/* ==========================================================================
   蓝创软件 LANTRY — 官网改版样式表
   设计系统：深空蓝 + 信创青，浅色主题，B2B 教育信息化风格
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 品牌色 */
  --brand-950: #041B44;
  --brand-900: #062B66;
  --brand-800: #0A3B87;
  --brand-700: #0E4CA8;
  --brand-600: #1560C7;
  --brand-500: #2A79E4;
  --brand-400: #5B9BF0;
  --brand-100: #E3EEFC;
  --brand-050: #F1F6FE;

  --cyan-600: #0E9E9A;
  --cyan-500: #14B8B2;
  --cyan-400: #35D2C8;
  --cyan-100: #DDF7F5;

  --gold-500: #E8A33D;
  --gold-100: #FDF3E2;

  /* 中性 */
  --ink: #0B1729;
  --ink-2: #1E2B42;
  --text: #44536B;
  --text-soft: #6C7A93;
  --muted: #909CB1;
  --line: #E4EAF4;
  --line-soft: #EFF3FA;
  --surface: #F6F9FE;
  --surface-2: #EDF3FC;
  --white: #FFFFFF;

  --danger: #D64545;

  /* 排版 */
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Hiragino Sans GB",
    "Source Han Sans SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-num: "SF Pro Display", "DIN Alternate", "Helvetica Neue", Arial, sans-serif;

  /* 尺寸 */
  --container: 1200px;
  --container-narrow: 880px;
  --radius-xs: 8px;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  /* 阴影 */
  --shadow-xs: 0 1px 2px rgba(11, 23, 41, .05);
  --shadow-sm: 0 4px 14px rgba(11, 23, 41, .06);
  --shadow: 0 12px 32px rgba(11, 23, 41, .08);
  --shadow-lg: 0 24px 60px rgba(11, 23, 41, .12);
  --shadow-brand: 0 14px 34px rgba(21, 96, 199, .22);

  --header-h: 74px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 2. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.01em;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--brand-600); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--brand-500); }

img { max-width: 100%; display: block; }
ul, ol { margin: 0; padding: 0; list-style: none; }

svg { flex: none; }

::selection { background: var(--brand-100); color: var(--brand-800); }

/* 锚点滚动留出吸附头部的高度 */
[id] { scroll-margin-top: 112px; }

:focus-visible {
  outline: 2px solid var(--brand-500);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 3. 布局工具 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}
.container-narrow { max-width: var(--container-narrow); }

.section { padding: 92px 0; position: relative; }
.section-sm { padding: 60px 0; }
.section-surface { background: var(--surface); }
.section-soft { background: linear-gradient(180deg, var(--white) 0%, var(--brand-050) 100%); }
.section-tight-top { padding-top: 0; }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.text-center { text-align: center; }
.mx-auto { margin-inline: auto; }

/* ---------- 4. 区块标题 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--brand-600);
  background: var(--brand-050);
  border: 1px solid var(--brand-100);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan-500);
}

.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head.text-center { margin-inline: auto; }
.section-head h2 {
  font-size: clamp(26px, 3.4vw, 38px);
  margin-bottom: 16px;
}
.section-head p { font-size: 17px; color: var(--text-soft); margin: 0; }

.section-head-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 48px;
}
.section-head-row .section-head { margin-bottom: 0; }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .22s var(--ease), box-shadow .22s var(--ease),
    background-color .22s var(--ease), color .22s var(--ease), border-color .22s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: linear-gradient(135deg, var(--brand-600), var(--brand-500));
  color: #fff;
  box-shadow: var(--shadow-brand);
}
.btn-primary:hover { color: #fff; box-shadow: 0 18px 40px rgba(21, 96, 199, .3); }

.btn-accent {
  background: linear-gradient(135deg, var(--cyan-600), var(--cyan-400));
  color: #04332F;
  box-shadow: 0 14px 34px rgba(20, 184, 178, .26);
}
.btn-accent:hover { color: #04332F; }

