/* ============================================================
   万豪斗地主 · 共享样式表 /assets/site.css
   夜场牌桌 × 战绩档案室 —— 命令栏 + Bento + 框景刻度体系
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body,
h1, h2, h3, h4, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }

ul, ol { padding: 0; list-style: none; }

img, svg, video { display: block; max-width: 100%; height: auto; }

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

a { color: inherit; }

table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  --night: #0B241C;
  --night-deep: #071A14;
  --paper: #F4F0E6;
  --paper-warm: #EAE3D3;
  --felt: #1B6B52;
  --felt-deep: #114536;
  --gold: #C9A227;
  --gold-bright: #EBCB74;
  --red: #B23A34;
  --ink: #171310;
  --sage: #6F8B80;
  --glass: rgba(46, 125, 107, 0.18);
  --glass-strong: rgba(46, 125, 107, 0.32);
  --line: rgba(23, 19, 16, 0.14);
  --line-night: rgba(244, 240, 230, 0.14);

  --font-display: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "DIN Alternate", "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  --step-1: 12px;
  --step-2: 14px;
  --step-3: 18px;
  --step-4: 24px;
  --step-5: 34px;
  --step-6: 52px;
  --step-7: 84px;

  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 16px;
  --sp-4: 24px;
  --sp-5: 32px;
  --sp-6: 48px;
  --sp-7: 72px;
  --sp-8: 104px;

  --radius: 10px;
  --radius-lg: 16px;
  --shell: 1280px;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --t-fast: 180ms;
  --t-mid: 240ms;
}

/* ---------- 3. 中文排版与基础 ---------- */
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background-color: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

@media (min-width: 720px) {
  body { font-size: 17px; }
}

:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 2px;
  border-radius: 2px;
}

::selection {
  background: var(--gold);
  color: var(--night);
}

.display,
.h2,
.h3 {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.16;
  letter-spacing: 0.01em;
}

.display { font-size: clamp(34px, 7vw, var(--step-6)); }
.display--xl { font-size: clamp(52px, 12vw, var(--step-7)); line-height: 1.02; }
.h2 { font-size: clamp(26px, 4vw, var(--step-5)); }
.h3 { font-size: var(--step-4); }

.label {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sage);
}

.num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 4. 布局容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 16px;
}

@media (min-width: 720px) { .wrap { padding: 0 24px; } }
@media (min-width: 1080px) { .wrap { padding: 0 32px; } }

.wrap--narrow { max-width: 720px; }

.prose { max-width: 720px; }
.prose p + p { margin-top: 1em; }
.prose h2 { margin: var(--sp-5) 0 var(--sp-3); }
.prose h3 { margin: var(--sp-4) 0 var(--sp-2); }
.prose ul, .prose ol { margin: var(--sp-3) 0; padding-left: 1.25em; }
.prose ul li { list-style: square; }
.prose ol li { list-style: decimal; }
.prose li + li { margin-top: 0.4em; }

/* ---------- 5. 区块底色 ---------- */
.band { padding: var(--sp-6) 0; }
@media (min-width: 720px) { .band { padding: var(--sp-7) 0; } }

.band--paper { background: var(--paper); }
.band--paper-warm { background: var(--paper-warm); }
.band--night { background: var(--night); color: rgba(244, 240, 230, 0.86); }
.band--felt { background: var(--felt); color: var(--paper); }

.band--night .label,
.band--felt .label { color: var(--gold-bright); }

/* ---------- 6. 区块标题与刻度 ---------- */
.section-head {
  display: grid;
  gap: var(--sp-2);
  padding-bottom: var(--sp-3);
  margin-bottom: var(--sp-4);
  border-bottom: 1px solid var(--line);
  position: relative;
}

.section-head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 64px;
  height: 2px;
  background: var(--gold);
}

.section-head__index {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.08em;
  color: var(--gold);
}

.section-head__title { font-family: var(--font-display); font-weight: 300; font-size: var(--step-5); line-height: 1.2; }

.section-head__note { font-size: var(--step-2); color: var(--sage); max-width: 62ch; }

.tick-rule {
  height: 6px;
  background-image: repeating-linear-gradient(90deg, var(--gold) 0 1px, transparent 1px 22px);
  opacity: 0.5;
}

.tick-rule--footer { background-color: var(--night-deep); }

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  transition: transform var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease);
}

