/* =========================================================
   华体汇体育 · 共享样式表 /assets/site.css
   深墨绿近单色体系 + 荧光青唯一主强调 + 橙红仅用于比分
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 7.5rem;
}

body {
  margin: 0;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd, pre { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video, canvas { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
table { border-collapse: collapse; width: 100%; }
hr { border: 0; }

/* ---------- 2. 设计令牌 ---------- */
:root {
  /* 品牌色 */
  --night:      #04140F;
  --stand:      #0A2A20;
  --lane:       #10402F;
  --line:       #1C6B52;
  --neon:       #4DF0C8;
  --neon-soft:  #9BFFE8;
  --score:      #FF5A2B;
  --amber:      #FFC24D;
  --ink:        #E8F5EF;
  --mist:       #8FA8A0;

  /* 语义色（主题切换只改这一段） */
  --bg:         var(--night);
  --bg-raise:   var(--stand);
  --bg-card:    var(--lane);
  --bg-sunk:    #030F0B;
  --fg:         var(--ink);
  --fg-mute:    var(--mist);
  --fg-dim:     #6E8A82;
  --accent:     var(--neon);
  --accent-ink: var(--neon);
  --accent-on:  var(--night);
  --hot:        var(--score);
  --warn:       var(--amber);

  --border:      rgba(28, 107, 82, 0.66);
  --border-soft: rgba(28, 107, 82, 0.32);
  --border-hot:  rgba(77, 240, 200, 0.62);
  --glow-neon:   0 0 0 1px rgba(77, 240, 200, 0.30), 0 0 26px -8px rgba(77, 240, 200, 0.55);
  --header-bg:   #04140F;

  /* 字体 */
  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Heiti SC", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  /* 尺度 */
  --shell:  1360px;
  --gutter: clamp(18px, 4vw, 56px);
  --gap:    clamp(20px, 3vw, 44px);
  --radius:    18px;
  --radius-sm: 10px;
  --radius-lg: 28px;
}

[data-theme="day"] {
  --bg:         #E9F3EE;
  --bg-raise:   #DCEDE5;
  --bg-card:    #F5FBF7;
  --bg-sunk:    #CFE3DA;
  --fg:         #06231A;
  --fg-mute:    #3F6357;
  --fg-dim:     #637E76;
  --accent-ink: #0B7C60;
  --accent-on:  #04140F;
  --header-bg:  #EDF6F1;
  --border:      rgba(28, 107, 82, 0.46);
  --border-soft: rgba(28, 107, 82, 0.22);
  --border-hot:  rgba(11, 124, 96, 0.7);
  --glow-neon:   0 0 0 1px rgba(11, 124, 96, 0.28), 0 0 22px -10px rgba(11, 124, 96, 0.5);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background-color: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#main-content { scroll-margin-top: 8rem; }

::selection {
  background: var(--accent);
  color: var(--accent-on);
}

:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
  border-radius: 4px;
}

[data-theme="day"] :focus-visible { outline-color: #0B7C60; }

.display,
.section-head__title {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.015em;
  color: var(--fg);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--fg-dim);
  font-weight: 500;
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: -0.01em;
}

.lede {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.8;
  color: var(--fg-mute);
}

.prose { max-width: 68ch; }
.prose p { max-width: 42ch; margin-bottom: 1.15em; }
.prose p:last-child { margin-bottom: 0; }
.prose h2,
.prose h3 { margin: 2.2em 0 0.8em; }
.prose ul,
.prose ol { margin: 0 0 1.2em; padding-left: 1.15rem; list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin-bottom: 0.4em; }
.prose a { color: var(--accent-ink); text-underline-offset: 3px; }

/* ---------- 4. 布局骨架 ---------- */
.container {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  padding-bottom: 0.9rem;
  margin-bottom: clamp(20px, 3vw, 36px);
  border-bottom: 1px solid var(--border-soft);
}

.section-head__title {
  font-size: clamp(1.5rem, 3.2vw, 2.5rem);
}

.section-head__note {
  font-size: 0.8125rem;
  color: var(--fg-dim);
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.72em 1.35em;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease,
              border-color 0.18s ease, transform 0.18s ease;
}

.btn--sm { padding: 0.5em 1.05em; font-size: 0.8125rem; }

.btn--hot {
  background-color: var(--hot);
  border-color: var(--hot);
  color: #1A0800;
  box-shadow: 0 10px 28px -16px rgba(255, 90, 43, 0.95);
}
.btn--hot:hover { background-color: #FF7A4E; border-color: #FF7A4E; transform: translateY(-1px); }
.btn--hot:active { transform: translateY(0); }

