/* ==========================================================================
   鸿鲲咖啡工厂 · 官方网站  全站样式
   设计基调：深海军蓝 + 品牌亮蓝，工业科技质感（与企业品牌大图 / logo 同调）
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
/* 色系取自企业品牌大图（蓝调夜景航拍）与 logo 亮蓝，色相统一在 205°–225°：
   深海军蓝 #12283f · 中蓝 #3c5484 · 雾蓝 #849cb4 · 品牌亮蓝 #0d6efd
   深浅层次与对比度均按 WCAG AA 校准（正文 ≥ 4.5:1，大字/UI ≥ 3:1）。 */
:root {
  /* 品牌色 */
  --c-navy: #12283f;         /* 深海军蓝，主色（深色区块 / 页脚 / 遮罩底） */
  --c-navy-2: #1c3550;       /* 次级深蓝，层次变化 */
  --c-blue: #3c5484;         /* 中蓝，取自大图主色 */
  --c-azure: #0d6efd;        /* 品牌亮蓝，强调色（白字对比 4.5:1 ✓） */
  --c-azure-light: #4da3ff;  /* 亮蓝，悬停/高光 */
  --c-mist: #eef3f9;         /* 雾白底，替代奶油底 */
  --c-mist-2: #dce5f0;
  --c-white: #ffffff;

  /* 文字 */
  --t-strong: #0f2035;       /* 深蓝黑（对白底 14:1） */
  --t-body: #3b4a5c;         /* 冷灰蓝正文（对白底 9.0:1） */
  --t-muted: #64748b;        /* 次要文字（对白底 4.8:1 ✓） */
  --t-invert: #f2f6fb;       /* 深底上的冷白 */
  --t-invert-muted: #a8bdd4; /* 深底上的次要文字（对深蓝底 7.6:1 ✓） */

  /* 功能色 */
  --line: #d8e2ee;
  --line-dark: rgba(255, 255, 255, .14);
  --shadow-sm: 0 2px 10px rgba(16, 38, 62, .06);
  --shadow-md: 0 8px 28px rgba(16, 38, 62, .10);
  --shadow-lg: 0 18px 48px rgba(16, 38, 62, .16);

  /* 排版 */
  --f-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC",
            -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --f-serif: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;

  /* 布局 */
  --wrap: 1200px;
  --wrap-narrow: 880px;
  --radius: 4px;
  --radius-lg: 8px;
  --header-h: 84px;

  /* 动效 */
  --ease: cubic-bezier(.4, 0, .2, 1);
  --dur: .38s;
}

/* ---------- 2. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--f-sans);
  font-size: 15px;
  line-height: 1.85;
  color: var(--t-body);
  background: var(--c-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color var(--dur) var(--ease); }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 700; line-height: 1.35; color: var(--t-strong); }
p { margin: 0 0 1em; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }

/* 焦点可见性（无障碍） */
:focus-visible {
  outline: 3px solid var(--c-azure);
  outline-offset: 2px;
  border-radius: 2px;
}

/* 屏幕阅读器专用 */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* 跳转链接 */
.skip-link {
  position: absolute; top: -60px; left: 16px; z-index: 999;
  padding: 10px 18px; background: var(--c-azure); color: #fff;
  border-radius: 0 0 var(--radius) var(--radius); font-weight: 600;
}
.skip-link:focus { top: 0; }

/* ---------- 3. 布局工具 ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.wrap-narrow { width: 100%; max-width: var(--wrap-narrow); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section--tight { padding: 60px 0; }
.section--cream { background: var(--c-mist); }
.section--dark { background: var(--c-navy); color: var(--t-invert); }
.section--dark h2, .section--dark h3 { color: var(--t-invert); }

/* ---------- 4. 区块标题 ---------- */
.sec-head { margin-bottom: 52px; }
.sec-head--center { text-align: center; }

.sec-head .eyebrow {
  display: inline-block;
  font-family: var(--f-serif);
  font-size: 13px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--c-azure); margin-bottom: 10px;
}
.sec-head h2 {
  font-size: 34px; letter-spacing: .02em; position: relative;
}
.sec-head h2 .thin { font-weight: 400; color: var(--t-muted); }
.section--dark .sec-head h2 .thin { color: var(--t-invert-muted); }

