/* =========================================================
   WPS Office 下载落地站 · 第 1 套 · 主题「现代科技蓝」
   纯手写 CSS3 · 主色 #2563eb→#1e40af · 强调 #38bdf8
   ========================================================= */

:root {
  --blue: #2563eb;
  --blue-dark: #1e40af;
  --blue-deep: #1e3a8a;
  --sky: #38bdf8;
  --sky-soft: #e0f2fe;
  --ink: #0f172a;
  --text: #1f2937;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --bg-soft2: #f1f5f9;
  --white: #ffffff;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06), 0 1px 2px rgba(15, 23, 42, .04);
  --shadow: 0 8px 24px rgba(37, 99, 235, .08), 0 2px 8px rgba(15, 23, 42, .05);
  --shadow-md: 0 14px 40px rgba(37, 99, 235, .14);
  --grad: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
  --grad-soft: linear-gradient(135deg, #eff6ff 0%, #f8fafc 60%, #ffffff 100%);
  --maxw: 1180px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dark); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* keyframes spin (必含) */
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.spinner {
  width: 18px; height: 18px;
  animation: spin 1s linear infinite;
}

/* ---------- 顶部固定导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 12px rgba(15, 23, 42, .05);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  color: var(--ink);
  letter-spacing: .2px;
}
.brand .logo-badge {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: var(--grad);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 14px rgba(37, 99, 235, .35);
}
.brand .logo-badge svg { width: 22px; height: 22px; color: #fff; }
.brand span.accent { color: var(--blue); }
.brand small { display: block; font-size: 11px; font-weight: 500; color: var(--muted); letter-spacing: .5px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links a {
  position: relative;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  border-radius: 8px;
  transition: color .2s ease, background-color .2s ease;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px;
  bottom: 2px;
  height: 3px;
  border-radius: 3px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .25s ease;
}
.nav-links a:hover { color: var(--blue); background: var(--bg-soft); }
.nav-links a.active { color: var(--blue-dark); }
.nav-links a.active::after { transform: scaleX(1); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-left: 8px;
  padding: 9px 18px !important;
  color: #fff !important;
  background: var(--grad);
  border-radius: 10px !important;
  box-shadow: 0 6px 16px rgba(37, 99, 235, .3);
}
.nav-cta::after { display: none; }
.nav-cta:hover { color: #fff !important; filter: brightness(1.05); }
.nav-cta svg { width: 16px; height: 16px; }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  line-height: 1;
  padding: 15px 30px;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, filter .2s ease, background-color .2s ease;
  text-align: center;
}
.btn svg { width: 20px; height: 20px; flex: none; }
.btn:disabled { cursor: progress; opacity: .92; }

.btn-primary {
  color: #fff;
  background: var(--grad);
  box-shadow: 0 10px 26px rgba(37, 99, 235, .35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(37, 99, 235, .42); filter: brightness(1.04); }
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  color: var(--blue-dark);
  background: #fff;
  border: 1.5px solid var(--blue);
  box-shadow: var(--shadow-sm);
}
.btn-ghost:hover { background: var(--sky-soft); transform: translateY(-2px); }

.btn-soft {
  color: var(--blue-dark);
  background: var(--sky-soft);
}
.btn-soft:hover { background: #cfeafe; transform: translateY(-2px); }

.btn-lg { font-size: 18px; padding: 18px 38px; border-radius: 14px; }
.btn-block { display: flex; width: 100%; }

/* ---------- 通用 section ---------- */
.section { padding: 78px 0; }
.section-soft { background: var(--bg-soft); }
.section-soft2 { background: var(--bg-soft2); }

