/* ============================================================
   九博娱乐汇 · 共享外壳样式  /assets/site.css
   墨夜底 + 鎏金线 + 朱砂点 + 青玉层 · 夜航档案册
   ============================================================ */

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

html {
  background: var(--ink);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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

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

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

a { color: inherit; text-decoration: none; }

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

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

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩 */
  --ink: #0A1024;
  --ink-2: #131B36;
  --ink-3: #1A2444;
  --gold: #D9A93B;
  --gold-soft: #F0D48A;
  --cinnabar: #C8402F;
  --jade: #2F9E8F;
  --paper: #F5F1E6;
  --muted: #8C97B2;
  --line: #2A3557;
  --white: #FFFFFF;

  /* 尺寸 */
  --header-h: 78px;
  --edge: clamp(20px, 4.4vw, 64px);
  --shell: 1320px;
  --rail: 220px;
  --shadow-hard: 6px 6px 0 rgba(0, 0, 0, .5);

  /* 字体 */
  --font-display: "Songti SC", "Source Han Serif SC", "Noto Serif SC", "STSong", Georgia, "SimSun", serif;
  --font-body: "PingFang SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Sarasa Mono SC", "Courier New", monospace;

  /* 动效 */
  --dur: .28s;
  --ease: cubic-bezier(.2, .8, .2, 1);
}

@media (max-width: 640px) {
  :root { --header-h: 66px; }
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: clamp(15px, 1.02vw, 17px);
  line-height: 1.85;
  letter-spacing: .01em;
  color: var(--white);
  background-color: var(--ink);
  background-image:
    radial-gradient(900px 520px at 12% -6%, rgba(217, 169, 59, .10), transparent 62%),
    radial-gradient(760px 480px at 92% 6%, rgba(47, 158, 143, .08), transparent 66%),
    radial-gradient(700px 460px at 50% 108%, rgba(200, 64, 47, .07), transparent 70%);
  background-repeat: no-repeat;
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: .04em;
  line-height: 1.3;
  color: var(--white);
}

h1 { font-size: clamp(34px, 5vw, 56px); }
h2 { font-size: clamp(26px, 3.2vw, 40px); }
h3 { font-size: clamp(20px, 2.2vw, 28px); }
h4 { font-size: clamp(17px, 1.6vw, 20px); }

p { max-width: 78ch; }

strong, b { color: var(--gold-soft); font-weight: 700; }

code, kbd, samp {
  font-family: var(--font-mono);
  font-size: .92em;
  color: var(--gold-soft);
}

::selection {
  background: var(--cinnabar);
  color: var(--white);
}

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

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

.muted { color: var(--muted); }

.lead {
  font-size: clamp(16px, 1.3vw, 18.5px);
  line-height: 1.95;
  color: var(--muted);
  max-width: 62ch;
}

/* ---------- 4. 跳至主要内容 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 300;
  padding: 11px 18px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--ink);
  background: var(--gold);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
  transform: translateY(-180%);
  transition: transform var(--dur) var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 5. 顶部滚动进度 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 200;
  width: 100%;
  height: 3px;
  pointer-events: none;
  background: linear-gradient(90deg, var(--gold) 0%, var(--cinnabar) 55%, var(--jade) 100%);
  transform: scaleX(0);
  transform-origin: 0 50%;
}

/* ---------- 6. 头部 ---------- */
.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 150;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition:
    background var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    backdrop-filter var(--dur) var(--ease);
}

.site-header.is-scrolled {
  background: rgba(10, 16, 36, .95);
  border-bottom-color: var(--gold);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(12px, 2vw, 34px);
  width: 100%;
  max-width: var(--shell);
  min-height: var(--header-h);
  margin: 0 auto;
  padding: 0 var(--edge);
}

/* 品牌 */
.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 40px;
  height: 40px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 900;
  line-height: 1;
  color: var(--ink);
  background: var(--gold);
  border: 2px solid var(--gold-soft);
  box-shadow: 4px 4px 0 rgba(200, 64, 47, .65);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  letter-spacing: .08em;
  color: var(--white);
}

.brand-line {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--muted);
}

/* 导航（移动端：下拉抽屉） */
.site-nav {
  position: absolute;
  top: 100%;
  right: 0;
  left: 0;
  max-height: calc(100vh - var(--header-h));
  padding: 14px var(--edge) 28px;
  overflow-y: auto;
  background: linear-gradient(180deg, #0E1730 0%, var(--ink-2) 100%);
  border-bottom: 2px solid var(--gold);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-14px);
  transition:
    opacity var(--dur) var(--ease),
    transform var(--dur) var(--ease),
    visibility var(--dur) var(--ease);
}

.site-nav[data-open] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

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

.nav-link {
  position: relative;
  display: block;
  padding: 15px 2px;
  font-size: 16.5px;
  letter-spacing: .05em;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.nav-link:hover {
  color: var(--white);
  padding-left: 8px;
}

