/* roulang page: index */
:root{
  --bg-0:#07110E;
  --bg-1:#0C1A16;
  --bg-2:#122420;
  --brand:#14E0A0;
  --brand-2:#6FE9FF;
  --accent:#FF7A29;
  --ink:#E9F5F0;
  --ink-2:#B9CDC6;
  --ink-3:#8AA79E;
  --paper:#F5F9F7;
  --paper-ink:#16221E;
  --paper-ink-2:#45594F;
  --line:rgba(20,224,160,.18);
  --line-2:rgba(255,255,255,.08);
  --grad-brand:linear-gradient(135deg,#0F8F66 0%,#14E0A0 52%,#6FE9FF 100%);
  --grad-cta:linear-gradient(135deg,#FF8A3D 0%,#FF6B1A 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --shadow-card:0 0 0 1px var(--line),0 18px 50px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
h1,h2,h3,h4,p,ul,ol,li,figure{margin:0;padding:0}
ul,ol{list-style:none}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
@media (max-width:640px){.container{padding:0 18px}}
.section{padding:96px 0;position:relative}
@media (max-width:640px){.section{padding:56px 0}}
.section-head{margin-bottom:44px;max-width:780px}
.section-head h2{font-size:28px;line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:14px;font-size:16px;color:var(--ink-2)}
@media (max-width:640px){
  .section-head{margin-bottom:30px}
  .section-head h2{font-size:22px}
}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(20,224,160,.08);color:var(--brand);font-size:13px;font-weight:600;letter-spacing:.02em;margin-bottom:18px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(20,224,160,.85)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:12px 26px;border-radius:999px;font-size:15px;font-weight:700;white-space:nowrap;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.btn-primary{background:var(--grad-cta);color:#1A0C02;box-shadow:0 10px 28px rgba(255,107,26,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(255,107,26,.45);color:#1A0C02}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px rgba(255,107,26,.3)}
.btn-ghost{background:transparent;color:var(--brand);border:1px solid var(--line)}
.btn-ghost:hover{border-color:rgba(20,224,160,.55);background:rgba(20,224,160,.08);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.btn.is-disabled,.btn[disabled]{opacity:.5;box-shadow:none;pointer-events:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:700;color:var(--brand)}
.link-arrow em{font-style:normal;transition:transform .2s var(--ease)}
.link-arrow:hover{color:#fff}
.link-arrow:hover em{transform:translateX(4px)}

/* 顶栏 */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(7,17,14,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line-2);transition:background .25s var(--ease),border-color .25s var(--ease)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--grad-brand);opacity:.7;pointer-events:none}
.site-header.is-scrolled{background:rgba(7,17,14,.94);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:74px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;color:var(--ink)}
.logo-mark{width:32px;height:32px;border-radius:50%;background:var(--grad-brand);display:inline-flex;align-items:center;justify-content:center;box-shadow:0 0 18px rgba(20,224,160,.45)}
.logo-mark::after{content:"";width:14px;height:14px;border-radius:50%;background:var(--bg-0);box-shadow:inset 0 0 8px rgba(20,224,160,.65)}
.logo-text{font-size:17px;font-weight:800;letter-spacing:.01em;color:#fff;white-space:nowrap}
.logo-text em{font-style:normal;font-size:14px;font-weight:700;color:var(--brand);margin-left:3px}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav a{position:relative;display:inline-flex;align-items:center;min-height:44px;padding:10px 14px;font-size:15px;color:var(--ink-2);border-radius:10px;transition:color .2s var(--ease),background .2s var(--ease)}
.main-nav a::after{content:"";position:absolute;left:14px;right:14px;bottom:8px;height:2px;border-radius:2px;background:var(--grad-brand);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease)}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--brand)}
.main-nav a.is-active::after{transform:scaleX(1);box-shadow:0 6px 18px rgba(20,224,160,.35)}
.main-nav a.is-active::before{content:"";position:absolute;left:1px;top:50%;margin-top:-3px;width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(20,224,160,.9)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.menu-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);flex-direction:column;align-items:center;justify-content:center;gap:5px}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}
.menu-toggle:hover{border-color:rgba(20,224,160,.5)}
@media (max-width:1024px){
  .main-nav{display:none}
  .menu-toggle{display:inline-flex}
  .header-actions .btn{display:none}
  .logo-text{font-size:15px}
  .logo-text em{font-size:13px}
}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s;z-index:1290}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);background:var(--bg-1);border-left:1px solid var(--line-2);z-index:1300;transform:translateX(102%);transition:transform .3s var(--ease);display:flex;flex-direction:column}
.drawer::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad-brand)}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 20px;border-bottom:1px solid var(--line-2)}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line-2);color:var(--ink-2);font-size:20px;line-height:1}
.drawer-close:hover{color:var(--brand);border-color:var(--line)}
.drawer-nav{flex:1;overflow-y:auto;padding:14px 12px;display:flex;flex-direction:column;gap:4px}
.drawer-nav a{display:flex;align-items:center;min-height:48px;padding:12px 16px;border-radius:12px;color:var(--ink-2);font-size:16px}
.drawer-nav a:hover{background:rgba(255,255,255,.04);color:var(--ink)}
.drawer-nav a.is-active{color:var(--brand);background:rgba(20,224,160,.08);border:1px solid var(--line)}
.drawer-foot{padding:16px 20px 26px;border-top:1px solid var(--line-2)}

/* Hero */
.hero{position:relative;padding:84px 0 72px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(900px 420px at 8% 0%,rgba(20,224,160,.16),transparent 62%),radial-gradient(720px 380px at 94% 16%,rgba(111,233,255,.12),transparent 60%)}
.hero-inner{position:relative;display:flex;align-items:center}
.hero h1{font-size:40px;line-height:1.22;font-weight:800;letter-spacing:-.01em;margin-top:20px;color:#fff}
.hero-sub{margin-top:16px;font-size:18px;line-height:1.75;color:var(--ink-2);max-width:540px}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.hero-stats{margin-top:40px;display:flex;flex-wrap:wrap;gap:12px}
.mini-stat{display:inline-flex;align-items:baseline;gap:8px;padding:10px 18px;border-radius:999px;background:var(--bg-2);border:1px solid var(--line-2)}
.mini-stat b{font-size:18px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums}
.mini-stat span{font-size:13px;color:var(--ink-3)}
.hero-visual{position:relative;margin:0;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);aspect-ratio:16/11}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(7,17,14,.85) 0%,rgba(7,17,14,.42) 52%,rgba(7,17,14,.14) 100%)}
.hero-figure-cap{position:absolute;left:20px;bottom:20px;right:20px;z-index:2;font-size:13px;color:var(--ink-2)}
.hero-score{position:absolute;right:20px;top:20px;z-index:2;display:flex;align-items:center;gap:10px;padding:10px 16px;border-radius:14px;background:rgba(7,17,14,.82);border:1px solid var(--line)}
.hero-score b{font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--accent)}
.hero-score span{font-size:12px;color:var(--ink-3);letter-spacing:.06em}
@media (max-width:1024px){
  .hero{padding:64px 0 56px}
  .hero-visual{margin-top:36px}
}
@media (max-width:640px){
  .hero h1{font-size:28px;line-height:1.32}
  .hero-sub{font-size:15.5px}
  .hero-visual{aspect-ratio:16/10}
}

/* 痛点提问 */
.pain-section{background:var(--bg-1);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.pain-card{position:relative;height:100%;padding:26px 22px 26px 28px;background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-md);transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.pain-card::before{content:"";position:absolute;left:0;top:24px;bottom:24px;width:2px;border-radius:2px;background:var(--grad-brand)}
.pain-card:hover{transform:translateY(-4px);border-color:rgba(20,224,160,.42);box-shadow:0 20px 44px rgba(0,0,0,.45)}
.pain-index{display:block;font-size:13px;font-weight:700;color:var(--ink-3);font-variant-numeric:tabular-nums;letter-spacing:.12em}
.pain-card p{margin-top:10px;font-size:16px;font-weight:700;line-height:1.55;color:var(--ink)}
.pain-note{margin-top:12px;font-size:13px;color:var(--ink-3)}
.pain-foot{margin-top:34px;display:flex;flex-wrap:wrap;align-items:center;gap:16px}

/* 方案卡 */
.plan-main{position:relative;height:100%;display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .2s var(--ease),border-color .2s var(--ease)}
.plan-main:hover{transform:translateY(-4px);border-color:rgba(20,224,160,.42)}
.plan-media{position:relative;aspect-ratio:16/9;overflow:hidden}
.plan-media img{width:100%;height:100%;object-fit:cover}
.plan-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,17,14,.05),rgba(12,26,22,.85))}
.plan-body{padding:28px}
.plan-body h3{font-size:20px;font-weight:700;line-height:1.4;color:#fff}
.plan-body p{margin-top:10px;font-size:15px;color:var(--ink-2)}
.point-list{margin-top:18px;display:flex;flex-direction:column;gap:11px}
.point-list li{position:relative;padding-left:22px;font-size:15px;color:var(--ink-2)}
.point-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:rgba(20,224,160,.2);border:1px solid var(--brand);box-shadow:0 0 10px rgba(20,224,160,.4)}
.plan-body .link-arrow{margin-top:22px}
.plan-side{position:relative;display:flex;gap:16px;height:100%;padding:24px;background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-md);transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.plan-side:hover{transform:translateY(-4px);border-color:rgba(20,224,160,.42);box-shadow:0 20px 44px rgba(0,0,0,.45)}
.side-icon{flex:0 0 48px;width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:rgba(20,224,160,.1);border:1px solid var(--line);color:var(--brand)}
.side-icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.plan-side h3{font-size:18px;font-weight:700;line-height:1.4;color:#fff}
.plan-side p{margin-top:8px;font-size:14px;color:var(--ink-3);line-height:1.7}
.plan-side .link-arrow{margin-top:12px;font-size:14px}

/* 数据区 */
.stats-section{position:relative;overflow:hidden;background:var(--bg-1);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.stats-section::before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(620px 300px at 18% 18%,rgba(20,224,160,.15),transparent 65%),radial-gradient(620px 320px at 84% 78%,rgba(255,122,41,.1),transparent 62%)}
.stats-arc{position:absolute;right:-120px;bottom:-160px;width:460px;height:460px;border-radius:50%;border:1px solid rgba(20,224,160,.16);pointer-events:none}
.stats-arc::after{content:"";position:absolute;inset:56px;border-radius:50%;border:1px solid rgba(111,233,255,.1)}
.stat-card{position:relative;height:100%;padding:30px 18px;text-align:center;background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-md);transition:transform .2s var(--ease),border-color .2s var(--ease)}
.stat-card:hover{transform:translateY(-4px);border-color:rgba(20,224,160,.42)}
.stat-ring{width:124px;height:124px;margin:0 auto 18px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at 50% 38%,rgba(20,224,160,.16),transparent 72%);border:1px solid rgba(255,122,41,.38);box-shadow:0 0 0 6px rgba(255,122,41,.05)}
.stat-value{font-size:52px;font-weight:800;font-variant-numeric:tabular-nums;color:#fff;line-height:1}
.stat-unit{font-size:20px;font-weight:800;color:var(--accent);margin-left:2px}
.stat-label{font-size:14px;color:var(--ink-2)}
@media (max-width:640px){
  .stat-value{font-size:42px}
  .stat-ring{width:104px;height:104px;margin-bottom:14px}
}

/* 资讯列表 */
.news-grid{row-gap:0}
.news-card{position:relative;height:100%;background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-md);overflow:hidden;transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.news-card:hover{transform:translateY(-4px);border-color:rgba(20,224,160,.42);box-shadow:0 22px 50px rgba(0,0,0,.5)}
.news-link{display:block;height:100%;color:inherit}
.news-thumb{aspect-ratio:16/9;overflow:hidden;border-radius:14px;margin:12px 12px 0}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.02)}
.news-body{padding:16px 20px 22px}
.news-body h3{margin-top:10px;font-size:17px;font-weight:700;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{margin-top:8px;font-size:14px;color:var(--ink-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-time{display:block;margin-top:14px;font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.tag{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;border:1px solid var(--line);background:rgba(20,224,160,.08);color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.02em}
.empty-state{padding:52px 24px;text-align:center;background:var(--bg-2);border:1px dashed var(--line);border-radius:var(--r-lg)}
.empty-art{width:72px;height:72px;margin:0 auto 18px;border-radius:50%;border:2px dashed rgba(20,224,160,.4)}
.empty-state p{color:var(--ink-2);margin-bottom:20px}
.news-more{margin-top:38px;text-align:center}

/* CTA 条 */
.cta-strip{position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;padding:30px 34px;border-radius:var(--r-lg);border:1px solid transparent;background:linear-gradient(var(--bg-2),var(--bg-2)) padding-box,var(--grad-brand) border-box}
.cta-strip h3{font-size:20px;font-weight:700;color:#fff;line-height:1.45}
.cta-strip p{margin-top:8px;font-size:14px;color:var(--ink-2)}
.cta-strip .btn{flex-shrink:0}
@media (max-width:640px){.cta-strip{padding:24px 22px}}
.float-cta{position:fixed;right:18px;bottom:18px;z-index:900;display:none;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:999px;background:var(--grad-cta);color:#1A0C02;font-size:15px;font-weight:800;box-shadow:0 14px 34px rgba(255,107,26,.42)}
@media (max-width:640px){.float-cta{display:inline-flex}}

/* 隐私说明 */
.privacy-note{padding:0}
.privacy-note p{font-size:13px;line-height:1.9;color:var(--ink-3)}
.privacy-note a{color:var(--ink-2);text-decoration:underline}
.privacy-note a:hover{color:var(--brand)}

