/* ==========================================================================
   阿牛有话说 aniutalk.com — 设计系统 v2
   品牌语言沿用：蓝 #2E9FD8 / 深蓝 #0E5A82 / 海军蓝 #12293a / 橙 #F5A623
   结构面向 GEO：结论前置、问题分块、事实单元、可被摘引的段落
   ========================================================================== */

:root{
  --blue:#2E9FD8;
  --blue-deep:#1878AB;
  --blue-dark:#0E5A82;
  --navy:#12293a;
  --orange:#F5A623;
  --ink:#22313d;
  --ink-soft:#5d6c78;
  --ink-dim:#8595a1;
  --bg:#ffffff;
  --bg-soft:#f6f9fb;
  --bg-mist:#eef5fa;
  --line:#e6eef4;
  --line-2:#d5e3ec;
  --radius:14px;
  --radius-lg:22px;
  --shadow:0 6px 24px rgba(14,90,130,.08);
  --shadow-lg:0 18px 50px rgba(14,90,130,.13);
  --serif:"Noto Serif SC","Songti SC","SimSun",Georgia,serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,sans-serif;
  --wrap:1180px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--sans);color:var(--ink);background:var(--bg);
  line-height:1.8;font-size:16px;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--blue-deep);text-decoration:none}
a:hover{color:var(--blue-dark)}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;line-height:1.35;margin:0;letter-spacing:.01em}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.25em}
li{margin:.35em 0}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* ---------- 顶部通栏 ---------- */
.topstrip{background:var(--navy);color:#c8dceb;font-size:13px;letter-spacing:.02em}
.topstrip .wrap{display:flex;align-items:center;justify-content:center;gap:12px;height:38px;overflow:hidden}
.topstrip .dot{width:6px;height:6px;border-radius:50%;background:var(--orange);flex:none}
.topstrip a{color:#fff;font-weight:600;border-bottom:1px solid rgba(255,255,255,.35);padding-bottom:1px}
.topstrip a:hover{color:var(--orange);border-color:var(--orange)}

/* ---------- 页头 ---------- */
.site-head{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;gap:26px;height:72px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand img{width:46px;height:38px;object-fit:contain}
.brand b{display:block;font-family:var(--serif);font-size:17px;color:var(--navy);line-height:1.2}
.brand small{display:block;font-size:11px;color:var(--ink-dim);letter-spacing:.04em;line-height:1.4}
.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav a{position:relative;padding:9px 13px;font-size:14.5px;color:var(--ink);border-radius:8px;white-space:nowrap}
.nav a:hover{background:var(--bg-mist);color:var(--blue-dark)}
.nav a.active{color:var(--blue-dark);font-weight:600}
.nav a.active::after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--orange);border-radius:2px}
.nav .ext{color:var(--ink-soft);font-size:13.5px}
.head-cta{flex:none;margin-left:14px;padding:10px 20px;border-radius:999px;background:var(--blue-deep);color:#fff;font-size:14px;font-weight:600;white-space:nowrap;box-shadow:0 6px 18px rgba(24,120,171,.28)}
.head-cta:hover{background:var(--blue-dark);color:#fff}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line-2);border-radius:9px;width:42px;height:38px;font-size:17px;color:var(--ink);cursor:pointer}

