/* ==========================================================================
   博发真人馆 · 共享样式表 /assets/site.css
   夜间娱乐大厅：墨黑为夜、鎏金为光、粗边框与刻度维持秩序
   ========================================================================== */

/* ---------- 01 复位 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote,
ul, ol, dl, dd { margin: 0; }

ul, ol { padding: 0; }

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

button, input, select, textarea { font: inherit; color: inherit; }

/* ---------- 02 变量 ---------- */
:root {
  --ink: #0B0E12;
  --panel: #131A22;
  --gold: #C9A227;
  --gold-bright: #F2D16B;
  --cinnabar: #C8402F;
  --wine: #6E1F22;
  --jade: #2E7D6B;
  --indigo: #2A2350;
  --paper: #EDE7DA;
  --line: #4A5568;

  --line-soft: rgba(74, 85, 104, 0.5);
  --gold-soft: rgba(201, 162, 39, 0.38);
  --paper-dim: rgba(237, 231, 218, 0.68);
  --paper-faint: rgba(237, 231, 218, 0.42);

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system,
    "Segoe UI", Arial, sans-serif;
  --font-num: "Roboto Condensed", "Oswald", "Arial Narrow", "Helvetica Neue",
    Arial, system-ui, sans-serif;

  --wrap: 1240px;
  --header-h: 68px;
  --gap: clamp(18px, 2.4vw, 32px);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 03 基础排版 ---------- */
body {
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 560px at 10% -10%, rgba(201, 162, 39, 0.10), transparent 62%),
    radial-gradient(880px 520px at 96% 2%, rgba(42, 35, 80, 0.55), transparent 70%),
    repeating-linear-gradient(0deg, rgba(74, 85, 104, 0.09) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(90deg, rgba(74, 85, 104, 0.09) 0 1px, transparent 1px 96px);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 900;
  letter-spacing: 0.03em;
  line-height: 1.16;
  color: var(--paper);
}

h1 { font-size: clamp(34px, 5.4vw, 56px); }
h2 { font-size: clamp(27px, 3.8vw, 40px); }
h3 { font-size: clamp(21px, 2.6vw, 30px); }
h4 { font-size: 23px; }
h5 { font-size: 18px; }
h6 { font-size: 16px; letter-spacing: 0.08em; }

p { max-width: 64ch; }
p + p { margin-top: 0.9em; }

strong { font-weight: 900; color: #fff; }

a { color: var(--gold-bright); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: #fff; }

:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 3px;
}

::selection { background: var(--gold); color: #141005; }

/* 窄体数字与英文标签 */
.num,
.kicker,
.section__index,
.pulse-badge,
.status,
.footer__legal,
.footer__copy,
.footer__contact-key { font-family: var(--font-num); letter-spacing: 0.08em; }

/* ---------- 04 布局工具 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(16px, 3.4vw, 40px);
}

.grid12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}

.col-body { grid-column: span 7; }
.col-note { grid-column: span 3; }
.col-scale { grid-column: span 2; }

.section { padding-block: clamp(36px, 5.5vw, 80px); }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 18px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--line);
  margin-bottom: clamp(20px, 3vw, 34px);
}

.section__index {
  font-size: 13px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.18em;
}

.section__title {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 900;
  letter-spacing: 0.03em;
}

.kicker {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-bright);
}

/* ---------- 05 跳至内容 ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--gold-bright);
  color: #12100A;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: top 0.2s var(--ease);
}

.skip-link:focus { top: 12px; color: #12100A; }

/* ---------- 06 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: linear-gradient(180deg, rgba(19, 26, 34, 0.95), rgba(11, 14, 18, 0.95));
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-decoration: none;
  cursor: pointer;
  transition: box-shadow 0.24s var(--ease), border-color 0.24s var(--ease),
    transform 0.24s var(--ease), color 0.24s var(--ease), background-color 0.24s var(--ease);
}

.btn:hover {
  color: var(--paper);
  border-color: var(--gold);
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px var(--gold-soft), 0 10px 28px -10px rgba(242, 209, 107, 0.55);
}

.btn:active { transform: translateY(0); }

.btn--gold {
  background: linear-gradient(180deg, var(--gold-bright), var(--gold));
  color: #141005;
  border-color: rgba(242, 209, 107, 0.9);
}