/* FAQ */
.accordion{display:flex;flex-direction:column;gap:14px;background:transparent;border:0}
.accordion-item{position:relative;background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-md);overflow:hidden;transition:border-color .2s var(--ease),background .2s var(--ease)}
.accordion-item:hover{border-color:var(--line)}
.accordion-item.is-active{border-color:var(--line);background:linear-gradient(180deg,rgba(20,224,160,.07),rgba(18,36,32,.92))}
.accordion-item.is-active::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad-brand)}
.accordion-title{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;min-height:58px;padding:20px 24px;text-align:left;font-size:16px;font-weight:700;line-height:1.5;color:var(--ink)}
.acc-icon{position:relative;flex:0 0 18px;width:18px;height:18px}
.acc-icon::before,.acc-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease)}
.acc-icon::before{left:0;top:8px;width:18px;height:2px}
.acc-icon::after{left:8px;top:0;width:2px;height:18px}
.accordion-item.is-active .acc-icon::after{transform:rotate(90deg);opacity:0}
.accordion-content{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.accordion-content p{padding:0 24px 24px;font-size:15px;line-height:1.85;color:var(--ink-2)}
@media (max-width:640px){
  .accordion-title{padding:16px 18px;font-size:15px}
  .accordion-content p{padding:0 18px 20px;font-size:14.5px}
}

/* 弹层与表单 */
.modal-overlay{position:fixed;inset:0;z-index:1190;background:rgba(0,0,0,.68);opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease)}
.modal-overlay.is-open{opacity:1;visibility:visible}
.reveal{display:none;position:fixed;z-index:1200;top:50%;left:50%;width:min(560px,calc(100% - 32px));max-height:88vh;overflow-y:auto;padding:0;margin:0;background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:0 34px 90px rgba(0,0,0,.65);opacity:0;transform:translate(-50%,-46%) scale(.98);transition:opacity .22s var(--ease),transform .22s var(--ease)}
.reveal.is-open{display:block;opacity:1;transform:translate(-50%,-50%) scale(1)}
.reveal::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad-brand);border-radius:24px 24px 0 0}
.modal-head{position:relative;padding:28px 30px 6px}
.modal-head h3{font-size:20px;font-weight:700;color:#fff;line-height:1.45}
.modal-head p{margin-top:8px;font-size:14px;color:var(--ink-3)}
.modal-close{position:absolute;right:16px;top:16px;width:40px;height:40px;border-radius:12px;border:1px solid var(--line-2);color:var(--ink-3);font-size:20px;line-height:1}
.modal-close:hover{color:var(--brand);border-color:var(--line)}
.modal-body{padding:20px 30px 30px}
.field{margin-bottom:18px}
.field label{display:block;margin-bottom:8px;font-size:14px;font-weight:600;color:var(--ink-2)}
.field input,.field textarea{display:block;width:100%;padding:13px 16px;background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-sm);color:var(--ink);font-family:inherit;font-size:15px;line-height:1.6;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.field textarea{min-height:96px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(20,224,160,.18)}
.field.has-error input,.field.has-error textarea{border-color:#FF7A29;box-shadow:0 0 0 3px rgba(255,122,41,.14)}
.field-error{display:none;margin-top:6px;font-size:13px;color:#FF7A29}
.field.has-error .field-error{display:block}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.7}
.check-row input{flex:0 0 18px;width:18px;height:18px;margin-top:4px;accent-color:#14E0A0}
.check-row.has-error{color:#FF7A29}
.form-foot{margin-top:22px}
.form-tip{margin-top:12px;font-size:13px;color:var(--ink-3)}
.form-success{display:none;padding:16px 18px;border-radius:var(--r-sm);border:1px solid var(--line);background:rgba(20,224,160,.08);color:var(--brand);font-size:14px}
.form-success.is-open{display:block}
.btn-primary.is-loading{opacity:.72;pointer-events:none}
@media (max-width:640px){
  .modal-head{padding:24px 20px 4px}
  .modal-body{padding:16px 20px 24px}
}

/* 页脚 */
.site-footer{position:relative;padding:72px 0 28px;background:var(--bg-1);border-top:1px solid var(--line-2)}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad-brand);opacity:.72}
.footer-col{padding-top:0}
.footer-col h4{margin-bottom:16px;font-size:15px;font-weight:700;color:#fff}
.footer-brand p{margin-top:16px;max-width:300px;font-size:14px;line-height:1.85;color:var(--ink-3)}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{display:inline-flex;align-items:center;min-height:32px;font-size:14px;color:var(--ink-2)}
.footer-links a:hover{color:var(--brand)}
.footer-meta{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--ink-2)}
.footer-bottom{margin-top:52px;padding-top:22px;border-top:1px solid var(--line-2);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--ink-3)}
@media (max-width:640px){
  .site-footer{padding:52px 0 22px}
  .footer-bottom{margin-top:34px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --bg-0:#07110E;
  --bg-1:#0C1A16;
  --bg-2:#122420;
  --brand:#14E0A0;
  --brand-2:#6FE9FF;
  --accent:#FF7A29;
  --ink:#E9F5F0;
  --ink-2:#B9CDC6;
  --ink-3:#8AA79E;
  --paper:#F5F9F7;
  --paper-ink:#16221E;
  --paper-ink-2:#45594F;
  --line:rgba(20,224,160,.18);
  --line-2:rgba(255,255,255,.08);
  --grad-brand:linear-gradient(135deg,#0F8F66 0%,#14E0A0 55%,#6FE9FF 100%);
  --grad-cta:linear-gradient(135deg,#FF8A3D 0%,#FF6B1A 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --shadow:0 0 0 1px var(--line),0 18px 50px rgba(0,0,0,.45);
  --shadow-soft:0 0 0 1px var(--line-2),0 12px 34px rgba(0,0,0,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-2)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,h5,h6{margin:0;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){.container{max-width:1280px}}
@media (max-width:640px){.container{padding:0 18px}}

/* ============ 顶部阅读进度条 ============ */
.read-progress{
  position:fixed;
  top:0;left:0;
  height:2px;
  width:0;
  z-index:90;
  background:var(--grad-brand);
  box-shadow:0 0 14px rgba(20,224,160,.55);
  transition:width .12s linear;
}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,17,14,.72);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-2);
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,17,14,.92);
  border-bottom-color:var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  background:var(--grad-brand);
  opacity:.9;
}
.header-inner{
  display:flex;
  align-items:center;
  gap:22px;
  min-height:74px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}
.logo-mark{
  position:relative;
  width:36px;height:36px;
  border-radius:50%;
  border:1px solid var(--line);
  background:radial-gradient(circle at 30% 25%,rgba(20,224,160,.45),rgba(20,224,160,.05) 62%,transparent 70%);
  box-shadow:0 0 18px rgba(20,224,160,.28);
}
.logo-mark::after{
  content:"";
  position:absolute;
  inset:6px;
  border-radius:50%;
  border:1.5px solid transparent;
  border-top-color:var(--brand-2);
  border-right-color:var(--brand);
  transform:rotate(-24deg);
}
.logo-text{
  font-size:18px;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--ink);
  white-space:nowrap;
}
.logo-text em{font-style:normal;color:var(--brand)}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.main-nav a{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  border-radius:999px;
  font-size:14.5px;
  font-weight:600;
  color:var(--ink-2);
  transition:color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:6px;
  height:2px;
  border-radius:2px;
  background:var(--grad-brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{
  color:var(--brand);
  padding-left:26px;
  background:rgba(20,224,160,.08);
  box-shadow:0 6px 18px rgba(20,224,160,.28);
}
.main-nav a.is-active::after{transform:scaleX(1)}
.main-nav a.is-active::before{
  content:"";
  position:absolute;
  left:12px;top:50%;
  width:6px;height:6px;
  margin-top:-3px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px rgba(20,224,160,.9);
}
.header-cta{flex:0 0 auto}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  color:var(--ink);
  background:var(--bg-2);
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--brand);
  border-radius:2px;
  position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:18px;height:2px;
  background:var(--brand);
  border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  background:var(--grad-cta);
  color:#251002;
  box-shadow:0 10px 26px rgba(255,122,41,.28);
}
.btn-primary:hover{
  color:#251002;
  transform:translateY(-2px);
  filter:brightness(1.06);
  box-shadow:0 14px 30px rgba(255,122,41,.36);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 14px rgba(255,122,41,.24)}
.btn-ghost{
  background:transparent;
  border-color:var(--line);
  color:var(--brand);
}
.btn-ghost:hover{
  color:var(--brand-2);
  border-color:rgba(20,224,160,.45);
  background:rgba(20,224,160,.07);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.5;box-shadow:none;cursor:not-allowed;transform:none}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-weight:700;
  font-size:14.5px;
}
.text-link i{
  font-style:normal;
  transition:transform .2s var(--ease);
}
.text-link:hover i{transform:translateX(4px)}

/* ============ 抽屉导航 ============ */
.drawer{
  position:fixed;
  inset:0;
  z-index:80;
  background:rgba(0,0,0,.6);
  opacity:0;
  visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;
  top:0;right:0;
  width:min(320px,86vw);
  height:100%;
  background:var(--bg-1);
  border-left:1px solid var(--line);
  padding:22px 20px 28px;
  display:flex;
  flex-direction:column;
  gap:6px;
  transform:translateX(100%);
  transition:transform .28s var(--ease);
  overflow-y:auto;
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-panel::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:var(--grad-brand);
}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:12px;
}
.drawer-panel a.drawer-link{
  display:flex;
  align-items:center;
  min-height:48px;
  padding:0 14px;
  border-radius:var(--r-sm);
  color:var(--ink-2);
  font-weight:600;
  border:1px solid transparent;
}
.drawer-panel a.drawer-link:hover,
.drawer-panel a.drawer-link.is-active{
  color:var(--brand);
  background:rgba(20,224,160,.08);
  border-color:var(--line);
}
.drawer-foot{margin-top:auto;padding-top:18px}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;
  padding:56px 0 52px;
  background:
    radial-gradient(820px 360px at 12% -20%,rgba(20,224,160,.18),transparent 70%),
    radial-gradient(620px 300px at 92% 10%,rgba(111,233,255,.10),transparent 72%),
    var(--bg-1);
  border-bottom:1px solid var(--line-2);
  overflow:hidden;
}
.article-hero::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:var(--grad-brand);
  opacity:.65;
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin:0 0 22px;
  padding:0;
  list-style:none;
  font-size:13.5px;
  color:var(--ink-3);
}
.crumbs li{display:inline-flex;align-items:center;gap:10px;color:var(--ink-3)}
.crumbs li::after{
  content:"";
  width:1px;height:12px;
  background:rgba(255,255,255,.18);
}
.crumbs li:last-child::after{display:none}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--brand)}
.crumbs .current{color:var(--brand)}
.article-title{
  font-size:40px;
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.01em;
  color:var(--ink);
  max-width:900px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-top:22px;
}
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  border:1px solid var(--line);
  background:rgba(20,224,160,.08);
  color:var(--brand);
}
.meta-item{
  font-size:13.5px;
  color:var(--ink-3);
  font-variant-numeric:tabular-nums;
}
.meta-item time{color:var(--ink-2)}
.hero-actions{margin-top:26px}

/* ============ 布局 ============ */
.main-wrap{
  padding:52px 0 96px;
  background:var(--bg-0);
}
.layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:32px;
  align-items:start;
}
@media (max-width:1024px){
  .layout{grid-template-columns:minmax(0,1fr)}
}

/* ============ 阅读纸 ============ */
.reading-paper{
  background:var(--paper);
  color:var(--paper-ink);
  border-radius:var(--r-lg);
  padding:44px;
  box-shadow:var(--shadow);
  max-width:880px;
  margin:0 auto;
}
@media (max-width:640px){
  .reading-paper{padding:22px;border-radius:var(--r-md)}
}
.article-body{
  font-size:17px;
  line-height:1.9;
  color:var(--paper-ink);
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  position:relative;
  margin:2em 0 .7em;
  padding-left:16px;
  font-size:26px;
  font-weight:700;
  line-height:1.4;
  color:#0F2A21;
  scroll-margin-top:110px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.3em;
  width:4px;height:1.05em;
  border-radius:2px;
  background:linear-gradient(180deg,#0F8F66,#6FE9FF);
}
.article-body h3{
  margin:1.7em 0 .6em;
  font-size:20px;
  font-weight:700;
  line-height:1.5;
  color:#123A2D;
  scroll-margin-top:110px;
}
.article-body h4{
  margin:1.5em 0 .5em;
  font-size:17px;
  font-weight:700;
  color:#1B4A3A;
}
.article-body p{margin:0 0 1.4em}
.article-body ul,
.article-body ol{margin:0 0 1.4em;padding-left:1.35em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.55em 0}
.article-body ul li::marker{color:#0F8F66}
.article-body ol li::marker{color:#0F8F66;font-weight:700;font-variant-numeric:tabular-nums}
.article-body blockquote{
  position:relative;
  margin:1.6em 0;
  padding:18px 22px 18px 24px;
  border-radius:0 14px 14px 0;
  background:rgba(20,224,160,.08);
  color:#28443A;
}
.article-body blockquote::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,#0F8F66,#6FE9FF);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  border-radius:14px;
  margin:1.5em auto;
  box-shadow:0 12px 32px rgba(16,40,33,.16);
}
.article-body figure{margin:1.7em 0}
.article-body figcaption{
  margin-top:10px;
  font-size:12px;
  line-height:1.7;
  text-align:center;
  color:var(--paper-ink-2);
}
.article-body table{
  display:block;
  width:100%;
  overflow-x:auto;
  border-collapse:collapse;
  margin:1.7em 0;
  border-radius:14px;
  font-size:15px;
  box-shadow:0 0 0 1px rgba(22,34,30,.14);
}
.article-body th,
.article-body td{
  padding:12px 16px;
  text-align:left;
  white-space:nowrap;
  border-bottom:1px solid rgba(22,34,30,.1);
}
.article-body th{background:rgba(20,224,160,.14);font-weight:700;color:#12402F}
.article-body tr:last-child td{border-bottom:0}
.article-body a{
  color:#0C7D5A;
  text-decoration:underline;
  text-decoration-color:rgba(12,125,90,.35);
  text-underline-offset:3px;
}
.article-body a:hover{color:#0F8F66;text-decoration-color:currentColor}
.article-body hr{
  height:1px;
  border:0;
  margin:2.2em 0;
  background:rgba(22,34,30,.14);
}
.article-body code{
  padding:2px 6px;
  border-radius:6px;
  background:#E2EDE8;
  color:#0F3A2C;
  font-size:.92em;
}
.article-body pre{
  margin:1.6em 0;
  padding:18px 20px;
  border-radius:14px;
  background:#0C1A16;
  color:#D8F3E8;
  overflow-x:auto;
  font-size:14px;
  line-height:1.7;
}
.article-body pre code{background:none;color:inherit;padding:0}

