/* roulang page: index */
:root{
  --bg:#060A12; --panel:#0B1220; --panel-2:#101A2C; --footer-bg:#04070D;
  --primary:#35D6E6; --accent:#3FE0A0; --warm:#FFB454;
  --text:#E8F0FA; --text-2:#9FB2C8; --text-3:#6C7F96;
  --line:rgba(255,255,255,.08);
  --success:#3FE0A0; --warning:#FFB454; --error:#FF6B6B; --info:#35D6E6;
  --r-card:18px; --r-btn:12px; --r-img:14px; --r-badge:8px;
  --sh-card:0 12px 32px rgba(0,0,0,.45);
  --sh-hover:0 20px 48px rgba(0,0,0,.55), 0 0 0 1px rgba(53,214,230,.35);
  --sh-glow:0 0 24px rgba(53,214,230,.45);
  --glass-bg:rgba(255,255,255,.05);
  --glass-line:rgba(255,255,255,.10);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --mono:Inter,ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;padding:68px 0 80px;
  background:var(--bg);color:var(--text);
  font-family:var(--font);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--text);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:15px}
hr{border:0;border-top:1px solid var(--line)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1200px){.container{padding:0 40px}}
.section{padding:64px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section--tight{padding:48px 0}
@media (min-width:1024px){.section--tight{padding:64px 0}}
.section-head{max-width:720px;margin-bottom:32px}
@media (min-width:1024px){.section-head{margin-bottom:48px}}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--primary);font-weight:600;margin-bottom:12px}
.section-title{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700}
.section-desc{margin-top:14px;color:var(--text-2);font-size:15px;max-width:640px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ============ 顶栏 ============ */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;height:68px;background:rgba(6,10,18,.72);border-bottom:1px solid transparent;transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease}
.site-header.is-scrolled{background:rgba(6,10,18,.82);backdrop-filter:blur(14px) saturate(140%);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px}
.logo{font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--text);white-space:nowrap}
.logo span{color:var(--primary)}
.logo:hover{color:var(--text)}
.main-nav{display:none;align-items:center;gap:4px}
@media (min-width:1024px){.main-nav{display:flex}}
.nav-link{font-size:14px;padding:9px 13px;border-radius:var(--r-badge);color:var(--text-2);position:relative;white-space:nowrap}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link.is-active{color:var(--primary);background:rgba(53,214,230,.08)}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--r-badge);border:1px solid var(--line);color:var(--text-2)}
.nav-toggle:hover{color:var(--primary);border-color:rgba(53,214,230,.4)}
@media (min-width:1024px){.nav-toggle{display:none}}
.mobile-drawer{display:none;background:var(--panel);border-bottom:1px solid var(--line);padding:12px 20px 20px}
.mobile-drawer.is-open{display:block}
@media (min-width:1024px){.mobile-drawer{display:none !important}}
.drawer-link{display:block;padding:13px 12px;border-radius:var(--r-btn);color:var(--text-2);font-size:15px;border-bottom:1px solid var(--line)}
.drawer-link:last-of-type{border-bottom:0}
.drawer-link.is-active{color:var(--primary)}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);font-size:15px;font-weight:600;padding:13px 24px;transition:transform .18s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;border:1px solid transparent}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-primary{background:linear-gradient(135deg,#35D6E6,#3FE0A0);color:#04121A;box-shadow:0 8px 24px rgba(53,214,230,.18)}
.btn-primary:hover{color:#04121A;transform:translateY(-1px);box-shadow:var(--sh-glow)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(53,214,230,.22)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:rgba(53,214,230,.08)}
.btn-ghost:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.text-link{font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.text-link::after{content:"";display:block;height:1px;width:0;background:var(--primary);transition:width .18s ease}
.text-link:hover::after{width:100%}

/* ============ 通用徽章/标签 ============ */
.badge{display:inline-block;font-size:12px;line-height:1;padding:6px 10px;border-radius:var(--r-badge);background:rgba(53,214,230,.12);color:var(--primary);font-weight:600}
.badge--green{background:rgba(63,224,160,.12);color:var(--accent)}
.badge--warm{background:rgba(255,180,84,.14);color:var(--warm)}
.chip{display:inline-block;font-size:13px;padding:7px 13px;border-radius:999px;border:1px solid var(--line);color:var(--text-2)}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:44px 0 56px}
@media (min-width:1024px){.hero{padding:72px 0 88px}}
.hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(680px 340px at 12% 0%,rgba(53,214,230,.07),transparent 70%),
  radial-gradient(560px 300px at 92% 20%,rgba(63,224,160,.05),transparent 72%);
  pointer-events:none}
.hero-grid{position:relative;display:grid;gap:40px;align-items:center;grid-template-columns:1fr}
@media (min-width:1024px){.hero-grid{grid-template-columns:1fr 1fr;gap:56px}}
.hero-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);border:1px solid var(--line);border-radius:999px;padding:7px 14px;background:rgba(255,255,255,.03)}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block;box-shadow:0 0 10px rgba(63,224,160,.7)}
.hero h1{font-size:clamp(28px,4vw,46px);line-height:1.2;font-weight:700;letter-spacing:-.02em;margin:20px 0 0}
.hero-sub{margin-top:18px;font-size:16px;color:var(--text-2);max-width:540px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:28px}
.hero-points li{font-size:14px;color:var(--text-2);display:flex;align-items:center;gap:8px}
.hero-points li::before{content:"";width:14px;height:2px;border-radius:2px;background:var(--primary);display:block;flex:0 0 auto}
.hero-visual{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card)}
.hero-visual img{width:100%;height:100%;aspect-ratio:16/11;object-fit:cover;border-radius:0}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,18,.20) 0%,rgba(6,10,18,.72) 100%)}
.glass-float{position:absolute;z-index:2;background:var(--glass-bg);backdrop-filter:blur(14px) saturate(140%);border:1px solid var(--glass-line);border-radius:var(--r-badge);padding:12px 16px;display:flex;flex-direction:column;gap:2px;min-width:112px}
.glass-float .fnum{font-family:var(--mono);font-size:22px;font-weight:700;color:#fff;line-height:1.1}
.glass-float .ftext{font-size:12px;color:var(--text-2)}
.float-a{left:16px;bottom:16px}
.float-b{right:16px;bottom:64px}
.float-c{right:16px;top:16px}
@media (max-width:480px){.float-b{display:none}.glass-float{padding:10px 12px;min-width:96px}.glass-float .fnum{font-size:18px}}

/* ============ 主张条 ============ */
.claim-bar{display:grid;grid-template-columns:1fr 1fr;gap:20px 24px;padding:26px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
@media (min-width:1024px){.claim-bar{grid-template-columns:repeat(4,1fr);gap:32px}}
.claim{display:flex;gap:14px;align-items:flex-start}
.claim-icon{flex:0 0 auto;width:38px;height:38px;border-radius:var(--r-badge);display:flex;align-items:center;justify-content:center;background:rgba(53,214,230,.10);color:var(--primary)}
.claim h3{font-size:15px;font-weight:600;line-height:1.4}
.claim p{font-size:13px;color:var(--text-3);margin-top:6px;line-height:1.7}

/* ============ 卡片通用 ============ */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.card:hover{transform:translateY(-2px);border-color:rgba(53,214,230,.35);box-shadow:var(--sh-hover)}
.card-media{position:relative;overflow:hidden;border-radius:0}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .25s ease-out}
.card:hover .card-media img{transform:scale(1.03)}
.card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,18,.05),rgba(6,10,18,.35))}
.card-media .badge{position:absolute;z-index:2;top:14px;left:14px}
.card-body{padding:20px 22px 24px}
.card-title{font-size:19px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-text{margin-top:10px;font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:16px;font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:10px}

/* ============ 精选拼贴 ============ */
.collage{display:grid;gap:24px}
@media (min-width:1024px){.collage{grid-template-columns:1.5fr 1fr;grid-template-rows:auto auto}}
.collage .card--feature{grid-row:auto}
@media (min-width:1024px){.collage .card--feature{grid-row:1 / span 2;display:flex;flex-direction:column}}
.collage .card--feature .card-media img{aspect-ratio:16/10}
.collage .card--feature .card-body{padding:24px 26px 28px}
.collage .card--feature .card-title{font-size:clamp(20px,2vw,26px);-webkit-line-clamp:3}
.collage .card--small{display:grid;grid-template-columns:132px 1fr;align-items:stretch}
@media (min-width:1024px){.collage .card--small{grid-template-columns:1fr 168px;grid-template-areas:"body media"}}
.collage .card--small .card-media{grid-area:media}
.collage .card--small .card-media img{height:100%;aspect-ratio:auto;min-height:120px}
.collage .card--small .card-body{grid-area:body;padding:18px 20px}
.collage .card--small .card-title{font-size:16px}
.collage .card--small .card-text{-webkit-line-clamp:2;font-size:13px}

/* ============ 故事区 ============ */
.story{display:grid;gap:32px;align-items:center}
@media (min-width:1024px){.story{grid-template-columns:1fr 1fr;gap:56px}.story--reverse .story-copy{order:2}}
.story-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-card)}
.story-media img{aspect-ratio:16/10;object-fit:cover;border-radius:0}
.story-copy h3{font-size:clamp(20px,2.2vw,26px)}
.story-copy p{margin-top:14px;font-size:15px;color:var(--text-2)}
.story-list{margin-top:20px;display:grid;gap:10px}
.story-list li{font-size:14px;color:var(--text-2);padding-left:18px;position:relative}
.story-list li::before{content:"";position:absolute;left:0;top:12px;width:8px;height:1px;background:var(--accent)}
.story + .story{margin-top:56px}
@media (min-width:1024px){.story + .story{margin-top:80px}}

/* ============ 分类通道 ============ */
.channel-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:640px){.channel-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.channel-grid{grid-template-columns:repeat(4,1fr)}}
.channel{display:block;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);padding:24px 22px;transition:transform .2s ease-out,border-color .2s ease,box-shadow .2s ease-out}
.channel:hover{transform:translateY(-2px);border-color:rgba(53,214,230,.35);box-shadow:var(--sh-hover);color:var(--text)}
.channel-icon{width:42px;height:42px;border-radius:var(--r-badge);display:flex;align-items:center;justify-content:center;background:rgba(63,224,160,.10);color:var(--accent);margin-bottom:16px}
.channel h3{font-size:17px;font-weight:600}
.channel p{margin-top:10px;font-size:13px;color:var(--text-3);line-height:1.7}
.channel .channel-more{margin-top:16px;font-size:13px;font-weight:600;color:var(--primary)}

