/* ============================================================
   TVT体育主场 · 共享站点样式 /assets/site.css
   reset · 变量 · 中文排版 · 双层头部 · 页脚 · 通用组件
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 120px;
}

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

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

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

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

button { background: none; border: 0; cursor: pointer; }

table { border-collapse: collapse; }

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

[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #06231C;
  --ink-800: #0E1211;
  --ink-700: #123A33;
  --paper: #EDE7D9;
  --neon: #37E6C8;
  --signal: #FF6A2B;
  --lime: #C8FF3D;
  --gray: #8FA39C;
  --white: #F4FBF8;

  --line: rgba(143, 163, 156, .26);
  --line-2: rgba(143, 163, 156, .13);
  --line-ink: rgba(6, 35, 28, .16);

  --shell-w: 1280px;
  --shell-narrow: 744px;
  --gutter: clamp(16px, 3.4vw, 40px);

  --r-sm: 3px;
  --r-md: 6px;
  --dur: 160ms;
  --ease: cubic-bezier(.2, .7, .3, 1);

  --shadow-card: 0 22px 44px -34px rgba(0, 0, 0, .95), inset 0 1px 0 rgba(255, 255, 255, .03);
  --topbar-h: 38px;
  --mainbar-h: 66px;

  --font-head: "Arial Narrow", "Helvetica Neue Condensed", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-num: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

/* ---------- 3. 基础与中文排版 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: .01em;
  color: var(--white);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(120% 80% at 88% -12%, rgba(55, 230, 200, .10), transparent 62%),
    radial-gradient(90% 70% at -6% 104%, rgba(255, 106, 43, .07), transparent 60%),
    repeating-linear-gradient(90deg, rgba(143, 163, 156, .05) 0 1px, transparent 1px 96px),
    linear-gradient(180deg, #06231C 0%, #072019 58%, #06231C 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-locked { overflow: hidden; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 800;
  font-stretch: 87.5%;
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--white);
  text-wrap: balance;
}

p { text-wrap: pretty; }

::selection { background: var(--lime); color: var(--ink-900); }

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

#main-content { display: block; }

/* ---------- 4. 版心 ---------- */
.shell {
  width: min(100% - (var(--gutter) * 2), var(--shell-w));
  margin-inline: auto;
}

.shell--narrow { width: min(100% - (var(--gutter) * 2), var(--shell-narrow)); }

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

/* ---------- 5. 跳至主要内容 ---------- */
.skip-link {
  position: fixed;
  left: 14px;
  top: -70px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--lime);
  color: var(--ink-900);
  font-weight: 700;
  font-size: 14px;
  border-radius: var(--r-sm);
  transition: top var(--dur) var(--ease);
}

.skip-link:focus { top: 14px; }

/* ---------- 6. 双层头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(6, 35, 28, .93);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  backdrop-filter: blur(10px) saturate(140%);
}

@supports not ((backdrop-filter: blur(4px)) or (-webkit-backdrop-filter: blur(4px))) {
  .site-header { background: var(--ink-900); }
}

/* 6.1 上层品牌说明条 */
.header-top {
  background: var(--ink-800);
  border-bottom: 1px solid var(--line-2);
  font-size: 12.5px;
}

.header-top__inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 16px;
  min-height: var(--topbar-h);
  padding-block: 6px;
}

.header-top__brandline {
  font-family: var(--font-head);
  font-weight: 700;
  font-stretch: 87.5%;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--neon);
  white-space: nowrap;
}

.header-top__note {
  display: none;
  color: var(--gray);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.header-top__utility {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 18px;
}

.util-link {
  color: var(--gray);
  font-size: 12.5px;
  letter-spacing: .05em;
  padding-bottom: 1px;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.util-link:hover {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

@media (min-width: 720px) {
  .header-top__note { display: block; }
}

/* 6.2 下层品牌与栏目 */
.header-main { position: relative; z-index: 2; }

.header-main__inner {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: var(--mainbar-h);
  padding-block: 8px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: var(--white);
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: var(--neon);
  color: var(--ink-900);
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -.03em;
  clip-path: polygon(0 0, 100% 0, 100% 74%, 74% 100%, 0 100%);
  transition: background-color var(--dur) var(--ease);
}

