/* roulang page: index */
:root{
  --ink-950:#05080F;
  --ink-900:#0A111F;
  --ink-800:#0F1A2E;
  --brand-700:#12376E;
  --brand-500:#1F5AA8;
  --glow-400:#22D9C0;
  --glow-300:#6BF0DE;
  --warm-400:#F0A85C;
  --text-main:#E8EEF7;
  --text-sub:#A9B6CC;
  --text-weak:#6C7C96;
  --line:rgba(255,255,255,0.12);
  --line-soft:rgba(255,255,255,0.07);
  --glass:rgba(255,255,255,0.06);
  --glass-strong:rgba(255,255,255,0.10);
  --radius-card:18px;
  --radius-panel:20px;
  --radius-img:16px;
  --radius-badge:6px;
  --shadow-card:0 10px 30px rgba(0,0,0,0.45);
  --shadow-glow:0 0 0 1px rgba(34,217,192,0.55),0 8px 28px rgba(34,217,192,0.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:64px;
  --space-7:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-950);
  color:var(--text-main);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--text-main);text-decoration:none;transition:color .18s var(--ease),background-color .18s var(--ease),transform .18s var(--ease);}
a:hover{color:var(--glow-300);}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--glow-400);outline-offset:2px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}
h1{font-size:clamp(32px,5vw,56px);font-weight:700;line-height:1.2;letter-spacing:-0.01em;}
h2{font-size:clamp(26px,3.4vw,38px);font-weight:650;line-height:1.3;letter-spacing:-0.005em;}
h3{font-size:22px;font-weight:600;line-height:1.4;}
h4{font-size:17px;font-weight:600;}
p{color:var(--text-sub);}
.section{padding:var(--space-7) 0;}
.section-tight{padding:var(--space-6) 0;}
.section-head{max-width:760px;margin-bottom:var(--space-5);}
.section-head h2{position:relative;padding-left:18px;}
.section-head h2::before{content:"";position:absolute;left:0;top:.28em;width:4px;height:.9em;border-radius:99px;background:linear-gradient(180deg,var(--glow-300),var(--brand-500));}
.section-head p{margin-top:14px;font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.12em;color:var(--glow-300);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--glow-400);display:inline-block;}
.muted{color:var(--text-weak);font-size:13px;letter-spacing:.02em;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform .18s var(--ease),box-shadow .2s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,var(--glow-400),var(--glow-300));
  color:#05201C;
  box-shadow:var(--shadow-glow);
  position:relative;overflow:hidden;
}
.btn-primary::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(110deg,transparent 35%,rgba(255,255,255,.55) 50%,transparent 65%);
  transform:translateX(-120%);
  transition:transform .35s var(--ease);
}
.btn-primary:hover{transform:translateY(-2px);color:#05201C;box-shadow:0 0 0 1px rgba(34,217,192,.7),0 12px 36px rgba(34,217,192,.4);}
.btn-primary:hover::after{transform:translateX(120%);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(255,255,255,0.02);
  border:1px solid rgba(255,255,255,0.22);
  color:var(--text-main);
}
.btn-ghost:hover{background:rgba(255,255,255,0.10);color:var(--text-main);transform:translateY(-2px);}
.btn-text{color:var(--glow-300);padding:6px 0;font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px;}
.btn-text i{transition:transform .18s var(--ease);}
.btn-text:hover i{transform:translateX(4px);}
.btn-sm{padding:10px 20px;font-size:14px;}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--radius-badge);
  font-size:12.5px;letter-spacing:.02em;border:1px solid transparent;
}
.badge-warm{border-color:rgba(240,168,92,.55);color:var(--warm-400);background:rgba(240,168,92,.08);}
.badge-glow{border-color:rgba(34,217,192,.5);color:var(--glow-300);background:rgba(34,217,192,.08);}
.badge-line{border-color:var(--line);color:var(--text-sub);background:rgba(255,255,255,.03);}

/* 玻璃卡 */
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  position:relative;
  overflow:hidden;
}
.glass::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);
}
.card-hover{transition:transform .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease);}
.card-hover:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.24);background:rgba(255,255,255,.09);box-shadow:var(--shadow-card);}

/* 头部导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:rgba(5,8,15,0.55);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,0.06);
  transition:height .25s var(--ease),background-color .25s var(--ease),box-shadow .25s var(--ease);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;transition:height .25s var(--ease);}
.site-header.is-scrolled{background:rgba(5,8,15,0.88);box-shadow:0 12px 30px rgba(0,0,0,.45);}
.site-header.is-scrolled .nav-inner{height:64px;}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;letter-spacing:.01em;color:var(--text-main);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand-500),var(--glow-400));
  display:grid;place-items:center;color:#05201C;font-size:15px;font-weight:800;
  box-shadow:0 6px 18px rgba(34,217,192,.32);
}
.brand:hover{color:var(--text-main);}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;padding:10px 14px;border-radius:10px;font-size:15px;color:var(--text-sub);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:99px;
  background:linear-gradient(90deg,var(--glow-400),var(--glow-300));
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--text-main);background:rgba(255,255,255,.05);}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--text-main);}
.nav-right{display:flex;align-items:center;gap:14px;}
.hamburger{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);align-items:center;justify-content:center;color:var(--text-main);
}
.hamburger:hover{background:rgba(255,255,255,.07);}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:88%;max-width:380px;z-index:120;
  background:rgba(10,17,31,0.97);
  border-left:1px solid var(--line);
  transform:translateX(102%);
  transition:transform .28s var(--ease);
  padding:24px;display:flex;flex-direction:column;gap:24px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);display:grid;place-items:center;color:var(--text-main);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{padding:14px 12px;border-radius:12px;font-size:16px;color:var(--text-sub);border:1px solid transparent;}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--text-main);background:rgba(255,255,255,.06);border-color:var(--line);}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;color:var(--text-weak);font-size:13px;}
.overlay{position:fixed;inset:0;background:rgba(3,5,10,.65);opacity:0;visibility:hidden;transition:opacity .25s var(--ease);z-index:110;}
.overlay.is-open{opacity:1;visibility:visible;}

/* Hero */
.hero{
  position:relative;
  padding:150px 0 72px;
  background-image:linear-gradient(180deg,rgba(5,8,15,.88),rgba(5,8,15,.35)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(60% 50% at 78% 18%,rgba(34,217,192,.16),transparent 70%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-copy .eyebrow{margin-bottom:18px;}
.hero h1{margin-bottom:20px;}
.hero h1 em{font-style:normal;color:var(--glow-300);}
.hero-lead{font-size:17px;line-height:1.9;color:var(--text-sub);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  margin-top:44px;border-top:1px solid var(--line-soft);padding-top:24px;gap:20px;
}
.hero-stats .stat-num{font-size:30px;font-weight:700;color:var(--glow-300);letter-spacing:-.01em;line-height:1.2;font-family:"Space Grotesk","Inter",sans-serif;}
.hero-stats .stat-num span{font-size:14px;color:var(--text-sub);margin-left:4px;font-weight:500;}
.hero-stats .stat-desc{font-size:13px;color:var(--text-weak);margin-top:6px;letter-spacing:.02em;}

.hero-visual{position:relative;}
.hero-visual img{border-radius:var(--radius-panel);box-shadow:0 24px 60px rgba(0,0,0,.6);}
.hero-float{
  position:relative;margin-top:-70px;margin-left:-40px;
  padding:22px;border-radius:var(--radius-panel);
  background:rgba(15,26,46,0.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  box-shadow:0 18px 45px rgba(0,0,0,.55);
  max-width:400px;
}
.hero-float h4{margin-bottom:14px;display:flex;align-items:center;justify-content:space-between;font-size:15px;color:var(--text-main);}
.rank-row{display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line-soft);}
.rank-row:last-child{border-bottom:0;}
.rank-no{width:22px;font-size:13px;color:var(--warm-400);font-weight:700;font-family:"Space Grotesk","Inter",sans-serif;}
.rank-name{flex:1;font-size:14px;color:var(--text-sub);}
.rank-bar{width:74px;height:5px;border-radius:99px;background:rgba(255,255,255,.09);overflow:hidden;}
.rank-bar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--brand-500),var(--glow-400));}
.rank-val{font-size:13px;color:var(--text-weak);width:44px;text-align:right;font-family:"Space Grotesk","Inter",sans-serif;}

