/* ==========================================================================
   RackNerd 推广站 - 全站样式
   设计方向：深邃科技蓝 + 电光青蓝 + 琥珀橙 CTA 的高端主机品牌质感
   ========================================================================== */

/* ---------- 设计令牌 ---------- */
:root {
  /* 背景色阶 */
  --bg-0: #060912;
  --bg-1: #0a0e1a;
  --bg-2: #0f172a;
  --bg-3: #131c33;
  --surface: #111a2e;
  --surface-2: #16223c;
  --surface-3: #1b294a;

  /* 文字 */
  --text-1: #f1f5f9;
  --text-2: #cbd5e1;
  --text-3: #94a3b8;
  --text-4: #64748b;

  /* 强调色 */
  --cyan: #22d3ee;
  --cyan-2: #06b6d4;
  --cyan-soft: rgba(34, 211, 238, 0.12);
  --amber: #f59e0b;
  --amber-2: #fbbf24;
  --amber-soft: rgba(245, 158, 11, 0.14);
  --green: #34d399;
  --red: #f87171;

  /* 边框 */
  --border: rgba(148, 163, 184, 0.14);
  --border-2: rgba(148, 163, 184, 0.22);
  --border-cyan: rgba(34, 211, 238, 0.35);

  /* 渐变 */
  --grad-hero: radial-gradient(120% 120% at 50% 0%, #15244a 0%, #0a0e1a 55%, #060912 100%);
  --grad-cyan: linear-gradient(135deg, #22d3ee 0%, #06b6d4 100%);
  --grad-amber: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  --grad-card: linear-gradient(180deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0) 100%);

  /* 字体 */
  --font-display: "Sora", "Noto Sans SC", system-ui, sans-serif;
  --font-body: "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.45);
  --shadow-cyan: 0 12px 40px rgba(34, 211, 238, 0.22);
  --shadow-amber: 0 12px 40px rgba(245, 158, 11, 0.28);

  /* 圆角 */
  --r-sm: 8px;
  --r: 14px;
  --r-lg: 20px;
  --r-pill: 999px;

  /* 容器 */
  --container: 1200px;
  --nav-h: 68px;
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--bg-1);
  color: var(--text-2);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 排版 ---------- */
h1, h2, h3, h4 { font-family: var(--font-display); color: var(--text-1); line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.45rem); }
p { color: var(--text-3); }
.text-cyan { color: var(--cyan); }
.text-amber { color: var(--amber); }
.gradient-text {
  background: var(--grad-cyan);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.gradient-amber-text {
  background: var(--grad-amber);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- 布局 ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; position: relative; }
.section-sm { padding: 56px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.section-head .eyebrow {
  display: inline-block; font-family: var(--font-display); font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--cyan);
  padding: 6px 14px; border: 1px solid var(--border-cyan); border-radius: var(--r-pill);
  background: var(--cyan-soft); margin-bottom: 18px;
}
.section-head p { margin-top: 14px; font-size: 1.05rem; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; height: var(--nav-h); z-index: 100;
  background: rgba(10, 14, 26, 0.72); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border); transition: background 0.3s, border-color 0.3s;
}
.nav.scrolled { background: rgba(10, 14, 26, 0.92); border-bottom-color: var(--border-2); }
.nav-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 1.25rem; color: var(--text-1); }
.brand-logo {
  width: 34px; height: 34px; border-radius: 9px; background: var(--grad-cyan);
  display: grid; place-items: center; color: var(--bg-1); font-weight: 800; font-size: 1rem;
  box-shadow: var(--shadow-cyan);
}
.brand span { color: var(--cyan); }
.brand-logo-img { height: 40px; width: auto; display: block; border-radius: 8px; }
.footer .brand-logo-img { height: 34px; opacity: 0.95; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  padding: 8px 14px; border-radius: var(--r-sm); font-size: 0.93rem; color: var(--text-3);
  transition: color 0.2s, background 0.2s; font-weight: 500;
}
.nav-links a:hover, .nav-links a.active { color: var(--text-1); background: var(--surface-2); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.lang-switch {
  display: flex; align-items: center; gap: 6px; padding: 6px 12px; border: 1px solid var(--border-2);
  border-radius: var(--r-pill); font-size: 0.85rem; color: var(--text-3); transition: all 0.2s;
}
.lang-switch:hover { color: var(--cyan); border-color: var(--border-cyan); }
.lang-switch svg { width: 15px; height: 15px; }
.nav-toggle { display: none; width: 44px; height: 44px; border-radius: var(--r-sm); color: var(--text-1); }
.nav-toggle svg { width: 24px; height: 24px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 24px; border-radius: var(--r-pill); font-family: var(--font-display); font-weight: 600;
  font-size: 0.95rem; transition: transform 0.2s, box-shadow 0.2s, background 0.2s; white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--grad-amber); color: #1a1206; box-shadow: var(--shadow-amber); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 50px rgba(245, 158, 11, 0.4); }
.btn-cyan { background: var(--grad-cyan); color: var(--bg-1); box-shadow: var(--shadow-cyan); }
.btn-cyan:hover { transform: translateY(-2px); box-shadow: 0 16px 50px rgba(34, 211, 238, 0.36); }
.btn-ghost { border: 1px solid var(--border-2); color: var(--text-1); background: var(--surface); }
.btn-ghost:hover { border-color: var(--border-cyan); color: var(--cyan); transform: translateY(-2px); }
.btn-block { width: 100%; }
.btn-lg { padding: 15px 32px; font-size: 1.05rem; }

