/* ============================================================
   /assets/site.css — 冠军白菜论坛 共享外壳
   悬浮胶囊导航 · 深墨蓝看台页脚 · 冠军金 / 白菜青绿识别
   ============================================================ */

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

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

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

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

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

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

a {
  color: inherit;
}

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

/* ---------- 2. 变量 ---------- */
:root {
  /* 色板 */
  --ink: #14213D;
  --ink-2: #223A63;
  --gold: #F2B233;
  --gold-soft: #FFE8B0;
  --leaf: #3E9B7A;
  --leaf-soft: #DDF1E7;
  --orange: #F26B38;
  --orange-soft: #FFD9C9;
  --paper: #FBFAF6;
  --graphite: #2B2F36;
  --mist: #6B7280;

  --line: rgba(20, 33, 61, 0.12);
  --line-strong: rgba(20, 33, 61, 0.2);
  --line-light: rgba(251, 250, 246, 0.16);

  /* 字体 */
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system,
    "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "SFMono-Regular", ui-monospace,
    Menlo, Consolas, "Courier New", monospace;

  /* 结构 */
  --maxw: 1180px;
  --maxw-wide: 1320px;
  --radius-s: 10px;
  --radius-m: 16px;
  --radius-l: 22px;
  --pill: 999px;

  --gap: clamp(14px, 1.8vw, 24px);
  --shadow-soft: 0 1px 0 rgba(20, 33, 61, 0.04), 0 18px 36px -30px rgba(20, 33, 61, 0.55);
  --shadow-lift: 0 1px 0 rgba(20, 33, 61, 0.05), 0 26px 44px -28px rgba(20, 33, 61, 0.5);
  --ease: 200ms cubic-bezier(0.32, 0.72, 0.32, 1);
}

/* ---------- 3. 中文排版与基础 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: clamp(15px, 1.05vw, 17px);
  line-height: 1.75;
  color: var(--graphite);
  background-color: var(--paper);
  background-image:
    radial-gradient(58vw 38vw at 88% -8%, rgba(242, 178, 51, 0.12), transparent 68%),
    radial-gradient(48vw 34vw at 4% 2%, rgba(62, 155, 122, 0.1), transparent 70%);
  background-repeat: no-repeat;
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-wrap: balance;
}

h1 { font-size: clamp(2rem, 5vw, 4.5rem); line-height: 1.05; }
h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.12rem, 1.7vw, 1.45rem); line-height: 1.28; }
h4 { font-size: clamp(1rem, 1.3vw, 1.15rem); line-height: 1.35; }

p { text-wrap: pretty; }

strong { font-weight: 800; color: var(--ink); }

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

/* 焦点反馈：金外圈 + 青绿内晕 */
:where(a, button, summary, [tabindex]):focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
  box-shadow: 0 0 0 6px rgba(62, 155, 122, 0.38);
}

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

/* ---------- 4. 工具类 ---------- */
.mono {
  font-family: var(--font-mono);
  font-size: 0.86em;
  letter-spacing: 0.02em;
}

.tilt {
  display: inline-block;
  transform: rotate(-2deg);
}

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

.lead {
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  line-height: 1.7;
  color: var(--ink-2);
  max-width: 46ch;
}

.link,
.prose a {
  color: #2C7D60;
  text-decoration: none;
  border-bottom: 1px solid rgba(62, 155, 122, 0.45);
  transition: color var(--ease), border-color var(--ease);
}

.link:hover,
.prose a:hover {
  color: var(--leaf);
  border-bottom-color: var(--gold);
}

.divider {
  height: 1px;
  border: 0;
  background: var(--line);
  margin: clamp(20px, 3vw, 36px) 0;
}

.aside-note {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--mist);
  border-left: 2px solid var(--leaf);
  padding-left: 12px;
}

/* ---------- 5. 布局容器与网格 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 40px);
}

.container--wide {
  max-width: var(--maxw-wide);
}

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

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 24px;
  margin-bottom: clamp(18px, 2.4vw, 30px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  flex: none;
  background: linear-gradient(90deg, var(--gold), var(--leaf));
}

.grid {
  display: grid;
  gap: var(--gap);
}

.grid--2,
.grid--3 {
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* Bento：12 列模块矩阵 */
.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}

.bento > * { grid-column: span 12; }

@media (min-width: 720px) {
  .bento > * { grid-column: span 6; }
  .bento > .span-12 { grid-column: span 12; }
}

@media (min-width: 1024px) {
  .bento > .span-4 { grid-column: span 4; }
  .bento > .span-6 { grid-column: span 6; }
  .bento > .span-8 { grid-column: span 8; }
  .bento > .span-12 { grid-column: span 12; }
}

