/* =========================================================
   狗威赛场 · 共享样式表 /assets/site.css
   夜场记分牌气质：炭黑底 + 荧光黄绿信号 + 切角面板
   ========================================================= */

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

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

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, figure, blockquote, dl, dd { margin: 0; }

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

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

table { border-collapse: collapse; width: 100%; }

:focus-visible {
  outline: 2px solid #C9FF3F;
  outline-offset: 3px;
}

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #0A0D10;
  --ink-800: #141A1E;
  --ink-750: #1B2412;
  --line: #2B333A;
  --fog: #F3F7EE;
  --mist: #93A4B2;
  --volt: #C9FF3F;
  --blue: #2E7BFF;
  --orange: #FF6A2B;
  --violet: #7B61FF;

  --font-display: "Helvetica Neue", "Arial Narrow", "Liberation Sans Narrow",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", "Helvetica Neue",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo,
    Consolas, "Liberation Mono", monospace;

  --wrap: 1520px;
  --gutter: clamp(16px, 4vw, 56px);

  --dur-fast: 120ms;
  --dur: 160ms;
  --dur-slow: 200ms;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink-900);
  background-image:
    radial-gradient(120% 78% at 84% -12%, rgba(46, 123, 255, 0.16), transparent 62%),
    radial-gradient(96% 70% at 4% -4%, rgba(201, 255, 63, 0.10), transparent 58%);
  background-repeat: no-repeat;
  color: var(--fog);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.01em;
}

p { text-wrap: pretty; }

::selection {
  background: var(--volt);
  color: var(--ink-900);
}

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

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

/* ---------- 4. 布局工具 ---------- */
.container {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(48px, 7vw, 96px); }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px 28px;
  margin-bottom: clamp(24px, 3.2vw, 44px);
}

.section__index {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--volt);
  margin-bottom: 10px;
}

.section__title {
  font-size: clamp(26px, 3.4vw, 46px);
}

.section__desc {
  max-width: 56ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.75;
}

.grid {
  display: grid;
  gap: clamp(16px, 2vw, 24px);
}

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

.grid--auto { grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }

/* ---------- 5. 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: -72px;
  left: 16px;
  z-index: 120;
  padding: 12px 20px;
  background: var(--volt);
  color: var(--ink-900);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  transition: top var(--dur) var(--ease);
}

.skip-link:focus-visible {
  top: 16px;
  outline-offset: -4px;
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.05em;
  line-height: 1;
  color: var(--fog);
  background: transparent;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition:
    background var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.btn:focus-visible { outline-offset: -4px; }

.btn--primary {
  color: var(--ink-900);
  background: var(--volt);
  border-color: var(--volt);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--fog);
  border-color: var(--fog);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  color: var(--volt);
  border-color: var(--volt);
  background: rgba(201, 255, 63, 0.08);
}

.btn--sm {
  padding: 10px 15px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
}

/* ---------- 7. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 13, 16, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* 7.1 上层信息条 */
.topbar {
  background-image: linear-gradient(
    90deg,
    rgba(201, 255, 63, 0.10),
    rgba(10, 13, 16, 0) 46%,
    rgba(46, 123, 255, 0.12)
  );
  border-bottom: 1px solid rgba(43, 51, 58, 0.75);
}

.topbar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 6px 24px;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 8px var(--gutter);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.topbar__note {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
}

.topbar__dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 106, 43, 0.18);
}

.topbar__mail {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--blue);
}

/* 7.2 下层导航行 */
.header-main { position: relative; }

.header-main__inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 40px);
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 14px var(--gutter);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  flex: 0 0 auto;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  background: var(--volt);
  color: var(--ink-900);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 0.02em;
  line-height: 1;
  clip-path: polygon(12px 0, 100% 0, 100% 100%, 0 100%, 0 12px);
  transition: background var(--dur) var(--ease);
}

.brand:hover .brand__mark,
.brand:focus-visible .brand__mark { background: var(--fog); }

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 900;
  letter-spacing: 0.09em;
  line-height: 1.1;
  color: var(--fog);
}

.brand__line {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  line-height: 1.4;
  color: var(--volt);
}

.brand__tagline {
  display: none;
  font-size: 11px;
  letter-spacing: 0.01em;
  line-height: 1.5;
  color: var(--mist);
}

