/* roulang page: index */
:root{
  --bg:#070A0C;
  --bg-alt:#0B1014;
  --card:#111820;
  --card-hover:#0E141A;
  --footer-bg:#05080A;
  --lime:#A6FF3D;
  --lime-hover:#C4FF74;
  --lime-12:rgba(166,255,61,.12);
  --lime-40:rgba(166,255,61,.4);
  --orange:#FF5C39;
  --violet:#7C5CFF;
  --text:#E9F1F2;
  --text-2:#9BAAB2;
  --text-3:#6B7A83;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --success:#2BE38A;
  --warning:#FFC53D;
  --danger:#FF5A5A;
  --info:#5CC8FF;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow:0 8px 24px rgba(0,0,0,.45);
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,textarea{font-family:inherit;font-size:15px;}
h1,h2,h3,h4,h5{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--lime);color:#070A0C;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:900;
  transition:background .28s ease,border-color .28s ease,backdrop-filter .28s ease;
  border-bottom:1px solid transparent;
  background:transparent;
}
.site-header.is-scrolled{
  background:rgba(11,16,20,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.progress-track{position:absolute;left:0;right:0;top:0;height:2px;background:transparent;}
.progress-bar{display:block;height:2px;width:0;background:linear-gradient(90deg,var(--lime),var(--lime-hover));transition:width .1s linear;}
.header-inner{
  display:flex;align-items:center;gap:24px;
  height:72px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:28px;height:28px;border-radius:9px;
  background:linear-gradient(140deg,var(--lime) 0%,#6FD414 55%,var(--violet) 140%);
  position:relative;flex-shrink:0;
}
.logo-mark::after{
  content:"";position:absolute;inset:8px;border-radius:3px;
  background:#070A0C;
}
.logo-text{font-size:18px;font-weight:800;letter-spacing:.02em;line-height:1;}
.logo-text i{font-style:normal;font-size:11px;font-weight:500;color:var(--text-3);margin-left:6px;letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1;}
.nav-link{
  position:relative;
  padding:10px 12px;font-size:14.5px;color:var(--text-2);
  border-radius:8px;transition:color .2s ease,background .2s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--lime);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link.is-active{color:var(--lime);}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  color:var(--text-2);border:1px solid transparent;transition:.2s ease;
}
.icon-btn:hover{color:var(--lime);border-color:var(--line);background:rgba(255,255,255,.04);}
.hamburger{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);align-items:center;justify-content:center;
}
.hamburger span{position:relative;display:block;width:18px;height:2px;background:var(--text);border-radius:2px;}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;transition:.22s ease;
}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:600;letter-spacing:.01em;
  transition:transform .18s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn--sm{height:44px;padding:0 20px;font-size:14.5px;}
.btn--lg{height:56px;padding:0 32px;font-size:16.5px;}
.btn--primary{background:var(--lime);color:#070A0C;}
.btn--primary:hover{background:var(--lime-hover);transform:translateY(-2px);box-shadow:0 10px 26px rgba(166,255,61,.22);}
.btn--primary:active{transform:translateY(0);}
.btn--outline{border:1px solid var(--lime-40);color:var(--lime);background:transparent;}
.btn--outline:hover{background:var(--lime-12);border-color:var(--lime);transform:translateY(-2px);}
.btn--ghost{color:var(--text-2);padding:0 6px;height:auto;border-radius:0;border-bottom:1px solid transparent;}
.btn--ghost:hover{color:var(--lime);border-bottom-color:var(--lime);}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border:1px solid var(--line-strong);border-radius:var(--radius-pill);
  font-size:12px;color:var(--text-2);letter-spacing:.04em;
}
.badge--lime{border-color:var(--lime-40);color:var(--lime);background:var(--lime-12);}
.badge--hot{border-color:rgba(255,92,57,.45);color:var(--orange);background:rgba(255,92,57,.1);}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:8px;
  background:rgba(255,255,255,.05);font-size:13px;color:var(--text-2);
}
.tag:hover{color:var(--text);background:rgba(255,255,255,.09);}

/* ============ Hero ============ */
.hero{
  position:relative;
  min-height:min(92vh,860px);
  display:flex;align-items:center;
  padding:140px 0 72px;
  overflow:hidden;
  background:url("/assets/images/backpic/back-1.png") center/cover no-repeat,#070A0C;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,10,12,.96) 0%,rgba(7,10,12,.88) 42%,rgba(7,10,12,.52) 72%,rgba(7,10,12,.72) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.7;
}
.hero .scanline{
  position:absolute;left:0;right:0;top:0;height:120px;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(166,255,61,.07),transparent);
  animation:scan 7.5s linear infinite;
}
@keyframes scan{
  0%{transform:translateY(-140px);}
  100%{transform:translateY(900px);}
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;width:100%;}
.hero-copy{max-width:640px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  height:32px;padding:0 14px;border-radius:var(--radius-pill);
  border:1px solid var(--lime-40);background:var(--lime-12);
  font-size:13px;color:var(--lime);letter-spacing:.04em;margin-bottom:24px;
}
.hero-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 4px rgba(166,255,61,.18);}
.hero h1{
  font-size:clamp(30px,4.4vw,52px);
  font-weight:800;line-height:1.2;letter-spacing:-.02em;
  margin-bottom:22px;
}
.hero h1 em{font-style:normal;color:var(--lime);}
.hero-sub{font-size:17px;color:var(--text-2);line-height:1.85;max-width:560px;margin-bottom:34px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,auto);gap:36px;
  padding-top:28px;border-top:1px solid var(--line);justify-content:start;
}
.stat-num{font-size:26px;font-weight:800;color:var(--lime);line-height:1.2;}
.stat-label{font-size:13px;color:var(--text-3);margin-top:4px;letter-spacing:.02em;}
.hero-visual{position:relative;}
.hero-visual .frame{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  background:#111820;
  aspect-ratio:16/11;
}
.hero-visual .frame img{width:100%;height:100%;object-fit:cover;}
.hero-visual .panel{
  position:absolute;left:-22px;bottom:-26px;
  width:230px;padding:18px 20px;border-radius:14px;
  background:#0E141A;border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.hero-visual .panel-title{font-size:12.5px;color:var(--text-3);letter-spacing:.08em;}
.hero-visual .panel-value{font-size:24px;font-weight:800;color:var(--text);margin-top:6px;}
.hero-visual .panel-bar{height:6px;border-radius:99px;background:rgba(255,255,255,.08);margin-top:12px;overflow:hidden;}
.hero-visual .panel-bar span{display:block;height:100%;width:76%;background:var(--lime);border-radius:99px;}

/* ============ 通用板块 ============ */
.section{padding:104px 0;}
.section--alt{background:var(--bg-alt);}
.section-head{max-width:720px;margin-bottom:56px;}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--lime);
  letter-spacing:.14em;text-transform:uppercase;margin-bottom:16px;
}
.section-head .kicker::before{content:"";width:22px;height:2px;background:var(--lime);border-radius:2px;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:800;margin-bottom:16px;letter-spacing:-.01em;}
.section-head p{color:var(--text-2);font-size:16px;}
.section-head--row{max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:32px;}

/* ============ 卖点：交替图文 ============ */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:44px 0;border-top:1px solid var(--line);
}
.feature-row:first-of-type{border-top:none;padding-top:0;}
.feature-row--flip .feature-media{order:2;}
.feature-num{
  font-size:14px;font-weight:800;color:var(--lime);letter-spacing:.16em;margin-bottom:14px;
}
.feature-row h3{font-size:22px;font-weight:700;margin-bottom:14px;}
.feature-row p{color:var(--text-2);font-size:15.5px;line-height:1.85;margin-bottom:20px;}
.feature-list li{
  display:flex;gap:12px;padding:11px 0;font-size:14.5px;color:var(--text-2);
  border-bottom:1px dashed var(--line);
}
.feature-list li:last-child{border-bottom:none;}
.feature-list .idx{color:var(--lime);font-weight:700;font-variant-numeric:tabular-nums;flex-shrink:0;}
.feature-media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:#111820;aspect-ratio:16/11;
}
.feature-media::after{
  content:"";position:absolute;top:0;left:0;width:64px;height:2px;background:var(--lime);
}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.feature-row:hover .feature-media img{transform:scale(1.04);}

/* ============ 功能演示 ============ */
.demo-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:start;}
.demo-media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line-strong);background:#111820;aspect-ratio:16/9;
}
.demo-media img{width:100%;height:100%;object-fit:cover;}
.demo-media .demo-tip{
  position:absolute;left:20px;bottom:20px;
  padding:10px 16px;border-radius:var(--radius-pill);
  background:rgba(7,10,12,.78);border:1px solid var(--line-strong);
  font-size:13px;color:var(--text-2);backdrop-filter:blur(6px);
}
.demo-points li{
  display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line);
}
.demo-points li:first-child{padding-top:0;}
.demo-points li:last-child{border-bottom:none;}
.point-icon{
  width:40px;height:40px;border-radius:10px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--lime-12);border:1px solid var(--lime-40);color:var(--lime);
}
.demo-points h4{font-size:16.5px;margin-bottom:6px;}
.demo-points p{font-size:14.5px;color:var(--text-2);line-height:1.8;}

