:root{
  --xq-navy:#001442;
  --xq-navy-2:#082555;
  --xq-blue:#0057ff;
  --xq-blue-2:#0b73ff;
  --xq-cyan:#00d5ff;
  --xq-ink:#142a46;
  --xq-muted:#5b6d83;
  --xq-line:#dfe7f0;
  --xq-line-strong:#cbd8e6;
  --xq-surface:#ffffff;
  --xq-soft:#f4f8fb;
  --xq-soft-blue:#eef5ff;
  --xq-shadow:0 20px 60px rgba(0,29,75,.10);
  --xq-shadow-soft:0 10px 30px rgba(0,29,75,.08);
  --radius-xl:28px;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --header-h:76px;
  --max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 18px)}
body{margin:0;color:var(--xq-ink);font-family:Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;background:#fff;line-height:1.65;-webkit-font-smoothing:antialiased}
body.is-menu-open{overflow:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.22;letter-spacing:-.025em;color:var(--xq-navy)}
p{color:var(--xq-muted)}
.container{width:min(var(--max),calc(100% - 48px));margin-inline:auto}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-soft{background:var(--xq-soft)}
.section-blue{background:linear-gradient(180deg,#f3f8ff 0%,#fff 100%)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--xq-blue);text-transform:uppercase;margin-bottom:18px}
.eyebrow::before{content:"";width:26px;height:2px;border-radius:999px;background:linear-gradient(90deg,var(--xq-blue),var(--xq-cyan))}
.display{font-size:clamp(42px,5.2vw,72px);font-weight:750;letter-spacing:-.055em}
.h2{font-size:clamp(32px,4vw,50px);font-weight:720}
.h3{font-size:26px;font-weight:700}
.lead{font-size:18px;line-height:1.9;max-width:700px}
.muted{color:var(--xq-muted)}
.gradient-text{background:linear-gradient(100deg,var(--xq-blue),#0097ff 58%,var(--xq-cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.skip-link{position:fixed;left:18px;top:-80px;z-index:1000;background:#fff;color:var(--xq-navy);padding:10px 16px;border-radius:10px;box-shadow:var(--xq-shadow)}
.skip-link:focus{top:12px}
:focus-visible{outline:3px solid rgba(0,87,255,.36);outline-offset:3px}

/* Header */
.site-header{position:sticky;top:0;z-index:100;height:var(--header-h);background:rgba(255,255,255,.88);backdrop-filter:blur(18px);border-bottom:1px solid rgba(210,222,235,.75)}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:30px}
.brand-logo{display:flex;align-items:center;width:132px;flex:0 0 auto}
.brand-logo img{width:100%;height:auto}
.site-nav{display:flex;align-items:center;gap:30px}
.site-nav a{font-size:15px;font-weight:550;color:#304660;transition:.2s ease}
.site-nav a:hover,.site-nav a[aria-current="page"]{color:var(--xq-blue)}
.nav-cta{display:inline-flex!important;align-items:center;gap:10px;background:var(--xq-blue);color:#fff!important;padding:10px 18px;border-radius:999px;box-shadow:0 8px 22px rgba(0,87,255,.20)}
.nav-cta:hover{transform:translateY(-1px);background:#0048d5}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--xq-line);border-radius:12px;background:#fff;padding:11px;align-content:center;gap:5px}
.menu-toggle span{display:block;height:2px;background:var(--xq-navy);border-radius:5px;transition:.2s ease}

/* Buttons */
.actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:12px 22px;border-radius:999px;border:1px solid transparent;background:var(--xq-blue);color:#fff;font-weight:650;box-shadow:0 10px 25px rgba(0,87,255,.20);transition:.2s ease}
.button:hover{transform:translateY(-2px);background:#004bdc;box-shadow:0 14px 30px rgba(0,87,255,.25)}
.button-secondary{background:#fff;color:var(--xq-navy);border-color:var(--xq-line-strong);box-shadow:none}
.button-secondary:hover{background:var(--xq-soft);border-color:#aebed0}
.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--xq-blue);font-weight:650}
.text-link svg{transition:.2s ease}
.text-link:hover svg{transform:translateX(3px)}

