/* ============================================================
   山西冠标检验检测技术服务有限公司 - 官网样式
   设计：权威可信（深蓝） + 环保合规（绿）
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
  --primary:        #0d3b66;   /* 主色：技术/权威 */
  --primary-700:    #0a2f52;
  --primary-600:    #125684;
  --primary-500:    #1b6aa3;
  --accent:         #0fae6e;   /* 强调色：环保合规 */
  --accent-700:     #0b8a56;
  --accent-050:     #e7f7ef;

  --ink:            #16242f;   /* 正文 */
  --muted:          #51606e;   /* 次要文字 */
  --line:           #dce6ef;   /* 分割线 */
  --bg:             #f6f9fc;   /* 页面底色（非纯白） */
  --bg-soft:        #eef3f8;
  --white:          #ffffff;

  --shadow-sm: 0 1px 2px rgba(13,59,102,.06), 0 1px 3px rgba(13,59,102,.05);
  --shadow-md: 0 4px 6px rgba(13,59,102,.05), 0 10px 24px rgba(13,59,102,.08);
  --shadow-lg: 0 12px 32px rgba(10,47,82,.14);

  --radius: 12px;
  --radius-lg: 18px;

  --container: 1200px;

  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans CN", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

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

/* ---------- 排版 ---------- */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; color: var(--primary-700); }
.eyebrow {
  display: inline-block;
  font-size: .8rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent-700);
  font-weight: 700;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: 16px;
}
.section-intro {
  color: var(--muted);
  max-width: 60ch;
  font-size: 1.05rem;
}
.section-head { margin-bottom: 48px; }
.section-head::after { /* 小色条 */
  content: "";
  display: block;
  width: 56px;
  height: 4px;
  border-radius: 4px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--accent), var(--primary-500));
}

/* ---------- 通用区块 ---------- */
section { padding: 84px 0; }
.section-soft { background: var(--white); }
.bg-gradient-soft {
  background:
    radial-gradient(1100px 480px at 100% -10%, rgba(15,174,110,.08), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(13,59,102,.07), transparent 60%),
    var(--bg);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 20px rgba(15,174,110,.35);
}
.btn-accent:hover { background: var(--accent-700); transform: translateY(-2px); }
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 20px rgba(13,59,102,.3);
}
.btn-primary:hover { background: var(--primary-700); transform: translateY(-2px); }
.btn-ghost {
  background: rgba(255,255,255,.1);
  color: #fff;
  border: 1.5px solid rgba(255,255,255,.55);
}
.btn-ghost:hover { background: rgba(255,255,255,.2); transform: translateY(-2px); }
.btn-outline {
  border: 1.5px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

/* ============================================================
   顶部公告条
   ============================================================ */
.topbar {
  background: var(--primary-700);
  color: #cfe0ef;
  font-size: .82rem;
  letter-spacing: .02em;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 38px;
  gap: 16px;
}
.topbar a { color: #fff; font-weight: 600; }
.topbar .topbar-right { display: flex; gap: 20px; align-items: center; }
.topbar .dot { color: var(--accent); }

/* ============================================================
   导航头部
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s ease;
}
.header.scrolled { box-shadow: var(--shadow-md); }
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
/* Logo */
.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark {
  width: 44px; height: 44px;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--primary), var(--primary-600));
  display: grid; place-items: center;
  color: #fff;
  box-shadow: 0 6px 14px rgba(13,59,102,.3);
  flex: none;
}
.logo-mark svg { width: 26px; height: 26px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-text strong { font-size: 1.12rem; color: var(--primary-700); letter-spacing: .02em; }
.logo-text span { font-size: .68rem; color: var(--muted); letter-spacing: .14em; }

