/* ==========================================================================
   第一娱乐主站 · 共享样式表 /assets/site.css
   暗底数据大厅 × 侧边品牌轨道 × 刊物式信息层级
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background: #060E16;
}

body,
h1, h2, h3, h4, h5,
p, ul, ol, li, figure, blockquote,
dl, dt, 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%; }

[hidden] { display: none !important; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink: #060E16;
  --canvas: #0C1A26;
  --layer: #141C24;
  --cyan: #22E3D2;
  --cyan-soft: #7FF3EA;
  --magenta: #FF3D8A;
  --amber: #FFB454;
  --paper: #E9F0F6;
  --mute: #9DB2C4;
  --line: #27404F;

  --rail-w: clamp(248px, 22vw, 336px);
  --gutter: clamp(20px, 3.4vw, 54px);
  --maxw: 1160px;

  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-cond: "Oswald", "Barlow Condensed", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-sans: "Inter", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 480ms;
  --dur-fast: 200ms;
}

/* ---------- 3. Base & Chinese Typography ---------- */
body {
  padding-left: var(--rail-w);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.78;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

main {
  display: block;
  background: var(--canvas);
  min-height: 70vh;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 800;
  line-height: 1.26;
  letter-spacing: 0.02em;
}

h1 { font-size: clamp(2.1rem, 3.6vw, 3.4rem); }
h2 { font-size: clamp(1.55rem, 2.4vw, 2.15rem); }
h3 { font-size: clamp(1.15rem, 1.6vw, 1.45rem); }
h4 { font-size: 1.05rem; }

p { text-wrap: pretty; }

strong, b { font-weight: 600; }

::selection {
  background: rgba(34, 227, 210, 0.28);
  color: #FFFFFF;
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- 4. Utilities ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.mono,
.site-nav__num,
.rail-foot__stat b,
.copy-chip {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
}

.rail-label {
  font-family: var(--font-cond);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--mute);
  margin-bottom: 10px;
}

/* ---------- 5. Skip link ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 300;
  padding: 10px 18px;
  background: var(--cyan);
  color: #04211F;
  font-family: var(--font-cond);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  border-radius: 3px;
  transform: translateY(-180%);
  transition: transform var(--dur-fast) var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
  outline-offset: 4px;
}

/* ---------- 6. Header · Brand Rail ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 120;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: clamp(20px, 2.2vw, 32px) clamp(16px, 1.7vw, 26px) 22px;
  background: linear-gradient(166deg, #060E16 0%, #08141F 54%, #0A1C29 100%);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg,
    var(--cyan) 0%,
    rgba(34, 227, 210, 0) 46%,
    rgba(255, 61, 138, 0.6) 100%);
  pointer-events: none;
}

/* 品牌署名 */
.rail-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark__glyph {
  flex: none;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 900;
  line-height: 1;
  color: #04211F;
  background: linear-gradient(140deg, var(--cyan-soft), var(--cyan));
  border-radius: 3px;
  box-shadow:
    0 0 0 1px rgba(34, 227, 210, 0.35),
    0 10px 24px -12px rgba(34, 227, 210, 0.85);
}

.brand-mark__body { min-width: 0; }

.brand-mark__name {
  display: block;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.05em;
  line-height: 1.3;
  color: var(--paper);
  white-space: nowrap;
}

.brand-mark__tag {
  display: block;
  font-family: var(--font-cond);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mute);
  white-space: nowrap;
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  flex: none;
  padding: 8px 12px;
  font-family: var(--font-cond);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--mute);
  background: rgba(20, 28, 36, 0.72);
  border: 1px solid var(--line);
  border-radius: 3px;
  transition: color var(--dur-fast), border-color var(--dur-fast), background var(--dur-fast);
}

.nav-toggle:hover { color: var(--paper); border-color: rgba(34, 227, 210, 0.45); }

.nav-toggle__bars {
  position: relative;
  width: 16px;
  height: 11px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  transition: transform 240ms var(--ease);
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }

.site-header[data-open] .nav-toggle {
  color: var(--cyan);
  border-color: rgba(34, 227, 210, 0.55);
  background: rgba(34, 227, 210, 0.08);
}

.site-header[data-open] .nav-toggle__bars::before { transform: translateY(4.5px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars::after { transform: translateY(-4.5px) rotate(-45deg); }

