/* roulang page: index */
:root{
  --bg-0:#060B14;
  --bg-1:#0A1524;
  --bg-2:#0E1E33;
  --brand:#19C0DC;
  --brand-600:#0E93B8;
  --brand-glow:rgba(25,192,220,.38);
  --indigo:#5B6CFF;
  --indigo-soft:rgba(91,108,255,.18);
  --amber:#FFB454;
  --text:#E8F0FA;
  --body:#C3CEE0;
  --muted:#8DA0BC;
  --dim:#5C6B82;
  --ok:#38D996;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(25,192,220,.45);
  --line-weak:rgba(255,255,255,.06);
  --r-card:18px;
  --r-btn:12px;
  --r-input:10px;
  --r-img:14px;
  --sh1:0 6px 18px rgba(3,10,22,.35);
  --sh2:0 18px 40px rgba(3,10,22,.55);
  --sh3:0 28px 64px rgba(3,10,22,.65);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background-color:var(--bg-0);
  overflow-x:hidden;
  background-image:
    radial-gradient(900px 520px at 6% -8%, rgba(25,192,220,.12), transparent 62%),
    radial-gradient(780px 500px at 102% 6%, rgba(91,108,255,.10), transparent 60%),
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--body);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand)}
h1,h2,h3,h4{color:var(--text);font-weight:700;margin:0}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
::selection{background:rgba(25,192,220,.32);color:#fff}
:focus-visible{outline:3px solid rgba(25,192,220,.45);outline-offset:2px;border-radius:6px}

.container,.container-lg,.container-xl{
  width:100%;
  max-width:1200px;
  margin-inline:auto;
  padding-inline:24px;
}
@media (min-width:1440px){.container,.container-lg,.container-xl{max-width:1320px}}

/* ============ 通用件 ============ */
.section{padding-block:96px}
.section-tight{padding-block:72px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:44px}
.section-title{font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.25;position:relative;padding-left:20px}
.section-title::before{content:"";position:absolute;left:0;top:.55em;width:40px;height:2px;background:linear-gradient(90deg,var(--brand),rgba(25,192,220,0));border-radius:2px;transform:translateX(-6px)}
.section-sub{color:var(--muted);font-size:15px;max-width:640px;margin-top:12px;line-height:1.75}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--brand);border:1px solid var(--line-strong);border-radius:999px;padding:4px 12px;background:rgba(25,192,220,.08)}
.eyebrow-indigo{color:#A7B0FF;border-color:rgba(91,108,255,.45);background:var(--indigo-soft)}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;padding:6px 11px;border-radius:999px;border:1px solid var(--line-strong);color:var(--brand);background:rgba(25,192,220,.07);white-space:nowrap}
.chip-indigo{border-color:rgba(91,108,255,.45);color:#A7B0FF;background:var(--indigo-soft)}
.chip-amber{border-color:rgba(255,180,84,.4);color:var(--amber);background:rgba(255,180,84,.08)}
.divider-glow{height:1px;border:0;background:linear-gradient(90deg,transparent,rgba(25,192,220,.55),transparent);margin:0}

.glass{
  position:relative;
  background:linear-gradient(160deg, rgba(255,255,255,.065), rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
  transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.glass::before{
  content:"";position:absolute;left:8%;right:8%;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,192,220,.7),transparent);
  pointer-events:none;
}
.glass:hover{border-color:rgba(25,192,220,.35);transform:translateY(-2px);box-shadow:var(--sh2)}
.glass-static:hover{transform:none}

/* ============ 按钮 ============ */
.btn{border-radius:var(--r-btn);font-weight:600;border-width:1px;transition:all .2s var(--ease);padding:12px 22px;line-height:1.2}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:linear-gradient(135deg,#19C0DC,#0E93B8);
  color:#04131A !important;font-weight:700;
  border:0;border-radius:var(--r-btn);
  padding:13px 24px;min-height:46px;
  box-shadow:0 0 0 1px rgba(25,192,220,.5),0 10px 28px rgba(25,192,220,.32);
}
.btn-glow:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(25,192,220,.55),0 14px 36px rgba(25,192,220,.42);color:#04131A}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(25,192,220,.5),0 6px 16px rgba(25,192,220,.3)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--text) !important;
  border:1px solid rgba(255,255,255,.22);border-radius:var(--r-btn);
  padding:13px 24px;min-height:46px;
}
.btn-ghost:hover{border-color:var(--brand);background:rgba(25,192,220,.08);color:var(--brand) !important;transform:translateY(-2px)}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand);font-weight:600}
.arrow-link span{transition:transform .2s var(--ease)}
.arrow-link:hover span{transform:translateX(4px)}
.text-link{color:var(--muted);font-size:14px;border-bottom:1px solid transparent}
.text-link:hover{color:var(--brand);border-bottom-color:var(--brand)}

/* ============ 顶栏 + 导航 ============ */
.site-header{position:sticky;top:0;z-index:1030}
.topbar{height:36px;background:rgba(6,11,20,.92);border-bottom:1px solid var(--line-weak)}
.topbar-inner{height:100%;display:flex;align-items:center;gap:18px;overflow:hidden}
.topbar-tag{font-size:12px;color:var(--muted);white-space:nowrap}
.topbar-tag b{color:var(--brand);font-weight:600}
.topbar-sep{width:1px;height:12px;background:var(--line);flex:0 0 auto}
.site-nav{
  min-height:72px;
  background:rgba(6,11,20,.62);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-weak);
  transition:min-height .24s var(--ease),background-color .24s var(--ease),border-color .24s var(--ease);
}
.site-header.scrolled .site-nav{
  min-height:60px;
  background:rgba(6,11,20,.86);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-bottom-color:var(--line-strong);
}
.navbar-brand{display:flex;align-items:center;gap:10px;padding:0;margin-right:32px}
.brand-mark{width:32px;height:32px;flex:0 0 auto;filter:drop-shadow(0 0 8px rgba(25,192,220,.45))}
.brand-text{font-size:18px;font-weight:700;color:var(--text);letter-spacing:0}
.brand-text span{color:var(--brand)}
.site-nav .navbar-nav{gap:4px}
.site-nav .nav-link{
  position:relative;color:var(--body);font-size:15px;padding:8px 12px;border-radius:8px;
}
.site-nav .nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),rgba(25,192,220,.2));
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.site-nav .nav-link:hover{color:var(--text)}
.site-nav .nav-link:hover::after{transform:scaleX(1)}
.site-nav .nav-link.active{color:var(--brand)}
.site-nav .nav-link.active::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-cta .btn-glow,.nav-cta .btn-ghost{min-height:44px;padding:11px 18px;font-size:14px}
.navbar-toggler{border:1px solid var(--line);border-radius:10px;padding:8px 10px;background:rgba(255,255,255,.03)}
.navbar-toggler:focus{box-shadow:none}
.navbar-toggler-icon{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%2319C0DC' stroke-width='2' stroke-linecap='round' d='M4 8h22M4 15h22M4 22h22'/%3E%3C/svg%3E");
}
.mobile-menu{border-top:1px solid var(--line-weak);padding-top:12px;margin-top:12px}
.mobile-menu .nav-link{display:flex;align-items:center;justify-content:space-between;min-height:52px;padding:0 4px;border-bottom:1px solid var(--line-weak);font-size:16px;color:var(--text)}
.mobile-menu .nav-link::after{display:none}
.mobile-menu .nav-link .chev{color:var(--dim)}
.mobile-cta{margin-top:16px}
.mobile-cta .btn-glow{width:100%}

/* ============ Hero ============ */
.hero{padding-block:72px 88px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.15;letter-spacing:-.02em;margin-bottom:16px}
.hero h1 .nb{white-space:nowrap;color:var(--brand)}
.hero-sub{font-size:17px;color:var(--muted);max-width:560px;line-height:1.8}
.hero-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:24px 0 28px;font-size:12px;color:var(--dim)}
.hero-tags i{width:1px;height:12px;background:var(--line);display:inline-block}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-visual{position:relative;padding:14px;border-radius:20px;box-shadow:var(--sh3)}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img)}
.hero-float{
  position:absolute;right:-8px;bottom:-14px;
  display:flex;align-items:baseline;gap:10px;
  padding:14px 18px;border-radius:14px;
  background:linear-gradient(150deg, rgba(10,21,36,.96), rgba(14,30,51,.92));
  border:1px solid var(--line-strong);
  box-shadow:var(--sh2);
}
.hero-float strong{font-family:var(--mono);font-size:22px;color:var(--amber);font-variant-numeric:tabular-nums;line-height:1}
.hero-float span{font-size:12px;color:var(--muted)}