.btn-ghost {
  background: var(--white);
  color: var(--brand-700);
  border-color: var(--line);
  box-shadow: var(--shadow-xs);
}
.btn-ghost:hover { border-color: var(--brand-400); color: var(--brand-600); }

.btn-outline-light {
  background: rgba(255, 255, 255, .08);
  color: #fff;
  border-color: rgba(255, 255, 255, .42);
}
.btn-outline-light:hover { background: rgba(255, 255, 255, .16); color: #fff; }

.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-block { width: 100%; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 15px;
}
.link-arrow svg { transition: transform .22s var(--ease); }
.link-arrow:hover svg { transform: translateX(4px); }

/* ---------- 6. 顶栏 + 导航 ---------- */
.site-header { position: sticky; top: 0; z-index: 90; }

.topbar {
  background: var(--brand-950);
  color: rgba(255, 255, 255, .78);
  font-size: 13px;
  height: 36px;
  display: flex;
  align-items: center;
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.topbar-item { display: inline-flex; align-items: center; gap: 7px; }
.topbar-item svg { opacity: .7; }
.topbar-right { display: flex; align-items: center; gap: 22px; }
.topbar a { color: rgba(255, 255, 255, .78); }
.topbar a:hover { color: #fff; }

.navbar {
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
  transition: box-shadow .25s var(--ease);
}
.site-header.is-stuck .navbar { box-shadow: 0 6px 24px rgba(11, 23, 41, .07); }

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  height: var(--header-h);
}

/* 品牌 */
.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.brand-mark {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: linear-gradient(140deg, var(--brand-700), var(--brand-500) 55%, var(--cyan-500));
  display: grid;
  place-items: center;
  box-shadow: 0 8px 20px rgba(21, 96, 199, .28);
}
.brand-mark svg { width: 24px; height: 24px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong {
  font-size: 19px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: .02em;
}
.brand-text small {
  font-size: 10px;
  letter-spacing: .18em;
  color: var(--muted);
  font-weight: 600;
  font-family: var(--font-num);
}

/* 主导航 */
.nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-2);
  transition: background-color .2s var(--ease), color .2s var(--ease);
}
.nav-link:hover { background: var(--brand-050); color: var(--brand-700); }
.nav-link.is-active { color: var(--brand-600); }
.nav-item { position: relative; }
.nav-link .caret { transition: transform .25s var(--ease); opacity: .55; }
.nav-item.has-dropdown:hover .caret { transform: rotate(180deg); }

.dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translate(-50%, 8px);
  width: 330px;
  padding: 10px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s;
}
.nav-item.has-dropdown:hover .dropdown,
.nav-item.has-dropdown:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}
.dropdown a {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 11px 12px;
  border-radius: var(--radius-sm);
  transition: background-color .18s var(--ease);
}
.dropdown a:hover { background: var(--brand-050); }
.dropdown .dd-ico {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: var(--brand-050);
  color: var(--brand-600);
  display: grid;
  place-items: center;
  flex: none;
}
.dropdown a:hover .dd-ico { background: var(--brand-600); color: #fff; }
.dropdown .dd-t { display: block; font-size: 14.5px; font-weight: 700; color: var(--ink); line-height: 1.5; }
.dropdown .dd-d { display: block; font-size: 12.5px; color: var(--muted); line-height: 1.5; font-weight: 400; }

.nav-cta { margin-left: 10px; }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 20px; height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .28s var(--ease), opacity .2s var(--ease);
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 7. Hero ---------- */
.hero {
  position: relative;
  background: radial-gradient(120% 130% at 82% 8%, #16509F 0%, #0A3B87 38%, #05224F 100%);
  color: #fff;
  overflow: hidden;
  padding: 96px 0 104px;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(90% 80% at 65% 20%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(90% 80% at 65% 20%, #000 20%, transparent 78%);
}
.hero::after {
  content: "";
  position: absolute;
  width: 620px; height: 620px;
  right: -160px; top: -220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(53, 210, 200, .34), transparent 66%);
  filter: blur(6px);
}
.hero .container { position: relative; z-index: 2; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.06fr .94fr;
  gap: 64px;
  align-items: center;
}
.hero h1 {
  color: #fff;
  font-size: clamp(30px, 4.2vw, 50px);
  line-height: 1.22;
  letter-spacing: -.02em;
  margin-bottom: 22px;
}
.hero h1 .hl {
  background: linear-gradient(100deg, var(--cyan-400), #8FE9E2);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead {
  font-size: 17.5px;
  line-height: 1.82;
  color: rgba(255, 255, 255, .8);
  max-width: 560px;
  margin-bottom: 34px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 42px; }