/* Hero */
.hero{position:relative;overflow:hidden;background:radial-gradient(circle at 90% 5%,rgba(0,213,255,.18),transparent 34%),linear-gradient(135deg,#f8fbff 0%,#eef6ff 55%,#fff 100%)}
.hero::before{content:"";position:absolute;width:560px;height:560px;border:1px solid rgba(0,87,255,.12);border-radius:50%;right:-260px;top:-250px;box-shadow:0 0 0 60px rgba(0,87,255,.03),0 0 0 130px rgba(0,213,255,.025)}
.hero-inner{min-height:690px;display:grid;grid-template-columns:.92fr 1.08fr;gap:72px;align-items:center;padding:88px 0}
.hero-copy{position:relative;z-index:2}
.hero-copy .lead{margin-top:24px;max-width:590px}
.hero-copy .actions{margin-top:34px}
.hero-visual{position:relative;min-width:0}
.hero-frame{position:relative;border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--xq-shadow);background:#dfeaf3;aspect-ratio:1.28/1}
.hero-frame img{width:100%;height:100%;object-fit:cover}
.hero-frame::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(0,20,66,.28));pointer-events:none}
.floating-card{position:absolute;left:-38px;bottom:36px;z-index:3;padding:18px 20px;border-radius:16px;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);box-shadow:var(--xq-shadow-soft);border:1px solid rgba(255,255,255,.72)}
.floating-card strong{display:block;color:var(--xq-navy);font-size:17px}
.floating-card span{display:block;color:var(--xq-muted);font-size:13px;margin-top:4px}
.signal-dot{position:absolute;right:13%;top:18%;width:14px;height:14px;border-radius:50%;background:var(--xq-cyan);z-index:4;box-shadow:0 0 0 9px rgba(0,213,255,.12),0 0 0 20px rgba(0,87,255,.07);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{50%{box-shadow:0 0 0 14px rgba(0,213,255,.08),0 0 0 32px rgba(0,87,255,.02)}}

/* Homepage story/product */
.split{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.split.reverse .split-media{order:2}
.split-copy .lead{margin-top:22px}
.split-copy .actions{margin-top:30px}
.media-card{border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--xq-shadow-soft);background:#eaf1f7;position:relative}
.media-card img{width:100%;height:100%;object-fit:cover}
.media-card.landscape{aspect-ratio:1.6/1}
.media-card.squareish{aspect-ratio:1.25/1}
.media-card .media-overlay{position:absolute;inset:auto 20px 20px 20px;background:rgba(0,20,66,.78);backdrop-filter:blur(10px);color:#fff;border-radius:14px;padding:14px 16px;font-size:14px}
.product-bullets{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:28px}
.product-bullet{padding:18px;border:1px solid var(--xq-line);border-radius:16px;background:#fff}
.product-bullet strong{display:block;font-size:16px;color:var(--xq-navy)}
.product-bullet span{display:block;font-size:13px;color:var(--xq-muted);margin-top:4px}

/* Certifications */
.cert-section{padding:68px 0;background:var(--xq-navy);color:#fff;position:relative;overflow:hidden}
.cert-section::after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;right:-180px;top:-260px;background:radial-gradient(circle,rgba(0,213,255,.22),transparent 65%)}
.cert-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:32px;position:relative;z-index:2}
.cert-head h2{color:#fff;font-size:32px}
.cert-head p{color:#a9bdd7;font-size:14px}
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;position:relative;z-index:2}
.cert-card{display:flex;align-items:center;gap:18px;padding:22px;border:1px solid rgba(255,255,255,.13);border-radius:18px;background:rgba(255,255,255,.06);backdrop-filter:blur(10px)}
.cert-mark{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;background:rgba(255,255,255,.1);flex:0 0 auto}
.cert-mark svg{width:32px;height:32px}
.cert-card strong{display:block;color:#fff;font-size:18px}
.cert-card span{display:block;color:#a9bdd7;font-size:13px;margin-top:3px}

/* Cards / grids */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:40px}
.card{background:#fff;border:1px solid var(--xq-line);border-radius:var(--radius-lg);padding:28px;box-shadow:0 8px 28px rgba(0,34,84,.05)}
.card-icon{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#eef5ff,#e8fbff);color:var(--xq-blue);margin-bottom:22px}
.card-icon svg{width:24px;height:24px}
.card p{margin-top:12px;font-size:15px}