/* 实时状态条 */
.live-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 28px;
  padding:14px 22px;border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  font-size:13.5px;color:var(--text-sub);
}
.live-dot{width:9px;height:9px;border-radius:50%;background:var(--glow-400);box-shadow:0 0 0 0 rgba(34,217,192,.6);animation:pulse 2s infinite;}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(34,217,192,.55);}
  70%{box-shadow:0 0 0 12px rgba(34,217,192,0);}
  100%{box-shadow:0 0 0 0 rgba(34,217,192,0);}
}
.live-bar strong{color:var(--text-main);font-weight:600;}

/* 痛点区 */
.pain-wrap{display:grid;grid-template-columns:.55fr 1.45fr;gap:56px;align-items:start;}
.pain-side h2{font-size:clamp(24px,2.6vw,32px);line-height:1.35;padding-left:18px;position:relative;}
.pain-side h2::before{content:"";position:absolute;left:0;top:.3em;width:4px;height:.85em;border-radius:99px;background:linear-gradient(180deg,var(--glow-300),var(--brand-500));}
.pain-side p{margin-top:16px;font-size:15px;color:var(--text-weak);}
.pain-list li{
  display:flex;gap:20px;align-items:flex-start;
  padding:26px 0;border-top:1px solid var(--line-soft);
}
.pain-list li:last-child{border-bottom:1px solid var(--line-soft);}
.pain-num{font-family:"Space Grotesk","Inter",sans-serif;font-size:15px;font-weight:700;color:var(--warm-400);letter-spacing:.06em;padding-top:4px;}
.pain-list h4{margin-bottom:6px;color:var(--text-main);}
.pain-list p{font-size:15px;margin:0;}

/* 解决方案交替块 */
.solution-row{display:grid;grid-template-columns:1fr 1fr;gap:0;align-items:center;margin-bottom:64px;}
.solution-row:last-child{margin-bottom:0;}
.solution-row.reverse .sol-media{order:2;}
.solution-row.reverse .sol-panel{order:1;}
.sol-media img{border-radius:var(--radius-img);box-shadow:0 20px 50px rgba(0,0,0,.55);}
.sol-panel{
  padding:32px;border-radius:var(--radius-panel);
  background:rgba(15,26,46,0.86);
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 18px 45px rgba(0,0,0,.5);
  margin-left:-56px;position:relative;z-index:2;
}
.solution-row.reverse .sol-panel{margin-left:0;margin-right:-56px;}
.sol-panel h3{margin-bottom:12px;}
.sol-panel > p{font-size:15px;margin-bottom:18px;}
.sol-list li{position:relative;padding-left:20px;font-size:15px;color:var(--text-sub);margin-bottom:10px;}
.sol-list li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--glow-400);box-shadow:0 0 8px rgba(34,217,192,.7);}

/* 成果带 */
.metrics-band{
  position:relative;
  background:linear-gradient(180deg,#070C16,#0A111F);
  border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
  padding:var(--space-6) 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:56px 56px,56px 56px;
}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric{padding:22px;border-radius:var(--radius-card);border:1px solid var(--line-soft);background:rgba(255,255,255,.03);transition:transform .2s var(--ease),border-color .2s var(--ease);}
.metric:hover{transform:translateY(-4px);border-color:rgba(34,217,192,.35);}
.metric .m-num{font-family:"Space Grotesk","Inter",sans-serif;font-size:clamp(28px,3vw,40px);font-weight:700;color:var(--glow-400);line-height:1.15;letter-spacing:-.02em;}
.metric .m-num span{font-size:15px;color:var(--text-sub);margin-left:6px;font-weight:500;}
.metric .m-label{margin-top:10px;font-size:14px;color:var(--text-main);}
.metric .m-note{margin-top:4px;font-size:12.5px;color:var(--text-weak);letter-spacing:.02em;}
.metrics-track{margin-top:40px;height:6px;border-radius:99px;background:rgba(255,255,255,.07);position:relative;overflow:hidden;}
.metrics-track i{position:absolute;left:0;top:0;bottom:0;width:78%;border-radius:99px;background:linear-gradient(90deg,var(--brand-500),var(--glow-400));}
.metrics-track span{position:absolute;right:0;top:-32px;font-size:13px;color:var(--text-weak);}

/* 证言 */
.t-track-wrap{position:relative;}
.t-track{
  display:flex;gap:24px;overflow-x:auto;padding:6px 4px 20px;
  scroll-snap-type:x mandatory;scrollbar-width:thin;
}
.t-track::-webkit-scrollbar{height:6px;}
.t-track::-webkit-scrollbar-thumb{background:rgba(255,255,255,.15);border-radius:99px;}
.t-card{
  flex:0 0 clamp(260px,42%,440px);scroll-snap-align:start;
  padding:28px;border-radius:var(--radius-panel);
}
.t-card.offset{margin-top:36px;}
.t-quote{font-size:16px;line-height:1.9;color:var(--text-main);margin-bottom:22px;}
.t-quote::before{content:"“";color:var(--glow-400);font-size:26px;line-height:0;margin-right:4px;font-family:Georgia,serif;}
.t-person{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line-soft);padding-top:16px;}
.t-avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-weight:700;color:#05201C;background:linear-gradient(140deg,var(--glow-300),var(--brand-500));font-size:15px;}
.t-name{font-size:14.5px;color:var(--text-main);}
.t-role{font-size:12.5px;color:var(--text-weak);}
.t-controls{display:flex;gap:10px;justify-content:flex-end;margin-top:8px;}
.t-btn{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;color:var(--text-sub);background:rgba(255,255,255,.02);}
.t-btn:hover{color:var(--glow-300);border-color:rgba(34,217,192,.5);background:rgba(255,255,255,.07);}

/* 资讯卡片 */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px;}
.news-head h2{position:relative;padding-left:18px;}
.news-head h2::before{content:"";position:absolute;left:0;top:.28em;width:4px;height:.9em;border-radius:99px;background:linear-gradient(180deg,var(--glow-300),var(--brand-500));}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{display:flex;flex-direction:column;border-radius:var(--radius-card);overflow:hidden;}
.news-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-body h3{font-size:17px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{font-size:14px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0;}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--text-weak);}
.empty-state{
  grid-column:1 / -1;text-align:center;padding:56px 24px;border-radius:var(--radius-panel);
  border:1px dashed rgba(255,255,255,.16);background:rgba(255,255,255,.02);
}
.empty-state i{font-size:30px;color:var(--text-weak);}
.empty-state p{margin:16px 0 20px;font-size:15px;color:var(--text-sub);}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:.6fr 1.4fr;gap:56px;align-items:start;}
.faq-side h2{padding-left:18px;position:relative;}
.faq-side h2::before{content:"";position:absolute;left:0;top:.28em;width:4px;height:.9em;border-radius:99px;background:linear-gradient(180deg,var(--glow-300),var(--brand-500));}
.faq-side p{margin-top:16px;font-size:15px;}
.faq-item{border:1px solid var(--line-soft);border-radius:14px;margin-bottom:12px;background:rgba(255,255,255,.025);transition:background-color .2s var(--ease),border-color .2s var(--ease);overflow:hidden;}
.faq-item.is-open{background:rgba(255,255,255,.07);border-color:rgba(34,217,192,.35);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--text-main);
}
.faq-q i{color:var(--glow-300);transition:transform .2s var(--ease);flex:0 0 auto;font-size:13px;}
.faq-item.is-open .faq-q i{transform:rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease);}
.faq-a p{padding:0 20px 20px;font-size:15px;margin:0;}

/* CTA */
.cta-band{
  position:relative;padding:var(--space-7) 0;
  background-image:linear-gradient(180deg,rgba(5,8,15,.9),rgba(5,8,15,.6)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
}
.cta-panel{
  position:relative;z-index:2;
  padding:clamp(32px,5vw,64px);
  border-radius:var(--radius-panel);
  background:rgba(255,255,255,.07);
  border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  text-align:center;
}
.cta-panel h2{margin-bottom:16px;}
.cta-panel p{max-width:640px;margin:0 auto 28px;font-size:16px;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.cta-note{margin-top:22px;font-size:13.5px;color:var(--text-weak);letter-spacing:.02em;}