/* ============ 指标看板 ============ */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.kpi{padding:26px 24px;border-radius:var(--r-card)}
.kpi-value{font-family:var(--mono);font-size:clamp(34px,3.4vw,42px);font-weight:700;color:var(--text);font-variant-numeric:tabular-nums;line-height:1;display:flex;align-items:baseline;gap:6px}
.kpi-value em{font-style:normal;font-size:14px;color:var(--muted);font-family:var(--font)}
.kpi-desc{font-size:13px;color:var(--muted);margin-top:12px;line-height:1.7;min-height:44px}
.kpi-bar{height:4px;border-radius:4px;background:rgba(255,255,255,.08);margin-top:16px;overflow:hidden}
.kpi-bar i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,var(--brand),var(--indigo))}
.kpi:nth-child(2) .kpi-value{color:var(--amber)}
.kpi-amber .kpi-bar i{background:linear-gradient(90deg,var(--amber),rgba(255,180,84,.35))}

/* ============ 服务矩阵 ============ */
.matrix-top{display:grid;grid-template-columns:5fr 7fr;gap:20px;margin-bottom:20px}
.matrix-main{padding:24px;display:flex;flex-direction:column;border-radius:var(--r-card);overflow:hidden}
.matrix-main img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);margin-bottom:22px}
.matrix-main h3{font-size:22px;margin-bottom:10px}
.matrix-main p{font-size:14px;color:var(--muted);margin-bottom:16px}
.matrix-list{margin-bottom:22px}
.matrix-list li{position:relative;padding-left:20px;font-size:14px;color:var(--body);line-height:1.9}
.matrix-list li::before{content:"";position:absolute;left:0;top:.78em;width:7px;height:7px;border-radius:2px;background:var(--brand);box-shadow:0 0 8px var(--brand-glow)}
.matrix-mini{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.mini-card{padding:22px;border-radius:var(--r-card);display:flex;flex-direction:column;gap:8px}
.mini-icon{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:rgba(25,192,220,.12);border:1px solid var(--line-strong);color:var(--brand)}
.mini-icon.indigo{background:var(--indigo-soft);border-color:rgba(91,108,255,.4);color:#A7B0FF}
.mini-card h4{font-size:16px;font-weight:600;color:var(--text)}
.mini-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.7}
.matrix-row{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.row-card{padding:20px 22px;border-radius:var(--r-card);display:flex;align-items:center;gap:16px}
.row-card .mini-icon{flex:0 0 auto}
.row-card h4{font-size:15px;font-weight:600;margin-bottom:4px}
.row-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.6}
.row-card .chev{margin-left:auto;color:var(--dim);flex:0 0 auto;transition:transform .2s var(--ease),color .2s var(--ease)}
.row-card:hover .chev{transform:translateX(4px);color:var(--brand)}

/* ============ 结果对比 ============ */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px;position:relative}
.compare-panel{padding:26px;border-radius:var(--r-card)}
.compare-panel h3{font-size:17px;margin-bottom:20px;display:flex;align-items:center;gap:10px}
.compare-item{margin-bottom:18px}
.compare-item:last-child{margin-bottom:0}
.compare-name{font-size:14px;color:var(--text);margin-bottom:8px;display:flex;justify-content:space-between;gap:10px}
.compare-name span{font-family:var(--mono);font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.bar{height:6px;border-radius:6px;background:rgba(255,255,255,.07);overflow:hidden;margin-bottom:6px}
.bar i{display:block;height:100%;border-radius:6px}
.bar-gray i{background:rgba(255,255,255,.22)}
.bar-brand i{background:linear-gradient(90deg,var(--brand),var(--indigo));box-shadow:0 0 12px rgba(25,192,220,.45)}
.compare-badge{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:64px;height:64px;border-radius:50%;display:grid;place-items:center;
  font-size:13px;color:var(--text);font-weight:600;
  background:linear-gradient(150deg, rgba(10,21,36,.98), rgba(14,30,51,.95));
  border:1px solid var(--line-strong);
  box-shadow:0 0 0 8px rgba(6,11,20,.85), 0 0 28px rgba(25,192,220,.28);
}
.compare-divider{display:none}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column}
.news-thumb{display:block;overflow:hidden;border-radius:var(--r-card) var(--r-card) 0 0}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.news-title{font-size:17px;line-height:1.5;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a{color:var(--text)}
.news-title a:hover{color:var(--brand)}
.news-desc{font-size:14px;color:var(--muted);line-height:1.7;margin:0 0 18px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line-weak)}
.news-foot time{font-size:13px;color:var(--dim);font-variant-numeric:tabular-nums}
.news-foot a{font-size:13px}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:32px;border-radius:var(--r-card);
}
.empty-state svg{color:var(--dim)}
.empty-state p{color:var(--muted);font-size:15px;margin:0}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:1fr;gap:12px;max-width:920px;margin-inline:auto}
.faq-item{border-radius:14px !important;border:1px solid var(--line) !important;background:linear-gradient(160deg, rgba(255,255,255,.055), rgba(255,255,255,.018)) !important;overflow:hidden}
.faq-item + .faq-item{margin-top:12px}
.faq-item .accordion-button{
  background:transparent !important;color:var(--text) !important;
  font-size:16px;font-weight:600;padding:18px 22px;box-shadow:none !important;
  border-radius:14px !important;position:relative;
}
.faq-item .accordion-button::after{display:none}
.faq-item .accordion-button .plus{
  margin-left:auto;flex:0 0 auto;width:20px;height:20px;position:relative;transition:transform .24s var(--ease);
}
.faq-item .accordion-button .plus::before,
.faq-item .accordion-button .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
}
.faq-item .accordion-button .plus::before{width:14px;height:2px;transform:translate(-50%,-50%)}
.faq-item .accordion-button .plus::after{width:2px;height:14px;transform:translate(-50%,-50%)}
.faq-item .accordion-button:not(.collapsed) .plus{transform:rotate(180deg)}
.faq-item .accordion-button:not(.collapsed){color:var(--brand) !important}
.faq-item .accordion-body{
  padding:4px 22px 22px 25px;font-size:15px;line-height:1.85;color:var(--muted);
  border-left:3px solid var(--brand);margin-left:22px;
}
.faq-item .accordion-collapse{border-top:0}

/* ============ 表单 ============ */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start}
.contact-points{margin:22px 0 26px}
.contact-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--body);margin-bottom:12px}
.contact-points svg{flex:0 0 auto;margin-top:6px;color:var(--brand)}
.contact-line{display:flex;flex-wrap:wrap;gap:18px;font-size:14px;color:var(--muted);padding-top:18px;border-top:1px solid var(--line-weak)}
.contact-line b{color:var(--text);font-weight:600}
.form-card{padding:28px;border-radius:var(--r-card);box-shadow:var(--sh3)}
.form-label{font-size:13px;color:var(--muted);margin-bottom:8px}
.form-control,.form-select{
  background:rgba(255,255,255,.04) !important;
  border:1px solid rgba(255,255,255,.12) !important;
  border-radius:var(--r-input) !important;
  color:var(--text) !important;
  padding:14px 16px;
  font-size:15px;
  box-shadow:none !important;
}
.form-control::placeholder{color:var(--dim)}
.form-control:focus,.form-select:focus{border-color:var(--brand) !important;box-shadow:0 0 0 3px rgba(25,192,220,.18) !important}
.form-select option{background:#0A1524;color:var(--text)}
.form-check-input{background-color:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.2);width:18px;height:18px;margin-top:3px}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand)}
.form-check-label{font-size:13px;color:var(--muted)}
.form-hint{font-size:13px;color:var(--err);margin-top:6px;display:none}
.form-actions{display:flex;justify-content:flex-end;margin-top:8px}

