/* AI房地产 aifdc.cn · 设计系统 v1.0 · 零依赖 */
:root{
  --bg:#f3f6fc;--bg2:#e8eff9;--surface:#ffffff;--surface2:#f7f9fd;--surface3:#eef3fb;
  --text:#101b2f;--muted:#5c6b84;--faint:#8a98ae;--border:#e0e8f3;--border2:#cfdbeb;
  --ink:#0b1b33;--accent:#0c9f89;--accent-soft:#e2f7f2;--blue:#3369e7;--blue-soft:#e9efff;
  --warm:#ee8143;--warm-soft:#fff0e6;--red:#d5484b;--red-soft:#fdecec;--green:#12996b;
  --grad:linear-gradient(120deg,#0c9f89 0%,#3369e7 100%);
  --grad-warm:linear-gradient(120deg,#f7974c,#ee5f56);
  --shadow:0 8px 28px rgba(16,36,70,.07);--shadow-lg:0 20px 60px rgba(16,36,70,.14);
  --radius:16px;--radius-sm:10px;--wrap:1240px;--header-h:70px;
}
html[data-theme="dark"]{
  --bg:#071222;--bg2:#091a30;--surface:#0d1d33;--surface2:#10243d;--surface3:#16304e;
  --text:#e9f2ff;--muted:#9db0cb;--faint:#758ba8;--border:#1d3553;--border2:#2b4a6d;
  --ink:#e9f2ff;--accent:#28d6b8;--accent-soft:#0e3a37;--blue:#6d9bff;--blue-soft:#14294d;
  --warm:#ffab6c;--warm-soft:#3a2718;--red:#ff7d80;--red-soft:#3a1e24;--green:#3ed6a0;
  --shadow:0 8px 28px rgba(0,0,0,.28);--shadow-lg:0 20px 60px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
/* 组件自带 display 会覆盖 UA 的 [hidden]，必须显式保证隐藏元素不拦截点击 */
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
img,svg{max-width:100%}
::selection{background:rgba(12,159,137,.25)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.ambient{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.32}
.orb-a{width:620px;height:620px;top:-260px;left:-160px;background:radial-gradient(circle,#48d9bd,transparent 65%)}
.orb-b{width:720px;height:720px;top:120px;right:-280px;background:radial-gradient(circle,#6a92ff,transparent 65%)}
html[data-theme="dark"] .orb{opacity:.18}
.grid-lines{position:absolute;inset:0;background-image:linear-gradient(rgba(90,130,180,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(90,130,180,.055) 1px,transparent 1px);background-size:46px 46px;mask-image:linear-gradient(#000,transparent 72%)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 22px}
.view{min-height:70vh}
.muted{color:var(--muted)}.faint{color:var(--faint)}
.tiny{font-size:12px}.small{font-size:13px}
.mono{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-variant-numeric:tabular-nums}
.center{text-align:center}.right{text-align:right}
.nowrap{white-space:nowrap}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:60;height:var(--header-h);background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(18px);border-bottom:1px solid var(--border)}
.hdr-inner{max-width:var(--wrap);height:100%;margin:0 auto;padding:0 22px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:var(--surface2);border:1px solid var(--border)}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:18px;letter-spacing:.3px}
.brand-text small{font-size:10px;color:var(--faint);letter-spacing:.5px;margin-top:2px}
.main-nav{display:flex;gap:2px;margin-left:18px;flex:1}
.main-nav a{padding:8px 11px;border-radius:9px;font-size:14px;color:var(--muted);white-space:nowrap;transition:.18s}
.main-nav a:hover{background:var(--surface3);color:var(--text)}
.main-nav a.active{color:var(--accent);background:var(--accent-soft);font-weight:600}
.hdr-actions{display:flex;align-items:center;gap:8px}
.icon-btn{min-width:38px;height:38px;padding:0 9px;display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--border);background:var(--surface2);border-radius:10px;color:var(--muted);font-size:15px;transition:.18s}
.icon-btn:hover{color:var(--accent);border-color:var(--accent)}
.kbd-hint{font-size:10px;color:var(--faint);border:1px solid var(--border2);padding:1px 5px;border-radius:5px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:11px 20px;border:1px solid var(--border);border-radius:11px;background:var(--surface2);color:var(--text);font-size:14px;font-weight:600;transition:.2s;white-space:nowrap;min-height:42px}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-primary{background:var(--ink);border-color:var(--ink);color:#fff}
html[data-theme="dark"] .btn-primary{background:var(--grad);border-color:transparent;color:#04121f}
