/* ==========================================================================
   Home体育 · 共享站点样式 /assets/site.css
   夜间赛场指挥中心 · 深墨绿 / 夜场蓝 / 暖白 · 锐利直角与精密网格
   ========================================================================== */

/* ---------- 01 设计变量 ---------- */
:root {
  --c-deep: #0B1F1A;
  --c-night: #0E1B2A;
  --c-paper: #F7F3EA;
  --c-cyan: #29F2D0;
  --c-orange: #FF6B35;
  --c-grid: #2A3B3A;
  --c-mist: #BFE8DF;
  --c-yellow: #F5C542;
  --c-ink: #07110F;

  --c-text: #F7F3EA;
  --c-text-dim: rgba(247, 243, 234, 0.66);
  --c-text-faint: rgba(247, 243, 234, 0.42);
  --c-line-soft: rgba(191, 232, 223, 0.16);
  --c-line-ink: rgba(42, 59, 58, 0.24);
  --c-cyan-glow: rgba(41, 242, 208, 0.16);

  --font-sans: "HarmonyOS Sans SC", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --fs-display: 72px;
  --fs-h1: 56px;
  --fs-h2: 36px;
  --fs-h3: 24px;
  --fs-body: 16px;
  --fs-small: 13px;
  --fs-tag: 11px;

  --w-max: 1440px;
  --pad-x: 48px;
  --pad-x-sm: 20px;
  --gap: 24px;
  --band-h: 64px;

  --pill: 999px;
  --ease: 0.18s ease;
}

/* ---------- 02 重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.7;
  font-weight: 400;
  color: var(--c-ink);
  background-color: var(--c-paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd, figcaption { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg, video, picture { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }

:where(h1, h2, h3, h4) {
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(34px, 5.4vw, var(--fs-h1)); line-height: 1.06; }
h2 { font-size: clamp(26px, 3.4vw, var(--fs-h2)); line-height: 1.15; }
h3 { font-size: clamp(20px, 2vw, var(--fs-h3)); line-height: 1.3; }

p { text-wrap: pretty; }

/* 等宽数据标签 */
code, kbd, samp, .mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
  letter-spacing: 0.04em;
}

/* ---------- 03 焦点与可访问性 ---------- */
:where(a, button, [tabindex], summary, input, select, textarea):focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 300;
  display: inline-block;
  padding: 11px 20px;
  background: var(--c-cyan);
  color: var(--c-ink);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
  border: 1px solid var(--c-ink);
  transform: translateY(-260%);
  transition: transform var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
}

/* ---------- 04 布局容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--w-max);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.section {
  position: relative;
  padding-block: 96px;
}

.section--dark { background-color: var(--c-deep); color: var(--c-text); }
.section--night { background-color: var(--c-night); color: var(--c-text); }

.grid { display: grid; gap: var(--gap); }

/* ---------- 05 头部控制台 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  padding: 14px var(--pad-x) 0;
}

.header-shell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: var(--w-max);
  margin-inline: auto;
  padding: 10px 14px 10px 18px;
  background-color: rgba(11, 31, 26, 0.95);
  border: 1px solid var(--c-line-soft);
  border-radius: 2px;
  box-shadow: 0 22px 44px -32px rgba(7, 17, 15, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.header-shell::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 100%;
  background-color: var(--c-cyan);
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--c-text);
}

.brand-mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid rgba(41, 242, 208, 0.55);
}

.brand-pulse {
  display: block;
  width: 8px;
  height: 8px;
  background-color: var(--c-cyan);
  box-shadow: 0 0 0 3px var(--c-cyan-glow);
  transition: transform var(--ease);
}

.brand:hover .brand-pulse { transform: translateY(-2px); }

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand-sub {
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-text-faint);
}

/* 悬浮胶囊导航 */
.nav-capsule {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  margin-inline: auto;
  padding: 5px 8px 5px 12px;
  background-color: rgba(14, 27, 42, 0.78);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--pill);
}

.nav-capsule-label {
  padding-right: 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--c-cyan);
  border-right: 1px solid var(--c-line-soft);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 7px 13px;
  font-size: 14px;
  line-height: 1.3;
  color: var(--c-text-dim);
  border-radius: var(--pill);
  transition: color var(--ease), background-color var(--ease);
}

.nav-link:hover {
  color: var(--c-text);
  background-color: rgba(191, 232, 223, 0.08);
}

