/* ==========================================================
   K1体育 · /assets/site.css
   赛事数据终端 / 深空蓝×电光橙×荧光绿
   ========================================================== */

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background: var(--c-primary);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 700;
}

b,
strong {
  font-weight: 700;
}

/* ---------- Variables ---------- */
:root {
  --c-primary: #0B1B3D;
  --c-secondary-bg: #101F3C;
  --c-accent: #FF6A00;
  --c-neon: #39FF14;
  --c-data-blue: #4A90E2;
  --c-warning: #F5A623;
  --c-text: #E6E6E6;
  --c-text-dim: #9AA7BD;
  --c-border: #1E3A5F;
  --c-light: #F0F0F0;
  --font-heading: "Oswald", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Roboto Mono", "SF Mono", "Cascadia Mono", "Consolas", "Noto Sans SC", monospace;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;
  --container-w: 1320px;
  --header-height: 76px;
  --ticker-height: 34px;
  --radius: 2px;
  --shadow-1: 0 4px 24px rgba(0, 0, 0, 0.35);
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* ---------- Accessibility ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: -48px;
  left: 16px;
  z-index: 1000;
  padding: 10px 20px;
  background: var(--c-neon);
  color: var(--c-primary);
  font-weight: 700;
  font-family: var(--font-heading);
  letter-spacing: 1px;
  border-radius: 0;
  transition: top var(--transition-fast);
}

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

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

#main-content {
  scroll-margin-top: calc(var(--ticker-height) + var(--header-height));
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
}

.ticker {
  position: relative;
  height: var(--ticker-height);
  background: var(--c-secondary-bg);
  border-bottom: 1px solid var(--c-border);
  overflow: hidden;
}

.ticker::before {
  content: "LIVE";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  padding: 0 14px 0 16px;
  background: var(--c-accent);
  color: var(--c-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 2px;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.ticker-track {
  display: flex;
  width: max-content;
  animation: ticker-move 36s linear infinite;
}

.ticker:hover .ticker-track {
  animation-play-state: paused;
}

.ticker-group {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 48px;
  padding-right: 48px;
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--c-text);
  white-space: nowrap;
  letter-spacing: 0.5px;
}

.ticker-item b {
  color: var(--c-accent);
  font-weight: 700;
  letter-spacing: 1px;
  margin-right: 2px;
}

.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-neon);
  box-shadow: 0 0 6px rgba(57, 255, 20, 0.6);
  display: inline-block;
  flex-shrink: 0;
  animation: live-pulse 2s ease-in-out infinite;
}

@keyframes live-pulse {
  0%, 100% {
    box-shadow: 0 0 4px rgba(57, 255, 20, 0.4);
  }
  50% {
    box-shadow: 0 0 14px rgba(57, 255, 20, 0.9);
  }
}

@keyframes ticker-move {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.header-main {
  position: relative;
  background: var(--c-secondary-bg);
  border-bottom: 1px solid var(--c-border);
}

.header-main::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(
    0deg,
    rgba(255, 255, 255, 0.015) 0px,
    transparent 1px,
    transparent 3px
  );
  pointer-events: none;
}

.header-frame {
  max-width: var(--container-w);
  margin-inline: auto;
  padding: 0 24px;
  height: var(--header-height);
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  width: 46px;
  height: 46px;
  background: var(--c-accent);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 20px;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 78%, 70% 100%, 0 100%);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-text strong {
  font-family: var(--font-heading);
  font-size: 22px;
  letter-spacing: 1px;
  color: var(--c-text);
}

.brand-text small {
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--c-text-dim);
}

.header-clock {
  font-size: 13px;
  color: var(--c-neon);
  letter-spacing: 2px;
  padding: 6px 12px;
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-neon);
  line-height: 1;
  white-space: nowrap;
}

.version-tag {
  font-size: 11px;
  padding: 4px 10px;
  background: rgba(245, 166, 35, 0.12);
  color: var(--c-warning);
  border: 1px solid rgba(245, 166, 35, 0.4);
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.version-tag::before {
  content: "↟";
  font-size: 12px;
}

/* ---------- Navigation ---------- */
.main-nav {
  margin-left: auto;
}

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

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 10px 14px;
  color: var(--c-text-dim);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--c-accent);
  transform: translateX(-50%);
  transition: width var(--transition-normal);
}

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

.nav-link:hover::after {
  width: 50%;
}

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

.nav-link[aria-current="page"]::after {
  width: 100%;
}

.nav-ico {
  font-size: 16px;
  line-height: 1;
  transition: transform var(--transition-fast);
}

.nav-link:hover .nav-ico {
  transform: translateY(-3px);
}

.nav-txt {
  font-size: 11px;
}

/* ---------- Mobile Nav Toggle ---------- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 1px solid var(--c-border);
  color: var(--c-text);
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Scroll Progress ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--c-accent), var(--c-neon));
  z-index: 1002;
  pointer-events: none;
}

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  background: #070F24;
  margin-top: var(--space-6);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-accent) 0%, transparent 35%, transparent 65%, var(--c-neon) 100%);
}

.footer-frame {
  max-width: var(--container-w);
  margin-inline: auto;
  padding: var(--space-6) 24px 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 28px;
  color: var(--c-accent);
  letter-spacing: 2px;
  line-height: 1;
}