.btn--gold:hover {
  color: #141005;
  box-shadow: 0 0 0 1px var(--gold-bright), 0 12px 30px -8px rgba(242, 209, 107, 0.6);
}

.btn--ghost {
  background: transparent;
  border-color: var(--gold-soft);
  color: var(--gold-bright);
}

.btn--red {
  background: linear-gradient(180deg, #D9553F, var(--cinnabar));
  border-color: rgba(255, 255, 255, 0.25);
  color: #fff;
}

/* ---------- 07 头部命令栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(11, 14, 18, 0.98), rgba(13, 17, 22, 0.93));
  border-bottom: 1px solid var(--line-soft);
  box-shadow: 0 1px 0 rgba(201, 162, 39, 0.28), 0 16px 36px -24px rgba(0, 0, 0, 0.95);
}

.site-header__inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.8vw, 26px);
  width: 100%;
  max-width: var(--wrap);
  min-height: var(--header-h);
  margin-inline: auto;
  padding: 9px clamp(14px, 3.4vw, 40px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--paper);
  text-decoration: none;
}

.brand:hover { color: var(--paper); }

.brand__mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  background: linear-gradient(140deg, var(--gold-bright), var(--gold) 55%, #8C6F16);
  color: #100D04;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35),
    0 6px 18px -8px rgba(242, 209, 107, 0.8);
}

.brand__text { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }

.brand__name {
  font-size: 17px;
  font-weight: 900;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.brand__tagline {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--paper-dim);
  white-space: nowrap;
}

.cmdbar { margin-left: auto; }

.cmdbar__list {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.cmdbar__item { display: block; }

.cmdbar__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 11px;
  border: 1px solid transparent;
  color: var(--paper-dim);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease),
    border-color 0.18s var(--ease);
}

.cmdbar__num {
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--gold);
  opacity: 0.85;
}

.cmdbar__label { display: block; }

.cmdbar__link:hover {
  color: var(--gold-bright);
  background: rgba(201, 162, 39, 0.1);
  border-color: var(--gold-soft);
}

.cmdbar__link--featured { color: var(--paper); }

.cmdbar__link--featured::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 3px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold-bright), rgba(242, 209, 107, 0));
}

.cmdbar__link[aria-current="page"] {
  background: linear-gradient(180deg, var(--gold), #A9831C);
  border-color: var(--gold-bright);
  color: #12100A;
}

.cmdbar__link[aria-current="page"] .cmdbar__num { color: #3A2E05; opacity: 0.9; }

.cmdbar__link[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 50%;
  margin-top: -5px;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-right: 7px solid var(--gold-bright);
}

.cmdbar__link[aria-current="page"]::after { display: none; }

.header-side {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.pulse-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border: 1px solid rgba(200, 64, 47, 0.55);
  background: rgba(200, 64, 47, 0.14);
  color: var(--paper);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.pulse-badge__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cinnabar);
  animation: pulse-dot 2.4s infinite;
}

@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(200, 64, 47, 0.55); }
  70% { box-shadow: 0 0 0 9px rgba(200, 64, 47, 0); }
  100% { box-shadow: 0 0 0 0 rgba(200, 64, 47, 0); }
}

.header-cta { padding: 9px 16px; font-size: 13px; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: rgba(19, 26, 34, 0.9);
  color: var(--paper);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.nav-toggle:hover { border-color: var(--gold); color: var(--gold-bright); }

.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: var(--gold-bright);
  transition: transform 0.24s var(--ease), opacity 0.24s var(--ease);
}

.site-header[data-open] .nav-toggle__bars span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle__bars span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 08 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 110px);
  background: linear-gradient(180deg, #0C1015, #070A0D 72%);
  border-top: 2px solid var(--gold);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-bright), transparent);
  opacity: 0.5;
}

.footer__inner {
  max-width: var(--wrap);
  margin-inline: auto;
  padding: clamp(34px, 5vw, 64px) clamp(16px, 3.4vw, 40px) 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr 1.15fr;
  gap: clamp(20px, 3vw, 40px);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer__brand-name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0.06em;
}

.footer__slogan {
  font-size: 14px;
  line-height: 1.8;
  color: var(--paper-dim);
  max-width: 30ch;
}

.footer__head {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
  color: var(--gold-bright);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-soft);
}