/* ============ 数据证据 ============ */
.proof-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding:36px;border-radius:var(--radius-card);
  background:var(--card);border:1px solid var(--line);
  margin-bottom:40px;
}
.proof-item .num{font-size:34px;font-weight:800;color:var(--lime);line-height:1.1;}
.proof-item .lbl{font-size:13.5px;color:var(--text-3);margin-top:8px;}
.proof-quotes{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.quote-card{
  position:relative;padding:28px;border-radius:var(--radius-card);
  background:var(--card);border:1px solid var(--line);
  transition:border-color .25s ease,transform .25s ease;
}
.quote-card::before{
  content:"";position:absolute;top:0;left:28px;width:56px;height:2px;background:var(--lime);
}
.quote-card:hover{border-color:var(--lime-40);transform:translateY(-4px);}
.quote-card blockquote{margin:0 0 18px;font-size:15.5px;line-height:1.9;color:var(--text);}
.quote-meta{font-size:13px;color:var(--text-3);display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 内容动态（CMS） ============ */
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.news-card{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  background:var(--card);border:1px solid var(--line);
  transition:border-color .25s ease,transform .25s ease;
  display:flex;flex-direction:column;
}
.news-card::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:2px;background:var(--lime);
  transform:scaleX(0);transform-origin:left;transition:transform .3s ease;
}
.news-card:hover{border-color:var(--lime-40);transform:translateY(-4px);}
.news-card:hover::before{transform:scaleX(1);}
.news-card--featured{grid-column:span 2;}
.news-card__link{display:flex;flex-direction:column;height:100%;}
.news-card__media{
  position:relative;width:100%;aspect-ratio:16/9;background:#111820;overflow:hidden;
}
.news-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.news-card:hover .news-card__media img{transform:scale(1.05);}
.news-card__body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-card__meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.news-card__time{font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.news-card__title{
  font-size:16.5px;font-weight:700;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card--featured .news-card__title{font-size:19px;}
.news-card__desc{
  font-size:14px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__more{margin-top:auto;font-size:13.5px;color:var(--lime);display:inline-flex;align-items:center;gap:6px;}
.news-empty{
  grid-column:1/-1;
  border:1px dashed var(--line-strong);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;background:rgba(255,255,255,.015);
}
.news-empty .empty-icon{
  width:52px;height:52px;margin:0 auto 18px;border-radius:14px;
  border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;color:var(--text-3);
}
.news-empty p{color:var(--text-2);font-size:15px;margin-bottom:16px;}

/* ============ 价格方案 ============ */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.price-card{
  position:relative;display:flex;flex-direction:column;
  padding:32px 28px;border-radius:var(--radius-card);
  background:var(--card);border:1px solid var(--line);
  transition:border-color .25s ease,transform .25s ease;
}
.price-card:hover{border-color:var(--lime-40);transform:translateY(-4px);}
.price-card--best{border-color:var(--lime);box-shadow:0 0 0 1px var(--lime-40),0 8px 24px rgba(0,0,0,.45);}
.price-card--best::before{
  content:"";position:absolute;top:0;left:28px;width:64px;height:2px;background:var(--lime);
}
.price-card__badge{position:absolute;top:-13px;right:24px;}
.price-card h3{font-size:19px;margin-bottom:10px;}
.price-card .price-desc{font-size:14px;color:var(--text-2);line-height:1.8;min-height:52px;}
.price-value{display:flex;align-items:baseline;gap:8px;margin:22px 0 24px;}
.price-value .amount{font-size:38px;font-weight:800;color:var(--lime);line-height:1;font-variant-numeric:tabular-nums;}
.price-value .unit{font-size:14px;color:var(--text-3);}
.price-list{display:flex;flex-direction:column;gap:2px;margin-bottom:28px;flex:1;}
.price-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:10px 0;font-size:14.5px;color:var(--text-2);border-bottom:1px dashed var(--line);
}
.price-list li:last-child{border-bottom:none;}
.price-list .tick{color:var(--lime);flex-shrink:0;font-weight:700;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px;text-align:left;font-size:17px;font-weight:700;color:var(--text);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--lime);}
.faq-icon{
  position:relative;width:22px;height:22px;flex-shrink:0;
  border:1px solid var(--line-strong);border-radius:6px;
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--lime);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:2px;}
.faq-icon::after{width:2px;height:10px;transition:opacity .2s ease;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--lime-12);border-color:var(--lime-40);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.faq-a p{padding:0 4px 24px;font-size:15px;color:var(--text-2);line-height:1.9;max-width:780px;}

/* ============ 底部 CTA ============ */
.cta-section{padding:0 0 104px;}
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:22px;border:1px solid var(--line-strong);
  background:
    radial-gradient(680px 300px at 88% 12%,rgba(166,255,61,.14),transparent 68%),
    linear-gradient(120deg,#0B1014 0%,#0E141A 60%,#0B1014 100%);
  padding:64px 56px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
}
.cta-panel::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;
  border-radius:40px;transform:rotate(45deg);
  border:1px solid rgba(166,255,61,.22);
}
.cta-copy h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px;}
.cta-copy p{color:var(--text-2);font-size:15.5px;max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;position:relative;z-index:2;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:28px;bottom:32px;z-index:800;
  display:flex;align-items:center;gap:12px;
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .3s ease,transform .3s ease;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.back-top{
  width:52px;height:52px;border-radius:50%;
  background:#111820;border:1px solid var(--line-strong);color:var(--text-2);
  display:flex;align-items:center;justify-content:center;
  transition:.2s ease;
}
.back-top:hover{color:var(--lime);border-color:var(--lime-40);transform:translateY(-3px);}
.mobile-cta-bar{display:none;}

/* ============ 抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:950;
  background:rgba(5,8,10,.6);backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer.is-open{opacity:1;visibility:visible;}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(88vw,360px);
  background:#0B1014;border-left:1px solid var(--line);
  padding:24px 24px 40px;overflow-y:auto;
  transform:translateX(100%);transition:transform .3s cubic-bezier(.4,.1,.2,1);
  display:flex;flex-direction:column;gap:8px;
}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--text-2);
}
.drawer-close:hover{color:var(--lime);border-color:var(--lime-40);}
.drawer-link{
  display:block;padding:14px 14px;border-radius:10px;font-size:16px;color:var(--text-2);
  border:1px solid transparent;transition:.2s ease;
}
.drawer-link:hover,.drawer-link.is-active{color:var(--lime);background:var(--lime-12);border-color:var(--lime-40);}
.drawer-divider{height:1px;background:var(--line);margin:14px 0;}
.drawer-label{font-size:12px;color:var(--text-3);letter-spacing:.14em;padding:0 14px;margin-bottom:8px;}
.drawer .btn{width:100%;margin-top:18px;}
body.no-scroll{overflow:hidden;}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:56px;}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.9;max-width:320px;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:18px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:var(--text-3);transition:color .2s ease;}
.footer-col a:hover{color:var(--lime);}
.footer-contact li{font-size:14px;color:var(--text-3);display:flex;gap:10px;}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom a:hover{color:var(--lime);}

/* ============ 骨架 / 空态 ============ */
.skeleton{background:linear-gradient(90deg,#111820 25%,#161f28 37%,#111820 63%);background-size:400% 100%;animation:sk 1.4s ease infinite;}
@keyframes sk{0%{background-position:100% 50%;}100%{background-position:0 50%;}}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .hero-inner{gap:40px;}
  .hero-stats{gap:28px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .main-nav{display:none;}
  .hamburger{display:flex;}
  .header-inner{height:68px;}
  .hero{padding:120px 0 64px;min-height:auto;}
  .hero-inner{grid-template-columns:1fr;gap:44px;}
  .hero-visual .panel{left:auto;right:16px;bottom:-20px;width:210px;}
  .section{padding:80px 0;}
  .feature-row{grid-template-columns:1fr;gap:32px;}
  .feature-row--flip .feature-media{order:0;}
  .demo-grid{grid-template-columns:1fr;gap:32px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .news-card--featured{grid-column:span 2;}
  .pricing-grid{grid-template-columns:1fr;}
  .proof-bar{grid-template-columns:repeat(2,1fr);gap:28px;}
  .proof-quotes{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-panel{padding:48px 36px;flex-direction:column;align-items:flex-start;}
}
@media (max-width:768px){
  body{font-size:15.5px;}
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .section-head{margin-bottom:36px;}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:16px;}
  .hero{padding:104px 0 56px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:22px;}
  .stat-num{font-size:22px;}
  .hero-visual .panel{position:static;width:100%;margin-top:18px;}
  .news-grid{grid-template-columns:1fr;}
  .news-card--featured{grid-column:span 1;}
  .proof-bar{grid-template-columns:1fr 1fr;padding:26px 22px;}
  .proof-item .num{font-size:26px;}
  .quote-card{padding:22px;}
  .cta-section{padding-bottom:0;}
  .cta-panel{padding:36px 22px;border-radius:18px;}
  .cta-actions{width:100%;flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px;}
  .site-footer{padding-top:56px;}
  .footer-bottom{padding-bottom:110px;flex-direction:column;align-items:flex-start;}
  .float-cta{display:none;}
  .mobile-cta-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:850;
    height:56px;background:rgba(11,16,20,.96);border-top:1px solid var(--line);
    backdrop-filter:blur(10px);opacity:0;transform:translateY(100%);
    transition:opacity .3s ease,transform .3s ease;pointer-events:none;
  }
  .mobile-cta-bar.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
  .mobile-cta-bar .btn{flex:1;height:56px;border-radius:0;font-size:16px;}
  .mobile-cta-bar .back-top{
    width:56px;height:56px;border-radius:0;border:none;border-left:1px solid var(--line);
  }
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .logo-text{font-size:16px;}
  .logo-text i{display:none;}
  .hero h1{font-size:27px;}
  .price-value .amount{font-size:32px;}
  .faq-q{font-size:16px;padding:20px 2px;}
  .news-card__body{padding:16px 18px 20px;}
}