.brand:hover .brand__mark { background: var(--lime); }

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

.brand__name {
  font-family: var(--font-head);
  font-weight: 800;
  font-stretch: 87.5%;
  font-size: 19px;
  line-height: 1.1;
  letter-spacing: .02em;
}

.brand__sub {
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--gray);
}

/* 6.3 主导航 */
.site-nav { margin-left: auto; }

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

.site-nav__item { display: block; }

.site-nav__link {
  position: relative;
  display: block;
  padding: 11px 13px;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  border-bottom: 2px solid transparent;
  transition: color var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.site-nav__link:hover {
  color: var(--neon);
  background: rgba(55, 230, 200, .08);
  border-bottom-color: rgba(55, 230, 200, .45);
}

.site-nav__link[aria-current="page"] {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

.site-nav__mobile-utility { display: none; }

/* 6.4 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  margin-left: auto;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  color: var(--white);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  transition: color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}

.nav-toggle:hover {
  color: var(--neon);
  border-color: var(--neon);
  background: rgba(55, 230, 200, .08);
}

.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 { display: inline; }

/* 6.5 移动端形态 */
@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    margin: 0;
    padding: 10px var(--gutter) 22px;
    background: var(--ink-800);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 30px 44px -32px #000;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
  }

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

  .site-nav__list { flex-direction: column; align-items: stretch; gap: 0; }

  .site-nav__link {
    padding: 14px 6px;
    font-size: 17px;
    border-bottom: 1px solid var(--line-2);
    border-left: 2px solid transparent;
  }

  .site-nav__link:hover {
    background: rgba(55, 230, 200, .06);
    border-bottom-color: var(--line-2);
    border-left-color: rgba(55, 230, 200, .5);
    padding-left: 14px;
  }

  .site-nav__link[aria-current="page"] {
    border-bottom-color: var(--line-2);
    border-left-color: var(--neon);
    padding-left: 14px;
    background: rgba(55, 230, 200, .07);
  }

  .site-nav__mobile-utility {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    padding-top: 18px;
    font-size: 13px;
  }
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  margin-top: clamp(48px, 7vw, 96px);
  background: var(--ink-800);
  border-top: 1px solid var(--line);
  color: var(--gray);
  font-size: 14px;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding-block: clamp(36px, 5vw, 60px);
}

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

@media (min-width: 1000px) {
  .footer__inner {
    grid-template-columns: 1.45fr 1fr 1fr 1fr 1.3fr;
    gap: 34px;
  }
}

.footer__brand { min-width: 0; }

.footer__logo {
  font-family: var(--font-head);
  font-weight: 800;
  font-stretch: 87.5%;
  font-size: 22px;
  letter-spacing: .02em;
  color: var(--white);
}

.footer__tag {
  margin-top: 8px;
  color: var(--neon);
  font-size: 13px;
  letter-spacing: .12em;
}

.footer__meta {
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--gray);
  line-height: 1.8;
}

.footer__col { min-width: 0; }

.footer__title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--white);
}

.footer__title::before {
  content: "";
  width: 9px;
  height: 2px;
  background: var(--neon);
  flex: 0 0 auto;
}

.footer__list { display: grid; gap: 9px; }

.footer__link {
  color: var(--gray);
  font-size: 13.5px;
  transition: color var(--dur) var(--ease);
}

.footer__link:hover { color: var(--neon); }

.footer__contact-item { display: grid; gap: 2px; margin-bottom: 12px; }

.footer__contact-label {
  font-family: var(--font-num);
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--neon);
  text-transform: uppercase;
}

.footer__contact-value {
  color: var(--white);
  font-size: 13.5px;
  line-height: 1.65;
  overflow-wrap: anywhere;
}

.footer__legal {
  background: var(--ink-900);
  border-top: 1px solid var(--line-2);
}

.footer__legal-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 24px;
  padding-block: 16px;
  font-size: 12.5px;
}

.footer__copy,
.footer__icp { color: var(--gray); }

.footer__legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-left: auto;
}

.footer__legal-links .footer__link { font-size: 12.5px; }

/* ---------- 8. 章节与版式节奏 ---------- */
.section { padding-block: clamp(44px, 6vw, 84px); }
.section--tight { padding-block: clamp(26px, 3.6vw, 46px); }

.section--ink {
  background: var(--ink-800);
  border-block: 1px solid var(--line-2);
}

