/* ==========================================================================
   四川安澜长江科技有限公司 官方网站 · 全站样式
   设计规范：主色 #0B5FFF → #062A5C 渐变；点缀 #22D3EE；
             浅底 #F6FAFF；深色区块 #04132B；玻璃拟态 + 大圆角 + 水波纹/数据流
   纯 CSS，无外部框架依赖
   ========================================================================== */

:root {
  --c-blue: #0B5FFF;
  --c-deep: #062A5C;
  --c-cyan: #22D3EE;
  --c-bg: #F6FAFF;
  --c-dark: #04132B;
  --c-ink: #0A1B33;
  --c-body: #3D4C63;
  --c-line: rgba(11, 95, 255, 0.10);
  --grad-brand: linear-gradient(135deg, #0B5FFF 0%, #062A5C 100%);
  --grad-cyan: linear-gradient(135deg, #22D3EE 0%, #0B5FFF 100%);
  --shadow-soft: 0 8px 30px rgba(6, 42, 92, 0.08);
  --shadow-lift: 0 18px 48px rgba(6, 42, 92, 0.16);
  --radius-lg: 24px;
  --radius-md: 18px;
  --font-sans: "Inter", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  --header-h: 74px;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--c-body);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--c-blue); text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--c-cyan); }
ul, ol { list-style: none; }
strong { color: var(--c-ink); }

h1, h2, h3, h4 {
  color: var(--c-ink);
  line-height: 1.28;
  font-weight: 800;
  letter-spacing: 0.01em;
}

::selection { background: rgba(11, 95, 255, 0.18); }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 通用小元素 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-blue);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--grad-cyan);
  border-radius: 2px;
}
.section-dark .eyebrow, .hero .eyebrow, .page-hero .eyebrow, .cta-banner .eyebrow { color: var(--c-cyan); }

.section { padding: 96px 0; position: relative; }
.section-tight { padding: 72px 0; }
.section-dark {
  background: var(--c-dark);
  color: rgba(234, 243, 255, 0.75);
}
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark h4 { color: #EAF3FF; }

.section-head { max-width: 760px; margin-bottom: 52px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .eyebrow { justify-content: center; }
.section-head h2 { font-size: clamp(26px, 3.6vw, 38px); margin-bottom: 16px; }
.section-head p { font-size: 17px; }

.lead { font-size: 18px; color: var(--c-ink); font-weight: 500; }
.section-dark .lead { color: #EAF3FF; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 30px;
  border-radius: 999px;
  font-size: 15.5px;
  font-weight: 700;
  font-family: var(--font-sans);
  letter-spacing: 0.02em;
  cursor: pointer;
  border: none;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease, border-color .25s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--grad-brand);
  color: #fff;
  box-shadow: 0 10px 28px rgba(11, 95, 255, 0.35);
}
.btn-primary:hover { color: #fff; box-shadow: 0 14px 36px rgba(11, 95, 255, 0.48); }

.btn-accent {
  background: var(--grad-cyan);
  color: #032042;
  box-shadow: 0 10px 28px rgba(34, 211, 238, 0.35);
}
.btn-accent:hover { color: #032042; box-shadow: 0 14px 36px rgba(34, 211, 238, 0.5); }

.btn-light { background: #fff; color: var(--c-deep); box-shadow: 0 10px 26px rgba(2, 16, 38, 0.25); }
.btn-light:hover { color: var(--c-blue); }

.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  color: #EAF3FF;
  border: 1px solid rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.btn-ghost:hover { color: #fff; border-color: var(--c-cyan); background: rgba(34, 211, 238, 0.12); }

.btn-outline {
  background: transparent;
  color: var(--c-blue);
  border: 1.5px solid rgba(11, 95, 255, 0.4);
}
.btn-outline:hover { border-color: var(--c-blue); background: rgba(11, 95, 255, 0.06); }