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, .14);
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, .74);
}
.hero-badge svg { color: var(--cyan-400); }

/* Hero 产品卡 */
.hero-panel {
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 30px 70px rgba(2, 15, 38, .42);
}
.hero-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.hero-panel-head span {
  font-size: 12.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .55);
  font-weight: 600;
}
.hero-panel-head .dot-row { display: flex; gap: 6px; }
.hero-panel-head .dot-row i { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,.22); }
.hero-panel-head .dot-row i:first-child { background: var(--cyan-400); }

.hero-products { display: grid; gap: 10px; }
.hero-product {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 15px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .1);
  color: #fff;
  transition: background-color .22s var(--ease), transform .22s var(--ease), border-color .22s var(--ease);
}
.hero-product:hover {
  background: rgba(255, 255, 255, .13);
  border-color: rgba(53, 210, 200, .5);
  color: #fff;
  transform: translateX(4px);
}
.hero-product .hp-ico {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: rgba(53, 210, 200, .18);
  color: var(--cyan-400);
  display: grid;
  place-items: center;
  flex: none;
}
.hero-product .hp-t { font-size: 14.5px; font-weight: 700; line-height: 1.4; }
.hero-product .hp-d { font-size: 12.5px; color: rgba(255, 255, 255, .55); line-height: 1.5; }

/* ---------- 8. 统计条 ---------- */
.stats-band {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  margin-top: -58px;
  position: relative;
  z-index: 5;
  padding: 34px 24px;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { text-align: center; padding: 6px 18px; border-right: 1px solid var(--line-soft); }
.stat:last-child { border-right: 0; }
.stat-value {
  font-family: var(--font-num);
  font-size: 40px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--brand-700);
  letter-spacing: -.02em;
}
.stat-value .unit { font-size: 19px; font-weight: 700; margin-left: 2px; color: var(--brand-500); }
.stat-label { font-size: 14px; color: var(--text-soft); margin-top: 6px; }

/* ---------- 9. 卡片 ---------- */
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  transition: transform .28s var(--ease), box-shadow .28s var(--ease), border-color .28s var(--ease);
}
.card-hover:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: var(--brand-100);
}
.card h3 { font-size: 18.5px; margin-bottom: 10px; }
.card p { font-size: 15px; color: var(--text-soft); }

.icon-tile {
  width: 50px; height: 50px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(140deg, var(--brand-050), var(--brand-100));
  color: var(--brand-600);
  margin-bottom: 20px;
}
.icon-tile.tile-cyan {
  background: linear-gradient(140deg, var(--cyan-100), #EAFCFA);
  color: var(--cyan-600);
}
.icon-tile.tile-gold {
  background: linear-gradient(140deg, var(--gold-100), #FBF0DC);
  color: #C4841F;
}

/* ---------- 10. 产品卡 ---------- */
.product-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 30px 28px;
  overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.product-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-600), var(--cyan-500));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .34s var(--ease);
}
.product-card:hover {
  transform: translateY(-7px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.product-card:hover::before { transform: scaleX(1); }
.product-card .pc-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--brand-600);
  background: var(--brand-050);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  margin-bottom: 18px;
  align-self: flex-start;
}
.product-card h3 { font-size: 20px; margin-bottom: 12px; }
.product-card .pc-desc {
  font-size: 14.5px;
  color: var(--text-soft);
  line-height: 1.8;
  margin-bottom: 20px;
  flex: 1;
}
.product-card .pc-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}
.product-card .pc-points span {
  font-size: 12.5px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xs);
  padding: 4px 10px;
}