/* ============ 页脚 ============ */
.site-footer{background:#050A12;border-top:1px solid var(--line-strong);margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-block:64px 48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-about{font-size:14px;color:var(--muted);line-height:1.85;margin-bottom:20px;max-width:320px}
.footer-social{display:flex;gap:10px}
.footer-social a{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--muted);background:rgba(255,255,255,.03);
}
.footer-social a:hover{color:var(--brand);border-color:var(--line-strong);background:rgba(25,192,220,.08)}
.footer-title{font-size:15px;color:var(--text);font-weight:600;margin-bottom:18px}
.footer-links li{margin-bottom:11px}
.footer-links a{font-size:14px;color:var(--muted);display:inline-flex;align-items:center;gap:6px;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-links a:hover{color:var(--brand);transform:translateX(2px)}
.footer-contact li{font-size:14px;color:var(--muted);margin-bottom:12px;line-height:1.7}
.footer-contact b{color:var(--text);font-weight:600;display:block;font-size:13px;margin-bottom:2px}
.footer-bottom{border-top:1px solid var(--line-weak);padding-block:20px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
.footer-bottom p{margin:0;font-size:13px;color:var(--dim)}
.footer-bottom .tech{display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--dim)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .container,.container-lg,.container-xl{padding-inline:20px}
  .hero-grid{gap:32px}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:32px}
}
@media (max-width:991.98px){
  .section{padding-block:72px}
  .hero{padding-block:48px 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:560px}
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
  .matrix-top{grid-template-columns:1fr}
  .matrix-mini{grid-template-columns:1fr 1fr}
  .matrix-row{grid-template-columns:1fr;gap:16px}
  .compare-wrap{grid-template-columns:1fr;gap:20px}
  .compare-badge{display:none}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding-block:48px 32px}
  .site-nav .navbar-collapse{background:rgba(6,11,20,.98);border:1px solid var(--line);border-radius:16px;padding:16px;margin-top:12px}
  .nav-cta{margin-top:16px}
  .nav-cta .btn-glow,.nav-cta .btn-ghost{flex:1 1 auto}
}
@media (max-width:767.98px){
  .section{padding-block:56px}
  .section-head{margin-bottom:32px;flex-direction:column;align-items:flex-start;gap:12px}
  .hero h1{font-size:clamp(28px,7.4vw,36px)}
  .hero-sub{font-size:15.5px}
  .hero-tags{gap:8px}
  .hero-float{right:8px;bottom:-12px;padding:12px 14px}
  .kpi{padding:20px}
  .kpi-desc{min-height:0}
  .news-grid{grid-template-columns:1fr}
  .matrix-mini{grid-template-columns:1fr}
  .form-card{padding:22px}
  .form-actions{justify-content:stretch}
  .form-actions .btn-glow{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:575.98px){
  .container,.container-lg,.container-xl{padding-inline:16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%}
  .kpi-grid{grid-template-columns:1fr}
  .row-card{padding:18px}
  .compare-panel{padding:20px}
  .news-body{padding:18px}
  .faq-item .accordion-button{font-size:15px;padding:16px 18px}
  .faq-item .accordion-body{margin-left:16px;padding:4px 18px 18px 19px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg-0:#060B14;
  --bg-1:#0A1524;
  --bg-2:#0E1E33;
  --brand:#19C0DC;
  --brand-600:#0E93B8;
  --brand-glow:rgba(25,192,220,.38);
  --indigo:#5B6CFF;
  --indigo-soft:rgba(91,108,255,.18);
  --amber:#FFB454;
  --text-0:#E8F0FA;
  --text-1:#C3CEE0;
  --text-2:#8DA0BC;
  --text-3:#5C6B82;
  --ok:#38D996;
  --warn:#FFB020;
  --err:#FF5C7A;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(25,192,220,.45);
  --line-weak:rgba(255,255,255,.06);
  --r-card:18px;
  --r-btn:12px;
  --r-input:10px;
  --r-img:14px;
  --sh-1:0 6px 18px rgba(3,10,22,.35);
  --sh-2:0 18px 40px rgba(3,10,22,.55);
  --sh-3:0 28px 64px rgba(3,10,22,.65);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 620px at 8% -6%,rgba(25,192,220,.12),transparent 62%),
    radial-gradient(880px 640px at 102% 108%,rgba(91,108,255,.10),transparent 60%),
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;
  background-attachment:fixed,fixed,scroll,scroll;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--text-1);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand)}
h1,h2,h3,h4,h5{margin:0;color:var(--text-0);font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
::selection{background:rgba(25,192,220,.28);color:#fff}
:focus-visible{outline:3px solid rgba(25,192,220,.45);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1320px}}

/* ---------- 顶部提示条 ---------- */
.topbar{
  height:36px;
  background:rgba(5,10,18,.72);
  border-bottom:1px solid var(--line-weak);
  display:flex;
  align-items:center;
  font-size:12px;
  color:var(--text-2);
}
.topbar-inner{display:flex;align-items:center;gap:14px;overflow:hidden;white-space:nowrap}
.topbar-tag b{color:var(--brand);font-weight:600}
.topbar-sep{width:1px;height:12px;background:var(--line);display:inline-block}
@media (max-width:767px){.topbar-sep:nth-of-type(n+2),.topbar-tag:nth-of-type(n+3){display:none}}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030}
.site-nav{
  min-height:72px;
  padding:0;
  background:rgba(6,11,20,.72);
  border-bottom:1px solid var(--line-weak);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:background .24s var(--ease),min-height .24s var(--ease),border-color .24s var(--ease);
}
.site-nav.is-scrolled{
  min-height:60px;
  background:rgba(6,11,20,.86);
  border-bottom-color:var(--line-strong);
  box-shadow:0 10px 30px rgba(3,10,22,.5);
}
.site-nav .container{display:flex;align-items:center;gap:18px}
.navbar-brand{
  display:flex;align-items:center;gap:10px;
  padding:0;margin-right:8px;
  color:var(--text-0)!important;
}
.brand-mark{width:34px;height:34px;flex:0 0 34px}
.brand-text{font-size:18px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand-text span{color:var(--brand)}
.site-nav .navbar-nav{display:flex;align-items:center;gap:4px}
.site-nav .nav-link{
  position:relative;
  padding:9px 12px;
  font-size:15px;
  color:var(--text-1);
  border-radius:8px;
}
.site-nav .nav-link::after{
  content:"";
  position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--indigo));
  border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.site-nav .nav-link:hover{color:var(--text-0)}
.site-nav .nav-link:hover::after{transform:scaleX(1)}
.site-nav .nav-link.active{color:var(--brand)}
.site-nav .nav-link.active::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:10px;margin-left:auto}
.navbar-toggler{
  margin-left:auto;
  width:46px;height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:rgba(255,255,255,.03);
}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(25,192,220,.18)}
.navbar-toggler-icon{
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%23E8F0FA' stroke-width='2' stroke-linecap='round' d='M6 9h18M6 15h18M6 21h18'/%3E%3C/svg%3E");
  background-size:22px 22px;
}
@media (max-width:991px){
  .site-nav .navbar-collapse{
    margin-top:10px;
    padding:14px;
    border:1px solid var(--line);
    border-radius:16px;
    background:rgba(8,16,28,.96);
    box-shadow:var(--sh-2);
  }
  .site-nav .navbar-nav{flex-direction:column;align-items:stretch;gap:2px}
  .site-nav .nav-link{line-height:52px;padding:0 14px;font-size:15px}
  .site-nav .nav-link::after{display:none}
  .site-nav .nav-link.active{background:rgba(25,192,220,.10)}
  .nav-cta .btn-glow{width:100%;justify-content:center;min-height:48px}
}

