/* ==========================================================
   中国智能网 · 全站视觉系统
   纯静态零依赖 / 深色 AI 科技风 + 亮色主题 / PC·移动·小程序三端
   ========================================================== */
:root{
  --bg:#050914; --bg2:#080f20; --panel:#0d1729; --panel2:#111e34; --panel3:#172741;
  --line:rgba(126,166,220,.15); --line2:rgba(126,190,255,.30);
  --txt:#eef4ff; --txt2:#c2d2ec; --txt3:#8fa3c2;
  --cyan:#22d3ee; --violet:#8b7bff; --blue:#5b8cff; --green:#34d399; --amber:#fbbf24; --red:#fb7185;
  --grad:linear-gradient(120deg,#22d3ee 0%,#5b8cff 48%,#8b7bff 100%);
  --grad2:linear-gradient(120deg,#34d399 0%,#22d3ee 100%);
  --shadow:0 18px 50px rgba(0,0,0,.42);
  --r:16px; --r2:22px;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --nav-bg:rgba(5,9,20,.88); --input-bg:#0b1526; --soft:rgba(34,211,238,.10);
}
:root[data-theme="light"]{
  --bg:#f4f7fc; --bg2:#eaf0f9; --panel:#ffffff; --panel2:#f7faff; --panel3:#edf3fc;
  --line:rgba(28,60,110,.13); --line2:rgba(28,80,150,.28);
  --txt:#0d1b30; --txt2:#3c5271; --txt3:#6b7f9b;
  --cyan:#0891b2; --violet:#6d4ce0; --blue:#2563eb; --green:#059669; --amber:#b45309; --red:#e11d48;
  --grad:linear-gradient(120deg,#0891b2 0%,#2563eb 48%,#6d4ce0 100%);
  --grad2:linear-gradient(120deg,#059669 0%,#0891b2 100%);
  --shadow:0 14px 40px rgba(24,54,100,.12);
  --nav-bg:rgba(255,255,255,.90); --input-bg:#f6f9fe; --soft:rgba(8,145,178,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--txt);font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(1100px 620px at 80% -10%,rgba(34,211,238,.10),transparent 62%),radial-gradient(900px 560px at 2% 10%,rgba(139,123,255,.09),transparent 60%);
  background-attachment:fixed}
:root[data-theme="light"] body{background-image:radial-gradient(1100px 620px at 80% -10%,rgba(37,99,235,.07),transparent 62%),radial-gradient(900px 560px at 2% 10%,rgba(109,76,224,.06),transparent 60%)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
img,svg{max-width:100%}
::selection{background:rgba(34,211,238,.28);color:#fff}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--panel3);border-radius:9px}

/* ---------- 布局 ---------- */
.container{width:100%;max-width:1260px;margin:0 auto;padding:0 26px}
.narrow{max-width:920px}
.section{padding:62px 0;position:relative}
.section.sm{padding:38px 0}
.section.alt{background:linear-gradient(180deg,transparent,var(--soft),transparent);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.grid,.g2,.g3,.g4,.g5,.g6,.g21,.g12{display:grid;gap:16px}
.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)}.g6{grid-template-columns:repeat(6,1fr)}
.g21{grid-template-columns:2fr 1fr}.g12{grid-template-columns:1fr 2fr}
.grid>*,.g2>*,.g3>*,.g4>*,.g5>*,.g6>*,.g21>*,.g12>*{min-width:0}
.flex{display:flex;align-items:center;gap:12px}
.between{display:flex;align-items:center;justify-content:space-between;gap:14px}
.wrap{flex-wrap:wrap}
.mt6{margin-top:6px}.mt10{margin-top:10px}.mt14{margin-top:14px}.mt18{margin-top:18px}.mt24{margin-top:24px}.mt32{margin-top:32px}.mt48{margin-top:48px}
.mb8{margin-bottom:8px}.mb12{margin-bottom:12px}.mb16{margin-bottom:16px}.mb24{margin-bottom:24px}.mb32{margin-bottom:32px}
.tc{text-align:center}.tr{text-align:right}
.hide{display:none!important}
.mono{font-family:var(--mono)}
.muted{color:var(--txt2)}.dim{color:var(--txt3)}
.small{font-size:13px}.tiny{font-size:12px}
.grad-txt{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nowrap{white-space:nowrap}
.center-col{display:flex;flex-direction:column;align-items:center;justify-content:center}