/* ---------- 6. 通用组件 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55em;
  padding: 0.72em 1.3em;
  border: 1px solid transparent;
  border-radius: var(--pill);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--ease), background-color var(--ease),
    border-color var(--ease), color var(--ease), box-shadow var(--ease);
}

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

.btn--gold {
  background: linear-gradient(150deg, var(--gold-soft), var(--gold));
  color: var(--ink);
  border-color: rgba(20, 33, 61, 0.18);
  box-shadow: 0 10px 22px -16px rgba(242, 178, 51, 0.95);
}

.btn--orange {
  background: linear-gradient(150deg, #FFB694, var(--orange));
  color: var(--ink);
  border-color: rgba(20, 33, 61, 0.16);
  box-shadow: 0 10px 22px -16px rgba(242, 107, 56, 0.9);
}

.btn--leaf {
  background: var(--leaf);
  color: #FFFFFF;
  border-color: rgba(20, 33, 61, 0.12);
}

.btn--ink {
  background: linear-gradient(150deg, var(--ink), var(--ink-2));
  color: var(--paper);
  border-color: rgba(242, 178, 51, 0.35);
}

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

.btn--ghost:hover {
  border-color: var(--gold);
  background: rgba(255, 232, 176, 0.4);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--pill);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: var(--leaf-soft);
  color: #1E5A45;
  border: 1px solid rgba(62, 155, 122, 0.3);
}

.tag--gold {
  background: var(--gold-soft);
  color: #6B4A06;
  border-color: rgba(242, 178, 51, 0.5);
}

.tag--orange {
  background: var(--orange-soft);
  color: #8A3212;
  border-color: rgba(242, 107, 56, 0.42);
}

.tag--ink {
  background: rgba(20, 33, 61, 0.08);
  color: var(--ink);
  border-color: rgba(20, 33, 61, 0.16);
}

/* 卡片 */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(16px, 2.2vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: #FFFFFF;
  box-shadow: var(--shadow-soft);
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.card:hover,
.card:focus-within {
  transform: translateY(-2px);
  border-color: rgba(242, 178, 51, 0.72);
  box-shadow: var(--shadow-lift);
}

.card--gold {
  background: linear-gradient(160deg, #FFFFFF 0%, var(--gold-soft) 100%);
  border-color: rgba(242, 178, 51, 0.55);
}

.card--leaf {
  background: linear-gradient(160deg, #FFFFFF 0%, var(--leaf-soft) 100%);
  border-color: rgba(62, 155, 122, 0.35);
}

.card--ink {
  background: linear-gradient(150deg, var(--ink) 0%, var(--ink-2) 100%);
  color: rgba(251, 250, 246, 0.86);
  border-color: rgba(242, 178, 51, 0.38);
}

.card--ink h2,
.card--ink h3,
.card--ink h4 { color: var(--paper); }

/* 面包屑 */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(16px, 2vw, 26px);
  font-size: 0.82rem;
  color: var(--mist);
}

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

.crumbs li + li::before {
  content: "/";
  color: rgba(20, 33, 61, 0.28);
}

.crumbs a {
  color: var(--ink-2);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 58, 99, 0.25);
  transition: color var(--ease), border-color var(--ease);
}

.crumbs a:hover {
  color: var(--leaf);
  border-bottom-color: var(--leaf);
}

.crumbs [aria-current="page"] {
  color: var(--graphite);
  font-weight: 700;
}

/* 长文 */
.prose {
  max-width: 68ch;
  color: var(--graphite);
}

.prose > p { margin-block: 1.05em; }

.prose > :first-child { margin-top: 0; }

.prose h2 {
  margin-top: 2em;
  margin-bottom: 0.6em;
}

.prose h3 {
  margin-top: 1.6em;
  margin-bottom: 0.5em;
}

.prose ul,
.prose ol {
  margin-block: 1em;
  padding-left: 1.3em;
  list-style: disc;
}

.prose ol { list-style: decimal; }

.prose li { margin-block: 0.35em; }

.prose li::marker { color: var(--leaf); }

.prose blockquote {
  margin-block: 1.4em;
  padding: 0.6em 0 0.6em 1.1em;
  border-left: 3px solid var(--gold);
  color: var(--ink-2);
}

/* 图片 / 图形容器基础规则 */
.media-frame {
  position: relative;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: linear-gradient(140deg, var(--leaf-soft) 0%, #FFFFFF 52%, var(--gold-soft) 100%);
  aspect-ratio: 16 / 10;
}

