/* roulang page: index */
:root{
  --bg-900:#060A14;
  --bg-800:#0A111F;
  --bg-700:#0F1A2E;
  --primary:#22E0C8;
  --primary-600:#12B7A4;
  --primary-soft:rgba(34,224,200,.14);
  --accent:#FFAE4D;
  --accent-soft:rgba(255,174,77,.14);
  --violet:#6C5CE7;
  --text-1:#EAF2FF;
  --text-2:#A8B6CE;
  --text-3:#6E7C96;
  --glass-bg:rgba(255,255,255,.045);
  --glass-stroke:rgba(255,255,255,.10);
  --glass-stroke-hi:rgba(34,224,200,.38);
  --line:rgba(255,255,255,.08);
  --success:#3ED598;
  --warn:#FFC24D;
  --danger:#FF6B6B;
  --btn-text:#04140F;
  --radius-card:16px;
  --radius-block:20px;
  --radius-btn:999px;
  --radius-input:10px;
  --shadow-card:0 1px 0 rgba(255,255,255,.05) inset,0 24px 60px -28px rgba(0,0,0,.85);
  --shadow-raise:0 12px 34px -14px rgba(0,0,0,.9);
  --shadow-glow:0 8px 28px -6px rgba(34,224,200,.45),0 0 0 1px rgba(34,224,200,.35) inset;
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate","Barlow Semi Condensed",Inter,system-ui,sans-serif;
  --sec-y:104px;
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-bottom:0;
  background:var(--bg-900);
  color:var(--text-2);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
}
img{max-width:100%;display:block;border:0}
a{color:var(--text-1);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--primary)}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--text-1)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;position:relative;z-index:1}
.section{padding-top:var(--sec-y)}
.section-head{margin-bottom:36px}
.section-head.row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;color:var(--primary);
  background:var(--primary-soft);border:1px solid var(--glass-stroke);
  border-radius:999px;padding:0 14px;height:28px;margin-bottom:18px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary)}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.14;letter-spacing:-.01em}
h2{font-size:clamp(23px,2.4vw,34px);line-height:1.25}
h3{font-size:18px;line-height:1.4;font-weight:600}
.section-title{max-width:760px}
.section-desc{margin-top:14px;font-size:15px;color:var(--text-2);max-width:720px}
.lead{font-size:16px;color:var(--text-2)}
.hl{color:var(--text-1)}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(16px) saturate(120%);
  -webkit-backdrop-filter:blur(16px) saturate(120%);
  border-bottom:1px solid var(--line);
}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  border:1px solid var(--glass-stroke-hi);
  background:linear-gradient(150deg,rgba(34,224,200,.20),rgba(108,92,231,.16));
  box-shadow:0 0 18px rgba(34,224,200,.25) inset;
  color:var(--primary);
}
.brand-mark svg{width:20px;height:20px}
.brand-name{font-size:18px;font-weight:700;color:var(--text-1);letter-spacing:.01em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;
  padding:0 14px;font-size:15px;color:var(--text-2);border-radius:10px;
  transition:color var(--dur) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:6px;height:2px;width:0;
  transform:translateX(-50%);border-radius:2px;background:var(--primary);
  transition:width var(--dur) var(--ease);
}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{width:18px}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{width:18px}
.nav-cta{margin-left:12px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:var(--btn-text);box-shadow:var(--shadow-glow)}
.btn-primary:hover{background:#3CE6D2;transform:translateY(-1px);box-shadow:0 8px 34px -6px rgba(34,224,200,.55),0 0 0 1px rgba(34,224,200,.35) inset;color:var(--btn-text)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--text-1);border-color:var(--glass-stroke)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);
  font-size:14px;font-weight:600;min-height:44px;
}
.btn-text svg{width:16px;height:16px;transition:transform var(--dur) var(--ease)}
.btn-text:hover svg{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:13px;line-height:1;white-space:nowrap;
}
.badge-primary{background:var(--primary-soft);color:var(--primary)}
.badge-accent{background:var(--accent-soft);color:var(--accent)}
.badge-plain{border:1px solid var(--line);color:var(--text-3)}

/* 玻璃卡 */
.glass{
  position:relative;
  background:var(--glass-bg);
  border:1px solid var(--glass-stroke);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.glass::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;border-radius:var(--radius-card) var(--radius-card) 0 0;
  background:linear-gradient(90deg,rgba(34,224,200,.45),rgba(34,224,200,0) 60%);
  pointer-events:none;
}
.glass-hover:hover{
  transform:translateY(-2px);
  border-color:var(--glass-stroke-hi);
  box-shadow:var(--shadow-raise),0 0 24px rgba(34,224,200,.16);
}

/* Hero */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(6,10,20,.62) 0%,rgba(6,10,20,.92) 62%,#060A14 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.95;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;top:22%;height:1px;
  background:linear-gradient(90deg,rgba(34,224,200,0) 0%,rgba(34,224,200,.10) 45%,rgba(34,224,200,0) 100%);
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
  min-height:620px;padding:72px 0 88px;
}
.hero-copy h1{margin-bottom:18px}
.hero-sub{font-size:17px;line-height:1.75;color:var(--text-2);max-width:520px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:30px 0 26px}
.trust-bar{
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.trust-bar span{display:inline-flex;align-items:center;gap:6px}
.trust-bar span+span{padding-left:16px;border-left:1px solid var(--line)}
.trust-bar svg{width:15px;height:15px;color:var(--primary)}
.hero-media{position:relative}
.hero-frame{
  position:relative;border-radius:var(--radius-block);overflow:hidden;
  border:1px solid var(--glass-stroke);box-shadow:var(--shadow-card);
  aspect-ratio:16/11;background:var(--bg-700);
}
.hero-frame img{width:100%;height:100%;object-fit:cover}
.hero-float{
  position:absolute;right:-14px;bottom:-18px;width:min(258px,80%);
  padding:18px 20px;border-radius:var(--radius-card);
  background:rgba(6,10,20,.82);
  border:1px solid var(--glass-stroke-hi);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px) saturate(120%);
}
.hero-float .num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:30px;font-weight:700;color:var(--primary);line-height:1.1}
.hero-float .num small{font-size:14px;color:var(--accent);margin-left:4px;font-weight:600}
.hero-float .txt{font-size:13px;color:var(--text-3);margin-top:6px;line-height:1.6}

/* 痛点区 */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.pain-card{padding:28px 26px}
.pain-idx{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:14px;font-weight:700;color:var(--accent);letter-spacing:.08em;
}
.pain-card h3{margin:14px 0 10px;font-size:19px}
.pain-card p{font-size:14px;color:var(--text-2);margin:0;line-height:1.8}

/* 方案区 */
.solution-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.solution-main{padding:34px 32px;display:flex;flex-direction:column;gap:22px}
.solution-main .body{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:center}
.solution-num{font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.1em}
.solution-main h3{font-size:24px;margin:12px 0 12px}
.solution-main .bar{width:3px;height:44px;border-radius:3px;background:var(--primary);box-shadow:0 0 14px rgba(34,224,200,.5);margin-bottom:18px}
.solution-main p{font-size:14.5px;margin:0 0 16px}
.solution-thumb{border-radius:12px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;background:var(--bg-700)}
.solution-thumb img{width:100%;height:100%;object-fit:cover}
.solution-side{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.solution-card{padding:26px 24px;display:flex;flex-direction:column;gap:12px}
.solution-card.wide{grid-column:1 / -1}
.solution-ico{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--primary-soft);border:1px solid var(--glass-stroke);color:var(--primary);
}
.solution-ico svg{width:24px;height:24px}
.solution-card h3{font-size:17px}
.solution-card p{font-size:14px;margin:0;color:var(--text-2);line-height:1.8}
.solution-card .btn-text{margin-top:auto}

/* 数据条带 */
.stats{padding:8px;display:grid;grid-template-columns:repeat(4,1fr);border-radius:var(--radius-block)}
.stat{padding:30px 22px;text-align:left;position:relative}
.stat+.stat{border-left:1px solid var(--line)}
.stat-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:clamp(34px,5vw,56px);font-weight:700;color:var(--primary);line-height:1;
}
.stat-num .unit{font-size:.5em;color:var(--accent);margin-left:4px}
.stat-txt{margin-top:12px;font-size:13px;color:var(--text-3);line-height:1.7}

