/* ============================================================
   校园资产管理系统 · 展示网站
   纯静态 / 零依赖 / 自适应
   ============================================================ */
:root{
  --bg:#ffffff; --soft:#f5f8fd; --soft2:#eef3fb;
  --ink:#0f1b33; --muted:#5a6b85; --line:#e4eaf4;
  --brand:#3b5bdb; --brand-d:#2f49b0; --brand-l:#6c8bf6;
  --accent:#0ca678; --accent-d:#099268;
  --warn:#e8590c; --danger:#e03131;
  --shadow:0 12px 34px rgba(22,42,84,.10);
  --shadow-sm:0 6px 18px rgba(22,42,84,.08);
  --radius:16px; --radius-sm:11px;
  --maxw:1180px;
  --font:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
section{padding:84px 0}
.muted{color:var(--muted)}
.center{text-align:center}

/* ---------- 顶部导航 ---------- */
header.nav{position:sticky;top:0;z-index:50;backdrop-filter:saturate(180%) blur(14px);
  background:rgba(255,255,255,.82);border-bottom:1px solid var(--line)}
.nav .row{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:18px;letter-spacing:.3px}
.brand .logo{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand-l));
  display:grid;place-items:center;color:#fff;box-shadow:var(--shadow-sm)}
.brand .logo svg{width:21px;height:21px}
.nav nav{display:flex;align-items:center;gap:6px}
.nav nav a{color:var(--muted);font-weight:600;font-size:15px;padding:8px 14px;border-radius:9px;transition:.18s}
.nav nav a:hover{color:var(--brand);background:var(--soft)}
.nav .cta{display:flex;align-items:center;gap:10px}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:15px;
  padding:11px 20px;border-radius:11px;cursor:pointer;border:1px solid transparent;transition:.18s;white-space:nowrap}
.btn svg{width:17px;height:17px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(59,91,219,.28)}
.btn-primary:hover{background:var(--brand-d);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);background:var(--soft)}
.btn-light{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.4)}
.btn-light:hover{background:rgba(255,255,255,.28)}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:10px;width:42px;height:42px;cursor:pointer}
.menu-btn svg{width:22px;height:22px;margin:auto}

/* ---------- Hero ---------- */
.hero{position:relative;padding:96px 0 80px;overflow:hidden}
.hero .bg-blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;z-index:0}
.blob1{width:420px;height:420px;background:#bcd0ff;top:-120px;right:-60px}
.blob2{width:340px;height:340px;background:#b8f0dd;bottom:-140px;left:-80px}
.hero .wrap{position:relative;z-index:1}
.hero .tag{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);
  color:var(--brand);font-weight:700;font-size:13.5px;padding:7px 15px;border-radius:999px;box-shadow:var(--shadow-sm)}
.hero h1{font-size:48px;line-height:1.16;margin:22px 0 18px;letter-spacing:-.5px}
.hero h1 .hl{background:linear-gradient(120deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:18.5px;color:var(--muted);max-width:680px;margin:0 auto 30px}
.hero .acts{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-stats{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:54px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:18px 26px;min-width:150px;
  box-shadow:var(--shadow-sm)}
.stat b{display:block;font-size:30px;font-weight:800;color:var(--brand);line-height:1.1}
.stat span{font-size:13.5px;color:var(--muted)}

.dual-badge{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.dual-badge .chip{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:14px;
  padding:9px 16px;border-radius:999px}
.chip.loc{background:#eaf1ff;color:var(--brand)}
.chip.srv{background:#e6f9f1;color:var(--accent-d)}
.chip svg{width:17px;height:17px}

/* ---------- Section header ---------- */
.sec-head{text-align:center;max-width:760px;margin:0 auto 52px}
.sec-head .eyebrow{color:var(--brand);font-weight:800;font-size:14px;letter-spacing:1.5px;text-transform:uppercase}
.sec-head h2{font-size:36px;margin:12px 0 14px;letter-spacing:-.4px}
.sec-head p{font-size:17px;color:var(--muted)}

