@font-face {
  font-family: "漫游宋体";
  src: url("/assets/manyou-serif.woff2") format("woff2");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

:root {
  color-scheme: light;
  --paper: #f7f4ee;
  --ink: #272d2b;
  --muted: #62645d;
  --accent: #873e30;
  --accent-deep: #6d2f24;
  --line: #d8d5ca;
  --contact: #eaece5;
  --serif: "漫游宋体", "Noto Serif SC", "Songti SC", "SimSun", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 32px; scrollbar-color: #aaa99f var(--paper); }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); font-size: 16px; line-height: 1.8; -webkit-font-smoothing: antialiased; }
::selection { color: var(--paper); background: var(--accent); }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 5px; }
button { font: inherit; }
a, button { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 6px; }
button:disabled { opacity: .7; cursor: wait; }
svg { flex-shrink: 0; }
.icon { display: inline-block; width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; vertical-align: middle; }
.page-width { width: min(1160px, calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: absolute; top: 12px; left: 12px; z-index: 10; padding: 10px 18px; transform: translateY(-150%); background: var(--ink); color: var(--paper); }
.skip-link:focus { transform: translateY(0); }
.site-header { min-height: 106px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 14px; text-decoration: none; }
.brand-mark { display: inline-grid; place-items: center; width: 42px; height: 42px; border: 1px solid var(--accent); color: var(--accent); font-family: var(--serif); font-size: 26px; font-weight: 600; line-height: 1; }
.brand-name { font-size: 18px; font-weight: 600; letter-spacing: .06em; }
nav { display: flex; align-items: center; gap: 40px; }
nav a { display: inline-flex; min-height: 44px; align-items: center; gap: 10px; text-decoration: none; font-size: 14px; }
nav a:hover { color: var(--accent); text-decoration: underline; }
.hero { display: grid; grid-template-columns: 1.3fr 1fr; align-items: center; column-gap: clamp(40px, 7vw, 112px); padding-block: 76px 88px; }
h1, h2, p { margin: 0; }
h1, h2 { font-family: var(--serif); font-weight: 600; text-wrap: balance; }
h1 { font-size: clamp(36px, 4.1vw, 58px); line-height: 1.5; letter-spacing: -.02em; }
.hero-description { margin-top: 26px; color: var(--muted); font-size: 16px; line-height: 1.95; }
.primary-link { display: inline-flex; min-height: 52px; align-items: center; justify-content: center; gap: 26px; margin-top: 36px; padding: 10px 23px; color: var(--paper); background: var(--accent); text-decoration: none; font-size: 15px; transition: background-color 160ms; }
.primary-link:hover { background: var(--accent-deep); }
.primary-link .icon { transition: transform 180ms; }
.primary-link:hover .icon { transform: translateX(3px); }
.quiet-link { display: inline-flex; min-height: 44px; align-items: center; margin-left: 24px; font-size: 14px; }
.quiet-link:hover { color: var(--accent); }
.brand-sheet { min-height: 420px; padding: 30px 34px 26px; display: flex; flex-direction: column; justify-content: space-between; background: var(--accent); color: #fff4df; }
.sheet-top { display: flex; justify-content: space-between; font-size: 12px; letter-spacing: .18em; padding-bottom: 18px; border-bottom: 1px solid #b77763; }
.sheet-name { display: flex; flex-direction: column; align-items: center; padding-block: 12px 20px; font-family: var(--serif); font-size: clamp(58px, 6.2vw, 82px); line-height: 1.35; letter-spacing: .18em; text-indent: .18em; font-weight: 600; }
.sheet-bottom { display: flex; flex-direction: column; align-items: center; gap: 3px; padding-top: 16px; border-top: 1px solid #b77763; font-size: 12px; letter-spacing: .05em; }
.sheet-bottom span:last-child { font-size: 11px; letter-spacing: .1em; }
.section-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 70px; }
.about-section { border-top: 1px solid var(--line); padding-block: 72px 78px; }
h2 { font-size: 30px; line-height: 1.5; }
.section-heading > p { margin-top: 14px; color: var(--muted); font-size: 14px; }
.about-content { max-width: 720px; }
.about-content > p { color: var(--muted); font-size: 15px; line-height: 2; }
.about-content .intro { margin-bottom: 16px; color: var(--ink); font-size: 18px; line-height: 1.9; }
.intro strong { font-weight: 500; }
.company-details { margin: 32px 0 0; font-size: 14px; }
.company-details > div { display: grid; grid-template-columns: 104px 1fr; gap: 22px; padding: 14px 0; border-top: 1px solid var(--line); }
.company-details dt { color: var(--muted); }
.company-details dd { margin: 0; overflow-wrap: anywhere; }
.company-details a { text-decoration: none; }
.company-details a:hover { text-decoration: underline; }
.contact-section { background: var(--contact); }
.contact-inner { padding-block: 66px 48px; }
.contact-label { font-size: 14px; color: var(--muted); }
.wechat-row { display: flex; align-items: center; gap: 32px; margin-top: 6px; flex-wrap: wrap; }
.wechat-id { font-size: clamp(32px, 3.6vw, 46px); line-height: 1.5; letter-spacing: .04em; font-variant-numeric: tabular-nums; font-weight: 500; }
.copy-button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; gap: 9px; border: 1px solid #92988b; padding: 9px 16px; color: var(--ink); background: transparent; cursor: pointer; font-size: 13px; transition: color 160ms, background-color 160ms, border-color 160ms; }
.copy-button:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.contact-hint { margin-top: 16px; color: var(--muted); font-size: 13px; }
.copy-status { min-height: 26px; padding-top: 4px; font-size: 13px; color: var(--accent-deep); }
.site-footer { padding-block: 28px 30px; text-align: center; font-size: 12px; color: var(--muted); }
.icp-link { display: inline-block; margin-top: 3px; padding-block: 5px; text-decoration: none; }
.icp-link:hover { color: var(--accent); text-decoration: underline; }