.btn-sm { padding: 10px 22px; font-size: 14px; }
.btn .arrow { transition: transform .25s ease; }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- 头部导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  transition: background .35s ease, box-shadow .35s ease, backdrop-filter .35s ease;
}
.site-header.scrolled {
  background: rgba(4, 19, 43, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 6px 30px rgba(2, 12, 28, 0.35);
}
.nav-wrap {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand { display: inline-flex; align-items: center; gap: 12px; color: #fff; }
.brand:hover { color: #fff; }
.brand-mark {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: var(--grad-cyan);
  display: grid;
  place-items: center;
  box-shadow: 0 6px 18px rgba(34, 211, 238, 0.45);
  flex: none;
}
.brand-mark svg { width: 24px; height: 24px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 18px; color: #fff; letter-spacing: 0.06em; }
.brand-text small {
  font-size: 10px;
  letter-spacing: 0.28em;
  color: rgba(234, 243, 255, 0.65);
  font-weight: 600;
}

.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav a {
  position: relative;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 600;
  color: rgba(234, 243, 255, 0.82);
  border-radius: 999px;
  transition: color .25s ease, background .25s ease;
}
.site-nav a:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }
.site-nav a.active { color: #fff; }
.site-nav a.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  transform: translateX(-50%);
  width: 18px; height: 3px;
  border-radius: 3px;
  background: var(--grad-cyan);
}

.nav-actions { display: flex; align-items: center; gap: 14px; }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 20px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero（首页） ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  background: var(--c-dark);
  color: #fff;
  overflow: hidden;
  padding: calc(var(--header-h) + 56px) 0 130px;
}
.hero-bg, .hero-bg img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero-bg img { opacity: 0.5; }
.hero-overlay {
  position: absolute; inset: 0;
  background:
    radial-gradient(52% 46% at 18% 30%, rgba(11, 95, 255, 0.32), transparent 70%),
    radial-gradient(42% 40% at 84% 18%, rgba(34, 211, 238, 0.20), transparent 70%),
    linear-gradient(180deg, rgba(4, 19, 43, 0.80) 0%, rgba(6, 42, 92, 0.55) 52%, rgba(4, 19, 43, 0.92) 100%);
}
.hero-grid {
  position: absolute; inset: 0;
  background:
    repeating-linear-gradient(90deg, rgba(34, 211, 238, 0.05) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(34, 211, 238, 0.04) 0 1px, transparent 1px 96px);
  mask-image: linear-gradient(180deg, transparent, #000 22%, #000 78%, transparent);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 22%, #000 78%, transparent);
}
.hero-scan {
  position: absolute; left: 0; right: 0; top: -30%;
  height: 30%;
  background: linear-gradient(180deg, transparent, rgba(34, 211, 238, 0.10), transparent);
  animation: scan 7s linear infinite;
}
@keyframes scan { 0% { top: -30%; } 100% { top: 110%; } }

.hero-inner { position: relative; z-index: 3; max-width: 860px; }
.hero h1 {
  font-size: clamp(38px, 6.4vw, 68px);
  color: #fff;
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}
.hero h1 .grad {
  background: linear-gradient(100deg, #22D3EE 10%, #7DD3FC 45%, #fff 90%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero-sub {
  font-size: clamp(17px, 2.2vw, 22px);
  color: rgba(234, 243, 255, 0.9);
  font-weight: 600;
  margin-bottom: 18px;
}
.hero-slogan {
  font-size: 15.5px;
  color: rgba(234, 243, 255, 0.66);
  border-left: 3px solid var(--c-cyan);
  padding-left: 16px;
  margin-bottom: 38px;
  max-width: 620px;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; }

.hero-waves { position: absolute; left: 0; right: 0; bottom: -1px; z-index: 2; pointer-events: none; }
.hero-waves .wave {
  position: absolute;
  bottom: 0; left: 0;
  width: 200%; height: 110px;
  animation: waveMove 16s linear infinite;
}
.hero-waves .wave-2 { animation-duration: 26s; animation-direction: reverse; opacity: .55; bottom: 8px; }
@keyframes waveMove { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- 数据条 ---------- */
.stats-wrap { position: relative; z-index: 5; margin-top: -78px; }
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lift);
  padding: 34px 28px;
}
.stat { text-align: center; padding: 6px 10px; position: relative; }
.stat + .stat::before {
  content: "";
  position: absolute;
  left: 0; top: 18%;
  height: 64%; width: 1px;
  background: linear-gradient(180deg, transparent, rgba(11, 95, 255, 0.22), transparent);
}
.stat-num {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.1;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.stat-num sup { font-size: 0.5em; margin-left: 2px; }
.stat-label { font-size: 14px; color: var(--c-body); margin-top: 6px; letter-spacing: 0.04em; }
.stats-note { text-align: center; font-size: 12.5px; color: #8DA0BC; margin-top: 14px; }