/* ---------- 11. 功能列表（编号） ---------- */
.feature-list { display: grid; gap: 14px; }
.feature-item {
  display: flex;
  gap: 18px;
  padding: 20px 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color .22s var(--ease), box-shadow .22s var(--ease), transform .22s var(--ease);
}
.feature-item:hover {
  border-color: var(--brand-100);
  box-shadow: var(--shadow-sm);
  transform: translateX(3px);
}
.feature-num {
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 800;
  color: var(--brand-600);
  background: var(--brand-050);
  border-radius: 8px;
  width: 30px; height: 30px;
  display: grid;
  place-items: center;
  flex: none;
  margin-top: 2px;
}
.feature-item h4 { font-size: 16px; margin-bottom: 6px; color: var(--ink); }
.feature-item p { font-size: 14.5px; color: var(--text-soft); margin: 0; line-height: 1.78; }

/* ---------- 12. 类目 tabs ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}
.filter-btn {
  font-family: inherit;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 9px 20px;
  cursor: pointer;
  transition: all .22s var(--ease);
}
.filter-btn:hover { border-color: var(--brand-400); color: var(--brand-600); }
.filter-btn.is-active {
  background: var(--brand-600);
  border-color: var(--brand-600);
  color: #fff;
  box-shadow: var(--shadow-brand);
}

/* ---------- 13. 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.news-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .28s var(--ease), box-shadow .28s var(--ease), border-color .28s var(--ease);
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--brand-100); }
.news-thumb {
  height: 148px;
  background: linear-gradient(135deg, var(--brand-800), var(--brand-500) 60%, var(--cyan-500));
  position: relative;
  display: grid;
  place-items: center;
  color: rgba(255, 255, 255, .95);
}
.news-thumb::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.09) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: .55;
}
.news-thumb .nt-date {
  position: relative; z-index: 2;
  text-align: center;
  font-family: var(--font-num);
}
.news-thumb .nt-date b { display: block; font-size: 34px; font-weight: 800; line-height: 1; }
.news-thumb .nt-date small { font-size: 12px; letter-spacing: .16em; opacity: .82; }
.news-body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.news-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 12px;
}
.news-meta .nt-chip {
  color: var(--brand-600);
  background: var(--brand-050);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
  font-weight: 600;
}
.news-body h3 { font-size: 16.5px; line-height: 1.6; margin-bottom: 12px; }
.news-body h3 a { color: var(--ink); }
.news-body h3 a:hover { color: var(--brand-600); }
.news-body p { font-size: 14px; color: var(--text-soft); line-height: 1.75; flex: 1; }

/* 新闻列表（列表式） */
.news-list { display: grid; gap: 2px; }
.news-row {
  display: grid;
  grid-template-columns: 104px 1fr 30px;
  align-items: center;
  gap: 24px;
  padding: 22px 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  transition: border-color .22s var(--ease), box-shadow .22s var(--ease), transform .22s var(--ease);
}
.news-row:hover {
  border-color: var(--brand-100);
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}
.news-row .nr-date {
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  color: var(--brand-600);
  background: var(--brand-050);
  border-radius: var(--radius-xs);
  padding: 8px 0;
  text-align: center;
  line-height: 1.4;
}
.news-row .nr-date small { display: block; font-size: 11px; color: var(--text-soft); font-weight: 500; }
.news-row h3 { font-size: 16.5px; margin-bottom: 6px; }
.news-row h3 a { color: var(--ink); }
.news-row h3 a:hover { color: var(--brand-600); }
.news-row p {
  font-size: 14px;
  color: var(--text-soft);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-row .nr-go {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--surface);
  color: var(--muted);
  display: grid;
  place-items: center;
  transition: all .22s var(--ease);
}
.news-row:hover .nr-go { background: var(--brand-600); color: #fff; }
.news-row.is-hidden { display: none; }