/* ============ 资讯列表 ============ */
.news-list{display:grid;gap:0;border-top:1px solid var(--line)}
@media (min-width:1024px){.news-list{grid-template-columns:1fr 1fr;column-gap:48px}}
.news-row{display:grid;grid-template-columns:104px 1fr;gap:18px;padding:24px 0;border-bottom:1px solid var(--line);align-items:flex-start}
@media (min-width:768px){.news-row{grid-template-columns:168px 1fr;gap:24px;min-height:96px}}
.news-row-thumb{border-radius:var(--r-img);overflow:hidden;display:block}
.news-row-thumb img{aspect-ratio:16/10;object-fit:cover;width:100%}
.news-row .news-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);flex-wrap:wrap}
.news-row h3{font-size:17px;font-weight:600;margin-top:10px;line-height:1.5}
.news-row .news-sum{margin-top:8px;font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
@media (min-width:768px){.news-row .news-sum{-webkit-line-clamp:3}}
.empty-state{border:1px dashed var(--line);border-radius:var(--r-card);padding:48px 24px;text-align:center;background:var(--panel)}
.empty-state svg{color:var(--text-3);margin:0 auto 16px}
.empty-state p{color:var(--text-2);font-size:14px;margin-bottom:20px}

/* ============ 信任背书 ============ */
.stats{display:grid;grid-template-columns:1fr 1fr;gap:24px;padding:32px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
@media (min-width:1024px){.stats{grid-template-columns:repeat(4,1fr);gap:32px}}
.stat .num{font-family:var(--mono);font-size:clamp(26px,3vw,38px);font-weight:700;color:var(--primary);line-height:1.1}
.stat .lbl{margin-top:8px;font-size:13px;color:var(--text-3)}
.quote{margin-top:32px;background:var(--panel-2);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:var(--r-card);padding:24px 26px}
.quote p{font-size:15px;color:var(--text);line-height:1.85}
.quote footer{margin-top:14px;font-size:13px;color:var(--text-3)}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;min-height:56px;padding:16px 0;font-size:16px;font-weight:600;color:var(--text)}
.faq-q:hover{color:var(--primary)}
.faq-sign{flex:0 0 auto;width:20px;height:20px;position:relative;transition:transform .2s ease}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-sign::before{left:0;top:9px;width:20px;height:2px}
.faq-sign::after{left:9px;top:0;width:2px;height:20px}
.faq-item.is-open .faq-sign{transform:rotate(45deg);color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-a p{padding:0 0 20px;font-size:15px;line-height:1.8;color:var(--text-2);max-width:820px}

/* ============ CTA ============ */
.cta-wrap{display:flex;justify-content:center}
.cta-box{width:100%;max-width:860px;background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-card);padding:32px 24px;box-shadow:var(--sh-card)}
@media (min-width:768px){.cta-box{padding:44px 48px}}
.cta-box h2{font-size:clamp(22px,2.6vw,30px)}
.cta-box > p{margin-top:14px;color:var(--text-2);font-size:15px}
.form-grid{display:grid;gap:18px;margin-top:28px}
@media (min-width:640px){.form-grid{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;gap:8px}
.field--full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--text-2)}
.field input,.field select,.field textarea{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-btn);padding:12px 14px;color:var(--text);transition:border-color .2s ease,box-shadow .2s ease}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(53,214,230,.15);outline:none}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:24px}
.form-note{font-size:13px;color:var(--text-3)}
.alert{display:none;margin-top:20px;padding:14px 18px;border-radius:var(--r-btn);font-size:14px;background:rgba(63,224,160,.08);border-left:3px solid var(--success);color:var(--text)}
.alert.is-visible{display:block}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1.4fr;gap:32px}}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--text-2);max-width:360px}
.footer-contact{margin-top:12px;font-size:13px;color:var(--text-3)}
.footer-col h4{font-size:14px;color:var(--primary);font-weight:600}
.footer-col ul{margin-top:16px;display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:#fff}
.footer-bottom{margin-top:40px;border-top:1px solid var(--line);padding:20px 20px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--text-3)}
@media (min-width:768px){.footer-bottom{padding:20px 32px}}
@media (min-width:1200px){.footer-bottom{padding:20px 40px}}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

/* ============ 移动底部 Tab ============ */
.mobile-tabbar{position:fixed;left:0;right:0;bottom:0;z-index:70;display:grid;grid-template-columns:repeat(4,1fr);background:rgba(11,18,32,.94);backdrop-filter:blur(14px) saturate(140%);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
.tab-item{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;height:60px;font-size:10px;color:var(--text-3)}
.tab-item svg{width:22px;height:22px}
.tab-item.is-active{color:var(--primary)}
.tab-item.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:28px;height:3px;border-radius:2px;background:var(--primary);box-shadow:0 0 12px rgba(53,214,230,.7)}
@media (min-width:1024px){.mobile-tabbar{display:none}body{padding-bottom:0}}

/* 加载骨架（备用状态） */
.skeleton{background:var(--panel);border-radius:var(--r-card);overflow:hidden;position:relative}
.skeleton::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.05),transparent);animation:shimmer 1200ms infinite}
@keyframes shimmer{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}

/* roulang page: category1 */
:root{
  --bg:#060A12;
  --panel:#0B1220;
  --panel-2:#101A2C;
  --footer-bg:#04070D;
  --primary:#35D6E6;
  --accent:#3FE0A0;
  --amber:#FFB454;
  --text:#E8F0FA;
  --text-2:#9FB2C8;
  --text-3:#6C7F96;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --success:#3FE0A0;
  --warning:#FFB454;
  --danger:#FF6B6B;
  --info:#35D6E6;
  --r-card:18px;
  --r-btn:12px;
  --r-input:12px;
  --r-img:14px;
  --r-badge:8px;
  --sh-card:0 12px 32px rgba(0,0,0,.45);
  --sh-hover:0 20px 48px rgba(0,0,0,.55),0 0 0 1px rgba(53,214,230,.35);
  --sh-glow:0 0 24px rgba(53,214,230,.45);
  --glass-bg:rgba(255,255,255,.05);
  --glass-border:1px solid rgba(255,255,255,.10);
  --header-h:68px;
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  padding-top:var(--header-h);
  padding-bottom:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 340px at 12% -6%,rgba(53,214,230,.07),transparent 70%),
    radial-gradient(560px 300px at 92% 4%,rgba(63,224,160,.05),transparent 72%);
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--text);text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease);}
a:hover{color:var(--primary);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
@media (min-width:768px){.container{padding:0 32px;}}
@media (min-width:1200px){.container{padding:0 40px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:var(--header-h);
  display:flex;
  align-items:center;
  background:rgba(6,10,18,.72);
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),backdrop-filter var(--ease);
}
.site-header.is-scrolled{
  background:var(--glass-bg);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  color:#fff;
  white-space:nowrap;
}
.logo::before{
  content:"";
  width:9px;height:9px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 12px rgba(53,214,230,.7);
  flex:none;
}
.logo:hover{color:#fff;}
.main-nav{display:none;}
@media (min-width:1024px){
  .main-nav{display:flex;align-items:center;gap:4px;}
}
.nav-link{
  display:inline-block;
  padding:8px 14px;
  border-radius:var(--r-btn);
  font-size:14px;
  color:var(--text-2);
  border:1px solid transparent;
  transition:color var(--ease),background-color var(--ease),border-color var(--ease);
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.05);}
.nav-link.is-active{
  color:var(--primary);
  background:rgba(53,214,230,.10);
  border-color:rgba(53,214,230,.28);
}
.header-cta{
  display:none;
  align-items:center;
  gap:10px;
}
@media (min-width:1024px){.header-cta{display:flex;}}
.nav-toggle{
  width:42px;height:42px;
  border-radius:var(--r-btn);
  border:1px solid var(--line-strong);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{
  display:block;width:18px;height:2px;border-radius:2px;
  background:var(--text);
  transition:transform var(--ease),opacity var(--ease);
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
@media (min-width:1024px){.nav-toggle{display:none;}}
.drawer{
  position:fixed;
  top:var(--header-h);
  left:0;right:0;
  z-index:55;
  background:rgba(11,18,32,.98);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  padding:14px 20px 22px;
  display:grid;
  gap:6px;
  transform:translateY(-12px);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer .nav-link{padding:12px 14px;font-size:15px;border:1px solid var(--line);}
@media (min-width:1024px){.drawer{display:none;}}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#35D6E6 0%,#3FE0A0 100%);
  color:#04212A;
  box-shadow:0 0 24px rgba(53,214,230,.28);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 24px rgba(53,214,230,.45);color:#04212A;}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(53,214,230,.3);}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:var(--line-strong);
}
.btn-ghost:hover{
  color:var(--primary);
  border-color:var(--primary);
  background:rgba(53,214,230,.08);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(0);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-text{
  padding:0;
  color:var(--primary);
  border:none;
  background:none;
  position:relative;
  font-size:14px;
}
.btn-text::after{
  content:"";
  position:absolute;
  left:0;bottom:-3px;
  width:0;height:1px;
  background:var(--primary);
  transition:width 180ms ease-out;
}
.btn-text:hover::after{width:100%;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:var(--r-badge);
  font-size:12px;
  line-height:1.6;
  letter-spacing:.02em;
  background:rgba(53,214,230,.10);
  border:1px solid rgba(53,214,230,.28);
  color:var(--primary);
}
.badge-green{background:rgba(63,224,160,.10);border-color:rgba(63,224,160,.28);color:var(--accent);}
.badge-amber{background:rgba(255,180,84,.10);border-color:rgba(255,180,84,.28);color:var(--amber);}
.tag{
  display:inline-block;
  padding:5px 12px;
  border-radius:var(--r-badge);
  font-size:13px;
  color:var(--text-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
}
.tag:hover{color:var(--primary);border-color:rgba(53,214,230,.35);}

/* ============ 页首横幅 ============ */
.page-banner{
  position:relative;
  min-height:280px;
  display:flex;
  align-items:flex-end;
  background-image:
    linear-gradient(100deg,rgba(4,7,13,.94) 0%,rgba(6,10,18,.78) 48%,rgba(6,10,18,.44) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-banner::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,214,230,.55),transparent);
  opacity:.8;
}
.banner-inner{
  position:relative;
  z-index:2;
  padding:44px 0 40px;
  max-width:800px;
}
.banner-inner h1{
  font-size:clamp(28px,4vw,46px);
  line-height:1.2;
  font-weight:700;
  letter-spacing:-.02em;
  margin:14px 0 14px;
}
.banner-inner h1 em{
  font-style:normal;
  background:linear-gradient(135deg,#35D6E6,#3FE0A0);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.banner-lead{
  color:var(--text-2);
  font-size:16px;
  max-width:680px;
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-top:18px;
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--primary);}
.crumb span[aria-current]{color:var(--text-2);}