/* ============ 空态 ============ */
.empty-state{
  text-align:center;
  padding:44px 20px;
  border-radius:var(--r-md);
  background:rgba(18,36,32,.05);
  box-shadow:inset 0 0 0 1px rgba(22,34,30,.1);
}
.empty-title{
  font-size:20px;
  font-weight:700;
  color:#12402F;
  margin-bottom:10px;
}
.empty-desc{
  font-size:14.5px;
  color:var(--paper-ink-2);
  margin-bottom:22px;
}

/* ============ 正文尾部入口 ============ */
.paper-foot{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
  justify-content:space-between;
  margin-top:32px;
  padding-top:22px;
  border-top:1px solid rgba(22,34,30,.12);
}
.paper-foot .note{font-size:13px;color:var(--paper-ink-2)}
.btn-paper-ghost{
  background:transparent;
  border:1px solid rgba(15,143,102,.35);
  color:#0C7D5A;
}
.btn-paper-ghost:hover{
  color:#0F8F66;
  border-color:#14A97A;
  background:rgba(20,224,160,.1);
  transform:translateY(-2px);
}

/* ============ 侧栏 ============ */
.side-col{
  position:sticky;
  top:100px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
@media (max-width:1024px){
  .side-col{position:static;top:auto}
}
.side-card{
  border-radius:var(--r-md);
  background:var(--bg-1);
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-soft);
  padding:22px;
}
.side-card h3{
  font-size:15px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:8px;
}
.side-card h3::before{
  content:"";
  width:8px;height:8px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px rgba(20,224,160,.8);
}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;
  padding:8px 0 8px 12px;
  border-left:2px solid var(--line-2);
  font-size:14px;
  line-height:1.5;
  color:var(--ink-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),padding-left .2s var(--ease);
}
.toc-list a.is-sub{padding-left:24px;font-size:13.5px;color:var(--ink-3)}
.toc-list a:hover{color:var(--ink);border-left-color:var(--line)}
.toc-list a.is-current{
  color:var(--brand);
  border-left-color:var(--brand);
  padding-left:16px;
}
.toc-list a.is-sub.is-current{padding-left:28px}
.side-links{display:flex;flex-direction:column;gap:8px}
.side-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:44px;
  padding:0 14px;
  border-radius:var(--r-sm);
  background:var(--bg-2);
  border:1px solid var(--line-2);
  color:var(--ink-2);
  font-size:14px;
  font-weight:600;
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.side-links a:hover{
  color:var(--brand);
  border-color:rgba(20,224,160,.42);
  transform:translateY(-2px);
}
.side-links a i{font-style:normal;color:var(--brand);transition:transform .2s var(--ease)}
.side-links a:hover i{transform:translateX(4px)}

/* ============ 通用板块 ============ */
.section{padding:72px 0}
.section-head{max-width:660px;margin-bottom:36px}
.section-head h2{
  font-size:28px;
  font-weight:700;
  color:var(--ink);
}
.section-head h2 span{color:var(--brand)}
.section-head p{
  margin-top:12px;
  font-size:15px;
  color:var(--ink-2);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(20,224,160,.07);
  font-size:12.5px;
  font-weight:600;
  color:var(--brand);
  letter-spacing:.04em;
}

/* ============ 相关推荐 ============ */
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
@media (max-width:1024px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.rel-grid{grid-template-columns:1fr;gap:16px}}
.rel-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-md);
  background:var(--bg-1);
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-soft);
  overflow:hidden;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.rel-card:hover{
  transform:translateY(-4px);
  border-color:rgba(20,224,160,.42);
  box-shadow:0 0 0 1px var(--line),0 22px 48px rgba(0,0,0,.5);
}
.rel-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-2);
}
.rel-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .3s var(--ease);
}
.rel-card:hover .rel-thumb img{transform:scale(1.02)}
.rel-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.tag{
  display:inline-flex;
  align-items:center;
  align-self:flex-start;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  color:var(--brand);
  border:1px solid var(--line);
  background:rgba(20,224,160,.08);
}
.rel-card h3{
  font-size:17px;
  font-weight:700;
  line-height:1.5;
  color:var(--ink);
}
.rel-card p{
  font-size:14px;
  line-height:1.75;
  color:var(--ink-3);
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--ink-3);
  font-variant-numeric:tabular-nums;
}

/* ============ FAQ ============ */
.accordion{
  border:0;
  background:transparent;
}
.accordion-item{
  margin-bottom:14px;
  border-radius:var(--r-md);
  background:var(--bg-1);
  border:1px solid var(--line-2);
  overflow:hidden;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.accordion-item.is-active{
  border-color:rgba(20,224,160,.42);
  background:linear-gradient(180deg,rgba(20,224,160,.08),rgba(12,26,22,.9));
}
.accordion-title{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  font-size:16px;
  font-weight:700;
  color:var(--ink) !important;
  border:0;
  background:transparent;
  transition:color .2s var(--ease);
}
.accordion-title:hover{color:var(--brand) !important}
.accordion-title::before{
  content:"+";
  position:absolute;
  right:22px;
  font-size:20px;
  font-weight:700;
  color:var(--brand);
  transition:transform .2s var(--ease);
}
.accordion-item.is-active .accordion-title::before{content:"−"}
.accordion-content{
  display:none;
  padding:0 22px 20px 22px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--ink-2);
  border:0 !important;
  background:transparent !important;
}
.accordion-item.is-active .accordion-content{display:block}

/* ============ CTA 条 ============ */
.cta-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  padding:28px 32px;
  border-radius:var(--r-lg);
  border:1px solid transparent;
  background:
    linear-gradient(var(--bg-1),var(--bg-1)) padding-box,
    var(--grad-brand) border-box;
  box-shadow:0 20px 50px rgba(0,0,0,.42);
}
.cta-bar h3{
  font-size:22px;
  font-weight:700;
  color:var(--ink);
}
.cta-bar p{
  margin-top:8px;
  font-size:14px;
  color:var(--ink-3);
}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
@media (max-width:640px){
  .cta-bar{padding:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--bg-1);
  border-top:1px solid var(--line-2);
  padding:64px 0 28px;
  margin-top:0;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:var(--grad-brand);
  opacity:.85;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:14px;
}
.footer-brand .logo-text{font-size:17px}
.footer-brand p{
  margin-top:12px;
  font-size:13.5px;
  line-height:1.85;
  color:var(--ink-3);
  max-width:280px;
}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-links a{
  display:inline-block;
  font-size:14px;
  color:var(--ink-2);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-links a:hover{color:var(--brand);transform:translateX(3px)}
.footer-meta{
  display:flex;
  flex-direction:column;
  gap:8px;
  font-size:13.5px;
  color:var(--ink-3);
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid var(--line-2);
  font-size:13px;
  color:var(--ink-3);
}

/* ============ 弹层表单 ============ */
.reveal-overlay{background:rgba(0,0,0,.7)}
.reveal{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--bg-1);
  color:var(--ink);
  box-shadow:var(--shadow);
  padding:30px;
  overflow:hidden;
}
.reveal::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:var(--grad-brand);
}
.reveal h3{
  font-size:21px;
  font-weight:700;
  margin-bottom:8px;
}
.reveal .lead-note{
  font-size:13.5px;
  color:var(--ink-3);
  margin-bottom:20px;
}
.close-button{
  position:absolute;
  top:12px;right:14px;
  width:34px;height:34px;
  border-radius:50%;
  color:var(--ink-3);
  font-size:20px;
  line-height:1;
  background:rgba(255,255,255,.04);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.close-button:hover{color:var(--brand);background:rgba(20,224,160,.12)}
.field{margin-bottom:16px}
.field label{
  display:block;
  margin-bottom:8px;
  font-size:13.5px;
  font-weight:600;
  color:var(--ink-2);
}
.field input[type="text"],
.field input[type="tel"],
.field textarea{
  width:100%;
  min-height:46px;
  padding:12px 14px;
  border-radius:var(--r-sm);
  border:1px solid var(--line-2);
  background:var(--bg-2);
  color:var(--ink);
  font-size:14.5px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input::placeholder,
.field textarea::placeholder{color:var(--ink-3)}
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(20,224,160,.2);
}
.field.has-error input,
.field.has-error textarea{border-color:var(--accent)}
.field-error{
  display:none;
  margin-top:6px;
  font-size:12.5px;
  color:var(--accent);
}
.field.has-error .field-error{display:block}
.check-row{
  display:flex;
  align-items:flex-start;
  gap:10px;
  margin:4px 0 20px;
  font-size:13px;
  line-height:1.7;
  color:var(--ink-3);
}
.check-row input{margin-top:4px;width:16px;height:16px;accent-color:#14E0A0}
.check-row a{color:var(--brand)}
.reveal-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.reveal-actions .submit-state{font-size:13px;color:var(--ink-3)}

/* ============ 移动悬浮按钮 ============ */
.float-cta{
  position:fixed;
  right:18px;bottom:18px;
  z-index:55;
  display:none;
  min-height:48px;
  padding:0 20px;
  border-radius:999px;
  background:var(--grad-cta);
  color:#251002;
  font-weight:700;
  font-size:14px;
  box-shadow:0 14px 30px rgba(255,122,41,.35);
}
@media (max-width:768px){.float-cta{display:inline-flex;align-items:center}}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{min-height:66px;gap:12px}
  .article-title{font-size:32px}
  .section{padding:56px 0}
  .main-wrap{padding:36px 0 72px}
}
@media (max-width:640px){
  .article-title{font-size:28px;line-height:1.32}
  .article-hero{padding:40px 0 36px}
  .section-head h2{font-size:22px}
  .cta-bar h3{font-size:19px}
  .site-footer{padding:48px 0 24px}
  .footer-brand p{max-width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
}

/* roulang page: category1 */
:root{
  --bg-0:#07110E;
  --bg-1:#0C1A16;
  --bg-2:#122420;
  --brand:#14E0A0;
  --brand-2:#6FE9FF;
  --accent:#FF7A29;
  --ink:#E9F5F0;
  --ink-2:#B9CDC6;
  --ink-3:#8AA79E;
  --paper:#F5F9F7;
  --paper-ink:#16221E;
  --paper-ink-2:#45594F;
  --line:rgba(20,224,160,.18);
  --line-2:rgba(255,255,255,.08);
  --grad-brand:linear-gradient(135deg,#0F8F66 0%,#14E0A0 55%,#6FE9FF 100%);
  --grad-cta:linear-gradient(135deg,#FF8A3D 0%,#FF6B1A 100%);
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-card:0 0 0 1px var(--line),0 18px 50px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color 200ms var(--ease)}
a:hover{color:var(--brand-2)}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--ink)}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
::selection{background:rgba(20,224,160,.28);color:#fff}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px}

/* ============ 容器与栅格 ============ */
.grid-container,.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1440px){
  .grid-container,.container{max-width:1280px}
}
.section{padding:96px 0;position:relative}
.section--tight{padding:72px 0}
.section--paper{background:var(--bg-1)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:28px;line-height:1.3;letter-spacing:-.005em}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--brand);
  text-transform:uppercase;margin-bottom:14px;font-weight:700;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--grad-brand);border-radius:2px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  cursor:pointer;text-decoration:none;
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),background-color 200ms var(--ease),border-color 200ms var(--ease),color 200ms var(--ease);
}
.btn-primary{
  background-image:var(--grad-cta);color:#190A02;
  box-shadow:0 10px 26px rgba(255,122,41,.28);
}
.btn-primary:hover{color:#190A02;transform:translateY(-2px);box-shadow:0 14px 32px rgba(255,122,41,.42)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px rgba(255,122,41,.3)}
.btn-ghost{
  background:rgba(20,224,160,.04);
  border-color:var(--line);color:var(--brand);
}
.btn-ghost:hover{border-color:rgba(20,224,160,.5);color:var(--brand-2);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(20,224,160,.25),0 12px 30px rgba(20,224,160,.14)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:44px;padding:0 20px;font-size:14px}
.btn[disabled],.btn.is-loading{opacity:.6;box-shadow:none;pointer-events:none}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--brand);font-weight:700;font-size:15px;
}
.text-link i{transition:transform 200ms var(--ease)}
.text-link:hover i{transform:translateX(4px)}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,17,14,.72);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-2);
  transition:background-color 240ms var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--grad-brand);opacity:.9;
}
.site-header.is-scrolled{background:rgba(7,17,14,.92)}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:72px;
}
.site-logo{display:inline-flex;align-items:center;gap:12px;color:var(--ink)}
.site-logo:hover{color:var(--ink)}
.logo-mark{
  width:34px;height:34px;border-radius:50%;
  background:var(--grad-brand);
  position:relative;flex:0 0 34px;
  box-shadow:0 0 0 1px rgba(20,224,160,.4),0 0 22px rgba(20,224,160,.4);
}
.logo-mark::after{
  content:"";position:absolute;inset:9px;border-radius:50%;
  border:2px solid rgba(7,17,14,.7);
}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--brand);margin-left:2px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{
  position:relative;
  display:inline-flex;align-items:center;
  min-height:44px;padding:0 14px;
  font-size:15px;color:var(--ink-2);font-weight:600;
  border-radius:var(--radius-sm);
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--grad-brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;opacity:0;
  transition:transform 220ms var(--ease),opacity 220ms var(--ease);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1);opacity:.7}
.main-nav a.is-active{color:var(--brand)}
.main-nav a.is-active::before{
  content:"";position:absolute;left:2px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 10px rgba(20,224,160,.9);
}
.main-nav a.is-active::after{
  transform:scaleX(1);opacity:1;
  box-shadow:0 6px 18px rgba(20,224,160,.35);
}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:rgba(20,224,160,.05);
  color:var(--brand);font-size:18px;cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:rgba(20,224,160,.45)}

