/* =========================================================
   号介二科技 · 官网样式
   设计语言：科技蓝 / 深空底 / 玻璃质感 / 大面积留白
   兼容：PC 端 + H5 移动端（响应式）
   ========================================================= */

/* ---------- 1. 基础与变量 ---------- */
:root {
  --blue: #1153e6;
  --blue-dark: #0c3fb5;
  --blue-light: #3b82f6;
  --cyan: #22d3ee;
  --blue-50: #eef4ff;
  --blue-100: #dbe8ff;
  --ink: #0a1526;
  --ink-soft: #1e293b;
  --text: #3b4a60;
  --muted: #6b7a90;
  --line: #e3eaf4;
  --surface: #f5f8fd;
  --white: #ffffff;
  --radius: 20px;
  --radius-sm: 14px;
  --shadow: 0 24px 60px -34px rgba(16, 42, 80, .35);
  --shadow-hover: 0 30px 60px -28px rgba(16, 42, 80, .42);
  --header-h: 76px;
  --container: 1200px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  padding-top: var(--header-h);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
}

img { display: block; max-width: 100%; border: 0; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3, h4, p { margin: 0; }
::selection { background: rgba(17, 83, 230, .16); }

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

.icon {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
}

/* ---------- 2. 通用组件 ---------- */
.section { padding: 88px 0; position: relative; }
.section.soft { background: var(--surface); }
.section.dark {
  background: #060e1d;
  color: #a9bbd4;
  overflow: hidden;
}
.section.dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(800px 400px at 85% 0%, rgba(17, 83, 230, .32), transparent 65%),
    radial-gradient(600px 380px at 5% 100%, rgba(34, 211, 238, .12), transparent 65%);
  pointer-events: none;
}
.section.dark > .container { position: relative; z-index: 1; }

.section-head {
  max-width: 760px;
  margin: 0 auto 52px;
  text-align: center;
}
.section-head.left { margin-left: 0; text-align: left; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--blue-50);
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.eyebrow.on-dark {
  background: rgba(59, 130, 246, .14);
  color: #8fb6ff;
}

.section-title {
  margin: 18px 0 14px;
  font-size: clamp(26px, 3.2vw, 38px);
  line-height: 1.28;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--ink);
}
.section.dark .section-title { color: #fff; }
.section-desc {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.85;
}
.section.dark .section-desc { color: #a9bbd4; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
    background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
  white-space: nowrap;
}
.btn .icon { width: 17px; height: 17px; }
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: linear-gradient(135deg, #1153e6, #2f7bff);
  color: #fff;
  box-shadow: 0 12px 26px -12px rgba(17, 83, 230, .8);
}
.btn-primary:hover { box-shadow: 0 18px 34px -12px rgba(17, 83, 230, .9); }

.btn-ghost {
  background: rgba(255, 255, 255, .06);
  border-color: rgba(255, 255, 255, .26);
  color: #fff;
  backdrop-filter: blur(6px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, .13); border-color: rgba(255, 255, 255, .45); }

.btn-outline {
  background: #fff;
  border-color: var(--line);
  color: var(--ink);
}
.btn-outline:hover { border-color: var(--blue); color: var(--blue); box-shadow: var(--shadow); }

.btn-sm { padding: 10px 20px; font-size: 14px; }

.center-action { margin-top: 42px; text-align: center; }

/* 滚动出现动效 */
.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .75s var(--ease), transform .75s var(--ease);
  will-change: opacity, transform;
}
.js .reveal.in { opacity: 1; transform: none; }

/* ---------- 3. 头部导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s;
}
.site-header.scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px -24px rgba(16, 42, 80, .5);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
}
.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, #1153e6, #22d3ee);
  display: grid;
  place-items: center;
  box-shadow: 0 10px 20px -10px rgba(17, 83, 230, .8);
}
.brand-mark svg { width: 30px; height: 30px; display: block; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--ink);
}
.brand-text small {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .16em;
  color: #8b9ab0;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav > a {
  position: relative;
  padding: 9px 14px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  color: #44536a;
  transition: color .2s, background .2s;
}
.main-nav > a:hover { color: var(--blue); background: var(--blue-50); }
.main-nav > a.active { color: var(--blue); font-weight: 700; }
.main-nav > a.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--blue);
  transform: translateX(-50%);
}
.nav-cta { display: none; }