.btn--ghost {
  background-color: transparent;
  border-color: var(--border);
  color: var(--fg);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent-ink); }

/* ---------- 6. 标签 / 胶囊 / 卡片 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.3em 0.85em;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--fg-mute);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  line-height: 1.5;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.tag:hover { border-color: var(--accent); color: var(--accent-ink); }
.tag--on,
.tag[aria-pressed="true"] {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--accent-on);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.32em 0.85em;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--fg-mute);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  line-height: 1.6;
  white-space: nowrap;
}
.chip--neon { border-color: rgba(77, 240, 200, 0.5); color: var(--accent-ink); }
.chip--amber { border-color: rgba(255, 194, 77, 0.5); color: var(--warn); }

.panel {
  position: relative;
  background-color: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: clamp(18px, 2.4vw, 30px);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}
.panel:hover { border-color: var(--border-hot); }

.rail {
  display: flex;
  gap: clamp(14px, 2vw, 24px);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  padding-bottom: 1rem;
  scrollbar-color: var(--line) transparent;
  scrollbar-width: thin;
}
.rail::-webkit-scrollbar { height: 4px; }
.rail::-webkit-scrollbar-track { background: var(--border-soft); border-radius: 2px; }
.rail::-webkit-scrollbar-thumb { background: var(--line); border-radius: 2px; }
.rail > * { flex: 0 0 auto; scroll-snap-align: start; }

/* ---------- 7. 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  isolation: isolate;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background-color: var(--bg-card);
  background-image:
    radial-gradient(120% 90% at 18% 0%, rgba(77, 240, 200, 0.18), transparent 62%),
    radial-gradient(90% 80% at 92% 108%, rgba(255, 90, 43, 0.16), transparent 60%),
    linear-gradient(158deg, var(--lane) 0%, var(--night) 100%);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.04);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(77, 240, 200, 0.055) 0 1px,
    transparent 1px 4px
  );
  mix-blend-mode: screen;
}

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

/* ---------- 8. 面包屑 ---------- */
.breadcrumb {
  font-size: 0.8125rem;
  color: var(--fg-dim);
}
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5em;
}
.breadcrumb li { display: inline-flex; align-items: center; }
.breadcrumb li + li::before {
  content: "/";
  margin-right: 0.55em;
  color: var(--border);
}
.breadcrumb a {
  color: var(--fg-mute);
  text-decoration: none;
  transition: color 0.18s ease;
}
.breadcrumb a:hover { color: var(--accent-ink); }
.breadcrumb [aria-current="page"] { color: var(--fg); }

/* ---------- 9. 跳至主内容 ---------- */
.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 200;
  transform: translateY(-160%);
  padding: 0.65rem 1.15rem;
  border-radius: 999px;
  background-color: var(--accent);
  color: var(--accent-on);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease;
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 10. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background-color: var(--header-bg);
  border-bottom: 1px solid var(--border-soft);
  transition: border-color 0.22s ease;
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background-image: linear-gradient(
    90deg,
    transparent 0%,
    rgba(77, 240, 200, 0.65) 24%,
    rgba(255, 90, 43, 0.5) 76%,
    transparent 100%
  );
  opacity: 0;
  transition: opacity 0.22s ease;
  pointer-events: none;
}
.site-header.is-condensed::after { opacity: 1; }
.site-header.is-condensed { border-bottom-color: transparent; }

.site-header__inner {
  padding-block: 14px 0;
  transition: padding 0.22s ease;
}

/* --- 刊头 --- */
.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(12px, 2vw, 32px);
  padding-block: 4px 10px;
  transition: padding 0.22s ease;
}

.masthead__meta {
  grid-column: 1;
  justify-self: start;
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: var(--fg-dim);
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.masthead__dot {
  width: 5px;
  height: 5px;
  flex: none;
  border-radius: 50%;
  background-color: var(--neon);
  box-shadow: 0 0 10px rgba(77, 240, 200, 0.9);
}

.masthead__brand {
  grid-column: 2;
  justify-self: center;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--fg);
  white-space: nowrap;
}

.masthead__mark {
  width: 10px;
  height: 26px;
  flex: none;
  border-radius: 2px;
  background-image: linear-gradient(180deg, var(--neon) 0%, var(--score) 100%);
  box-shadow: 0 0 18px rgba(77, 240, 200, 0.5);
  transition: height 0.22s ease, width 0.22s ease;
}

.masthead__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3vw, 2.45rem);
  line-height: 1;
  letter-spacing: 0.04em;
  transition: font-size 0.2s ease;
}

.masthead__tools {
  grid-column: 3;
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