/* ---------- 导航 ---------- */
.nav{position:sticky;top:0;z-index:90;background:var(--nav-bg);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav-in{height:74px;display:flex;align-items:center;gap:22px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:42px;height:42px;border-radius:12px;background:var(--grad);display:grid;place-items:center;box-shadow:0 6px 22px rgba(34,211,238,.28);flex-shrink:0}
.brand-mark svg{width:25px;height:25px}
.brand-txt{display:flex;flex-direction:column;line-height:1.25}
.brand-txt strong{font-size:17px;letter-spacing:.6px}
.brand-domains{margin-top:3px;display:flex;flex-direction:column;gap:0;font-family:var(--mono);font-size:9.5px;letter-spacing:.35px;color:var(--cyan);opacity:.92}
.brand-domains span{display:block}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto;flex-wrap:nowrap}
.nav-menu a{padding:8px 10px;border-radius:9px;font-size:13.5px;color:var(--txt2);white-space:nowrap;transition:.18s}
.nav-menu a:hover,.nav-menu a.on{color:var(--txt);background:var(--soft)}
.nav-menu a.on{box-shadow:inset 0 -2px 0 var(--cyan)}
.nav-cta{display:flex;align-items:center;gap:8px;flex-shrink:0}
.nav-tools{display:flex;align-items:center;gap:6px}
.icon-btn{width:34px;height:34px;border-radius:9px;border:1px solid var(--line);display:grid;place-items:center;color:var(--txt2);font-size:15px;background:var(--panel);transition:.18s}
.icon-btn:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle{display:none;width:36px;height:36px;border-radius:9px;border:1px solid var(--line);color:var(--txt);font-size:18px;background:var(--panel)}
.nav-mobile{display:none;position:fixed;top:74px;left:0;right:0;bottom:0;z-index:85;background:var(--bg);padding:16px 22px 90px;overflow:auto;border-top:1px solid var(--line)}
.nav-mobile a{display:block;padding:12px 14px;border-bottom:1px solid var(--line);font-size:15px;color:var(--txt2)}
.nav-mobile a:hover{color:var(--cyan)}
.nav-mobile .mdom{margin:14px 0 8px;font-family:var(--mono);font-size:11px;color:var(--cyan);letter-spacing:.5px}

/* ---------- 通用组件 ---------- */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:22px;transition:.22s;position:relative;overflow:hidden}
.card:hover{border-color:var(--line2);transform:translateY(-3px);box-shadow:var(--shadow)}
.card.pad-sm{padding:16px}
.card.flat:hover{transform:none;box-shadow:none}
.card.glow{background:linear-gradient(160deg,var(--panel2),var(--panel));border-color:var(--line2)}
.card h3{margin:0 0 8px;font-size:17px;line-height:1.5}
.card p{margin:0;color:var(--txt2);font-size:13.5px;line-height:1.8}
.card .ico{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:20px;background:var(--soft);border:1px solid var(--line2);color:var(--cyan)}
.card .ico.v{color:var(--violet)}.card .ico.g{color:var(--green)}.card .ico.a{color:var(--amber)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:10px 18px;border-radius:10px;font-size:14px;font-weight:600;border:1px solid transparent;transition:.2s;white-space:nowrap}
.btn-primary{background:var(--grad);color:#04121b;box-shadow:0 8px 24px rgba(34,211,238,.22)}
:root[data-theme="light"] .btn-primary{color:#fff}
.btn-primary:hover{filter:brightness(1.1);transform:translateY(-1px)}
.btn-ghost{border-color:var(--line2);color:var(--txt);background:var(--panel)}
.btn-ghost:hover{background:var(--soft);border-color:var(--cyan)}
.btn-soft{background:var(--soft);color:var(--cyan);border-color:var(--line2)}
.btn-sm{padding:7px 13px;font-size:12.5px;border-radius:8px}
.btn-lg{padding:14px 26px;font-size:15.5px;border-radius:12px}
.btn-block{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.tag{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:99px;font-size:11.5px;color:var(--cyan);background:var(--soft);border:1px solid var(--line2);white-space:nowrap}
.tag.v{color:var(--violet)}.tag.g{color:var(--green)}.tag.a{color:var(--amber)}.tag.r{color:var(--red)}
.tag.plain{color:var(--txt3);background:var(--panel2);border-color:var(--line)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11.5px;letter-spacing:1.6px;text-transform:uppercase;color:var(--cyan);margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--grad)}
h1,h2,h3,h4{line-height:1.35}
.h1{font-size:clamp(32px,4.4vw,54px);font-weight:800;letter-spacing:-.5px;margin:0 0 18px}
.h2{font-size:clamp(24px,3vw,34px);font-weight:750;letter-spacing:-.3px;margin:0 0 12px}
.h3{font-size:20px;font-weight:700;margin:0 0 10px}
.lead{font-size:16px;color:var(--txt2);line-height:1.9}
.sec-head{margin-bottom:30px}
.sec-head .lead{max-width:760px}
.divider{height:1px;background:var(--line);margin:26px 0}
.kpi{font-size:clamp(26px,3vw,38px);font-weight:800;font-family:var(--mono);background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.2}
.kpi-lbl{font-size:12.5px;color:var(--txt3);margin-top:4px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-grid .card{text-align:center;padding:20px 14px}
.notice{padding:12px 16px;border-radius:10px;background:var(--soft);border:1px solid var(--line2);font-size:13px;color:var(--txt2)}
.list-clean{list-style:none;padding:0;margin:0}
.list-clean li{position:relative;padding-left:20px;margin:8px 0;color:var(--txt2);font-size:13.5px}
.list-clean li::before{content:"";position:absolute;left:2px;top:10px;width:7px;height:7px;border-radius:2px;background:var(--cyan)}
.checkline{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--txt2);margin:9px 0}
.checkline b{color:var(--green);flex-shrink:0}

