/* ============================================================
   无锡数智政务 · 官网公共样式 v2（宽屏 + 玻璃拟态 + 响应式）
   Design tokens: 主色科技蓝 × 青蓝点缀 × 玻璃层板 × 光斑粒子
   ============================================================ */

:root {
  /* 色系 */
  --brand-primary: #1e5dff;
  --brand-primary-dark: #1240c9;
  --brand-accent: #00d4ff;
  --brand-purple: #8b5cf6;
  --brand-pink: #ec4899;
  --brand-gradient: linear-gradient(135deg, #1e5dff 0%, #00d4ff 100%);
  --brand-gradient-2: linear-gradient(135deg, #6366f1 0%, #1e5dff 45%, #00d4ff 100%);
  --brand-gradient-hot: linear-gradient(135deg, #ec4899 0%, #8b5cf6 45%, #1e5dff 100%);
  --brand-gradient-soft: linear-gradient(135deg, rgba(30,93,255,0.12) 0%, rgba(0,212,255,0.10) 100%);
  --text-1: #0f172a;
  --text-2: #334155;
  --text-3: #64748b;
  --text-4: #94a3b8;
  --bg-1: #ffffff;
  --bg-2: #f7faff;
  --bg-3: #eef3ff;
  --bg-dark: #0a0f2e;
  --border: #e4ecff;
  --border-strong: #c9d8ff;
  --glass: rgba(255,255,255,0.72);
  --glass-strong: rgba(255,255,255,0.9);
  --glass-dark: rgba(10,15,46,0.55);

  /* 阴影（三层体系） */
  --shadow-xs: 0 2px 8px rgba(30,93,255,0.06);
  --shadow-sm: 0 6px 18px rgba(30,93,255,0.10);
  --shadow-md: 0 14px 42px rgba(30,93,255,0.14);
  --shadow-lg: 0 30px 80px rgba(30,93,255,0.22);
  --shadow-glow: 0 0 0 3px rgba(30,93,255,0.12);

  /* 圆角 */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 999px;

  /* 宽屏容器 */
  --container: min(1480px, 94vw);
  --container-narrow: min(1200px, 94vw);
  --header-h: 80px;
  --header-h-scrolled: 66px;
}

/* ============ reset ============ */
*, *::before, *::after { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text-1);
  background: var(--bg-1);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
html { scroll-behavior: smooth; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--brand-primary); }
img { max-width: 100%; display: block; }
ul, li { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; }

/* 全局网格背景纹理（只作用于顶部与 section 交替层） */
body::before {
  content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    radial-gradient(circle at 12% 8%, rgba(30,93,255,0.08), transparent 36%),
    radial-gradient(circle at 88% 18%, rgba(0,212,255,0.08), transparent 36%),
    radial-gradient(circle at 50% 90%, rgba(139,92,246,0.06), transparent 44%);
}

/* ============ 宽屏容器 ============ */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container.narrow { max-width: var(--container-narrow); }

/* ============ 顶部导航（玻璃态 + 滚动收缩） ============ */
.site-header {
  position: sticky; top: 0; z-index: 120;
  background: var(--glass);
  backdrop-filter: saturate(200%) blur(18px);
  -webkit-backdrop-filter: saturate(200%) blur(18px);
  border-bottom: 1px solid transparent;
  transition: height .3s ease, background .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.site-header.scrolled {
  border-bottom-color: rgba(228,236,255,0.8);
  background: var(--glass-strong);
  box-shadow: 0 8px 24px rgba(30,93,255,0.08);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-h);
  transition: height .3s ease;
}
.site-header.scrolled .nav { height: var(--header-h-scrolled); }

/* Brand */
.brand {
  display: flex; align-items: center; gap: 12px;
  font-weight: 800; font-size: 20px; letter-spacing: 0.5px;
}
.brand .logo {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: var(--brand-gradient-2);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 900;
  box-shadow: 0 8px 20px rgba(30,93,255,0.4);
  position: relative;
  transition: transform .3s;
}
.brand .logo::after {
  content: ''; position: absolute; inset: 0; border-radius: inherit;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.55), transparent 45%);
}
.brand:hover .logo { transform: rotate(-6deg) scale(1.05); }
.brand .name {
  background: var(--brand-gradient-2);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 19px;
}
.brand .en { color: var(--text-4); font-size: 11px; margin-left: 6px; font-weight: 600; letter-spacing: 1.2px; }