/* roulang page: article */
/* ============ 设计变量 ============ */
:root{
  --brand:#A6FF3D;
  --brand-hover:#C4FF74;
  --brand-soft:rgba(166,255,61,.12);
  --brand-line:rgba(166,255,61,.42);
  --accent:#FF5C39;
  --violet:#7C5CFF;
  --bg:#070A0C;
  --bg-2:#0B1014;
  --bg-3:#0E141A;
  --card:#111820;
  --footer-bg:#05080A;
  --text:#E9F1F2;
  --body:#C6D3D6;
  --text-2:#9BAAB2;
  --text-3:#6B7A83;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.16);
  --ok:#2BE38A;
  --warn:#FFC53D;
  --err:#FF5A5A;
  --info:#5CC8FF;
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
  --shadow:0 8px 24px rgba(0,0,0,.45);
  --max:1200px;
  --gap:24px;
}

/* ============ Reset / Base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease}
img{display:block;max-width:100%;border:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand);color:#070A0C}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section--tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:2px;color:var(--brand);text-transform:uppercase;margin-bottom:14px}
.section-head .eyebrow::before{content:"";width:22px;height:1px;background:var(--brand)}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:800;letter-spacing:-.6px}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px}

/* ============ 头部与导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(7,10,12,.35);
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,backdrop-filter .28s ease;
}
.site-header.is-scrolled{
  background:rgba(11,16,20,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.progress-bar{
  position:absolute;left:0;top:0;height:2px;width:0;
  background:linear-gradient(90deg,var(--brand),var(--info));
  transition:width .1s linear;
  z-index:5;
}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}

.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  position:relative;width:30px;height:30px;border-radius:9px;
  background:linear-gradient(135deg,var(--brand),var(--info));
  box-shadow:0 0 0 1px rgba(166,255,61,.25);
}
.logo-mark::after{content:"";position:absolute;inset:9px;border-radius:3px;background:var(--bg)}
.logo-text{font-size:18px;font-weight:800;letter-spacing:.4px;white-space:nowrap}
.logo-text i{font-style:normal;font-size:12px;font-weight:600;color:var(--brand);margin-left:4px;letter-spacing:1px}

.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;
  padding:10px 13px;
  font-size:15px;
  color:var(--text-2);
  border-radius:10px;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;
  border-radius:2px;background:var(--brand);transform:scaleX(0);
  transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{transform:scaleX(1)}

.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:8px}
.icon-btn{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-2);transition:all .2s ease;
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand-line);background:var(--brand-soft)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  white-space:nowrap;cursor:pointer;
}
.btn-primary{background:var(--brand);color:#070A0C}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-2px);box-shadow:0 8px 20px rgba(166,255,61,.18)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-outline{border-color:var(--brand-line);color:var(--brand);background:transparent}
.btn-outline:hover{background:var(--brand-soft);transform:translateY(-2px)}
.btn-ghost{color:var(--text-2);padding:0 8px;height:auto}
.btn-ghost:hover{color:var(--brand)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ============ 汉堡与抽屉 ============ */
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);align-items:center;justify-content:center;
  flex-direction:column;gap:4px;transition:border-color .2s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .2s ease,opacity .2s ease}
.nav-toggle:hover{border-color:var(--brand-line)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.drawer-backdrop{
  position:fixed;inset:0;background:rgba(2,4,6,.7);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:190;
}
.drawer-backdrop.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);
  background:var(--bg-2);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  z-index:200;padding:24px;overflow-y:auto;
  display:flex;flex-direction:column;gap:6px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-close{
  align-self:flex-end;width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);color:var(--text-2);font-size:20px;line-height:1;
  display:flex;align-items:center;justify-content:center;margin-bottom:12px;
}
.drawer-close:hover{color:var(--brand);border-color:var(--brand-line)}
.drawer-title{font-size:12px;letter-spacing:2px;color:var(--text-3);margin:16px 0 8px}
.drawer a.drawer-link{padding:12px 14px;border-radius:12px;color:var(--text-2);font-size:15px;border:1px solid transparent}
.drawer a.drawer-link:hover{background:var(--bg-3);color:var(--text);border-color:var(--line)}
.drawer a.drawer-link.is-active{color:var(--brand)}
.drawer .btn{margin-top:20px}

/* ============ 面包屑 ============ */
.breadcrumb{border-bottom:1px solid var(--line);background:var(--bg-2)}
.breadcrumb ol{display:flex;align-items:center;gap:10px;height:52px;font-size:13.5px;color:var(--text-3);overflow:hidden}
.breadcrumb li{display:flex;align-items:center;gap:10px;min-width:0}
.breadcrumb li+li::before{content:"/";color:var(--text-3);opacity:.6}
.breadcrumb a{color:var(--text-2);white-space:nowrap}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current{
  color:var(--text);max-width:420px;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap;
}

/* ============ 文章主体 ============ */
.article-hero{
  position:relative;padding:64px 0 48px;
  background:
    radial-gradient(900px 340px at 12% -10%,rgba(166,255,61,.10),transparent 70%),
    linear-gradient(180deg,var(--bg-2),var(--bg));
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 85%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 85%);
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:1}
.article-meta-top{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  border:1px solid var(--line-2);color:var(--text-2);background:rgba(255,255,255,.03);
}
.badge--brand{border-color:var(--brand-line);color:var(--brand);background:var(--brand-soft)}
.badge--hot{border-color:rgba(255,92,57,.5);color:var(--accent);background:rgba(255,92,57,.1)}
.article-title{
  font-size:clamp(26px,3.6vw,42px);
  font-weight:800;letter-spacing:-1px;line-height:1.28;max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px;
  margin-top:20px;font-size:14px;color:var(--text-3);
}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta .dot{width:5px;height:5px;border-radius:50%;background:var(--brand);opacity:.8}

.article-layout{padding:56px 0 96px}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:start}
.article-main{min-width:0;max-width:820px}

.figure{margin:0 0 36px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:var(--card)}
.figure img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--card)}
.figure figcaption{padding:10px 16px;font-size:13px;color:var(--text-3);border-top:1px solid var(--line)}

.article-body{color:var(--body);font-size:16.5px;line-height:1.9;word-wrap:break-word}
.article-body > * + *{margin-top:1.2em}
.article-body p{margin:0}
.article-body h2{
  margin:2em 0 .8em;font-size:clamp(20px,2.2vw,26px);font-weight:800;
  color:var(--text);letter-spacing:-.4px;line-height:1.35;
}
.article-body h3{margin:1.6em 0 .7em;font-size:19px;font-weight:700;color:var(--text)}
.article-body h4{margin:1.4em 0 .6em;font-size:17px;font-weight:700;color:var(--text)}
.article-body ul,.article-body ol{margin:1.1em 0;padding-left:0}
.article-body li{position:relative;padding-left:22px;margin:.55em 0}
.article-body li::before{
  content:"";position:absolute;left:3px;top:.72em;width:7px;height:7px;
  border-radius:2px;background:var(--brand);opacity:.85;
}
.article-body ol{counter-reset:olc}
.article-body ol li{padding-left:30px}
.article-body ol li::before{
  counter-increment:olc;content:counter(olc);
  width:auto;height:auto;background:none;opacity:1;
  left:0;top:0;color:var(--brand);font-weight:700;font-size:14px;
}
.article-body a{color:var(--brand);border-bottom:1px solid var(--brand-line)}
.article-body a:hover{color:var(--brand-hover)}
.article-body strong{color:var(--text);font-weight:700}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px 16px 22px;
  border-left:3px solid var(--brand);
  background:var(--bg-3);border-radius:0 12px 12px 0;
  color:var(--text-2);font-style:normal;
}
.article-body img{border-radius:var(--r-img);margin:1.4em 0;border:1px solid var(--line)}
.article-body figure{margin:1.4em 0}
.article-body figcaption{margin-top:8px;font-size:13px;color:var(--text-3);text-align:center}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
.article-body code{
  background:var(--bg-3);border:1px solid var(--line);border-radius:6px;
  padding:2px 6px;font-size:14px;color:var(--brand);
}
.article-body pre{
  background:var(--bg-3);border:1px solid var(--line);border-radius:12px;
  padding:16px;overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body pre code{background:none;border:0;padding:0;color:var(--body)}
.article-body .table-scroll,.article-body table{width:100%}
.article-body table{border-collapse:collapse;font-size:15px;display:block;overflow-x:auto;white-space:nowrap}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--bg-3);color:var(--text);font-weight:700}

.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  font-size:13px;color:var(--text-2);border:1px solid var(--line);background:var(--bg-2);
  transition:all .2s ease;
}
.tag:hover{color:var(--brand);border-color:var(--brand-line);background:var(--brand-soft)}

.share-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:24px;padding:20px;border-radius:var(--r-card);
  background:var(--bg-2);border:1px solid var(--line);
}
.share-row .share-label{font-size:14px;color:var(--text-3);margin-right:auto}

/* 空状态 */
.empty-state{
  border:1px dashed var(--line-2);border-radius:var(--r-card);
  padding:56px 28px;text-align:center;background:var(--bg-2);
}
.empty-state .icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:16px;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  color:var(--brand);font-size:22px;background:var(--brand-soft);
}
.empty-state h3{font-size:19px;font-weight:700;color:var(--text);margin-bottom:10px}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:22px}

