{font-size:30px}
  .page-hero .sub{font-size:16px}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}
  .hero-metrics{grid-template-columns:1fr;gap:14px}
  .card{padding:22px}
  .tl-item{padding-left:46px}
  .tl-card{padding:22px}
  .faq-q{font-size:16px;padding:18px 20px}
  .faq-a p{padding:16px 20px 22px}
  .cta-panel{padding:28px}
  .form-card{padding:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
  .container{padding:0 18px}
  .card{padding:20px}
  .btn{width:100%}
  .hero-actions{flex-direction:column}
  .tl-card{padding:20px}
  .plan-top{flex-direction:column;align-items:flex-start;gap:6px}
}

/* roulang page: category4 */
:root{
  --bg:#060B14;--bg-soft:#0A121F;--surface:#0E1726;--surface-2:#132135;
  --primary:#22D3EE;--primary-deep:#0E9FB4;--primary-soft:rgba(34,211,238,.12);
  --accent:#F0B24A;--success:#4ADE80;--danger:#F87171;
  --text:#E8F0F8;--text-2:#9DB0C6;--line:rgba(140,178,214,.14);
  --sh-1:0 2px 10px rgba(0,0,0,.35);
  --sh-2:0 14px 40px -18px rgba(0,0,0,.7);
  --glow:0 10px 30px -10px rgba(34,211,238,.55);
  --r-card:16px;--r-panel:20px;--r-btn:10px;
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul{padding:0;list-style:none;}
::selection{background:rgba(34,211,238,.3);color:#fff;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(34,211,238,.18);border-radius:6px;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-soft);}
::-webkit-scrollbar-thumb{background:#1D2C42;border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:#2A3E5C;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;line-height:1;
  padding:6px 12px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);
  border:1px solid rgba(34,211,238,.24);margin-bottom:18px;
}
.section-head h2{font-size:32px;line-height:1.3;font-weight:700;letter-spacing:-.01em;}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;max-width:740px;}
.lead{color:var(--text-2);}

/* ===== header / nav ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,11,20,.86);
  border-bottom:1px solid transparent;
  transition:background-color var(--t),border-color var(--t),box-shadow var(--t),backdrop-filter var(--t);
}
.site-header.is-scrolled{
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:rgba(120,190,220,.16);
  box-shadow:var(--sh-2);
}
.nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.brand-mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:var(--glow);position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;border-radius:3px;
  border:2px solid rgba(4,18,26,.85);
}
.brand-text em{font-style:normal;color:var(--primary);}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;display:inline-block;padding:8px 12px;border-radius:8px;
  font-size:15px;color:var(--text-2);
  transition:color var(--t),background-color var(--t);
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05);}
.nav-links a.active{color:var(--primary);background:transparent;}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--primary);border-radius:2px;
  box-shadow:0 0 10px rgba(34,211,238,.7);
}
.nav-cta{margin-left:10px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  background:var(--surface);border:1px solid var(--line);cursor:pointer;
  align-items:center;justify-content:center;font-size:17px;color:var(--text);
  transition:border-color var(--t),color var(--t);
}
.nav-toggle:hover{border-color:rgba(34,211,238,.5);color:var(--primary);}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 30px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;border:1px solid transparent;
  transition:transform var(--t),box-shadow var(--t),background-color var(--t),border-color var(--t),color var(--t),opacity var(--t);
}
.btn-primary{background:linear-gradient(135deg,#22D3EE,#0E9FB4);color:#04121A;box-shadow:var(--glow);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 14px 36px -12px rgba(34,211,238,.7);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 18px -8px rgba(34,211,238,.6);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text);}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(34,211,238,.6);color:var(--primary);}
.btn:disabled,.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:14px;font-weight:600;
  transition:color var(--t);
}
.text-link i{transition:transform var(--t);}
.text-link:hover i{transform:translateX(4px);}

/* ===== breadcrumb ===== */
.breadcrumb{
  padding:22px 0 0;font-size:13px;color:var(--text-2);
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.breadcrumb a{color:var(--text-2);transition:color var(--t);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:var(--primary);}

