/* ============================================================
   球盟会主站 — 共享 Site Kit  /assets/site.css
   策展画册 × 夜场记分牌：浅色展墙 + 单段深色记分牌
   ============================================================ */

:root {
  --color-surface: #fbfbfb;
  --color-surface-alt: #f2f2f3;
  --color-surface-deep: #e6e5e7;
  --color-ink: #4b4752;
  --color-ink-soft: #716c79;
  --color-ink-muted: #7e7a85;
  --color-line: #dbdbdd;
  --color-primary: #7a7288;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #e9e8eb;
  --color-accent: #6615ea;
  --color-accent-ink: #ffffff;
  --color-highlight: #e0d2f8;
  --color-focus: #6208f7;
  --color-contrast-surface: #232125;
  --color-contrast-ink: #e5e4e7;
  --color-contrast-line: #4e4c50;
  --color-contrast-accent: #a06ef2;
  --overlay-scrim: linear-gradient(180deg, rgba(35, 33, 37, 0.35) 0%, rgba(35, 33, 37, 0.72) 55%, rgba(35, 33, 37, 0.92) 100%);
  --font-heading: STZhongsong, "Source Han Serif SC", "Songti SC", SimSun, serif;
  --font-body: "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, Menlo, Consolas, monospace;
  --text-xs: 10.1px;
  --text-sm: 14.3px;
  --text-base: 17px;
  --text-lg: 24.0px;
  --text-xl: 34.0px;
  --text-2xl: 48.1px;
  --text-3xl: 68.0px;
  --text-4xl: 96.1px;
  --text-display: clamp(38px, 7.7vw, 99px);
  --text-figure: clamp(31px, 5.5vw, 71px);
  --weight-heading: 402;
  --weight-body: 400;
  --leading-body: 1.78;
  --leading-heading: 1.28;
  --tracking-heading: 0.001em;
  --radius-sm: 0px;
  --radius-md: 0px;
  --radius-lg: 0px;
  --radius-pill: 0px;
  --border-thin: 1px;
  --border-thick: 1px;
  --shadow-1: none;
  --shadow-2: none;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1240px;
  --measure: 60ch;
  --gutter: 32px;
  --section-y: 122px;
  --section-y-lg: 171px;
}

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-body);
  line-height: var(--leading-body);
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd { margin: 0; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
hr { border: 0; }
table { border-collapse: collapse; width: 100%; }
::selection { background: var(--color-highlight); color: var(--color-ink); }

/* ---------- 2. 基础排版（细字重超大标题 + 小号展签） ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}
h1 { font-size: var(--text-2xl); }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); }
h4 { font-size: var(--text-base); }
p { max-width: var(--measure); }
strong { font-weight: 600; }
small { font-size: var(--text-xs); }

.t-display {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: 1.04;
  letter-spacing: -0.015em;
  color: var(--color-ink);
}
.t-figure {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 0.94;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}
.t-xl { font-family: var(--font-heading); font-weight: var(--weight-heading); font-size: var(--text-xl); line-height: var(--leading-heading); }
.t-lg { font-family: var(--font-heading); font-weight: var(--weight-heading); font-size: var(--text-lg); line-height: var(--leading-heading); }
.t-lead { font-size: var(--text-lg); line-height: 1.6; color: var(--color-ink-soft); max-width: var(--measure); }
.t-sm { font-size: var(--text-sm); line-height: 1.7; }
.t-xs { font-size: var(--text-xs); line-height: 1.7; }

.eyebrow {
  font-size: var(--text-xs);
  letter-spacing: 0.26em;
  color: var(--color-ink-muted);
  text-transform: uppercase;
}
.stamp {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
  font-variant-numeric: tabular-nums;
}
.score {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  color: var(--color-ink);
}
.score--live { color: var(--color-accent); }

.narrow { max-width: var(--measure); }
.note { max-width: 28ch; font-size: var(--text-sm); color: var(--color-ink-muted); line-height: 1.7; }

