/* =========================================================
   球盟会赛场 · 共享样式表 /assets/site.css
   深海蓝赛场面板 + 奶油纸信息岛 + 荧光青数据线
   ========================================================= */

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body, h1, h2, h3, h4, p, ul, ol, figure, blockquote, hr { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }

/* ---------- tokens ---------- */
:root {
  --sea: #041428;
  --sea-deep: #02090F;
  --panel: #0A2647;
  --panel-2: #07203C;
  --line: #134A7B;
  --cream: #F3E9D2;
  --ink: #221813;
  --cyan: #00E5D0;
  --orange: #FF5A36;
  --amber: #FFC24B;
  --mist: #7FA6C9;
  --white: #F8FBFF;

  --rail-w: 248px;
  --gap: clamp(16px, 2vw, 24px);
  --pad: clamp(20px, 4vw, 44px);
  --shadow: 6px 6px 0 rgba(0, 0, 0, .38);
  --shadow-soft: 6px 6px 0 rgba(0, 0, 0, .22);

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", "Courier New", monospace;
}

/* ---------- base ---------- */
body {
  background: var(--sea);
  color: var(--cream);
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(58% 42% at 78% 4%, rgba(0, 229, 208, .13), transparent 70%),
    radial-gradient(46% 38% at 6% 84%, rgba(255, 90, 54, .10), transparent 72%),
    linear-gradient(180deg, #041428 0%, #061B36 45%, #041428 100%);
}
h1, h2, h3, h4 { color: var(--white); font-weight: 500; line-height: 1.16; letter-spacing: .01em; }
h1 { font-size: clamp(38px, 5.6vw, 84px); font-weight: 300; line-height: 1.05; letter-spacing: -.01em; }
h2 { font-size: clamp(26px, 3.2vw, 42px); }
h3 { font-size: clamp(19px, 1.9vw, 26px); }
h4 { font-size: 17px; letter-spacing: .04em; }
p { margin: 0 0 1em; }
strong { color: var(--white); font-weight: 600; }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 2px; }

/* ---------- skip link ---------- */
.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 400;
  background: var(--cyan);
  color: var(--sea);
  padding: 12px 18px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .1em;
  box-shadow: var(--shadow);
  transition: top .2s ease;
}
.skip-link:focus { top: 16px; }

/* ---------- 布局容器 ---------- */
.wrap {
  width: min(1280px, 100%);
  margin-inline: auto;
  padding-inline: var(--pad);
}
#main-content { position: relative; z-index: 1; display: block; }

.section { position: relative; padding-block: clamp(48px, 7vw, 96px); }
.section--tight { padding-block: clamp(30px, 4vw, 56px); }
.section--panel { background: linear-gradient(180deg, rgba(10, 38, 71, .85), rgba(4, 20, 40, 0)); }
.section--rule { border-top: 2px solid var(--line); }
.section--cream { background: var(--cream); color: var(--ink); }
.section--cream h1, .section--cream h2, .section--cream h3, .section--cream h4 { color: var(--ink); }
.section--cream p { color: #3B2C24; }
.section--cream .lede { color: #4A3A32; }
.section--cream .label, .section--cream .card__num { color: #B0331A; }

.rule-cyan { height: 2px; border: 0; background: linear-gradient(90deg, var(--cyan), rgba(0, 229, 208, 0)); }