/* ---------- 按钮 ---------- */
.btn-glow,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),filter .2s var(--ease);
}
.btn-glow{
  background:linear-gradient(135deg,#19C0DC,#0E93B8);
  color:#04131A!important;
  box-shadow:0 0 0 1px rgba(25,192,220,.5),0 10px 28px rgba(25,192,220,.32);
}
.btn-glow:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(25,192,220,.55),0 16px 36px rgba(25,192,220,.38)}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(25,192,220,.5),0 6px 16px rgba(25,192,220,.25)}
.btn-ghost{
  background:transparent;
  color:var(--text-0);
  border-color:rgba(255,255,255,.22);
}
.btn-ghost:hover{border-color:var(--brand);background:rgba(25,192,220,.08);color:var(--text-0);transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
@media (max-width:575px){.btn-glow,.btn-ghost{width:100%}}

/* ---------- 通用小件 ---------- */
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;
  border:1px solid rgba(25,192,220,.45);
  color:var(--brand);
  background:rgba(25,192,220,.08);
  letter-spacing:.02em;
}
.badge-pill.violet{border-color:rgba(91,108,255,.45);color:#9AA6FF;background:var(--indigo-soft)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-title{position:relative;font-size:clamp(22px,3vw,32px);font-weight:700;padding-left:18px}
.section-title::before{
  content:"";position:absolute;left:0;top:.42em;width:40px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),transparent);
  transform:translateX(-22px);
}
.glass{
  position:relative;
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.glass::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,192,220,.6),transparent);
}
.glass:hover{border-color:rgba(25,192,220,.35)}

/* ---------- 页面头部 ---------- */
.article-hero{padding:52px 0 30px}
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-3);
  margin-bottom:22px;
}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:rgba(255,255,255,.18)}
.crumb .now{color:var(--text-2);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{
  font-size:clamp(28px,3.9vw,46px);
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.02em;
  margin:16px 0 0;
  max-width:900px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:12px;
  margin-top:20px;
  font-size:13px;
  color:var(--text-2);
}
.article-meta .dot{width:1px;height:12px;background:var(--line);display:inline-block}
.article-meta time{font-family:var(--font-num);letter-spacing:.04em}
.head-divider{
  height:1px;margin-top:28px;
  background:linear-gradient(90deg,rgba(25,192,220,.55),rgba(255,255,255,.06) 45%,transparent);
}

/* ---------- 两栏主体 ---------- */
.article-body{padding:44px 0 88px}
.article-layout{gap:0}
@media (min-width:992px){.article-layout{--bs-gutter-x:40px}}

/* ---------- 正文排版 ---------- */
.prose{
  max-width:760px;
  font-size:17px;
  line-height:1.9;
  color:var(--text-1);
}
.prose>*+*{margin-top:1.25em}
.prose p{margin:0;color:var(--text-1)}
.prose h2{
  position:relative;
  font-size:clamp(22px,2.5vw,28px);
  font-weight:700;
  line-height:1.4;
  margin-top:2.5em;
  padding-left:16px;
  scroll-margin-top:96px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-600));
  box-shadow:0 0 14px var(--brand-glow);
}
.prose h3{
  font-size:20px;
  font-weight:700;
  line-height:1.5;
  margin-top:2em;
  scroll-margin-top:96px;
}
.prose h4{font-size:17px;font-weight:600;margin-top:1.6em;color:var(--text-0)}
.prose strong{color:var(--text-0);font-weight:600}
.prose a{color:var(--brand);border-bottom:1px solid rgba(25,192,220,.35)}
.prose a:hover{border-bottom-color:var(--brand)}
.prose blockquote{
  margin:1.6em 0;
  padding:16px 20px;
  border-left:3px solid var(--brand);
  border-radius:0 12px 12px 0;
  background:rgba(25,192,220,.06);
  color:var(--text-1);
}
.prose blockquote p{color:var(--text-1)}
.prose ul,.prose ol{padding-left:4px;margin:1.2em 0}
.prose ul>li{position:relative;padding-left:22px;margin:.55em 0}
.prose ul>li::before{
  content:"";position:absolute;left:2px;top:.68em;width:7px;height:7px;
  background:var(--brand);border-radius:2px;
  box-shadow:0 0 10px var(--brand-glow);
}
.prose ol{counter-reset:pl}
.prose ol>li{position:relative;padding-left:28px;margin:.55em 0;counter-increment:pl}
.prose ol>li::before{
  content:counter(pl);
  position:absolute;left:0;top:.34em;
  width:20px;height:20px;line-height:20px;text-align:center;
  font-size:12px;font-family:var(--font-num);
  color:var(--brand);
  border:1px solid rgba(25,192,220,.4);
  border-radius:6px;
  background:rgba(25,192,220,.08);
}
.prose img{
  width:100%;height:auto;
  border-radius:12px;
  box-shadow:var(--sh-1);
  margin:1.6em auto .6em;
}
.prose figure{margin:1.6em 0}
.prose figcaption{
  text-align:center;font-size:13px;color:var(--text-3);margin-top:8px;
}
.prose hr{border:0;height:1px;background:var(--line);margin:2.4em 0}
.prose code{
  font-family:var(--font-num);
  font-size:14px;
  padding:2px 7px;
  border-radius:6px;
  background:rgba(25,192,220,.10);
  color:#8FE7F7;
}
.prose pre{
  margin:1.6em 0;
  padding:18px 20px;
  background:#050B14;
  border:1px solid var(--line);
  border-radius:12px;
  overflow-x:auto;
  box-shadow:var(--sh-1);
}
.prose pre code{background:none;padding:0;color:#B9C9DE;font-size:13.5px;line-height:1.75}
.table-wrap{
  margin:1.6em 0;
  border:1px solid var(--line);
  border-radius:14px;
  overflow-x:auto;
  background:rgba(255,255,255,.02);
}
.prose table{width:100%;min-width:520px;border-collapse:collapse;font-size:15px}
.prose thead th{
  background:rgba(10,21,36,.96);
  color:var(--text-0);
  font-weight:600;
  text-align:left;
  padding:14px 18px;
  white-space:nowrap;
  border-bottom:1px solid var(--line);
}
.prose tbody td{
  padding:13px 18px;
  color:var(--text-1);
  border-bottom:1px solid var(--line-weak);
}
.prose tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
.prose tbody tr:last-child td{border-bottom:0}

/* 空态 */
.empty-state{
  min-height:240px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:16px;text-align:center;
  padding:40px 24px;
  border:1px dashed rgba(255,255,255,.14);
  border-radius:var(--r-card);
  background:rgba(255,255,255,.02);
}
.empty-state svg{width:48px;height:48px;color:var(--text-3)}
.empty-state p{color:var(--text-2);font-size:15px}

/* ---------- 侧栏 ---------- */
.side-stack{display:flex;flex-direction:column;gap:20px}
@media (min-width:992px){
  .side-stack{position:sticky;top:96px}
}
.side-card{padding:22px 22px 24px;border-radius:16px}
.side-title{
  display:flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;color:var(--text-0);
  margin-bottom:14px;
}
.side-title::before{
  content:"";width:18px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--indigo));
}
.toc-box{border:0;margin:0}
.toc-box summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;
  font-size:15px;font-weight:700;color:var(--text-0);
  padding:0 0 12px;
  border-bottom:1px solid var(--line-weak);
}
.toc-box summary::-webkit-details-marker{display:none}
.toc-box summary::after{
  content:"+";
  font-family:var(--font-num);
  color:var(--brand);
  font-size:17px;
  transition:transform .24s var(--ease);
}
.toc-box[open] summary::after{content:"−"}
.toc-list{margin-top:12px;display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;
  padding:7px 10px;
  font-size:13.5px;
  color:var(--text-2);
  border-left:2px solid transparent;
  border-radius:0 8px 8px 0;
  line-height:1.6;
}
.toc-list a:hover{color:var(--text-0);background:rgba(255,255,255,.04)}
.toc-list a.lv3{padding-left:22px;font-size:13px;color:var(--text-3)}
.toc-list a.current{
  color:var(--brand);
  border-left-color:var(--brand);
  background:rgba(25,192,220,.08);
}
.mini-post{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;
  border-bottom:1px solid var(--line-weak);
}
.mini-post:last-child{border-bottom:0;padding-bottom:0}
.mini-thumb{
  flex:0 0 64px;width:64px;height:46px;
  border-radius:10px;overflow:hidden;
  border:1px solid var(--line);
}
.mini-thumb img{width:100%;height:100%;object-fit:cover}
.mini-post h4{
  font-size:14px;font-weight:600;line-height:1.55;
  color:var(--text-0);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-post:hover h4{color:var(--brand)}
.mini-post span{display:block;margin-top:6px;font-size:12px;color:var(--text-3);font-family:var(--font-num)}
.side-actions{display:flex;flex-direction:column;gap:10px}