/* ---------- 3. 容器与栅格 ---------- */
main { display: block; }
[id="main-content"] { scroll-margin-top: var(--space-8); }
[id="main-content"]:focus { outline: none; }

.wrap {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}
.grid--tight { gap: var(--space-3); }
.stack > * + * { margin-top: var(--space-3); }
.stack-lg > * + * { margin-top: var(--space-6); }
.row { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: baseline; }
.stagger-up { margin-top: calc(var(--space-6) * -1); }
.bleed { margin-inline: calc(var(--gutter) * -1); }

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: var(--space-3); }
  .stagger-up { margin-top: 0; }
}
@media (min-width: 901px) {
  .span-3 { grid-column: span 3; }
  .span-4 { grid-column: span 4; }
  .span-5 { grid-column: span 5; }
  .span-6 { grid-column: span 6; }
  .span-7 { grid-column: span 7; }
  .span-8 { grid-column: span 8; }
  .span-12 { grid-column: span 12; }
  .push-2 { grid-column-start: 3; }
  .push-4 { grid-column-start: 5; }
  .push-6 { grid-column-start: 7; }
}

/* ---------- 4. 分区节奏 / 色彩分区 ---------- */
.band { padding-block: var(--section-y); }
.band--lg { padding-block: var(--section-y-lg); }
.band--sm { padding-block: var(--space-8); }
.band--alt { background: var(--color-surface-alt); }
.band--deep { background: var(--color-surface-deep); }
.band--night {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}
.band--night h1, .band--night h2, .band--night h3, .band--night .t-display { color: var(--color-contrast-ink); }
.band--night .t-lead, .band--night .note, .band--night p { color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent); }
.band--night .eyebrow, .band--night .stamp { color: color-mix(in srgb, var(--color-contrast-ink) 58%, transparent); }
.band--night .t-figure, .band--night .section-index { color: var(--color-contrast-accent); }
.band--night .score { color: var(--color-contrast-ink); }
.band--night .score--live { color: var(--color-contrast-accent); }
.band--night .hairline { background: var(--color-contrast-line); }

.hairline {
  height: var(--border-thin);
  background: var(--color-line);
  width: 100%;
  margin: 0;
}
.hairline--shift { margin-left: calc(var(--gutter) * 2); }
.hairline--short { width: clamp(120px, 24%, 320px); }

/* ---------- 5. 展签式组件 ---------- */
.section-head {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  max-width: 46ch;
}
.section-head--shift { padding-left: var(--space-8); max-width: 42ch; }
.section-index {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 0.9;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}
.section-title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}
.section-note {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  line-height: 1.7;
  max-width: 34ch;
}
@media (max-width: 900px) {
  .section-head--shift { padding-left: 0; }
}

/* 图片容器：去饱和叠色 + 展签说明 */
.media-frame { margin: 0; }
.media-frame__box {
  position: relative;
  overflow: hidden;
  background: var(--color-surface-deep);
  aspect-ratio: 4 / 3;
}
.media-frame__box--wide { aspect-ratio: 16 / 9; }
.media-frame__box--tall { aspect-ratio: 3 / 4; }
.media-frame__box--square { aspect-ratio: 1 / 1; }
.media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.06) brightness(0.96);
}
.media-frame__box::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--color-primary);
  mix-blend-mode: color;
  opacity: 0.6;
  pointer-events: none;
}
.media-frame__box--night::after {
  background: var(--color-contrast-surface);
  opacity: 0.52;
}
.scrim {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  padding: var(--space-4);
  background: var(--overlay-scrim);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  line-height: 1.7;
}
.plate {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-2);
  max-width: 34ch;
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-muted);
}
.plate__no {
  flex: none;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  color: var(--color-primary);
}
.band--night .plate { color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent); }
.band--night .plate__no { color: var(--color-contrast-accent); }

