/* ============================================================
   乐虎国游戏 — 全站共享样式 / assets/site.css
   坐标网格 · 虎纹脉冲 · 展览标签
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --tiger: #FF6A1A;
  --tiger-deep: #C4470A;
  --amber: #FFC24B;
  --space: #0B1230;
  --space-2: #141B42;
  --nebula: #2B1B5E;
  --cyan: #39F2E0;
  --paper: #F7F4EE;
  --ink: #11142B;
  --ink-soft: #3C4160;
  --mist: #8C90A8;
  --signal: #38D27A;
  --warn: #FF5C7A;

  --line-dark: rgba(57, 242, 224, 0.22);
  --line-dark-soft: rgba(247, 244, 238, 0.14);
  --line-light: rgba(17, 20, 43, 0.16);
  --line-light-soft: rgba(17, 20, 43, 0.08);

  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-body: var(--font-display);
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --maxw: 1280px;
  --gutter: clamp(16px, 4vw, 40px);
  --cut: 22px;
  --cut-sm: 14px;

  --step-sm: clamp(13px, 1.05vw, 14px);
  --step-body: clamp(16px, 1.15vw, 17px);
  --step-h3: clamp(20px, 2vw, 25px);
  --step-h2: clamp(28px, 3.6vw, 46px);
  --step-h1: clamp(40px, 6vw, 78px);
  --step-hero: clamp(56px, 9vw, 152px);

  --pad-section: clamp(56px, 9vw, 132px);
  --gap: clamp(16px, 2vw, 24px);

  --ease: cubic-bezier(0.22, 0.72, 0.28, 1);
  --dur: 200ms;
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-body);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: inherit;
  text-wrap: balance;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

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

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

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

button { cursor: pointer; }

hr {
  border: 0;
  border-top: 1px solid var(--line-light);
  margin: 0;
}

::selection {
  background: var(--tiger);
  color: var(--space);
}

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

#main-content { scroll-margin-top: 104px; }

/* ---------- 3. 通用工具 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--pad-section); }
.section--tight { padding-block: clamp(32px, 5vw, 64px); }

.surface-dark {
  background-color: var(--space);
  color: var(--paper);
  background-image:
    linear-gradient(rgba(57, 242, 224, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 242, 224, 0.07) 1px, transparent 1px);
  background-size: 72px 72px;
}

.mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.rule {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--tiger), rgba(255, 194, 75, 0.5) 40%, transparent);
}

/* ---------- 4. 网格 ---------- */
.grid {
  display: grid;
  gap: var(--gap);
}

.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.grid--12 > * { min-width: 0; }

.col-2 { grid-column: span 2; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-12 { grid-column: span 12; }

.col-start-2 { grid-column-start: 2; }
.col-start-3 { grid-column-start: 3; }
.col-start-6 { grid-column-start: 6; }

@media (max-width: 900px) {
  .grid--12 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .col-2, .col-3, .col-4, .col-5, .col-6,
  .col-7, .col-8, .col-9, .col-10, .col-12 {
    grid-column: span 4;
  }
  .col-start-2, .col-start-3, .col-start-6 { grid-column-start: auto; }
}

/* ---------- 5. Skip link ---------- */
.skip-link {
  position: absolute;
  top: -80px;
  left: var(--gutter);
  z-index: 300;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 20px;
  background: var(--tiger);
  color: var(--space);
  font-weight: 700;
  font-size: 14px;
  border: 2px solid var(--space);
  transition: top var(--dur) var(--ease);
}

.skip-link:focus { top: 12px; }

/* ---------- 6. 页头 / 悬浮胶囊导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  padding: clamp(10px, 1.4vw, 18px) clamp(12px, 3vw, 32px) 0;
}

.scan-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--tiger), var(--amber) 45%, var(--cyan));
  z-index: 120;
  pointer-events: none;
}

.nav-shell {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.8vw, 26px);
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 7px 7px 7px 16px;
  border-radius: 999px;
  border: 1px solid rgba(57, 242, 224, 0.26);
  background: rgba(11, 18, 48, 0.84);
  color: var(--paper);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  backdrop-filter: blur(16px) saturate(150%);
  box-shadow: 0 20px 44px -30px rgba(11, 18, 48, 0.95);
  transition:
    background var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.site-header[data-scrolled="true"] .nav-shell {
  background: rgba(247, 244, 238, 0.9);
  border-color: rgba(17, 20, 43, 0.14);
  color: var(--ink);
  box-shadow: 0 18px 36px -28px rgba(11, 18, 48, 0.6);
}

/* 品牌锁定区 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  padding: 6px 6px 6px 2px;
  color: inherit;
  transition: opacity var(--dur) var(--ease);
}

.brand:hover { opacity: 0.86; }

.brand__mark {
  position: relative;
  display: block;
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  overflow: hidden;
  background: linear-gradient(140deg, var(--amber) 0%, var(--tiger) 58%, var(--tiger-deep) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 74%, 74% 100%, 0 100%);
}

.brand__mark::before,
.brand__mark::after {
  content: "";
  position: absolute;
  left: -18%;
  width: 136%;
  height: 4px;
  background: var(--space);
  transform: rotate(-26deg);
}