/* ---------- 表单 ---------- */
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--txt2);margin-bottom:7px;font-weight:600}
.field label .req{color:var(--red)}
input[type=text],input[type=number],input[type=email],input[type=password],input[type=tel],select,textarea{
  width:100%;padding:10px 13px;border-radius:10px;border:1px solid var(--line2);background:var(--input-bg);color:var(--txt);outline:none;transition:.18s;font-size:14px}
input:focus,select:focus,textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px var(--soft)}
textarea{min-height:96px;resize:vertical;line-height:1.7}
select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--txt3) 50%),linear-gradient(135deg,var(--txt3) 50%,transparent 50%);background-position:calc(100% - 18px) 18px,calc(100% - 13px) 18px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:34px}
.field-hint{font-size:11.5px;color:var(--txt3);margin-top:5px}
.inline-form{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.inline-form input{flex:1;min-width:180px}
.range-row{display:flex;align-items:center;gap:14px}
.range-row input[type=range]{flex:1;accent-color:var(--cyan);height:6px}
.range-val{font-family:var(--mono);font-size:15px;font-weight:700;color:var(--cyan);min-width:76px;text-align:right}
.err{color:var(--red);font-size:12px;margin-top:5px}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--panel)}
table{width:100%;border-collapse:collapse;font-size:13px;min-width:620px}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--panel2);color:var(--txt);font-weight:650;white-space:nowrap;font-size:12.5px}
td{color:var(--txt2)}
tr:last-child td{border-bottom:0}
tbody tr:hover{background:var(--soft)}
td strong{color:var(--txt)}
.pos{color:var(--green);font-weight:600}.neg{color:var(--red);font-weight:600}

/* ---------- Tabs / 折叠 ---------- */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px;border-bottom:1px solid var(--line);padding-bottom:12px}
.tab{padding:8px 16px;border-radius:9px;font-size:13.5px;color:var(--txt2);border:1px solid var(--line);background:var(--panel);transition:.18s;white-space:nowrap}
.tab:hover{color:var(--cyan);border-color:var(--line2)}
.tab.on{background:var(--grad);color:#04121b;font-weight:700;border-color:transparent}
:root[data-theme="light"] .tab.on{color:#fff}
.panel{display:none}.panel.on{display:block}
.acc{border:1px solid var(--line);border-radius:12px;background:var(--panel);margin-bottom:10px;overflow:hidden}
.acc-h{padding:14px 18px;display:flex;justify-content:space-between;align-items:center;gap:12px;cursor:pointer;font-weight:650;font-size:14px}
.acc-h:hover{background:var(--soft)}
.acc-h .arw{color:var(--cyan);transition:.2s}
.acc.open .acc-h .arw{transform:rotate(90deg)}
.acc-b{display:none;padding:0 18px 18px;color:var(--txt2);font-size:13.5px;line-height:1.85}
.acc.open .acc-b{display:block}