/* 页脚 */
.site-footer{background:#070B14;border-top:1px solid var(--line-soft);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;max-width:280px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-main);}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--text-sub);display:inline-block;}
.footer-col a:hover{color:var(--glow-300);transform:translateX(2px);}
.footer-contact li{font-size:14px;color:var(--text-sub);display:flex;gap:10px;align-items:flex-start;margin-bottom:12px;}
.footer-contact i{color:var(--glow-400);margin-top:5px;font-size:13px;}
.footer-bottom{
  margin-top:52px;border-top:1px solid var(--line-soft);
  padding:22px 0;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-weak);
}

/* 响应式 */
@media screen and (max-width:1023px){
  .grid-container{padding-left:20px;padding-right:20px;}
  .section{padding:64px 0;}
  .hero{padding:124px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-float{margin:20px 0 0;max-width:100%;}
  .hero-visual img{max-height:340px;object-fit:cover;width:100%;}
  .pain-wrap{grid-template-columns:1fr;gap:28px;}
  .solution-row{grid-template-columns:1fr;gap:0;margin-bottom:48px;}
  .solution-row.reverse .sol-media{order:1;}
  .solution-row.reverse .sol-panel{order:2;}
  .sol-panel{margin:-36px 20px 0;}
  .solution-row.reverse .sol-panel{margin:-36px 20px 0;}
  .metrics-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-links{display:none;}
  .hamburger{display:flex;}
  .nav-right .btn{display:none;}
}
@media screen and (max-width:767px){
  body{font-size:15.5px;}
  .section{padding:52px 0;}
  .hero{padding:112px 0 48px;}
  .hero-stats{grid-template-columns:1fr;gap:16px;padding-top:20px;}
  .hero-stats .stat-num{font-size:26px;}
  .metrics-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .live-bar{border-radius:18px;padding:14px 16px;gap:8px 18px;font-size:13px;}
  .t-card{flex:0 0 86%;}
  .t-card.offset{margin-top:0;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-actions .btn{width:100%;}
  .glass,.hero-float,.sol-panel,.cta-panel{backdrop-filter:none;-webkit-backdrop-filter:none;}
  .hero-float,.sol-panel{background:rgba(15,26,46,.92);}
  .cta-panel{background:rgba(15,26,46,.9);}
}
@media screen and (max-width:520px){
  .grid-container{padding-left:16px;padding-right:16px;}
  .brand{font-size:17px;}
  .brand-mark{width:30px;height:30px;border-radius:9px;font-size:14px;}
  .sol-panel{padding:24px;margin:-28px 12px 0;}
  .solution-row.reverse .sol-panel{margin:-28px 12px 0;}
  .hero-float{padding:18px;}
  .rank-bar{width:52px;}
  .footer-bottom{flex-direction:column;}
  .btn{padding:12px 22px;font-size:14.5px;}
}
@media screen and (min-width:1440px){
  .grid-container{max-width:1280px;}
  .news-grid{gap:28px;}
}

/* roulang page: category1 */
:root{
  --ink-950:#05080F;
  --ink-900:#0A111F;
  --ink-850:#0F1A2E;
  --brand-700:#12376E;
  --brand-500:#1F5AA8;
  --glow-400:#22D9C0;
  --glow-300:#6BF0DE;
  --warm-400:#F0A85C;
  --text-1:#E8EEF7;
  --text-2:#A9B6CC;
  --text-3:#6C7C96;
  --line:rgba(255,255,255,0.10);
  --line-strong:rgba(255,255,255,0.18);
  --glass:rgba(255,255,255,0.06);
  --glass-2:rgba(255,255,255,0.10);
  --r-card:18px;
  --r-panel:20px;
  --r-img:16px;
  --r-btn:999px;
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sp-6:72px;
  --sp-7:104px;
  --shadow-1:0 10px 30px rgba(0,0,0,0.45);
  --shadow-glow:0 0 0 1px rgba(34,217,192,0.55),0 8px 28px rgba(34,217,192,0.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
}

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

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

body{
  margin:0;
  background:var(--ink-950);
  color:var(--text-1);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:17px;
  line-height:1.85;
  letter-spacing:0.01em;
  overflow-x:hidden;
}

body.no-scroll{overflow:hidden;}

h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text-1);line-height:1.3;}
h1{font-size:clamp(32px,5vw,56px);line-height:1.2;letter-spacing:-0.01em;}
h2{font-size:clamp(26px,3.4vw,38px);font-weight:650;letter-spacing:-0.005em;}
h3{font-size:22px;font-weight:600;}
h4{font-size:17px;font-weight:600;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img);}
a{color:var(--glow-300);text-decoration:none;transition:color var(--dur) var(--ease),opacity var(--dur) var(--ease);}
a:hover{color:var(--glow-400);}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
:focus-visible{outline:2px solid var(--glow-400);outline-offset:3px;border-radius:6px;}

.grid-container{
  max-width:1200px;
  padding-left:24px;
  padding-right:24px;
}

.section{padding:104px 0;position:relative;}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{position:relative;padding-left:20px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:0.28em;bottom:0.28em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--glow-300),var(--glow-400));
  box-shadow:0 0 18px rgba(34,217,192,0.5);
}
.section-head .lead{margin-top:16px;color:var(--text-2);font-size:17px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:0.08em;color:var(--warm-400);
  text-transform:uppercase;margin-bottom:14px;font-weight:600;
}
.eyebrow i{font-size:12px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;
  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);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--glow-400),var(--glow-300));
  color:#05201C;
  box-shadow:var(--shadow-glow);
  position:relative;overflow:hidden;
}
.btn-primary::after{
  content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,0.55),transparent);
  transform:skewX(-18deg);transition:left 420ms var(--ease);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,217,192,0.7),0 14px 36px rgba(34,217,192,0.36);color:#05201C;}
.btn-primary:hover::after{left:120%;}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;color:var(--text-1);
  border:1px solid rgba(255,255,255,0.22);
}
.btn-ghost:hover{background:rgba(255,255,255,0.10);border-color:rgba(255,255,255,0.36);color:#fff;transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:15px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--glow-300);
  font-weight:600;font-size:15px;padding:4px 0;
}
.btn-link i{transition:transform var(--dur) var(--ease);}
.btn-link:hover i{transform:translateX(4px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:6px;font-size:13px;font-weight:600;letter-spacing:0.02em;
  border:1px solid transparent;
}
.badge-warm{color:var(--warm-400);border-color:rgba(240,168,92,0.5);background:rgba(240,168,92,0.08);}
.badge-glow{color:var(--glow-400);border-color:rgba(34,217,192,0.5);background:rgba(34,217,192,0.08);}
.tag{
  display:inline-block;padding:6px 14px;border-radius:var(--r-btn);
  background:var(--glass);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(5,8,15,0.72);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,0.08);
  transition:height var(--dur) var(--ease),background var(--dur) var(--ease);
}
.site-header .header-inner{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  transition:height var(--dur) var(--ease);
}
.site-header.is-scrolled{background:rgba(5,8,15,0.92);box-shadow:0 12px 30px rgba(0,0,0,0.45);}
.site-header.is-scrolled .header-inner{height:64px;}

.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-weight:700;font-size:19px;letter-spacing:0.01em;}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand-500),var(--glow-400));
  color:#04181A;font-weight:800;font-size:18px;font-family:"Inter","Space Grotesk",sans-serif;
  box-shadow:0 0 0 1px rgba(34,217,192,0.35);
}
.brand-name{white-space:nowrap;}

.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;padding:10px 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;font-weight:500;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,0.06);}
.nav-links a.is-active{color:var(--glow-300);}
.nav-links a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--glow-400),var(--glow-300));
  box-shadow:0 0 12px rgba(34,217,192,0.7);
}

.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);background:var(--glass);
  align-items:center;justify-content:center;color:var(--text-1);font-size:17px;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-toggle:hover{background:var(--glass-2);border-color:rgba(255,255,255,0.3);}

