/* =========================================================
   星空体育主站 · /assets/site.css
   共享外壳 / 变量 / 排版 / 基础组件
   ========================================================= */

/* ---------- reset ---------- */
*,
*::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, dd {
  margin: 0;
}

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

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

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

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

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

/* ---------- 变量 ---------- */
:root {
  --space: #0B0F1A;
  --void-deep: #05070D;
  --nebula: #6B4EFF;
  --indigo: #3A2E7A;
  --cyan: #00E5FF;
  --cyan-soft: #7FE9F5;
  --ember: #FF8A3D;
  --paper-solid: #F2EDE4;

  --bg: #0B0F1A;
  --bg-deep: #05070D;
  --surf: #1C2438;
  --surf-2: #141B2C;
  --txt: #F2EDE4;
  --txt-dim: #D8DEE9;
  --line: rgba(216, 222, 233, 0.18);
  --line-2: rgba(216, 222, 233, 0.42);
  --accent-text: #7FE9F5;
  --data: #00E5FF;

  --shadow-hard: 8px 8px 0 0 rgba(5, 7, 13, 0.85);
  --shadow-mid: 6px 6px 0 0 rgba(5, 7, 13, 0.7);

  --rail: 88px;
  --ticker: 44px;
  --shell: 1320px;

  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "HarmonyOS Sans SC", "Inter", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

html[data-theme="light"] {
  --bg: #F2EDE4;
  --bg-deep: #E5DDD0;
  --surf: #FFFFFF;
  --surf-2: #EFE9DF;
  --txt: #0B0F1A;
  --txt-dim: #4C5468;
  --line: rgba(11, 15, 26, 0.16);
  --line-2: rgba(11, 15, 26, 0.42);
  --accent-text: #3A2E7A;
  --data: #0B6E7A;
  --shadow-hard: 8px 8px 0 0 rgba(11, 15, 26, 0.85);
  --shadow-mid: 6px 6px 0 0 rgba(11, 15, 26, 0.7);
}

/* ---------- 基础排版 ---------- */
body {
  position: relative;
  z-index: 0;
  min-height: 100vh;
  padding-top: var(--ticker);
  padding-left: var(--rail);
  background: var(--bg);
  color: var(--txt);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 32px 32px;
  -webkit-mask-image: radial-gradient(120% 90% at 70% 0%, rgba(0, 0, 0, 0.75), transparent 72%);
  mask-image: radial-gradient(120% 90% at 70% 0%, rgba(0, 0, 0, 0.75), transparent 72%);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--txt);
}

h1 { font-size: clamp(32px, 5.2vw, 72px); text-shadow: 0 0 12px rgba(0, 229, 255, 0.28); }
h2 { font-size: clamp(26px, 3.4vw, 44px); }
h3 { font-size: clamp(20px, 2.4vw, 30px); }
h4 { font-size: clamp(17px, 1.6vw, 21px); }

p { max-width: 68ch; }

::selection { background: var(--nebula); color: #fff; }

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

/* ---------- 布局容器 ---------- */
.page-shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 clamp(18px, 4vw, 56px);
}

.shell-main {
  display: block;
  padding-top: clamp(24px, 4vw, 48px);
  padding-bottom: clamp(48px, 8vw, 120px);
}

.grid { display: grid; gap: clamp(16px, 2.2vw, 28px); }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.2vw, 28px);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(16px, 2.2vw, 28px);
}

/* ---------- skip link ---------- */
.skip-link {
  position: fixed;
  top: -140px;
  left: 16px;
  z-index: 300;
  padding: 12px 18px;
  background: var(--nebula);
  color: #fff;
  border: 2px solid var(--paper-solid);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  transition: top 0.18s var(--ease);
}

.skip-link:focus {
  top: calc(var(--ticker) + 12px);
}

/* ---------- 顶部实时比分条 ---------- */
.score-ticker {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  height: var(--ticker);
  display: flex;
  align-items: center;
  background: var(--void-deep);
  border-bottom: 1px solid rgba(216, 222, 233, 0.2);
  overflow: hidden;
}

.score-ticker__flag {
  flex: none;
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 14px;
  background: var(--nebula);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
}

.score-ticker__viewport {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  height: 100%;
  overflow: hidden;
}

.score-ticker__track {
  display: flex;
  width: max-content;
  height: 100%;
  animation: ticker-roll 46s linear infinite;
  will-change: transform;
}

.score-ticker:hover .score-ticker__track,
.score-ticker:focus-within .score-ticker__track,
.score-ticker[data-paused="true"] .score-ticker__track {
  animation-play-state: paused;
}