/* 标签与条目 */
.tag {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding-inline: var(--space-1);
  background: var(--color-primary-soft);
  color: var(--color-ink-soft);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
}
.tag--accent { background: var(--color-accent); color: var(--color-accent-ink); }
.tag--night {
  background: transparent;
  border: var(--border-thin) solid var(--color-contrast-line);
  color: var(--color-contrast-ink);
}
.entry {
  display: block;
  padding-block: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  transition: background-color 160ms linear, border-color 160ms linear;
}
.entry:hover { background: var(--color-surface-alt); }
.band--night .entry { border-top-color: var(--color-contrast-line); }
.band--night .entry:hover { background: color-mix(in srgb, var(--color-contrast-ink) 6%, transparent); }

/* 横向主题带：滚动吸附 */
.track {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding-bottom: var(--space-2);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}
.track > * {
  flex: 0 0 auto;
  width: min(78vw, 300px);
  scroll-snap-align: start;
}
.track--wide > * { width: min(84vw, 420px); }
.track::-webkit-scrollbar { height: 2px; }
.track::-webkit-scrollbar-thumb { background: var(--color-line); }

/* 面包屑 */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}
.crumbs li { display: inline-flex; align-items: center; gap: var(--space-1); }
.crumbs li + li::before { content: "/"; color: var(--color-line); }
.crumbs a:hover { color: var(--color-ink); }
.crumbs [aria-current="page"] { color: var(--color-ink-soft); }

/* 正文块 */
.prose { max-width: var(--measure); }
.prose p + p, .prose h2, .prose h3, .prose ul, .prose ol { margin-top: var(--space-3); }
.prose h2 { margin-top: var(--space-6); }
.prose ul, .prose ol { padding-left: 1.2em; list-style: disc; max-width: var(--measure); }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: var(--space-1); }

/* ---------- 6. 按钮：强调色只用于可执行动作 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-height: 44px;
  padding: 0 var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  color: var(--color-ink);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  box-shadow: var(--shadow-1);
  transition: background-color 160ms linear, color 160ms linear, border-color 160ms linear;
}
.btn:hover { background: var(--color-surface-deep); }
.btn--accent {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}
.btn--accent:hover { background: color-mix(in srgb, var(--color-accent) 82%, var(--color-contrast-surface)); }
.btn--quiet { background: transparent; color: var(--color-ink-soft); }
.btn--quiet:hover { background: var(--color-surface-alt); color: var(--color-ink); }
.btn--on-night {
  background: transparent;
  border-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}
.btn--on-night:hover { background: color-mix(in srgb, var(--color-contrast-ink) 10%, transparent); }
.btn--block { display: flex; width: 100%; }

/* ---------- 7. 头部：进度线 + 侧边轨道 + 移动抽屉 ---------- */
.site-header { position: relative; z-index: 60; }

.skip-link {
  position: fixed;
  left: var(--space-2);
  top: -80px;
  z-index: 90;
  padding: var(--space-2) var(--space-3);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  transition: top 140ms linear;
}
.skip-link:focus { top: var(--space-2); }

.read-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--border-thin);
  background: color-mix(in srgb, var(--color-line) 70%, transparent);
  z-index: 85;
  pointer-events: none;
}
.read-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
}

.brand { display: block; }
.brand__mark {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.3em;
  color: var(--color-primary);
}
.brand__name {
  display: block;
  margin-top: var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.24;
  color: var(--color-ink);
}
.brand__tag {
  display: block;
  margin-top: var(--space-2);
  max-width: 22ch;
  font-size: var(--text-xs);
  line-height: 1.8;
  letter-spacing: 0.03em;
  color: var(--color-ink-muted);
}

.rail {
  background: var(--color-surface);
  border-right: var(--border-thin) solid var(--color-line);
}
.rail__brand { padding: 0; }
.rail__utility { margin-top: auto; display: grid; gap: var(--space-2); }
.rail__note {
  max-width: 24ch;
  font-size: var(--text-xs);
  line-height: 1.8;
  color: var(--color-ink-muted);
}

