:root {
  --primary: #0f766e;
  --primary-dark: #115e59;
  --primary-light: #14b8a6;
  --ink: #0f172a;
  --text: #334155;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-alt: #f6faf9;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(15, 118, 110, .08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
h1, h2, h3 { color: var(--ink); margin: 0; line-height: 1.35; }
p { margin: 0; }
ul, ol, dl { margin: 0; padding: 0; list-style: none; }

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 20px;
}

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

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #fff;
  font-size: 19px;
  font-weight: 700;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { color: var(--ink); font-size: 17px; letter-spacing: .5px; }
.brand-text em { font-style: normal; font-size: 12px; color: var(--muted); letter-spacing: .4px; }

.site-nav { display: flex; gap: 26px; font-size: 15px; }
.site-nav a { color: var(--text); transition: color .2s; }
.site-nav a:hover { color: var(--primary); }

/* Hero */
.hero {
  padding: 96px 0 84px;
  background:
    radial-gradient(1000px 420px at 12% -10%, rgba(20, 184, 166, .16), transparent 60%),
    radial-gradient(760px 380px at 92% 0%, rgba(15, 118, 110, .12), transparent 60%),
    var(--bg);
}

.hero-inner { max-width: 860px; margin: 0 auto; text-align: center; }

.badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(20, 184, 166, .12);
  color: var(--primary-dark);
  font-size: 13px;
  letter-spacing: 1px;
  margin-bottom: 22px;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  letter-spacing: 1px;
  margin-bottom: 22px;
}
.hero h1 span { color: var(--primary); }

.hero-desc {
  font-size: clamp(15px, 1.6vw, 17px);
  color: var(--text);
  max-width: 720px;
  margin: 0 auto;
}
.hero-desc strong { color: var(--ink); }

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  height: 46px;
  padding: 0 26px;
  border-radius: 999px;
  font-size: 15px;
  transition: transform .2s, box-shadow .2s, background .2s, color .2s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #fff;
  box-shadow: 0 10px 24px rgba(15, 118, 110, .28);
}
.btn-primary:hover { transform: translateY(-2px); }

.btn-ghost {
  border: 1px solid var(--line);
  color: var(--ink);
  background: #fff;
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

.hero-stats {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 44px;
}
.hero-stats li {
  min-width: 160px;
  padding: 16px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  font-size: 13px;
  color: var(--muted);
  box-shadow: var(--shadow);
}
.hero-stats span {
  display: block;
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 2px;
}

/* Sections */
.section { padding: 84px 0; }
.section-alt { background: var(--bg-alt); }

.section-title {
  font-size: clamp(24px, 3vw, 32px);
  text-align: center;
  position: relative;
  padding-bottom: 16px;
}
.section-title::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 48px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary-light), var(--primary));
}
.section-sub {
  text-align: center;
  color: var(--muted);
  font-size: 15px;
  margin-top: 14px;
}

.cards { margin-top: 46px; display: grid; gap: 22px; }
.cards-3 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(20, 184, 166, .5);
  box-shadow: var(--shadow);
}
.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(20, 184, 166, .12);
  font-size: 22px;
  margin-bottom: 16px;
}
.card h3 { font-size: 18px; margin-bottom: 10px; }
.card p { font-size: 15px; color: var(--text); }

/* Steps */
.steps { margin-top: 46px; }
.steps-title { font-size: 18px; text-align: center; margin-bottom: 20px; }
.step-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.step-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
  font-size: 15px;
}
.step-list span {
  flex: 0 0 26px;
  height: 26px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}

/* Notice */
.notice {
  margin-top: 42px;
  border: 1px solid rgba(20, 184, 166, .35);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  background: var(--bg-alt);
  padding: 26px 30px;
}
.notice li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  color: var(--text);
}
.notice li + li { margin-top: 12px; }
.notice li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 13px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary-light);
}
.notice strong { color: var(--ink); }

/* Company */
.company {
  margin-top: 44px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 22px;
  align-items: stretch;
}
.company-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 32px;
  box-shadow: var(--shadow);
}
.company-card h3 { font-size: 20px; margin-bottom: 18px; }
.company-info { display: grid; gap: 12px; }
.company-info > div {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 14px;
  align-items: baseline;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
  font-size: 15px;
}
.company-info > div:last-child { border-bottom: 0; padding-bottom: 0; }
.company-info dt { color: var(--muted); font-size: 14px; }
.company-info dd { margin: 0; color: var(--ink); }

.company-note {
  background: rgba(20, 184, 166, .08);
  border: 1px solid rgba(20, 184, 166, .25);
  border-radius: var(--radius);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
  font-size: 15px;
}
.muted { color: var(--muted); font-size: 14px; }

/* Footer */
.site-footer {
  background: #0b2b2a;
  color: #cbd5e1;
  padding: 40px 0;
  font-size: 14px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-brand {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}
.footer-right { text-align: right; }
.footer-right .muted { color: #7f9a98; }
.icp { margin-top: 6px; font-size: 13px; color: #94a3b8; letter-spacing: .5px; }
.icp a { transition: color .2s; }
.icp a:hover { color: #5eead4; }

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 900px) {
  .cards-3 { grid-template-columns: 1fr; }
  .step-list { grid-template-columns: 1fr; }
  .company { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .site-nav { display: none; }
  .hero { padding: 68px 0 56px; }
  .section { padding: 60px 0; }
  .hero-stats li { min-width: 130px; flex: 1; }
  .footer-inner { flex-direction: column; }
  .footer-right { text-align: left; }
}