/* ============================================================
   平博赛场 / site.css
   战术板体系：深墨绿基底 · 1px 精密网格 · 锐利直角 · 等宽数字
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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

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

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

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

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

[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #0A1C14;
  --turf: #1B442E;
  --tactical: #2E6443;
  --volt: #C9FF4A;
  --amber: #FF7A33;
  --chalk: #F3F6EF;
  --carbon: #111512;
  --sage: #8CA294;
  --paper: #E7EDE2;
  --line: #22352A;

  --font-display: 'Barlow Condensed', 'Oswald', 'Noto Sans SC', 'Source Han Sans SC', system-ui, sans-serif;
  --font-num: 'IBM Plex Mono', 'JetBrains Mono', 'Roboto Mono', ui-monospace, monospace;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', system-ui, -apple-system, 'Segoe UI', sans-serif;

  --wrap: 1264px;
  --gutter: clamp(16px, 3.2vw, 40px);
  --rule: 1px solid var(--line);
  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background-color: var(--ink);
  color: var(--chalk);
  font-family: var(--font-body);
  font-size: clamp(16px, 1.05vw, 17px);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: .01em;
  min-height: 100vh;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1, .h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -.01em;
}

h2, .h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  line-height: 1.14;
  letter-spacing: 0;
}

h3, .h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  line-height: 1.3;
}

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

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

/* ---------- 4. 布局容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 28px);
}

.prose { max-width: 68ch; }
.prose p { margin-bottom: 1.1em; }
.prose p:last-child { margin-bottom: 0; }

.surface-paper {
  background: var(--paper);
  color: var(--carbon);
}
.surface-paper .tag {
  border-color: rgba(17, 21, 18, .26);
  color: rgba(17, 21, 18, .72);
}
.surface-paper .eyebrow { color: rgba(17, 21, 18, .55); }

.surface-turf {
  background: var(--turf);
  color: var(--chalk);
}

.hairline {
  border: 0;
  border-top: var(--rule);
  margin-block: clamp(24px, 4vw, 48px);
}

/* ---------- 5. 通用组件 ---------- */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--sage);
  line-height: 1.6;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--tactical);
  padding: 4px 9px;
  font-size: 11px;
  letter-spacing: .12em;
  line-height: 1.4;
  color: var(--sage);
  white-space: nowrap;
}

.tag--volt { border-color: var(--volt); color: var(--volt); }
.tag--amber { border-color: var(--amber); color: var(--amber); }
.tag--solid {
  background: var(--volt);
  border-color: var(--volt);
  color: var(--ink);
  font-weight: 700;
}

.num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

.section-head {
  display: grid;
  gap: 10px;
  padding-bottom: 16px;
  border-bottom: var(--rule);
  margin-bottom: clamp(24px, 3vw, 36px);
}

.section-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1;
  color: var(--tactical);
}

.card {
  position: relative;
  background: var(--turf);
  border: 1px solid var(--line);
  padding: clamp(18px, 2.4vw, 28px);
  border-radius: 0;
}

.card-label {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: var(--rule);
  margin-bottom: 16px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--sage);
}

.countdown {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
  transition: color .2s var(--ease);
}
.countdown[data-state="urgent"] { color: var(--amber); }
.countdown[data-state="live"] { color: var(--volt); }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 0;
  padding: 11px 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  line-height: 1.25;
  text-align: center;
  transition: background-color .2s var(--ease), color .2s var(--ease),
              border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.btn-sm { padding: 7px 14px; font-size: 12px; }

.btn-volt {
  background: var(--volt);
  border-color: var(--volt);
  color: var(--ink);
}
.btn-volt:hover,
.btn-volt:focus-visible {
  background: transparent;
  color: var(--volt);
  box-shadow: inset 0 0 0 1px var(--volt);
}

.btn-ghost {
  border-color: var(--tactical);
  color: var(--chalk);
}
.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--volt);
  color: var(--volt);
}

.btn-amber {
  border-color: var(--amber);
  color: var(--amber);
}
.btn-amber:hover,
.btn-amber:focus-visible {
  background: var(--amber);
  color: var(--ink);
}

/* 面包屑 */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(16px, 2vw, 24px);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--sage);
}
.breadcrumbs li { display: flex; align-items: center; gap: 8px; }
.breadcrumbs li + li::before {
  content: "/";
  color: var(--tactical);
}
.breadcrumbs [aria-current="page"] { color: var(--chalk); }

/* 图片容器 */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, var(--turf), var(--ink));
  aspect-ratio: 16 / 9;
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.92) contrast(1.04);
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(10, 28, 20, 0) 46%, rgba(10, 28, 20, .74));
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-tag {
  position: absolute;
  z-index: 2;
  left: 12px;
  bottom: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--chalk);
  background: rgba(10, 28, 20, .72);
  border: 1px solid rgba(201, 255, 74, .38);
}

