:root {
  --bg: #f7f7f2;
  --surface: #ffffff;
  --ink: #102033;
  --muted: #5d6b7d;
  --line: #e3e9f2;
  --primary: #0b4a3c;
  --primary-dark: #07332a;
  --accent: #c9973f;
  --shadow: 0 24px 60px rgba(16, 32, 51, 0.12);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
}

img {
  display: block;
  width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  border-color: var(--line);
  box-shadow: 0 10px 30px rgba(16, 32, 51, 0.08);
}

.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 12px 28px rgba(11, 74, 60, 0.25);
}

.brand-logo {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  object-fit: cover;
  background: #fbf8ee;
  box-shadow: 0 12px 28px rgba(18, 53, 111, 0.16);
}

.brand-text {
  display: grid;
  line-height: 1.25;
}

.brand-text strong {
  font-size: 18px;
}

.brand-text small {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  color: #2c3b4e;
  font-weight: 600;
}

.nav-menu a {
  position: relative;
}

.nav-menu a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: var(--primary);
  transition: width 0.2s ease;
}

.nav-menu a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 18px;
  border-radius: 999px;
  color: #fff;
  background: var(--primary);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 12px;
  background: #edf2ea;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  border-radius: 999px;
  background: var(--ink);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 84px 0 72px;
  background:
    radial-gradient(circle at 15% 20%, rgba(11, 74, 60, 0.14), transparent 32%),
    radial-gradient(circle at 85% 10%, rgba(201, 151, 63, 0.18), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, #f2f4ec 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  align-items: center;
  gap: 56px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--primary);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 20px;
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.hero-lead {
  max-width: 680px;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 30px 0 36px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 0;
  border-radius: 999px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 16px 34px rgba(11, 74, 60, 0.28);
}

.btn-ghost {
  color: var(--primary);
  background: #e9efe8;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
}

.hero-metrics div {
  padding: 16px;
  border: 1px solid rgba(11, 74, 60, 0.14);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
}

.hero-metrics dt {
  color: var(--primary);
  font-size: 34px;
  font-weight: 900;
  line-height: 1;
}

.hero-metrics dd {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.hero-media {
  position: relative;
}

.hero-media img {
  aspect-ratio: 16 / 11;
  object-fit: cover;
  border-radius: 32px;
  box-shadow: var(--shadow);
}

.hero-card {
  position: absolute;
  left: 22px;
  bottom: 22px;
  display: flex;
  align-items: center;
  gap: 12px;
  width: min(360px, calc(100% - 44px));
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  box-shadow: 0 16px 36px rgba(16, 32, 51, 0.16);
}

.hero-card p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.status-dot {
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: #19c37d;
  box-shadow: 0 0 0 8px rgba(25, 195, 125, 0.14);
}

.section {
  padding: 92px 0;
}

.section-head {
  max-width: 720px;
  margin: 0 auto 46px;
  text-align: center;
}

.section-head p:not(.eyebrow) {
  color: var(--muted);
}

.section-head.align-left {
  margin: 0;
  text-align: left;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.service-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(11, 74, 60, 0.24);
  box-shadow: var(--shadow);
}

.service-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: 20px;
  border-radius: 16px;
  color: #fff;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

.strengths {
  background: #0a2620;
  color: #edf2ea;
}

.strengths .section-head p:not(.eyebrow),
.strengths .check-list {
  color: #b9c9bd;
}

.split {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: center;
  gap: 54px;
}

.check-list {
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: #d9a441;
  font-weight: 900;
}

.media-panel {
  margin: 0;
}

.media-panel img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 30px;
  box-shadow: var(--shadow);
}

.media-panel figcaption {
  margin-top: 14px;
  color: inherit;
  opacity: 0.72;
  text-align: center;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.timeline li {
  position: relative;
  min-height: 210px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.timeline span {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 22px;
  border-radius: 50%;
  color: #fff;
  font-weight: 900;
  background: var(--ink);
}

.timeline p {
  margin-bottom: 0;
  color: var(--muted);
}

.network {
  background: linear-gradient(180deg, #f8f8f3 0%, #edf2ea 100%);
}

.network-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 54px;
}

.network-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.network-tags span {
  padding: 10px 16px;
  border: 1px solid rgba(11, 74, 60, 0.18);
  border-radius: 999px;
  color: var(--primary-dark);
  background: rgba(255, 255, 255, 0.76);
  font-weight: 700;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 54px;
  align-items: start;
}

.contact-copy p {
  color: var(--muted);
}

address {
  font-style: normal;
  display: grid;
  gap: 10px;
  margin-top: 28px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

address p {
  margin: 0;
}

.contact-form {
  display: grid;
  gap: 18px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

label {
  display: grid;
  gap: 8px;
  color: #2c3b4e;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #d7e0ec;
  border-radius: 14px;
  padding: 13px 14px;
  font: inherit;
  color: var(--ink);
  background: #fcfdf9;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(11, 74, 60, 0.12);
}

.form-tip {
  min-height: 24px;
  margin: 0;
  color: var(--primary-dark);
  font-weight: 700;
}

.site-footer {
  padding: 34px 0;
  color: #c3d2c7;
  background: #08211b;
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-grid p {
  margin: 6px 0 0;
}

.footer-grid a {
  font-weight: 800;
}

.footer-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a {
  opacity: 0.86;
}

.footer-links a:hover {
  opacity: 1;
  color: #fff;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero-grid,
  .split,
  .network-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .card-grid,
  .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: absolute;
    inset: 76px 14px auto 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: #fff;
    box-shadow: var(--shadow);
  }

  .nav-menu.is-open {
    display: flex;
  }

  .nav-menu a {
    padding: 12px 14px;
    border-radius: 12px;
  }

  .nav-menu a:hover {
    background: #eef3ea;
  }

  .nav-cta {
    text-align: center;
  }

  .hero {
    padding-top: 54px;
  }

  .hero-metrics,
  .card-grid,
  .timeline {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 68px 0;
  }

  .hero-card {
    position: static;
    width: 100%;
    margin-top: 14px;
  }

  .footer-grid {
    align-items: flex-start;
    flex-direction: column;
  }
}