/* ==========================================================================
   半岛赛场 · 共享样式表 /assets/site.css
   夜间赛场控制台：深墨绿近单色 + 信号橙强调 + 锐利直角精密网格
   ========================================================================== */

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

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

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

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

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

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

button { font: inherit; color: inherit; }

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

/* ---------- 2. Tokens ---------- */
:root {
  --ink-900: #071A16;
  --ink-800: #0D2B24;
  --ink-700: #123B32;
  --steel: #AFC0CC;
  --steel-dim: #6F8796;
  --paper: #F1F7F4;
  --signal: #FF7A1A;
  --mint: #44F0CF;
  --alert: #FF4D4F;
  --brass: #C7B98A;

  --text: #D7E3DF;
  --line: rgba(175, 192, 204, 0.16);
  --line-strong: rgba(175, 192, 204, 0.32);

  --font-display: 'Source Han Sans SC', 'Noto Sans SC', 'PingFang SC', sans-serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', sans-serif;
  --font-mono: 'JetBrains Mono', 'Roboto Mono', 'SFMono-Regular', Consolas, monospace;

  --maxw: 1440px;
  --gutter: clamp(16px, 3.6vw, 40px);
  --gap: 24px;

  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

/* ---------- 3. 中文基础排版 ---------- */
html { font-size: 16px; }

body {
  min-height: 100vh;
  background-color: var(--ink-900);
  background-image:
    radial-gradient(1100px 520px at 50% -12%, rgba(18, 59, 50, 0.55), transparent 70%);
  background-repeat: no-repeat;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--paper);
}

h1 { font-size: clamp(34px, 5vw, 64px); line-height: 0.98; }
h2 { font-size: clamp(26px, 3.4vw, 36px); }
h3 { font-size: clamp(19px, 2.1vw, 24px); letter-spacing: -0.03em; }

p { text-wrap: pretty; }

.num,
[data-num] {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: -0.01em;
}

/* ---------- 4. 焦点与无障碍 ---------- */
:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -80px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--signal);
  color: var(--ink-900);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  transition: top 0.12s linear;
}

.skip-link:focus { top: 12px; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 5. 布局骨架 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.section { padding: clamp(40px, 6vw, 88px) 0; }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 24px;
  padding-bottom: 14px;
  margin-bottom: clamp(20px, 3vw, 36px);
  border-bottom: 1px solid var(--line-strong);
}

.eyebrow {
  font-family: var(--font-body);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--steel-dim);
}

.eyebrow--signal { color: var(--signal); }

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

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

.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-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--text);
}

.prose h2 { margin: 2em 0 0.6em; }
.prose h3 { margin: 1.6em 0 0.5em; }
.prose p { margin-bottom: 1.1em; }
.prose a {
  color: var(--signal);
  border-bottom: 1px solid rgba(255, 122, 26, 0.45);
}
.prose ul,
.prose ol {
  margin: 0 0 1.2em 1.2em;
  padding-left: 0.4em;
}
.prose li { margin-bottom: 0.45em; }

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 20px;
  border: 1px solid var(--signal);
  background: var(--signal);
  color: var(--ink-900);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.2;
  cursor: pointer;
  transition: background 0.12s linear, color 0.12s linear, border-color 0.12s linear;
}

.btn:hover,
.btn:focus-visible {
  background: transparent;
  color: var(--signal);
}

.btn--ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--paper);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
  background: transparent;
}

/* ---------- 7. 面板 / 标签 / 数字 ---------- */
.panel {
  position: relative;
  background: var(--ink-800);
  border: 1px solid var(--line);
  padding: clamp(16px, 2vw, 26px);
}

.panel--raised { background: var(--ink-700); }

.panel--focus { border-color: rgba(255, 122, 26, 0.5); }

.panel--focus::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  width: 30px;
  height: 2px;
  background: var(--signal);
}

.panel--cut {
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 3px 9px;
  border: 1px solid currentColor;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.5;
  color: var(--steel);
  white-space: nowrap;
}

.tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.tag--ok { color: var(--mint); }
.tag--wait { color: var(--signal); }
.tag--alert { color: var(--alert); }

.stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stat__value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(30px, 4.4vw, 54px);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.stat__unit {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--steel-dim);
}