/* 章节目录（页面阶段使用） */
.toc {
  border-left: 1px solid var(--line);
  display: grid;
  gap: 2px;
}

.toc-link {
  position: relative;
  display: block;
  padding: 8px 0 8px 14px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--sage);
  transition: color .2s var(--ease);
}
.toc-link:hover { color: var(--chalk); }
.toc-link[aria-current="true"] {
  color: var(--chalk);
}
.toc-link[aria-current="true"]::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--volt);
}

/* 滚动进度 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--volt);
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
  z-index: 120;
}

/* ---------- 6. Skip link ---------- */
.skip-link {
  position: absolute;
  top: -96px;
  left: 16px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--volt);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  transition: top .2s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible { top: 12px; }

/* ---------- 7. 页头 ---------- */
.site-header {
  position: relative;
  z-index: 80;
  background: var(--ink);
  color: var(--chalk);
  border-bottom: 1px solid var(--line);
}

/* 7.1 状态轨 */
.header-rail {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(46, 100, 67, .34), rgba(10, 28, 20, 0) 62%);
}

.rail-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 46px;
  padding-block: 7px;
}

.rail-note {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--sage);
  min-width: 0;
}

.rail-dot {
  flex: none;
  width: 6px;
  height: 6px;
  background: var(--volt);
  box-shadow: 0 0 0 3px rgba(201, 255, 74, .16);
}

.rail-utils {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none;
}

.rail-fav {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--tactical);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--chalk);
  transition: border-color .2s var(--ease), color .2s var(--ease);
}
.rail-fav:hover,
.rail-fav:focus-visible {
  border-color: var(--volt);
  color: var(--volt);
}

.rail-count {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  color: var(--volt);
}

/* 7.2 刊头 */
.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  gap: 16px;
  padding-block: clamp(20px, 3vw, 34px) clamp(14px, 2vw, 20px);
  border-bottom: 1px solid var(--line);
  background-image: repeating-linear-gradient(90deg, rgba(46, 100, 67, .16) 0 1px, transparent 1px 88px);
}

.masthead-brand {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.2rem, 5.6vw, 4rem);
  line-height: .95;
  letter-spacing: .04em;
  text-align: center;
  color: var(--chalk);
  transition: color .2s var(--ease);
}
.masthead-brand:hover,
.masthead-brand:focus-visible { color: var(--volt); }

.masthead-side {
  padding-bottom: 8px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--sage);
}
.masthead-side--end { text-align: right; }

/* 7.3 导航条 */
.nav-bar {
  position: relative;
  border-bottom: 1px solid var(--line);
  background: var(--ink);
}

.nav-bar-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 60px;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--tactical);
  color: var(--chalk);
  font-size: 12px;
  letter-spacing: .14em;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}
.nav-toggle:hover { border-color: var(--volt); color: var(--volt); }

.nav-toggle-bars {
  display: inline-grid;
  gap: 4px;
  width: 18px;
}
.nav-toggle-bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:first-child {
  transform: translateY(3px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

.nav-toggle-label { white-space: nowrap; }

.site-nav { grid-column: 2; }

.nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(14px, 2.4vw, 34px);
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 20px 2px;
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--sage);
  transition: color .2s var(--ease);
}
.nav-link:hover { color: var(--chalk); }
.nav-link[aria-current="page"] { color: var(--chalk); }
.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 14px;
  height: 2px;
  background: var(--volt);
}

.nav-bar-meta {
  grid-column: 3;
  justify-self: end;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--sage);
  white-space: nowrap;
}

/* 7.4 联赛条 */
.league-bar {
  border-bottom: 1px solid var(--line);
  background-color: var(--ink);
  background-image: repeating-linear-gradient(90deg, rgba(46, 100, 67, .18) 0 1px, transparent 1px 64px);
}

.league-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-block: 10px;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--tactical) transparent;
}
.league-inner::-webkit-scrollbar { height: 4px; }
.league-inner::-webkit-scrollbar-thumb { background: var(--tactical); }

.league-legend {
  flex: none;
  padding-right: 12px;
  margin-right: 4px;
  border-right: 1px solid var(--line);
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--sage);
}

.league-chip {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  color: var(--sage);
  font-size: 12px;
  letter-spacing: .08em;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease),
              background-color .2s var(--ease);
}
.league-chip:hover {
  color: var(--chalk);
  border-color: var(--tactical);
}
.league-chip[aria-pressed="true"] {
  background: var(--volt);
  border-color: var(--volt);
  color: var(--ink);
  font-weight: 700;
}

.league-chip-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 10px;
  opacity: .72;
}