/* 资讯列表 */
.news-layout{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;align-items:start}
.news-feature{overflow:hidden;display:block}
.news-feature-link{display:block;height:100%}
.news-feature-media{aspect-ratio:16/9;border-radius:var(--radius-card) var(--radius-card) 0 0;overflow:hidden;background:var(--bg-700);border-bottom:1px solid var(--line)}
.news-feature-media img{width:100%;height:100%;object-fit:cover;object-position:center}
.news-feature-body{padding:24px 26px 28px}
.news-feature h3{font-size:21px;margin:14px 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-feature p{font-size:14.5px;line-height:1.8;color:var(--text-2);margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-side{display:flex;flex-direction:column;gap:16px}
.news-item{padding:18px 20px;display:grid;grid-template-columns:96px 1fr;gap:16px;align-items:center}
.news-item-media{aspect-ratio:16/11;border-radius:12px;overflow:hidden;background:var(--bg-700);border:1px solid var(--line)}
.news-item-media img{width:100%;height:100%;object-fit:cover}
.news-item h3{font-size:16px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--text-3)}
.news-meta .sep{width:3px;height:3px;border-radius:50%;background:var(--text-3)}
.empty-state{
  min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:36px;text-align:center;border-radius:var(--radius-card);
}
.empty-state svg{width:48px;height:48px;color:var(--primary);opacity:.5}
.empty-state p{font-size:14px;color:var(--text-3);margin:0}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:10px;max-width:920px}
.faq-item{
  border:1px solid var(--line);border-radius:12px;background:rgba(6,10,20,.55);
  overflow:hidden;transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.faq-item.is-open{border-color:var(--glass-stroke-hi);background:rgba(6,10,20,.72)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:transparent;border:0;padding:20px 22px;min-height:44px;
  font-size:16px;font-weight:600;color:var(--text-1);text-align:left;line-height:1.6;
  transition:color var(--dur) var(--ease);
}
.faq-item.is-open .faq-q{color:var(--primary)}
.faq-icon{flex:0 0 auto;width:20px;height:20px;color:var(--text-2);transition:transform 220ms var(--ease),color var(--dur) var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms var(--ease)}
.faq-a-inner{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* 联系 */
.contact-wrap{display:grid;grid-template-columns:5fr 7fr;gap:24px;align-items:start}
.contact-aside{padding:32px 30px}
.contact-aside h2{font-size:24px;margin-bottom:14px}
.contact-aside p{font-size:14.5px}
.contact-points{display:flex;flex-direction:column;gap:14px;margin-top:22px}
.contact-points li{display:flex;gap:12px;font-size:14px;color:var(--text-2);align-items:flex-start}
.contact-points svg{width:18px;height:18px;color:var(--primary);flex:0 0 auto;margin-top:4px}
.form-card{padding:30px 30px 26px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--text-2)}
.field input,.field select,.field textarea{
  width:100%;min-height:44px;padding:10px 14px;border-radius:var(--radius-input);
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-1);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft);
}
.field select option{background:var(--bg-800);color:var(--text-1)}
.form-note{margin-top:14px;font-size:12.5px;color:var(--text-3);line-height:1.7}
.form-msg{margin-top:12px;font-size:13.5px;color:var(--success);display:none}
.form-msg.show{display:block}

/* CTA 横条 */
.cta-band{padding:30px 34px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;border-radius:var(--radius-block)}
.cta-band h3{font-size:20px;margin-bottom:8px}
.cta-band p{margin:0;font-size:14px;color:var(--text-2)}

/* 页脚 */
.site-footer{
  margin-top:var(--sec-y);background:var(--bg-800);border-top:1px solid var(--line);
  padding:64px 0 0;position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-name{font-size:17px}
.footer-text{font-size:14px;color:var(--text-3);line-height:1.8;max-width:300px}
.footer-col h4{font-size:15px;font-weight:600;letter-spacing:.04em;color:var(--text-1);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-3);line-height:1.7}
.footer-col a{display:inline-flex;min-height:24px;align-items:center}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

/* 弹层 */
.modal{
  position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;
  padding:24px;background:rgba(3,7,14,.72);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.modal.is-open{display:flex}
.modal-panel{
  width:min(560px,92vw);max-height:90vh;overflow-y:auto;
  background:rgba(10,17,31,.92);
  border:1px solid var(--glass-stroke);border-radius:var(--radius-block);
  box-shadow:var(--shadow-card);padding:30px 30px 26px;position:relative;
}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:22px}
.modal-head h3{font-size:20px;margin-bottom:8px}
.modal-head p{font-size:13.5px;color:var(--text-3);margin:0}
.modal-close{
  flex:0 0 auto;width:44px;height:44px;display:grid;place-items:center;border-radius:12px;
  background:transparent;border:1px solid var(--line);color:var(--text-2);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.modal-close:hover{border-color:var(--primary);color:var(--primary)}
.modal-close svg{width:18px;height:18px}

/* 移动底部 Tab */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;
  height:60px;padding-bottom:env(safe-area-inset-bottom);
  background:rgba(10,17,31,.86);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  border-top:1px solid var(--line);
}
.tab-inner{display:grid;grid-template-columns:repeat(5,1fr);height:60px}
.tab-item{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  min-height:44px;color:var(--text-3);font-size:11px;position:relative;
}
.tab-item svg{width:24px;height:24px}
.tab-item::after{
  content:"";position:absolute;bottom:5px;width:4px;height:4px;border-radius:50%;
  background:var(--primary);opacity:0;transition:opacity var(--dur) var(--ease);
}
.tab-item.is-active{color:var(--primary)}
.tab-item.is-active::after{opacity:1;box-shadow:0 0 8px var(--primary)}

/* 响应式 */
@media (max-width:1024px){
  :root{--sec-y:76px;--nav-h:56px}
  .container{padding:0 24px}
  .nav-menu{display:none}
  .nav-cta{margin-left:auto;min-height:40px;padding:0 18px;font-size:14px}
  .tabbar{display:block}
  body{padding-bottom:76px}
  .hero-grid{grid-template-columns:1fr;gap:36px;min-height:auto;padding:48px 0 64px}
  .hero-media{max-width:560px}
  .hero-float{right:12px;bottom:-16px}
  .solution-grid,.news-layout,.contact-wrap{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){border-left:0}
  .stat:nth-child(3),.stat:nth-child(4){border-top:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  body{font-size:15px;line-height:1.8}
  .pain-grid{grid-template-columns:1fr}
  .solution-side{grid-template-columns:1fr}
  .solution-main .body{grid-template-columns:1fr}
  .news-item{grid-template-columns:1fr;gap:14px}
  .news-item-media{aspect-ratio:16/9}
  .form-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 24px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .hero-actions .btn{flex:1 1 auto}
}
@media (max-width:520px){
  .hero-float{position:static;width:100%;margin-top:16px}
  .stats{grid-template-columns:1fr}
  .stat+.stat{border-left:0;border-top:1px solid var(--line)}
  .trust-bar{gap:10px}
  .trust-bar span+span{padding-left:10px}
  .modal{padding:14px}
  .modal-panel{padding:24px 20px 22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:1ms!important}
  .glass-hover:hover,.btn:hover,.nav-link::after{transform:none!important}
  .btn-primary:hover{box-shadow:var(--shadow-glow)}
}

/* roulang page: article */
:root{
  --bg-900:#060A14;--bg-800:#0A111F;--bg-700:#0F1A2E;
  --primary:#22E0C8;--primary-600:#12B7A4;--primary-soft:rgba(34,224,200,.14);
  --accent:#FFAE4D;--accent-soft:rgba(255,174,77,.14);
  --violet:#6C5CE7;
  --text-1:#EAF2FF;--text-2:#A8B6CE;--text-3:#6E7C96;
  --glass-bg:rgba(255,255,255,.045);--glass-stroke:rgba(255,255,255,.10);--glass-stroke-hi:rgba(34,224,200,.38);
  --line:rgba(255,255,255,.08);
  --success:#3ED598;--warn:#FFC24D;--danger:#FF6B6B;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate","Barlow Semi Condensed",Inter,sans-serif;
  --radius-card:16px;--radius-lg:20px;--radius-btn:999px;--radius-input:10px;
  --shadow-card:0 1px 0 rgba(255,255,255,.05) inset,0 24px 60px -28px rgba(0,0,0,.85);
  --shadow-raise:0 12px 34px -14px rgba(0,0,0,.9);
  --shadow-glow:0 8px 28px -6px rgba(34,224,200,.45),0 0 0 1px rgba(34,224,200,.35) inset;
  --ease:cubic-bezier(.2,.7,.3,1);--dur:180ms;
  --section-gap:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;padding-bottom:76px;background:var(--bg-900);color:var(--text-2);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.25) 70%,transparent);
}
img{max-width:100%;display:block}
a{color:var(--text-2);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--primary)}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.14}
h2{font-size:clamp(23px,2.4vw,34px);line-height:1.25}
h3{font-size:18px;line-height:1.4;font-weight:600}
h4{font-size:15px;font-weight:600;letter-spacing:.04em}
p{margin:0 0 1.15em}
ul,ol{margin:0 0 1.15em;padding-left:20px;line-height:1.8}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;position:relative;z-index:1}
.section{padding:var(--section-gap) 0}
.section-head{margin-bottom:38px;max-width:760px}
.section-head h2{margin-bottom:14px}
.section-head p{margin:0;color:var(--text-2)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--primary);letter-spacing:.08em;margin-bottom:14px}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--primary)}

