:root {
  --bg: #0b1020;
  --bg-soft: #141b34;
  --card: #182142;
  --border: #2a3563;
  --text: #e8ecff;
  --muted: #8b96c4;
  --accent: #5b7cfa;
  --accent2: #37d0a7;
  --danger: #f0647e;
  --radius: 12px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  font-size: 14px; line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* 顶栏 */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11,16,32,.9); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  display: flex; align-items: center; gap: 24px;
  max-width: 1100px; margin: 0 auto; padding: 12px 20px;
}
.logo { font-size: 18px; font-weight: 700; color: var(--text); }
.logo span { color: var(--accent); }
.nav { display: flex; gap: 18px; flex: 1; }
.nav a { color: var(--muted); font-size: 14px; }
.nav a:hover { color: var(--text); }
.lang-toggle {
  border: 1px solid var(--border); background: transparent; color: var(--muted);
  border-radius: 20px; padding: 4px 14px; cursor: pointer; font-size: 13px;
}
.lang-toggle:hover { color: var(--text); border-color: var(--accent); }
.menu-toggle { display: none; border: none; background: transparent; color: var(--muted); font-size: 20px; cursor: pointer; }

/* 按钮 */
.btn {
  display: inline-block; border: none; border-radius: 8px; cursor: pointer;
  padding: 8px 18px; font-size: 14px; font-weight: 500;
  background: var(--accent); color: #fff; transition: opacity .15s;
}
.btn:hover { opacity: .85; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn.success { background: var(--accent2); }
.btn.danger { background: var(--danger); }
.btn.small { padding: 4px 12px; font-size: 12px; }

/* 区块 */
.hero { text-align: center; padding: 80px 20px 60px; }
.hero h1 { font-size: 42px; margin-bottom: 16px; }
.hero h1 em { color: var(--accent); font-style: normal; }
.hero p { color: var(--muted); font-size: 17px; max-width: 640px; margin: 0 auto 28px; }
.section { padding: 48px 0; }
.section h2 { font-size: 26px; margin-bottom: 8px; }
.section .sub { color: var(--muted); margin-bottom: 24px; }

/* 卡片 */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; margin-bottom: 16px;
}
.card h3 { font-size: 15px; margin-bottom: 12px; color: var(--muted); font-weight: 600; }

/* 类别标签页 */
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.tab {
  padding: 6px 16px; border-radius: 20px; cursor: pointer; font-size: 13px;
  border: 1px solid var(--border); color: var(--muted); background: transparent;
}
.tab.active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* 表格 */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; }
td { color: var(--text); word-break: break-all; }
.table-wrap { overflow-x: auto; }

/* 弹窗 */
.modal-mask {
  position: fixed; inset: 0; background: rgba(0,0,0,.6); z-index: 100;
  display: none; align-items: center; justify-content: center; padding: 16px;
}
.modal-mask.show { display: flex; }
.modal {
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px; width: 100%; max-width: 400px;
}
.modal h3 { margin-bottom: 20px; font-size: 18px; }
.modal .close { float: right; cursor: pointer; color: var(--muted); font-size: 20px; }

/* 表单 */
.field { margin-bottom: 14px; }
.field label { display: block; color: var(--muted); margin-bottom: 6px; font-size: 13px; }
.filters { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; margin-bottom: 16px; }
.filters .field { margin-bottom: 0; min-width: 120px; flex: 1; }
.filters .field input, .filters .field select { font-size: 13px; padding: 7px 10px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 9px 12px; border-radius: 8px; font-size: 14px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
}
.field input:focus, .field select:focus { outline: none; border-color: var(--accent); }
.divider { text-align: center; color: var(--muted); margin: 16px 0; position: relative; }
.divider::before, .divider::after {
  content: ""; position: absolute; top: 50%; width: 40%; height: 1px; background: var(--border);
}
.divider::before { left: 0; } .divider::after { right: 0; }

/* 控制台 */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat-box { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.stat-box .num { font-size: 24px; font-weight: 700; color: var(--accent2); }
.stat-box .label { color: var(--muted); font-size: 12px; }

/* 提示 */
.toast {
  position: fixed; top: 70px; left: 50%; transform: translateX(-50%);
  background: var(--bg-soft); border: 1px solid var(--accent); color: var(--text);
  padding: 10px 22px; border-radius: 8px; z-index: 200; display: none; font-size: 13px;
}
.toast.error { border-color: var(--danger); }

