/* ================================
   Fenghui Jiahe - Global Stylesheet
   简约大气 · 企业官网
   ================================ */

:root {
  /* 品牌色 - 取自 Logo */
  --brand-deep: #0a2540;        /* 主深蓝 */
  --brand-blue: #1652a0;        /* 中蓝 */
  --brand-accent: #00a86b;      /* 科技绿 */
  --brand-accent-2: #2563eb;    /* 鲜蓝点缀 */
  --brand-light: #e8f5ee;       /* 浅绿背景 */

  /* 中性 */
  --ink-900: #0f172a;
  --ink-700: #334155;
  --ink-500: #64748b;
  --ink-300: #cbd5e1;
  --line:    #e2e8f0;
  --bg:      #ffffff;
  --bg-soft: #f8fafc;
  --bg-soft-2: #f1f5f9;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 6px 20px -8px rgba(15, 23, 42, 0.18);
  --shadow-lg: 0 20px 40px -12px rgba(10, 37, 64, 0.22);

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;

  /* 容器 */
  --container: 1200px;
  --gutter: 24px;

  /* 动效 */
  --t-fast: 180ms ease;
  --t-med: 320ms cubic-bezier(.2,.7,.2,1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
               "Segoe UI", Roboto, "Helvetica Neue", Arial, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-700);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--t-fast); }
a:hover { color: var(--brand-accent); }

h1, h2, h3, h4 {
  color: var(--ink-900);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 0.6em;
}
h1 { font-size: clamp(2.2rem, 4.6vw, 3.6rem); line-height: 1.15; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); line-height: 1.25; }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }

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

/* ================ 顶部导航 ================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-med), background var(--t-med);
}
.nav.scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--line);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0;
  font-weight: 700;
  color: var(--ink-900);
}
.brand img {
  height: 46px;
  width: auto;
  max-width: 200px;
  transition: transform var(--t-med);
}
.brand:hover img { transform: scale(1.04); }

.menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.menu a {
  position: relative;
  padding: 10px 16px;
  font-size: 0.95rem;
  color: var(--ink-700);
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: color var(--t-fast), background var(--t-fast);
}
.menu a:hover { color: var(--brand-accent); background: var(--bg-soft); }
.menu a.active {
  color: var(--brand-accent);
}
.menu a.active::after {
  content: "";
  position: absolute;
  left: 16px; right: 16px; bottom: 4px;
  height: 2px;
  background: var(--brand-accent);
  border-radius: 2px;
}

.nav__cta {
  padding: 9px 18px;
  background: var(--brand-deep);
  color: #fff !important;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: transform var(--t-fast), background var(--t-fast), box-shadow var(--t-fast);
}
.nav__cta:hover {
  background: var(--brand-accent);
  color: #fff !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.menu-toggle {
  display: none;
  border: none;
  background: transparent;
  width: 40px; height: 40px;
  border-radius: 8px;
  cursor: pointer;
}
.menu-toggle span {
  display: block; width: 22px; height: 2px;
  margin: 5px auto;
  background: var(--ink-900);
  transition: transform var(--t-fast), opacity var(--t-fast);
}

/* ================ 通用区块 ================ */
section {
  padding: 96px 0;
  position: relative;
}
.section--soft { background: var(--bg-soft); }
.section--dark {
  background: linear-gradient(135deg, #0a2540 0%, #143a66 100%);
  color: #cbd5e1;
}
.section--dark h1, .section--dark h2, .section--dark h3 { color: #fff; }

.section__head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px;
}
.section__eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--brand-accent);
  text-transform: uppercase;
  margin-bottom: 12px;
  padding: 4px 10px;
  background: var(--brand-light);
  border-radius: 999px;
}
.section--dark .section__eyebrow {
  color: #6ee7b7;
  background: rgba(0, 168, 107, 0.16);
}
.section__head p { color: var(--ink-500); font-size: 1.05rem; }
.section--dark .section__head p { color: #94a3b8; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all var(--t-med);
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--primary {
  background: var(--brand-deep);
  color: #fff;
}
.btn--primary:hover { background: var(--brand-accent); color: #fff; }
.btn--ghost {
  background: transparent;
  color: var(--ink-900);
  border-color: var(--ink-300);
}
.btn--ghost:hover { border-color: var(--brand-accent); color: var(--brand-accent); }
.btn--white {
  background: #fff;
  color: var(--brand-deep);
}
.btn--white:hover { background: var(--brand-accent); color: #fff; }