/* ---------- 14. 客户 ---------- */
.client-block { margin-bottom: 40px; }
.client-block:last-child { margin-bottom: 0; }
.client-block-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.client-block-head h3 { font-size: 17px; }
.client-block-head .cb-count {
  font-family: var(--font-num);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--cyan-600);
  background: var(--cyan-100);
  border-radius: var(--radius-pill);
  padding: 3px 11px;
}
.chip-wall { display: flex; flex-wrap: wrap; gap: 9px; }
.chip {
  font-size: 13.5px;
  color: var(--text);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  padding: 8px 14px;
  transition: all .2s var(--ease);
}
.chip:hover {
  border-color: var(--brand-400);
  color: var(--brand-600);
  box-shadow: var(--shadow-xs);
  transform: translateY(-2px);
}

/* ---------- 15. 时间线 ---------- */
.timeline { position: relative; padding-left: 34px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 7px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--brand-500), var(--cyan-400), transparent);
}
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -34px; top: 7px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--white);
  border: 3px solid var(--brand-500);
  box-shadow: 0 0 0 4px rgba(42, 121, 228, .1);
}
.tl-item .tl-year {
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 800;
  color: var(--brand-600);
  letter-spacing: .04em;
  margin-bottom: 6px;
}
.tl-item h4 { font-size: 16.5px; margin-bottom: 6px; }
.tl-item p { font-size: 14.5px; color: var(--text-soft); margin: 0; }

/* ---------- 16. 富文本正文 ---------- */
.prose { font-size: 16px; line-height: 1.95; color: var(--text); }
.prose h2 { font-size: 24px; margin: 44px 0 18px; }
.prose h3 { font-size: 19px; margin: 34px 0 14px; }
.prose p { margin-bottom: 18px; }
.prose ul { margin: 0 0 18px; }
.prose li { position: relative; padding-left: 22px; margin-bottom: 9px; }
.prose li::before {
  content: "";
  position: absolute;
  left: 4px; top: 12px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan-500);
}
.prose strong { color: var(--ink-2); font-weight: 700; }

.lead-panel {
  background: linear-gradient(135deg, var(--brand-050), var(--white));
  border: 1px solid var(--brand-100);
  border-left: 4px solid var(--brand-500);
  border-radius: var(--radius);
  padding: 28px 30px;
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--ink-2);
  margin-bottom: 40px;
}
.lead-panel p:last-child { margin-bottom: 0; }

/* 两栏布局 */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.split-wide { grid-template-columns: 1.25fr .75fr; }

/* 侧边导航（产品页） */
.side-nav {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-xs);
}
.side-nav h4 {
  font-size: 13px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
  font-weight: 700;
}
.side-nav a {
  display: block;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink-2);
  transition: all .2s var(--ease);
}
.side-nav a:hover { background: var(--brand-050); color: var(--brand-600); }
.side-nav a.is-current {
  background: linear-gradient(135deg, var(--brand-600), var(--brand-500));
  color: #fff;
  box-shadow: var(--shadow-brand);
}
.side-nav .side-cta {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
}
.side-nav .side-cta p { font-size: 13px; color: var(--text-soft); margin-bottom: 12px; }

/* ---------- 17. 页头（内页） ---------- */
.page-hero {
  position: relative;
  background: radial-gradient(110% 140% at 78% 0%, #14539F 0%, #0A3B87 42%, #051F49 100%);
  color: #fff;
  padding: 60px 0 66px;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(80% 100% at 70% 10%, #000, transparent 76%);
  -webkit-mask-image: radial-gradient(80% 100% at 70% 10%, #000, transparent 76%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { color: #fff; font-size: clamp(25px, 3.4vw, 38px); margin-bottom: 14px; }
.page-hero p {
  color: rgba(255, 255, 255, .76);
  font-size: 16.5px;
  max-width: 660px;
  margin: 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, .6);
  margin-bottom: 20px;
}
.breadcrumb a { color: rgba(255, 255, 255, .6); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { opacity: .45; }
.breadcrumb .cur { color: rgba(255, 255, 255, .95); font-weight: 600; }