/* ---------- 网格 ---------- */
.grid { display: grid; gap: var(--gap); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.stack { display: grid; gap: var(--gap); }
.split { display: grid; gap: clamp(24px, 3vw, 48px); }
@media (min-width: 900px) {
  .split { grid-template-columns: minmax(200px, 1fr) minmax(0, 2.2fr); }
  .split--even { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 文字与标签 ---------- */
.label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--mist);
  margin-bottom: 12px;
}
.label--cyan { color: var(--cyan); }
.label--amber { color: var(--amber); }
.lede { font-size: clamp(17px, 1.5vw, 20px); color: #CFE0EE; max-width: 66ch; }
.note { font-size: 13px; color: var(--mist); line-height: 1.7; }
.stat {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(38px, 4.6vw, 72px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan);
}
.stat--orange { color: var(--orange); }
.stat--amber { color: var(--amber); }
.stat--white { color: var(--white); }
.section--cream .stat { color: #B0331A; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 11px;
  border: 1px solid var(--line);
  background: rgba(19, 74, 123, .18);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--mist);
}
.chip--live { border-color: rgba(0, 229, 208, .55); color: var(--cyan); }
.chip--hot { border-color: rgba(255, 90, 54, .55); color: var(--orange); }
.chip--warn { border-color: rgba(255, 194, 75, .55); color: var(--amber); }
.dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 229, 208, .18);
  flex: none;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 22px;
  border: 2px solid var(--cyan);
  background: transparent;
  color: var(--cyan);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .1em;
  line-height: 1.2;
  cursor: pointer;
  transition: background-color .22s ease, color .22s ease, transform .22s ease, border-color .22s ease;
}
.btn:hover { background: var(--cyan); color: var(--sea); }
.btn:active { transform: translate(2px, 2px); }
.btn--primary {
  background: var(--orange);
  border-color: var(--orange);
  color: #1B0A04;
  box-shadow: 6px 6px 0 rgba(0, 0, 0, .35);
}
.btn--primary:hover { background: var(--amber); border-color: var(--amber); color: var(--ink); }
.btn--ghost { border-color: var(--line); color: var(--cream); }
.btn--ghost:hover { background: var(--line); color: var(--white); }
.btn--block { width: 100%; }

/* ---------- 面板与卡片 ---------- */
.panel {
  position: relative;
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 2px solid var(--line);
  box-shadow: var(--shadow);
  padding: clamp(18px, 2vw, 26px);
}
.panel--cream {
  background: var(--cream);
  color: var(--ink);
  border-color: var(--ink);
  box-shadow: 6px 6px 0 rgba(34, 24, 19, .35);
}
.panel--cream h3, .panel--cream h4 { color: var(--ink); }
.card {
  position: relative;
  background: linear-gradient(180deg, rgba(10, 38, 71, .95), rgba(7, 32, 60, .95));
  border: 2px solid var(--line);
  box-shadow: var(--shadow);
  padding: clamp(18px, 2vw, 24px);
  transition: border-color .24s ease, transform .24s ease;
}
.card:hover { border-color: rgba(0, 229, 208, .6); transform: translate(-2px, -2px); }
.card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--amber);
  margin-bottom: 10px;
}
.card__title { font-size: 19px; color: var(--white); margin: 0 0 8px; letter-spacing: .02em; }
.card__meta { font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; color: var(--mist); }

/* ---------- 数据表 ---------- */
.data-table { font-family: var(--font-mono); font-size: 14px; }
.data-table th, .data-table td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; }
.data-table th { font-size: 11px; letter-spacing: .18em; text-transform: uppercase; color: var(--mist); font-weight: 500; }
.data-table td { color: var(--cream); }

/* ---------- 图片容器（页面阶段放置图片） ---------- */
.figure {
  margin: 0;
  border: 2px solid var(--line);
  background: var(--panel-2);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.figure__media {
  position: relative;
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  background-color: #06203A;
  background-image:
    linear-gradient(135deg, rgba(0, 229, 208, .18), transparent 55%),
    repeating-linear-gradient(90deg, rgba(127, 166, 201, .16) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(0deg, rgba(127, 166, 201, .12) 0 1px, transparent 1px 48px);
}
.figure__media img { width: 100%; height: 100%; object-fit: cover; }
.figure__media--wide { aspect-ratio: 21 / 9; }
.figure__media--tall { aspect-ratio: 4 / 5; }
.figure__slot {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .28em;
  color: rgba(127, 166, 201, .75);
}
.figure__caption {
  border-top: 2px solid var(--line);
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