/* ---------- 首页 Hero ---------- */
.hero{position:relative;overflow:hidden;padding:76px 0 66px;border-bottom:1px solid var(--line)}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:46px 46px;opacity:.28;mask-image:radial-gradient(ellipse 72% 78% at 72% 40%,#000,transparent 78%);pointer-events:none}
.hero::after{content:"";position:absolute;width:520px;height:520px;right:-120px;top:-160px;border-radius:50%;background:radial-gradient(circle,rgba(139,123,255,.22),transparent 68%);filter:blur(20px);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:46px;align-items:center;position:relative;z-index:1}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:99px;border:1px solid var(--line2);background:var(--soft);font-size:12px;color:var(--cyan);font-family:var(--mono);letter-spacing:.4px}
.hero-domains{margin:24px 0 6px;padding:16px 20px;border-left:3px solid var(--cyan);background:linear-gradient(90deg,var(--soft),transparent);border-radius:0 12px 12px 0;display:inline-block;min-width:250px}
.hero-domains span{display:block;font-family:var(--mono);font-size:16px;letter-spacing:1px;color:var(--txt);line-height:1.9}
.hero-domains span:first-child{color:var(--cyan)}
.hero-domains small{display:block;font-size:11px;color:var(--txt3);letter-spacing:1.6px;font-family:var(--mono);margin-bottom:4px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.hero-mini{display:flex;gap:26px;margin-top:34px;flex-wrap:wrap}
.hero-mini div{font-size:12px;color:var(--txt3)}
.hero-mini b{display:block;font-family:var(--mono);font-size:20px;color:var(--txt);font-weight:700}
.orb{position:relative;width:100%;aspect-ratio:1/1;max-width:430px;margin:0 auto;display:grid;place-items:center}
.orb-ring{position:absolute;border-radius:50%;border:1px solid var(--line2)}
.orb-ring.r1{width:100%;height:100%;animation:spin 30s linear infinite;border-style:dashed;opacity:.6}
.orb-ring.r2{width:74%;height:74%;animation:spin 22s linear infinite reverse;border-color:rgba(139,123,255,.4)}
.orb-ring.r3{width:48%;height:48%;animation:spin 16s linear infinite;border-color:rgba(34,211,238,.5)}
@keyframes spin{to{transform:rotate(360deg)}}
.orb-core{width:38%;aspect-ratio:1;border-radius:28%;background:var(--grad);display:grid;place-items:center;box-shadow:0 0 70px rgba(34,211,238,.36);font-size:34px;color:#04121b;font-weight:800;animation:float 5s ease-in-out infinite}
:root[data-theme="light"] .orb-core{color:#fff}
@keyframes float{0%,100%{transform:translateY(-7px)}50%{transform:translateY(7px)}}
.orb-node{position:absolute;padding:6px 11px;border-radius:9px;background:var(--panel);border:1px solid var(--line2);font-size:11.5px;color:var(--txt2);box-shadow:var(--shadow);white-space:nowrap}
.orb-node.n1{top:4%;left:38%}.orb-node.n2{top:32%;right:-4%}.orb-node.n3{bottom:20%;right:2%}.orb-node.n4{bottom:2%;left:26%}.orb-node.n5{top:34%;left:-6%}

/* ---------- 三层主线 ---------- */
.layer{position:relative;border:1px solid var(--line2);border-radius:var(--r2);padding:26px;background:linear-gradient(150deg,var(--panel2),var(--panel));overflow:hidden}
.layer::after{content:attr(data-step);position:absolute;right:18px;top:2px;font-family:var(--mono);font-size:76px;font-weight:800;color:var(--soft);line-height:1;pointer-events:none}
.layer .lnum{font-family:var(--mono);font-size:11px;letter-spacing:2px;color:var(--cyan)}
.layer h3{font-size:23px;margin:8px 0 10px}
.layer p{color:var(--txt2);font-size:13.5px;min-height:72px}
.layer .lbar{height:4px;border-radius:4px;background:var(--grad);margin:16px 0;width:56px}
.flow-arrow{display:grid;place-items:center;color:var(--cyan);font-size:22px;opacity:.7}