/* ---------- 卡片矩阵（能力/方案/案例） ---------- */
.grid { display: grid; gap: 26px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 34px 30px;
  box-shadow: var(--shadow-soft);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--grad-cyan);
  opacity: 0;
  transition: opacity .3s ease;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); border-color: rgba(34, 211, 238, 0.45); }
.card:hover::before { opacity: 1; }
.card h3 { font-size: 20px; margin-bottom: 12px; }
.card p { font-size: 15px; }

.card-icon {
  width: 54px; height: 54px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(11, 95, 255, 0.10), rgba(34, 211, 238, 0.14));
  display: grid; place-items: center;
  margin-bottom: 20px;
  color: var(--c-blue);
}
.card-icon svg { width: 26px; height: 26px; }
.card-tag-en {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--c-cyan);
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}

/* 图片卡片（解决方案/案例） */
.card-media { padding: 0; display: flex; flex-direction: column; }
.card-media .media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: linear-gradient(135deg, #062A5C, #0B5FFF);
}
.card-media .media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}
.card-media:hover .media img { transform: scale(1.05); }
.card-media .body { padding: 26px 28px 30px; display: flex; flex-direction: column; flex: 1; }
.card-media .body h3 { margin-bottom: 10px; }
.card-media .body p { flex: 1; }

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 14.5px;
  margin-top: 18px;
  color: var(--c-blue);
}
.link-more .arrow { transition: transform .25s ease; }
.link-more:hover .arrow { transform: translateX(4px); }

/* ---------- 深色玻璃卡片 ---------- */
.glass {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 32px 30px;
  transition: transform .3s ease, border-color .3s ease, background .3s ease;
}
.glass:hover { transform: translateY(-4px); border-color: rgba(34, 211, 238, 0.5); background: rgba(255, 255, 255, 0.09); }
.glass h3 { color: #EAF3FF; font-size: 19px; margin-bottom: 10px; }
.glass p { font-size: 14.5px; color: rgba(234, 243, 255, 0.68); }

/* ---------- 生态链流程 ---------- */
.eco-flow {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin: 44px 0 52px;
}
.eco-node {
  flex: 1;
  position: relative;
  text-align: center;
  padding: 26px 14px 22px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.eco-node + .eco-node { margin-left: 44px; }
.eco-node + .eco-node::before {
  content: "";
  position: absolute;
  left: -44px; top: 50%;
  width: 44px; height: 2px;
  background: linear-gradient(90deg, rgba(34, 211, 238, 0.15), var(--c-cyan));
}
.eco-node + .eco-node::after {
  content: "";
  position: absolute;
  left: -8px; top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: var(--c-cyan);
}
.eco-node .idx {
  width: 44px; height: 44px;
  margin: 0 auto 14px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-weight: 800; font-size: 17px;
  color: #032042;
  background: var(--grad-cyan);
  box-shadow: 0 0 0 6px rgba(34, 211, 238, 0.12), 0 8px 20px rgba(34, 211, 238, 0.3);
}
.eco-node h3 { font-size: 17px; color: #EAF3FF; margin-bottom: 8px; }
.eco-node p { font-size: 13px; color: rgba(234, 243, 255, 0.62); line-height: 1.65; }
.eco-quote {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  font-size: 16.5px;
  color: rgba(234, 243, 255, 0.8);
  border-left: none;
  padding: 0;
}
.eco-quote cite { display: block; font-style: normal; font-size: 13px; color: rgba(234, 243, 255, 0.45); margin-top: 12px; }
.eco-media {
  margin-top: 48px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 30px 80px rgba(2, 12, 28, 0.5);
}
.eco-media img { width: 100%; }

/* ---------- 县域 chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 12px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 600;
  background: #fff;
  border: 1px solid var(--c-line);
  color: var(--c-ink);
  box-shadow: var(--shadow-soft);
}
.chip .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--grad-cyan);
  box-shadow: 0 0 8px rgba(34, 211, 238, 0.8);
}
.section-dark .chip {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.14);
  color: #EAF3FF;
  box-shadow: none;
}