/* Product page */
.page-hero{padding:88px 0 76px;background:linear-gradient(180deg,#f4f9ff 0%,#fff 100%)}
.page-hero-grid{display:grid;grid-template-columns:.78fr 1.22fr;gap:64px;align-items:center}
.page-hero .lead{margin-top:22px}
.page-hero .actions{margin-top:30px}
.product-hero-image{border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--xq-shadow);aspect-ratio:1.55/1}
.product-hero-image img{width:100%;height:100%;object-fit:cover}
.section-heading{display:grid;grid-template-columns:.75fr 1.25fr;gap:60px;align-items:end;margin-bottom:42px}
.section-heading p{font-size:18px}
.scene-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;grid-template-rows:repeat(2,240px);gap:18px}
.scene-card{position:relative;overflow:hidden;border-radius:20px;background:#dfe8f0;min-height:220px}
.scene-card:first-child{grid-row:1/3}
.scene-card img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.scene-card:hover img{transform:scale(1.035)}
.scene-caption{position:absolute;inset:auto 14px 14px 14px;padding:13px 14px;background:rgba(0,20,66,.80);backdrop-filter:blur(8px);border-radius:14px;color:#fff}
.scene-caption strong{display:block;font-size:16px}
.scene-caption span{display:block;font-size:12px;color:#cbd8e9;margin-top:3px}
.embodied-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:30px;align-items:stretch}
.embodied-main{position:relative;border-radius:24px;overflow:hidden;min-height:520px}
.embodied-main img{width:100%;height:100%;object-fit:cover}
.embodied-side{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.mini-scene{border-radius:18px;overflow:hidden;background:#fff;border:1px solid var(--xq-line);display:flex;flex-direction:column}
.mini-scene img{width:100%;height:150px;object-fit:cover}
.mini-scene div{padding:16px}
.mini-scene strong{display:block;color:var(--xq-navy)}
.mini-scene span{display:block;font-size:13px;color:var(--xq-muted);margin-top:4px}
.service-list{grid-column:1/3;padding:20px;border-radius:18px;background:linear-gradient(135deg,var(--xq-navy),#0a3974);color:#fff;display:grid;grid-template-columns:repeat(3,1fr);gap:12px;align-content:center}
.service-list span{display:flex;align-items:center;gap:8px;font-size:14px;color:#d7e5f7}
.service-list i{width:7px;height:7px;border-radius:50%;background:var(--xq-cyan)}