/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:60;height:72px;display:flex;align-items:center;
  background:rgba(6,10,20,.72);backdrop-filter:blur(16px) saturate(130%);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:28px;width:100%}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1);flex-shrink:0}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;flex-shrink:0;
  color:var(--primary);background:var(--primary-soft);border:1px solid var(--glass-stroke-hi);
  box-shadow:0 0 18px -6px rgba(34,224,200,.6);
}
.brand-mark svg{width:22px;height:22px}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;padding:10px 12px;font-size:15px;color:var(--text-2);
  display:inline-flex;align-items:center;min-height:44px;border-radius:10px;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:6px;transform:translateX(-50%);
  width:0;height:2px;border-radius:2px;background:var(--primary);transition:width var(--dur) var(--ease);
}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{width:18px}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{width:18px}
.nav-cta{flex-shrink:0}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:all var(--dur) var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#04140F;box-shadow:var(--shadow-glow)}
.btn-primary:hover{background:#3AE7D2;box-shadow:0 10px 34px -6px rgba(34,224,200,.55),0 0 0 1px rgba(34,224,200,.4) inset;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;color:var(--text-1);border-color:var(--glass-stroke)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-text{background:none;border:none;color:var(--primary);padding:0;min-height:44px;font-weight:600;gap:6px}
.btn-text svg{width:16px;height:16px;transition:transform var(--dur) var(--ease)}
.btn-text:hover svg{transform:translateX(3px)}
.btn[disabled]{opacity:.45;cursor:not-allowed}

/* ===== badges ===== */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:13px;line-height:1;white-space:nowrap;
}
.badge-primary{background:var(--primary-soft);color:var(--primary)}
.badge-accent{background:var(--accent-soft);color:var(--accent)}
.badge-neutral{border:1px solid var(--line);color:var(--text-3)}

/* ===== breadcrumb ===== */
.breadcrumb{font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;gap:6px;align-items:center;padding-top:32px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.6}
.breadcrumb .current{color:var(--text-1)}

/* ===== article hero ===== */
.article-hero{padding:24px 0 8px}
.article-hero h1{margin:14px 0 18px;max-width:900px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}
.meta-row .dot{opacity:.55}
.hero-strip{
  margin-top:26px;height:6px;border-radius:6px;
  background:linear-gradient(90deg,rgba(34,224,200,.9),rgba(108,92,231,.5) 45%,rgba(255,174,77,.45) 100%);
  opacity:.75;
}

/* ===== article layout ===== */
.article-layout{display:grid;grid-template-columns:minmax(0,820px) 220px;gap:56px;align-items:start;padding-bottom:var(--section-gap)}
.article-body{
  background:rgba(6,10,20,.72);border:1px solid var(--glass-stroke);border-radius:var(--radius-lg);
  padding:40px 44px 48px;box-shadow:var(--shadow-card);position:relative;overflow:hidden;
}
.article-body::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(34,224,200,.75),rgba(34,224,200,0) 60%);
}
.article-body > *:first-child{margin-top:0}
.article-body p{font-size:16.5px;line-height:1.9;color:var(--text-2)}
.article-body strong{color:var(--text-1)}
.article-body h2{
  font-size:clamp(21px,2vw,24px);line-height:1.35;margin:44px 0 18px;padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:4px;bottom:4px;width:3px;border-radius:3px;background:var(--primary);
}
.article-body h3{font-size:19px;margin:32px 0 14px;color:var(--text-1)}
.article-body a{color:var(--primary);text-decoration:underline;text-decoration-color:rgba(34,224,200,.35);text-underline-offset:3px}
.article-body ul,.article-body ol{padding-left:22px}
.article-body li{margin-bottom:8px}
.article-body blockquote{
  margin:24px 0;padding:20px 22px;border-left:3px solid var(--primary);
  background:var(--glass-bg);border-radius:0 12px 12px 0;color:var(--text-1);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;border:1px solid var(--line);margin:24px 0 10px}
.article-body figure{margin:24px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--text-3)}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px}
.article-body th{background:var(--bg-700);color:var(--text-1);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 14px;border:1px solid var(--line)}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;
  background:var(--bg-700);padding:2px 6px;border-radius:6px;color:var(--primary)
}
.article-body pre{
  background:#05080F;border:1px solid var(--line);border-radius:12px;padding:18px;
  overflow-x:auto;line-height:1.7;margin:24px 0;
}
.article-body pre code{background:none;padding:0;color:var(--text-2)}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0}

/* ===== toc ===== */
.toc-wrap{position:sticky;top:100px}
.toc-card{
  background:var(--glass-bg);border:1px solid var(--glass-stroke);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-card);
}
.toc-card h4{color:var(--text-3);margin-bottom:12px;font-size:13px;letter-spacing:.1em}
.toc-list{list-style:none;margin:0;padding:0;font-size:14px}
.toc-list li{margin-bottom:6px}
.toc-list a{
  display:block;padding:6px 0 6px 12px;border-left:2px solid transparent;color:var(--text-2);
  line-height:1.6;transition:all var(--dur) var(--ease);
}
.toc-list a:hover,.toc-list a.is-active{color:var(--primary);border-left-color:var(--primary)}
.toc-list li.lv3 a{padding-left:24px;font-size:13px;color:var(--text-3)}
.toc-tip{margin-top:16px;font-size:13px;color:var(--text-3);line-height:1.7;border-top:1px solid var(--line);padding-top:14px}

/* ===== empty state ===== */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:220px;text-align:center;background:var(--glass-bg);border:1px solid var(--glass-stroke);
  border-radius:var(--radius-card);padding:32px;
}
.empty-state svg{width:48px;height:48px;opacity:.5;color:var(--primary)}
.empty-state p{margin:0;font-size:14px;color:var(--text-2)}
.empty-state .sub{font-size:13px;color:var(--text-3)}

/* ===== related ===== */
.related-list{display:grid;gap:18px}
.news-card{
  display:grid;grid-template-columns:200px 1fr;gap:22px;align-items:center;
  background:var(--glass-bg);border:1px solid var(--glass-stroke);border-radius:var(--radius-card);
  padding:18px;box-shadow:var(--shadow-card);transition:all var(--dur) var(--ease);
}
.news-card:hover{transform:translateY(-2px);border-color:var(--glass-stroke-hi);box-shadow:var(--shadow-raise),0 0 24px rgba(34,224,200,.16)}
.news-thumb{
  aspect-ratio:16/9;border-radius:12px;overflow:hidden;border:1px solid var(--line);
  background:var(--bg-700);position:relative;
}
.news-thumb img{width:100%;height:100%;object-fit:cover;object-position:center}
.news-title{font-size:17px;font-weight:600;color:var(--text-1);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px}
.news-desc{font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px}
.news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-3);flex-wrap:wrap}
.news-meta .arrow{color:var(--primary);display:inline-flex;align-items:center;gap:4px;font-weight:600}
.news-meta svg{width:15px;height:15px}

/* ===== cta bar ===== */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:linear-gradient(120deg,rgba(34,224,200,.10),rgba(108,92,231,.10) 70%,transparent);
  border:1px solid var(--glass-stroke);border-radius:var(--radius-lg);padding:30px 34px;
  box-shadow:var(--shadow-card);
}
.cta-bar h3{font-size:20px;margin-bottom:8px}
.cta-bar p{margin:0;font-size:14.5px;color:var(--text-2)}

/* ===== footer ===== */
.site-footer{background:var(--bg-800);border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-text{font-size:14px;color:var(--text-3);line-height:1.8;margin:0;max-width:340px}
.footer-col h4{color:var(--text-1);margin-bottom:16px;font-size:15px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:10px;font-size:14px;color:var(--text-3)}
.footer-col a{color:var(--text-3);font-size:14px}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);padding-top:22px;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

/* ===== mobile tab ===== */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  height:calc(60px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);
  background:rgba(10,17,31,.86);backdrop-filter:blur(18px);border-top:1px solid var(--line);
}
.mobile-tab-inner{display:flex;height:60px}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  min-width:44px;min-height:44px;color:var(--text-3);font-size:11px;position:relative;
}
.tab-item svg{width:24px;height:24px}
.tab-item.is-active{color:var(--primary)}
.tab-item.is-active::after{
  content:"";position:absolute;bottom:6px;width:4px;height:4px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 8px rgba(34,224,200,.9);
}

