:root {
  --ink: #172033;
  --muted: #5d6a7c;
  --line: #dde5ed;
  --grass: #5c8d54;
  --deep: #143b36;
  --gold: #d99b2b;
  --sky: #e9f5fb;
  --white: #fff;
  --soft: #f6f8f4;
  --orange: #d56b28;
  --shadow: 0 16px 45px rgba(27, 45, 72, .12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--ink);
  background: #f8faf8;
  line-height: 1.65;
}

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

img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 42px;
  background: rgba(255, 255, 255, .92);
  border-bottom: 1px solid rgba(221, 229, 237, .9);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 250px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--grass), var(--gold));
  border-radius: 50%;
  font-weight: 800;
  font-size: 22px;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 18px;
  line-height: 1.1;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  font-size: 15px;
  color: #334155;
}

.main-nav a:hover {
  color: var(--grass);
}

.nav-cta {
  padding: 10px 16px;
  color: #fff;
  background: var(--deep);
  border-radius: 999px;
  font-weight: 700;
  white-space: nowrap;
}

.hero {
  position: relative;
  min-height: calc(100vh - 72px);
  display: grid;
  align-items: end;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(9, 30, 28, .82) 0%, rgba(9, 30, 28, .48) 42%, rgba(9, 30, 28, .06) 100%),
    url("https://images.unsplash.com/photo-1549479350-02a806c9e030?auto=format&fit=crop&w=2200&q=85") center / cover;
}

.hero-content {
  position: relative;
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 110px 0 58px;
  color: #fff;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(38px, 6vw, 74px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 760px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, .9);
  font-size: 20px;
}

.hero-actions,
.trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-actions {
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 800;
  border: 1px solid transparent;
}

.btn.primary {
  color: #fff;
  background: var(--orange);
}

.btn.secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, .62);
  background: rgba(255, 255, 255, .12);
}

.btn.full {
  width: 100%;
}

.trust-strip {
  margin: 46px 0 0;
  padding: 0;
}

.trust-strip div {
  min-width: 138px;
  padding: 16px 18px;
  border: 1px solid rgba(255, 255, 255, .26);
  background: rgba(255, 255, 255, .14);
  backdrop-filter: blur(8px);
  border-radius: 8px;
}

.trust-strip dt {
  font-size: 26px;
  font-weight: 900;
}

.trust-strip dd {
  margin: 2px 0 0;
  color: rgba(255, 255, 255, .82);
}

.answer-band,
.section,
.contact-section {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.answer-band {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 26px;
  padding: 54px 0 20px;
}

.answer-card {
  padding: 34px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.answer-card h2,
.section h2,
.contact-section h2 {
  margin: 0;
  font-size: clamp(28px, 3.8vw, 44px);
  line-height: 1.2;
  letter-spacing: 0;
}

.answer-card p {
  margin: 16px 0 0;
  font-size: 18px;
  color: var(--muted);
}

.quick-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  align-content: center;
}

.quick-list span,
.feature-list span {
  padding: 12px 14px;
  color: #244033;
  background: #edf5e9;
  border: 1px solid #d4e7cf;
  border-radius: 999px;
  font-weight: 700;
  text-align: center;
}

.section {
  padding: 74px 0;
}

.section-head {
  max-width: 760px;
  margin-bottom: 30px;
}

.section-head p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 18px;
}

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

.route-card {
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(24, 42, 66, .08);
}

.route-card.featured {
  border-color: rgba(217, 155, 43, .68);
  box-shadow: var(--shadow);
}

.route-card img {
  width: 100%;
  height: 210px;
  object-fit: cover;
}

.route-body {
  padding: 22px;
}

.badge {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 5px 10px;
  color: #fff;
  background: var(--grass);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
}

.route-card h3 {
  margin: 0;
  font-size: 24px;
}

.route-card p {
  color: var(--muted);
}

.route-card ol {
  margin: 16px 0;
  padding-left: 22px;
  color: #334155;
}

.text-link {
  color: var(--orange);
  font-weight: 900;
}

.split {
  display: grid;
  grid-template-columns: 1fr .9fr;
  align-items: center;
  gap: 48px;
  padding-top: 30px;
}

.split > img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.split p:not(.eyebrow) {
  color: var(--muted);
  font-size: 18px;
}

.feature-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.advantage {
  padding: 24px;
  min-height: 156px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.advantage strong,
.advantage span {
  display: block;
}

.advantage strong {
  font-size: 21px;
}

.advantage span {
  margin-top: 10px;
  color: var(--muted);
}

.credentials-section {
  padding-top: 30px;
}

.credential-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  gap: 20px;
  align-items: start;
}

.credential-card {
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(24, 42, 66, .08);
}

.credential-card h3 {
  margin: 0;
  font-size: 24px;
}

.credential-card p {
  margin: 10px 0 18px;
  color: var(--muted);
}

.license-preview {
  width: 100%;
  max-height: 360px;
  object-fit: contain;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.qr-card {
  display: grid;
  gap: 12px;
}

.wechat-qr {
  width: min(100%, 320px);
  justify-self: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.faq-section {
  padding-top: 30px;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

details {
  padding: 20px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

summary {
  cursor: pointer;
  font-size: 19px;
  font-weight: 900;
}

details p {
  margin: 12px 0 0;
  color: var(--muted);
}

.contact-section {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 32px;
  align-items: stretch;
  margin-bottom: 70px;
  padding: 42px;
  color: #fff;
  background: linear-gradient(135deg, var(--deep), #2f5f45);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.contact-copy p:not(.eyebrow) {
  color: rgba(255, 255, 255, .82);
  font-size: 18px;
}

.contact-panel {
  display: grid;
  gap: 12px;
  padding: 22px;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: 8px;
}

.contact-item {
  padding: 16px;
  background: rgba(255, 255, 255, .12);
  border-radius: 8px;
}

.contact-item span,
.contact-item strong {
  display: block;
}

.contact-item span {
  color: rgba(255, 255, 255, .72);
  font-size: 13px;
}

.contact-item strong {
  margin-top: 4px;
  font-size: 18px;
}

.contact-qr {
  width: min(100%, 230px);
  margin: 4px auto;
}

.site-footer {
  padding: 34px 24px;
  color: #6b7280;
  background: #fff;
  border-top: 1px solid var(--line);
  text-align: center;
}

.site-footer p {
  margin: 4px 0;
}

@media (max-width: 980px) {
  .site-header {
    height: auto;
    min-height: 68px;
    padding: 12px 20px;
    flex-wrap: wrap;
  }

  .brand {
    min-width: 0;
  }

  .main-nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    gap: 18px;
    padding-bottom: 4px;
  }

  .answer-band,
  .split,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .route-grid,
  .advantage-grid,
  .credential-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 720px;
  }
}

@media (max-width: 620px) {
  .nav-cta {
    display: none;
  }

  .hero-content,
  .answer-band,
  .section,
  .contact-section {
    width: min(100% - 28px, 1180px);
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero-copy {
    font-size: 17px;
  }

  .quick-list {
    grid-template-columns: 1fr;
  }

  .answer-card,
  .contact-section {
    padding: 24px;
  }

  .route-card img,
  .split > img {
    height: 240px;
  }
}