.section--paper {
  background: var(--paper);
  color: var(--ink-900);
}

.section--paper h1,
.section--paper h2,
.section--paper h3,
.section--paper h4 { color: var(--ink-900); }

.section--paper .section__lede { color: rgba(6, 35, 28, .72); }
.section--paper .eyebrow { color: #0B5C4A; }
.section--paper .num { color: #0B5C4A; }

.section__head {
  display: grid;
  gap: 10px;
  max-width: 760px;
  margin-bottom: clamp(22px, 3vw, 38px);
}

.section__head--wide { max-width: none; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--neon);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}

.section__title { font-size: clamp(26px, 3.4vw, 40px); }

.section__lede { color: var(--gray); font-size: 16px; }

/* ---------- 9. 网格与分栏 ---------- */
.grid {
  display: grid;
  gap: clamp(14px, 2vw, 24px);
}

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(232px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(186px, 1fr)); }

.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
}

@media (min-width: 960px) {
  .split { grid-template-columns: 1.6fr 1fr; }
  .split--reverse { grid-template-columns: 1fr 1.6fr; }
}

/* ---------- 10. 卡片 ---------- */
.card {
  position: relative;
  background: var(--ink-700);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: clamp(16px, 2vw, 24px);
  box-shadow: var(--shadow-card);
  transition: transform var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--neon);
  background: rgba(18, 58, 51, .92);
}

.card__kicker {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--neon);
}

.card__title { margin-top: 8px; font-size: 20px; }

.card__text {
  margin-top: 8px;
  font-size: 14.5px;
  color: var(--gray);
  line-height: 1.75;
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-top: 16px;
  font-size: 12.5px;
  color: var(--gray);
}

.card--offset { margin-top: 0; }

@media (min-width: 960px) {
  .card--offset { margin-top: 30px; }
}

.card--paper {
  background: var(--paper);
  color: var(--ink-900);
  border-color: var(--line-ink);
}

.card--paper:hover { background: #F3EEE2; border-color: #0B5C4A; }
.card--paper .card__title { color: var(--ink-900); }
.card--paper .card__text { color: rgba(6, 35, 28, .74); }
.card--paper .card__kicker { color: #0B5C4A; }
.card--paper .card__meta { color: rgba(6, 35, 28, .6); }

/* ---------- 11. 数字 ---------- */
.num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1;
  color: var(--lime);
}

.num--xl { font-size: clamp(40px, 7vw, 56px); }
.num--lg { font-size: 36px; }
.num--md { font-size: 24px; }
.num--mute { color: var(--gray); }

/* ---------- 12. 标签 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--gray);
  white-space: nowrap;
}

.chip--neon { border-color: rgba(55, 230, 200, .5); color: var(--neon); }
.chip--signal { border-color: rgba(255, 106, 43, .55); color: var(--signal); }
.chip--lime { border-color: rgba(200, 255, 61, .5); color: var(--lime); }

/* ---------- 13. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: .03em;
  transition: background-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}

.btn--primary { background: var(--signal); color: #1A0A03; }
.btn--primary:hover { background: #FF8149; transform: translateY(-2px); }

.btn--ghost { border-color: var(--line); color: var(--white); }
.btn--ghost:hover {
  border-color: var(--neon);
  color: var(--neon);
  background: rgba(55, 230, 200, .08);
}

.btn--quiet { color: var(--neon); padding-inline: 4px; }
.btn--quiet:hover { color: var(--lime); }

/* ---------- 14. 面包屑 ---------- */
.breadcrumb { margin-bottom: 18px; font-size: 12.5px; }

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--gray);
}

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

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: rgba(143, 163, 156, .5);
}

.breadcrumb__link { color: var(--gray); transition: color var(--dur) var(--ease); }
.breadcrumb__link:hover { color: var(--neon); }
.breadcrumb__item[aria-current="page"] { color: var(--white); }

/* ---------- 15. 数据表 ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-700);
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  min-width: 560px;
  font-size: 14.5px;
}

.data-table th,
.data-table td {
  padding: 12px 15px;
  text-align: left;
  white-space: nowrap;
  border-bottom: 1px solid var(--line-2);
}

.data-table thead th {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gray);
  background: rgba(14, 18, 17, .8);
}