/* Menu */
.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-menu li a {
  display: inline-flex; align-items: center;
  padding: 10px 18px;
  font-size: 15px; color: var(--text-2); font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all .2s ease;
  position: relative;
}
.nav-menu li a:hover { color: var(--brand-primary); background: rgba(30,93,255,0.07); }
.nav-menu li a.active {
  color: var(--brand-primary);
  background: var(--brand-gradient-soft);
  font-weight: 600;
}
.nav-menu li a.cta {
  margin-left: 12px;
  background: var(--brand-gradient-2);
  color: #fff;
  padding: 11px 22px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 24px rgba(30,93,255,0.32);
  transition: all .25s ease;
}
.nav-menu li a.cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(30,93,255,0.42);
  color: #fff;
}
.nav-menu li a.nav-login {
  margin-left: 12px;
  border: 1px solid rgba(30,93,255,.35);
  color: var(--brand-primary);
  background: rgba(30,93,255,0.06);
  font-weight: 600;
}
.nav-menu li a.nav-login:hover {
  background: var(--brand-gradient-2);
  border-color: transparent;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(30,93,255,0.28);
}
.menu-toggle {
  display: none;
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--brand-gradient-soft);
  color: var(--brand-primary);
  border: 1px solid rgba(30,93,255,.2);
  font-size: 22px; cursor: pointer;
}

/* ============ Hero：双栏大屏 + 光斑粒子 ============ */
.page-hero {
  padding: 72px 0 88px;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg, var(--bg-2), #fff 80%);
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(600px 420px at 10% 15%, rgba(0,212,255,0.22), transparent 65%),
    radial-gradient(600px 420px at 95% 10%, rgba(30,93,255,0.22), transparent 65%),
    radial-gradient(500px 360px at 55% 95%, rgba(139,92,246,0.16), transparent 65%);
  pointer-events: none;
}
.page-hero::after {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(30,93,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,93,255,0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 45%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 45%, #000 30%, transparent 78%);
  opacity: .55;
  pointer-events: none;
}
.hero-inner {
  position: relative; z-index: 2;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
/* Hero 粒子装饰：2 orb */
.hero-orb {
  position: absolute; border-radius: 50%; filter: blur(50px); opacity: .6; z-index: 1; pointer-events: none;
}
.hero-orb.o-1 { width: 320px; height: 320px; top: -60px; left: -60px; background: #00d4ff; animation: floatOrb 14s ease-in-out infinite; }
.hero-orb.o-2 { width: 360px; height: 360px; top: -80px; right: -80px; background: #8b5cf6; animation: floatOrb 16s ease-in-out infinite reverse; }
.hero-orb.o-3 { width: 260px; height: 260px; bottom: -120px; left: 45%; background: var(--brand-primary); opacity: .35; animation: floatOrb 18s ease-in-out infinite; }
@keyframes floatOrb {
  0%,100% { transform: translate3d(0,0,0) scale(1); }
  50% { transform: translate3d(20px,-24px,0) scale(1.06); }
}

.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px;
  background: var(--glass);
  color: var(--brand-primary);
  border-radius: var(--radius-pill);
  font-size: 13px; font-weight: 600;
  border: 1px solid rgba(30,93,255,0.22);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-xs);
}
.hero-tag::before { content: '◆'; color: var(--brand-accent); }

.page-hero h1 {
  margin: 22px 0 20px;
  font-size: clamp(34px, 5.2vw, 62px);
  line-height: 1.15; font-weight: 900; letter-spacing: -0.5px;
  background: linear-gradient(135deg, #0f172a 0%, #1e5dff 55%, #00d4ff 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page-hero h1 .hl {
  background: var(--brand-gradient-hot);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page-hero p.lead {
  font-size: 17px; color: var(--text-2); max-width: 760px; line-height: 1.9; margin: 0 0 18px;
}
.hero-buttons {
  display: flex; gap: 14px; flex-wrap: wrap; margin-top: 32px;
}

/* ============ 通用按钮 ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 15px; font-weight: 700;
  transition: all .25s ease;
  cursor: pointer; border: none;
  position: relative; overflow: hidden;
  white-space: nowrap;
}
.btn-primary {
  background: var(--brand-gradient-2); color: #fff;
  box-shadow: 0 12px 28px rgba(30,93,255,0.3);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(30,93,255,0.42);
}
.btn-primary::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.45) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform .8s ease;
}
.btn-primary:hover::after { transform: translateX(120%); }
.btn-ghost {
  background: var(--glass); color: var(--brand-primary);
  border: 1.5px solid rgba(30,93,255,.3);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-xs);
}
.btn-ghost:hover {
  background: var(--brand-primary); color: #fff; border-color: var(--brand-primary);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent; color: var(--text-2);
  border: 1.5px solid var(--border-strong);
}
.btn-outline:hover {
  border-color: var(--brand-primary); color: var(--brand-primary);
  background: var(--brand-gradient-soft);
}

/* ============ Section ============ */
.section { padding: 96px 0; position: relative; }
.section.alt { background: var(--bg-2); }
.section.alt::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(30,93,255,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,93,255,0.045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, transparent, #000 15%, #000 85%, transparent);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 15%, #000 85%, transparent);
  pointer-events: none;
  opacity: .7;
}
.section > .container { position: relative; z-index: 1; }

