/* =========================================================================
   官网GEO智能体 — 设计系统 (纯前端 / 零外部依赖 / 断网可用)
   主题：浅色商务风，靛蓝主色 + 紫调渐变强调
   ========================================================================= */
:root{
  --brand:#2d5bff;
  --brand-600:#1e47e0;
  --brand-700:#173bbd;
  --accent:#7c3aed;
  --grad:linear-gradient(120deg,#2d5bff 0%,#7c3aed 100%);
  --ink:#0f172a;
  --ink-2:#334155;
  --muted:#64748b;
  --muted-2:#94a3b8;
  --line:#e6eaf2;
  --line-2:#eef1f7;
  --bg:#f7f9fc;
  --surface:#ffffff;
  --surface-2:#f1f4fb;
  --ok:#16a34a;
  --warn:#f59e0b;
  --bad:#ef4444;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06),0 1px 3px rgba(15,23,42,.05);
  --shadow:0 10px 30px rgba(15,23,42,.08);
  --shadow-lg:0 24px 60px rgba(15,23,42,.12);
  --maxw:1180px;
  --nav-h:64px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",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:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:84px 0}
.muted{color:var(--muted)}
.center{text-align:center}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;font-weight:600;font-size:15px;
  padding:12px 22px;border-radius:12px;border:1px solid transparent;cursor:pointer;transition:.18s;white-space:nowrap}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(45,91,255,.28)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-1px);box-shadow:0 12px 26px rgba(45,91,255,.34)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-light{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.35)}
.btn-light:hover{background:rgba(255,255,255,.26)}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-block{width:100%}

/* ---------- 导航 ---------- */
.nav{position:sticky;top:0;z-index:50;height:var(--nav-h);background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.nav .wrap{height:100%;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:.2px}
.logo .mark{width:32px;height:32px;border-radius:9px;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:16px;font-weight:900}
.nav-links{display:flex;align-items:center;gap:30px;font-size:15px;color:var(--ink-2);font-weight:500}
.nav-links a:hover{color:var(--brand)}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;background:none;border:0;font-size:24px;cursor:pointer;color:var(--ink)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(900px 500px at 85% -10%,rgba(124,58,237,.16),transparent 60%),
  radial-gradient(700px 420px at 5% 0%,rgba(45,91,255,.14),transparent 55%),
  linear-gradient(180deg,#fff,#f7f9fc)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:74px 0 64px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);
  background:rgba(45,91,255,.08);padding:6px 14px;border-radius:999px;margin-bottom:18px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--brand)}
.hero h1{font-size:46px;line-height:1.18;font-weight:800;letter-spacing:-.5px;margin-bottom:18px}
.hero p.lead{font-size:18px;color:var(--ink-2);max-width:540px;margin-bottom:28px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:22px}
.hero-note{font-size:13px;color:var(--muted)}
.hero-visual{position:relative}
.glass{background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-lg);padding:22px}
.score-card{display:flex;align-items:center;gap:18px;margin-bottom:16px}
.ring{width:96px;height:96px;flex:none}
.score-meta h4{font-size:14px;color:var(--muted);font-weight:600}
.score-meta .big{font-size:34px;font-weight:800;line-height:1}
.score-meta .delta{font-size:13px;color:var(--ok);font-weight:600}
.mini-bars{display:grid;gap:10px}
.mini-bar{display:grid;grid-template-columns:84px 1fr 38px;align-items:center;gap:10px;font-size:13px;color:var(--ink-2)}
.track{height:8px;background:var(--surface-2);border-radius:99px;overflow:hidden}
.track>i{display:block;height:100%;background:var(--grad);border-radius:99px}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:8px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-align:center;box-shadow:var(--shadow-sm)}
.stat .n{font-size:30px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .t{font-size:14px;color:var(--muted);margin-top:4px}

/* ---------- 区块标题 ---------- */
.sec-head{text-align:center;max-width:680px;margin:0 auto 46px}
.sec-head .tag{font-size:13px;font-weight:700;color:var(--brand);letter-spacing:1px;text-transform:uppercase}
.sec-head h2{font-size:34px;font-weight:800;letter-spacing:-.4px;margin:10px 0 12px}
.sec-head p{font-size:17px;color:var(--muted)}