/* 侧栏 */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;position:relative;overflow:hidden;
}
.side-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand),transparent);
}
.side-card h3{font-size:15px;font-weight:700;color:var(--text);margin-bottom:14px;letter-spacing:.2px}
.side-list li+li{border-top:1px solid var(--line)}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 10px;border-radius:10px;font-size:14.5px;color:var(--text-2);
  transition:background .2s ease,color .2s ease;
}
.side-list a:hover{background:var(--bg-3);color:var(--brand)}
.side-list a span.arrow{color:var(--text-3);font-size:13px}
.side-note{font-size:14px;color:var(--text-2);line-height:1.8}
.side-note strong{color:var(--brand);font-weight:700}
.side-cta{display:flex;flex-direction:column;gap:10px;margin-top:16px}

/* 相关推荐 */
.related{padding:0 0 96px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.card{
  position:relative;display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .28s ease;z-index:2;
}
.card:hover{transform:translateY(-4px);border-color:var(--brand-line);box-shadow:var(--shadow)}
.card:hover::before{transform:scaleX(1)}
.card-media{position:relative;background:var(--bg-3);overflow:hidden}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;font-weight:700;color:var(--text);line-height:1.5}
.card-body p{font-size:14.5px;color:var(--text-2);line-height:1.75}
.card-link{margin-top:auto;font-size:14px;color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.card-link::after{content:"→";transition:transform .2s ease}
.card:hover .card-link::after{transform:translateX(4px)}

.back-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:40px}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#0B1014 0%,#111820 60%,#0B1014 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:80px 0;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;
  background:radial-gradient(circle,rgba(166,255,61,.16),transparent 70%);
  pointer-events:none;
}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;position:relative;z-index:1}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:-.5px;max-width:560px}
.cta-inner p{margin-top:12px;color:var(--text-2);max-width:560px;font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{font-size:14.5px;color:var(--text-2);line-height:1.85;max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.5px}
.footer-col ul li+li{margin-top:10px}
.footer-col ul a{font-size:14.5px;color:var(--text-2)}
.footer-col ul a:hover{color:var(--brand)}
.footer-contact li{display:flex;gap:8px;font-size:14.5px;color:var(--text-2);margin-bottom:10px}
.footer-contact li span:first-child{color:var(--text-3);flex:0 0 auto}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13.5px;color:var(--text-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom .links a{color:var(--text-3)}
.footer-bottom .links a:hover{color:var(--brand)}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .article-grid{grid-template-columns:minmax(0,1fr) 300px;gap:44px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-actions .icon-btn{display:none}
  .section{padding:76px 0}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:40px}
  .article-side{position:static}
  .article-main{max-width:none}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .header-inner{height:64px;gap:16px}
  .logo-text{font-size:16.5px}
  .section{padding:64px 0}
  .article-hero{padding:44px 0 36px}
  .article-layout{padding:40px 0 72px}
  .related-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 200px}
  .breadcrumb ol{height:auto;padding:12px 0;flex-wrap:wrap;row-gap:4px}
  .breadcrumb .current{max-width:100%;white-space:normal}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){
  .header-actions .btn-sm{display:none}
  .article-title{letter-spacing:-.4px}
  .article-meta{gap:6px 14px;font-size:13px}
  .article-body{font-size:16px;line-height:1.9}
  .share-row{padding:16px}
  .share-row .share-label{margin-right:0;width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-brand p{max-width:none}
  .back-row .btn{width:100%}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --lime:#A6FF3D;
  --lime-h:#C4FF74;
  --lime-12:rgba(166,255,61,.12);
  --lime-40:rgba(166,255,61,.40);
  --orange:#FF5C39;
  --violet:#7C5CFF;

  --bg:#070A0C;
  --bg-alt:#0B1014;
  --card:#111820;
  --card-2:#0E141A;
  --footer-bg:#05080A;

  --text:#E9F1F2;
  --text-2:#9BAAB2;
  --text-3:#6B7A83;

  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);

  --ok:#2BE38A;
  --warn:#FFC53D;
  --err:#FF5A5A;
  --info:#5CC8FF;

  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
  --r-pill:999px;

  --shadow:0 8px 24px rgba(0,0,0,.45);
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --pad:32px;
  --maxw:1200px;
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size:64px 64px, 64px 64px;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
h1,h2,h3,h4,h5{margin:0;line-height:1.3;font-weight:700;letter-spacing:.2px;}
h1{font-size:clamp(28px,4.2vw,44px);font-weight:800;line-height:1.25;}
h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;}
h3{font-size:19px;font-weight:700;}
h4{font-size:16px;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s ease, border-color .18s ease, background-color .18s ease;}
img{max-width:100%;display:block;border-radius:var(--r-img);}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--text);}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}
::selection{background:var(--lime-40);color:#070A0C;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 布局容器 ============ */
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--pad);
}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section--alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--lime);font-weight:600;margin-bottom:14px;
}
.section-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);display:inline-block;}
.section-head p{color:var(--text-2);margin-top:14px;font-size:16.5px;}

/* ============ 顶部进度条 ============ */
.scroll-progress{
  position:fixed;top:0;left:0;height:2px;width:0;
  background:linear-gradient(90deg,var(--lime),var(--lime-h));
  z-index:300;transition:width .1s linear;
}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:200;
  background:transparent;
  transition:background-color .25s ease, border-color .25s ease, backdrop-filter .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-solid{
  background:rgba(11,16,20,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:72px;
}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:800;font-size:18px;letter-spacing:.4px;
  color:var(--text);flex-shrink:0;
}
.logo-mark{
  width:26px;height:26px;border-radius:8px;
  background:linear-gradient(135deg,var(--lime) 0%,var(--lime-h) 55%,var(--violet) 130%);
  position:relative;flex-shrink:0;
  box-shadow:0 0 0 1px rgba(166,255,61,.35);
}
.logo-mark::after{
  content:"";position:absolute;inset:7px;border-radius:3px;
  background:#070A0C;
}
.logo-text i{font-style:normal;color:var(--text-2);font-weight:600;font-size:14px;margin-left:2px;}

.main-nav{
  display:flex;align-items:center;gap:2px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  padding:9px 13px;
  font-size:15px;
  color:var(--text-2);
  border-radius:9px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;
  background:var(--lime);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.045);}
.nav-link.is-active{color:var(--lime);}
.nav-link.is-active::after{transform:scaleX(1);}

.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.icon-btn{
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-2);border:1px solid var(--line);
  transition:color .18s ease, border-color .18s ease, background-color .18s ease;
}
.icon-btn:hover{color:var(--lime);border-color:var(--lime-40);background:var(--lime-12);}
.hamburger{display:none;}
.hamburger span{
  display:block;width:18px;height:2px;background:currentColor;border-radius:2px;margin:3px 0;
  transition:transform .2s ease, opacity .2s ease;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:transform .18s ease, background-color .18s ease, color .18s ease, border-color .18s ease, box-shadow .18s ease;
  white-space:nowrap;
}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-xl{height:56px;padding:0 34px;font-size:16.5px;}
.btn-primary{background:var(--lime);color:#070A0C;font-weight:700;}
.btn-primary:hover{background:var(--lime-h);transform:translateY(-2px);box-shadow:0 10px 24px rgba(166,255,61,.18);}
.btn-primary:active{transform:translateY(0);background:var(--lime);}
.btn-outline{background:transparent;border-color:var(--lime);color:var(--lime);}
.btn-outline:hover{background:var(--lime-12);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-ghost{color:var(--text-2);padding:0 6px;height:auto;border-radius:0;border-bottom:1px solid transparent;}
.btn-ghost:hover{color:var(--lime);border-bottom-color:var(--lime);}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;line-height:1.6;font-weight:600;
  border:1px solid var(--line-strong);color:var(--text-2);
}
.badge--lime{border-color:var(--lime-40);color:var(--lime);background:var(--lime-12);}
.badge--hot{border-color:rgba(255,92,57,.45);color:var(--orange);background:rgba(255,92,57,.1);}
.badge--violet{border-color:rgba(124,92,255,.45);color:#B7A6FF;background:rgba(124,92,255,.12);}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:8px;font-size:12.5px;
  color:var(--text-3);background:rgba(255,255,255,.04);border:1px solid var(--line);
}
.pill-group{display:flex;flex-wrap:wrap;gap:10px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 18px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:600;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.02);
  transition:all .18s ease;
}
.pill:hover{color:var(--text);border-color:var(--line-strong);transform:translateY(-2px);}
.pill.is-active{color:#070A0C;background:var(--lime);border-color:var(--lime);}

/* ============ 内页页头 ============ */
.page-hero{
  position:relative;
  padding:150px 0 72px;
  background-image:linear-gradient(100deg, rgba(7,10,12,.96) 0%, rgba(7,10,12,.82) 46%, rgba(7,10,12,.45) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--lime),transparent);
  opacity:.65;
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap;}
.crumbs a:hover{color:var(--lime);}
.crumbs .sep{opacity:.5;}
.crumbs .now{color:var(--text-2);max-width:52vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.page-hero h1{max-width:880px;}
.page-hero h1 em{font-style:normal;color:var(--lime);}
.page-hero .lead{
  max-width:720px;margin-top:20px;color:var(--text-2);font-size:17px;
}
.page-hero .pill-group{margin-top:32px;}