/* ============ 移动端抽屉 ============ */
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:88%;max-width:380px;z-index:200;
  background:rgba(10,17,31,0.98);
  border-left:1px solid var(--line-strong);
  box-shadow:-20px 0 50px rgba(0,0,0,0.6);
  transform:translateX(105%);
  transition:transform 260ms var(--ease);
  padding:24px;overflow-y:auto;
  display:flex;flex-direction:column;gap:8px;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer-close{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);
  background:var(--glass);display:inline-flex;align-items:center;justify-content:center;color:var(--text-1);
}
.drawer-close:hover{background:var(--glass-2);}
.nav-drawer nav{display:flex;flex-direction:column;gap:4px;}
.nav-drawer nav a{
  padding:14px 16px;border-radius:12px;color:var(--text-1);font-size:16px;font-weight:500;
  border:1px solid transparent;
}
.nav-drawer nav a:hover{background:rgba(255,255,255,0.06);}
.nav-drawer nav a.is-active{color:var(--glow-300);border-color:rgba(34,217,192,0.35);background:rgba(34,217,192,0.08);}
.drawer-cta{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
.drawer-contact{margin-top:22px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-2);}
.drawer-contact span{display:flex;align-items:center;gap:10px;}
.drawer-backdrop{
  position:fixed;inset:0;background:rgba(3,6,12,0.66);z-index:150;opacity:0;visibility:hidden;
  transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.drawer-backdrop.is-open{opacity:1;visibility:visible;}

/* ============ Hero ============ */
.hero-cat{
  position:relative;padding:150px 0 76px;
  background:
    radial-gradient(900px 420px at 82% 12%,rgba(31,90,168,0.34),transparent 68%),
    radial-gradient(700px 360px at 6% 84%,rgba(34,217,192,0.14),transparent 70%),
    linear-gradient(180deg,var(--ink-950),var(--ink-900));
  overflow:hidden;
}
.hero-cat::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,0.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,0.85),transparent 82%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,0.85),transparent 82%);
}
.hero-cat .grid-container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;letter-spacing:0.02em;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--glow-300);}
.breadcrumb .sep{color:var(--text-3);}
.breadcrumb .current{color:var(--warm-400);}

.hero-grid{gap:16px;}
.hero-copy h1{margin-bottom:18px;}
.hero-copy h1 .hl{
  background:linear-gradient(120deg,var(--glow-300),var(--glow-400));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:18px;color:var(--text-2);max-width:560px;margin-bottom:28px;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;}

.hero-media{position:relative;}
.hero-figure{
  position:relative;border-radius:var(--r-panel);overflow:hidden;
  border:1px solid rgba(255,255,255,0.14);
  box-shadow:var(--shadow-1);
  background:var(--ink-850);
}
.hero-figure img{width:100%;height:auto;border-radius:0;aspect-ratio:16/11;object-fit:cover;}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,0.86) 0%,rgba(5,8,15,0.30) 55%,rgba(5,8,15,0.72) 100%);
}
.hero-float{
  position:absolute;left:20px;bottom:20px;right:20px;
  background:rgba(255,255,255,0.08);
  border:1px solid rgba(255,255,255,0.16);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(140%);
  padding:16px 18px;
  display:flex;align-items:center;gap:14px;
}
.hero-float .pulse{
  width:10px;height:10px;border-radius:50%;background:var(--glow-400);flex:none;
  box-shadow:0 0 0 0 rgba(34,217,192,0.6);animation:pulse 2.2s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(34,217,192,0.55);}
  70%{box-shadow:0 0 0 14px rgba(34,217,192,0);}
  100%{box-shadow:0 0 0 0 rgba(34,217,192,0);}
}
.hero-float strong{display:block;font-size:15px;color:var(--text-1);}
.hero-float span{font-size:13px;color:var(--text-2);}

/* ============ 介绍段落 ============ */
.intro-band{padding:72px 0;background:var(--ink-900);border-top:1px solid rgba(255,255,255,0.06);border-bottom:1px solid rgba(255,255,255,0.06);}
.intro-text{max-width:860px;color:var(--text-2);font-size:17px;}
.intro-text p{line-height:1.9;}
.intro-text strong{color:var(--text-1);font-weight:600;}

/* ============ 功能卡 ============ */
.card{
  background:var(--glass);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(140%);
  padding:28px;
  position:relative;overflow:hidden;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,0.55),transparent);
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(34,217,192,0.4);
  background:rgba(255,255,255,0.10);
  box-shadow:var(--shadow-1);
}
.card h3{margin-bottom:10px;}
.card p{color:var(--text-2);font-size:15.5px;line-height:1.8;}
.card-icon{
  width:46px;height:46px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(34,217,192,0.10);border:1px solid rgba(34,217,192,0.35);
  color:var(--glow-300);font-size:19px;margin-bottom:18px;
}
.card-num{
  font-family:"Inter","Space Grotesk",sans-serif;
  font-size:13px;font-weight:700;color:var(--warm-400);letter-spacing:0.12em;
  display:block;margin-bottom:12px;
}
.modules-grid{margin-top:-16px;}
.modules-grid > .cell{padding-top:16px;}

/* ============ 时间轴 ============ */
.timeline-wrap{margin-top:8px;}
.timeline{position:relative;padding-left:8px;}
.timeline::before{
  content:"";position:absolute;left:30px;top:14px;bottom:14px;width:1px;
  background:linear-gradient(180deg,rgba(34,217,192,0.65),rgba(31,90,168,0.5),rgba(34,217,192,0.1));
}
.timeline-item{position:relative;padding-left:88px;padding-bottom:26px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-node{
  position:absolute;left:0;top:0;width:60px;height:60px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:"Inter","Space Grotesk",sans-serif;font-weight:700;font-size:18px;color:var(--glow-300);
  background:rgba(15,26,46,0.95);
  border:1px solid rgba(34,217,192,0.45);
  box-shadow:0 0 0 6px rgba(34,217,192,0.06),0 0 22px rgba(34,217,192,0.22);
}
.timeline-card{
  background:var(--glass);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(140%);
  padding:24px 26px;
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.timeline-card:hover{border-color:rgba(34,217,192,0.4);background:rgba(255,255,255,0.10);transform:translateX(3px);}
.timeline-card h3{margin-bottom:8px;font-size:20px;}
.timeline-card p{color:var(--text-2);font-size:15.5px;margin:0;}
.timeline-meta{display:inline-block;font-size:13px;color:var(--warm-400);margin-bottom:8px;letter-spacing:0.04em;}

/* ============ 适用场景 ============ */
.scene-col{padding-right:12px;}
.scene-list li{
  position:relative;padding:14px 0 14px 30px;
  border-bottom:1px solid rgba(255,255,255,0.07);
  color:var(--text-2);font-size:16px;
}
.scene-list li:last-child{border-bottom:0;}
.scene-list li::before{
  content:"";position:absolute;left:6px;top:23px;width:9px;height:9px;border-radius:50%;
  background:var(--glow-400);box-shadow:0 0 12px rgba(34,217,192,0.7);
}
.scene-list li strong{color:var(--text-1);font-weight:600;display:block;font-size:16.5px;margin-bottom:2px;}

/* ============ 数据条 ============ */
.stat-strip{
  background:linear-gradient(120deg,rgba(18,55,110,0.55),rgba(15,26,46,0.9));
  border:1px solid rgba(255,255,255,0.12);
  border-radius:var(--r-panel);
  padding:34px 28px;
  position:relative;overflow:hidden;
}
.stat-strip::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,0.04) 1px,transparent 1px);
  background-size:100% 34px;
  mask-image:linear-gradient(90deg,rgba(0,0,0,0.7),transparent);
  -webkit-mask-image:linear-gradient(90deg,rgba(0,0,0,0.7),transparent);
}
.stat-item{position:relative;z-index:2;padding:10px 6px;transition:transform var(--dur) var(--ease);}
.stat-item:hover{transform:translateY(-3px);}
.stat-num{
  font-family:"Inter","Space Grotesk",sans-serif;
  font-size:clamp(30px,3.4vw,42px);font-weight:700;color:var(--glow-400);
  line-height:1.1;letter-spacing:-0.01em;
}
.stat-num small{font-size:16px;margin-left:4px;color:var(--glow-300);font-weight:600;}
.stat-label{font-size:14px;color:var(--text-2);margin-top:6px;}
.stat-desc{font-size:13px;color:var(--text-3);margin-top:2px;}