.section-head { text-align: center; margin: 0 auto 56px; max-width: 820px; }
.section-head .label {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 700; letter-spacing: 2.2px;
  color: var(--brand-primary);
  padding: 6px 16px; border-radius: var(--radius-pill);
  background: var(--glass);
  border: 1px solid rgba(30,93,255,0.22);
  text-transform: uppercase;
  box-shadow: var(--shadow-xs);
}
.section-head h2 {
  font-size: clamp(26px, 3.2vw, 42px);
  font-weight: 900; line-height: 1.25;
  margin: 16px 0 14px;
  color: var(--text-1);
  letter-spacing: -0.2px;
}
.section-head h2 .hl {
  background: var(--brand-gradient-2);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.section-head p { font-size: 16.5px; color: var(--text-3); margin: 0 auto; }

/* ============ 卡片网格 ============ */
.card-grid {
  display: grid; gap: 24px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.card {
  padding: 32px 28px;
  background: var(--glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all .35s cubic-bezier(0.2,0.8,0.2,1);
  position: relative;
  overflow: hidden;
  z-index: 1;
}
.card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--brand-gradient-2);
  transform: scaleX(0); transform-origin: left;
  transition: transform .45s cubic-bezier(.2,.8,.2,1);
}
.card::after {
  content: ''; position: absolute; right: -40px; bottom: -40px;
  width: 220px; height: 220px; border-radius: 50%;
  background: var(--brand-gradient-soft);
  opacity: 0; transition: opacity .45s ease, transform .45s ease;
  transform: scale(.5);
  z-index: -1;
}
.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: rgba(30,93,255,0.3);
  background: #fff;
}
.card:hover::before { transform: scaleX(1); }
.card:hover::after { opacity: 1; transform: scale(1); }
.card .icon {
  width: 58px; height: 58px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  background: var(--brand-gradient-soft);
  font-size: 28px;
  margin-bottom: 20px;
  transition: transform .4s ease, box-shadow .4s ease;
}
.card:hover .icon { transform: rotate(-6deg) scale(1.08); }
.card h3 {
  font-size: 20px; font-weight: 800; margin: 0 0 12px; color: var(--text-1);
  line-height: 1.4;
}
.card p { margin: 0 0 18px; color: var(--text-3); font-size: 14.5px; line-height: 1.8; }
.card .link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 700; color: var(--brand-primary);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: all .2s;
}
.card .link::after { content: '→'; transition: transform .25s; }
.card:hover .link::after { transform: translateX(5px); }
.card:hover .link { border-bottom-color: rgba(30,93,255,.4); }

/* 大号特色卡片（feature-grid）: 宽屏 4 列 → 窄屏 3→2→1 */
.feature-grid {
  display: grid; gap: 24px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.feature-grid .card { padding: 36px 28px; }
.feature-grid .card .icon {
  width: 70px; height: 70px; border-radius: 20px;
  font-size: 30px;
  background: var(--brand-gradient-2);
  color: #fff;
  box-shadow: 0 12px 28px rgba(30,93,255,0.3);
}

/* 产品卡片：左侧窄图标条（编号+小图标）+ 右侧内容，不再用巨大色块占版面 */
.product-list > li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 32px;
  align-items: stretch;
  padding: 30px 34px;
  margin-bottom: 24px;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  transition: all .35s ease;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}
.product-list > li::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 0% 0%, rgba(30,93,255,0.08), transparent 50%);
  opacity: 0; transition: opacity .4s;
}
.product-list > li:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-6px);
  border-color: rgba(30,93,255,0.25);
  background: #fff;
}
.product-list > li:hover::before { opacity: 1; }
.product-list > li:nth-child(even) {
  grid-template-columns: 110px 1fr;
}

.product-visual {
  min-height: 100px;
  max-height: 120px;
  align-self: start;
  border-radius: var(--radius-lg);
  background: var(--brand-gradient-2);
  display: flex; align-items: center; justify-content: center;
  flex-direction: column;
  gap: 4px;
  font-size: 44px;
  color: #fff;
  box-shadow: 0 14px 30px rgba(30,93,255,0.24);
  position: relative;
  overflow: hidden;
  padding: 14px 8px;
}
.product-visual::after {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 30% 20%, rgba(255,255,255,0.36), transparent 42%),
    radial-gradient(circle at 70% 80%, rgba(255,255,255,0.18), transparent 45%);
}
.product-visual::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size: 18px 18px;
  opacity: .45;
}
.product-visual .v-num {
  position: static;
  z-index: 2;
  font-size: 22px; font-weight: 900;
  opacity: .95; letter-spacing: -0.5px; color: #fff;
  line-height: 1;
  padding: 3px 10px;
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(4px);
}
.product-visual .v-emoji {
  position: relative; z-index: 2;
  filter: drop-shadow(0 6px 12px rgba(0,0,0,0.2));
}