.footer__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer__link {
  display: inline-block;
  font-size: 14px;
  color: var(--paper-dim);
  text-decoration: none;
  transition: color 0.18s var(--ease), padding-left 0.18s var(--ease);
}

.footer__link:hover { color: var(--gold-bright); padding-left: 5px; }

.footer__contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-dim);
}

.footer__contact-key {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.footer__bottom {
  margin-top: clamp(28px, 4vw, 48px);
  padding: 16px 0 24px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  font-size: 13px;
  color: var(--paper-dim);
}

.footer__copy { font-size: 13px; }
.footer__legal { font-size: 13px; color: var(--paper-dim); }

/* ---------- 09 内容组件 ---------- */
.band {
  position: relative;
  display: flex;
  align-items: center;
  min-height: clamp(150px, 24vh, 260px);
  padding-block: clamp(24px, 3.4vw, 46px);
  background: linear-gradient(90deg, var(--wine), #3A1114 58%, var(--ink));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.band--indigo { background: linear-gradient(90deg, var(--indigo), #191538 58%, var(--ink)); }
.band--jade { background: linear-gradient(90deg, #17453B, #0F2A24 58%, var(--ink)); }

.band__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: clamp(14px, 2.6vw, 40px);
}

.band__num {
  font-family: var(--font-num);
  font-size: clamp(38px, 6.4vw, 84px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: 0.02em;
  color: var(--gold-bright);
  text-shadow: 0 0 26px rgba(242, 209, 107, 0.35);
}

.band__text {
  font-size: clamp(15px, 1.4vw, 19px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--paper);
  max-width: 46ch;
}

.frame {
  position: relative;
  padding: clamp(20px, 3vw, 42px);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(19, 26, 34, 0.92), rgba(11, 14, 18, 0.96));
  box-shadow: 0 24px 60px -40px #000, inset 0 0 0 1px rgba(74, 85, 104, 0.35);
}

.frame::before {
  content: "";
  position: absolute;
  inset: 9px;
  border: 1px solid var(--gold-soft);
  pointer-events: none;
}

.frame__corner {
  position: absolute;
  width: 15px;
  height: 15px;
  border: 2px solid var(--gold-bright);
  pointer-events: none;
}

.frame__corner--tl { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.frame__corner--tr { top: -1px; right: -1px; border-left: 0; border-bottom: 0; }
.frame__corner--bl { bottom: -1px; left: -1px; border-right: 0; border-top: 0; }
.frame__corner--br { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

.media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    linear-gradient(160deg, rgba(42, 35, 80, 0.55), rgba(11, 14, 18, 0.95) 62%),
    repeating-linear-gradient(135deg, rgba(74, 85, 104, 0.18) 0 2px, transparent 2px 12px);
}

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

.media--wide { aspect-ratio: 21 / 9; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--tall { aspect-ratio: 3 / 4; }

.media__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 7px 13px;
  background: rgba(11, 14, 18, 0.84);
  border-top: 1px solid var(--gold-soft);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--paper-dim);
}

.rail {
  position: relative;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(19, 26, 34, 0.55), rgba(11, 14, 18, 0.2));
}

.rail__track {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 20px 0;
  scrollbar-width: thin;
}

.rail__track::-webkit-scrollbar { height: 8px; }
.rail__track::-webkit-scrollbar-track { background: rgba(74, 85, 104, 0.25); }
.rail__track::-webkit-scrollbar-thumb { background: var(--gold-soft); }

.rail__card {
  flex: 0 0 clamp(220px, 24vw, 300px);
  scroll-snap-align: start;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 18px;
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease),
    box-shadow 0.24s var(--ease);
}

.rail__card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: 0 18px 34px -24px rgba(242, 209, 107, 0.6);
}

.rail__nav {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  padding: 10px 0;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  background: rgba(19, 26, 34, 0.85);
  color: var(--paper-dim);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease),
    background-color 0.18s var(--ease);
}

.chip:hover { border-color: var(--gold); color: var(--paper); }

.chip[aria-pressed="true"] {
  background: linear-gradient(180deg, var(--gold), #A9831C);
  border-color: var(--gold-bright);
  color: #12100A;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--paper-dim);
}

.status::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--line);
}

.status--jade::before {
  background: var(--jade);
  box-shadow: 0 0 0 3px rgba(46, 125, 107, 0.25);
}