/* ---------- 双模式 ---------- */
.modes{background:var(--soft)}
.mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.mode-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow-sm);
  position:relative;overflow:hidden}
.mode-card .ic{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px}
.mode-card.loc .ic{background:#eaf1ff;color:var(--brand)}
.mode-card.srv .ic{background:#e6f9f1;color:var(--accent-d)}
.mode-card h3{font-size:22px;margin-bottom:8px}
.mode-card .sub{color:var(--muted);font-size:15px;margin-bottom:18px}
.mode-card ul{list-style:none;display:flex;flex-direction:column;gap:11px}
.mode-card li{display:flex;gap:10px;font-size:15px;align-items:flex-start}
.mode-card li svg{width:19px;height:19px;flex:0 0 auto;color:var(--accent);margin-top:3px}
.mode-card .ribbon{position:absolute;top:18px;right:-34px;transform:rotate(40deg);background:var(--brand);color:#fff;
  font-size:12px;font-weight:700;padding:5px 40px}
.mode-card.srv .ribbon{background:var(--accent)}

/* ---------- 功能网格 ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);
  transition:.2s}
.feat:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfdbf3}
.feat .fic{width:46px;height:46px;border-radius:12px;background:var(--soft2);display:grid;place-items:center;margin-bottom:16px;color:var(--brand)}
.feat .fic svg{width:24px;height:24px}
.feat h3{font-size:18.5px;margin-bottom:8px}
.feat p{font-size:14.5px;color:var(--muted)}
.feat .pill{display:inline-block;margin-top:14px;font-size:12px;font-weight:700;color:var(--accent-d);
  background:#e6f9f1;padding:4px 11px;border-radius:999px}

/* ---------- 前端效果 / 预览 ---------- */
.preview{background:var(--soft)}
.tabs{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-bottom:34px}
.tab{font-weight:700;font-size:14.5px;padding:10px 18px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--muted);cursor:pointer;transition:.18s}
.tab.active{background:var(--brand);color:#fff;border-color:var(--brand);box-shadow:0 8px 18px rgba(59,91,219,.25)}
.panes{display:grid;grid-template-columns:1fr;gap:0}
.pane{display:none}
.pane.active{display:block;animation:fade .35s ease}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* 浏览器外框 */
.browser{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);overflow:hidden}
.browser .bar{display:flex;align-items:center;gap:7px;padding:11px 15px;background:#f3f6fc;border-bottom:1px solid var(--line)}
.browser .bar .dot{width:11px;height:11px;border-radius:50%}
.browser .bar .u{margin-left:14px;font-size:12.5px;color:var(--muted);background:#fff;border:1px solid var(--line);
  border-radius:7px;padding:4px 12px;flex:1;max-width:460px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.screen{padding:22px;background:var(--soft);max-height:560px;overflow:auto}
.screen::-webkit-scrollbar{width:8px;height:8px}
.screen::-webkit-scrollbar-thumb{background:#c8d4ea;border-radius:8px}

/* --- 看板 mock --- */
.kpi-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:16px}
.kpi{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.kpi .v{font-size:23px;font-weight:800}
.kpi .l{font-size:12.5px;color:var(--muted)}
.kpi.b .v{color:var(--brand)} .kpi.g .v{color:var(--accent-d)} .kpi.o .v{color:var(--warn)}
.dash-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:14px}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px}
.card h4{font-size:14px;margin-bottom:12px;display:flex;justify-content:space-between;align-items:center}
.card h4 .m{font-size:11px;color:var(--muted);font-weight:600}
.legend{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px;font-size:12px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:5px;vertical-align:middle}
.bars{display:flex;align-items:flex-end;gap:14px;height:150px;padding-top:8px}
.bars .b{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;justify-content:flex-end}
.bars .b .col{width:100%;border-radius:6px 6px 0 0;background:linear-gradient(180deg,var(--brand-l),var(--brand))}
.bars .b .lab{font-size:11px;color:var(--muted);text-align:center}
.alert{display:flex;gap:10px;align-items:center;padding:10px 12px;border-radius:10px;background:var(--soft);margin-bottom:9px;font-size:13px}
.alert .lv{font-size:11px;font-weight:800;padding:2px 8px;border-radius:999px}
.alert .lv.warn{background:#ffe8db;color:var(--warn)}
.alert .lv.info{background:#e7efff;color:var(--brand)}

