/* ==========================================================================
   科庆集团官网 v2 · 深空科技蓝设计系统
   基调取自集团画册与品牌 logo：深空蓝黑底 × 品牌蓝青渐变 × 实景大图
   「以消防通风为核心，构建全产业链生态」——科技感 · 高级感 · 工业实力
   ========================================================================== */

:root {
  /* 深空底色 */
  --ink-950: #04070D;
  --ink-900: #060D1A;      /* 主深底 */
  --ink-800: #0A1526;      /* 深区卡片 */
  --ink-700: #102039;
  /* 品牌蓝（源自 logo 渐变） */
  --blue-600: #1E7FE0;
  --blue-500: #2B96F0;
  --blue-400: #38B6FF;
  --cyan-300: #52DCFF;
  /* 浅色内容区 */
  --paper: #F4F7FB;
  --white: #FFFFFF;
  --text: #0C1C30;
  --muted: #5C6C82;
  --line: rgba(12, 28, 48, 0.08);

  /* 深区文字 */
  --w-90: rgba(255, 255, 255, 0.92);
  --w-70: rgba(255, 255, 255, 0.72);
  --w-50: rgba(255, 255, 255, 0.52);
  --w-16: rgba(255, 255, 255, 0.16);
  --w-08: rgba(255, 255, 255, 0.08);
  --w-04: rgba(255, 255, 255, 0.045);

  /* 渐变 */
  --grad-brand: linear-gradient(115deg, #1E7FE0 0%, #38B6FF 52%, #52DCFF 100%);
  --grad-brand-soft: linear-gradient(115deg, rgba(30,127,224,0.16), rgba(82,220,255,0.10));
  --grad-ink: linear-gradient(180deg, #081120 0%, #060D1A 100%);

  /* 光效 */
  --glow-blue: 0 0 44px rgba(56, 182, 255, 0.34);
  --shadow-card: 0 1px 2px rgba(8, 20, 40, 0.04), 0 6px 18px rgba(8, 20, 40, 0.06), 0 18px 44px rgba(8, 20, 40, 0.07);
  --shadow-card-hover: 0 2px 6px rgba(8, 20, 40, 0.06), 0 14px 34px rgba(8, 20, 40, 0.12), 0 30px 70px rgba(8, 20, 40, 0.14);
  --shadow-nav: 0 4px 30px rgba(3, 8, 16, 0.45);

  --radius: 14px;
  --radius-lg: 18px;
  --radius-sm: 10px;

  --font: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  --container: 1240px;
  --nav-h: 74px;
  --ease: cubic-bezier(0.22, 0.61, 0.24, 1);
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--paper);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
::selection { background: rgba(56, 182, 255, 0.28); color: var(--ink-900); }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 28px; }

/* 渐变文字 */
.grad-text {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  height: 50px; padding: 0 32px;
  border-radius: 25px;
  font-size: 15px; font-weight: 700; letter-spacing: 0.03em;
  white-space: nowrap;
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease),
              background 0.28s var(--ease), border-color 0.28s var(--ease), color 0.28s var(--ease);
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn svg { width: 17px; height: 17px; flex: none; }

.btn-primary {
  background: var(--grad-brand);
  background-size: 150% 150%;
  background-position: 0% 50%;
  color: #FFFFFF;
  box-shadow: 0 8px 26px rgba(30, 127, 224, 0.42);
}
.btn-primary:hover {
  background-position: 95% 50%;
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(56, 182, 255, 0.5);
}

.btn-ghost-light {
  border: 1px solid rgba(255, 255, 255, 0.38);
  color: var(--white);
  background: rgba(255, 255, 255, 0.04);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.btn-ghost-light:hover {
  border-color: var(--cyan-300);
  color: var(--cyan-300);
  background: rgba(82, 220, 255, 0.08);
  transform: translateY(-2px);
}

.btn-ghost-dark {
  border: 1px solid rgba(30, 127, 224, 0.55);
  color: var(--blue-600);
  background: transparent;
}
.btn-ghost-dark:hover {
  background: var(--grad-brand);
  border-color: transparent;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(30, 127, 224, 0.4);
}

.btn-lg { height: 56px; padding: 0 42px; border-radius: 28px; font-size: 16px; }
.btn-block { width: 100%; }

/* ---------- 导航 ---------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-h);
  transition: background 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s var(--ease);
  background: transparent;
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: rgba(5, 10, 20, 0.82);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  backdrop-filter: blur(18px) saturate(1.4);
  border-bottom-color: rgba(255, 255, 255, 0.07);
  box-shadow: var(--shadow-nav);
}
.navbar .container { height: 100%; display: flex; align-items: center; gap: 30px; }

.brand { display: flex; align-items: center; gap: 12px; flex: none; }
.brand img.mark { height: 40px; width: auto; filter: drop-shadow(0 2px 10px rgba(56, 182, 255, 0.35)); }
.brand-text { line-height: 1.22; }
.brand-text strong {
  display: block; color: var(--white);
  font-size: 20px; font-weight: 800; letter-spacing: 0.10em;
}
.brand-text span {
  display: block; color: var(--w-50);
  font-size: 10px; letter-spacing: 0.30em; text-transform: uppercase;
}