@keyframes ticker-roll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.ticker-group {
  display: flex;
  height: 100%;
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 100%;
  padding: 0 18px;
  border-right: 1px solid rgba(216, 222, 233, 0.14);
  color: #D8DEE9;
  font-size: 13px;
  white-space: nowrap;
  transition: background 0.18s var(--ease);
}

.ticker-item:hover { background: rgba(107, 78, 255, 0.26); }

.ticker-item__lg {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: #7FE9F5;
  padding: 2px 6px;
  border: 1px solid rgba(127, 233, 245, 0.45);
}

.ticker-item__side { color: #D8DEE9; }

.ticker-item__score {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 16px;
  font-weight: 700;
  color: #00E5FF;
  letter-spacing: 0.04em;
}

.ticker-item__score i { font-style: normal; opacity: 0.5; margin: 0 1px; }

.ticker-item__state {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  padding: 2px 6px;
  color: rgba(216, 222, 233, 0.7);
  border: 1px solid rgba(216, 222, 233, 0.28);
}

.ticker-item__state.is-live {
  color: #FF8A3D;
  border-color: #FF8A3D;
}

.ticker-pause {
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: calc(var(--ticker) - 6px);
  height: 100%;
  background: var(--void-deep);
  border-left: 1px solid rgba(216, 222, 233, 0.2);
  color: #7FE9F5;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0;
  transition: background 0.18s var(--ease), color 0.18s var(--ease);
}

.ticker-pause:hover { background: var(--nebula); color: #fff; }
.ticker-pause[aria-pressed="true"] { color: #FF8A3D; }

/* ---------- 星环轨道导航 ---------- */
.site-rail {
  position: fixed;
  top: var(--ticker);
  left: 0;
  bottom: 0;
  z-index: 70;
  width: var(--rail);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 18px 0 22px;
  background: var(--bg-deep);
  border-right: 1px solid var(--line-2);
  overflow: visible;
}

.brand {
  flex: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 2px;
}

.brand__mark {
  position: relative;
  display: block;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--nebula);
  box-shadow: 0 0 14px rgba(107, 78, 255, 0.55);
}

.brand__mark::before {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 50%;
  border: 1px dashed rgba(0, 229, 255, 0.55);
}

.brand__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 8px;
  height: 8px;
  margin: -4px 0 0 -4px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
}

.brand__mark--lg { width: 46px; height: 46px; }
.brand__mark--lg::before { inset: 7px; }
.brand__mark--lg::after { width: 11px; height: 11px; margin: -5.5px 0 0 -5.5px; }

.brand__text {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.brand__name {
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 15px;
  letter-spacing: 0.3em;
  color: var(--txt);
  text-shadow: 0 0 12px rgba(0, 229, 255, 0.28);
}

.brand__sub {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.22em;
  color: var(--txt-dim);
  opacity: 0.75;
}

.rail-nav {
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
}

.rail-nav__list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
}

.rail-link {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 62px;
  margin: 0 auto;
  padding: 9px 0;
  border: 2px solid transparent;
  color: var(--txt-dim);
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.rail-link__idx {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.08em;
}

.rail-link__label {
  position: absolute;
  left: calc(100% + 12px);
  top: 50%;
  z-index: 5;
  padding: 6px 12px;
  background: var(--nebula);
  color: #fff;
  border: 2px solid var(--space);
  box-shadow: 4px 4px 0 0 rgba(0, 0, 0, 0.6);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-50%) translateX(-10px);
  transition: opacity 0.2s var(--ease), transform 0.22s var(--ease);
}

.rail-link:hover,
.rail-link:focus-visible {
  color: var(--txt);
  background: rgba(107, 78, 255, 0.2);
  border-color: var(--bg-deep);
}

.rail-link:hover .rail-link__label,
.rail-link:focus-visible .rail-link__label {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

.rail-link[aria-current="page"] {
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.08);
  border-color: var(--cyan);
}

.rail-link[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: -14px;
  top: 50%;
  width: 4px;
  height: 26px;
  transform: translateY(-50%);
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
}

.rail-tools {
  flex: none;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.tool-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  width: 62px;
  padding: 8px 0;
  color: var(--txt-dim);
  border: 2px solid var(--line);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.tool-btn:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(0, 229, 255, 0.08);
}

.tool-btn__ico { font-size: 15px; line-height: 1; }

.tool-btn__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
}

.rail-cta {
  display: block;
  width: 62px;
  padding: 14px 8px;
  writing-mode: vertical-rl;
  text-align: center;
  background: var(--nebula);
  color: #fff;
  border: 2px solid var(--space);
  box-shadow: 4px 4px 0 0 rgba(5, 7, 13, 0.85);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
  line-height: 1.2;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), background 0.18s var(--ease);
}