/* ---------- Hero ---------- */
.hero {
  position: relative; padding: calc(var(--nav-h) + 80px) 0 80px; overflow: hidden;
  background: var(--grad-hero);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(34, 211, 238, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, 0.06) 1px, transparent 1px);
  background-size: 56px 56px; mask-image: radial-gradient(80% 60% at 50% 30%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(80% 60% at 50% 30%, #000 30%, transparent 75%);
}
.hero::after {
  content: ""; position: absolute; top: -20%; right: -10%; width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.16) 0%, transparent 60%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px; border-radius: var(--r-pill);
  background: var(--amber-soft); border: 1px solid rgba(245, 158, 11, 0.3); color: var(--amber-2);
  font-size: 0.85rem; font-weight: 600; margin-bottom: 26px;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.2); animation: pulse 2s infinite; }
.hero h1 { margin-bottom: 22px; }
.hero h1 .line { display: block; opacity: 0; transform: translateY(24px); animation: rise 0.7s forwards; }
.hero h1 .line:nth-child(2) { animation-delay: 0.12s; }
.hero h1 .line:nth-child(3) { animation-delay: 0.24s; }
.hero-lead { font-size: 1.12rem; color: var(--text-3); max-width: 540px; margin-bottom: 32px; opacity: 0; animation: rise 0.7s 0.36s forwards; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; opacity: 0; animation: rise 0.7s 0.48s forwards; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 36px; opacity: 0; animation: rise 0.7s 0.6s forwards; }
.hero-trust .item { display: flex; align-items: center; gap: 8px; font-size: 0.88rem; color: var(--text-3); }
.hero-trust svg { width: 18px; height: 18px; color: var(--cyan); }

