/* ============================================================
   Sayco 公司官网 · 全局唯一样式表
   设计依据：《Sayco官网UI设计风格.md》
   体系：品牌蓝 / 深科技蓝 / 白色 / 浅灰，日系极简，轻量克制
   ============================================================ */

/* ---------- 设计系统变量 ---------- */
:root {
  --brand-primary: #1677FF;
  --brand-deep: #0A2540;
  --brand-gradient: linear-gradient(135deg, #1677FF 0%, #0A2540 100%);
  --bg-light: #F5F7FA;
  --bg-white: #FFFFFF;
  --text-title: #0A2540;
  --text-body: #4A5A6A;
  --text-light: #8B98A8;
  --border-color: #E3E9F2;
  --radius: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 2px 8px rgba(10, 37, 64, 0.05);
  --shadow-md: 0 6px 24px rgba(10, 37, 64, 0.08);
  /* 间距刻度（8px 基准，见《Sayco官网UI设计规范.md》第二章） */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --container-max: 1280px;
  --section-spacing: 100px;
  /* 字体方案【修改 · 2026-08-18】：英文 Inter + Space Grotesk，中文 Noto Sans SC，日文 Noto Sans JP */
  --font-en: "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-zh: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-jp: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  /* 展示字体：标题/数字等，西文用 Space Grotesk，CJK 回退到对应语言字体 */
  --font-display-zh: "Space Grotesk", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display-ja: "Space Grotesk", "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-display-en: "Space Grotesk", "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-stack: var(--font-en);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-stack);
  color: var(--text-body);
  background: var(--bg-white);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3, h4 { color: var(--text-title); font-weight: 700; line-height: 1.35; }
/* ---------- 三语字体分配【新增 · 2026-08-18】 ---------- */
html[lang="zh-CN"] body { font-family: var(--font-zh); }
html[lang="ja"] body { font-family: var(--font-jp); }
html[lang="en"] body { font-family: var(--font-en); }
html[lang="zh-CN"] h1, html[lang="zh-CN"] h2, html[lang="zh-CN"] h3, html[lang="zh-CN"] h4 { font-family: var(--font-display-zh); }
html[lang="ja"] h1, html[lang="ja"] h2, html[lang="ja"] h3, html[lang="ja"] h4 { font-family: var(--font-display-ja); }
html[lang="en"] h1, html[lang="en"] h2, html[lang="en"] h3, html[lang="en"] h4 { font-family: var(--font-display-en); }

/* ---------- 通用布局 ---------- */
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
.section { padding: var(--section-spacing) 0; }
.section-alt { background: var(--bg-light); }
.section-dark { background: var(--brand-deep); }

.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head .eyebrow,
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--brand-primary);
  margin-bottom: 14px;
  text-transform: uppercase;
}
.section-head h2 { font-size: 34px; margin-bottom: 14px; letter-spacing: 0.5px; }
.section-head p { font-size: 16px; color: var(--text-body); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  padding: 13px 30px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all 0.25s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--brand-primary); color: #fff; }
.btn-primary:hover { background: #0E5FD8; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-ghost { border-color: var(--border-color); color: var(--text-title); background: #fff; }
.btn-ghost:hover { border-color: var(--brand-primary); color: var(--brand-primary); }
.btn-light { background: #fff; color: var(--brand-deep); }
.btn-light:hover { background: var(--bg-light); }

/* ---------- 滚动渐入 ---------- */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ---------- 导航栏【改版 · 2026-08-27】：无白底、固定叠于 KV 图上方、毛玻璃半透明叠底 ---------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.55);
  -webkit-backdrop-filter: blur(16px) saturate(1.6);
  backdrop-filter: blur(16px) saturate(1.6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.6);
}
.nav-inner { position: relative; display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 28px; }
.logo { display: inline-flex; align-items: center; }
.logo .logo-img { height: 24px; width: auto; display: block; }
/* 主导航入口居中显示【改版 · 2026-08-27】 */
.nav-links { display: flex; gap: 26px; position: absolute; left: 50%; transform: translateX(-50%); }
.nav-links a { font-size: 14.5px; color: var(--text-body); padding: 6px 0; position: relative; }
.nav-links a:hover, .nav-links a.active { color: var(--brand-primary); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -22px;
  height: 2px; background: var(--brand-primary);
}
.nav-actions { display: flex; align-items: center; gap: 14px; }
/* ---------- 语言切换胶囊【改版 · 2026-08-27】 ---------- */
.lang-capsule {
  display: inline-flex; align-items: center; gap: 2px;
  border: 1px solid var(--border-color); border-radius: 999px; background: #fff; padding: 3px;
}
.lang-capsule button {
  border: 0; background: transparent; cursor: pointer;
  font-size: 12px; line-height: 1; letter-spacing: 0.5px; color: var(--text-body);
  padding: 6px 11px; border-radius: 999px; transition: all .2s ease;
}
.lang-capsule button:not(.on):hover { color: var(--brand-primary); }
.lang-capsule button.on { background: var(--brand-primary); color: #fff; font-weight: 600; }
.nav-cta { padding: 9px 20px; font-size: 14px; display: inline-flex; align-items: center; gap: 7px; }
.nav-cta svg { flex: none; }
.nav-toggle { display: none; background: none; border: none; padding: 6px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text-title); margin: 5px 0; }