.rail-cta:hover {
  background: var(--cyan);
  color: #04121A;
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 0 rgba(5, 7, 13, 0.85);
}

/* ---------- 移动端星环按钮 ---------- */
.nav-toggle {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 95;
  display: none;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--nebula);
  border: 2px solid var(--space);
  box-shadow: 0 0 0 2px rgba(0, 229, 255, 0.35), 6px 6px 0 0 rgba(5, 7, 13, 0.7);
}

.nav-toggle__ring {
  position: absolute;
  inset: 7px;
  border-radius: 50%;
  border: 2px dashed rgba(255, 255, 255, 0.55);
  animation: ring-spin 10s linear infinite;
}

@keyframes ring-spin { to { transform: rotate(360deg); } }

.nav-toggle__bars {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 22px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.22s var(--ease), width 0.22s var(--ease), opacity 0.18s var(--ease);
}

.nav-toggle__bars span:nth-child(1) { width: 100%; }
.nav-toggle__bars span:nth-child(2) { width: 72%; }
.nav-toggle__bars span:nth-child(3) { width: 46%; }

.site-header[data-open="true"] .nav-toggle__bars span:nth-child(1) {
  width: 100%;
  transform: translateY(7px) rotate(45deg);
}

.site-header[data-open="true"] .nav-toggle__bars span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0.3);
}

.site-header[data-open="true"] .nav-toggle__bars span:nth-child(3) {
  width: 100%;
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 9vw, 120px);
  background: var(--bg-deep);
  border-top: 2px solid var(--line-2);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.45;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 32px 32px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 78%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 78%);
}

.site-footer::after {
  content: "";
  position: absolute;
  right: -140px;
  top: -160px;
  z-index: 0;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  border: 2px dashed rgba(0, 229, 255, 0.18);
  pointer-events: none;
}

.footer-inner {
  position: relative;
  z-index: 2;
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(40px, 6vw, 72px) clamp(18px, 4vw, 56px) clamp(28px, 4vw, 44px);
  display: grid;
  grid-template-columns: minmax(200px, 1fr) minmax(0, 2.7fr);
  gap: clamp(28px, 4vw, 64px);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}

.footer-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  letter-spacing: 0.04em;
  color: var(--txt);
  text-shadow: 0 0 12px rgba(0, 229, 255, 0.24);
}

.footer-brand__tag {
  max-width: 26ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--txt-dim);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 36px);
}

.footer-col__head {
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--cyan-soft);
}

html[data-theme="light"] .footer-col__head { color: var(--indigo); }

.footer-col li + li { margin-top: 10px; }

.footer-col a,
.footer-col span {
  display: inline-block;
  font-size: 14px;
  line-height: 1.6;
  color: var(--txt-dim);
  transition: transform 0.18s var(--ease), color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.footer-col a:hover,
.footer-col a:focus-visible {
  color: var(--cyan);
  transform: translateX(6px);
  box-shadow: -3px 0 0 0 var(--cyan);
}

.footer-col span { max-width: 30ch; }

.footer-base {
  position: relative;
  z-index: 2;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 18px clamp(18px, 4vw, 56px) 26px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--txt-dim);
}

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  background: var(--nebula);
  color: #fff;
  border: 2px solid var(--space);
  box-shadow: var(--shadow-mid);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.04em;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), background 0.18s var(--ease), color 0.18s var(--ease);
}

.btn:hover { transform: translate(-2px, -2px); box-shadow: 9px 9px 0 0 rgba(5, 7, 13, 0.8); }
.btn:active { transform: translate(2px, 2px); box-shadow: 3px 3px 0 0 rgba(5, 7, 13, 0.8); }

.btn--ghost {
  background: transparent;
  color: var(--txt);
  border-color: var(--cyan);
}

.btn--ghost:hover { background: rgba(0, 229, 255, 0.12); color: var(--txt); }

.btn--cyan { background: var(--cyan); color: #04121A; border-color: var(--space); }
.btn--amber { background: var(--ember); color: #1A0B02; border-color: var(--space); }

.btn--sm { padding: 9px 16px; font-size: 13px; }

/* ---------- 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: clamp(18px, 3vw, 28px) 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--txt-dim);
}

.crumbs a {
  color: var(--txt-dim);
  transition: color 0.18s var(--ease);
}

.crumbs a:hover { color: var(--cyan); }

.crumbs__sep { color: var(--nebula); }

.crumbs [aria-current="page"] { color: var(--cyan); }

/* ---------- 章节引导 ---------- */
.chapter {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: clamp(40px, 6vw, 76px) 0 clamp(20px, 3vw, 34px);
}