/* ===== hero ===== */
.hero{position:relative;overflow:hidden;padding:56px 0 96px;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(140,178,214,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(140,178,214,.055) 1px,transparent 1px);
  background-size:64px 64px;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;width:480px;height:480px;border-radius:50%;
  right:-120px;top:-160px;filter:blur(120px);
  background:radial-gradient(circle,rgba(34,211,238,.28),transparent 68%);
  pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;}
.hero h1{font-size:48px;line-height:1.2;font-weight:700;letter-spacing:-.01em;}
.hero h1 span{color:var(--primary);}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text-2);max-width:640px;}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-tags{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;}
.trust{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);
  padding:7px 14px;border-radius:999px;background:var(--surface);border:1px solid var(--line);
}
.trust i{color:var(--primary);font-size:12px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;height:300px;border-radius:var(--r-panel);
  border:1px solid var(--line);box-shadow:var(--sh-2);
}
.glass-card{
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  border:1px solid rgba(120,190,220,.16);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-radius:var(--r-panel);
  padding:26px;
}
@supports not (backdrop-filter:blur(14px)){
  .glass-card,.site-header.is-scrolled{background:var(--surface);}
}
.hero-stats{margin-top:-58px;margin-left:22px;margin-right:22px;position:relative;z-index:3;}
.hero-stats .stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;text-align:center;}
.stat-num{
  font-size:26px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.stat-label{font-size:12.5px;color:var(--text-2);margin-top:4px;}

/* ===== cards ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.card:hover{border-color:rgba(34,211,238,.4);box-shadow:var(--sh-2);transform:translateY(-3px);}
.card h3{font-size:22px;line-height:1.35;font-weight:700;}
.card p{margin-top:12px;color:var(--text-2);font-size:15px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;padding:4px 10px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);border:1px solid rgba(34,211,238,.2);
}
.badge-accent{background:rgba(240,178,74,.14);color:var(--accent);border-color:rgba(240,178,74,.26);}
.badge-ok{background:rgba(74,222,128,.13);color:var(--success);border-color:rgba(74,222,128,.26);}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;}

/* ===== plan cards ===== */
.plan-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.plan{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-panel);
  padding:30px;display:flex;flex-direction:column;gap:18px;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.plan:hover{transform:translateY(-3px);border-color:rgba(34,211,238,.35);}
.plan.featured{
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  border:1px solid rgba(34,211,238,.45);
  box-shadow:var(--glow);transform:translateY(-12px);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.plan.featured:hover{transform:translateY(-14px);}
.plan-name{font-size:18px;font-weight:700;}
.plan-price{font-size:34px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.plan-price small{font-size:14px;font-weight:500;color:var(--text-2);margin-left:6px;}
.plan ul{display:flex;flex-direction:column;gap:10px;}
.plan li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.65;}
.plan li i{color:var(--primary);margin-top:5px;font-size:12px;}
.plan .btn{margin-top:auto;}

/* ===== table ===== */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--surface);
}
.table-scroll{overflow-x:auto;}
table.compare{width:100%;border-collapse:collapse;min-width:640px;}
table.compare caption{
  caption-side:top;text-align:left;padding:20px 24px 0;color:var(--text-2);font-size:14px;
}
table.compare th,table.compare td{
  padding:15px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line);
  vertical-align:middle;
}
table.compare thead th{
  background:linear-gradient(135deg,rgba(34,211,238,.9),rgba(14,159,180,.9));
  color:#04121A;font-weight:700;font-size:14.5px;letter-spacing:.01em;border-bottom:none;
}
table.compare tbody tr:nth-child(odd){background:rgba(255,255,255,.018);}
table.compare tbody tr:hover{background:rgba(34,211,238,.06);}
table.compare td:first-child{color:var(--text);font-weight:600;}
table.compare td{color:var(--text-2);font-variant-numeric:tabular-nums;}
table.compare .yes{color:var(--success);font-weight:600;}
table.compare .no{color:var(--text-2);opacity:.7;}
.table-note{padding:16px 24px 22px;font-size:13px;color:var(--text-2);border-top:1px solid var(--line);}

/* ===== feature rows ===== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.split img{width:100%;height:320px;border-radius:var(--r-card);border:1px solid var(--line);}
.split h3{font-size:26px;line-height:1.35;font-weight:700;}
.split p{margin-top:14px;color:var(--text-2);}
.check-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);}
.check-list li i{color:var(--primary);margin-top:6px;font-size:12px;}

