/* 小吴乐意品牌规范站 · 演示站样式（组件样式来自 brand.css） */
body { margin: 0; background: var(--xw-bg); color: var(--xw-fg); font: 15px/1.7 var(--xw-font); }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, p, blockquote, figure { margin: 0; }
button { font: inherit; color: inherit; cursor: pointer; -webkit-tap-highlight-color: transparent; }
img { display: block; }
code { font-family: var(--xw-mono); }
[hidden] { display: none !important; }

.wrap { width: min(1120px, calc(100% - 64px)); margin-inline: auto; }
.eyebrow { font: 11px/1.5 var(--xw-mono); letter-spacing: .16em; color: var(--xw-muted); text-transform: uppercase; }
.arrow { font-size: 17px; line-height: 1; }
:focus-visible { outline: 3px solid var(--xw-accent); outline-offset: 5px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}
html { scroll-behavior: smooth; scroll-padding-top: 90px; }

/* 头部 */
.site-header { height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--xw-line); }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 15px; }
.site-nav { display: flex; gap: 24px; }
.site-nav a { color: var(--xw-muted); font-size: 13px; padding-block: 10px; }
.site-nav a:hover { color: var(--xw-accent); }
.theme-toggle { border: 1px solid var(--xw-line); background: var(--xw-surface); border-radius: 50%; width: 42px; height: 42px; font-size: 18px; flex-shrink: 0; }

/* 首屏 */
.hero { display: grid; grid-template-columns: 1.4fr 1fr; gap: 70px; align-items: center; padding-block: 72px 60px; }
.hello { display: inline-flex; align-items: center; gap: 9px; margin-bottom: 20px; font-size: 12px; color: var(--xw-muted); }
h1 { font-size: clamp(42px, 5vw, 62px); line-height: 1.2; font-weight: 750; letter-spacing: -.05em; }
h1 span { color: var(--xw-accent); white-space: nowrap; }
.hero-eyebrow { margin-top: 20px; }
.hero-copy { color: var(--xw-muted); margin-top: 12px; max-width: 500px; line-height: 1.9; }
.hero-copy code { font-size: 13px; background: var(--xw-soft); padding: 1px 6px; border-radius: 4px; }
.hero-actions { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.hero-side { position: relative; justify-self: center; width: min(320px, 100%); }
.hero-frame { width: 100%; }
.frame-demo { display: grid; place-items: center; background: var(--xw-fg); color: var(--xw-bg); }
.frame-demo .xw-mark-lg { font: 700 110px/1 var(--xw-mono); letter-spacing: -.05em; }
.hero-label { position: absolute; bottom: 46px; left: -26px; padding: 11px 18px; background: var(--xw-surface); border: 1px solid var(--xw-line); border-radius: 30px; color: var(--xw-green); font-size: 12px; transform: rotate(-5deg); box-shadow: 0 5px 16px #00000006; }

/* 引言条 */
.quote-strip { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 23px 0; border-block: 1px solid var(--xw-line); }

/* 节 */
.section { padding-top: 56px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.section-heading h2 { font-size: 25px; font-weight: 650; letter-spacing: -.02em; margin-top: 6px; }
.section-note { color: var(--xw-muted); font-size: 12px; }

/* 色彩 */
.swatch-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.swatch { display: flex; flex-direction: column; align-items: stretch; gap: 0; padding: 0; overflow: hidden; text-align: left; background: var(--xw-surface); border: 1px solid var(--xw-line); border-radius: 13px; transition: transform .18s ease, border-color .18s ease; }
.swatch:hover { border-color: var(--xw-accent); transform: translateY(-3px); }
.swatch-chip { display: block; height: 74px; border-bottom: 1px solid var(--xw-line); }
.swatch-meta { display: grid; gap: 2px; padding: 12px 14px 14px; }
.swatch-meta strong { font-size: 13px; font-weight: 650; }
.swatch-meta code { font-size: 11px; color: var(--xw-accent); letter-spacing: .04em; }
.swatch-meta small { font-size: 11px; color: var(--xw-muted); }
.dark-row { margin-top: 20px; display: grid; gap: 12px; }
.dark-chips { display: flex; flex-wrap: wrap; gap: 10px; }
.dark-chip { display: inline-flex; align-items: center; gap: 9px; padding: 8px 12px 8px 8px; background: var(--xw-surface); border: 1px solid var(--xw-line); border-radius: 9px; font: 11px/1.5 var(--xw-mono); color: var(--xw-muted); transition: border-color .18s ease; }
.dark-chip:hover { border-color: var(--xw-accent); }
.dark-chip span { width: 26px; height: 26px; border-radius: 7px; border: 1px solid var(--xw-line); }
.contrast-note { margin-top: 20px; }
.contrast-note b { color: var(--xw-accent); font-size: 16px; align-self: center; }
.contrast-note strong { font-weight: 700; }

/* 字体 */
.type-stack { display: grid; gap: 14px; }
.specimen { background: var(--xw-surface); border: 1px solid var(--xw-line); border-radius: 13px; padding: 18px 20px; }
.spec-label { font: 10px/1.5 var(--xw-mono); letter-spacing: .12em; color: var(--xw-muted); margin-bottom: 10px; }
.spec-body { font-size: 15px; }
.spec-h1 { font-size: clamp(34px, 4vw, 52px); line-height: 1.2; font-weight: 750; letter-spacing: -.05em; }
.spec-h2 { font-size: 25px; font-weight: 650; letter-spacing: -.02em; }
.spec-mono { font: 13px/1.8 var(--xw-mono); letter-spacing: .01em; overflow-wrap: anywhere; }
.spec-serif { font: 22px/1.6 var(--xw-serif); }