/* --- 图标按钮 --- */
.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 50%;
  background-color: transparent;
  color: var(--fg-mute);
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease,
              background-color 0.18s ease, transform 0.18s ease;
}
.icon-btn:hover {
  color: var(--accent-ink);
  border-color: var(--accent);
  background-color: rgba(77, 240, 200, 0.08);
}
.icon-btn[aria-pressed="true"] {
  color: var(--amber);
  border-color: rgba(255, 194, 77, 0.6);
}

/* --- 移动导航按钮 --- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.85rem 0.45rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background-color: transparent;
  color: var(--fg);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.nav-toggle:hover { border-color: var(--accent); color: var(--accent-ink); }

.nav-toggle__bars {
  display: grid;
  gap: 4px;
  width: 18px;
}
.nav-toggle__bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background-color: currentColor;
  transition: transform 0.22s ease, opacity 0.18s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-toggle__label { white-space: nowrap; }

/* --- 导航 --- */
.nav-bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-block: 10px 14px;
  border-top: 1px solid var(--border-soft);
  transition: padding 0.22s ease, border-color 0.22s ease;
}

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

.nav-list__item { display: flex; }
.nav-list__item + .nav-list__item { border-left: 1px solid var(--border-soft); }

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.5rem clamp(0.7rem, 1.6vw, 1.3rem);
  color: var(--fg-mute);
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: color 0.18s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  right: 50%;
  bottom: 0.15rem;
  height: 1px;
  background-color: var(--accent);
  transition: left 0.2s ease, right 0.2s ease;
}
.nav-link:hover { color: var(--fg); }
.nav-link:hover::after,
.nav-link[aria-current="page"]::after {
  left: clamp(0.7rem, 1.6vw, 1.3rem);
  right: clamp(0.7rem, 1.6vw, 1.3rem);
}
.nav-link[aria-current="page"] { color: var(--accent-ink); }

.nav-bar__aside {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-bar__quick {
  display: none;
  align-items: center;
  padding: 0.35rem 0.75rem;
  border: 1px dashed var(--border);
  border-radius: 999px;
  color: var(--fg-dim);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.nav-bar__quick:hover { color: var(--accent-ink); border-color: var(--accent); }
.site-header.is-condensed .nav-bar__quick { display: inline-flex; }

/* --- 遮罩 --- */
.site-header__scrim { display: none; }

/* ---------- 11. 头部压缩态（桌面） ---------- */
.site-header.is-condensed .site-header__inner { padding-block: 9px 0; }
.site-header.is-condensed .masthead { padding-block: 0; }
.site-header.is-condensed .masthead__name { font-size: 1.3rem; }
.site-header.is-condensed .masthead__mark { width: 7px; height: 18px; }
.site-header.is-condensed .masthead__meta { opacity: 0; visibility: hidden; }
.site-header.is-condensed .nav-bar { padding-block: 7px 10px; border-top-color: transparent; }

@media (min-width: 1000px) {
  .site-header.is-condensed .site-header__inner {
    display: flex;
    align-items: center;
    gap: clamp(18px, 2.6vw, 40px);
    padding-block: 9px;
  }
  .site-header.is-condensed .masthead {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 0.6rem;
    padding: 0;
  }
  .site-header.is-condensed .masthead__brand { grid-column: auto; justify-self: auto; }
  .site-header.is-condensed .masthead__meta { display: none; }
  .site-header.is-condensed .masthead__tools { grid-column: auto; justify-self: auto; }
  .site-header.is-condensed .nav-bar {
    flex: 1 1 auto;
    min-width: 0;
    padding: 0;
    border-top: 0;
  }
  .site-header.is-condensed .nav-list { justify-content: center; }
}

/* ---------- 12. 头部移动端 ---------- */
@media (max-width: 899px) {
  .nav-toggle { display: inline-flex; }

  .masthead {
    grid-template-columns: auto 1fr auto;
    gap: 10px;
  }
  .masthead__meta { display: none; }
  .masthead__brand { grid-column: 1; justify-self: start; }
  .masthead__tools { grid-column: 3; justify-self: end; }

  .site-header__scrim {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 85;
    border: 0;
    background-color: rgba(2, 10, 7, 0.72);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.26s ease, visibility 0.26s ease;
  }
  .site-header__scrim[data-open] { opacity: 1; visibility: visible; }