/* ---------- 面包屑 ---------- */
.crumb{background:var(--bg-soft);border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-dim)}
.crumb .wrap{display:flex;align-items:center;gap:8px;height:44px;flex-wrap:wrap}
.crumb a{color:var(--ink-soft)}
.crumb a:hover{color:var(--blue-deep)}
.crumb span.sep{color:var(--line-2)}
.crumb .here{color:var(--ink)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(900px 420px at 82% -10%,rgba(46,159,216,.34),transparent 62%),
  radial-gradient(700px 380px at 8% 110%,rgba(46,159,216,.16),transparent 60%),
  linear-gradient(150deg,#0b2130 0%,#12293a 46%,#0E5A82 118%);
  color:#fff}
.hero::after{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 85%)}
.hero .wrap{position:relative;z-index:2;padding:72px 24px 76px}
.hero .kicker{display:inline-block;font-size:12.5px;letter-spacing:.22em;text-transform:uppercase;color:#8fc6e8;margin-bottom:20px}
.hero h1{font-size:clamp(30px,4.2vw,50px);color:#fff;letter-spacing:.005em}
.hero h1 em{font-style:normal;color:var(--orange)}
.hero .lede{margin-top:18px;max-width:760px;font-size:17px;line-height:1.9;color:#c6dae8}
.hero .lede b{color:#fff;font-weight:600}
.hero .head-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;align-items:center}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;transition:.18s}
.btn-primary{background:var(--orange);color:#3a2600;box-shadow:0 10px 26px rgba(245,166,35,.3)}
.btn-primary:hover{background:#ffb63a;color:#3a2600;transform:translateY(-1px)}
.btn-ghost{border:1px solid rgba(255,255,255,.34);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:46px;background:rgba(255,255,255,.14);border-radius:var(--radius);overflow:hidden;border:1px solid rgba(255,255,255,.14)}
.hero-stats div{background:rgba(11,33,48,.55);padding:18px 20px}
.hero-stats b{display:block;font-family:var(--serif);font-size:26px;color:#fff;line-height:1.2}
.hero-stats span{display:block;font-size:12.5px;color:#9dc2d8;margin-top:5px}

/* 紧凑 hero（内页） */
.hero--sub .wrap{padding:54px 24px 58px}
.hero--sub h1{font-size:clamp(27px,3.4vw,40px)}
.hero--sub .lede{font-size:16px;max-width:820px}

/* ---------- 正文骨架 ---------- */
.page{padding:56px 0 8px}
.shell{display:grid;grid-template-columns:minmax(0,1fr) 262px;gap:56px;align-items:start}
article{min-width:0}

/* 一分钟结论 */
.tldr{position:relative;background:linear-gradient(180deg,#f4fafd,#f8fcfd);border:1px solid var(--line);border-left:4px solid var(--orange);border-radius:0 var(--radius) var(--radius) 0;padding:26px 30px 22px;margin-bottom:44px}
.tldr .k{display:flex;align-items:center;gap:9px;font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--blue-dark);text-transform:uppercase;margin-bottom:12px}
.tldr .k::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--orange)}
.tldr p{font-size:16.5px;line-height:1.95;color:#2b3c49;margin:0 0 .7em}
.tldr p:last-child{margin-bottom:0}
.tldr b{color:var(--blue-dark)}

/* 章节标题层 */
.sec-head{margin:0 0 26px}
.sec-head .eyebrow{font-size:12px;letter-spacing:.2em;color:var(--ink-dim);text-transform:uppercase;margin-bottom:9px}
.sec-head h2{font-size:26px;color:var(--navy)}
.sec-head p{color:var(--ink-soft);margin:.6em 0 0;font-size:15px}

/* Q 区块 */
.qblock{padding:6px 0 40px;border-bottom:1px solid var(--line);margin-bottom:40px;scroll-margin-top:96px}
.qblock:last-of-type{border-bottom:0}
.qblock .qh{display:flex;gap:16px;align-items:flex-start;margin-bottom:18px}
.qno{flex:none;display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:11px;background:var(--navy);color:#fff;font-family:var(--serif);font-size:14px;letter-spacing:.03em;margin-top:3px}
.qblock h2{font-size:23px;color:var(--navy);line-height:1.5;margin:0}
.concl{border-left:2px solid var(--blue);padding-left:18px;margin:0 0 22px;font-size:16.5px;line-height:1.95;color:#2b3c49}
.concl .lb{color:var(--blue-dark);font-weight:700;margin-right:2px}
.qbody{color:#3a4a56;font-size:15.5px;line-height:1.95}
.qbody h3{font-size:16px;color:var(--navy);margin:24px 0 10px;font-family:var(--sans);font-weight:700}
.qbody ul{list-style:none;padding:0;margin:0 0 18px}
.qbody ul li{position:relative;padding-left:20px;margin:.5em 0}
.qbody ul li::before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--blue);opacity:.65}
.qbody strong{color:var(--navy)}