.product-info .tag {
  display: inline-block;
  font-size: 12px; font-weight: 800; letter-spacing: 2px;
  color: #fff;
  padding: 6px 14px; border-radius: var(--radius-pill);
  background: var(--brand-gradient-2);
  margin-bottom: 16px;
  box-shadow: 0 6px 16px rgba(30,93,255,0.25);
}
.product-info h3 {
  font-size: 30px; font-weight: 900; margin: 0 0 16px; color: var(--text-1); letter-spacing: -0.3px;
}
.product-info p { margin: 0 0 18px; color: var(--text-2); font-size: 15.5px; line-height: 1.9; }
.product-info strong { color: var(--text-1); }
.feature-chips {
  display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0 24px;
}
.feature-chips span {
  padding: 7px 14px;
  background: var(--bg-3);
  color: var(--text-2);
  border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 600;
  border: 1px solid var(--border);
  transition: all .2s;
}
.feature-chips span:hover {
  background: var(--brand-gradient-soft);
  border-color: rgba(30,93,255,.3);
  color: var(--brand-primary);
  transform: translateY(-1px);
}

/* ============ 知识库：sticky 左玻璃态目录 + Featured 大图 + 3列文档卡 ============ */
.kb-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 40px;
  align-items: flex-start;
}
.kb-aside {
  position: sticky; top: 100px;
  background: var(--glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  box-shadow: var(--shadow-xs);
}
.kb-aside h4 {
  margin: 0 0 16px; padding: 0 10px;
  font-size: 12px; font-weight: 800; color: var(--text-4); letter-spacing: 2.5px;
  text-transform: uppercase;
  display: flex; align-items: center; gap: 8px;
}
.kb-aside h4::before {
  content: ''; width: 18px; height: 2px; background: var(--brand-gradient-2); border-radius: 2px;
}
.kb-aside ul li a {
  display: block;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  font-size: 14.5px; color: var(--text-2); font-weight: 500;
  transition: all .18s;
  border: 1px solid transparent;
  margin-bottom: 4px;
}
.kb-aside ul li a:hover {
  background: var(--bg-3);
  color: var(--brand-primary);
  border-color: rgba(30,93,255,0.12);
  padding-left: 18px;
}
.kb-aside ul li a.on {
  background: var(--brand-gradient-soft);
  color: var(--brand-primary);
  font-weight: 700;
  border-color: rgba(30,93,255,0.22);
  box-shadow: inset 0 0 0 1px rgba(30,93,255,0.18);
}
.kb-tagcloud {
  margin-top: 20px; padding: 16px 12px;
  border-top: 1px dashed var(--border);
}
.kb-tagcloud .tag {
  display: inline-block;
  padding: 5px 12px; margin: 3px;
  border-radius: var(--radius-pill);
  background: var(--bg-3);
  color: var(--text-3);
  font-size: 12.5px; font-weight: 500;
  transition: all .2s;
}
.kb-tagcloud .tag:hover {
  background: var(--brand-gradient-2); color: #fff; transform: translateY(-1px);
}

/* Featured 大图卡 */
.kb-featured {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 20px;
  margin-bottom: 36px;
}
.kb-featured .kf {
  min-height: 200px;
  padding: 26px 24px;
  background: linear-gradient(135deg, #fff, var(--bg-2));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  position: relative;
  overflow: hidden;
  transition: all .3s;
  display: flex; flex-direction: column; justify-content: space-between;
}
.kb-featured .kf.main {
  background:
    radial-gradient(400px 200px at 100% 0%, rgba(0,212,255,.25), transparent 60%),
    radial-gradient(400px 260px at 0% 100%, rgba(30,93,255,.2), transparent 60%),
    linear-gradient(135deg, #1e5dff, #6366f1);
  color: #fff;
  border: none;
  box-shadow: var(--shadow-md);
}
.kb-featured .kf.main h3,
.kb-featured .kf.main p { color: #fff; }
.kb-featured .kf.main .meta { color: rgba(255,255,255,.8); }
.kb-featured .kf:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.kb-featured .kf .badge {
  align-self: flex-start;
  font-size: 12px; font-weight: 800;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: var(--brand-gradient-soft);
  color: var(--brand-primary);
  letter-spacing: 1px;
}
.kb-featured .kf.main .badge {
  background: rgba(255,255,255,.22);
  color: #fff;
}
.kb-featured .kf h3 {
  font-size: 21px; font-weight: 800; margin: 14px 0 8px;
  color: var(--text-1); line-height: 1.4;
}
.kb-featured .kf p { color: var(--text-3); font-size: 14px; line-height: 1.8; margin: 0; }
.kb-featured .kf .meta {
  display: flex; gap: 14px; font-size: 12.5px; color: var(--text-4);
  margin-top: 16px;
}

