/* ============================================================
   出海易数据导航 · 基础样式
   ============================================================ */
:root{
  --blue:#2563eb; --blue-d:#1d4ed8; --blue-l:#eff6ff;
  --ink:#0f172a; --muted:#64748b; --faint:#94a3b8;
  --line:#e8ecf1; --bg:#f5f7fa; --card:#fff;
  --green:#16a34a; --red:#dc2626; --amber:#d97706;
  --navy:#1e293b;
  --radius:12px;
  --shadow:0 2px 12px rgba(15,23,42,.06);
}
*{margin:0;padding:0;box-sizing:border-box}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}

/* 演示提示条 */
.demo-bar{
  background:#fffbeb;border-bottom:1px solid #fde68a;color:#92400e;
  font-size:12.5px;padding:7px 24px;text-align:center;
}
.demo-bar b{color:#78350f}

/* ---------- 导航 ---------- */
.navbar{background:#fff;border-bottom:1px solid var(--line);padding:0 24px;position:sticky;top:0;z-index:100;box-shadow:0 1px 4px rgba(0,0,0,.04)}
.navbar-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:60px;gap:16px}
.logo{font-size:18px;font-weight:700;color:var(--blue);display:flex;align-items:center;gap:8px;white-space:nowrap}
.logo span{font-size:22px}
.nav-links{display:flex;gap:26px}
.nav-links a{text-decoration:none;color:var(--muted);font-size:14px;font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--blue);text-decoration:none}
.nav-links a.active{color:var(--blue);font-weight:600}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-login{font-size:14px;color:var(--muted);font-weight:500}
.nav-cta{background:var(--blue);color:#fff;padding:8px 18px;border-radius:8px;font-size:14px;font-weight:600;transition:background .2s}
.nav-cta:hover{background:var(--blue-d);text-decoration:none}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:6px 10px;font-size:16px;cursor:pointer;color:var(--muted)}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(135deg,#1e3a8a 0%,#2563eb 100%);padding:44px 24px 60px;color:#fff}
.hero-inner{max-width:1200px;margin:0 auto}
.hero h1{font-size:28px;font-weight:700;margin-bottom:8px;letter-spacing:-.3px}
.hero p{font-size:15px;opacity:.86;margin-bottom:26px;max-width:760px}
.search-box{display:flex;background:#fff;border-radius:12px;overflow:hidden;max-width:720px;box-shadow:0 8px 24px rgba(0,0,0,.15)}
.search-box input{flex:1;border:none;padding:16px 20px;font-size:15px;outline:none;color:var(--ink);min-width:0}
.search-box input::placeholder{color:var(--faint)}
.search-box button{background:var(--blue);color:#fff;border:none;padding:0 32px;font-size:15px;font-weight:600;cursor:pointer;transition:background .2s}
.search-box button:hover{background:var(--blue-d)}
.search-tags{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap;align-items:center}
.search-tags .lbl{font-size:13px;opacity:.7;margin-right:2px}
.search-tags span{font-size:13px;background:rgba(255,255,255,.15);padding:4px 13px;border-radius:20px;cursor:pointer;transition:background .2s}
.search-tags span:hover{background:rgba(255,255,255,.32)}
.small-hero{padding:30px 24px 42px}
.small-hero h1{font-size:23px}
.small-hero .search-box{margin-top:0}

/* ---------- 容器 ---------- */
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{margin-top:38px}
.section-header{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:14px;gap:16px;flex-wrap:wrap}
.section-title{font-size:18px;font-weight:700}
.section-sub{font-size:13px;color:var(--faint);margin-top:2px}

/* ---------- 指标卡 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:-34px;position:relative;z-index:10}
.metric-card{background:var(--card);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);border:1px solid var(--line)}
.metric-label{font-size:13px;color:var(--muted);margin-bottom:6px}
.metric-value{font-size:24px;font-weight:700;letter-spacing:-.5px}
.metric-value small{font-size:14px;font-weight:600;color:var(--muted);margin-left:2px}
.metric-change{font-size:12px;margin-top:4px}
.up{color:var(--green)}
.down{color:var(--red)}
.flat{color:var(--muted)}

/* ---------- 卡片 ---------- */
.card{background:var(--card);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border:1px solid var(--line)}
.card-tight{padding:18px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}

/* ---------- Tab ---------- */
.tabs{display:flex;gap:8px}
.tab{padding:6px 16px;border-radius:8px;font-size:13px;font-weight:500;cursor:pointer;border:1px solid var(--line);background:#fff;color:var(--muted);transition:all .2s;font-family:inherit}
.tab.active{background:var(--blue);color:#fff;border-color:var(--blue)}