/* off-canvas 抽屉 */
.off-canvas{background:var(--bg-1);border-left:1px solid var(--line)}
.off-canvas .drawer-inner{padding:22px 20px 32px;display:flex;flex-direction:column;height:100%}
.drawer-top{height:2px;background:var(--grad-brand);margin:-22px -20px 20px}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:24px}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;
  border-radius:var(--radius-sm);border:1px solid transparent;
  color:var(--ink-2);font-weight:600;
}
.drawer-nav a:hover{border-color:var(--line);color:var(--ink)}
.drawer-nav a.is-active{color:var(--brand);border-color:var(--line);background:rgba(20,224,160,.06)}
.drawer-foot{margin-top:auto}
.off-canvas-content{overflow:visible}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  padding:76px 0 40px;
  background:
    radial-gradient(900px 420px at 12% -10%,rgba(20,224,160,.18),transparent 60%),
    radial-gradient(700px 380px at 96% 8%,rgba(111,233,255,.12),transparent 62%),
    var(--bg-0);
}
.page-hero::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:var(--grad-brand);opacity:.6;
}
.hero-copy h1{
  font-size:40px;line-height:1.22;letter-spacing:-.01em;font-weight:800;
  margin-bottom:18px;
}
.hero-sub{color:var(--ink-2);font-size:17px;max-width:520px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-figure{
  position:relative;margin:0;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:0 0 0 1px rgba(20,224,160,.1),0 24px 60px rgba(0,0,0,.55);
}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,17,14,.72) 0%,rgba(7,17,14,.28) 46%,rgba(7,17,14,.06) 100%);
}
.hero-figure figcaption{
  position:absolute;left:18px;bottom:14px;z-index:2;
  font-size:13px;color:var(--ink-2);
}
.hero-quick{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;
}
.mini-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:rgba(20,224,160,.07);
  font-size:13px;color:var(--ink-2);
}
.mini-badge b{color:var(--brand);font-weight:800;font-variant-numeric:tabular-nums}

/* 页内锚点 */
.anchor-tabs{
  display:flex;gap:6px;overflow-x:auto;margin-top:52px;
  border-bottom:1px solid var(--line-2);
  scrollbar-width:none;
}
.anchor-tabs::-webkit-scrollbar{display:none}
.anchor-tabs a{
  position:relative;flex:0 0 auto;
  display:inline-flex;align-items:center;min-height:48px;padding:0 16px;
  color:var(--ink-3);font-size:14px;font-weight:600;white-space:nowrap;
}
.anchor-tabs a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;
  background:var(--grad-brand);border-radius:2px;transform:scaleX(0);
  transition:transform 220ms var(--ease);
}
.anchor-tabs a:hover{color:var(--ink)}
.anchor-tabs a.is-active{color:var(--brand)}
.anchor-tabs a.is-active::after{transform:scaleX(1);box-shadow:0 6px 18px rgba(20,224,160,.35)}

/* ============ 步骤条 ============ */
.steps-track{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  position:relative;margin-top:8px;
}
.steps-track::before{
  content:"";position:absolute;left:6%;right:6%;top:34px;height:1px;
  background:linear-gradient(90deg,rgba(20,224,160,.05),rgba(20,224,160,.55),rgba(111,233,255,.45),rgba(20,224,160,.05));
}
.step-card{
  position:relative;
  background:var(--bg-2);
  border:1px solid var(--line-2);
  border-radius:var(--radius-md);
  padding:26px 22px 24px;
  transition:transform 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.step-card:hover{
  transform:translateY(-4px);
  border-color:rgba(20,224,160,.42);
  box-shadow:0 0 0 1px rgba(20,224,160,.28),0 18px 44px rgba(0,0,0,.5);
}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:68px;height:68px;border-radius:50%;
  border:2px solid rgba(20,224,160,.45);
  color:var(--brand);font-size:30px;font-weight:800;
  font-variant-numeric:tabular-nums;
  background:radial-gradient(circle at 50% 50%,rgba(20,224,160,.16),transparent 70%);
  box-shadow:0 0 24px rgba(20,224,160,.22);
  margin-bottom:18px;
}
.step-card h3{font-size:20px;line-height:1.35;margin-bottom:10px}
.step-card p{font-size:15px;color:var(--ink-2);margin:0}
.step-tag{
  position:absolute;right:18px;top:20px;
  font-size:12px;color:var(--accent);
  border:1px solid rgba(255,122,41,.4);
  background:rgba(255,122,41,.1);
  padding:2px 10px;border-radius:var(--radius-pill);
}

/* ============ 横向条卡 ============ */
.bar-card{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--bg-1);
  border:1px solid var(--line-2);
  border-radius:var(--radius-md);
  padding:22px 24px;
  transition:transform 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.bar-card:hover{transform:translateY(-4px);border-color:rgba(20,224,160,.42);box-shadow:0 0 0 1px rgba(20,224,160,.22),0 18px 44px rgba(0,0,0,.45)}
.bar-icon{
  flex:0 0 46px;width:46px;height:46px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(20,224,160,.1);border:1px solid var(--line);
  color:var(--brand);font-size:18px;
}
.bar-card h3{font-size:18px;margin-bottom:6px}
.bar-card p{font-size:15px;color:var(--ink-2);margin:0}

/* ============ 对照卡 ============ */
.compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.compare-card{
  background:var(--bg-2);border:1px solid var(--line-2);
  border-radius:var(--radius-md);overflow:hidden;
  transition:transform 200ms var(--ease),border-color 200ms var(--ease);
}
.compare-card:hover{transform:translateY(-4px);border-color:rgba(20,224,160,.4)}
.compare-row{display:flex;gap:16px;padding:18px 22px;border-bottom:1px solid var(--line-2)}
.compare-row:last-child{border-bottom:0}
.compare-row .k{
  flex:0 0 116px;font-size:14px;color:var(--accent);font-weight:700;
}
.compare-row .v{font-size:15px;color:var(--ink-2)}
.compare-head{
  padding:16px 22px;font-size:14px;font-weight:700;letter-spacing:.04em;
  color:var(--brand);background:rgba(20,224,160,.06);
  border-bottom:1px solid var(--line);
}

/* ============ 数据徽章 ============ */
.stats-band{
  position:relative;overflow:hidden;
  background:radial-gradient(600px 300px at 20% 20%,rgba(20,224,160,.16),transparent 65%),var(--bg-1);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stats-band::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad-brand);opacity:.55}
.stat-item{text-align:left;padding:10px 0}
.stat-value{
  display:flex;align-items:baseline;gap:6px;
  font-size:56px;font-weight:800;line-height:1;
  font-variant-numeric:tabular-nums;
  color:var(--ink);
  text-shadow:0 0 30px rgba(20,224,160,.25);
}
.stat-value .unit{font-size:16px;font-weight:700;color:var(--brand)}
.stat-item p{margin-top:10px;font-size:14px;color:var(--ink-3)}
.stat-ring{
  display:inline-block;padding:14px 20px;border-radius:var(--radius-md);
  border:1px solid rgba(255,122,41,.35);
  background:rgba(255,122,41,.06);
}

/* ============ FAQ ============ */
.accordion{border:0;background:transparent}
.accordion .accordion-item{
  border:1px solid var(--line-2);border-radius:var(--radius-md);
  background:var(--bg-1);margin-bottom:14px;overflow:hidden;
  transition:border-color 200ms var(--ease),background-color 200ms var(--ease);
}
.accordion .accordion-item:hover{border-color:rgba(20,224,160,.35)}
.accordion .accordion-title{
  position:relative;display:block;
  padding:20px 56px 20px 22px;
  font-size:16px;font-weight:700;color:var(--ink);
  border:0;background:transparent;line-height:1.5;
}
.accordion .accordion-title:hover{color:var(--brand)}
.accordion .accordion-title::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;line-height:1;color:var(--brand);font-weight:400;
}
.accordion .accordion-item.is-active{border-color:rgba(20,224,160,.45);background:linear-gradient(180deg,rgba(20,224,160,.07),rgba(20,224,160,0))}
.accordion .accordion-item.is-active .accordion-title::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad-brand);
}
.accordion .accordion-item.is-active .accordion-title::after{content:"−"}
.accordion .accordion-content{
  padding:0 22px 20px;color:var(--ink-2);font-size:15px;border:0;background:transparent;
}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;border-radius:var(--radius-lg);
  padding:36px 34px;
  background:
    linear-gradient(var(--bg-1),var(--bg-1)) padding-box,
    var(--grad-brand) border-box;
  border:1px solid transparent;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  box-shadow:0 24px 60px rgba(0,0,0,.5);
}
.cta-band h2{font-size:24px;margin-bottom:8px}
.cta-band p{color:var(--ink-2);font-size:15px;margin:0;max-width:560px}
.privacy-note{margin-top:18px;font-size:13px;color:var(--ink-3);line-height:1.7}
.privacy-note a{color:var(--ink-2);text-decoration:underline}

/* ============ 站内互链卡 ============ */
.link-card{
  display:block;overflow:hidden;
  background:var(--bg-1);border:1px solid var(--line-2);
  border-radius:var(--radius-md);color:var(--ink);height:100%;
  transition:transform 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.link-card:hover{color:var(--ink);transform:translateY(-4px);border-color:rgba(20,224,160,.42);box-shadow:0 0 0 1px rgba(20,224,160,.22),0 20px 46px rgba(0,0,0,.5)}
.link-card figure{margin:0;overflow:hidden}
.link-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 300ms var(--ease)}
.link-card:hover img{transform:scale(1.02)}
.link-card .link-body{padding:18px 20px 22px}
.link-card .tag{
  display:inline-block;font-size:12px;color:var(--brand);
  border:1px solid var(--line);background:rgba(20,224,160,.08);
  border-radius:var(--radius-pill);padding:2px 10px;margin-bottom:10px;
}
.link-card h3{font-size:17px;margin-bottom:8px}
.link-card p{font-size:14px;color:var(--ink-2);margin:0}

/* ============ 表单 ============ */
.reveal.lead-modal{
  border-radius:var(--radius-lg);
  background:var(--bg-1);
  border:1px solid var(--line);
  box-shadow:0 30px 80px rgba(0,0,0,.6);
  padding:0;overflow:hidden;
}
.reveal.lead-modal::before{content:"";display:block;height:2px;background:var(--grad-brand)}
.modal-body{padding:30px 30px 26px}
.modal-body h3{font-size:22px;margin-bottom:10px}
.modal-body .modal-sub{font-size:14px;color:var(--ink-2);margin-bottom:22px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-2);margin-bottom:8px}
.field .req{color:var(--accent);margin-left:4px}
.field input[type="text"],
.field input[type="tel"],
.field textarea{
  width:100%;min-height:48px;padding:12px 16px;
  background:var(--bg-2);border:1px solid var(--line-2);
  border-radius:var(--radius-sm);color:var(--ink);font-size:15px;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease),background-color 200ms var(--ease);
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(20,224,160,.22);
  background:var(--bg-1);
}
.field.has-error input,.field.has-error textarea{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,122,41,.16)}
.field-error{display:none;margin-top:6px;font-size:13px;color:var(--accent)}
.field.has-error .field-error{display:block}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-3)}
.check-row input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand)}
.check-row.has-error{color:var(--accent)}
.modal-close{
  position:absolute;right:16px;top:14px;z-index:3;
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line-2);background:rgba(255,255,255,.03);
  color:var(--ink-3);cursor:pointer;font-size:16px;
}
.modal-close:hover{color:var(--ink);border-color:var(--line)}

/* 悬浮按钮 */
.float-cta{
  position:fixed;right:18px;bottom:18px;z-index:55;
  display:none;align-items:center;gap:8px;
  min-height:52px;padding:0 20px;border-radius:var(--radius-pill);
  background-image:var(--grad-cta);color:#190A02;font-weight:800;font-size:15px;
  border:0;box-shadow:0 14px 34px rgba(255,122,41,.4);cursor:pointer;
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--bg-1);
  padding:72px 0 30px;
  margin-top:20px;
}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad-brand)}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--ink)}
.footer-col p{font-size:14px;color:var(--ink-3);max-width:300px}
.footer-brand .logo-text{font-size:17px;display:inline-block;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--ink-3)}
.footer-links a:hover{color:var(--brand)}
.footer-meta{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--ink-3)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line-2);
  font-size:13px;color:var(--ink-3);
}