/* ===== modal ===== */
.modal-mask{
  position:fixed;inset:0;z-index:90;display:none;align-items:center;justify-content:center;padding:20px;
  background:rgba(3,7,14,.72);backdrop-filter:blur(6px);
}
.modal-mask.is-open{display:flex}
.modal-panel{
  width:min(560px,92vw);max-height:90vh;overflow-y:auto;background:linear-gradient(180deg,rgba(15,26,46,.96),rgba(10,17,31,.98));
  border:1px solid var(--glass-stroke);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-card);
  position:relative;
}
.modal-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(34,224,200,.8),rgba(34,224,200,0) 65%);
}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:8px}
.modal-head h3{font-size:20px}
.modal-sub{font-size:13.5px;color:var(--text-3);margin:0 0 20px}
.modal-close{
  width:32px;height:32px;flex-shrink:0;border-radius:10px;border:1px solid var(--glass-stroke);
  background:transparent;color:var(--text-2);cursor:pointer;display:grid;place-items:center;
}
.modal-close:hover{color:var(--primary);border-color:var(--primary)}
.modal-close svg{width:16px;height:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;min-height:44px;padding:10px 12px;border-radius:var(--radius-input);
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-1);
  font-family:inherit;font-size:14.5px;transition:all var(--dur) var(--ease);
}
.field textarea{min-height:88px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft);
}
.field select option{background:var(--bg-700);color:var(--text-1)}
.form-note{font-size:12.5px;color:var(--text-3);line-height:1.7;margin:14px 0 0}

@media (max-width:1280px){
  :root{--section-gap:88px}
  .article-layout{grid-template-columns:minmax(0,1fr) 200px;gap:40px}
}
@media (max-width:1024px){
  :root{--section-gap:76px}
  .container{padding:0 24px}
  .site-header{height:56px}
  .nav-menu{display:none}
  .nav-inner{gap:16px}
  .brand-name{font-size:16px}
  .mobile-tab{display:block}
  .article-layout{grid-template-columns:1fr;gap:32px}
  .toc-wrap{display:none}
  .article-body{padding:32px 28px 38px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  :root{--section-gap:56px}
  body{font-size:15px;line-height:1.8}
  .container{padding:0 20px}
  .article-hero h1{font-size:clamp(26px,7vw,34px)}
  .article-body{padding:26px 20px 32px;border-radius:16px}
  .article-body p{font-size:15.5px}
  .news-card{grid-template-columns:1fr;gap:14px;padding:16px}
  .news-thumb{aspect-ratio:16/9}
  .cta-bar{padding:24px 20px;flex-direction:column;align-items:flex-start}
  .cta-bar .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:480px){
  .brand-mark{width:34px;height:34px}
  .nav-cta{padding:0 16px;font-size:14px}
  .article-body h2{margin-top:36px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation:none !important}
  .news-card:hover{transform:none}
  .btn-primary:hover{transform:none;box-shadow:var(--shadow-glow)}
}

/* roulang page: category1 */
:root{
  --bg-900:#060A14;
  --bg-800:#0A111F;
  --bg-700:#0F1A2E;
  --primary:#22E0C8;
  --primary-600:#12B7A4;
  --primary-soft:rgba(34,224,200,.14);
  --accent:#FFAE4D;
  --accent-soft:rgba(255,174,77,.14);
  --violet:#6C5CE7;
  --text-1:#EAF2FF;
  --text-2:#A8B6CE;
  --text-3:#6E7C96;
  --glass-bg:rgba(255,255,255,.045);
  --glass-stroke:rgba(255,255,255,.10);
  --glass-stroke-hi:rgba(34,224,200,.38);
  --line:rgba(255,255,255,.08);
  --success:#3ED598;
  --warn:#FFC24D;
  --danger:#FF6B6B;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate","Barlow Semi Condensed",Inter,system-ui,sans-serif;
  --radius-card:16px;
  --radius-box:20px;
  --radius-btn:999px;
  --radius-input:10px;
  --radius-img:12px;
  --shadow-card:0 1px 0 rgba(255,255,255,.05) inset,0 24px 60px -28px rgba(0,0,0,.85);
  --shadow-raise:0 12px 34px -14px rgba(0,0,0,.9);
  --shadow-glow:0 8px 28px -6px rgba(34,224,200,.45),0 0 0 1px rgba(34,224,200,.35) inset;
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
  --sec:104px;
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  background-color:var(--bg-900);
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px,48px 48px;
  background-position:0 0,0 0;
  padding-bottom:76px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--text-2);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--primary)}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--text-1);letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:var(--primary-soft);color:var(--text-1)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(16px) saturate(120%);
  -webkit-backdrop-filter:blur(16px) saturate(120%);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1)}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:36px;height:36px;flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  border-radius:11px;color:var(--primary);
  background:var(--primary-soft);
  border:1px solid var(--glass-stroke-hi);
  box-shadow:0 0 20px -6px rgba(34,224,200,.55);
}
.brand-mark svg{width:20px;height:20px}
.brand-name{font-size:17px;font-weight:600;letter-spacing:.02em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:8px 14px;font-size:15px;color:var(--text-2);
  transition:color var(--dur) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:auto;bottom:8px;width:0;height:2px;border-radius:2px;
  background:var(--primary);transition:width var(--dur) var(--ease);
}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{width:18px}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{width:18px}
.nav-cta{white-space:nowrap}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;font-size:15px;font-weight:600;
  border-radius:var(--radius-btn);border:1px solid transparent;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn-primary{background:var(--primary);color:#04140F;box-shadow:var(--shadow-glow)}
.btn-primary:hover{background:#3EE8D2;color:#04140F;transform:translateY(-1px);box-shadow:0 12px 34px -6px rgba(34,224,200,.5),0 0 0 1px rgba(34,224,200,.4) inset}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;color:var(--text-1);border-color:var(--glass-stroke)}
.btn-ghost:hover{color:var(--primary);border-color:var(--primary)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;background:none;border:0;padding:6px 0;
  color:var(--primary);font-size:15px;font-weight:600;min-height:44px;
}
.btn-text svg{width:16px;height:16px;transition:transform var(--dur) var(--ease)}
.btn-text:hover{color:#3EE8D2}
.btn-text:hover svg{transform:translateX(3px)}
.btn-block{width:100%}

/* ============ 页头 ============ */
.page-head{
  position:relative;overflow:hidden;
  padding:60px 0 64px;
  background-image:linear-gradient(180deg,rgba(6,10,20,.68) 0%,rgba(6,10,20,.93) 66%,#060A14 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-head::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(34,224,200,0),rgba(34,224,200,.55),rgba(108,92,231,.35),rgba(34,224,200,0));
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:14px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span.sep{color:var(--text-3);opacity:.6}
.breadcrumb .current{color:var(--text-1)}
.page-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;margin-bottom:18px;
  font-size:13px;border-radius:var(--radius-btn);
  color:var(--primary);background:var(--primary-soft);border:1px solid var(--glass-stroke-hi);
}
.page-title{font-size:clamp(30px,4.2vw,52px);line-height:1.14;font-weight:700;max-width:880px}
.page-lead{margin-top:20px;max-width:760px;font-size:16px;color:var(--text-2)}
.page-lead strong{color:var(--text-1);font-weight:600}

/* ============ 布局：目录 + 内容 ============ */
.main-wrap{padding-top:var(--sec)}
.layout-grid{display:grid;grid-template-columns:240px minmax(0,1fr);gap:56px;align-items:start}

.toc{
  position:sticky;top:96px;
  padding:22px 20px;border-radius:var(--radius-card);
  background:rgba(6,10,20,.78);
  border:1px solid var(--glass-stroke);
  box-shadow:var(--shadow-card);
}
.toc-title{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--text-3);margin-bottom:14px}
.toc-list li+li{margin-top:6px}
.toc-list a{
  display:block;padding:8px 10px;font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;border-radius:0 8px 8px 0;
}
.toc-list a:hover{color:var(--text-1);background:rgba(255,255,255,.03)}
.toc-list a.is-current{color:var(--primary);border-left-color:var(--primary);background:var(--primary-soft)}
.toc-note{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}

/* ============ 章节 ============ */
.chapter{margin-bottom:88px}
.chapter:last-of-type{margin-bottom:0}
.chapter-title{
  position:relative;padding-left:16px;
  font-size:clamp(23px,2.4vw,34px);line-height:1.25;font-weight:700;
}
.chapter-title::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),rgba(34,224,200,.15));
}
.chapter-text{margin-top:20px;font-size:16px;color:var(--text-2);max-width:820px}
.chapter-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;margin-top:30px;align-items:start}