/* ---------- 能力卡 ---------- */
.cards-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);transition:.2s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#d8e0f5}
.card .ico{width:46px;height:46px;border-radius:12px;background:rgba(45,91,255,.1);color:var(--brand);
  display:grid;place-items:center;font-size:22px;font-weight:800;margin-bottom:16px}
.card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.card p{font-size:14.5px;color:var(--muted)}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:s}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px 18px;position:relative;box-shadow:var(--shadow-sm)}
.step .num{counter-increment:s;width:34px;height:34px;border-radius:50%;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-weight:800;margin-bottom:14px}
.step .num::before{content:counter(s)}
.step h4{font-size:16px;font-weight:700;margin-bottom:6px}
.step p{font-size:13.5px;color:var(--muted)}

/* ---------- 价格 ---------- */
.price{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
.plan{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column}
.plan.feat{border-color:var(--brand);box-shadow:0 18px 44px rgba(45,91,255,.18);transform:translateY(-6px)}
.plan .badge{position:absolute}
.ribbon{align-self:flex-start;font-size:12px;font-weight:700;color:#fff;background:var(--grad);padding:4px 12px;border-radius:999px;margin-bottom:12px}
.plan h3{font-size:20px;font-weight:800}
.plan .desc{font-size:13.5px;color:var(--muted);min-height:38px;margin:6px 0 14px}
.plan .price-n{font-size:38px;font-weight:800}
.plan .price-n small{font-size:15px;color:var(--muted);font-weight:600}
.plan ul{list-style:none;margin:18px 0 22px;display:grid;gap:11px;font-size:14.5px;color:var(--ink-2);flex:1}
.plan li{display:flex;gap:10px;align-items:flex-start}
.plan li::before{content:"✓";color:var(--ok);font-weight:800;flex:none}
.plan li.off{color:var(--muted-2)}
.plan li.off::before{content:"—";color:var(--muted-2)}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto;display:grid;gap:12px}
.qa{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
.qa summary{list-style:none;cursor:pointer;padding:18px 22px;font-weight:600;font-size:16px;display:flex;justify-content:space-between;align-items:center;gap:12px}
.qa summary::-webkit-details-marker{display:none}
.qa summary .pm{color:var(--brand);font-size:22px;font-weight:400;transition:.2s}
.qa[open] summary .pm{transform:rotate(45deg)}
.qa .ans{padding:0 22px 20px;color:var(--muted);font-size:15px}

/* ---------- 页脚 ---------- */
.footer{background:#0b1220;color:#cbd5e1;padding:54px 0 28px;margin-top:20px}
.footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
.footer .logo{color:#fff}
.footer h5{color:#fff;font-size:14px;margin-bottom:14px;font-weight:700}
.footer a{color:#cbd5e1;font-size:14px;display:block;padding:5px 0}
.footer a:hover{color:#fff}
.footer .about{font-size:14px;color:#94a3b8;max-width:300px;margin-top:14px}
.footer .bottom{border-top:1px solid #1e293b;margin-top:36px;padding-top:18px;font-size:13px;color:#64748b;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* =========================================================================
   认证页 (登录 / 注册)
   ========================================================================= */
.auth{min-height:100vh;display:grid;grid-template-columns:1.05fr .95fr}
.auth-aside{background:
  radial-gradient(600px 400px at 80% 10%,rgba(124,58,237,.35),transparent 60%),
  radial-gradient(500px 360px at 10% 90%,rgba(45,91,255,.4),transparent 60%),
  linear-gradient(160deg,#14224d,#0b1220);color:#fff;padding:56px;display:flex;flex-direction:column;justify-content:space-between}
.auth-aside .logo{color:#fff}
.auth-aside .hl{font-size:30px;font-weight:800;line-height:1.35;margin:auto 0}
.auth-aside .hl .grad-text{-webkit-text-fill-color:transparent}
.auth-aside .quote{font-size:14px;color:#aab6d4;border-top:1px solid rgba(255,255,255,.14);padding-top:18px}
.auth-main{display:grid;place-items:center;padding:32px}
.auth-card{width:100%;max-width:400px}
.auth-card h1{font-size:26px;font-weight:800;margin-bottom:6px}
.auth-card .sub{color:var(--muted);font-size:15px;margin-bottom:26px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-2);margin-bottom:7px}
.field input{width:100%;padding:12px 14px;font-size:15px;border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--ink);transition:.15s}
.field input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(45,91,255,.12)}
.field .err{color:var(--bad);font-size:12.5px;margin-top:6px;display:none}
.row-between{display:flex;justify-content:space-between;align-items:center;font-size:14px;margin-bottom:18px}
.row-between a{color:var(--brand);font-weight:600}
.check{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:14px}
.check input{width:16px;height:16px;accent-color:var(--brand)}
.auth-switch{text-align:center;font-size:14px;color:var(--muted);margin-top:22px}
.auth-switch a{color:var(--brand);font-weight:700}
.auth-tip{background:rgba(45,91,255,.07);border:1px solid rgba(45,91,255,.18);color:var(--brand-700);
  font-size:13px;padding:10px 14px;border-radius:10px;margin-bottom:18px}
.demo-badge{position:fixed;top:14px;right:14px;background:var(--warn);color:#fff;font-size:12px;font-weight:700;padding:6px 12px;border-radius:999px;z-index:99}