.header-cta { padding: 11px 22px; font-size: 14px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: var(--blue-50);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform .3s var(--ease), opacity .2s;
}
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mask {
  position: fixed;
  inset: 0;
  z-index: 85;
  background: rgba(4, 10, 22, .48);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s;
}
body.nav-open .nav-mask { opacity: 1; pointer-events: auto; }

/* ---------- 4. 首页 Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 78px 0 122px;
  background: #060e1d;
  color: #fff;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(900px 520px at 78% 6%, rgba(17, 83, 230, .5), transparent 62%),
    radial-gradient(640px 420px at 8% 96%, rgba(34, 211, 238, .17), transparent 62%);
  pointer-events: none;
}
.hero::after {
  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: 68px 68px;
  -webkit-mask-image: radial-gradient(70% 70% at 50% 40%, #000 25%, transparent 100%);
  mask-image: radial-gradient(70% 70% at 50% 40%, #000 25%, transparent 100%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.04fr .96fr;
  gap: 56px;
  align-items: center;
}
.hero-copy h1 {
  margin: 22px 0 0;
  font-size: clamp(38px, 4.7vw, 62px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -.02em;
}
.grad-text {
  background: linear-gradient(115deg, #7dd3fc 0%, #60a5fa 45%, #c7d2fe 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero-sub {
  max-width: 560px;
  margin: 24px 0 34px;
  font-size: 16.5px;
  line-height: 1.9;
  color: #b7c6dd;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 34px;
  list-style: none;
  font-size: 14px;
  color: #9db0cb;
}
.hero-points li { display: inline-flex; align-items: center; gap: 8px; }
.hero-points li::before {
  content: "";
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(34, 197, 94, .16);
  border: 1px solid rgba(74, 222, 128, .5);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234ade80' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m20 6-11 11-5-5'/%3E%3C/svg%3E");
  background-size: 10px 10px;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-media { position: relative; }
.hero-frame {
  position: relative;
  aspect-ratio: 4 / 3.5;
  border-radius: 26px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .16);
  background: linear-gradient(135deg, #12233f, #0a1a33);
  box-shadow: 0 50px 90px -40px rgba(0, 0, 0, .9);
}
.hero-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(6, 14, 29, 0) 40%, rgba(6, 14, 29, .55));
}
.float-card {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 17px;
  border-radius: 15px;
  background: rgba(8, 20, 39, .74);
  border: 1px solid rgba(255, 255, 255, .17);
  backdrop-filter: blur(14px);
  box-shadow: 0 24px 40px -20px rgba(0, 0, 0, .8);
}
.float-card .fc-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: rgba(59, 130, 246, .2);
  color: #7dd3fc;
}
.float-card b {
  display: block;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.15;
  color: #fff;
}
.float-card span { font-size: 11px; color: #93a7c4; letter-spacing: .04em; }
.fc-1 { left: -26px; bottom: 34px; }
.fc-2 { right: -18px; top: 30px; }

/* 数据条 */
.stat-band { position: relative; z-index: 3; margin-top: -58px; }
.stat-band .inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 30px 10px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: 0 30px 70px -40px rgba(16, 42, 80, .45);
}
.stat { text-align: center; padding: 2px 12px; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat b {
  display: block;
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 800;
  line-height: 1.15;
  color: var(--blue);
  letter-spacing: -.02em;
}
.stat span { font-size: 13.5px; color: var(--muted); }

/* ---------- 5. 分类卡片 ---------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.cat-card {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 330px;
  padding: 24px;
  border-radius: var(--radius);
  overflow: hidden;
  background: #0b1526;
  color: #fff;
  isolation: isolate;
}
.cat-card img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .7s var(--ease);
}
.cat-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(6, 14, 29, .1) 18%, rgba(6, 14, 29, .88) 100%);
  transition: opacity .4s;
}
.cat-card:hover img { transform: scale(1.07); }
.cat-card:hover::after { opacity: .92; }
.cat-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .2);
  backdrop-filter: blur(8px);
  color: #dbeafe;
}
.cat-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 6px; }
.cat-card p { font-size: 13.5px; line-height: 1.7; color: #c3d2e6; margin-bottom: 14px; }
.cat-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: #93c5fd;
}
.cat-more .icon { width: 15px; height: 15px; transition: transform .3s; }
.cat-card:hover .cat-more .icon { transform: translateX(4px); }