/* 导航链接 */
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  padding: 10px 16px;
  border-radius: 8px;
  font-size: .96rem;
  font-weight: 600;
  color: var(--ink);
  transition: color .15s, background .15s;
}
.nav-links a:hover { color: var(--primary); background: var(--bg-soft); }
.nav-links a.active { color: var(--primary); }
.nav-links a.active::after {
  content: ""; display: block; height: 3px; width: 22px; margin: 4px auto -6px;
  border-radius: 3px; background: var(--accent);
}
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-phone {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; color: var(--primary-700);
}
.nav-phone svg { width: 18px; height: 18px; color: var(--accent); }
.nav-phone .num { font-size: 1.05rem; }

/* 汉堡按钮 */
.nav-toggle { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; border-radius: 8px; }
.nav-toggle span {
  position: relative; width: 22px; height: 2px; background: var(--primary-700); border-radius: 2px;
  transition: transform .25s, opacity .25s;
}
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 22px; height: 2px; background: var(--primary-700); border-radius: 2px;
  transition: transform .25s, top .25s;
}
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(7,42,74,.92) 0%, rgba(13,59,102,.9) 55%, rgba(18,86,132,.85) 100%),
    radial-gradient(600px 300px at 80% 20%, rgba(15,174,110,.25), transparent 70%);
  overflow: hidden;
}
.hero::before { /* 网格纹理 */
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 30% 30%, #000 30%, transparent 75%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.3fr .9fr;
  gap: 56px;
  align-items: center;
  padding: 96px 0 104px;
}
.hero .eyebrow { color: #7fe0bb; }
.hero h1 {
  color: #fff;
  font-size: clamp(2rem, 4.6vw, 3.4rem);
  letter-spacing: -.01em;
  margin-bottom: 20px;
}
.hero h1 .hl { color: #7fe0bb; }
.hero-sub {
  font-size: 1.18rem;
  color: #d4e3f0;
  max-width: 30ch;
  margin-bottom: 32px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 28px; }
.tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px; border-radius: 50px;
  font-size: .85rem; font-weight: 600;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
}
.tag .pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 0 rgba(15,174,110,.6); animation: pulse 2s infinite; }

/* Hero 右侧联系卡 */
.hero-card {
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--radius-lg);
  padding: 30px;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-lg);
}
.hero-card h3 { color: #fff; font-size: 1.2rem; margin-bottom: 18px; }
.hero-card .label { color: #aecbe6; font-size: .82rem; letter-spacing: .1em; text-transform: uppercase; }
.hero-card .big-num {
  font-size: 2rem; font-weight: 800; color: #fff; letter-spacing: .02em;
  margin: 4px 0 18px; line-height: 1;
}
.hero-card .big-num a { color: #fff; }
.hero-card .meta { display: flex; flex-direction: column; gap: 10px; color: #cfe0ef; font-size: .92rem; }
.hero-card .meta div { display: flex; gap: 8px; align-items: center; }
.hero-card .meta svg { width: 16px; height: 16px; color: #7fe0bb; flex: none; }

/* ============================================================
   服务卡片
   ============================================================ */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 34px;
  transition: transform .2s ease, box-shadow .25s ease, border-color .2s;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 4px; width: 0;
  background: linear-gradient(90deg, var(--accent), var(--primary-500));
  transition: width .3s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card:hover::before { width: 100%; }
.card-icon {
  width: 60px; height: 60px; border-radius: 14px;
  display: grid; place-items: center; margin-bottom: 22px;
  background: linear-gradient(135deg, var(--primary), var(--primary-600));
  color: #fff;
}
.card-icon.green { background: linear-gradient(135deg, var(--accent-700), var(--accent)); }
.card-icon svg { width: 32px; height: 32px; }
.card h3 { font-size: 1.3rem; margin-bottom: 10px; }
.card p { color: var(--muted); margin-bottom: 18px; }
.card .more {
  display: inline-flex; align-items: center; gap: 6px;
  font-weight: 700; color: var(--primary);
}
.card .more svg { width: 16px; height: 16px; transition: transform .2s; }
.card:hover .more svg { transform: translateX(4px); }