/* ============ 交替图文 ============ */
.split-stack{display:flex;flex-direction:column;gap:88px;}
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.split.reverse .split-media{order:2;}
.split-media{position:relative;}
.split-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border:1px solid var(--line);border-radius:var(--r-card);
  background-color:#111820;
}
.split-media::before{
  content:"";position:absolute;top:-2px;left:22px;width:76px;height:2px;background:var(--lime);border-radius:2px;
}
.split-body .step-no{
  font-size:13px;font-weight:700;color:var(--lime);letter-spacing:.16em;
  font-variant-numeric:tabular-nums;
}
.split-body h3{margin-top:10px;font-size:24px;}
.split-body p.desc{margin-top:14px;color:var(--text-2);font-size:16px;max-width:520px;}
.plain-list{margin-top:22px;display:flex;flex-direction:column;gap:2px;}
.plain-list li{
  display:flex;align-items:flex-start;gap:12px;
  padding:11px 12px;border-radius:10px;
  color:var(--text-2);font-size:15px;
  transition:background-color .18s ease,color .18s ease;
}
.plain-list li:hover{background:#0E141A;color:var(--text);}
.plain-list .dot{
  width:7px;height:7px;border-radius:50%;background:var(--lime);margin-top:9px;flex-shrink:0;
  box-shadow:0 0 0 4px var(--lime-12);
}

/* ============ 指标条 ============ */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--card);
  overflow:hidden;
}
.metric{
  padding:28px 24px;
  border-right:1px solid var(--line);
}
.metric:last-child{border-right:0;}
.metric .value{
  font-size:clamp(24px,2.6vw,32px);font-weight:800;color:var(--lime);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.metric .label{margin-top:8px;font-size:14.5px;color:var(--text-2);}
.metric .hint{margin-top:4px;font-size:12.5px;color:var(--text-3);}

/* ============ 流程时间线 ============ */
.flow{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  position:relative;
}
.flow::before{
  content:"";position:absolute;top:22px;left:6%;right:6%;height:1px;
  background:linear-gradient(90deg,var(--lime-40),rgba(255,255,255,.08));
}
.flow-item{position:relative;padding-top:56px;}
.flow-item .node{
  position:absolute;top:12px;left:0;
  width:22px;height:22px;border-radius:50%;
  background:var(--card);border:2px solid var(--lime);
  display:flex;align-items:center;justify-content:center;
}
.flow-item .node::after{content:"";width:8px;height:8px;border-radius:50%;background:var(--lime);}
.flow-item h4{font-size:17px;}
.flow-item p{margin-top:8px;color:var(--text-2);font-size:14.5px;}

/* ============ 面板 / 清单 ============ */
.panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px;
}
.panel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--lime-40);box-shadow:var(--shadow);}
.card:hover::before{transform:scaleX(1);}
.card h4{font-size:17px;}
.card p{margin-top:10px;color:var(--text-2);font-size:14.8px;}
.card .card-foot{margin-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.card .link{
  color:var(--lime);font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px;
}
.card .link:hover{gap:10px;}
.card .link::after{content:"→";transition:transform .18s ease;}

.list-panel{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--card);overflow:hidden;
}
.list-row{
  display:flex;align-items:center;gap:20px;
  padding:18px 24px;
  border-bottom:1px solid var(--line);
  transition:background-color .18s ease;
}
.list-row:last-child{border-bottom:0;}
.list-row:hover{background:#0E141A;}
.list-row .idx{
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;width:28px;flex-shrink:0;
}
.list-row .name{font-size:15.5px;font-weight:600;min-width:150px;}
.list-row .info{color:var(--text-2);font-size:14.5px;flex:1;}
.list-row .state{font-size:13px;color:var(--ok);}

/* ============ FAQ ============ */
.faq-list{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--card);overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 24px;text-align:left;font-size:17px;font-weight:700;color:var(--text);
  transition:color .18s ease, background-color .18s ease;
}
.faq-q:hover{color:var(--lime);background:#0E141A;}
.faq-q .mark{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line-strong);color:var(--lime);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;
  transition:transform .2s ease, border-color .2s ease;
}
.faq-item.is-open .faq-q{color:var(--lime);}
.faq-item.is-open .faq-q .mark{transform:rotate(180deg);border-color:var(--lime-40);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .2s ease;
}
.faq-a .inner{
  padding:0 24px 22px;color:var(--text-2);font-size:15.5px;
  border-top:1px solid var(--line);
  padding-top:18px;margin:0 24px 22px;padding-left:0;padding-right:0;
}

/* ============ 表单 ============ */
.form-panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:32px;
}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px;font-weight:600;}
.field input,.field select,.field textarea{
  width:100%;background:#0E141A;border:1px solid var(--line);border-radius:12px;
  padding:12px 14px;color:var(--text);transition:border-color .18s ease, box-shadow .18s ease;
}
.field textarea{min-height:118px;resize:vertical;line-height:1.75;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--lime);box-shadow:0 0 0 3px var(--lime-12);
}
.field.has-error input,.field.has-error textarea{border-color:var(--err);}
.field .err-msg{display:none;margin-top:6px;font-size:13px;color:var(--err);}
.field.has-error .err-msg{display:block;}
.form-note{margin-top:14px;font-size:13px;color:var(--text-3);}

/* ============ CTA ============ */
.cta-panel{
  position:relative;
  background:linear-gradient(120deg,#0B1014 0%,#111820 62%,#0B1014 100%);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:56px;
  overflow:hidden;
  clip-path:polygon(0 0, calc(100% - 56px) 0, 100% 56px, 100% 100%, 0 100%);
}
.cta-panel::before{
  content:"";position:absolute;top:0;left:0;width:180px;height:2px;background:var(--lime);
}
.cta-panel h2{max-width:640px;}
.cta-panel p{margin-top:16px;color:var(--text-2);max-width:620px;}
.cta-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--footer-bg);
  border-top:1px solid var(--line);
  padding:72px 0 32px;
  margin-top:0;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
}
.footer-brand p{margin-top:18px;color:var(--text-2);font-size:14.5px;max-width:340px;}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text);}
.footer-col ul li{margin-bottom:11px;font-size:14.5px;}
.footer-col ul li a{color:var(--text-2);}
.footer-col ul li a:hover{color:var(--lime);}
.footer-contact li{display:flex;gap:8px;color:var(--text-2);font-size:14.5px;}
.footer-contact li span:first-child{color:var(--text-3);}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13.5px;color:var(--text-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom .links a{color:var(--text-3);}
.footer-bottom .links a:hover{color:var(--lime);}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,5,7,.7);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:250;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:86%;max-width:380px;
  background:var(--bg-alt);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .26s ease;
  z-index:260;padding:22px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  padding:14px 12px;border-radius:12px;color:var(--text-2);font-size:16px;
  border:1px solid transparent;
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--lime);background:var(--lime-12);border-color:var(--lime-40);}
.drawer-sub{margin-top:26px;padding-top:22px;border-top:1px solid var(--line);}
.drawer-sub .label{font-size:12.5px;color:var(--text-3);letter-spacing:.12em;margin-bottom:12px;}
.drawer-sub a{display:block;padding:10px 12px;border-radius:10px;color:var(--text-2);font-size:15px;}
.drawer-sub a:hover{color:var(--lime);background:#0E141A;}
.drawer .btn{width:100%;margin-top:26px;}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:28px;bottom:28px;z-index:150;
  width:48px;height:48px;border-radius:50%;
  background:var(--card);border:1px solid var(--line-strong);color:var(--lime);
  display:flex;align-items:center;justify-content:center;font-size:18px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease, visibility .22s ease, transform .22s ease, border-color .18s ease;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:var(--lime);background:#0E141A;}

/* ============ 骨架 / 空态 ============ */
.skeleton{background:#111820;border-radius:var(--r-img);position:relative;overflow:hidden;}
.skeleton::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.05),transparent);
  animation:sk 1.6s infinite;
}
@keyframes sk{0%{transform:translateX(-100%);}100%{transform:translateX(100%);}}
.empty{
  border:1px dashed var(--line-strong);border-radius:var(--r-card);
  padding:40px 24px;text-align:center;color:var(--text-2);
}
.empty strong{display:block;color:var(--text);font-size:16px;margin-bottom:8px;}
.empty a{color:var(--lime);font-weight:600;}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  :root{--pad:28px;}
}
@media (max-width:1024px){
  :root{--pad:24px;}
  .main-nav{display:none;}
  .hamburger{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;}
  .header-inner{gap:16px;}
  .split{gap:36px;}
  .panel-grid{grid-template-columns:repeat(2,1fr);}
  .flow{grid-template-columns:repeat(2,1fr);row-gap:36px;}
  .flow::before{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:80px 0;}
  .page-hero{padding:130px 0 60px;}
}
@media (max-width:768px){
  :root{--pad:20px;}
  body{font-size:15.5px;}
  .split,.split.reverse{grid-template-columns:1fr;}
  .split.reverse .split-media{order:0;}
  .metrics{grid-template-columns:1fr 1fr;}
  .metric{border-right:0;border-bottom:1px solid var(--line);}
  .metric:nth-child(odd){border-right:1px solid var(--line);}
  .metric:nth-last-child(-n+2){border-bottom:0;}
  .split-stack{gap:64px;}
  .cta-panel{padding:36px 24px;clip-path:none;}
  .crumbs .now{max-width:70vw;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:640px){
  :root{--pad:18px;}
  .section{padding:64px 0;}
  .page-hero{padding:118px 0 48px;}
  .panel-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .form-panel,.panel{padding:22px;}
  .to-top{right:16px;bottom:76px;}
  .split-media img{aspect-ratio:16/11;}
  .section-head{margin-bottom:32px;}
  .header-inner{height:64px;}
}

