:root {
    --ink: #2A3924;
    --gold: #E7B52E;
    --rule: #dfe3dc;
    --section-gap: 104px;
    --head-gap: 36px;
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; background: #fff; }
  body {
    margin: 0;
    background: #fff;
    color: var(--ink);
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    font-size: 16px;
    line-height: 1.7;
    text-wrap: pretty;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
  }
  main { flex: 1 0 auto; padding-bottom: var(--section-gap); }
  main > * + * { margin-top: var(--section-gap); }
  a { color: inherit; text-decoration: none; }
  img { display: block; max-width: 100%; }
  .frame { width: min(1440px, calc(100% - 48px)); margin-inline: auto; }
  .top {
    position: sticky;
    top: 0;
    z-index: 4;
    background: #fff;
    border-bottom: 1px solid #eee;
  }
  .bar {
    display: flex;
    align-items: center;
    height: 76px;
    border-bottom: 3px solid var(--gold);
  }
  .logo { width: auto; height: 44px; }
  nav { margin-left: auto; display: flex; gap: 28px; font-size: 15px; }
  nav a:hover { text-decoration: underline; text-underline-offset: 5px; }
  .menu-btn { display: none; }

  .hero {
    display: grid;
    grid-template-columns: 1fr 1.05fr;
    gap: 56px;
    align-items: center;
    padding: 72px 0 0;
  }
  .kicker { margin: 0 0 12px; font-size: 13px; letter-spacing: 0.14em; }
  h1, h2 {
    font-family: "Songti SC", "STSong", "SimSun", serif;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin: 0;
  }
  h1 { font-size: clamp(34px, 3.1vw, 52px); }
  .hero p { margin: 20px 0 0; max-width: 28em; font-size: 18px; }
  .hero-photo { background: #fff; }
  .hero-photo img { width: 100%; height: auto; }

  .block { padding: 28px 0 8px; }
  .head { max-width: 36em; margin-bottom: 28px; }
  .head h2 { font-size: 36px; }
  .head p { margin: 10px 0 0; }
  .grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px 22px;
  }
  .pic { height: 220px; background: #f4f4f4; overflow: hidden; }
  .pic img { width: 100%; height: 100%; object-fit: cover; }
  .card h3 {
    margin: 12px 0 4px;
    font-size: 20px;
    font-family: "Songti SC", "STSong", "SimSun", serif;
  }
  .card p { margin: 0; }

  .split {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 40px;
    align-items: center;
    padding: 72px 0 24px;
  }
  .split .pic { height: 420px; }
  .split h2 { font-size: 36px; max-width: 10em; }
  .split p { margin: 14px 0 0; max-width: 28em; }
  .split ul { margin: 18px 0 0; padding: 0; list-style: none; max-width: 28em; }
  .split li {
    display: grid;
    grid-template-columns: 7em 1fr;
    gap: 12px;
    padding: 10px 0;
    border-top: 1px solid #e8e8e8;
  }
  .split li span { font-weight: 700; }

  .two {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
    padding-bottom: 16px;
  }
  .story .pic { height: 280px; }
  .story h2, .story h3 {
    margin: 14px 0 0;
    font-size: 28px;
    font-family: "Songti SC", "STSong", "SimSun", serif;
  }
  .story p { margin: 8px 0 0; max-width: 32em; }

  .pillar-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }
  .pillar {
    display: flex;
    flex-direction: column;
    padding-top: 12px;
    border-top: 4px solid var(--ink);
  }
  .pillar:nth-child(1) { border-color: #C74C3A; }
  .pillar:nth-child(2) { border-color: #E7B52E; }
  .pillar:nth-child(3) { border-color: #59882C; }
  .pillar-index {
    margin-bottom: 10px;
    color: #65705f;
    font-size: 13px;
    letter-spacing: 0.12em;
  }
  .pillar img { width: 100%; height: 250px; object-fit: cover; }
  .pillar h3 {
    margin: 16px 0 6px;
    font-size: 24px;
    font-family: "Songti SC", "STSong", "SimSun", serif;
  }
  .pillar p { margin: 0 0 16px; }
  .pillar h3 a {
    width: fit-content;
  }
  .pillar h3 a:hover {
    text-decoration: underline;
    text-underline-offset: 5px;
  }
  .section-head h2 a:hover {
    text-decoration: underline;
    text-underline-offset: 6px;
  }
  .home-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px 56px;
  }
  .home-split p,
  .home-next { margin: 0; max-width: 38em; font-size: 17px; }
  .home-next { max-width: 46em; margin-top: 28px; }
  .rows { margin: 0; padding: 0; list-style: none; }
  .rows li {
    display: grid;
    grid-template-columns: 9em 1fr;
    gap: 12px;
    padding: 12px 0;
    border-top: 1px solid #e8e8e8;
  }
  .rows li span { font-weight: 700; }
  .rows a { text-decoration: underline; text-underline-offset: 4px; }