.status--cinnabar::before {
  background: var(--cinnabar);
  box-shadow: 0 0 0 3px rgba(200, 64, 47, 0.25);
}

.breadcrumbs {
  font-size: 13px;
  color: var(--paper-dim);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.breadcrumbs a { color: var(--gold); text-decoration: none; }
.breadcrumbs a:hover { color: var(--gold-bright); text-decoration: underline; }

/* ---------- 10 章节索引与返回顶部 ---------- */
.toc { position: sticky; top: calc(var(--header-h) + 24px); font-size: 14px; }

.toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--line);
}

.toc__link {
  display: block;
  padding: 8px 12px 8px 14px;
  margin-left: -3px;
  border-left: 3px solid transparent;
  color: var(--paper-dim);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease),
    background-color 0.2s var(--ease);
}

.toc__link:hover { color: var(--gold-bright); }

.toc__link[aria-current="true"] {
  color: var(--gold-bright);
  border-left-color: var(--gold-bright);
  background: linear-gradient(90deg, rgba(201, 162, 39, 0.16), transparent);
}

.to-top {
  position: fixed;
  right: clamp(12px, 3vw, 28px);
  bottom: clamp(12px, 3vw, 28px);
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--gold-soft);
  background: rgba(19, 26, 34, 0.94);
  color: var(--paper);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.06em;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease),
    border-color 0.24s var(--ease);
}

.to-top[data-visible] { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { border-color: var(--gold-bright); }

.to-top__meter {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold-bright);
}

/* ---------- 11 显现协议 ---------- */
[data-js] [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease);
}

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

/* ---------- 12 响应式 ---------- */
@media (max-width: 1160px) {
  .site-header__inner {
    flex-wrap: nowrap;
    gap: 12px;
  }

  .brand { flex: 1 1 auto; min-width: 0; }

  .header-side { order: 2; margin-left: 0; }

  .nav-toggle { display: inline-flex; order: 3; margin-left: 0; }

  .cmdbar {
    order: 4;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    margin-left: 0;
    max-height: 0;
    overflow: hidden;
    background: linear-gradient(180deg, #0F151B, #0B0E12);
    border-top: 1px solid var(--line-soft);
    border-bottom: 1px solid var(--line-soft);
    transition: max-height 0.32s var(--ease);
  }

  .site-header[data-open] .cmdbar {
    max-height: min(78vh, 560px);
    overflow-y: auto;
    box-shadow: 0 26px 50px -30px rgba(0, 0, 0, 0.95);
  }

  .cmdbar__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px clamp(16px, 3.4vw, 40px) 16px;
  }

  .cmdbar__item { border-bottom: 1px solid var(--line-soft); }
  .cmdbar__item:last-child { border-bottom: 0; }

  .cmdbar__link {
    padding: 14px 4px;
    font-size: 16px;
    justify-content: flex-start;
  }

  .cmdbar__num { font-size: 12px; min-width: 24px; }

  .cmdbar__link--featured::after {
    left: 4px;
    right: auto;
    width: 28px;
    bottom: 10px;
  }

  .cmdbar__link[aria-current="page"]::before {
    left: auto;
    right: 12px;
    border-right: 0;
    border-left: 7px solid var(--gold-bright);
  }

  .grid12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .col-body { grid-column: span 12; }
  .col-note { grid-column: span 12; }
  .col-scale { display: none; }

  .toc { position: static; margin-bottom: 24px; }
}

@media (max-width: 960px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .brand__tagline { display: none; }
  .brand__name { font-size: 16px; }
  .pulse-badge { font-size: 10px; padding: 5px 8px; letter-spacing: 0.08em; }
  .header-cta { display: none; }
}

@media (max-width: 560px) {
  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
  .rail__card { flex: 0 0 78vw; }
  .band__inner { gap: 12px; }
}

/* ---------- 13 无障碍与降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  html { scroll-behavior: auto; }

  [data-js] [data-reveal] { opacity: 1; transform: none; }
  .btn:hover { transform: none; }
  .rail__card:hover { transform: none; }
  .footer__link:hover { padding-left: 0; }
}

@media print {
  .site-header, .site-footer, .to-top, .skip-link { display: none !important; }
  body { background: #fff; color: #111; }
}