/* ---------- 文末区 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:44px}
.tag{
  padding:6px 12px;font-size:12.5px;border-radius:999px;
  border:1px solid var(--line);color:var(--text-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.tag:hover{border-color:var(--line-strong);color:var(--brand);background:rgba(25,192,220,.07)}
.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:36px}
@media (max-width:767px){.pn-grid{grid-template-columns:1fr}}
.pn-card{padding:20px 22px;border-radius:16px;display:block}
.pn-card .pn-label{font-size:12px;color:var(--text-3);letter-spacing:.06em}
.pn-card h4{font-size:15.5px;font-weight:600;line-height:1.6;margin-top:8px;color:var(--text-0)}
.pn-card:hover h4{color:var(--brand)}
.pn-card.next{text-align:right}

.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:22px}
@media (max-width:991px){.rel-grid{grid-template-columns:1fr 1fr}}
@media (max-width:575px){.rel-grid{grid-template-columns:1fr}}
.post-card{display:flex;flex-direction:column;border-radius:16px;overflow:hidden}
.post-card:hover{transform:translateY(-3px);border-color:rgba(25,192,220,.35);box-shadow:var(--sh-2)}
.post-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-body h4{
  font-size:16.5px;font-weight:600;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card:hover .post-body h4{color:var(--brand)}
.post-body p{
  font-size:13.5px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);
}
.post-foot time{font-family:var(--font-num);letter-spacing:.04em}
.post-foot .go{color:var(--brand);font-weight:600}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:40px;
  background:#050A12;
  border-top:1px solid var(--line-strong);
  padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-about{font-size:13.5px;line-height:1.85;color:var(--text-2);max-width:340px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  width:40px;height:40px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.footer-social a:hover{border-color:var(--line-strong);color:var(--brand);transform:translateY(-2px)}
.footer-title{font-size:14px;font-weight:700;color:var(--text-0);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-links a:hover{color:var(--brand);transform:translateX(2px)}
.footer-contact li{font-size:14px;color:var(--text-2);margin-bottom:11px;display:flex;gap:8px}
.footer-contact li b{color:var(--text-0);font-weight:600}
.footer-bottom{
  margin-top:52px;
  padding:20px 0;
  border-top:1px solid var(--line-weak);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--brand)}

@media (max-width:767px){
  .container{padding:0 16px}
  .article-hero{padding:34px 0 22px}
  .article-body{padding:30px 0 60px}
  .prose{font-size:16.5px}
  .side-card{padding:20px}
  .site-footer{padding-top:48px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}
.reveal{opacity:0;transform:translateY(12px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .5s var(--ease),transform .5s var(--ease)}

/* roulang page: category1 */
:root{
  --bg-0:#060B14;
  --bg-1:#0A1524;
  --bg-2:#0E1E33;
  --brand:#19C0DC;
  --brand-600:#0E93B8;
  --brand-glow:rgba(25,192,220,.38);
  --indigo:#5B6CFF;
  --indigo-soft:rgba(91,108,255,.18);
  --amber:#FFB454;
  --text-1:#E8F0FA;
  --text-2:#C3CEE0;
  --text-3:#8DA0BC;
  --text-4:#5C6B82;
  --ok:#38D996;
  --warn:#FFB020;
  --err:#FF5C7A;
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.06);
  --line-brand:rgba(25,192,220,.45);
  --r-card:18px;
  --r-btn:12px;
  --r-input:10px;
  --r-img:14px;
  --sh-1:0 6px 18px rgba(3,10,22,.35);
  --sh-2:0 18px 40px rgba(3,10,22,.55);
  --sh-3:0 28px 64px rgba(3,10,22,.65);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:72px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg-0);
  background-image:
    radial-gradient(760px 520px at 8% -6%, rgba(25,192,220,.12), transparent 62%),
    radial-gradient(720px 560px at 100% 8%, rgba(91,108,255,.10), transparent 60%),
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;
  background-attachment:fixed;
  color:var(--text-2);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--text-2);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand);}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;line-height:1.25;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(25,192,220,.45);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1320px;}}

/* ---------- 顶部信息条 ---------- */
.site-header{position:sticky;top:0;z-index:1030;}
.topbar{
  background:linear-gradient(90deg, rgba(25,192,220,.10), rgba(91,108,255,.08));
  border-bottom:1px solid var(--line-soft);
  font-size:12.5px;
}
.topbar-inner{display:flex;align-items:center;gap:14px;height:36px;overflow-x:auto;white-space:nowrap;scrollbar-width:none;}
.topbar-inner::-webkit-scrollbar{display:none;}
.topbar-tag{color:var(--text-3);font-size:12.5px;}
.topbar-tag b{color:var(--brand);font-weight:600;}
.topbar-sep{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.18);flex:0 0 auto;}

/* ---------- 导航 ---------- */
.site-nav{
  background:rgba(6,11,20,.72);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line-soft);
  min-height:var(--nav-h);
  padding:0;
  transition:background .24s var(--ease), min-height .24s var(--ease), border-color .24s var(--ease);
}
.site-nav.is-scrolled{
  background:rgba(6,11,20,.86);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  min-height:60px;
  border-bottom:1px solid rgba(25,192,220,.35);
  box-shadow:0 8px 26px rgba(3,10,22,.5);
}
.site-nav .container{display:flex;align-items:center;gap:18px;min-height:inherit;}
.navbar-brand{display:flex;align-items:center;gap:10px;padding:0;margin:0;}
.brand-mark{width:34px;height:34px;flex:0 0 auto;}
.brand-text{font-size:18px;font-weight:700;color:var(--text-1);letter-spacing:-.01em;}
.brand-text span{color:var(--brand);}
.navbar-toggler{
  border:1px solid var(--line);
  border-radius:10px;
  padding:8px 10px;
  background:rgba(255,255,255,.04);
  margin-left:auto;
}
.navbar-toggler:focus{box-shadow:none;}
.navbar-toggler-icon{
  width:22px;height:22px;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23E8F0FA' stroke-width='1.8' stroke-linecap='round'%3E%3Cpath d='M4 7h16M4 12h16M4 17h16'/%3E%3C/svg%3E");
  background-size:22px;
}
.navbar-collapse{flex-grow:1;}
.navbar-nav{display:flex;align-items:center;gap:6px;}
.navbar-nav .nav-link{
  position:relative;
  color:var(--text-2);
  font-size:15px;
  padding:10px 12px;
  border-radius:10px;
}
.navbar-nav .nav-link::after{
  content:"";
  position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--indigo));
  transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.navbar-nav .nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.04);}
.navbar-nav .nav-link:hover::after{transform:scaleX(1);}
.navbar-nav .nav-link.active{color:var(--brand);font-weight:600;}
.navbar-nav .nav-link.active::after{transform:scaleX(1);}
.nav-cta{display:flex;align-items:center;gap:10px;}

.btn-glow{
  display:inline-flex;align-items:center;gap:8px;
  height:46px;padding:0 20px;
  border:0;border-radius:var(--r-btn);
  background:linear-gradient(135deg,#19C0DC,#0E93B8);
  color:#04131A;font-size:15px;font-weight:700;
  box-shadow:0 0 0 1px rgba(25,192,220,.5),0 10px 28px rgba(25,192,220,.32);
  transition:transform .2s var(--ease), filter .2s var(--ease), box-shadow .2s var(--ease);
  cursor:pointer;
}
.btn-glow:hover{color:#04131A;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(25,192,220,.6),0 16px 36px rgba(25,192,220,.42);}
.btn-glow:active{transform:translateY(0);}
.btn-outline-soft{
  display:inline-flex;align-items:center;gap:8px;
  height:46px;padding:0 18px;
  border:1px solid rgba(255,255,255,.22);border-radius:var(--r-btn);
  background:transparent;color:var(--text-1);font-size:15px;font-weight:600;
  transition:border-color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease);
}
.btn-outline-soft:hover{color:var(--brand);border-color:var(--brand);background:rgba(25,192,220,.08);transform:translateY(-2px);}