/* ============ FAQ ============ */
.faq-col-title h2{padding-left:20px;position:relative;}
.faq-col-title h2::before{
  content:"";position:absolute;left:0;top:0.28em;bottom:0.28em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--glow-300),var(--glow-400));
  box-shadow:0 0 18px rgba(34,217,192,0.5);
}
.faq-col-title p{margin-top:16px;color:var(--text-2);font-size:16px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--glass);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(140%);
  overflow:hidden;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.faq-item.is-open{background:rgba(255,255,255,0.11);border-color:rgba(34,217,192,0.38);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;text-align:left;font-size:16.5px;font-weight:600;color:var(--text-1);
}
.faq-q .chev{
  flex:none;width:30px;height:30px;border-radius:50%;
  border:1px solid rgba(255,255,255,0.22);
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;color:var(--glow-300);
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-item.is-open .chev{transform:rotate(90deg);background:rgba(34,217,192,0.14);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 260ms var(--ease),opacity 200ms var(--ease),padding 200ms var(--ease);
  opacity:0;padding:0 24px;
}
.faq-item.is-open .faq-a{opacity:1;padding:0 24px 22px;}
.faq-a p{color:var(--text-2);font-size:15.5px;margin:0;}

/* ============ CTA ============ */
.cta-band{position:relative;padding:0 0 104px;}
.cta-panel{
  position:relative;overflow:hidden;border-radius:24px;
  border:1px solid rgba(255,255,255,0.14);
  box-shadow:var(--shadow-1);
  padding:72px 48px;
  text-align:center;
  background:var(--ink-850);
}
.cta-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:0.55;
}
.cta-panel::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,0.90),rgba(5,8,15,0.72) 45%,rgba(5,8,15,0.92));
}
.cta-inner{position:relative;z-index:2;max-width:720px;margin:0 auto;}
.cta-inner h2{margin-bottom:16px;}
.cta-inner p{color:var(--text-2);font-size:17px;margin-bottom:28px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:20px;}
.cta-note{font-size:14px;color:var(--text-3);}
.cta-note i{color:var(--glow-400);margin-right:6px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);
  border-top:1px solid rgba(255,255,255,0.08);
  padding:72px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand p{color:var(--text-2);font-size:15px;margin-top:18px;max-width:320px;line-height:1.8;}
.footer-col h4{font-size:15px;letter-spacing:0.06em;color:var(--text-1);margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{color:var(--text-2);font-size:15px;display:inline-block;transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);}
.footer-col a:hover{color:var(--glow-300);transform:translateX(-2px);}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;color:var(--text-2);font-size:15px;}
.footer-contact i{color:var(--glow-400);margin-top:6px;font-size:14px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.08);
  padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13.5px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn{display:none;}
  .section{padding:80px 0;}
  .hero-cat{padding:132px 0 64px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-panel{padding:56px 32px;}
}

@media screen and (max-width:767px){
  body{font-size:16px;line-height:1.8;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .section{padding:64px 0;}
  .section-tight{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .hero-cat{padding:120px 0 56px;}
  .hero-sub{font-size:16.5px;}
  .hero-actions{gap:10px;}
  .btn{padding:13px 22px;font-size:15px;}
  .card{padding:22px;}
  .timeline-item{padding-left:74px;}
  .timeline-node{width:50px;height:50px;font-size:16px;}
  .timeline::before{left:25px;}
  .timeline-card{padding:20px;}
  .stat-strip{padding:26px 20px;}
  .faq-q{padding:18px;font-size:15.5px;}
  .faq-a{padding:0 18px;}
  .faq-item.is-open .faq-a{padding:0 18px 20px;}
  .cta-panel{padding:44px 22px;border-radius:20px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .hero-float{position:static;margin-top:14px;background:rgba(15,26,46,0.85);backdrop-filter:none;}
  .card,.timeline-card,.faq-item,.stat-strip{backdrop-filter:none;background:rgba(15,26,46,0.85);}
}

@media screen and (max-width:520px){
  h1{font-size:clamp(28px,8vw,36px);}
  h2{font-size:clamp(22px,6.4vw,28px);}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .timeline-item{padding-left:62px;}
  .timeline-node{width:44px;height:44px;font-size:15px;}
  .timeline::before{left:22px;}
  .brand{font-size:17px;}
  .brand-mark{width:32px;height:32px;font-size:16px;}
}

@media screen and (min-width:1440px){
  .grid-container{max-width:1280px;}
  .section{padding:120px 0;}
}

/* roulang page: category2 */
:root{
  --ink-950:#05080F;
  --ink-900:#0A111F;
  --ink-800:#0F1A2E;
  --brand-700:#12376E;
  --brand-500:#1F5AA8;
  --glow-400:#22D9C0;
  --glow-300:#6BF0DE;
  --warm-400:#F0A85C;
  --text:#E8EEF7;
  --text-2:#A9B6CC;
  --text-3:#6C7C96;
  --line:rgba(255,255,255,.12);
  --line-soft:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.06);
  --radius-lg:20px;
  --radius:18px;
  --radius-sm:14px;
  --pill:999px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-950);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Segoe UI",Inter,Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote, dl, dd{margin:0;padding:0}
h1,h2,h3,h4{font-weight:650;line-height:1.3;color:var(--text);letter-spacing:-.01em}
img{max-width:100%;display:block;border-radius:16px}
a{color:var(--glow-300);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--glow-400)}
ul,ol{list-style:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--glow-400);outline-offset:3px;border-radius:6px}
::selection{background:rgba(34,217,192,.3);color:#fff}
.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%}
.grid-container.wide{max-width:1280px}
section{position:relative}
.section{padding:104px 0}
.section.tight{padding:80px 0}
.section-title{font-size:clamp(26px,3.4vw,38px);font-weight:650;line-height:1.3;position:relative;padding-left:20px}
.section-title::before{content:"";position:absolute;left:0;top:.28em;width:4px;height:1.05em;border-radius:4px;background:linear-gradient(180deg,var(--glow-400),var(--brand-500))}
.section-sub{color:var(--text-2);font-size:16.5px;max-width:720px;margin-top:16px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;color:var(--glow-400);text-transform:uppercase;margin-bottom:18px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--glow-400);display:inline-block}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-size:15px;font-weight:600;border-radius:var(--pill);padding:13px 28px;transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease);white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--glow-400),var(--glow-300));color:#05201C;box-shadow:0 0 0 1px rgba(34,217,192,.55),0 8px 28px rgba(34,217,192,.28);position:relative;overflow:hidden}
.btn-primary::after{content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.55),transparent);transform:skewX(-18deg);transition:left 420ms var(--ease)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,217,192,.7),0 14px 38px rgba(34,217,192,.4);color:#05201C}
.btn-primary:hover::after{left:130%}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--text);box-shadow:inset 0 0 0 1px rgba(255,255,255,.22)}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-text{display:inline-flex;align-items:center;gap:8px;color:var(--glow-300);font-weight:600;font-size:15px;padding:6px 2px}
.btn-text i{transition:transform var(--dur) var(--ease)}
.btn-text:hover i{transform:translateX(4px)}

/* ============ 徽章 / 标签 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;letter-spacing:.03em;padding:4px 10px;border-radius:6px;border:1px solid var(--warm-400);color:var(--warm-400);background:rgba(240,168,92,.08)}
.badge-glow{border-color:rgba(34,217,192,.6);color:var(--glow-300);background:rgba(34,217,192,.08)}
.tag{display:inline-block;font-size:14px;color:var(--text-2);padding:9px 16px;border-radius:var(--pill);background:rgba(255,255,255,.05);border:1px solid var(--line-soft);transition:all var(--dur) var(--ease)}
.tag:hover{color:var(--text);border-color:rgba(34,217,192,.5);background:rgba(34,217,192,.08);transform:translateY(-2px)}

/* ============ 顶部导航 ============ */
.site-header{position:fixed;top:0;left:0;right:0;z-index:80;height:72px;background:rgba(5,8,15,.72);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);border-bottom:1px solid var(--line-soft);transition:height var(--dur) var(--ease),background var(--dur) var(--ease)}
.site-header.is-scrolled{height:64px;background:rgba(5,8,15,.94)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:100%}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--text);letter-spacing:.02em}
.brand:hover{color:var(--text)}
.brand-mark{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,var(--glow-400),var(--brand-500));color:#05201C;font-weight:800;font-size:16px;box-shadow:0 6px 18px rgba(34,217,192,.25)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;padding:8px 15px;border-radius:var(--pill);font-size:15px;color:var(--text-2)}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-links a.is-active{color:var(--text);font-weight:600}
.nav-links a.is-active::after{content:"";position:absolute;left:15px;right:15px;bottom:1px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--glow-400),var(--glow-300));box-shadow:0 0 12px rgba(34,217,192,.7)}
.header-actions{display:flex;align-items:center;gap:12px}
.header-actions .btn{padding:10px 22px;font-size:14px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.06);border:1px solid var(--line-soft);color:var(--text);font-size:17px}
.nav-toggle:hover{background:rgba(255,255,255,.12)}