/* ============================================================
   亮点 / 优势
   ============================================================ */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature { text-align: left; }
.feature-icon {
  width: 52px; height: 52px; border-radius: 12px;
  display: grid; place-items: center; margin-bottom: 18px;
  background: var(--accent-050); color: var(--accent-700);
}
.feature-icon svg { width: 26px; height: 26px; }
.feature h4 { font-size: 1.08rem; margin-bottom: 8px; }
.feature p { color: var(--muted); font-size: .95rem; }

/* 数字统计 */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  text-align: center;
}
.stat .num { font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800; color: var(--primary); line-height: 1; }
.stat .num .unit { font-size: 1.2rem; color: var(--accent-700); }
.stat .cap { margin-top: 8px; color: var(--muted); font-size: .92rem; }

/* ============================================================
   资质预览
   ============================================================ */
.cert-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cert-chip {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  text-align: center;
  transition: transform .2s, box-shadow .2s;
}
.cert-chip:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.cert-chip .badge {
  width: 46px; height: 46px; border-radius: 50%; margin: 0 auto 12px;
  display: grid; place-items: center;
  background: var(--accent-050); color: var(--accent-700);
}
.cert-chip .badge svg { width: 24px; height: 24px; }
.cert-chip h4 { font-size: 1rem; }
.cert-chip p { font-size: .8rem; color: var(--muted); margin-top: 4px; }

/* ============================================================
   检测流程
   ============================================================ */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.step {
  position: relative; padding: 28px 24px;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg);
}
.step .step-num {
  counter-increment: step;
  font-size: .8rem; font-weight: 800; color: var(--accent-700); letter-spacing: .1em;
}
.step .step-num::before { content: "0" counter(step); }
.step h4 { font-size: 1.1rem; margin: 10px 0 8px; }
.step p { color: var(--muted); font-size: .92rem; }
.step::after {
  content: "→"; position: absolute; right: -18px; top: 50%; transform: translateY(-50%);
  color: var(--line); font-size: 1.4rem;
}
.step:last-child::after { display: none; }

/* ============================================================
   CTA 条
   ============================================================ */
.cta-band {
  background: linear-gradient(135deg, var(--primary-700), var(--primary-600));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 48px;
  display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap;
  position: relative; overflow: hidden;
}
.cta-band::after {
  content: ""; position: absolute; right: -60px; top: -60px; width: 240px; height: 240px; border-radius: 50%;
  background: radial-gradient(circle, rgba(15,174,110,.35), transparent 70%);
}
.cta-band h2 { color: #fff; font-size: clamp(1.5rem,3vw,2.1rem); margin-bottom: 8px; }
.cta-band p { color: #cfe0ef; }
.cta-band .btns { display: flex; gap: 14px; flex-wrap: wrap; position: relative; z-index: 1; }

/* ============================================================
   页脚
   ============================================================ */
.footer {
  background: var(--primary-700);
  color: #aecbe6;
  padding: 64px 0 0;
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.footer h5 { color: #fff; font-size: 1rem; margin-bottom: 18px; letter-spacing: .04em; }
.footer .f-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.footer .f-logo .logo-mark { width: 40px; height: 40px; }
.footer .f-logo strong { color: #fff; font-size: 1.05rem; display: block; }
.footer .f-logo span { font-size: .7rem; color: #8fb0cf; letter-spacing: .12em; }
.footer .f-about { font-size: .9rem; line-height: 1.8; max-width: 36ch; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: #aecbe6; font-size: .92rem; transition: color .15s; }
.footer-links a:hover { color: #fff; }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 14px; font-size: .92rem; }
.footer-contact svg { width: 16px; height: 16px; color: #7fe0bb; flex: none; margin-top: 4px; }
.footer-contact a { color: #fff; font-weight: 600; }
.footer-bottom {
  padding: 22px 0;
  display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
  font-size: .82rem; color: #8fb0cf;
}
.footer-bottom .links { display: flex; gap: 16px; }
.footer-bottom .links a:hover { color: #fff; }
.footer-bottom .icp a:hover { color: #fff; }