.point-list{margin-top:22px}
.point-list li{
  position:relative;padding-left:24px;margin-bottom:12px;font-size:15.5px;color:var(--text-2);
}
.point-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px -2px rgba(34,224,200,.8);
}
.point-list li strong{color:var(--text-1);font-weight:600}

.img-frame{
  position:relative;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);background-color:var(--bg-700);
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.035) 0 6px,rgba(255,255,255,0) 6px 14px);
  aspect-ratio:16/9;
}
.img-frame img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;
}
.img-frame img.is-hidden{display:none}
.img-caption{margin-top:12px;font-size:13px;color:var(--text-3);text-align:center}

.note-card{
  margin-top:28px;padding:20px 22px;border-radius:var(--radius-card);
  background:rgba(6,10,20,.72);
  border:1px solid var(--glass-stroke);border-left:3px solid var(--primary);
}
.note-card p{font-size:15px;color:var(--text-2)}
.note-card strong{color:var(--text-1)}

/* ============ 数据条带 ============ */
.stat-band{
  position:relative;margin-top:var(--sec);
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  border-radius:var(--radius-box);overflow:hidden;
  background:var(--glass-bg);
  border:1px solid var(--glass-stroke);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
}
.stat-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(34,224,200,.6),rgba(34,224,200,0));
}
.stat-item{padding:34px 26px;border-left:1px solid var(--line)}
.stat-item:first-child{border-left:0}
.stat-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:clamp(32px,3.8vw,48px);line-height:1.05;font-weight:700;color:var(--primary);
}
.stat-num .unit{font-size:.5em;color:var(--accent);margin-left:4px;font-weight:600}
.stat-label{margin-top:10px;font-size:13px;color:var(--text-3)}

/* ============ FAQ ============ */
.section-title{margin-bottom:34px}
.section-title h2{font-size:clamp(23px,2.4vw,34px);line-height:1.25;font-weight:700}
.section-title p{margin-top:12px;font-size:15px;color:var(--text-3);max-width:720px}
.faq-section{margin-top:var(--sec)}
.faq-item{
  border:1px solid var(--line);border-radius:12px;
  background:rgba(6,10,20,.72);
  margin-bottom:10px;overflow:hidden;
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-item:hover{border-color:var(--glass-stroke-hi)}
.faq-item.is-open{border-color:var(--glass-stroke-hi);background:rgba(10,17,31,.85)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:none;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-1);min-height:56px;
}
.faq-item.is-open .faq-q{color:var(--primary)}
.faq-icon{
  flex:0 0 auto;width:20px;height:20px;color:var(--text-3);
  transition:transform 220ms var(--ease),color var(--dur) var(--ease);
}
.faq-icon svg{width:20px;height:20px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms var(--ease)}
.faq-a-inner{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ============ CTA 横条 ============ */
.cta-bar{
  margin-top:var(--sec);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:34px 36px;border-radius:var(--radius-box);
  background:linear-gradient(120deg,rgba(34,224,200,.10),rgba(108,92,231,.10));
  border:1px solid var(--glass-stroke-hi);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
}
.cta-bar h2{font-size:clamp(20px,1.9vw,26px);line-height:1.35;font-weight:700}
.cta-bar p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:640px}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:var(--sec);background:var(--bg-800);
  border-top:1px solid var(--line);padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-name{color:var(--text-1);font-size:17px;font-weight:600}
.footer-text{font-size:14px;line-height:1.85;color:var(--text-3);max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;letter-spacing:.04em;color:var(--text-1);margin-bottom:16px}
.footer-col ul li{margin-bottom:10px;font-size:14px;color:var(--text-3)}
.footer-col ul li a{font-size:14px;color:var(--text-3)}
.footer-col ul li a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

/* ============ 移动端底部 Tab ============ */
.mobile-tab{display:none}
.mobile-tab-inner{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:grid;grid-template-columns:repeat(5,1fr);
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(10,17,31,.86);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-top:1px solid var(--line);
}
.tab-link{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  min-width:44px;min-height:44px;font-size:11px;color:var(--text-3);
}
.tab-link svg{width:22px;height:22px}
.tab-link.is-active{color:var(--primary)}
.tab-link.is-active::after{
  content:"";position:absolute;bottom:6px;width:4px;height:4px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 8px 1px rgba(34,224,200,.85);
}

/* ============ 弹层与表单 ============ */
.modal-mask{
  position:fixed;inset:0;z-index:100;display:none;
  align-items:center;justify-content:center;padding:20px;
  background:rgba(3,7,14,.72);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.modal-mask.is-open{display:flex}
.modal-panel{
  width:min(560px,92vw);max-height:90vh;overflow-y:auto;
  border-radius:var(--radius-box);padding:28px;
  background:linear-gradient(180deg,rgba(15,26,46,.96),rgba(6,10,20,.96));
  border:1px solid var(--glass-stroke-hi);
  box-shadow:var(--shadow-card);
}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:20px}
.modal-head h2{font-size:21px;font-weight:700}
.modal-head p{margin-top:8px;font-size:13px;color:var(--text-3)}
.modal-close{
  flex:0 0 auto;width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;border:1px solid var(--glass-stroke);background:transparent;color:var(--text-2);
}
.modal-close:hover{color:var(--primary);border-color:var(--primary)}
.modal-close svg{width:18px;height:18px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:15px;color:var(--text-1);
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:var(--radius-input);
  padding:0 14px;height:44px;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field textarea{height:auto;min-height:88px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft);
}
.field select option{background:var(--bg-800);color:var(--text-1)}
.privacy-note{margin-top:14px;font-size:12.5px;line-height:1.7;color:var(--text-3)}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .container{padding:0 28px}
}
@media (max-width:1024px){
  :root{--sec:76px}
  .container{padding:0 24px}
  .nav-menu{display:none}
  .nav-inner{height:56px}
  .brand-mark{width:32px;height:32px}
  .brand-name{font-size:16px}
  .mobile-tab{display:block}
  .layout-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .toc{position:static;padding:18px}
  .toc-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px}
  .toc-list li+li{margin-top:0}
  .toc-list a{white-space:nowrap;border-left:0;border-bottom:2px solid transparent;border-radius:8px}
  .toc-list a.is-current{border-left:0;border-bottom-color:var(--primary)}
  .toc-note{display:none}
  .chapter-grid{grid-template-columns:minmax(0,1fr);gap:24px}
  .stat-band{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-item:nth-child(3){border-left:0;border-top:1px solid var(--line)}
  .stat-item:nth-child(4){border-top:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-bar{flex-direction:column;align-items:flex-start}
}
@media (max-width:768px){
  :root{--sec:56px}
  .container{padding:0 20px}
  body{font-size:15px;line-height:1.8}
  .page-head{padding:40px 0 44px}
  .page-lead{font-size:15px}
  .stat-band{grid-template-columns:minmax(0,1fr)}
  .stat-item{border-left:0;border-top:1px solid var(--line)}
  .stat-item:first-child{border-top:0}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-left:0}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-bar{padding:26px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .chapter{margin-bottom:64px}
  .nav-cta{padding:0 18px;font-size:14px}
}
@media (max-width:480px){
  .page-title{font-size:28px}
  .faq-q{font-size:15px;padding:16px 18px}
  .faq-a-inner{padding:0 18px 18px}
  .brand-name{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .btn:hover,.card:hover{transform:none !important}
  .btn-text:hover svg{transform:none}
}