/* 表格 */
.tbl{width:100%;border-collapse:collapse;margin:6px 0 20px;font-size:14.5px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.tbl caption{text-align:left;font-size:13px;color:var(--ink-dim);padding:0 0 8px}
.tbl th{background:var(--bg-mist);color:var(--navy);font-weight:700;text-align:left;padding:12px 16px;border-bottom:1px solid var(--line-2);font-size:14px;white-space:nowrap}
.tbl td{padding:12px 16px;border-bottom:1px solid var(--line);color:#3a4a56;vertical-align:top}
.tbl tr:last-child td{border-bottom:0}
.tbl td b{color:var(--navy)}
@media(min-width:821px){.tbl th:first-child,.tbl td:first-child{white-space:nowrap}}

/* 事实单元 */
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:8px 0 30px}
.fact{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;box-shadow:var(--shadow)}
.fact b{display:block;font-family:var(--serif);font-size:30px;color:var(--blue-dark);line-height:1.15}
.fact .unit{font-size:14px;color:var(--blue-deep);margin-left:2px}
.fact span{display:block;font-size:13px;color:var(--ink-soft);margin-top:8px;line-height:1.6}

/* 案例引块 */
.quote{margin:26px 0;padding:24px 28px;background:var(--bg-soft);border-radius:var(--radius);border:1px solid var(--line);position:relative}
.quote::before{content:"“";position:absolute;left:16px;top:2px;font-family:var(--serif);font-size:56px;color:var(--line-2);line-height:1}
.quote p{margin:0 0 .5em;padding-left:26px;font-size:15.5px;color:#33454f}
.quote .who{padding-left:26px;font-size:13px;color:var(--ink-dim);margin:0}

/* 服务卡（支柱页顶部） */
.svc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:30px 0 10px}
.svc{border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:#fff;transition:.2s;display:block;color:inherit}
.svc:hover{border-color:var(--blue);box-shadow:var(--shadow-lg);transform:translateY(-2px);color:inherit}
.svc .t{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:17px;color:var(--navy);margin-bottom:9px}
.svc .t i{font-style:normal;font-size:18px}
.svc p{margin:0;font-size:14px;color:var(--ink-soft);line-height:1.8}
.svc .go{display:inline-block;margin-top:14px;font-size:13px;color:var(--blue-deep);font-weight:600}

/* FAQ */
.faq{margin:6px 0 30px}
.faq details{border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:10px;overflow:hidden}
.faq summary{cursor:pointer;list-style:none;padding:17px 52px 17px 20px;font-weight:600;color:var(--navy);font-size:15.5px;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:20px;top:14px;font-size:20px;color:var(--blue);transition:.2s;font-family:var(--sans)}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details[open] summary{border-bottom:1px solid var(--line);background:var(--bg-soft)}
.faq .ans{padding:18px 20px;font-size:15px;color:#3a4a56}

/* 相关阅读 */
.rel{margin:14px 0 10px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.rel-card{display:block;border:1px solid var(--line);border-radius:var(--radius);padding:20px;background:#fff;color:inherit;transition:.2s;height:100%}
.rel-card:hover{border-color:var(--blue);box-shadow:var(--shadow);color:inherit}
.rel-card .tag{font-size:11.5px;letter-spacing:.12em;color:var(--blue-deep);text-transform:uppercase}
.rel-card b{display:block;margin:8px 0 8px;font-family:var(--serif);font-size:15.5px;color:var(--navy);line-height:1.55}
.rel-card span{font-size:13px;color:var(--ink-dim);line-height:1.7}

/* CTA */
.cta{margin:52px 0 60px;background:linear-gradient(135deg,#0E5A82,#12293a);border-radius:var(--radius-lg);padding:44px 46px;color:#fff;position:relative;overflow:hidden}
.cta::after{content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(245,166,35,.3),transparent 68%)}
.cta h2{font-size:24px;color:#fff;margin-bottom:12px}
.cta p{color:#c0d6e5;font-size:15px;max-width:620px;margin-bottom:24px}
.cta .head-row{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:2}