.btn--gold {
  background: var(--gold);
  color: var(--night);
  border-color: var(--gold);
}
.btn--gold:hover {
  background: var(--gold-bright);
  border-color: var(--gold-bright);
  box-shadow: 0 6px 18px rgba(201, 162, 39, 0.3);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--paper);
  border-color: rgba(235, 203, 116, 0.5);
}
.btn--ghost:hover {
  background: var(--glass);
  border-color: var(--gold-bright);
  color: #fff;
  transform: translateY(-1px);
}

.btn--ink {
  background: transparent;
  color: var(--ink);
  border-color: rgba(23, 19, 16, 0.28);
}
.btn--ink:hover {
  background: rgba(201, 162, 39, 0.14);
  border-color: var(--gold);
  transform: translateY(-1px);
}

.btn-row { display: flex; flex-wrap: wrap; gap: var(--sp-2); }

/* ---------- 8. 面包屑 ---------- */
.breadcrumbs {
  padding: var(--sp-3) 0;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.06em;
  color: var(--sage);
}

.breadcrumbs__list { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.breadcrumbs__list li + li::before { content: "/"; margin-right: 6px; color: rgba(111, 139, 128, 0.7); }
.breadcrumbs a { color: var(--sage); text-decoration: none; }
.breadcrumbs a:hover { color: var(--felt); }

/* ---------- 9. 图片容器（供页面阶段放置图片） ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(201, 162, 39, 0.28);
  background: linear-gradient(150deg, var(--felt-deep), var(--night));
  aspect-ratio: 16 / 9;
}

.media-frame img { width: 100%; height: 100%; object-fit: cover; }

.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--table { aspect-ratio: 3 / 2; border-radius: var(--radius); }

.media-frame__tag {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 3px 8px;
  border-radius: 3px;
  background: var(--gold);
  color: var(--night);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 24px 12px 10px;
  background: linear-gradient(0deg, rgba(7, 26, 20, 0.88), rgba(7, 26, 20, 0));
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.frame-corners::before,
.frame-corners::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--gold);
  opacity: 0.75;
  pointer-events: none;
}
.frame-corners::before { top: 8px; left: 8px; border-right: 0; border-bottom: 0; }
.frame-corners::after { right: 8px; bottom: 8px; border-left: 0; border-top: 0; }

/* ---------- 10. 卡片 / Bento / 面板 ---------- */
.card {
  position: relative;
  padding: var(--sp-4);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper);
}

.card--glass {
  background: var(--glass-strong);
  border-color: rgba(244, 240, 230, 0.24);
  color: var(--paper);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.bento {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
}
@media (min-width: 720px) {
  .bento { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 20px; }
}
@media (min-width: 1080px) {
  .bento { grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--sp-4); }
}

.bento__cell {
  position: relative;
  grid-column: span 1;
  padding: var(--sp-4);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper);
  transition: transform var(--t-mid) var(--ease),
              box-shadow var(--t-mid) var(--ease),
              border-color var(--t-mid) var(--ease);
}
@media (min-width: 720px) { .bento__cell { grid-column: span 2; } }
@media (min-width: 1080px) { .bento__cell { grid-column: span 4; } }

.bento__cell:hover {
  transform: translateY(-3px);
  border-color: rgba(201, 162, 39, 0.55);
  box-shadow: 0 14px 32px rgba(11, 36, 28, 0.16);
}

@media (min-width: 720px) { .bento__cell--wide { grid-column: span 6; } }
@media (min-width: 1080px) { .bento__cell--wide { grid-column: span 8; } }

.bento__cell--focus {
  background: var(--felt);
  color: var(--paper);
  border-color: rgba(235, 203, 116, 0.35);
}
@media (min-width: 720px) { .bento__cell--focus { grid-column: span 6; } }
@media (min-width: 1080px) { .bento__cell--focus { grid-column: span 6; } }

.bento__cell--tall { min-height: 220px; }
@media (min-width: 1080px) { .bento__cell--tall { min-height: 280px; } }

/* ---------- 11. 专题研究板 ---------- */
.board {
  display: grid;
  gap: var(--sp-3);
  padding: var(--sp-4);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius-lg);
  background: var(--paper);
}

.board__label {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.08em;
  color: var(--gold);
}

.board__abstract { font-size: var(--step-3); line-height: 1.7; }

.board__terms { display: grid; gap: 6px; }

.board__term {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  align-items: baseline;
  font-size: var(--step-2);
}

.board__term-key {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--felt);
}

.board__evidence {
  margin-top: var(--sp-2);
  padding-top: var(--sp-3);
  border-top: 1px dashed var(--line);
  font-size: var(--step-2);
  color: var(--sage);
}

