/* ============================================================
   CPU-Z中文网 — 原创设计系统
   深色科技风 · 青蓝渐变 · 轻量无依赖
   ============================================================ */

:root {
  --bg: #060a13;
  --bg-2: #0a1120;
  --surface: #0d1526;
  --surface-2: #111b30;
  --line: rgba(125, 150, 190, .16);
  --line-soft: rgba(125, 150, 190, .1);
  --text: #e8eef8;
  --muted: #93a5c2;
  --muted-2: #6b7ea0;
  --accent: #38bdf8;
  --accent-2: #818cf8;
  --ok: #34d399;
  --warn: #fbbf24;
  --danger: #f87171;
  --grad: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 12px 40px rgba(2, 6, 18, .5);
  --shadow-glow: 0 0 0 1px rgba(56, 189, 248, .25), 0 12px 40px rgba(56, 189, 248, .12);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono: "Cascadia Code", Consolas, "JetBrains Mono", "SF Mono", monospace;
  --maxw: 1160px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 92px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; transition: color .2s; }
a:hover { color: #7dd3fc; }

::selection { background: rgba(56, 189, 248, .3); }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 通用文字 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 2px;
  background: var(--grad);
  border-radius: 2px;
}

.sec-title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}
.sec-title em {
  font-style: normal;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sec-lead {
  color: var(--muted);
  max-width: 720px;
  font-size: 16.5px;
}

section { padding: 84px 0; position: relative; }
section.sec-alt { background: var(--bg-2); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }

.sec-head { margin-bottom: 44px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 26px;
  border-radius: 12px;
  font-size: 15.5px;
  font-weight: 600;
  font-family: var(--font);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s, border-color .2s, background .2s;
  white-space: nowrap;
}
.btn svg { flex: none; }
.btn-primary {
  background: var(--grad);
  color: #04101f;
  box-shadow: 0 8px 24px rgba(56, 189, 248, .3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(56, 189, 248, .42); color: #04101f; }
.btn-ghost {
  background: rgba(255, 255, 255, .04);
  border-color: var(--line);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn-sm { padding: 9px 18px; font-size: 14px; border-radius: 10px; }
.btn-lg { padding: 16px 34px; font-size: 17px; border-radius: 14px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background .3s, border-color .3s, box-shadow .3s;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(6, 10, 19, .82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 30px rgba(2, 6, 18, .45);
}
.nav-wrap {
  display: flex;
  align-items: center;
  gap: 30px;
  height: 70px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: .01em;
}
.logo:hover { color: var(--text); }
.logo-mark {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--grad);
  display: grid;
  place-items: center;
  color: #04101f;
  font-size: 18px;
  font-weight: 900;
  box-shadow: 0 4px 14px rgba(56, 189, 248, .35);
}
.logo b {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.main-nav { display: flex; gap: 4px; margin-left: auto; }
.main-nav a {
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 9px;
  transition: color .2s, background .2s;
}
.main-nav a:hover { color: var(--text); background: rgba(255, 255, 255, .05); }
.main-nav a.active { color: var(--accent); background: rgba(56, 189, 248, .1); }
.nav-cta { flex: none; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--text);
  width: 42px; height: 42px;
  cursor: pointer;
  font-size: 18px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 168px 0 96px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -3;
}
.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: .34;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1000px 500px at 15% 0%, rgba(56, 189, 248, .16), transparent 60%),
    radial-gradient(900px 520px at 90% 20%, rgba(129, 140, 248, .14), transparent 60%),
    linear-gradient(180deg, rgba(6, 10, 19, .55) 0%, rgba(6, 10, 19, .88) 62%, var(--bg) 100%);
}
.hero-grid-lines {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(125, 150, 190, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(125, 150, 190, .05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  z-index: -1;
  pointer-events: none;
  animation: orbFloat 12s ease-in-out infinite alternate;
}
.orb-1 { width: 380px; height: 380px; background: rgba(56, 189, 248, .12); top: -120px; left: -80px; }
.orb-2 { width: 420px; height: 420px; background: rgba(129, 140, 248, .11); bottom: -160px; right: -100px; animation-delay: -6s; }
@keyframes orbFloat {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(40px, 26px) scale(1.08); }
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}
.news-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px;
  border-radius: 999px;
  background: rgba(56, 189, 248, .08);
  border: 1px solid rgba(56, 189, 248, .3);
  font-size: 13.5px;
  color: #a5dcfc;
  margin-bottom: 26px;
}
.news-pill .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(56, 189, 248, .6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(56, 189, 248, .55); }
  70% { box-shadow: 0 0 0 9px rgba(56, 189, 248, 0); }
  100% { box-shadow: 0 0 0 0 rgba(56, 189, 248, 0); }
}
.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.015em;
  margin-bottom: 20px;
}
.hero h1 em {
  font-style: normal;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  color: var(--muted);
  font-size: 17.5px;
  max-width: 560px;
  margin-bottom: 32px;
}
.hero-sub strong { color: #c3d3ec; font-weight: 600; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 30px; }
.hero-checks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 240px));
  gap: 10px 24px;
}
.hero-checks li {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 14.5px;
}
.hero-checks li::before {
  content: "✓";
  width: 20px; height: 20px;
  flex: none;
  border-radius: 50%;
  background: rgba(52, 211, 153, .14);
  color: var(--ok);
  font-size: 12px;
  font-weight: 800;
  display: grid;
  place-items: center;
}