.btn-accent{background:var(--grad);border-color:transparent;color:#fff}
.btn-ghost{background:transparent}
.btn-sm{padding:7px 14px;min-height:36px;font-size:13px;border-radius:9px}
.btn-lg{padding:14px 28px;font-size:16px;min-height:50px}
.btn-block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.menu-btn{display:none}
.mobile-menu{position:absolute;top:var(--header-h);left:0;right:0;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);padding:12px 18px 18px;display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.mobile-menu a{padding:12px;border-radius:10px;background:var(--surface2);font-weight:600;font-size:14px}
.mobile-menu a.active{background:var(--accent-soft);color:var(--accent)}

/* ---------- Generic sections ---------- */
.sec{padding:72px 0}
.sec.tight{padding:46px 0}
.sec.alt{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.sec-head{max-width:760px;margin:0 auto 40px;text-align:center}
.sec-head.left{text-align:left;margin-left:0}
.eyebrow{display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border:1px solid var(--border2);border-radius:99px;background:var(--surface2);font-size:12px;font-weight:700;letter-spacing:1px;color:var(--accent);margin-bottom:14px}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
h1,h2,h3,h4{line-height:1.25;margin:0 0 12px;letter-spacing:-.3px}
h1{font-size:clamp(34px,5vw,60px);font-weight:800}
h2{font-size:clamp(26px,3.2vw,38px);font-weight:800}
h3{font-size:19px;font-weight:700}
p{margin:0 0 12px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:17px;color:var(--muted);line-height:1.8}
.divider{height:1px;background:var(--border);margin:28px 0}
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.g5{grid-template-columns:repeat(5,1fr)}
.split-layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.9fr);gap:18px;align-items:start}
.tool-layout{grid-template-columns:minmax(0,1.65fr) minmax(260px,.85fr)}
.apps-layout{grid-template-columns:minmax(280px,.8fr) minmax(0,1.2fr);gap:26px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:.22s}
.card.hover:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--border2)}
.card.flat{box-shadow:none;background:var(--surface2)}
.card.pad-sm{padding:16px}
.card.grad{background:var(--grad);color:#fff;border:none}
.card.grad .muted,.card.grad small{color:rgba(255,255,255,.8)}
.card-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:21px;background:var(--accent-soft);color:var(--accent);margin-bottom:14px}
.card-icon.blue{background:var(--blue-soft);color:var(--blue)}
.card-icon.warm{background:var(--warm-soft);color:var(--warm)}
.card h3{margin-bottom:8px}
.card p{color:var(--muted);font-size:14px;margin:0}
.chip{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:99px;background:var(--surface3);border:1px solid var(--border);font-size:12px;color:var(--muted);white-space:nowrap}
.chip.a{background:var(--accent-soft);color:var(--accent);border-color:transparent}
.chip.b{background:var(--blue-soft);color:var(--blue);border-color:transparent}
.chip.w{background:var(--warm-soft);color:var(--warm);border-color:transparent}
.chip.r{background:var(--red-soft);color:var(--red);border-color:transparent}
.chip.g{background:rgba(18,153,107,.12);color:var(--green);border-color:transparent}
.tag-list{display:flex;flex-wrap:wrap;gap:7px}
.badge-num{font:800 28px/1 ui-monospace,monospace;color:var(--accent);letter-spacing:-1px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:18px}
.stat b{display:block;font-size:26px;font-weight:800;letter-spacing:-1px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:12px;color:var(--muted)}

/* ---------- Hero ---------- */
.hero{padding:64px 0 60px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:44px;align-items:center}
.hero h1{margin:16px 0 20px}
.hero .lead{max-width:600px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 22px}
.hero-proof{display:flex;flex-wrap:wrap;gap:20px;align-items:center;font-size:13px;color:var(--muted)}
.hero-proof b{color:var(--text);font-size:16px}