/* 侧栏 */
.side{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.side-box{border:1px solid var(--line);border-radius:var(--radius);padding:20px;background:#fff}
.side-box .h{font-size:12px;letter-spacing:.16em;color:var(--ink-dim);text-transform:uppercase;margin-bottom:12px}
.toc{list-style:none;padding:0;margin:0;font-size:14px}
.toc li{margin:0;padding:0;border:0;list-style:none}
.toc a{display:block;padding:9px 10px 9px 13px;border:0;border-left:2px solid var(--line);color:var(--ink-soft);line-height:1.55;font-size:13.5px;text-decoration:none}
.toc a:hover{color:var(--blue-deep);border-left-color:var(--blue);background:var(--bg-soft)}
.side-cta{background:var(--navy);color:#fff;border:0}
.side-cta .h{color:#8fc6e8}
.side-cta p{font-size:13.5px;color:#c0d6e5;margin:0 0 14px;line-height:1.75}
.side-cta .btn{width:100%;justify-content:center;padding:11px 16px;font-size:14px}
.side-cta .qr{width:132px;margin:0 auto 12px;border-radius:10px;background:#fff;padding:6px}

/* 页面尾注 */
.updated{margin:30px 0 0;font-size:12.5px;color:var(--ink-dim);border-top:1px dashed var(--line-2);padding-top:14px}

/* ---------- 首页专用 ---------- */
.sec{padding:64px 0}
.sec.soft{background:var(--bg-soft)}
.sec-head-center{text-align:center;max-width:720px;margin:0 auto 40px}
.sec-head-center .eyebrow{font-size:12px;letter-spacing:.2em;color:var(--blue-deep);text-transform:uppercase;margin-bottom:10px}
.sec-head-center h2{font-size:30px;color:var(--navy)}
.sec-head-center p{color:var(--ink-soft);margin-top:12px;font-size:15.5px}

.pillars{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.pillar{position:relative;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px 24px 24px;background:#fff;color:inherit;transition:.22s;overflow:hidden}
.pillar::before{content:"";position:absolute;left:0;top:0;height:3px;width:100%;background:linear-gradient(90deg,var(--blue),var(--blue-deep));opacity:0;transition:.22s}
.pillar:hover{border-color:var(--blue);box-shadow:var(--shadow-lg);transform:translateY(-3px);color:inherit}
.pillar:hover::before{opacity:1}
.pillar .pn{font-family:var(--serif);font-size:13px;color:var(--orange);letter-spacing:.1em}
.pillar h3{font-size:19px;color:var(--navy);margin:10px 0 10px}
.pillar p{font-size:13.5px;color:var(--ink-soft);line-height:1.8;margin:0 0 16px;flex:1}
.pillar .go{font-size:13px;color:var(--blue-deep);font-weight:600}

.founder{display:grid;grid-template-columns:300px 1fr;gap:44px;align-items:center}
.founder .ph{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
.founder h2{font-size:28px;color:var(--navy);margin-bottom:6px}
.founder .role{color:var(--blue-deep);font-size:14px;font-weight:600;letter-spacing:.04em;margin-bottom:18px}
.founder p{color:#3a4a56;font-size:15.5px}
.founder .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.founder .tags span{font-size:12.5px;color:var(--blue-dark);background:var(--bg-mist);border:1px solid var(--line);border-radius:999px;padding:5px 13px}

.logo-strip{display:grid;grid-template-columns:repeat(8,1fr);gap:12px;align-items:center}
.logo-strip div{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px;height:74px;display:flex;align-items:center;justify-content:center;transition:.2s}
.logo-strip img{max-height:46px;object-fit:contain;transition:.2s}
.logo-strip div:hover{border-color:var(--line-2);box-shadow:0 6px 18px rgba(14,90,130,.07)}

