:root {
  color-scheme: light;
  --ink: #19211f;
  --muted: #596461;
  --paper: #ffffff;
  --soft: #f2f6f5;
  --line: #d8e0de;
  --brand: #087f72;
  --brand-dark: #075e56;
  --accent: #c84232;
  --warm: #f4eadf;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
}

a {
  color: var(--brand-dark);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent);
}

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

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 8px 12px;
  background: var(--ink);
  color: #fff;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(216, 224, 222, 0.9);
  background: rgba(255, 255, 255, 0.96);
}

.nav-shell,
.content-shell,
.footer-shell {
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
}

.nav-shell {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  object-fit: cover;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.site-nav a {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

.site-nav a[aria-current="page"],
.site-nav a:hover {
  color: var(--ink);
}

.hero {
  min-height: min(680px, calc(100vh - 68px));
  display: grid;
  align-items: center;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.98) 0 46%, rgba(255, 255, 255, 0.82) 68%, rgba(255, 255, 255, 0.58) 100%),
    url("assets/logo.png") right 7% center / min(48vw, 620px) auto no-repeat;
}

.hero-inner {
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
  padding: 76px 0 86px;
}

.hero-copy {
  max-width: 660px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  color: var(--brand-dark);
  font-size: 14px;
  font-weight: 700;
}

.eyebrow::before {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--brand);
  content: "";
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.25;
  letter-spacing: 0;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(42px, 7vw, 78px);
  font-weight: 750;
}

h2 {
  margin-bottom: 18px;
  font-size: 30px;
}

h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.hero-lead {
  max-width: 620px;
  margin: 0 0 32px;
  color: #36413e;
  font-size: 20px;
}

.identity-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin: 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  list-style: none;
}

.identity-row strong {
  color: var(--ink);
  font-weight: 700;
}

.section {
  padding: 76px 0;
}

.section-soft {
  background: var(--soft);
}

.section-warm {
  background: var(--warm);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 36px;
}

.section-heading p,
.feature p,
.operator-copy,
.legal-meta {
  color: var(--muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.feature {
  min-height: 180px;
  padding: 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.feature-index {
  display: block;
  margin-bottom: 24px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}

.fact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 56px;
  align-items: start;
}

.fact-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid #cdbdac;
  list-style: none;
}

.fact-list li {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid #cdbdac;
}

.fact-list strong {
  font-size: 14px;
}

.notice {
  padding: 22px;
  border-left: 4px solid var(--accent);
  background: rgba(255, 255, 255, 0.72);
}

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

.operator-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.65fr);
  gap: 64px;
  align-items: start;
}

.contact-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.contact-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.contact-list span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.pending {
  color: #8c382e;
  font-weight: 700;
}

.site-footer {
  padding: 34px 0;
  border-top: 1px solid #303b38;
  background: #18211f;
  color: #dce4e2;
}

.footer-shell {
  display: flex;
  justify-content: space-between;
  gap: 32px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
}

.site-footer a {
  color: #dce4e2;
}

.site-footer p {
  margin: 0;
  color: #aebbb7;
  font-size: 13px;
}

.legal-main {
  padding: 70px 0 90px;
}

.legal-header {
  max-width: 820px;
  margin-bottom: 44px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.legal-header h1 {
  margin-bottom: 16px;
  font-size: 44px;
}

.legal-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 760px);
  gap: 58px;
  align-items: start;
}

.legal-toc {
  position: sticky;
  top: 96px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.legal-toc li {
  border-bottom: 1px solid var(--line);
}

.legal-toc a {
  display: block;
  padding: 9px 0;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

.legal-article section {
  margin-bottom: 42px;
  scroll-margin-top: 96px;
}

.legal-article h2 {
  font-size: 24px;
}

.legal-article ul,
.legal-article ol {
  padding-left: 22px;
}

.legal-article li + li {
  margin-top: 8px;
}

.error-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px;
  background: var(--soft);
}

.error-content {
  max-width: 620px;
  text-align: center;
}

.error-code {
  margin: 0;
  color: var(--brand);
  font-size: 96px;
  font-weight: 800;
  line-height: 1;
}

.text-link {
  display: inline-block;
  margin-top: 18px;
  font-weight: 700;
}

@media (max-width: 820px) {
  .site-header {
    position: static;
  }

  .nav-shell {
    padding: 14px 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .site-nav {
    width: 100%;
    gap: 16px;
    overflow-x: auto;
    white-space: nowrap;
  }

  .hero {
    min-height: 620px;
    align-items: end;
    background:
      linear-gradient(0deg, rgba(255, 255, 255, 1) 0 58%, rgba(255, 255, 255, 0.45) 86%, rgba(255, 255, 255, 0.15) 100%),
      url("assets/logo.png") center 8% / min(78vw, 390px) auto no-repeat;
  }

  .hero-inner {
    padding: 230px 0 54px;
  }

  h1 {
    font-size: 48px;
  }

  .feature-grid,
  .fact-grid,
  .operator-band,
  .legal-layout {
    grid-template-columns: 1fr;
  }

  .fact-grid,
  .operator-band,
  .legal-layout {
    gap: 34px;
  }

  .legal-toc {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 18px;
  }

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

@media (max-width: 520px) {
  .nav-shell,
  .content-shell,
  .footer-shell,
  .hero-inner {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .section {
    padding: 56px 0;
  }

  .hero-lead {
    font-size: 18px;
  }

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

  .feature {
    min-height: auto;
  }

  .fact-list li {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .legal-header h1 {
    font-size: 36px;
  }

  .legal-toc {
    grid-template-columns: 1fr;
  }
}

@media print {
  .site-header,
  .site-footer,
  .legal-toc,
  .skip-link {
    display: none;
  }

  body {
    color: #000;
    font-size: 12pt;
  }

  .legal-main {
    padding: 0;
  }

  .legal-layout {
    display: block;
  }

  a {
    color: #000;
    text-decoration: none;
  }
}