/* ============ 板块 ============ */
.section{padding:64px 0;}
@media (min-width:768px){.section{padding:96px 0;}}
.section-head{max-width:720px;margin-bottom:36px;}
.section-head h2{
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.015em;
  margin:12px 0 12px;
}
.section-head p{color:var(--text-2);font-size:15.5px;}
.section-alt{background:linear-gradient(180deg,rgba(11,18,32,0) 0%,rgba(11,18,32,.7) 22%,rgba(11,18,32,.7) 78%,rgba(11,18,32,0) 100%);}

/* ============ 图文卡片两列网格 ============ */
.card-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
}
@media (min-width:900px){
  .card-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
}
.feature-card{
  display:grid;
  grid-template-columns:1fr;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
@media (min-width:560px){
  .feature-card{grid-template-columns:180px 1fr;}
}
@media (min-width:900px){
  .feature-card{grid-template-columns:196px 1fr;}
}
.feature-card:hover{
  transform:translateY(-2px);
  border-color:rgba(53,214,230,.45);
  box-shadow:var(--sh-hover);
}
.feature-media{
  position:relative;
  overflow:hidden;
  background:var(--panel-2);
  min-height:170px;
}
.feature-media img{
  width:100%;height:100%;
  object-fit:cover;
  aspect-ratio:4/3;
  transition:transform 200ms ease-out;
}
.feature-card:hover .feature-media img{transform:scale(1.03);}
.feature-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,0) 45%,rgba(6,10,18,.55) 100%);
  pointer-events:none;
}
.feature-body{padding:22px 22px 24px;}
.feature-body h3{
  font-size:19px;
  line-height:1.4;
  font-weight:600;
  margin:12px 0 10px;
}
.feature-body p{
  color:var(--text-2);
  font-size:14.5px;
  line-height:1.8;
}
.feature-meta{
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ============ 数据条 ============ */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
}
@media (min-width:900px){.stat-strip{grid-template-columns:repeat(4,1fr);}}
.stat{
  background:var(--panel);
  padding:26px 22px;
}
.stat-num{
  font-family:"Inter",ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:clamp(26px,3.2vw,34px);
  font-weight:700;
  line-height:1.1;
  color:var(--primary);
  letter-spacing:-.01em;
}
.stat-label{
  display:block;
  margin-top:8px;
  font-size:14px;
  color:var(--text-2);
}

/* ============ 支持内容行列表 ============ */
.info-list{
  border-top:1px solid var(--line);
}
.info-row{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:16px 18px;
  align-items:start;
  padding:22px 4px;
  border-bottom:1px solid var(--line);
  transition:background-color var(--ease);
}
@media (min-width:860px){
  .info-row{grid-template-columns:56px 260px 1fr auto;align-items:center;}
}
.info-row:hover{background:rgba(53,214,230,.035);}
.info-index{
  font-family:"Inter",ui-monospace,monospace;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--primary);
  border:1px solid rgba(53,214,230,.28);
  border-radius:var(--r-badge);
  padding:3px 9px;
  justify-self:start;
}
.info-title{
  font-size:16.5px;
  font-weight:600;
  line-height:1.5;
}
.info-desc{
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.8;
}
.info-flag{
  font-size:13px;
  color:var(--accent);
  white-space:nowrap;
}

/* ============ 相关分类入口 ============ */
.entry-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
@media (min-width:768px){.entry-grid{grid-template-columns:repeat(3,1fr);}}
.entry-card{
  display:flex;
  flex-direction:column;
  padding:24px;
  border-radius:var(--r-card);
  background:var(--panel-2);
  border:1px solid var(--line);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.entry-card:hover{
  transform:translateY(-2px);
  border-color:rgba(53,214,230,.45);
  box-shadow:var(--sh-hover);
}
.entry-card h3{font-size:18px;font-weight:600;margin:14px 0 10px;color:#fff;}
.entry-card p{font-size:14.5px;color:var(--text-2);flex:1;}
.entry-card .btn-text{margin-top:18px;align-self:flex-start;}

/* ============ 评价条 ============ */
.quote-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:18px;
  padding:20px 24px;
  border-radius:var(--r-card);
  background:var(--glass-bg);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:var(--glass-border);
  box-shadow:var(--sh-card);
}
.quote-bar p{font-size:15px;color:var(--text);}
.quote-bar cite{
  font-style:normal;
  font-size:13px;
  color:var(--text-3);
  padding-left:18px;
  border-left:1px solid var(--line-strong);
}

/* ============ CTA / 表单 ============ */
.cta-panel{
  max-width:880px;
  margin:0 auto;
  padding:32px 24px;
  border-radius:var(--r-card);
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
}
@media (min-width:768px){.cta-panel{padding:44px 44px 40px;}}
.cta-panel h2{
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.3;
  font-weight:700;
  margin:12px 0 12px;
}
.cta-panel > p{color:var(--text-2);font-size:15.5px;max-width:620px;}
.form-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:18px;
  margin-top:28px;
}
@media (min-width:720px){
  .form-grid{grid-template-columns:1fr 1fr;}
  .form-grid .field-full{grid-column:1 / -1;}
}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13px;color:var(--text-2);}
.field input,.field select,.field textarea{
  width:100%;
  background:var(--panel);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-input);
  padding:12px 14px;
  font-size:15px;
  color:var(--text);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(53,214,230,.15);
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.field .hint{font-size:13px;color:var(--text-3);}
.field .err{font-size:14px;color:var(--danger);display:none;}
.field.has-error .err{display:block;}
.field.has-error input{border-color:var(--danger);}
.form-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-top:24px;
}
.notice{
  display:none;
  align-items:center;
  gap:10px;
  margin-top:20px;
  padding:12px 16px;
  border-radius:var(--r-btn);
  font-size:14px;
  background:rgba(63,224,160,.08);
  border-left:3px solid var(--success);
  color:var(--text);
}
.notice.is-visible{display:flex;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--footer-bg);
  border-top:1px solid var(--line);
  padding:56px 0 0;
  margin-top:24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  padding-bottom:40px;
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;}
}
.footer-brand p{
  margin-top:14px;
  font-size:14px;
  color:var(--text-2);
  max-width:280px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  margin-bottom:16px;
  letter-spacing:.01em;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:#fff;}
.footer-sub{
  display:flex;
  gap:10px;
  margin-top:14px;
}
.footer-sub input{
  flex:1;
  min-width:0;
  background:var(--panel);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-input);
  padding:10px 12px;
  font-size:14px;
  color:var(--text);
}
.footer-sub input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(53,214,230,.15);
}
.footer-sub button{
  padding:10px 16px;
  border-radius:var(--r-btn);
  font-size:14px;
  font-weight:600;
  color:#04212A;
  background:linear-gradient(135deg,#35D6E6,#3FE0A0);
  transition:box-shadow var(--ease),transform var(--ease);
}
.footer-sub button:hover{box-shadow:var(--sh-glow);transform:translateY(-1px);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:20px 20px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
@media (min-width:768px){.footer-bottom{padding:20px 32px;}}
@media (min-width:1200px){.footer-bottom{padding:20px 40px;}}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ============ 移动底部 Tab ============ */
.mobile-tab{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  display:grid;
  grid-template-columns:repeat(5,1fr);
  background:rgba(4,7,13,.96);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom,0);
}
@media (min-width:1024px){.mobile-tab{display:none;}}
.tab-item{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  height:60px;
  font-size:10px;
  color:var(--text-3);
  transition:color var(--ease);
}
.tab-item svg{width:22px;height:22px;display:block;}
.tab-item.is-active{color:var(--primary);}
.tab-item.is-active::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:26px;height:3px;
  border-radius:0 0 3px 3px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(53,214,230,.75);
}
.tab-item:hover{color:var(--primary);}
@media (max-width:1023px){
  body{padding-bottom:76px;}
}

/* ============ 入场动画 ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 520ms ease-out,transform 520ms ease-out;}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
}