@media (max-width:991.98px){
  .navbar-collapse{
    background:rgba(8,17,30,.96);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    border:1px solid var(--line);
    border-radius:16px;
    margin-top:12px;padding:12px;
    box-shadow:var(--sh-2);
  }
  .navbar-nav{align-items:stretch;gap:2px;}
  .navbar-nav .nav-link{font-size:16px;padding:14px 12px;border-bottom:1px solid var(--line-soft);border-radius:8px;}
  .navbar-nav .nav-link::after{display:none;}
  .navbar-nav .nav-link.active{background:rgba(25,192,220,.10);}
  .nav-cta{flex-direction:column;align-items:stretch;margin-top:12px;padding-top:12px;border-top:1px solid var(--line-soft);}
  .nav-cta .btn-glow,.nav-cta .btn-outline-soft{width:100%;justify-content:center;height:50px;}
}

/* ---------- 页面头部 ---------- */
.page-hero{position:relative;padding:64px 0 56px;overflow:hidden;isolation:isolate;}
.page-hero-bg{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;object-position:center;
  z-index:-2;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg, rgba(6,11,20,.82) 0%, rgba(6,11,20,.90) 45%, rgba(6,11,20,.98) 100%),
             radial-gradient(620px 380px at 82% 12%, rgba(25,192,220,.16), transparent 65%);
}
.hero-card{
  position:relative;
  max-width:820px;
  padding:28px 30px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(255,255,255,.065), rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-3);
}
.hero-card::before{
  content:"";position:absolute;top:0;left:14%;right:14%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,192,220,.85),transparent);
}
.breadcrumb-cn{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:16px;}
.breadcrumb-cn a{color:var(--text-3);}
.breadcrumb-cn a:hover{color:var(--brand);}
.breadcrumb-cn .slash{color:var(--text-4);}
.breadcrumb-cn .current{color:var(--text-2);}
.hero-card h1{
  font-size:clamp(28px,4vw,46px);
  font-weight:800;line-height:1.15;letter-spacing:-.02em;
}
.hero-card h1 em{font-style:normal;color:var(--brand);}
.hero-lead{margin-top:16px;font-size:16.5px;color:var(--text-2);max-width:640px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag-pill{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(255,255,255,.16);
  font-size:12.5px;color:var(--text-3);
}
.tag-pill.is-brand{border-color:rgba(25,192,220,.45);color:var(--brand);}
.tag-pill.is-indigo{border-color:rgba(91,108,255,.45);color:#A9B2FF;}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;}
.section.is-alt{background:linear-gradient(180deg, rgba(10,21,36,.72), rgba(6,11,20,0));}
.section-head{max-width:760px;margin-bottom:48px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;color:var(--brand);font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:40px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),transparent);}
.section-head h2{font-size:clamp(24px,3vw,34px);font-weight:700;}
.section-head p{margin-top:14px;color:var(--text-3);font-size:16px;}

/* ---------- 图文交替 ---------- */
.media-stack{display:flex;flex-direction:column;gap:72px;}
.media-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.media-row.is-flip .media-figure{order:2;}
.media-figure{
  position:relative;
  border-radius:18px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
  aspect-ratio:16/11;
}
.media-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.media-figure:hover img{transform:scale(1.04);}
.media-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(6,11,20,.05), rgba(6,11,20,.42));
}
.media-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:12px;
  border:1px solid rgba(25,192,220,.45);
  background:rgba(25,192,220,.10);
  color:var(--brand);font-size:13px;font-weight:700;
  font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.media-body h3{font-size:20px;font-weight:700;margin-bottom:14px;}
.media-body p{color:var(--text-2);font-size:15.5px;margin-bottom:14px;}
.check-list{display:flex;flex-direction:column;gap:10px;margin-top:20px;}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--text-3);}
.check-list svg{flex:0 0 auto;margin-top:5px;}

/* ---------- 数据条 ---------- */
.stat-bar{
  display:grid;grid-template-columns:repeat(3,1fr);
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(255,255,255,.055), rgba(255,255,255,.018));
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
  overflow:hidden;
}
.stat-item{padding:28px 26px;position:relative;}
.stat-item + .stat-item::before{
  content:"";position:absolute;left:0;top:22%;bottom:22%;width:1px;
  background:linear-gradient(180deg,transparent,var(--line),transparent);
}
.stat-num{
  display:flex;align-items:baseline;gap:6px;
  font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  font-variant-numeric:tabular-nums;
  font-size:36px;font-weight:700;color:var(--text-1);line-height:1;
}
.stat-num span{font-size:13px;color:var(--text-3);font-family:inherit;}
.stat-item p{margin-top:12px;font-size:13.5px;color:var(--text-3);}
.stat-item i{display:block;margin-top:16px;height:4px;border-radius:999px;background:linear-gradient(90deg,var(--brand),rgba(25,192,220,.15));}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.accordion-item{
  border:1px solid var(--line);
  border-radius:14px;
  background:linear-gradient(160deg, rgba(255,255,255,.055), rgba(255,255,255,.018));
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
  overflow:hidden;
  transition:border-color .2s var(--ease), transform .2s var(--ease);
}
.accordion-item:hover{border-color:rgba(25,192,220,.35);transform:translateY(-2px);}
.accordion-button{
  position:relative;
  background:transparent;
  color:var(--text-1);
  font-size:16px;font-weight:600;
  padding:20px 54px 20px 22px;
  box-shadow:none;
  border:0;
  width:100%;text-align:left;
  transition:background .2s var(--ease);
}
.accordion-button:not(.collapsed){color:var(--brand);background:rgba(25,192,220,.06);}
.accordion-button:focus{box-shadow:none;border:0;}
.accordion-button::after{
  content:"";
  position:absolute;right:20px;top:50%;
  width:18px;height:18px;transform:translateY(-50%);
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none' stroke='%2319C0DC' stroke-width='1.8' stroke-linecap='round'%3E%3Cpath d='M4 10h12M10 4v12'/%3E%3C/svg%3E");
  background-size:18px;background-repeat:no-repeat;
  transition:transform .24s var(--ease);
}
.accordion-button:not(.collapsed)::after{
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none' stroke='%2319C0DC' stroke-width='1.8' stroke-linecap='round'%3E%3Cpath d='M4 10h12'/%3E%3C/svg%3E");
  transform:translateY(-50%) rotate(180deg);
}
.accordion-body{
  position:relative;
  padding:4px 24px 22px 25px;
  color:var(--text-3);font-size:15px;line-height:1.8;
}
.accordion-body::before{
  content:"";position:absolute;left:12px;top:2px;bottom:22px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),rgba(25,192,220,.1));
}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;
  border-radius:22px;
  border:1px solid rgba(25,192,220,.30);
  background:
    radial-gradient(560px 260px at 88% 0%, rgba(25,192,220,.18), transparent 62%),
    linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  padding:38px 36px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  box-shadow:var(--sh-2);
}
.cta-band h2{font-size:clamp(21px,2.4vw,28px);}
.cta-band p{margin-top:10px;color:var(--text-3);font-size:15px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:40px;
  background:#050A12;
  border-top:1px solid rgba(25,192,220,.35);
  box-shadow:0 -14px 40px rgba(3,10,22,.5);
  padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-about{font-size:14px;color:var(--text-3);max-width:340px;}
.footer-social{display:flex;gap:10px;margin-top:20px;}
.footer-social a{
  width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-3);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.footer-social a:hover{color:var(--brand);border-color:rgba(25,192,220,.45);transform:translateY(-2px);}
.footer-title{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--text-3);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-links a:hover{color:var(--brand);transform:translateX(2px);}
.footer-contact li{font-size:14px;color:var(--text-3);}
.footer-bottom{
  margin-top:56px;padding:20px 0;
  border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-4);
}
.footer-bottom span{color:var(--text-4);}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  *{transition:none !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .section{padding:76px 0;}
  .media-row{gap:40px;}
}
@media (max-width:991.98px){
  .page-hero{padding:52px 0 46px;}
  .media-row{grid-template-columns:1fr;gap:26px;}
  .media-row.is-flip .media-figure{order:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .section{padding:58px 0;}
  .section-head{margin-bottom:32px;}
  .hero-card{padding:22px 20px;}
  .stat-bar{grid-template-columns:1fr;}
  .stat-item + .stat-item::before{left:22px;right:22px;top:0;bottom:auto;width:auto;height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);}
  .cta-band{padding:28px 22px;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn-glow,.cta-actions .btn-outline-soft{width:100%;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{justify-content:flex-start;}
}
@media (max-width:519.98px){
  .hero-card h1{font-size:27px;}
  .hero-lead{font-size:15px;}
  .media-body h3{font-size:18px;}
  .btn-glow,.btn-outline-soft{height:48px;}
}