.chapter__no {
  flex: none;
  padding: 4px 10px;
  border: 2px solid var(--line-2);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.chapter__rule {
  flex: 1 1 auto;
  height: 2px;
  background: linear-gradient(90deg, var(--nebula), rgba(107, 78, 255, 0));
}

.chapter__title {
  flex: none;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 2.4vw, 30px);
  letter-spacing: -0.01em;
}

/* ---------- 斜切色带 ---------- */
.band {
  position: relative;
  margin: clamp(32px, 5vw, 64px) 0;
  padding: clamp(22px, 3vw, 36px) clamp(20px, 3.4vw, 40px);
  transform: skewY(-3.5deg);
  background: linear-gradient(100deg, rgba(107, 78, 255, 0.22), rgba(0, 229, 255, 0.07) 62%, transparent);
  border-top: 2px solid var(--line-2);
  border-bottom: 2px solid var(--line-2);
}

.band > * { transform: skewY(3.5deg); }

/* ---------- 卡片 ---------- */
.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 30px);
  background: var(--surf);
  border: 2px solid var(--line-2);
  box-shadow: var(--shadow-hard);
}

.card--paper {
  background: var(--paper-solid);
  color: #0B0F1A;
  border-color: #0B0F1A;
}

.card--paper h1,
.card--paper h2,
.card--paper h3,
.card--paper h4 { color: #0B0F1A; }

.card--paper p { color: #2A2F3D; }

.card--orbit { overflow: hidden; }

.card--orbit::after {
  content: "";
  position: absolute;
  right: -90px;
  bottom: -110px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  border: 2px dashed rgba(0, 229, 255, 0.22);
  transform: rotate(-3.5deg);
  pointer-events: none;
}

/* ---------- 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 2px solid var(--line-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--txt-dim);
}

.tag--live { border-color: var(--ember); color: var(--ember); }

.tag--live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ember);
  animation: live-pulse 1.7s ease-in-out infinite;
}

@keyframes live-pulse { 50% { opacity: 0.2; } }

/* ---------- 数字与注释 ---------- */
.num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  line-height: 1;
  color: var(--data);
  letter-spacing: -0.02em;
}

.num--xl { font-size: clamp(48px, 7vw, 96px); }
.num--lg { font-size: clamp(32px, 4.4vw, 56px); }
.num--sm { font-size: clamp(20px, 2.2vw, 28px); }

.annot {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--txt-dim);
}

.annot--v {
  writing-mode: vertical-rl;
  letter-spacing: 0.26em;
}

/* ---------- 长文容器 ---------- */
.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--txt-dim);
}

.prose > * + * { margin-top: 1.05em; }

.prose h2,
.prose h3 { color: var(--txt); margin-top: 1.6em; }

.prose a {
  color: var(--accent-text);
  border-bottom: 1px solid currentColor;
}

.prose ul,
.prose ol { padding-left: 1.4em; }

.prose ul li { list-style: square; }
.prose ol li { list-style: decimal; }
.prose li + li { margin-top: 0.4em; }

.prose strong { color: var(--txt); }

/* ---------- 图片占位容器 ---------- */
.frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--surf);
  border: 2px solid var(--line-2);
  box-shadow: var(--shadow-hard);
}

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

.frame > .frame__ph {
  min-height: 100%;
  background:
    radial-gradient(80% 60% at 30% 20%, rgba(107, 78, 255, 0.34), transparent 70%),
    radial-gradient(60% 50% at 80% 80%, rgba(0, 229, 255, 0.22), transparent 72%),
    var(--surf-2);
}

.frame--wide { aspect-ratio: 16 / 9; }
.frame--tall { aspect-ratio: 3 / 4; }
.frame--square { aspect-ratio: 1 / 1; }

.frame--orbit::after {
  content: "";
  position: absolute;
  right: -22%;
  bottom: -40%;
  width: 72%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 2px dashed rgba(0, 229, 255, 0.28);
  pointer-events: none;
}

.frame__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 82%;
  padding: 8px 14px;
  background: var(--space);
  color: var(--paper-solid);
  border-top: 2px solid var(--nebula);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
}

/* ---------- 滚动进度 ---------- */
.scroll-progress {
  position: fixed;
  left: 0;
  right: 0;
  top: var(--ticker);
  z-index: 85;
  height: 3px;
  background: rgba(107, 78, 255, 0.18);
  pointer-events: none;
}