.sec-head .desc {
  margin-top: 14px; max-width: 720px; color: var(--t-muted);
  font-size: 15px; line-height: 1.9;
}
.sec-head--center .desc { margin-left: auto; margin-right: auto; }

.sec-head .rule {
  width: 56px; height: 3px; background: var(--c-azure);
  margin-top: 18px; border-radius: 2px;
}
.sec-head--center .rule { margin-left: auto; margin-right: auto; }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 32px; border-radius: var(--radius);
  font-size: 15px; font-weight: 600; letter-spacing: .04em;
  border: 1px solid transparent;
  transition: all var(--dur) var(--ease);
  white-space: nowrap;
}
.btn--azure { background: var(--c-azure); color: #fff; border-color: var(--c-azure); }
.btn--azure:hover { background: var(--c-azure-light); border-color: var(--c-azure-light); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(13, 110, 253, .34); }

.btn--ghost { border-color: var(--line); color: var(--t-body); background: transparent; }
.btn--ghost:hover { border-color: var(--c-azure); color: var(--c-azure); }

.btn--ghost-light { border-color: rgba(255,255,255,.5); color: #fff; background: transparent; }
.btn--ghost-light:hover { background: #fff; color: var(--c-navy); border-color: #fff; }

.btn .arrow { transition: transform var(--dur) var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

/* 文字链接 */
.link-more {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 600; color: var(--c-azure);
}
.link-more::after { content: "\2192"; transition: transform var(--dur) var(--ease); }
.link-more:hover::after { transform: translateX(4px); }

/* ==========================================================================
   6. 页头 / 导航
   ========================================================================== */
.site-topbar {
  background: var(--c-navy);
  color: var(--t-invert-muted);
  font-size: 13px;
  line-height: 38px;
}
.site-topbar .wrap { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.site-topbar a:hover { color: var(--c-azure-light); }
.site-topbar .tb-list { display: flex; gap: 22px; flex-wrap: wrap; }
.site-topbar .tb-list li { display: flex; align-items: center; gap: 6px; }
.site-topbar .tb-tel { color: var(--c-azure-light); font-weight: 600; letter-spacing: .03em; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}
.site-header.is-stuck { box-shadow: var(--shadow-md); background: rgba(255,255,255,.99); }

.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 28px; height: var(--header-h);
}

/* Logo */
.logo { display: flex; align-items: center; gap: 13px; flex-shrink: 0; }
.logo__mark { flex-shrink: 0; width: 46px; height: 46px; }
/* 真实企业 logo（透明 PNG） */
.logo__img { flex-shrink: 0; width: 46px; height: 46px; object-fit: contain; }
/* 深色页脚上垫白色圆角底，保证蓝字 logo 清晰可读 */
.logo__img--chip { background: #fff; border-radius: 10px; padding: 4px; box-sizing: border-box; }
.logo__text { display: flex; flex-direction: column; line-height: 1.2; }
.logo__cn { font-size: 20px; font-weight: 800; letter-spacing: .08em; color: var(--c-navy); }
.logo__en { font-family: var(--f-serif); font-size: 10px; letter-spacing: .2em; color: var(--t-muted); text-transform: uppercase; }

/* 主导航 */
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav > li { position: relative; }
.main-nav > li > a {
  display: block; padding: 0 18px; line-height: var(--header-h);
  font-size: 16px; font-weight: 600; color: var(--t-strong); position: relative;
}
.main-nav > li > a::after {
  content: ""; position: absolute; left: 50%; bottom: 22px;
  width: 0; height: 2px; background: var(--c-azure);
  transform: translateX(-50%); transition: width var(--dur) var(--ease);
}
.main-nav > li > a:hover,
.main-nav > li.is-active > a { color: var(--c-azure); }
.main-nav > li > a:hover::after,
.main-nav > li.is-active > a::after { width: 26px; }

/* 头部动作区 */
.header-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }

/* 汉堡按钮（移动端） */
.nav-toggle {
  display: none; width: 44px; height: 44px;
  align-items: center; justify-content: center; border-radius: var(--radius);
  border: 1px solid var(--line);
}
.nav-toggle span {
  display: block; width: 20px; height: 2px; background: var(--t-strong);
  position: relative; transition: background .2s;
}
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 20px; height: 2px;
  background: var(--t-strong); transition: transform var(--dur) var(--ease);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { transform: translateY(-6px) rotate(-45deg); }