/* ---------- 18. CTA 区块 ---------- */
.cta-band {
  position: relative;
  background: radial-gradient(110% 160% at 12% 10%, #15528F 0%, #0A3B87 45%, #041B44 100%);
  border-radius: var(--radius-lg);
  padding: 60px 56px;
  color: #fff;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.3fr .7fr;
  gap: 44px;
  align-items: center;
}
.cta-band::after {
  content: "";
  position: absolute;
  right: -90px; bottom: -150px;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(53, 210, 200, .3), transparent 68%);
}
.cta-band > * { position: relative; z-index: 2; }
.cta-band h2 { color: #fff; font-size: clamp(24px, 3vw, 33px); margin-bottom: 14px; }
.cta-band p { color: rgba(255, 255, 255, .78); font-size: 16px; margin: 0; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: flex-end; }

/* ---------- 19. 表单 ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field-full { grid-column: 1 / -1; }
.field label { font-size: 14px; font-weight: 600; color: var(--ink-2); }
.field label .req { color: var(--danger); margin-left: 3px; }
.field input,
.field select,
.field textarea {
  font-family: inherit;
  font-size: 15px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px 15px;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
  width: 100%;
}
.field textarea { min-height: 128px; resize: vertical; line-height: 1.7; }
.field input::placeholder,
.field textarea::placeholder { color: var(--muted); }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--brand-500);
  box-shadow: 0 0 0 4px rgba(42, 121, 228, .12);
}

/* 联系信息卡 */
.contact-item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px dashed var(--line);
}
.contact-item:last-child { border-bottom: 0; }
.contact-item .ci-ico {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--brand-050);
  color: var(--brand-600);
  display: grid;
  place-items: center;
  flex: none;
}
.contact-item .ci-label { font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.contact-item .ci-value { font-size: 15.5px; color: var(--ink-2); font-weight: 600; line-height: 1.6; word-break: break-all; }
.contact-item .ci-value a { color: var(--ink-2); }
.contact-item .ci-value a:hover { color: var(--brand-600); }

/* ---------- 20. 页脚 ---------- */
.site-footer {
  background: var(--brand-950);
  color: rgba(255, 255, 255, .62);
  padding: 72px 0 0;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr .9fr .95fr .8fr 1.2fr;
  gap: 40px;
  padding-bottom: 52px;
}
.site-footer .brand-text strong { color: #fff; }
.site-footer .brand-text small { color: rgba(255, 255, 255, .42); }
.footer-desc {
  margin: 20px 0 22px;
  line-height: 1.85;
  font-size: 13.5px;
  color: rgba(255, 255, 255, .55);
}
.footer-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.footer-tags span {
  font-size: 12px;
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .1);
  color: rgba(255, 255, 255, .68);
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 20px;
  font-weight: 700;
}
.footer-col a {
  display: block;
  color: rgba(255, 255, 255, .62);
  padding: 7px 0;
  font-size: 14px;
  transition: color .2s var(--ease), transform .2s var(--ease);
}
.footer-col a:hover { color: #fff; transform: translateX(3px); }
.footer-contact li {
  display: flex;
  gap: 10px;
  margin-bottom: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .62);
}
.footer-contact li svg { margin-top: 5px; color: var(--cyan-400); }
.footer-contact a { color: rgba(255, 255, 255, .62); }
.footer-contact a:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 24px 0 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, .42);
}

/* ---------- 21. 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--white);
  color: var(--brand-600);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  display: grid;
  place-items: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .28s var(--ease);
  z-index: 80;
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--brand-600); color: #fff; border-color: var(--brand-600); }

/* ---------- 22. 滚动进场 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  .js .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 23. 响应式 ---------- */
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr; gap: 46px; }
  .hero-panel { max-width: 560px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .cta-band { grid-template-columns: 1fr; padding: 48px 40px; }
  .cta-actions { justify-content: flex-start; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .nav {
    position: fixed;
    inset: calc(36px + var(--header-h)) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
    padding: 16px 20px 24px;
    max-height: calc(100vh - 110px);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .24s var(--ease), transform .24s var(--ease), visibility .24s;
  }
  .nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav-link { padding: 13px 12px; font-size: 16px; justify-content: space-between; }
  .nav-item.has-dropdown .dropdown {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    width: auto;
    box-shadow: none;
    border: 0;
    border-left: 2px solid var(--brand-100);
    border-radius: 0;
    margin: 0 0 8px 12px;
    padding: 0 0 0 6px;
    display: none;
  }
  .nav-item.has-dropdown.is-expanded .dropdown { display: block; }
  .nav-cta { margin: 12px 0 0; }