/* ================ 首页 Hero ================ */
.hero {
  position: relative;
  padding: 200px 0 120px;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(0, 168, 107, 0.18), transparent 60%),
    radial-gradient(900px 600px at 10% 110%, rgba(22, 82, 160, 0.18), transparent 55%),
    linear-gradient(180deg, #f5fbfa 0%, #ffffff 100%);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(15,23,42,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15,23,42,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 40%, transparent 80%);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}
.hero__title { margin-bottom: 24px; white-space: nowrap; }
.hero__title .accent {
  color: var(--brand-accent);
  position: relative;
  white-space: nowrap;
}
.hero__title .accent::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 4px;
  height: 12px;
  background: var(--brand-light);
  z-index: -1;
  border-radius: 4px;
}
.hero__lead {
  font-size: 1.15rem;
  color: var(--ink-700);
  max-width: 560px;
  margin-bottom: 36px;
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__stats {
  margin-top: 60px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 720px;
}
.hero__stat strong {
  display: block;
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--brand-deep);
  letter-spacing: -0.03em;
  line-height: 1;
}
.hero__stat span {
  display: block;
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--ink-500);
}

/* Hero 视觉 */
.hero__visual {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 480px;
  margin-left: auto;
}
.shield {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
}
.shield__core {
  position: relative;
  width: 72%; height: 72%;
  border-radius: 50%;
  background: linear-gradient(135deg, #ffffff 0%, #e8f5ee 100%);
  box-shadow:
    0 30px 80px -20px rgba(10, 37, 64, 0.35),
    inset 0 0 0 8px rgba(255,255,255,0.6);
  display: flex; align-items: center; justify-content: center;
}
.shield__core::before {
  content: "";
  position: absolute; inset: -12px;
  border-radius: 50%;
  border: 1.5px dashed rgba(0, 168, 107, 0.3);
  animation: spin 18s linear infinite;
}
.shield__core::after {
  content: "";
  position: absolute; inset: -32px;
  border-radius: 50%;
  border: 1px dashed rgba(22, 82, 160, 0.2);
  animation: spin 28s linear infinite reverse;
}
.shield__logo {
  font-size: 6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--brand-blue) 0%, var(--brand-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.04em;
}

.orbit {
  position: absolute;
  border-radius: 50%;
  background: #fff;
  box-shadow: var(--shadow-md);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  color: var(--brand-deep);
  font-size: 0.78rem;
  text-align: center;
  line-height: 1.1;
  padding: 6px;
  animation: float 6s ease-in-out infinite;
}
.orbit small {
  display: block;
  font-size: 0.62rem;
  color: var(--ink-500);
  font-weight: 500;
  margin-top: 2px;
}
.orbit--1 { width: 88px; height: 88px; top: 4%; left: 4%;  animation-delay: 0s; }
.orbit--2 { width: 78px; height: 78px; top: 14%; right: 0%; animation-delay: -1.5s; }
.orbit--3 { width: 96px; height: 96px; bottom: 6%; left: 0%; animation-delay: -3s; }
.orbit--4 { width: 84px; height: 84px; bottom: 12%; right: 4%; animation-delay: -4.5s; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes float {
  0%,100% { transform: translateY(0); }
  50%     { transform: translateY(-10px); }
}

/* ================ 业务亮点 ================ */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  transition: transform var(--t-med), box-shadow var(--t-med), border-color var(--t-med);
}
.feature:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.feature__icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--brand-light);
  color: var(--brand-accent);
  margin-bottom: 18px;
}
.feature__icon svg { width: 28px; height: 28px; }
.feature h3 { margin-bottom: 8px; }
.feature p { font-size: 0.92rem; color: var(--ink-500); margin: 0; }

/* ================ 主营业务 ================ */
.services {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.service {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  transition: all var(--t-med);
}
.service:hover { border-color: transparent; transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.service__top {
  height: 200px;
  display: flex; align-items: center; justify-content: center;
  position: relative;
  overflow: hidden;
}
.service__top svg { width: 60px; height: 60px; color: #fff; }
.service__top::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.06) 100%);
}
.svc-1 .service__top { background: linear-gradient(135deg, #0a2540, #1652a0); }
.svc-2 .service__top { background: linear-gradient(135deg, #007a4d, #00a86b); }
.svc-3 .service__top { background: linear-gradient(135deg, #1d4ed8, #60a5fa); }
.service__body { padding: 28px; }
.service h3 { font-size: 1.2rem; margin-bottom: 10px; }
.service p { color: var(--ink-500); font-size: 0.93rem; }
.service ul {
  list-style: none;
  padding: 14px 0 0;
  margin: 14px 0 0;
  border-top: 1px dashed var(--line);
}
.service ul li {
  font-size: 0.88rem;
  color: var(--ink-700);
  padding: 4px 0 4px 18px;
  position: relative;
}
.service ul li::before {
  content: "";
  position: absolute; left: 0; top: 12px;
  width: 8px; height: 8px;
  background: var(--brand-accent);
  border-radius: 50%;
}