.footer-slogan {
  color: var(--c-text-dim);
  font-size: 14px;
  margin-top: 12px;
}

.footer-tip {
  color: var(--c-text-dim);
  font-size: 12px;
  margin-top: 16px;
  padding: 10px 14px;
  border-left: 3px solid var(--c-neon);
  background: rgba(57, 255, 20, 0.05);
  line-height: 1.6;
}

.footer-nav {
  display: flex;
  flex-direction: column;
}

.footer-meta {
  display: flex;
  flex-direction: column;
}

.footer-title {
  font-size: 14px;
  color: var(--c-accent);
  letter-spacing: 2px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  position: relative;
}

.footer-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--c-accent);
  transform: skewX(-20deg);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--c-text-dim);
  font-size: 14px;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-links a:hover {
  color: var(--c-text);
  padding-left: 8px;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: var(--c-text-dim);
  font-size: 13px;
  line-height: 1.5;
}

.footer-contact li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.contact-label {
  display: inline-block;
  font-size: 11px;
  color: var(--c-neon);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.footer-sep {
  height: 1px;
  background: linear-gradient(90deg, var(--c-border), transparent);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 24px;
  padding: 20px 0 28px;
  font-size: 12px;
  color: var(--c-text-dim);
}

.footer-copy {
  margin-right: auto;
}

.footer-icp {
  color: var(--c-text-dim);
}

.footer-legal {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-legal a {
  color: var(--c-text-dim);
  transition: color var(--transition-fast);
}

.footer-legal a:hover {
  color: var(--c-accent);
}

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

/* ---------- Back to Top ---------- */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-secondary-bg);
  color: var(--c-accent);
  border: 1px solid var(--c-border);
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--transition-normal), visibility var(--transition-normal), transform var(--transition-normal), border-color var(--transition-fast);
}

.back-top:hover {
  border-color: var(--c-accent);
}

.back-top-arrow {
  font-size: 20px;
  line-height: 1;
}

.back-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ---------- Shared Components ---------- */
.container {
  width: min(1280px, 100% - 48px);
  margin-inline: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 26px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
}

.btn-primary {
  background: var(--c-accent);
  color: var(--c-primary);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 100%, 0 100%);
}

.btn-primary:hover {
  background: #FF8233;
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--c-text);
  border: 1px solid var(--c-border);
}

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

.section-head {
  margin-bottom: var(--space-4);
}

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--c-accent);
  color: var(--c-primary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 32px;
  margin-top: 12px;
  position: relative;
  padding-left: 18px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.15em;
  bottom: 0.15em;
  width: 4px;
  background: var(--c-accent);
  transform: skewX(-12deg);
}

.corner-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: var(--c-accent);
  color: var(--c-primary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.card {
  position: relative;
  background: var(--c-secondary-bg);
  border: 1px solid var(--c-border);
  padding: 24px;
}

.card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 26px;
  height: 26px;
  border-top: 3px solid var(--c-accent);
  border-left: 3px solid var(--c-accent);
}

.data-bar {
  height: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--c-border);
  overflow: hidden;
}

.data-bar-fill {
  height: 100%;
  width: 50%;
  background: linear-gradient(90deg, var(--c-accent), var(--c-neon));
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
  font-size: 13px;
  color: var(--c-text-dim);
}

.breadcrumb a {
  color: var(--c-text-dim);
  transition: color var(--transition-fast);
}

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

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

.img-holder {
  position: relative;
  background: linear-gradient(135deg, var(--c-secondary-bg) 0%, #0B1120 100%);
  border: 1px solid var(--c-border);
  aspect-ratio: 16 / 9;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.img-holder::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, transparent 20%, rgba(255, 106, 0, 0.05) 40%, transparent 60%),
    linear-gradient(160deg, rgba(74, 144, 226, 0.12) 0%, transparent 60%);
  pointer-events: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  :root {
    --header-height: 64px;
  }

  .header-frame {
    position: relative;
    gap: 16px;
  }

  .header-clock,
  .version-tag {
    display: none !important;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-left: 0;
    display: none;
    background: var(--c-secondary-bg);
    border-top: 1px solid var(--c-border);
    box-shadow: var(--shadow-1);
  }

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

  .nav-list {
    flex-direction: column;
    gap: 0;
    padding: 8px 16px 16px;
  }

  .nav-link {
    flex-direction: row;
    justify-content: flex-start;
    gap: 14px;
    padding: 12px 16px;
    border-left: 3px solid transparent;
  }

  .nav-link::after {
    display: none;
  }

  .nav-link[aria-current="page"] {
    border-left-color: var(--c-accent);
    background: rgba(255, 106, 0, 0.06);
  }

  .nav-ico {
    width: 22px;
    text-align: center;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 560px) {
  :root {
    --header-height: 58px;
    --ticker-height: 30px;
  }

  .header-frame {
    padding: 0 16px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    font-size: 17px;
  }

  .brand-text strong {
    font-size: 18px;
  }

  .footer-frame {
    padding: 40px 16px 0;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px 16px;
  }

  .footer-copy {
    margin-right: 0;
  }

  .back-top {
    right: 16px;
    bottom: 16px;
  }
}

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

  .ticker-track,
  .live-dot {
    animation: none;
  }

  .ticker:hover .ticker-track {
    animation-play-state: initial;
  }

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