/* ---------- 6. 产品卡片 ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(258px, 1fr));
  gap: 24px;
}
.product-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
}
.product-card:hover {
  transform: translateY(-6px);
  border-color: #bfd3fb;
  box-shadow: var(--shadow-hover);
}
.product-thumb {
  display: block;
  position: relative;
  aspect-ratio: 16 / 11;
  overflow: hidden;
  background: linear-gradient(135deg, #dbeafe, #f2f7ff);
}
.product-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .55s var(--ease);
}
.product-card:hover .product-thumb img { transform: scale(1.05); }
.product-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 20px 20px 22px;
}
.product-cat {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--blue);
  text-transform: uppercase;
}
.product-name {
  margin: 7px 0 2px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}
.product-name a:hover { color: var(--blue); }
.product-model { font-size: 12px; color: #94a3b8; letter-spacing: .02em; }
.product-desc {
  margin: 10px 0 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--blue);
}
.product-link .icon { width: 15px; height: 15px; transition: transform .3s; }
.product-link:hover .icon { transform: translateX(4px); }

/* ---------- 7. 优势 / 特性 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature-card {
  padding: 28px 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: #bfd3fb;
  box-shadow: var(--shadow);
}
.icon-box {
  width: 48px;
  height: 48px;
  margin-bottom: 18px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: var(--blue-50);
  color: var(--blue);
}
.icon-box .icon { width: 22px; height: 22px; }
.feature-card h3 { font-size: 16.5px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.feature-card p { font-size: 14px; line-height: 1.8; color: var(--muted); }

/* ---------- 8. 图文分栏 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.media-frame {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: 22px;
  overflow: hidden;
  background: linear-gradient(135deg, #dbeafe, #f2f7ff);
  box-shadow: 0 34px 70px -42px rgba(16, 42, 80, .55);
}
.media-frame img { width: 100%; height: 100%; object-fit: cover; }
.media-frame .badge-float {
  position: absolute;
  left: 18px;
  bottom: 18px;
  padding: 10px 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  box-shadow: 0 14px 30px -16px rgba(16, 42, 80, .5);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
}
.media-frame .badge-float .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, .16);
}
.split-copy .section-title { margin-top: 18px; }
.split-copy p { font-size: 15px; line-height: 1.95; color: var(--muted); margin-bottom: 14px; }

.check-list {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: 22px 0 30px;
}
.check-list li {
  display: flex;
  gap: 11px;
  font-size: 14.5px;
  color: var(--ink-soft);
  font-weight: 500;
}
.check-list .icon {
  width: 19px;
  height: 19px;
  margin-top: 3px;
  color: var(--blue);
}

.mini-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 26px 0 30px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.mini-stats b {
  display: block;
  font-size: 26px;
  font-weight: 800;
  color: var(--blue);
  line-height: 1.2;
}
.mini-stats span { font-size: 12.5px; color: var(--muted); }

/* ---------- 9. 解决方案 ---------- */
.sol-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 52px 0;
  border-top: 1px solid var(--line);
}
.sol-row:first-child { border-top: 0; padding-top: 0; }
.sol-row.reverse .sol-media { order: 2; }
.sol-media {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: 22px;
  overflow: hidden;
  background: linear-gradient(135deg, #dbeafe, #f2f7ff);
  box-shadow: 0 34px 70px -44px rgba(16, 42, 80, .55);
}
.sol-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.sol-row:hover .sol-media img { transform: scale(1.04); }
.sol-index {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .16em;
  color: var(--blue);
}
.sol-body h2 {
  margin: 9px 0 14px;
  font-size: clamp(23px, 2.6vw, 32px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--ink);
}
.sol-body > p { font-size: 14.5px; line-height: 1.9; color: var(--muted); }
.sol-pains {
  list-style: none;
  display: grid;
  gap: 8px;
  margin: 18px 0;
}
.sol-pains li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  color: var(--muted);
}
.sol-pains li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #cbd5e1;
}
.sol-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 22px 0 24px;
}
.sol-values div {
  padding: 12px 8px;
  border-radius: 11px;
  background: var(--blue-50);
  text-align: center;
  font-size: 12.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--blue);
}

/* ---------- 10. 页头 Banner ---------- */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: 78px 0 66px;
  background: #071224;
  color: #fff;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--hero-img, none);
  background-size: cover;
  background-position: center;
  opacity: .42;
  transform: scale(1.02);
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(4, 10, 22, .94) 8%, rgba(4, 10, 22, .68) 58%, rgba(4, 10, 22, .42));
}
.page-hero .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 13px;
  color: #93a7c4;
}
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { opacity: .5; }
.page-hero h1 {
  margin: 16px 0 14px;
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.015em;
}
.page-hero p {
  max-width: 660px;
  font-size: 15.5px;
  line-height: 1.9;
  color: #b7c6dd;
}