.nav-menu { display: flex; align-items: center; gap: 4px; margin: 0 auto; }
.nav-menu a {
  position: relative; display: block;
  padding: 10px 15px;
  color: var(--w-70); font-size: 15px; font-weight: 500;
  transition: color 0.2s;
}
.nav-menu a::after {
  content: ""; position: absolute; left: 15px; right: 15px; bottom: 4px;
  height: 2px; border-radius: 1px;
  background: var(--grad-brand);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav-menu a:hover { color: var(--white); }
.nav-menu a:hover::after, .nav-menu a.active::after { transform: scaleX(1); }
.nav-menu a.active { color: var(--cyan-300); font-weight: 600; }

.nav-right { display: flex; align-items: center; gap: 20px; flex: none; }
.nav-tel { display: flex; align-items: center; gap: 8px; color: var(--white); font-size: 15.5px; font-weight: 700; letter-spacing: 0.02em; }
.nav-tel svg { width: 17px; height: 17px; color: var(--cyan-300); }
.nav-tel:hover { color: var(--cyan-300); }
.navbar .btn-quote { height: 42px; padding: 0 26px; border-radius: 21px; font-size: 14px; }

.nav-toggle { display: none; width: 44px; height: 44px; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--white); border-radius: 1px; transition: transform 0.3s var(--ease), opacity 0.2s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-drawer {
  display: none; position: fixed; top: var(--nav-h); left: 0; right: 0; z-index: 999;
  background: rgba(5, 10, 20, 0.97);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  padding: 12px 28px 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  transform: translateY(-10px); opacity: 0; pointer-events: none;
  transition: transform 0.32s var(--ease), opacity 0.32s var(--ease);
}
.nav-drawer.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
.nav-drawer a { display: block; padding: 15px 4px; color: var(--w-70); font-size: 16px; border-bottom: 1px solid var(--w-08); }
.nav-drawer a.active { color: var(--cyan-300); font-weight: 700; }
.nav-drawer .drawer-actions { display: flex; gap: 12px; margin-top: 22px; }
.nav-drawer .drawer-actions .btn { flex: 1; }

/* ---------- Hero（全屏实景沉浸） ---------- */
.hero {
  position: relative;
  min-height: min(100svh, 960px);
  display: flex; align-items: center;
  background: var(--ink-900);
  overflow: hidden;
  padding: calc(var(--nav-h) + 40px) 0 170px;
  isolation: isolate;
}
.hero-media { position: absolute; inset: 0; z-index: -3; }
.hero-media img {
  width: 100%; height: 100%; object-fit: cover;
  transform: scale(1.06);
  animation: heroZoom 9s var(--ease) forwards;
  will-change: transform;
}
@keyframes heroZoom { to { transform: scale(1.0); } }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -2;
  background:
    linear-gradient(100deg, rgba(4, 9, 18, 0.94) 0%, rgba(5, 12, 24, 0.78) 42%, rgba(6, 14, 28, 0.34) 78%, rgba(6, 14, 28, 0.55) 100%),
    linear-gradient(180deg, rgba(4, 9, 18, 0.55) 0%, transparent 26%, transparent 62%, rgba(4, 8, 16, 0.96) 100%);
}
/* 网格 + 青色光晕 */
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background-image:
    radial-gradient(720px 500px at 82% 10%, rgba(56, 182, 255, 0.17), transparent 65%),
    linear-gradient(rgba(255, 255, 255, 0.033) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.033) 1px, transparent 1px);
  background-size: auto, 64px 64px, 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 78%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, #000 78%, transparent 100%);
  pointer-events: none;
}
.hero .container { position: relative; }
.hero-inner { max-width: 800px; }

.hero-tag {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 9px 20px;
  border: 1px solid rgba(82, 220, 255, 0.34);
  border-radius: 22px;
  background: rgba(30, 127, 224, 0.13);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: var(--cyan-300);
  font-size: 13.5px; font-weight: 600; letter-spacing: 0.14em;
  margin-bottom: 30px;
}
.hero-tag::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan-300);
  box-shadow: 0 0 10px var(--cyan-300);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.hero h1 {
  color: var(--white);
  font-size: clamp(46px, 6.6vw, 82px);
  font-weight: 800; letter-spacing: 0.06em; line-height: 1.12;
  margin-bottom: 24px;
  text-shadow: 0 6px 40px rgba(3, 10, 20, 0.5);
}
.hero-sub {
  color: var(--w-70);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.95; margin-bottom: 44px; max-width: 680px;
}
.hero-sub strong { color: var(--white); font-weight: 600; }
.hero-sub .hl { color: var(--cyan-300); font-weight: 600; }
.hero-actions { display: flex; gap: 18px; flex-wrap: wrap; }

/* Hero 底部数据带 */
.hero-stats {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 3;
  border-top: 1px solid rgba(255, 255, 255, 0.10);
  background: linear-gradient(180deg, rgba(6, 13, 26, 0.35), rgba(5, 10, 20, 0.72));
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}
.hero-stats .container {
  display: grid; grid-template-columns: repeat(6, 1fr);
  padding-top: 26px; padding-bottom: 26px;
}
.hstat { text-align: center; position: relative; padding: 2px 10px; }
.hstat + .hstat::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 1px; height: 40px;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.16), transparent);
}
.hstat .num {
  font-size: clamp(24px, 2.6vw, 36px);
  font-weight: 800; line-height: 1.25; letter-spacing: 0.01em;
  color: var(--white);
  font-variant-numeric: tabular-nums;
}
.hstat .num em { font-style: normal; font-size: 0.62em; font-weight: 700; margin-left: 2px; color: var(--cyan-300); }
.hstat .lbl { color: var(--w-50); font-size: 13px; margin-top: 3px; letter-spacing: 0.05em; }