.nav-link[aria-current="page"] {
  color: var(--c-text);
  font-weight: 700;
}

.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 4px;
  height: 4px;
  margin-left: -2px;
  border-radius: 50%;
  background-color: var(--c-cyan);
}

/* 右侧状态区 */
.header-side {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.version-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-mist);
  border: 1px solid var(--c-line-soft);
}

.chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--c-cyan);
  box-shadow: 0 0 0 3px var(--c-cyan-glow);
}

/* ---------- 06 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: var(--fs-small);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.04em;
  text-align: center;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: color var(--ease), background-color var(--ease), border-color var(--ease);
}

.btn-ghost {
  color: var(--c-text);
  background-color: transparent;
  border-color: var(--c-line-soft);
}

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

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

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

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

.btn-accent:hover {
  color: var(--c-ink);
  background-color: var(--c-yellow);
  border-color: var(--c-yellow);
}

.btn-ink {
  color: var(--c-paper);
  background-color: var(--c-deep);
  border-color: var(--c-deep);
}

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

.header-cta { font-size: 12px; padding: 8px 14px; }

/* ---------- 07 移动导航按钮 ---------- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 11px;
  color: var(--c-text);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  border: 1px solid var(--c-line-soft);
  border-radius: 2px;
}

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

.nav-toggle-lines {
  position: relative;
  display: block;
  width: 16px;
  height: 10px;
}

.nav-toggle-lines::before,
.nav-toggle-lines::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 1px;
  background-color: var(--c-cyan);
  transition: transform var(--ease), top var(--ease);
}

.nav-toggle-lines::before { top: 0; }
.nav-toggle-lines::after { top: 9px; }

.site-header[data-open] .nav-toggle-lines::before {
  top: 4px;
  transform: rotate(45deg);
}

.site-header[data-open] .nav-toggle-lines::after {
  top: 4px;
  transform: rotate(-45deg);
}

/* ---------- 08 滚动进度 ---------- */
.scroll-meter {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 200;
  width: 0;
  height: 2px;
  background-image: linear-gradient(90deg, var(--c-cyan), var(--c-orange));
  pointer-events: none;
}

/* ---------- 09 页脚 ---------- */
.site-footer {
  position: relative;
  background-color: var(--c-deep);
  color: var(--c-text);
  border-top: 1px solid var(--c-line-soft);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(191, 232, 223, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(191, 232, 223, 0.045) 1px, transparent 1px);
  background-size: 96px 100%, 100% 72px;
}

.site-footer > * { position: relative; }

/* 页脚上方横向索引条带 */
.footer-index {
  background-color: rgba(14, 27, 42, 0.62);
  border-bottom: 1px solid var(--c-line-soft);
}

.index-track {
  display: flex;
  align-items: center;
  gap: 30px;
  max-width: var(--w-max);
  height: var(--band-h);
  margin-inline: auto;
  padding-inline: var(--pad-x);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  white-space: nowrap;
  scrollbar-width: thin;
  scrollbar-color: var(--c-grid) transparent;
}

.index-track:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: -4px;
}

.index-group {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.index-tag {
  padding: 3px 7px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--c-cyan);
  border: 1px solid rgba(41, 242, 208, 0.38);
}

.index-link {
  font-size: var(--fs-small);
  color: var(--c-text-dim);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color var(--ease), border-color var(--ease);
}

.index-link:hover {
  color: var(--c-text);
  border-bottom-color: var(--c-cyan);
}

/* 页脚主体 */
.footer-main {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) repeat(5, minmax(0, 1fr));
  gap: 32px;
  max-width: var(--w-max);
  margin-inline: auto;
  padding: 64px var(--pad-x) 44px;
}

.footer-brand-name {
  display: block;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.footer-summary {
  max-width: 32ch;
  margin-top: 14px;
  font-size: var(--fs-small);
  line-height: 1.9;
  color: var(--c-text-dim);
}

.footer-contact {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--c-text-dim);
}

.footer-contact-key {
  flex: 0 0 auto;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
}

.footer-col-num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: rgba(41, 242, 208, 0.62);
}

.footer-col-title {
  display: inline-block;
  padding-bottom: 7px;
  font-size: var(--fs-small);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--c-text);
  border-bottom: 1px solid rgba(41, 242, 208, 0.4);
  transition: color var(--ease), border-color var(--ease);
}