/* ---------- 导航下拉菜单（NEX） ---------- */
.nav-dropdown { position: relative; display: flex; align-items: center; }
.nav-drop-btn {
  background: none; border: none; cursor: default;
  font: inherit; font-size: 14.5px; color: var(--text-body);
  padding: 6px 0; display: inline-flex; align-items: center; gap: 6px;
}
.nav-drop-btn::after {
  content: ""; width: 6px; height: 6px; flex: none;
  border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px); transition: transform .2s ease;
}
.nav-dropdown:hover .nav-drop-btn,
.nav-dropdown:focus-within .nav-drop-btn { color: var(--brand-primary); }
.nav-dropdown:hover .nav-drop-btn::after { transform: rotate(225deg) translateY(1px); }
.nav-drop-menu {
  position: absolute; top: calc(100% + 16px); left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 196px; background: #fff;
  border: 1px solid var(--border-color); border-radius: 10px;
  box-shadow: 0 8px 24px rgba(10, 37, 64, 0.08);
  padding: 8px; display: flex; flex-direction: column; gap: 2px;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
}
/* 按钮与弹窗间的透明桥接，避免鼠标移动间隙关闭 */
.nav-drop-menu::before { content: ""; position: absolute; top: -16px; left: 0; right: 0; height: 16px; }
.nav-dropdown:hover .nav-drop-menu,
.nav-dropdown:focus-within .nav-drop-menu {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.nav-drop-menu a {
  font-size: 13.5px; color: var(--text-body);
  padding: 9px 12px; border-radius: 7px; white-space: nowrap;
}
.nav-drop-menu a:hover { background: var(--bg-light); color: var(--brand-primary); }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 88px 0 0; background: var(--bg-white); }
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    radial-gradient(560px 320px at 82% 18%, rgba(22, 119, 255, 0.10), transparent 70%),
    radial-gradient(420px 260px at 8% 82%, rgba(10, 37, 64, 0.05), transparent 70%),
    linear-gradient(rgba(10, 37, 64, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 37, 64, 0.035) 1px, transparent 1px);
  background-size: auto, auto, 48px 48px, 48px 48px;
}
.hero-inner { position: relative; display: flex; align-items: center; gap: 60px; }
/* KV 通栏主视觉 + 文案叠放其上【改版 · 2026-08-27】：图片自页头下全宽铺开，文案覆盖于图上部留白区 */
.hero.hero-home { padding: 0; }
.hero.hero-home .hero-bg { display: none; }
/* 首屏占满：KV 容器高度＝视口高度（100vh 兜底、100dvh 优先）【改版 · 2026-08-27】 */
.hero.hero-home .hero-kv { height: 100vh; height: 100dvh; }
.hero.hero-home .hero-kv img { height: 100%; object-fit: cover; }
.hero-inner.hero-center { flex-direction: column; align-items: center; text-align: center; gap: 16px; }
.hero.hero-home .hero-inner.hero-center {
  position: absolute; top: 0; left: 0; right: 0; z-index: 2;
  padding: clamp(96px, 9vw, 140px) 24px 0;
}
.hero-center .hero-copy { flex: none; width: 100%; max-width: 780px; }
.hero-copy h1 { font-size: 64px; letter-spacing: 1px; margin-bottom: 22px; } /* 主标题 64px【修改 · 2026-08-27】 */
.hero-copy h1 em { font-style: normal; color: var(--brand-primary); }
.hero-sub { font-size: 17px; margin-bottom: 36px; max-width: 520px; }
.hero-center .hero-sub { margin: 0 auto; max-width: 640px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-note { margin-top: 22px; font-size: 13px; color: var(--text-light); }
/* KV 通栏主视觉图【修改 · 2026-08-27】：按 1920 宽高 880px 比例（1920/880），优先裁剪上半部分 */
.hero-kv { position: relative; overflow: hidden; aspect-ratio: 1920 / 880; }
.hero-kv img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center bottom; }