/* ---------- 通用板块 ---------- */
.section { padding: 104px 0; position: relative; }
.section-flush { padding-top: 0; }

.sec-head { max-width: 720px; margin: 0 auto 60px; text-align: center; }
.sec-head .eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  color: var(--blue-600);
  font-size: 13px; font-weight: 700; letter-spacing: 0.34em; text-transform: uppercase;
  margin-bottom: 16px;
}
.sec-head .eyebrow::before, .sec-head .eyebrow::after {
  content: ""; width: 26px; height: 1.5px;
  background: var(--grad-brand); border-radius: 1px;
}
.sec-head h2 {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800; color: var(--text);
  letter-spacing: 0.05em; line-height: 1.28;
}
.sec-head p { color: var(--muted); font-size: 16.5px; margin-top: 16px; }

/* 深空区 */
.sec-dark { background: var(--ink-900); position: relative; overflow: hidden; }
.sec-dark::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    radial-gradient(900px 540px at 12% 0%, rgba(30, 127, 224, 0.13), transparent 62%),
    radial-gradient(760px 500px at 92% 100%, rgba(82, 220, 255, 0.07), transparent 60%),
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: auto, auto, 64px 64px, 64px 64px;
  pointer-events: none;
}
.sec-dark > .container { position: relative; z-index: 2; }
.sec-dark .sec-head h2 { color: var(--white); }
.sec-dark .sec-head p { color: var(--w-50); }
.sec-dark .sec-head .eyebrow { color: var(--cyan-300); }

/* 左对齐节标题 */
.block-title {
  display: flex; align-items: center; gap: 14px;
  font-size: 22px; font-weight: 800; color: var(--text);
  margin-bottom: 22px; letter-spacing: 0.03em;
}
.block-title::before {
  content: ""; width: 5px; height: 22px; border-radius: 3px;
  background: var(--grad-brand);
  box-shadow: 0 0 12px rgba(56, 182, 255, 0.5);
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(12, 28, 48, 0.045);
  transition: transform 0.32s var(--ease), box-shadow 0.32s var(--ease), border-color 0.32s var(--ease);
}
.card-hover:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); border-color: rgba(56, 182, 255, 0.35); }

/* 深区玻璃卡 */
.glass {
  background: var(--w-04);
  border: 1px solid var(--w-08);
  border-radius: var(--radius);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: transform 0.32s var(--ease), background 0.32s var(--ease), border-color 0.32s var(--ease), box-shadow 0.32s var(--ease);
}
.glass:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(82, 220, 255, 0.36);
  transform: translateY(-4px);
  box-shadow: 0 18px 48px rgba(2, 8, 18, 0.5), inset 0 0 32px rgba(56, 182, 255, 0.05);
}

/* ---------- 业务板块（六宫格） ---------- */
.grid-biz { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.biz-card { padding: 38px 34px; position: relative; overflow: hidden; display: block; }
.biz-card::after {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px;
  background: var(--grad-brand);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.biz-card:hover::after { transform: scaleX(1); }
.biz-icon {
  width: 58px; height: 58px; border-radius: 14px;
  background: var(--grad-brand-soft);
  border: 1px solid rgba(56, 182, 255, 0.28);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 24px;
  transition: box-shadow 0.3s var(--ease);
}
.biz-card:hover .biz-icon { box-shadow: var(--glow-blue); }
.biz-icon svg { width: 28px; height: 28px; color: var(--blue-400); }
.biz-card h3 { color: var(--white); font-size: 20.5px; font-weight: 700; letter-spacing: 0.03em; margin-bottom: 10px; }
.biz-card .en { color: var(--w-50); font-size: 11.5px; letter-spacing: 0.2em; text-transform: uppercase; display: block; margin-bottom: 14px; }
.biz-card p { color: var(--w-70); font-size: 14.5px; line-height: 1.85; }
.biz-card .go {
  display: inline-flex; align-items: center; gap: 7px;
  margin-top: 20px;
  color: var(--cyan-300); font-size: 14px; font-weight: 700;
}
.biz-card .go svg { width: 15px; height: 15px; transition: transform 0.26s var(--ease); }
.biz-card:hover .go svg { transform: translateX(4px); }

/* ---------- 1+3+6+N 生态 ---------- */
.eco-wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.eco-card { padding: 34px 28px; text-align: center; }
.eco-card .big {
  font-size: 46px; font-weight: 800; line-height: 1.15;
  font-variant-numeric: tabular-nums;
}
.eco-card h3 { color: var(--white); font-size: 17px; font-weight: 700; margin: 8px 0 12px; letter-spacing: 0.06em; }
.eco-card p { color: var(--w-50); font-size: 13.5px; line-height: 1.8; }
.eco-card p strong { color: var(--w-70); font-weight: 600; }

/* ---------- 数字墙 ---------- */
.grid-nums { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.num-tile { padding: 26px 18px; text-align: center; }
.num-tile .n { font-size: clamp(26px, 2.8vw, 38px); font-weight: 800; font-variant-numeric: tabular-nums; }
.num-tile .n em { font-style: normal; font-size: 0.6em; margin-left: 1px; }
.num-tile .t { margin-top: 6px; font-size: 13.5px; }
/* 深浅两种上下文 */
.sec-dark .num-tile .t { color: var(--w-50); }
.section:not(.sec-dark) .num-tile .t { color: var(--muted); }