/* ---------- 11. 关于我们 ---------- */
.timeline { display: grid; }
.tl-item {
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 28px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
  position: relative;
}
.tl-item:last-child { border-bottom: 1px solid var(--line); }
.tl-year {
  font-size: 24px;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: -.01em;
}
.tl-body h3 { font-size: 16px; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.tl-body p { font-size: 14px; line-height: 1.8; color: var(--muted); }

.culture-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.culture-card {
  padding: 30px 26px;
  border-radius: var(--radius);
  background: linear-gradient(160deg, #f7faff, #eef4ff);
  border: 1px solid #e0eaff;
}
.culture-card .icon-box { background: #fff; box-shadow: 0 10px 22px -14px rgba(17, 83, 230, .5); }
.culture-card h3 { font-size: 17px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.culture-card p { font-size: 14px; line-height: 1.85; color: var(--muted); }

.honor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.honor-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: border-color .3s, transform .3s var(--ease);
}
.honor-item:hover { border-color: #bfd3fb; transform: translateY(-3px); }
.honor-item .icon { width: 24px; height: 24px; color: var(--blue); }
.honor-item b { display: block; font-size: 14.5px; color: var(--ink); }
.honor-item span { font-size: 12px; color: var(--muted); }

/* ---------- 12. 产品中心 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}
.filter-tabs { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-btn {
  padding: 9px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all .25s var(--ease);
}
.filter-btn:hover { color: var(--blue); border-color: #bfd3fb; }
.filter-btn.active {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
  box-shadow: 0 10px 22px -12px rgba(17, 83, 230, .8);
}
.filter-count { font-size: 13px; color: var(--muted); }

/* 产品详情 */
.crumb-light {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 24px 0 0;
  font-size: 13px;
  color: var(--muted);
}
.crumb-light a:hover { color: var(--blue); }
.crumb-light .sep { opacity: .5; }

.pdp {
  display: grid;
  grid-template-columns: 1.04fr .96fr;
  gap: 52px;
  align-items: start;
  margin: 30px 0 64px;
}
.pdp-media {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: 22px;
  overflow: hidden;
  background: linear-gradient(135deg, #dbeafe, #f2f7ff);
  border: 1px solid var(--line);
  box-shadow: 0 34px 70px -44px rgba(16, 42, 80, .5);
}
.pdp-media img { width: 100%; height: 100%; object-fit: cover; }
.pdp-info h1 {
  margin: 10px 0 6px;
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--ink);
}
.pdp-model { font-size: 13px; color: #94a3b8; letter-spacing: .04em; }
.pdp-tagline {
  margin-top: 16px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.7;
  color: var(--ink-soft);
}
.pdp-desc { margin-top: 12px; font-size: 14.5px; line-height: 1.9; color: var(--muted); }
.pdp-points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 18px;
  margin: 22px 0;
  list-style: none;
}
.pdp-points li {
  display: flex;
  gap: 9px;
  font-size: 14px;
  color: var(--ink-soft);
}
.pdp-points .icon { width: 18px; height: 18px; margin-top: 3px; color: var(--blue); }
.pdp-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 22px; }
.scene-tags { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.scene-tags em { font-style: normal; font-size: 12.5px; color: var(--muted); margin-right: 2px; }
.scene-tags span {
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--ink-soft);
}
.pdp-detail {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 26px;
  align-items: start;
}
.panel {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
}
.panel h2 {
  margin-bottom: 18px;
  font-size: 19px;
  font-weight: 800;
  color: var(--ink);
}
.spec-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.spec-table th {
  width: 34%;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
  text-align: left;
  vertical-align: top;
  font-weight: 500;
  color: var(--muted);
}
.spec-table td {
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
  color: var(--ink);
  font-weight: 600;
}
.spec-table tr:last-child th,
.spec-table tr:last-child td { border-bottom: 0; }
.cap-list { list-style: none; display: grid; gap: 14px; }
.cap-list li {
  display: flex;
  gap: 12px;
  padding: 14px;
  border-radius: 12px;
  background: var(--surface);
}
.cap-list .icon { width: 20px; height: 20px; margin-top: 3px; color: var(--blue); }
.cap-list b { display: block; font-size: 14px; color: var(--ink); margin-bottom: 2px; }
.cap-list span { font-size: 12.5px; color: var(--muted); line-height: 1.6; }