.hero-visual{position:relative}
.ai-console{background:var(--surface);border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow-lg);overflow:hidden}
.console-bar{display:flex;align-items:center;gap:7px;padding:13px 16px;border-bottom:1px solid var(--border);background:var(--surface2)}
.console-bar i{width:9px;height:9px;border-radius:50%;background:#ff6b6b;display:block}
.console-bar i:nth-child(2){background:#ffc65c}.console-bar i:nth-child(3){background:#41cf8b}
.console-bar span{margin-left:auto;font-size:11px;color:var(--faint);font-family:ui-monospace,monospace}
.console-body{padding:20px}
.console-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.console-title b{font-size:14px}.console-title small{font-size:11px;color:var(--accent)}
.flow-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:16px}
.flow-node{border:1px solid var(--border);border-radius:10px;padding:10px 8px;text-align:center;background:var(--surface2);font-size:11px}
.flow-node b{display:block;font-size:13px;margin-bottom:2px;color:var(--accent)}
.console-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:16px}
.console-metrics div{background:var(--surface2);border-radius:10px;padding:10px;text-align:center}
.console-metrics b{display:block;font:800 19px/1.2 ui-monospace,monospace}
.console-metrics small{font-size:10px;color:var(--faint)}
.spark{width:100%;height:76px;display:block}
.console-log{margin-top:12px;padding:10px 12px;background:var(--accent-soft);border-radius:9px;font-size:11.5px;color:var(--accent);display:flex;gap:8px;align-items:flex-start}
.console-log .blink{animation:blink 1.4s infinite}
@keyframes blink{50%{opacity:.25}}
.float-badge{position:absolute;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-lg);border-radius:12px;padding:9px 13px;font-size:12px;display:flex;gap:8px;align-items:center;animation:float 4s ease-in-out infinite}
.float-badge.f1{top:-16px;right:-12px}.float-badge.f2{bottom:-22px;left:-22px;animation-delay:1.5s}
.float-badge b{color:var(--accent)}
@keyframes float{50%{transform:translateY(-8px)}}

/* ---------- Chain ---------- */
.chain-wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;position:relative}
.chain-stage{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;position:relative;overflow:hidden}
.chain-stage:before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:var(--grad)}
.chain-stage.s2:before{background:linear-gradient(90deg,#3369e7,#8b5cf6)}
.chain-stage.s3:before{background:linear-gradient(90deg,#f7974c,#ee5f56)}
.chain-stage-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.chain-stage-head b{font-size:17px}
.chain-node{border:1px solid var(--border);border-radius:11px;padding:12px;margin-bottom:9px;background:var(--surface2);cursor:pointer;transition:.18s}
.chain-node:hover{border-color:var(--accent);transform:translateX(3px)}
.chain-node .cn-top{display:flex;justify-content:space-between;gap:8px;align-items:center;font-size:13.5px;font-weight:700}
.chain-node .cn-desc{font-size:12px;color:var(--muted);margin-top:4px;display:none}
.chain-node.open .cn-desc{display:block}
.chain-node .cn-tools{display:flex;flex-wrap:wrap;gap:5px;margin-top:9px}
.chain-arrow{display:none}

/* ---------- Tool cards / forms ---------- */
.tool-card{display:flex;flex-direction:column;gap:10px;min-height:190px;cursor:pointer}
.tool-card .tc-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.tool-card .tc-id{font:700 11px/1 ui-monospace,monospace;color:var(--faint);letter-spacing:1px}
.tool-card h3{font-size:16px;margin:0}
.fav-btn{border:none;background:transparent;color:var(--faint);font-size:17px;padding:2px 5px}
.fav-btn.on{color:var(--warm)}
.tool-card .tc-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--faint)}
.filters{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:22px}
.filter-btn{padding:7px 14px;border:1px solid var(--border);border-radius:99px;background:var(--surface);font-size:13px;color:var(--muted);min-height:36px}
.filter-btn.on{background:var(--ink);color:#fff;border-color:var(--ink)}