/* ---------- 柱状图 ---------- */
.bar-chart{margin-top:6px}
.bar-row{display:flex;align-items:center;margin-bottom:13px}
.bar-row:last-child{margin-bottom:0}
.bar-label{width:112px;font-size:13px;color:#475569;flex-shrink:0;display:flex;align-items:center;gap:6px}
.bar-rank{display:inline-flex;width:18px;height:18px;border-radius:5px;background:#f1f5f9;color:var(--faint);font-size:11px;font-weight:700;align-items:center;justify-content:center;flex-shrink:0}
.bar-row:nth-child(1) .bar-rank{background:var(--blue);color:#fff}
.bar-row:nth-child(2) .bar-rank{background:#93c5fd;color:#1e3a8a}
.bar-row:nth-child(3) .bar-rank{background:#dbeafe;color:#1e40af}
.bar-track{flex:1;height:26px;background:#f1f5f9;border-radius:6px;overflow:hidden;margin:0 12px}
.bar-fill{height:100%;border-radius:6px;background:linear-gradient(90deg,#60a5fa,#2563eb);transition:width .7s cubic-bezier(.4,0,.2,1)}
.bar-fill.alt{background:linear-gradient(90deg,#86efac,#16a34a)}
.bar-value{width:96px;text-align:right;font-size:13px;font-weight:600;flex-shrink:0}
.bar-sub{display:block;font-size:11px;color:var(--faint);font-weight:400}

/* ---------- 表格 ---------- */
.table-wrap{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line);overflow-x:auto}
.data-table{width:100%;border-collapse:collapse;min-width:640px}
.data-table th{text-align:left;padding:12px 16px;font-size:13px;color:var(--muted);font-weight:600;background:#f8fafc;border-bottom:1px solid var(--line);white-space:nowrap}
.data-table td{padding:12px 16px;font-size:14px;border-bottom:1px solid #f1f5f9;white-space:nowrap}
.data-table tr:last-child td{border-bottom:none}
.data-table tbody tr:hover td{background:#f8fafc}
.tag{display:inline-block;padding:2px 10px;border-radius:12px;font-size:12px;font-weight:600}
.tag-green{background:#dcfce7;color:#15803d}
.tag-blue{background:#dbeafe;color:#1d4ed8}
.tag-orange{background:#ffedd5;color:#c2410c}
.tag-gray{background:#f1f5f9;color:#64748b}
.flag{font-size:16px;margin-right:6px}

/* ---------- 付费墙 ---------- */
.paywall{background:linear-gradient(135deg,#1e293b 0%,#334155 100%);border-radius:var(--radius);padding:30px 32px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:38px}
.paywall h3{font-size:18px;font-weight:700;margin-bottom:6px}
.paywall p{font-size:14px;opacity:.76;max-width:640px}
.paywall-badge{display:inline-block;background:rgba(251,191,36,.18);color:#fbbf24;font-size:12px;padding:3px 10px;border-radius:12px;margin-bottom:10px;font-weight:600}
.paywall-btn{background:#fbbf24;color:#1e293b;border:none;padding:12px 28px;border-radius:10px;font-size:15px;font-weight:700;cursor:pointer;white-space:nowrap;transition:transform .2s;font-family:inherit}
.paywall-btn:hover{transform:translateY(-2px)}
.paywall-side{flex-shrink:0;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.paywall-note{font-size:12px;opacity:.55}
.paywall-inline{margin-top:26px;padding:22px 24px}

/* 锁定遮罩 */
.locked{position:relative}
.locked-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,0) 0%,rgba(255,255,255,.9) 45%,#fff 75%);display:flex;align-items:flex-end;justify-content:center;padding-bottom:14px;border-radius:var(--radius)}
.locked-mask .lock-btn{background:var(--navy);color:#fff;border:none;padding:9px 20px;border-radius:8px;font-size:13px;font-weight:600;cursor:pointer;font-family:inherit}
.lock-note{font-size:12px;color:var(--faint);margin-left:10px}

/* ---------- 表单控件 ---------- */
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;color:var(--muted);font-weight:500}
select,input[type=text],input[type=email]{
  font-family:inherit;font-size:14px;padding:10px 12px;border:1px solid var(--line);
  border-radius:8px;background:#fff;color:var(--ink);outline:none;width:100%
}
select:focus,input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.1)}
.btn{font-family:inherit;font-size:14px;font-weight:600;padding:10px 20px;border-radius:8px;border:1px solid var(--blue);background:var(--blue);color:#fff;cursor:pointer;transition:background .2s}
.btn:hover{background:var(--blue-d)}
.btn-ghost{background:#fff;color:var(--blue)}
.btn-ghost:hover{background:var(--blue-l)}
.filter-bar{display:grid;grid-template-columns:1.4fr 1fr 1fr auto;gap:12px;align-items:end}