/* ==========================================================================
   7. 首页轮播（Hero）
   ========================================================================== */
/* 高度跟随品牌大图比例（1920:696 = 36.25vw，底部数据条已从图内移除，数据以本站数据条为准），
   保证大图任何桌面宽度下完整显示：右下角二维码不因 cover 裁切被切掉；
   370px 下限防过矮，696px 上限防超宽屏过高 */
.hero { position: relative; height: clamp(370px, 36.25vw, 696px); overflow: hidden; background: var(--c-navy); }
.hero__slides { position: absolute; inset: 0; }
.hero__slide {
  position: absolute; inset: 0; opacity: 0;
  transition: opacity .9s var(--ease);
  display: flex; align-items: center;
}
.hero__slide.is-active { opacity: 1; }
.hero__slide.is-active .hero__content > * { animation: heroIn .9s var(--ease) both; }
.hero__slide.is-active .hero__content > *:nth-child(2) { animation-delay: .12s; }
.hero__slide.is-active .hero__content > *:nth-child(3) { animation-delay: .22s; }
.hero__slide.is-active .hero__content > *:nth-child(4) { animation-delay: .32s; }
@keyframes heroIn {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 背景图（SVG 生成）与遮罩 */
.hero__bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.hero__bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(9, 22, 38, .9) 0%, rgba(9, 22, 38, .72) 42%, rgba(9, 22, 38, .34) 100%);
}
/* 企业品牌大图（自带标语/数据/二维码）：不加遮罩、裁剪位偏上保住顶部标语 */
.hero__bg--photo::after { display: none; }
.hero__bg--photo {
  background-image: url("img/hero-factory.jpg");
  background-position: center 35%;
}
/* 窄屏横向裁切严重、大图上下文字条会被切出残字：换主楼特写裁剪版 */
@media (max-width: 1024px) {
  .hero__bg--photo {
    background-image: url("img/hero-factory-m.jpg");
    background-position: center;
  }
}
.hero__content { position: relative; z-index: 2; color: #fff; max-width: 700px; }
.hero__content .eyebrow {
  display: inline-block; font-family: var(--f-serif); font-size: 13px;
  letter-spacing: .28em; text-transform: uppercase; color: var(--c-azure-light);
  margin-bottom: 16px;
}
.hero__content h1 {
  font-size: 48px; line-height: 1.28; color: #fff; letter-spacing: .01em;
  margin-bottom: 20px;
}
.hero__content h1 em { font-style: normal; color: var(--c-azure-light); }
.hero__content p {
  font-size: 16px; line-height: 1.95; color: rgba(255,255,255,.86);
  max-width: 580px; margin-bottom: 32px;
}
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }

/* 轮播控制 */
.hero__nav {
  position: absolute; left: 50%; bottom: 34px; transform: translateX(-50%);
  z-index: 3; display: flex; gap: 12px; align-items: center;
}
.hero__dot {
  width: 34px; height: 3px; background: rgba(255,255,255,.34);
  border-radius: 2px; transition: background var(--dur) var(--ease), width var(--dur) var(--ease);
}
.hero__dot.is-active { background: var(--c-azure); width: 52px; }

.hero__arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
  width: 48px; height: 48px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.34); color: #fff;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--dur) var(--ease);
}
.hero__arrow:hover { background: var(--c-azure); border-color: var(--c-azure); }
.hero__arrow--prev { left: 32px; }
.hero__arrow--next { right: 32px; }

/* 首页数据条（贴在轮播下方） */
.stat-bar {
  background: var(--c-navy-2);
  border-bottom: 1px solid var(--line-dark);
}
.stat-bar__grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
}
.stat-bar__item {
  padding: 32px 20px; text-align: center; color: var(--t-invert);
  border-right: 1px solid var(--line-dark);
}
.stat-bar__item:last-child { border-right: 0; }
.stat-bar__num {
  font-family: var(--f-serif); font-size: 40px; font-weight: 700;
  color: var(--c-azure-light); line-height: 1;
}
.stat-bar__num small { font-size: 18px; margin-left: 3px; }
.stat-bar__label { margin-top: 10px; font-size: 14px; color: var(--t-invert-muted); letter-spacing: .05em; }