  .nav-bar {
    position: fixed;
    inset: 0 0 0 auto;
    z-index: 90;
    width: min(340px, 88vw);
    max-width: 100%;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: 5.5rem 1.5rem 2.5rem;
    overflow-y: auto;
    background-color: var(--bg-raise);
    border-top: 0;
    border-left: 1px solid var(--border);
    transform: translateX(103%);
    visibility: hidden;
    transition: transform 0.28s cubic-bezier(0.32, 0.9, 0.3, 1), visibility 0.28s ease;
  }
  .nav-bar[data-open] { transform: translateX(0); visibility: visible; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    flex-wrap: nowrap;
    justify-content: flex-start;
  }
  .nav-list__item + .nav-list__item {
    border-left: 0;
    border-top: 1px solid var(--border-soft);
  }
  .nav-link {
    justify-content: space-between;
    width: 100%;
    padding: 0.95rem 0.25rem;
    font-size: 1.0625rem;
    letter-spacing: 0.18em;
    color: var(--fg);
  }
  .nav-link::after { display: none; }
  .nav-link[aria-current="page"] { color: var(--accent-ink); }
  .nav-link[aria-current="page"]::before {
    content: "";
    width: 6px;
    height: 6px;
    margin-left: auto;
    border-radius: 50%;
    background-color: var(--accent);
    box-shadow: 0 0 10px rgba(77, 240, 200, 0.85);
  }

  .nav-bar__aside {
    position: static;
    transform: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    margin-top: 1.75rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-soft);
  }
  .nav-bar__aside .btn { width: 100%; }
  .nav-bar__quick {
    display: inline-flex;
    justify-content: center;
  }
}

/* ---------- 13. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 9vw, 140px);
  background-image: linear-gradient(180deg, var(--bg) 0%, var(--bg-raise) 38%, var(--bg-raise) 100%);
  border-top: 1px solid var(--border);
  color: var(--fg-mute);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background-image: linear-gradient(
    90deg,
    transparent 0%,
    rgba(77, 240, 200, 0.6) 22%,
    rgba(255, 90, 43, 0.45) 78%,
    transparent 100%
  );
  pointer-events: none;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.9fr);
  gap: clamp(32px, 5vw, 80px);
  padding-block: clamp(44px, 6vw, 88px) clamp(32px, 4vw, 56px);
}

.footer-lead {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--fg);
  text-decoration: none;
  transition: color 0.18s ease;
}
.footer-brand:hover { color: var(--accent-ink); }

.footer-lead__line {
  max-width: 30ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--fg-mute);
}

.footer-lead__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 3vw, 48px);
}

.footer-col { min-width: 0; }

.footer-col__title {
  margin-bottom: 1.1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border-soft);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--fg-dim);
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-col__list a {
  display: inline-block;
  font-size: 0.9375rem;
  color: var(--fg-mute);
  text-decoration: none;
  transition: color 0.18s ease, transform 0.18s ease;
}
.footer-col__list a:hover { color: var(--accent-ink); transform: translateX(3px); }

.site-footer__base {
  border-top: 1px solid var(--border-soft);
}

.site-footer__base-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.25rem 2.5rem;
  padding-block: 1.5rem clamp(36px, 5vw, 64px);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem 1.5rem;
}

.footer-legal__line {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--fg-dim);
}

.footer-legal__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

.footer-legal__links a {
  font-size: 0.8125rem;
  color: var(--fg-mute);
  text-decoration: none;
  transition: color 0.18s ease;
}
.footer-legal__links a:hover { color: var(--accent-ink); }

.footer-contact {
  display: grid;
  gap: 0.3rem;
  text-align: right;
}

.footer-contact__line {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  color: var(--fg-mute);
}

.footer-note {
  max-width: 46ch;
  margin-top: 0.3rem;
  font-size: 0.75rem;
  line-height: 1.7;
  color: var(--fg-dim);
}

@media (max-width: 860px) {
  .site-footer__inner { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 760px) {
  .footer-contact { text-align: left; }
  .site-footer__base-inner { flex-direction: column; align-items: flex-start; }
}

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

/* ---------- 14. 标签页基础组件 ---------- */
.tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: 0.85rem;
  margin-bottom: clamp(20px, 3vw, 32px);
  border-bottom: 1px solid var(--border-soft);
}

.tab {
  appearance: none;
  padding: 0.42rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background-color: transparent;
  color: var(--fg-mute);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.tab:hover { border-color: var(--accent); color: var(--accent-ink); }
.tab[aria-selected="true"] {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--accent-on);
}

[data-tab-panel][hidden] { display: none; }

/* ---------- 15. 显现动效 ---------- */
[data-reveal] {
  transition: opacity 0.55s ease, transform 0.55s ease;
}
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
}
html.js [data-reveal][data-revealed] {
  opacity: 1;
  transform: none;
}

/* ---------- 16. 滚动锁定与减弱动效 ---------- */
body.nav-open { overflow: hidden; }

@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;
  }
  html.js [data-reveal] { opacity: 1; transform: none; }
  .nav-bar { transition: none; }
}