/* ---------- 产品卡 ---------- */
.grid-products { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.product-card { overflow: hidden; display: flex; flex-direction: column; }
.product-card .pic { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: linear-gradient(150deg, #E8EFF7, #D5E2F0); }
.product-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.product-card:hover .pic img { transform: scale(1.055); }
.product-card .pic .chip {
  position: absolute; left: 12px; top: 12px;
  padding: 4px 12px; border-radius: 11px;
  background: rgba(5, 12, 24, 0.62);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(82, 220, 255, 0.3);
  color: #BFE9FF; font-size: 12px; font-weight: 600;
}
.product-card .body { padding: 22px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.product-card h3 { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.product-card p {
  color: var(--muted); font-size: 14px; line-height: 1.75; margin-bottom: 16px; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.link-arrow { display: inline-flex; align-items: center; gap: 7px; color: var(--blue-600); font-size: 14px; font-weight: 700; }
.link-arrow svg { width: 15px; height: 15px; transition: transform 0.26s var(--ease); }
.link-arrow:hover svg, .product-card:hover .link-arrow svg { transform: translateX(4px); }

/* ---------- 工厂网络 ---------- */
.factory-hero {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  aspect-ratio: 21 / 9;
  box-shadow: var(--shadow-card-hover);
}
.factory-hero img { width: 100%; height: 100%; object-fit: cover; }
.factory-hero .cap {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 40px 36px 28px;
  background: linear-gradient(180deg, transparent, rgba(4, 9, 18, 0.88));
  color: var(--white);
}
.factory-hero .cap h3 { font-size: 24px; font-weight: 800; letter-spacing: 0.04em; }
.factory-hero .cap p { color: var(--w-70); font-size: 14.5px; margin-top: 6px; max-width: 720px; }
.grid-factories { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 20px; }
.factory-card { position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16 / 9; display: block; box-shadow: var(--shadow-card); }
.factory-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.factory-card:hover img { transform: scale(1.06); }
.factory-card .mask { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6, 13, 26, 0.0) 40%, rgba(5, 11, 22, 0.82) 100%); }
.factory-card .info { position: absolute; left: 0; right: 0; bottom: 0; padding: 16px 18px; z-index: 2; display: flex; align-items: baseline; gap: 10px; }
.factory-card .info .idx { color: var(--cyan-300); font-size: 12.5px; font-weight: 800; letter-spacing: 0.1em; }
.factory-card .info h3 { color: var(--white); font-size: 16.5px; font-weight: 700; letter-spacing: 0.04em; }
.factory-card .info p { color: var(--w-50); font-size: 12px; margin-left: auto; text-align: right; }

/* ---------- 模式/优势条 ---------- */
.grid-modes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.mode-card { padding: 30px 28px; }
.mode-card .no {
  font-size: 15px; font-weight: 800; letter-spacing: 0.12em;
  margin-bottom: 14px; display: inline-block;
}
.mode-card h3 { font-size: 18.5px; font-weight: 700; margin-bottom: 8px; letter-spacing: 0.02em; }
.mode-card p { font-size: 14px; line-height: 1.8; }
.sec-dark .mode-card h3 { color: var(--white); }
.sec-dark .mode-card p { color: var(--w-70); }
.sec-dark .mode-card .no { color: var(--cyan-300); }
.section:not(.sec-dark) .mode-card h3 { color: var(--text); }
.section:not(.sec-dark) .mode-card p { color: var(--muted); }
.section:not(.sec-dark) .mode-card .no { color: var(--blue-600); }

/* ---------- 案例 ---------- */
.grid-cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 4 / 3; display: block;
  box-shadow: var(--shadow-card);
  transition: transform 0.32s var(--ease), box-shadow 0.32s var(--ease);
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.case-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.55s var(--ease); }
.case-card:hover img { transform: scale(1.06); }
.case-card .mask { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6, 13, 26, 0) 30%, rgba(4, 9, 18, 0.9) 100%); }
.case-card .info { position: absolute; left: 0; right: 0; bottom: 0; padding: 22px 24px; z-index: 2; }
.case-card .tag {
  display: inline-block; padding: 4px 13px; border-radius: 12px;
  background: rgba(30, 127, 224, 0.3);
  border: 1px solid rgba(82, 220, 255, 0.4);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  color: #CFF0FF; font-size: 12.5px; font-weight: 600;
  margin-bottom: 10px;
}
.case-card h3 { color: var(--white); font-size: 17.5px; font-weight: 700; line-height: 1.5; }

/* ---------- 合作伙伴墙 ---------- */
.partner-wall { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.partner-chip {
  padding: 18px 10px; text-align: center;
  border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 600; letter-spacing: 0.05em;
  color: var(--w-70);
  background: var(--w-04);
  border: 1px solid var(--w-08);
  transition: all 0.28s var(--ease);
}
.partner-chip:hover { color: var(--white); border-color: rgba(82, 220, 255, 0.4); background: rgba(56, 182, 255, 0.09); transform: translateY(-2px); }

/* ---------- CTA ---------- */
.cta {
  position: relative; overflow: hidden; text-align: center;
  background: var(--ink-900);
  padding: 100px 0;
}
.cta .bg { position: absolute; inset: 0; opacity: 0.16; }
.cta .bg img { width: 100%; height: 100%; object-fit: cover; }
.cta::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(700px 420px at 50% 0%, rgba(30, 127, 224, 0.22), transparent 65%),
    linear-gradient(180deg, rgba(6, 13, 26, 0.6), rgba(4, 9, 18, 0.92));
}
.cta .container { position: relative; z-index: 2; }
.cta h2 { color: var(--white); font-size: clamp(30px, 4.2vw, 46px); font-weight: 800; letter-spacing: 0.04em; margin-bottom: 18px; }
.cta p { color: var(--w-70); font-size: 16.5px; max-width: 620px; margin: 0 auto 42px; }
.cta p strong { color: var(--cyan-300); font-weight: 600; }
.cta-actions { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; }