/* ---------- 分屏区块 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.split.reverse > .split-media { order: 2; }
.split-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lift);
  position: relative;
  background: linear-gradient(135deg, #062A5C, #0B5FFF);
}
.split-media img { width: 100%; height: 100%; object-fit: cover; }
.split-body h2 { font-size: clamp(24px, 3vw, 32px); margin-bottom: 16px; }
.split-body .lead { margin-bottom: 18px; }

/* ---------- 解决方案详情 ---------- */
.solution-block { padding: 84px 0; }
.solution-block:nth-of-type(even) { background: #fff; }
.solution-block .split { margin-bottom: 40px; }
.pain-list li, .check-list li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 10px;
  font-size: 15px;
}
.pain-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 14px; height: 14px;
  border-radius: 4px;
  background: linear-gradient(135deg, rgba(255, 120, 120, 0.9), rgba(255, 80, 80, 0.55));
  mask: none;
  clip-path: polygon(14% 44%, 0 58%, 40% 100%, 100% 18%, 86% 4%, 38% 70%);
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 15px; height: 15px;
  background: var(--grad-cyan);
  clip-path: polygon(14% 44%, 0 58%, 40% 100%, 100% 18%, 86% 4%, 38% 70%);
}
.sol-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 36px; }
.sol-grid article {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  padding: 28px 26px;
  box-shadow: var(--shadow-soft);
}
.solution-block:nth-of-type(even) .sol-grid article { background: var(--c-bg); }
.sol-grid h3 {
  font-size: 16.5px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sol-grid h3 .mini-badge {
  font-size: 10.5px;
  letter-spacing: 0.14em;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--grad-cyan);
  color: #032042;
  font-weight: 800;
}
.sol-grid ul li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  margin-bottom: 10px;
}
.sol-grid ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 11px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--c-blue);
}
.sol-grid .ai-card {
  border-color: rgba(34, 211, 238, 0.55);
  background: linear-gradient(160deg, #062A5C 0%, #04132B 100%);
  box-shadow: 0 16px 44px rgba(6, 42, 92, 0.35);
}
.sol-grid .ai-card h3 { color: #EAF3FF; }
.sol-grid .ai-card ul li { color: rgba(234, 243, 255, 0.78); }
.sol-grid .ai-card ul li::before { background: var(--c-cyan); box-shadow: 0 0 8px rgba(34, 211, 238, 0.9); }
.sol-cta { display: flex; flex-wrap: wrap; gap: 14px; }

.note-small { font-size: 12.5px; color: #8DA0BC; margin-top: 10px; }

/* ---------- 页面 Hero（内页） ---------- */
.page-hero {
  position: relative;
  background: var(--c-dark);
  color: #fff;
  padding: calc(var(--header-h) + 84px) 0 96px;
  overflow: hidden;
}
.page-hero .ph-bg, .page-hero .ph-bg img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
.page-hero .ph-bg img { opacity: 0.34; }
.page-hero .ph-overlay {
  position: absolute; inset: 0;
  background:
    radial-gradient(46% 52% at 16% 36%, rgba(11, 95, 255, 0.36), transparent 70%),
    radial-gradient(36% 40% at 88% 12%, rgba(34, 211, 238, 0.18), transparent 70%),
    linear-gradient(180deg, rgba(4, 19, 43, 0.72), rgba(4, 19, 43, 0.94));
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { color: #fff; font-size: clamp(32px, 5vw, 52px); margin-bottom: 18px; }
.page-hero .hero-desc { max-width: 720px; font-size: 17px; color: rgba(234, 243, 255, 0.78); }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: rgba(234, 243, 255, 0.6);
  margin-bottom: 26px;
}
.breadcrumb a { color: rgba(234, 243, 255, 0.75); }
.breadcrumb a:hover { color: var(--c-cyan); }
.breadcrumb .sep { opacity: 0.5; }
.breadcrumb [aria-current] { color: var(--c-cyan); font-weight: 600; }