@media (max-width: 900px) {
  .page-width { width: calc(100% - 64px); }
  .hero { column-gap: 36px; padding-block: 58px 64px; }
  .brand-sheet { min-height: 370px; padding-inline: 24px; }
  .sheet-name { font-size: 62px; }
  .section-grid { grid-template-columns: 1fr 2fr; gap: 38px; }
  .wechat-row { gap: 18px; }
  .quiet-link { margin-left: 18px; }
}

@media (max-width: 680px) {
  html { scroll-padding-top: 24px; }
  .page-width { width: calc(100% - 40px); }
  .site-header { min-height: 86px; gap: 12px; }
  .brand { gap: 10px; }
  .brand-mark { width: 34px; height: 34px; font-size: 23px; }
  .brand-name { font-size: 15px; letter-spacing: .01em; }
  nav { gap: 18px; }
  nav a { font-size: 13px; }
  nav a:first-child { display: none; }
  nav a .icon { width: 16px; height: 16px; }
  .hero { grid-template-columns: 1fr; gap: 40px; padding-block: 42px 48px; }
  h1 { font-size: clamp(30px, 8.1vw, 46px); line-height: 1.55; }
  .hero-description { margin-top: 20px; font-size: 15px; }
  .desktop-break { display: none; }
  .primary-link { margin-top: 26px; min-height: 50px; font-size: 14px; }
  .quiet-link { margin-left: 24px; }
  .brand-sheet { min-height: 0; padding: 20px 24px; }
  .sheet-top { padding-bottom: 12px; font-size: 11px; }
  .sheet-name { flex-direction: row; justify-content: center; gap: .15em; font-size: clamp(40px, 10vw, 60px); padding-block: 26px; letter-spacing: .09em; text-indent: .09em; }
  .sheet-bottom { padding-top: 12px; gap: 2px; font-size: 11px; }
  .section-grid { grid-template-columns: 1fr; gap: 28px; }
  .about-section { padding-block: 42px 46px; }
  h2 { font-size: 27px; }
  .section-heading > p { margin-top: 8px; }
  .about-content .intro { font-size: 17px; }
  .company-details { margin-top: 26px; font-size: 13px; }
  .company-details > div { grid-template-columns: 76px 1fr; gap: 14px; }
  .contact-inner { padding-block: 42px 28px; gap: 24px; }
  .wechat-id { font-size: 34px; }
  .wechat-row { gap: 15px; }
  .copy-button { font-size: 12px; padding-inline: 12px; }
  .copy-button .icon { width: 17px; height: 17px; }
  .contact-hint { font-size: 12px; }
  .site-footer { padding-block: 24px; }
}

@media (max-width: 360px) {
  .brand-name { font-size: 14px; }
  .brand-mark { width: 30px; height: 30px; }
  .wechat-row { gap: 10px; }
  .wechat-id { font-size: 31px; }
  .copy-button { padding-inline: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}