html[data-theme="dark"] .filter-btn.on{background:var(--grad);color:#04121f;border-color:transparent}
.search-field{flex:1;min-width:190px;display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:0 12px;height:38px}
.search-field input{border:none;background:transparent;outline:none;width:100%}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:600;color:var(--muted)}
.field .hint{font-size:11px;color:var(--faint)}
.field input,.field select,.field textarea{width:100%;padding:10px 12px;border:1px solid var(--border2);border-radius:10px;background:var(--surface);outline:none;transition:.18s;min-height:42px}
.field textarea{min-height:88px;resize:vertical;line-height:1.6}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.range-row{display:flex;align-items:center;gap:12px}
.range-row input[type=range]{flex:1;min-height:auto;padding:0;accent-color:var(--accent);border:none;box-shadow:none}
.range-row output{min-width:78px;text-align:right;font-weight:700;font-family:ui-monospace,monospace;color:var(--accent)}
.checkline{display:flex;flex-wrap:wrap;gap:8px}
.checkline label{display:inline-flex;align-items:center;gap:7px;padding:8px 12px;border:1px solid var(--border);border-radius:9px;background:var(--surface2);font-size:13px;cursor:pointer;min-height:40px}
.checkline input{accent-color:var(--accent);width:16px;height:16px}
.form-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.result-card{margin-top:20px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);padding:22px;animation:fadeUp .35s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.result-head{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--border)}
.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:18px}
.metric{background:var(--surface2);border:1px solid var(--border);border-radius:12px;padding:14px}
.metric small{font-size:11.5px;color:var(--muted);display:block}
.metric b{display:block;font:800 24px/1.3 ui-monospace,monospace;letter-spacing:-1px;margin-top:4px}
.metric.positive b{color:var(--green)}.metric.negative b{color:var(--red)}.metric.primary b{color:var(--accent)}
.metric em{font-style:normal;font-size:11px;color:var(--faint)}
.notice{background:var(--warm-soft);border-left:3px solid var(--warm);padding:11px 14px;border-radius:0 9px 9px 0;font-size:12.5px;color:var(--muted);margin-top:16px}
.notice.b{background:var(--blue-soft);border-color:var(--blue)}
.result-list{display:grid;gap:9px}
.result-row{display:flex;justify-content:space-between;gap:14px;padding:11px 14px;border:1px solid var(--border);border-radius:10px;background:var(--surface2);font-size:13.5px;align-items:center}
.result-row b{font-family:ui-monospace,monospace;white-space:nowrap}
.bar-track{height:8px;border-radius:99px;background:var(--surface3);overflow:hidden;margin-top:7px}
.bar-fill{height:100%;border-radius:99px;background:var(--grad);transition:width .6s}
.bar-fill.warm{background:var(--grad-warm)}
.bar-fill.red{background:var(--red)}
.score-ring{display:grid;place-items:center;width:128px;height:128px;border-radius:50%;position:relative;flex:0 0 auto}
.score-ring .inner{position:absolute;inset:12px;border-radius:50%;background:var(--surface);display:grid;place-items:center;text-align:center}
.score-ring .inner b{font:800 30px/1 ui-monospace,monospace;color:var(--accent)}
.score-ring .inner small{font-size:11px;color:var(--muted);display:block;margin-top:4px}
.score-layout{display:flex;gap:22px;align-items:center;flex-wrap:wrap}
.gauge-wrap{flex:1;min-width:220px}
.table{width:100%;border-collapse:collapse;font-size:13px}
.table th,.table td{padding:10px 12px;border-bottom:1px solid var(--border);text-align:left}
.table th{background:var(--surface2);font-size:12px;color:var(--muted);font-weight:700;white-space:nowrap}
.table td b{font-family:ui-monospace,monospace}
.table tr:hover td{background:var(--surface2)}
.table-scroll{overflow-x:auto;border:1px solid var(--border);border-radius:12px}
.copy-box{background:var(--surface2);border:1px solid var(--border);border-radius:11px;padding:15px;white-space:pre-wrap;line-height:1.75;font-size:14px;position:relative}