/* ============ 通用小件 ============ */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:rgba(20,224,160,.07);
  font-size:12px;color:var(--brand);font-weight:700;
}
.lead-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.lead-list li{position:relative;padding-left:20px;font-size:15px;color:var(--ink-2)}
.lead-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--grad-brand);box-shadow:0 0 10px rgba(20,224,160,.5);
}
.anchor-offset{scroll-margin-top:96px}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .hero-copy h1{font-size:34px}
  .steps-track{grid-template-columns:repeat(2,1fr)}
  .steps-track::before{display:none}
  .compare-grid{grid-template-columns:1fr}
  .stat-value{font-size:46px}
}
@media (max-width:640px){
  .grid-container,.container{padding-left:18px;padding-right:18px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .page-hero{padding:52px 0 28px}
  .hero-copy h1{font-size:28px;line-height:1.28}
  .hero-sub{font-size:15.5px}
  .section-head h2{font-size:22px}
  .steps-track{grid-template-columns:1fr;gap:16px}
  .step-card{padding:22px 18px}
  .step-num{width:56px;height:56px;font-size:24px}
  .stat-value{font-size:38px}
  .cta-band{padding:26px 20px}
  .cta-band h2{font-size:20px}
  .float-cta{display:inline-flex}
  .footer-bottom{flex-direction:column}
  .header-actions .btn-sm{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --bg-0:#07110E; --bg-1:#0C1A16; --bg-2:#122420;
  --brand:#14E0A0; --brand-2:#6FE9FF; --accent:#FF7A29;
  --ink:#E9F5F0; --ink-2:#B9CDC6; --ink-3:#8AA79E;
  --paper:#F5F9F7; --paper-ink:#16221E; --paper-ink-2:#45594F;
  --line:rgba(20,224,160,.18); --line-2:rgba(255,255,255,.08);
  --grad-brand:linear-gradient(135deg,#0F8F66,#14E0A0,#6FE9FF);
  --grad-cta:linear-gradient(135deg,#FF8A3D,#FF6B1A);
  --r-lg:24px; --r-md:18px; --r-sm:12px;
  --shadow:0 0 0 1px var(--line), 0 18px 50px rgba(0,0,0,.45);
  --t:200ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg-0); color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  font-size:16px; line-height:1.8; -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--t),opacity var(--t)}
a:hover{color:var(--brand-2)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0 0 14px;line-height:1.28;color:var(--ink)}
h1{font-size:40px;font-weight:800;letter-spacing:-.01em}
h2{font-size:28px;font-weight:700}
h3{font-size:20px;font-weight:700}
button,input,textarea,select{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}
.num{font-variant-numeric:tabular-nums;font-weight:800}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.grid-container{padding-left:24px;padding-right:24px}
@media (min-width:1440px){.container{max-width:1280px}}
@media (max-width:640px){.container{padding:0 18px}}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky; top:0; z-index:80;
  background:rgba(7,17,14,.72);
  -webkit-backdrop-filter:blur(12px); backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-2);
  transition:background var(--t),border-color var(--t);
}
.site-header.scrolled{background:rgba(7,17,14,.94);border-bottom-color:var(--line)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--grad-brand);opacity:.85;pointer-events:none}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px}
.logo:hover{color:var(--ink)}
.logo-mark{position:relative;width:30px;height:30px;border-radius:50%;flex:0 0 30px;border:2px solid var(--brand);box-shadow:0 0 16px rgba(20,224,160,.45)}
.logo-mark::after{content:"";position:absolute;left:50%;top:50%;width:11px;height:11px;transform:translate(-50%,-50%);border-radius:50%;background:var(--brand-2);box-shadow:0 0 10px rgba(111,233,255,.7)}
.logo-text{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.01em;white-space:nowrap}
.logo-text em{font-style:normal;font-size:12px;font-weight:700;color:var(--brand);margin-left:5px;letter-spacing:.06em}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{position:relative;padding:10px 13px;border-radius:10px;font-size:15px;color:var(--ink-2);min-height:44px;display:inline-flex;align-items:center}
.main-nav a:hover{color:var(--ink);background:rgba(255,255,255,.05)}
.main-nav a::after{content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;border-radius:2px;background:var(--grad-brand);opacity:0;transition:opacity var(--t)}
.main-nav a:hover::after{opacity:.6}
.main-nav a.is-active{color:var(--brand)}
.main-nav a.is-active::after{opacity:1;box-shadow:0 6px 18px rgba(20,224,160,.35)}
.main-nav a.is-active::before{content:"";position:absolute;left:2px;top:50%;transform:translateY(-50%);width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(20,224,160,.8)}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;background:rgba(20,224,160,.08);border:1px solid var(--line);color:var(--ink);cursor:pointer}
.nav-toggle:hover{color:var(--brand)}
@media (max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .header-inner{height:64px}
}
@media (max-width:520px){.logo-text em{display:none}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 22px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;transition:transform var(--t),filter var(--t),box-shadow var(--t),background var(--t),color var(--t);
}
.btn-primary{background:var(--grad-cta);color:#1E0F04;box-shadow:0 10px 30px rgba(255,122,41,.26)}
.btn-primary:hover{filter:brightness(1.07);transform:translateY(-2px);box-shadow:0 14px 34px rgba(255,122,41,.36);color:#1E0F04}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:rgba(20,224,160,.06);border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:rgba(20,224,160,.5);color:var(--brand);transform:translateY(-2px)}
.btn:disabled{opacity:.55;cursor:not-allowed;box-shadow:none;transform:none}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--brand)}
.btn-text i{transition:transform var(--t)}
.btn-text:hover i{transform:translateX(4px)}
.btn-sm{min-height:36px;padding:7px 16px;font-size:14px}

/* ---------- 抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;pointer-events:none;transition:opacity var(--t);z-index:90}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:86%;max-width:360px;z-index:95;
  background:var(--bg-1);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform 280ms cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:none}
.drawer::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--grad-brand)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer a.drawer-link{padding:14px;border-radius:12px;color:var(--ink-2);font-size:16px;border:1px solid transparent}
.drawer a.drawer-link:hover{color:var(--ink);background:rgba(255,255,255,.05);border-color:var(--line-2)}
.drawer a.drawer-link.is-active{color:var(--brand);border-color:var(--line);background:rgba(20,224,160,.08)}
.drawer-cta{margin-top:auto;padding-top:16px}
.drawer-cta .btn{width:100%}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:76px 0 64px;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(7,17,14,.97) 0%,rgba(7,17,14,.86) 46%,rgba(7,17,14,.6) 100%),url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line-2);
}
.hero::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad-brand);opacity:.7}
.hero-grid{display:flex;gap:48px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.hero-copy{flex:1 1 460px;max-width:620px}
.hero-media{flex:1 1 360px;max-width:480px;position:relative}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:0 24px 60px rgba(0,0,0,.55)}
.hero-media::after{content:"";position:absolute;inset:0;border-radius:var(--r-lg);background:linear-gradient(120deg,rgba(7,17,14,.5),rgba(7,17,14,0) 60%);pointer-events:none}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(20,224,160,.08);color:var(--brand);font-size:13px;font-weight:700;margin-bottom:18px}
.hero h1{font-size:40px;margin-bottom:16px}
.hero .lede{font-size:17px;color:var(--ink-2);max-width:50ch;margin-bottom:26px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.crumb{font-size:13px;color:var(--ink-3);margin-bottom:14px}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{margin:0 8px;opacity:.5}
@media (max-width:1024px){
  .hero{padding:56px 0 48px}
  .hero-grid{gap:32px}
  .hero-media{max-width:100%;flex-basis:100%}
}
@media (max-width:640px){
  h1,.hero h1{font-size:28px;line-height:1.3}
  h2{font-size:22px}
  h3{font-size:18px}
  body{font-size:15.5px}
  .hero .lede{font-size:16px}
}

/* ---------- 锚点条 ---------- */
.anchor-tabs{position:sticky;top:72px;z-index:60;background:rgba(9,20,17,.92);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line-2)}
.anchor-tabs .inner{display:flex;gap:8px;overflow-x:auto;padding:10px 0;scrollbar-width:none}
.anchor-tabs .inner::-webkit-scrollbar{display:none}
.anchor-tabs a{flex:0 0 auto;padding:9px 16px;border-radius:999px;font-size:14px;color:var(--ink-2);border:1px solid transparent;min-height:40px;display:inline-flex;align-items:center}
.anchor-tabs a:hover{color:var(--ink);background:rgba(255,255,255,.05)}
.anchor-tabs a.is-active{color:var(--brand);border-color:var(--line);background:rgba(20,224,160,.1);box-shadow:0 6px 18px rgba(20,224,160,.16)}
@media (max-width:1024px){.anchor-tabs{top:64px}}

/* ---------- 区块 ---------- */
.section{padding:96px 0}
.section.tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head p{color:var(--ink-2);font-size:16px}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
@media (max-width:640px){.section{padding:56px 0}.section.tight{padding:48px 0}.section-head{margin-bottom:28px}}

/* ---------- 信息条 ---------- */
.notice-list{display:grid;gap:14px;grid-template-columns:repeat(3,1fr)}
.notice-strip{display:flex;gap:14px;align-items:flex-start;padding:18px;border-radius:var(--r-md);background:rgba(20,224,160,.06);border:1px solid var(--line)}
.notice-strip i{color:var(--brand);margin-top:4px}
.notice-strip strong{display:block;font-size:15px;margin-bottom:2px}
.notice-strip span{font-size:14px;color:var(--ink-3)}
@media (max-width:1024px){.notice-list{grid-template-columns:1fr}}

/* ---------- 卡片 ---------- */
.card{background:var(--bg-2);border-radius:var(--r-md);box-shadow:var(--shadow);padding:26px;transition:transform var(--t),box-shadow var(--t)}
.card:hover{transform:translateY(-4px);box-shadow:0 0 0 1px rgba(20,224,160,.42),0 26px 60px rgba(0,0,0,.5)}
.sec-card{position:relative;height:100%;padding:26px 24px 24px}
.sec-card::before{content:"";position:absolute;left:0;top:26px;bottom:26px;width:2px;border-radius:2px;background:var(--grad-brand);opacity:.85}
.sec-card .idx{font-size:13px;font-weight:800;color:var(--brand);letter-spacing:.14em;margin-bottom:10px}
.sec-card h3{font-size:19px;margin-bottom:10px}
.sec-card p{font-size:15px;color:var(--ink-2);margin:0}
.sec-card .badge{position:absolute;right:20px;top:22px;font-size:12px;font-weight:800;color:var(--accent);border:1px solid rgba(255,122,41,.4);border-radius:999px;padding:2px 10px;background:rgba(255,122,41,.08)}
.grid-gap{margin-bottom:24px}

/* ---------- 对照 ---------- */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-card{position:relative;border-radius:var(--r-lg);padding:30px;background:var(--bg-1);box-shadow:var(--shadow);overflow:hidden}
.compare-card::before{content:"";position:absolute;left:0;right:0;top:0;height:3px}
.compare-card.good::before{background:var(--grad-brand)}
.compare-card.warn::before{background:linear-gradient(135deg,#FF8A3D,#FF6B1A)}
.compare-card h3{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.compare-card.good h3 i{color:var(--brand)}
.compare-card.warn h3 i{color:var(--accent)}
.compare-list li{display:flex;gap:12px;align-items:flex-start;padding:13px 0;border-bottom:1px dashed var(--line-2);font-size:15px;color:var(--ink-2)}
.compare-list li:last-child{border-bottom:0}
.compare-list i{margin-top:5px;font-size:13px}
.compare-card.good .compare-list i{color:var(--brand)}
.compare-card.warn .compare-list i{color:var(--accent)}
@media (max-width:900px){.compare-wrap{grid-template-columns:1fr}}

/* ---------- 自查清单 ---------- */
.checklist{display:flex;gap:36px;align-items:flex-start;flex-wrap:wrap}
.checklist-media{flex:0 1 360px;max-width:420px}
.checklist-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);border:1px solid var(--line)}
.checklist-body{flex:1 1 460px}
.check-item{display:flex;gap:18px;align-items:flex-start;padding:18px 0;border-bottom:1px solid var(--line-2)}
.check-item:last-child{border-bottom:0}
.check-num{font-variant-numeric:tabular-nums;font-weight:800;font-size:26px;line-height:1;color:var(--brand);min-width:46px;padding-top:4px}
.check-item h3{font-size:17px;margin-bottom:4px}
.check-item p{font-size:14.5px;color:var(--ink-3);margin:0}

/* ---------- FAQ ---------- */
.faq-item{border:1px solid var(--line-2);border-radius:var(--r-md);background:var(--bg-1);margin-bottom:14px;overflow:hidden;transition:border-color var(--t),background var(--t)}
.faq-item summary{position:relative;display:flex;justify-content:space-between;align-items:center;gap:14px;padding:20px 22px;font-weight:700;font-size:16px;cursor:pointer;list-style:none;min-height:44px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:20px;font-weight:700;color:var(--brand);flex:0 0 auto}
.faq-item[open]{border-color:var(--line);background:linear-gradient(180deg,rgba(20,224,160,.09),rgba(12,26,22,.92))}
.faq-item[open] summary::after{content:"−"}
.faq-item[open] summary::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad-brand)}
.faq-body{padding:0 22px 22px;color:var(--ink-2);font-size:15.5px;margin:0}
.faq-body p:last-child{margin-bottom:0}

/* ---------- CTA ---------- */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  border-radius:var(--r-lg);padding:34px;border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(15,143,102,.22),rgba(111,233,255,.08));
  box-shadow:0 0 0 1px rgba(20,224,160,.1),0 24px 60px rgba(0,0,0,.4);
}
.cta-bar h2{font-size:24px;margin-bottom:8px}
.cta-bar p{margin:0;color:var(--ink-2);font-size:15px;max-width:56ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.privacy-note{font-size:13px;color:var(--ink-3);margin-top:18px;line-height:1.7}
.privacy-note a{color:var(--ink-2);text-decoration:underline}

/* ---------- 内链卡 ---------- */
.link-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.link-card{display:block;background:var(--bg-2);border-radius:var(--r-md);box-shadow:var(--shadow);overflow:hidden;transition:transform var(--t),box-shadow var(--t)}
.link-card:hover{transform:translateY(-4px);box-shadow:0 0 0 1px rgba(20,224,160,.42),0 26px 60px rgba(0,0,0,.5);color:var(--ink)}
.link-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.link-card .body{padding:20px 22px 22px}
.link-card .tag{display:inline-flex;padding:3px 12px;border-radius:999px;border:1px solid var(--line);background:rgba(20,224,160,.08);color:var(--brand);font-size:12px;font-weight:700;margin-bottom:10px}
.link-card h3{font-size:18px;margin-bottom:8px}
.link-card p{font-size:14.5px;color:var(--ink-3);margin-bottom:12px}
@media (max-width:900px){.link-cards{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.link-cards{grid-template-columns:1fr}}