/* 分类 + 文档 3 列 */
.kb-category { margin-bottom: 56px; scroll-margin-top: 90px; }
.kb-category > h3 {
  display: flex; align-items: center; gap: 12px;
  font-size: 24px; font-weight: 900; margin: 0 0 24px; padding: 0 0 16px;
  border-bottom: 2px solid var(--border);
}
.kb-category > h3::before {
  content: ''; width: 6px; height: 26px;
  background: var(--brand-gradient-2);
  border-radius: 4px;
}
.kb-docs {
  display: grid; gap: 20px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.kb-doc {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  transition: all .3s;
  backdrop-filter: blur(8px);
  min-height: 160px;
  display: flex; flex-direction: column;
}
.kb-doc:hover {
  border-color: rgba(30,93,255,0.3);
  box-shadow: var(--shadow-sm);
  transform: translateY(-5px);
  background: #fff;
}
.kb-doc h4 {
  font-size: 17px; font-weight: 800; margin: 0 0 10px; color: var(--text-1);
  line-height: 1.45;
}
.kb-doc h4 .new-tag,
.kb-doc h4 .hot-tag {
  display: inline-block;
  margin-left: 8px;
  font-size: 11px; font-weight: 800;
  padding: 2px 8px; border-radius: 6px;
  vertical-align: middle;
  letter-spacing: 0.5px;
}
.kb-doc h4 .new-tag { background: #ef4444; color: #fff; }
.kb-doc h4 .hot-tag {
  background: linear-gradient(135deg,#f59e0b,#ef4444); color: #fff;
  box-shadow: 0 4px 12px rgba(239,68,68,.3);
}
.kb-doc p { margin: 0 0 auto; color: var(--text-3); font-size: 14px; line-height: 1.8; }
.kb-doc .meta {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
  font-size: 12.5px; color: var(--text-4);
}
.kb-doc .meta .chips { display: flex; gap: 6px; }
.kb-doc .meta .chips span {
  padding: 3px 8px;
  background: var(--bg-3);
  border-radius: 6px;
  font-size: 11.5px;
  color: var(--text-3);
}

/* ============ 关于公司：双栏 + 统计条 + 徽章墙 ============ */
.about-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 40px;
  align-items: stretch;
}
.about-text h2 {
  font-size: clamp(26px, 2.4vw, 34px);
  font-weight: 900; margin: 0 0 18px;
  letter-spacing: -0.3px;
}
.about-text p { color: var(--text-2); font-size: 16px; line-height: 1.9; margin: 0 0 18px; }
.about-text .mission {
  padding: 24px 28px;
  background: var(--glass);
  border-left: 4px solid var(--brand-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 26px 0 10px;
  font-size: 15.5px; color: var(--text-1); font-weight: 500;
  line-height: 2;
  box-shadow: var(--shadow-xs);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--border);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
}
.about-text .mission b { color: var(--brand-primary); }

.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin: 34px 0 10px;
}
.stat-box {
  text-align: center;
  padding: 28px 12px;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all .3s;
  position: relative; overflow: hidden;
  backdrop-filter: blur(8px);
}
.stat-box::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--brand-gradient-2); transform: scaleX(0); transform-origin: left;
  transition: transform .35s;
}
.stat-box:hover {
  border-color: rgba(30,93,255,0.3);
  transform: translateY(-5px);
  box-shadow: var(--shadow-sm);
  background: #fff;
}
.stat-box:hover::before { transform: scaleX(1); }
.stat-box .num {
  font-size: clamp(28px, 3vw, 42px);
  font-weight: 900;
  background: var(--brand-gradient-2);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.05;
  letter-spacing: -1px;
}
.stat-box .lbl { font-size: 13.5px; color: var(--text-3); margin-top: 6px; font-weight: 600; }

/* 资质徽章墙 */
.logo-wall {
  margin-top: 36px;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--glass);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-xs);
}
.logo-wall h4 {
  margin: 0 0 18px;
  font-size: 14px; font-weight: 800;
  color: var(--text-3); letter-spacing: 2px; text-transform: uppercase;
  display: flex; align-items: center; gap: 8px;
}
.logo-wall h4::before { content: '🏆'; }
.logo-wall .badges {
  display: flex; flex-wrap: wrap; gap: 10px;
}
.logo-wall .badge {
  padding: 8px 16px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: 13.5px; font-weight: 600;
  color: var(--text-2);
  box-shadow: var(--shadow-xs);
  transition: all .25s;
}
.logo-wall .badge:hover {
  transform: translateY(-2px);
  background: var(--brand-gradient-2);
  color: #fff; border-color: transparent;
  box-shadow: 0 8px 20px rgba(30,93,255,.28);
}

/* 联系卡（玻璃拟态 + 大角标） */
.contact-card {
  background:
    radial-gradient(500px 400px at 100% -20%, rgba(0,212,255,0.25), transparent 60%),
    radial-gradient(500px 400px at 0% 100%, rgba(30,93,255,0.2), transparent 60%),
    rgba(255,255,255,0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}
.contact-card::before {
  content: ''; position: absolute; top: -60px; right: -60px;
  width: 260px; height: 260px;
  background: var(--brand-gradient-2);
  opacity: .14;
  border-radius: 50%;
}
.contact-card h3 {
  font-size: 26px; font-weight: 900; margin: 0 0 28px;
  position: relative; z-index: 1;
  letter-spacing: -0.3px;
  display: flex; align-items: center; gap: 12px;
}
.contact-card h3::before {
  content: ''; width: 8px; height: 30px; border-radius: 4px; background: var(--brand-gradient-2);
}
.contact-list li {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 18px 0;
  border-bottom: 1px dashed rgba(30,93,255,0.15);
  position: relative; z-index: 1;
  transition: all .25s;
  padding-left: 10px; border-radius: 10px;
}
.contact-list li:last-child { border-bottom: none; }
.contact-list li:hover {
  background: var(--brand-gradient-soft);
  padding-left: 18px;
}
.contact-list .ico {
  flex-shrink: 0;
  width: 46px; height: 46px; border-radius: var(--radius-md);
  background: var(--brand-gradient-2);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  box-shadow: 0 8px 18px rgba(30,93,255,0.3);
}
.contact-list .meta .k { font-size: 12px; color: var(--text-4); font-weight: 700; letter-spacing: 0.5px; }
.contact-list .meta .v { font-size: 16px; color: var(--text-1); font-weight: 700; margin-top: 3px; }

