/* ============================================
   OB体育 · Site Kit — 全站共享样式
   ============================================ */

/* ---------- 1. 设计变量 ---------- */
:root {
  --color-bg: #0A1A2F;
  --color-panel: #16283E;
  --color-glass: rgba(255, 255, 255, 0.06);
  --color-accent: #FF6B00;
  --color-ink: #F2E9E0;
  --color-muted: #A6A098;
  --color-border: #2E4A6A;
  --color-success: #6B8E6B;
  --color-terra: #D99A6C;

  --header-width: 264px;
  --header-height-mobile: 64px;
  --content-max: 1320px;
  --shell-gutter: 24px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-display: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, monospace;

  --ease: 150ms ease-out;
  --ease-panel: 260ms cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 2. Reset 与基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--color-bg);
  background-image:
    radial-gradient(ellipse 55% 45% at 88% 0%, rgba(255, 107, 0, 0.055), transparent 70%),
    linear-gradient(180deg, rgba(22, 40, 62, 0.35), transparent 320px);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

p,
ul,
ol,
dl,
figure {
  margin-top: 0;
}

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

button {
  font-family: inherit;
}

/* ---------- 3. 中文排版 ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.25rem, 4.5vw, 3.5rem); }
h2 { font-size: clamp(1.625rem, 3vw, 2.5rem); }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.125rem; }

p { margin-bottom: 1em; }

strong {
  font-weight: 700;
  color: var(--color-ink);
}

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

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

::selection {
  background: var(--color-accent);
  color: #fff;
}

/* ---------- 4. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 5000;
  padding: 10px 18px;
  background: var(--color-accent);
  color: #fff;
  font-weight: 800;
  font-size: 0.875rem;
  line-height: 1;
  transform: translateY(-300%);
  transition: transform 180ms ease-out;
}

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

/* ---------- 5. 布局骨架 ---------- */
.site-main {
  display: block;
  min-height: 82vh;
}

.container,
.footer-shell {
  width: min(calc(100% - 48px), var(--content-max));
  margin-inline: auto;
}

@media (min-width: 1025px) {
  body {
    padding-left: var(--header-width);
  }
}

/* ---------- 6. 页头（桌面控制台） ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1200;
  width: var(--header-width);
  height: 100vh;
  background-color: var(--color-panel);
  background-image: repeating-linear-gradient(
    180deg,
    transparent 0,
    transparent 3px,
    rgba(255, 255, 255, 0.012) 3px,
    rgba(255, 255, 255, 0.012) 4px
  );
  border-right: 1px solid var(--color-border);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent) 0, var(--color-accent) 72px, rgba(255, 107, 0, 0.18) 72px, transparent 100%);
  pointer-events: none;
}

.header-console {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.brand-unit {
  padding: var(--space-5) var(--space-5) var(--space-4);
  border-bottom: 1px solid rgba(46, 74, 106, 0.65);
}

.brand-anchor {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-ink);
}

.brand-anchor:hover {
  color: var(--color-ink);
  opacity: 0.88;
}

.brand-sigil {
  position: relative;
  display: block;
  width: 40px;
  height: 40px;
  flex: none;
  background: var(--color-accent);
  clip-path: polygon(0 0, 80% 0, 100% 20%, 100% 100%, 20% 100%, 0 80%);
}

.brand-sigil::after {
  content: "";
  position: absolute;
  inset: 7px;
  background: var(--color-panel);
  clip-path: polygon(35% 0, 65% 30%, 65% 70%, 35% 100%, 0 70%, 0 30%);
}

.brand-text-block {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.375rem;
  letter-spacing: 0.02em;
  color: var(--color-ink);
}

.brand-domain {
  display: block;
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.16em;
  color: var(--color-muted);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.875rem;
  line-height: 1;
  cursor: pointer;
  transition: border-color 150ms ease-out;
}

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

.nav-toggle-bars {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 18px;
}

.nav-toggle-bars .bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transition: transform 180ms ease-out;
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(2) {
  transform: translateY(-4px) rotate(-45deg);
}

.nav-toggle-label {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.06em;
}

.nav-panel {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: var(--space-4) 0;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0 var(--space-2);
}