/* Hero 浮动卡 */
.hero-card {
  background: var(--grad-card); border: 1px solid var(--border-2); border-radius: var(--r-lg);
  padding: 28px; box-shadow: var(--shadow-lg); position: relative;
  opacity: 0; transform: translateY(30px) scale(0.97); animation: rise 0.8s 0.5s forwards;
}
.hero-card::before {
  content: ""; position: absolute; inset: -1px; border-radius: var(--r-lg); padding: 1px;
  background: linear-gradient(135deg, var(--border-cyan), transparent 50%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none;
}
.hero-card .tag { display: inline-flex; align-items: center; gap: 6px; font-size: 0.78rem; font-weight: 600; color: var(--cyan); letter-spacing: 0.06em; text-transform: uppercase; }
.hero-card .price-big { font-family: var(--font-display); font-size: 3rem; font-weight: 800; color: var(--text-1); line-height: 1; margin: 14px 0 4px; }
.hero-card .price-big small { font-size: 1.1rem; color: var(--text-3); font-weight: 500; }
.hero-card .price-sub { color: var(--text-3); font-size: 0.92rem; margin-bottom: 22px; }
.hero-card ul { display: grid; gap: 11px; margin-bottom: 24px; }
.hero-card li { display: flex; align-items: center; gap: 10px; font-size: 0.94rem; color: var(--text-2); }
.hero-card li svg { width: 17px; height: 17px; color: var(--green); flex-shrink: 0; }
.hero-card .meta { display: flex; gap: 8px; padding-top: 18px; border-top: 1px solid var(--border); font-size: 0.8rem; color: var(--text-4); }
.hero-card .meta b { color: var(--text-2); font-weight: 600; }

@keyframes rise { to { opacity: 1; transform: translateY(0) scale(1); } }
@keyframes pulse { 50% { box-shadow: 0 0 0 8px rgba(245, 158, 11, 0); } }

/* ---------- 统计条 ---------- */
.stats { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--bg-2); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stats-grid .item { text-align: center; padding: 34px 16px; border-right: 1px solid var(--border); }
.stats-grid .item:last-child { border-right: none; }
.stats-grid .num { font-family: var(--font-display); font-size: 2.3rem; font-weight: 800; color: var(--cyan); line-height: 1; }
.stats-grid .label { font-size: 0.88rem; color: var(--text-3); margin-top: 8px; }

/* ---------- 优惠套餐卡 ---------- */
.plans { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.plan-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 26px 22px; display: flex; flex-direction: column; position: relative; transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.plan-card:hover { transform: translateY(-6px); border-color: var(--border-cyan); box-shadow: var(--shadow); }
.plan-card.featured { border-color: var(--cyan); background: linear-gradient(180deg, var(--cyan-soft) 0%, var(--surface) 40%); box-shadow: var(--shadow-cyan); }
.plan-card .ribbon {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--grad-amber); color: #1a1206; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.05em;
  padding: 5px 14px; border-radius: var(--r-pill); text-transform: uppercase; white-space: nowrap;
}
.plan-card .name { font-family: var(--font-display); font-weight: 700; color: var(--text-1); font-size: 1.15rem; }
.plan-card .desc { font-size: 0.83rem; color: var(--text-4); margin: 4px 0 16px; }
.plan-card .price { font-family: var(--font-display); font-size: 2.1rem; font-weight: 800; color: var(--text-1); line-height: 1; }
.plan-card .price small { font-size: 0.95rem; color: var(--text-3); font-weight: 500; }
.plan-card .price-orig { font-size: 0.82rem; color: var(--text-4); text-decoration: line-through; margin-top: 6px; }
.plan-card ul { display: grid; gap: 9px; margin: 20px 0 24px; flex: 1; }
.plan-card li { display: flex; align-items: flex-start; gap: 8px; font-size: 0.86rem; color: var(--text-2); }
.plan-card li svg { width: 16px; height: 16px; color: var(--cyan); flex-shrink: 0; margin-top: 3px; }