/* ---------- 数据带 ---------- */
.stats { border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { text-align: center; padding: 44px 12px; border-left: 1px solid var(--border-color); }
.stat:first-child { border-left: none; }
.stat-num { font-size: 40px; font-weight: 800; color: var(--brand-deep); }
.plus, .stat-unit { font-size: 20px; color: var(--brand-primary); font-weight: 700; margin: 0 2px; } /* “近/約/Nearly” 前缀与单位同款样式【修改 · 2026-08-28】 */
.stat p { font-size: 14px; color: var(--text-light); margin-top: 6px; }
.stat-badge {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 10px;
  font-size: 14px; font-weight: 700; color: var(--brand-deep);
}
.stat-badge::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--brand-primary); }

/* ---------- 全球业务分布地图【修改 · 2026-08-28】：浅色参考图风格，文案移至地图下方，背景渐变过渡至下一模块底色 ---------- */
.map-section { background: linear-gradient(180deg, #FFFFFF 0%, #EDF4FE 55%, var(--bg-light) 100%); }
.map-head { text-align: center; margin-bottom: 32px; }
.map-head h2 { font-size: 34px; font-weight: 700; color: var(--brand-primary); letter-spacing: 6px; }
.map-divider { display: block; width: 44px; height: 2px; background: var(--brand-primary); margin: 20px auto 0; } /* 分隔线位于主标题下方【修改 · 2026-08-28】 */
.map-wrap { position: relative; } /* 地图据点名称标签锚点【修改 · 2026-09-03】 */
.map-wrap img { display: block; width: 100%; height: auto; }
.map-label { position: absolute; z-index: 1; font-size: 14px; font-weight: 600; color: var(--brand-deep); letter-spacing: 2px; line-height: 1; white-space: nowrap; pointer-events: none; text-shadow: 0 0 4px #FFFFFF, 0 0 8px #FFFFFF; } /* 地图核心据点名称标签：武汉/上海/东京【修改 · 2026-09-03】 */
.map-label--wuhan { left: 77.3%; top: 40.4%; transform: translate(-72%, 16px); }
.map-label--shanghai { left: 83.4%; top: 37.9%; transform: translate(-18%, 18px); }
.map-label--tokyo { left: 88.8%; top: 30.6%; transform: translate(12px, 12px); }
.map-copy { text-align: center; margin-top: 16px; }
.map-copy p { max-width: 780px; margin: 0 auto; color: var(--text-light); font-size: 15px; line-height: 2; }

/* ---------- 业务卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; } /* 合并 develop：三列卡片+响应式【手机端适配】 */
.card {
  background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-lg);
  padding: 34px 28px; transition: all 0.25s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(22, 119, 255, 0.4); }
.card-icon {
  width: 52px; height: 52px; border-radius: 12px; margin-bottom: 20px;
  background: rgba(22, 119, 255, 0.08); display: flex; align-items: center; justify-content: center;
}
.card-icon svg { width: 26px; height: 26px; stroke: var(--brand-primary); fill: none; stroke-width: 1.6; }
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { font-size: 14px; margin-bottom: 16px; }
.card-link { font-size: 14px; font-weight: 600; color: var(--brand-primary); }
.card-link:hover { text-decoration: underline; }

/* ---------- 四大业务卡片：封面图样式【修改 · 2026-08-19】去掉 icon 与了解更多，改为封面图 ---------- */
.cards-media .card { padding: 0 0 26px; overflow: hidden; }
.cards-media .card-cover { margin: 0 0 20px; background: var(--bg-light); }
.cards-media .card-cover img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.cards-media .card h3 { padding: 0 28px; }
.cards-media .card p { padding: 0 28px; margin-bottom: 0; }

/* ---------- 旗舰平台 ---------- */
.flagship-inner { display: flex; align-items: center; gap: 56px; }
.flagship-copy { flex: 1 1 46%; }
.flagship-copy h2 { font-size: 32px; margin-bottom: 16px; }
.flagship-copy > p { font-size: 15.5px; margin-bottom: 26px; }
.value-list { display: grid; gap: 14px; margin-bottom: 26px; }
.value-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 14.5px; }
.value-list li b { color: var(--text-title); white-space: nowrap; }
.value-list li i {
  flex: none; width: 20px; height: 20px; border-radius: 50%; margin-top: 3px;
  background: rgba(22, 119, 255, 0.12); position: relative;
}
.value-list li i::after {
  content: ""; position: absolute; left: 6px; top: 5px; width: 8px; height: 5px;
  border-left: 2px solid var(--brand-primary); border-bottom: 2px solid var(--brand-primary);
  transform: rotate(-45deg);
}
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; }
.case-card .chips { margin-bottom: 0; }
.chips span {
  font-size: 13px; color: var(--brand-deep); background: var(--bg-light);
  border: 1px solid var(--border-color); border-radius: 999px; padding: 7px 16px;
}
.flagship-img { flex: 1 1 54%; }
.flagship-img .img-frame {
  border: 1px solid var(--border-color); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-md); background: #fff;
}
/* 旗舰平台产品实拍图【新增 · 2026-08-18】 */
.flagship-img .img-frame img { display: block; width: 100%; }

