/* 子页面（代运营、定价）共用。和首页同一套颜色；版式只用一套网格和一套字号：
   版心 min(1440, 88%)，12 栏、栏距 24；标题宋体，正文和数字无衬线，数字等宽对齐 */
:root {
  --paper: #f3f0e9;
  --sheet: #fcfbf8;
  --ink: #1f2533;
  --ink-2: #3f4350;
  --ink-3: #5f636e;
  --rule: rgba(45,38,25,.14);
  --line: rgba(45,38,25,.10);
  --serif: "Songti SC", "Noto Serif SC", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Noto Sans CJK SC", sans-serif;
  --frame: min(1440px, 88%);   /* 版心：和首页同一个，顶栏、正文、页脚共用；宽屏最多 1440 */
  --gap: 24px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { color: var(--ink); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
html { background: var(--paper); }   /* 底色只放 html：body 透明，页头后面的窗光（z-index -1）才露得出来 */
html { scroll-padding-top: 140px; }
/* 切换要顺：页内锚点平滑滚动；跨页淡入淡出、顶栏不动（Chrome 126+ / Safari 18.2+，不支持的照常跳）。减少动态效果时都不做。
   平滑滚动等页面加载完再开（.smooth），否则带 #锚点 打开时边滚边长高，会停在半路 */
@media (prefers-reduced-motion: no-preference) {
  html.smooth { scroll-behavior: smooth; }
  @view-transition { navigation: auto; }
}
nav { view-transition-name: site-nav; }
a { color: inherit; text-decoration: none; }
p, li, dd, h1, h2, h3 { text-wrap: pretty; }
.num { font-feature-settings: "tnum" 1; font-variant-numeric: tabular-nums; }

nav { position: fixed; z-index: 30; top: 0; left: 0; right: 0; background: rgba(243,240,233,.86); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
nav .row { width: var(--frame); height: 72px; margin: 0 auto; display: flex; align-items: center; gap: 40px; }
nav img { height: 21px; display: block; }
nav .links { display: flex; gap: 28px; font-size: 14px; color: var(--ink-2); }
nav .links a.on { color: var(--ink); font-weight: 600; }
nav .right { margin-left: auto; display: flex; align-items: center; gap: 22px; font-size: 14px; }

.btn { display: inline-flex; align-items: center; justify-content: center; height: 44px; padding: 0 22px; border-radius: 999px; background: var(--ink); color: var(--paper); font-size: 14px; font-weight: 500; border: 1px solid var(--ink); white-space: nowrap; }
nav .btn { height: 40px; padding: 0 20px; }
.btn-line { background: transparent; color: var(--ink); }

.wrap { width: var(--frame); margin: 0 auto; }
.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gap); }

/* 和首页同一束窗光：页头上方有光影，往下淡进纸色（site.js 画）；段落进入视野时渐显，节奏同首页 */
canvas.paper-light { position: absolute; z-index: -1; top: 0; left: 0; width: 100%; height: 100vh; pointer-events: none;
  -webkit-mask-image: linear-gradient(#000 35%, transparent); mask-image: linear-gradient(#000 35%, transparent); }
.rv { opacity: 0; transform: translateY(10px); transition: opacity 1.2s .1s, transform 1.2s .1s; }
.rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .rv { opacity: 1; transform: none; transition: none; } }

/* 字号：只有这几级 */
.cap { font-size: 13px; line-height: 20px; color: var(--ink-3); }
h1.t1 { font-family: var(--serif); font-weight: 900; font-size: 56px; line-height: 1.2; letter-spacing: .02em; }
h2.t2 { font-family: var(--serif); font-weight: 900; font-size: 36px; line-height: 1.3; letter-spacing: .02em; }
.t3 { font-size: 18px; line-height: 28px; font-weight: 600; }
.lead { font-size: 17px; line-height: 30px; color: var(--ink-2); max-width: 36em; }
.body { font-size: 15px; line-height: 26px; color: var(--ink-2); }
.small { font-size: 13px; line-height: 22px; color: var(--ink-3); }

/* 页头与分段：统一左对齐，上下间距只用 24 的倍数 */
.page-head { padding: 168px 0 72px; }
.page-head .lead { margin-top: 24px; }
.page-head .actions { margin-top: 32px; display: flex; gap: 12px; flex-wrap: wrap; }
.sec { padding: 96px 0; border-top: 1px solid var(--rule); }
.sec-head .t2 { margin-top: 12px; }
.sec-head .lead { margin-top: 16px; }

/* 收尾一行：左边一句，右边按钮，同一条中线 */
.cta-row { margin: 0 0 120px; padding: 40px 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-row .t2 { font-size: 28px; }
.cta-row .acts { display: flex; gap: 12px; }

footer.ft { padding: 96px 0 48px; border-top: 1px solid var(--rule); }
.ft .cols { row-gap: 40px; }
.ft .brand { grid-column: span 6; }
.ft .brand img { height: 22px; display: block; }
.ft .brand p { margin-top: 16px; font-size: 13px; line-height: 22px; color: var(--ink-3); max-width: 25em; }
.ft .brand p + p { margin-top: 4px; }
.ft .col { grid-column: span 2; }
.ft h4 { font-size: 13px; line-height: 20px; color: var(--ink-3); font-weight: 400; margin-bottom: 16px; }
.ft ul { list-style: none; display: grid; gap: 12px; font-size: 14px; line-height: 20px; color: var(--ink-2); }
.ft ul a:hover { color: var(--ink); }
.ft .sig { margin-top: 72px; display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--rule); padding-top: 24px; font-size: 12px; color: var(--ink-3); }
.ft .ft-inks { display: flex; } .ft .ft-inks i { width: 16px; height: 8px; display: block; }

dialog.ct { margin: auto; padding: 0; border: 0; border-radius: 14px; background: var(--paper); color: var(--ink); box-shadow: 0 30px 80px rgba(31,37,51,.25); }
dialog.ct::backdrop { background: rgba(31,37,51,.45); backdrop-filter: blur(4px); }
.ct-box { position: relative; width: 320px; max-width: calc(100vw - 32px); padding: 34px 28px 28px; text-align: center; }
.ct-t { font-family: var(--serif); font-weight: 900; font-size: 24px; letter-spacing: .04em; }
.ct-d { margin-top: 8px; font-size: 14px; color: var(--ink-2); }
.ct-qr { display: block; width: 200px; height: 200px; margin: 22px auto 0; padding: 10px; background: #fff; border: 1px solid rgba(31,37,51,.12); border-radius: 10px; }
.ct-h { margin-top: 16px; font-size: 12px; color: var(--ink-3); }
.ct-x { position: absolute; top: 10px; right: 12px; width: 32px; height: 32px; border: 0; background: none; font-size: 22px; line-height: 1; color: var(--ink-3); cursor: pointer; }
.ct-x:hover { color: var(--ink); }

@media (max-width: 960px) {
  nav .links { display: none; }
  h1.t1 { font-size: 44px; }
  .ft .brand { grid-column: span 12; }
  .ft .col { grid-column: span 4; }
}