.copy-box.dark{background:#07182a;color:#d9f2ff;border-color:#1d3553}

/* ---------- Tabs / timeline / steps ---------- */
.tabs{display:flex;gap:6px;flex-wrap:wrap;border-bottom:1px solid var(--border);margin-bottom:22px}
.tab{padding:10px 16px;border:none;background:transparent;color:var(--muted);font-weight:600;font-size:14px;border-bottom:2px solid transparent;margin-bottom:-1px;min-height:42px}
.tab.on{color:var(--accent);border-bottom-color:var(--accent)}
.timeline{position:relative;padding-left:26px}
.timeline:before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--border2)}
.tl-item{position:relative;padding-bottom:20px}
.tl-item:before{content:"";position:absolute;left:-23px;top:5px;width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.tl-item b{font-size:14px}.tl-item p{font-size:13px;color:var(--muted);margin:3px 0 0}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;counter-reset:step}
.step{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:18px;position:relative}
.step:before{counter-increment:step;content:"0" counter(step);display:block;font:800 22px/1 ui-monospace,monospace;color:var(--accent);margin-bottom:10px}
.step b{display:block;margin-bottom:5px}.step p{font-size:12.5px;margin:0}

/* ---------- Pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.price-card{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:24px;display:flex;flex-direction:column;position:relative}
.price-card.featured{border:2px solid var(--accent);box-shadow:var(--shadow-lg);transform:translateY(-6px)}
.price-card .ribbon{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;padding:4px 14px;border-radius:99px;font-size:11px;font-weight:700;white-space:nowrap}
.price-card h3{font-size:18px;margin:0}
.price-card .price{font:800 34px/1.2 ui-monospace,monospace;letter-spacing:-1.5px;margin:14px 0 4px}
.price-card .price small{font:500 13px/1 sans-serif;color:var(--faint)}
.price-card ul{list-style:none;padding:0;margin:18px 0 22px;flex:1;display:grid;gap:9px;align-content:start}
.price-card li{font-size:13px;color:var(--muted);display:flex;gap:8px;align-items:flex-start}
.price-card li:before{content:"✓";color:var(--accent);font-weight:800}
.toggle{display:inline-flex;background:var(--surface2);border:1px solid var(--border);border-radius:99px;padding:4px}
.toggle button{border:none;background:transparent;padding:7px 16px;border-radius:99px;font-size:13px;font-weight:600;color:var(--muted);min-height:34px}
.toggle button.on{background:var(--ink);color:#fff}
html[data-theme="dark"] .toggle button.on{background:var(--grad);color:#04121f}

/* ---------- Market / lists ---------- */
.list-item{background:var(--surface);border:1px solid var(--border);border-radius:13px;padding:16px;display:flex;gap:14px;align-items:flex-start;transition:.18s}
.list-item:hover{border-color:var(--accent)}
.li-avatar{width:40px;height:40px;border-radius:11px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-weight:800;flex:0 0 auto}
.li-body{flex:1;min-width:0}
.li-body b{font-size:14.5px}
.li-body p{font-size:12.5px;color:var(--muted);margin:4px 0 0}
.li-meta{display:flex;flex-wrap:wrap;gap:7px;margin-top:9px}
.empty{padding:46px 20px;text-align:center;color:var(--muted);border:1px dashed var(--border2);border-radius:14px;background:var(--surface2)}
.empty b{display:block;color:var(--text);margin-bottom:6px}

/* ---------- Insight charts ---------- */
.chart-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.chart-box h3{font-size:16px}
.chart-svg{width:100%;height:230px;display:block}
.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-top:10px}
.legend i{width:10px;height:10px;border-radius:3px;display:inline-block;margin-right:5px}
.news-item{padding:14px 0;border-bottom:1px solid var(--border)}
.news-item:last-child{border:none}
.news-item .nmeta{font-size:11px;color:var(--faint);margin-bottom:5px}
.news-item b{font-size:14px;display:block;line-height:1.5}
.news-item p{font-size:12.5px;color:var(--muted);margin:5px 0 0}

/* ---------- App preview ---------- */