/* ---------- 核心优势（深色区） ---------- */
.section-dark .section-head h2 { color: #fff; }
.section-dark .section-head p { color: rgba(255, 255, 255, 0.72); }
.section-dark .eyebrow { color: #69AFFF; }
.strengths { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.strength {
  border: 1px solid rgba(255, 255, 255, 0.14); border-radius: var(--radius-lg);
  padding: 32px 26px; background: rgba(255, 255, 255, 0.03); transition: all 0.25s ease;
}
.strength:hover { background: rgba(255, 255, 255, 0.06); border-color: rgba(105, 175, 255, 0.5); }
.strength h3 { color: #fff; font-size: 18px; margin-bottom: 10px; }
.strength p { font-size: 14px; color: rgba(255, 255, 255, 0.7); }
.strength .s-tag { font-size: 12px; color: #69AFFF; letter-spacing: 2px; display: block; margin-bottom: 14px; }
.cert-bar {
  display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap;
  margin-top: 30px;
}
.cert-bar span {
  color: rgba(255, 255, 255, 0.85); font-size: 13px; letter-spacing: 0.5px;
  border: 1px solid rgba(105, 175, 255, 0.45); border-radius: 999px; padding: 9px 18px;
  background: rgba(22, 119, 255, 0.10); transition: all .2s ease;
}
.cert-bar span:hover { border-color: #69AFFF; color: #fff; }

/* ---------- 案例轮播 ---------- */
.carousel { position: relative; }
.carousel-viewport { overflow: hidden; border-radius: var(--radius-lg); }
.carousel-track { display: flex; transition: transform 0.5s ease; }
.carousel-slide { flex: 0 0 100%; background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-lg); overflow: hidden; display: flex; align-items: stretch; }
/* 轮播案例与案例详情页卡片对齐【重构 · 2026-08-19】：封面图 + 项目内容 + 案例介绍 + 标签 */
.carousel-cover { flex: 0 0 46%; background: var(--bg-light); }
.carousel-cover img { display: block; width: 100%; height: 100%; object-fit: cover; }
.carousel-body { flex: 1; padding: 44px 48px; display: flex; flex-direction: column; align-items: flex-start; }
.carousel-body .chips { margin-top: auto; }
.case-tag {
  display: inline-block; font-size: 12.5px; font-weight: 600; color: var(--brand-primary);
  background: rgba(22, 119, 255, 0.08); border-radius: 999px; padding: 5px 14px; margin-bottom: 18px;
}
.carousel-slide h3 { font-size: 22px; margin-bottom: 12px; }
.carousel-slide p { font-size: 15px; margin-bottom: 22px; max-width: 720px; }
.carousel-nav { display: flex; align-items: center; justify-content: center; gap: 18px; margin-top: 28px; }
.carousel-btn {
  width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border-color);
  background: #fff; color: var(--text-title); font-size: 17px; transition: all 0.2s ease;
}
.carousel-btn:hover { border-color: var(--brand-primary); color: var(--brand-primary); }
.carousel-dots { display: flex; gap: 8px; }
.carousel-dots button { width: 8px; height: 8px; border-radius: 50%; border: none; background: var(--border-color); transition: all 0.2s ease; }
.carousel-dots button.active { background: var(--brand-primary); width: 22px; border-radius: 999px; }
.carousel-more { text-align: center; margin-top: 34px; }

/* ---------- 服务流程 ---------- */
.process-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.step { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius); padding: 26px 18px; transition: all 0.25s ease; }
.step:hover { border-color: rgba(22, 119, 255, 0.4); box-shadow: var(--shadow-sm); }
.step .no { font-size: 22px; font-weight: 800; color: rgba(22, 119, 255, 0.35); display: block; margin-bottom: 12px; }
.step h3 { font-size: 15.5px; margin-bottom: 6px; }
.step p { font-size: 12.5px; color: var(--text-light); line-height: 1.6; }