/* --- 资产详情 mock --- */
.det-head{display:flex;justify-content:space-between;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:16px;margin-bottom:14px}
.det-head .nm{font-size:19px;font-weight:800}
.det-head .cd{font-size:12.5px;color:var(--muted);font-family:ui-monospace,monospace}
.badge{font-size:12px;font-weight:800;padding:4px 11px;border-radius:999px}
.badge.use{background:#e6f9f1;color:var(--accent-d)} .badge.repair{background:#fff3bf;color:#a57500}
.badge.recycle{background:#e7efff;color:var(--brand)} .badge.scrap{background:#ffe3e3;color:var(--danger)}
.det-2{display:grid;grid-template-columns:300px 1fr;gap:14px}
.mini-label{background:#fff;border:2px solid var(--ink);border-radius:8px;padding:12px;width:100%}
.mini-label .top{display:flex;justify-content:space-between;font-size:11px;font-weight:800}
.mini-label .qr{margin:8px auto;width:74px;height:74px;background:
  repeating-conic-gradient(#0f1b33 0 25%, #fff 0 50%) 50%/12px 12px;
  border:2px solid #0f1b33;border-radius:4px}
.mini-label .nm2{font-size:13px;font-weight:800;text-align:center}
.mini-label .meta{font-size:10.5px;color:#33415c;text-align:center;margin-top:3px;line-height:1.5}
.mini-label .bc{height:30px;margin-top:8px;background:repeating-linear-gradient(90deg,#0f1b33 0 2px,#fff 2px 4px,#0f1b33 4px 5px,#fff 5px 9px);border-radius:2px}
.mini-label .bcn{font-family:ui-monospace,monospace;font-size:10px;text-align:center;margin-top:2px}
.value-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:14px}
.value-row .c{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px;text-align:center}
.value-row .c .v{font-size:17px;font-weight:800}
.value-row .c .l{font-size:11.5px;color:var(--muted)}
.timeline{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 18px 6px;position:relative}
.timeline h4{font-size:14px;margin-bottom:14px}
.tl{position:relative;padding-left:24px}
.tl::before{content:"";position:absolute;left:7px;top:4px;bottom:8px;width:2px;background:var(--line)}
.tl .it{position:relative;padding-bottom:16px}
.tl .it::before{content:"";position:absolute;left:-21px;top:4px;width:12px;height:12px;border-radius:50%;
  background:var(--brand);border:3px solid #fff;box-shadow:0 0 0 1px var(--brand)}
.tl .it.g::before{background:var(--accent)} .tl .it.o::before{background:var(--warn)} .tl .it.r::before{background:var(--danger)}
.tl .it .ti{font-size:11px;color:var(--muted)}
.tl .it .tt{font-size:13.5px;font-weight:700}
.tl .it .td{font-size:12px;color:var(--muted)}

/* --- 标签打印 mock --- */
.label-stage{display:flex;gap:18px;flex-wrap:wrap;justify-content:center}
.label-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px;box-shadow:var(--shadow-sm)}
.label-card .paper{background:#fff;border:2px dashed #c4cee0;border-radius:6px;padding:12px;width:260px}
.label-card .paper .hd{display:flex;justify-content:space-between;font-size:11px;font-weight:800;color:#0f1b33}
.label-card .paper .qr2{width:84px;height:84px;margin:10px auto;background:
  repeating-conic-gradient(#0f1b33 0 25%, #fff 0 50%) 50%/13px 13px;border:2px solid #0f1b33;border-radius:4px}
.label-card .paper .nm{font-size:14px;font-weight:800;text-align:center;color:#0f1b33}
.label-card .paper .mt{font-size:11px;text-align:center;color:#33415c;margin-top:4px;line-height:1.6}
.label-card .paper .bc2{height:34px;margin-top:10px;background:repeating-linear-gradient(90deg,#0f1b33 0 2px,#fff 2px 4px,#0f1b33 4px 5px,#fff 5px 9px);border-radius:2px}
.label-card .paper .bcn2{font-family:ui-monospace,monospace;font-size:10.5px;text-align:center;margin-top:3px;color:#0f1b33}
.label-card .cap{font-size:11.5px;color:var(--muted);text-align:center;margin-top:10px}