.phone-frame{width:290px;height:570px;border:10px solid #13263f;border-radius:38px;background:var(--surface2);overflow:hidden;box-shadow:var(--shadow-lg);position:relative;margin:0 auto}
.phone-notch{position:absolute;top:0;left:50%;transform:translateX(-50%);width:110px;height:20px;background:#13263f;border-radius:0 0 14px 14px;z-index:3}
.phone-screen{height:100%;overflow-y:auto;background:var(--bg);padding:0 0 16px}
.mp-hero{background:var(--grad);color:#fff;padding:32px 16px 20px}
.mp-hero b{font-size:19px}.mp-hero p{font-size:11px;opacity:.85;margin:4px 0 0}
.mp-search{background:#fff;border-radius:99px;padding:9px 13px;font-size:11px;color:#8a98ae;margin:12px 14px -22px;position:relative;z-index:2;box-shadow:var(--shadow)}
.mp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:34px 12px 12px}
.mp-grid div{text-align:center;font-size:10px;background:var(--surface);border-radius:10px;padding:9px 3px;border:1px solid var(--border)}
.mp-grid div i{display:block;font-style:normal;font-size:19px;margin-bottom:4px}
.mp-card{margin:0 12px 10px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:11px;font-size:11px}
.mp-tabbar{position:absolute;bottom:0;left:0;right:0;height:50px;background:var(--surface);border-top:1px solid var(--border);display:grid;grid-template-columns:repeat(5,1fr);font-size:9px;text-align:center;align-items:center;color:var(--muted)}
.mp-tabbar span.on{color:var(--accent);font-weight:700}
.mp-tabbar i{display:block;font-style:normal;font-size:15px}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#c6d4e8;padding:52px 0 24px;margin-top:40px}
html[data-theme="dark"] .site-footer{background:#06101e;border-top:1px solid var(--border)}
.foot-grid{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:28px;padding-bottom:32px}
.site-footer h4{color:#fff;font-size:14px;margin-bottom:14px}
.site-footer a{display:block;font-size:13px;padding:4px 0;color:#a9bcd6}
.site-footer a:hover{color:#3ad6b8}
.site-footer p{font-size:13px;color:#94a9c6;max-width:320px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12px;color:#8299b8}

/* ---------- Overlays ---------- */
.ai-fab{position:fixed;right:22px;bottom:22px;z-index:70;border:none;border-radius:99px;background:var(--grad);color:#fff;padding:12px 18px;display:flex;align-items:center;gap:8px;font-weight:700;font-size:14px;box-shadow:0 12px 32px rgba(20,110,160,.35);min-height:48px}
.ai-fab:hover{transform:translateY(-2px)}
.fab-pulse{width:8px;height:8px;border-radius:50%;background:#8fffe6;box-shadow:0 0 0 5px rgba(143,255,230,.25);animation:blink 1.8s infinite}
.ai-panel{position:fixed;right:22px;bottom:82px;width:376px;max-width:calc(100vw - 30px);height:520px;max-height:calc(100vh - 110px);z-index:75;background:var(--surface);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow-lg);display:flex;flex-direction:column;overflow:hidden;animation:fadeUp .25s ease}
.ai-head{display:flex;align-items:center;gap:10px;padding:13px 14px;border-bottom:1px solid var(--border);background:var(--surface2)}
.ai-head b{font-size:14px;display:block}.ai-head small{font-size:11px;color:var(--faint)}
.ai-head .icon-btn{margin-left:auto;border:none;background:transparent}
.ai-avatar{width:36px;height:36px;border-radius:11px;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:800;font-size:13px}
.ai-body{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}
.msg{max-width:88%;padding:10px 13px;border-radius:13px;font-size:13.5px;line-height:1.65;white-space:pre-wrap}
.msg.bot{background:var(--surface2);border:1px solid var(--border);align-self:flex-start;border-bottom-left-radius:4px}
.msg.user{background:var(--grad);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.msg a{color:var(--accent);text-decoration:underline}
.ai-quick{display:flex;gap:6px;overflow-x:auto;padding:8px 12px;border-top:1px solid var(--border);scrollbar-width:none}
.ai-quick button{border:1px solid var(--border);background:var(--surface2);border-radius:99px;padding:6px 11px;font-size:11.5px;white-space:nowrap;color:var(--muted);min-height:32px}
