/* ============================================================
   必博体育中文站 · 共享站台样式 /assets/site.css
   夜场战术板：深墨绿底 · 荧光青信号 · 赛道橙行动
   ============================================================ */

:root {
  --c-ink: #06100C;
  --c-deep: #0B1F18;
  --c-moss: #1E3A2F;
  --c-cyan: #3EF2C0;
  --c-orange: #FF6B35;
  --c-white: #F4F7F2;
  --c-stone: #8A938C;
  --c-paper: #E9E2D0;
  --c-clay: #B46A4F;
  --c-slate: #4D6B66;

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

  --rail-w: 15.5rem;
  --header-h: 4rem;
  --gutter: clamp(1.1rem, 4vw, 3.25rem);
  --maxw: 1240px;

  --line: rgba(138, 147, 140, 0.26);
  --line-soft: rgba(138, 147, 140, 0.14);
  --cyan-wash: rgba(62, 242, 192, 0.10);

  --r-organic: 4px 26px 4px 26px;
  --r-soft: 10px;

  --t-fast: 180ms ease;
  --t-med: 240ms ease;
}

/* ---------- 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 { margin: 0; }

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

button { font: inherit; color: inherit; }

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

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

/* ---------- 中文排版 ---------- */

body {
  background: var(--c-deep);
  color: var(--c-white);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.4rem, 6vw, 4.6rem); }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.9rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); line-height: 1.25; }

.num,
.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.prose { max-width: 42rem; }
.prose p { margin-bottom: 1rem; }
.prose p:last-child { margin-bottom: 0; }
.prose h3 { margin: 1.6rem 0 0.6rem; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.link-underline {
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.link-underline:hover { color: var(--c-cyan); }

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

.skip-link {
  position: fixed;
  top: 0.6rem;
  left: 0.6rem;
  z-index: 200;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  background: var(--c-cyan);
  color: var(--c-ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  transform: translateY(-180%);
  transition: transform var(--t-fast);
}

.skip-link:focus {
  transform: translateY(0);
  outline-offset: 3px;
}

/* ---------- 容器与网格 ---------- */

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow { max-width: 52rem; }

.page-shell { padding-block: clamp(1.75rem, 4vw, 3.5rem); }

.grid {
  display: grid;
  gap: clamp(0.9rem, 2vw, 1.5rem);
}

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr)); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-bottom: 0.85rem;
  margin-bottom: clamp(1.1rem, 2.5vw, 1.75rem);
  border-bottom: 1px solid var(--line);
}

.section-title {
  font-size: clamp(1.55rem, 3.2vw, 2.5rem);
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.62rem 1.05rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.02em;
  line-height: 1.3;
  text-align: center;
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast),
              border-color var(--t-fast), transform var(--t-fast);
}

.btn:hover { transform: translateY(-1px); }

.btn--primary {
  background: var(--c-orange);
  color: var(--c-ink);
  border-color: var(--c-orange);
}

.btn--primary:hover { background: #ff8353; border-color: #ff8353; }

.btn--ghost {
  background: transparent;
  color: var(--c-white);
  border-color: rgba(244, 247, 242, 0.28);
}

.btn--ghost:hover {
  color: var(--c-cyan);
  border-color: var(--c-cyan);
}

.btn--block { width: 100%; }

/* ---------- 标签 ---------- */

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.24rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-stone);
  white-space: nowrap;
}

.tag--live {
  background: var(--c-cyan);
  border-color: var(--c-cyan);
  color: var(--c-ink);
  font-weight: 700;
}

/* ---------- 卡片 ---------- */

.card {
  position: relative;
  padding: clamp(1rem, 2.4vw, 1.6rem);
  background: var(--c-moss);
  border: 1px solid var(--line);
  border-radius: var(--r-organic);
  transition: border-color var(--t-med), transform var(--t-med), background var(--t-med);
}

.card:hover {
  border-color: var(--c-cyan);
  transform: translateY(-2px);
}

.card--paper {
  background: var(--c-paper);
  color: var(--c-ink);
  border-color: rgba(6, 16, 12, 0.14);
}