/* ---------- 底部 CTA + 表单 ---------- */
.contact-inner { display: flex; gap: 64px; align-items: flex-start; }
.contact-copy { flex: 1 1 44%; }
.contact-copy h2 { font-size: 32px; margin-bottom: 16px; }
.contact-copy > p { margin-bottom: 30px; }
.contact-info { display: grid; gap: 12px; font-size: 14.5px; }
.contact-info b { color: var(--text-title); margin-right: 10px; }
.contact-form {
  flex: 1 1 56%; background: #fff; border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-sm);
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field { display: grid; gap: 7px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-size: 13.5px; color: var(--text-title); font-weight: 600; }
.form-field label i { color: var(--brand-primary); font-style: normal; margin-left: 2px; }
.form-field input, .form-field textarea, .form-field select {
  font-family: inherit; font-size: 14.5px; color: var(--text-title);
  border: 1px solid var(--border-color); border-radius: 8px; padding: 12px 14px;
  background: #fff; outline: none; transition: border-color 0.2s ease; width: 100%;
}
.form-field textarea { min-height: 104px; resize: vertical; }
.form-field input:focus, .form-field textarea:focus { border-color: var(--brand-primary); }
.form-submit { grid-column: 1 / -1; display: flex; align-items: center; gap: 16px; margin-top: 6px; }
.form-msg { font-size: 14px; color: var(--brand-primary); }
.form-msg.error { color: #E5484D; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.form-note { grid-column: 1 / -1; font-size: 12.5px; color: var(--text-light); }

/* ---------- 页脚 ---------- */
.footer { background: var(--brand-deep); color: rgba(255, 255, 255, 0.72); padding: 64px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 44px; border-bottom: 1px solid rgba(255, 255, 255, 0.12); }
.footer-brand p { font-size: 13.5px; margin-top: 16px; max-width: 300px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 18px; }
.footer ul { display: grid; gap: 11px; font-size: 13.5px; }
.footer ul a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding-top: 26px; font-size: 12.5px; color: rgba(255, 255, 255, 0.5); }

/* ---------- 备案号链接与复制提示【新增 · 2026-08-28】 ---------- */
a.beian-link { color: inherit; text-decoration: none; transition: color 0.2s ease; }
a.beian-link:hover { color: #fff; text-decoration: underline; }
#beian-toast {
  position: fixed;
  left: 50%;
  bottom: 36px;
  transform: translateX(-50%) translateY(12px);
  background: rgba(10, 37, 64, 0.92);
  color: #fff;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.6;
  max-width: 86vw;
  text-align: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}
#beian-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ============================================================
   【新增 · 2026-08-17 · 内页通用组件】
   适用于 product / solutions / pricing / cases / resources / company
   遵循设计系统：品牌蓝 / 深科技蓝 / 白 / 浅灰，轻量克制
   ============================================================ */

/* ---------- 内页头部 ---------- */
.page-hero { position: relative; overflow: hidden; padding: 116px 0 64px; background: var(--bg-light); border-bottom: 1px solid var(--border-color); } /* 顶部预留固定页头 68px【改版 · 2026-08-27】 */
.page-hero .hero-bg { background-size: auto, auto, 48px 48px, 48px 48px; }
.page-hero-inner { position: relative; max-width: 780px; }
.page-hero h1 { font-size: 38px; letter-spacing: 0.5px; margin-bottom: 16px; }
.page-hero h1 em { font-style: normal; color: var(--brand-primary); }
.page-hero p { font-size: 16px; max-width: 640px; }
.page-hero .hero-cta { margin-top: 30px; }
.crumb { display: none; font-size: 12.5px; color: var(--text-light); margin-bottom: 18px; } /* 面包屑导航隐藏【修改 · 2026-08-18】 */
.crumb a:hover { color: var(--brand-primary); }

/* ---------- 选项卡 ---------- */
.tabs-nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 44px; }
.tab-btn {
  padding: 10px 24px; border-radius: 999px; border: 1px solid var(--border-color);
  background: #fff; font-size: 14.5px; font-weight: 600; color: var(--text-body); transition: all 0.2s ease;
}
.tab-btn:hover { border-color: var(--brand-primary); color: var(--brand-primary); }
.tab-btn.active { background: var(--brand-primary); border-color: var(--brand-primary); color: #fff; }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: tabFade 0.4s ease; }
@keyframes tabFade { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- 筛选栏（单行 · 水平滚动）【合并 develop 手机端适配】 ---------- */
.filter-bar {
  display: flex; flex-wrap: nowrap; justify-content: center; gap: 10px; margin-bottom: 40px;
  overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none;
}
.filter-bar::-webkit-scrollbar { display: none; }
.filter-btn {
  flex-shrink: 0; white-space: nowrap;
  padding: 9px 22px; border-radius: 999px; border: 1px solid var(--border-color);
  background: #fff; font-size: 14px; font-weight: 600; color: var(--text-body); transition: all 0.2s ease;
}
.filter-btn:hover { border-color: var(--brand-primary); color: var(--brand-primary); }
.filter-btn.active { background: var(--brand-deep); border-color: var(--brand-deep); color: #fff; }