/* ---------- 图库 ---------- */
.gal{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:16px 0 0;align-items:start}
.gal.g2{grid-template-columns:repeat(2,1fr)}
.gal figure{margin:0;border-radius:12px;overflow:hidden;background:#fff;border:1px solid var(--line)}
.gal img{width:100%;height:auto;object-fit:contain;background:#fff}
.gal figcaption{font-size:12.5px;color:var(--ink-soft);padding:9px 12px;background:#fff;border-top:1px solid var(--line)}

.p-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.p-card{border:1px solid var(--line);border-radius:10px;background:#fff;height:88px;display:flex;align-items:center;justify-content:center;padding:10px}
.p-card img{max-height:58px;object-fit:contain}

/* ---------- 页脚 ---------- */
.site-foot{background:#0d202c;color:#9db4c4;padding:56px 0 0;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:40px}
.site-foot h4{font-family:var(--sans);font-size:13px;letter-spacing:.14em;color:#fff;text-transform:uppercase;margin-bottom:16px;font-weight:700}
.site-foot a{color:#9db4c4;display:block;padding:5px 0}
.site-foot a:hover{color:#fff}
.site-foot .fbrand{display:flex;gap:11px;align-items:center;margin-bottom:16px}
.site-foot .fbrand img{width:46px;height:38px;object-fit:contain}
.site-foot .fbrand b{font-family:var(--serif);color:#fff;font-size:17px;display:block;line-height:1.3}
.site-foot .fbrand small{font-size:11.5px;color:#7b96a8}
.site-foot p{color:#7b96a8;line-height:1.9;font-size:13.5px;margin:0 0 10px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;font-size:12.5px;color:#6d8a9d;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.foot-contact b{color:#fff;font-weight:600}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .shell{grid-template-columns:1fr;gap:0}
  .side{position:static;flex-direction:row;flex-wrap:wrap;margin:28px 0 40px;order:2}
  .side-box{flex:1 1 260px}
  .side-box:first-child{display:none}
  .pillars{grid-template-columns:repeat(2,1fr)}
  .logo-strip{grid-template-columns:repeat(4,1fr)}
  .p-grid{grid-template-columns:repeat(4,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:820px){
  .topstrip .wrap{height:36px;padding:0 16px}
  .topstrip span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .topstrip a{flex:none;font-size:12.5px}
  .crumb .wrap{height:auto;min-height:44px;padding:9px 16px;font-size:12.5px}
  .nav{display:none}
  .nav.open{display:flex;position:absolute;left:0;right:0;top:72px;background:#fff;flex-direction:column;align-items:stretch;padding:12px;gap:2px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg)}
  .nav.open a{padding:12px 14px;border-radius:9px}
  .nav.open a.active::after{display:none}
  .burger{display:block}
  .head-cta{display:none}
  .hero .wrap{padding:52px 24px 56px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .founder{grid-template-columns:1fr}
  .founder .ph{max-width:320px}
  .svg-grid,.svc-grid,.facts,.rel-grid{grid-template-columns:1fr}
  .gal{grid-template-columns:repeat(2,1fr)}
  .p-grid{grid-template-columns:repeat(3,1fr)}
  .page{padding:36px 0 0}
  .cta{padding:32px 24px;margin:36px 0 44px}
  .sec{padding:48px 0}
}
@media (max-width:640px){
  .tbl{font-size:13px}
  .tbl th,.tbl td{padding:9px 10px}
  .pillars{grid-template-columns:1fr}
  .pillar{padding:22px 20px}
}
@media (max-width:520px){
  .gal{grid-template-columns:1fr 1fr}
  .p-grid{grid-template-columns:repeat(2,1fr)}
  .qno{width:36px;height:36px;font-size:12.5px}
  .qblock h2{font-size:19.5px}
  .tldr{padding:20px 20px 16px}
  .logo-strip{grid-template-columns:repeat(3,1fr)}
}

