/* ============================================================
   suanzhangruanjian.com — 算账软件下载站样式
   浅色简洁软件站：白/浅灰背景 + 科技蓝点缀
   ============================================================ */

/* ---------- 字体 ---------- */
@font-face {
  font-family: "Inter";
  src: url("fonts/inter.woff2") format("woff2-variations");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

/* ---------- 设计变量 ---------- */
:root {
  --bg: #f6f8fc;
  --bg-soft: #eef2f9;
  --surface: #ffffff;
  --border: #e4e9f2;
  --border-strong: #d3dcea;
  --text: #1c2433;
  --muted: #5c6b84;
  --primary: #2563eb;
  --primary-dark: #1d4fd8;
  --primary-soft: #eaf1fe;
  --indigo: #4f46e5;
  --green: #15803d;
  --green-soft: #e9f6ee;
  --orange: #b45309;
  --orange-soft: #fdf3e2;
  --red: #b91c1c;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(28, 36, 51, .05), 0 1px 3px rgba(28, 36, 51, .06);
  --shadow-md: 0 8px 28px rgba(28, 36, 51, .08);
  --shadow-lg: 0 16px 48px rgba(37, 99, 235, .14);
  --font: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
}

/* ---------- 基础 ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img, svg { vertical-align: middle; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
ul, ol { list-style: none; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
main { min-height: 60vh; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(135deg, #2b6cf0, #1d4fd8);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, .32);
}
.btn-primary:hover { color: #fff; transform: translateY(-1px); box-shadow: 0 8px 22px rgba(37, 99, 235, .4); }
.btn-outline {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }
.btn-white {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(15, 40, 100, .25);
}
.btn-white:hover { color: var(--primary); transform: translateY(-1px); }
.btn-lg { padding: 15px 34px; font-size: 16px; border-radius: 12px; }
.btn-sm { padding: 8px 16px; font-size: 14px; border-radius: 8px; }
.btn-block { width: 100%; }

/* ---------- 顶栏 ---------- */
.topbar { background: var(--primary); color: #eaf1fe; font-size: 13px; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; min-height: 34px; gap: 12px; }
.topbar-tg { color: #fff; font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.topbar-tg:hover { color: #fff; text-decoration: underline; }
@media (max-width: 720px) { .topbar-item { display: none; } .topbar-inner { justify-content: center; } }

/* ---------- 头部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .2s ease;
}
.site-header.is-scrolled { box-shadow: var(--shadow-sm); }
.nav-inner { display: flex; align-items: center; gap: 18px; height: 66px; }
.nav-logo { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark { display: inline-flex; filter: drop-shadow(0 2px 6px rgba(37, 99, 235, .35)); }
.logo-text { font-size: 19px; font-weight: 800; color: var(--text); letter-spacing: .5px; }
.logo-text em {
  font-style: normal;
  font-size: 11px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-soft);
  border: 1px solid #d4e2fb;
  border-radius: 6px;
  padding: 2px 6px;
  margin-left: 6px;
  vertical-align: 3px;
}
.site-nav { flex: 1; }
.nav-links { display: flex; align-items: center; gap: 2px; justify-content: center; flex-wrap: wrap; }
.nav-links a {
  display: block;
  padding: 8px 11px;
  border-radius: 8px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--muted);
  transition: color .15s ease, background .15s ease;
}
.nav-links a:hover { color: var(--primary); background: var(--primary-soft); }
.nav-links a.is-active { color: var(--primary); font-weight: 700; background: var(--primary-soft); }
.nav-right { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav-toggle {
  display: none;
  border: none;
  background: none;
  color: var(--text);
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
}
.nav-toggle:hover { background: var(--bg-soft); }

/* ---------- 移动端菜单 ---------- */
@media (max-width: 1080px) {
  .nav-cta { display: none; }
}
@media (max-width: 980px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    display: none;
  }
  .site-nav.is-open { display: block; }
  .nav-links { flex-direction: column; align-items: stretch; padding: 10px 20px 16px; gap: 2px; }
  .nav-links a { padding: 11px 12px; font-size: 15px; }
}

