/* ============================================================
   悟空体育 · 共享样式 /assets/site.css
   夜场战术板 + 记分牌体系
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--hdr) + 18px);
}

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

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

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

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

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

table { border-collapse: collapse; border-spacing: 0; }

button { background: none; border: 0; }

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩 */
  --board: #0B0C0E;
  --panel: #14171B;
  --panel-2: #1A1E24;
  --line: #232830;
  --paper: #F4F1E8;
  --amber: #FFB300;
  --orange: #FF7A18;
  --green: #2FA84F;
  --blue: #3FA0FF;
  --red: #E04A3F;
  --index: #9AA1AB;
  --muted: rgba(244, 241, 232, 0.76);
  --ink: #0B0C0E;

  /* 尺寸 */
  --wrap: 1240px;
  --gutter: clamp(18px, 4vw, 44px);
  --hdr: 66px;
  --r: 2px;

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

/* ---------- 3. 基础排版 ---------- */
body {
  background-color: var(--board);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 16.5px;
  line-height: 1.75;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  -webkit-tap-highlight-color: rgba(255, 179, 0, 0.18);
}

#main-content { scroll-margin-top: calc(var(--hdr) + 14px); }

h1, h2, h3, h4 {
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 800;
}

h1 { font-size: clamp(32px, 5vw, 62px); }
h2 { font-size: clamp(26px, 3.6vw, 46px); }
h3 { font-size: clamp(19px, 2.1vw, 26px); }
h4 { font-size: 18px; }

.mono { font-family: var(--font-mono); letter-spacing: 0.04em; }

.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;
}

/* ---------- 4. 可访问性 ---------- */
:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: var(--r);
}

.sk-skip {
  position: fixed;
  top: 10px; left: 10px;
  z-index: 200;
  padding: 11px 16px;
  background-color: var(--amber);
  color: var(--ink);
  font: 700 12px/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: var(--r);
  transform: translateY(-160%);
  transition: transform 0.22s linear;
}
.sk-skip:focus { transform: translateY(0); }

/* ---------- 5. 布局骨架 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.sec {
  position: relative;
  padding-block: clamp(52px, 7vw, 104px);
}
.sec--tight { padding-block: clamp(34px, 5vw, 62px); }
.sec--panel { background-color: var(--panel); }

.sec--paper {
  background-color: #F4F1E8;
  color: var(--ink);
  --paper: #0B0C0E;
  --panel: #FBF9F2;
  --panel-2: #EFEBDE;
  --line: #D8D3C4;
  --index: #6B6F78;
  --muted: rgba(11, 12, 14, 0.74);
}
.sec--paper .sec-num { color: var(--orange); }

.rule { height: 1px; background-color: var(--line); border: 0; margin: 0; }

.ticks {
  height: 6px;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 48px);
}

.grid {
  display: grid;
  gap: clamp(16px, 2.2vw, 28px);
}
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--split { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--aside { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); }

/* ---------- 6. 通用文字组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 11px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  font: 600 11px/1 var(--font-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--index);
}

.display {
  font-size: clamp(38px, 7.4vw, 86px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.03em;
}
.display em { font-style: normal; color: var(--amber); }

.lede {
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.7;
  color: var(--muted);
  max-width: 46ch;
}

.sec-head {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(18px, 3vw, 40px);
  align-items: start;
  margin-bottom: clamp(26px, 3.4vw, 48px);
}
.sec-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.4vw, 54px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--amber);
}
.sec-kicker {
  display: block;
  margin-top: 10px;
  font: 600 11px/1.5 var(--font-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--index);
}
.sec-title { margin: 0; }

.prose { max-width: 70ch; }
.prose p { margin-bottom: 1.05em; max-width: 62ch; }
.prose h3 { margin: 1.6em 0 0.6em; }
.prose ul { margin-bottom: 1.1em; }
.prose li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 0.5em;
}
.prose li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.72em;
  width: 6px; height: 1px;
  background-color: var(--amber);
}
.prose strong { color: var(--amber); font-weight: 700; }