/* ---------- 弹层 ---------- */
.modal-shell{position:fixed;inset:0;z-index:120;display:none;place-items:center;padding:20px;background:rgba(0,0,0,.66)}
.modal-shell.is-open{display:grid}
.modal-card{position:relative;width:min(560px,100%);max-height:88vh;overflow:auto;background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;box-shadow:0 30px 80px rgba(0,0,0,.6)}
.modal-card::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--grad-brand)}
.modal-card h2{font-size:22px;margin-bottom:8px}
.modal-sub{font-size:14.5px;color:var(--ink-3);margin-bottom:22px}
.modal-close{position:absolute;right:16px;top:14px;width:36px;height:36px;border-radius:50%;border:1px solid var(--line-2);background:transparent;color:var(--ink-3);font-size:20px;line-height:1;cursor:pointer}
.modal-close:hover{color:var(--ink);border-color:var(--line)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--ink-2);margin-bottom:8px}
.field input,.field textarea{width:100%;background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-sm);padding:12px 14px;color:var(--ink);font-size:15px;transition:border-color var(--t),box-shadow var(--t)}
.field textarea{min-height:96px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(20,224,160,.18)}
.field input.is-error,.field textarea.is-error{border-color:#FF7A29}
.err-msg{display:none;color:#FF7A29;font-size:13px;margin-top:6px}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-3);margin:6px 0 18px}
.check-row input{margin-top:4px;accent-color:#14E0A0}
.modal-done{display:none;margin-top:16px;font-size:14px;color:var(--brand)}
.modal-card .btn{width:100%}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--bg-1);border-top:1px solid var(--line-2);padding:64px 0 28px;margin-top:0}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad-brand);opacity:.9}
.footer-col h4{font-size:15px;color:var(--ink);margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--ink-3);max-width:34ch;margin-top:14px}
.footer-brand .logo-text{font-size:18px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:var(--ink-2);font-size:14.5px;min-height:32px;display:inline-flex;align-items:center}
.footer-links a:hover{color:var(--brand)}
.footer-meta{display:flex;flex-direction:column;gap:10px;color:var(--ink-3);font-size:14.5px}
.footer-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;border-top:1px solid var(--line-2);margin-top:28px;padding-top:20px;color:var(--ink-3);font-size:13px}
@media (max-width:640px){.site-footer{padding:44px 0 22px}}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --bg-0:#07110E;
  --bg-1:#0C1A16;
  --bg-2:#122420;
  --brand:#14E0A0;
  --brand-2:#6FE9FF;
  --accent:#FF7A29;
  --ink:#E9F5F0;
  --ink-2:#B9CDC6;
  --ink-3:#8AA79E;
  --paper:#F5F9F7;
  --paper-ink:#16221E;
  --paper-ink-2:#45594F;
  --line:rgba(20,224,160,.18);
  --line-2:rgba(255,255,255,.08);
  --grad-brand:linear-gradient(135deg,#0F8F66 0%,#14E0A0 55%,#6FE9FF 100%);
  --grad-cta:linear-gradient(135deg,#FF8A3D 0%,#FF6B1A 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --shadow-card:0 0 0 1px var(--line), 0 18px 50px rgba(0,0,0,.45);
  --shadow-card-hover:0 0 0 1px rgba(20,224,160,.42), 0 24px 60px rgba(0,0,0,.55);
  --ease:200ms cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(760px 420px at 12% -6%, rgba(20,224,160,.10), transparent 62%),
    radial-gradient(600px 360px at 92% 4%, rgba(111,233,255,.07), transparent 60%);
  z-index:0;
}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),border-color var(--ease),opacity var(--ease)}
a:hover{color:var(--brand-2)}
img{max-width:100%;display:block;border-radius:14px}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.24;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
::selection{background:rgba(20,224,160,.28);color:#fff}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--brand-2);
  outline-offset:3px;
  border-radius:6px;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
section{position:relative;z-index:1}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--dark{background:var(--bg-1)}
.head{max-width:720px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--brand);
  border:1px solid var(--line);background:rgba(20,224,160,.08);
  border-radius:999px;padding:6px 14px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 12px rgba(20,224,160,.9)}
h1{font-size:44px;font-weight:800;line-height:1.22;letter-spacing:-.01em}
h2{font-size:28px;font-weight:700;line-height:1.3}
h3{font-size:20px;font-weight:700;line-height:1.35}
.lead{color:var(--ink-2);font-size:17px;line-height:1.85;margin-top:16px}
.muted{color:var(--ink-3);font-size:14px}
.num{font-variant-numeric:tabular-nums;font-weight:800}
.hr-neon{height:2px;border:0;background:var(--grad-brand);opacity:.6;margin:0}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:999px;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--grad-cta);color:#1B0D03;
  box-shadow:0 10px 26px rgba(255,122,41,.32);
}
.btn-primary:hover{color:#1B0D03;transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,122,41,.42)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;color:var(--brand);border:1px solid rgba(20,224,160,.5);
}
.btn-ghost:hover{color:var(--brand-2);border-color:var(--brand-2);transform:translateY(-2px);box-shadow:0 0 0 3px rgba(20,224,160,.12)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;box-shadow:none;transform:none;cursor:not-allowed}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--brand);font-size:15px}
.text-link span{transition:transform var(--ease)}
.text-link:hover span{transform:translateX(4px)}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
  color:var(--brand);background:rgba(20,224,160,.08);
  border:1px solid var(--line);border-radius:999px;padding:5px 12px;
}
.badge--warm{color:var(--accent);border-color:rgba(255,122,41,.34);background:rgba(255,122,41,.10)}

/* 顶栏 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,17,14,.72);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:background var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{background:rgba(7,17,14,.94);box-shadow:0 12px 34px rgba(0,0,0,.45)}
.site-header::after{content:"";display:block;height:2px;background:var(--grad-brand);opacity:.75}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:74px}
.brand{display:inline-flex;align-items:center;gap:12px}
.brand-mark{
  position:relative;width:30px;height:30px;border-radius:50%;
  border:2px solid rgba(20,224,160,.55);
  box-shadow:0 0 18px rgba(20,224,160,.35), inset 0 0 12px rgba(20,224,160,.25);
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;inset:6px;border-radius:50%;
  border:2px solid transparent;border-top-color:var(--brand-2);border-right-color:var(--brand);
  transform:rotate(28deg);
}
.logo-text{font-size:19px;font-weight:800;color:var(--ink);letter-spacing:.01em}
.logo-text em{font-style:normal;color:var(--brand)}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 12px;border-radius:10px;
  color:var(--ink-2);font-size:15px;font-weight:600;
  transition:color var(--ease),background var(--ease);
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--grad-brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;opacity:0;
  transition:transform var(--ease),opacity var(--ease);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1);opacity:.85}
.main-nav a.is-active{color:var(--brand)}
.main-nav a.is-active::after{transform:scaleX(1);opacity:1;box-shadow:0 6px 18px rgba(20,224,160,.35)}
.main-nav a.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 10px rgba(20,224,160,.9);
}
.header-actions{display:flex;align-items:center;gap:12px}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);color:var(--ink);font-size:18px;
  align-items:center;justify-content:center;
}
.menu-toggle:hover{border-color:rgba(20,224,160,.45)}

/* Off-canvas */
.off-canvas{width:300px;background:var(--bg-1);border-left:1px solid var(--line)}
.off-canvas .drawer-head{height:2px;background:var(--grad-brand)}
.drawer-inner{padding:26px 22px 30px;display:flex;flex-direction:column;height:100%}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin:22px 0 auto}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 12px;border-radius:12px;color:var(--ink-2);font-weight:600;
  border:1px solid transparent;
}
.drawer-nav a:hover{color:var(--ink);background:rgba(20,224,160,.06);border-color:var(--line)}
.drawer-nav a.is-active{color:var(--brand);background:rgba(20,224,160,.10);border-color:var(--line);box-shadow:inset 3px 0 0 var(--brand)}
.drawer-nav a::after{content:"›";color:var(--ink-3)}
.off-canvas-content{box-shadow:none !important;background:var(--bg-0)}

/* Hero */
.hero{padding:76px 0 64px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center}
.hero h1{margin:16px 0 0}
.hero .lead{max-width:52ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-mini{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.mini-chip{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--line-2);background:rgba(255,255,255,.03);
  border-radius:999px;padding:8px 14px;font-size:13px;color:var(--ink-2);
}
.mini-chip b{color:var(--ink);font-variant-numeric:tabular-nums;font-size:15px}
.hero-visual{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(20,224,160,.32);
  box-shadow:0 24px 60px rgba(0,0,0,.5);
  aspect-ratio:16/10;background:var(--bg-2);
}
.hero-visual img{width:100%;height:100%;object-fit:cover;border-radius:0}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,17,14,.86) 0%,rgba(7,17,14,.28) 55%,rgba(7,17,14,.55) 100%);
}
.hero-visual .visual-tag{
  position:absolute;left:20px;bottom:20px;z-index:2;
  display:flex;align-items:center;gap:10px;
  background:rgba(7,17,14,.72);border:1px solid var(--line);
  border-radius:999px;padding:8px 16px;font-size:13px;color:var(--ink-2);
}
.hero-visual .visual-tag b{color:var(--brand);font-variant-numeric:tabular-nums}

/* 面包屑 */
.crumbs-wrap{padding-top:26px}
.breadcrumbs{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  margin:0;padding:0;background:none;border:0;
  font-size:13.5px;color:var(--ink-3);
}
.breadcrumbs li{display:flex;align-items:center;gap:10px;color:var(--ink-3);float:none}
.breadcrumbs li::after{content:none}
.breadcrumbs li + li::before{content:"";width:1px;height:12px;background:var(--line-2)}
.breadcrumbs a{color:var(--ink-3)}
.breadcrumbs a:hover{color:var(--brand)}
.breadcrumbs .current{color:var(--ink-2)}

/* 锚点条 */
.anchor-bar{
  position:relative;z-index:5;
  border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2);
  background:rgba(12,26,22,.7);
}
.anchor-scroll{display:flex;gap:6px;overflow-x:auto;padding:10px 0;scrollbar-width:none}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-scroll a{
  position:relative;flex:0 0 auto;
  padding:10px 16px;border-radius:999px;
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  border:1px solid transparent;transition:all var(--ease);
}
.anchor-scroll a:hover{color:var(--ink);border-color:var(--line)}
.anchor-scroll a.is-active{
  color:var(--brand);border-color:var(--line);background:rgba(20,224,160,.08);
  box-shadow:0 6px 18px rgba(20,224,160,.16);
}

/* 通用卡片 */
.card{
  background:var(--bg-2);border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  padding:28px;height:100%;
  transition:transform var(--ease),box-shadow var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover)}
.card--flat:hover{transform:none}
.card h3{color:var(--ink);margin-bottom:10px}
.card p{color:var(--ink-2);font-size:15px;line-height:1.8}
.card-media{
  border-radius:16px;overflow:hidden;margin-bottom:20px;
  border:1px solid var(--line-2);aspect-ratio:16/9;background:var(--bg-1);
}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 320ms cubic-bezier(.2,.7,.3,1)}
.card:hover .card-media img{transform:scale(1.02)}

/* 下载前确认：圆角信息条 */
.prep-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center}
.check-strip{
  display:flex;gap:16px;align-items:flex-start;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line-2);border-left:2px solid var(--brand);
  border-radius:var(--r-md);padding:20px 22px;
  transition:border-color var(--ease),background var(--ease);
}
.check-strip + .check-strip{margin-top:16px}
.check-strip:hover{border-color:rgba(20,224,160,.42);background:rgba(20,224,160,.05)}
.check-strip .idx{
  font-variant-numeric:tabular-nums;font-weight:800;font-size:15px;
  color:var(--brand);border:1px solid var(--line);border-radius:999px;
  min-width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
}
.check-strip h3{font-size:17px;margin-bottom:6px}
.check-strip p{color:var(--ink-2);font-size:14.5px;line-height:1.75}
.prep-visual{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:4/3;position:relative;background:var(--bg-2);
}
.prep-visual img{width:100%;height:100%;object-fit:cover;border-radius:0}
.prep-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,17,14,.15),rgba(7,17,14,.72))}

/* 设备适配：1 大 2 小 */
.adapt-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:24px;align-items:stretch}
.adapt-main{
  display:flex;flex-direction:column;
  background:linear-gradient(160deg,rgba(20,224,160,.10),rgba(18,36,32,.9) 46%),var(--bg-2);
  border-radius:var(--r-lg);box-shadow:var(--shadow-card);padding:30px;
  transition:transform var(--ease),box-shadow var(--ease);
}
.adapt-main:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover)}
.adapt-main .card-media{margin:0 0 24px}
.adapt-side{display:flex;flex-direction:column;gap:24px}
.adapt-side .card{padding:24px}
.adapt-side h3{font-size:17px}
.spec-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.spec-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--ink-2);line-height:1.7;
}
.spec-list li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 10px rgba(20,224,160,.8);
}

/* 安装步骤 */
.step-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:12px}
.step-item{
  position:relative;background:var(--bg-2);border-radius:var(--r-md);
  box-shadow:var(--shadow-card);padding:26px 22px;
  transition:transform var(--ease),box-shadow var(--ease);
}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover)}
.step-item .step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:50%;
  border:1px solid rgba(20,224,160,.45);
  color:var(--brand);font-variant-numeric:tabular-nums;font-weight:800;font-size:19px;
  box-shadow:0 0 18px rgba(20,224,160,.18) inset;
  margin-bottom:16px;
}
.step-item h3{font-size:17px;margin-bottom:8px}
.step-item p{color:var(--ink-2);font-size:14.5px;line-height:1.75}

/* 异常处理 */
.issue-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.issue-card{
  background:var(--bg-1);border:1px solid var(--line-2);border-radius:var(--r-md);
  padding:24px;transition:border-color var(--ease),transform var(--ease),background var(--ease);
}
.issue-card:hover{border-color:rgba(20,224,160,.42);transform:translateY(-4px);background:rgba(20,224,160,.04)}
.issue-card h3{font-size:17px;display:flex;align-items:center;gap:10px;margin-bottom:10px}
.issue-card h3 i{
  width:10px;height:10px;border-radius:3px;background:var(--accent);
  box-shadow:0 0 12px rgba(255,122,41,.7);flex:0 0 auto;
}
.issue-card p{color:var(--ink-2);font-size:14.5px;line-height:1.78}