/* ===== steps ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:26px;position:relative;}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;border:1px solid rgba(34,211,238,.6);
  color:var(--primary);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.step h4{font-size:18px;font-weight:600;}
.step p{margin-top:10px;color:var(--text-2);font-size:14.5px;}

/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:860px;margin:0 auto;}
.faq-item{
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  border:1px solid rgba(120,190,220,.16);border-radius:var(--r-card);overflow:hidden;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:border-color var(--t);
}
.faq-item:hover{border-color:rgba(34,211,238,.35);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 24px;min-height:60px;background:transparent;border:0;cursor:pointer;
  text-align:left;font-size:18px;font-weight:600;line-height:1.5;transition:color var(--t);
}
.faq-q:hover{color:var(--primary);}
.faq-q .faq-ico{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid rgba(34,211,238,.45);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform var(--t),background-color var(--t);
}
.faq-item.open .faq-ico{transform:rotate(90deg);background:var(--primary-soft);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height var(--t);
  border-top:1px solid transparent;
}
.faq-item.open .faq-a{border-top-color:var(--line);}
.faq-a p{padding:16px 24px 20px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ===== CTA / form ===== */
.cta{
  position:relative;overflow:hidden;border-radius:var(--r-panel);
  border:1px solid rgba(120,190,220,.16);
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018)),var(--bg-soft);
  padding:44px;
}
.cta::after{
  content:"";position:absolute;width:480px;height:480px;border-radius:50%;
  right:-180px;bottom:-240px;filter:blur(120px);
  background:radial-gradient(circle,rgba(34,211,238,.22),transparent 68%);pointer-events:none;
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;}
.cta h2{font-size:30px;line-height:1.3;font-weight:700;}
.cta p{margin-top:16px;color:var(--text-2);}
.cta-points{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;gap:12px;font-size:14.5px;color:var(--text-2);}
.cta-points li i{color:var(--primary);margin-top:6px;font-size:12px;}
.form{display:grid;gap:16px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13.5px;color:var(--text-2);}
.field input,.field textarea{
  width:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-btn);
  padding:13px 15px;font-size:15px;color:var(--text);
  transition:border-color var(--t),box-shadow var(--t),background-color var(--t);
}
.field input::placeholder,.field textarea::placeholder{color:rgba(157,176,198,.6);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(34,211,238,.2);
}
.field textarea{min-height:112px;resize:vertical;}
.form-tip{font-size:13px;color:var(--text-2);}
.form-tip a{color:var(--primary);}

/* ===== footer ===== */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:var(--text-2);transition:color var(--t);}
.footer-col a:hover{color:var(--primary);}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:340px;}
.footer-contact p{font-size:14px;color:var(--text-2);max-width:300px;}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-2);
}
.footer-bottom .fb-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom a{transition:color var(--t);}
.footer-bottom a:hover{color:var(--primary);}

/* ===== drawer ===== */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,7,13,.62);opacity:0;visibility:hidden;
  transition:opacity var(--t),visibility var(--t);z-index:80;
}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(340px,86vw);z-index:90;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02)),var(--surface);
  border-left:1px solid rgba(120,190,220,.16);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transform:translateX(102%);transition:transform var(--t);
  display:flex;flex-direction:column;padding:22px;
}
.drawer.show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;background:transparent;border:1px solid var(--line);
  color:var(--text);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
  transition:border-color var(--t),color var(--t);
}
.drawer-close:hover{border-color:rgba(34,211,238,.5);color:var(--primary);}
.drawer-nav{display:flex;flex-direction:column;gap:20px;}
.drawer-nav a{font-size:18px;color:var(--text-2);transition:color var(--t);}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--primary);}
.drawer-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--line);}