/* roulang page: article */
:root{
    --bg:#060A12;
    --panel:#0B1220;
    --panel-2:#101A2C;
    --footer-bg:#04070D;
    --primary:#35D6E6;
    --accent:#3FE0A0;
    --amber:#FFB454;
    --text:#E8F0FA;
    --muted:#9FB2C8;
    --weak:#6C7F96;
    --line:rgba(255,255,255,.08);
    --success:#3FE0A0;
    --warning:#FFB454;
    --error:#FF6B6B;
    --radius-card:18px;
    --radius-btn:12px;
    --radius-img:14px;
    --radius-badge:8px;
    --shadow-card:0 12px 32px rgba(0,0,0,.45);
    --shadow-hover:0 20px 48px rgba(0,0,0,.55),0 0 0 1px rgba(53,214,230,.35);
    --glow:0 0 24px rgba(53,214,230,.45);
    --container:1200px;
    --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
    --mono:Inter,ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
    --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
    margin:0;
    min-height:100vh;
    background:var(--bg);
    color:var(--text);
    font-family:var(--font);
    font-size:16px;
    line-height:1.85;
    letter-spacing:.01em;
}
body::before{
    content:"";
    position:fixed;
    inset:0;
    z-index:0;
    pointer-events:none;
    background:
        radial-gradient(620px 320px at 12% -6%,rgba(53,214,230,.10),transparent 70%),
        radial-gradient(700px 340px at 88% -2%,rgba(63,224,160,.07),transparent 72%);
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--text);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary);}
button{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding:0 20px;
    position:relative;
    z-index:1;
}
section{position:relative;z-index:1;}
/* ===== 顶部导航 ===== */
.site-header{
    position:fixed;
    top:0;left:0;right:0;
    z-index:60;
    height:var(--header-h);
    background:rgba(6,10,18,.62);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid transparent;
    transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
    background:rgba(6,10,18,.90);
    border-bottom-color:var(--line);
    box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.header-inner{
    display:flex;
    align-items:center;
    gap:20px;
    height:var(--header-h);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
    width:12px;height:12px;border-radius:4px;
    background:linear-gradient(135deg,var(--primary),var(--accent));
    box-shadow:0 0 14px rgba(53,214,230,.55);
}
.brand-text{
    font-size:18px;
    font-weight:700;
    letter-spacing:.01em;
    color:var(--text);
}
.brand:hover .brand-text{color:var(--primary);}
.main-nav{
    display:flex;
    align-items:center;
    gap:4px;
    margin-left:auto;
}
.nav-link{
    position:relative;
    font-size:15px;
    color:var(--muted);
    padding:8px 12px;
    border-radius:10px;
    white-space:nowrap;
    transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.06);}
.nav-link.is-active{color:var(--primary);background:rgba(53,214,230,.10);}
.header-cta{flex:0 0 auto;}
.nav-toggle{
    display:none;
    width:40px;height:40px;
    border-radius:var(--radius-btn);
    border:1px solid var(--line);
    background:rgba(255,255,255,.04);
    cursor:pointer;
    position:relative;
    flex:0 0 auto;
}
.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after{
    content:"";
    position:absolute;
    left:11px;right:11px;
    height:2px;
    border-radius:2px;
    background:var(--text);
    transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle::before{top:13px;}
.nav-toggle span{top:19px;}
.nav-toggle::after{top:25px;}
.nav-toggle.is-open::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span{opacity:0;}
.nav-toggle.is-open::after{transform:translateY(-6px) rotate(-45deg);}
.nav-drawer{
    position:fixed;
    top:var(--header-h);left:0;right:0;
    z-index:55;
    background:rgba(9,14,24,.97);
    backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    padding:10px 20px 18px;
    transform:translateY(-10px);
    opacity:0;
    pointer-events:none;
    transition:opacity .2s ease,transform .2s ease;
}
.nav-drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.nav-drawer a{
    display:block;
    padding:12px 4px;
    font-size:15px;
    color:var(--muted);
    border-bottom:1px solid var(--line);
}
.nav-drawer a:last-child{border-bottom:none;}
.nav-drawer a:hover,
.nav-drawer a.is-active{color:var(--primary);}
/* ===== 按钮 ===== */
.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:46px;
    padding:0 22px;
    border-radius:var(--radius-btn);
    border:1px solid transparent;
    font-size:15px;
    font-weight:600;
    letter-spacing:.01em;
    cursor:pointer;
    transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{
    background:linear-gradient(135deg,#35D6E6,#3FE0A0);
    color:#04121A;
    box-shadow:0 8px 20px rgba(53,214,230,.18);
}
.btn-primary:hover{color:#04121A;transform:translateY(-1px);box-shadow:var(--glow);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
    background:transparent;
    border-color:rgba(255,255,255,.18);
    color:var(--text);
}
.btn-ghost:hover{
    border-color:var(--primary);
    color:var(--primary);
    background:rgba(53,214,230,.08);
}
.btn-text{
    height:auto;
    padding:0;
    border:none;
    background:none;
    color:var(--primary);
    font-weight:600;
    position:relative;
}
.btn-text::after{
    content:"";
    position:absolute;
    left:0;bottom:-3px;
    height:1px;width:0;
    background:var(--primary);
    transition:width .18s ease;
}
.btn-text:hover::after{width:100%;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
/* ===== 主内容 ===== */
.page-main{
    padding-top:calc(var(--header-h) + 28px);
    padding-bottom:72px;
}
.crumb{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:8px;
    font-size:13px;
    color:var(--weak);
    margin-bottom:22px;
}
.crumb a{color:var(--weak);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:rgba(255,255,255,.20);}
.crumb .current{
    color:var(--muted);
    max-width:280px;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
    display:inline-block;
    vertical-align:bottom;
}
.article-head{
    max-width:860px;
    padding-bottom:22px;
    border-bottom:1px solid var(--line);
    margin-bottom:40px;
}
.article-head h1{
    font-size:clamp(26px,3.6vw,40px);
    line-height:1.25;
    margin-bottom:18px;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
}
.meta-row{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:14px;
    font-size:14px;
    color:var(--muted);
}
.badge{
    display:inline-flex;
    align-items:center;
    height:26px;
    padding:0 10px;
    border-radius:var(--radius-badge);
    font-size:12px;
    font-weight:600;
    letter-spacing:.02em;
    color:var(--primary);
    background:rgba(53,214,230,.12);
    border:1px solid rgba(53,214,230,.28);
}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--line);}
.article-layout{
    display:grid;
    grid-template-columns:minmax(0,1fr) 320px;
    gap:48px;
    align-items:start;
}
.article-col{max-width:760px;min-width:0;}
/* ===== 正文排版 ===== */
.article-body{
    font-size:16px;
    line-height:1.85;
    color:var(--text);
    word-break:break-word;
}
.article-body p{margin:0 0 18px;}
.article-body h2{
    font-size:clamp(21px,2.2vw,24px);
    line-height:1.35;
    margin:40px 0 16px;
}
.article-body h3{
    font-size:20px;
    line-height:1.4;
    margin:28px 0 12px;
    font-weight:600;
}
.article-body h4{font-size:17px;margin:22px 0 10px;font-weight:600;}
.article-body ul,
.article-body ol{margin:0 0 18px;padding-left:22px;}
.article-body ul li{list-style:disc;margin-bottom:8px;}
.article-body ol li{list-style:decimal;margin-bottom:8px;}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(53,214,230,.35);}
.article-body a:hover{border-bottom-color:var(--primary);}
.article-body blockquote{
    margin:24px 0;
    padding:14px 20px;
    border-left:3px solid var(--primary);
    border-radius:0 var(--radius-btn) var(--radius-btn) 0;
    background:var(--panel-2);
    color:var(--muted);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
    width:100%;
    border-radius:var(--radius-img);
    margin:24px auto;
    box-shadow:var(--shadow-card);
}
.article-body figure{margin:24px 0;}
.article-body figcaption{
    font-size:13px;
    color:var(--muted);
    text-align:center;
    margin-top:8px;
}
.article-body table{
    width:100%;
    border-collapse:collapse;
    margin:24px 0;
    font-size:15px;
    display:block;
    overflow-x:auto;
    white-space:nowrap;
}
.article-body th{
    background:#0D1626;
    color:var(--text);
    font-weight:600;
    text-align:left;
}
.article-body th,
.article-body td{
    padding:12px 16px;
    border:1px solid var(--line);
}
.article-body tr:nth-child(even) td{background:rgba(255,255,255,.02);}
.article-body pre{
    background:var(--footer-bg);
    border:1px solid var(--line);
    border-radius:var(--radius-btn);
    padding:18px 20px;
    overflow-x:auto;
    margin:24px 0;
    font-family:var(--mono);
    font-size:14px;
    line-height:1.7;
}
.article-body code{
    font-family:var(--mono);
    font-size:.94em;
    background:rgba(255,255,255,.06);
    padding:2px 6px;
    border-radius:6px;
}
.article-body pre code{background:none;padding:0;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}
/* ===== 空态 ===== */
.empty-state{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:56px 28px;
    text-align:center;
    box-shadow:var(--shadow-card);
}
.empty-state svg{
    width:46px;height:46px;
    stroke:var(--weak);
    fill:none;
    stroke-width:1.5;
    margin:0 auto 18px;
}
.empty-state h2{font-size:20px;margin-bottom:10px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:22px;}
/* ===== 标签行 ===== */
.tag-row{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:10px;
    margin-top:40px;
    padding-top:26px;
    border-top:1px solid var(--line);
}
.tag-row .tag-label{font-size:13px;color:var(--weak);margin-right:2px;}
.tag{
    display:inline-flex;
    align-items:center;
    height:30px;
    padding:0 14px;
    border-radius:var(--radius-badge);
    font-size:13px;
    color:var(--muted);
    background:rgba(255,255,255,.04);
    border:1px solid var(--line);
    transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.tag:hover{color:var(--primary);border-color:rgba(53,214,230,.4);background:rgba(53,214,230,.08);}
/* ===== 侧栏 ===== */
.side-col{display:flex;flex-direction:column;gap:22px;position:sticky;top:calc(var(--header-h) + 24px);}
.side-card{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:22px;
    box-shadow:var(--shadow-card);
}
.side-card h3{
    font-size:16px;
    margin-bottom:6px;
}
.side-card .side-desc{
    font-size:13px;
    color:var(--weak);
    line-height:1.7;
    margin-bottom:16px;
}
.side-links{display:flex;flex-direction:column;}
.side-links a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
    padding:11px 0;
    font-size:14px;
    color:var(--muted);
    border-bottom:1px solid var(--line);
    transition:color .18s ease,padding-left .18s ease;
}
.side-links a:last-child{border-bottom:none;}
.side-links a:hover{color:var(--primary);padding-left:4px;}
.side-links .arrow{color:var(--weak);font-size:13px;transition:color .18s ease;}
.side-links a:hover .arrow{color:var(--primary);}
.side-contact{
    background:var(--panel-2);
    border:1px solid rgba(53,214,230,.20);
}
.side-contact .side-hours{
    font-size:13px;
    color:var(--muted);
    margin-bottom:18px;
    line-height:1.7;
}
/* ===== 相关推荐 ===== */
.related{margin-top:64px;}
.section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:20px;
    margin-bottom:22px;
}
.section-head h2{font-size:clamp(20px,2.2vw,24px);}
.section-head p{font-size:14px;color:var(--weak);}
.related-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:20px;
}
.rel-card{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    box-shadow:var(--shadow-card);
    transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
    display:flex;
    flex-direction:column;
}
.rel-card:hover{
    transform:translateY(-2px);
    border-color:rgba(53,214,230,.45);
    box-shadow:var(--shadow-hover);
}
.rel-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out;}
.rel-card:hover .rel-thumb img{transform:scale(1.03);}
.rel-thumb::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(6,10,18,.10),rgba(6,10,18,.72));
}
.rel-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.rel-body h3{font-size:16px;line-height:1.45;}
.rel-body p{font-size:13px;color:var(--muted);line-height:1.7;}
/* ===== CTA ===== */
.cta-wrap{margin-top:72px;}
.cta-box{
    max-width:880px;
    margin:0 auto;
    background:linear-gradient(135deg,rgba(16,26,44,.96),rgba(11,18,32,.96));
    border:1px solid rgba(53,214,230,.22);
    border-radius:var(--radius-card);
    padding:44px 36px;
    text-align:center;
    box-shadow:var(--shadow-card);
    position:relative;
    overflow:hidden;
}
.cta-box::before{
    content:"";
    position:absolute;
    top:-90px;right:-60px;
    width:240px;height:240px;
    border-radius:50%;
    background:radial-gradient(circle,rgba(53,214,230,.18),transparent 70%);
}
.cta-box h2{
    font-size:clamp(21px,2.4vw,26px);
    margin-bottom:14px;
    position:relative;
}
.cta-box p{
    font-size:15px;
    color:var(--muted);
    max-width:620px;
    margin:0 auto 26px;
    position:relative;
}
.cta-actions{
    display:flex;
    align-items:center;
    justify-content:center;
    gap:14px;
    flex-wrap:wrap;
    position:relative;
}
/* ===== 页脚 ===== */
.site-footer{
    margin-top:96px;
    background:var(--footer-bg);
    border-top:1px solid var(--line);
    position:relative;
    z-index:1;
}
.footer-grid{
    display:grid;
    grid-template-columns:1.8fr 1fr 1fr 1.4fr;
    gap:32px;
    padding:56px 0 40px;
}
.footer-brand .brand-text{font-size:17px;}
.footer-brand p{
    font-size:14px;
    color:var(--muted);
    line-height:1.8;
    margin-top:14px;
    max-width:320px;
}
.footer-col h4{
    font-size:14px;
    color:var(--primary);
    font-weight:600;
    margin-bottom:16px;
    letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{
    font-size:14px;
    color:var(--muted);
}
.footer-col a:hover{color:#FFFFFF;}
.footer-sub p{font-size:14px;color:var(--muted);line-height:1.75;margin-bottom:14px;}
.footer-form{display:flex;gap:10px;flex-wrap:wrap;}
.footer-form input{
    flex:1 1 160px;
    height:44px;
    padding:0 14px;
    border-radius:var(--radius-btn);
    border:1px solid var(--line);
    background:var(--panel);
    color:var(--text);
    font-family:inherit;
    font-size:14px;
    transition:border-color .18s ease,box-shadow .18s ease;
}
.footer-form input::placeholder{color:var(--weak);}
.footer-form input:focus{
    outline:none;
    border-color:var(--primary);
    box-shadow:0 0 0 3px rgba(53,214,230,.15);
}
.footer-quote{
    font-size:13px;
    color:var(--weak);
    margin-top:16px;
    padding-left:12px;
    border-left:2px solid rgba(53,214,230,.4);
}
.footer-bottom{
    border-top:1px solid var(--line);
    padding:20px 0;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    font-size:13px;
    color:var(--weak);
}
.footer-bottom a{color:var(--weak);}
.footer-bottom a:hover{color:var(--primary);}
/* ===== 移动底部 Tab ===== */
.tabbar{
    display:none;
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:70;
    height:60px;
    padding-bottom:env(safe-area-inset-bottom);
    background:rgba(8,13,22,.95);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border-top:1px solid var(--line);
}
.tabbar a{
    position:relative;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:3px;
    font-size:10px;
    line-height:1;
    color:var(--weak);
    transition:color .18s ease;
}
.tabbar a svg{
    width:22px;height:22px;
    stroke:currentColor;
    fill:none;
    stroke-width:1.6;
    stroke-linecap:round;
    stroke-linejoin:round;
}
.tabbar a.is-active{color:var(--primary);}
.tabbar a.is-active::before{
    content:"";
    position:absolute;
    top:0;left:50%;
    transform:translateX(-50%);
    width:22px;height:3px;
    border-radius:0 0 3px 3px;
    background:var(--primary);
    box-shadow:0 0 12px rgba(53,214,230,.6);
}
/* ===== 响应式 ===== */
@media (max-width:1199px){
    .container{padding:0 32px;}
    .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:28px;}
    .footer-sub{grid-column:1 / -1;}
}
@media (max-width:1023px){
    .container{padding:0 32px;}
    .main-nav,.header-cta{display:none;}
    .nav-toggle{display:block;margin-left:auto;}
    .article-layout{grid-template-columns:1fr;gap:40px;}
    .article-col{max-width:100%;}
    .side-col{position:static;}
    .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .tabbar{display:grid;grid-template-columns:repeat(5,1fr);}
    body{padding-bottom:calc(60px + env(safe-area-inset-bottom));}
    .page-main{padding-bottom:48px;}
    .section-head{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:767px){
    .container{padding:0 20px;}
    .article-head{margin-bottom:28px;padding-bottom:18px;}
    .article-head h1{-webkit-line-clamp:3;}
    .page-main{padding-top:calc(var(--header-h) + 20px);}
    .related-grid{grid-template-columns:1fr;}
    .cta-box{padding:34px 22px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding:44px 0 32px;}
    .footer-brand{grid-column:1 / -1;}
    .site-footer{margin-top:64px;}
    .crumb .current{max-width:180px;}
    .article-body table{font-size:14px;}
}
@media (max-width:520px){
    .brand-text{font-size:16px;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
    .related{margin-top:48px;}
    .cta-wrap{margin-top:52px;}
    .btn{width:100%;}
    .cta-actions{flex-direction:column;}
    .tabbar a{font-size:9px;}
}