/* ---------- 返回顶部（长页面右下角悬浮） ---------- */
.backtop{
  position:fixed;right:26px;bottom:30px;z-index:70;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;
  width:48px;height:48px;border-radius:50%;
  background:#fff;border:1px solid var(--line-2);color:var(--blue-deep);
  box-shadow:0 10px 26px rgba(14,90,130,.16);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.backtop.show{opacity:1;visibility:visible;transform:translateY(0)}
.backtop:hover{background:var(--blue-deep);border-color:var(--blue-deep);color:#fff}
.backtop .ar{font-size:16px;line-height:1;font-weight:700}
.backtop .tx{font-size:9.5px;line-height:1;letter-spacing:.06em;opacity:.85}
@media (max-width:760px){
  .backtop{right:14px;bottom:18px;width:42px;height:42px;box-shadow:0 8px 20px rgba(14,90,130,.2)}
  .backtop .tx{display:none}
}
@media print{.backtop{display:none}}

/* ---------- 关于我们：宣传片 / 图文块 ---------- */
.ab-video{position:relative;width:100%;max-width:880px;margin:0 auto;aspect-ratio:16/9;border-radius:16px;overflow:hidden;background:#0b2130;box-shadow:var(--shadow-lg)}
.ab-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.ab-split{display:grid;grid-template-columns:1.25fr .75fr;gap:28px;align-items:start;margin:4px 0 2px}
.ab-split.rev{grid-template-columns:.8fr 1.2fr}
.ab-pic{border-radius:14px;overflow:hidden;border:1px solid var(--line);background:var(--bg-mist)}
.ab-pic img{width:100%;height:auto;display:block}
.ab-pic .cap{font-size:12.5px;color:var(--ink-soft);background:#fff;padding:9px 12px;border-top:1px solid var(--line)}
.ab-media{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0 0}
.ab-media figure{margin:0}
.ab-media img{width:100%;height:auto;border-radius:12px;border:1px solid var(--line);display:block}
.ab-media figcaption{font-size:12.5px;color:var(--ink-soft);margin-top:7px}
@media (max-width:820px){
  .ab-split,.ab-split.rev{grid-template-columns:1fr;gap:16px}
  .ab-media{grid-template-columns:1fr}
}

/* ---------- 页脚：关联平台入口（独立整行，要显眼） ---------- */
.site-foot .plat-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 16px}
.site-foot .plat-row .lb{font-size:12.5px;letter-spacing:.14em;color:#7b96a8;margin-right:4px}
.site-foot .plat-row a{display:inline-flex;align-items:baseline;gap:7px;padding:9px 16px;
  border:1px solid rgba(255,255,255,.22);border-radius:999px;background:rgba(255,255,255,.06);
  font-size:14px;transition:.18s}
.site-foot .plat-row a b{color:#fff;font-weight:600;font-size:14.5px}
.site-foot .plat-row a small{color:#8fadc0;font-size:11.5px;letter-spacing:.02em}
.site-foot .plat-row a:hover{background:var(--blue-deep);border-color:var(--blue-deep);color:#fff}
.site-foot .plat-row a:hover small{color:rgba(255,255,255,.85)}
.foot-bottom a{display:inline;padding:0;color:#8fadc0;border-bottom:1px solid rgba(255,255,255,.25)}
.foot-bottom a:hover{color:#fff;border-color:#fff}

/* ---------- 关键事实补充块 ---------- */
.cust-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:4px 0 8px}
.cust-grid>div{border:1px solid var(--line);border-radius:12px;padding:16px 18px;background:#fff}
.cust-grid .ch{font-size:12.5px;letter-spacing:.1em;color:var(--blue-deep);font-weight:700;margin-bottom:9px}
.cust-grid p{font-size:14px;color:var(--ink-soft);line-height:1.95;margin:0}
.eq-note{margin:4px 0 8px;padding:18px 22px;border:1px solid var(--line);border-left:4px solid var(--orange);
  border-radius:0 12px 12px 0;background:#fff;font-size:14.5px;line-height:1.95;color:var(--ink-soft)}
.eq-note b{color:var(--blue-dark)}
@media (max-width:760px){.cust-grid{grid-template-columns:1fr}}