/* ==========================================================================
   8. 通用卡片 / 网格
   ========================================================================== */
.grid { display: grid; gap: 28px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--c-white); border: 1px solid var(--line);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card__media { aspect-ratio: 4 / 3; overflow: hidden; background: var(--c-mist-2); }
.card__media img, .card__media svg { width: 100%; height: 100%; object-fit: cover; display: block; }
.card__body { padding: 24px 26px 28px; }
.card__body h3 { font-size: 19px; margin-bottom: 10px; }
.card__body p { font-size: 14px; color: var(--t-muted); margin-bottom: 16px; line-height: 1.85; }

/* 优势卡（无图，图标在上） */
.feature {
  padding: 34px 30px; background: var(--c-white);
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  transition: all var(--dur) var(--ease);
}
.feature:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.feature__icon {
  width: 56px; height: 56px; border-radius: var(--radius);
  background: var(--c-mist); display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; color: var(--c-azure);
}
.feature h3 { font-size: 18px; margin-bottom: 10px; }
.feature p { font-size: 14px; color: var(--t-muted); margin: 0; line-height: 1.85; }

/* ==========================================================================
   9. 关于我们（图文左右）
   ========================================================================== */
.split {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.split--reverse .split__media { order: 2; }
.split__media { position: relative; }
.split__media img, .split__media svg { width: 100%; border-radius: var(--radius-lg); display: block; }
.split__media .badge {
  position: absolute; right: -18px; bottom: -18px;
  background: var(--c-azure); color: #fff; padding: 20px 26px;
  border-radius: var(--radius-lg); text-align: center; box-shadow: var(--shadow-lg);
}
.split__media .badge strong { display: block; font-family: var(--f-serif); font-size: 32px; line-height: 1; }
.split__media .badge span { font-size: 12.5px; letter-spacing: .08em; opacity: .92; }

.split__body h2 { font-size: 32px; margin-bottom: 18px; }
.split__body p { color: var(--t-body); margin-bottom: 16px; }
.split__body .intro-lead {
  font-size: 16px; color: var(--t-strong); font-weight: 500;
  border-left: 3px solid var(--c-azure); padding-left: 16px; margin-bottom: 22px;
}

/* 要点清单 */
.tick-list { margin: 24px 0 30px; display: grid; gap: 12px; }
.tick-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 14.5px; }
.tick-list li::before {
  content: ""; flex-shrink: 0; width: 18px; height: 18px; margin-top: 4px;
  background: var(--c-azure); border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-size: 12px; background-repeat: no-repeat; background-position: center;
}

/* ==========================================================================
   10. 新闻 / 动态
   ========================================================================== */
.news-item {
  display: grid; grid-template-columns: 96px 1fr auto; gap: 26px; align-items: center;
  padding: 26px 0; border-bottom: 1px solid var(--line);
  transition: padding-left var(--dur) var(--ease);
}
.news-item:first-child { border-top: 1px solid var(--line); }
.news-item:hover { padding-left: 10px; }
.news-item__date {
  text-align: center; border-right: 1px solid var(--line); padding-right: 22px;
}
.news-item__date strong {
  display: block; font-family: var(--f-serif); font-size: 30px;
  color: var(--c-azure); line-height: 1;
}
.news-item__date span { font-size: 12px; color: var(--t-muted); letter-spacing: .05em; }
.news-item__body h3 { font-size: 17px; margin-bottom: 6px; transition: color var(--dur) var(--ease); }
.news-item:hover .news-item__body h3 { color: var(--c-azure); }
.news-item__body p { font-size: 13.5px; color: var(--t-muted); margin: 0; }
.news-item__more { color: var(--c-azure); font-size: 22px; line-height: 1; }

/* ==========================================================================
   11. 页脚
   ========================================================================== */
.site-footer { background: var(--c-navy); color: var(--t-invert-muted); font-size: 14px; }
.site-footer__main {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 44px;
  padding: 64px 0 48px;
}
.site-footer h3 {
  font-size: 16px; color: var(--t-invert); margin-bottom: 20px;
  position: relative; padding-bottom: 12px;
}
.site-footer h3::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 30px; height: 2px; background: var(--c-azure-light);
}
.site-footer a:hover { color: var(--c-azure-light); }
.site-footer .f-links { display: grid; gap: 10px; }
.site-footer .f-about p { line-height: 1.9; margin-bottom: 18px; }
.site-footer .f-contact { display: grid; gap: 14px; }
.site-footer .f-contact li { display: flex; gap: 10px; align-items: flex-start; line-height: 1.75; }
.site-footer .f-contact svg { flex-shrink: 0; margin-top: 4px; color: var(--c-azure-light); }
.site-footer .f-tel { font-family: var(--f-serif); font-size: 22px; color: var(--c-azure-light); font-weight: 700; }