/* ============ 表单（玻璃深色） ============ */
.contact-form {
  margin-top: 48px;
  padding: 44px 44px 40px;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(800px 500px at -20% -10%, rgba(30,93,255,0.2), transparent 60%),
    radial-gradient(700px 500px at 120% 10%, rgba(0,212,255,0.2), transparent 60%),
    linear-gradient(135deg, #0a0f2e 0%, #0f172a 100%);
  color: #fff;
  box-shadow: var(--shadow-lg);
  position: relative; overflow: hidden;
  border: 1px solid rgba(255,255,255,0.06);
}
.contact-form::after {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 36px 36px;
  opacity: .7;
}
.contact-form h3 {
  font-size: 26px; font-weight: 900; margin: 0 0 6px;
  position: relative; z-index: 1; letter-spacing: -0.2px;
  background: var(--brand-gradient);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  width: fit-content;
}
.contact-form > p {
  position: relative; z-index: 1;
  color: rgba(226,232,240,0.78);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; position: relative; z-index: 1; }
.form-group label {
  display: block;
  font-size: 13px;
  color: rgba(226,232,240,0.85);
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: 0.3px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  font-size: 14.5px;
  color: #fff;
  background: rgba(255,255,255,0.04);
  transition: all .22s ease;
  font-family: inherit;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.03);
}
.form-group textarea { resize: vertical; min-height: 140px; }
.form-group select { color: #fff; }
.form-group select option { background: #0f172a; color: #fff; }
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(148,163,184,0.7); }
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--brand-accent);
  background: rgba(255,255,255,0.07);
  box-shadow:
    0 0 0 3px rgba(0,212,255,0.18),
    inset 0 1px 0 rgba(255,255,255,0.06);
}
.form-group { position: relative; z-index: 1; }

/* ============ 地图 ============ */
.map-box {
  margin-top: 36px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  height: 340px;
  background:
    radial-gradient(300px 240px at 20% 20%, rgba(30,93,255,.18), transparent 60%),
    radial-gradient(300px 240px at 80% 80%, rgba(0,212,255,.18), transparent 60%),
    linear-gradient(rgba(30,93,255,0.055) 1px, transparent 1px) 0 0/32px 32px,
    linear-gradient(90deg, rgba(30,93,255,0.055) 1px, transparent 1px) 0 0/32px 32px,
    #fafcff;
  position: relative;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.map-box::before {
  content: '📍';
  font-size: 52px;
  animation: pinBounce 2.2s ease-in-out infinite;
  filter: drop-shadow(0 8px 16px rgba(239,68,68,.28));
}
.map-box::after {
  content: '江苏省 · 无锡市 · 高新区（接入高德/百度地图即可定位真实坐标）';
  position: absolute; bottom: 18px;
  font-size: 14px; color: var(--text-3);
  background: var(--glass);
  backdrop-filter: blur(8px);
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
}
@keyframes pinBounce {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

/* ============ 数据研究院 banner（多层渐变 + 粒子纹） ============ */
.research-banner {
  margin: 0;
  padding: 60px 56px;
  background:
    radial-gradient(900px 420px at 100% -30%, rgba(0,212,255,.55), transparent 60%),
    radial-gradient(600px 420px at 0% 130%, rgba(30,93,255,.55), transparent 60%),
    radial-gradient(circle at 50% 50%, rgba(139,92,246,.28), transparent 65%),
    var(--brand-gradient-2);
  color: #fff;
  border-radius: 32px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(30,93,255,0.4);
  border: 1px solid rgba(255,255,255,.12);
}
.research-banner::after {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.09) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: .55;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 50%, #000 40%, transparent 82%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 50%, #000 40%, transparent 82%);
}
.research-banner::before {
  content: ''; position: absolute; width: 420px; height: 420px; border-radius: 50%;
  top: -140px; right: -80px;
  background: radial-gradient(circle, rgba(255,255,255,.35), transparent 60%);
  filter: blur(40px); opacity: .7;
  animation: floatOrb 14s ease-in-out infinite;
}
.research-banner .content {
  position: relative; z-index: 2;
  display: flex; justify-content: space-between; align-items: center; gap: 48px; flex-wrap: wrap;
}
.research-banner h3 {
  font-size: clamp(24px, 2.6vw, 34px); font-weight: 900; margin: 0 0 12px;
  letter-spacing: -0.3px;
}
.research-banner p {
  font-size: 16px; opacity: 0.94; margin: 0; max-width: 680px; line-height: 1.9;
}
.research-banner .go-btn {
  flex-shrink: 0;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 18px 36px;
  background: #fff;
  color: var(--brand-primary);
  font-size: 16px; font-weight: 900;
  border-radius: var(--radius-md);
  box-shadow: 0 16px 40px rgba(0,0,0,0.22);
  transition: all .28s ease;
  position: relative; overflow: hidden;
}
.research-banner .go-btn::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(30,93,255,.35) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform .8s;
}
.research-banner .go-btn:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 56px rgba(0,0,0,0.28);
}
.research-banner .go-btn:hover::after { transform: translateX(120%); }