/* ---------- Hero 侧：CPU-Z 真实界面截图 ---------- */
.hero-visual { position: relative; }
.hero-visual::before {
  content: "";
  position: absolute;
  inset: -30px -20px;
  background: var(--grad);
  opacity: .14;
  filter: blur(50px);
  border-radius: 40px;
  z-index: -1;
}
.shot-frame {
  margin: 0;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow), 0 0 60px rgba(56, 189, 248, .08);
  overflow: hidden;
  background: var(--surface);
  animation: heroFloat 7s ease-in-out infinite;
}
.shot-frame img { width: 100%; height: auto; display: block; }
@keyframes heroFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.shot-caption {
  margin-top: 14px;
  text-align: center;
  color: var(--muted-2);
  font-size: 13px;
}
.shot-caption b { color: var(--muted); font-weight: 600; }

/* ---------- CPU-Z 程序窗口（纯 CSS 复刻） ---------- */
.app-win {
  background: linear-gradient(180deg, #101a2e 0%, #0b1322 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow), 0 0 60px rgba(56, 189, 248, .06);
  overflow: hidden;
  font-size: 13.5px;
}
.app-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(255, 255, 255, .03);
  border-bottom: 1px solid var(--line-soft);
}
.app-title {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 13px;
  color: #c9d7ee;
}
.app-title .tmark {
  width: 20px; height: 20px;
  border-radius: 6px;
  background: var(--grad);
  color: #04101f;
  font-size: 12px;
  font-weight: 900;
  display: grid;
  place-items: center;
}
.app-dots { display: flex; gap: 6px; }
.app-dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.app-dots i:nth-child(1) { background: #f87171; }
.app-dots i:nth-child(2) { background: #fbbf24; }
.app-dots i:nth-child(3) { background: #34d399; }

.app-tabs {
  display: flex;
  gap: 2px;
  padding: 8px 10px 0;
  border-bottom: 1px solid var(--line-soft);
  overflow-x: auto;
  scrollbar-width: none;
}
.app-tabs::-webkit-scrollbar { display: none; }
.app-tab {
  border: none;
  background: none;
  color: var(--muted);
  font-family: var(--font);
  font-size: 12.5px;
  font-weight: 600;
  padding: 8px 13px;
  border-radius: 9px 9px 0 0;
  cursor: pointer;
  white-space: nowrap;
  transition: color .2s, background .2s;
  border-bottom: 2px solid transparent;
}
.app-tab:hover { color: var(--text); }
.app-tab.is-active {
  color: var(--accent);
  background: rgba(56, 189, 248, .08);
  border-bottom-color: var(--accent);
}