/* 主导航 */
.site-nav { display: block; }

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-nav__list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid transparent;
  border-radius: 0 3px 3px 0;
  color: var(--mute);
  font-size: 15px;
  transition: color var(--dur-fast), background var(--dur-fast), border-color var(--dur-fast);
}

.site-nav__list a:hover {
  color: var(--paper);
  background: rgba(34, 227, 210, 0.07);
  border-left-color: rgba(34, 227, 210, 0.4);
}

.site-nav__list a[aria-current="page"] {
  color: var(--cyan);
  background: linear-gradient(90deg, rgba(34, 227, 210, 0.14), rgba(34, 227, 210, 0) 88%);
  border-left-color: var(--cyan);
}

.site-nav__num {
  font-size: 11px;
  font-weight: 500;
  color: rgba(157, 178, 196, 0.5);
  transition: color var(--dur-fast);
}

.site-nav__list a:hover .site-nav__num { color: rgba(157, 178, 196, 0.85); }
.site-nav__list a[aria-current="page"] .site-nav__num { color: rgba(34, 227, 210, 0.8); }
.site-nav__list a[aria-current="page"] .site-nav__label { font-weight: 600; }

/* 章节索引 */
.rail-index {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.rail-index__list {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.rail-index__list a {
  display: block;
  padding: 6px 8px 6px 11px;
  font-size: 13.5px;
  line-height: 1.55;
  color: rgba(157, 178, 196, 0.82);
  border-left: 1px solid var(--line);
  transition: color var(--dur-fast), border-color var(--dur-fast), padding-left var(--dur-fast);
}

.rail-index__list a:hover {
  color: var(--cyan-soft);
  border-left-color: rgba(127, 243, 234, 0.6);
}

.rail-index__list a.is-active {
  color: var(--cyan);
  border-left-color: var(--cyan);
  padding-left: 15px;
}

/* 轨道底部摘要 */
.rail-foot {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.rail-foot__stat {
  font-size: 12.5px;
  color: var(--mute);
  letter-spacing: 0.02em;
}

.rail-foot__stat b {
  font-weight: 500;
  color: var(--amber);
  font-size: 14px;
}

.rail-foot__note {
  margin-top: 4px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: rgba(157, 178, 196, 0.66);
}

/* ---------- 7. Footer ---------- */
.site-footer {
  position: relative;
  background: var(--ink);
  padding: clamp(38px, 4.6vw, 62px) 0 26px;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg,
    var(--cyan) 0%,
    rgba(34, 227, 210, 0.22) 34%,
    rgba(255, 61, 138, 0.55) 72%,
    var(--amber) 100%);
}

.footer-inner {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(220px, 1.55fr) repeat(3, minmax(140px, 1fr));
  gap: clamp(24px, 3.4vw, 52px);
  padding-bottom: clamp(26px, 3.6vw, 42px);
}

.footer-brand__mark {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--paper);
}

.footer-brand__sub {
  margin-top: 5px;
  font-family: var(--font-cond);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.footer-brand__note {
  margin-top: 14px;
  max-width: 34ch;
  font-size: 13px;
  line-height: 1.72;
  color: rgba(157, 178, 196, 0.82);
}

.footer-col__title {
  font-family: var(--font-cond);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--mute);
  margin-bottom: 14px;
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-col__list a {
  display: inline-block;
  font-size: 14px;
  color: rgba(233, 240, 246, 0.82);
  border-bottom: 1px solid transparent;
  transition: color var(--dur-fast), border-color var(--dur-fast);
}

.footer-col__list a:hover {
  color: var(--cyan);
  border-bottom-color: rgba(34, 227, 210, 0.5);
}

.footer-contact { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }

.copy-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 7px 12px;
  font-size: 12.5px;
  color: var(--paper);
  background: rgba(20, 28, 36, 0.9);
  border: 1px solid var(--line);
  border-radius: 3px;
  text-align: left;
  transition: border-color var(--dur-fast), color var(--dur-fast), background var(--dur-fast);
}

.copy-chip:hover {
  border-color: rgba(34, 227, 210, 0.6);
  color: var(--cyan);
}

.copy-chip__key {
  flex: none;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mute);
}