/* ---------- 案例页 ---------- */
.case-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lift);
  margin-bottom: 34px;
  background: linear-gradient(135deg, #062A5C, #0B5FFF);
}
.case-map img { width: 100%; }
.case-card .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.case-card .meta span {
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(11, 95, 255, 0.08);
  color: var(--c-blue);
}
.legacy-note {
  border: 1px dashed rgba(11, 95, 255, 0.35);
  background: rgba(11, 95, 255, 0.04);
  border-radius: var(--radius-md);
  padding: 26px 28px;
}
.legacy-note h3 { font-size: 17px; margin-bottom: 10px; }
.legacy-note p { font-size: 14.5px; }

/* ---------- 关于页 ---------- */
.intro-quote {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-line);
  box-shadow: var(--shadow-soft);
  padding: clamp(30px, 4.5vw, 56px);
  position: relative;
  overflow: hidden;
}
.intro-quote::before {
  content: "“";
  position: absolute;
  top: -30px; left: 18px;
  font-size: 160px;
  font-family: Georgia, serif;
  color: rgba(11, 95, 255, 0.08);
  line-height: 1;
}
.intro-quote p { font-size: 17px; color: var(--c-ink); margin-bottom: 18px; position: relative; }
.intro-quote p:last-child { margin-bottom: 0; }
.intro-cite { text-align: right; font-size: 13px; color: #8DA0BC; margin-top: 14px; }

.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value-card { text-align: left; }
.value-card .vk {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: var(--c-cyan);
  margin-bottom: 10px;
}
.value-card .vv { font-size: 20px; font-weight: 800; color: var(--c-ink); line-height: 1.5; }
.section-dark .value-card .vv { color: #EAF3FF; }

.slogan-band {
  margin-top: 56px;
  padding: 44px 40px;
  border-radius: var(--radius-lg);
  background: var(--grad-brand);
  position: relative;
  overflow: hidden;
  text-align: center;
}
.slogan-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 120% at 80% 0%, rgba(34, 211, 238, 0.35), transparent 60%);
}
.slogan-band p {
  position: relative; z-index: 1;
  font-size: clamp(19px, 2.6vw, 26px);
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.03em;
}

.facts-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-soft); }
.facts-table th, .facts-table td {
  text-align: left;
  padding: 16px 24px;
  font-size: 15px;
  border-bottom: 1px solid rgba(11, 95, 255, 0.08);
}
.facts-table tr:last-child th, .facts-table tr:last-child td { border-bottom: none; }
.facts-table th {
  width: 220px;
  color: var(--c-body);
  font-weight: 600;
  background: rgba(11, 95, 255, 0.04);
  white-space: nowrap;
}
.facts-table td { color: var(--c-ink); font-weight: 600; }

.four-in-one { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 34px; }
.fio {
  text-align: center;
  padding: 26px 14px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.fio strong { display: block; font-size: 19px; color: #EAF3FF; margin-bottom: 6px; }
.fio span { font-size: 13px; color: rgba(234, 243, 255, 0.6); }
.fio .plus { display: none; }

/* ---------- 引流（白皮书） ---------- */
.lead-magnet {
  position: relative;
  border-radius: var(--radius-lg);
  background: var(--grad-brand);
  padding: clamp(34px, 5vw, 60px);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
  box-shadow: 0 30px 70px rgba(6, 42, 92, 0.4);
}
.lead-magnet::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(50% 90% at 88% 10%, rgba(34, 211, 238, 0.32), transparent 62%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 72px);
}
.lead-magnet > * { position: relative; z-index: 1; }
.lead-magnet h2 { color: #fff; font-size: clamp(24px, 3vw, 32px); margin-bottom: 14px; }
.lead-magnet .lm-copy p { color: rgba(234, 243, 255, 0.82); font-size: 15.5px; margin-bottom: 8px; }
.lead-magnet .lm-points { margin-top: 18px; }
.lead-magnet .lm-points li {
  color: rgba(234, 243, 255, 0.85);
  font-size: 14.5px;
  padding-left: 24px;
  position: relative;
  margin-bottom: 8px;
}
.lead-magnet .lm-points li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 14px; height: 14px;
  background: var(--c-cyan);
  clip-path: polygon(14% 44%, 0 58%, 40% 100%, 100% 18%, 86% 4%, 38% 70%);
}