.board__further { font-size: var(--step-2); }
.board__further a {
  color: var(--felt);
  text-decoration: underline;
  text-decoration-color: rgba(201, 162, 39, 0.6);
  text-underline-offset: 3px;
}
.board__further a:hover { color: var(--night); text-decoration-color: var(--gold); }

/* ---------- 12. 小标签 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  background: rgba(201, 162, 39, 0.16);
  color: var(--night);
  border: 1px solid rgba(201, 162, 39, 0.4);
}
.badge--gold { background: var(--gold); color: var(--night); border-color: var(--gold); }
.badge--red { background: rgba(178, 58, 52, 0.14); color: var(--red); border-color: rgba(178, 58, 52, 0.42); }

/* ---------- 13. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -72px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--gold-bright);
  color: var(--night);
  border-radius: 0 0 var(--radius) var(--radius);
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: top var(--t-fast) var(--ease);
}
.skip-link:focus { top: 0; }

/* ---------- 14. 头部命令栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--night);
  color: var(--paper);
  border-bottom: 1px solid rgba(201, 162, 39, 0.35);
  transition: box-shadow var(--t-mid) var(--ease), background-color var(--t-mid) var(--ease);
}

.site-header[data-scrolled] {
  background: var(--night-deep);
  box-shadow: 0 12px 32px rgba(7, 26, 20, 0.45);
}

.site-header::after {
  content: "";
  display: block;
  height: 5px;
  background-image: repeating-linear-gradient(90deg, var(--gold) 0 1px, transparent 1px 26px);
  opacity: 0.5;
}

.command-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--sp-3);
  max-width: var(--shell);
  margin: 0 auto;
  padding: 10px 16px;
  min-height: 58px;
}

@media (min-width: 720px) {
  .command-bar {
    grid-template-columns: auto minmax(0, 1fr) auto;
    padding: 10px 24px;
    min-height: 66px;
  }
}

@media (min-width: 1080px) {
  .command-bar { padding: 10px 32px; min-height: 74px; }
}

/* 品牌锁定 */
.brand-lockup {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 0;
  color: var(--paper);
  text-decoration: none;
}

.brand-mark {
  position: relative;
  flex: 0 0 auto;
  width: 26px;
  height: 34px;
  border: 1px solid rgba(201, 162, 39, 0.65);
  border-radius: 4px;
  background: linear-gradient(160deg, #FBF7EC, #E4DCC8);
  box-shadow: inset 0 0 0 1px rgba(11, 36, 28, 0.1);
}

.brand-mark::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--red);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 1px rgba(23, 19, 16, 0.25);
}

.brand-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 5px;
  width: 12px;
  height: 1px;
  background: var(--night);
  transform: translateX(-50%);
  opacity: 0.45;
}

.brand-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }

.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.06em;
  line-height: 1.1;
  white-space: nowrap;
}

.brand-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold);
  white-space: nowrap;
}

.brand-lockup--footer .brand-name { font-size: 22px; }
.brand-lockup--footer .brand-tag { color: var(--gold-bright); }

/* 移动按钮 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  justify-self: end;
  padding: 8px 12px;
  border: 1px solid rgba(201, 162, 39, 0.45);
  border-radius: var(--radius);
  background: var(--glass);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.08em;
  transition: background-color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.nav-toggle:hover { background: var(--glass-strong); border-color: var(--gold-bright); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 10px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--t-fast) var(--ease), top var(--t-fast) var(--ease);
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { top: 8px; }

.site-header[data-open] .nav-toggle__bars::before { top: 4px; transform: rotate(45deg); }
.site-header[data-open] .nav-toggle__bars::after { top: 4px; transform: rotate(-45deg); }

@media (min-width: 720px) { .nav-toggle { display: none; } }

/* 导航 */
.site-nav { display: none; }

.site-header[data-open] .site-nav {
  display: block;
  grid-column: 1 / -1;
  margin-top: 4px;
  padding-top: 8px;
  border-top: 1px solid rgba(201, 162, 39, 0.25);
}

@media (min-width: 720px) {
  .site-nav { display: block; }
  .site-header[data-open] .site-nav {
    grid-column: auto;
    margin-top: 0;
    padding-top: 0;
    border-top: 0;
  }
}

.nav-list { display: flex; flex-direction: column; }

@media (min-width: 720px) {
  .nav-list {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2px;
  }
}