/* ================ 客户行业 ================ */
.industries {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.industry {
  position: relative;
  padding: 36px 28px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid var(--line);
  text-align: center;
  transition: all var(--t-med);
}
.industry:hover {
  background: var(--brand-deep);
  border-color: var(--brand-deep);
}
.industry:hover h3, .industry:hover p, .industry:hover span { color: #fff; }
.industry__icon {
  width: 64px; height: 64px;
  margin: 0 auto 18px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  background: var(--brand-light);
  color: var(--brand-accent);
  transition: all var(--t-med);
}
.industry:hover .industry__icon {
  background: rgba(255,255,255,0.12);
  color: #6ee7b7;
}
.industry__icon svg { width: 32px; height: 32px; }
.industry h3 { font-size: 1.15rem; margin-bottom: 6px; transition: color var(--t-med); }
.industry span {
  display: block;
  font-size: 0.78rem;
  color: var(--ink-500);
  letter-spacing: 0.16em;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.industry p { font-size: 0.88rem; color: var(--ink-500); margin: 0; transition: color var(--t-med); }

/* ================ CTA Banner ================ */
.cta {
  background: linear-gradient(135deg, #0a2540 0%, #1652a0 100%);
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(0,168,107,0.22), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(37,99,235,0.3), transparent 50%);
}
.cta__inner {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  color: #fff;
}
.cta h2 { color: #fff; max-width: 620px; }
.cta p { color: #cbd5e1; max-width: 540px; margin: 0; }
.cta__actions { display: flex; gap: 14px; flex-shrink: 0; }

/* ================ Footer ================ */
.footer {
  background: #061a30;
  color: #94a3b8;
  padding: 64px 0 24px;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer__brand img { height: 50px; width: auto; max-width: 220px; filter: brightness(0) invert(1); }
.footer h4 {
  color: #fff;
  font-size: 0.92rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 18px;
  font-weight: 600;
}
.footer__about { margin-top: 16px; font-size: 0.92rem; line-height: 1.8; max-width: 320px; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { padding: 6px 0; font-size: 0.92rem; }
.footer a:hover { color: #6ee7b7; }
.footer__legal {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 0.84rem;
}
.footer__legal span { color: #64748b; }

/* ================ 内页 Hero (子页面通用) ================ */
.page-hero {
  padding: 180px 0 80px;
  background:
    radial-gradient(1000px 500px at 100% 0%, rgba(0, 168, 107, 0.18), transparent 60%),
    linear-gradient(180deg, #f0f9f4 0%, #ffffff 100%);
  text-align: center;
}
.page-hero .crumbs {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--ink-500);
  margin-bottom: 24px;
}
.page-hero .crumbs a { color: var(--brand-accent); }
.page-hero h1 { margin-bottom: 18px; }
.page-hero p { max-width: 680px; margin: 0 auto; color: var(--ink-500); font-size: 1.08rem; }

/* ================ 关于我们 内容 ================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.about-grid h2 { margin-bottom: 24px; }
.about-grid p { font-size: 1.02rem; }
.about-meta {
  background: var(--bg-soft);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.about-meta dl { margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 28px 24px; }
.about-meta dt {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-500);
  margin-bottom: 4px;
}
.about-meta dd { margin: 0; font-size: 1.6rem; font-weight: 800; color: var(--brand-deep); letter-spacing: -0.02em; }