.card--paper:hover { border-color: var(--c-clay); }

.card--flush { padding: 0; overflow: hidden; }

/* ---------- 图片容器（页面阶段放图） ---------- */

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: linear-gradient(0deg, var(--c-moss), var(--c-moss));
  border-radius: 4px 24px 4px 24px;
}

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

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(62, 242, 192, 0.18);
  border-radius: inherit;
  pointer-events: none;
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }

.media-caption {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  line-height: 1.55;
  letter-spacing: 0.02em;
  color: var(--c-stone);
}

/* ---------- 数据表格 ---------- */

.table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 34rem;
}

.data-table th {
  padding: 0.55rem 0.65rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: left;
  color: var(--c-stone);
  white-space: nowrap;
}

.data-table td {
  padding: 0.7rem 0.65rem;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: middle;
}

.data-table tbody tr { transition: background var(--t-fast); }
.data-table tbody tr:hover { background: var(--cyan-wash); }

/* ---------- 面包屑 ---------- */

.breadcrumbs {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--c-stone);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumbs li { display: inline-flex; align-items: center; }

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.45rem;
  color: var(--c-slate);
}

.breadcrumbs a {
  color: var(--c-stone);
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.breadcrumbs a:hover {
  color: var(--c-cyan);
  border-bottom-color: currentColor;
}

.breadcrumbs [aria-current="page"] { color: var(--c-white); }

/* ============================================================
   页头 · 侧边轨道 / 移动抽屉
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--c-ink);
  border-bottom: 1px solid var(--line);
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-h);
  padding: 0.55rem var(--gutter);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.brand-mark {
  position: relative;
  flex: 0 0 auto;
  width: 1.55rem;
  height: 1.55rem;
  background: var(--c-cyan);
  border-radius: 4px 12px 4px 12px;
}

.brand-mark::after {
  content: "";
  position: absolute;
  right: 3px;
  bottom: 3px;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--c-orange);
}

.brand-text { display: block; }

.brand-name {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.12rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
  transition: color var(--t-fast);
}

.brand-note {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  line-height: 1.4;
  letter-spacing: 0.1em;
  color: var(--c-stone);
}

.brand:hover .brand-name { color: var(--c-cyan); }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.8rem;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--c-white);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: border-color var(--t-fast), color var(--t-fast);
}

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

.nav-toggle-box {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 1.1rem;
}

.nav-toggle-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--c-cyan);
  transition: transform var(--t-fast);
}

.site-header[data-open="true"] .nav-toggle-line:nth-child(1) {
  transform: translateY(3.5px) rotate(45deg);
}

.site-header[data-open="true"] .nav-toggle-line:nth-child(2) {
  transform: translateY(-3.5px) rotate(-45deg);
}

.nav-toggle-text { display: inline-block; min-width: 2.4em; text-align: left; }

/* 移动端：右侧抽屉 */

.site-nav {
  position: fixed;
  top: var(--header-h);
  right: 0;
  bottom: 0;
  z-index: 95;
  display: flex;
  flex-direction: column;
  width: min(88vw, 21rem);
  padding: 1.25rem 1.15rem 1.5rem;
  background: var(--c-ink);
  border-left: 1px solid rgba(62, 242, 192, 0.22);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  transform: translateX(102%);
  visibility: hidden;
  transition: transform var(--t-med), visibility var(--t-med);
}

.site-header[data-open="true"] .site-nav {
  transform: translateX(0);
  visibility: visible;
}

.nav-caption {
  padding-inline: 0.6rem;
  margin-bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-stone);
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.6rem;
  border: 1px solid transparent;
  border-radius: var(--r-soft);
  font-size: 1rem;
  color: var(--c-white);
  transition: background var(--t-fast), border-color var(--t-fast), color var(--t-fast);
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  color: var(--c-stone);
  transition: color var(--t-fast);
}

.nav-label { line-height: 1.4; }

.nav-link:hover {
  background: rgba(62, 242, 192, 0.07);
  border-color: rgba(62, 242, 192, 0.35);
  color: var(--c-cyan);
}

.nav-link:hover .nav-index { color: var(--c-cyan); }

.nav-link[aria-current="page"] {
  background: rgba(62, 242, 192, 0.12);
  border-color: var(--c-cyan);
  color: var(--c-cyan);
}