/* roulang page: category2 */
:root{
  --bg:#060A12;
  --panel:#0B1220;
  --panel-2:#101A2C;
  --footer-bg:#04070D;
  --primary:#35D6E6;
  --accent:#3FE0A0;
  --warm:#FFB454;
  --text:#E8F0FA;
  --text-2:#9FB2C8;
  --text-3:#6C7F96;
  --line:rgba(255,255,255,.08);
  --success:#3FE0A0;
  --warning:#FFB454;
  --danger:#FF6B6B;
  --info:#35D6E6;
  --glass:rgba(255,255,255,.05);
  --glass-border:rgba(255,255,255,.10);
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --r-badge:8px;
  --sh-card:0 12px 32px rgba(0,0,0,.45);
  --sh-hover:0 20px 48px rgba(0,0,0,.55),0 0 0 1px rgba(53,214,230,.35);
  --sh-glow:0 0 24px rgba(53,214,230,.45);
  --max:1200px;
  --mono:Inter,ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary)}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;letter-spacing:-0.02em;line-height:1.3}
p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}
::selection{background:rgba(53,214,230,.28)}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1200px){.container{padding:0 40px}}

.section{padding:64px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section-tight{padding:48px 0}
@media (min-width:1024px){.section-tight{padding:64px 0}}

.section-head{max-width:720px;margin-bottom:36px}
.section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;letter-spacing:-0.02em}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--primary);
  text-transform:uppercase;margin-bottom:14px;font-weight:600;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary);opacity:.7}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,18,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,18,.88);
  border-bottom-color:var(--line);
  box-shadow:0 12px 32px rgba(0,0,0,.45);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:-0.01em;color:var(--text)}
.logo:hover{color:var(--primary)}
.logo-mark{
  width:30px;height:30px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  display:inline-flex;align-items:center;justify-content:center;
  color:#04121A;font-size:13px;font-weight:800;font-family:var(--mono);
  box-shadow:0 0 18px rgba(53,214,230,.35);
}
.main-nav{display:none;align-items:center;gap:4px}
@media (min-width:1024px){.main-nav{display:flex}}
.nav-link{
  position:relative;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(53,214,230,.6);
}
.header-actions{display:flex;align-items:center;gap:10px}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:var(--r-btn);
  background:var(--glass);border:1px solid var(--glass-border);
  cursor:pointer;transition:border-color .18s ease,background .18s ease;
}
.menu-toggle:hover{border-color:var(--primary);background:rgba(53,214,230,.08)}
@media (min-width:1024px){.menu-toggle{display:none}}

.mobile-drawer{
  display:none;border-top:1px solid var(--line);
  background:rgba(11,18,32,.98);
  padding:14px 20px 22px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{
  display:block;padding:13px 12px;border-radius:10px;
  font-size:15px;color:var(--text-2);
}
.mobile-drawer a:hover{background:rgba(255,255,255,.05);color:var(--text)}
.mobile-drawer a.is-active{color:var(--primary);font-weight:600;background:rgba(53,214,230,.08)}
@media (min-width:1024px){.mobile-drawer{display:none !important}}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:grid;grid-template-columns:repeat(5,1fr);
  background:rgba(4,7,13,.94);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom,0);
}
@media (min-width:1024px){.mobile-tabbar{display:none}}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;height:60px;font-size:10px;color:var(--text-3);
  transition:color .18s ease;
}
.tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.tab-item:hover{color:var(--text-2)}
.tab-item.is-active{color:var(--primary)}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:3px;border-radius:0 0 3px 3px;
  background:var(--primary);box-shadow:0 0 12px rgba(53,214,230,.8);
}
@media (max-width:1023px){body{padding-bottom:76px}}

/* ---------- 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;
  cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:linear-gradient(135deg,#35D6E6,#3FE0A0);color:#04121A}
.btn-primary:hover{color:#04121A;transform:translateY(-1px);box-shadow:var(--sh-glow)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);background:rgba(53,214,230,.08);color:var(--primary);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.link-more{
  display:inline-block;font-size:14px;font-weight:600;color:var(--primary);
  background-image:linear-gradient(var(--primary),var(--primary));
  background-size:0% 1px;background-repeat:no-repeat;background-position:0 100%;
  transition:background-size .18s ease;
}
.link-more:hover{background-size:100% 1px}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-badge);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(255,255,255,.06);color:var(--text-2);
  border:1px solid var(--line);
}
.badge-primary{background:rgba(53,214,230,.14);color:var(--primary);border-color:rgba(53,214,230,.35)}
.badge-accent{background:rgba(63,224,160,.13);color:var(--accent);border-color:rgba(63,224,160,.32)}
.badge-warm{background:rgba(255,180,84,.13);color:var(--warm);border-color:rgba(255,180,84,.32)}

.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--r-badge);
  font-size:13px;color:var(--text-2);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:border-color .18s ease,color .18s ease;
}
.tag:hover{border-color:rgba(53,214,230,.4);color:var(--text)}

/* ---------- 页首横幅 ---------- */
.page-banner{
  position:relative;overflow:hidden;
  min-height:260px;display:flex;align-items:center;
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
@media (min-width:1024px){.page-banner{min-height:300px}}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,.72),rgba(6,10,18,.94)),
             radial-gradient(900px 340px at 50% 0%,rgba(53,214,230,.18),transparent 70%);
}
.page-banner::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,214,230,.55),transparent);
}
.banner-inner{position:relative;z-index:2;width:100%;padding:48px 0}
@media (min-width:1024px){.banner-inner{padding:64px 0}}
.banner-center{text-align:center;max-width:900px;margin:0 auto}
.banner-center h1{margin-top:16px}
.banner-center .banner-sub{margin:16px auto 0}
.banner-inner h1{font-size:clamp(28px,4vw,46px);font-weight:700;letter-spacing:-0.02em}
.banner-sub{max-width:640px;color:var(--text-2);font-size:15px}
.banner-meta{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:22px;
}
.banner-meta .meta-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-badge);
  background:var(--glass);border:1px solid var(--glass-border);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  font-size:13px;color:var(--text-2);
}
.banner-meta .meta-chip b{color:var(--text);font-family:var(--mono);font-weight:700}