/* ---------- 内页头 ---------- */
.page-hero {
  position: relative;
  background: var(--ink-900);
  padding: calc(var(--nav-h) + 84px) 0 76px;
  overflow: hidden; isolation: isolate;
}
.page-hero .ph-media { position: absolute; inset: 0; z-index: -2; }
.page-hero .ph-media img { width: 100%; height: 100%; object-fit: cover; opacity: 0.30; }
.page-hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(720px 420px at 86% 0%, rgba(56, 182, 255, 0.15), transparent 62%),
    linear-gradient(180deg, rgba(4, 9, 18, 0.6) 0%, rgba(5, 11, 22, 0.86) 70%, var(--ink-900) 100%),
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: auto, auto, 64px 64px, 64px 64px;
}
.breadcrumb { display: flex; align-items: center; gap: 9px; color: var(--w-50); font-size: 13.5px; margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--cyan-300); }
.breadcrumb .cur { color: var(--cyan-300); }
.page-hero h1, .page-hero .page-hero-h1 {
  color: var(--white);
  font-size: clamp(32px, 4.6vw, 50px);
  font-weight: 800; letter-spacing: 0.06em; line-height: 1.25;
  margin-bottom: 14px;
}
.page-hero .desc { color: var(--w-70); font-size: 16.5px; max-width: 680px; }

/* ---------- 页脚 ---------- */
.footer { background: var(--ink-950); color: var(--w-50); padding: 76px 0 0; position: relative; overflow: hidden; }
.footer::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--grad-brand); opacity: 0.9; }
.footer::after {
  content: ""; position: absolute; right: -160px; top: -160px;
  width: 480px; height: 480px;
  background: radial-gradient(circle, rgba(30, 127, 224, 0.1), transparent 62%);
  pointer-events: none;
}
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 48px; padding-bottom: 52px; position: relative; z-index: 2; }
.footer h4 { color: var(--white); font-size: 16px; font-weight: 700; margin-bottom: 22px; letter-spacing: 0.06em; }
.footer-brand p { font-size: 14px; line-height: 1.95; margin: 18px 0 20px; color: var(--w-50); }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: var(--w-50); font-size: 14px; transition: color 0.2s, padding-left 0.2s; }
.footer-links a:hover { color: var(--cyan-300); padding-left: 4px; }
.footer-contact li { display: flex; gap: 11px; font-size: 14px; color: var(--w-50); margin-bottom: 15px; line-height: 1.7; }
.footer-contact svg { width: 16px; height: 16px; flex: none; margin-top: 4px; color: var(--blue-400); }
.footer-contact .tel-big { font-size: 23px; font-weight: 800; letter-spacing: 0.02em; line-height: 1.3; }
.footer-qr {
  width: 96px; height: 96px;
  border-radius: 10px;
  background: #fff;
  padding: 5px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}
.contact-qr {
  width: 128px; height: 128px;
  border-radius: 10px;
  border: 1px solid var(--line);
  padding: 6px;
  background: #fff;
  margin-top: 8px;
}
.footer-bottom {
  border-top: 1px solid var(--w-08);
  padding: 22px 0;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap;
  font-size: 13px; color: rgba(255, 255, 255, 0.36);
  position: relative; z-index: 2;
}
.footer-bottom a { color: rgba(255, 255, 255, 0.45); text-decoration: none; }
.footer-bottom a:hover { color: var(--cyan-300); }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-field { display: flex; flex-direction: column; gap: 8px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-size: 14px; font-weight: 600; color: var(--text); }
.form-field label .req { color: var(--blue-600); margin-left: 3px; }
.input, .select, .textarea {
  width: 100%;
  border: 1px solid rgba(12, 28, 48, 0.13);
  border-radius: var(--radius-sm);
  background: var(--white);
  padding: 13px 16px;
  font-size: 15px; color: var(--text);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-appearance: none; appearance: none;
}
.select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235C6C82' stroke-width='2.4' 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 16px center;
  padding-right: 42px;
}
.textarea { min-height: 132px; resize: vertical; line-height: 1.7; }
.input::placeholder, .textarea::placeholder { color: var(--muted); opacity: 0.72; }
.input:focus, .select:focus, .textarea:focus {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3.5px rgba(56, 182, 255, 0.16);
}
.input.error, .select.error, .textarea.error {
  border-color: var(--blue-600);
  box-shadow: 0 0 0 3.5px rgba(30, 127, 224, 0.22);
}
.field-error { font-size: 12.5px; color: var(--blue-600); display: none; }
.field-error.show { display: block; }

.upload-box {
  border: 1.5px dashed rgba(12, 28, 48, 0.2);
  border-radius: var(--radius-sm);
  background: var(--paper);
  padding: 28px 20px; text-align: center; cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.upload-box:hover { border-color: var(--blue-500); background: var(--white); }
.upload-box svg { width: 30px; height: 30px; color: var(--blue-500); margin: 0 auto 10px; }
.upload-box .t1 { font-size: 14.5px; font-weight: 600; color: var(--text); }
.upload-box .t2 { font-size: 12.5px; color: var(--muted); margin-top: 4px; }
.upload-list { margin-top: 12px; display: flex; flex-direction: column; gap: 8px; }
.upload-item {
  display: flex; align-items: center; gap: 10px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 9px 14px; font-size: 13.5px; color: var(--text);
}
.upload-item svg { width: 15px; height: 15px; color: var(--blue-500); flex: none; }
.upload-item .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.upload-item .size { color: var(--muted); font-size: 12.5px; flex: none; }
.upload-item .rm { color: var(--muted); font-size: 17px; line-height: 1; padding: 2px 4px; flex: none; }
.upload-item .rm:hover { color: var(--blue-600); }