.site-footer__bottom {
  border-top: 1px solid var(--line-dark); padding: 22px 0;
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
  font-size: 13px;
}
.site-footer__bottom .fb-links { display: flex; gap: 20px; flex-wrap: wrap; }

/* 备案信息 */
.icp { display: flex; gap: 18px; flex-wrap: wrap; font-size: 12.5px; }
.icp a { color: var(--t-invert-muted); }
.icp a:hover { color: var(--c-azure-light); }

/* ==========================================================================
   12. 内页英雄条
   ========================================================================== */
.page-hero {
  position: relative; padding: 90px 0 74px; background: var(--c-navy);
  color: #fff; overflow: hidden;
}
.page-hero__bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .34; }
.page-hero .wrap { position: relative; z-index: 2; }
.page-hero h1 { font-size: 38px; color: #fff; margin-bottom: 12px; }
.page-hero p { color: rgba(255,255,255,.82); max-width: 680px; margin: 0; font-size: 15px; }

/* 面包屑 */
.breadcrumb {
  display: flex; gap: 10px; align-items: center; font-size: 13px;
  color: rgba(255,255,255,.68); margin-bottom: 16px;
}
.breadcrumb a:hover { color: var(--c-azure-light); }
.breadcrumb .sep { opacity: .5; }

/* ==========================================================================
   13. 内页内容组件
   ========================================================================== */
/* 产品分类筛选 */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 40px; }
.filter-btn {
  padding: 9px 24px; border: 1px solid var(--line); border-radius: 999px;
  font-size: 14.5px; color: var(--t-body); background: var(--c-white);
  transition: all var(--dur) var(--ease);
}
.filter-btn:hover { border-color: var(--c-azure); color: var(--c-azure); }
.filter-btn.is-active { background: var(--c-azure); border-color: var(--c-azure); color: #fff; font-weight: 600; }

/* 筛选无结果提示 */
.filter-empty {
  text-align: center; color: var(--t-muted); font-size: 15px;
  padding: 48px 0; margin: 0;
}
.filter-empty::before {
  content: ""; display: block; width: 44px; height: 3px;
  background: var(--line); border-radius: 2px; margin: 0 auto 20px;
}

/* 产品卡 */
.product-card { background: var(--c-white); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; transition: all var(--dur) var(--ease); }
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); border-color: transparent; }
.product-card__media { aspect-ratio: 1 / 1; background: var(--c-mist); overflow: hidden; }
.product-card__media svg { width: 100%; height: 100%; display: block; }
.product-card__body { padding: 22px 24px 26px; }
.product-card__tag {
  display: inline-block; font-size: 12px; letter-spacing: .06em;
  color: var(--c-azure); background: rgba(13, 110, 253, .1);
  padding: 3px 10px; border-radius: 3px; margin-bottom: 12px;
}
.product-card__body h3 { font-size: 18px; margin-bottom: 8px; }
.product-card__body p { font-size: 13.5px; color: var(--t-muted); margin-bottom: 14px; }
.product-card__spec { font-size: 13px; color: var(--t-body); display: grid; gap: 6px; margin: 0; }
.product-card__spec li { display: flex; gap: 8px; }
.product-card__spec b { color: var(--t-muted); font-weight: 400; flex-shrink: 0; min-width: 52px; }

/* 时间线（发展历程） */
.timeline { position: relative; padding-left: 34px; }
.timeline::before {
  content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px;
  width: 2px; background: var(--line);
}
.timeline li { position: relative; padding-bottom: 34px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: ""; position: absolute; left: -34px; top: 7px;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--c-white); border: 3px solid var(--c-azure);
}
.timeline .tl-year {
  font-family: var(--f-serif); font-size: 22px; font-weight: 700;
  color: var(--c-azure); line-height: 1; margin-bottom: 8px;
}
.timeline .tl-title { font-size: 16px; font-weight: 700; color: var(--t-strong); margin-bottom: 6px; }
.timeline .tl-desc { font-size: 14px; color: var(--t-muted); margin: 0; }