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

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 4 / 5; }

.media-frame__caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 0.6em 0.85em;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--ink);
  background: linear-gradient(180deg, rgba(251, 250, 246, 0) 0%, rgba(251, 250, 246, 0.94) 70%);
}

.media-frame__badge {
  position: absolute;
  top: 10px;
  left: 10px;
}

.thumb {
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  background: linear-gradient(135deg, var(--leaf-soft) 0%, #FFFFFF 50%, var(--gold-soft) 100%);
  aspect-ratio: 16 / 10;
  transition: filter var(--ease);
}

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

.card:hover .thumb,
.card:focus-within .thumb {
  filter: brightness(1.04) saturate(1.06);
}

/* ---------- 7. 跳过链接 ---------- */
.skip-link {
  position: absolute;
  top: 0;
  left: 50%;
  z-index: 200;
  padding: 0.7em 1.2em;
  border-radius: 0 0 14px 14px;
  background: var(--ink);
  color: var(--paper);
  font-weight: 700;
  text-decoration: none;
  transform: translate(-50%, -160%);
  transition: transform var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translate(-50%, 0);
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

/* ---------- 8. 头部：悬浮胶囊导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  padding: clamp(8px, 1.2vw, 16px) clamp(10px, 2vw, 24px) 0;
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0 0 -16px 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(251, 250, 246, 0.96) 0%,
    rgba(251, 250, 246, 0.82) 58%,
    rgba(251, 250, 246, 0) 100%
  );
}

/* 赛道滚动进度 */
.scroll-meter {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 120;
  pointer-events: none;
  background: rgba(20, 33, 61, 0.07);
}

.scroll-meter__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--leaf) 0%, var(--gold) 55%, var(--orange) 100%);
}

.header-shell {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 26px);
  max-width: var(--maxw-wide);
  margin-inline: auto;
  padding: 9px 12px 9px 18px;
  border: 1px solid rgba(242, 178, 51, 0.28);
  border-radius: var(--pill);
  background: linear-gradient(118deg, #14213D 0%, #1B2C4F 48%, #223A63 100%);
  box-shadow: 0 16px 34px -22px rgba(20, 33, 61, 0.85),
    inset 0 1px 0 rgba(255, 255, 255, 0.07);
  color: var(--paper);
}

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

.brand__mark {
  position: relative;
  width: 32px;
  height: 32px;
  flex: none;
  border-radius: 10px;
  background: radial-gradient(circle at 30% 24%, #FFF6DC 0%, var(--gold) 55%, #D89A1E 100%);
  box-shadow: inset 0 0 0 1px rgba(20, 33, 61, 0.28);
}

.brand__mark::before {
  content: "";
  position: absolute;
  inset: 7px;
  border: 2px solid rgba(20, 33, 61, 0.55);
  border-bottom-color: transparent;
  border-radius: 50%;
  transform: rotate(-42deg);
}

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

.brand__name {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand__sub {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: rgba(251, 250, 246, 0.6);
}

.brand--footer .brand__name { font-size: 1.05rem; }
.brand--footer .brand__sub { color: rgba(251, 250, 246, 0.55); }

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--pill);
  background: rgba(255, 255, 255, 0.08);
  color: var(--paper);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color var(--ease), border-color var(--ease);
}

.nav-toggle:hover { background: rgba(255, 255, 255, 0.17); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: background-color var(--ease);
}

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

.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
  transform: translateY(5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  transform: translateY(-5px) rotate(-45deg);
}

/* 导航 */
.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.nav-link {
  display: inline-block;
  padding: 8px 13px;
  border-radius: var(--pill);
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  text-decoration: none;
  color: rgba(251, 250, 246, 0.78);
  transition: color var(--ease), background-color var(--ease), box-shadow var(--ease);
}

.nav-link:hover {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.1);
}

.nav-link[aria-current="page"] {
  color: var(--gold-soft);
  background: linear-gradient(160deg, rgba(242, 178, 51, 0.26), rgba(242, 178, 51, 0.1));
  box-shadow: inset 0 0 0 1px rgba(242, 178, 51, 0.55);
}

/* 公告胶囊 */
.nav-announce {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border: 1px solid rgba(20, 33, 61, 0.16);
  border-radius: var(--pill);
  background: linear-gradient(150deg, var(--gold-soft) 0%, var(--gold) 100%);
  color: var(--ink);
  font-size: 0.86rem;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 8px 18px -12px rgba(242, 178, 51, 0.95);
  transition: transform var(--ease), box-shadow var(--ease);
}