/* ===== reveal ===== */
.reveal{opacity:0;transform:translateY(8px);transition:opacity 420ms cubic-bezier(.2,.7,.3,1),transform 420ms cubic-bezier(.2,.7,.3,1);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* ===== responsive ===== */
@media (max-width:1200px){
  .container{padding:0 24px;}
  .hero h1{font-size:42px;}
  .grid-3,.steps,.plan-list{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-contact{grid-column:1 / -1;}
}
@media (max-width:992px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero{padding:34px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero h1{font-size:36px;}
  .hero-media img{height:240px;}
  .hero-stats{margin:-40px 0 0;}
  .section{padding:72px 0;}
  .split{grid-template-columns:1fr;gap:30px;}
  .split img{height:260px;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .cta{padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:26px;}
  .hero h1{font-size:31px;}
  .hero-sub{font-size:15.5px;}
  .grid-3,.grid-2,.steps,.plan-list{grid-template-columns:1fr;}
  .plan.featured{transform:none;}
  .plan.featured:hover{transform:translateY(-3px);}
  .hero-stats .stat-row{grid-template-columns:repeat(3,1fr);gap:10px;}
  .stat-num{font-size:21px;}
  .card{padding:20px;}
  .faq-q{font-size:16.5px;padding:16px 20px;}
  .faq-a p{padding:14px 20px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:480px){
  .hero-actions .btn{width:100%;}
  .btn{padding:13px 22px;}
  .hero-media img{height:200px;}
  .table-note{font-size:12.5px;}
  .hero-stats .stat-row{grid-template-columns:1fr;gap:14px;text-align:left;}
}

/* roulang page: category5 */
:root{
  --bg:#060B14;
  --bg-soft:#0A121F;
  --surface:#0E1726;
  --surface-2:#132135;
  --primary:#22D3EE;
  --primary-deep:#0E9FB4;
  --primary-soft:rgba(34,211,238,.12);
  --accent:#F0B24A;
  --text:#E8F0F8;
  --text-2:#9DB0C6;
  --line:rgba(140,178,214,.14);
  --success:#4ADE80;
  --danger:#F87171;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:10px;
  --r-badge:999px;
  --r-input:10px;
  --sh-1:0 2px 10px rgba(0,0,0,.35);
  --sh-2:0 14px 40px -18px rgba(0,0,0,.7);
  --glow:0 10px 30px -10px rgba(34,211,238,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0;list-style:none}
::selection{background:rgba(34,211,238,.3);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-soft)}
::-webkit-scrollbar-thumb{background:rgba(34,211,238,.28);border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:rgba(34,211,238,.45)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(34,211,238,.18)}
.num{font-variant-numeric:tabular-nums;font-weight:700}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--surface);color:var(--text);padding:12px 18px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  height:72px;
  display:flex;
  align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.site-header.scrolled{
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{
  width:26px;height:26px;border-radius:8px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:var(--glow);
  position:relative;
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;
  border:2px solid #04121A;border-radius:3px;
}
.brand-text em{font-style:normal;color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--text-2);
  border-radius:8px;
  transition:color 180ms var(--ease),background-color 180ms var(--ease);
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--primary);border-radius:2px;
  box-shadow:0 0 12px rgba(34,211,238,.85);
}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;justify-content:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  cursor:pointer;
  transition:border-color 180ms var(--ease),background-color 180ms var(--ease);
}
.nav-toggle:hover{border-color:var(--primary)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-mask{
  position:fixed;inset:0;z-index:85;
  background:rgba(4,8,14,.62);
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;
  transition:opacity 220ms var(--ease),visibility 220ms var(--ease);
}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ---------- 按钮 / 徽章 / 文字链 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 30px;
  font-size:15px;font-weight:600;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background-color 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease),filter 180ms var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#22D3EE,#0E9FB4);
  color:#04121A;
  box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 14px 34px -10px rgba(34,211,238,.7)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--glow)}
.btn-primary:disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;filter:none}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--primary);color:var(--primary)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:14px;font-weight:600;
  transition:color 180ms var(--ease);
}
.link-arrow span{transition:transform 180ms var(--ease)}
.link-arrow:hover span{transform:translateX(4px)}
.badge{
  display:inline-block;
  font-size:12px;line-height:1;
  padding:5px 11px;
  border-radius:var(--r-badge);
  background:var(--primary-soft);
  color:var(--primary);
  border:1px solid rgba(34,211,238,.24);
  white-space:nowrap;
}
.badge-accent{background:rgba(240,178,74,.12);color:var(--accent);border-color:rgba(240,178,74,.3)}
.badge-muted{background:rgba(140,178,214,.1);color:var(--text-2);border-color:var(--line)}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{padding-top:108px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.breadcrumb a{color:var(--text-2);transition:color 180ms var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.55}
.breadcrumb .current{color:var(--primary)}