/* roulang page: category2 */
:root{
  --bg-900:#060A14;--bg-800:#0A111F;--bg-700:#0F1A2E;
  --primary:#22E0C8;--primary-600:#12B7A4;--primary-soft:rgba(34,224,200,.14);
  --accent:#FFAE4D;--accent-soft:rgba(255,174,77,.14);
  --violet:#6C5CE7;
  --text-1:#EAF2FF;--text-2:#A8B6CE;--text-3:#6E7C96;
  --glass-bg:rgba(255,255,255,.045);--glass-stroke:rgba(255,255,255,.10);--glass-stroke-hi:rgba(34,224,200,.38);
  --line:rgba(255,255,255,.08);
  --success:#3ED598;--warn:#FFC24D;--danger:#FF6B6B;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate","Barlow Semi Condensed",Inter,sans-serif;
  --r-card:16px;--r-block:20px;--r-btn:999px;--r-input:10px;--r-img:12px;
  --shadow-card:0 1px 0 rgba(255,255,255,.05) inset,0 24px 60px -28px rgba(0,0,0,.85);
  --shadow-raise:0 12px 34px -14px rgba(0,0,0,.9);
  --shadow-glow:0 8px 28px -6px rgba(34,224,200,.45),0 0 0 1px rgba(34,224,200,.35) inset;
  --ease:cubic-bezier(.2,.7,.3,1);--dur:180ms;
  --sec:clamp(56px,7.4vw,104px);
  --radius-sm:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background-color:var(--bg-900);color:var(--text-2);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  padding-bottom:76px;-webkit-font-smoothing:antialiased;
  background-image:
    linear-gradient(180deg,rgba(6,10,20,.62) 0%,rgba(6,10,20,.92) 62%,#060A14 100%),
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px),
    url("/assets/images/backpic/back-1.png");
  background-repeat:no-repeat,repeat,repeat,no-repeat;
  background-size:100% 720px,48px 48px,48px 48px,100% auto;
  background-position:top center,0 0,0 0,top center;
}
img{max-width:100%;display:block;border-style:solid;border-width:0}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--primary)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
@media (max-width:1024px){.container{padding:0 24px}}
@media (max-width:520px){.container{padding:0 20px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,20,.72);backdrop-filter:blur(16px) saturate(130%);
  -webkit-backdrop-filter:blur(16px) saturate(130%);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:28px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;min-height:44px}
.brand-mark{
  width:36px;height:36px;display:grid;place-items:center;border-radius:11px;
  color:var(--primary);background:var(--primary-soft);
  border:1px solid rgba(34,224,200,.34);
  box-shadow:0 0 18px -4px rgba(34,224,200,.42);
}
.brand-mark svg{width:22px;height:22px}
.brand-name{font-size:18px;font-weight:700;color:var(--text-1);letter-spacing:.01em}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 14px;
  font-size:15px;color:var(--text-2);border-radius:10px;transition:color var(--dur) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:8px;height:2px;width:0;border-radius:2px;
  background:var(--primary);transform:translateX(-50%);transition:width var(--dur) var(--ease);
}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{width:18px}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{width:18px}
.nav-cta{flex:0 0 auto}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),
    border-color var(--dur) var(--ease),color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.btn-primary{background:var(--primary);color:#04140F;box-shadow:var(--shadow-glow)}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-1px);box-shadow:0 10px 34px -6px rgba(34,224,200,.5)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--text-1);border:1px solid var(--glass-stroke)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-link{display:inline-flex;align-items:center;gap:6px;min-height:44px;color:var(--primary);font-weight:600;font-size:15px}
.btn-link svg{width:18px;height:18px;transition:transform var(--dur) var(--ease)}
.btn-link:hover svg{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none}

/* ---------- page head ---------- */
.page-head{position:relative;padding:32px 0 8px;overflow:hidden}
.page-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(90deg,rgba(34,224,200,.10) 0 42%,rgba(34,224,200,0) 42% 100%);
  background-size:100% 1px;background-repeat:no-repeat;background-position:0 96px;
  opacity:.9;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:rgba(110,124,150,.6)}
.crumbs .current{color:var(--text-1)}
.page-head h1{
  margin-top:16px;font-size:clamp(30px,4.2vw,52px);line-height:1.14;font-weight:700;
  letter-spacing:-.01em;color:var(--text-1);max-width:18em;
}
.page-lede{margin-top:18px;max-width:760px;font-size:16px;line-height:1.85;color:var(--text-2)}
.page-lede strong{color:var(--text-1);font-weight:600}
.head-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:4px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:13px;line-height:1;white-space:nowrap;
}
.badge-primary{background:var(--primary-soft);color:var(--primary)}
.badge-accent{background:var(--accent-soft);color:var(--accent)}
.badge-muted{border:1px solid var(--line);color:var(--text-3)}

/* ---------- sections ---------- */
.section{padding-top:var(--sec)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px}
.section-head h2,.section h2{
  font-size:clamp(23px,2.4vw,34px);line-height:1.25;font-weight:700;color:var(--text-1);
}
.section-sub{margin-top:12px;font-size:15px;color:var(--text-3);max-width:720px}
.card{
  position:relative;border-radius:var(--r-card);border:1px solid var(--glass-stroke);
  background:var(--glass-bg);backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);padding:26px;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;border-radius:var(--r-card) var(--r-card) 0 0;
  background:linear-gradient(90deg,rgba(34,224,200,.4),rgba(34,224,200,0) 62%);
}
.card:hover{transform:translateY(-2px);border-color:var(--glass-stroke-hi);box-shadow:var(--shadow-card),0 0 24px rgba(34,224,200,.16)}

/* ---------- compare layout ---------- */
.cmp-layout{display:grid;grid-template-columns:5fr 7fr;gap:28px;align-items:start}
.quick-card{
  position:sticky;top:96px;border-color:var(--glass-stroke-hi);
  border-radius:var(--r-card);border-width:1px;border-style:solid;
  background:rgba(6,10,20,.72);backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);padding:28px;
}
.quick-card h3{font-size:19px;font-weight:600;color:var(--text-1)}
.quick-list{margin-top:18px;display:grid;gap:14px}
.quick-list li{display:grid;grid-template-columns:18px 1fr;gap:10px;font-size:15px;line-height:1.75}
.quick-list li span.dot{
  margin-top:9px;width:10px;height:10px;border-radius:3px;background:var(--primary);
  box-shadow:0 0 12px rgba(34,224,200,.55);
}
.quick-card .btn{width:100%;margin-top:22px}
.quick-note{margin-top:14px;font-size:13px;color:var(--text-3);line-height:1.7}

.cmp-panel{border-radius:var(--r-block);border:1px solid var(--glass-stroke);background:rgba(6,10,20,.72);padding:26px;box-shadow:var(--shadow-card)}
.cmp-panel h2{font-size:clamp(21px,2.1vw,28px)}
.cmp-panel .panel-sub{margin-top:14px;font-size:15px;color:var(--text-2)}
.cmp-table-wrap{margin-top:26px;overflow-x:auto;-webkit-overflow-scrolling:touch}
table.cmp-table{width:100%;border-collapse:collapse;min-width:560px}
table.cmp-table thead th{
  background:var(--bg-700);color:var(--text-1);font-size:14px;font-weight:600;
  text-align:left;padding:14px 16px;letter-spacing:.02em;
}
table.cmp-table thead th:first-child{border-radius:12px 0 0 12px}
table.cmp-table thead th:last-child{border-radius:0 12px 12px 0}
table.cmp-table tbody th{
  text-align:left;font-size:15px;font-weight:600;color:var(--text-1);
  padding:16px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.cmp-table tbody td{
  font-size:14.5px;color:var(--text-2);padding:16px;border-bottom:1px solid var(--line);
}
table.cmp-table tbody tr{transition:background-color var(--dur) var(--ease)}
table.cmp-table tbody tr:hover{background:rgba(255,255,255,.03)}
table.cmp-table tbody tr:last-child th,table.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-cards{display:none;gap:14px}
.cmp-card{border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.03);padding:18px}
.cmp-card h4{font-size:15px;font-weight:600;letter-spacing:.04em;color:var(--accent);margin-bottom:12px}
.cmp-card .row{display:grid;grid-template-columns:96px 1fr;gap:12px;padding:9px 0;border-top:1px solid var(--line);font-size:14.5px}
.cmp-card .row:first-of-type{border-top:0;padding-top:0}
.cmp-card .row .key{color:var(--text-3);font-size:13px}
.cmp-card .row .val{color:var(--text-2)}

/* ---------- qa blocks ---------- */
.qa-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:start}
.qa-body p{margin-top:16px;font-size:16px;line-height:1.85;color:var(--text-2);max-width:660px}
.qa-body h2{max-width:22em}
.qa-points{margin-top:20px;display:grid;gap:12px}
.qa-points li{
  display:grid;grid-template-columns:16px 1fr;gap:12px;align-items:start;
  font-size:15px;color:var(--text-2);
}
.qa-points li::before{
  content:"";margin-top:8px;width:8px;height:8px;border-radius:2px;background:var(--primary);
  box-shadow:0 0 10px rgba(34,224,200,.5);
}
.media-frame{
  position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  background:var(--bg-700);
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.045) 0 8px,rgba(255,255,255,0) 8px 16px);
  aspect-ratio:16/10;
}
.media-frame img{width:100%;height:100%;object-fit:cover;object-position:center}
.media-cap{margin-top:12px;font-size:13px;color:var(--text-3)}
.callout{
  margin-top:22px;border-radius:14px;border:1px solid var(--line);border-left:3px solid var(--primary);
  background:var(--glass-bg);padding:18px 20px;font-size:15px;color:var(--text-2);
}
.callout b{color:var(--text-1)}