/* Agent demo */
.agent-wrap{border:1px solid var(--xq-line);border-radius:28px;background:#f6f9fc;padding:20px;box-shadow:var(--xq-shadow-soft)}
.agent-titlebar{display:flex;justify-content:space-between;gap:24px;align-items:center;padding:6px 6px 20px}
.agent-titlebar h3{font-size:22px}
.agent-titlebar span{font-size:13px;color:var(--xq-muted)}
.agent-stage{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px}
.teacher-app{background:#fff;border:1px solid #d8e2ec;border-radius:20px;overflow:hidden;min-height:520px;display:grid;grid-template-columns:170px minmax(0,1fr)}
.teacher-sidebar{background:#071f49;color:#dbe7f7;padding:22px 16px}
.teacher-brand{display:flex;align-items:center;gap:10px;font-weight:700;color:#fff;margin-bottom:26px}
.teacher-brand img{width:28px;height:28px}
.teacher-nav{display:grid;gap:8px}
.teacher-nav span{padding:10px 12px;border-radius:10px;font-size:13px;color:#adc2db}
.teacher-nav span.active{background:rgba(0,87,255,.35);color:#fff}
.teacher-main{padding:20px;position:relative;overflow:hidden}
.teacher-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
.teacher-top strong{color:var(--xq-navy)}
.teacher-top span{font-size:12px;color:var(--xq-muted)}
.metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.metric{padding:13px;border-radius:12px;background:#f4f7fb;border:1px solid #e3eaf2}
.metric span{display:block;font-size:11px;color:var(--xq-muted)}
.metric strong{display:block;font-size:22px;margin-top:4px;color:var(--xq-navy);transition:.35s ease}
.chart-card{margin-top:12px;border:1px solid #e2e9f1;border-radius:14px;padding:14px}
.chart-head{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--xq-muted)}
.bar-chart{height:120px;display:flex;align-items:end;gap:12px;padding:18px 6px 0;border-bottom:1px solid #dfe7f0}
.bar-group{flex:1;display:flex;align-items:end;justify-content:center;gap:4px;height:100%}
.bar{width:12px;height:32%;border-radius:5px 5px 0 0;background:#9fbfff;transition:height .65s cubic-bezier(.22,.8,.3,1)}
.bar.primary{background:linear-gradient(180deg,var(--xq-cyan),var(--xq-blue))}
.bar-chart.is-result .bar:nth-child(1){height:82%}.bar-chart.is-result .bar:nth-child(2){height:68%}.bar-chart.is-result .bar:nth-child(3){height:74%}
.table-mini{margin-top:12px;display:grid;gap:7px}
.table-row{display:grid;grid-template-columns:1.2fr repeat(3,.6fr);gap:8px;padding:8px 10px;border-radius:9px;background:#f7f9fc;font-size:11px;color:#43566c}
.table-row.head{background:transparent;font-weight:650;color:var(--xq-muted)}
.agent-panel{position:absolute;right:18px;bottom:18px;width:min(330px,calc(100% - 36px));border:1px solid #dce5ee;border-radius:16px;background:#fff;box-shadow:0 12px 32px rgba(0,31,76,.12);overflow:hidden}
.agent-panel-head{padding:12px 14px;border-bottom:1px solid #e7edf3;display:flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--xq-navy)}
.agent-orb{width:24px;height:24px;border-radius:50%;background:radial-gradient(circle at 30% 25%,var(--xq-cyan),var(--xq-blue));box-shadow:0 0 0 5px rgba(0,87,255,.08)}
.agent-messages{height:106px;padding:12px 14px;overflow:hidden;font-size:12px;color:#4d6077}
.agent-status{display:flex;align-items:center;gap:7px;color:var(--xq-blue);opacity:0;transform:translateY(6px);transition:.25s ease}
.agent-status.show{opacity:1;transform:none}
.agent-status i{width:7px;height:7px;border-radius:50%;background:var(--xq-cyan);animation:blink 1s infinite}
@keyframes blink{50%{opacity:.35}}
.agent-result{margin-top:8px;opacity:0;transform:translateY(6px);transition:.3s ease;color:#26425f}
.agent-result.show{opacity:1;transform:none}
.agent-input{display:flex;align-items:center;gap:8px;padding:10px;border-top:1px solid #e7edf3;background:#f7f9fc}
.agent-input-box{flex:1;min-height:34px;border:1px solid #d6e0ea;background:#fff;border-radius:10px;padding:8px 10px;font-size:12px;color:#30465e;white-space:nowrap;overflow:hidden}
.agent-input-box::after{content:"";display:inline-block;width:1px;height:13px;background:var(--xq-blue);margin-left:2px;vertical-align:-2px;animation:caret .8s step-end infinite}
@keyframes caret{50%{opacity:0}}
.agent-send{width:34px;height:34px;border:0;border-radius:10px;background:var(--xq-blue);color:#fff;display:grid;place-items:center}
.phone-shell{background:#18283b;border-radius:34px;padding:10px;box-shadow:0 18px 40px rgba(0,25,60,.2);align-self:stretch;max-height:520px}
.phone-screen{height:100%;min-height:500px;border-radius:26px;background:#ededed;overflow:hidden;position:relative}
.wx-status{height:28px;padding:7px 14px 0;display:flex;justify-content:space-between;font-size:10px;color:#111;background:#ededed}
.wx-head{height:46px;display:flex;align-items:center;justify-content:center;font-weight:650;color:#111;position:relative;border-bottom:1px solid #d8d8d8}
.wx-head span{position:absolute;left:13px;font-size:19px;font-weight:400}
.wx-page{position:absolute;inset:74px 0 0;background:#ededed;transition:transform .45s cubic-bezier(.2,.8,.2,1),opacity .35s}
.wx-page.hidden-left{transform:translateX(-100%);opacity:.3}
.wx-page.hidden-right{transform:translateX(100%);opacity:.3}
.wx-chat-list{padding-top:5px}
.wx-chat{display:grid;grid-template-columns:46px 1fr auto;gap:10px;padding:11px 13px;background:#fff;border-bottom:1px solid #ececec;align-items:center}
.wx-avatar{width:46px;height:46px;border-radius:8px;display:grid;place-items:center;background:#07c160;color:#fff;font-size:20px;position:relative}
.wx-avatar .dot{position:absolute;right:-4px;top:-5px;width:17px;height:17px;border-radius:50%;background:#fa5151;color:#fff;border:2px solid #ededed;font-size:9px;display:grid;place-items:center}
.wx-chat strong{display:block;color:#111;font-size:14px;font-weight:500}
.wx-chat small{display:block;color:#999;font-size:11px;margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:145px}
.wx-chat time{font-size:10px;color:#aaa;align-self:start}
.wx-notice{padding:12px;background:#f2f2f2;height:100%}
.wx-card{background:#fff;border-radius:10px;padding:14px;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.wx-card-top{display:flex;align-items:center;gap:8px;font-size:12px;color:#666;padding-bottom:10px;border-bottom:1px solid #eee}
.wx-card-logo{width:26px;height:26px;border-radius:7px;background:#e8f1ff;display:grid;place-items:center}
.wx-card h4{font-size:16px;color:#111;margin-top:12px}
.wx-card p{font-size:12px;color:#777;margin-top:7px}
.wx-card-foot{display:flex;justify-content:space-between;align-items:center;margin-top:13px;padding-top:10px;border-top:1px solid #eee;color:#888;font-size:11px}
.wx-mini{background:#f6f7f9;height:100%;overflow:hidden}
.mini-hero{background:linear-gradient(135deg,#0b3f83,#0068d9);color:#fff;padding:18px 16px 20px}
.mini-hero small{opacity:.8}.mini-hero h4{color:#fff;font-size:19px;margin-top:6px}.mini-hero p{color:#d7e8ff;font-size:12px;margin-top:3px}
.record-list{padding:12px;display:grid;gap:10px;transition:transform .6s ease}
.record-card{background:#fff;border-radius:12px;padding:13px;box-shadow:0 3px 12px rgba(21,46,80,.05)}
.record-card-top{display:flex;justify-content:space-between;align-items:center}.record-card strong{font-size:14px;color:#111}.record-card em{font-style:normal;font-size:11px;color:#07a95a;background:#ecfbf3;padding:3px 7px;border-radius:999px}
.record-card p{font-size:11px;color:#777;margin-top:7px}.video-thumb{height:84px;border-radius:9px;margin-top:9px;background:linear-gradient(135deg,#c5ddf2,#7aa9d4);display:grid;place-items:center;position:relative;overflow:hidden}
.video-thumb::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(0,20,66,.25))}
.play{width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.9);display:grid;place-items:center;color:var(--xq-blue);z-index:2}