.nav-link {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
  padding: 12px 8px;
  border-left: 2px solid transparent;
  border-bottom: 1px solid rgba(244, 240, 230, 0.08);
  color: rgba(244, 240, 230, 0.78);
  font-size: 15px;
  text-decoration: none;
  transition: color var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease);
}

.nav-index {
  min-width: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.nav-link:hover {
  color: #fff;
  background: var(--glass);
  border-left-color: var(--gold);
}

.nav-link:hover .nav-index,
.nav-link:focus-visible .nav-index { color: var(--gold-bright); }

.nav-link[aria-current="page"] {
  color: #fff;
  font-weight: 600;
  background: rgba(201, 162, 39, 0.14);
  border-left-color: var(--gold);
}

.nav-link[aria-current="page"] .nav-index { color: var(--gold-bright); }

@media (min-width: 720px) {
  .nav-link {
    padding: 6px 10px;
    border-left: 0;
    border-bottom: 2px solid transparent;
    font-size: 14px;
  }
  .nav-link:hover {
    border-left-color: transparent;
    border-bottom-color: var(--gold);
  }
  .nav-link[aria-current="page"] {
    border-left-color: transparent;
    border-bottom-color: var(--gold);
  }
}

/* 状态块 */
.bar-meta { display: none; }

@media (min-width: 1080px) {
  .bar-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
    text-align: right;
  }
}

.bar-meta__page {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold-bright);
}

.bar-meta__status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(244, 240, 230, 0.7);
}

.status-dot {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-bright);
  box-shadow: 0 0 0 3px rgba(235, 203, 116, 0.18);
}

/* ---------- 15. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: var(--sp-7);
  background: var(--night);
  color: rgba(244, 240, 230, 0.82);
}

.footer-grid {
  display: grid;
  gap: var(--sp-5);
  padding-top: var(--sp-6);
  padding-bottom: var(--sp-5);
}

@media (min-width: 720px) {
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--sp-5) var(--sp-4);
  }
}

@media (min-width: 1080px) {
  .footer-grid {
    grid-template-columns: 1.2fr 2.4fr 1.3fr;
    gap: var(--sp-6);
  }
}

.footer-brand { display: grid; gap: var(--sp-2); align-content: start; }

.footer-tagline {
  font-family: var(--font-display);
  font-size: var(--step-3);
  color: var(--paper);
}

.footer-note {
  font-size: var(--step-2);
  color: var(--sage);
  max-width: 34ch;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-4);
}

@media (min-width: 720px) { .footer-nav { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

.footer-col { min-width: 0; }

.footer-col__title {
  margin-bottom: var(--sp-2);
  padding-bottom: var(--sp-2);
  border-bottom: 1px solid rgba(201, 162, 39, 0.3);
  font-family: var(--font-mono);
  font-size: var(--step-1);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
}

.footer-col__list { display: grid; gap: 2px; }

.footer-link {
  display: inline-block;
  padding: 5px 0;
  color: rgba(244, 240, 230, 0.78);
  font-size: var(--step-2);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

.footer-link:hover {
  color: var(--gold-bright);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-contact { min-width: 0; }

.contact-list { display: grid; gap: 2px; }

.contact-list__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: var(--sp-2);
  padding: 7px 0;
  border-bottom: 1px solid rgba(244, 240, 230, 0.08);
  font-size: var(--step-2);
  line-height: 1.6;
}

.contact-list__key {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.08em;
  color: var(--sage);
  padding-top: 2px;
}

.contact-value { color: rgba(244, 240, 230, 0.88); word-break: break-word; }

.footer-base {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  padding-top: var(--sp-4);
  padding-bottom: var(--sp-5);
  border-top: 1px solid rgba(244, 240, 230, 0.14);
  font-size: var(--step-1);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  color: rgba(244, 240, 230, 0.55);
}

@media (min-width: 720px) {
  .footer-base {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--sp-3);
  }
}

.footer-copy { margin: 0; }

.footer-base__links { display: flex; flex-wrap: wrap; gap: var(--sp-3); }
.footer-base__links .footer-link { padding: 0; font-family: var(--font-mono); font-size: var(--step-1); letter-spacing: 0.06em; }

.footer-icp { margin: 0; color: rgba(244, 240, 230, 0.5); }

/* ---------- 16. 滚动进度与渐入 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 200;
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--gold), var(--gold-bright) 60%, var(--red));
}

[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
}

[data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 17. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  [data-reveal] { opacity: 1; transform: none; }

  .bento__cell:hover,
  .btn:hover { transform: none; }

  .scroll-progress { display: none; }
}