/* ---------- 产品矩阵 ---------- */
.products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product-card {
  background: var(--grad-card); border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 34px 28px; transition: transform 0.25s, border-color 0.25s; position: relative; overflow: hidden;
}
.product-card:hover { transform: translateY(-6px); border-color: var(--border-cyan); }
.product-card::after {
  content: ""; position: absolute; top: -40px; right: -40px; width: 160px; height: 160px;
  border-radius: 50%; background: var(--cyan-soft); transition: transform 0.4s;
}
.product-card:hover::after { transform: scale(1.4); }
.product-card .icon {
  width: 54px; height: 54px; border-radius: var(--r); background: var(--cyan-soft); border: 1px solid var(--border-cyan);
  display: grid; place-items: center; color: var(--cyan); margin-bottom: 22px; position: relative; z-index: 1;
}
.product-card .icon svg { width: 28px; height: 28px; }
.product-card h3 { margin-bottom: 8px; position: relative; z-index: 1; }
.product-card .from { color: var(--text-4); font-size: 0.85rem; margin-bottom: 18px; position: relative; z-index: 1; }
.product-card .from b { color: var(--amber); font-family: var(--font-display); font-size: 1.4rem; font-weight: 800; }
.product-card p { font-size: 0.92rem; margin-bottom: 22px; position: relative; z-index: 1; }
.product-card .features { display: grid; gap: 8px; margin-bottom: 26px; position: relative; z-index: 1; }
.product-card .features li { display: flex; align-items: center; gap: 8px; font-size: 0.86rem; color: var(--text-3); }
.product-card .features svg { width: 15px; height: 15px; color: var(--green); }
.product-card .link { display: inline-flex; align-items: center; gap: 6px; color: var(--cyan); font-weight: 600; font-size: 0.92rem; position: relative; z-index: 1; }
.product-card .link svg { width: 16px; height: 16px; transition: transform 0.2s; }
.product-card .link:hover svg { transform: translateX(4px); }

/* ---------- 优势网格 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.adv-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r);
  padding: 28px; transition: border-color 0.25s, transform 0.25s;
}
.adv-card:hover { border-color: var(--border-cyan); transform: translateY(-4px); }
.adv-card .icon {
  width: 46px; height: 46px; border-radius: 12px; background: var(--cyan-soft);
  display: grid; place-items: center; color: var(--cyan); margin-bottom: 18px;
}
.adv-card .icon svg { width: 24px; height: 24px; }
.adv-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.adv-card p { font-size: 0.9rem; }

/* ---------- 数据中心 ---------- */
.dc-wrap { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 40px; }
.dc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.dc-item {
  display: flex; align-items: center; gap: 10px; padding: 14px 16px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--r-sm); font-size: 0.9rem; color: var(--text-2); transition: all 0.2s;
}
.dc-item:hover { border-color: var(--border-cyan); color: var(--text-1); transform: translateY(-2px); }
.dc-item svg { width: 18px; height: 18px; color: var(--cyan); flex-shrink: 0; }
.dc-item .region { margin-left: auto; font-size: 0.75rem; color: var(--text-4); }

/* ---------- 测评摘要 ---------- */
.review-summary { display: grid; grid-template-columns: 1.3fr 1fr; gap: 28px; align-items: stretch; }
.review-highlight {
  background: var(--grad-card); border: 1px solid var(--border-2); border-radius: var(--r-lg); padding: 36px;
  position: relative; overflow: hidden;
}
.review-highlight::before {
  content: "\201C"; position: absolute; top: -20px; right: 20px; font-family: var(--font-display);
  font-size: 9rem; color: var(--cyan-soft); line-height: 1;
}
.review-highlight .verdict { font-family: var(--font-display); font-size: 1.4rem; color: var(--text-1); margin-bottom: 14px; position: relative; }
.review-highlight p { position: relative; }
.review-meta { display: flex; align-items: center; gap: 12px; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--border); }
.review-meta .avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--grad-cyan); display: grid; place-items: center; color: var(--bg-1); font-weight: 700; }
.review-meta b { color: var(--text-1); font-size: 0.9rem; }
.review-meta span { display: block; font-size: 0.78rem; color: var(--text-4); }

.review-scores { display: grid; gap: 16px; }
.score-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r); padding: 22px; }
.score-card .top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 12px; }
.score-card .label { font-size: 0.9rem; color: var(--text-2); }
.score-card .val { font-family: var(--font-display); font-weight: 700; color: var(--cyan); }
.bar { height: 7px; background: var(--bg-3); border-radius: var(--r-pill); overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--grad-cyan); border-radius: var(--r-pill); width: 0; transition: width 1.2s ease; }
.unlock-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.tag-pill { padding: 5px 12px; border-radius: var(--r-pill); font-size: 0.8rem; font-weight: 600; background: var(--green); color: #04220f; }
.tag-pill.dim { background: var(--surface-3); color: var(--text-3); }