.nav-item {
  margin-bottom: 2px;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 44px;
  padding: 10px var(--space-3);
  border-left: 3px solid transparent;
  color: var(--color-muted);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  transition: color 150ms ease-out, background-color 150ms ease-out, border-color 150ms ease-out;
}

.nav-link:hover {
  color: var(--color-ink);
  background: var(--color-glass);
  border-left-color: var(--color-accent);
}

.nav-link[aria-current="page"] {
  color: var(--color-ink);
  background: linear-gradient(90deg, rgba(255, 107, 0, 0.13), rgba(255, 107, 0, 0.02));
  border-left-color: var(--color-accent);
}

.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  right: var(--space-3);
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  transform: rotate(45deg);
}

.nav-index {
  min-width: 20px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--color-terra);
}

.nav-label {
  letter-spacing: 0.04em;
}

.status-console {
  margin: var(--space-3);
  padding: var(--space-3);
  background: rgba(10, 26, 47, 0.72);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-success);
}

.status-console::before {
  content: "SYS / 数据核对";
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--color-muted);
}

.status-console-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.signal-dot {
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 6px rgba(107, 142, 107, 0.55);
  animation: signal-pulse 2.4s ease-in-out infinite;
}

.status-text {
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--color-ink);
}

@keyframes signal-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}

.scroll-rail {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 5px;
  z-index: 3000;
  background: rgba(255, 255, 255, 0.05);
  pointer-events: none;
}

.scroll-progress {
  display: block;
  width: 100%;
  height: 0;
  background: linear-gradient(180deg, var(--color-accent), var(--color-terra));
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.speed-edge {
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent) 0, var(--color-accent) 180px, rgba(255, 107, 0, 0.22) 180px, transparent 100%);
}

.footer-shell {
  padding-top: var(--space-7);
  padding-bottom: var(--space-5);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 1.3fr;
  gap: clamp(24px, 4vw, 56px);
}

.footer-brand-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.375rem;
  color: var(--color-ink);
  margin: 0 0 var(--space-3);
}

.footer-trust {
  max-width: 380px;
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--color-muted);
}

.footer-nav {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.footer-nav-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.footer-link {
  padding: 4px 0 4px 16px;
  border-left: 2px solid transparent;
  color: var(--color-muted);
  font-size: 0.875rem;
  transition: color 150ms ease-out, border-color 150ms ease-out;
}

.footer-link:hover {
  color: var(--color-ink);
  border-left-color: var(--color-accent);
}

.footer-contact {
  font-size: 0.8125rem;
}

.footer-contact-list {
  margin: 0;
  padding: 0;
}

.contact-item {
  display: flex;
  gap: 12px;
  padding: 5px 0;
}

.contact-item dt {
  flex: none;
  width: 40px;
  color: var(--color-muted);
}

.contact-item dd {
  margin: 0;
  color: var(--color-ink);
}

.footer-contact-note {
  margin: var(--space-3) 0 0;
  padding-top: var(--space-3);
  border-top: 1px solid rgba(46, 74, 106, 0.6);
  font-size: 0.75rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid rgba(46, 74, 106, 0.6);
  font-size: 0.75rem;
  color: var(--color-muted);
}

/* ---------- 8. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 10px 22px;
  border: 2px solid var(--color-border);
  background: transparent;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  line-height: 1;
  cursor: pointer;
  transition: border-color 150ms ease-out, background-color 150ms ease-out, color 150ms ease-out;
}

.btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: transparent;
  color: var(--color-accent);
}

.btn-ghost {
  background: var(--color-glass);
}

.btn-ghost:hover {
  background: transparent;
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ---------- 9. 面包屑 ---------- */
.breadcrumb {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 0;
  margin: 0 0 var(--space-5);
  padding: var(--space-2) 0;
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--color-border);
}

.breadcrumb a {
  color: var(--color-muted);
  transition: color 150ms ease-out;
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb [aria-current="page"] {
  color: var(--color-ink);
}

/* ---------- 10. 区块与标题 ---------- */
.section {
  padding-block: clamp(48px, 6vw, 96px);
}

.section-tight {
  padding-block: var(--space-6);
}

.section-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.section-kicker::before {
  content: "";
  flex: none;
  width: 28px;
  height: 2px;
  background: var(--color-accent);
}

.page-title {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.1;
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  margin: 0 0 var(--space-2);
  text-wrap: balance;
}