.form-result { display: none; margin-top: 20px; padding: 16px 20px; border-radius: var(--radius-sm); font-size: 14.5px; line-height: 1.7; }
.form-result.ok { display: block; background: rgba(56, 182, 255, 0.1); border: 1px solid rgba(56, 182, 255, 0.32); color: var(--text); }
.form-result.err { display: block; background: rgba(12, 28, 48, 0.04); border: 1px solid rgba(12, 28, 48, 0.12); color: var(--text); }

/* ---------- 关于页 ---------- */
.about-grid { display: grid; grid-template-columns: 1.12fr 1fr; gap: 60px; align-items: center; }
.about-text p { color: var(--text); font-size: 15.5px; line-height: 2.05; margin-bottom: 16px; text-align: justify; }
.about-text p strong { color: var(--blue-600); }
.about-pic { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card-hover); }
.about-pic img { width: 100%; height: 100%; object-fit: cover; }
.about-pic .badge {
  position: absolute; left: 20px; bottom: 20px;
  padding: 12px 20px; border-radius: var(--radius-sm);
  background: rgba(5, 11, 22, 0.78);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(82, 220, 255, 0.3);
  color: var(--white); font-size: 13.5px; font-weight: 600;
}
.about-pic .badge strong { color: var(--cyan-300); font-size: 17px; }

/* 理念卡 */
.grid-philosophy { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.phi-card { padding: 40px 32px; text-align: center; }
.phi-card .zh { font-size: 24px; font-weight: 800; color: var(--white); letter-spacing: 0.14em; margin-bottom: 8px; }
.phi-card .en { color: var(--cyan-300); font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase; margin-bottom: 16px; }
.phi-card p { color: var(--w-70); font-size: 14px; line-height: 1.85; }

/* 时间线 */
.timeline { position: relative; max-width: 860px; margin: 0 auto; }
.timeline::before {
  content: ""; position: absolute; left: 13px; top: 8px; bottom: 8px; width: 2px;
  background: linear-gradient(180deg, var(--blue-400), rgba(30, 127, 224, 0.1));
}
.tl-item { position: relative; padding: 0 0 40px 52px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: 5px; top: 7px;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--grad-brand);
  box-shadow: 0 0 0 5px rgba(56, 182, 255, 0.14), 0 0 18px rgba(56, 182, 255, 0.55);
}
.tl-item .year { font-size: 20px; font-weight: 800; letter-spacing: 0.05em; }
.tl-item h3 { font-size: 17.5px; font-weight: 700; color: var(--text); margin: 8px 0 8px; }
.tl-item p { color: var(--muted); font-size: 14.5px; line-height: 1.85; max-width: 640px; }
.sec-dark .tl-item h3 { color: var(--white); }
.sec-dark .tl-item p { color: var(--w-50); }

/* ---------- 产品中心 ---------- */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 48px; }
.filter-btn {
  padding: 10px 24px; border-radius: 21px;
  border: 1px solid rgba(12, 28, 48, 0.12);
  background: var(--white);
  color: var(--muted); font-size: 14px; font-weight: 600;
  transition: all 0.26s var(--ease);
}
.filter-btn:hover { border-color: var(--blue-500); color: var(--blue-600); }
.filter-btn.active {
  background: var(--grad-brand);
  border-color: transparent; color: #fff;
  box-shadow: 0 6px 18px rgba(30, 127, 224, 0.38);
}

/* 产品详情 */
.pd-layout { display: grid; grid-template-columns: 1.05fr 1fr; gap: 52px; align-items: start; }
.pd-pic { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card); }
.pd-pic img { width: 100%; object-fit: cover; }
.pd-info .cat {
  display: inline-block; padding: 5px 15px; border-radius: 14px;
  background: var(--grad-brand-soft);
  border: 1px solid rgba(56, 182, 255, 0.32);
  color: var(--blue-600); font-size: 13px; font-weight: 700;
  margin-bottom: 16px;
}
.pd-info h1 { font-size: clamp(27px, 3.2vw, 36px); font-weight: 800; color: var(--text); margin-bottom: 14px; letter-spacing: 0.02em; }
.pd-info .summary { color: var(--muted); font-size: 15.5px; line-height: 1.95; margin-bottom: 24px; }
.pd-feats { margin-bottom: 30px; }
.pd-feats li { display: flex; gap: 11px; font-size: 14.5px; color: var(--text); padding: 7px 0; }
.pd-feats svg { width: 18px; height: 18px; color: var(--blue-500); flex: none; margin-top: 4px; }
.pd-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.spec-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.spec-table th, .spec-table td { padding: 13px 18px; text-align: left; border-bottom: 1px solid var(--line); }
.spec-table th { width: 190px; color: var(--muted); font-weight: 600; background: var(--paper); }
.spec-table td { color: var(--text); }
.spec-note { font-size: 13px; color: var(--muted); margin-top: 14px; }