/* ---------- 13. 招商加盟 ---------- */
.mode-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.mode-card {
  display: flex;
  flex-direction: column;
  padding: 28px 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
}
.mode-card:hover {
  transform: translateY(-5px);
  border-color: #bfd3fb;
  box-shadow: var(--shadow);
}
.mode-tag {
  align-self: flex-start;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--blue-50);
  color: var(--blue);
  font-size: 11.5px;
  font-weight: 700;
}
.mode-card h3 { margin: 14px 0 8px; font-size: 18px; font-weight: 700; color: var(--ink); }
.mode-card > p { font-size: 13.5px; line-height: 1.75; color: var(--muted); }
.mode-card ul {
  list-style: none;
  display: grid;
  gap: 8px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-soft);
}
.mode-card li { position: relative; padding-left: 16px; }
.mode-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--blue);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.steps.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1100px) {
  .steps.cols-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .steps.cols-4 { grid-template-columns: 1fr; }
}

.step {
  position: relative;
  padding: 26px 24px 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  counter-increment: step;
}
.steps { counter-reset: step; }
.step::before {
  content: "0" counter(step);
  display: block;
  margin-bottom: 10px;
  font-size: 28px;
  font-weight: 800;
  line-height: 1;
  color: #c9dbfd;
}
.step h3 { font-size: 15.5px; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.step p { font-size: 13.5px; line-height: 1.75; color: var(--muted); }

.support-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.support-card {
  display: flex;
  gap: 15px;
  padding: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
}
.support-card .icon-box {
  width: 42px;
  height: 42px;
  margin: 0;
  flex: 0 0 auto;
  border-radius: 11px;
}
.support-card h3 { font-size: 14.5px; font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.support-card p { font-size: 12.5px; line-height: 1.7; color: var(--muted); }

.faq-list { max-width: 900px; margin: 0 auto; }
.faq-item {
  margin-bottom: 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color .25s, box-shadow .25s;
}
.faq-item[open] { border-color: #bfd3fb; box-shadow: 0 18px 40px -32px rgba(16, 42, 80, .5); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-size: 22px;
  font-weight: 400;
  line-height: 1;
  color: var(--blue);
  transition: transform .25s;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item p {
  padding: 0 22px 20px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

.join {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 52px;
  align-items: start;
}
.join-info .section-title { margin-top: 18px; }
.join-info p { font-size: 14.5px; line-height: 1.9; color: var(--muted); }
.join-contact { display: grid; gap: 12px; margin-top: 26px; }
.join-contact a,
.join-contact div {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fff;
  font-size: 14px;
  color: var(--ink-soft);
  transition: border-color .25s, transform .25s var(--ease);
}
.join-contact a:hover { border-color: #bfd3fb; transform: translateX(3px); }
.join-contact .icon { width: 19px; height: 19px; color: var(--blue); }
.join-contact b { color: var(--ink); font-weight: 700; }

/* ---------- 14. 表单 ---------- */
.form-card {
  padding: 34px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
}
.form-card h3 { font-size: 19px; font-weight: 800; color: var(--ink); }
.form-card .form-sub { margin: 6px 0 24px; font-size: 13px; color: var(--muted); }
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.field { display: flex; flex-direction: column; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13px; font-weight: 600; color: var(--ink); }
.field label .req { color: #ef4444; margin-left: 2px; }
.input, .select, .textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fbfdff;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
  outline: none;
  transition: border-color .2s, box-shadow .2s, background .2s;
  -webkit-appearance: none;
  appearance: none;
}
.textarea { min-height: 108px; resize: vertical; }
.select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7a90' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 16px;
  padding-right: 40px;
}
.input::placeholder, .textarea::placeholder { color: #a9b6c7; }
.input:focus, .select:focus, .textarea:focus {
  border-color: var(--blue);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(17, 83, 230, .1);
}
.input.invalid, .select.invalid, .textarea.invalid {
  border-color: #ef4444;
  box-shadow: 0 0 0 4px rgba(239, 68, 68, .1);
}
.form-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 22px;
}
.form-note { font-size: 12px; color: #94a3b8; }
.form-success {
  display: none;
  align-items: flex-start;
  gap: 12px;
  margin-top: 20px;
  padding: 16px 18px;
  border-radius: 12px;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  font-size: 13.5px;
  color: #065f46;
  line-height: 1.7;
}
.form-success.show { display: flex; }
.form-success .icon { width: 20px; height: 20px; margin-top: 2px; color: #10b981; }