/* ---------- 产业链 ---------- */
.chain-band{border:1px solid var(--line);border-radius:var(--r);padding:18px;background:var(--panel);margin-bottom:14px}
.chain-band .bh{display:flex;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.chain-band .bh .bn{width:34px;height:34px;border-radius:9px;background:var(--grad);color:#04121b;display:grid;place-items:center;font-family:var(--mono);font-weight:800;font-size:13px;flex-shrink:0}
:root[data-theme="light"] .chain-band .bh .bn{color:#fff}
.chain-band .bh h3{margin:0;font-size:18px}
.chain-band .bh .bd{font-size:12.5px;color:var(--txt3)}
.node-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.node{border:1px solid var(--line);border-radius:11px;padding:13px;background:var(--panel2);cursor:pointer;transition:.18s}
.node:hover{border-color:var(--cyan);background:var(--soft)}
.node.on{border-color:var(--cyan);box-shadow:0 0 0 2px var(--soft)}
.node .nt{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:13.5px;font-weight:650}
.node .nd{font-size:11.5px;color:var(--txt3);margin-top:5px;line-height:1.6}
.node-detail{border:1px solid var(--line2);border-radius:var(--r);padding:22px;background:var(--panel);margin-top:14px;min-height:180px}
.node-detail h3{margin:0 0 6px}
.kv{display:grid;grid-template-columns:96px 1fr;gap:8px 14px;font-size:13px;margin-top:12px}
.kv dt{color:var(--cyan);font-weight:650}.kv dd{margin:0;color:var(--txt2)}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}

/* ---------- 进度 / 雷达 / 图表 ---------- */
.progress{height:8px;border-radius:99px;background:var(--panel3);overflow:hidden}
.progress i{display:block;height:100%;background:var(--grad);border-radius:99px;transition:width .5s}
.bar-row{margin:12px 0}
.bar-row .bl{display:flex;justify-content:space-between;font-size:12.5px;margin-bottom:5px;color:var(--txt2)}
.bar-track{height:9px;border-radius:99px;background:var(--panel3);overflow:hidden}
.bar-track i{display:block;height:100%;border-radius:99px;background:var(--grad2);transition:width .6s}
.bar-track i.warn{background:linear-gradient(90deg,var(--amber),var(--red))}
.radar-box{display:grid;place-items:center;background:var(--panel2);border:1px solid var(--line);border-radius:var(--r);padding:10px}
.score-ring{width:170px;height:170px;position:relative;display:grid;place-items:center}
.score-ring svg{position:absolute;inset:0;transform:rotate(-90deg)}
.score-ring .sv{text-align:center;z-index:1}
.score-ring .sv b{display:block;font-family:var(--mono);font-size:42px;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.score-ring .sv span{font-size:11.5px;color:var(--txt3)}

/* ---------- 问答 / 聊天 ---------- */
.chat-box{border:1px solid var(--line);border-radius:var(--r);background:var(--panel);display:flex;flex-direction:column;height:460px;overflow:hidden}
.chat-head{padding:13px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px;background:var(--panel2)}
.chat-dot{width:9px;height:9px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green)}
.chat-body{flex:1;overflow:auto;padding:18px;display:flex;flex-direction:column;gap:14px}
.msg{max-width:86%;padding:12px 15px;border-radius:14px;font-size:13.5px;line-height:1.8;white-space:pre-wrap}
.msg.bot{align-self:flex-start;background:var(--panel2);border:1px solid var(--line);border-bottom-left-radius:4px}
.msg.me{align-self:flex-end;background:var(--grad);color:#04121b;border-bottom-right-radius:4px}
:root[data-theme="light"] .msg.me{color:#fff}
.msg .mh{font-size:11px;color:var(--cyan);font-family:var(--mono);margin-bottom:5px;letter-spacing:.5px}
.msg.me .mh{color:rgba(4,18,27,.65)}
:root[data-theme="light"] .msg.me .mh{color:rgba(255,255,255,.8)}
.msg a{color:var(--cyan);text-decoration:underline}
.chat-input{padding:12px;border-top:1px solid var(--line);display:flex;gap:8px;background:var(--panel2)}
.chat-input input{flex:1}
.quick-q{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.quick-q button{padding:6px 12px;border-radius:99px;border:1px solid var(--line2);font-size:12px;color:var(--txt2);background:var(--panel)}
.quick-q button:hover{color:var(--cyan);border-color:var(--cyan)}