.section-head {
  max-width: 720px;
  margin: 0 auto 48px;
  text-align: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .8px;
  text-transform: uppercase;
  color: var(--blue);
  background: var(--sky-soft);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.eyebrow svg { width: 15px; height: 15px; }
.section-head h2 {
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.25;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -.5px;
}
.section-head p {
  margin-top: 14px;
  font-size: 17px;
  color: var(--muted);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: var(--grad-soft);
  padding: 86px 0 70px;
  text-align: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: "";
  position: absolute;
  top: -160px; left: 50%;
  width: 760px; height: 760px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(56, 189, 248, .22), rgba(37, 99, 235, 0) 62%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue-dark);
  background: #fff;
  border: 1px solid var(--line);
  padding: 8px 16px;
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}
.hero-badge svg { width: 16px; height: 16px; color: var(--blue); }
.hero h1 {
  font-size: clamp(32px, 5.2vw, 56px);
  line-height: 1.14;
  letter-spacing: -1px;
  color: var(--ink);
  font-weight: 800;
  max-width: 900px;
  margin: 0 auto;
}
.hero h1 .grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--blue);
}
.hero .lead {
  max-width: 680px;
  margin: 22px auto 0;
  font-size: clamp(16px, 2vw, 20px);
  color: var(--muted);
}
.hero-actions {
  margin-top: 36px;
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.hero-note svg { width: 15px; height: 15px; color: #16a34a; }

/* Hero 数据小标 */
.hero-stats {
  margin-top: 52px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
}
.hero-stats .stat {
  background: rgba(255, 255, 255, .8);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 14px;
  box-shadow: var(--shadow-sm);
}
.hero-stats .num {
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 800;
  color: var(--blue-dark);
  line-height: 1.1;
}
.hero-stats .label { font-size: 13px; color: var(--muted); margin-top: 6px; }

/* ---------- 数据统计条 ---------- */
.stats-bar { background: var(--grad); color: #fff; padding: 44px 0; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stats-grid .stat-num {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.1;
}
.stats-grid .stat-num small { font-size: 18px; opacity: .9; }
.stats-grid .stat-label { margin-top: 6px; font-size: 14px; color: rgba(255, 255, 255, .82); }
.stats-grid .stat svg { width: 26px; height: 26px; opacity: .9; margin-bottom: 8px; }

/* ---------- 特性卡片 3 列 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: #bfdbfe; }
.feature-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: var(--sky-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  margin-bottom: 18px;
}
.feature-icon svg { width: 28px; height: 28px; }
.feature-card h3 { font-size: 19px; color: var(--ink); font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 15px; color: var(--muted); }

/* ---------- 多平台下载 ---------- */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.platform-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease;
  display: flex;
  flex-direction: column;
}
.platform-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.platform-card .p-icon {
  width: 62px; height: 62px;
  margin: 0 auto 16px;
  border-radius: 16px;
  background: var(--grad);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 8px 18px rgba(37, 99, 235, .28);
}
.platform-card .p-icon svg { width: 32px; height: 32px; }
.platform-card h3 { font-size: 18px; color: var(--ink); font-weight: 700; }
.platform-card .p-meta { font-size: 13px; color: var(--muted); margin: 4px 0 12px; }
.platform-card p { font-size: 14px; color: var(--muted); flex: 1; margin-bottom: 18px; }

/* ---------- 功能详细介绍（左右交替） ---------- */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-bottom: 72px;
}
.feature-row:last-child { margin-bottom: 0; }
.feature-row.reverse .f-media { order: 2; }
.feature-row.reverse .f-text { order: 1; }
.f-text .eyebrow { margin-bottom: 14px; }
.f-text h3 {
  font-size: clamp(22px, 2.6vw, 30px);
  color: var(--ink);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
}
.f-text p { color: var(--muted); font-size: 16px; margin-bottom: 16px; }
.f-list { display: grid; gap: 12px; margin-top: 6px; }
.f-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--text);
}
.f-list li svg { width: 20px; height: 20px; color: var(--blue); flex: none; margin-top: 2px; }