/* ---------- Hero ---------- */
.page-hero{position:relative;padding:44px 0 96px;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(140,178,214,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(140,178,214,.055) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 52% 26%,#000 0%,transparent 74%);
  mask-image:radial-gradient(circle at 52% 26%,#000 0%,transparent 74%);
}
.hero-glow{
  position:absolute;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.2),transparent 70%);
  filter:blur(120px);
  top:-150px;right:-90px;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-copy h1{
  font-size:48px;line-height:1.2;font-weight:700;letter-spacing:-.01em;
  margin:18px 0 18px;
}
.hero-sub{font-size:18px;color:var(--text-2);max-width:620px}
.hero-desc{margin-top:18px;font-size:16px;color:var(--text-2);max-width:660px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-points{display:grid;gap:10px;margin-top:30px}
.hero-points li{position:relative;padding-left:20px;font-size:15px;color:var(--text-2)}
.hero-points li::before{
  content:"";position:absolute;left:0;top:11px;
  width:8px;height:8px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(34,211,238,.8);
}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/12;object-fit:cover;
  border-radius:var(--r-panel);
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
}
.hero-stat-card{
  position:absolute;right:18px;bottom:18px;
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
  padding:18px 20px;
  border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  border:1px solid rgba(120,190,220,.16);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-2);
}
.hero-stat-card .stat{min-width:76px}
.hero-stat-card .stat b{display:block;font-size:22px;line-height:1.2;color:var(--accent);font-variant-numeric:tabular-nums}
.hero-stat-card .stat span{display:block;font-size:12px;color:var(--text-2);line-height:1.5;margin-top:4px}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:40px}
.section-head h2{font-size:32px;line-height:1.3;font-weight:700;margin:14px 0 14px}
.section-head p{color:var(--text-2)}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ---------- 卡片 ---------- */
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.card:hover{transform:translateY(-3px);border-color:rgba(34,211,238,.4);box-shadow:var(--sh-2)}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}

.scene-card{display:flex;flex-direction:column;gap:14px}
.scene-card .scene-top{display:flex;align-items:center;gap:10px}
.scene-no{
  font-size:12px;line-height:1;padding:5px 10px;border-radius:var(--r-badge);
  border:1px solid rgba(34,211,238,.3);color:var(--primary);
  font-variant-numeric:tabular-nums;letter-spacing:.04em;
}
.scene-card h3{font-size:22px;line-height:1.35;font-weight:700}
.scene-card p{font-size:15px;color:var(--text-2)}
.card-list{display:grid;gap:8px;margin-top:2px}
.card-list li{position:relative;padding-left:18px;font-size:14px;color:var(--text-2);line-height:1.7}
.card-list li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;
  background:var(--primary);opacity:.85;
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:48px;align-items:start}
.faq-aside{position:sticky;top:100px}
.faq-aside img{
  width:100%;aspect-ratio:4/5;object-fit:cover;
  border-radius:var(--r-panel);border:1px solid var(--line);box-shadow:var(--sh-2);
}
.faq-aside p{margin-top:18px;font-size:14px;color:var(--text-2)}
.faq-item{
  margin-bottom:12px;
  border-radius:14px;
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  border:1px solid rgba(120,190,220,.16);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  overflow:hidden;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.faq-item:hover{border-color:rgba(34,211,238,.34)}
.faq-item.open{border-color:rgba(34,211,238,.42);box-shadow:var(--sh-1)}
.faq-q{
  width:100%;
  min-height:62px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 22px;
  background:transparent;border:0;
  text-align:left;
  font-size:18px;font-weight:600;line-height:1.5;
  color:var(--text);
  cursor:pointer;
}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--primary);
  transition:transform 180ms var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms var(--ease)}
.faq-item.open .faq-a{max-height:440px}
.faq-a-inner{
  padding:18px 22px 22px;
  border-top:1px solid var(--line);
  font-size:15px;line-height:1.8;color:var(--text-2);
}

/* ---------- 响应说明卡 ---------- */
.info-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease)}
.info-card:hover{transform:translateY(-3px);border-color:rgba(34,211,238,.4);box-shadow:var(--sh-2)}
.info-card h3{font-size:22px;line-height:1.35;margin:14px 0 10px}
.info-card p{font-size:15px;color:var(--text-2)}
.info-card .metric{
  display:flex;align-items:baseline;gap:8px;
  margin-top:18px;padding-top:18px;border-top:1px solid var(--line);
}
.info-card .metric b{font-size:24px;color:var(--accent);font-variant-numeric:tabular-nums}
.info-card .metric span{font-size:13px;color:var(--text-2)}