/* ---------- FAQ ---------- */
.faq{margin-top:32px;display:grid;gap:10px;max-width:900px}
.faq-item{border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.02);overflow:hidden;transition:border-color var(--dur) var(--ease)}
.faq-item.is-open{border-color:var(--glass-stroke-hi)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
  min-height:56px;padding:10px 18px;text-align:left;font-size:16px;font-weight:600;color:var(--text-1);
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-item.is-open .faq-q{color:var(--primary)}
.faq-icon{flex:0 0 auto;width:20px;height:20px;color:currentColor;transition:transform 220ms var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms var(--ease)}
.faq-a-inner{padding:0 18px 18px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ---------- cta bar ---------- */
.cta-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  border-radius:var(--r-block);border:1px solid var(--glass-stroke);background:var(--glass-bg);
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  padding:32px;box-shadow:var(--shadow-card);position:relative;overflow:hidden;
}
.cta-bar::before{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,rgba(108,92,231,.18),rgba(34,224,200,.34),rgba(34,224,200,0));
}
.cta-bar h2{font-size:clamp(21px,2.1vw,28px)}
.cta-bar p{margin-top:10px;font-size:15px;color:var(--text-3);max-width:620px}

/* ---------- footer ---------- */
.site-footer{margin-top:var(--sec);background:var(--bg-800);border-top:1px solid var(--line);padding:64px 0 40px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-text{margin-top:16px;font-size:14px;color:var(--text-3);line-height:1.8;max-width:340px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-1);letter-spacing:.04em}
.footer-col ul{margin-top:14px;display:grid;gap:10px}
.footer-col li,.footer-col a,.footer-col span{font-size:14px;color:var(--text-3)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}

/* ---------- mobile tab bar ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  background:rgba(10,17,31,.86);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar-inner{display:grid;grid-template-columns:repeat(5,1fr);min-height:60px}
.tab-item{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  min-height:44px;padding:8px 2px;font-size:11px;color:var(--text-3);position:relative;
}
.tab-item svg{width:24px;height:24px;stroke-width:1.7}
.tab-item .tab-dot{
  position:absolute;bottom:6px;width:4px;height:4px;border-radius:50%;background:transparent;
}
.tab-item.is-active{color:var(--primary)}
.tab-item.is-active .tab-dot{background:var(--primary);box-shadow:0 0 10px rgba(34,224,200,.8)}

/* ---------- modal ---------- */
.modal{
  position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;
  padding:20px;background:rgba(3,7,14,.72);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.modal.is-open{display:flex}
.modal-panel{
  position:relative;width:min(560px,92vw);max-height:88vh;overflow-y:auto;
  border-radius:var(--r-block);border:1px solid var(--glass-stroke);
  background:rgba(9,15,28,.94);backdrop-filter:blur(16px) saturate(120%);
  -webkit-backdrop-filter:blur(16px) saturate(120%);
  box-shadow:var(--shadow-card);padding:28px;
}
.modal-panel h3{font-size:20px;font-weight:700;color:var(--text-1);padding-right:44px}
.modal-panel .modal-sub{margin-top:10px;font-size:14px;color:var(--text-3)}
.modal-close{
  position:absolute;top:18px;right:18px;width:32px;height:32px;border-radius:10px;
  display:grid;place-items:center;color:var(--text-2);border:1px solid var(--glass-stroke);
}
.modal-close:hover{color:var(--primary);border-color:var(--primary)}
.modal-close svg{width:18px;height:18px}
.form{margin-top:22px;display:grid;gap:16px}
.field{display:grid;gap:8px}
.field label{font-size:13px;color:var(--text-2)}
.field input,.field select,.field textarea{
  width:100%;min-height:44px;padding:10px 14px;border-radius:var(--r-input);
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-1);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field textarea{min-height:88px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft);
}
.field select option{background:var(--bg-800);color:var(--text-1)}
.privacy-note{font-size:12.5px;line-height:1.7;color:var(--text-3)}
.form-status{font-size:13px;color:var(--primary);min-height:18px}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .cmp-layout{gap:24px}
}
@media (max-width:1024px){
  .nav-menu{display:none}
  .nav-inner{min-height:56px}
  .tabbar{display:block}
  body{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
  .cmp-layout{grid-template-columns:1fr}
  .quick-card{position:static;top:auto;order:-1}
  .qa-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:860px){
  .cmp-table-wrap{overflow:visible}
  table.cmp-table{display:none;min-width:0}
  .cmp-cards{display:grid}
}
@media (max-width:640px){
  .card,.quick-card,.cmp-panel{padding:20px}
  .cta-bar{padding:24px}
  .btn{width:100%}
  .nav-cta{width:auto;padding:0 16px;font-size:14px}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding:48px 0 32px}
  .page-head h1{font-size:clamp(26px,7.6vw,34px)}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  .card:hover,.btn-primary:hover{transform:none}
  .btn-link:hover svg{transform:none}
}

/* roulang page: category3 */
:root{
  --bg-900:#060A14;
  --bg-800:#0A111F;
  --bg-700:#0F1A2E;
  --primary:#22E0C8;
  --primary-600:#12B7A4;
  --primary-soft:rgba(34,224,200,.14);
  --accent:#FFAE4D;
  --accent-soft:rgba(255,174,77,.14);
  --violet:#6C5CE7;
  --text-1:#EAF2FF;
  --text-2:#A8B6CE;
  --text-3:#6E7C96;
  --glass-bg:rgba(255,255,255,.045);
  --glass-stroke:rgba(255,255,255,.10);
  --glass-stroke-hi:rgba(34,224,200,.38);
  --line:rgba(255,255,255,.08);
  --success:#3ED598;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate","Barlow Semi Condensed",Inter,sans-serif;
  --r-card:16px;
  --r-block:20px;
  --r-btn:999px;
  --r-input:10px;
  --shadow-card:0 1px 0 rgba(255,255,255,.05) inset,0 24px 60px -28px rgba(0,0,0,.85);
  --shadow-raise:0 12px 34px -14px rgba(0,0,0,.9);
  --shadow-glow:0 8px 28px -6px rgba(34,224,200,.45),0 0 0 1px rgba(34,224,200,.35) inset;
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-2);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
}
img{max-width:100%;display:block;border:0}
a{color:var(--text-2);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--primary)}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700}
p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;position:relative;z-index:1}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(16px) saturate(120%);
  -webkit-backdrop-filter:blur(16px) saturate(120%);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:28px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:10px;
  color:var(--primary);
  background:var(--primary-soft);
  border:1px solid var(--glass-stroke-hi);
  box-shadow:0 0 18px -6px rgba(34,224,200,.6);
}
.brand-mark svg{width:22px;height:22px}
.brand-name{color:var(--text-1);font-size:18px;font-weight:700;letter-spacing:.01em}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:6px 2px;
  display:inline-flex;
  align-items:center;
  min-height:44px;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:translateX(-50%);
  transition:width var(--dur) var(--ease);
}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{width:18px}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{width:18px}
.nav-cta{flex:0 0 auto}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.btn-primary{
  background:var(--primary);
  color:#04140F;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{
  background:#38EBD4;
  color:#04140F;
  transform:translateY(-1px);
  box-shadow:0 12px 34px -6px rgba(34,224,200,.5),0 0 0 1px rgba(34,224,200,.4) inset;
}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{
  background:transparent;
  color:var(--text-1);
  border:1px solid var(--glass-stroke);
}
.btn-ghost:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-1px)}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
  min-height:44px;
}
.btn-link svg{width:16px;height:16px;transition:transform var(--dur) var(--ease)}
.btn-link:hover svg{transform:translateX(3px)}
.btn:disabled{opacity:.45;cursor:not-allowed}

/* ===== 徽章 ===== */
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  font-size:13px;
  line-height:1;
  white-space:nowrap;
}
.badge-primary{background:var(--primary-soft);color:var(--primary)}
.badge-accent{background:var(--accent-soft);color:var(--accent)}
.badge-plain{border:1px solid var(--line);color:var(--text-3)}

/* ===== 页头 ===== */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:56px 0 72px;
  border-bottom:1px solid var(--line);
}
.page-hero-bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.5;
}
.page-hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,.62) 0%,rgba(6,10,20,.92) 62%,#060A14 100%);
}
.page-hero::after{
  content:"";
  position:absolute;
  left:0;right:0;top:38%;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,224,200,.4),transparent);
  opacity:.6;
}
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:12px;
}
.crumbs span.sep{color:var(--text-3);opacity:.6}
.crumbs .current{color:var(--text-1)}
.page-hero h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.14;
  letter-spacing:-.01em;
  margin:14px 0 0;
}
.page-hero .lead{
  margin-top:18px;
  font-size:16px;
  color:var(--text-2);
  max-width:720px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}