/* ============ 移动端抽屉 ============ */
.drawer-mask{position:fixed;inset:0;background:rgba(3,6,12,.72);opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);z-index:90}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:88%;max-width:360px;background:rgba(10,17,31,.98);border-left:1px solid var(--line);z-index:100;transform:translateX(102%);transition:transform 260ms var(--ease);padding:26px 22px;display:flex;flex-direction:column;gap:22px;overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,.06);color:var(--text);font-size:16px;border:1px solid var(--line-soft)}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{padding:13px 16px;border-radius:var(--radius-sm);color:var(--text-2);font-size:16px;background:rgba(255,255,255,.03);border:1px solid transparent}
.drawer-nav a:hover{color:var(--text);background:rgba(255,255,255,.08)}
.drawer-nav a.is-active{color:var(--glow-300);border-color:rgba(34,217,192,.45);background:rgba(34,217,192,.08)}
.drawer-foot{margin-top:auto;color:var(--text-3);font-size:13.5px;display:flex;flex-direction:column;gap:8px;border-top:1px solid var(--line-soft);padding-top:18px}
.drawer-foot i{color:var(--glow-400);margin-right:8px}

/* ============ 内页 Hero ============ */
.page-hero{position:relative;padding:152px 0 92px;text-align:center;background-image:linear-gradient(180deg,rgba(5,8,15,.9) 0%,rgba(5,8,15,.62) 55%,rgba(5,8,15,.92) 100%),url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;overflow:hidden}
.page-hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(34,217,192,.45),transparent)}
.crumbs{margin-bottom:26px}
.crumbs ol{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;font-size:13px;letter-spacing:.02em;color:var(--text-3)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--text-3)}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--glow-400)}
.crumbs [aria-current="page"]{color:var(--glow-400)}
.page-hero h1{font-size:clamp(32px,5vw,56px);font-weight:700;line-height:1.2;letter-spacing:-.01em;max-width:900px;margin:0 auto}
.page-hero h1 span{background:linear-gradient(120deg,var(--glow-300),var(--glow-400));-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero p.lead{max-width:720px;margin:22px auto 0;color:var(--text-2);font-size:17.5px;line-height:1.9}
.hero-chips{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:32px}
.chip{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);padding:9px 18px;border-radius:var(--pill);background:var(--glass);border:1px solid var(--line-soft);backdrop-filter:blur(10px)}
.chip i{color:var(--glow-400);font-size:12px}

/* ============ 全宽分栏清单 ============ */
.split-section{background:var(--ink-950);
  background-image:radial-gradient(circle at 12% 8%,rgba(31,90,168,.22),transparent 45%),radial-gradient(circle at 88% 78%,rgba(34,217,192,.12),transparent 42%);
}
.split-row{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:60px 0;border-bottom:1px solid var(--line-soft)}
.split-row:last-child{border-bottom:0;padding-bottom:0}
.split-row:first-child{padding-top:0}
.split-row.reverse .split-copy{order:2}
.split-row.reverse .split-visual{order:1}
.split-copy h2{font-size:clamp(24px,2.8vw,32px);font-weight:650;line-height:1.35;margin-bottom:12px}
.split-copy .hint{color:var(--text-2);font-size:16px;margin-bottom:26px}
.num-list li{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--line-soft);align-items:flex-start}
.num-list li:last-child{border-bottom:0}
.num-list .num{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--warm-400);min-width:36px;padding-top:4px}
.num-list strong{display:block;font-size:16.5px;font-weight:600;color:var(--text);margin-bottom:4px}
.num-list span{color:var(--text-2);font-size:15px;line-height:1.8}
.glass-panel{position:relative;border-radius:var(--radius-lg);padding:30px;background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);box-shadow:var(--shadow);overflow:hidden}
.glass-panel::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.5),transparent)}
.glass-panel img{border-radius:var(--radius-sm);margin-bottom:20px;aspect-ratio:16/10;object-fit:cover;width:100%}
.glass-panel h3{font-size:20px;font-weight:600;margin-bottom:10px}
.glass-panel p{color:var(--text-2);font-size:15.5px}
.panel-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.panel-meta .tag{font-size:13px;padding:6px 13px}

/* ============ 数据条 ============ */
.stat-band{background:var(--ink-900);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:48px 48px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-item{padding:44px 26px;text-align:center;border-right:1px solid var(--line-soft);transition:transform var(--dur) var(--ease),background var(--dur) var(--ease)}
.stat-item:last-child{border-right:0}
.stat-item:hover{transform:translateY(-4px);background:rgba(34,217,192,.05)}
.stat-item .val{font-size:clamp(30px,3.6vw,44px);font-weight:700;color:var(--glow-400);letter-spacing:-.02em;line-height:1.1;font-variant-numeric:tabular-nums}
.stat-item .val small{font-size:16px;font-weight:600;margin-left:4px;color:var(--glow-300)}
.stat-item .lbl{display:block;margin-top:10px;font-size:14px;color:var(--text-2)}
.stat-item .note{display:block;margin-top:4px;font-size:12.5px;color:var(--text-3)}

/* ============ 引述块 ============ */
.quote-band{position:relative;padding:110px 0;background-image:linear-gradient(180deg,rgba(5,8,15,.86),rgba(5,8,15,.7)),url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;text-align:center;border-bottom:1px solid var(--line-soft)}
.quote-mark{font-size:76px;line-height:1;color:var(--glow-400);opacity:.55;font-family:Georgia,"Songti SC",serif}
.quote-band blockquote{max-width:840px;margin:6px auto 0;font-size:clamp(22px,2.7vw,32px);font-weight:650;line-height:1.5;color:var(--text)}
.quote-sign{margin-top:26px;font-size:14px;color:var(--text-2);letter-spacing:.04em}
.quote-sign strong{color:var(--glow-300);font-weight:600}

/* ============ 适用场景 ============ */
.scene-section{background:var(--ink-950)}
.scene-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:start}
.scene-list{display:flex;flex-wrap:wrap;gap:12px}
.scene-list .tag{font-size:14.5px;padding:11px 20px}

/* ============ FAQ ============ */
.faq-section{background:var(--ink-900);border-top:1px solid var(--line-soft)}
.faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start}
.faq-side p{color:var(--text-2);font-size:15.5px;margin-top:18px}
.faq-side .btn{margin-top:26px}
.accordion{background:transparent;border:0;margin:0}
.accordion .accordion-item{border:0;background:transparent;margin-bottom:12px}
.accordion .accordion-item:last-child{margin-bottom:0}
.accordion .accordion-title{display:block;position:relative;padding:20px 62px 20px 22px;border-radius:var(--radius-sm);background:rgba(255,255,255,.05);border:1px solid var(--line-soft);color:var(--text);font-size:16.5px;font-weight:600;transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.accordion .accordion-title:hover{background:rgba(255,255,255,.09);border-color:rgba(34,217,192,.35);color:#fff}
.accordion .accordion-title::before{position:absolute;right:22px;top:50%;left:auto;width:auto;height:auto;margin:0;transform:translateY(-50%);content:"\f054";font-family:"Font Awesome 6 Free";font-weight:900;font-size:14px;color:var(--glow-400);transition:transform var(--dur) var(--ease);display:block}
.accordion .accordion-item.is-active .accordion-title{background:rgba(34,217,192,.1);border-color:rgba(34,217,192,.5)}
.accordion .accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(90deg)}
.accordion .accordion-content{padding:16px 22px 4px;background:transparent;border:0;color:var(--text-2);font-size:15.5px;line-height:1.85}
.accordion .accordion-content p{margin:0}