/* ---------- 7. 页头 ---------- */
.sk-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 90;
  background-color: transparent;
  color: var(--paper);
  transition: background-color 0.28s linear, box-shadow 0.28s linear;
}
.sk-header[data-stuck] {
  background-color: rgba(11, 12, 14, 0.96);
  box-shadow: 0 1px 0 0 var(--line);
}

.sk-progress {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 2;
  background-color: transparent;
  pointer-events: none;
}
.sk-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background-image: linear-gradient(90deg, var(--orange), var(--amber));
}

.sk-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 40px);
  min-height: var(--hdr);
  padding-block: 10px;
}

.sk-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}
.sk-brand__mark {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  background-color: var(--amber);
  color: var(--ink);
  font: 800 16px/1 var(--font-sans);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
}
.sk-brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.sk-brand__name { font-size: 16px; font-weight: 800; letter-spacing: 0.02em; }
.sk-brand__live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
  font: 600 10px/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--index);
}

.dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background-color: var(--index);
  flex: 0 0 auto;
}
.dot--live {
  background-color: var(--green);
  animation: livepulse 2.4s ease-in-out infinite;
}
@keyframes livepulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.sk-nav { margin-inline-start: auto; }
.sk-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 26px);
}
.sk-nav__link {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  font-size: 15px;
  color: rgba(244, 241, 232, 0.78);
  transition: color 0.2s linear;
}
.sk-nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 2px;
  height: 2px;
  background-color: var(--amber);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.24s linear;
}
.sk-nav__link:hover { color: var(--paper); }
.sk-nav__link:hover::after { transform: scaleX(1); }
.sk-nav__link[aria-current="page"] { color: var(--paper); font-weight: 700; }
.sk-nav__link[aria-current="page"]::after { transform: scaleX(1); }

.sk-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.sk-nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  color: var(--paper);
  font: 600 11px/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 0.2s linear, color 0.2s linear;
}
.sk-nav-toggle:hover { border-color: var(--amber); color: var(--amber); }
.sk-nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px; height: 10px;
}
.sk-nav-toggle__bars::before,
.sk-nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 1.5px;
  background-color: var(--amber);
  transition: transform 0.22s linear, top 0.22s linear, bottom 0.22s linear;
}
.sk-nav-toggle__bars::before { top: 0; }
.sk-nav-toggle__bars::after { bottom: 0; }
.sk-nav-toggle[aria-expanded="true"] .sk-nav-toggle__bars::before {
  top: 4px;
  transform: rotate(45deg);
}
.sk-nav-toggle[aria-expanded="true"] .sk-nav-toggle__bars::after {
  bottom: 4px;
  transform: rotate(-45deg);
}

.sk-header__ticks {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 6px;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 48px);
  opacity: 0;
  transition: opacity 0.28s linear;
}
.sk-header[data-stuck] .sk-header__ticks { opacity: 1; }

/* ---------- 8. 页脚 ---------- */
.sk-footer {
  position: relative;
  background-color: var(--panel);
  border-top: 1px solid var(--line);
  color: var(--paper);
  padding-block: clamp(42px, 6vw, 74px) 24px;
}
.sk-footer::before {
  content: "";
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 6px;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 48px);
}

.sk-footer__grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr 1.35fr 1.2fr;
  gap: clamp(24px, 3vw, 44px);
}

.sk-footer__title {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 16px;
  font: 600 11px/1 var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--index);
}
.sk-footer__title::before {
  content: "";
  width: 14px; height: 1px;
  background-color: var(--amber);
  flex: 0 0 auto;
}

.sk-footer__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.sk-footer__list a {
  display: inline-block;
  font-size: 14.5px;
  color: var(--muted);
  transition: color 0.2s linear, padding-left 0.2s linear;
}
.sk-footer__list a:hover {
  color: var(--amber);
  padding-left: 5px;
}
.sk-footer__list a[aria-current="page"] { color: var(--amber); }

.sk-footer__facts {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.sk-footer__label {
  display: block;
  margin-bottom: 4px;
  font: 600 11px/1.4 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--index);
}
.sk-footer__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.65;
  letter-spacing: 0.02em;
  color: var(--paper);
  word-break: break-word;
}