/* roulang page: category3 */
:root{
  --bg:#070A0C;
  --bg-alt:#0B1014;
  --card:#111820;
  --card-soft:#0E141A;
  --footer-bg:#05080A;
  --primary:#A6FF3D;
  --primary-hover:#C4FF74;
  --primary-12:rgba(166,255,61,.12);
  --primary-40:rgba(166,255,61,.4);
  --accent:#FF5C39;
  --violet:#7C5CFF;
  --text:#E9F1F2;
  --text-2:#9BAAB2;
  --text-3:#6B7A83;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --success:#2BE38A;
  --warning:#FFC53D;
  --error:#FF5A5A;
  --info:#5CC8FF;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow:0 8px 24px rgba(0,0,0,.45);
  --container:1200px;
  --gap:24px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  font-weight:400;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.3;letter-spacing:.2px;}
h1{font-size:clamp(26px,4vw,42px);}
h2{font-size:clamp(22px,2.6vw,30px);}
h3{font-size:18px;font-weight:700;}
h4{font-size:16px;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
img{max-width:100%;display:block;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--text);}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:1.5px;color:var(--primary);
  border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:5px 14px;margin-bottom:18px;background:var(--primary-12);
}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:16px;}

/* ---------- 顶部导航 ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;height:2px;width:0%;
  background:linear-gradient(90deg,var(--primary),var(--primary-hover));
  z-index:1200;transition:width .1s linear;
}
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(11,16,20,.92);
  border-bottom-color:var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:.5px;white-space:nowrap;}
.logo-mark{
  width:26px;height:26px;flex:0 0 26px;border-radius:8px;
  background:linear-gradient(140deg,var(--primary),#5ecc16);
  box-shadow:0 0 0 3px var(--primary-12);
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;inset:8px 8px 8px 8px;border-radius:3px;background:var(--bg);
}
.logo-text i{font-style:normal;color:var(--text-2);font-weight:500;font-size:14px;margin-left:6px;}

.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;padding:10px 12px;font-size:15px;color:var(--text-2);border-radius:10px;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link.is-active{color:var(--primary);}
.nav-link.is-active::after{transform:scaleX(1);}

.header-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-2);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.icon-btn:hover{color:var(--primary);border-color:var(--primary-40);background:var(--primary-12);}

.hamburger{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.hamburger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(88vw,370px);z-index:1150;
  background:var(--bg-alt);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .28s ease;
  padding:88px 24px 32px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-close{
  position:absolute;top:18px;right:18px;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;color:var(--text-2);
}
.drawer-close:hover{color:var(--primary);border-color:var(--primary-40);}
.drawer h4{color:var(--text-3);font-size:12px;letter-spacing:1.4px;margin:24px 0 12px;text-transform:uppercase;}
.drawer-links{display:flex;flex-direction:column;gap:2px;}
.drawer-links a{padding:12px 14px;border-radius:10px;border:1px solid transparent;color:var(--text-2);font-size:15px;}
.drawer-links a:hover{background:var(--card-soft);border-color:var(--line);color:var(--text);}
.drawer-links a.is-active{color:var(--primary);background:var(--primary-12);border-color:var(--primary-40);}
.drawer-cta{margin-top:26px;}
.drawer-backdrop{
  position:fixed;inset:0;background:rgba(5,8,10,.68);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:1100;
}
.drawer-backdrop.is-open{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:700;white-space:nowrap;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,opacity .18s ease;
}
.btn-primary{background:var(--primary);color:#070A0C;}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{border:1px solid var(--primary);color:var(--primary);background:transparent;}
.btn-outline:hover{background:var(--primary-12);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-ghost{padding:0;height:auto;color:var(--primary);border-bottom:1px solid transparent;}
.btn-ghost:hover{border-bottom-color:var(--primary);}
.btn-sm{height:44px;padding:0 20px;font-size:15px;}
.btn-lg{height:56px;padding:0 34px;font-size:17px;}
.btn:disabled,.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;}

/* ---------- 徽章与标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:3px 12px;
  font-size:12px;line-height:1.7;border-radius:var(--radius-pill);
  border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.03);
}
.badge-primary{border-color:var(--primary-40);color:var(--primary);background:var(--primary-12);}
.badge-hot{border-color:rgba(255,92,57,.45);color:var(--accent);background:rgba(255,92,57,.1);}
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;font-size:12px;border-radius:8px;
  border:1px solid var(--line);color:var(--text-2);background:var(--card-soft);
}
.tag:hover{border-color:var(--primary-40);color:var(--primary);}

/* ---------- 分类页页头 ---------- */
.class-hero{
  position:relative;padding:150px 0 84px;
  background-image:linear-gradient(100deg,rgba(7,10,12,.95) 0%,rgba(7,10,12,.82) 46%,rgba(7,10,12,.45) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.class-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;opacity:.7;pointer-events:none;
}
.class-hero::after{
  content:"";position:absolute;top:0;right:0;width:180px;height:180px;
  background:linear-gradient(225deg,var(--primary-12),transparent 68%);
  clip-path:polygon(100% 0,100% 100%,0 0);
  pointer-events:none;
}
.class-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--text-3);}
.breadcrumb .current{color:var(--text);max-width:44vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.hero-scan{position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary-40),transparent);animation:scan 7s linear infinite;z-index:1;opacity:.8;}
@keyframes scan{
  0%{transform:translateY(0);opacity:0;}
  12%{opacity:.85;}
  88%{opacity:.85;}
  100%{transform:translateY(430px);opacity:0;}
}
.class-hero h1{max-width:900px;margin-bottom:18px;}
.class-hero h1 em{font-style:normal;color:var(--primary);}
.hero-lead{max-width:720px;color:var(--text-2);font-size:17px;line-height:1.85;}
.pill-switch{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;
  border-radius:var(--radius-pill);border:1px solid var(--line);color:var(--text-2);
  font-size:14px;background:rgba(255,255,255,.03);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease,transform .2s ease;
}
.pill:hover{border-color:var(--primary-40);color:var(--primary);transform:translateY(-2px);}
.pill.is-active{background:var(--primary);color:#070A0C;border-color:var(--primary);font-weight:700;}

/* ---------- 指标条 ---------- */
.metrics{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--bg-alt);
}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.metric{padding:34px 24px;border-right:1px solid var(--line);}
.metric:last-child{border-right:0;}
.metric .num{
  font-size:clamp(26px,3vw,36px);font-weight:800;color:var(--primary);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.metric .num small{font-size:15px;color:var(--text-2);font-weight:500;margin-left:4px;}
.metric .label{margin-top:8px;color:var(--text-2);font-size:14px;}

/* ---------- 帮助布局：粘性目录 + 时间线 ---------- */
.help-layout{display:grid;grid-template-columns:268px 1fr;gap:56px;align-items:start;}
.toc{position:sticky;top:104px;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--card);padding:22px;overflow:hidden;}
.toc::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--primary),transparent);}
.toc h4{font-size:12px;letter-spacing:1.4px;color:var(--text-3);margin-bottom:14px;text-transform:uppercase;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;padding:10px 12px;border-radius:10px;font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;
}
.toc-list a:hover{background:var(--card-soft);color:var(--text);}
.toc-list a.is-current{color:var(--primary);border-left-color:var(--primary);background:var(--primary-12);}
.toc-note{margin-top:20px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);line-height:1.75;}

.timeline{position:relative;padding-left:34px;}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:1px;background:var(--line);}
.tl-node{position:relative;padding-bottom:36px;}
.tl-node:last-child{padding-bottom:0;}
.tl-node::before{
  content:"";position:absolute;left:-31px;top:9px;width:15px;height:15px;border-radius:50%;
  background:var(--bg);border:2px solid var(--primary);
}
.tl-node::after{
  content:"";position:absolute;left:-27px;top:13px;width:7px;height:7px;border-radius:50%;background:var(--primary);
}
.tl-card{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--card);
  padding:22px 24px;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.tl-card:hover{border-color:var(--primary-40);transform:translateY(-4px);box-shadow:var(--shadow);}
.tl-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:10px;flex-wrap:wrap;}
.tl-top h3{display:flex;align-items:center;gap:10px;}
.tl-index{
  font-size:12px;color:var(--primary);border:1px solid var(--primary-40);border-radius:8px;
  padding:2px 8px;font-variant-numeric:tabular-nums;
}
.tl-card p{color:var(--text-2);font-size:15px;}
.tl-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;}
.tl-meta .tag{background:transparent;}

/* ---------- 帮助入口卡片 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.entry-card{
  position:relative;display:grid;grid-template-columns:150px 1fr;gap:20px;align-items:center;
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--card);
  padding:20px;overflow:hidden;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.entry-card::after{content:"";position:absolute;top:0;left:0;width:0;height:2px;background:var(--primary);transition:width .25s ease;}
.entry-card:hover{border-color:var(--primary-40);transform:translateY(-4px);box-shadow:var(--shadow);}
.entry-card:hover::after{width:100%;}
.entry-thumb{
  position:relative;border-radius:12px;overflow:hidden;aspect-ratio:4/3;background:var(--card-soft);
  border:1px solid var(--line);
}
.entry-thumb img{width:100%;height:100%;object-fit:cover;}
.entry-body h3{margin-bottom:8px;}
.entry-body p{color:var(--text-2);font-size:14px;margin-bottom:12px;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:700;}
.text-link i{transition:transform .2s ease;}
.text-link:hover i{transform:translateX(4px);}