.app-body { padding: 14px 16px 8px; min-height: 330px; }
.app-panel { display: none; animation: panelIn .3s ease; }
.app-panel.is-active { display: block; }
@keyframes panelIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.app-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.app-cols-1 { display: grid; grid-template-columns: 1fr; gap: 12px; }
.app-box {
  background: rgba(255, 255, 255, .025);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  padding: 12px 14px;
}
.app-box h4 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 7px;
}
.app-box h4::after { content: ""; flex: 1; height: 1px; background: var(--line-soft); }
.app-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 3.5px 0;
  font-size: 12.8px;
  border-bottom: 1px dashed rgba(125, 150, 190, .08);
}
.app-row:last-child { border-bottom: none; }
.app-row span { color: var(--muted); }
.app-row b {
  font-family: var(--mono);
  font-weight: 600;
  color: #dbe6f7;
  text-align: right;
  font-size: 12.3px;
}
.app-row b.hl { color: var(--accent); }
.app-note {
  grid-column: 1 / -1;
  color: var(--muted-2);
  font-size: 12px;
  padding: 2px 2px 6px;
}
.app-foot {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 10px 16px;
  border-top: 1px solid var(--line-soft);
  background: rgba(255, 255, 255, .02);
}
.app-btn {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .04);
  color: #c9d7ee;
  font-family: var(--font);
  font-size: 12.5px;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 8px;
  cursor: default;
}
.app-btn.pri { background: var(--grad); color: #04101f; border: none; }

.slot-select {
  display: flex;
  gap: 6px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.slot-chip {
  font-family: var(--mono);
  font-size: 11.5px;
  padding: 3px 11px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: rgba(255, 255, 255, .03);
}
.slot-chip.on { color: var(--accent); border-color: rgba(56, 189, 248, .45); background: rgba(56, 189, 248, .08); }

.bench-score {
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
}
.bench-bar {
  height: 7px;
  border-radius: 6px;
  background: rgba(125, 150, 190, .14);
  overflow: hidden;
  margin-top: 8px;
}
.bench-bar i {
  display: block;
  height: 100%;
  border-radius: 6px;
  background: var(--grad);
  animation: benchFill 1.6s ease both;
}
@keyframes benchFill { from { width: 0; } }

/* ---------- 数据统计条 ---------- */
.stats-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.stat-card {
  text-align: center;
  padding: 30px 18px;
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.stat-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, .35);
  box-shadow: var(--shadow-glow);
}
.stat-num {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 900;
  line-height: 1.15;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-variant-numeric: tabular-nums;
}
.stat-label { color: var(--muted); font-size: 14px; margin-top: 6px; }

/* ---------- 功能卡片 ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.feature-card {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 30px 28px;
  transition: transform .25s, border-color .25s, box-shadow .25s;
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(56, 189, 248, .35);
  box-shadow: var(--shadow-glow);
}
.f-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(56, 189, 248, .1);
  border: 1px solid rgba(56, 189, 248, .25);
  color: var(--accent);
  margin-bottom: 20px;
}
.f-icon svg { width: 26px; height: 26px; }
.feature-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { color: var(--muted); font-size: 14.8px; flex: 1; }
.f-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}
.f-link:hover { gap: 10px; }
.f-link { transition: gap .2s; }

/* ---------- 人群卡片 ---------- */
.person-card {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 24px 22px;
  transition: transform .25s, border-color .25s;
}
.person-card:hover { transform: translateY(-4px); border-color: rgba(129, 140, 248, .4); }
.person-card h3 {
  font-size: 16.5px;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.person-card h3 .p-icon {
  width: 34px; height: 34px;
  flex: none;
  border-radius: 9px;
  background: rgba(129, 140, 248, .12);
  border: 1px solid rgba(129, 140, 248, .28);
  color: #a5b4fc;
  display: grid;
  place-items: center;
  font-size: 16px;
}
.person-card p { color: var(--muted); font-size: 14px; }

/* ---------- 提示卡 ---------- */
.tip-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 26px 26px 24px 30px;
  overflow: hidden;
  transition: transform .25s, border-color .25s;
}
.tip-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--grad);
  opacity: .7;
}
.tip-card:hover { transform: translateY(-4px); border-color: rgba(56, 189, 248, .3); }
.tip-card .t-tag {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: .08em;
  margin-bottom: 8px;
}
.tip-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.tip-card p { color: var(--muted); font-size: 14.5px; }
.tip-card kbd {
  font-family: var(--mono);
  font-size: 12px;
  padding: 1px 7px;
  border-radius: 6px;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  background: rgba(255, 255, 255, .05);
  color: #dbe6f7;
}