/* ---------- 撮合卡片 ---------- */
.match-card{border:1px solid var(--line);border-radius:14px;padding:18px;background:var(--panel);transition:.2s}
.match-card:hover{border-color:var(--line2)}
.match-score{font-family:var(--mono);font-size:22px;font-weight:800;color:var(--green)}
.match-score.mid{color:var(--amber)}.match-score.low{color:var(--txt3)}
.mrow{border-bottom:1px solid var(--line);padding:13px 0;display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.mrow:last-child{border-bottom:0}
.mrow:first-child{padding-top:0}

/* ---------- 时间轴 / 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;position:relative}
.step{text-align:center;position:relative;padding-top:44px}
.step::before{content:attr(data-n);position:absolute;top:0;left:50%;transform:translateX(-50%);width:32px;height:32px;border-radius:50%;background:var(--panel2);border:1px solid var(--line2);display:grid;place-items:center;font-family:var(--mono);font-size:12px;color:var(--cyan);font-weight:700}
.step:not(:last-child)::after{content:"";position:absolute;top:16px;left:calc(50% + 20px);width:calc(100% - 40px);height:1px;background:var(--line2)}
.step h4{font-size:14px;margin:0 0 5px}
.step p{font-size:12px;color:var(--txt3);margin:0;line-height:1.6}
.timeline{border-left:2px solid var(--line2);padding-left:22px;margin-left:8px}
.tl-item{position:relative;margin-bottom:22px}
.tl-item::before{content:"";position:absolute;left:-28px;top:8px;width:10px;height:10px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px var(--soft)}
.tl-item h4{margin:0 0 4px;font-size:15px}
.tl-item p{margin:0;font-size:13px;color:var(--txt2)}
.tl-item .ty{font-family:var(--mono);font-size:11px;color:var(--cyan);letter-spacing:1px}

/* ---------- 定价 ---------- */
.price-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r2);padding:26px;background:var(--panel);position:relative;transition:.22s}
.price-card:hover{transform:translateY(-4px);border-color:var(--line2)}
.price-card.hot{border-color:var(--cyan);box-shadow:0 0 0 1px var(--cyan),0 20px 50px rgba(34,211,238,.12)}
.price-card .ribbon{position:absolute;top:-11px;left:24px;padding:3px 12px;border-radius:99px;background:var(--grad);color:#04121b;font-size:11px;font-weight:700}
:root[data-theme="light"] .price-card .ribbon{color:#fff}
.price{font-family:var(--mono);font-size:32px;font-weight:800;margin:12px 0 2px}
.price small{font-size:13px;color:var(--txt3);font-weight:400;font-family:inherit}
.price-card ul{margin:18px 0 22px;flex:1}

/* ---------- 手机 / 小程序预览 ---------- */
.phone-stage{display:grid;grid-template-columns:1fr 390px;gap:44px;align-items:start}
.phone{width:340px;max-width:100%;margin:0 auto;border:11px solid #10192b;border-radius:42px;background:var(--bg);box-shadow:0 30px 80px rgba(0,0,0,.5);overflow:hidden;position:relative}
:root[data-theme="light"] .phone{border-color:#243349}
.phone-notch{height:26px;background:#10192b;display:grid;place-items:center}
:root[data-theme="light"] .phone-notch{background:#243349}
.phone-notch i{display:block;width:88px;height:6px;border-radius:99px;background:#2b3a55}
.mp-head{padding:14px 16px 10px;background:var(--panel);border-bottom:1px solid var(--line)}
.mp-head .mt{font-size:16px;font-weight:700}
.mp-head .ms{font-size:11px;color:var(--txt3)}
.mp-body{height:520px;overflow:auto;padding:14px}
.mp-page{display:none}.mp-page.on{display:block}
.mp-tabs{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);background:var(--panel)}
.mp-tabs button{padding:9px 2px 8px;font-size:10.5px;color:var(--txt3);display:grid;place-items:center;gap:2px}
.mp-tabs button.on{color:var(--cyan)}
.mp-tabs button i{font-style:normal;font-size:17px;line-height:1}
.mp-cap{display:grid;place-items:center;text-align:center;padding:10px 3px;border-radius:12px;background:var(--panel2);border:1px solid var(--line)}
.mp-cap b{display:block;font-size:10.5px;line-height:1.35;margin-top:4px;white-space:nowrap;letter-spacing:-.2px}
.mp-cap i{font-style:normal;font-size:19px;color:var(--cyan)}
.mp-bar{height:6px;border-radius:9px;background:var(--panel3);overflow:hidden;margin-top:6px}
.mp-bar i{display:block;height:100%;background:var(--grad)}