.sk-footer__col--brand .sk-footer__slogan {
  max-width: 26ch;
  margin-bottom: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.sk-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  margin-top: clamp(30px, 4vw, 54px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--index);
}

.totop {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 80;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 14px;
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  color: var(--paper);
  font: 600 11px/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.26s linear, transform 0.26s linear, visibility 0.26s linear,
              background-color 0.2s linear, border-color 0.2s linear, color 0.2s linear;
}
.totop[data-show] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.totop:hover {
  background-color: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
}

/* ---------- 9. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background-color: transparent;
  color: var(--paper);
  font: 600 12.5px/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: center;
  cursor: pointer;
  transition: background-color 0.2s linear, color 0.2s linear,
              border-color 0.2s linear, transform 0.2s linear;
}
.btn:hover {
  border-color: var(--amber);
  color: var(--amber);
}
.btn--amber {
  background-color: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
}
.btn--amber:hover {
  background-color: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}
.btn--ghost { background-color: transparent; color: var(--paper); }
.btn--sm { padding: 9px 14px; font-size: 11.5px; }
.btn--block { width: 100%; }

/* ---------- 10. 标签 / 序号 / 数字 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  font: 600 11px/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--index);
}
.tag--amber { color: var(--amber); border-color: rgba(255, 179, 0, 0.5); }
.tag--green { color: var(--green); border-color: rgba(47, 168, 79, 0.5); }
.tag--blue { color: var(--blue); border-color: rgba(63, 160, 255, 0.5); }
.tag--red { color: var(--red); border-color: rgba(224, 74, 63, 0.5); }

.num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  line-height: 0.95;
}
.num--xl { font-size: clamp(40px, 8vw, 84px); }
.num--lg { font-size: clamp(28px, 4vw, 44px); }
.num--amber { color: var(--amber); }
.num__unit {
  margin-left: 0.5em;
  font-size: 0.36em;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--index);
}

/* ---------- 11. 卡片 ---------- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px;
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  transition: border-color 0.22s linear, transform 0.22s linear;
}
.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 16px; height: 16px;
  border-top: 2px solid var(--amber);
  border-left: 2px solid var(--amber);
  opacity: 0.85;
  pointer-events: none;
}
.card:hover {
  border-color: rgba(255, 179, 0, 0.5);
  transform: translateY(-2px);
}
.card__label {
  font: 600 11px/1 var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--index);
}
.card__title {
  font-size: 19px;
  font-weight: 800;
  line-height: 1.3;
}
.card__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--index);
}
.card__note {
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}
.card__fav {
  position: absolute;
  top: 12px; right: 12px;
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background-color: transparent;
  color: var(--index);
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  transition: color 0.2s linear, border-color 0.2s linear, background-color 0.2s linear;
}
.card__fav:hover { color: var(--amber); border-color: var(--amber); }
.card__fav[aria-pressed="true"] {
  background-color: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
}

/* ---------- 12. 数据表 / 赛程表 ---------- */
.board {
  width: 100%;
  font-size: 15px;
}
.board caption {
  padding-bottom: 12px;
  text-align: left;
  font: 600 11px/1.5 var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--index);
}
.board th,
.board td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.board thead th {
  font: 600 11px/1.4 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--index);
  border-bottom: 1px solid var(--index);
}
.board tbody tr:hover { background-color: rgba(63, 160, 255, 0.07); }
.board .num-cell {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* ---------- 13. 侧栏索引 ---------- */
.rail {
  position: sticky;
  top: calc(var(--hdr) + 16px);
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 12px;
  border-left: 2px solid var(--line);
  font-size: 14px;
  color: var(--muted);
  transition: color 0.2s linear, border-color 0.2s linear, background-color 0.2s linear;
}
.rail__link::before {
  content: attr(data-index);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--index);
  transition: color 0.2s linear;
}
.rail__link:hover { color: var(--paper); border-left-color: var(--index); }
.rail__link[aria-current="true"] {
  color: var(--paper);
  border-left-color: var(--amber);
  background-color: rgba(255, 179, 0, 0.06);
}
.rail__link[aria-current="true"]::before { color: var(--amber); }