/* 产品图库 */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.gallery figure { border-radius: var(--radius-sm); overflow: hidden; position: relative; box-shadow: var(--shadow-card); aspect-ratio: 4 / 3; margin: 0; }
.gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.45s var(--ease); }
.gallery figure:hover img { transform: scale(1.05); }
.gallery figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 22px 14px 10px;
  background: linear-gradient(180deg, transparent, rgba(4, 9, 18, 0.82));
  color: var(--white); font-size: 13px; font-weight: 600; text-align: center;
}

/* ---------- 资质证书墙 ---------- */
.cert-wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.cert-item {
  background: var(--white);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(12, 28, 48, 0.05);
  padding: 14px 14px 12px;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.cert-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.cert-item .pic {
  aspect-ratio: 3 / 4;
  display: flex; align-items: center; justify-content: center;
  background: var(--paper);
  border-radius: 6px;
  overflow: hidden;
}
.cert-item .pic img { max-width: 100%; max-height: 100%; object-fit: contain; }
.cert-item p { text-align: center; font-size: 13.5px; font-weight: 600; color: var(--text); margin-top: 10px; line-height: 1.5; }

/* 检测报告清单 */
.report-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.report-group { padding: 24px 26px; }
.report-group h3 { display: flex; align-items: center; gap: 10px; font-size: 16px; font-weight: 800; color: var(--text); margin-bottom: 12px; }
.report-group h3 svg { width: 18px; height: 18px; color: var(--blue-500); }
.report-group li {
  font-size: 13.5px; color: var(--muted); line-height: 1.7;
  padding: 5px 0 5px 16px; position: relative;
}
.report-group li::before {
  content: ""; position: absolute; left: 0; top: 13px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--grad-brand);
}

/* ---------- 新闻 ---------- */
.grid-news { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { overflow: hidden; display: flex; flex-direction: column; }
.news-card .pic { aspect-ratio: 16 / 9; overflow: hidden; background: linear-gradient(150deg, #E8EFF7, #D5E2F0); position: relative; }
.news-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.news-card:hover .pic img { transform: scale(1.05); }
.news-card .body { padding: 22px 24px; flex: 1; display: flex; flex-direction: column; }
.news-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 11px; flex-wrap: wrap; }
.news-meta .cat { padding: 3px 11px; border-radius: 10px; background: var(--grad-brand-soft); border: 1px solid rgba(56, 182, 255, 0.24); color: var(--blue-600); font-size: 12px; font-weight: 700; }
.news-meta .date { color: var(--muted); font-size: 13px; }
.news-card h3 {
  font-size: 16.5px; font-weight: 700; color: var(--text); line-height: 1.55; margin-bottom: 10px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-card p {
  color: var(--muted); font-size: 14px; line-height: 1.78; flex: 1; margin-bottom: 14px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

.article { max-width: 860px; margin: 0 auto; background: var(--white); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); padding: 54px 58px; }
.article h1 { font-size: clamp(24px, 3vw, 33px); font-weight: 800; color: var(--text); line-height: 1.5; margin-bottom: 16px; }
.article .meta { display: flex; gap: 14px; align-items: center; color: var(--muted); font-size: 13.5px; padding-bottom: 22px; border-bottom: 1px solid var(--line); margin-bottom: 28px; flex-wrap: wrap; }
.article .content p { font-size: 15.5px; line-height: 2.1; color: var(--text); margin-bottom: 18px; text-align: justify; }
.article .content strong { color: var(--blue-600); }
.article .src { margin-top: 26px; padding-top: 18px; border-top: 1px dashed var(--line); color: var(--muted); font-size: 13px; }

/* ---------- 联系页 ---------- */
.contact-layout { display: grid; grid-template-columns: 1fr 1.25fr; gap: 40px; align-items: start; }
.contact-info-card { padding: 38px; }
.contact-info-card .row { display: flex; gap: 15px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.contact-info-card .row:last-child { border-bottom: none; }
.contact-info-card .row svg { width: 20px; height: 20px; color: var(--blue-500); flex: none; margin-top: 3px; }
.contact-info-card .row .k { font-size: 13px; color: var(--muted); margin-bottom: 3px; }
.contact-info-card .row .v { font-size: 15px; color: var(--text); font-weight: 600; line-height: 1.65; }
.contact-info-card .row .v.tel { font-size: 22px; font-weight: 800; }
.contact-info-card .row .v.tel a { background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.grid-branches { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.branch-card { overflow: hidden; display: flex; flex-direction: column; }
.branch-card .pic { aspect-ratio: 16 / 8.4; overflow: hidden; position: relative; }
.branch-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.branch-card:hover .pic img { transform: scale(1.05); }
.branch-card .pic .prov {
  position: absolute; left: 14px; bottom: 12px;
  padding: 5px 14px; border-radius: 13px;
  background: rgba(5, 12, 24, 0.66);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(82, 220, 255, 0.36);
  color: #CFF0FF; font-size: 13px; font-weight: 700; letter-spacing: 0.06em;
}
.branch-card .body { padding: 20px 22px 24px; flex: 1; }
.branch-card h3 { font-size: 16.5px; font-weight: 700; color: var(--text); margin-bottom: 9px; }
.branch-card p { font-size: 13.5px; color: var(--muted); line-height: 1.8; }
.branch-card .tel { color: var(--blue-600); font-weight: 700; margin-top: 10px; font-size: 15px; display: inline-block; }