/* ---------- 引导区 ---------- */
.intro-grid{display:grid;gap:28px}
@media (min-width:1024px){.intro-grid{grid-template-columns:7fr 5fr;gap:48px;align-items:start}}
.intro-lead{font-size:17px;color:var(--text);line-height:1.9}
.intro-lead strong{color:var(--primary);font-weight:600}
.intro-copy{margin-top:18px;color:var(--text-2);font-size:15px}
.figure-card{
  border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--panel);
  box-shadow:var(--sh-card);
}
.figure-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.figure-card figcaption{
  padding:14px 18px;font-size:13px;color:var(--text-3);
  border-top:1px solid var(--line);
}

/* ---------- 指标 ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(2,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
}
@media (min-width:768px){.metrics{grid-template-columns:repeat(4,1fr)}}
.metric{background:var(--panel);padding:24px 20px}
.metric .num{
  font-family:var(--mono);font-size:clamp(24px,3vw,34px);font-weight:700;
  color:var(--primary);letter-spacing:-0.02em;line-height:1.2;
}
.metric .num span{font-size:14px;color:var(--text-2);margin-left:4px;font-weight:500}
.metric .label{margin-top:8px;font-size:14px;color:var(--text-2)}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:56px;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:19px;top:14px;bottom:14px;width:1px;
  background:linear-gradient(180deg,rgba(53,214,230,.55),rgba(63,224,160,.35),rgba(255,255,255,.05));
}
.timeline-item{position:relative;padding-bottom:34px}
.timeline-item:last-child{padding-bottom:0}
.timeline-dot{
  position:absolute;left:-56px;top:0;
  width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:14px;font-weight:700;color:var(--primary);
  background:var(--panel-2);border:1px solid rgba(53,214,230,.45);
  box-shadow:0 0 0 6px rgba(6,10,18,1),0 0 18px rgba(53,214,230,.22);
}
.timeline-body{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px 24px;
  box-shadow:var(--sh-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.timeline-body:hover{transform:translateY(-2px);border-color:rgba(53,214,230,.4);box-shadow:var(--sh-hover)}
.timeline-body h3{font-size:20px;font-weight:600}
.timeline-body p{margin-top:12px;color:var(--text-2);font-size:15px}
.timeline-body .tag-row{margin-top:16px}
@media (max-width:767px){
  .timeline{padding-left:44px}
  .timeline::before{left:14px}
  .timeline-dot{left:-44px;width:30px;height:30px;font-size:12px}
  .timeline-body{padding:18px 18px}
  .timeline-body h3{font-size:17px}
}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:600px){.scene-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.scene-grid{grid-template-columns:repeat(3,1fr)}}
.card{
  position:relative;
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.card:hover{transform:translateY(-2px);border-color:rgba(53,214,230,.4);box-shadow:var(--sh-hover)}
.card h3{font-size:17px;font-weight:600}
.card p{margin-top:10px;color:var(--text-2);font-size:14px}
.card .card-icon{
  width:40px;height:40px;border-radius:12px;margin-bottom:16px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(53,214,230,.12);border:1px solid rgba(53,214,230,.28);
}
.card .card-icon svg{width:20px;height:20px;stroke:var(--primary);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 节奏三段 ---------- */
.phase-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:900px){.phase-grid{grid-template-columns:repeat(3,1fr)}}
.phase{
  background:var(--panel-2);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 24px;
}
.phase .phase-label{font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--accent)}
.phase h3{margin-top:10px;font-size:19px}
.phase ul{margin-top:16px;display:grid;gap:10px}
.phase li{
  position:relative;padding-left:18px;font-size:14px;color:var(--text-2);
}
.phase li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--primary);opacity:.75;
}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;max-width:900px}
.faq-item{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:rgba(53,214,230,.4);box-shadow:var(--sh-card)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:16px 22px;text-align:left;
  background:transparent;border:0;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-q:hover{color:var(--primary)}
.faq-sign{
  position:relative;width:20px;height:20px;flex:0 0 auto;
  transition:transform .2s ease;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-sign::before{left:0;top:9px;width:20px;height:2px}
.faq-sign::after{left:9px;top:0;width:2px;height:20px}
.faq-item.is-open .faq-sign{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .2s ease;
}
.faq-a p{
  padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--text-2);
}

/* ---------- 表单 / CTA ---------- */
.cta-wrap{
  max-width:900px;margin:0 auto;
  background:linear-gradient(160deg,#0B1220,#101A2C);
  border:1px solid rgba(53,214,230,.22);
  border-radius:var(--r-card);
  padding:32px 24px;
  box-shadow:var(--sh-card);
}
@media (min-width:768px){.cta-wrap{padding:44px 40px}}
.cta-wrap h2{font-size:clamp(22px,2.6vw,30px)}
.cta-wrap > p{margin-top:14px;color:var(--text-2);font-size:15px}
.form-grid{display:grid;gap:18px;margin-top:26px}
@media (min-width:768px){.form-grid{grid-template-columns:repeat(2,1fr)}}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:13px;color:var(--text-2)}
.field input,.field select,.field textarea{
  width:100%;background:#0B1220;border:1px solid var(--line);
  border-radius:var(--r-btn);padding:12px 14px;font-size:15px;
  color:var(--text);transition:border-color .18s ease,box-shadow .18s ease;
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(53,214,230,.15);
}
.field-full{grid-column:1/-1}
.field .err{font-size:14px;color:var(--danger);display:none}
.field.has-error input{border-color:var(--danger)}
.field.has-error .err{display:block}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:24px}
.form-note{font-size:13px;color:var(--text-3)}
.notice{
  display:flex;gap:12px;align-items:flex-start;
  border-left:3px solid var(--accent);
  background:rgba(63,224,160,.07);
  border-radius:0 var(--r-btn) var(--r-btn) 0;
  padding:14px 18px;font-size:14px;color:var(--text-2);
  margin-top:22px;
}

/* ---------- 相关入口 ---------- */
.related-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:768px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.related-card{
  display:block;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.related-card:hover{transform:translateY(-2px);border-color:rgba(53,214,230,.4);box-shadow:var(--sh-hover);color:inherit}
.related-card h3{font-size:17px}
.related-card p{margin-top:10px;font-size:14px;color:var(--text-2)}
.related-card .link-more{margin-top:16px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);margin-top:8px}
.footer-grid{
  display:grid;gap:32px;padding:56px 0 36px;
  grid-template-columns:1fr;
}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1.2fr}}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:340px}
.footer-quote{
  margin-top:14px;padding-left:14px;border-left:2px solid rgba(53,214,230,.5);
  font-size:13px;color:var(--text-3);
}
.footer-col h4{font-size:14px;color:var(--primary);margin-bottom:16px;font-weight:600}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:20px 0 26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* roulang page: category3 */
:root{
  --bg:#060A12;
  --panel:#0B1220;
  --panel-2:#101A2C;
  --footer-bg:#04070D;
  --primary:#35D6E6;
  --primary-2:#3FE0A0;
  --accent:#FFB454;
  --text:#E8F0FA;
  --text-2:#9FB2C8;
  --text-3:#6C7F96;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --ok:#3FE0A0;
  --warn:#FFB454;
  --err:#FF6B6B;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --radius-badge:8px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --shadow-hover:0 20px 48px rgba(0,0,0,.55), 0 0 0 1px rgba(53,214,230,.35);
  --shadow-glow:0 0 24px rgba(53,214,230,.45);
  --glass-bg:rgba(255,255,255,.05);
  --glass-border:1px solid rgba(255,255,255,.10);
  --maxw:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(53,214,230,.10), transparent 60%),
    radial-gradient(900px 500px at 8% 12%, rgba(63,224,160,.07), transparent 65%),
    var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--text);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary)}
button{font:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(28px,4vw,44px);line-height:1.22;font-weight:700;letter-spacing:-.02em}
h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
h3{font-size:20px;line-height:1.4;font-weight:600}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1200px){.container{padding:0 40px}}
section{padding:64px 0}
@media (min-width:1024px){section{padding:96px 0}}
.mono{font-family:Inter,ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,18,.78);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(6,10,18,.92)}
.header-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;
}
.brand::before{
  content:"";width:10px;height:10px;border-radius:3px;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:0 0 14px rgba(53,214,230,.7);
}
.main-nav{display:none;margin-left:auto;gap:4px;align-items:center}
.main-nav .nav-link{
  display:inline-block;padding:8px 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);
  transition:color .18s ease,background .18s ease;
}
.main-nav .nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.main-nav .nav-link.is-active{color:var(--primary);background:rgba(53,214,230,.10)}
.header-cta{display:none;margin-left:8px}
.nav-toggle{
  margin-left:auto;display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);
  background:transparent;color:var(--text);
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-drawer{
  display:none;padding:8px 0 20px;border-top:1px solid var(--line);
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{
  display:block;padding:14px 4px;font-size:16px;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.is-active{color:var(--primary)}
@media (min-width:1024px){
  .main-nav{display:flex}
  .header-cta{display:inline-flex}
  .nav-toggle{display:none}
  .mobile-drawer{display:none !important}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;
  transition:transform .18s ease,box-shadow .2s ease,background .2s ease,color .18s ease,border-color .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,#35D6E6,#3FE0A0);
  color:#06121A;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-1px);color:#06121A;box-shadow:0 0 32px rgba(53,214,230,.6)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);background:rgba(53,214,230,.08);color:var(--primary)}
.btn-ghost:active{transform:translateY(1px)}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.btn-sm{padding:9px 16px;font-size:14px}

/* ---------- 页首横幅 ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:0}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(6,10,18,.96) 0%,rgba(6,10,18,.86) 46%,rgba(6,10,18,.58) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding:48px 0 56px;max-width:780px}
@media (min-width:1024px){.page-hero-inner{padding:64px 0 76px}}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--text-2)}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--radius-badge);
  font-size:12px;letter-spacing:.04em;color:var(--primary);
  background:rgba(53,214,230,.10);border:1px solid rgba(53,214,230,.28);
  margin-bottom:20px;
}
.hero-lead{margin-top:18px;font-size:16px;color:var(--text-2);max-width:660px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--radius-badge);
  font-size:13px;color:var(--text-2);
  background:rgba(255,255,255,.05);border:var(--glass-border);
}

/* ---------- 通用板块标题 ---------- */
.section-head{max-width:720px;margin-bottom:36px}
.section-head .eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.08em;color:var(--primary-2);
  margin-bottom:12px;
}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15.5px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- 服务速览条 ---------- */
.feature-strip{
  display:grid;gap:20px;
  grid-template-columns:1fr;
  padding:26px 0 6px;
}
@media (min-width:640px){.feature-strip{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.feature-strip{grid-template-columns:repeat(4,1fr);gap:28px}}
.feature-item{display:flex;flex-direction:column;gap:8px;padding-left:16px;border-left:2px solid rgba(53,214,230,.35)}
.feature-item .f-num{font-family:Inter,ui-monospace,monospace;font-size:22px;font-weight:700;color:var(--primary)}
.feature-item .f-title{font-size:15px;font-weight:600}
.feature-item .f-desc{font-size:14px;color:var(--text-2);line-height:1.7}