.brand__mark::before { top: 7px; }
.brand__mark::after { top: 18px; }

.brand__type {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 15px;
  letter-spacing: 0.06em;
}

.brand__latin {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.3em;
  color: var(--cyan);
  transition: color var(--dur) var(--ease);
}

.site-header[data-scrolled="true"] .brand__latin { color: var(--tiger-deep); }

/* 栏目导航 */
.site-nav {
  display: flex;
  align-items: center;
  margin-inline: auto;
  color: inherit;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__item { list-style: none; }

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: inherit;
  white-space: nowrap;
  transition:
    background var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.site-nav__coord {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  opacity: 0.85;
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  border-color: rgba(57, 242, 224, 0.55);
  color: var(--cyan);
}

.site-header[data-scrolled="true"] .site-nav__link:hover,
.site-header[data-scrolled="true"] .site-nav__link:focus-visible {
  border-color: rgba(196, 71, 10, 0.45);
  color: var(--tiger-deep);
}

.site-nav__link[aria-current="page"] {
  background: var(--tiger);
  border-color: transparent;
  color: var(--space);
  font-weight: 700;
}

.site-nav__link[aria-current="page"] .site-nav__coord {
  color: var(--space);
  opacity: 0.65;
}

/* 页头行动入口 */
.nav-cta { flex: 0 0 auto; }

/* 移动端开合按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  min-width: 44px;
  margin-left: auto;
  padding: 8px 15px;
  border: 1px solid rgba(57, 242, 224, 0.4);
  border-radius: 999px;
  background: transparent;
  color: inherit;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  transition:
    background var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

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

.site-header[data-scrolled="true"] .nav-toggle { border-color: rgba(17, 20, 43, 0.2); }

.nav-toggle[aria-expanded="true"] {
  background: var(--tiger);
  border-color: var(--tiger);
  color: var(--space);
}

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

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), top var(--dur) var(--ease);
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { top: 8px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 4px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 4px; transform: rotate(-45deg); }

@media (max-width: 1080px) {
  .nav-shell { padding-right: 7px; }

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

  .nav-cta { display: none; }

  .site-nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    display: none;
    margin: 0;
    padding: 14px;
    max-height: calc(100vh - 150px);
    overflow-y: auto;
    border-radius: 22px;
    border: 1px solid rgba(57, 242, 224, 0.28);
    background: rgba(11, 18, 48, 0.97);
    color: var(--paper);
    box-shadow: 0 34px 64px -34px rgba(0, 0, 0, 0.85);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
  }

  .site-nav[data-open="true"] { display: block; }
  .site-nav[data-open="false"] { display: none; }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .site-nav__link {
    width: 100%;
    justify-content: flex-start;
    padding: 13px 15px;
    font-size: 16px;
    border-color: rgba(247, 244, 238, 0.1);
  }
}

@media (max-width: 560px) {
  .nav-shell { padding-left: 12px; }
  .brand__latin { display: none; }
  .nav-toggle__text { display: none; }
  .nav-toggle { padding: 8px 12px; }
}

/* ---------- 7. 按钮 ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 12px 24px;
  border: 1px solid transparent;
  background: transparent;
  color: inherit;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-align: center;
  clip-path: polygon(var(--cut-sm) 0, 100% 0, 100% calc(100% - var(--cut-sm)), calc(100% - var(--cut-sm)) 100%, 0 100%, 0 var(--cut-sm));
  transition:
    background-color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 3px var(--cyan);
}

.btn--primary {
  background: var(--tiger);
  color: var(--space);
}

.btn--primary:hover { background: var(--amber); }

.btn--ghost {
  border-color: rgba(247, 244, 238, 0.42);
  color: var(--paper);
}

.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn--line {
  border-color: var(--line-light);
  color: var(--ink);
}

.btn--line:hover {
  border-color: var(--tiger);
  color: var(--tiger-deep);
}

.btn--sm {
  min-height: 38px;
  padding: 8px 18px;
  font-size: 13px;
  --cut-sm: 10px;
}

/* ---------- 8. 展签标签 / 坐标注释 ---------- */
.spec-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border: 1px solid rgba(255, 194, 75, 0.45);
  background: rgba(255, 194, 75, 0.07);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;
}

.spec-tag--light {
  border-color: rgba(196, 71, 10, 0.38);
  background: rgba(255, 106, 26, 0.07);
  color: var(--tiger-deep);
}

.spec-tag--cyan {
  border-color: rgba(57, 242, 224, 0.4);
  background: rgba(57, 242, 224, 0.07);
  color: var(--cyan);
}

.coord-note {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--mist);
  writing-mode: vertical-rl;
}

.surface-dark .coord-note { color: rgba(247, 244, 238, 0.5); }

/* ---------- 9. 区块标题 ---------- */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 22px;
  margin-bottom: clamp(24px, 3vw, 40px);
}

.section-head__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--tiger-deep);
}

.surface-dark .section-head__index { color: var(--amber); }

.section-head__title {
  font-size: var(--step-h2);
  letter-spacing: -0.02em;
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumbs { padding-block: 18px; }