/* ---------- 三列卡片 / 案例网格 ---------- */
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card {
  background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-lg);
  padding: 32px 28px; transition: all 0.25s ease; display: flex; flex-direction: column;
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(22, 119, 255, 0.4); }
/* 案例卡片封面图【新增 · 2026-08-19】 */
.case-cover { margin: -32px -28px 22px; border-radius: var(--radius-lg) var(--radius-lg) 0 0; overflow: hidden; border-bottom: 1px solid var(--border-color); background: var(--bg-light); }
.case-cover img { display: block; width: 100%; aspect-ratio: 800 / 440; object-fit: cover; }
.case-card h3 { font-size: 18px; margin-bottom: 10px; }
/* 案例角标（标杆案例标记）【新增 · 2026-08-17】 */
.case-tag {
  display: inline-block; align-self: flex-start; margin-bottom: 14px;
  padding: 4px 12px; border-radius: 999px;
  background: rgba(22, 119, 255, 0.08); color: var(--brand-primary);
  font-size: 12px; font-weight: 700; letter-spacing: 0.5px;
}
.case-card > p { font-size: 14px; margin-bottom: 18px; flex: 1; }
.case-card .case-meta { border-top: 1px solid var(--border-color); padding-top: 16px; gap: 22px; }
.case-kpi { display: flex; gap: 26px; flex-wrap: wrap; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border-color); }
.case-kpi div { font-size: 12.5px; color: var(--text-light); }
.case-kpi b { display: block; font-size: 19px; color: var(--brand-primary); font-weight: 800; }

/* ---------- 对比表格 ---------- */
.compare-wrap { overflow-x: auto; border: 1px solid var(--border-color); border-radius: var(--radius-lg); background: #fff; }
.compare-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 720px; }
.compare-table th, .compare-table td { padding: 15px 20px; text-align: left; border-bottom: 1px solid var(--border-color); vertical-align: top; }
.compare-table thead th { background: var(--brand-deep); color: #fff; font-size: 14.5px; }
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr:hover { background: var(--bg-light); }
.compare-table td:first-child { font-weight: 600; color: var(--text-title); white-space: nowrap; }
.compare-table .mark { color: var(--brand-primary); font-weight: 700; }
.compare-table .dim { color: var(--text-light); }

/* ---------- 定价卡片 ---------- */
.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
.plan {
  background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-lg);
  padding: 36px 30px; display: flex; flex-direction: column; transition: all 0.25s ease;
}
.plan:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.plan.featured { border: 2px solid var(--brand-primary); position: relative; }
.plan-flag {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--brand-primary); color: #fff; font-size: 12px; font-weight: 700;
  padding: 4px 16px; border-radius: 999px; white-space: nowrap;
}
.plan h3 { font-size: 19px; margin-bottom: 6px; }
.plan .plan-sub { font-size: 13px; color: var(--text-light); margin-bottom: 18px; }
.plan .plan-price { font-size: 26px; font-weight: 800; color: var(--brand-deep); margin-bottom: 22px; }
.plan .plan-price small { font-size: 13px; font-weight: 500; color: var(--text-light); }
.plan ul { display: grid; gap: 11px; font-size: 14px; margin-bottom: 28px; flex: 1; }
.plan ul li { padding-left: 26px; position: relative; }
.plan ul li::before {
  content: ""; position: absolute; left: 2px; top: 8px; width: 12px; height: 6px;
  border-left: 2px solid var(--brand-primary); border-bottom: 2px solid var(--brand-primary); transform: rotate(-45deg);
}
.plan .btn { text-align: center; }

/* ---------- FAQ 折叠 ---------- */
.faq-list { max-width: 860px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius); overflow: hidden; }
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 19px 24px; background: none; border: none; text-align: left;
  font-size: 15.5px; font-weight: 600; color: var(--text-title);
}
.faq-q .faq-icon {
  flex: none; width: 22px; height: 22px; border-radius: 50%; position: relative;
  background: rgba(22, 119, 255, 0.10); transition: transform 0.25s ease;
}
.faq-q .faq-icon::before, .faq-q .faq-icon::after {
  content: ""; position: absolute; background: var(--brand-primary);
  top: 50%; left: 50%; transform: translate(-50%, -50%);
}
.faq-q .faq-icon::before { width: 10px; height: 1.6px; }
.faq-q .faq-icon::after { width: 1.6px; height: 10px; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-a { display: none; padding: 0 24px 20px; font-size: 14.5px; }
.faq-item.open .faq-a { display: block; }