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(900px 380px at 85% -10%, rgba(37, 99, 235, .12), transparent 60%),
    radial-gradient(700px 320px at -10% 110%, rgba(79, 70, 229, .08), transparent 60%),
    linear-gradient(180deg, #fbfcff, var(--bg));
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 48px;
  align-items: center;
  padding: 64px 0 72px;
}
.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-dark);
  background: var(--primary-soft);
  border: 1px solid #d4e2fb;
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 18px;
}
.hero-chip .dot { width: 8px; height: 8px; border-radius: 50%; background: #22c55e; animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }
.hero h1 { font-size: 42px; line-height: 1.28; font-weight: 800; letter-spacing: -.5px; }
.hero h1 .hl { color: var(--primary); }
.hero-sub { margin: 18px 0 28px; font-size: 17px; color: var(--muted); max-width: 560px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 26px; }
.hero-trust li { display: inline-flex; align-items: center; gap: 7px; font-size: 14px; font-weight: 500; color: var(--text); }
.hero-trust .ic { color: var(--green); }

/* Hero 软件窗口模拟 */
.hero-panel { position: relative; }
.window {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: #fafbfe;
}
.window-bar .dot { width: 11px; height: 11px; border-radius: 50%; }
.window-bar .dot.r { background: #f87171; } .window-bar .dot.y { background: #fbbf24; } .window-bar .dot.g { background: #34d399; }
.window-bar .title { margin-left: 8px; font-size: 13px; color: var(--muted); font-weight: 600; }
.window-body { padding: 18px 20px 20px; }
.window-kpi { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.kpi {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
}
.kpi b { display: block; font-size: 18px; color: var(--text); }
.kpi span { font-size: 12px; color: var(--muted); }
.window-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.window-table th { text-align: left; color: var(--muted); font-weight: 600; padding: 7px 6px; border-bottom: 1px solid var(--border); font-size: 12px; }
.window-table td { padding: 8px 6px; border-bottom: 1px dashed var(--border); }
.window-table .win { color: var(--green); font-weight: 700; }
.window-table .lose { color: var(--red); font-weight: 700; }
.window-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--primary-dark);
  background: var(--primary-soft);
  border-radius: 8px;
  padding: 7px 12px;
}
.window-float {
  position: absolute;
  right: -14px;
  top: -16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.window-float .ic { color: var(--green); }

/* ---------- 通用区块 ---------- */
.section { padding: 72px 0; }
.section-alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.sec-head { max-width: 720px; margin: 0 auto 42px; text-align: center; }
.kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
  text-transform: uppercase;
  background: var(--primary-soft);
  border-radius: 999px;
  padding: 4px 14px;
  margin-bottom: 12px;
}
.sec-head h2 { font-size: 30px; font-weight: 800; letter-spacing: -.3px; }
.sec-sub { margin-top: 10px; color: var(--muted); font-size: 15.5px; }

/* ---------- 卖点卡片 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  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: #c9d8f5; }
.feature-card .ic-box {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  background: var(--primary-soft);
  margin-bottom: 16px;
}
.feature-card .ic-box svg { width: 26px; height: 26px; }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14.5px; color: var(--muted); }

/* ---------- 产品矩阵 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: #c9d8f5; }
.product-card .p-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.product-card .p-name { font-size: 18px; font-weight: 700; }
.version-tag {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--primary-dark);
  background: var(--primary-soft);
  border: 1px solid #d4e2fb;
  border-radius: 6px;
  padding: 3px 8px;
  white-space: nowrap;
}
.product-card p { font-size: 14px; color: var(--muted); flex: 1; }
.product-card .p-meta { font-size: 12.5px; color: var(--muted); display: flex; gap: 14px; flex-wrap: wrap; }
.product-card .p-meta span { display: inline-flex; align-items: center; gap: 5px; }
.product-card .p-meta .ic { color: var(--green); }
.product-card .p-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.product-card .p-link .ic { transition: transform .18s ease; }
.product-card:hover .p-link .ic { transform: translateX(3px); }

/* ---------- 平台 / 场景 ---------- */
.platform-row { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.platform-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 10px 20px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
}
.platform-chip .ic { color: var(--primary); }
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.scene-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  position: relative;
  overflow: hidden;
}
.scene-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, #2b6cf0, var(--indigo));
}
.scene-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.scene-card p { font-size: 14px; color: var(--muted); }

/* ---------- 下载 / 版本区块 ---------- */
.dl-wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 26px; align-items: stretch; }
.dl-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
}
.dl-card .dl-ver { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.dl-card .dl-ver h3 { font-size: 20px; font-weight: 800; }
.dl-card .dl-ver .version-tag { font-size: 13px; padding: 5px 12px; }
.dl-card ul { margin-bottom: 22px; }
.dl-card ul li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14.5px;
  color: var(--text);
  padding: 7px 0;
}
.dl-card ul .ic { color: var(--green); flex-shrink: 0; margin-top: 3px; }
.sys-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.sys-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  text-align: center;
}
.sys-item .ic { color: var(--primary); display: block; margin-bottom: 6px; }
.sys-item b { display: block; font-size: 14px; }
.sys-item span { font-size: 12px; color: var(--muted); }