/* ---------- 表单 ---------- */
.contact-wrap{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:start;}
.contact-copy ul{margin-top:24px;display:flex;flex-direction:column;gap:14px;}
.contact-copy li{display:flex;gap:12px;color:var(--text-2);font-size:15px;}
.contact-copy li i{color:var(--primary);margin-top:6px;}
.form-card{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--card);
  padding:30px;position:relative;overflow:hidden;
}
.form-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--primary),var(--violet));}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;background:var(--card-soft);border:1px solid var(--line);border-radius:12px;
  padding:12px 14px;transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field textarea{min-height:112px;resize:vertical;line-height:1.75;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-12);
}
.field.has-error input,.field.has-error textarea{border-color:var(--error);}
.field .err{display:none;color:var(--error);font-size:13px;margin-top:6px;}
.field.has-error .err{display:block;}
.form-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:8px;}
.form-foot .hint{font-size:13px;color:var(--text-3);}
.form-status{
  margin-top:16px;font-size:14px;border-radius:12px;padding:12px 14px;display:none;
  border:1px solid rgba(43,227,138,.35);background:rgba(43,227,138,.08);color:var(--success);
}
.form-status.is-visible{display:block;}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--card);
  overflow:hidden;transition:border-color .2s ease;
}
.faq-item.is-open{border-color:var(--primary-40);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;text-align:left;font-size:17px;font-weight:700;color:var(--text);
}
.faq-q:hover{color:var(--primary);}
.faq-q i{color:var(--primary);transition:transform .2s ease;flex:0 0 auto;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.faq-a-inner{padding:0 24px 22px;border-top:1px solid var(--line);margin-top:0;padding-top:16px;color:var(--text-2);font-size:15px;}
.faq-a-inner p+p{margin-top:10px;}

/* ---------- 底部 CTA ---------- */
.cta-panel{
  position:relative;border:1px solid var(--line);border-radius:22px;background:var(--bg-alt);
  padding:56px;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.cta-panel::before{
  content:"";position:absolute;top:0;right:0;width:260px;height:260px;
  background:linear-gradient(225deg,var(--primary-12),transparent 70%);
  clip-path:polygon(100% 0,100% 100%,0 0);
}
.cta-panel::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:48px 48px;opacity:.6;pointer-events:none;
}
.cta-copy{position:relative;z-index:2;max-width:640px;}
.cta-copy h2{margin-bottom:12px;}
.cta-copy p{color:var(--text-2);font-size:16px;}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);padding:72px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid var(--line);}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{color:var(--text-3);font-size:14px;max-width:340px;line-height:1.85;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:var(--text-3);font-size:14px;}
.footer-col a:hover{color:var(--primary);}
.footer-contact li{display:flex;gap:8px;color:var(--text-3);font-size:14px;}
.footer-contact span:first-child{color:var(--text-2);flex:0 0 auto;}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;color:var(--text-3);font-size:13px;}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom .links a{color:var(--text-3);}
.footer-bottom .links a:hover{color:var(--primary);}

/* ---------- 图片状态 ---------- */
.img-wrap{position:relative;background:var(--card-soft);border-radius:12px;overflow:hidden;}
.img-wrap.is-error{border:1px dashed var(--line-strong);background:repeating-linear-gradient(135deg,#0E141A,#0E141A 10px,#0B1014 10px,#0B1014 20px);}
.img-wrap.is-error img{opacity:0;}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .help-layout{grid-template-columns:236px 1fr;gap:40px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .main-nav{display:none;}
  .hamburger{display:flex;}
  .header-actions .btn-sm{display:none;}
  .section{padding:76px 0;}
  .class-hero{padding:132px 0 68px;}
  .metrics-grid{grid-template-columns:repeat(2,1fr);}
  .metric{border-bottom:1px solid var(--line);}
  .metric:nth-child(2n){border-right:0;}
  .metric:nth-last-child(-n+2){border-bottom:0;}
  .help-layout{grid-template-columns:1fr;gap:36px;}
  .toc{position:static;padding:18px;}
  .toc-list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:6px;}
  .toc-list a{white-space:nowrap;border-left:0;border:1px solid var(--line);border-radius:var(--radius-pill);padding:8px 14px;}
  .toc-list a.is-current{border-color:var(--primary-40);}
  .toc-note{display:none;}
  .contact-wrap{grid-template-columns:1fr;gap:36px;}
  .cta-panel{padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  body{font-size:15px;}
  .section{padding:64px 0;}
  .section-head{margin-bottom:32px;}
  .class-hero{padding:118px 0 56px;}
  .breadcrumb .current{max-width:60vw;}
  .hero-lead{font-size:16px;}
  .entry-grid{grid-template-columns:1fr;}
  .entry-card{grid-template-columns:120px 1fr;gap:16px;}
  .timeline{padding-left:26px;}
  .tl-node::before{left:-25px;}
  .tl-node::after{left:-21px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .logo-text i{display:none;}
  .metrics-grid{grid-template-columns:1fr;}
  .metric{border-right:0;padding:24px 18px;}
  .metric:nth-last-child(-n+2){border-bottom:1px solid var(--line);}
  .metric:last-child{border-bottom:0;}
  .entry-card{grid-template-columns:1fr;}
  .entry-thumb{aspect-ratio:16/9;}
  .form-card{padding:22px;}
  .faq-q{padding:16px 18px;font-size:16px;}
  .faq-a-inner{padding:14px 18px 20px;}
  .cta-panel{padding:30px 20px;border-radius:18px;}
  .cta-copy h2{font-size:22px;}
}

/* roulang page: category2 */
:root{
  --bg:#070A0C;
  --bg-alt:#0B1014;
  --card:#111820;
  --card-alt:#0E141A;
  --footer:#05080A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#A6FF3D;
  --primary-hover:#C4FF74;
  --primary-12:rgba(166,255,61,.12);
  --primary-40:rgba(166,255,61,.4);
  --accent:#FF5C39;
  --violet:#7C5CFF;
  --text:#E9F1F2;
  --text-2:#9BAAB2;
  --text-3:#6B7A83;
  --success:#2BE38A;
  --warn:#FFC53D;
  --danger:#FF5A5A;
  --info:#5CC8FF;
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --r-img:14px;
  --shadow:0 8px 24px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  letter-spacing:.2px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),opacity .18s var(--ease)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.3;letter-spacing:.2px}
h1{font-size:clamp(30px,4.2vw,46px);font-weight:800;line-height:1.25}
h2{font-size:clamp(24px,2.8vw,34px);font-weight:800}
h3{font-size:19px;font-weight:700;line-height:1.35}
h4{font-size:16px;font-weight:700}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
.num,.stat-value,.step-num,.price{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
::selection{background:var(--primary);color:#070A0C}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-tight{padding:72px 0}

/* ---------- 滚动进度 ---------- */
.scroll-progress{position:fixed;top:0;left:0;height:2px;width:0;background:linear-gradient(90deg,var(--primary),var(--primary-hover));z-index:200;transition:width .1s linear}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  transition:background .25s var(--ease),border-color .25s var(--ease),backdrop-filter .25s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(11,16,20,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
}
.header-inner{
  height:var(--nav-h);
  display:flex;align-items:center;gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(140deg,var(--primary) 0%,var(--primary-hover) 45%,var(--violet) 160%);
  position:relative;box-shadow:0 0 0 1px rgba(255,255,255,.08) inset;
}
.logo-mark::after{
  content:"";position:absolute;inset:8px 9px auto auto;width:12px;height:12px;
  border:2px solid #070A0C;border-radius:4px;transform:rotate(45deg);
}
.logo-text{font-size:18px;font-weight:800;letter-spacing:.4px;white-space:nowrap}
.logo-text i{font-style:normal;color:var(--primary);font-weight:700}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:nowrap}
.nav-link{
  position:relative;padding:10px 12px;font-size:15px;color:var(--text-2);white-space:nowrap;
  border-radius:10px;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:center;transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;background:transparent;
  border:1px solid var(--line-strong);cursor:pointer;position:relative;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:2px;border-radius:2px;background:var(--text);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
.nav-toggle:hover{border-color:var(--primary-40)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.3px;
  border:1px solid transparent;cursor:pointer;background:transparent;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),opacity .18s var(--ease);
  white-space:nowrap;
}
.btn-sm{height:44px;padding:0 20px;font-size:14px;border-radius:11px}
.btn-lg{height:56px;padding:0 32px;font-size:16px}
.btn-primary{background:var(--primary);color:#070A0C}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:var(--primary-40);color:var(--primary)}
.btn-ghost:hover{background:var(--primary-12);border-color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-plain{border-color:var(--line-strong);color:var(--text)}
.btn-plain:hover{border-color:var(--primary-40);color:var(--primary);transform:translateY(-2px)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:14px;
  border-bottom:1px solid transparent;transition:border-color .18s var(--ease),gap .18s var(--ease);
}
.link-arrow::after{content:"→";font-size:14px;transition:transform .18s var(--ease)}
.link-arrow:hover{border-bottom-color:var(--primary-40)}
.link-arrow:hover::after{transform:translateX(3px)}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(5,8,10,.65);backdrop-filter:blur(3px);
  z-index:150;opacity:0;pointer-events:none;transition:opacity .25s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);z-index:160;
  background:var(--bg-alt);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .32s var(--ease);
  padding:80px 24px 32px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-close{
  position:absolute;top:18px;right:18px;width:44px;height:44px;border-radius:12px;
  background:transparent;border:1px solid var(--line-strong);cursor:pointer;color:var(--text);
  font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{border-color:var(--primary-40);color:var(--primary)}
.drawer-title{font-size:12px;letter-spacing:2px;color:var(--text-3);margin:0 0 12px;text-transform:uppercase}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:26px}
.drawer-nav a{padding:12px 12px;border-radius:10px;color:var(--text-2);font-size:16px}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--card);color:var(--primary)}
.drawer-cats{display:flex;flex-direction:column;gap:8px;margin-bottom:26px}
.drawer-cat{
  display:flex;justify-content:space-between;align-items:center;
  padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--card);
  font-size:15px;font-weight:600;
}
.drawer-cat span:last-child{color:var(--primary);font-size:13px}
.drawer-cat:hover{border-color:var(--primary-40)}