/* --- 同步页 mock --- */
.sync-wrap{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:stretch;margin-bottom:16px}
.vcard{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px}
.vcard.local{border-top:4px solid var(--brand)}
.vcard.srv{border-top:4px solid var(--accent)}
.vcard .vt{display:flex;align-items:center;gap:8px;font-weight:800;font-size:15px;margin-bottom:10px}
.vcard .vt .tag2{font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px;background:var(--soft2);color:var(--muted)}
.vcard ul{list-style:none;font-size:13px;color:var(--muted);display:flex;flex-direction:column;gap:7px}
.vcard ul b{color:var(--ink)}
.varrow{display:grid;place-items:center;font-size:24px;color:var(--brand)}
.conflict{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px}
.conflict h4{font-size:14px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.conflict h4 .cnt{background:var(--warn);color:#fff;font-size:11px;font-weight:800;border-radius:999px;padding:2px 9px}
.cf{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px;border:1px solid var(--line);border-radius:10px;padding:10px}
.cf .opt{border:1px solid var(--line);border-radius:8px;padding:9px 10px;font-size:12px;cursor:pointer}
.cf .opt.sel{border-color:var(--brand);background:#f1f5ff}
.cf .opt .who{font-weight:800;font-size:12px;margin-bottom:3px;display:flex;justify-content:space-between}
.cf .opt .who .t{color:var(--muted);font-weight:600;font-size:10.5px}
.cf .name{font-weight:700;font-size:13px;margin-bottom:8px;display:flex;justify-content:space-between}
.cf .name .id{font-family:ui-monospace,monospace;font-size:10px;color:var(--muted)}

/* ---------- 架构 ---------- */
.arch{background:var(--soft)}
.arch-stage{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow-sm)}
.arch-flow{display:grid;grid-template-columns:repeat(3,1fr);gap:0;align-items:stretch}
.arch-col{display:flex;flex-direction:column;gap:14px;padding:0 14px;position:relative}
.arch-col .at{font-size:13px;font-weight:800;color:var(--muted);text-align:center;letter-spacing:1px;margin-bottom:4px}
.arch-box{border:1px solid var(--line);border-radius:12px;padding:14px;background:var(--soft);text-align:center}
.arch-box.brand{background:linear-gradient(135deg,#eef2ff,#e6f9f1);border-color:#cfdbf3}
.arch-box h5{font-size:15px;margin-bottom:4px}
.arch-box p{font-size:12.5px;color:var(--muted)}
.arch-box .ic{width:38px;height:38px;margin:0 auto 8px;border-radius:10px;display:grid;place-items:center;background:#fff;color:var(--brand);box-shadow:var(--shadow-sm)}
.arch-box .ic svg{width:20px;height:20px}
.arch-arrow{display:grid;place-items:center;color:var(--brand-l);font-size:26px}
.arch-foot{margin-top:22px;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.arch-foot .f{background:var(--soft);border:1px solid var(--line);border-radius:11px;padding:14px;text-align:center}
.arch-foot .f b{display:block;color:var(--brand);font-size:15px;margin-bottom:3px}
.arch-foot .f span{font-size:12.5px;color:var(--muted)}