.timeline {
  position: relative;
  margin: 60px auto 0;
  max-width: 880px;
  padding: 28px 0;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--brand-accent), var(--brand-blue));
  transform: translateX(-50%);
}
.timeline__item {
  position: relative;
  width: 50%;
  padding: 20px 40px;
}
.timeline__item:nth-child(odd) { margin-left: 0; text-align: right; }
.timeline__item:nth-child(even) { margin-left: 50%; }
.timeline__item::before {
  content: "";
  position: absolute;
  top: 32px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--brand-accent);
  z-index: 1;
}
.timeline__item:nth-child(odd)::before { right: -7px; }
.timeline__item:nth-child(even)::before { left: -7px; }
.timeline__item .year {
  display: inline-block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--brand-accent);
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.timeline__item h4 { color: var(--ink-900); margin-bottom: 6px; font-size: 1.05rem; }
.timeline__item p { color: var(--ink-500); font-size: 0.92rem; margin: 0; }

/* 案例表格 */
.cases {
  background: var(--bg-soft);
}
.case-table {
  width: 100%;
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border-collapse: collapse;
}
.case-table th, .case-table td {
  padding: 18px 24px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
.case-table th {
  background: var(--brand-deep);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
}
.case-table tbody tr:last-child td { border-bottom: none; }
.case-table tbody tr { transition: background var(--t-fast); }
.case-table tbody tr:hover { background: var(--bg-soft); }
.case-table td:first-child {
  font-weight: 600;
  color: var(--ink-900);
}

/* 资质卡片 */
.certs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.cert {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.cert__icon {
  width: 56px; height: 56px;
  flex-shrink: 0;
  border-radius: 12px;
  background: var(--brand-light);
  color: var(--brand-accent);
  display: flex; align-items: center; justify-content: center;
}
.cert__icon svg { width: 28px; height: 28px; }
.cert h4 { font-size: 1rem; margin-bottom: 6px; }
.cert p { font-size: 0.88rem; color: var(--ink-500); margin: 0; }

/* ================ 产品服务页 ================ */
.product-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 48px;
}
.product-tabs .tab {
  padding: 10px 22px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-700);
  cursor: pointer;
  transition: all var(--t-fast);
}
.product-tabs .tab:hover { border-color: var(--brand-accent); color: var(--brand-accent); }
.product-tabs .tab.active {
  background: var(--brand-deep);
  color: #fff;
  border-color: var(--brand-deep);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.product {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  padding: 32px 28px;
  transition: all var(--t-med);
}
.product:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.product__tag {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand-accent);
  background: var(--brand-light);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.product h3 { font-size: 1.1rem; margin-bottom: 10px; }
.product p { font-size: 0.9rem; color: var(--ink-500); }
.product__list {
  margin: 18px 0 0;
  padding: 18px 0 0;
  border-top: 1px dashed var(--line);
  list-style: none;
}
.product__list li {
  font-size: 0.85rem;
  color: var(--ink-700);
  padding: 4px 0 4px 18px;
  position: relative;
}
.product__list li::before {
  content: "→";
  position: absolute; left: 0; top: 4px;
  color: var(--brand-accent); font-weight: 700;
}

/* 服务流程 */
.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.process::before {
  content: "";
  position: absolute;
  top: 36px; left: 12.5%; right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-accent), var(--brand-blue));
  z-index: 0;
}
.step {
  position: relative;
  z-index: 1;
  text-align: center;
}
.step__num {
  width: 72px; height: 72px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--brand-accent);
  color: var(--brand-accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  font-weight: 800;
  box-shadow: 0 8px 24px -8px rgba(0, 168, 107, 0.4);
}
.step h4 { font-size: 1.05rem; margin-bottom: 6px; }
.step p { font-size: 0.88rem; color: var(--ink-500); margin: 0; }

/* ================ 联系页 ================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
}
.contact-info { background: var(--brand-deep); color: #cbd5e1; border-radius: var(--radius-lg); padding: 48px; }
.contact-info h2 { color: #fff; }
.contact-info > p { color: #94a3b8; margin-bottom: 36px; }
.contact-info dl { margin: 0; display: grid; gap: 24px; }
.contact-info dt {
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #6ee7b7;
  margin-bottom: 6px;
}
.contact-info dd { margin: 0; color: #fff; font-size: 1rem; line-height: 1.6; }
.contact-info dd a { color: #fff; }
.contact-info dd a:hover { color: #6ee7b7; }
.contact-info .socials { margin-top: 36px; display: flex; gap: 12px; }
.contact-info .socials a {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--t-fast);
}
.contact-info .socials a:hover { background: var(--brand-accent); transform: translateY(-2px); }
.contact-info .socials svg { width: 18px; height: 18px; color: #fff; }