/* 浮动拨号按钮（移动端） */
.float-call {
  display: none;
  position: fixed; right: 18px; bottom: 18px; z-index: 90;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--accent); color: #fff;
  align-items: center; justify-content: center;
  box-shadow: 0 10px 24px rgba(15,174,110,.45);
}
.float-call svg { width: 26px; height: 26px; }
.float-call::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid var(--accent); animation: ripple 2.4s infinite;
}

/* ============================================================
   内页小标题（banner）
   ============================================================ */
.page-banner {
  background:
    linear-gradient(135deg, rgba(7,42,74,.93), rgba(18,86,132,.88)),
    radial-gradient(500px 280px at 85% 30%, rgba(15,174,110,.25), transparent 70%);
  color: #fff;
  position: relative; overflow: hidden;
}
.page-banner::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 70% 40%, #000 25%, transparent 80%);
}
.page-banner .container { position: relative; padding: 64px 24px; }
.page-banner .eyebrow { color: #7fe0bb; }
.page-banner h1 { color: #fff; font-size: clamp(1.8rem, 3.6vw, 2.6rem); }
.page-banner p { color: #cfe0ef; margin-top: 12px; max-width: 50ch; }
.breadcrumb { margin-top: 18px; font-size: .85rem; color: #8fb0cf; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { margin: 0 8px; opacity: .6; }

/* ============================================================
   通用内容块
   ============================================================ */
.prose { max-width: 70ch; color: var(--ink); }
.prose p { margin-bottom: 1rem; color: #3c4a57; }
.prose h3 { margin: 1.6rem 0 .6rem; font-size: 1.2rem; }
.prose ul.bullets { list-style: none; margin: 1rem 0; }
.prose ul.bullets li { position: relative; padding-left: 28px; margin-bottom: 10px; color: #3c4a57; }
.prose ul.bullets li::before {
  content: ""; position: absolute; left: 0; top: 9px; width: 14px; height: 14px; border-radius: 4px;
  background: linear-gradient(135deg, var(--accent), var(--primary-500));
}

/* 两栏布局 */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.split.reverse .left { order: 2; }

/* 信息卡（关于/服务详情） */
.info-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 36px; box-shadow: var(--shadow-sm);
}
.info-card h3 { margin-bottom: 8px; }
.info-card .lead { color: var(--muted); margin-bottom: 22px; }

/* 资质证书展示 */
.cert-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.cert {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform .2s, box-shadow .2s;
}
.cert:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.cert .cert-face {
  aspect-ratio: 4 / 3;
  background:
    linear-gradient(135deg, var(--primary-700), var(--primary-600));
  position: relative; display: grid; place-items: center; color: #fff; text-align: center; padding: 20px;
}
.cert .cert-face::before {
  content: ""; position: absolute; inset: 14px; border: 2px dashed rgba(255,255,255,.4); border-radius: 8px;
}
.cert .cert-face .seal {
  width: 60px; height: 60px; border-radius: 50%; border: 3px solid rgba(255,255,255,.8);
  display: grid; place-items: center; margin-bottom: 12px; color: #7fe0bb;
}
.cert .cert-face .seal svg { width: 30px; height: 30px; }
.cert .cert-face .t { font-weight: 700; font-size: 1.05rem; position: relative; }
.cert .cert-face .s { font-size: .78rem; color: #aecbe6; margin-top: 6px; position: relative; }
.cert .cert-body { padding: 18px 20px; }
.cert .cert-body h4 { font-size: 1rem; }
.cert .cert-body p { font-size: .84rem; color: var(--muted); margin-top: 4px; }

/* 新闻列表 */
.news-list { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.news-item {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; transition: transform .2s, box-shadow .2s, border-color .2s;
}
.news-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: transparent; }
.news-item .meta { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.news-item .cat {
  font-size: .74rem; font-weight: 700; letter-spacing: .04em; padding: 4px 10px; border-radius: 50px;
  background: var(--accent-050); color: var(--accent-700);
}
.news-item .cat.blue { background: #e7f0f9; color: var(--primary); }
.news-item .date { font-size: .82rem; color: var(--muted); }
.news-item h3 { font-size: 1.1rem; margin-bottom: 8px; transition: color .15s; }
.news-item:hover h3 { color: var(--primary); }
.news-item p { color: var(--muted); font-size: .92rem; }