/* ============ CTA ============ */
.cta-section{padding:96px 0 104px;background:var(--ink-950)}
.cta-panel{position:relative;border-radius:24px;overflow:hidden;padding:72px 56px;text-align:center;background-image:linear-gradient(180deg,rgba(5,8,15,.84),rgba(5,8,15,.68)),url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;border:1px solid var(--line);box-shadow:var(--shadow)}
.cta-panel h2{font-size:clamp(26px,3.2vw,38px);font-weight:650;line-height:1.3}
.cta-panel p{max-width:640px;margin:18px auto 0;color:var(--text-2);font-size:16.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-top:34px}
.cta-alt{margin-top:22px;font-size:14px;color:var(--text-3)}
.cta-alt i{color:var(--glow-400);margin-right:8px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);border-top:1px solid var(--line-soft);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{color:var(--text-2);font-size:14.5px;line-height:1.85;max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text);margin-bottom:20px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{color:var(--text-2);font-size:14.5px;display:inline-block;transition:color var(--dur) var(--ease),transform var(--dur) var(--ease)}
.footer-col a:hover{color:var(--glow-300);transform:translateX(2px)}
.footer-contact li{display:flex;gap:10px;color:var(--text-2);font-size:14.5px;align-items:flex-start}
.footer-contact i{color:var(--glow-400);margin-top:5px;font-size:13px}
.footer-bottom{margin-top:56px;padding:22px 0;border-top:1px solid var(--line-soft);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;color:var(--text-3);font-size:13.5px}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .section{padding:76px 0}
  .header-actions .btn{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-links{display:none}
  .split-row{grid-template-columns:1fr;gap:34px;padding:44px 0}
  .split-row.reverse .split-copy{order:1}
  .split-row.reverse .split-visual{order:2}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2){border-right:0}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line-soft)}
  .scene-grid,.faq-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .page-hero{padding:126px 0 76px}
  .glass-panel{backdrop-filter:none;-webkit-backdrop-filter:none;background:rgba(15,26,46,.85)}
  .site-header{backdrop-filter:none;-webkit-backdrop-filter:none;background:rgba(5,8,15,.94)}
}
@media (max-width:767px){
  body{font-size:15.5px;line-height:1.8}
  .grid-container{padding-left:16px;padding-right:16px}
  .section{padding:60px 0}
  .section-title{padding-left:16px;font-size:26px}
  .page-hero{padding:112px 0 62px}
  .page-hero p.lead{font-size:16px}
  .cta-panel{padding:52px 22px;border-radius:20px}
  .stat-item{padding:32px 16px}
  .quote-band{padding:76px 0}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;justify-content:flex-start;margin-top:40px}
  .cta-actions .btn{width:100%}
}
@media (max-width:520px){
  .page-hero h1{font-size:30px}
  .glass-panel{padding:22px}
  .stat-grid{grid-template-columns:1fr}
  .stat-item{border-right:0;border-bottom:1px solid var(--line-soft)}
  .stat-item:last-child{border-bottom:0}
  .nav-links a{padding:8px 10px;font-size:14px}
  .hero-chips{gap:8px}
  .chip{font-size:13px;padding:8px 14px}
}
@media (max-width:380px){
  .brand span:last-child{font-size:16px}
  .num-list li{gap:12px}
}

/* roulang page: article */
:root{
  --ink-950:#05080F;
  --ink-900:#0A111F;
  --ink-800:#0F1A2E;
  --brand-700:#12376E;
  --brand-500:#1F5AA8;
  --glow-400:#22D9C0;
  --glow-300:#6BF0DE;
  --warm-400:#F0A85C;
  --text:#E8EEF7;
  --text-2:#A9B6CC;
  --text-3:#6C7C96;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.22);
  --glass:rgba(255,255,255,.06);
  --glass-hi:rgba(255,255,255,.10);
  --r-card:18px;
  --r-panel:20px;
  --r-img:16px;
  --r-pill:999px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --shadow-glow:0 0 0 1px rgba(34,217,192,.55),0 8px 28px rgba(34,217,192,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sp-6:64px;
  --sp-7:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0;
  background:var(--ink-950);
  color:var(--text);
  font-family:"Inter","PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,"Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.005em;
  overflow-x:hidden;
  background-image:
    radial-gradient(900px 520px at 12% -6%,rgba(31,90,168,.28),transparent 62%),
    radial-gradient(760px 460px at 92% 4%,rgba(34,217,192,.14),transparent 60%);
  background-repeat:no-repeat;
}
body.nav-open{overflow:hidden;}
h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease),opacity .18s var(--ease);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
:focus-visible{outline:2px solid var(--glow-400);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(34,217,192,.32);color:#fff;}

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

/* ---------- Header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  height:72px;
  background:rgba(5,8,15,.72);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height .22s var(--ease),background .22s var(--ease);
}
.site-header.is-scrolled{height:64px;background:rgba(5,8,15,.94);}
.header-inner{display:flex;align-items:center;height:100%;gap:var(--sp-3);}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--text);flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--glow-400),var(--brand-500));
  color:#04201D;font-weight:800;font-size:16px;
  box-shadow:0 6px 18px rgba(34,217,192,.28);
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  position:relative;
  padding:9px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:var(--r-pill);
  white-space:nowrap;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.06);}
.nav-links a.is-active{color:var(--text);}
.nav-links a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--glow-400),var(--glow-300));
  box-shadow:0 0 12px rgba(34,217,192,.7);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);color:var(--text);place-items:center;
}
.nav-toggle:hover{background:rgba(255,255,255,.08);}
.nav-scrim{
  position:fixed;inset:0;background:rgba(5,8,15,.66);opacity:0;pointer-events:none;
  transition:opacity .2s var(--ease);z-index:88;
}
.nav-scrim.is-open{opacity:1;pointer-events:auto;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  border-radius:var(--r-pill);
  font-weight:600;font-size:15px;
  padding:13px 26px;
  border:1px solid transparent;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease);
  white-space:nowrap;
}
.btn-sm{padding:9px 20px;font-size:14px;}
.btn-primary{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--glow-400),var(--glow-300));
  color:#05201C;
  box-shadow:0 0 0 1px rgba(34,217,192,.55),0 8px 28px rgba(34,217,192,.28);
}
.btn-primary::after{
  content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.55),transparent);
  transition:left .3s var(--ease);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,217,192,.7),0 12px 36px rgba(34,217,192,.4);}
.btn-primary:hover::after{left:120%;}
.btn-primary:active{transform:translateY(-1px) scale(.995);}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{background:var(--glass-hi);border-color:rgba(255,255,255,.34);transform:translateY(-2px);}
.btn-text{color:var(--glow-300);padding:6px 4px;font-weight:600;gap:8px;}
.btn-text i{transition:transform .18s var(--ease);}
.btn-text:hover i{transform:translateX(4px);}

/* ---------- Badges / meta ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:6px;padding:4px 10px;font-size:12.5px;font-weight:600;letter-spacing:.02em;
  border:1px solid var(--line-strong);color:var(--text-2);
}
.badge-warm{border-color:rgba(240,168,92,.55);color:var(--warm-400);background:rgba(240,168,92,.08);}
.badge-glow{border-color:rgba(34,217,192,.5);color:var(--glow-300);background:rgba(34,217,192,.08);}

/* ---------- Article hero ---------- */
.article-hero{padding:132px 0 40px;position:relative;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:22px;letter-spacing:.02em;}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li+li::before{content:"/";color:var(--text-3);opacity:.6;}
.crumbs a:hover{color:var(--glow-300);}
.crumb-current{color:var(--text-2);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
@media (max-width:640px){.crumb-current{max-width:160px;}}
.article-hero h1{
  font-size:clamp(30px,4.6vw,48px);
  font-weight:700;
  line-height:1.22;
  letter-spacing:-.01em;
  max-width:900px;
  margin-bottom:20px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;color:var(--text-3);font-size:13.5px;letter-spacing:.02em;}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.7;}
.hero-figure{margin-top:34px;position:relative;border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);}
.hero-figure img{width:100%;aspect-ratio:21/9;object-fit:cover;}
.hero-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,.34),rgba(5,8,15,.68));}

.lede{
  margin-top:34px;
  padding-left:20px;
  border-left:3px solid var(--glow-400);
  font-size:19px;
  line-height:1.85;
  color:var(--text-2);
  max-width:860px;
}