/* =========================================================================
   管理后台
   ========================================================================= */
.app{display:grid;grid-template-columns:240px 1fr;min-height:100vh}
.sidebar{background:#0b1220;color:#cbd5e1;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.sidebar .brand{padding:18px 20px;display:flex;align-items:center;gap:10px;font-weight:800;color:#fff;font-size:16px;border-bottom:1px solid #1e293b}
.sidebar .brand .mark{width:30px;height:30px;border-radius:8px;background:var(--grad);display:grid;place-items:center;color:#fff;font-weight:900}
.side-nav{display:flex;flex-direction:column;gap:2px;padding:14px 12px;overflow:auto}
.side-nav a{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:10px;color:#aab6d4;font-size:14.5px;font-weight:500;cursor:pointer}
.side-nav a:hover{background:rgba(255,255,255,.06);color:#fff}
.side-nav a.active{background:var(--grad);color:#fff;font-weight:600}
.side-nav .grp{font-size:11px;letter-spacing:1px;text-transform:uppercase;color:#5b6b8c;padding:14px 12px 6px}
.side-foot{padding:14px 16px;border-top:1px solid #1e293b;margin-top:auto;font-size:13px;color:#7e8aa6}

.main{background:var(--bg);display:flex;flex-direction:column;min-width:0}
.topbar{height:62px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;
  justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:20}
.topbar .crumb{font-size:14px;color:var(--muted)}
.topbar .crumb b{color:var(--ink)}
.proj-select{display:flex;align-items:center;gap:8px;background:var(--surface-2);border:1px solid var(--line);
  border-radius:10px;padding:7px 12px;font-size:14px;font-weight:600;cursor:pointer}
.topbar-right{display:flex;align-items:center;gap:16px}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:700;font-size:14px;cursor:pointer}
.content{padding:26px 24px 40px}
.page-title{font-size:22px;font-weight:800;margin-bottom:4px}
.page-sub{color:var(--muted);font-size:14px;margin-bottom:22px}

.kpi-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:18px}
.kpi{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-sm)}
.kpi .k{font-size:13px;color:var(--muted);font-weight:600}
.kpi .v{font-size:28px;font-weight:800;margin-top:4px}
.kpi .v small{font-size:14px;color:var(--muted);font-weight:600}
.kpi .up{font-size:12.5px;color:var(--ok);font-weight:600;margin-top:2px}
.kpi .down{font-size:12.5px;color:var(--bad);font-weight:600;margin-top:2px}

.grid-2{display:grid;grid-template-columns:1.3fr 1fr;gap:18px}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden}
.panel-h{padding:16px 20px;border-bottom:1px solid var(--line-2);display:flex;justify-content:space-between;align-items:center}
.panel-h h3{font-size:16px;font-weight:700}
.panel-h .more{font-size:13px;color:var(--brand);font-weight:600;cursor:pointer}
.panel-b{padding:18px 20px}