  .site-footer {
    margin-top: auto;
    border-top: 1px solid #e8e8e8;
    background: #fff;
  }
  .footer-main {
    display: grid;
    grid-template-columns: 1.05fr 0.55fr 1.4fr;
    gap: 64px;
    padding: 48px 0 40px;
  }
  .footer-brand img { width: 136px; height: auto; }
  .footer-brand p { max-width: 18em; margin: 14px 0 0; }
  .footer-column h2 {
    margin: 0 0 14px;
    font-size: 19px;
    font-family: "Songti SC", "STSong", "SimSun", serif;
  }
  .footer-column a { display: block; width: fit-content; margin: 7px 0; }
  .footer-contact-list {
    display: grid;
    grid-template-columns: 7em 1fr;
    gap: 7px 14px;
    margin: 0;
  }
  .footer-contact-list dt { font-weight: 700; }
  .footer-contact-list dd { margin: 0; }
  .footer-contact-list a { display: inline; }
  .footer-bottom {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    padding: 18px 0 28px;
    border-top: 1px solid #e8e8e8;
    color: #5a6654;
    font-size: 13px;
  }
  .footer-bottom p { margin: 0; }

  .page {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 0.72fr;
    gap: 56px;
    align-items: start;
    padding: 72px 0 0;
  }
  .page h2 { font-size: 28px; margin-top: 40px; }
  .page p { max-width: 40em; margin: 16px 0 0; font-size: 17px; }
  .page .rows { margin-top: 20px; max-width: 40em; }
  .page-side { display: grid; gap: 22px; }
  .page-side img { width: 100%; height: auto; }

  .subhero {
    display: grid;
    grid-template-columns: 0.82fr 1.18fr;
    gap: 48px;
    align-items: center;
    padding: 72px 0 0;
  }
  .subhero h1 { font-size: clamp(36px, 4vw, 56px); }
  .subhero p { max-width: 32em; margin: 18px 0 0; font-size: 18px; }
  .subhero img { width: 100%; height: 420px; object-fit: cover; }
  .section { padding: 0; }
  .section-head { max-width: 42em; margin-bottom: var(--head-gap); }
  .section-head h2 { font-size: 36px; }
  .section-head p { margin: 12px 0 0; }
  .feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }
  .feature {
    border-top: 1px solid #dfe3dc;
    padding-top: 18px;
  }
  .feature h3 {
    margin: 0 0 8px;
    font-size: 21px;
    font-family: "Songti SC", "STSong", "SimSun", serif;
  }
  .feature p { margin: 0; }
  .process {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    counter-reset: step;
  }
  .process article {
    counter-increment: step;
    border-top: 1px solid #dfe3dc;
    padding-top: 16px;
  }
  .process article::before {
    content: "0" counter(step);
    display: block;
    margin-bottom: 14px;
    color: #6a7565;
    font-size: 13px;
    letter-spacing: 0.12em;
  }
  .process h3 { margin: 0 0 6px; font-size: 18px; }
  .process p { margin: 0; }
  .faq { max-width: 56em; }
  .faq details { border-top: 1px solid #dfe3dc; padding: 16px 0; }
  .faq summary { cursor: pointer; font-weight: 700; }
  .faq details p { margin: 10px 0 0; max-width: 44em; }
  .prose { max-width: 52em; padding: 56px 0 24px; }
  .prose h1 { font-size: clamp(36px, 4vw, 52px); }
  .prose h2 { margin: 38px 0 0; font-size: 26px; }
  .prose p, .prose li { font-size: 16px; }
  .prose p { margin: 14px 0 0; }
  .prose ul { padding-left: 1.2em; }
  @media (max-width: 1100px) {
    .grid { grid-template-columns: repeat(2, 1fr); }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 900px) {
    .frame { width: min(1440px, calc(100% - 32px)); }
    .bar { height: auto; padding: 12px 0; flex-wrap: wrap; }
    nav { display: none; width: 100%; flex-direction: column; gap: 0; }
    .top.open nav { display: flex; }
    .top.open nav a { padding: 12px 0; border-bottom: 1px solid #eee; }
    .menu-btn {
      display: inline-block;
      margin-left: auto;
      background: #fff;
      border: 1px solid var(--ink);
      font: inherit;
      padding: 6px 10px;
    }
    :root { --section-gap: 64px; --head-gap: 24px; }
    .hero, .split, .two, .page, .subhero, .home-split, .footer-main, .split li { grid-template-columns: 1fr; }
    .hero { padding-top: 36px; }
    .page { padding-top: 36px; }
    .section-head h2 { font-size: 26px; }
    .grid { gap: 22px 14px; }
    .split .pic, .story .pic { height: 220px; }
    .pic { height: 150px; }
    .card h3 { font-size: 17px; }
    .card p { font-size: 15px; }
    .split { padding-top: 48px; }
    .rows li, .split li { grid-template-columns: 1fr; gap: 2px; }
    .hero-photo { height: auto; }
    .subhero { padding-top: 36px; }
    .subhero img { height: 240px; }
    .feature-grid, .process, .pillar-grid { grid-template-columns: 1fr; }
    .pillar img { height: 220px; }
    .footer-main { gap: 32px; }
    .footer-contact-list { grid-template-columns: 1fr; gap: 3px; }
    .footer-contact-list dd { margin-bottom: 8px; }
    .footer-bottom { flex-direction: column; }
  }