/* ---------- 14. 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 18px;
  font: 600 11.5px/1.4 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--index);
}
.crumbs a { color: var(--index); transition: color 0.2s linear; }
.crumbs a:hover { color: var(--amber); }
.crumbs__sep { color: var(--line); }
.crumbs [aria-current="page"] { color: var(--paper); }

/* ---------- 15. 图片容器 ---------- */
.fig {
  position: relative;
  display: flex;
  flex-direction: column;
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
}
.fig__media {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background-image:
    radial-gradient(120% 100% at 72% 0%, rgba(255, 179, 0, 0.14), transparent 62%),
    linear-gradient(160deg, #191D23, #0B0C0E 72%);
}
.fig--wide .fig__media { aspect-ratio: 21 / 9; }
.fig--tall .fig__media { aspect-ratio: 3 / 4; }
.fig--square .fig__media { aspect-ratio: 1 / 1; }
.fig::after {
  content: "";
  position: absolute;
  top: 8px; right: 8px;
  width: 12px; height: 12px;
  border-top: 1px solid var(--amber);
  border-right: 1px solid var(--amber);
  pointer-events: none;
}
.fig__cap {
  padding: 10px 13px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.5;
  letter-spacing: 0.06em;
  color: var(--index);
}

/* ---------- 16. 入场动效 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.32s linear, transform 0.32s linear;
}
[data-reveal].is-in {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 17. 响应式 ---------- */
@media (max-width: 1000px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--aside { grid-template-columns: 1fr; }

  .rail {
    position: static;
    flex-direction: row;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
  }
  .rail__link {
    border-left: 0;
    border-bottom: 2px solid var(--line);
    white-space: nowrap;
    padding: 9px 11px;
  }
  .rail__link[aria-current="true"] { background-color: transparent; border-bottom-color: var(--amber); }

  .sec-head { grid-template-columns: 1fr; gap: 14px; }
  .sk-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .sk-nav-toggle { display: inline-flex; }

  .sk-nav {
    position: fixed;
    inset: var(--hdr) 0 auto;
    margin: 0;
    max-height: calc(100vh - var(--hdr));
    overflow-y: auto;
    padding: 6px var(--gutter) 20px;
    background-color: var(--panel);
    border-bottom: 1px solid var(--line);
    clip-path: inset(0 0 100% 0);
    visibility: hidden;
    transition: clip-path 0.26s linear, visibility 0.26s linear;
  }
  .sk-nav[data-open] {
    clip-path: inset(0 0 0 0);
    visibility: visible;
  }
  .sk-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .sk-nav__link {
    display: block;
    padding: 15px 2px;
    border-bottom: 1px solid var(--line);
    font-size: 17px;
  }
  .sk-nav__link::after { display: none; }
  .sk-nav__link[aria-current="page"] {
    padding-left: 13px;
    border-left: 3px solid var(--amber);
    color: var(--amber);
  }
}

@media (max-width: 640px) {
  .grid--2, .grid--3, .grid--4, .grid--split { grid-template-columns: 1fr; }
  .sk-footer__grid { grid-template-columns: 1fr; }
  .sk-footer__base { justify-content: flex-start; }
  .fig__media { aspect-ratio: 4 / 3; }
  .fig--wide .fig__media { aspect-ratio: 16 / 9; }
  .fig--tall .fig__media { aspect-ratio: 3 / 4; }
}

@media (max-width: 560px) {
  :root { --hdr: 62px; }
  .sk-brand__live { display: none; }
  .sk-brand__mark { width: 27px; height: 27px; font-size: 15px; }
  .sk-header__actions .btn--sm { padding: 8px 10px; font-size: 11px; letter-spacing: 0.05em; }
  .sk-nav-toggle { padding: 8px 10px; }
  .sk-nav-toggle__text { display: none; }
}

/* ---------- 18. 降低动态效果 ---------- */
@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;
  }

  .dot--live { animation: none; }

  [data-reveal] { opacity: 1; transform: none; }
}