/* 7.3 主导航 */
.primary-nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 32px);
  margin-left: auto;
}

.primary-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(4px, 1.1vw, 22px);
}

.primary-nav__link {
  position: relative;
  display: inline-block;
  padding: 10px 2px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--mist);
  transition: color var(--dur-fast) var(--ease);
}

.primary-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 3px;
  height: 2px;
  background: var(--volt);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur-fast) var(--ease);
}

.primary-nav__link:hover,
.primary-nav__link:focus-visible { color: var(--fog); }

.primary-nav__link:hover::after,
.primary-nav__link:focus-visible::after { transform: scaleX(1); }

.primary-nav__link[aria-current="page"] { color: var(--volt); }

.primary-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--volt);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 7.4 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 10px 14px;
  border: 1px solid var(--line);
  color: var(--fog);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.nav-toggle:focus-visible { outline-offset: -4px; }

.nav-toggle:hover,
.nav-toggle[aria-expanded="true"] {
  color: var(--volt);
  border-color: rgba(201, 255, 63, 0.6);
}

.nav-toggle__bars {
  display: grid;
  gap: 4px;
  width: 18px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--volt);
  transition: transform var(--dur) var(--ease), opacity var(--dur-fast) var(--ease);
}

.nav-toggle__label { line-height: 1; }

.site-header[data-open] .nav-toggle__bars span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.site-header[data-open] .nav-toggle__bars span:nth-child(2) { opacity: 0; }

.site-header[data-open] .nav-toggle__bars span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* 7.5 滚动进度条 */
.scroll-progress {
  position: fixed;
  left: 0;
  bottom: 0;
  z-index: 80;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--volt), var(--blue) 58%, var(--violet));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 90ms linear;
  pointer-events: none;
}

/* 7.6 中等宽度收敛 */
@media (min-width: 1024px) and (max-width: 1279px) {
  .primary-nav__link {
    font-size: 13px;
    padding: 10px 1px;
  }

  .header-actions { gap: 6px; }

  .btn--sm {
    padding: 9px 11px;
    font-size: 12px;
    letter-spacing: 0.03em;
  }
}

@media (min-width: 1280px) {
  .brand__tagline { display: block; }
}

/* 7.7 移动端导航 */
@media (max-width: 1023px) {
  .nav-toggle { display: inline-flex; }

  .primary-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 60;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 8px var(--gutter) 24px;
    background: var(--ink-800);
    border-bottom: 1px solid var(--line);
    border-top: 1px solid var(--line);
    box-shadow: 0 26px 52px rgba(0, 0, 0, 0.55);
  }

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

  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .primary-nav__item + .primary-nav__item { border-top: 1px solid var(--line); }

  .primary-nav__link {
    display: block;
    padding: 15px 0;
    font-size: 16px;
    letter-spacing: 0.08em;
  }

  .primary-nav__link::after { display: none; }

  .primary-nav__link[aria-current="page"]::before {
    content: "";
    display: inline-block;
    width: 8px;
    height: 8px;
    margin-right: 10px;
    vertical-align: 2px;
    background: var(--volt);
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }

  .header-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    margin-top: 18px;
  }

  .header-actions .btn { width: 100%; }
}

@media (max-width: 639px) {
  .topbar__mail { display: none; }

  .topbar__note { font-size: 11px; }

  .brand__mark {
    width: 42px;
    height: 42px;
    font-size: 13px;
  }

  .brand__name { font-size: 15px; }
  .brand__line { font-size: 9.5px; letter-spacing: 0.1em; }
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumbs { padding-block: 20px 0; }

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.breadcrumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  color: var(--line);
}

.breadcrumbs__link {
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.breadcrumbs__link:hover,
.breadcrumbs__link:focus-visible {
  color: var(--volt);
  border-color: var(--volt);
}

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

/* ---------- 9. 面板与媒体容器 ---------- */
.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 30px);
  background: var(--ink-800);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.panel--cut-left {
  clip-path: polygon(16px 0, 100% 0, 100% 100%, 0 100%, 0 16px);
}

.panel--volt {
  border-color: rgba(201, 255, 63, 0.5);
  background-image: linear-gradient(180deg, rgba(201, 255, 63, 0.10), rgba(20, 26, 30, 0) 62%);
}