/* ---------- 显示 / 不显示 对照 ---------- */
.compare-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.cmp-panel {
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  background: var(--surface);
  padding: 30px 30px 24px;
}
.cmp-panel.yes { border-color: rgba(52, 211, 153, .3); }
.cmp-panel.no { border-color: rgba(248, 113, 113, .3); }
.cmp-head {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 18px;
}
.cmp-head .c-icon {
  width: 38px; height: 38px;
  border-radius: 11px;
  display: grid;
  place-items: center;
}
.yes .c-icon { background: rgba(52, 211, 153, .12); color: var(--ok); }
.no .c-icon { background: rgba(248, 113, 113, .12); color: var(--danger); }
.cmp-list { list-style: none; }
.cmp-list li {
  display: flex;
  gap: 11px;
  align-items: baseline;
  padding: 8px 0;
  color: var(--muted);
  font-size: 14.8px;
  border-bottom: 1px dashed var(--line-soft);
}
.cmp-list li:last-child { border-bottom: none; }
.cmp-list li b { color: #d4e0f2; font-weight: 600; }
.cmp-list li::before { flex: none; font-weight: 800; }
.yes .cmp-list li::before { content: "+"; color: var(--ok); }
.no .cmp-list li::before { content: "−"; color: var(--danger); }

/* ---------- 表格 ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--surface);
}
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.8px;
  min-width: 560px;
}
table.data th {
  text-align: left;
  padding: 14px 20px;
  font-size: 13px;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--muted-2);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .02);
  white-space: nowrap;
}
table.data td {
  padding: 13px 20px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--muted);
}
table.data tr:last-child td { border-bottom: none; }
table.data tbody tr { transition: background .15s; }
table.data tbody tr:hover { background: rgba(56, 189, 248, .05); }
table.data td b { color: #dbe6f7; font-weight: 600; }
table.data td code, .inline-code {
  font-family: var(--mono);
  font-size: 13px;
  color: #7dd3fc;
  background: rgba(56, 189, 248, .08);
  border: 1px solid rgba(56, 189, 248, .18);
  padding: 1px 7px;
  border-radius: 6px;
}
.chip {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(129, 140, 248, .12);
  color: #a5b4fc;
  border: 1px solid rgba(129, 140, 248, .25);
}

/* ---------- 下载卡片 ---------- */
.dl-main {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.dl-info { padding: 40px 40px 34px; }
.dl-info h2 { font-size: 27px; font-weight: 800; margin-bottom: 8px; }
.dl-info .dl-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 24px;
}
.dl-meta span {
  font-size: 13px;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 4px 13px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .03);
}
.dl-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 26px; }
.dl-note {
  color: var(--muted-2);
  font-size: 13.5px;
  border-left: 3px solid rgba(251, 191, 36, .5);
  padding: 4px 0 4px 14px;
}
.dl-note a { text-decoration: underline; text-underline-offset: 3px; }
.dl-side {
  padding: 40px 34px;
  background: linear-gradient(160deg, rgba(56, 189, 248, .07), rgba(129, 140, 248, .07));
  border-left: 1px solid var(--line-soft);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.dl-side h3 { font-size: 16px; font-weight: 700; margin-bottom: 14px; }
.dl-side ul { list-style: none; }
.dl-side li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  color: var(--muted);
  font-size: 14.5px;
  padding: 6px 0;
}
.dl-side li::before { content: "✓"; color: var(--ok); font-weight: 800; flex: none; }

.platform-card {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 28px 26px;
  transition: transform .25s, border-color .25s;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.platform-card:hover { transform: translateY(-4px); border-color: rgba(56, 189, 248, .35); }
.platform-card .p-ver {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: .05em;
}
.platform-card h3 { font-size: 19px; font-weight: 700; }
.platform-card p { color: var(--muted); font-size: 14.5px; flex: 1; }
.p-links { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
.p-link {
  font-size: 13.5px;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: 9px;
  border: 1px solid var(--line);
  color: #c9d7ee;
  transition: border-color .2s, color .2s;
}
.p-link:hover { border-color: var(--accent); color: var(--accent); }
.p-link.solid { background: var(--grad); color: #04101f; border: none; }
.p-link.solid:hover { color: #04101f; transform: translateY(-1px); }