.data-table tbody tr:nth-child(even) { background: rgba(18, 58, 51, .34); }
.data-table tbody tr:hover { background: rgba(55, 230, 200, .08); }
.data-table tbody tr:last-child td { border-bottom: 0; }

.data-table th:first-child,
.data-table td:first-child {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--ink-800);
}

.data-table tbody tr:nth-child(even) td:first-child { background: #0B2823; }
.data-table thead th:first-child { background: #0B1210; }

.data-table .is-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  text-align: right;
  color: var(--lime);
}

/* ---------- 16. 标签页 ---------- */
.tabs { margin-top: 6px; }

.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  border-bottom: 1px solid var(--line);
}

.tabs__tab {
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: var(--r-sm) var(--r-sm) 0 0;
  background: rgba(14, 18, 17, .55);
  color: var(--gray);
  font-size: 14px;
  font-weight: 600;
  transition: color var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.tabs__tab:hover { color: var(--white); border-color: var(--neon); }

.tabs__tab[aria-selected="true"] {
  background: var(--neon);
  border-color: var(--neon);
  color: var(--ink-900);
}

.tabs__panel { padding-top: 22px; }

/* ---------- 17. 索引时间轴 ---------- */
.timeline { display: grid; margin-top: 22px; }

.timeline__item {
  position: relative;
  padding: 0 0 26px 28px;
  border-left: 1px solid var(--line);
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 0 4px rgba(55, 230, 200, .14);
}

.timeline__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.timeline__index {
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--lime);
}

.timeline__title { margin-top: 5px; font-size: 20px; }

.timeline__text {
  margin-top: 6px;
  font-size: 14.5px;
  color: var(--gray);
  line-height: 1.75;
}

/* ---------- 18. 图片容器（页面阶段放占位） ---------- */
.figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(135deg, var(--ink-700), var(--ink-800));
}

.figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 35, 28, 0) 42%, rgba(6, 35, 28, .78) 100%);
  pointer-events: none;
}

.figure__img {
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.figure__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  padding: 12px 14px;
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--white);
}

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

.figure--plain::after { display: none; }

.figure--ph {
  background-color: var(--ink-700);
  background-image: repeating-linear-gradient(135deg,
    rgba(55, 230, 200, .12) 0 12px,
    rgba(55, 230, 200, 0) 12px 24px);
}

/* ---------- 19. 浅色面板与正文 ---------- */
.panel {
  background: var(--paper);
  color: var(--ink-900);
  border: 1px solid var(--line-ink);
  border-radius: var(--r-md);
  padding: clamp(20px, 3vw, 36px);
}

.panel__title { color: var(--ink-900); font-size: 24px; }
.panel .num { color: #0B5C4A; }

.prose { font-size: 16px; line-height: 1.8; }
.prose > * + * { margin-top: 1em; }
.prose h2 { font-size: 24px; margin-top: 1.6em; }
.prose h3 { font-size: 20px; margin-top: 1.4em; }
.prose a { color: var(--neon); text-decoration: underline; text-underline-offset: 3px; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose ul { list-style: none; }
.prose ul li { position: relative; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: -1.1em;
  top: .75em;
  width: 8px;
  height: 2px;
  background: var(--neon);
}
.prose ol { list-style: decimal; }
.prose li + li { margin-top: .5em; }
.section--paper .prose a,
.panel .prose a { color: #0B5C4A; }
.section--paper .prose,
.panel .prose { color: var(--ink-900); }

/* ---------- 20. JS 注入组件 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 2px;
  z-index: 120;
  background: linear-gradient(90deg, var(--neon), var(--lime));
  pointer-events: none;
  transition: width 90ms linear;
}

.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 90;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(14, 18, 17, .94);
  color: var(--neon);
  font-family: var(--font-num);
  font-size: 17px;
  line-height: 1;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--dur) var(--ease),
              transform var(--dur) var(--ease),
              visibility var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              color var(--dur) var(--ease);
}

.to-top[data-visible="true"] {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover { border-color: var(--neon); color: var(--lime); }

/* ---------- 21. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

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

  .to-top { transform: none; }
}

/* ---------- 22. 宽屏排版微调 ---------- */
@media (min-width: 1200px) {
  .header-main__inner { gap: 26px; }
  .site-nav__link { padding-inline: 15px; }
}