.rail-nav__title {
  margin-bottom: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.26em;
  color: var(--color-ink-muted);
}
.rail-nav__list { display: grid; gap: 2px; }
.rail-nav__list a {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-2) var(--space-2) var(--space-3);
  border-left: var(--border-thin) solid transparent;
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-ink-soft);
  transition: color 160ms linear, background-color 160ms linear, border-color 160ms linear;
}
.rail-nav__list a::before {
  content: attr(data-index);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}
.rail-nav__list a:hover {
  background: var(--color-surface-alt);
  border-left-color: var(--color-primary);
  color: var(--color-ink);
}
.rail-nav__list a.is-active {
  border-left-color: var(--color-primary);
  color: var(--color-ink);
}
.rail-nav__list a[aria-current="page"] {
  background: var(--color-primary-soft);
  border-left-color: var(--color-primary);
  color: var(--color-ink);
}
.rail-nav__list a[aria-current="page"]::before { color: var(--color-primary); }

.topbar { display: none; }
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 40px;
  padding: 0 var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  color: var(--color-ink);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  transition: background-color 160ms linear;
}
.nav-toggle:hover { background: var(--color-surface-alt); }
.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: var(--border-thin);
  background: currentColor;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: var(--border-thin);
  background: currentColor;
  transition: transform 160ms linear, top 160ms linear;
}
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }
.site-header[data-open="true"] .nav-toggle__bars { background: transparent; }
.site-header[data-open="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.site-header[data-open="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

.site-header::after {
  content: "";
  position: fixed;
  inset: 64px 0 0 0;
  z-index: 45;
  background: var(--overlay-scrim);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms linear;
}
.site-header[data-open="true"]::after { opacity: 1; pointer-events: auto; }

@media (min-width: 1024px) {
  body { padding-left: 248px; }
  .site-header::after { display: none; }
  .rail {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 248px;
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    padding: var(--space-8) var(--space-3) var(--space-4);
    overflow-y: auto;
    z-index: 50;
  }
}

@media (max-width: 1023px) {
  body { padding-top: 64px; }
  .topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 60;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    height: 64px;
    padding-inline: var(--space-3);
    background: var(--color-surface);
    border-bottom: var(--border-thin) solid var(--color-line);
  }
  .brand--compact { display: flex; align-items: center; gap: var(--space-2); }
  .brand--compact .brand__mark { font-size: var(--text-xs); letter-spacing: 0.24em; }
  .brand--compact .brand__name { margin-top: 0; font-size: var(--text-sm); font-family: var(--font-heading); }
  .rail {
    position: fixed;
    top: 64px;
    left: 0;
    bottom: 0;
    z-index: 50;
    width: min(320px, 86vw);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    padding: var(--space-6) var(--space-3) var(--space-4);
    overflow-y: auto;
    transform: translateX(-102%);
    transition: transform 200ms ease-out;
  }
  .rail__brand { display: none; }
  .site-header[data-open="true"] .rail { transform: none; }
}

/* ---------- 8. 页脚：极简单行，直角无分隔线 ---------- */
.site-footer {
  background: var(--color-surface);
  color: var(--color-ink-muted);
  font-size: var(--text-xs);
  line-height: 1.8;
  padding-block: var(--space-6) var(--space-8);
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2) var(--space-4);
}
.site-footer__brand {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
}
.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
}
.site-footer__links a {
  color: var(--color-ink-muted);
  transition: color 160ms linear;
}
.site-footer__links a:hover { color: var(--color-ink); }
.site-footer__meta {
  max-width: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-2);
  color: var(--color-ink-muted);
}
.site-footer__dot { color: var(--color-line); }

/* ---------- 9. 状态与动效契约 ---------- */
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}
a:focus-visible, button:focus-visible, [tabindex]:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
  }
  .track { scroll-behavior: auto; scroll-snap-type: none; }
}