:root {
  color-scheme: light;
  --bg-top: #f4efe4;
  --bg-bottom: #edf6f1;
  --surface: rgba(255, 255, 255, 0.84);
  --surface-strong: #ffffff;
  --ink: #162127;
  --muted: #56676e;
  --brand: #0d6a60;
  --brand-strong: #084a43;
  --brand-soft: rgba(13, 106, 96, 0.1);
  --line: rgba(22, 33, 39, 0.1);
  --shadow: 0 24px 64px rgba(18, 38, 44, 0.13);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(31, 115, 101, 0.18), transparent 34%),
    radial-gradient(circle at bottom right, rgba(189, 117, 53, 0.12), transparent 26%),
    linear-gradient(140deg, var(--bg-top), var(--bg-bottom));
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.22) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.45), transparent 85%);
}

a {
  color: inherit;
}

.legacy-shell {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 28px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.95fr);
  gap: 22px;
  align-items: stretch;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-main,
.hero-side {
  padding: clamp(24px, 5vw, 38px);
}

.hero-main {
  position: relative;
}

.hero-main::after {
  content: "";
  position: absolute;
  inset: auto 28px 28px auto;
  width: 120px;
  height: 120px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(13, 106, 96, 0.12), rgba(189, 117, 53, 0.08));
  transform: rotate(12deg);
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 640px;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.logo {
  width: clamp(112px, 18vw, 168px);
  height: auto;
  display: block;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand-strong);
  font-size: 0.92rem;
  letter-spacing: 0.04em;
}

.title {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.16;
  letter-spacing: -0.03em;
}

.lead {
  margin: 16px 0 0;
  max-width: 58ch;
  font-size: clamp(1rem, 1.5vw, 1.14rem);
  line-height: 1.85;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #ffffff;
  background: var(--brand);
}

.button-primary:hover {
  background: var(--brand-strong);
}

.button-secondary {
  border: 1px solid rgba(13, 106, 96, 0.22);
  background: rgba(255, 255, 255, 0.72);
  color: var(--brand-strong);
}

.button-secondary:hover {
  border-color: rgba(13, 106, 96, 0.38);
  background: #ffffff;
}

.hero-note {
  margin: 18px 0 0;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--muted);
}

.inline-domain {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(13, 106, 96, 0.08);
  color: var(--brand);
  font-weight: 700;
}

.hero-side {
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: linear-gradient(180deg, rgba(248, 252, 250, 0.88), rgba(255, 255, 255, 0.92));
  border-left: 1px solid rgba(22, 33, 39, 0.06);
}

.side-card {
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--surface-strong);
  border: 1px solid rgba(22, 33, 39, 0.08);
}

.side-card h2,
.section-card h2 {
  margin: 0 0 12px;
  font-size: 1.12rem;
}

.side-card p,
.section-card p,
.feature-card p,
.footer-note {
  margin: 0;
  color: var(--muted);
  line-height: 1.82;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.chip-list li {
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(13, 106, 96, 0.08);
  color: var(--brand-strong);
  font-size: 0.95rem;
}

.bullet-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.bullet-list li + li {
  margin-top: 8px;
}

.section-grid,
.details-grid {
  display: grid;
  gap: 20px;
  margin-top: 22px;
}

.section-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.section-card,
.feature-card {
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: 0 20px 48px rgba(18, 38, 44, 0.08);
}

.feature-card h3 {
  margin: 0 0 12px;
  font-size: 1.08rem;
}

.feature-card .kicker {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 0.85rem;
  color: var(--brand);
  letter-spacing: 0.08em;
}

.detail-list {
  display: grid;
  gap: 14px;
  margin: 0;
}

.detail-row {
  display: grid;
  gap: 6px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.detail-row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.detail-row dt {
  font-size: 0.92rem;
  color: #6c7a80;
}

.detail-row dd {
  margin: 0;
  font-size: 1rem;
  line-height: 1.7;
  word-break: break-word;
}

.link {
  color: var(--brand);
  text-decoration: none;
}

.link:hover {
  text-decoration: underline;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 18px;
  margin-top: 20px;
  padding: 20px 6px 0;
  color: #5f6d73;
  font-size: 0.94rem;
}

.footer p {
  margin: 0;
  line-height: 1.8;
}

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

  .hero-side {
    border-left: 0;
    border-top: 1px solid rgba(22, 33, 39, 0.06);
  }

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

@media (max-width: 760px) {
  .legacy-shell {
    width: min(100% - 20px, 1120px);
    padding-top: 18px;
  }

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

  .section-card,
  .feature-card {
    padding: 22px 18px;
  }

  .footer {
    padding-bottom: 20px;
  }
}

@media (max-width: 560px) {
  .brand-row {
    align-items: flex-start;
    gap: 14px;
  }

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

  .button {
    width: 100%;
  }

  .chip-list li {
    width: 100%;
    text-align: center;
  }
}