.page-lead {
  max-width: 660px;
  margin: 0 0 var(--space-5);
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-muted);
}

/* ---------- 11. 栅格 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-5);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.col-span-2  { grid-column: span 2; }
.col-span-3  { grid-column: span 3; }
.col-span-4  { grid-column: span 4; }
.col-span-5  { grid-column: span 5; }
.col-span-6  { grid-column: span 6; }
.col-span-7  { grid-column: span 7; }
.col-span-8  { grid-column: span 8; }
.col-span-9  { grid-column: span 9; }
.col-span-10 { grid-column: span 10; }
.col-span-11 { grid-column: span 11; }
.col-span-12 { grid-column: span 12; }

/* ---------- 12. 卡片与面板 ---------- */
.card {
  padding: var(--space-5);
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  transition: border-color 150ms ease-out, transform 150ms ease-out;
}

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

.glass-panel {
  background: var(--color-glass);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

@supports (backdrop-filter: blur(8px)) {
  .glass-panel {
    backdrop-filter: blur(8px);
  }
}

/* ---------- 13. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border: 1px solid rgba(255, 107, 0, 0.4);
  background: rgba(255, 107, 0, 0.12);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.tag-success {
  border-color: rgba(107, 142, 107, 0.4);
  background: rgba(107, 142, 107, 0.12);
  color: var(--color-success);
}

/* ---------- 14. 数据行 ---------- */
.data-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.data-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.data-label {
  color: var(--color-muted);
  font-size: 0.875rem;
}

.data-value {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-accent);
  white-space: nowrap;
}

/* ---------- 15. 媒体容器 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--color-panel);
  border: 1px solid var(--color-border);
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg, transparent 30%, rgba(255, 255, 255, 0.045) 50%, transparent 70%);
  pointer-events: none;
}

.media-16x9 { aspect-ratio: 16 / 9; }
.media-4x3  { aspect-ratio: 4 / 3; }
.media-3x2  { aspect-ratio: 3 / 2; }
.media-1x1  { aspect-ratio: 1 / 1; }

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

/* ---------- 16. 装饰组件 ---------- */
.angle-accent {
  display: inline-block;
  width: 40px;
  height: 4px;
  background: var(--color-accent);
  transform: skewX(-28deg);
}

.speed-stripes {
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(255, 255, 255, 0.045) 0,
    rgba(255, 255, 255, 0.045) 1px,
    transparent 1px,
    transparent 7px
  );
}

/* ---------- 17. 响应式 ---------- */
@media (max-width: 1024px) {
  body {
    padding-left: 0;
  }

  .site-header {
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }

  .header-console {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height-mobile);
    padding: 0 var(--shell-gutter);
  }

  .brand-unit {
    padding: 0;
    border-bottom: none;
  }

  .brand-domain {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-panel {
    position: fixed;
    top: var(--header-height-mobile);
    left: 0;
    bottom: 0;
    z-index: 1200;
    width: min(300px, 82vw);
    height: auto;
    margin: 0;
    padding: var(--space-4) 0;
    background-color: var(--color-panel);
    border-right: 1px solid var(--color-border);
    box-shadow: 12px 0 32px rgba(0, 0, 0, 0.35);
    visibility: hidden;
    flex: none;
    overflow-y: auto;
    transform: translateX(-108%);
    transition: transform 260ms var(--ease-panel), visibility 0s linear 260ms;
  }

  .nav-panel[data-open] {
    visibility: visible;
    transform: translateX(0);
    transition: transform 260ms var(--ease-panel), visibility 0s linear 0s;
  }

  .status-console {
    display: none;
  }

  .site-main {
    padding-top: var(--header-height-mobile);
  }
}

@media (max-width: 900px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .col-span-2, .col-span-3, .col-span-4, .col-span-5, .col-span-6,
  .col-span-7, .col-span-8, .col-span-9, .col-span-10, .col-span-11 {
    grid-column: span 12;
  }
}

@media (max-width: 600px) {
  .footer-top {
    grid-template-columns: 1fr;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-base {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}

@media (max-width: 420px) {
  .nav-toggle-label {
    display: none;
  }
}

/* ---------- 18. 减少动态偏好 ---------- */
@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;
  }

  .card:hover {
    transform: none;
  }
}