/* ---------- 8. 目录索引 ---------- */
.index-list {
  border-top: 1px solid var(--line);
}

.index-list__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 20px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.12s linear;
}

.index-list__item:hover { border-bottom-color: rgba(255, 122, 26, 0.55); }

.index-list__label {
  font-size: 15px;
  font-weight: 500;
  color: var(--paper);
}

.index-list__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--steel-dim);
}

/* ---------- 9. 图片容器 ---------- */
.media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  background: var(--ink-700);
}

.media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 26, 22, 0) 34%, rgba(7, 26, 22, 0.84) 100%);
  pointer-events: none;
}

.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 4 / 5; }
.media--square { aspect-ratio: 1 / 1; }

.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  padding: 12px 14px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--steel);
}

/* ---------- 10. 分段切换 ---------- */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--line-strong);
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar { display: none; }

.tabs__btn {
  position: relative;
  flex: none;
  padding: 12px 18px;
  background: transparent;
  border: 0;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--steel-dim);
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.12s linear;
}

.tabs__btn::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: -1px;
  height: 2px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.12s linear;
}

.tabs__btn:hover { color: var(--paper); }
.tabs__btn[aria-selected="true"] { color: var(--paper); }
.tabs__btn[aria-selected="true"]::after { transform: scaleX(1); }

.tab-panel { padding-top: 22px; }
.tab-panel[hidden] { display: none; }

/* ---------- 11. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--steel-dim);
}

.breadcrumb a { transition: color 0.12s linear; }
.breadcrumb a:hover { color: var(--signal); }

.breadcrumb__sep {
  color: rgba(111, 135, 150, 0.7);
  font-family: var(--font-mono);
}

/* ---------- 12. 共享头部 ---------- */
.site-header {
  position: relative;
  z-index: 40;
  background-color: var(--ink-900);
  background-image: linear-gradient(to right, rgba(175, 192, 204, 0.05) 1px, transparent 1px);
  background-size: 96px 100%;
  border-bottom: 1px solid var(--line-strong);
}

.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(16px, 2.4vw, 26px) var(--gutter) 0;
}

.masthead__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1.4;
  color: var(--steel);
}

.masthead__meta--end { justify-content: flex-end; }

.masthead__meta-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.masthead__meta-item::before {
  content: "";
  flex: none;
  width: 5px;
  height: 5px;
  background: currentColor;
}

.masthead__meta-item--mint { color: var(--mint); }
.masthead__meta-item--dim { color: var(--steel-dim); }

.brand {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  justify-self: center;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 4.4vw, 48px);
  line-height: 1;
  letter-spacing: -0.045em;
  color: var(--paper);
  transition: color 0.12s linear;
}

.brand__mark {
  margin-top: 3px;
  padding: 3px 5px 2px;
  border: 1px solid rgba(255, 122, 26, 0.45);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  line-height: 1;
  color: var(--signal);
  transition: background 0.12s linear;
}

.brand:hover .brand__name { color: var(--signal); }
.brand:hover .brand__mark { background: rgba(255, 122, 26, 0.14); }

.masthead__tagline {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 10px var(--gutter) 16px;
  text-align: center;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--steel-dim);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: calc(100% - var(--gutter) * 2);
  margin: 0 auto 12px;
  padding: 12px 16px;
  background: var(--ink-800);
  border: 1px solid var(--line-strong);
  color: var(--paper);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: border-color 0.12s linear, color 0.12s linear;
}

.nav-toggle:hover { border-color: var(--signal); color: var(--signal); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: var(--signal);
  transition: background 0.12s linear;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--signal);
  transition: transform 0.12s linear;
}

.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-6px) rotate(-45deg); }

.site-nav {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(13, 43, 36, 0.55);
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.site-nav__link {
  position: relative;
  display: block;
  padding: 13px clamp(10px, 1.4vw, 20px);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--steel);
  white-space: nowrap;
  transition: color 0.12s linear;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: clamp(10px, 1.4vw, 20px);
  right: clamp(10px, 1.4vw, 20px);
  bottom: 5px;
  height: 2px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.12s linear;
}

.site-nav__link:hover { color: var(--paper); }
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"] { color: var(--paper); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 10px var(--gutter);
}