/* ---------- 面包屑 / 正文 / 章节索引 ---------- */
.breadcrumbs { padding-top: 20px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; color: var(--mist); }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 8px; }
.breadcrumbs li + li::before { content: "/"; margin-right: 8px; color: var(--line); }
.breadcrumbs a { color: var(--mist); }
.breadcrumbs a:hover { color: var(--cyan); }
.breadcrumbs [aria-current="page"] { color: var(--white); }

.prose { max-width: 72ch; font-size: 17px; line-height: 1.75; }
.prose p { margin-bottom: 1.1em; }
.prose h2, .prose h3 { margin-top: 1.5em; margin-bottom: .5em; }
.prose ul { list-style: square; padding-left: 1.3em; margin-bottom: 1.1em; }
.prose li { margin-bottom: .45em; }
.prose a { color: var(--cyan); border-bottom: 1px solid rgba(0, 229, 208, .45); }
.prose a:hover { color: var(--amber); border-color: var(--amber); }
.section--cream .prose a { color: #B0331A; border-color: rgba(176, 51, 26, .5); }

.toc { display: grid; gap: 8px; }
.toc__link {
  display: block;
  padding: 8px 0 8px 14px;
  border-left: 2px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--mist);
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}
.toc__link:hover { color: var(--cyan); border-left-color: var(--cyan); }
.toc__link[aria-current="true"] {
  color: var(--white);
  border-left-color: var(--orange);
  background: linear-gradient(90deg, rgba(255, 90, 54, .16), transparent);
}

/* ---------- 动效基元 ---------- */
[data-reveal] { opacity: 0; transform: translateY(8px); transition: opacity .35s ease, transform .35s ease; }
[data-reveal].is-visible { opacity: 1; transform: none; }

/* =========================================================
   页头
   ========================================================= */
.site-header { position: sticky; top: 0; z-index: 80; }

.hud { display: none; background: rgba(10, 38, 71, .92); border-bottom: 1px solid var(--line); }
.hud__inner {
  width: min(1600px, 100%);
  margin-inline: auto;
  min-height: 44px;
  padding-inline: var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  font-size: 12px;
}
.hud__brand { margin: 0; color: var(--mist); letter-spacing: .18em; }
.hud__meta { display: flex; align-items: center; gap: 20px; }
.hud__stat {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
}
.hud__stat--time { color: var(--cyan); }
.hud__account {
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .1em;
  border-bottom: 1px solid rgba(0, 229, 208, .45);
}
.hud__account:hover { color: var(--amber); border-color: var(--amber); }

.rail {
  background: linear-gradient(180deg, #0A2647, #061F3A);
  border-bottom: 2px solid var(--line);
}
.rail__head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 13px var(--pad); }

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand__mark {
  width: 40px; height: 40px; flex: none;
  display: grid; place-items: center;
  background: var(--cyan);
  color: #04121F;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  box-shadow: 4px 4px 0 rgba(255, 90, 54, .6);
}
.brand__body { display: grid; gap: 2px; }
.brand__name { font-size: 17px; font-weight: 600; letter-spacing: .06em; color: var(--white); }
.brand__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--mist);
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 2px solid var(--line);
  background: rgba(19, 74, 123, .2);
  color: var(--cream);
  font-size: 12px;
  letter-spacing: .2em;
}
.nav-toggle:hover { border-color: var(--cyan); color: var(--cyan); }
.nav-toggle__bars { position: relative; display: block; width: 16px; height: 10px; }
.nav-toggle__bars::before, .nav-toggle__bars::after {
  content: ""; position: absolute; left: 0; right: 0; height: 2px; background: var(--cyan);
  transition: transform .22s ease;
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-4px) rotate(-45deg); }