/* ============ 页脚（深色 4 列 + 玻璃图标） ============ */
.site-footer {
  background:
    radial-gradient(900px 500px at 10% 0%, rgba(30,93,255,0.35), transparent 60%),
    radial-gradient(900px 500px at 100% 10%, rgba(0,212,255,0.25), transparent 60%),
    linear-gradient(180deg, #0a0f2e 0%, #070b1e 100%);
  color: #aab4d1;
  padding: 72px 0 0;
  margin-top: 48px;
  position: relative;
  overflow: hidden;
}
.site-footer::after {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, #000 30%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, #000 30%, transparent 100%);
  opacity: .5;
  pointer-events: none;
}
.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
  position: relative; z-index: 1;
}
.site-footer h5 {
  color: #fff; font-size: 16px; font-weight: 800; margin: 0 0 20px;
  position: relative;
  padding-left: 12px;
}
.site-footer h5::before {
  content: ''; position: absolute; left: 0; top: 8px;
  width: 4px; height: 16px; border-radius: 3px;
  background: var(--brand-gradient-2);
}
.site-footer a {
  display: block;
  font-size: 14.5px; color: #93a0c7;
  padding: 6px 0;
  transition: all .2s;
}
.site-footer a:hover {
  color: #fff;
  padding-left: 4px;
}
.site-footer .brand-desc {
  color: #8d98bf;
  font-size: 14.5px; line-height: 1.9;
  margin: 18px 0 24px;
  max-width: 360px;
}
.site-footer .social {
  display: flex; gap: 12px;
}
.site-footer .social a {
  width: 42px; height: 42px; border-radius: 14px;
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; padding: 0;
  transition: all .25s;
}
.site-footer .social a:hover {
  background: var(--brand-gradient-2);
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 12px 24px rgba(30,93,255,0.4);
  padding: 0;
}
.site-footer .footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 22px 0 28px;
  font-size: 13.5px; color: #7580a5;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
  position: relative; z-index: 1;
}

/* ============ 浮动 FAB（脉冲入口） ============ */
.fab-research {
  position: fixed; right: 26px; bottom: 30px; z-index: 90;
  display: flex; align-items: center; gap: 10px;
  padding: 15px 24px;
  background: var(--brand-gradient-2);
  color: #fff;
  border-radius: var(--radius-pill);
  font-weight: 800; font-size: 14.5px;
  box-shadow: 0 16px 36px rgba(30,93,255,0.5);
  transition: all .28s;
  cursor: pointer;
  border: 1px solid rgba(255,255,255,0.22);
  backdrop-filter: blur(10px);
}
.fab-research:hover { transform: translateY(-4px); box-shadow: 0 24px 52px rgba(30,93,255,.6); }
.fab-research .pulse {
  width: 9px; height: 9px; border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 0 0 rgba(255,255,255,0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(255,255,255,0.6); }
  70% { box-shadow: 0 0 0 16px rgba(255,255,255,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,255,255,0); }
}

/* ============ 产品页左 sticky 目录 ============ */
.products-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  align-items: flex-start;
}
.products-toc {
  position: sticky; top: 100px;
  background: var(--glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  box-shadow: var(--shadow-xs);
}
.products-toc h4 {
  margin: 0 0 16px;
  font-size: 12.5px; font-weight: 800; color: var(--text-4);
  letter-spacing: 2.5px; text-transform: uppercase;
  display: flex; align-items: center; gap: 8px;
  padding: 0 10px;
}
.products-toc h4::before {
  content: ''; width: 18px; height: 2px;
  background: var(--brand-gradient-2); border-radius: 2px;
}
.products-toc ol { padding: 0; margin: 0; counter-reset: toc; }
.products-toc ol li { counter-increment: toc; }
.products-toc ol li a {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px; color: var(--text-2); font-weight: 500;
  transition: all .2s;
  margin-bottom: 4px;
  border: 1px solid transparent;
}
.products-toc ol li a::before {
  content: counter(toc, decimal-leading-zero);
  font-size: 12px; font-weight: 900; color: var(--text-4);
  width: 22px;
}
.products-toc ol li a:hover {
  background: var(--bg-3); color: var(--brand-primary);
  border-color: rgba(30,93,255,0.1);
  padding-left: 18px;
}
.products-toc ol li a:hover::before { color: var(--brand-primary); }

