:root {
  --ink: #17212b;
  --muted: #5a6673;
  --subtle: #8791a0;
  --surface: #ffffff;
  --surface-soft: #f3f5f7;
  --surface-strong: #e8edf1;
  --line: #d8e0e6;
  --accent: #156c63;
  --accent-strong: #0f4f49;
  --accent-soft: #d7ece8;
  --dark: #101820;
  --radius: 16px;
  --shadow: 0 22px 52px rgba(16, 24, 32, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Aptos", "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(215, 236, 232, 0.82), transparent 34%),
    linear-gradient(180deg, rgba(245, 247, 249, 0.92), rgba(243, 245, 247, 0.98)),
    var(--surface-soft);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(16, 24, 32, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 24, 32, 0.03) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 560px);
}

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

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

.section-shell {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(20px, 4vw, 48px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

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

.brand-mark {
  display: grid;
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  place-items: center;
  color: var(--accent-soft);
  background: var(--dark);
  border-radius: 12px;
  font-weight: 800;
}

.brand-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

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

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

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  white-space: nowrap;
}

.nav a:hover,
.nav-cta {
  color: var(--accent-strong);
}

.nav-cta {
  font-weight: 700;
}

.hero {
  padding: 60px 0 26px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(320px, 1.04fr);
  gap: 22px;
  align-items: stretch;
}

.hero-copy,
.proof-panel,
.signal-strip,
.case-card,
.contact-card {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(28px, 4vw, 48px);
  border-radius: var(--radius);
}

.eyebrow {
  margin-bottom: 12px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  max-width: 840px;
  margin-bottom: 16px;
  font-family: "Baskerville Old Face", "Georgia", "STSong", serif;
  font-size: clamp(42px, 5vw, 76px);
  line-height: 0.96;
}

.hero-lead {
  max-width: 620px;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.7;
}

.hero-proof {
  margin-bottom: 28px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.6;
}

.hero-actions,
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button,
.filter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.button.primary,
.filter.active {
  color: #ffffff;
  background: var(--dark);
  border-color: var(--dark);
}

.button.primary:hover,
.filter.active:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.button.secondary,
.filter {
  color: var(--ink);
  background: #ffffff;
}

.button.secondary:hover,
.filter:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.compliance-inline {
  margin-top: 24px;
  margin-bottom: 0;
  padding-top: 18px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  line-height: 1.72;
}

.proof-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 22px;
  padding: clamp(24px, 4vw, 38px);
  color: #ffffff;
  background:
    linear-gradient(135deg, rgba(21, 108, 99, 0.24), transparent 46%),
    var(--dark);
  border-color: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
}

.panel-top span {
  display: block;
  margin-bottom: 18px;
  color: #89f0df;
  font-size: 13px;
  font-weight: 800;
}

.amount-label {
  margin: 0 0 8px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.panel-top strong {
  display: block;
  max-width: 420px;
  font-family: "Baskerville Old Face", "Georgia", "STSong", serif;
  font-size: clamp(46px, 5vw, 72px);
  line-height: 0.98;
}

.metric-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.metric-list div {
  min-height: 108px;
  padding: 18px 16px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
}

.metric-list b {
  display: block;
  font-size: 28px;
  line-height: 1;
}

.metric-list span,
.panel-note,
.signal-strip p,
.section-heading p,
.case-card p,
.case-card dd,
.workflow-grid p,
.contact-card p {
  color: var(--muted);
  line-height: 1.72;
}

.metric-list span,
.panel-note {
  color: rgba(255, 255, 255, 0.74);
}

.metric-list span {
  display: block;
  margin-top: 10px;
  font-size: 12px;
}

.panel-note {
  margin-bottom: 0;
  padding-top: 6px;
  font-size: 14px;
}

.signal-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 14px;
  border-radius: var(--radius);
  overflow: hidden;
}

.signal-strip article {
  min-height: 188px;
  padding: 24px;
  border-right: 1px solid var(--line);
}

.signal-strip article:last-child {
  border-right: 0;
}

.signal-strip span,
.workflow-grid span {
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
}

.signal-strip h2 {
  margin: 36px 0 10px;
  font-size: 23px;
}

.section-block {
  padding: 56px 0 0;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(260px, 0.82fr) minmax(0, 1.18fr);
  gap: 34px;
  align-items: end;
  margin-bottom: 26px;
}

.section-heading h2,
.contact h2 {
  margin-bottom: 0;
  font-family: "Baskerville Old Face", "Georgia", "STSong", serif;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.12;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.case-card {
  display: flex;
  flex-direction: column;
  min-height: 302px;
  padding: 22px;
  border-radius: 12px;
}

.case-card:hover {
  border-color: rgba(21, 108, 99, 0.42);
  transform: translateY(-2px);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.case-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 14px;
}

.badge {
  color: var(--accent-strong);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 5px 9px;
  font-size: 12px;
  font-weight: 800;
}

.signal {
  color: var(--subtle);
  font-size: 12px;
  font-weight: 800;
  text-align: right;
}

.case-card h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.28;
}

.case-card dl {
  display: grid;
  gap: 10px;
  margin: auto 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.case-card dt {
  color: var(--ink);
  font-size: 13px;
  font-weight: 900;
}

.case-card dd {
  margin: 4px 0 0;
  font-size: 14px;
}

.workflow {
  margin-top: 56px;
  padding: 58px 0;
  background: var(--dark);
}

.workflow .section-heading h2,
.workflow .section-heading p {
  color: #ffffff;
}

.workflow .section-heading p:last-child {
  color: rgba(255, 255, 255, 0.72);
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
}

.workflow-grid article {
  min-height: 214px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.055);
}

.workflow-grid h3 {
  margin: 48px 0 12px;
  color: #ffffff;
  font-size: 21px;
}

.workflow-grid p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.68);
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 28px;
  align-items: center;
  padding-bottom: 70px;
}

.contact-card {
  padding: 24px;
  border-radius: var(--radius);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 26px clamp(20px, 4vw, 48px);
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: #ffffff;
}

@media (max-width: 980px) {
  .hero-grid,
  .section-heading,
  .contact,
  .signal-strip,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .signal-strip article {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .signal-strip article:last-child {
    border-bottom: 0;
  }

  .workflow-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .section-shell {
    width: min(100% - 28px, 1160px);
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    width: 100%;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero {
    padding-top: 34px;
  }

  .hero-copy,
  .proof-panel {
    padding: 22px;
  }

  h1 {
    font-size: 40px;
  }

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

  .workflow-grid article {
    min-height: auto;
  }

  .workflow-grid h3,
  .signal-strip h2 {
    margin-top: 28px;
  }

  .section-block,
  .workflow {
    padding-top: 48px;
  }

  .workflow {
    margin-top: 48px;
    padding-bottom: 48px;
  }

  .contact {
    padding-bottom: 54px;
  }

  .site-footer {
    flex-direction: column;
  }
}