/* 装饰性图文媒体块 */
.f-media {
  position: relative;
  background: var(--grad-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow);
  min-height: 260px;
}
.f-media .mock-window {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.mock-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
}
.mock-bar i { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.mock-bar i:nth-child(1) { background: #f87171; }
.mock-bar i:nth-child(2) { background: #fbbf24; }
.mock-bar i:nth-child(3) { background: #34d399; }
.mock-bar span { margin-left: 8px; font-size: 12px; color: var(--muted); }
.mock-body { padding: 20px; display: grid; gap: 14px; }
.mock-row { display: flex; align-items: center; gap: 12px; }
.mock-row .m-ico {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--sky-soft); color: var(--blue);
  display: inline-flex; align-items: center; justify-content: center; flex: none;
}
.mock-row .m-ico svg { width: 22px; height: 22px; }
.mock-line { flex: 1; }
.mock-line b { display: block; height: 10px; border-radius: 5px; background: #dbeafe; width: 70%; }
.mock-line em { display: block; height: 8px; border-radius: 4px; background: var(--bg-soft2); width: 90%; margin-top: 7px; }

/* ---------- 用户评价 3 列 ---------- */
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform .2s ease, box-shadow .2s ease;
}
.review-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.stars { display: inline-flex; gap: 2px; color: #f59e0b; margin-bottom: 14px; }
.stars svg { width: 18px; height: 18px; }
.review-card p { font-size: 15px; color: var(--text); flex: 1; }
.reviewer { display: flex; align-items: center; gap: 12px; margin-top: 18px; }
.reviewer .avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--grad);
  color: #fff; font-weight: 700; font-size: 16px;
  display: inline-flex; align-items: center; justify-content: center; flex: none;
}
.reviewer b { display: block; font-size: 15px; color: var(--ink); }
.reviewer span { font-size: 13px; color: var(--muted); }

/* ---------- 对比表格 ---------- */
.compare-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  background: #fff;
}
table.compare {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}
table.compare th, table.compare td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
table.compare thead th {
  background: var(--bg-soft);
  color: var(--ink);
  font-weight: 700;
  font-size: 15px;
}
table.compare thead th.col-wps {
  background: var(--grad);
  color: #fff;
}
table.compare tbody tr:last-child td { border-bottom: none; }
table.compare td.feat { font-weight: 600; color: var(--text); }
table.compare td.center, table.compare th.center { text-align: center; }
.tick { color: #16a34a; display: inline-flex; }
.tick svg { width: 20px; height: 20px; }
.cross { color: #cbd5e1; display: inline-flex; }
.cross svg { width: 20px; height: 20px; }
.cell-pill {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--sky-soft);
  color: var(--blue-dark);
}

/* ---------- FAQ 手风琴 ---------- */
.faq-list { max-width: 840px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow .2s ease, border-color .2s ease;
}
.faq-item[open] { border-color: #bfdbfe; box-shadow: var(--shadow); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 24px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .q-ico {
  width: 28px; height: 28px;
  flex: none;
  border-radius: 8px;
  background: var(--sky-soft);
  color: var(--blue);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform .25s ease, background-color .2s ease;
}
.faq-item summary .q-ico svg { width: 18px; height: 18px; }
.faq-item[open] summary .q-ico { transform: rotate(45deg); background: var(--blue); color: #fff; }
.faq-item .faq-body { padding: 0 24px 22px; color: var(--muted); font-size: 15px; }
.faq-item .faq-body p { margin-bottom: 10px; }
.faq-item .faq-body p:last-child { margin-bottom: 0; }

/* ---------- 下载页专用 ---------- */
.dl-hero {
  background: var(--grad-soft);
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--line);
}
.dl-hero-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 40px;
  align-items: center;
}
.dl-main-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 34px;
  box-shadow: var(--shadow-md);
}
.dl-main-card .os-row { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.dl-main-card .os-ico {
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--grad); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 18px rgba(37, 99, 235, .3);
}
.dl-main-card .os-ico svg { width: 30px; height: 30px; }
.dl-main-card h2 { font-size: 24px; color: var(--ink); font-weight: 800; }
.dl-main-card .os-row span { color: var(--muted); font-size: 14px; }
.dl-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 22px 0;
}
.dl-meta .m {
  background: var(--bg-soft);
  border-radius: 10px;
  padding: 12px;
  text-align: center;
}
.dl-meta .m b { display: block; font-size: 15px; color: var(--ink); }
.dl-meta .m span { font-size: 12px; color: var(--muted); }
.dl-reqs { margin-top: 18px; display: grid; gap: 8px; }
.dl-reqs li { display: flex; gap: 9px; font-size: 14px; color: var(--text); }
.dl-reqs li svg { width: 18px; height: 18px; color: var(--blue); flex: none; margin-top: 2px; }