/* 数据区 */
.stats-section{background:var(--bg-1);overflow:hidden}
.stats-section::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(620px 320px at 22% 12%, rgba(20,224,160,.16), transparent 62%),
             radial-gradient(560px 300px at 84% 88%, rgba(111,233,255,.10), transparent 62%);
  pointer-events:none;
}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  text-align:center;padding:32px 18px;border-radius:var(--r-md);
  background:rgba(7,17,14,.6);border:1px solid var(--line-2);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.stat-card:hover{transform:translateY(-4px);border-color:rgba(20,224,160,.42);box-shadow:0 20px 44px rgba(0,0,0,.45)}
.stat-card .value{
  font-size:56px;line-height:1;font-weight:800;font-variant-numeric:tabular-nums;
  color:var(--ink);
  text-shadow:0 0 26px rgba(20,224,160,.35);
}
.stat-card .value .unit{font-size:20px;font-weight:700;color:var(--brand);margin-left:4px}
.stat-card .cap{margin-top:14px;color:var(--ink-2);font-size:14px}
.stat-card .ring{
  width:52px;height:52px;margin:0 auto 18px;border-radius:50%;
  border:2px solid rgba(255,122,41,.55);
  box-shadow:0 0 0 6px rgba(255,122,41,.08),0 0 22px rgba(255,122,41,.28) inset;
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);font-size:13px;font-weight:800;
}

/* FAQ */
.faq-wrap{max-width:900px}
.accordion{border:0;background:transparent}
.accordion-item{
  background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-md);
  margin-bottom:14px;overflow:hidden;transition:border-color var(--ease);
}
.accordion-item.is-active{border-color:rgba(20,224,160,.42);box-shadow:0 14px 40px rgba(0,0,0,.4)}
.accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;border:0;background:transparent;
  color:var(--ink);font-size:16.5px;font-weight:700;line-height:1.6;
  transition:color var(--ease),background var(--ease);
}
.accordion-title:hover{color:var(--brand);background:rgba(20,224,160,.05)}
.accordion-title::before{content:none !important}
.accordion-title .sign{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;
  transition:transform var(--ease),background var(--ease);
}
.accordion-item.is-active .accordion-title .sign{transform:rotate(45deg);background:rgba(20,224,160,.12)}
.accordion-item.is-active .accordion-title{color:var(--brand)}
.accordion-content{
  padding:0 24px 22px;border:0 !important;border-top:0;background:transparent;
  color:var(--ink-2);font-size:15px;line-height:1.85;
}
.accordion-item.is-active .accordion-content{background:linear-gradient(180deg,rgba(20,224,160,.07),transparent 70%)}
.accordion-content p + p{margin-top:10px}

/* CTA 条 */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  border-radius:var(--r-lg);padding:30px 34px;
  background:linear-gradient(135deg,rgba(20,224,160,.12),rgba(12,26,22,.95));
  border:1px solid transparent;
  background-clip:padding-box;
  position:relative;
}
.cta-bar::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);padding:1px;
  background:var(--grad-brand);opacity:.6;
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;
}
.cta-bar h2{font-size:23px}
.cta-bar p{color:var(--ink-2);font-size:15px;margin-top:8px}

/* 浮动按钮 */
.float-cta{
  position:fixed;right:20px;bottom:20px;z-index:55;
  border-radius:999px;padding:14px 22px;font-weight:800;font-size:15px;
  background:var(--grad-cta);color:#1B0D03;
  box-shadow:0 16px 34px rgba(255,122,41,.4);
  transition:transform var(--ease),box-shadow var(--ease);
}
.float-cta:hover{transform:translateY(-3px);box-shadow:0 20px 40px rgba(255,122,41,.5)}
.float-cta:active{transform:translateY(1px)}

/* 内链卡 */
.link-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.link-card{
  display:flex;flex-direction:column;gap:10px;
  background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-md);
  padding:26px;transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.link-card:hover{transform:translateY(-4px);border-color:rgba(20,224,160,.42);box-shadow:var(--shadow-card-hover);color:inherit}
.link-card .badge{align-self:flex-start}
.link-card h3{font-size:18px;color:var(--ink)}
.link-card p{color:var(--ink-2);font-size:14.5px;line-height:1.75;flex:1}
.link-card .arrow{font-weight:700;color:var(--brand);display:inline-flex;gap:6px;align-items:center}
.link-card:hover .arrow span{transform:translateX(4px)}
.link-card .arrow span{display:inline-block;transition:transform var(--ease)}

/* 表单 / Reveal */
.reveal.lead-modal{
  border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(20,224,160,.10),rgba(12,26,22,.98) 26%),var(--bg-1);
  border:1px solid var(--line);
  padding:34px 32px 32px;
  box-shadow:0 40px 90px rgba(0,0,0,.6);
  max-width:560px;
  color:var(--ink);
}
.reveal.lead-modal::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--grad-brand);border-radius:var(--r-lg) var(--r-lg) 0 0;
}
.lead-modal h3{font-size:22px;margin-bottom:10px}
.lead-modal .modal-sub{color:var(--ink-2);font-size:14.5px;line-height:1.75;margin-bottom:22px}
.close-button{
  position:absolute;top:14px;right:16px;
  width:38px;height:38px;border-radius:50%;
  color:var(--ink-3);font-size:22px;line-height:1;
  display:flex;align-items:center;justify-content:center;
  transition:color var(--ease),background var(--ease);
}
.close-button:hover{color:var(--ink);background:rgba(255,255,255,.06)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--ink-2);margin-bottom:8px;font-weight:600}
.field input[type="text"],
.field input[type="tel"],
.field textarea{
  width:100%;height:auto;
  background:var(--bg-2);
  border:1px solid var(--line-2);
  border-radius:var(--r-sm);
  color:var(--ink);
  padding:13px 15px;font-size:15px;line-height:1.6;
  margin:0;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.field textarea{min-height:104px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(20,224,160,.18);
  background:#10201C;
}
.field.has-error input,.field.has-error textarea{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,122,41,.14)}
.field-error{display:none;color:var(--accent);font-size:13px;margin-top:6px}
.field.has-error .field-error{display:block}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--ink-2);line-height:1.7}
.consent input{
  appearance:none;-webkit-appearance:none;
  flex:0 0 auto;width:20px;height:20px;margin-top:2px;
  border:1px solid rgba(20,224,160,.5);border-radius:6px;background:var(--bg-2);
  position:relative;cursor:pointer;transition:background var(--ease),border-color var(--ease);
}
.consent input:checked{background:var(--grad-brand);border-color:transparent}
.consent input:checked::after{
  content:"";position:absolute;left:6px;top:2px;width:5px;height:10px;
  border:2px solid #061410;border-top:0;border-left:0;transform:rotate(42deg);
}
.form-note{font-size:12.5px;color:var(--ink-3);line-height:1.7;margin-top:14px}
.form-success{
  display:none;margin-top:16px;padding:14px 16px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:rgba(20,224,160,.10);color:var(--ink);font-size:14px;
}
.form-success.is-visible{display:block}

/* 页脚 */
.site-footer{background:var(--bg-1);position:relative;padding:64px 0 28px;margin-top:0}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-brand);opacity:.75}
.footer-col h4{font-size:15px;color:var(--ink);margin-bottom:16px;letter-spacing:.02em}
.footer-brand .logo-text{font-size:20px;display:inline-block;margin-bottom:14px}
.footer-brand p{color:var(--ink-2);font-size:14.5px;line-height:1.8;max-width:32ch}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:var(--ink-2);font-size:14.5px}
.footer-links a:hover{color:var(--brand)}
.footer-meta{display:flex;flex-direction:column;gap:10px;color:var(--ink-3);font-size:14px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  border-top:1px solid var(--line-2);margin-top:34px;padding-top:22px;
  color:var(--ink-3);font-size:13.5px;
}

/* 响应式 */
@media (max-width:1024px){
  h1{font-size:34px}
  h2{font-size:24px}
  .main-nav{display:none}
  .menu-toggle{display:inline-flex}
  .hero{padding:56px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .prep-grid{grid-template-columns:1fr;gap:28px}
  .adapt-grid{grid-template-columns:1fr}
  .step-row{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .link-grid{grid-template-columns:1fr}
  .section{padding:72px 0}
}
@media (max-width:640px){
  .container{padding:0 18px}
  h1{font-size:28px;line-height:1.3}
  h2{font-size:22px}
  h3{font-size:18px}
  body{font-size:15.5px}
  .lead{font-size:15.5px}
  .section,.section--tight{padding:56px 0}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 auto}
  .step-row{grid-template-columns:1fr}
  .issue-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .card{padding:22px;border-radius:var(--r-md)}
  .stat-card .value{font-size:46px}
  .cta-bar{padding:24px 20px}
  .reveal.lead-modal{padding:28px 20px;border-radius:var(--r-md)}
  .footer-bottom{flex-direction:column;gap:6px}
  .float-cta{right:14px;bottom:14px;padding:12px 18px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category4 */
:root{
  --bg-0:#07110E;
  --bg-1:#0C1A16;
  --bg-2:#122420;
  --brand:#14E0A0;
  --brand-2:#6FE9FF;
  --accent:#FF7A29;
  --ink:#E9F5F0;
  --ink-2:#B9CDC6;
  --ink-3:#8AA79E;
  --paper:#F5F9F7;
  --paper-ink:#16221E;
  --paper-ink-2:#45594F;
  --line:rgba(20,224,160,.18);
  --line-2:rgba(255,255,255,.08);
  --grad-brand:linear-gradient(135deg,#0F8F66 0%,#14E0A0 52%,#6FE9FF 100%);
  --grad-accent:linear-gradient(135deg,#FF8A3D 0%,#FF6B1A 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow-card:0 0 0 1px var(--line),0 18px 50px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-2)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}

/* ---------- 容器与栅格覆盖 ---------- */
.grid-container{max-width:1200px;width:100%;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}
@media screen and (min-width:1440px){.grid-container{max-width:1280px}}
.grid-x{display:flex;flex-wrap:wrap}
.grid-x>.cell{min-width:0}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x>.cell{margin-left:12px;margin-right:12px;width:calc(100% - 24px)}
@media screen and (min-width:641px){
  .grid-margin-x>.medium-6{width:calc(50% - 24px)}
  .grid-margin-x>.medium-4{width:calc(33.3333% - 24px)}
}
@media screen and (min-width:1025px){
  .grid-margin-x>.large-3{width:calc(25% - 24px)}
  .grid-margin-x>.large-4{width:calc(33.3333% - 24px)}
  .grid-margin-x>.large-5{width:calc(41.6666% - 24px)}
  .grid-margin-x>.large-6{width:calc(50% - 24px)}
  .grid-margin-x>.large-7{width:calc(58.3333% - 24px)}
  .grid-margin-x>.large-8{width:calc(66.6666% - 24px)}
  .grid-margin-x>.large-12{width:calc(100% - 24px)}
}
@media screen and (max-width:640px){
  .grid-margin-x{margin-left:-8px;margin-right:-8px}
  .grid-margin-x>.cell{margin-left:8px;margin-right:8px;width:calc(100% - 16px)}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,17,14,.72);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-2);
  transition:background .3s var(--ease),border-color .3s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--grad-brand);opacity:.85;
}
.site-header.is-scrolled{background:rgba(7,17,14,.94);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  position:relative;width:36px;height:36px;border-radius:50%;flex:0 0 36px;
  background:radial-gradient(circle at 50% 50%,rgba(20,224,160,.28),rgba(20,224,160,0) 70%);
  border:1px solid var(--line);
  box-shadow:0 0 18px rgba(20,224,160,.3);
}
.brand-mark::before{
  content:"";position:absolute;inset:6px;border-radius:50%;
  border:2px solid transparent;border-top-color:var(--brand);border-right-color:var(--brand-2);
  transform:rotate(42deg);
}
.brand-mark::after{
  content:"";position:absolute;inset:13px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 10px var(--brand);
}
.logo-text{font-size:19px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--brand)}
.main-nav{display:flex;align-items:center;gap:6px;flex:1 1 auto}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;gap:7px;
  padding:9px 13px;border-radius:var(--r-pill);
  font-size:14.5px;color:var(--ink-2);white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.main-nav a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;border-radius:2px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:left center;
  transition:transform .25s var(--ease);
}
.main-nav a:hover{color:var(--ink);background:rgba(20,224,160,.06)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{
  color:var(--brand);background:rgba(20,224,160,.08);
  box-shadow:0 6px 18px rgba(20,224,160,.22);
}
.main-nav a.is-active::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 10px var(--brand);flex:0 0 6px;
}
.main-nav a.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line-2);background:rgba(20,224,160,.05);color:var(--ink);
  align-items:center;justify-content:center;font-size:17px;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--line);color:var(--brand)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  text-align:center;line-height:1.2;
}
.btn i{font-size:14px}
.btn-primary{
  background:var(--grad-accent);color:#1B0C02;
  box-shadow:0 12px 30px rgba(255,107,26,.28);
}
.btn-primary:hover{color:#1B0C02;transform:translateY(-2px);box-shadow:0 16px 38px rgba(255,107,26,.42)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 8px 18px rgba(255,107,26,.3)}
.btn-ghost{
  background:transparent;color:var(--brand);border-color:var(--line);
}
.btn-ghost:hover{color:var(--brand-2);border-color:rgba(20,224,160,.42);background:rgba(20,224,160,.07);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-loading{opacity:.6;box-shadow:none;cursor:not-allowed;transform:none}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:700;color:var(--brand);
}
.text-link i{transition:transform .2s var(--ease)}
.text-link:hover i{transform:translateX(4px)}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{font-size:28px;line-height:1.35;font-weight:700;margin-bottom:14px}
.section-head p{color:var(--ink-2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(20,224,160,.08);
  color:var(--brand);font-size:13px;font-weight:700;margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px var(--brand)}
.divider-neon{height:1px;background:linear-gradient(90deg,rgba(20,224,160,0),rgba(20,224,160,.5),rgba(20,224,160,0))}