/* ---------- 表单 ---------- */
.form-card {
  background: rgba(255, 255, 255, 0.96);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: 0 20px 50px rgba(2, 12, 28, 0.3);
}
.form-card .form-title { font-size: 18px; font-weight: 800; color: var(--c-ink); margin-bottom: 18px; }
.form-row { margin-bottom: 16px; }
.form-row label {
  display: block;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--c-ink);
  margin-bottom: 7px;
}
.form-row label .req { color: #E05252; margin-left: 2px; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%;
  padding: 13px 16px;
  font-size: 15px;
  font-family: var(--font-sans);
  color: var(--c-ink);
  background: #F2F7FF;
  border: 1.5px solid rgba(11, 95, 255, 0.14);
  border-radius: 12px;
  outline: none;
  transition: border-color .25s ease, box-shadow .25s ease, background .25s ease;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  border-color: var(--c-blue);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(11, 95, 255, 0.12);
}
.form-row textarea { resize: vertical; min-height: 120px; }
.form-hint { font-size: 12.5px; color: #8DA0BC; margin-top: 12px; }
.form-card .btn { width: 100%; }

/* ---------- 联系页 ---------- */
.entry-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.entry-card { text-align: left; display: flex; flex-direction: column; }
.entry-card .btn { margin-top: auto; align-self: flex-start; }
.entry-card p { flex: 1; margin-bottom: 22px; }

.contact-split { display: grid; grid-template-columns: 1.15fr 1fr; gap: 40px; align-items: start; }
.contact-info-card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 32px 30px;
  margin-bottom: 24px;
}
.contact-info-card h3 { font-size: 18px; margin-bottom: 18px; }
.info-line { display: flex; gap: 14px; padding: 12px 0; border-bottom: 1px dashed rgba(11, 95, 255, 0.12); align-items: flex-start; }
.info-line:last-child { border-bottom: none; }
.info-line .ic { color: var(--c-blue); flex: none; margin-top: 3px; }
.info-line .ic svg { width: 20px; height: 20px; }
.info-line .k { font-size: 13px; color: #8DA0BC; display: block; }
.info-line .v { font-size: 15px; color: var(--c-ink); font-weight: 600; word-break: break-all; }

.qr-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.qr-box {
  border: 2px dashed rgba(11, 95, 255, 0.35);
  border-radius: var(--radius-md);
  background: rgba(11, 95, 255, 0.03);
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-align: center;
  padding: 16px;
}
.qr-box svg { width: 52px; height: 52px; color: var(--c-blue); opacity: 0.75; }
.qr-box .qr-label { font-size: 14px; font-weight: 700; color: var(--c-ink); }
.qr-box .qr-sub { font-size: 11.5px; color: #8DA0BC; }

/* ---------- CTA 横幅 ---------- */
.cta-banner {
  position: relative;
  background: var(--c-dark);
  overflow: hidden;
  padding: 84px 0;
}
.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(46% 80% at 12% 20%, rgba(11, 95, 255, 0.4), transparent 65%),
    radial-gradient(40% 70% at 90% 80%, rgba(34, 211, 238, 0.22), transparent 60%);
}
.cta-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  flex-wrap: wrap;
}
.cta-inner h2 { color: #fff; font-size: clamp(24px, 3.2vw, 34px); margin-bottom: 12px; }
.cta-inner p { color: rgba(234, 243, 255, 0.72); max-width: 560px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: #020E1F;
  color: rgba(234, 243, 255, 0.62);
  padding: 72px 0 0;
  font-size: 14.5px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 44px;
  padding-bottom: 52px;
}
.footer-brand p { margin-top: 18px; max-width: 320px; line-height: 1.8; }
.footer-brand .brand-text strong { font-size: 17px; }
.footer-col h4 {
  color: #EAF3FF;
  font-size: 15px;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}
.footer-col ul li { margin-bottom: 12px; }
.footer-col a { color: rgba(234, 243, 255, 0.62); }
.footer-col a:hover { color: var(--c-cyan); }
.footer-contact li { margin-bottom: 12px; display: flex; gap: 10px; }
.footer-contact .k { color: rgba(234, 243, 255, 0.4); flex: none; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 26px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: rgba(234, 243, 255, 0.42);
}
.footer-bottom a { color: rgba(234, 243, 255, 0.6); }
.footer-bottom a:hover { color: var(--c-cyan); }
.footer-ai {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(34, 211, 238, 0.35);
  color: var(--c-cyan) !important;
  font-weight: 600;
}
.footer-ai:hover { background: rgba(34, 211, 238, 0.1); }