/* ---------- 对比表 ---------- */
.table-scroll{overflow-x:auto;border-radius:var(--radius-card);border:1px solid var(--line);background:var(--panel)}
.compare-table{width:100%;min-width:880px;border-collapse:collapse;font-size:14.5px}
.compare-table caption{text-align:left;padding:18px 22px;font-size:14px;color:var(--text-3);border-bottom:1px solid var(--line)}
.compare-table th,.compare-table td{padding:16px 22px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.compare-table thead th{
  background:rgba(255,255,255,.03);
  font-size:13px;letter-spacing:.04em;color:var(--primary-2);font-weight:600;
  white-space:nowrap;
}
.compare-table tbody tr{transition:background .18s ease}
.compare-table tbody tr:hover{background:rgba(53,214,230,.05)}
.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table .t-name{font-weight:600;color:var(--text);white-space:nowrap}
.compare-table .t-price{font-family:Inter,ui-monospace,monospace;color:var(--accent);white-space:nowrap}
.compare-cards{display:none}
.compare-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px;box-shadow:var(--shadow-card);
}
.compare-card h3{font-size:17px;margin-bottom:12px}
.spec-row{display:flex;justify-content:space-between;gap:14px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px}
.spec-row:last-child{border-bottom:none}
.spec-row dt{color:var(--text-3);flex:0 0 84px}
.spec-row dd{margin:0;color:var(--text-2);text-align:right;flex:1}
@media (max-width:767px){
  .table-scroll{display:none}
  .compare-cards{display:grid;gap:18px}
}

/* ---------- 双栏规格块 ---------- */
.spec-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:960px){.spec-grid{grid-template-columns:1fr 1fr;gap:28px}}
.panel{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-card);
}
@media (min-width:768px){.panel{padding:32px}}
.panel-head{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.panel-head .dot{width:10px;height:10px;border-radius:3px;background:linear-gradient(135deg,var(--primary),var(--primary-2));box-shadow:0 0 12px rgba(53,214,230,.6)}
.panel-head h3{font-size:18px}
.panel ul li{
  position:relative;padding:11px 0 11px 20px;font-size:14.5px;color:var(--text-2);
  border-bottom:1px dashed var(--line);
}
.panel ul li:last-child{border-bottom:none}
.panel ul li::before{
  content:"";position:absolute;left:2px;top:22px;width:7px;height:7px;border-radius:2px;
  background:var(--primary-2);opacity:.75;
}
.panel ul li strong{color:var(--text);font-weight:600}

/* ---------- 时段卡 ---------- */
.slot-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:768px){.slot-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.slot-card{
  background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.slot-card:hover{transform:translateY(-2px);border-color:rgba(53,214,230,.4);box-shadow:var(--shadow-hover)}
.slot-card .s-tag{
  display:inline-block;padding:4px 10px;border-radius:var(--radius-badge);
  font-size:12px;color:var(--primary);background:rgba(53,214,230,.10);margin-bottom:14px;
}
.slot-card .s-tag.warm{color:var(--accent);background:rgba(255,180,84,.12)}
.slot-card .s-tag.ok{color:var(--primary-2);background:rgba(63,224,160,.12)}
.slot-card h3{font-size:17px;margin-bottom:10px}
.slot-card p{font-size:14px;color:var(--text-2)}
.slot-card .s-price{
  margin-top:16px;font-family:Inter,ui-monospace,monospace;font-size:24px;font-weight:700;color:var(--text);
}
.slot-card .s-price small{font-size:13px;color:var(--text-3);font-weight:400;margin-left:6px;font-family:inherit}

/* ---------- 场景条 ---------- */
.scene-list{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:900px){.scene-list{grid-template-columns:1fr 1fr;gap:20px}}
.scene-item{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.scene-item:hover{transform:translateY(-2px);border-color:rgba(53,214,230,.4);box-shadow:var(--shadow-hover)}
.scene-item img{width:76px;height:76px;flex:0 0 76px;object-fit:cover;border-radius:var(--radius-img)}
.scene-item h3{font-size:16px;margin-bottom:6px}
.scene-item p{font-size:14px;color:var(--text-2);line-height:1.7}

/* ---------- 流程 ---------- */
.flow-grid{display:grid;gap:20px;grid-template-columns:1fr;counter-reset:flow}
@media (min-width:768px){.flow-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.flow-card{
  position:relative;background:rgba(255,255,255,.03);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px 24px 24px;
}
.flow-card .step{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;margin-bottom:16px;
  background:linear-gradient(135deg,rgba(53,214,230,.22),rgba(63,224,160,.18));
  border:1px solid rgba(53,214,230,.35);
  font-family:Inter,ui-monospace,monospace;font-weight:700;color:var(--primary);font-size:15px;
}
.flow-card h3{font-size:17px;margin-bottom:8px}
.flow-card p{font-size:14px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .2s ease;
}
.faq-item.is-open{border-color:rgba(53,214,230,.4)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 22px;background:transparent;border:none;
  color:var(--text);font-size:16px;font-weight:600;text-align:left;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px;transition:transform .2s ease}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:2px;top:9px;width:16px;height:2px;border-radius:2px;background:var(--primary);
}
.faq-icon::after{transform:rotate(90deg)}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ---------- CTA 预约 ---------- */
.cta-wrap{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(11,18,32,.96),rgba(16,26,44,.92));
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px 24px;box-shadow:var(--shadow-card);
}
@media (min-width:768px){.cta-wrap{padding:44px 40px}}
@media (min-width:960px){
  .cta-wrap{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
}
.cta-wrap::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,214,230,.20),transparent 68%);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:2}
.cta-copy h2{margin-bottom:14px}
.cta-copy p{color:var(--text-2);font-size:15.5px;margin-bottom:18px}
.cta-points{display:grid;gap:10px;margin-bottom:22px}
.cta-points li{font-size:14.5px;color:var(--text-2);padding-left:18px;position:relative}
.cta-points li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--primary-2);
}
.form-panel{
  position:relative;z-index:2;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px;
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field select{
  width:100%;padding:12px 14px;font-size:15px;color:var(--text);
  background:#0B1220;border:1px solid var(--line-strong);border-radius:var(--radius-btn);
  transition:border-color .18s ease,box-shadow .18s ease;
  font-family:inherit;
}
.field input::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(53,214,230,.15);
}
.form-row{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:520px){.form-row{grid-template-columns:1fr 1fr}}
.form-note{font-size:13px;color:var(--text-3);margin-top:12px}
.form-alert{
  display:none;margin-top:14px;padding:12px 16px;font-size:14px;
  background:rgba(63,224,160,.10);border-left:3px solid var(--ok);border-radius:0 10px 10px 0;
  color:var(--text);
}
.form-alert.is-visible{display:block}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);padding:56px 0 0;margin-top:32px}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr}}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:360px}
.footer-quote{
  margin-top:16px !important;padding:12px 16px;border-left:3px solid rgba(53,214,230,.45);
  background:rgba(255,255,255,.03);border-radius:0 10px 10px 0;
  font-size:13.5px;color:var(--text-3);
}
.footer-col h4{font-size:14px;color:var(--primary);font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:var(--text-2)}
.footer-col ul li a:hover{color:#fff}
.footer-sub{display:flex;gap:10px;margin-top:14px}
.footer-sub input{
  flex:1;min-width:0;padding:10px 12px;font-size:14px;color:var(--text);
  background:#0B1220;border:1px solid var(--line-strong);border-radius:var(--radius-btn);
}
.footer-sub input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(53,214,230,.15)}
.footer-bottom{
  margin-top:44px;border-top:1px solid var(--line);padding:20px 20px 24px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:grid;grid-template-columns:repeat(5,1fr);
  background:rgba(6,10,18,.94);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar a{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;height:60px;font-size:10px;color:var(--text-3);
  transition:color .18s ease;
}
.mobile-tabbar a::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:0;height:3px;border-radius:0 0 3px 3px;background:var(--primary);
  transition:width .2s ease;
}
.mobile-tabbar a svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.mobile-tabbar a.is-active{color:var(--primary);text-shadow:0 0 12px rgba(53,214,230,.5)}
.mobile-tabbar a.is-active::before{width:26px}
@media (min-width:1024px){.mobile-tabbar{display:none}}
@media (max-width:1023px){body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}}

/* roulang page: category4 */
:root{
  --bg:#060A12;
  --panel:#0B1220;
  --panel-2:#101A2C;
  --footer-bg:#04070D;
  --primary:#35D6E6;
  --secondary:#3FE0A0;
  --accent:#FFB454;
  --text:#E8F0FA;
  --muted:#9FB2C8;
  --faint:#6C7F96;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --ok:#3FE0A0;
  --warn:#FFB454;
  --err:#FF6B6B;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --radius-badge:8px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --shadow-hover:0 20px 48px rgba(0,0,0,.55), 0 0 0 1px rgba(53,214,230,.35);
  --glow:0 0 24px rgba(53,214,230,.45);
  --glass:rgba(255,255,255,.05);
  --glass-border:rgba(255,255,255,.10);
  --max:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

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

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

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(700px 400px at 88% 4%, rgba(53,214,230,.07), transparent 70%),
    radial-gradient(600px 380px at 6% 62%, rgba(63,224,160,.05), transparent 72%);
}

img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--primary);}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:15px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding:0 20px;
  position:relative;
  z-index:1;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  background:rgba(6,10,18,.72);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.92);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.42);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--text);
  white-space:nowrap;
}
.logo:hover{color:var(--text);}
.logo-mark{
  width:30px;height:30px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  box-shadow:var(--glow);
  display:grid;place-items:center;
  flex:0 0 auto;
}
.logo-mark span{
  width:12px;height:12px;
  border:2px solid #04121A;
  border-radius:50%;
  display:block;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-link{
  position:relative;
  padding:9px 14px;
  border-radius:10px;
  font-size:14.5px;
  color:var(--muted);
  font-weight:500;
  white-space:nowrap;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05);}
.nav-link.is-active{color:var(--primary);background:rgba(53,214,230,.10);}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:3px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
}
.header-cta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:9px 18px;
  border-radius:var(--radius-btn);
  font-size:14px;
  font-weight:600;
  color:#04121A;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  box-shadow:0 6px 20px rgba(53,214,230,.28);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
  white-space:nowrap;
}
.header-cta:hover{color:#04121A;transform:translateY(-1px);box-shadow:var(--glow);}
.header-cta:active{transform:translateY(0);}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--text);
  align-items:center;
  justify-content:center;
}
.nav-toggle i,
.nav-toggle i::before,
.nav-toggle i::after{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:currentColor;
  content:"";
  position:relative;
}
.nav-toggle i::before{position:absolute;top:-6px;}
.nav-toggle i::after{position:absolute;top:6px;}