/* ---------- CTA + 表单 ---------- */
.cta-panel{
  display:grid;grid-template-columns:.92fr 1.08fr;gap:48px;
  padding:48px;
  border-radius:var(--r-panel);
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  border:1px solid rgba(120,190,220,.16);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-2);
  position:relative;
  overflow:hidden;
}
.cta-panel::after{
  content:"";position:absolute;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.18),transparent 70%);
  filter:blur(120px);
  bottom:-260px;left:-160px;pointer-events:none;
}
.cta-copy{position:relative;z-index:1}
.cta-copy h2{font-size:32px;line-height:1.3;margin:14px 0 14px}
.cta-copy p{color:var(--text-2);font-size:15px}
.cta-list{display:grid;gap:10px;margin-top:24px}
.cta-list li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2)}
.cta-list li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 10px rgba(34,211,238,.75);
}
.form-card{position:relative;z-index:1;display:grid;gap:16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:28px}
.field{display:grid;gap:8px}
.field label{font-size:14px;color:var(--text-2)}
.field input,.field textarea{
  width:100%;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  padding:13px 15px;
  font-size:15px;
  color:var(--text);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),background-color 180ms var(--ease);
}
.field textarea{min-height:112px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(157,176,198,.6)}
.field input:focus,.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  background:var(--surface);
  box-shadow:0 0 0 3px rgba(34,211,238,.18);
}
.form-note{font-size:13px;color:var(--text-2);line-height:1.7}
.form-success{
  margin-top:4px;
  font-size:14px;
  color:var(--success);
  background:rgba(74,222,128,.1);
  border:1px solid rgba(74,222,128,.28);
  border-radius:var(--r-input);
  padding:12px 14px;
}

/* ---------- 空态 ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  text-align:center;
  padding:48px 24px;
  border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  border:1px solid rgba(120,190,220,.16);
}
.empty-state p{font-size:15px;color:var(--text-2);max-width:520px}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-soft);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.35fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-col h4{font-size:16px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col li{font-size:14px}
.footer-col a{color:var(--text-2);transition:color 180ms var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-brand p{margin-top:18px;font-size:14px;color:var(--text-2);max-width:420px}
.footer-contact p{font-size:14px;color:var(--text-2);max-width:420px}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding:22px 0 28px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.footer-bottom .fb-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .fb-links a{color:var(--text-2);transition:color 180ms var(--ease)}
.footer-bottom .fb-links a:hover{color:var(--primary)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity 420ms var(--ease),transform 420ms var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .container{padding:0 28px}
  .hero-grid{gap:40px}
  .hero-copy h1{font-size:44px}
  .faq-layout{gap:36px}
}
@media (max-width:992px){
  .container{padding:0 24px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-copy h1{font-size:38px;margin-top:14px}
  .hero-media img{aspect-ratio:16/9}
  .hero-stat-card{position:static;margin-top:16px;box-shadow:var(--sh-1)}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-aside{position:static}
  .faq-aside img{aspect-ratio:16/9}
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
  .site-header .header-actions .btn{display:none}
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(88vw,380px);
    flex-direction:column;
    align-items:stretch;
    gap:20px;
    padding:100px 28px 40px;
    background:linear-gradient(160deg,rgba(14,23,38,.96),rgba(6,11,20,.98));
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    backdrop-filter:blur(14px) saturate(140%);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform 260ms var(--ease);
    z-index:90;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:none}
  .nav-links a{font-size:18px;padding:6px 0;color:var(--text)}
  .nav-links a.active::after{left:0;right:auto;width:28px;bottom:-4px}
  .page-hero{padding:32px 0 72px}
  .breadcrumb-bar{padding-top:96px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .section-head h2{font-size:26px}
  .hero-copy h1{font-size:31px;line-height:1.25}
  .hero-sub{font-size:16px}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .cta-copy h2{font-size:26px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .card,.info-card,.form-card{padding:20px}
  .faq-q{font-size:16px;padding:12px 18px}
  .faq-a-inner{padding:16px 18px 20px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .hero-copy h1{font-size:28px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .cta-panel{padding:24px}
  .hero-stat-card{grid-template-columns:1fr;gap:12px}
  .brand{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}