.contact-form {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  padding: 48px;
}
.contact-form h2 { margin-bottom: 8px; }
.contact-form > p { color: var(--ink-500); margin-bottom: 32px; }
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--ink-700);
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--bg-soft);
  transition: border-color var(--t-fast), background var(--t-fast);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--brand-accent);
  background: #fff;
  box-shadow: 0 0 0 3px var(--brand-light);
}
.field textarea { resize: vertical; min-height: 120px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field--full { grid-column: 1 / -1; }

.form-success {
  display: none;
  margin-top: 18px;
  padding: 14px 18px;
  border-radius: 10px;
  background: var(--brand-light);
  color: var(--brand-accent);
  font-weight: 500;
}
.form-success.show { display: block; }

/* 地图占位 */
.map {
  margin-top: 64px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 320px;
  background:
    linear-gradient(180deg, rgba(0,0,0,0) 60%, rgba(10,37,64,0.05) 100%),
    repeating-linear-gradient(45deg, #e2e8f0, #e2e8f0 1px, transparent 1px, transparent 18px),
    repeating-linear-gradient(-45deg, #e2e8f0, #e2e8f0 1px, transparent 1px, transparent 18px),
    linear-gradient(135deg, #f8fafc, #e8f5ee);
  position: relative;
  border: 1px solid var(--line);
}
.map__pin {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -100%);
  text-align: center;
}
.map__pin .dot {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--brand-accent);
  margin: 0 auto 6px;
  box-shadow: 0 0 0 8px rgba(0, 168, 107, 0.25), 0 0 0 16px rgba(0, 168, 107, 0.12);
  animation: pulse 2s infinite;
}
.map__pin span {
  display: inline-block;
  padding: 6px 12px;
  background: #fff;
  border-radius: 6px;
  font-weight: 600;
  color: var(--brand-deep);
  font-size: 0.88rem;
  box-shadow: var(--shadow-sm);
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 8px rgba(0, 168, 107, 0.25), 0 0 0 16px rgba(0, 168, 107, 0.12); }
  50% { box-shadow: 0 0 0 12px rgba(0, 168, 107, 0.2), 0 0 0 22px rgba(0, 168, 107, 0.08); }
}

/* 资质横幅 */
.purchase {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.purchase__card {
  padding: 28px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #0a2540 0%, #143a66 100%);
  color: #cbd5e1;
  position: relative;
  overflow: hidden;
}
.purchase__card::before {
  content: "";
  position: absolute;
  top: -50%; right: -20%;
  width: 200px; height: 200px;
  background: rgba(0, 168, 107, 0.3);
  border-radius: 50%;
  filter: blur(40px);
}
.purchase__card h4 { color: #fff; font-size: 1.05rem; margin-bottom: 6px; position: relative; }
.purchase__card p { font-size: 0.88rem; margin: 0; position: relative; }

/* ================ 滚动渐入 ================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(.2,.7,.2,1);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ================ 响应式 ================ */
@media (max-width: 960px) {
  :root { --gutter: 20px; }
  section { padding: 72px 0; }
  .hero { padding: 160px 0 80px; }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__title { white-space: normal; }
  .hero__visual { max-width: 360px; margin: 20px auto 0; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .features { grid-template-columns: repeat(2, 1fr); }
  .services { grid-template-columns: 1fr; }
  .industries { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .certs { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr 1fr; }
  .process { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .process::before { display: none; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .contact-info, .contact-form { padding: 32px; }
  .cta__inner { flex-direction: column; text-align: center; align-items: flex-start; }
  .purchase { grid-template-columns: 1fr; }
  .case-table { font-size: 0.88rem; }
  .case-table th, .case-table td { padding: 14px 16px; }
  .timeline::before { left: 12px; }
  .timeline__item { width: 100%; margin-left: 0 !important; text-align: left !important; padding-left: 48px; }
  .timeline__item::before { left: 5px !important; right: auto !important; }
}

@media (max-width: 600px) {
  .menu { display: none; position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; gap: 0; padding: 12px var(--gutter); background: #fff; border-top: 1px solid var(--line); box-shadow: var(--shadow-md); }
  .menu.open { display: flex; }
  .menu a { width: 100%; }
  .menu-toggle { display: block; }
  .nav__cta { display: none; }
  .features { grid-template-columns: 1fr; }
  .industries { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .footer__legal { flex-direction: column; gap: 8px; }
  .hero__stats { grid-template-columns: 1fr 1fr; }
  h1 { font-size: 2rem !important; }
  h2 { font-size: 1.5rem !important; }
}