:root {
  --ink: #1b2b34;
  --muted: #5e6f76;
  --line: #dce6e7;
  --paper: #ffffff;
  --wash: #f5f8f8;
  --teal: #0f766e;
  --teal-dark: #0b5751;
  --gold: #b7791f;
  --shadow: 0 18px 48px rgba(22, 52, 56, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  line-height: 1.65;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 12px clamp(20px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(220, 230, 231, 0.8);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  color: #fff;
  background: var(--teal);
  border-radius: 8px;
  font-weight: 800;
}

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

.brand strong {
  font-size: 17px;
  line-height: 1.2;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 32px);
  color: #2e454c;
  font-size: 14px;
}

.site-nav a {
  padding: 8px 0;
}

.site-nav a:hover {
  color: var(--teal);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
  font-size: 20px;
}

.hero {
  position: relative;
  min-height: clamp(580px, 82vh, 760px);
  display: grid;
  align-items: center;
  overflow: hidden;
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.96) 0%, rgba(255, 255, 255, 0.88) 38%, rgba(255, 255, 255, 0.22) 72%),
    linear-gradient(0deg, rgba(15, 118, 110, 0.16), rgba(15, 118, 110, 0.02));
}

.hero-content {
  position: relative;
  width: min(720px, calc(100% - 40px));
  margin-left: clamp(20px, 7vw, 96px);
  padding: 80px 0;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.08;
}

.hero-copy {
  max-width: 640px;
  margin-bottom: 34px;
  color: #33484f;
  font-size: clamp(17px, 2vw, 21px);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 700;
}

.button.primary {
  color: #fff;
  background: var(--teal);
  box-shadow: var(--shadow);
}

.button.secondary {
  color: var(--teal-dark);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(15, 118, 110, 0.28);
}

.section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(64px, 8vw, 104px) 0;
}

.section h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.2;
}

.section > p,
.split p,
.contact > div:first-child p {
  max-width: 850px;
  color: var(--muted);
  font-size: 17px;
}

.intro {
  text-align: center;
}

.intro p {
  margin-left: auto;
  margin-right: auto;
}

.band {
  width: 100%;
  max-width: none;
  padding-left: clamp(20px, 5vw, 72px);
  padding-right: clamp(20px, 5vw, 72px);
  background: var(--wash);
}

.band > .section-kicker,
.band > h2 {
  width: min(1120px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  width: min(1120px, 100%);
  margin: 30px auto 0;
}

.service-item {
  min-height: 248px;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(31, 58, 64, 0.06);
}

.item-no {
  display: inline-block;
  margin-bottom: 22px;
  color: var(--gold);
  font-weight: 800;
}

.service-item h3 {
  margin-bottom: 12px;
  font-size: 21px;
}

.service-item p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(32px, 6vw, 72px);
  align-items: start;
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.steps li {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.steps strong {
  color: var(--teal-dark);
  font-size: 20px;
}

.steps span {
  color: var(--muted);
}

.notice {
  width: 100%;
  max-width: none;
  padding-left: clamp(20px, 5vw, 72px);
  padding-right: clamp(20px, 5vw, 72px);
  color: #fff;
  background: #17383a;
}

.notice .section-kicker,
.notice h2,
.notice p {
  width: min(1120px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.notice .section-kicker {
  color: #7dd3c7;
}

.notice p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 17px;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}

.contact-panel {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.contact-panel p {
  margin-bottom: 12px;
  color: var(--muted);
}

.contact-panel p:last-child {
  margin-bottom: 0;
}

.contact-panel strong {
  color: var(--ink);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 24px;
  padding: 24px clamp(20px, 5vw, 72px);
  color: #6d7c82;
  background: #eef4f3;
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 940px) {
  .site-header {
    align-items: flex-start;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 72px;
    right: 20px;
    left: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 16px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

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

  .site-nav a {
    padding: 12px 4px;
    border-bottom: 1px solid var(--line);
  }

  .site-nav a:last-child {
    border-bottom: 0;
  }

  .hero {
    min-height: 640px;
  }

  .hero-overlay {
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(255, 255, 255, 0.84) 58%, rgba(255, 255, 255, 0.26) 100%),
      linear-gradient(0deg, rgba(15, 118, 110, 0.16), rgba(15, 118, 110, 0.02));
  }

  .hero-content {
    margin: 0 auto;
    padding-top: 64px;
  }

  .service-grid,
  .split,
  .contact {
    grid-template-columns: 1fr;
  }
}

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

  .brand strong {
    font-size: 15px;
  }

  .hero {
    min-height: 600px;
  }

  .hero-copy,
  .section > p,
  .split p,
  .notice p,
  .contact > div:first-child p {
    font-size: 16px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .service-item {
    min-height: 0;
    padding: 24px;
  }

  .steps li {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .site-footer {
    display: block;
  }

  .site-footer p + p {
    margin-top: 6px;
  }
}