.muted { color: var(--muted); }
.mono { font-family: Consolas, monospace; font-size: 12px; }
.mono.small { font-size: 11px; }
.hidden { display: none !important; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 11px; background: var(--bg); border: 1px solid var(--border); color: var(--muted); }
.badge.ok { color: var(--accent2); border-color: var(--accent2); }
.badge.err { color: var(--danger); border-color: var(--danger); }

/* 营销页增强 */
.hero-marketing {
  position: relative; overflow: hidden;
  text-align: center; padding: 110px 20px 90px;
  background:
    linear-gradient(rgba(11,14,30,.85), rgba(11,14,30,.9)),
    url('/assets/images/hero_bg.jpg') center/cover no-repeat,
    var(--bg);
}
.hero-marketing::before {
  content: ""; position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0h60v60H0z' fill='none'/%3E%3Ccircle cx='30' cy='30' r='1' fill='%235b7cfa' opacity='.15'/%3E%3C/svg%3E");
  opacity: .4; pointer-events: none;
}
.hero-marketing .inner { position: relative; z-index: 1; max-width: 840px; margin: 0 auto; }
.hero-marketing h1 { font-size: 52px; line-height: 1.15; margin-bottom: 20px; font-weight: 800; }
.hero-marketing h1 em { color: var(--accent); font-style: normal; }
.hero-marketing .sub { color: var(--muted); font-size: 18px; max-width: 680px; margin: 0 auto 32px; line-height: 1.7; }
.hero-marketing .btn { padding: 12px 32px; font-size: 16px; border-radius: 10px; }
.hero-marketing .hint { margin-top: 16px; color: var(--accent2); font-size: 13px; }
.hero-marketing .hint a { color: var(--accent2); text-decoration: underline; }
.badge-strip {
  display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; margin-top: 32px;
}
.badge-pill {
  background: rgba(91,124,250,.12); border: 1px solid rgba(91,124,250,.35);
  color: var(--accent); padding: 6px 16px; border-radius: 20px; font-size: 13px;
}

.section-marketing { padding: 72px 0; }
.section-marketing h2 { font-size: 32px; text-align: center; margin-bottom: 12px; }
.section-marketing .sub { text-align: center; color: var(--muted); font-size: 16px; max-width: 640px; margin: 0 auto 40px; }

.trust-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px;
}
.trust-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; text-align: center; transition: transform .15s, border-color .15s;
}
.trust-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.trust-card .icon { width: 56px; height: 56px; margin: 0 auto 16px; }
.trust-card h3 { font-size: 18px; margin-bottom: 8px; }
.trust-card p { color: var(--muted); font-size: 14px; line-height: 1.6; }

.price-banner {
  background: linear-gradient(135deg, rgba(91,124,250,.2), rgba(55,208,167,.12));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 40px; text-align: center;
}
.price-banner .big { font-size: 36px; font-weight: 800; color: var(--accent2); margin-bottom: 12px; }
.price-banner p { color: var(--muted); font-size: 15px; }

.category-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px;
}
.category-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; position: relative; overflow: hidden;
  transition: transform .15s, border-color .15s;
}
.category-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.category-card::after {
  content: ""; position: absolute; top: -40px; right: -40px; width: 120px; height: 120px;
  border-radius: 50%; background: radial-gradient(circle, rgba(91,124,250,.15), transparent 70%);
}
.category-card .img-wrap { width: 100%; height: 120px; border-radius: 8px; overflow: hidden; margin-bottom: 18px; position: relative; z-index: 1; }
.category-card .img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.category-card h3 { font-size: 20px; margin-bottom: 10px; position: relative; z-index: 1; }
.category-card .tag {
  display: inline-block; background: rgba(91,124,250,.15); color: var(--accent);
  padding: 2px 10px; border-radius: 12px; font-size: 12px; margin-bottom: 12px;
}
.category-card p { color: var(--muted); font-size: 13px; line-height: 1.7; position: relative; z-index: 1; }
.category-card .models { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); }
.category-card .models strong { display: block; color: var(--accent2); font-size: 12px; margin-bottom: 6px; }
.category-card .models span { color: var(--text); font-size: 13px; }

.how-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; counter-reset: step;
}
.how-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; text-align: center; position: relative;
}
.how-card::before {
  counter-increment: step; content: counter(step);
  position: absolute; top: -18px; left: 50%; transform: translateX(-50%);
  width: 36px; height: 36px; line-height: 36px; border-radius: 50%;
  background: var(--accent); color: #fff; font-weight: 700; font-size: 14px;
}
.how-card h3 { margin-top: 8px; font-size: 17px; margin-bottom: 8px; }
.how-card p { color: var(--muted); font-size: 13px; }