/* ---------- 搜索弹层 / Toast / Modal ---------- */
.overlay{position:fixed;inset:0;z-index:120;background:rgba(2,6,14,.72);backdrop-filter:blur(5px);display:none;align-items:flex-start;justify-content:center;padding:12vh 20px 20px}
.overlay.on{display:flex}
.search-box{width:100%;max-width:660px;background:var(--panel);border:1px solid var(--line2);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}
.search-box .si{display:flex;align-items:center;gap:10px;padding:16px 18px;border-bottom:1px solid var(--line)}
.search-box .si input{border:0;background:transparent;font-size:16px;box-shadow:none;padding:0}
.search-res{max-height:52vh;overflow:auto;padding:10px}
.search-res a{display:block;padding:11px 13px;border-radius:10px;border-bottom:1px solid var(--line)}
.search-res a:hover{background:var(--soft)}
.search-res a b{display:block;font-size:14px}
.search-res a span{font-size:12px;color:var(--txt3)}
#toast{position:fixed;left:50%;bottom:34px;transform:translate(-50%,20px);z-index:200;background:var(--panel3);border:1px solid var(--line2);color:var(--txt);padding:11px 20px;border-radius:11px;box-shadow:var(--shadow);font-size:13.5px;opacity:0;pointer-events:none;transition:.25s;max-width:88vw;text-align:center}
#toast.on{opacity:1;transform:translate(-50%,0)}
.modal{position:fixed;inset:0;z-index:130;background:rgba(2,6,14,.7);display:none;align-items:center;justify-content:center;padding:20px}
.modal.on{display:flex}
.modal-in{width:100%;max-width:520px;max-height:86vh;overflow:auto;background:var(--panel);border:1px solid var(--line2);border-radius:18px;padding:24px;box-shadow:var(--shadow)}
.modal-x{float:right;font-size:20px;color:var(--txt3);line-height:1}

/* ---------- 页脚 ---------- */
.footer{border-top:1px solid var(--line);background:var(--bg2);padding:48px 0 22px;margin-top:20px}
.footer .fg{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:34px}
.footer h4{font-size:13.5px;margin:0 0 14px;color:var(--txt)}
.footer a,.footer p{display:block;font-size:12.5px;color:var(--txt3);margin:7px 0}
.footer a:hover{color:var(--cyan)}
.footer .fdom{font-family:var(--mono);font-size:14px;color:var(--cyan);line-height:1.9;letter-spacing:.6px}
.footer .fdom span{display:block}
.footer-bot{border-top:1px solid var(--line);margin-top:32px;padding-top:18px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:11.5px;color:var(--txt3)}
.backtop{position:fixed;right:20px;bottom:22px;z-index:70;width:40px;height:40px;border-radius:12px;background:var(--panel2);border:1px solid var(--line2);color:var(--cyan);display:none;place-items:center;box-shadow:var(--shadow)}
.backtop.on{display:grid}