.dl-side h3 { font-size: 22px; color: var(--ink); margin-bottom: 8px; }
.dl-side p { color: var(--muted); margin-bottom: 18px; }
.dl-side .safe-box {
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  gap: 12px;
}
.dl-side .safe-box svg { width: 24px; height: 24px; color: #16a34a; flex: none; }
.dl-side .safe-box b { color: #166534; }
.dl-side .safe-box p { color: #15803d; margin: 4px 0 0; font-size: 14px; }

/* 安装步骤 */
.steps { display: grid; gap: 18px; max-width: 860px; margin: 0 auto; }
.step {
  display: flex;
  gap: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--shadow-sm);
}
.step .step-num {
  width: 40px; height: 40px; flex: none;
  border-radius: 50%;
  background: var(--grad);
  color: #fff;
  font-weight: 800;
  font-size: 17px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 14px rgba(37, 99, 235, .3);
}
.step h4 { font-size: 17px; color: var(--ink); margin-bottom: 6px; }
.step p { font-size: 15px; color: var(--muted); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.two-col h3 { font-size: 20px; color: var(--ink); margin-bottom: 18px; display: flex; align-items: center; gap: 10px; }
.two-col h3 svg { width: 22px; height: 22px; color: var(--blue); }

/* 系统要求列表卡 */
.req-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.req-card h3 { font-size: 19px; color: var(--ink); margin-bottom: 16px; }
.req-card dl { display: grid; grid-template-columns: 140px 1fr; gap: 10px 16px; }
.req-card dt { font-weight: 700; color: var(--muted); font-size: 14px; }
.req-card dd { color: var(--text); font-size: 14px; }

/* 更新日志 */
.changelog { max-width: 860px; margin: 0 auto; position: relative; }
.changelog::before {
  content: "";
  position: absolute;
  left: 13px; top: 6px; bottom: 6px;
  width: 2px;
  background: var(--line);
}
.log-item { position: relative; padding: 0 0 28px 44px; }
.log-item:last-child { padding-bottom: 0; }
.log-item::before {
  content: "";
  position: absolute;
  left: 6px; top: 4px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--blue);
}
.log-item.latest::before { background: var(--blue); box-shadow: 0 0 0 4px var(--sky-soft); }
.log-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.log-head .ver { font-size: 18px; font-weight: 800; color: var(--ink); }
.log-head .tag {
  font-size: 12px; font-weight: 700;
  padding: 2px 10px; border-radius: 999px;
  background: var(--sky-soft); color: var(--blue-dark);
}
.log-head .tag.new { background: #dcfce7; color: #166534; }
.log-head .date { font-size: 13px; color: var(--muted); }
.log-item ul { display: grid; gap: 7px; }
.log-item li { display: flex; gap: 9px; font-size: 14px; color: var(--muted); }
.log-item li svg { width: 16px; height: 16px; color: var(--blue); flex: none; margin-top: 3px; }

/* ---------- CTA 区块 ---------- */
.cta-band {
  background: var(--grad);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 54px 40px;
  text-align: center;
  box-shadow: var(--shadow-md);
}
.cta-band h2 { font-size: clamp(24px, 3.4vw, 34px); font-weight: 800; }
.cta-band p { max-width: 600px; margin: 14px auto 28px; color: rgba(255, 255, 255, .9); font-size: 17px; }
.cta-band .btn-light {
  background: #fff; color: var(--blue-dark);
  box-shadow: 0 12px 28px rgba(0, 0, 0, .2);
}
.cta-band .btn-light:hover { transform: translateY(-2px); background: #f0f9ff; }