/* 资质证照 */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.cert {
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 28px 22px; text-align: center; background: var(--c-white);
  transition: all var(--dur) var(--ease);
}
.cert:hover { border-color: var(--c-azure); box-shadow: var(--shadow-md); }
.cert svg { margin: 0 auto 14px; color: var(--c-azure); }
.cert strong { display: block; font-size: 15px; color: var(--t-strong); margin-bottom: 6px; }
.cert span { font-size: 12.5px; color: var(--t-muted); }

/* 联系页布局 */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; align-items: start; }

.info-list { display: grid; gap: 26px; }
.info-list li { display: flex; gap: 16px; align-items: flex-start; }
.info-list .ic {
  flex-shrink: 0; width: 46px; height: 46px; border-radius: var(--radius);
  background: var(--c-mist); display: flex; align-items: center; justify-content: center;
  color: var(--c-azure);
}
.info-list h3 { font-size: 15px; margin-bottom: 4px; }
.info-list p { margin: 0; font-size: 14px; color: var(--t-muted); line-height: 1.8; }
.info-list .big { font-family: var(--f-serif); font-size: 22px; font-weight: 700; color: var(--c-azure); }

/* 表单 */
.form { background: var(--c-mist); border-radius: var(--radius-lg); padding: 36px; }
.form h3 { font-size: 20px; margin-bottom: 6px; }
.form .form-sub { font-size: 13.5px; color: var(--t-muted); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; color: var(--t-strong); margin-bottom: 8px; }
.field label .req { color: #c0392b; }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 15px; background: var(--c-white);
  border: 1px solid var(--line); border-radius: var(--radius);
  font-size: 14.5px; transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.field textarea { min-height: 128px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--c-azure);
  box-shadow: 0 0 0 3px rgba(13, 110, 253, .16);
}
.field .err { display: none; font-size: 12.5px; color: #c0392b; margin-top: 6px; }
.field.has-error input, .field.has-error textarea { border-color: #c0392b; }
.field.has-error .err { display: block; }

.form-note {
  margin-top: 22px; padding: 14px 18px; border-radius: var(--radius);
  font-size: 14px; display: none;
}
.form-note.is-ok { display: block; background: rgba(60, 140, 80, .1); border: 1px solid rgba(60, 140, 80, .34); color: #2c6b3e; }
.form-note.is-err { display: block; background: rgba(192, 57, 43, .08); border: 1px solid rgba(192, 57, 43, .3); color: #a7301f; }

/* 地图占位 */
.map-box {
  border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden;
  background: var(--c-mist); height: 340px; position: relative;
}
.map-box svg { width: 100%; height: 100%; display: block; }

/* ==========================================================================
   14. CTA 条
   ========================================================================== */
.cta-band {
  background: linear-gradient(120deg, var(--c-navy) 0%, var(--c-blue) 100%);
  color: #fff; padding: 66px 0;
}
.cta-band .wrap { display: flex; align-items: center; justify-content: space-between; gap: 36px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; font-size: 30px; margin-bottom: 10px; }
.cta-band p { color: rgba(255,255,255,.82); margin: 0; max-width: 620px; }

/* ==========================================================================
   15. 进场动效（滚动显现）
   ========================================================================== */
[data-reveal] {
  opacity: 0; transform: translateY(26px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
[data-reveal].is-in { opacity: 1; transform: none; }

/* ==========================================================================
   16. 返回顶部
   ========================================================================== */
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 90;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--c-azure); color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: all var(--dur) var(--ease);
}
.to-top.is-show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--c-blue); }

/* ==========================================================================
   17. 响应式
   ========================================================================== */
@media (max-width: 1180px) {
  .split { gap: 44px; }
  .site-footer__main { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 1024px) {
  :root { --header-h: 72px; }

  .main-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--c-white); border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
    max-height: 0; overflow: hidden; transition: max-height var(--dur) var(--ease);
  }
  .main-nav.is-open { max-height: 70vh; overflow-y: auto; }
  .main-nav > li > a {
    line-height: 1.5; padding: 16px 24px; border-bottom: 1px solid var(--line);
  }
  .main-nav > li > a::after { display: none; }