.ai-quick button:hover{border-color:var(--accent);color:var(--accent)}
.ai-input{display:flex;gap:8px;padding:10px 12px;border-top:1px solid var(--border)}
.ai-input input{flex:1;border:1px solid var(--border2);border-radius:9px;padding:9px 11px;background:var(--surface);outline:none;font-size:13px}
.ai-input button{border:none;background:var(--grad);color:#fff;width:40px;border-radius:9px}
.cmd-mask{position:fixed;inset:0;z-index:90;background:rgba(6,16,30,.55);backdrop-filter:blur(4px);display:flex;justify-content:center;align-items:flex-start;padding-top:12vh}
.cmd-box{width:min(640px,calc(100vw - 32px));background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-lg);overflow:hidden}
.cmd-input{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid var(--border)}
.cmd-input input{flex:1;border:none;background:transparent;outline:none;font-size:15px}
.cmd-input kbd{font-size:10px;color:var(--faint);border:1px solid var(--border);padding:2px 6px;border-radius:5px}
.cmd-list{max-height:380px;overflow-y:auto;padding:8px}
.cmd-group{font-size:11px;color:var(--faint);padding:9px 10px 5px;font-weight:700;letter-spacing:.5px}
.cmd-item{display:flex;gap:11px;align-items:center;padding:10px 12px;border-radius:9px;cursor:pointer;font-size:14px}
.cmd-item:hover,.cmd-item.sel{background:var(--accent-soft);color:var(--accent)}
.cmd-item span:last-child{margin-left:auto;font-size:11px;color:var(--faint)}
.modal-mask{position:fixed;inset:0;z-index:95;background:rgba(6,16,30,.58);display:flex;align-items:center;justify-content:center;padding:16px;backdrop-filter:blur(3px)}
.modal{width:min(460px,100%);background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:24px;box-shadow:var(--shadow-lg);max-height:90vh;overflow-y:auto;animation:fadeUp .22s ease}
.modal h3{margin-bottom:6px}
.modal .close{float:right;border:none;background:transparent;font-size:20px;color:var(--faint);line-height:1}
.toast-wrap{position:fixed;top:84px;right:20px;z-index:120;display:flex;flex-direction:column;gap:8px}
.toast{background:var(--ink);color:#fff;padding:11px 16px;border-radius:10px;font-size:13px;box-shadow:var(--shadow-lg);animation:fadeUp .2s ease;max-width:330px}
html[data-theme="dark"] .toast{background:var(--surface3);border:1px solid var(--border2)}
.toast.ok{border-left:3px solid #3ad6b8}.toast.warn{border-left:3px solid #ffab6c}
.mobile-tabbar{display:none}

/* ---------- Responsive ---------- */
@media(max-width:1100px){
  .main-nav a{padding:8px 7px;font-size:13px}
  .g4,.price-grid{grid-template-columns:repeat(2,1fr)}
  .g5{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-visual{max-width:560px;margin:0 auto;width:100%}
  .chain-wrap{grid-template-columns:1fr}
  .g3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .main-nav{display:none}
  .menu-btn{display:inline-flex}
  .hdr-actions .kbd-hint{display:none}
}
@media(max-width:640px){
  :root{--header-h:60px}
  body{font-size:14px}
  .wrap{padding:0 15px}
  .hdr-inner{padding:0 14px;gap:8px}
  .brand-text small{display:none}
  .brand-text b{font-size:16px}
  .brand-mark{width:34px;height:34px}
  .hdr-actions #headerUserBtn{display:none}
  .hdr-actions .icon-btn{min-width:34px;height:34px;padding:0 7px}
  .sec{padding:48px 0}.sec.tight{padding:32px 0}
  .sec-head{margin-bottom:28px}
  h1{font-size:32px}h2{font-size:25px}
  .hero{padding:38px 0 40px}.hero .lead{font-size:15px}
  .hero-cta .btn{flex:1 1 calc(50% - 6px);min-width:0;justify-content:center;padding:14px 10px}
  .hero-cta .btn:last-child{flex:1 1 100%}
  .hero-cta .btn-ghost{background:var(--surface2)}
  .g2,.g3,.g4,.g5,.price-grid,.stat-grid,.form-grid,.steps,.foot-grid,.split-layout{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .g3.keep2,.g4.keep2{grid-template-columns:repeat(2,1fr)}
  .card{padding:17px}
  .float-badge{display:none}
  .mobile-tabbar{display:grid;position:fixed;bottom:0;left:0;right:0;z-index:65;height:62px;grid-template-columns:repeat(5,1fr);background:color-mix(in srgb,var(--surface) 94%,transparent);backdrop-filter:blur(14px);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom)}