.scroll-progress__fill {
  display: block;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--nebula), var(--cyan) 68%, var(--ember));
  transition: transform 0.14s linear;
}

/* ---------- 显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s var(--ease), transform 0.6s var(--ease);
  transition-delay: calc(var(--i, 0) * 60ms);
}

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

/* =========================================================
   响应式
   ========================================================= */
@media (max-width: 1024px) {
  .footer-inner { grid-template-columns: minmax(0, 1fr); }
  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  :root { --ticker: 36px; --rail: 0px; }

  .score-ticker__flag { padding: 0 10px; font-size: 10px; letter-spacing: 0.14em; }
  .ticker-item { padding: 0 12px; gap: 8px; font-size: 12px; }
  .ticker-item__lg { display: none; }
  .ticker-item__score { font-size: 14px; }
  .ticker-pause { width: calc(var(--ticker) - 8px); }

  .site-rail {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 90;
    width: 100%;
    align-items: stretch;
    gap: 22px;
    padding: calc(var(--ticker) + 26px) 22px 34px;
    background: var(--bg-deep);
    border-right: 0;
    border-bottom: 0;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(14px);
    transition: opacity 0.22s var(--ease), transform 0.26s var(--ease), visibility 0.26s linear;
  }

  .site-header[data-open="true"] .site-rail {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }

  .nav-toggle { display: flex; }

  .brand {
    flex-direction: row;
    align-items: center;
    gap: 14px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--line-2);
  }

  .brand__text { flex-direction: row; align-items: baseline; gap: 12px; }
  .brand__name { writing-mode: horizontal-tb; font-size: 20px; letter-spacing: 0.18em; }
  .brand__sub { writing-mode: horizontal-tb; font-size: 10px; }

  .rail-nav { width: 100%; flex: 0 0 auto; }
  .rail-nav__list { align-items: stretch; gap: 8px; }

  .rail-link {
    width: 100%;
    justify-content: flex-start;
    gap: 16px;
    padding: 14px 18px;
    border: 2px solid var(--line);
    font-size: 17px;
  }

  .rail-link__idx { color: var(--cyan); font-size: 13px; }

  .rail-link__label {
    position: static;
    opacity: 1;
    transform: none;
    padding: 0;
    background: none;
    border: 0;
    box-shadow: none;
    color: inherit;
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 800;
    letter-spacing: 0.04em;
    pointer-events: auto;
  }

  .rail-link:hover,
  .rail-link:focus-visible {
    background: rgba(107, 78, 255, 0.18);
    border-color: var(--nebula);
  }

  .rail-link:hover .rail-link__label,
  .rail-link:focus-visible .rail-link__label { transform: none; }

  .rail-link[aria-current="page"]::before {
    left: 0;
    top: 50%;
    width: 4px;
    height: 60%;
  }

  .rail-tools {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    width: 100%;
    margin-top: auto;
    padding-top: 18px;
  }

  .tool-btn { flex-direction: row; gap: 8px; width: auto; padding: 10px 16px; }
  .tool-btn__label { font-size: 12px; }

  .rail-cta {
    writing-mode: horizontal-tb;
    width: auto;
    padding: 12px 20px;
    font-size: 13px;
    letter-spacing: 0.12em;
    box-shadow: 5px 5px 0 0 rgba(5, 7, 13, 0.85);
  }

  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

  .band { transform: skewY(-2deg); }
  .band > * { transform: skewY(2deg); }
}

@media (max-width: 560px) {
  :root { --ticker: 36px; }

  body { font-size: 16px; }

  .grid-12 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-nav { grid-template-columns: minmax(0, 1fr); }

  .footer-base {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .chapter { flex-wrap: wrap; gap: 10px; }
  .chapter__rule { min-width: 40px; }

  .brand__mark--lg { width: 38px; height: 38px; }
}

@media (min-width: 901px) and (max-height: 780px) {
  .site-rail { gap: 10px; padding: 12px 0 14px; }
  .brand__name { font-size: 13px; }
  .brand__sub { display: none; }
  .rail-nav__list { gap: 2px; }
  .rail-link { padding: 6px 0; }
  .rail-tools { gap: 6px; padding-top: 10px; }
  .rail-cta { padding: 10px 6px; font-size: 11px; letter-spacing: 0.14em; }
  .tool-btn { padding: 6px 0; }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.12s !important;
  }

  .score-ticker__viewport { overflow-x: auto; }
  .score-ticker__track { animation: none; }
  .nav-toggle__ring { animation: none; }
  .tag--live::before { animation: none; }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: opacity 0.12s linear;
    transition-delay: 0ms;
  }

  .scroll-progress__fill { transition: none; }
}