/* Governance */
.governance-flow{display:grid;grid-template-columns:.82fr .72fr 1.25fr;gap:18px;align-items:stretch}
.flow-column{border:1px solid var(--xq-line);border-radius:22px;background:#fff;padding:20px;position:relative;overflow:hidden}
.flow-column::after{content:"";position:absolute;right:-10px;top:50%;width:20px;height:2px;background:linear-gradient(90deg,var(--xq-blue),var(--xq-cyan));box-shadow:18px 0 0 -6px var(--xq-cyan)}
.flow-column:last-child::after{display:none}
.flow-title{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.flow-title span{width:32px;height:32px;border-radius:10px;background:#eef5ff;color:var(--xq-blue);display:grid;place-items:center;font-weight:800;font-size:12px}
.flow-title h3{font-size:18px}
.school-stack{display:grid;gap:10px}
.school-node{padding:12px;border-radius:12px;background:#f6f9fc;border:1px solid #e2e9f1}
.school-node strong{display:block;font-size:13px;color:var(--xq-navy)}
.school-node span{display:block;font-size:11px;color:var(--xq-muted);margin-top:3px}
.hub-core{height:calc(100% - 48px);display:grid;place-items:center;text-align:center;background:radial-gradient(circle at 50% 42%,rgba(0,213,255,.16),transparent 35%),linear-gradient(135deg,#071f49,#0a4b92);border-radius:16px;color:#fff;padding:20px}
.hub-orb{width:76px;height:76px;border-radius:22px;background:linear-gradient(135deg,var(--xq-blue),var(--xq-cyan));display:grid;place-items:center;margin:auto;box-shadow:0 18px 36px rgba(0,87,255,.3)}
.hub-core strong{display:block;color:#fff;margin-top:14px}
.hub-core p{font-size:11px;color:#bdd3ea;margin-top:7px}
.data-pulse{display:flex;justify-content:center;gap:5px;margin-top:14px}
.data-pulse i{width:6px;height:6px;border-radius:50%;background:var(--xq-cyan);animation:dataPulse 1.4s infinite}
.data-pulse i:nth-child(2){animation-delay:.18s}.data-pulse i:nth-child(3){animation-delay:.36s}
@keyframes dataPulse{0%,100%{opacity:.25;transform:scale(.8)}50%{opacity:1;transform:scale(1.15)}}
.platform-thumbs{display:grid;grid-template-rows:1fr 1fr;gap:12px;height:calc(100% - 48px)}
.management-thumb{border:1px solid #e1e8f0;border-radius:14px;background:#fff;overflow:hidden;padding:12px}
.thumb-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.thumb-toolbar strong{font-size:11px;color:var(--xq-navy)}
.thumb-toolbar span{display:flex;gap:4px}.thumb-toolbar i{width:5px;height:5px;border-radius:50%;background:#d2dce8}
.thumb-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:5px}
.thumb-metric{height:32px;border-radius:6px;background:#f1f5fa;position:relative;overflow:hidden}
.thumb-metric::after{content:"";position:absolute;left:6px;right:30%;bottom:7px;height:5px;border-radius:4px;background:#8bb7ff}
.thumb-table{margin-top:8px;display:grid;gap:4px}.thumb-table i{display:block;height:8px;border-radius:4px;background:linear-gradient(90deg,#edf2f7 0 36%,#d8e8ff 36% 52%,#edf2f7 52%)}
.bi-thumb{position:relative;border-radius:14px;overflow:hidden;background:radial-gradient(circle at 52% 48%,#0d3970,#06162f 70%);padding:12px;color:#fff}
.bi-grid{display:grid;grid-template-columns:.75fr 1.2fr .75fr;gap:8px;height:100%}
.bi-side{display:grid;grid-template-rows:repeat(2,1fr);gap:7px}
.bi-panel{border:1px solid rgba(0,213,255,.24);background:rgba(0,34,80,.55);border-radius:8px;padding:6px;overflow:hidden}
.spark{height:100%;position:relative}
.spark svg{width:100%;height:100%}.spark path{fill:none;stroke:var(--xq-cyan);stroke-width:2;stroke-dasharray:120;stroke-dashoffset:120;animation:lineDraw 4.2s ease-in-out infinite}
@keyframes lineDraw{45%,100%{stroke-dashoffset:0}}
.map-panel{position:relative;border:1px solid rgba(0,213,255,.24);border-radius:9px;background:radial-gradient(circle,rgba(0,87,255,.25),transparent 70%);display:grid;place-items:center;overflow:hidden}
.map-panel svg{width:83%;height:83%;filter:drop-shadow(0 0 8px rgba(0,213,255,.28))}
.map-node{position:absolute;width:5px;height:5px;border-radius:50%;background:#fff;box-shadow:0 0 0 5px rgba(0,213,255,.15);animation:mapPulse 2s infinite}
.map-node.n1{left:43%;top:35%}.map-node.n2{left:58%;top:46%;animation-delay:.5s}.map-node.n3{left:47%;top:60%;animation-delay:1s}
@keyframes mapPulse{50%{box-shadow:0 0 0 10px rgba(0,213,255,0)}}