.nav-announce:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 24px -14px rgba(242, 178, 51, 1);
}

.nav-announce__dot {
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(242, 107, 56, 0.24);
}

.nav-announce__meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #5A4412;
}

/* 头部提示条 */
.header-hint {
  max-width: var(--maxw-wide);
  margin: 8px auto 0;
  padding-inline: 22px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--mist);
  text-align: right;
}

/* 头部断点收敛 */
@media (max-width: 1240px) {
  .nav-announce__meta { display: none; }
}

@media (max-width: 1120px) {
  .brand__sub { display: none; }
  .nav-link { padding: 8px 10px; font-size: 0.86rem; }
}

@media (max-width: 1023px) {
  .site-header { padding: 6px 8px 0; }

  .header-shell {
    flex-wrap: wrap;
    gap: 8px;
    padding: 9px 10px;
    border-radius: var(--radius-l);
  }

  .brand { padding-left: 2px; }

  .nav-toggle {
    display: inline-flex;
    order: 1;
    margin-left: auto;
  }

  .nav-announce {
    order: 2;
    padding: 8px 12px;
    font-size: 0.8rem;
  }

  .site-nav {
    order: 3;
    flex: 1 1 100%;
    display: none;
    justify-content: flex-start;
    margin-top: 4px;
    padding-top: 8px;
    border-top: 1px dashed rgba(251, 250, 246, 0.16);
  }

  .site-nav[data-open="true"] { display: block; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-link {
    display: block;
    padding: 11px 14px;
    border-radius: 12px;
    font-size: 0.95rem;
  }

  .header-hint { display: none; }
}

/* ---------- 9. 页脚：深墨蓝看台 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 9vw, 120px);
  background-color: var(--ink);
  background-image:
    radial-gradient(52vw 30vw at 10% 0%, rgba(62, 155, 122, 0.24), transparent 68%),
    radial-gradient(46vw 26vw at 88% 6%, rgba(242, 178, 51, 0.16), transparent 70%),
    linear-gradient(160deg, #14213D 0%, #172747 56%, #101B33 100%);
  color: rgba(251, 250, 246, 0.82);
}

.site-footer::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--leaf) 0%, var(--gold) 45%, var(--orange) 100%);
}

.footer-shell {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(38px, 5vw, 66px) clamp(20px, 4vw, 40px) clamp(20px, 3vw, 32px);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.35fr;
  gap: clamp(24px, 4vw, 56px);
}

.footer-brand__line {
  margin-top: 16px;
  max-width: 30ch;
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(251, 250, 246, 0.78);
}

.footer-rhythm {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 18px;
  font-size: 0.82rem;
  color: rgba(251, 250, 246, 0.6);
}

.footer-rhythm .mono { color: var(--gold-soft); }

.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  color: rgba(251, 250, 246, 0.55);
}

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

.footer-links a {
  display: inline-block;
  padding: 6px 0;
  font-size: 0.94rem;
  text-decoration: none;
  color: rgba(251, 250, 246, 0.86);
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.footer-links a:hover {
  color: var(--gold-soft);
  border-bottom-color: rgba(242, 178, 51, 0.64);
}

.footer-meta-list {
  display: grid;
  gap: 14px;
}

.footer-meta-list__row {
  display: grid;
  gap: 4px;
}

.footer-meta-list dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: rgba(251, 250, 246, 0.48);
}

.footer-meta-list dd {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.6;
  color: rgba(251, 250, 246, 0.9);
  overflow-wrap: anywhere;
}

.footer-note {
  margin-top: 16px;
  padding-left: 12px;
  border-left: 2px solid rgba(242, 178, 51, 0.55);
  font-size: 0.8rem;
  line-height: 1.7;
  color: rgba(251, 250, 246, 0.6);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: 18px;
  border-top: 1px solid var(--line-light);
  font-size: 0.8rem;
  color: rgba(251, 250, 246, 0.6);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
}

.footer-legal a {
  text-decoration: none;
  color: rgba(251, 250, 246, 0.74);
  border-bottom: 1px solid rgba(251, 250, 246, 0.24);
  transition: color var(--ease), border-color var(--ease);
}

.footer-legal a:hover {
  color: var(--gold-soft);
  border-bottom-color: var(--gold);
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.02em;
}

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
  .footer-base { justify-content: flex-start; }
}

/* ---------- 10. 减少动态偏好 ---------- */
@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,
  .card:hover,
  .card:focus-within,
  .nav-announce:hover {
    transform: none;
  }

  .scroll-meter__bar {
    transition: none;
  }
}