.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  isolation: isolate;
  background-color: var(--ink-800);
  background-image:
    repeating-linear-gradient(90deg, rgba(147, 164, 178, 0.12) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(0deg, rgba(147, 164, 178, 0.12) 0 1px, transparent 1px 48px),
    radial-gradient(78% 62% at 74% 8%, rgba(46, 123, 255, 0.22), transparent 72%),
    linear-gradient(135deg, var(--ink-800), var(--ink-900));
  border: 1px solid var(--line);
}

.media::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 64px;
  height: 3px;
  background: var(--volt);
  z-index: 2;
}

.media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: relative;
  z-index: 1;
}

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

.media--slant {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), calc(100% - 34px) 100%, 0 100%);
}

/* ---------- 10. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  line-height: 1;
  color: var(--mist);
  background: rgba(20, 26, 30, 0.7);
  border: 1px solid var(--line);
}

.tag--live {
  color: var(--orange);
  border-color: rgba(255, 106, 43, 0.45);
  background: rgba(255, 106, 43, 0.12);
}

.tag--next {
  color: var(--volt);
  border-color: rgba(201, 255, 63, 0.45);
  background: rgba(201, 255, 63, 0.12);
}

.tag--data {
  color: var(--blue);
  border-color: rgba(46, 123, 255, 0.45);
  background: rgba(46, 123, 255, 0.12);
}

.tag--violet {
  color: var(--violet);
  border-color: rgba(123, 97, 255, 0.45);
  background: rgba(123, 97, 255, 0.12);
}

/* ---------- 11. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 10vw, 140px);
  overflow: hidden;
  background-color: var(--ink-900);
  background-image: linear-gradient(180deg, rgba(27, 36, 18, 0.62), rgba(10, 13, 16, 0) 34%);
  border-top: 1px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    115deg,
    rgba(201, 255, 63, 0.055) 0 1px,
    transparent 1px 22px
  );
}

.footer-top {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.95fr);
  gap: clamp(32px, 5vw, 76px);
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: clamp(40px, 6vw, 84px) var(--gutter) clamp(30px, 4vw, 48px);
}

.footer-brand__name {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(30px, 4.6vw, 54px);
  font-weight: 900;
  letter-spacing: 0.01em;
  line-height: 0.98;
  color: var(--fog);
  border-bottom: 3px solid var(--volt);
  padding-bottom: 8px;
  transition: color var(--dur) var(--ease);
}

.footer-brand__name:hover,
.footer-brand__name:focus-visible { color: var(--volt); }

.footer-brand__summary {
  max-width: 42ch;
  margin-top: 20px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

.footer-brand .btn { margin-top: 26px; }

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 44px);
}

.footer-col__title {
  padding-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--volt);
  border-bottom: 1px solid var(--line);
}

.footer-col__list {
  display: grid;
  gap: 11px;
  margin-top: 16px;
}

.footer-col__link {
  display: inline-block;
  font-size: 14px;
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.footer-col__link:hover,
.footer-col__link:focus-visible {
  color: var(--fog);
  border-color: var(--volt);
}

.footer-contact {
  position: relative;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 0 var(--gutter) clamp(28px, 3.4vw, 44px);
}

.footer-contact__item {
  padding: 16px 18px;
  background: rgba(20, 26, 30, 0.78);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.footer-contact__label {
  display: block;
  margin-bottom: 7px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--blue);
}

.footer-contact__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  line-height: 1.6;
  color: var(--fog);
  overflow-wrap: anywhere;
}

.footer-contact__value--note {
  font-family: var(--font-body);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

.footer-bottom {
  position: relative;
  border-top: 1px solid var(--line);
  background: rgba(10, 13, 16, 0.6);
}

.footer-bottom__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 28px;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 20px var(--gutter) 30px;
}

.footer-bottom__legal {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

@media (max-width: 1023px) {
  .footer-top { grid-template-columns: minmax(0, 1fr); }

  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 639px) {
  .footer-cols { grid-template-columns: minmax(0, 1fr); }

  .footer-brand__summary { font-size: 13.5px; }

  .footer-contact { grid-template-columns: minmax(0, 1fr); }

  .footer-bottom__inner { justify-content: flex-start; }
}

/* ---------- 12. 无障碍与减弱动效 ---------- */
@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;
  }

  .scroll-progress { transition: none; }
}