.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(7,11,20,.97);
  padding:10px 20px 18px;
}
.drawer.is-open{display:block;}
.drawer a{
  display:block;
  padding:13px 4px;
  font-size:15px;
  color:var(--muted);
  border-bottom:1px solid var(--line);
}
.drawer a:last-child{border-bottom:0;}
.drawer a.is-active{color:var(--primary);}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  min-height:260px;
  height:clamp(240px,32vw,300px);
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero-img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.95);
}
.hero-veil{
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg,rgba(4,7,13,.72),rgba(4,7,13,.90) 62%,rgba(6,10,18,.98)),
    linear-gradient(90deg,rgba(6,10,18,.7),rgba(6,10,18,.35) 50%,rgba(6,10,18,.7));
}
.page-hero-inner{
  position:relative;
  z-index:2;
  max-width:840px;
  padding-top:24px;
  padding-bottom:24px;
}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--primary);
  background:rgba(53,214,230,.10);
  border:1px solid rgba(53,214,230,.30);
  margin-bottom:16px;
}
.hero-tag::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--secondary);
  box-shadow:0 0 10px var(--secondary);
}
.page-hero h1{
  font-size:clamp(26px,3.6vw,42px);
  line-height:1.22;
  font-weight:700;
  letter-spacing:-.02em;
}
.page-hero .hero-lead{
  margin-top:14px;
  font-size:15px;
  color:var(--muted);
  line-height:1.85;
  max-width:660px;
  margin-left:auto;
  margin-right:auto;
}

/* ---------- generic section ---------- */
.section{padding:64px 0;}
.section.tight{padding:48px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.eyebrow{
  display:inline-block;
  font-size:12.5px;
  letter-spacing:.12em;
  color:var(--secondary);
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.32;
  font-weight:700;
  letter-spacing:-.015em;
}
.section-head p{
  margin-top:12px;
  font-size:15px;
  color:var(--muted);
}
.section-head.center{max-width:700px;margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- info strip ---------- */
.info-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  margin-top:-42px;
  position:relative;
  z-index:5;
  box-shadow:var(--shadow-card);
}
.info-cell{
  background:var(--panel);
  padding:22px 20px;
  transition:background .2s var(--ease);
}
.info-cell:hover{background:var(--panel-2);}
.info-cell .num{
  font-family:ui-monospace,"SFMono-Regular",Inter,monospace;
  font-size:26px;
  font-weight:700;
  color:var(--primary);
  letter-spacing:-.02em;
  display:block;
  line-height:1.2;
}
.info-cell .num em{font-style:normal;font-size:14px;color:var(--muted);margin-left:3px;}
.info-cell .label{
  margin-top:6px;
  font-size:13.5px;
  color:var(--muted);
}

/* ---------- intro split ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.split-media{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  border:1px solid var(--line);
}
.split-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
}
.split-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,.05) 40%,rgba(6,10,18,.55));
}
.split-body h2{
  font-size:clamp(22px,2.4vw,30px);
  line-height:1.34;
  font-weight:700;
  letter-spacing:-.015em;
}
.split-body > p{
  margin-top:14px;
  color:var(--muted);
  font-size:15.5px;
}
.check-list{margin-top:22px;display:grid;gap:12px;}
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  color:var(--text);
}
.check-list li span.dot{
  flex:0 0 auto;
  width:20px;height:20px;
  margin-top:5px;
  border-radius:6px;
  background:rgba(63,224,160,.12);
  border:1px solid rgba(63,224,160,.35);
  display:grid;
  place-items:center;
  font-size:11px;
  color:var(--secondary);
  font-weight:700;
}
.check-list li b{font-weight:600;}
.check-list li i{
  display:block;
  font-style:normal;
  font-size:13.5px;
  color:var(--faint);
  margin-top:2px;
}

/* ---------- scenario tags ---------- */
.scene-wrap{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
}
.scene-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px 20px;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.scene-card:hover{
  transform:translateY(-2px);
  border-color:rgba(53,214,230,.45);
  box-shadow:var(--shadow-card);
}
.scene-card h3{
  font-size:17px;
  font-weight:600;
  line-height:1.45;
}
.scene-card p{
  margin-top:10px;
  font-size:14px;
  color:var(--muted);
  line-height:1.8;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:6px 13px;
  font-size:13px;
  border-radius:var(--radius-badge);
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  color:var(--muted);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.tag:hover{color:var(--primary);border-color:rgba(53,214,230,.45);}

/* ---------- flow bar ---------- */
.flow{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  counter-reset:flow;
}
.flow-item{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 20px 22px;
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.flow-item:hover{border-color:rgba(53,214,230,.4);transform:translateY(-2px);}
.flow-item::before{
  counter-increment:flow;
  content:"0" counter(flow);
  font-family:ui-monospace,Inter,monospace;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--accent);
  display:block;
  margin-bottom:10px;
}
.flow-item h3{font-size:16px;font-weight:600;line-height:1.5;}
.flow-item p{margin-top:8px;font-size:13.5px;color:var(--muted);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:320px 1fr;
  gap:48px;
  align-items:start;
}
.faq-aside{
  position:sticky;
  top:96px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 22px;
  box-shadow:var(--shadow-card);
}
.faq-aside h3{
  font-size:18px;
  font-weight:700;
  line-height:1.5;
}
.faq-aside p{
  margin-top:12px;
  font-size:14px;
  color:var(--muted);
}
.faq-aside .mini-meta{
  margin-top:20px;
  padding-top:18px;
  border-top:1px solid var(--line);
  display:grid;
  gap:12px;
}
.faq-aside .mini-meta div{
  display:flex;
  justify-content:space-between;
  gap:10px;
  font-size:13.5px;
  color:var(--faint);
}
.faq-aside .mini-meta div strong{
  color:var(--text);
  font-weight:600;
  font-family:ui-monospace,Inter,monospace;
}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-item.is-open{border-color:rgba(53,214,230,.45);background:var(--panel-2);}
.faq-q{
  width:100%;
  min-height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 22px;
  background:transparent;
  border:0;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  text-align:left;
  line-height:1.6;
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--primary);}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:20px;height:20px;
  transition:transform .2s var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--primary);
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s var(--ease);
}
.faq-a p{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}

/* ---------- CTA ---------- */
.cta-section{padding:72px 0 80px;}
.cta-panel{
  max-width:920px;
  margin:0 auto;
  background:linear-gradient(160deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:40px;
  box-shadow:var(--shadow-card);
}
.cta-panel h2{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:700;
  line-height:1.34;
  letter-spacing:-.015em;
}
.cta-panel > p{
  margin-top:12px;
  color:var(--muted);
  font-size:15px;
  max-width:640px;
}
.lead-form{
  margin-top:28px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
}
.field{display:flex;flex-direction:column;gap:7px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;color:var(--muted);}
.field input,
.field select,
.field textarea{
  width:100%;
  padding:12px 14px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line-strong);
  background:var(--panel);
  color:var(--text);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
  appearance:none;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.field input::placeholder,
.field textarea::placeholder{color:var(--faint);}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(53,214,230,.15);
}
.form-actions{
  grid-column:1 / -1;
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  margin-top:4px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease),color .18s var(--ease);
}
.btn-primary{
  color:#04121A;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  box-shadow:0 8px 24px rgba(53,214,230,.25);
}
.btn-primary:hover{color:#04121A;transform:translateY(-1px);box-shadow:var(--glow);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  color:var(--text);
  background:transparent;
  border-color:var(--line-strong);
}
.btn-ghost:hover{
  color:var(--primary);
  border-color:var(--primary);
  background:rgba(53,214,230,.08);
}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.form-note{font-size:13px;color:var(--faint);}
.form-alert{
  grid-column:1 / -1;
  display:none;
  font-size:14px;
  padding:12px 16px;
  border-radius:10px;
  border-left:3px solid var(--ok);
  background:rgba(63,224,160,.10);
  color:var(--text);
}
.form-alert.is-visible{display:block;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--footer-bg);
  border-top:1px solid var(--line);
  padding:56px 0 0;
  margin-top:8px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-brand .logo{font-size:17px;margin-bottom:14px;}
.footer-brand p{
  font-size:14px;
  color:var(--muted);
  line-height:1.85;
  max-width:320px;
}
.footer-quote{
  margin-top:16px;
  padding:12px 14px;
  border-left:2px solid var(--primary);
  background:rgba(53,214,230,.06);
  border-radius:0 10px 10px 0;
  font-size:13.5px;
  color:var(--muted);
}
.footer-col h3{
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col a,
.footer-col span{
  display:block;
  font-size:14px;
  color:var(--muted);
  margin-bottom:11px;
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--faint);
}
.footer-bottom a{color:var(--faint);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- mobile tab bar ---------- */
.mobile-tabs{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:80;
  background:rgba(6,10,18,.94);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabs a{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  height:60px;
  font-size:10px;
  color:var(--faint);
  transition:color .18s var(--ease);
}
.mobile-tabs a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.mobile-tabs a.is-active{color:var(--primary);}
.mobile-tabs a.is-active::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:26px;height:3px;
  border-radius:0 0 3px 3px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(53,214,230,.7);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .faq-layout{grid-template-columns:280px 1fr;gap:36px;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-cta{display:none;}
  body{padding-bottom:76px;}
  .mobile-tabs{display:grid;grid-template-columns:repeat(5,1fr);}
  .split{grid-template-columns:1fr;gap:32px;}
  .scene-wrap{grid-template-columns:repeat(2,1fr);}
  .flow{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .faq-aside{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .info-strip{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:767px){
  .section{padding:48px 0;}
  .cta-panel{padding:26px 20px;}
  .lead-form{grid-template-columns:1fr;}
  .page-hero{height:auto;min-height:230px;padding:34px 0;}
  .page-hero h1{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .info-strip{grid-template-columns:1fr;}
  .scene-wrap{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .info-strip{margin-top:-28px;}
  .info-cell{padding:18px 18px;}
  .faq-q{font-size:15px;padding:14px 18px;}
  .faq-a p{padding:0 18px 18px;}
  .info-cell .num{font-size:22px;}
  .mobile-tabs a{font-size:9.5px;}
}