  .nav-toggle { display: flex; }
  .header-actions .btn { display: none; }

  .hero { height: 560px; }
  .hero__content h1 { font-size: 38px; }
  .hero__arrow { display: none; }

  .stat-bar__grid { grid-template-columns: repeat(2, 1fr); }
  .stat-bar__item:nth-child(2) { border-right: 0; }
  .stat-bar__item:nth-child(1), .stat-bar__item:nth-child(2) { border-bottom: 1px solid var(--line-dark); }

  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }

  .split { grid-template-columns: 1fr; gap: 36px; }
  .split--reverse .split__media { order: 0; }
  .split__media .badge { right: 16px; bottom: 16px; }

  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 720px) {
  body { font-size: 14.5px; }
  .section { padding: 60px 0; }
  .sec-head { margin-bottom: 36px; }
  .sec-head h2 { font-size: 26px; }

  .site-topbar { display: none; }
  .wrap, .wrap-narrow { padding: 0 18px; }

  .hero { height: 520px; }
  .hero__content h1 { font-size: 29px; line-height: 1.36; }
  .hero__content p { font-size: 14.5px; }
  .hero__cta { gap: 10px; }
  .hero__cta .btn { padding: 12px 22px; font-size: 14px; }
  .hero__nav { bottom: 22px; }

  .logo__mark { width: 40px; height: 40px; }
  .logo__cn { font-size: 18px; }

  .grid--4, .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .grid { gap: 22px; }
  .cert-grid { grid-template-columns: 1fr; }

  .page-hero { padding: 56px 0 48px; }
  .page-hero h1 { font-size: 27px; }

  .news-item { grid-template-columns: 1fr; gap: 12px; }
  .news-item__date { border-right: 0; padding-right: 0; text-align: left; display: flex; align-items: baseline; gap: 8px; }
  .news-item__date strong { font-size: 22px; }
  .news-item__more { display: none; }

  .split__media .badge { padding: 16px 20px; }
  .split__media .badge strong { font-size: 26px; }

  .form { padding: 26px 20px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }

  .site-footer__main { grid-template-columns: 1fr; gap: 34px; padding: 46px 0 34px; }
  .site-footer__bottom { justify-content: flex-start; }

  .cta-band { padding: 50px 0; }
  .cta-band h2 { font-size: 23px; }
  .cta-band .btn { width: 100%; justify-content: center; }
  .to-top { right: 16px; bottom: 16px; width: 42px; height: 42px; }
}

/* ---------- 微信二维码 ---------- */
/* 联系页的微信咨询卡片 */
.qr-card {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 30px;
  padding: 20px;
  background: var(--c-white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.qr-card__img {
  flex: 0 0 auto;
  width: 134px;
  height: 134px;
  padding: 8px;
  background: var(--c-white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

/* 二维码务必是独立的 <img>：手机长按才能识别；
   不要改成 background-image 或合成进大图，否则长按识别会失效 */
.qr-card__img img {
  display: block;
  width: 100%;
  height: 100%;
}

.qr-card__txt h3 {
  margin: 0 0 6px;
  font-size: 19px;
  color: var(--t-strong);
}

.qr-card__txt p {
  margin: 0 0 6px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--t-muted);
}

.qr-card__tip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  color: var(--c-azure);
}

.qr-card__tip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-azure);
}

/* 页脚的小二维码 */
.f-qr {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--line-dark);
}

.f-qr img {
  flex: 0 0 auto;
  width: 100px;
  height: 100px;
  padding: 6px;
  background: var(--c-white);
  border-radius: var(--radius-lg);
}

.f-qr span {
  font-size: 13px;
  line-height: 1.6;
  color: var(--t-invert-muted);
}

@media (max-width: 720px) {
  .qr-card { flex-direction: column; align-items: flex-start; gap: 14px; padding: 18px; }
  .qr-card__img { width: 118px; height: 118px; }
  .f-qr img { width: 92px; height: 92px; }
}

/* 打印 */
@media print {
  .site-header, .site-topbar, .to-top, .hero__arrow, .hero__nav, .cta-band, .site-footer { display: none; }
  body { color: #000; }
  .section { padding: 20px 0; }
}

/* 尊重系统减弱动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}