/* ===== 板块通用 ===== */
.section{padding:76px 0}
.section-head{margin-bottom:36px;max-width:760px}
.section-head h2{font-size:clamp(23px,2.4vw,34px);line-height:1.25}
.section-head p{margin-top:12px;font-size:15px;color:var(--text-2)}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--accent);
  margin-bottom:10px;
}
.card{
  position:relative;
  background:var(--glass-bg);
  border:1px solid var(--glass-stroke);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{
  transform:translateY(-2px);
  border-color:var(--glass-stroke-hi);
  box-shadow:var(--shadow-raise),0 0 24px rgba(34,224,200,.16);
}
.media{
  position:relative;
  overflow:hidden;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--bg-700);
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.04) 0 1px,transparent 1px 9px);
}
.media img{width:100%;height:100%;object-fit:cover;object-position:center}

/* ===== 画廊 ===== */
.gallery{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-bottom:12px;
}
.gallery figure{
  margin:0;
  position:relative;
}
.gallery .media{height:240px;border-radius:var(--r-card)}
.gallery figure:nth-child(2){transform:translateY(16px)}
.gallery figcaption{
  position:absolute;
  left:16px;
  bottom:16px;
  right:16px;
  font-size:13px;
  color:var(--text-1);
  background:rgba(6,10,20,.66);
  border:1px solid var(--line);
  border-radius:999px;
  padding:4px 12px;
  display:inline-block;
  width:auto;
  max-width:max-content;
}
.gallery .media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,.05) 40%,rgba(6,10,20,.7) 100%);
}

/* ===== 案例瀑布流 ===== */
.case-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:28px;
}
.case-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.case-card .media{
  border-radius:0;
  border:0;
  border-bottom:1px solid var(--line);
  aspect-ratio:16/9;
  height:auto;
}
.case-body{padding:24px 26px 28px;display:flex;flex-direction:column;gap:12px;flex:1}
.case-body h3{font-size:19px;line-height:1.4;font-weight:600}
.case-body p{font-size:15px;color:var(--text-2)}
.case-body .btn-link{margin-top:auto}
.case-no{
  position:absolute;
  top:16px;
  left:16px;
  z-index:2;
  padding:4px 10px;
  border-radius:8px;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  font-weight:700;
  color:var(--primary);
  background:rgba(6,10,20,.72);
  border:1px solid var(--glass-stroke-hi);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
}

/* ===== 流程带 ===== */
.flow{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  padding:36px 28px;
  border-radius:var(--r-block);
  background:var(--glass-bg);
  border:1px solid var(--glass-stroke);
  box-shadow:var(--shadow-card);
}
.flow::before{
  content:"";
  position:absolute;
  left:12%;
  right:12%;
  top:46px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,224,200,.55),transparent);
}
.flow-step{position:relative;padding-top:0}
.flow-dot{
  width:10px;height:10px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 12px rgba(34,224,200,.9),0 0 0 4px rgba(34,224,200,.14);
  margin-bottom:20px;
}
.flow-step h3{font-size:16px;font-weight:600;margin-bottom:8px}
.flow-step p{font-size:14px;color:var(--text-2)}
.flow-step span.step-no{
  display:block;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  color:var(--accent);
  margin-bottom:6px;
}

/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:10px;max-width:880px}
.faq-item{
  border:1px solid var(--line);
  border-radius:12px;
  background:rgba(255,255,255,.02);
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.faq-item.is-open{border-color:var(--glass-stroke-hi);background:var(--glass-bg)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  text-align:left;
  padding:18px 20px;
  font-size:16px;
  font-weight:600;
  color:var(--text-1);
  min-height:44px;
  transition:color var(--dur) var(--ease);
}
.faq-item.is-open .faq-q{color:var(--primary)}
.faq-q .plus{
  flex:0 0 auto;
  width:20px;height:20px;
  color:var(--primary);
  transition:transform 220ms var(--ease);
}
.faq-item.is-open .plus{transform:rotate(45deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 220ms var(--ease);
}
.faq-a-inner{
  padding:0 20px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}

/* ===== CTA 横条 ===== */
.cta-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  padding:32px 34px;
  border-radius:var(--r-block);
  background:linear-gradient(120deg,rgba(34,224,200,.10),rgba(108,92,231,.14) 60%,rgba(255,174,77,.08));
  border:1px solid var(--glass-stroke);
  box-shadow:var(--shadow-card);
}
.cta-bar h2{font-size:clamp(20px,2vw,26px);margin-bottom:8px}
.cta-bar p{font-size:15px;color:var(--text-2);max-width:640px}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--bg-800);
  border-top:1px solid var(--line);
  padding:64px 0 32px;
  margin-top:40px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-text{font-size:14px;color:var(--text-2);max-width:320px}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--text-1);
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col li{font-size:14px;color:var(--text-2)}
.footer-col a{font-size:14px}
.footer-bottom{
  margin-top:40px;
  padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

/* ===== 移动端底部 Tab ===== */
.tab-bar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  height:60px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(10,17,31,.86);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  border-top:1px solid var(--line);
}
.tab-inner{display:flex;height:60px}
.tab-item{
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  min-width:44px;
  min-height:44px;
  font-size:11px;
  color:var(--text-3);
  position:relative;
  transition:color var(--dur) var(--ease);
}
.tab-item svg{width:24px;height:24px}
.tab-item.is-active{color:var(--primary)}
.tab-item.is-active::after{
  content:"";
  position:absolute;
  bottom:6px;
  width:4px;height:4px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 8px rgba(34,224,200,.9);
}

/* ===== 弹层 ===== */
.modal{
  position:fixed;
  inset:0;
  z-index:120;
  display:none;
  align-items:center;
  justify-content:center;
  padding:20px;
  background:rgba(3,7,14,.72);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
}
.modal.is-open{display:flex}
.modal-panel{
  width:min(560px,92vw);
  max-height:88vh;
  overflow-y:auto;
  border-radius:var(--r-block);
  background:rgba(10,17,31,.95);
  border:1px solid var(--glass-stroke);
  box-shadow:var(--shadow-card);
  padding:28px 28px 24px;
}
.modal-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  margin-bottom:8px;
}
.modal-head h3{font-size:20px}
.modal-head p{font-size:14px;color:var(--text-3);margin-top:6px}
.modal-close{
  width:32px;height:32px;
  flex:0 0 auto;
  display:grid;place-items:center;
  border-radius:10px;
  border:1px solid var(--line);
  color:var(--text-2);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.modal-close:hover{color:var(--primary);border-color:var(--primary)}
.modal-close svg{width:16px;height:16px}
.field{margin-top:16px}
.field label{
  display:block;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:8px;
}
.field input,.field select,.field textarea{
  width:100%;
  font-family:inherit;
  font-size:15px;
  color:var(--text-1);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  padding:11px 14px;
  min-height:44px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field textarea{min-height:88px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px var(--primary-soft);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.modal .btn-primary{width:100%;margin-top:22px}
.privacy{
  margin-top:14px;
  font-size:12.5px;
  line-height:1.7;
  color:var(--text-3);
}
.form-tip{
  margin-top:14px;
  font-size:13px;
  color:var(--success);
  display:none;
}
.form-tip.is-visible{display:block}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .nav-menu{display:none}
  .nav-inner{height:56px;gap:16px}
  .site-header{background:rgba(6,10,20,.9)}
  .brand-mark{width:30px;height:30px;border-radius:8px}
  .brand-mark svg{width:20px;height:20px}
  .brand-name{font-size:16px}
  .nav-cta{margin-left:auto;padding:0 16px;font-size:14px}
  .tab-bar{display:block}
  body{padding-bottom:76px}
  .section{padding:64px 0}
  .case-grid{grid-template-columns:1fr;gap:20px}
  .flow{grid-template-columns:repeat(2,1fr);gap:28px;padding:28px 22px}
  .flow::before{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .page-hero{padding:40px 0 56px}
}
@media (max-width:768px){
  .container{padding:0 24px}
  .gallery{
    display:flex;
    overflow-x:auto;
    gap:16px;
    padding-bottom:24px;
    scroll-snap-type:x mandatory;
    -webkit-overflow-scrolling:touch;
  }
  .gallery figure{flex:0 0 78%;scroll-snap-align:start}
  .gallery figure:nth-child(2){transform:none}
  .gallery .media{height:200px}
  .cta-bar{padding:26px 22px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  body{font-size:15px;line-height:1.8}
  .section{padding:56px 0}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .flow{grid-template-columns:1fr;padding:24px 20px}
  .case-body{padding:20px 20px 24px}
  .page-hero h1{font-size:clamp(26px,7vw,34px)}
  .modal-panel{padding:24px 20px 20px}
  .cta-bar .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .btn:hover,.card:hover,.btn-ghost:hover{transform:none;box-shadow:none}
}