/* ---------- Article layout ---------- */
.article-section{padding:56px 0 96px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:56px;align-items:start;}
.article-main{min-width:0;max-width:820px;}
.article-body{font-size:17px;line-height:1.9;color:var(--text-2);}
.article-body p{margin:0 0 1.25em;}
.article-body h2{
  position:relative;
  margin:2em 0 .85em;
  padding-left:20px;
  font-size:clamp(22px,2.6vw,30px);
  font-weight:650;
  line-height:1.34;
  color:var(--text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--glow-300),var(--glow-400));
  box-shadow:0 0 14px rgba(34,217,192,.55);
}
.article-body h3{margin:1.7em 0 .6em;font-size:20px;font-weight:600;color:var(--text);line-height:1.45;}
.article-body h4{margin:1.4em 0 .5em;font-size:17px;font-weight:600;color:var(--text);}
.article-body ul,.article-body ol{margin:0 0 1.3em;}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:.6em;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;border-radius:50%;
  background:var(--glow-400);box-shadow:0 0 10px rgba(34,217,192,.65);
}
.article-body ol{counter-reset:li;padding-left:0;}
.article-body ol li{position:relative;padding-left:36px;margin-bottom:.7em;counter-increment:li;}
.article-body ol li::before{
  content:counter(li);
  position:absolute;left:0;top:.2em;width:24px;height:24px;border-radius:7px;
  display:grid;place-items:center;font-size:12px;font-weight:700;color:#04201D;
  background:linear-gradient(135deg,var(--glow-300),var(--glow-400));
}
.article-body blockquote{
  margin:1.5em 0;padding:22px 26px;
  background:var(--glass);
  border-left:3px solid var(--glow-400);
  border-radius:14px;
  color:var(--text);
  font-size:16.5px;
}
.article-body img{border-radius:var(--r-img);margin:1.5em 0;width:100%;height:auto;}
.article-body a{color:var(--glow-300);border-bottom:1px solid rgba(107,240,222,.35);}
.article-body a:hover{color:var(--glow-400);border-bottom-color:var(--glow-400);}
.article-body strong{color:var(--text);font-weight:650;}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px;border-radius:12px;overflow:hidden;}
.article-body th{background:rgba(31,90,168,.28);color:var(--text);font-weight:600;text-align:left;padding:13px 15px;}
.article-body td{padding:13px 15px;border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(odd){background:rgba(255,255,255,.04);}
.article-body code{background:rgba(34,217,192,.12);color:var(--glow-300);padding:2px 7px;border-radius:6px;font-size:14.5px;}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.4em 0;}

/* ---------- TOC ---------- */
.toc-wrap{position:sticky;top:96px;}
.toc-card{
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 20px;
  box-shadow:var(--shadow);
}
.toc-card::before{
  content:"";display:block;height:1px;margin:-22px -20px 18px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);
}
.toc-title{font-size:14px;font-weight:600;color:var(--text);letter-spacing:.06em;margin-bottom:12px;display:flex;align-items:center;gap:8px;}
.toc-title i{color:var(--glow-400);}
.toc-list a{
  display:block;padding:8px 10px;border-left:2px solid transparent;
  font-size:14px;color:var(--text-3);line-height:1.55;border-radius:0 8px 8px 0;
}
.toc-list a:hover{color:var(--text);background:rgba(255,255,255,.05);}
.toc-list a.is-current{color:var(--glow-400);border-left-color:var(--glow-400);background:rgba(34,217,192,.08);}
.toc-tip{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);line-height:1.7;}
.toc-cta{margin-top:14px;width:100%;}

.toc-mobile{display:none;margin-bottom:24px;}
.toc-mobile summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 18px;border-radius:14px;
  background:var(--glass);border:1px solid var(--line-strong);
  font-size:15px;font-weight:600;color:var(--text);
}
.toc-mobile summary::-webkit-details-marker{display:none;}
.toc-mobile[open] summary i{transform:rotate(90deg);}
.toc-mobile summary i{transition:transform .2s var(--ease);color:var(--glow-400);}
.toc-mobile .toc-list{padding:10px 6px 4px;}

/* ---------- Empty state ---------- */
.empty-state{
  padding:64px 28px;text-align:center;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-panel);
}
.empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:20px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(34,217,192,.22),rgba(31,90,168,.28));
  color:var(--glow-300);font-size:24px;border:1px solid rgba(34,217,192,.35);
}
.empty-state h3{font-size:20px;font-weight:650;color:var(--text);margin-bottom:10px;}
.empty-state p{color:var(--text-2);font-size:15.5px;margin-bottom:22px;}

/* ---------- End actions ---------- */
.article-end{
  margin-top:44px;padding-top:32px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;
}

/* ---------- Related ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-head h2{
  font-size:clamp(24px,3.2vw,34px);font-weight:650;line-height:1.3;color:var(--text);
  position:relative;padding-top:14px;
}
.section-head h2::before{
  content:"";position:absolute;top:0;left:0;width:44px;height:3px;border-radius:3px;
  background:linear-gradient(90deg,var(--glow-400),transparent);
}
.section-head p{margin-top:10px;color:var(--text-2);font-size:15.5px;max-width:640px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.related-card{
  display:flex;gap:16px;align-items:center;
  padding:16px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  transition:transform .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.related-card:hover{transform:translateY(-2px);border-color:rgba(34,217,192,.4);background:var(--glass-hi);}
.related-thumb{width:78px;height:78px;flex:0 0 auto;border-radius:14px;overflow:hidden;border:1px solid var(--line);}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.related-card:hover .related-thumb img{transform:scale(1.05);}
.related-body h3{font-size:16px;font-weight:600;color:var(--text);line-height:1.5;margin-bottom:6px;}
.related-body p{font-size:13.5px;color:var(--text-3);line-height:1.6;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:0.8fr 1.2fr;gap:56px;align-items:start;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:background .2s var(--ease),border-color .2s var(--ease);
}
.faq-item.is-open{background:rgba(31,90,168,.18);border-color:rgba(34,217,192,.36);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
}
.faq-q i{color:var(--glow-400);transition:transform .2s var(--ease);flex:0 0 auto;}
.faq-item.is-open .faq-q i{transform:rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease);}
.faq-a p{padding:0 22px 20px;color:var(--text-2);font-size:15px;line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;border-radius:var(--r-panel);overflow:hidden;
  border:1px solid var(--line-strong);
  padding:64px 48px;
  background-image:linear-gradient(180deg,rgba(5,8,15,.88),rgba(5,8,15,.42)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.cta-band h2{font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.3;margin-bottom:14px;max-width:720px;}
.cta-band p{color:var(--text-2);font-size:16px;max-width:660px;margin-bottom:28px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.cta-note{margin-top:22px;font-size:13.5px;color:var(--text-3);display:flex;align-items:center;gap:10px;}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);background:rgba(10,17,31,.7);margin-top:40px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 44px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{color:var(--text-3);font-size:14.5px;line-height:1.85;max-width:320px;}
.footer-col h4{font-size:15px;font-weight:650;color:var(--text);margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul li a{color:var(--text-3);font-size:14.5px;display:inline-block;}
.footer-col ul li a:hover{color:var(--glow-300);transform:translateX(2px);}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;color:var(--text-3);font-size:14.5px;line-height:1.7;}
.footer-contact li i{color:var(--glow-400);margin-top:6px;font-size:13px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid var(--line);padding:22px 0 30px;
  color:var(--text-3);font-size:13.5px;
}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .site-header{height:64px;}
  .nav-toggle{display:grid;}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:88%;max-width:340px;
    background:rgba(10,17,31,.98);
    -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:6px;
    padding:96px 24px 32px;
    transform:translateX(102%);
    transition:transform .26s var(--ease);
    z-index:92;margin-left:0;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-links a{padding:14px 14px;font-size:16px;border-radius:12px;}
  .nav-links a.is-active::after{left:14px;right:auto;width:26px;}
  .article-layout{grid-template-columns:1fr;gap:32px;}
  .toc-wrap{display:none;}
  .toc-mobile{display:block;}
  .article-main{max-width:none;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
  .section{padding:64px 0;}
  .cta-band{padding:48px 28px;}
}
@media (max-width:767px){
  .grid-container{padding:0 16px;}
  .article-hero{padding:110px 0 28px;}
  .article-body{font-size:16.5px;}
  .lede{font-size:17px;padding-left:16px;}
  .hero-figure img{aspect-ratio:16/9;}
  .article-section{padding:40px 0 72px;}
  .section-head{margin-bottom:26px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-band{padding:38px 20px;}
  .btn{padding:12px 22px;font-size:14.5px;}
}
@media (max-width:519px){
  .article-hero h1{font-size:28px;}
  .article-meta{gap:8px;font-size:13px;}
  .empty-state{padding:44px 18px;}
  .related-card{flex-direction:row;}
  .related-thumb{width:64px;height:64px;}
}