/* ---------- FAQ ---------- */
.faq-list { display: grid; gap: 14px; max-width: 820px; margin: 0 auto; }
.faq-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r); overflow: hidden; transition: border-color 0.2s; }
.faq-item.open { border-color: var(--border-cyan); }
.faq-q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; text-align: left; color: var(--text-1); font-family: var(--font-display); font-weight: 600; font-size: 1rem; }
.faq-q .icon { width: 24px; height: 24px; color: var(--cyan); flex-shrink: 0; transition: transform 0.3s; display: grid; place-items: center; }
.faq-item.open .faq-q .icon { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-a-inner { padding: 0 24px 22px; color: var(--text-3); font-size: 0.95rem; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--r-lg); }
.tbl { width: 100%; min-width: 720px; }
.tbl thead th {
  background: var(--bg-3); color: var(--text-2); font-family: var(--font-display); font-weight: 600;
  font-size: 0.88rem; text-align: left; padding: 16px 20px; border-bottom: 1px solid var(--border-2); white-space: nowrap;
}
.tbl tbody td { padding: 16px 20px; border-bottom: 1px solid var(--border); font-size: 0.92rem; color: var(--text-2); }
.tbl tbody tr:last-child td { border-bottom: none; }
.tbl tbody tr { transition: background 0.15s; }
.tbl tbody tr:hover { background: var(--surface-2); }
.tbl .num-cell { font-family: var(--font-display); font-weight: 700; color: var(--text-1); }
.tbl .price-cell { font-family: var(--font-display); font-weight: 800; color: var(--amber); white-space: nowrap; }
.tbl .soldout { color: var(--text-4); font-size: 0.82rem; }

/* ---------- 页面通用 hero (内页) ---------- */
.page-hero { padding: calc(var(--nav-h) + 60px) 0 48px; background: var(--grad-hero); position: relative; overflow: hidden; border-bottom: 1px solid var(--border); }
.page-hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(34, 211, 238, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(34, 211, 238, 0.05) 1px, transparent 1px);
  background-size: 56px 56px; mask-image: radial-gradient(70% 60% at 50% 0%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(70% 60% at 50% 0%, #000 20%, transparent 75%);
}
.page-hero .inner { position: relative; z-index: 2; max-width: 760px; }
.page-hero .eyebrow { display: inline-block; font-family: var(--font-display); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: var(--cyan); margin-bottom: 16px; }
.page-hero h1 { margin-bottom: 16px; }
.page-hero p { font-size: 1.08rem; max-width: 620px; }

/* ---------- CTA 条 ---------- */
.cta-band { position: relative; overflow: hidden; background: var(--grad-cyan); border-radius: var(--r-lg); padding: 48px; text-align: center; }
.cta-band::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 30% 20%, rgba(255,255,255,0.2), transparent 50%); }
.cta-band h2 { color: var(--bg-1); position: relative; margin-bottom: 12px; }
.cta-band p { color: rgba(6, 15, 30, 0.75); position: relative; margin-bottom: 26px; font-weight: 500; }
.cta-band .btn { position: relative; background: var(--bg-1); color: var(--cyan); }
.cta-band .btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

/* ---------- 测评页数据卡 ---------- */
.bench-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.bench-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r); padding: 24px; }
.bench-card .k { font-size: 0.85rem; color: var(--text-3); margin-bottom: 8px; }
.bench-card .v { font-family: var(--font-display); font-size: 1.7rem; font-weight: 800; color: var(--text-1); }
.bench-card .v small { font-size: 0.9rem; color: var(--text-3); font-weight: 500; }
.bench-card .sub { font-size: 0.82rem; color: var(--text-4); margin-top: 6px; }