.cta-section {
  text-align: center; padding: 80px 20px;
  background: radial-gradient(ellipse at 50% 50%, rgba(91,124,250,.15), transparent 60%), var(--bg-soft);
  border-top: 1px solid var(--border);
}
.cta-section h2 { font-size: 34px; margin-bottom: 12px; }
.cta-section p { color: var(--muted); font-size: 16px; margin-bottom: 24px; }

.footer-marketing {
  background: var(--bg); border-top: 1px solid var(--border); padding: 48px 20px 32px; text-align: center;
}
.footer-marketing .footer-brand { font-size: 24px; font-weight: 800; margin-bottom: 12px; }
.footer-marketing .footer-brand span { color: var(--accent); }
.footer-marketing .slogan { color: var(--text); font-size: 15px; margin-bottom: 8px; }
.footer-marketing .contact { color: var(--accent); font-size: 14px; margin-bottom: 16px; }
.footer-marketing .copyright { color: var(--muted); font-size: 12px; }

/* 页脚 */
.footer { border-top: 1px solid var(--border); padding: 32px 0; color: var(--muted); text-align: center; font-size: 13px; }

/* ===== 手机适配 ===== */
@media (max-width: 720px) {
  .container { padding: 0 14px; }
  .topbar-inner { gap: 10px; padding: 10px 14px; }
  .logo { font-size: 16px; }
  .menu-toggle { display: block; }
  .nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0; background: var(--bg-soft);
    border-bottom: 1px solid var(--border); padding: 6px 14px 12px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 10px 4px; font-size: 15px; border-bottom: 1px solid var(--border); }
  .nav a:last-child { border-bottom: none; }
  .hero { padding: 56px 14px 40px; }
  .hero h1 { font-size: 28px; }
  .hero p { font-size: 15px; }
  .section { padding: 32px 0; }
  .section h2 { font-size: 22px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-box { padding: 12px; }
  .stat-box .num { font-size: 18px; }
  th, td { padding: 8px 4px; font-size: 12px; }
  .card { padding: 14px; }
  .modal { padding: 20px; max-height: 90vh; overflow-y: auto; }
  .btn { padding: 8px 14px; }
  .toast { max-width: calc(100vw - 32px); text-align: center; }

  .hero-marketing { padding: 56px 16px 48px; }
  .hero-marketing h1 { font-size: 26px; line-height: 1.25; margin-bottom: 14px; }
  .hero-marketing .sub { font-size: 14px; line-height: 1.7; margin-bottom: 22px; }
  .hero-marketing .btn { display: block; width: 100%; max-width: 280px; margin: 0 auto 12px; }
  .hero-marketing a { display: block; width: 100%; max-width: 280px; margin: 0 auto !important; }
  .hero-marketing .hint { font-size: 12px; }
  .badge-strip { gap: 8px; margin-top: 20px; }
  .badge-pill { font-size: 11px; padding: 4px 10px; }
  .section-marketing { padding: 40px 0; }
  .section-marketing h2 { font-size: 22px; margin-bottom: 10px; }
  .section-marketing .sub { font-size: 14px; margin-bottom: 24px; }
  .price-banner { padding: 22px 16px; }
  .price-banner .big { font-size: 20px; }
  .price-banner p { font-size: 13px; }
  .category-grid { grid-template-columns: 1fr; gap: 14px; }
  .category-card { padding: 16px; }
  .category-card .img-wrap { height: 110px; border: 1px solid var(--border); }
  .category-card h3 { font-size: 18px; margin-bottom: 8px; }
  .category-card .tag { margin-bottom: 8px; }
  .category-card p { font-size: 13px; line-height: 1.6; }
  .category-card .models { margin-top: 12px; padding-top: 12px; }
  .category-card .models strong { display: block; margin-bottom: 6px; font-size: 12px; }
  .category-card .models span { display: block; font-size: 12px; word-break: break-word; }
  .trust-grid, .how-grid { grid-template-columns: 1fr; gap: 14px; }
  .trust-card, .how-card { padding: 20px; }
  .trust-card .icon { width: 48px; height: 48px; }
  .how-card::before { top: -14px; width: 32px; height: 32px; line-height: 32px; font-size: 13px; }
  .cta-section { padding: 48px 16px; }
  .cta-section h2 { font-size: 22px; }
  .cta-section p { font-size: 14px; }
  .footer-marketing { padding: 32px 16px 24px; }
  .footer-marketing .footer-brand { font-size: 20px; }
}