.copy-chip__val {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.copy-chip__state {
  display: none;
  flex: none;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.copy-chip.is-copied {
  border-color: var(--cyan);
  background: rgba(34, 227, 210, 0.1);
}

.copy-chip.is-copied .copy-chip__state { display: inline; }

.footer-contact__addr,
.footer-contact__sla {
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(157, 178, 196, 0.82);
}

.footer-contact__sla { color: var(--amber); }

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: rgba(157, 178, 196, 0.72);
}

/* ---------- 8. Content Blocks ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--mute);
}

.breadcrumb li { display: inline-flex; align-items: center; gap: 8px; }

.breadcrumb li + li::before {
  content: "/";
  color: var(--line);
  margin-right: 0;
}

.breadcrumb a { color: rgba(157, 178, 196, 0.9); }
.breadcrumb a:hover { color: var(--cyan); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px 26px;
  padding-bottom: 14px;
  margin-bottom: clamp(20px, 2.6vw, 30px);
  border-bottom: 1px solid var(--line);
}

.section-head__main { min-width: 0; }

.section-head__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.24em;
  color: var(--cyan);
  margin-bottom: 8px;
}

.section-head h2 { color: var(--paper); }

.section-head__meta {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

/* 对角错位首屏基底 */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(46px, 6.4vw, 96px) 0 clamp(40px, 5vw, 72px);
}

.hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -8%;
  width: min(62%, 720px);
  aspect-ratio: 1 / 1;
  background: linear-gradient(150deg, rgba(34, 227, 210, 0.16), rgba(34, 227, 210, 0) 62%);
  clip-path: polygon(30% 0, 100% 0, 100% 70%, 68% 100%, 0 100%, 0 32%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -14%;
  width: min(46%, 520px);
  aspect-ratio: 1 / 1;
  background: linear-gradient(24deg, rgba(255, 61, 138, 0.13), rgba(255, 61, 138, 0) 66%);
  clip-path: polygon(0 22%, 62% 0, 100% 46%, 100% 100%, 18% 100%);
  pointer-events: none;
}

.hero > * { position: relative; z-index: 1; }

/* ---------- 9. Components ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  border-radius: 2px;
  border: 1px solid currentColor;
  white-space: nowrap;
}

.tag--cyan { color: var(--cyan); background: rgba(34, 227, 210, 0.1); }
.tag--magenta { color: var(--magenta); background: rgba(255, 61, 138, 0.1); }
.tag--amber { color: var(--amber); background: rgba(255, 180, 84, 0.1); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 20px;
  font-family: var(--font-cond);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  border-radius: 3px;
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease),
              background var(--dur-fast),
              color var(--dur-fast),
              border-color var(--dur-fast),
              box-shadow var(--dur-fast);
}

.btn--primary {
  background: var(--cyan);
  color: #04211F;
  box-shadow: 0 12px 28px -16px rgba(34, 227, 210, 0.95);
}

.btn--primary:hover {
  background: var(--cyan-soft);
  transform: translateY(-2px);
}

.btn--ghost {
  border-color: var(--line);
  color: var(--paper);
  background: rgba(20, 28, 36, 0.5);
}

.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

/* 数据条 */
.data-bar {
  position: relative;
  height: 8px;
  border-radius: 999px;
  background: rgba(39, 64, 79, 0.55);
  overflow: hidden;
}

.data-bar__fill {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan), var(--cyan-soft));
  transition: width var(--dur) var(--ease);
}

.data-bar--amber .data-bar__fill {
  background: linear-gradient(90deg, var(--amber), #FFD79A);
}

.data-bar--magenta .data-bar__fill {
  background: linear-gradient(90deg, var(--magenta), #FF9AC2);
}

/* 图片容器 */
.media-frame {
  position: relative;
  overflow: hidden;
  background:
    repeating-linear-gradient(135deg, rgba(39, 64, 79, 0.35) 0 1px, transparent 1px 12px),
    var(--layer);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.media-frame > img,
.media-frame > .media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--1x1 { aspect-ratio: 1 / 1; }

/* 筛选按钮 */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-btn {
  padding: 7px 15px;
  font-family: var(--font-cond);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--mute);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: color var(--dur-fast), border-color var(--dur-fast), background var(--dur-fast);
}