.route-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r); padding: 24px; }
.route-card h4 { font-family: var(--font-display); color: var(--text-1); font-size: 1.05rem; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.route-card h4 .badge { font-size: 0.72rem; padding: 3px 10px; border-radius: var(--r-pill); background: var(--cyan-soft); color: var(--cyan); font-weight: 600; }
.route-card p { font-size: 0.9rem; }

/* ---------- 关于页 ---------- */
.about-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 40px; align-items: start; }
.about-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 32px; }
.about-card h3 { margin-bottom: 12px; }
.about-card p { margin-bottom: 14px; }
.about-card ul { display: grid; gap: 10px; margin-top: 16px; }
.about-card li { display: flex; gap: 10px; font-size: 0.92rem; color: var(--text-2); }
.about-card li svg { width: 18px; height: 18px; color: var(--cyan); flex-shrink: 0; margin-top: 3px; }

/* ---------- 页脚 ---------- */
.footer { background: var(--bg-0); border-top: 1px solid var(--border); padding: 64px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 44px; }
.footer .brand { margin-bottom: 16px; }
.footer-about p { font-size: 0.9rem; max-width: 320px; }
.footer-col h4 { font-family: var(--font-display); color: var(--text-1); font-size: 0.95rem; margin-bottom: 18px; }
.footer-col ul { display: grid; gap: 10px; }
.footer-col a { font-size: 0.88rem; color: var(--text-3); transition: color 0.2s; }
.footer-col a:hover { color: var(--cyan); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; padding-top: 24px; border-top: 1px solid var(--border); font-size: 0.84rem; color: var(--text-4); }
.footer-bottom .disc { max-width: 640px; }

/* ---------- 滚动入场 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .plans { grid-template-columns: repeat(2, 1fr); }
  .products { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .dc-grid { grid-template-columns: repeat(3, 1fr); }
  .review-summary { grid-template-columns: 1fr; }
  .bench-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid .item:nth-child(2) { border-right: none; }
  .stats-grid .item:nth-child(1), .stats-grid .item:nth-child(2) { border-bottom: 1px solid var(--border); }
}

@media (max-width: 768px) {
  .nav-links { position: fixed; top: var(--nav-h); left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; background: var(--bg-1); border-bottom: 1px solid var(--border); padding: 10px 16px; transform: translateY(-130%); transition: transform 0.35s; box-shadow: var(--shadow-lg); max-height: calc(100vh - var(--nav-h)); overflow-y: auto; }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 14px 12px; border-radius: var(--r-sm); font-size: 1rem; }
  .nav-toggle { display: grid; place-items: center; }
  .nav-cta .btn:not(.lang-switch) { display: none; }
  .section { padding: 60px 0; }
  .plans { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: 1fr; }
  .dc-grid { grid-template-columns: 1fr 1fr; }
  .dc-wrap { padding: 24px; }
  .cta-band { padding: 32px 22px; }
  .hero-card { padding: 22px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .bench-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .review-highlight { padding: 24px 20px; }
  .page-hero p { font-size: 0.98rem; }
}

/* ---------- 超窄屏优化 ---------- */
@media (max-width: 380px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 1.85rem; }
  .hero-card .price-big { font-size: 2.4rem; }
  .stats-grid .num { font-size: 1.8rem; }
  .dc-grid { grid-template-columns: 1fr; }
  .btn { padding: 10px 18px; font-size: 0.88rem; }
  .lang-switch { padding: 6px 10px; font-size: 0.8rem; }
  .lang-switch svg { width: 13px; height: 13px; }
}

/* ---------- 无障碍：减少动画 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .hero h1 .line, .hero-lead, .hero-actions, .hero-trust, .hero-card {
    opacity: 1 !important;
    transform: none !important;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* ---------- 文本溢出保护 ---------- */
p, li, td, .faq-a-inner { overflow-wrap: break-word; word-break: break-word; }
.tbl { word-break: normal; }