.site-nav { display: none; padding: 0 var(--pad) 22px; }
.site-nav[data-open="true"] { display: block; }
.site-nav__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 16px 0 10px;
}
.site-nav__list { display: grid; gap: 2px; }
.site-nav__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 2px solid transparent;
  border-left: 2px solid var(--line);
  color: var(--cream);
  font-size: 15px;
  letter-spacing: .06em;
  transition: color .2s ease, background-color .2s ease, border-color .2s ease;
}
.site-nav__link::before { content: ""; width: 6px; height: 6px; background: var(--line); flex: none; }
.site-nav__link:hover { color: var(--cyan); background: rgba(0, 229, 208, .07); border-left-color: var(--cyan); }
.site-nav__link:hover::before { background: var(--cyan); }
.site-nav__link[aria-current="page"] {
  color: #04121F;
  background: var(--cyan);
  border-left-color: var(--white);
  font-weight: 600;
}
.site-nav__link[aria-current="page"]::before { background: #04121F; }

.rail__foot { display: grid; gap: 12px; padding-top: 18px; }
.rail__note { margin: 0; font-size: 13px; line-height: 1.65; color: var(--mist); }
.rail__account {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
  border-bottom: 1px solid rgba(0, 229, 208, .4);
  justify-self: start;
}

.progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: 200;
  background: rgba(19, 74, 123, .35);
  pointer-events: none;
}
.progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
  box-shadow: 0 0 12px rgba(0, 229, 208, .6);
}

/* 平板：导航双列 */
@media (min-width: 640px) {
  .site-nav__list { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 16px; }
}

/* 桌面：上层信息条 + 左侧常驻竖排导航轨道 */
@media (min-width: 1080px) {
  body { padding-left: var(--rail-w); }
  .site-header { position: relative; }
  .hud { display: block; }
  .progress { left: var(--rail-w); }
  .skip-link:focus { left: calc(var(--rail-w) + 16px); }

  .rail {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    width: var(--rail-w);
    display: flex;
    flex-direction: column;
    padding: 22px 18px 20px;
    border-bottom: 0;
    border-right: 2px solid var(--line);
    overflow-y: auto;
  }
  .rail__head {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 0 18px;
    border-bottom: 2px solid var(--line);
  }
  .nav-toggle { display: none; }
  .site-nav { display: flex; flex-direction: column; flex: 1; padding: 18px 0 0; }
  .site-nav__list { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .site-nav__link { padding: 11px 12px; font-size: 14px; }
  .rail__foot { margin-top: auto; border-top: 2px solid var(--line); }
  .rail__account { display: none; }
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: clamp(48px, 6vw, 96px);
  background: linear-gradient(180deg, #04182E, var(--sea-deep));
  border-top: 2px solid var(--cyan);
}
.footer__inner {
  display: grid;
  gap: 40px;
  padding-block: clamp(40px, 5vw, 64px);
}
@media (min-width: 900px) {
  .footer__inner { grid-template-columns: minmax(240px, 1fr) minmax(0, 2.4fr); gap: 56px; }
}
.footer__brand { display: grid; gap: 18px; align-content: start; justify-items: start; }
.footer__tag { margin: 0; font-size: 15px; color: var(--mist); max-width: 34ch; }
.footer__meta {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist);
  word-break: break-word;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  width: 100%;
}
.footer__cols {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}
.footer__title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 14px;
}
.footer__list { display: grid; gap: 9px; }
.footer__list a {
  font-size: 14px;
  letter-spacing: .03em;
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}
.footer__list a:hover { color: var(--cyan); border-color: rgba(0, 229, 208, .5); }
.footer__list--plain li { font-size: 13px; color: var(--mist); line-height: 1.7; word-break: break-word; }
.footer__list--plain a { color: var(--cyan); }

.footer__legal { background: var(--cream); color: var(--ink); border-top: 2px solid var(--ink); }
.footer__legal-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  padding-block: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: #4A3A32;
}
.footer__legal-list { display: flex; flex-wrap: wrap; gap: 20px; }
.footer__legal-list a { color: var(--ink); border-bottom: 1px solid rgba(34, 24, 19, .35); }
.footer__legal-list a:hover { color: #B0331A; border-color: #B0331A; }
.footer__icp, .footer__copy { margin: 0; }

/* ---------- 无动画偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .progress__bar { transition: none; }
}