/* ---------- 时间线 ---------- */
.timeline { max-width: 860px; margin: 0 auto; position: relative; padding-left: 34px; }
.timeline::before {
  content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px;
  background: linear-gradient(180deg, var(--brand-primary), var(--border-color));
}
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -32px; top: 7px; width: 12px; height: 12px;
  border-radius: 50%; background: #fff; border: 3px solid var(--brand-primary);
}
.tl-year { font-size: 15px; font-weight: 800; color: var(--brand-primary); letter-spacing: 1px; }
.tl-item h3 { font-size: 17px; margin: 6px 0 4px; }
.tl-item p + h3 { margin-top: 30px; } /* 同一年份内多条目标题间距（约一行换行）【修改 · 2026-08-20】 */
.tl-item p { font-size: 14px; }

/* ---------- 资质墙 ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.cert-item {
  background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius);
  padding: 24px; display: flex; gap: 14px; align-items: flex-start; transition: all 0.2s ease;
}
.cert-item:hover { border-color: rgba(22, 119, 255, 0.4); box-shadow: var(--shadow-sm); }
.cert-item i {
  flex: none; width: 34px; height: 34px; border-radius: 8px; margin-top: 2px;
  background: rgba(22, 119, 255, 0.08); position: relative;
}
.cert-item i::after {
  content: ""; position: absolute; left: 11px; top: 12px; width: 12px; height: 6px;
  border-left: 2px solid var(--brand-primary); border-bottom: 2px solid var(--brand-primary); transform: rotate(-45deg);
}
.cert-item b { display: block; font-size: 14.5px; color: var(--text-title); margin-bottom: 3px; }
.cert-item span { font-size: 12.5px; color: var(--text-light); }

/* ---------- 据点卡片 ---------- */
.site-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.site-card { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 28px 24px; transition: all 0.25s ease; }
.site-card:hover { border-color: rgba(22, 119, 255, 0.4); box-shadow: var(--shadow-sm); }
.site-card .s-tag { font-size: 11.5px; color: #69AFFF; background: rgba(22, 119, 255, 0.08); border-radius: 999px; padding: 3px 12px; display: inline-block; margin-bottom: 14px; letter-spacing: 1px; }
.site-card h3 { font-size: 16.5px; margin-bottom: 8px; }
.site-card p { font-size: 13px; color: var(--text-light); }

/* ---------- 场景矩阵（六宫格） ---------- */
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.scene-item { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 26px 24px; transition: all 0.25s ease; }
.scene-item:hover { border-color: rgba(22, 119, 255, 0.4); box-shadow: var(--shadow-sm); transform: translateY(-3px); }
.scene-item h3 { font-size: 16px; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.scene-item h3::before { content: ""; width: 8px; height: 8px; border-radius: 2px; background: var(--brand-primary); flex: none; }
.scene-item p { font-size: 13.5px; }

/* ---------- 能力标签（技术底座） ---------- */
.tech-row { display: grid; gap: 14px; }
.tech-item { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius); padding: 20px 24px; display: flex; gap: 18px; align-items: baseline; }
.tech-item b { flex: none; width: 120px; font-size: 14px; color: var(--brand-primary); }
.tech-item span { font-size: 14px; }

/* ---------- 价值短句带（深色） ---------- */
.quote-band { background: var(--brand-deep); padding: 56px 0; }
.quote-band p { color: #fff; font-size: 22px; font-weight: 700; text-align: center; letter-spacing: 0.5px; }
.quote-band span { display: block; text-align: center; color: rgba(255, 255, 255, 0.6); font-size: 14px; margin-top: 12px; }

/* ---------- 客户之声 testimonial【新增 · 2026-08-17 · 规范 5.7】 ---------- */
.testimonials { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.testimonial {
  background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-lg);
  padding: 34px 28px; display: flex; flex-direction: column; transition: all 0.25s ease;
}
.testimonial:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(22, 119, 255, 0.4); }
.testimonial::before {
  content: "\201C"; display: block; font-size: 44px; line-height: 1;
  color: var(--brand-primary); font-family: Georgia, serif; margin-bottom: 12px;
}
.testimonial blockquote { font-size: 15px; line-height: 1.75; flex: 1; }
.testimonial figcaption { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border-color); font-size: 13px; color: var(--text-light); }
.testimonial figcaption b { display: block; font-size: 14px; color: var(--text-title); margin-bottom: 2px; }