/* ---------- 部署 ---------- */
.deploy-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:start}
.deploy-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}
.deploy-card h3{font-size:19px;margin-bottom:6px;display:flex;align-items:center;gap:9px}
.deploy-card h3 svg{width:22px;height:22px;color:var(--accent)}
.deploy-card ol{margin:14px 0 0 18px;display:flex;flex-direction:column;gap:10px;font-size:14.5px;color:#33415c}
.deploy-card ol b{color:var(--ink)}
.code{background:#0f1b33;color:#dbe4ff;border-radius:12px;padding:20px;font-family:ui-monospace,monospace;font-size:13.5px;
  line-height:1.8;overflow:auto}
.code .c{color:#7c8db5}
.code .k{color:#8fd0ff}
.code .s{color:#9be7c4}
.note{background:#fff8ec;border:1px solid #ffe1a8;border-radius:12px;padding:16px;font-size:14px;color:#7a5b00;margin-top:16px;
  display:flex;gap:10px}
.note svg{width:20px;height:20px;flex:0 0 auto;color:var(--warn);margin-top:2px}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(120deg,var(--brand),#5b8def 60%,var(--accent));border-radius:22px;
  padding:54px 40px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;background:rgba(255,255,255,.12);
  top:-120px;right:-60px}
.cta-band h2{font-size:32px;margin-bottom:12px}
.cta-band p{font-size:17px;opacity:.92;margin-bottom:26px}
.cta-band .acts{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------- Footer ---------- */
footer{background:#0f1b33;color:#aebdd6;padding:54px 0 30px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:24px}
footer h5{color:#fff;font-size:15px;margin-bottom:14px}
footer a{display:block;color:#aebdd6;font-size:14px;padding:4px 0;transition:.15s}
footer a:hover{color:#fff}
footer .desc{font-size:14px;line-height:1.7;max-width:300px;margin-top:10px}
footer .copy{border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:20px;font-size:13px;text-align:center;color:#7e8fb3}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:.6s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- 方案报价 ---------- */
.pricing{background:var(--soft)}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;position:relative;transition:.2s}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfdbf3}
.price-card.hot{border-color:var(--brand);box-shadow:0 14px 40px rgba(59,91,219,.18)}
.price-card.flag{border-color:var(--accent)}
.price-card .ribbon{position:absolute;top:20px;right:-32px;transform:rotate(38deg);background:var(--brand);color:#fff;
  font-size:12px;font-weight:700;padding:5px 38px;box-shadow:var(--shadow-sm)}
.price-card .ribbon.flag{background:var(--accent)}
.pc-head{margin-bottom:12px}
.pc-name{font-size:21px;font-weight:800}
.pc-tag{display:inline-block;margin-top:7px;font-size:12px;font-weight:700;color:var(--brand-d);background:#eaf1ff;padding:3px 10px;border-radius:999px}
.price-card.flag .pc-tag{color:var(--accent-d);background:#e6f9f1}
.pc-price{display:flex;align-items:baseline;gap:3px;margin:6px 0 4px}
.pc-price .cur{font-size:20px;font-weight:800;color:var(--ink)}
.pc-price b{font-size:44px;font-weight:800;color:var(--ink);line-height:1}
.pc-price .per{font-size:13px;color:var(--muted);margin-left:4px}
.pc-desc{font-size:13.5px;color:var(--muted);min-height:40px;margin-bottom:14px}
.pc-feat{list-style:none;display:flex;flex-direction:column;gap:11px;font-size:14px;margin-bottom:22px;flex:1}
.pc-feat li{color:#33415c;display:flex;gap:8px;align-items:flex-start}
.pc-feat li .ok{color:var(--accent);font-weight:800}
.pc-feat li .no{color:#c4ccdb;font-weight:800}
.pc-feat li.muted{color:var(--muted);font-size:13px;padding-left:26px}
.pc-btn{justify-content:center}
.price-note{margin-top:28px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 22px;font-size:14px;color:var(--muted);text-align:center;box-shadow:var(--shadow-sm)}
.price-note b{color:var(--brand-d)}

/* ---------- CTA 联系 ---------- */
.contact-row{display:flex;gap:24px;justify-content:center;flex-wrap:wrap;margin-top:24px;font-size:14px;opacity:.96}
.contact-row span{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.3);padding:8px 15px;border-radius:999px}

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .price-grid{grid-template-columns:1fr}
  .dash-grid,.det-2,.sync-wrap,.deploy-grid{grid-template-columns:1fr}
  .sync-wrap{grid-template-columns:1fr} .varrow{transform:rotate(90deg)}
  .arch-flow{grid-template-columns:1fr;gap:10px} .arch-arrow{transform:rotate(90deg)}
  .arch-foot{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  section{padding:60px 0}
  .nav nav,.nav .cta .btn-ghost{display:none}
  .menu-btn{display:block}
  .nav.mobile-open nav{display:flex;position:absolute;top:66px;left:0;right:0;background:#fff;flex-direction:column;
    border-bottom:1px solid var(--line);padding:12px}
  .nav.mobile-open nav a{padding:12px}
  .hero h1{font-size:34px} .hero p.lead{font-size:16px}
  .sec-head h2{font-size:27px}
  .mode-grid,.feat-grid,.kpi-row,.value-row{grid-template-columns:1fr}
  .cf{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .cta-band{padding:40px 22px} .cta-band h2{font-size:25px}
}