/* ---------- 响应式 ---------- */
@media(max-width:1100px){
  .nav-menu a{padding:8px 7px;font-size:12.5px}
  .hero-grid{grid-template-columns:1fr .8fr;gap:26px}
  .node-grid{grid-template-columns:repeat(2,1fr)}
  .phone-stage{grid-template-columns:1fr 340px;gap:26px}
}
@media(max-width:900px){
  .nav-menu,.nav-cta{display:none}
  .nav-toggle{display:grid;place-items:center;margin-left:auto}
  .nav-mobile.on{display:block}
  .hero{padding:52px 0 44px}
  .hero-grid{grid-template-columns:1fr}
  .orb{max-width:270px;margin-top:10px}
  .g4,.g5,.g6{grid-template-columns:repeat(2,1fr)}
  .g3,.g21,.g12{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr);row-gap:24px}
  .footer .fg{grid-template-columns:repeat(2,1fr)}
  .phone-stage{grid-template-columns:1fr}
  .phone{margin-top:8px}
  .section{padding:44px 0}
}
@media(max-width:600px){
  .container{padding:0 16px}
  .nav-in{height:64px}
  .nav-mobile{top:64px}
  .brand-mark{width:36px;height:36px}
  .brand-txt strong{font-size:15px}
  .brand-domains{font-size:8.5px}
  .g2,.g3,.g4,.g5,.g6,.g21,.g12,.node-grid{grid-template-columns:1fr}
  .h1{font-size:31px}
  .h2{font-size:24px}
  .hero-domains{min-width:0;width:100%}
  .hero-domains span{font-size:14px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%;min-width:0}
  .hero-mini{gap:16px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .card{padding:18px}
  .layer::after{font-size:56px}
  .kv{grid-template-columns:76px 1fr}
  .chat-box{height:420px}
  .msg{max-width:94%}
  .phone{width:100%;max-width:340px}
  .footer .fg{grid-template-columns:1fr 1fr;gap:20px}
  .footer-bot{flex-direction:column}
  .section{padding:36px 0}
  .table-wrap{margin-left:-2px;margin-right:-2px}
}
@media print{
  .nav,.footer,.backtop,.no-print,.hero::before,.hero::after{display:none!important}
  body{background:#fff;color:#111}
  .card,.node-detail,.table-wrap{break-inside:avoid;border-color:#ccc}
}


/* ZN_EXTRA · interaction controls */
.chips{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.chip{display:inline-flex;align-items:center;justify-content:center;min-height:30px;padding:5px 13px;border:1px solid var(--line2);border-radius:999px;background:var(--panel2);color:var(--txt2);font-family:inherit;font-size:12.5px;line-height:1.35;cursor:pointer;transition:border-color .18s,color .18s,transform .18s,background .18s;white-space:nowrap;-webkit-tap-highlight-color:transparent}
.chip:hover{border-color:var(--cyan);color:var(--txt);transform:translateY(-1px)}
.chip.on{background:var(--grad);border-color:transparent;color:#04121b;font-weight:700;box-shadow:0 4px 18px rgba(34,211,238,.22)}
.chip:disabled{opacity:.5;cursor:not-allowed}
.checkline{display:flex;gap:10px;align-items:flex-start;padding:9px 0;border-bottom:1px dashed var(--line);cursor:pointer;font-size:13.5px;line-height:1.55}
.checkline:last-child{border-bottom:0}
.checkline input{accent-color:var(--cyan);width:16px;height:16px;margin-top:3px;flex:0 0 auto;cursor:pointer}
.checkline span{color:var(--txt2)}
.checkline:hover span{color:var(--txt)}
.range-val{display:flex;justify-content:space-between;align-items:center;margin-top:6px;font-size:12px;color:var(--txt3)}
.range-val b{color:var(--cyan);font-size:15px}
input[type=range]{accent-color:var(--cyan);width:100%}
.flat{box-shadow:none}
.hot{color:var(--amber) !important}
.pos{color:var(--green) !important}
.neg{color:var(--red) !important}
.kv dt{color:var(--txt3);font-size:12px;letter-spacing:.06em;margin-top:12px}
.kv dd{margin:4px 0 0;color:var(--txt);font-size:13.5px;line-height:1.7}
.kv dd .tag{display:inline-block}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--txt3);font-weight:600;font-size:12px;letter-spacing:.05em;background:var(--panel2)}
td{color:var(--txt2)}
tbody tr:hover td{background:rgba(34,211,238,.035)}
tr.hide{display:none}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.stat-grid .kpi{font-size:22px;font-weight:800;color:var(--cyan)}
.stat-grid .kpi-lbl{font-size:11.5px;color:var(--txt3);margin-top:4px}
@media(max-width:600px){
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .chip{font-size:12px;padding:5px 11px}
  th,td{padding:9px 10px;font-size:12.5px}
}