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 9vw, 120px);
  border-top: 1px solid var(--tactical);
  background-color: var(--ink);
  background-image: repeating-linear-gradient(90deg, rgba(46, 100, 67, .14) 0 1px, transparent 1px 96px);
  color: var(--chalk);
}

.site-footer > .wrap {
  padding-block: clamp(36px, 5vw, 64px) clamp(22px, 3vw, 34px);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(200px, 1fr) 2.4fr;
  gap: clamp(24px, 4vw, 56px);
}

.footer-brand-block { align-self: start; }

.footer-mast {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1;
  letter-spacing: .04em;
  color: var(--chalk);
  transition: color .2s var(--ease);
}
.footer-mast:hover,
.footer-mast:focus-visible { color: var(--volt); }

.footer-meta {
  margin-top: 10px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--sage);
}

.footer-tag {
  margin-top: 16px;
  max-width: 26ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--sage);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 32px);
}

.footer-col-title {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--chalk);
}
.footer-col-title::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  background: var(--volt);
}

.footer-list {
  display: grid;
  gap: 8px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--sage);
}

.footer-list a {
  color: var(--sage);
  text-decoration: underline;
  text-decoration-color: rgba(140, 162, 148, .35);
  text-underline-offset: 4px;
  transition: color .2s var(--ease), text-decoration-color .2s var(--ease);
}
.footer-list a:hover,
.footer-list a:focus-visible {
  color: var(--chalk);
  text-decoration-color: var(--volt);
}

.footer-list--plain li { color: var(--sage); }

.footer-mono {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--sage);
}

.footer-note {
  margin-top: clamp(32px, 4vw, 48px);
  padding-top: 18px;
  border-top: 1px solid var(--line);
  max-width: 82ch;
  font-size: 12px;
  line-height: 1.8;
  color: var(--sage);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.footer-legal {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--sage);
}
.footer-legal--muted { color: rgba(140, 162, 148, .72); }

/* 返回顶部 */
.to-top {
  position: fixed;
  right: clamp(14px, 2vw, 28px);
  bottom: clamp(14px, 2vw, 28px);
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--tactical);
  background: var(--turf);
  color: var(--chalk);
  font-size: 12px;
  letter-spacing: .14em;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .24s var(--ease), transform .24s var(--ease),
              visibility .24s var(--ease), background-color .2s var(--ease),
              border-color .2s var(--ease), color .2s var(--ease);
}
.to-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.to-top:hover,
.to-top:focus-visible {
  background: var(--volt);
  border-color: var(--volt);
  color: var(--ink);
}

/* ---------- 9. 平板 ---------- */
@media (max-width: 1024px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: clamp(28px, 4vw, 40px);
  }
  .footer-tag { max-width: 40ch; }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 10. 移动导航 ---------- */
@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }

  .nav-bar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-height: 56px;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    grid-column: auto;
    background: var(--ink);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 28px 44px rgba(0, 0, 0, .5);
    z-index: 70;
  }
  .site-nav[data-open] { display: block; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: 4px;
  }

  .nav-link {
    display: block;
    padding: 14px var(--gutter);
    border-bottom: 1px solid rgba(34, 53, 42, .78);
    font-size: 15px;
    letter-spacing: .12em;
  }
  .nav-link[aria-current="page"]::after {
    left: var(--gutter);
    right: auto;
    bottom: 10px;
    width: 22px;
  }

  .nav-bar-meta {
    grid-column: auto;
    justify-self: auto;
    font-size: 10px;
  }
}

/* ---------- 11. 手机 ---------- */
@media (max-width: 767px) {
  body { padding-bottom: 58px; }

  .rail-note { display: none; }
  .rail-inner { justify-content: space-between; }

  .masthead {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    padding-block: 22px 18px;
    background-image: none;
  }
  .masthead-side { display: none; }

  .nav-bar-meta { display: none; }

  /* 联赛条固定在屏幕底部 */
  .league-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 95;
    border-top: 1px solid var(--line);
    border-bottom: 0;
    box-shadow: 0 -12px 28px rgba(0, 0, 0, .45);
  }
  .league-inner { padding-block: 9px; }
  .league-legend { display: none; }

  .to-top {
    bottom: calc(58px + 14px);
    padding: 9px 14px;
  }

  .footer-cols { grid-template-columns: 1fr; }
  .footer-note { font-size: 11.5px; }
  .footer-base { flex-direction: column; align-items: flex-start; gap: 6px; }
}

@media (max-width: 600px) {
  .grid-12 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
  .section-num { font-size: 2rem; }
}

/* ---------- 12. 降低动态 ---------- */
@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;
  }

  .to-top { transform: none; }
  .scroll-progress { display: none; }
}