.footer-col-title:hover {
  color: var(--c-cyan);
  border-bottom-color: var(--c-cyan);
}

.footer-col p {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.8;
  color: var(--c-text-faint);
}

/* 页脚法务条 */
.footer-legal {
  background-color: rgba(7, 17, 15, 0.55);
  border-top: 1px solid var(--c-line-soft);
}

.footer-legal-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 26px;
  max-width: var(--w-max);
  margin-inline: auto;
  padding: 20px var(--pad-x);
  font-size: 12px;
  color: var(--c-text-dim);
}

.legal-list {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.legal-list a {
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

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

.icp {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}

.footer-year {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--c-text-faint);
}

/* ---------- 10 基础内容组件 ---------- */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-tag);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.kicker::before {
  content: "";
  width: 18px;
  height: 1px;
  background-color: currentColor;
}

.section--dark .kicker,
.section--night .kicker { color: var(--c-cyan); }

.card {
  position: relative;
  padding: 24px;
  background-color: var(--c-paper);
  border: 1px solid var(--c-line-ink);
  border-radius: 2px;
  transition: border-color var(--ease), box-shadow var(--ease);
}

.card:hover {
  border-color: var(--c-cyan);
  box-shadow: 0 18px 36px -30px var(--c-deep);
}

.card--dark {
  background-color: var(--c-night);
  color: var(--c-text);
  border-color: var(--c-line-soft);
}

.card--dark:hover { border-color: var(--c-cyan); }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 20px;
  font-family: var(--font-mono);
  font-size: var(--fs-tag);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(7, 17, 15, 0.55);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(7, 17, 15, 0.3);
}

.breadcrumb a {
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

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

/* 可复用图片容器（页面阶段放置 img / picture） */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background-color: var(--c-night);
  border: 1px solid var(--c-line-soft);
  border-radius: 2px;
}

.media-frame > img,
.media-frame > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

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

.media-frame--ink {
  background-color: var(--c-mist);
  border-color: var(--c-line-ink);
}

.media-frame--shade::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(180deg, rgba(7, 17, 15, 0) 42%, rgba(7, 17, 15, 0.78) 100%);
}

.media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: rgba(7, 17, 15, 0.55);
}

.media-caption--dark { color: var(--c-text-dim); }

/* ---------- 11 响应式 ---------- */
@media (max-width: 1180px) {
  .nav-link { padding: 7px 10px; font-size: 13px; }
  .nav-capsule-label { display: none; }
  .brand-sub { display: none; }
  .footer-main {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    row-gap: 36px;
  }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 980px) {
  .site-header { padding: 10px var(--pad-x-sm) 0; }
  .header-shell { padding: 9px 12px 9px 14px; }

  .nav-capsule {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 8px);
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 8px;
    border-radius: 2px;
    background-color: rgba(11, 31, 26, 0.99);
    box-shadow: 0 26px 50px -30px rgba(7, 17, 15, 1);
  }

  .site-header[data-open] .nav-capsule { display: flex; }

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

  .nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 10px;
    font-size: 15px;
    border-bottom: 1px solid rgba(191, 232, 223, 0.08);
    border-radius: 0;
  }

  .nav-link[aria-current="page"]::after {
    position: static;
    order: 2;
    width: 6px;
    height: 6px;
    margin: 0;
  }

  .nav-toggle { display: inline-flex; }
  .version-chip { display: none; }
}

@media (max-width: 900px) {
  :root { --pad-x: var(--pad-x-sm); }
  .wrap { padding-inline: var(--pad-x-sm); }
  .section { padding-block: 60px; }
}

@media (max-width: 760px) {
  .section { padding-block: 52px; }
  .footer-main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 20px;
    padding: 44px var(--pad-x-sm) 32px;
  }
  .footer-legal-inner { padding-inline: var(--pad-x-sm); }
  .footer-year { margin-left: 0; }
  .index-track { padding-inline: var(--pad-x-sm); gap: 20px; }
  .index-group { gap: 10px; }
  .header-cta { padding: 7px 10px; font-size: 11px; }
  .brand-name { font-size: 15px; }
}

@media (max-width: 420px) {
  .nav-toggle-text { display: none; }
  .nav-toggle { padding: 8px 9px; }
}

/* ---------- 12 减少动态偏好 ---------- */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .skip-link { transition: none; }
  .scroll-meter { display: none; }
}