.filter-btn:hover {
  color: var(--paper);
  border-color: rgba(34, 227, 210, 0.45);
}

.filter-btn[aria-pressed="true"] {
  color: #04211F;
  background: var(--cyan);
  border-color: var(--cyan);
}

/* 展开收起 */
.disclosure {
  border-bottom: 1px solid var(--line);
}

.disclosure__btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 2px;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--paper);
  transition: color var(--dur-fast);
}

.disclosure__btn:hover { color: var(--cyan); }

.disclosure__icon {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  color: var(--cyan);
}

.disclosure__icon::before,
.disclosure__icon::after {
  content: "";
  position: absolute;
  background: currentColor;
}

.disclosure__icon::before { top: 6.25px; left: 0; width: 14px; height: 1.5px; }

.disclosure__icon::after {
  top: 0;
  left: 6.25px;
  width: 1.5px;
  height: 14px;
  transition: transform 260ms var(--ease);
}

.disclosure[data-open] .disclosure__icon::after { transform: scaleY(0); }
.disclosure[data-open] .disclosure__btn { color: var(--cyan); }

.disclosure__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 320ms var(--ease);
}

.disclosure__panel > div {
  overflow: hidden;
  min-height: 0;
}

.disclosure[data-open] .disclosure__panel { grid-template-rows: 1fr; }

.disclosure__body {
  padding: 0 2px 20px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(233, 240, 246, 0.84);
}

.disclosure__body > * + * { margin-top: 12px; }

/* 显现与扫描动画 */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

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

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

.scan-in { animation: scanIn 320ms var(--ease) both; }

/* ---------- 10. Tablet ---------- */
@media (max-width: 1000px) {
  body { padding-left: 0; }

  .site-header {
    position: sticky;
    top: 0;
    left: auto;
    right: auto;
    bottom: auto;
    width: 100%;
    height: auto;
    max-height: 100vh;
    overflow-y: auto;
    gap: 14px;
    padding: 12px 18px 14px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    background: linear-gradient(180deg, #060E16 0%, #08141F 100%);
  }

  .site-header::before {
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg,
      var(--cyan) 0%,
      rgba(34, 227, 210, 0) 58%,
      rgba(255, 61, 138, 0.6) 100%);
  }

  .rail-top { align-items: center; }

  .nav-toggle { display: inline-flex; }

  .site-nav,
  .rail-index { display: none; }

  .site-header[data-open] .site-nav,
  .site-header[data-open] .rail-index {
    display: block;
    padding-top: 12px;
    border-top: 1px solid var(--line);
  }

  .site-header[data-open] .site-nav__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4px;
  }

  .site-header[data-open] .rail-index__list {
    columns: 2;
    column-gap: 16px;
  }

  .site-header[data-open] .rail-index__list a {
    break-inside: avoid;
  }

  .site-header[data-open] .rail-index { border-top: 0; padding-top: 16px; }

  .rail-foot { display: none; }

  .hero::before { width: 78%; top: -14%; opacity: 0.75; }
  .hero::after { width: 62%; opacity: 0.7; }

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

/* ---------- 11. Phone ---------- */
@media (max-width: 760px) {
  body { font-size: 15.5px; }

  .brand-mark__glyph { width: 38px; height: 38px; font-size: 19px; }
  .brand-mark__name { font-size: 15.5px; }
  .brand-mark__tag { font-size: 10.5px; letter-spacing: 0.12em; }

  .media-frame--wide { aspect-ratio: 16 / 9; }

  .section-head { align-items: flex-start; flex-direction: column; }

  .footer-grid { grid-template-columns: 1fr; gap: 26px; }

  .footer-legal {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .site-header[data-open] .site-nav__list { grid-template-columns: 1fr; }
  .site-header[data-open] .rail-index__list { columns: 1; }
  .copy-chip { font-size: 12px; }
}

/* ---------- 12. Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal { opacity: 1; transform: none; }
  .data-bar__fill { transition: none; }
  .scan-in { animation: none; }
}

/* ---------- 13. Print ---------- */
@media print {
  .site-header,
  .skip-link,
  .filter-bar,
  .nav-toggle { display: none !important; }

  body { padding-left: 0; background: #FFFFFF; color: #101820; }
  main { background: #FFFFFF; }
  .site-footer { background: #FFFFFF; color: #101820; }
}