  .split, .split-wide { grid-template-columns: 1fr; gap: 36px; }
  .side-nav { position: static; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 22px 0; }
  .stat:nth-child(2) { border-right: 0; }
  .section { padding: 66px 0; }
  .section-head-row { flex-direction: column; align-items: flex-start; gap: 20px; }
}

@media (max-width: 720px) {
  .container { padding-inline: 18px; }
  .topbar-right { display: none; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero { padding: 64px 0 78px; }
  .section { padding: 56px 0; }
  .stats-band { padding: 26px 16px; }
  .stat-value { font-size: 32px; }
  .cta-band { padding: 38px 26px; }
  .news-row { grid-template-columns: 1fr; gap: 12px; padding: 18px; }
  .news-row .nr-date { width: fit-content; padding: 6px 12px; text-align: left; }
  .news-row .nr-date small { display: inline; margin-left: 6px; }
  .news-row .nr-go { display: none; }
  .news-row p { -webkit-line-clamp: 2; }
  .to-top { right: 16px; bottom: 16px; }
}

/* ---------- 24. 打印 ---------- */
@media print {
  .site-header, .to-top, .cta-band, .site-footer { display: none; }
  body { font-size: 12pt; }
}

/* ---------- 26. 设备画廊（宣传册硬件矩阵） ---------- */
.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 18px;
}
.device-tile {
  margin: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.device-tile:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.device-tile .dt-img {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  padding: 12px;
}
.device-tile .dt-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.device-tile figcaption {
  padding: 11px 14px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  border-top: 1px solid var(--line-soft);
  text-align: center;
}
.matrix-chips { display: flex; flex-wrap: wrap; gap: 10px; }
.matrix-chips .chip { font-size: 14px; padding: 8px 16px; }
.matrix-note { margin-top: 14px; font-size: 14px; color: var(--text-soft); }

/* ---------- 27. 解决方案配图 / 资质墙 ---------- */
.shot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 18px;
}
.shot-grid figure {
  margin: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.shot-grid img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; display: block; }
.shot-grid figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-soft);
  border-top: 1px solid var(--line-soft);
  text-align: center;
}
.wide-shot {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
}
.wide-shot img { width: 100%; display: block; }
.wide-shot figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-soft);
  border-top: 1px solid var(--line-soft);
  text-align: center;
  margin: 0;
}
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 14px;
}
.cert-tile {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.cert-tile:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.cert-tile img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: contain;
  background: #fff;
  padding: 8px;
  display: block;
}

/* ---------- 28. 解决方案卡片 ---------- */
.solution-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.solution-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.solution-card .sc-img { aspect-ratio: 16 / 8; overflow: hidden; }
.solution-card .sc-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.solution-card .sc-body { padding: 22px 24px 24px; display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.solution-card h3 { font-size: 19px; margin: 0; color: var(--ink); }
.solution-card p { font-size: 14px; color: var(--text-soft); margin: 0; line-height: 1.7; }

/* ---------- 29. 方案定位引用面板 / 页脚声明 ---------- */
.quote-panel {
  margin-top: 22px;
  padding: 26px 28px;
  background: linear-gradient(135deg, rgba(21, 96, 199, .05), rgba(20, 184, 178, .06));
  border: 1px solid var(--line);
  border-left: 3px solid var(--brand-600);
  border-radius: var(--radius);
}
.quote-mark {
  display: block;
  font-size: 19px;
  font-weight: 700;
  color: var(--brand-600);
  letter-spacing: .04em;
}
.quote-panel .quote-body {
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-2, #445);
}
.footer-legal {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  color: var(--muted);
  line-height: 1.7;
}