/* ---------- 定价 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:start}
.price-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);position:relative}
.price-card.hot{border-color:var(--blue);box-shadow:0 6px 22px rgba(37,99,235,.13)}
.price-card .ribbon{position:absolute;top:-11px;left:26px;background:var(--blue);color:#fff;font-size:12px;font-weight:700;padding:3px 12px;border-radius:20px}
.price-name{font-size:16px;font-weight:700;margin-bottom:4px}
.price-desc{font-size:13px;color:var(--muted);min-height:38px}
.price-num{font-size:32px;font-weight:700;margin:14px 0 2px;letter-spacing:-1px}
.price-num small{font-size:14px;color:var(--muted);font-weight:500}
.price-unit{font-size:12px;color:var(--faint);margin-bottom:16px}
.price-feat{list-style:none;font-size:13.5px;display:flex;flex-direction:column;gap:9px;margin-bottom:20px}
.price-feat li{display:flex;gap:8px;align-items:flex-start;color:#334155}
.price-feat li.no{color:var(--faint)}
.price-feat .ic{flex-shrink:0;font-weight:700}
.price-card .btn{width:100%}

/* ---------- 通用列表 ---------- */
.kv{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px}
.kv:last-child{border-bottom:none}
.kv .k{color:var(--muted)}
.kv .v{font-weight:600}
.note{font-size:12.5px;color:var(--faint)}
.source-note{font-size:12px;color:var(--faint);margin-top:10px;text-align:right}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.chip{font-size:13px;padding:5px 13px;border:1px solid var(--line);border-radius:20px;background:#fff;color:#475569;cursor:pointer;transition:all .2s}
.chip:hover{border-color:var(--blue);color:var(--blue)}
.chip.active{background:var(--blue);color:#fff;border-color:var(--blue)}

/* 关于页 */
.doc h2{font-size:19px;font-weight:700;margin:30px 0 12px;padding-left:11px;border-left:4px solid var(--blue)}
.doc h2:first-child{margin-top:0}
.doc p{font-size:14.5px;color:#334155;margin-bottom:10px}
.doc ul{margin:0 0 12px 20px;font-size:14.5px;color:#334155}
.doc li{margin-bottom:6px}
.warn{background:#fff7ed;border:1px solid #fed7aa;border-radius:10px;padding:16px 18px;font-size:14px;color:#9a3412;margin:14px 0}
.warn b{color:#7c2d12}

/* 空状态 */
.empty{text-align:center;padding:46px 20px;color:var(--muted);font-size:14px}
.empty .big{font-size:34px;margin-bottom:8px}

/* Toast */
#toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(20px);background:var(--navy);color:#fff;font-size:14px;padding:11px 22px;border-radius:22px;opacity:0;pointer-events:none;transition:all .28s;z-index:999;box-shadow:0 8px 24px rgba(0,0,0,.2)}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- 页脚 ---------- */
.footer{margin-top:64px;padding:30px 24px;border-top:1px solid var(--line);background:#fff}
.footer-inner{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:13px;color:var(--faint);flex-wrap:wrap}
.footer-links{display:flex;gap:20px;flex-wrap:wrap}
.footer-links a{color:var(--faint)}
.footer-links a:hover{color:var(--blue)}

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .metrics{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr}
  .filter-bar{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .nav-links{
    display:none;position:absolute;top:60px;left:0;right:0;background:#fff;
    flex-direction:column;gap:0;padding:8px 0;border-bottom:1px solid var(--line);box-shadow:0 8px 20px rgba(0,0,0,.08)
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 24px;font-size:15px}
  .burger{display:block}
  .nav-login{display:none}
  .hero h1{font-size:22px}
  .hero{padding:34px 20px 52px}
  .container{padding:0 16px}
  .grid-2{grid-template-columns:1fr}
  .paywall{flex-direction:column;align-items:flex-start;padding:24px}
  .paywall-side{align-items:stretch;width:100%}
  .paywall-btn{width:100%}
  .bar-label{width:84px;font-size:12px}
  .bar-value{width:78px;font-size:12px}
  .filter-bar{grid-template-columns:1fr}
  .footer-inner{flex-direction:column;align-items:flex-start}
}