/* roulang page: category2 */
:root{
  --bg-0:#060B14;
  --bg-1:#0A1524;
  --bg-2:#0E1E33;
  --brand:#19C0DC;
  --brand-600:#0E93B8;
  --brand-glow:rgba(25,192,220,.38);
  --indigo:#5B6CFF;
  --indigo-soft:rgba(91,108,255,.18);
  --amber:#FFB454;
  --text:#E8F0FA;
  --text-body:#C3CEE0;
  --text-dim:#8DA0BC;
  --text-mute:#5C6B82;
  --ok:#38D996;
  --warn:#FFB020;
  --err:#FF5C7A;
  --line:rgba(255,255,255,.10);
  --line-weak:rgba(255,255,255,.06);
  --line-brand:rgba(25,192,220,.45);
  --radius-card:18px;
  --radius-btn:12px;
  --radius-input:10px;
  --radius-img:14px;
  --sh-1:0 6px 18px rgba(3,10,22,.35);
  --sh-2:0 18px 40px rgba(3,10,22,.55);
  --sh-3:0 28px 64px rgba(3,10,22,.65);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t-fast:200ms;
  --t-base:240ms;
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text-body);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 8% -6%,rgba(25,192,220,.12),transparent 62%),
    radial-gradient(820px 520px at 98% 102%,rgba(91,108,255,.10),transparent 60%),
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;
  background-attachment:fixed,fixed,scroll,scroll;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--text-body);text-decoration:none;transition:color var(--t-fast) var(--ease);}
a:hover{color:var(--brand);}
h1,h2,h3,h4{color:var(--text);margin:0;font-weight:700;line-height:1.3;}
h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.15;letter-spacing:-.02em;}
h2{font-size:clamp(24px,3vw,36px);font-weight:700;}
h3{font-size:20px;}
h4{font-size:17px;font-weight:600;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(25,192,220,.45);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1320px;}}

/* ---------- 顶栏 ---------- */
.topbar{height:36px;background:linear-gradient(90deg,rgba(25,192,220,.10),rgba(91,108,255,.08));border-bottom:1px solid var(--line-weak);}
.topbar-inner{height:36px;display:flex;align-items:center;gap:14px;overflow:hidden;white-space:nowrap;}
.topbar-tag{font-size:12px;color:var(--text-dim);}
.topbar-tag b{color:var(--brand);font-weight:600;}
.topbar-sep{width:1px;height:12px;background:var(--line);display:inline-block;flex:none;}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;}
.site-nav{
  min-height:72px;
  background:rgba(6,11,20,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background var(--t-base) var(--ease),min-height var(--t-base) var(--ease),border-color var(--t-base) var(--ease);
  padding:0;
}
.site-header.scrolled .site-nav{
  min-height:60px;
  background:rgba(6,11,20,.86);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid var(--line-brand);
}
.site-nav .container{display:flex;align-items:center;gap:18px;flex-wrap:nowrap;}
.navbar-brand{display:flex;align-items:center;gap:10px;padding:0;margin:0;flex:none;}
.brand-mark{width:34px;height:34px;flex:none;filter:drop-shadow(0 0 8px var(--brand-glow));}
.brand-text{font-size:18px;font-weight:700;color:var(--text);letter-spacing:.01em;}
.brand-text span{color:var(--brand);}
.navbar-toggler{border:1px solid var(--line);border-radius:10px;padding:8px 10px;background:rgba(255,255,255,.04);}
.navbar-toggler:focus{box-shadow:none;}
.navbar-toggler-icon{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='rgba(232,240,250,.85)' stroke-width='2' stroke-linecap='round' d='M4 8h22M4 15h22M4 22h22'/%3E%3C/svg%3E");}
.navbar-nav{align-items:center;gap:4px;margin-left:12px;}
.navbar-nav .nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-body);
  padding:10px 12px;
  border-radius:10px;
  transition:color var(--t-fast) var(--ease),background var(--t-fast) var(--ease);
}
.navbar-nav .nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--indigo));
  transform:scaleX(0);transform-origin:left;transition:transform var(--t-base) var(--ease);
}
.navbar-nav .nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.navbar-nav .nav-link:hover::after{transform:scaleX(1);}
.navbar-nav .nav-link.active{color:var(--brand);}
.navbar-nav .nav-link.active::after{transform:scaleX(1);}
.nav-cta{display:flex;align-items:center;gap:10px;margin-left:auto;}

.btn-glow,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;white-space:nowrap;
  transition:all var(--t-base) var(--ease);
}
.btn-glow{
  color:#04131A;
  background:linear-gradient(135deg,#19C0DC,#0E93B8);
  border:0;
  box-shadow:0 0 0 1px rgba(25,192,220,.5),0 10px 28px rgba(25,192,220,.32);
}
.btn-glow:hover{color:#04131A;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(25,192,220,.6),0 14px 36px rgba(25,192,220,.42);}
.btn-glow:active{transform:translateY(0);}
.btn-line{
  color:var(--text);
  background:transparent;
  border:1px solid rgba(255,255,255,.22);
}
.btn-line:hover{color:var(--brand);border-color:var(--line-brand);background:rgba(25,192,220,.08);transform:translateY(-2px);}
.btn-line:active{transform:translateY(0);}
.btn-sm-cta{height:42px;padding:0 16px;font-size:14px;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  padding:72px 0 64px;
  background:
    radial-gradient(700px 320px at 12% 0%,rgba(25,192,220,.14),transparent 66%),
    linear-gradient(180deg,rgba(10,21,36,.94),rgba(6,11,20,.72));
  border-bottom:1px solid var(--line-weak);
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,192,220,.45),transparent);
  opacity:.7;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-mute);margin-bottom:18px;}
.crumb a{color:var(--text-dim);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:var(--text-mute);opacity:.7;}
.crumb .cur{color:var(--text-body);}
.hero-split{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:center;}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--brand);letter-spacing:.06em;text-transform:uppercase;margin-bottom:16px;}
.hero-eyebrow::before{content:"";width:40px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),transparent);}
.hero-lead{margin-top:18px;font-size:16px;color:var(--text-dim);max-width:560px;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 15px;border-radius:999px;
  font-size:13px;color:var(--text-body);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.03);
  transition:all var(--t-fast) var(--ease);
}
.tag-pill:hover{color:var(--brand);border-color:var(--line-brand);background:rgba(25,192,220,.08);transform:translateY(-2px);}
.tag-pill i{width:6px;height:6px;border-radius:50%;background:var(--brand);flex:none;box-shadow:0 0 8px var(--brand-glow);}
.tag-pill.alt i{background:var(--indigo);box-shadow:0 0 8px rgba(91,108,255,.55);}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-sm{padding:72px 0;}
.sec-head{max-width:720px;margin-bottom:48px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-label{display:inline-flex;align-items:center;gap:10px;font-size:13px;color:var(--brand);margin-bottom:14px;}
.sec-label::before{content:"";width:40px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--indigo));}
.sec-head.center .sec-label::before{background:linear-gradient(90deg,var(--brand),var(--indigo));}
.sec-desc{margin-top:14px;color:var(--text-dim);font-size:15px;line-height:1.85;}