/* ---------- 15. 联系我们 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 18px;
}
.contact-card {
  padding: 24px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  transition: border-color .25s, transform .25s var(--ease);
}
.contact-card:hover { border-color: #bfd3fb; transform: translateY(-3px); }
.contact-card .icon-box {
  width: 42px;
  height: 42px;
  margin-bottom: 14px;
  border-radius: 11px;
}
.contact-card h3 { font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.contact-card p, .contact-card a { font-size: 13.5px; line-height: 1.75; color: var(--muted); }
.contact-card a:hover { color: var(--blue); }
.address-card p { font-size: 14px; color: var(--ink-soft); }

.dept-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.dept-card {
  display: flex;
  gap: 15px;
  padding: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
}
.dept-card .icon-box { flex: 0 0 auto; width: 42px; height: 42px; margin: 0; border-radius: 11px; }
.dept-card h3 { font-size: 14.5px; font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.dept-card p { font-size: 12.5px; line-height: 1.8; color: var(--muted); }
.dept-card a { color: var(--blue); font-weight: 600; }

.visit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.visit-item {
  display: flex;
  gap: 14px;
  padding: 22px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--line);
}
.visit-item .icon-box { flex: 0 0 auto; width: 42px; height: 42px; margin: 0; border-radius: 11px; }
.visit-item h3 { font-size: 14.5px; font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.visit-item p { font-size: 12.5px; line-height: 1.8; color: var(--muted); }

/* ---------- 16. CTA 区块 ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 48px;
  border-radius: 26px;
  background: linear-gradient(115deg, #0a1a33 0%, #0f3c8f 55%, #1153e6 100%);
  color: #fff;
  box-shadow: 0 40px 80px -50px rgba(17, 83, 230, .8);
}
.cta-band::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -100px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 211, 238, .32), transparent 70%);
  pointer-events: none;
}
.cta-band h2 {
  position: relative;
  font-size: clamp(22px, 2.6vw, 32px);
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 8px;
}
.cta-band p { position: relative; font-size: 14.5px; color: #c3d2e6; }
.cta-band .btn { position: relative; flex: 0 0 auto; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* 首页招商 teaser */
.franchise-teaser .split { align-items: center; }
.franchise-teaser .section-title { color: #fff; }
.franchise-teaser p { color: #a9bbd4; }
.glass-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .14);
  background: rgba(255, 255, 255, .1);
}
.glass-panel div {
  padding: 26px 22px;
  background: rgba(8, 20, 39, .55);
  backdrop-filter: blur(10px);
}
.glass-panel b {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.glass-panel span { font-size: 12.5px; color: #93a7c4; }

/* ---------- 17. 页脚 ---------- */
.site-footer {
  padding-top: 64px;
  background: #060e1d;
  color: #93a7c4;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.55fr 1fr 1fr 1.45fr;
  gap: 44px;
  padding-bottom: 46px;
}
.footer-brand .brand { margin-bottom: 18px; }
.footer-brand .brand-text strong { color: #fff; }
.footer-brand .brand-text small { color: #64748b; }
.footer-brand p { font-size: 13.5px; line-height: 1.85; color: #8fa0b8; max-width: 300px; }
.footer-hotline { margin-top: 20px; }
.footer-hotline span { display: block; font-size: 12px; color: #64748b; letter-spacing: .06em; }
.footer-hotline b {
  font-size: 23px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .01em;
}
.footer-title {
  margin-bottom: 18px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .02em;
}
.footer-links { list-style: none; display: grid; gap: 10px; font-size: 13.5px; }
.footer-links a { color: #93a7c4; transition: color .2s, padding-left .2s; }
.footer-links a:hover { color: #fff; padding-left: 3px; }
.footer-contact { list-style: none; display: grid; gap: 13px; font-size: 13.5px; }
.footer-contact li { display: flex; gap: 10px; line-height: 1.7; }
.footer-contact .icon { width: 17px; height: 17px; margin-top: 3px; color: #4f7fd9; }
.footer-contact a:hover { color: #fff; }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 20px 0;
  border-top: 1px solid rgba(255, 255, 255, .08);
  font-size: 12.5px;
  color: #64748b;
}

/* ---------- 18. 移动底部操作栏 ---------- */
.mobile-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 80;
  display: none;
  background: rgba(255, 255, 255, .97);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
}
.mobile-bar a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 9px 0 8px;
  font-size: 11px;
  font-weight: 600;
  color: #52627a;
}
.mobile-bar a .icon { width: 20px; height: 20px; color: var(--blue); }
.mobile-bar a.primary { color: var(--blue); }