/* Cooperation shared section */
.cooperation-contact{padding:76px 0;background:#f2f6fa;border-top:1px solid #e0e8f0}
.coop-title{font-size:32px;margin-bottom:26px}
.coop-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
.lead-card,.contact-card{background:#fff;border:1px solid var(--xq-line);border-radius:22px;padding:24px;box-shadow:0 8px 25px rgba(0,33,80,.05)}
.lead-card h3,.contact-card h3{font-size:17px;margin-bottom:16px}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.field label{display:block;font-size:12px;font-weight:650;color:#53667d;margin-bottom:7px}
.field input{width:100%;height:44px;border:1px solid #dbe4ee;border-radius:12px;background:#f7f9fc;color:var(--xq-ink);padding:0 13px;transition:.2s ease}
.field input:focus{background:#fff;border-color:var(--xq-blue);outline:4px solid rgba(0,87,255,.08)}
.form-actions{display:flex;justify-content:flex-end;margin-top:16px}
.form-actions .button{min-width:108px;min-height:44px;padding:10px 18px}
.form-message{font-size:13px;color:#1a7b4b;margin-top:10px;text-align:right;min-height:20px}
.contact-lines{display:grid;gap:10px;margin-bottom:18px}
.contact-line{display:grid;grid-template-columns:88px 1fr;gap:10px;font-size:13px}
.contact-line dt{color:#6a7b90}.contact-line dd{margin:0;color:var(--xq-navy);font-weight:550}
.qr-grid{display:grid;grid-template-columns:repeat(2,112px);gap:16px}
.qr-item{text-align:center}
.qr-box{width:112px;height:112px;border:1px solid #dbe4ee;border-radius:14px;background:#fff;padding:7px;display:grid;place-items:center;overflow:hidden}
.qr-box img{width:100%;height:100%;object-fit:contain}
.qr-item figcaption{font-size:12px;color:#52647a;margin-top:7px}