  .mobile-tabbar a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:10.5px;color:var(--faint)}
  .mobile-tabbar a i{font-style:normal;font-size:19px;line-height:1}
  .mobile-tabbar a.active{color:var(--accent);font-weight:700}
  body{padding-bottom:70px}
  .site-footer{margin-bottom:8px;padding:38px 0 20px}
  .ai-fab{right:14px;bottom:76px;width:50px;height:50px;min-height:50px;padding:0;border-radius:50%;justify-content:center}
  .ai-fab .fab-pulse,.ai-fab>span:not(.fab-pulse){display:none}
  .ai-panel{right:10px;bottom:138px;width:calc(100vw - 20px);height:min(490px,calc(100vh - 170px))}
  .toast-wrap{top:70px;right:12px;left:12px}
  .toast{max-width:none}
  .mobile-menu{grid-template-columns:repeat(2,1fr)}
  .table th,.table td{padding:9px 10px;font-size:12px;white-space:nowrap}
  .phone-frame{transform:scale(.92);transform-origin:top center}
  .result-card{padding:16px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metric b{font-size:20px}
  .cmd-mask{padding-top:8vh}
}
@media print{.site-header,.site-footer,.ai-fab,.ai-panel,.sf-wrap,.sf-panel,.sf-chatbox,.sf-wechat-pop,.mobile-tabbar,.ambient,.form-actions,.filters{display:none!important}body{background:#fff}.card,.result-card{box-shadow:none;border:1px solid #ccc}}

/* FAQ · 首页问答精选（同时支撑 GEO 与悬浮客服知识库） */
.faq-wrap{display:grid;gap:12px;max-width:880px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:14px;background:var(--surface);overflow:hidden;transition:.18s}
.faq-item:hover{border-color:var(--accent)}
.faq-q{display:flex;gap:8px;align-items:baseline;padding:15px 18px;font-weight:700;font-size:15px;color:var(--text);cursor:default}
.faq-q b{color:var(--accent);flex:0 0 auto}
.faq-a{padding:0 18px 16px;color:var(--muted);font-size:14px;line-height:1.75;border-top:1px dashed var(--border2);padding-top:14px;margin-top:2px}
.faq-item:last-child{margin-bottom:0}

/* 会员登录 / 注册 双 Tab */
.auth-tabs{display:flex;gap:6px;background:var(--surface2);border:1px solid var(--border);border-radius:12px;padding:5px;max-width:320px}
.auth-tab{flex:1;border:none;background:transparent;color:var(--muted);font-size:14px;font-weight:600;padding:9px 0;border-radius:9px;cursor:pointer;transition:.16s}
.auth-tab.on{background:var(--grad);color:#fff;box-shadow:0 6px 16px rgba(20,110,160,.28)}

/* GEO · AI 搜索可见性体检 */
.geo-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;align-items:start}
.geo-score-card{grid-column:1/-1;display:flex;gap:30px;align-items:center;flex-wrap:wrap}
.geo-ring{position:relative;width:128px;height:128px;flex:0 0 auto}
.geo-ring-in{position:absolute;inset:0;display:grid;place-items:center;text-align:center}
.geo-ring-in b{display:block;font-size:32px;font-weight:800;line-height:1;color:var(--text)}
.geo-ring-in small{display:block;font-size:12px;color:var(--muted);margin-top:5px}
.geo-score-txt{flex:1;min-width:240px}
.geo-score-txt h3{font-size:19px;margin-bottom:8px}
.geo-score-txt p{line-height:1.75;margin:0}
.geo-legend{display:flex;gap:8px;margin-top:14px}
.geo-checks,.geo-deployed{min-width:0}
.geo-item{display:flex;gap:10px;align-items:flex-start;padding:9px 0;border-bottom:1px dashed var(--border2)}
.geo-item:last-child{border-bottom:none}
.geo-dot{width:22px;height:22px;border-radius:7px;display:grid;place-items:center;flex:0 0 auto;font-size:12px;font-weight:800;margin-top:1px}
.geo-item.pass .geo-dot{background:var(--accent-soft);color:var(--accent)}
.geo-item.todo .geo-dot{background:var(--warm-soft);color:var(--warm)}
.geo-item b{font-size:13.5px;color:var(--text)}
.geo-item small{display:block;color:var(--muted);font-size:11.5px;margin-top:2px;line-height:1.5}
.geo-dep{display:flex;flex-direction:column;gap:3px;padding:9px 0;border-bottom:1px dashed var(--border2)}
.geo-dep b{font-size:13.5px;color:var(--accent)}
.geo-dep span{font-size:12px;color:var(--muted);line-height:1.6}
.geo-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
@media(max-width:900px){.geo-grid{grid-template-columns:1fr}.geo-score-card{grid-column:auto}}