/* 滚动出现动画 */
.reveal { opacity: 0; transform: translateY(32px); transition: opacity .8s ease, transform .8s cubic-bezier(.2,.8,.2,1); }
.reveal.on { opacity: 1; transform: translateY(0); }

/* ============ 响应式：分层断点 ============ */
/* 1) ≥1440 宽屏默认容器已用 min(1480px, 94vw)，无需调整 */
/* 2) 1024–1439：卡片网 4→3 列 / 产品卡改单大列 / 产品 2.2 压缩 */
@media (max-width: 1400px) {
  .card-grid, .feature-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .kb-docs { grid-template-columns: repeat(3, 1fr); }
  .kb-featured { grid-template-columns: 1.6fr 1fr 1fr; }
  .site-footer .footer-grid { grid-template-columns: 1.3fr 1fr 1fr 1.1fr; gap: 32px; }
}
@media (max-width: 1200px) {
  .product-list > li, .product-list > li:nth-child(even) {
    grid-template-columns: 96px 1fr;
    padding: 26px 28px;
    gap: 26px;
  }
  .product-info h3 { font-size: 24px; }
  .product-visual { font-size: 40px; padding: 12px 6px; min-height: 96px; }
  .product-visual .v-num { font-size: 20px; padding: 3px 9px; }
  .products-layout { grid-template-columns: 240px 1fr; }
  .kb-layout { grid-template-columns: 260px 1fr; }
}
@media (max-width: 1024px) {
  .card-grid, .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kb-docs { grid-template-columns: repeat(2, 1fr); }
  .kb-featured { grid-template-columns: 1fr 1fr; }
  .kb-featured .kf.main { grid-column: 1 / -1; min-height: 220px; }
  .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .about-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: repeat(4, 1fr); }
  .research-banner { padding: 44px 36px; }
}
@media (max-width: 900px) {
  /* 菜单折叠：汉堡按钮 */
  .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-menu {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: min(320px, 86vw);
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-left: 1px solid var(--border);
    box-shadow: -16px 0 48px rgba(30,93,255,0.16);
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 80px 24px 24px;
    transform: translateX(100%);
    transition: transform .35s cubic-bezier(.2,.8,.2,1);
    z-index: 140;
  }
  .nav-menu.open { transform: translateX(0); }
  .nav-menu li a {
    width: 100%;
    padding: 14px 18px;
    font-size: 16px;
    border-radius: var(--radius-md);
  }
  .nav-menu li a.cta {
    margin-left: 0;
    margin-top: 12px;
    justify-content: center;
    padding: 14px;
  }
  /* 遮罩 */
  body.nav-open::before {
    content: ''; position: fixed; inset: 0; background: rgba(10,15,46,0.5);
    z-index: 130;
    backdrop-filter: blur(3px);
  }
}
@media (max-width: 768px) {
  .section { padding: 68px 0; }
  .page-hero { padding: 52px 0 72px; }
  .page-hero h1 { font-size: clamp(30px, 8vw, 42px); }
  .page-hero p.lead { font-size: 16px; }
  .hero-buttons .btn { width: 100%; padding: 15px 20px; }
  .card-grid, .feature-grid { grid-template-columns: 1fr; }
  .kb-docs { grid-template-columns: 1fr; }
  .kb-featured { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; gap: 16px; }
  .products-layout { grid-template-columns: 1fr; }
  .products-toc { position: static; }
  .kb-layout { grid-template-columns: 1fr; }
  .kb-aside { position: static; }
  .product-list > li, .product-list > li:nth-child(even) {
    grid-template-columns: 1fr;
    padding: 24px;
    gap: 20px;
  }
  .product-visual {
    font-size: 34px;
    min-height: unset;
    max-height: unset;
    flex-direction: row;
    justify-content: flex-start;
    padding: 10px 14px;
    gap: 12px;
  }
  .product-visual .v-num { font-size: 18px; padding: 3px 10px; }
  .product-info h3 { font-size: 22px; }
  .site-footer .footer-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 32px; }
  .site-footer { padding-top: 52px; }
  .research-banner { padding: 36px 26px; border-radius: 24px; }
  .research-banner h3 { font-size: 22px; }
  .contact-form { padding: 30px 24px; }
  .contact-card { padding: 28px 22px; }
  .site-header.scrolled .nav, .nav { height: var(--header-h-scrolled); }
  .fab-research { padding: 12px 18px; font-size: 13.5px; right: 16px; bottom: 20px; }
  .about-text .mission { padding: 20px 22px; }
  .logo-wall { padding: 22px; }
}
@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .hero-inner { padding: 0 18px; }
  .brand .en { display: none; }
  .brand .name { font-size: 17px; }
  .brand .logo { width: 38px; height: 38px; font-size: 20px; border-radius: 10px; }
  .feature-grid .card .icon { width: 60px; height: 60px; font-size: 26px; }
  .product-list > li { margin-bottom: 20px; }
  .feature-chips span { font-size: 12.5px; }
  .section-head h2 { font-size: 26px; }
}