/* ---------- 询价页 ---------- */
.quote-layout { display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: start; }
.quote-form-card { padding: 46px 48px; }
.quote-side .card, .quote-side .glass-side { margin-bottom: 22px; }
.quote-side .card { padding: 30px 28px; }
.quote-side h3 { display: flex; align-items: center; gap: 11px; font-size: 17.5px; font-weight: 800; color: var(--text); margin-bottom: 18px; }
.quote-side h3::before { content: ""; width: 4px; height: 18px; border-radius: 2px; background: var(--grad-brand); }
.quote-side .steps li { display: flex; gap: 14px; padding: 10px 0; }
.quote-side .steps .n {
  width: 27px; height: 27px; flex: none; border-radius: 50%;
  background: var(--grad-brand-soft);
  border: 1px solid rgba(56, 182, 255, 0.34);
  color: var(--blue-600);
  font-size: 13px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.quote-side .steps .t { font-size: 14px; color: var(--text); line-height: 1.7; }
.quote-side .steps .t strong { display: block; color: var(--text); font-size: 14.5px; }
.quote-side .steps .t span { color: var(--muted); }
.tel-card {
  background: var(--ink-900);
  border-radius: var(--radius);
  border: 1px solid rgba(82, 220, 255, 0.22);
  padding: 30px 28px;
  position: relative; overflow: hidden;
}
.tel-card::before { content: ""; position: absolute; right: -60px; top: -60px; width: 200px; height: 200px; background: radial-gradient(circle, rgba(56, 182, 255, 0.22), transparent 65%); }
.tel-card .k { color: var(--w-50); font-size: 13.5px; margin-bottom: 6px; position: relative; }
.tel-card .v { font-size: 26px; font-weight: 800; letter-spacing: 0.02em; display: block; position: relative; }
.tel-card p { color: var(--w-50); font-size: 13px; margin-top: 10px; line-height: 1.7; position: relative; }

/* ---------- 浮动询价（移动端） ---------- */
.float-quote { display: none; position: fixed; right: 16px; bottom: 24px; z-index: 900; }
.float-quote .btn { box-shadow: 0 10px 30px rgba(30, 127, 224, 0.55); }

/* ---------- 动效 ---------- */
html.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
html.js .reveal.in { opacity: 1; transform: none; }
html.js .reveal-d1.in { transition-delay: 0.08s; }
html.js .reveal-d2.in { transition-delay: 0.16s; }
@media (prefers-reduced-motion: reduce) {
  html.js .reveal { opacity: 1; transform: none; transition: none; }
  .hero-media img { animation: none; transform: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 工具 ---------- */
.mt-20 { margin-top: 20px; } .mt-40 { margin-top: 40px; } .mt-56 { margin-top: 56px; }
.center { text-align: center; }
.section-cta-btn { margin-top: 48px; text-align: center; }
.note { color: var(--muted); font-size: 13.5px; }
.sec-dark .note { color: var(--w-50); }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1120px) {
  .nav-tel { display: none; }
  .grid-products { grid-template-columns: repeat(2, 1fr); }
  .grid-nums { grid-template-columns: repeat(3, 1fr); }
  .eco-wrap { grid-template-columns: repeat(2, 1fr); }
  .partner-wall { grid-template-columns: repeat(4, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats .container { grid-template-columns: repeat(3, 1fr); row-gap: 20px; }
  .hstat:nth-child(4)::before { display: none; }
}

@media (max-width: 940px) {
  :root { --nav-h: 64px; }
  .nav-menu, .navbar .btn-quote { display: none; }
  .nav-toggle { display: flex; }
  .nav-drawer { display: block; }
  .nav-right { margin-left: auto; }

  .hero { min-height: 0; padding: calc(var(--nav-h) + 72px) 0 200px; }
  .section { padding: 76px 0; }

  .grid-biz, .grid-modes, .grid-cases, .grid-news, .grid-factories,
  .grid-philosophy, .grid-branches { grid-template-columns: 1fr 1fr; }
  .cert-wall { grid-template-columns: repeat(3, 1fr); }
  .report-list { grid-template-columns: 1fr; }
  .grid-cases > :last-child { grid-column: auto; }
  .about-grid, .pd-layout, .contact-layout, .quote-layout { grid-template-columns: 1fr; }
  .about-grid { gap: 36px; }
  .factory-hero { aspect-ratio: 16 / 9; }
  .article { padding: 38px 30px; }
  .quote-form-card { padding: 36px 28px; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  .container { padding: 0 18px; }
  .section { padding: 60px 0; }
  .sec-head { margin-bottom: 40px; }

  .hero { padding: calc(var(--nav-h) + 56px) 0 240px; }
  .hero-actions .btn { flex: 1; min-width: 160px; }
  .hero-stats .container { grid-template-columns: repeat(3, 1fr); padding-top: 18px; padding-bottom: 18px; row-gap: 14px; }
  .hstat .lbl { font-size: 11px; }

  .grid-biz, .grid-modes, .grid-cases, .grid-news, .grid-factories,
  .grid-philosophy, .grid-branches, .form-grid, .gallery { grid-template-columns: 1fr; }
  .cert-wall { grid-template-columns: repeat(2, 1fr); }
  .grid-products { grid-template-columns: 1fr; }
  .grid-nums { grid-template-columns: repeat(2, 1fr); }
  .eco-wrap { grid-template-columns: 1fr; }
  .partner-wall { grid-template-columns: repeat(3, 1fr); }
  .partner-chip { font-size: 13px; padding: 14px 6px; }

  .cta-actions .btn { width: 100%; max-width: 360px; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer { padding-top: 54px; }
  .footer-bottom { justify-content: center; text-align: center; }
  .float-quote { display: block; }
  .article h1 { font-size: 23px; }
}