.oem-card {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform .25s, border-color .25s;
}
.oem-card:hover { transform: translateY(-4px); border-color: rgba(129, 140, 248, .4); }
.oem-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.oem-card .oem-ver { font-family: var(--mono); font-size: 12px; color: var(--accent); margin-bottom: 10px; }
.oem-card p { color: var(--muted); font-size: 13.8px; margin-bottom: 14px; }

/* ---------- 步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: step; }
.step-card {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 26px 22px;
  position: relative;
  transition: transform .25s, border-color .25s;
}
.step-card:hover { transform: translateY(-4px); border-color: rgba(56, 189, 248, .35); }
.step-card::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 11px;
  border-radius: 999px;
  background: rgba(56, 189, 248, .1);
  border: 1px solid rgba(56, 189, 248, .3);
}
.step-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.step-card p { color: var(--muted); font-size: 13.8px; }

.steps-3 { grid-template-columns: repeat(3, 1fr); }

/* ---------- FAQ 手风琴 ---------- */
.faq-cats { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 34px; }
.faq-cats a {
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  transition: all .2s;
}
.faq-cats a:hover, .faq-cats a.active { color: var(--accent); border-color: rgba(56, 189, 248, .45); background: rgba(56, 189, 248, .08); }

.faq-group { margin-bottom: 46px; scroll-margin-top: 100px; }
.faq-group > h2 { font-size: 24px; font-weight: 800; margin-bottom: 22px; display: flex; align-items: center; gap: 12px; }
.faq-group > h2::before {
  content: "";
  width: 6px; height: 24px;
  border-radius: 4px;
  background: var(--grad);
}
details.faq-item {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .25s;
}
details.faq-item[open] { border-color: rgba(56, 189, 248, .35); }
details.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 22px;
  font-weight: 600;
  font-size: 15.8px;
  color: #d4e0f2;
  user-select: none;
  transition: color .2s;
}
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item summary:hover { color: var(--accent); }
details.faq-item summary .q-no {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  flex: none;
  width: 32px;
}
details.faq-item summary .chev {
  margin-left: auto;
  flex: none;
  color: var(--muted-2);
  transition: transform .3s;
}
details.faq-item[open] summary .chev { transform: rotate(180deg); color: var(--accent); }
.faq-body {
  padding: 0 22px 20px 68px;
  color: var(--muted);
  font-size: 15px;
}
.faq-body strong { color: #c3d3ec; }
.faq-body code { font-family: var(--mono); font-size: 13px; color: #7dd3fc; }

/* ---------- 名人堂 ---------- */
.hof-list { display: flex; flex-direction: column; gap: 12px; }
.hof-item {
  display: grid;
  grid-template-columns: 52px 1fr auto;
  align-items: center;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  padding: 18px 24px;
  transition: transform .2s, border-color .2s;
}
.hof-item:hover { transform: translateX(5px); border-color: rgba(251, 191, 36, .4); }
.hof-rank {
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 800;
  color: var(--muted-2);
  text-align: center;
}
.hof-item:nth-child(1) .hof-rank { color: var(--warn); }
.hof-item:nth-child(2) .hof-rank { color: #cbd5e1; }
.hof-item:nth-child(3) .hof-rank { color: #d97706; }
.hof-main h3 { font-size: 15.5px; font-weight: 700; }
.hof-main p { color: var(--muted-2); font-size: 13px; font-family: var(--mono); }
.hof-mhz {
  font-family: var(--mono);
  font-size: 24px;
  font-weight: 800;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  white-space: nowrap;
}
.hof-mhz small { font-size: 13px; display: block; text-align: right; color: var(--muted-2); -webkit-text-fill-color: var(--muted-2); font-weight: 500; }