/* ---------- Hero ---------- */
.hero{position:relative;padding:80px 0 64px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(900px 420px at 12% 0%,rgba(20,224,160,.16),rgba(20,224,160,0) 70%),
             radial-gradient(700px 380px at 88% 20%,rgba(111,233,255,.10),rgba(111,233,255,0) 70%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{font-size:40px;line-height:1.22;font-weight:800;letter-spacing:-.01em;margin-bottom:20px}
.hero h1 .hl{color:var(--brand)}
.hero-sub{font-size:18px;line-height:1.75;color:var(--ink-2);max-width:520px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(20,224,160,.06);
  font-size:13px;color:var(--ink-2);
}
.chip i{color:var(--brand);font-size:12px}
.hero-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:0 0 0 1px rgba(20,224,160,.12),0 26px 70px rgba(0,0,0,.55)}
.hero-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,17,14,.78) 0%,rgba(7,17,14,.28) 48%,rgba(7,17,14,.1) 100%);
}
.hero-figure-badge{
  position:absolute;left:20px;bottom:20px;z-index:2;
  display:flex;align-items:center;gap:12px;
  padding:12px 18px;border-radius:var(--r-md);
  background:rgba(12,26,22,.82);border:1px solid var(--line);backdrop-filter:blur(8px);
}
.hero-figure-badge .num{font-size:26px;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1}
.hero-figure-badge .txt{font-size:13px;color:var(--ink-2);line-height:1.4}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:72px;z-index:50;
  background:rgba(7,17,14,.9);backdrop-filter:blur(10px);
  border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2);
}
.anchor-scroll{display:flex;gap:6px;overflow-x:auto;padding:10px 0;scrollbar-width:none}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-scroll a{
  position:relative;flex:0 0 auto;padding:10px 16px;border-radius:var(--r-pill);
  font-size:14px;color:var(--ink-2);white-space:nowrap;
  border:1px solid transparent;transition:all .2s var(--ease);
}
.anchor-scroll a:hover{color:var(--ink);background:rgba(20,224,160,.07);border-color:var(--line)}
.anchor-scroll a.is-active{
  color:var(--brand);border-color:var(--line);background:rgba(20,224,160,.1);
  box-shadow:0 0 20px rgba(20,224,160,.18);
}

/* ---------- 搜索区 ---------- */
.search-panel{
  background:var(--bg-1);border:1px solid var(--line-2);border-radius:var(--r-lg);
  padding:34px 32px;box-shadow:var(--shadow-card);
}
.search-panel h2{font-size:22px;font-weight:700;margin-bottom:10px}
.search-panel .lead{color:var(--ink-2);font-size:15px;margin-bottom:22px}
.faq-search{
  display:flex;align-items:center;gap:8px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:6px 6px 6px 20px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(20,224,160,.18)}
.faq-search i{color:var(--ink-3);font-size:15px}
.faq-search input{
  flex:1 1 auto;min-width:0;height:52px;border:0;background:transparent;
  color:var(--ink);font-size:16px;outline:none;
}
.faq-search input::placeholder{color:var(--ink-3)}
.hot-tags{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:18px}
.hot-tags span{font-size:13px;color:var(--ink-3)}
.hot-tags button{
  padding:7px 15px;border-radius:var(--r-pill);border:1px solid var(--line-2);
  background:transparent;color:var(--ink-2);font-size:13px;cursor:pointer;min-height:36px;
  transition:all .2s var(--ease);
}
.hot-tags button:hover{color:var(--brand);border-color:var(--line);background:rgba(20,224,160,.08)}

/* ---------- FAQ 分组 ---------- */
.faq-group{margin-bottom:56px}
.faq-group:last-child{margin-bottom:0}
.faq-group-head{display:flex;align-items:center;gap:14px;margin-bottom:22px}
.faq-group-head .idx{
  flex:0 0 auto;font-size:15px;font-weight:800;font-variant-numeric:tabular-nums;
  color:var(--accent);padding:4px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(255,122,41,.35);background:rgba(255,122,41,.1);
}
.faq-group-head h2{font-size:24px;font-weight:700}
.faq-list{display:grid;gap:14px}
.faq-item{
  background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .25s var(--ease),background .25s var(--ease),transform .25s var(--ease);
}
.faq-item:hover{border-color:rgba(20,224,160,.32)}
.faq-item.is-open{
  border-color:rgba(20,224,160,.42);
  background:linear-gradient(180deg,rgba(20,224,160,.07),rgba(20,224,160,0) 70%),var(--bg-2);
}
.faq-q{
  position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;border:0;background:transparent;color:var(--ink);
  font-size:16.5px;font-weight:700;line-height:1.5;text-align:left;cursor:pointer;
  min-height:56px;transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--grad-brand);
}
.faq-icon{
  position:relative;flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);background:rgba(20,224,160,.08);
  transition:all .25s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px;transition:transform .25s var(--ease),opacity .25s var(--ease)}
.faq-item.is-open .faq-icon{background:rgba(20,224,160,.18);border-color:rgba(20,224,160,.42)}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a-inner{padding:0 24px 22px;color:var(--ink-2);font-size:15.5px;line-height:1.85}
.faq-a-inner strong{color:var(--ink);font-weight:700}
.faq-empty{
  display:none;text-align:center;padding:56px 24px;border:1px dashed var(--line);
  border-radius:var(--r-lg);background:rgba(20,224,160,.03);
}
.faq-empty.is-visible{display:block}
.faq-empty i{font-size:30px;color:var(--brand);margin-bottom:14px;display:block}
.faq-empty p{color:var(--ink-3);font-size:15px}

/* ---------- 对照卡 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-card{
  background:var(--bg-1);border:1px solid var(--line-2);border-radius:var(--r-lg);
  padding:28px;transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.compare-card:hover{transform:translateY(-4px);border-color:rgba(20,224,160,.42);box-shadow:var(--shadow-card)}
.compare-card .tag{
  display:inline-flex;align-items:center;gap:7px;padding:5px 13px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;margin-bottom:16px;
}
.compare-card.ok .tag{color:var(--brand);border:1px solid var(--line);background:rgba(20,224,160,.1)}
.compare-card.warn .tag{color:var(--accent);border:1px solid rgba(255,122,41,.35);background:rgba(255,122,41,.1)}
.compare-card h3{font-size:19px;font-weight:700;margin-bottom:14px}
.compare-card ul{display:grid;gap:10px}
.compare-card li{position:relative;padding-left:20px;font-size:15px;color:var(--ink-2);line-height:1.7}
.compare-card li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 8px rgba(20,224,160,.6);
}
.compare-card.warn li::before{background:var(--accent);box-shadow:0 0 8px rgba(255,122,41,.6)}

/* ---------- CTA 条 ---------- */
.cta-strip{
  position:relative;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:24px;
  background:var(--bg-1);border-radius:var(--r-lg);padding:32px 36px;
  border:1px solid var(--line);overflow:hidden;
}
.cta-strip::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-brand);
}
.cta-strip::after{
  content:"";position:absolute;right:-80px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,224,160,.16),rgba(20,224,160,0) 70%);pointer-events:none;
}
.cta-strip-text{position:relative;z-index:1;max-width:620px}
.cta-strip-text h2{font-size:23px;font-weight:700;margin-bottom:8px}
.cta-strip-text p{color:var(--ink-2);font-size:15px}
.cta-strip .btn{position:relative;z-index:1}

/* ---------- 内链卡 ---------- */
.link-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.link-card{
  display:block;background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-lg);
  overflow:hidden;color:var(--ink);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.link-card:hover{transform:translateY(-4px);border-color:rgba(20,224,160,.42);box-shadow:var(--shadow-card);color:var(--ink)}
.link-card-thumb{position:relative;overflow:hidden}
.link-card-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s var(--ease)}
.link-card:hover .link-card-thumb img{transform:scale(1.02)}
.link-card-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,17,14,.05),rgba(7,17,14,.62));
}
.link-card-body{padding:22px 24px 26px}
.link-card-body .badge{
  display:inline-flex;align-items:center;padding:5px 13px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(20,224,160,.08);color:var(--brand);
  font-size:12.5px;font-weight:700;margin-bottom:14px;
}
.link-card-body h3{font-size:18px;font-weight:700;margin-bottom:10px}
.link-card-body p{color:var(--ink-2);font-size:14.5px;line-height:1.75;margin-bottom:16px}

/* ---------- 悬浮按钮 ---------- */
.float-cta{
  position:fixed;right:20px;bottom:20px;z-index:70;
  display:none;align-items:center;gap:9px;
  min-height:50px;padding:0 22px;border-radius:var(--r-pill);border:0;cursor:pointer;
  background:var(--grad-accent);color:#1B0C02;font-size:15px;font-weight:800;
  box-shadow:0 14px 34px rgba(255,107,26,.36);
}
.float-cta:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(255,107,26,.5)}

/* ---------- 表单 / 弹层 ---------- */
.reveal-overlay{background:rgba(0,0,0,.68)}
.reveal.lead-modal{
  border-radius:var(--r-lg);border:1px solid var(--line);
  background:var(--bg-1);color:var(--ink);padding:0;overflow:hidden;
  box-shadow:0 32px 90px rgba(0,0,0,.65);
}
.reveal.lead-modal::before{content:"";display:block;height:2px;background:var(--grad-brand)}
.lead-modal-inner{padding:34px 34px 30px}
.lead-modal h2{font-size:22px;font-weight:700;margin-bottom:8px}
.lead-modal .sub{color:var(--ink-2);font-size:14.5px;margin-bottom:22px}
.lead-modal .close-button{
  top:16px;right:18px;color:var(--ink-3);font-size:22px;
}
.lead-modal .close-button:hover{color:var(--brand)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;color:var(--ink-2);margin-bottom:8px;font-weight:600}
.field input[type="text"],.field input[type="tel"],.field input[type="email"],.field textarea{
  width:100%;background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-sm);
  color:var(--ink);padding:13px 16px;font-size:15px;font-family:inherit;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(20,224,160,.2);
}
.field.has-error input,.field.has-error textarea{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,122,41,.14)}
.field-error{display:none;color:var(--accent);font-size:13px;margin-top:7px}
.field.has-error .field-error{display:block}
.agree{display:flex;align-items:flex-start;gap:11px;margin-bottom:22px}
.agree input{
  appearance:none;-webkit-appearance:none;width:20px;height:20px;flex:0 0 20px;margin-top:3px;
  border-radius:6px;border:1px solid var(--line-2);background:var(--bg-2);cursor:pointer;
  transition:all .2s var(--ease);position:relative;
}
.agree input:checked{background:var(--grad-brand);border-color:transparent}
.agree input:checked::after{
  content:"";position:absolute;left:6px;top:2px;width:6px;height:11px;
  border:2px solid #07110E;border-top:0;border-left:0;transform:rotate(45deg);
}
.agree label{font-size:13.5px;color:var(--ink-3);line-height:1.7;margin:0;cursor:pointer}
.privacy-note{font-size:12.5px;color:var(--ink-3);line-height:1.7;margin-top:16px}
.privacy-note a{color:var(--ink-2);text-decoration:underline}
.privacy-note a:hover{color:var(--brand)}
.form-success{
  display:none;padding:14px 18px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:rgba(20,224,160,.08);
  color:var(--brand);font-size:14px;margin-bottom:18px;
}
.form-success.is-visible{display:block}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--bg-1);
  border-top:1px solid var(--line-2);padding:64px 0 28px;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-brand);opacity:.85;
}
.footer-col .logo-text{display:inline-block;margin-bottom:14px}
.footer-col p{color:var(--ink-3);font-size:14px;line-height:1.8;margin:0;max-width:300px}
.footer-col h4{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:16px}
.footer-links{display:grid;gap:11px}
.footer-links a{color:var(--ink-3);font-size:14px}
.footer-links a:hover{color:var(--brand)}
.footer-meta{display:grid;gap:11px}
.footer-meta span{color:var(--ink-3);font-size:14px}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-2);
}
.footer-bottom span{color:var(--ink-3);font-size:13px;font-variant-numeric:tabular-nums}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;visibility:hidden;
  transition:opacity .28s var(--ease),visibility .28s var(--ease);z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;z-index:91;
  background:var(--bg-1);border-left:1px solid var(--line-2);
  transform:translateX(100%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;padding:0;
}
.drawer.is-open{transform:translateX(0)}
.drawer::before{content:"";height:2px;background:var(--grad-brand);flex:0 0 2px}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line-2)}
.drawer-head .logo-text{font-size:17px}
.drawer-close{
  width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--line-2);
  background:transparent;color:var(--ink-2);font-size:17px;cursor:pointer;
}
.drawer-close:hover{color:var(--brand);border-color:var(--line)}
.drawer-nav{flex:1 1 auto;overflow-y:auto;padding:14px 12px}
.drawer-nav a{
  display:flex;align-items:center;gap:10px;padding:14px 16px;border-radius:var(--r-sm);
  color:var(--ink-2);font-size:15.5px;min-height:48px;
}
.drawer-nav a:hover{background:rgba(20,224,160,.07);color:var(--ink)}
.drawer-nav a.is-active{color:var(--brand);background:rgba(20,224,160,.1)}
.drawer-nav a.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px var(--brand)}
.drawer-foot{padding:18px 20px;border-top:1px solid var(--line-2)}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-primary{display:none}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:34px}
  .compare-grid{grid-template-columns:1fr}
  .link-cards{grid-template-columns:1fr 1fr}
  .section{padding:76px 0}
}
@media screen and (max-width:640px){
  .grid-container{padding-left:18px;padding-right:18px}
  .header-inner{height:64px;gap:16px}
  .logo-text{font-size:16px}
  .brand-mark{width:32px;height:32px;flex:0 0 32px}
  .hero{padding:56px 0 44px}
  .hero h1{font-size:28px;line-height:1.32}
  .hero-sub{font-size:15.5px}
  .section{padding:56px 0}
  .section-head h2{font-size:22px}
  .search-panel{padding:24px 20px}
  .faq-search{padding:5px 5px 5px 16px;flex-wrap:wrap}
  .faq-search input{height:46px;font-size:15px;width:100%;flex:1 1 140px}
  .faq-search .btn{width:100%}
  .faq-q{padding:17px 18px;font-size:15.5px}
  .faq-a-inner{padding:0 18px 20px;font-size:15px}
  .cta-strip{padding:26px 22px}
  .cta-strip .btn{width:100%}
  .link-cards{grid-template-columns:1fr}
  .anchor-bar{top:64px}
  .float-cta{display:inline-flex}
  .footer-bottom{flex-direction:column;gap:8px}
  .lead-modal-inner{padding:26px 20px 24px}
}
@media screen and (min-width:641px){
  .float-cta{display:inline-flex}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}