/* ---------- 19. Toast ---------- */
.toast {
  position: fixed;
  top: 92px;
  left: 50%;
  z-index: 200;
  max-width: min(90vw, 420px);
  padding: 12px 20px;
  border-radius: 999px;
  background: rgba(10, 21, 38, .94);
  color: #fff;
  font-size: 13.5px;
  font-weight: 500;
  text-align: center;
  box-shadow: 0 20px 40px -18px rgba(0, 0, 0, .5);
  opacity: 0;
  transform: translate(-50%, -12px);
  transition: opacity .3s, transform .3s var(--ease);
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 20. 响应式 ---------- */
@media (max-width: 1100px) {
  .hero-inner { gap: 36px; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .mode-grid { grid-template-columns: repeat(2, 1fr); }
  .support-grid, .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1.4fr; }
  .footer-grid .footer-col-products { display: none; }
}

@media (max-width: 1024px) {
  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 90;
    width: min(84vw, 360px);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 96px 24px 36px;
    background: #fff;
    box-shadow: -24px 0 60px rgba(4, 10, 22, .16);
    transform: translateX(102%);
    transition: transform .38s var(--ease);
    overflow-y: auto;
  }
  body.nav-open .main-nav { transform: translateX(0); }
  .main-nav > a {
    padding: 15px 6px;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
  }
  .main-nav > a:hover { background: transparent; }
  .main-nav > a.active { color: var(--blue); }
  .main-nav > a.active::after { display: none; }
  .nav-cta {
    display: inline-flex;
    margin-top: 24px;
    padding: 14px 20px;
    border-bottom: 0;
  }
  .header-cta { display: none; }
  .nav-toggle { display: flex; position: relative; z-index: 95; }
  body.nav-open .nav-toggle { background: var(--blue-50); }
  body.nav-open { overflow: hidden; }
}

@media (max-width: 960px) {
  .section { padding: 68px 0; }
  .hero { padding: 58px 0 108px; }
  .hero-inner { grid-template-columns: 1fr; gap: 46px; }
  .hero-media { max-width: 560px; width: 100%; }
  .hero-sub { margin: 20px 0 28px; }
  .stat-band { margin-top: -50px; }
  .split, .pdp, .sol-row { grid-template-columns: 1fr; gap: 34px; }
  .sol-row { padding: 40px 0; }
  .sol-row.reverse .sol-media { order: 0; }
  .pdp { margin-bottom: 48px; }
  .pdp-detail, .join { grid-template-columns: 1fr; gap: 32px; }
  .culture-grid, .steps { grid-template-columns: repeat(2, 1fr); }
  .visit-grid, .dept-grid { grid-template-columns: repeat(2, 1fr); }
  .glass-panel { max-width: 480px; }
  .page-hero { padding: 62px 0 54px; }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }
  body { padding-bottom: 62px; }
  .container { padding: 0 18px; }
  .section { padding: 56px 0; }
  .section-head { margin-bottom: 34px; }
  .brand-mark { width: 38px; height: 38px; border-radius: 11px; }
  .brand-mark svg { width: 27px; height: 27px; }
  .brand-text strong { font-size: 16.5px; }
  .brand-text small { font-size: 8px; letter-spacing: .14em; }

  .hero { padding: 44px 0 96px; }
  .hero-copy h1 { font-size: clamp(33px, 8.6vw, 46px); }
  .hero-sub { font-size: 15px; line-height: 1.85; }
  .hero-actions .btn { flex: 1 1 auto; justify-content: center; }
  .hero-points { gap: 14px 20px; font-size: 13px; }
  .float-card { padding: 10px 13px; }
  .float-card b { font-size: 17px; }
  .float-card span { font-size: 10.5px; }
  .fc-1 { left: 8px; bottom: 14px; }
  .fc-2 { right: 8px; top: 14px; }
  .hero-frame { border-radius: 20px; }

  .stat-band { margin-top: -44px; }
  .stat-band .inner { grid-template-columns: repeat(2, 1fr); padding: 8px; }
  .stat { padding: 16px 8px; border-right: 0; }
  .stat:nth-child(odd) { border-right: 1px solid var(--line); }
  .stat:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }

  .cat-grid { grid-template-columns: 1fr; gap: 14px; }
  .cat-card { min-height: 230px; }
  .cat-card p { margin-bottom: 10px; }