/* ---------- 产品家族四列网格【新增 · 2026-08-17】 ---------- */
.cards-family { grid-template-columns: repeat(4, 1fr); gap: 22px; }
.cards-family .card { padding: 30px 24px; }
.cards-family .card h3 { font-size: 17px; }
.cards-family .card-link { display: inline-block; }
.cards-family p.card-link { color: var(--brand-primary); font-weight: 700; }

/* ---------- 新增组件响应式 ---------- */
@media (max-width: 1199px) {
  .cards-3, .scene-grid, .cert-grid, .plan-grid { grid-template-columns: repeat(2, 1fr); }
  .site-grid { grid-template-columns: repeat(2, 1fr); }
  .page-hero h1 { font-size: 32px; }
  .testimonials, .cards-family { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .cards-3, .scene-grid, .cert-grid, .plan-grid, .site-grid { grid-template-columns: 1fr; }
  .page-hero { padding: 52px 0 46px; }
  .testimonials, .cards-family { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 27px; }
  .tech-item { flex-direction: column; gap: 6px; }
  .tech-item b { width: auto; }
  .quote-band p { font-size: 18px; }
  .plan.featured { margin-top: 13px; }
  .carousel-slide { flex-direction: column; }
  .carousel-cover { flex: none; }
  .carousel-cover img { height: auto; aspect-ratio: 800 / 440; }
  .carousel-body { padding: 28px 24px; }
}

/* ---------- 响应式：平板 ---------- */
@media (max-width: 1199px) {
  :root { --section-spacing: 80px; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; transform: none;
    background: #fff; border-bottom: 1px solid var(--border-color); padding: 18px 24px; gap: 14px;
  }
  .nav-links a.active::after { display: none; }
  .nav-toggle { display: block; margin-left: auto; }
    /* 移动端：NEX 下拉展开为静态列表 */
    .nav-links.open .nav-dropdown { flex-direction: column; align-items: flex-start; gap: 10px; width: 100%; }
    .nav-links.open .nav-drop-btn::after { display: none; }
    .nav-links.open .nav-drop-menu {
      position: static; transform: none; opacity: 1; visibility: visible; pointer-events: auto;
      min-width: 0; width: 100%; box-shadow: none; border: none; background: transparent;
      padding: 0 0 0 12px; gap: 10px;
    }
  .hero-copy h1 { font-size: 48px; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .stat { border-left: none; border-top: 1px solid var(--border-color); }
  .stat:nth-child(-n+3) { border-top: none; }
  .cards, .cards-3, .strengths { grid-template-columns: repeat(2, 1fr); }
  .flagship-inner { flex-direction: column; align-items: stretch; }
  .process-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-inner { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ---------- 响应式：手机 ---------- */
@media (max-width: 767px) {
  :root { --section-spacing: 64px; }
  body { font-size: 15px; }
  .section-head h2 { font-size: 27px; }
  .hero { padding: 56px 0 0; }
  .hero-copy h1 { font-size: 34px; }
  /* 手机端恢复上下结构，避免文案遮挡人物；顶部预留固定页头【改版 · 2026-08-27】 */
  .hero.hero-home { padding: 92px 0 0; }
  .hero.hero-home .hero-inner.hero-center { position: static; padding: 0 0 32px; }
  /* 手机端 KV 图保证可视高度【修改 · 2026-08-27】 */
  .hero-kv { aspect-ratio: auto; height: 300px; }
  .hero.hero-home .hero-kv { height: 300px; } /* 覆盖首屏 100dvh，手机端不拉伸 */
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(-n+3) { border-top: 1px solid var(--border-color); }
  .stat:nth-child(-n+2) { border-top: none; }
  .cards, .cards-3, .strengths, .process-grid { grid-template-columns: 1fr; }
  .carousel-slide { padding: 30px 24px; }
  .case-meta { gap: 20px; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; } /* 合并 develop：手机页尾两栏 */
  .footer-brand, .footer-grid > div:last-child { grid-column: 1 / -1; }
  .filter-bar { justify-content: flex-start; }
  .footer-bottom { flex-direction: column; }
  .nav-cta { display: none; }
  .map-copy { margin-top: 20px; }
  .map-head { margin-bottom: 20px; }
  .map-head h2 { font-size: 24px; letter-spacing: 2px; }
  .map-label { font-size: 10px; letter-spacing: 1px; } /* 手机端地图标签收缩【修改 · 2026-09-03】 */
  .map-label--tokyo { transform: translate(-50%, 12px); } /* 窄屏东京标签改为圆点下方居中，防右溢出【修改 · 2026-09-03】 */
}