/* ---------- 步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  position: relative;
}
.step-card::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: -14px;
  left: 20px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2b6cf0, #1d4fd8);
  color: #fff;
  font-weight: 800;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(37, 99, 235, .35);
}
.step-card h3 { font-size: 16px; font-weight: 700; margin: 10px 0 6px; }
.step-card p { font-size: 13.5px; color: var(--muted); }

/* ---------- FAQ 手风琴 ---------- */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.faq-item.is-open { border-color: #bcd0f7; box-shadow: var(--shadow-sm); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 22px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  font-family: inherit;
}
.faq-q:hover { color: var(--primary); }
.faq-chev {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg);
  transition: transform .25s ease, border-color .25s ease;
  margin-top: -4px;
}
.faq-item.is-open .faq-chev { transform: rotate(-135deg); border-color: var(--primary); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a-inner { padding: 0 22px 20px; font-size: 14.5px; color: var(--muted); }
.faq-a-inner p + p { margin-top: 8px; }

/* ---------- CTA 横幅 ---------- */
.cta-band {
  background: linear-gradient(120deg, #1d4fd8, #2563eb 55%, #4f46e5);
  color: #fff;
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 52px 20px;
  flex-wrap: wrap;
}
.cta-text h2 { font-size: 26px; font-weight: 800; margin-bottom: 8px; }
.cta-text p { color: #dbe6fd; font-size: 15px; max-width: 620px; }

/* ---------- 页面头（内页） ---------- */
.page-hero {
  background: linear-gradient(180deg, #fbfcff, var(--bg));
  border-bottom: 1px solid var(--border);
  padding: 44px 0 40px;
}
.page-hero h1 { font-size: 34px; font-weight: 800; letter-spacing: -.4px; line-height: 1.3; }
.page-hero h1 .hl { color: var(--primary); }
.page-hero .lead { margin-top: 14px; font-size: 16px; color: var(--muted); max-width: 760px; }
.page-hero .hero-actions { margin-top: 24px; }
.page-hero .hero-trust { margin-top: 20px; }

/* ---------- 面包屑 ---------- */
.breadcrumb { padding: 16px 0 0; font-size: 13px; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.breadcrumb li { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); }
.breadcrumb li + li::before { content: "/"; color: #b7c2d6; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .ic { color: #9aa8c0; }
.breadcrumb li[aria-current="page"] { color: var(--text); font-weight: 600; }

/* ---------- 功能列表 ---------- */
.func-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.func-card {
  display: flex;
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: box-shadow .2s ease, border-color .2s ease;
}
.func-card:hover { box-shadow: var(--shadow-md); border-color: #c9d8f5; }
.func-card .ic-box {
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 11px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  background: var(--primary-soft);
}
.func-card .ic-box svg { width: 23px; height: 23px; }
.func-card h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 6px; }
.func-card p { font-size: 14px; color: var(--muted); }

/* ---------- 对比表格 ---------- */
.compare-wrap { overflow-x: auto; }
.compare {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  font-size: 14.5px;
  min-width: 640px;
}
.compare th, .compare td { padding: 14px 18px; border-bottom: 1px solid var(--border); text-align: left; }
.compare thead th { background: var(--primary-soft); color: var(--primary-dark); font-weight: 700; }
.compare tbody tr:last-child td { border-bottom: none; }
.compare .yes { color: var(--green); font-weight: 700; }
.compare .no { color: #9aa8c0; }
.compare .mid { color: var(--orange); font-weight: 600; }

/* ---------- 资讯 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.news-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform .2s ease, box-shadow .2s ease;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.news-card .n-meta { display: flex; gap: 12px; font-size: 12.5px; color: var(--muted); align-items: center; }
.news-card .n-cat {
  color: var(--primary-dark);
  background: var(--primary-soft);
  border-radius: 6px;
  padding: 2px 8px;
  font-weight: 700;
}
.news-card h2 { font-size: 19px; font-weight: 700; line-height: 1.45; }
.news-card h2 a { color: var(--text); }
.news-card h2 a:hover { color: var(--primary); }
.news-card p { font-size: 14px; color: var(--muted); flex: 1; }
.news-card .n-link { font-weight: 600; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.news-card .n-link .ic { transition: transform .18s ease; }
.news-card:hover .n-link .ic { transform: translateX(3px); }