/* 组件 */
.comp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.comp-block { background: var(--xw-bg); border: 1px dashed var(--xw-line); border-radius: 15px; padding: 18px; }
.comp-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.comp-head h3 { font-size: 14px; font-weight: 650; }
.comp-copy { min-height: 36px; padding: 6px 12px; font-size: 12px; }
.comp-stage { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.comp-note { margin-top: 14px; color: var(--xw-muted); font-size: 11px; line-height: 1.7; }
.demo-card { flex: 1 1 180px; }
.demo-card h4 { font-size: 13px; font-weight: 650; }
.demo-card p { color: var(--xw-muted); font-size: 12px; margin: 6px 0 12px; }
.art-stage { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.art-stage .xw-art { min-height: 104px; }

/* 版式 */
.layout-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.wrap-diagram { margin-top: 12px; border: 1px solid var(--xw-line); border-radius: 9px; background: var(--xw-soft); padding: 26px 14px; text-align: center; font: 11px/1.6 var(--xw-mono); color: var(--xw-muted); display: grid; gap: 6px; }
.wrap-diagram i { font-style: normal; font-size: 10px; opacity: .75; }
.rhythm-list { list-style: none; margin: 12px 0 0; padding: 0; display: grid; gap: 9px; }
.rhythm-list li { font-size: 12px; color: var(--xw-muted); }
.rhythm-list code { font-size: 11px; color: var(--xw-accent); background: var(--xw-soft); padding: 1px 6px; border-radius: 4px; }
.index-demo { margin-top: 12px; font: 12px/2 var(--xw-mono); color: var(--xw-muted); }
.index-demo b { color: var(--xw-accent); font-weight: 400; }

/* 标志 */
.marks-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 16px; }
.mark-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.mark-outline { background: var(--xw-surface); color: var(--xw-fg); border: 1px solid var(--xw-fg); }
.mark-green { background: var(--xw-green); color: #f3f0de; }
.mark-btc { background: var(--xw-btc); color: #252623; font-family: var(--xw-mono); }
.hello-demo { display: inline-flex; align-items: center; gap: 9px; font-size: 13px; color: var(--xw-muted); }

/* 规则 */
.rules-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 24px; counter-reset: rule; }
.rules-list li { counter-increment: rule; display: flex; gap: 14px; align-items: baseline; padding: 13px 2px; border-bottom: 1px solid var(--xw-line); }
.rules-list li::before { content: counter(rule, decimal-leading-zero); font: 11px/1.5 var(--xw-mono); color: var(--xw-accent); }
.rules-list b { font-size: 13px; font-weight: 650; white-space: nowrap; }
.rules-list span { color: var(--xw-muted); font-size: 12px; }
.voice-note { margin-top: 20px; }
.voice-note b { color: var(--xw-accent); font-size: 16px; align-self: center; }

/* 资源 */
.res-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.res-card h3 { font-size: 21px; font-weight: 650; margin: 8px 0; }
.res-card > p { color: var(--xw-muted); font-size: 13px; }
.res-code { display: block; margin: 16px 0; padding: 13px 15px; background: var(--xw-soft); border-radius: 8px; font-size: 13px; overflow-wrap: anywhere; }
.res-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* 页脚 */
footer { margin-top: 64px; }
.footer-top { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 25px 0; border-top: 1px solid var(--xw-line); }
.footer-top strong { font-size: 14px; font-weight: 600; }
.footer-meta { font: 11px/1.5 var(--xw-mono); color: var(--xw-muted); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; padding: 20px 0 36px; font-size: 11px; color: var(--xw-muted); }
.footer-bottom a:hover { color: var(--xw-accent); }

/* Toast */
.toast { position: fixed; bottom: 25px; left: 50%; transform: translateX(-50%); background: var(--xw-fg); color: var(--xw-bg); border-radius: 9px; padding: 13px 22px; z-index: 100; width: max-content; max-width: calc(100% - 32px); font-size: 13px; box-shadow: 0 4px 20px #0002; }

/* 响应式 */
@media (max-width: 1000px) {
  .hero { gap: 40px; }
  .swatch-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .comp-grid, .res-grid { grid-template-columns: 1fr; }
  .layout-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .marks-grid { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .site-header { height: auto; flex-wrap: wrap; padding-block: 14px; }
  .site-nav { gap: 16px; order: 3; width: 100%; }
  .hero { grid-template-columns: 1fr; padding-block: 44px 36px; }
  .hero-side { margin-inline: auto; }
  .quote-strip blockquote { font-size: 18px; }
  .quote-strip .eyebrow { display: none; }
  .section { padding-top: 40px; }
  .section-note { display: none; }
  .rules-list { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; align-items: start; }
}
@media (max-width: 440px) {
  .wrap { width: calc(100% - 40px); }
  .swatch-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .layout-grid { grid-template-columns: 1fr; }
  .hero-label { left: 0; }
  .site-nav a:nth-child(n+5) { display: none; }
}