/* ---------- CTA 横幅 ---------- */
.cta-banner {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid rgba(56, 189, 248, .3);
  background:
    radial-gradient(600px 260px at 20% 0%, rgba(56, 189, 248, .16), transparent 60%),
    radial-gradient(600px 300px at 90% 100%, rgba(129, 140, 248, .15), transparent 60%),
    var(--surface);
  padding: 56px 48px;
  text-align: center;
}
.cta-banner h2 { font-size: clamp(24px, 3.4vw, 34px); font-weight: 800; margin-bottom: 14px; }
.cta-banner p { color: var(--muted); max-width: 640px; margin: 0 auto 28px; }
.cta-banner .btn + .btn { margin-left: 6px; }

/* ---------- 面包屑 & 页头 ---------- */
.page-head {
  padding: 148px 0 44px;
  background:
    radial-gradient(800px 320px at 50% 0%, rgba(56, 189, 248, .1), transparent 65%),
    var(--bg-2);
  border-bottom: 1px solid var(--line-soft);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted-2);
  font-size: 13.5px;
  margin-bottom: 18px;
}
.breadcrumb a { color: var(--muted-2); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { opacity: .5; }
.page-head h1 { font-size: clamp(28px, 4.4vw, 42px); font-weight: 900; line-height: 1.28; margin-bottom: 14px; }
.page-head .sec-lead { font-size: 16.5px; }

/* ---------- 指南：字段表 ---------- */
.field-table { border-collapse: collapse; width: 100%; font-size: 14.5px; }
.field-table td { padding: 10px 16px; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
.field-table tr:last-child td { border-bottom: none; }
.field-table td:first-child {
  font-family: var(--mono);
  font-size: 13px;
  color: #7dd3fc;
  white-space: nowrap;
  width: 220px;
}
.field-table td:last-child { color: var(--muted); }

.guide-tab-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.guide-block { margin-bottom: 60px; scroll-margin-top: 100px; }
.guide-block h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.guide-block h2 .g-badge {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  background: rgba(56, 189, 248, .1);
  border: 1px solid rgba(56, 189, 248, .3);
  padding: 3px 12px;
  border-radius: 999px;
}
.guide-block > p { color: var(--muted); margin-bottom: 18px; max-width: 760px; }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line-soft);
  background: var(--bg-2);
  padding: 56px 0 30px;
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 40px;
}
.footer-brand p { color: var(--muted); font-size: 14px; margin-top: 14px; }
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: #d4e0f2;
  margin-bottom: 16px;
  letter-spacing: .04em;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--muted); font-size: 14px; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--line-soft);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted-2);
  font-size: 13px;
}

/* ---------- 回到顶部 ---------- */
.to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  width: 46px; height: 46px;
  border-radius: 13px;
  border: 1px solid var(--line);
  background: rgba(13, 21, 38, .9);
  backdrop-filter: blur(8px);
  color: var(--muted);
  font-size: 18px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s, transform .3s, color .2s, border-color .2s;
  z-index: 90;
}
.to-top.show { opacity: 1; pointer-events: auto; }
.to-top:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-3px); }

/* ---------- 入场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s cubic-bezier(.16, 1, .3, 1), transform .7s cubic-bezier(.16, 1, .3, 1);
}
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; }
.reveal-d4 { transition-delay: .32s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1020px) {
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { max-width: 620px; }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .dl-main { grid-template-columns: 1fr; }
  .dl-side { border-left: none; border-top: 1px solid var(--line-soft); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .guide-tab-intro { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 760px) {
  section { padding: 60px 0; }
  .hero { padding: 132px 0 70px; }
  .nav-toggle { display: grid; place-items: center; margin-left: auto; }
  .main-nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 2px;
    background: rgba(6, 10, 19, .97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    padding: 12px 20px 18px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 14px; }
  .nav-cta { display: none; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .compare-wrap { grid-template-columns: 1fr; }
  .steps, .steps-3 { grid-template-columns: 1fr; }
  .hero-checks { grid-template-columns: 1fr; }
  .stats-band { grid-template-columns: 1fr 1fr; gap: 12px; }
  .app-cols { grid-template-columns: 1fr; }
  .cta-banner { padding: 44px 24px; }
  .hof-item { grid-template-columns: 36px 1fr; }
  .hof-mhz { grid-column: 2; text-align: left; }
  .faq-body { padding-left: 22px; }
  .footer-grid { grid-template-columns: 1fr; }
  .field-table td:first-child { width: auto; }
  .table-wrap { border-radius: 12px; }
}