.ticker {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.ticker__label {
  flex: none;
  padding: 2px 8px;
  border: 1px solid rgba(68, 240, 207, 0.32);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--mint);
}

.ticker__track {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel-dim);
}

.ticker__item {
  position: relative;
  padding-left: 11px;
}

.ticker__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 4px;
  height: 4px;
  margin-top: -2px;
  background: var(--signal);
}

/* ---------- 13. 共享页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 120px);
  background: var(--ink-800);
  border-top: 1px solid var(--line-strong);
  color: var(--steel);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: clamp(72px, 12vw, 180px);
  height: 2px;
  background: var(--signal);
}

.footer__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(32px, 5vw, 64px) var(--gutter) 0;
}

.footer__lead {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 22px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.footer__brand {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--paper);
}

.footer__tagline {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--steel);
}

.footer__mark {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--brass);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.4fr;
  gap: clamp(24px, 4vw, 56px);
  padding: clamp(24px, 4vw, 44px) 0;
  border-bottom: 1px solid var(--line);
}

.footer__col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
}

.footer__title {
  margin-bottom: 14px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--steel-dim);
}

.footer__list {
  display: grid;
  gap: 9px;
  margin-bottom: 20px;
}

.footer__list--plain {
  gap: 7px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--steel-dim);
}

.footer__link {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--steel);
  transition: color 0.12s linear;
}

.footer__link:hover,
.footer__link:focus-visible { color: var(--signal); }

.footer__line {
  font-size: 14px;
  line-height: 1.65;
  color: var(--steel);
  overflow-wrap: anywhere;
}

.footer__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px 32px;
  padding: 22px 0 clamp(24px, 4vw, 40px);
}

.footer__note {
  flex: 1 1 420px;
  max-width: 68ch;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--steel-dim);
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--steel-dim);
}

.footer__legal-item {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 14. 滚动显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.36s var(--ease), transform 0.36s var(--ease);
}

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

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1100px) {
  .site-nav__link { padding: 12px 12px; }
  .site-nav__link::after { left: 12px; right: 12px; }
}

@media (max-width: 900px) {
  .masthead {
    grid-template-columns: 1fr;
    gap: 8px;
    justify-items: center;
    padding-top: 16px;
  }

  .masthead__meta { justify-content: center; font-size: 11.5px; }
  .masthead__meta--end { display: none; }

  .brand__name { font-size: clamp(26px, 8vw, 36px); }

  .masthead__tagline {
    padding-bottom: 12px;
    font-size: 11.5px;
    letter-spacing: 0.1em;
  }

  .nav-toggle { display: flex; }

  .site-nav {
    display: none;
    border-top: 0;
    background: var(--ink-800);
  }

  .site-nav[data-open] { display: block; }

  .site-nav__list {
    flex-direction: column;
    flex-wrap: nowrap;
    padding: 0;
  }

  .site-nav__list > li + li { border-top: 1px solid var(--line); }

  .site-nav__link {
    padding: 14px var(--gutter);
    font-size: 14px;
    white-space: normal;
  }

  .site-nav__link::after {
    left: var(--gutter);
    right: auto;
    bottom: 8px;
    width: 24px;
  }

  .header-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding-bottom: 14px;
  }

  .header-bar .btn { width: 100%; }
  .ticker { flex-wrap: wrap; gap: 10px; }

  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; }

  .span-3, .span-4, .span-5 { grid-column: span 3; }
  .span-6, .span-7, .span-8, .span-9, .span-12 { grid-column: span 6; }

  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__col:last-child { grid-column: 1 / -1; }
  .footer__mark { margin-left: 0; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }

  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .span-3, .span-4, .span-5, .span-6,
  .span-7, .span-8, .span-9, .span-12 { grid-column: span 2; }

  .footer__lead { flex-direction: column; align-items: flex-start; gap: 8px; }
  .footer__grid { grid-template-columns: 1fr; }
  .footer__col:last-child { grid-column: auto; }
  .footer__note { flex: 1 1 100%; }

  .index-list__item { justify-content: flex-start; }
  .tabs__btn { padding: 11px 14px; }
  .tabs__btn::after { left: 14px; right: 14px; }
}

/* ---------- 16. 减弱动效 ---------- */
@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;
    transition-delay: 0ms !important;
    scroll-behavior: auto !important;
  }

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