  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
  .product-body { padding: 14px 14px 16px; }
  .product-name { font-size: 14.5px; line-height: 1.4; }
  .product-desc { font-size: 12.5px; margin: 8px 0 12px; -webkit-line-clamp: 2; }
  .product-cat { font-size: 10.5px; letter-spacing: .06em; }
  .product-link { font-size: 12.5px; }
  .product-thumb { aspect-ratio: 4 / 3; }

  .feature-grid, .culture-grid, .mode-grid, .support-grid, .steps,
  .honor-grid, .visit-grid, .dept-grid { grid-template-columns: 1fr; }
  .feature-card { padding: 22px; }
  .mode-card { padding: 22px; }

  .mini-stats { gap: 10px; }
  .mini-stats b { font-size: 22px; }
  .timeline .tl-item, .tl-item { grid-template-columns: 1fr; gap: 4px; padding: 20px 0; }
  .tl-year { font-size: 20px; }

  .pdp-points { grid-template-columns: 1fr; }
  .pdp { gap: 26px; }
  .panel { padding: 22px; }
  .pdp-actions .btn { flex: 1 1 auto; justify-content: center; }

  .sol-values { grid-template-columns: 1fr; }
  .sol-values div { padding: 10px; }

  .filter-bar { flex-direction: column; align-items: flex-start; gap: 12px; }
  .filter-btn { padding: 8px 14px; font-size: 12.5px; }

  .form-card { padding: 24px 20px; }
  .form-grid { grid-template-columns: 1fr; gap: 14px; }
  .form-footer { flex-direction: column; align-items: stretch; }
  .form-footer .btn { width: 100%; }

  .address-card { grid-column: 1 / -1; }
  .contact-grid { grid-template-columns: 1fr 1fr; }
  .contact-card { padding: 18px; }

  .cta-band { flex-direction: column; align-items: flex-start; padding: 30px 24px; border-radius: 20px; }
  .cta-band .btn { width: 100%; }
  .cta-actions { width: 100%; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 34px; }
  .footer-grid .footer-col-products { display: block; }
  .footer-brand p { max-width: none; }
  .site-footer { padding-top: 48px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 6px; padding-bottom: 18px; }
  .footer-bottom span:last-child { display: none; }

  .mobile-bar { display: flex; }
  .toast { top: 76px; }

  .glass-panel { grid-template-columns: 1fr 1fr; }
  .glass-panel b { font-size: 23px; }
  .page-hero { padding: 48px 0 42px; }
}

@media (max-width: 420px) {
  .product-grid { grid-template-columns: 1fr 1fr; }
  .product-model { font-size: 11px; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
}

/* ---------- 21. 首页解决方案卡片 ---------- */
.sol-preview-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.sol-card {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 300px;
  padding: 22px;
  border-radius: var(--radius);
  overflow: hidden;
  isolation: isolate;
  color: #fff;
}
.sol-card img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .7s var(--ease);
}
.sol-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(6, 14, 29, .08) 20%, rgba(6, 14, 29, .9) 100%);
}
.sol-card:hover img { transform: scale(1.06); }
.sol-card-body { width: 100%; }
.sol-card-body span {
  font-size: 11.5px;
  color: #bfdbfe;
  letter-spacing: .04em;
}
.sol-card-body h3 { margin: 5px 0 8px; font-size: 17.5px; font-weight: 700; }
.sol-card-body em {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-style: normal;
  font-size: 12.5px;
  color: #93c5fd;
}
.sol-card-body em .icon { width: 14px; height: 14px; }
.sol-subtitle {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: .04em;
}
.section.dark .check-list li { color: #d5e2f3; }
.section.dark .check-list .icon { color: #7dd3fc; }
.cat-body { width: 100%; }

/* 招商 teaser 图文 */
.teaser-media { position: relative; padding-bottom: 56px; }
.teaser-media .media-frame { aspect-ratio: 4 / 3.1; }
.teaser-panel { position: absolute; left: 26px; right: 26px; bottom: 0; }
[data-icon] { display: inline-flex; align-items: center; justify-content: center; }
.check-list [data-icon], .pdp-points [data-icon] { margin-top: 2px; }

@media (max-width: 1100px) {
  .sol-preview-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .sol-preview-grid { grid-template-columns: 1fr; }
  .sol-card { min-height: 240px; }
  .teaser-media { padding-bottom: 0; }
  .teaser-panel { position: static; margin-top: 14px; }
  .teaser-panel div { padding: 18px 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .btn:hover, .product-card:hover, .cat-card:hover img { transform: none; }
}