/* ---------- 文章排版（zh-cn 软文） ---------- */
.article { max-width: 820px; margin: 0 auto; }
.article .article-section { margin-bottom: 44px; }
.article h2 {
  font-size: clamp(22px, 3vw, 30px);
  color: var(--ink);
  font-weight: 800;
  margin-bottom: 16px;
  scroll-margin-top: 90px;
}
.article h3 { font-size: 20px; color: var(--ink); margin: 24px 0 12px; }
.article p { color: var(--text); font-size: 16.5px; margin-bottom: 16px; }
.article ul.bullet { display: grid; gap: 10px; margin: 4px 0 18px; }
.article ul.bullet li {
  display: flex; gap: 10px; color: var(--text); font-size: 16px;
}
.article ul.bullet li svg { width: 20px; height: 20px; color: var(--blue); flex: none; margin-top: 3px; }
.article .lead-quote {
  border-left: 4px solid var(--blue);
  background: var(--bg-soft);
  padding: 18px 22px;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text);
  font-size: 17px;
  margin: 0 0 26px;
}
.toc {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 26px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 36px;
}
.toc b { display: block; font-size: 15px; color: var(--ink); margin-bottom: 12px; }
.toc ol { list-style: decimal; padding-left: 20px; display: grid; gap: 8px; }
.toc ol li a { font-size: 15px; color: var(--blue); }
.toc ol li a:hover { text-decoration: underline; }

.tips-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin: 8px 0 18px; }
.tip {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.tip .tip-ico {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--sky-soft); color: var(--blue);
  display: inline-flex; align-items: center; justify-content: center; margin-bottom: 12px;
}
.tip .tip-ico svg { width: 22px; height: 22px; }
.tip b { display: block; color: var(--ink); font-size: 16px; margin-bottom: 6px; }
.tip span { color: var(--muted); font-size: 14px; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--ink);
  color: #cbd5e1;
  padding: 56px 0 28px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 36px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.footer-brand .brand { color: #fff; margin-bottom: 14px; }
.footer-brand .brand small { color: #94a3b8; }
.footer-brand p { color: #94a3b8; font-size: 14px; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-col ul { display: grid; gap: 10px; }
.footer-col a { color: #cbd5e1; font-size: 14px; }
.footer-col a:hover { color: var(--sky); }
.footer-safe {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(56, 189, 248, .08);
  border: 1px solid rgba(56, 189, 248, .2);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 28px 0 22px;
}
.footer-safe svg { width: 26px; height: 26px; color: #34d399; flex: none; }
.footer-safe b { color: #fff; }
.footer-safe p { color: #94a3b8; font-size: 14px; margin: 2px 0 0; }
.footer-bottom {
  text-align: center;
  font-size: 13px;
  color: #94a3b8;
  line-height: 1.8;
}
.footer-bottom .disclaimer { max-width: 760px; margin: 0 auto; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .platform-grid { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: 1fr; }
  .feature-row { grid-template-columns: 1fr; gap: 28px; margin-bottom: 48px; }
  .feature-row.reverse .f-media,
  .feature-row.reverse .f-text { order: initial; }
  .dl-hero-grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; gap: 28px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .tips-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-links { gap: 0; }
  .nav-links a { padding: 8px 9px; font-size: 14px; }
  .nav-cta { display: none; }
  .brand small { display: none; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px 16px; }
  .section { padding: 56px 0; }
  .hero { padding: 56px 0 48px; }
  .feature-grid { grid-template-columns: 1fr; }
  .platform-grid { grid-template-columns: 1fr; }
  .dl-meta { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
}

@media (max-width: 420px) {
  .hero-stats { grid-template-columns: 1fr; }
  .req-card dl { grid-template-columns: 1fr; gap: 4px; }
  .req-card dd { margin-bottom: 8px; }
}