.dims{display:grid;gap:13px}
.dim{display:grid;grid-template-columns:110px 1fr 44px;align-items:center;gap:12px;font-size:14px}
.dim .name{color:var(--ink-2);font-weight:500}
.dim .v{font-weight:700;text-align:right}
.dim .track>i{background:linear-gradient(90deg,#2d5bff,#7c3aed)}

.engine-table{width:100%;border-collapse:collapse;font-size:14px}
.engine-table th{text-align:left;color:var(--muted);font-weight:600;font-size:12.5px;padding:8px 10px;border-bottom:1px solid var(--line)}
.engine-table td{padding:11px 10px;border-bottom:1px solid var(--line-2);font-weight:500}
.engine-table tr:last-child td{border-bottom:0}
.pill{display:inline-block;font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px}
.pill.g{background:rgba(22,163,74,.12);color:var(--ok)}
.pill.y{background:rgba(245,158,11,.14);color:#b45309}
.pill.r{background:rgba(239,68,68,.12);color:var(--bad)}

.task{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--line-2)}
.task:last-child{border-bottom:0}
.task .st{width:9px;height:9px;border-radius:50%;margin-top:7px;flex:none}
.task .st.todo{background:var(--muted-2)}
.task .st.doing{background:var(--brand)}
.task .st.done{background:var(--ok)}
.task .ti{font-size:14.5px;font-weight:600}
.task .td{font-size:13px;color:var(--muted);margin-top:2px}
.task .meta{margin-left:auto;text-align:right;font-size:12px;color:var(--muted);white-space:nowrap}

.proj-card{display:flex;align-items:center;gap:14px;padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-sm);margin-bottom:12px;cursor:pointer}
.proj-card:hover{border-color:var(--brand)}
.proj-card .ava{width:42px;height:42px;border-radius:11px;background:var(--surface-2);display:grid;place-items:center;font-weight:800;color:var(--brand)}
.proj-card .nm{font-weight:700;font-size:15px}
.proj-card .url{font-size:13px;color:var(--muted)}
.proj-card .sc{margin-left:auto;text-align:right}
.proj-card .sc b{font-size:20px}

.empty{text-align:center;color:var(--muted);padding:40px;font-size:14px}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .hero h1{font-size:36px}
  .cards-4,.stats{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .price{grid-template-columns:1fr}
  .plan.feat{transform:none}
  .grid-2,.kpi-row{grid-template-columns:1fr}
  .footer .cols{grid-template-columns:1fr 1fr}
  .auth{grid-template-columns:1fr}
  .auth-aside{display:none}
  .app{grid-template-columns:1fr}
  .sidebar{display:none}
}
@media(max-width:560px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav-links.open{display:flex;position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;
    background:#fff;border-bottom:1px solid var(--line);padding:14px 24px;gap:16px}
  .hero h1{font-size:30px}
  .cards-4,.stats,.steps,.kpi-row{grid-template-columns:1fr}
  .footer .cols{grid-template-columns:1fr}
  section{padding:56px 0}
}

/* 弹窗与提示（登录/注册页复用，与 app-blue 视觉一致） */
.modal{position:fixed;inset:0;background:rgba(15,23,42,.45);display:grid;place-items:center;z-index:60;padding:24px}
.modal .box{background:var(--surface);border-radius:var(--radius);padding:22px 24px;max-width:460px;width:100%;box-shadow:var(--shadow-lg);border:1px solid var(--line)}
.modal .box h4{margin-bottom:14px}
.modal .soft{margin:4px 0 14px}
.toast{position:fixed;right:20px;bottom:20px;background:var(--surface);box-shadow:var(--shadow-lg);color:var(--ink);border-left:4px solid var(--brand);border-radius:12px;padding:12px 16px;font-size:14px;font-weight:600;z-index:70;animation:toastin .18s ease}
.toast.err{border-left-color:var(--bad)}
@keyframes toastin{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}