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

.nav-cta {
  margin-top: 20px;
}

.nav-cta .btn {
  width: 100%;
  justify-content: center;
}

/* 移动端目录按钮 */
.nav-toggle {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 9px;
  padding: 10px 14px;
  color: var(--gold-soft);
  background: rgba(19, 27, 54, .72);
  border: 2px solid var(--line);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

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

.nav-toggle-bars {
  display: grid;
  gap: 4px;
  width: 18px;
}

.nav-toggle-bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-toggle-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
}

/* 头部行动按钮组：桌面才出现 */
.header-actions {
  display: none;
  flex: 0 0 auto;
  align-items: center;
  gap: 10px;
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .06em;
  line-height: 1.2;
  border: 2px solid transparent;
  transition:
    transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease),
    background var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.btn-primary {
  color: var(--white);
  background: var(--cinnabar);
  border-color: var(--cinnabar);
  box-shadow: 4px 4px 0 rgba(217, 169, 59, .28);
}

.btn-primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 rgba(217, 169, 59, .42);
}

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

.btn-ghost:hover {
  color: var(--gold-soft);
  background: rgba(217, 169, 59, .10);
  border-color: var(--gold);
}

.btn:active {
  transform: translate(0, 0);
  box-shadow: 2px 2px 0 rgba(217, 169, 59, .3);
}

/* ---------- 8. 页面容器与网格 ---------- */
.main-content {
  padding-top: calc(var(--header-h) + clamp(20px, 4vw, 52px));
}

.doc-container {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--edge);
}

.grid {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--rail { grid-template-columns: minmax(0, 1fr); }

@media (min-width: 901px) {
  .grid--rail { grid-template-columns: var(--rail) minmax(0, 1fr); }
}

@media (max-width: 900px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 9. 面包屑 ---------- */
.breadcrumb {
  padding: 18px 0 0;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "／";
  margin: 0 9px;
  color: var(--line);
}

.breadcrumb-link {
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}

.breadcrumb-link:hover { color: var(--gold-soft); }

.breadcrumb-item[aria-current="page"] { color: var(--gold-soft); }

/* ---------- 10. 章节框架 ---------- */
.section {
  padding: clamp(44px, 6.5vw, 92px) 0;
}

.section + .section {
  border-top: 1px solid var(--line);
}

.section-heading {
  margin-bottom: 18px;
  font-size: clamp(26px, 3.2vw, 40px);
}

.section-index {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: clamp(28px, 5vw, 54px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: rgba(217, 169, 59, .22);
  -webkit-text-stroke: 1.5px var(--gold);
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gold);
}

.kicker::before {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  background: var(--cinnabar);
}

.gold-rule {
  height: 1px;
  margin: 26px 0;
  border: 0;
  background: linear-gradient(90deg, var(--gold) 0%, rgba(217, 169, 59, .18) 45%, rgba(217, 169, 59, 0) 100%);
}

/* ---------- 11. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: .12em;
  line-height: 1.6;
  color: var(--jade);
  background: rgba(47, 158, 143, .10);
  border: 1px solid var(--jade);
}

.tag--gold {
  color: var(--gold-soft);
  background: rgba(217, 169, 59, .10);
  border-color: var(--gold);
}

.tag--cinnabar {
  color: #F0A79C;
  background: rgba(200, 64, 47, .14);
  border-color: var(--cinnabar);
}

/* ---------- 12. 左侧索引导轨 ---------- */
.rail { position: relative; }

.rail-inner {
  position: sticky;
  top: calc(var(--header-h) + 28px);
}

.rail-title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

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

.rail-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
  border-left: 2px solid var(--line);
  transition:
    color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    background var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.rail-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--gold);
}

.rail-link:hover {
  color: var(--white);
  border-left-color: var(--gold);
  transform: translateX(3px);
}

.rail-link.is-active {
  color: var(--gold-soft);
  background: rgba(217, 169, 59, .08);
  border-left-color: var(--cinnabar);
}

@media (max-width: 900px) {
  .rail-inner { position: static; }

  .rail-list {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    gap: 8px;
    padding-bottom: 8px;
    overflow-x: auto;
  }

  .rail-link {
    border-left: 1px solid var(--line);
    border-top: 0;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    white-space: nowrap;
  }

  .rail-link:hover { transform: none; }

  .rail-link.is-active {
    border-color: var(--cinnabar);
    background: rgba(217, 169, 59, .10);
  }
}

/* ---------- 13. 档案卡与面板 ---------- */
.panel {
  padding: clamp(20px, 3vw, 32px);
  background: var(--ink-2);
  border: 1px solid var(--line);
}

.record-card {
  position: relative;
  padding: clamp(18px, 2.6vw, 28px);
  background: var(--ink-2);
  border: 2px solid var(--line);
  transition:
    border-color var(--dur) var(--ease),
    transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.record-card::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: 0;
  height: 2px;
  background: var(--gold-soft);
  transition: width .45s var(--ease);
}

.record-card:hover {
  border-color: var(--gold);
  transform: translate(-3px, -3px);
  box-shadow: 8px 8px 0 rgba(200, 64, 47, .34);
}