/* ---------- 页头 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:158px 0 76px;
  background:var(--bg) url('/assets/images/backpic/back-2.webp') center right/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,10,12,.97) 0%,rgba(7,10,12,.9) 42%,rgba(7,10,12,.6) 78%,rgba(7,10,12,.45) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 72%);
}
.hero-scan{
  position:absolute;left:0;right:0;top:-160px;height:140px;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(166,255,61,.08),transparent);
  animation:scanMove 7.5s linear infinite;
}
@keyframes scanMove{0%{transform:translateY(0)}100%{transform:translateY(920px)}}
@media (prefers-reduced-motion:reduce){.hero-scan{animation:none;opacity:0}html{scroll-behavior:auto}}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:var(--text);max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;
  padding:6px 14px;border:1px solid var(--primary-40);border-radius:var(--r-pill);
  background:var(--primary-12);color:var(--primary);font-size:13px;font-weight:600;letter-spacing:.6px;
}
.hero-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary)}
.page-hero h1{max-width:19em;margin-bottom:20px}
.page-hero h1 em{font-style:normal;color:var(--primary)}
.hero-lead{max-width:620px;color:var(--text-2);font-size:17px;line-height:1.85;margin-bottom:32px}

/* 分类切换胶囊组 */
.pill-group{display:flex;flex-wrap:wrap;gap:10px}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);color:var(--text-2);font-size:14px;font-weight:600;
  background:rgba(17,24,32,.6);transition:all .18s var(--ease);
}
.pill:hover{border-color:var(--primary-40);color:var(--text);transform:translateY(-2px)}
.pill.is-on{background:var(--primary);border-color:var(--primary);color:#070A0C}
.pill.is-on:hover{background:var(--primary-hover);transform:translateY(-2px)}

/* ---------- 板块标题 ---------- */
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--text-2);font-size:16px;line-height:1.85}
.eyebrow{
  display:inline-block;margin-bottom:14px;color:var(--primary);
  font-size:13px;font-weight:700;letter-spacing:2.4px;
}

/* ---------- 标签过滤胶囊 ---------- */
.chip-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:40px}
.chip{
  padding:8px 16px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--card-alt);color:var(--text-2);font-size:13px;font-weight:500;cursor:pointer;
  transition:all .18s var(--ease);
}
.chip:hover{border-color:var(--primary-40);color:var(--text)}
.chip.is-on{background:var(--primary-12);border-color:var(--primary);color:var(--primary)}
.chip:active{transform:scale(.97)}

/* ---------- 卡片网格 ---------- */
.cards-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--primary);
  transform:scaleX(0);transform-origin:left;transition:transform .26s var(--ease);z-index:3;
}
.card:hover{transform:translateY(-4px);border-color:var(--primary-40);box-shadow:var(--shadow)}
.card:hover::before{transform:scaleX(1)}
.card-media{position:relative;aspect-ratio:16/9;background:var(--card-alt);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-media.is-loading::after{
  content:"";position:absolute;inset:0;background:linear-gradient(90deg,#111820,#16202a,#111820);
  background-size:200% 100%;animation:skeleton 1.4s linear infinite;
}
@keyframes skeleton{0%{background-position:200% 0}100%{background-position:-200% 0}}
.card-media img.img-fallback{
  background:repeating-linear-gradient(45deg,#111820,#111820 10px,#0E141A 10px,#0E141A 20px);
  border:1px dashed var(--line-strong);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);border:1px solid var(--primary-40);
  background:rgba(7,10,12,.78);color:var(--primary);font-size:12px;font-weight:600;
}
.card-media .badge{position:absolute;top:12px;left:12px;z-index:2}
.card-media .badge.hot{border-color:var(--accent);color:var(--accent);background:rgba(7,10,12,.85)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:18px}
.card-body p{color:var(--text-2);font-size:14.5px;line-height:1.8;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;padding-top:6px}

/* ---------- 大图演示 ---------- */
.demo-figure{
  margin:0 0 40px;border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;
  background:var(--card);
}
.demo-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--card-alt)}
.demo-figure figcaption{
  padding:14px 20px;border-top:1px solid var(--line);color:var(--text-3);font-size:13px;
}
.demo-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;counter-reset:step}
.demo-steps li{
  position:relative;padding:24px 22px 22px;background:var(--card-alt);
  border:1px solid var(--line);border-radius:var(--r-card);border-top:2px solid var(--primary);
}
.demo-steps .step-num{display:block;color:var(--primary);font-size:13px;font-weight:700;letter-spacing:2px;margin-bottom:10px}
.demo-steps h3{font-size:17px;margin-bottom:8px}
.demo-steps p{color:var(--text-2);font-size:14.5px;margin:0}

/* ---------- 数据条 ---------- */
.metric-bar{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  margin-top:56px;
}
.metric{background:var(--card);padding:28px 24px}
.metric .stat-value{display:block;font-size:32px;font-weight:800;color:var(--primary);line-height:1.2;margin-bottom:6px}
.metric .stat-value small{font-size:14px;font-weight:600;color:var(--text-2);margin-left:4px}
.metric h3{font-size:15px;margin-bottom:4px}
.metric p{color:var(--text-3);font-size:13px;margin:0;line-height:1.7}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color .2s var(--ease)}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item.is-open{border-color:var(--primary-40)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:700;color:var(--text);line-height:1.5;
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line-strong);
  position:relative;transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--primary);transform:translate(-50%,-50%);
}
.faq-icon::before{width:11px;height:1.5px}
.faq-icon::after{width:1.5px;height:11px;transition:opacity .2s var(--ease)}
.faq-item.is-open .faq-icon{border-color:var(--primary);transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s var(--ease)}
.faq-a-inner{padding:0 24px 22px;border-top:1px solid var(--line);padding-top:16px;color:var(--text-2);font-size:15px;line-height:1.9}
.faq-a-inner p{margin:0}

/* ---------- CTA 面板 ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  background:var(--bg-alt) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border:1px solid var(--line);border-radius:24px;
  padding:64px 56px;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(7,10,12,.96) 0%,rgba(7,10,12,.86) 55%,rgba(7,10,12,.66) 100%);
}
.cta-panel::after{
  content:"";position:absolute;top:0;right:0;width:180px;height:180px;pointer-events:none;
  background:linear-gradient(225deg,var(--primary-12),transparent 70%);
  clip-path:polygon(100% 0,100% 100%,0 0);
}
.cta-inner{position:relative;z-index:2;max-width:640px}
.cta-inner h2{margin-bottom:14px}
.cta-inner p{color:var(--text-2);font-size:16px;margin-bottom:30px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);border-top:1px solid var(--line);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{color:var(--text-3);font-size:14px;line-height:1.85;max-width:340px;margin:0}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{color:var(--text-2);font-size:14px}
.footer-col a:hover{color:var(--primary)}
.footer-contact li{display:flex;gap:8px;color:var(--text-2);font-size:14px;flex-wrap:wrap}
.footer-contact li span:first-child{color:var(--text-3);min-width:42px}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 30px;
  display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;
  color:var(--text-3);font-size:13px;
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .links a{color:var(--text-3)}
.footer-bottom .links a:hover{color:var(--primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 28px}
  .nav-link{padding:10px 9px;font-size:14px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .main-nav{display:none}
  .nav-toggle{display:block}
  .header-actions .btn{display:none}
  .section{padding:76px 0}
  .cards-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .demo-steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric-bar{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-panel{padding:52px 34px;border-radius:20px}
  .page-hero{padding:132px 0 64px}
}
@media (max-width:768px){
  body{font-size:15.5px;line-height:1.85}
  .container{padding:0 18px}
  .section{padding:64px 0}
  .section-head{margin-bottom:34px}
  .page-hero{padding:118px 0 56px;background-position:center top}
  .page-hero::before{background:linear-gradient(180deg,rgba(7,10,12,.96) 0%,rgba(7,10,12,.88) 55%,rgba(7,10,12,.92) 100%)}
  .hero-lead{font-size:15.5px}
  .cards-grid{grid-template-columns:1fr}
  .demo-steps{grid-template-columns:1fr}
  .metric-bar{grid-template-columns:1fr}
  .metric{padding:22px 20px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:34px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-panel{padding:40px 22px}
  .cta-actions .btn{width:100%}
  .faq-q{padding:17px 18px;font-size:15.5px}
  .faq-a-inner{padding:14px 18px 18px}
  .pill{padding:9px 16px;font-size:13px}
  .site-footer{padding-top:56px}
}
@media (max-width:520px){
  h1{font-size:27px}
  .hero-eyebrow{font-size:12px;letter-spacing:.4px}
  .breadcrumb{font-size:12px}
  .breadcrumb .current{max-width:150px}
}