/* 联系页 */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info .item { display: flex; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.contact-info .item:last-child { border-bottom: none; }
.contact-info .ic {
  width: 48px; height: 48px; border-radius: 12px; flex: none;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-600)); color: #fff;
}
.contact-info .ic svg { width: 22px; height: 22px; }
.contact-info .ic.green { background: linear-gradient(135deg, var(--accent-700), var(--accent)); }
.contact-info .l { font-size: .82rem; color: var(--muted); }
.contact-info .v { font-size: 1.12rem; font-weight: 700; color: var(--primary-700); }
.contact-info .v a { color: var(--primary-700); }
.contact-form { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow-sm); }
.contact-form h3 { margin-bottom: 6px; }
.contact-form .lead { color: var(--muted); font-size: .92rem; margin-bottom: 22px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: .86rem; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 14px; font: inherit; color: var(--ink);
  background: var(--bg); border: 1px solid var(--line); border-radius: 10px;
  transition: border-color .15s, box-shadow .15s;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--primary-500); box-shadow: 0 0 0 3px rgba(27,106,163,.15);
}
.form-note { font-size: .78rem; color: var(--muted); margin-top: 10px; }
.map-box {
  margin-top: 36px; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line);
  background: var(--bg-soft);
  display: grid; place-items: center; min-height: 320px; color: var(--muted); text-align: center; padding: 24px;
}
.map-box svg { width: 48px; height: 48px; color: var(--primary-500); margin-bottom: 12px; }

/* FAQ */
.faq { max-width: 820px; margin: 0 auto; }
.faq-item { border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); margin-bottom: 14px; overflow: hidden; }
.faq-q {
  width: 100%; text-align: left; padding: 20px 24px; font-weight: 700; color: var(--primary-700);
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq-q .ic { width: 24px; height: 24px; flex: none; color: var(--accent-700); transition: transform .25s; }
.faq-item.open .faq-q .ic { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a .inner { padding: 0 24px 22px; color: var(--muted); }

/* ============================================================
   动画
   ============================================================ */
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(15,174,110,.6); }
  70% { box-shadow: 0 0 0 8px rgba(15,174,110,0); }
  100% { box-shadow: 0 0 0 0 rgba(15,174,110,0); }
}
@keyframes ripple {
  0% { transform: scale(1); opacity: .7; }
  100% { transform: scale(1.8); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 36px; padding: 72px 0 80px; }
  .features { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .cert-strip { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step::after { display: none; }
  .cert-gallery { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 860px) {
  .nav-links, .nav-phone { display: none; }
  .nav-toggle { display: flex; }
  .nav-actions .btn { display: none; }
  /* 移动端展开菜单 */
  .nav.open .nav-links {
    display: flex; flex-direction: column; align-items: stretch; gap: 0;
    position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow-md);
    padding: 8px 0;
  }
  .nav.open .nav-links a { padding: 14px 24px; border-radius: 0; }
  .nav.open .nav-links a.active::after { display: none; }
  .nav.open .nav-phone {
    display: flex; justify-content: center; padding: 16px 24px; border-top: 1px solid var(--line);
    background: var(--bg-soft);
  }
  .float-call { display: flex; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  section { padding: 56px 0; }
  .container { padding: 0 18px; }
  .cards, .split, .contact-grid, .news-list { grid-template-columns: 1fr; gap: 20px; }
  .split.reverse .left { order: 0; }
  .features, .stats, .cert-strip, .steps, .cert-gallery { grid-template-columns: 1fr; }
  .cta-band { padding: 32px; text-align: left; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .info-card, .contact-form { padding: 24px; }
  .topbar .topbar-right { display: none; }
}