.record-card:hover::before {
  width: calc(100% + 4px);
}

/* ---------- 14. 可展开内容组 ---------- */
.disclosure {
  display: block;
}

.disclosure + .disclosure {
  margin-top: -2px;
}

.disclosure-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 16px 20px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 900;
  letter-spacing: .04em;
  text-align: left;
  color: var(--white);
  background: var(--ink-2);
  border: 2px solid var(--line);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.disclosure-trigger::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--gold);
  transition: transform var(--dur) var(--ease);
}

.disclosure-trigger:hover {
  border-color: var(--gold);
}

.disclosure-trigger[aria-expanded="true"] {
  background: var(--ink-3);
  border-color: var(--gold);
}

.disclosure-trigger[aria-expanded="true"]::after {
  transform: rotate(45deg);
}

.disclosure-panel {
  padding: 18px 20px 22px;
  color: var(--muted);
  background: rgba(19, 27, 54, .62);
  border: 2px solid var(--line);
  border-top: 0;
}

.disclosure-panel:not([hidden]) {
  animation: panel-reveal .3s var(--ease) both;
}

@keyframes panel-reveal {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- 15. 图片容器（页面阶段放置占位图） ---------- */
.image-frame {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 9;
  background:
    radial-gradient(circle at 78% 22%, rgba(217, 169, 59, .16), transparent 58%),
    linear-gradient(135deg, var(--ink-2) 0%, #0D1530 58%, rgba(47, 158, 143, .14) 100%);
  border: 2px solid var(--line);
}

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

.image-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(217, 169, 59, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(217, 169, 59, .07) 1px, transparent 1px);
  background-size: 32px 32px;
  mix-blend-mode: screen;
}

.image-frame--wide { aspect-ratio: 21 / 9; }
.image-frame--tall { aspect-ratio: 3 / 4; }
.image-frame--square { aspect-ratio: 1 / 1; }

.media-figure { margin: 0; }

.media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- 16. 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: clamp(16px, 3vw, 36px);
  bottom: clamp(16px, 3vw, 36px);
  z-index: 140;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--gold-soft);
  background: var(--ink-2);
  border: 2px solid var(--gold);
  box-shadow: var(--shadow-hard);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition:
    opacity var(--dur) var(--ease),
    transform var(--dur) var(--ease),
    visibility var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.to-top:hover {
  background: var(--ink-3);
  transform: translateY(-3px);
}

/* ---------- 17. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 9vw, 120px);
  color: var(--muted);
  background-color: var(--ink-2);
  background-image:
    linear-gradient(180deg, rgba(10, 16, 36, 0) 0%, rgba(10, 16, 36, .92) 100%),
    repeating-linear-gradient(90deg, rgba(217, 169, 59, .05) 0 1px, transparent 1px 64px);
  border-top: 2px solid var(--gold);
}

.footer-inner {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(46px, 6vw, 84px) var(--edge) 34px;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(34px, 5vw, 72px);
}

.footer-brand .brand {
  margin-bottom: 18px;
}

.footer-tagline {
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

.footer-meta {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold);
}

.footer-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px 26px;
}

.footer-col-title {
  margin-bottom: 16px;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--gold);
  border-bottom: 1px solid var(--line);
}

.footer-list {
  display: grid;
  gap: 10px;
}

.footer-list li {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.footer-list a {
  display: inline-block;
  color: var(--muted);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.footer-list a:hover {
  color: var(--gold-soft);
  transform: translateX(4px);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  margin-top: clamp(36px, 5vw, 64px);
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.footer-copy,
.footer-legal {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--muted);
}

.footer-legal { color: var(--gold); }

.footer-note {
  max-width: 82ch;
  margin-top: 14px;
  font-size: 12px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 18. 桌面 / 平板断点 ---------- */
@media (min-width: 1080px) {
  .site-nav {
    position: static;
    display: flex;
    flex: 1 1 auto;
    justify-content: center;
    max-height: none;
    padding: 0;
    overflow: visible;
    background: none;
    border-bottom: 0;
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: none;
  }

  .nav-list {
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: clamp(6px, 1.7vw, 30px);
  }

  .nav-link {
    padding: 9px 2px;
    font-size: 15px;
    letter-spacing: .06em;
    border-bottom: 0;
  }

  .nav-link:hover { padding-left: 2px; }

  .nav-link::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    height: 2px;
    background: var(--gold);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform var(--dur) var(--ease);
  }

  .nav-link:hover::after { transform: scaleX(1); }

  .nav-link[aria-current="page"]::after {
    background: var(--cinnabar);
    transform: scaleX(1);
  }

  .nav-cta { display: none; }

  .nav-toggle { display: none; }

  .header-actions { display: flex; }
}

@media (min-width: 1024px) {
  .footer-top {
    grid-template-columns: minmax(240px, .9fr) 2.6fr;
    align-items: start;
  }

  .footer-cols { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 620px) and (max-width: 1023px) {
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 19. 减少动态效果 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }

  .record-card:hover,
  .to-top:hover { transform: none; }
}