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.breadcrumbs__link {
  color: inherit;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.breadcrumbs__link:hover,
.breadcrumbs__link:focus-visible {
  color: var(--tiger-deep);
  border-bottom-color: currentColor;
}

.breadcrumbs__sep { color: rgba(140, 144, 168, 0.6); }
.breadcrumbs__current { color: var(--ink); }

.surface-dark .breadcrumbs__current { color: var(--paper); }
.surface-dark .breadcrumbs__link:hover { color: var(--cyan); }

/* ---------- 11. 卡片 ---------- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.4vw, 30px);
  background-color: var(--paper);
  border: 1px solid var(--line-light);
  color: var(--ink);
  transition:
    border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 16px;
  height: 16px;
  border-top: 1px solid var(--tiger);
  border-left: 1px solid var(--tiger);
  pointer-events: none;
}

.card:hover,
.card:focus-within {
  border-color: var(--tiger);
  box-shadow: 0 0 0 3px rgba(57, 242, 224, 0.18), 0 26px 46px -38px rgba(11, 18, 48, 0.9);
}

.card--dark {
  background-color: var(--space-2);
  border-color: var(--line-dark);
  color: var(--paper);
}

.card--dark:hover,
.card--dark:focus-within {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(255, 106, 26, 0.2), 0 26px 46px -34px rgba(0, 0, 0, 0.85);
}

.card__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
  transition: transform var(--dur) var(--ease);
}

.card:hover .card__meta { transform: translateY(-3px); }

.card__title {
  font-size: var(--step-h3);
  line-height: 1.24;
}

/* ---------- 12. 可复用图片容器 ---------- */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background-color: var(--space);
  background-image:
    radial-gradient(120% 120% at 12% 0%, rgba(43, 27, 94, 0.95) 0%, rgba(11, 18, 48, 0.98) 58%, #060a1c 100%);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(57, 242, 224, 0.07) 0 1px,
    transparent 1px 5px
  );
  opacity: 0.6;
}

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

.media-frame--21x9 { 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; }
.media-frame--3x4 { aspect-ratio: 3 / 4; }
.media-frame--free { aspect-ratio: auto; min-height: 180px; }

.media-frame__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

/* ---------- 13. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 120px);
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(17, 20, 43, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 20, 43, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: center top;
  color: var(--ink);
  border-top: 1px solid var(--line-light);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent 0%, var(--tiger) 18%, var(--amber) 42%, var(--cyan) 72%, transparent 100%);
  opacity: 0.9;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(230px, 1.7fr) repeat(3, minmax(104px, 0.72fr)) minmax(220px, 1.35fr);
  gap: clamp(24px, 3.2vw, 52px);
  padding-block: clamp(48px, 6vw, 88px) clamp(40px, 5vw, 72px);
  align-items: start;
}

.footer-brand__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 2.8vw, 32px);
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.footer-brand__latin {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.32em;
  color: var(--tiger-deep);
}

.footer-note {
  margin: 16px 0 0;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.footer-brand__tag { margin-top: 18px; }

.footer-col__title {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-light);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.16em;
  color: var(--ink);
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-col__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  width: fit-content;
  min-height: 44px;
  font-size: 14.5px;
  color: var(--ink);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.footer-col__link::before {
  content: "";
  display: block;
  width: 6px;
  height: 1px;
  background: var(--mist);
  transition: width var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.footer-col__link:hover,
.footer-col__link:focus-visible {
  color: var(--tiger-deep);
  border-bottom-color: var(--tiger);
}

.footer-col__link:hover::before,
.footer-col__link:focus-visible::before {
  width: 15px;
  background: var(--tiger);
}

.footer-contact__line {
  display: flex;
  gap: 10px;
  align-items: baseline;
  margin: 0 0 10px;
  font-size: 14px;
  color: var(--ink);
  word-break: break-word;
}

.footer-contact__k {
  flex: 0 0 auto;
  min-width: 42px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.footer-contact__v { color: var(--ink-soft); }

.footer-contact__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-light);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--mist);
}

.footer-bar {
  background: var(--space);
  color: var(--paper);
  border-top: 1px solid rgba(57, 242, 224, 0.24);
}

.footer-bar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 28px;
  padding-block: 18px;
}

.footer-bar__legal {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: rgba(247, 244, 238, 0.8);
}

.footer-bar__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

@media (max-width: 1100px) {
  .footer-top {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .footer-brand { grid-column: 1 / -1; }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  .footer-top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand,
  .footer-contact { grid-column: 1 / -1; }
  .footer-bar__inner { justify-content: flex-start; }
}

/* ---------- 14. 滚动显现（配合 data-reveal） ---------- */
[data-reveal] {
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}

html[data-js="true"] [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
}

html[data-js="true"] [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 15. 降低动效偏好 ---------- */
@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;
    scroll-behavior: auto !important;
  }

  .btn:hover { transform: none; }
  .card:hover .card__meta { transform: none; }

  html[data-js="true"] [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- 16. 打印 ---------- */
@media print {
  .site-header,
  .scan-progress,
  .site-footer { display: none !important; }
  body { background: #fff; color: #000; }
}