/* ---------- 文章页 ---------- */
.article-wrap { max-width: 820px; margin: 0 auto; }
.article-head { padding: 36px 0 8px; }
.article-head .n-meta { display: flex; gap: 12px; font-size: 13px; color: var(--muted); margin-top: 14px; }
.article-head h1 { font-size: 30px; font-weight: 800; line-height: 1.35; letter-spacing: -.3px; }
.article-body {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 44px;
  margin-top: 22px;
  font-size: 15.5px;
  line-height: 1.95;
  color: #2a3446;
}
.article-body h2 { font-size: 21px; font-weight: 800; margin: 34px 0 14px; padding-left: 12px; border-left: 4px solid var(--primary); }
.article-body h3 { font-size: 17px; font-weight: 700; margin: 26px 0 10px; }
.article-body p { margin-bottom: 14px; }
.article-body ul { margin: 0 0 16px; }
.article-body ul li { position: relative; padding-left: 22px; margin-bottom: 8px; }
.article-body ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
}
.article-body ol { list-style: decimal; margin: 0 0 16px 22px; }
.article-body ol li { margin-bottom: 8px; }
.article-body strong { color: var(--text); }
.article-body .tips {
  background: var(--primary-soft);
  border: 1px solid #d4e2fb;
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 14px;
  color: var(--primary-dark);
  margin: 18px 0;
}
.article-cta {
  margin-top: 34px;
  background: linear-gradient(120deg, #eef4ff, #f8faff);
  border: 1px solid #d4e2fb;
  border-radius: var(--radius-lg);
  padding: 26px 28px;
  text-align: center;
}
.article-cta h3 { font-size: 18px; font-weight: 800; margin-bottom: 6px; }
.article-cta p { font-size: 14px; color: var(--muted); margin-bottom: 16px; }
.related {
  margin-top: 26px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
}
.related h3 { font-size: 16px; font-weight: 700; margin-bottom: 12px; }
.related ul li { padding: 6px 0; border-bottom: 1px dashed var(--border); font-size: 14.5px; }
.related ul li:last-child { border-bottom: none; }
.related a { display: inline-flex; align-items: center; gap: 6px; }
.related .ic { color: var(--primary); }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 34px;
  text-align: center;
}
.contact-card .ic-box {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  border-radius: 16px;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-card .ic-box svg { width: 30px; height: 30px; }
.contact-card h2 { font-size: 20px; font-weight: 800; margin-bottom: 8px; }
.contact-card p { font-size: 14.5px; color: var(--muted); margin-bottom: 18px; }
.contact-tips {
  margin-top: 26px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 30px;
}
.contact-tips h2 { font-size: 19px; font-weight: 800; margin-bottom: 12px; }
.contact-tips li { display: flex; gap: 10px; align-items: flex-start; padding: 7px 0; font-size: 14.5px; color: var(--muted); }
.contact-tips .ic { color: var(--green); flex-shrink: 0; margin-top: 4px; }

/* ---------- 页脚 ---------- */
.site-footer { background: #10182b; color: #aeb8cc; margin-top: 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 36px;
  padding: 54px 0 40px;
}
.footer-col h3 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col ul li { padding: 6px 0; font-size: 14px; }
.footer-col a { color: #aeb8cc; }
.footer-col a:hover { color: #fff; }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-logo .logo-text { color: #fff; }
.logo-mark-sm svg { width: 22px; height: 22px; }
.footer-about p { font-size: 13.5px; line-height: 1.85; margin-bottom: 18px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 20px 0 26px;
  text-align: center;
  font-size: 13px;
}
.footer-note { margin-top: 6px; color: #7d8aa3; font-size: 12.5px; }

/* ---------- 动效 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; gap: 36px; padding: 48px 0 56px; }
  .hero h1 { font-size: 34px; }
  .feature-grid, .product-grid, .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .dl-wrap { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .func-grid, .news-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .window-float { right: 6px; }
}
@media (max-width: 600px) {
  .section { padding: 52px 0; }
  .hero h1 { font-size: 27px; }
  .hero-sub { font-size: 15.5px; }
  .sec-head h2 { font-size: 24px; }
  .feature-grid, .product-grid, .scene-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .sys-grid { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 26px; }
  .article-body { padding: 26px 22px; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .cta-inner { justify-content: center; text-align: center; }
  .btn-lg { width: 100%; }
}