/* Cooperation page */
.cooperation-hero{padding:82px 0;background:linear-gradient(140deg,#f8fbff,#eef5ff)}
.cooperation-hero-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:center}
.cooperation-hero-img{border-radius:28px;overflow:hidden;box-shadow:var(--xq-shadow);aspect-ratio:1.4/1}
.cooperation-hero-img img{width:100%;height:100%;object-fit:cover}
.requirements-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:38px}
.requirement{padding:22px 18px;border-radius:18px;border:1px solid var(--xq-line);background:#fff;min-height:190px}
.requirement svg{width:28px;height:28px;color:var(--xq-blue)}
.requirement h3{font-size:18px;margin-top:20px}
.requirement p{font-size:13px;margin-top:10px}
.support-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:36px}
.support-card{padding:26px;border-radius:20px;background:linear-gradient(135deg,#071f49,#0a3f80);color:#fff}
.support-card h3{color:#fff;font-size:20px}
.support-card p{color:#c1d2e6;font-size:14px;margin-top:10px}
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:36px}
.process-step{position:relative;padding:24px;border-radius:18px;background:#fff;border:1px solid var(--xq-line)}
.process-step b{font-size:12px;color:var(--xq-blue);letter-spacing:.1em}
.process-step h3{font-size:18px;margin-top:12px}.process-step p{font-size:13px;margin-top:9px}

/* About */
.about-hero{padding:100px 0;background:linear-gradient(135deg,var(--xq-navy),#0a3c78);color:#fff;position:relative;overflow:hidden}
.about-hero::after{content:"";position:absolute;width:520px;height:520px;border-radius:50%;right:-210px;top:-330px;border:1px solid rgba(0,213,255,.22);box-shadow:0 0 0 70px rgba(0,213,255,.04),0 0 0 150px rgba(0,87,255,.04)}
.about-hero h1{color:#fff}.about-hero p{color:#c7d6e8;margin-top:22px;font-size:19px;max-width:720px}
.about-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px;align-items:start}
.about-mark{padding:40px;border-radius:28px;background:linear-gradient(135deg,#eef5ff,#eafcff);display:grid;place-items:center;min-height:380px}
.about-mark img{width:210px}
.fact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:30px}
.fact{padding:22px;border:1px solid var(--xq-line);border-radius:18px;background:#fff}
.fact strong{display:block;color:var(--xq-navy);font-size:20px}.fact span{display:block;color:var(--xq-muted);font-size:13px;margin-top:7px}

/* Modal */
.modal-backdrop{position:fixed;inset:0;z-index:300;background:rgba(0,20,66,.48);backdrop-filter:blur(6px);display:none;align-items:center;justify-content:center;padding:20px}
.modal-backdrop.open{display:flex}
.modal{width:min(460px,100%);border-radius:24px;background:#fff;padding:28px;box-shadow:0 30px 80px rgba(0,20,66,.32)}
.modal h3{font-size:24px}.modal p{margin-top:10px;font-size:14px}
.type-options{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}
.type-option{border:1px solid var(--xq-line-strong);border-radius:16px;padding:18px;background:#fff;text-align:left;color:var(--xq-ink)}
.type-option strong{display:block;color:var(--xq-navy)}.type-option span{display:block;font-size:12px;color:var(--xq-muted);margin-top:4px}
.type-option.selected{border-color:var(--xq-blue);box-shadow:0 0 0 4px rgba(0,87,255,.08);background:#f7faff}
.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}
.modal-actions button{min-height:44px;padding:9px 18px;border-radius:999px;border:1px solid var(--xq-line-strong);background:#fff;color:var(--xq-navy);font-weight:650}
.modal-actions .confirm{background:var(--xq-blue);border-color:var(--xq-blue);color:#fff}
.modal-actions .confirm:disabled{opacity:.45;cursor:not-allowed}

/* Footer */
.site-footer{background:#fff;border-top:1px solid var(--xq-line);padding:18px 0}
.footer-inner{display:flex;justify-content:space-between;gap:24px;align-items:center;font-size:12px;color:#75859a}
.footer-inner a:hover{color:var(--xq-blue)}