/* ---------- 滚动渐入动画 ---------- */
html.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s cubic-bezier(.22, .61, .36, 1), transform .7s cubic-bezier(.22, .61, .36, 1);
  transition-delay: var(--d, 0s);
}
html.js .reveal.visible { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .sol-grid { grid-template-columns: 1fr; }
  .four-in-one { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .eco-flow { flex-direction: column; gap: 14px; }
  .eco-node + .eco-node { margin-left: 0; }
  .eco-node + .eco-node::before {
    left: 50%; top: -14px;
    width: 2px; height: 14px;
    background: linear-gradient(180deg, rgba(34, 211, 238, 0.15), var(--c-cyan));
  }
  .eco-node + .eco-node::after {
    left: 50%; top: -6px;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--c-cyan);
  }
}

@media (max-width: 860px) {
  .site-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    width: min(320px, 86vw);
    height: calc(100svh - var(--header-h));
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    background: rgba(4, 19, 43, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 24px 20px;
    transform: translateX(100%);
    transition: transform .35s cubic-bezier(.22, .61, .36, 1);
    box-shadow: -12px 0 40px rgba(2, 12, 28, 0.5);
  }
  .site-nav.open { transform: translateX(0); }
  .site-nav a { padding: 15px 18px; font-size: 16px; }
  .site-nav a.active::after { display: none; }
  .site-nav a.active { background: rgba(34, 211, 238, 0.14); color: var(--c-cyan); }
  .nav-toggle { display: flex; }
  body.nav-open { overflow: hidden; }
  .nav-actions .btn { display: none; }

  .split, .contact-split, .lead-magnet { grid-template-columns: 1fr; gap: 36px; }
  .split.reverse > .split-media { order: 0; }
  .entry-cards, .values-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 22px 8px; }
  .stat:nth-child(3)::before { display: none; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  .section { padding: 68px 0; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero { padding-bottom: 110px; }
  .facts-table th { width: 128px; }
  .facts-table th, .facts-table td { padding: 13px 14px; font-size: 13.5px; }
  .qr-grid { grid-template-columns: 1fr 1fr; }
  .four-in-one { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* ---------- V1.1：十大解决方案导航与组头 ---------- */
/* 修复：偶数 solution-block 下 ai-card 深色背景被 .sol-grid article 浅底规则覆盖的问题 */
.solution-block:nth-of-type(even) .sol-grid .ai-card {
  background: linear-gradient(160deg, #062A5C 0%, #04132B 100%);
}
.sol-group-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 15.5px;
  font-weight: 800;
  color: var(--c-ink);
  letter-spacing: 0.04em;
  margin: 34px 0 18px;
}
.sol-group-title .gt-en {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.22em;
  color: var(--c-blue);
  background: rgba(11, 95, 255, 0.08);
  border: 1px solid rgba(11, 95, 255, 0.18);
  border-radius: 999px;
  padding: 4px 12px;
}

.sol-nav {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}
.sol-nav-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 18px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  color: var(--c-ink);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.sol-nav-item:hover {
  transform: translateY(-4px);
  border-color: rgba(11, 95, 255, 0.35);
  box-shadow: var(--shadow-lift);
}
.sol-nav-item .no {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
  color: var(--c-blue);
}
.sol-nav-item .nm {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.55;
  flex: 1;
}
.sol-nav-item .arrow { color: var(--c-cyan); font-weight: 800; }

.sol-group-head {
  text-align: center;
  padding-top: 72px;
}
.sol-group-head h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 12px; }
.sol-group-head p { color: #5C6F8F; max-width: 640px; margin: 0 auto; }

@media (max-width: 1024px) {
  .sol-nav { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 560px) {
  .sol-nav { grid-template-columns: 1fr 1fr; }
}