/* ---------- 时间线 ---------- */
.timeline{position:relative;max-width:980px;}
.tl-item{position:relative;padding-left:88px;padding-bottom:56px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:19px;top:44px;bottom:-4px;width:2px;
  background:linear-gradient(180deg,rgba(25,192,220,.75),rgba(91,108,255,.32),rgba(25,192,220,0));
}
.tl-item:last-child::before{display:none;}
.tl-num{
  position:absolute;left:0;top:0;
  width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:14px;font-weight:700;color:var(--brand);
  background:linear-gradient(160deg,rgba(25,192,220,.16),rgba(255,255,255,.02));
  border:1px solid var(--line-brand);
  box-shadow:0 0 0 5px rgba(25,192,220,.06),0 0 18px rgba(25,192,220,.22);
}
.tl-body{
  border-radius:var(--radius-card);
  padding:26px 28px;
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  position:relative;
  box-shadow:var(--sh-1);
  transition:border-color var(--t-base) var(--ease),transform var(--t-base) var(--ease);
}
.tl-body::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,192,220,.6),transparent);
}
.tl-body:hover{border-color:rgba(25,192,220,.35);transform:translateY(-2px);}
.tl-body h3{margin-bottom:12px;}
.tl-body p{font-size:15px;color:var(--text-dim);line-height:1.85;}
.tl-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.tl-points span{
  font-size:13px;color:var(--text-body);
  padding:6px 12px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.tl-figure{margin-top:20px;border-radius:var(--radius-img);overflow:hidden;aspect-ratio:16/7;border:1px solid var(--line);}
.tl-figure img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.tl-body:hover .tl-figure img{transform:scale(1.03);}

/* ---------- 能力矩阵 ---------- */
.matrix-wrap{
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-2);
  overflow:hidden;
}
.matrix-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
table.matrix{width:100%;min-width:760px;border-collapse:collapse;}
table.matrix caption{caption-side:top;text-align:left;padding:22px 26px 4px;font-size:13px;color:var(--text-mute);}
table.matrix thead th{
  background:rgba(10,21,36,.92);
  color:var(--text);
  font-size:13px;
  font-weight:600;
  text-align:left;
  padding:16px 22px;
  border:0;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
table.matrix tbody td{
  padding:16px 22px;
  font-size:14px;
  color:var(--text-body);
  border:0;
  border-bottom:1px solid var(--line-weak);
  vertical-align:middle;
}
table.matrix tbody tr:nth-child(even){background:rgba(255,255,255,.022);}
table.matrix tbody tr:last-child td{border-bottom:0;}
table.matrix tbody tr:hover{background:rgba(25,192,220,.05);}
table.matrix td.name{color:var(--text);font-weight:600;font-size:15px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;line-height:1.6;white-space:nowrap;
}
.chip::before{content:"";width:6px;height:6px;border-radius:50%;flex:none;}
.chip-ok{color:var(--ok);border:1px solid rgba(56,217,150,.42);background:rgba(56,217,150,.08);}
.chip-ok::before{background:var(--ok);box-shadow:0 0 8px rgba(56,217,150,.6);}
.chip-warn{color:var(--warn);border:1px solid rgba(255,176,32,.42);background:rgba(255,176,32,.08);}
.chip-warn::before{background:var(--warn);box-shadow:0 0 8px rgba(255,176,32,.6);}
.chip-info{color:var(--brand);border:1px solid var(--line-brand);background:rgba(25,192,220,.08);}
.chip-info::before{background:var(--brand);box-shadow:0 0 8px var(--brand-glow);}
.chip-plain{color:var(--text-dim);border:1px solid var(--line);background:rgba(255,255,255,.03);}
.chip-plain::before{background:var(--text-mute);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  border-radius:14px;
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.018));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  overflow:hidden;
  transition:border-color var(--t-base) var(--ease);
  position:relative;
}
.faq-item::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--brand),var(--indigo));
  opacity:0;transition:opacity var(--t-base) var(--ease);
}
.faq-item.open{border-color:rgba(25,192,220,.35);}
.faq-item.open::after{opacity:1;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:transparent;border:0;text-align:left;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--text);
  transition:color var(--t-fast) var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--brand);font-size:15px;line-height:1;
  transition:transform var(--t-base) var(--ease),border-color var(--t-base) var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(180deg);border-color:var(--line-brand);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height var(--t-base) var(--ease);
}
.faq-a-inner{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--text-dim);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border-radius:24px;
  padding:48px;
  overflow:hidden;
  border:1px solid var(--line);
  background:
    radial-gradient(560px 260px at 88% 0%,rgba(91,108,255,.20),transparent 62%),
    radial-gradient(520px 260px at 6% 100%,rgba(25,192,220,.18),transparent 64%),
    linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  box-shadow:var(--sh-2);
}
.cta-band h2{max-width:640px;}
.cta-band p{margin-top:14px;max-width:620px;color:var(--text-dim);font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:0;
  background:#050A12;
  border-top:1px solid var(--line-brand);
  padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-about{font-size:14px;color:var(--text-dim);line-height:1.85;max-width:340px;}
.footer-social{display:flex;gap:10px;margin-top:20px;}
.footer-social a{
  width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-dim);
  background:rgba(255,255,255,.03);
  transition:all var(--t-fast) var(--ease);
}
.footer-social a:hover{color:var(--brand);border-color:var(--line-brand);background:rgba(25,192,220,.08);transform:translateY(-2px);}
.footer-title{font-size:15px;font-weight:600;color:var(--text);margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:var(--text-dim);display:inline-block;transition:all var(--t-fast) var(--ease);}
.footer-links a:hover{color:var(--brand);transform:translateX(2px);}
.footer-contact li{font-size:14px;color:var(--text-dim);margin-bottom:10px;display:flex;gap:8px;align-items:flex-start;}
.footer-contact b{color:var(--text-body);font-weight:600;}
.footer-bottom{
  margin-top:48px;padding:20px 0;
  border-top:1px solid var(--line-weak);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--text-mute);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .section{padding:80px 0;}
  .footer-grid{gap:32px;}
}
@media (max-width:991.98px){
  .site-nav .container{flex-wrap:wrap;padding-top:10px;padding-bottom:10px;}
  .navbar-collapse{
    margin-top:12px;
    border-top:1px solid var(--line-weak);
    padding-top:8px;
    width:100%;
  }
  .navbar-nav{align-items:stretch;gap:0;margin-left:0;}
  .navbar-nav .nav-link{padding:15px 8px;border-radius:8px;font-size:15px;display:flex;justify-content:space-between;align-items:center;}
  .navbar-nav .nav-link::after{display:none;}
  .navbar-nav .nav-link::before{
    content:"›";order:2;color:var(--text-mute);font-size:18px;line-height:1;
  }
  .navbar-nav{margin-bottom:8px;}
  .nav-cta{display:flex;width:100%;margin:8px 0 4px;}
  .nav-cta .btn-glow,.nav-cta .btn-line{flex:1;width:100%;}
  .hero-split{grid-template-columns:1fr;gap:36px;}
  .tag-cloud{justify-content:flex-start;}
  .section-sm{padding:64px 0;}
  .cta-band{padding:36px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-about{max-width:none;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .topbar-inner{gap:10px;}
  .page-hero{padding:48px 0 40px;}
  .section{padding:56px 0;}
  .sec-head{margin-bottom:32px;}
  .tl-item{padding-left:0;padding-bottom:36px;}
  .tl-item::before{display:none;}
  .tl-num{position:static;margin-bottom:16px;}
  .tl-body{padding:22px 20px;}
  .faq-q{padding:18px 20px;font-size:15px;}
  .faq-a-inner{padding:0 20px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  h1{font-size:clamp(26px,7.6vw,34px);}
  h2{font-size:clamp(22px,6vw,28px);}
  .btn-glow,.btn-line{width:100%;height:48px;}
  .nav-cta{flex-direction:column;}
  .cta-band{padding:28px 20px;border-radius:18px;}
  .cta-actions .btn-glow,.cta-actions .btn-line{width:100%;}
  .tag-pill{padding:8px 13px;font-size:12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}