.nav-link[aria-current="page"] .nav-index { color: var(--c-cyan); }

.rail-foot {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.rail-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.rail-progress { margin-top: 0.25rem; }

.rail-progress-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  color: var(--c-stone);
}

.rail-progress-label { text-transform: uppercase; }

.rail-progress-value { color: var(--c-cyan); }

.rail-progress-track {
  margin-top: 0.4rem;
  height: 3px;
  border-radius: 999px;
  background: rgba(138, 147, 140, 0.28);
  overflow: hidden;
}

.rail-progress-bar {
  display: block;
  width: 0;
  height: 100%;
  border-radius: 999px;
  background: var(--c-cyan);
  transition: width 120ms linear;
}

.to-top {
  align-self: flex-start;
  padding: 0.4rem 0.7rem;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--c-stone);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.to-top:hover { color: var(--c-white); border-color: var(--c-white); }

.nav-scrim {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  z-index: 85;
  background: rgba(6, 16, 12, 0.74);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-fast), visibility var(--t-fast);
}

.site-header[data-open="true"] .nav-scrim {
  opacity: 1;
  visibility: visible;
}

/* ============================================================
   页脚
   ============================================================ */

.site-footer {
  background: var(--c-ink);
  color: var(--c-white);
  border-top: 2px solid var(--c-moss);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 3vw, 2.6rem);
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(2.2rem, 5vw, 3.6rem) var(--gutter) clamp(1.5rem, 3vw, 2rem);
  border-bottom: 1px solid var(--line-soft);
}

.footer-coord {
  margin-bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.footer-logo {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.35rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.footer-desc {
  max-width: 26rem;
  margin-top: 0.55rem;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--c-stone);
}

.footer-cta { margin-top: 1.1rem; }

.footer-title {
  margin-bottom: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-stone);
}

.footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-list li + li { margin-top: 0.45rem; }

.footer-list a {
  font-size: 0.92rem;
  color: var(--c-white);
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.footer-list a:hover {
  color: var(--c-cyan);
  border-bottom-color: currentColor;
}

.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.contact-list li {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}

.contact-list li + li { margin-top: 0.5rem; }

.contact-key {
  flex: 0 0 2.6rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-slate);
}

.contact-val {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.6;
  letter-spacing: 0.01em;
  color: var(--c-white);
  word-break: break-word;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem 1.5rem;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 1rem var(--gutter) 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: var(--c-stone);
}

.footer-legal { color: var(--c-slate); }

.footer-copy { color: var(--c-stone); }

/* ============================================================
   响应式：平板
   ============================================================ */

@media (min-width: 40rem) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .brand-name { font-size: 1.2rem; }
}

/* ============================================================
   响应式：桌面 · 侧边轨道
   ============================================================ */

@media (min-width: 64rem) {
  body { padding-left: var(--rail-w); }

  .site-header {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--rail-w);
    display: flex;
    flex-direction: column;
    border-bottom: 0;
    border-right: 1px solid var(--line);
    background: var(--c-ink);
  }

  .header-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
    min-height: 0;
    padding: 1.3rem 1.1rem 0.85rem;
    border-bottom: 1px solid var(--line-soft);
  }

  .brand { width: 100%; }
  .brand-note { font-size: 0.55rem; }

  .nav-toggle { display: none; }

  .site-nav {
    position: static;
    transform: none;
    visibility: visible;
    width: auto;
    flex: 1 1 auto;
    min-height: 0;
    padding: 1rem 1.05rem 1.15rem;
    background: transparent;
    border-left: 0;
    overflow-y: auto;
  }

  .nav-scrim { display: none; }

  .nav-caption { padding-inline: 0.55rem; }

  .nav-link {
    font-size: 0.94rem;
    padding: 0.52rem 0.55rem;
  }

  .rail-foot { margin-top: auto; }

  .footer-inner { grid-template-columns: 1.7fr 0.8fr 0.9fr 1.25fr; }
  .footer-brand { grid-column: auto; }
}

/* ============================================================
   减少动态
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}