/* Responsive */
@media(max-width:1040px){
  .container{width:min(var(--max),calc(100% - 36px))}
  .site-nav{gap:19px}.site-nav a{font-size:14px}
  .hero-inner{grid-template-columns:1fr 1fr;gap:42px;min-height:620px}
  .split{gap:44px}.section-heading{gap:32px}
  .scene-grid{grid-template-columns:1fr 1fr;grid-template-rows:300px 220px 220px}.scene-card:first-child{grid-column:1/3;grid-row:auto}
  .agent-stage{grid-template-columns:1fr 280px}.teacher-app{grid-template-columns:140px 1fr}
  .governance-flow{grid-template-columns:1fr 1fr}.flow-column:last-child{grid-column:1/3}.flow-column:nth-child(2)::after{display:none}
  .requirements-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:820px){
  :root{--header-h:68px}
  .section{padding:72px 0}.section-tight{padding:58px 0}
  .site-header{height:var(--header-h)}
  .menu-toggle{display:grid}
  .site-nav{position:fixed;left:0;right:0;top:var(--header-h);display:none;flex-direction:column;align-items:stretch;gap:4px;padding:18px;background:#fff;border-bottom:1px solid var(--xq-line);box-shadow:0 18px 35px rgba(0,29,75,.12)}
  .site-nav.open{display:flex}.site-nav a{padding:10px 12px;font-size:16px}.nav-cta{justify-content:center;margin-top:6px}
  .hero-inner,.page-hero-grid,.cooperation-hero-grid,.split,.about-grid{grid-template-columns:1fr;gap:40px}
  .hero-inner{padding:70px 0;min-height:auto}.hero-visual{max-width:680px}.floating-card{left:16px;bottom:16px}
  .split.reverse .split-media{order:0}
  .section-heading{grid-template-columns:1fr;gap:14px;align-items:start}
  .cert-grid{grid-template-columns:1fr}.cert-head{align-items:start;flex-direction:column}
  .card-grid{grid-template-columns:1fr 1fr}
  .embodied-layout{grid-template-columns:1fr}.embodied-main{min-height:420px}
  .agent-stage{grid-template-columns:1fr}.teacher-app{min-height:500px}.phone-shell{width:320px;justify-self:center}
  .governance-flow{grid-template-columns:1fr}.flow-column:last-child{grid-column:auto}.flow-column::after{right:50%;top:auto;bottom:-10px;width:2px;height:20px;background:linear-gradient(180deg,var(--xq-blue),var(--xq-cyan));box-shadow:0 18px 0 -6px var(--xq-cyan)}
  .flow-column:nth-child(2)::after{display:block}.flow-column:last-child::after{display:none}
  .coop-grid{grid-template-columns:1fr}.contact-card{order:2}
  .requirements-grid{grid-template-columns:repeat(2,1fr)}
  .support-grid{grid-template-columns:1fr}.process{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .container{width:calc(100% - 28px)}
  .display{font-size:40px}.h2{font-size:32px}.lead{font-size:16px}.section{padding:58px 0}
  .hero-inner{padding:48px 0}.hero-copy .lead{margin-top:18px}.hero-copy .actions{margin-top:26px}.hero-frame{aspect-ratio:1/1}.floating-card{position:relative;left:auto;bottom:auto;margin-top:12px}
  .product-bullets{grid-template-columns:1fr}
  .scene-grid{display:grid;grid-template-columns:1fr;grid-template-rows:none}.scene-card:first-child{grid-column:auto}.scene-card{height:240px}
  .embodied-side{grid-template-columns:1fr}.service-list{grid-column:auto;grid-template-columns:1fr 1fr}.mini-scene img{height:190px}
  .agent-wrap{padding:10px;border-radius:18px}.agent-titlebar{padding:8px 6px 14px;align-items:flex-start;flex-direction:column}.teacher-app{grid-template-columns:1fr;min-height:640px}.teacher-sidebar{display:none}.teacher-main{padding:14px}.metric-row{gap:7px}.metric{padding:10px}.metric strong{font-size:18px}.agent-panel{right:12px;bottom:12px;width:calc(100% - 24px)}.phone-shell{width:100%;max-width:320px}
  .governance-flow{gap:14px}.platform-thumbs{min-height:420px}
  .form-grid{grid-template-columns:1fr}.qr-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.qr-box{width:100%;height:auto;aspect-ratio:1}.contact-line{grid-template-columns:78px 1fr}
  .card-grid{grid-template-columns:1fr}.requirements-grid{grid-template-columns:1fr}.process{grid-template-columns:1fr}
  .cooperation-hero-img{aspect-ratio:1/1}
  .footer-inner{align-items:flex-start;flex-direction:column;gap:8px}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}}