/* ==========================================================================
   HTH赛事站 — 全站共享样式 /assets/site.css
   堆叠面板 · 玻璃卡片 · 竞技数据可视化
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  color-scheme: dark;
  scroll-behavior: smooth;
  background: #0A0E17;
}

body, h1, h2, h3, h4, h5, h6, p, ul, ol, figure, blockquote, dl, dd, pre { margin: 0; }
ul, ol { padding: 0; }
img, svg { max-width: 100%; display: block; }
button { font: inherit; color: inherit; border: 0; background: none; cursor: pointer; }
a { color: inherit; text-decoration: none; }

/* ---------- Variables ---------- */
:root {
  --deep-base: #0A0E17;
  --panel-base: #121929;
  --neon-green: #00FF66;
  --electric-blue: #00CCFF;
  --gold-accent: #FFD700;
  --text-primary: #E8ECF4;
  --text-secondary: #9AA8BC;
  --glass-bg: rgba(255, 255, 255, 0.08);
  --font-heading: Impact, 'Arial Black', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-data: 'JetBrains Mono', 'Courier New', monospace;
  --header-h: 72px;
  --content-max: 1320px;
  --radius-lg: 20px;
  --radius-md: 12px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Base ---------- */
body {
  min-height: 100vh;
  background:
    radial-gradient(1100px 620px at 85% -10%, rgba(0, 255, 102, 0.07), transparent 60%),
    radial-gradient(900px 520px at 8% 108%, rgba(0, 204, 255, 0.07), transparent 60%),
    #0A0E17;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--neon-green);
  color: #06130A;
}

:focus-visible {
  outline: 2px solid var(--electric-blue);
  outline-offset: 3px;
  border-radius: 4px;
}

h1, h2, h3, h4 {
  color: var(--text-primary);
  line-height: 1.15;
  font-weight: 700;
}

#main-content {
  scroll-margin-top: var(--header-h);
}
#main-content:focus {
  outline: none;
}

/* ---------- Skip Link ---------- */
.skip-link {
  position: fixed;
  top: -80px;
  left: 20px;
  z-index: 2000;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--neon-green);
  color: #06130A;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.04em;
  border-radius: 0 0 14px 14px;
  box-shadow: 0 10px 34px rgba(0, 255, 102, 0.35);
  transition: top 0.28s var(--ease), transform 0.28s var(--ease);
}
.skip-link:focus {
  top: 0;
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(10, 14, 23, 0.78);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  backdrop-filter: blur(18px) saturate(1.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-header__inner {
  position: relative;
  height: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.scroll-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--neon-green), var(--electric-blue), var(--gold-accent));
  transform: scaleX(0);
  transform-origin: 0 50%;
  box-shadow: 0 0 14px rgba(0, 255, 102, 0.6);
}

/* ---------- Brand ---------- */
.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.site-brand__mark {
  width: 12px;
  height: 34px;
  background: linear-gradient(180deg, var(--neon-green) 0%, var(--electric-blue) 100%);
  transform: skewX(-14deg);
  border-radius: 3px;
  box-shadow: 0 0 18px rgba(0, 255, 102, 0.45);
  flex-shrink: 0;
  transition: box-shadow 0.3s var(--ease);
}

.site-brand:hover .site-brand__mark {
  box-shadow: 0 0 28px rgba(0, 255, 102, 0.85);
}

.site-brand__text {
  font-family: var(--font-heading);
  font-size: 26px;
  line-height: 1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-primary);
  white-space: nowrap;
}

.site-brand--footer .site-brand__mark {
  height: 28px;
}

.site-brand--footer .site-brand__text {
  font-size: 22px;
}

/* ---------- Mobile Nav Toggle ---------- */
.nav-toggle {
  display: none;
  position: relative;
  width: 46px;
  height: 46px;
  padding: 12px;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  gap: 5px;
  background: var(--glass-bg);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 12px;
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.13);
  border-color: rgba(0, 255, 102, 0.45);
  box-shadow: 0 0 18px rgba(0, 255, 102, 0.16);
}

.nav-toggle__bar {
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.32s var(--ease), opacity 0.25s, background 0.2s;
}

.nav-toggle__label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

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

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

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

/* ---------- Main Nav ---------- */
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.site-nav__item {
  list-style: none;
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-secondary);
  border-radius: 10px;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), text-shadow 0.2s var(--ease);
}

.site-nav__link:hover {
  color: var(--neon-green);
  background: rgba(0, 255, 102, 0.07);
  text-shadow: 0 0 14px rgba(0, 255, 102, 0.35);
}

.site-nav__link[aria-current="page"] {
  color: var(--neon-green);
}

.site-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 4px;
  height: 2px;
  background: var(--neon-green);
  box-shadow: 0 0 10px rgba(0, 255, 102, 0.8);
}

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

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    z-index: 990;
    padding: 20px 24px 28px;
    background: rgba(10, 14, 23, 0.97);
    -webkit-backdrop-filter: blur(22px);
    backdrop-filter: blur(22px);
    border-bottom: 1px solid rgba(0, 255, 102, 0.22);
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.6);
    transform: translateY(-14px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.32s var(--ease), opacity 0.32s var(--ease), visibility 0.32s;
  }

  .site-nav[data-open] {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .site-nav__link {
    display: block;
    padding: 14px 18px;
    font-size: 16px;
    border-radius: 12px;
  }

  .site-nav__link[aria-current="page"] {
    background: rgba(0, 255, 102, 0.1);
  }
}

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  background: linear-gradient(180deg, #0A0E17 0%, #0D1426 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.site-footer::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--neon-green), var(--electric-blue), var(--gold-accent));
  opacity: 0.65;
}

.site-footer__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 72px 24px 48px;
  display: grid;
  grid-template-columns: 1.3fr 1fr 0.8fr;
  gap: 48px;
}

.site-footer__brand,
.site-footer__contacts,
.site-footer__links {
  min-width: 0;
}

.site-footer__tagline {
  margin-top: 20px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.site-footer__heading {
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--neon-green);
  margin-bottom: 18px;
}

.site-footer__text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.site-footer__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  list-style: none;
}

.site-footer__list a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color 0.2s, transform 0.2s var(--ease);
}

.site-footer__list a::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--electric-blue);
  transform: skewX(-16deg);
  flex-shrink: 0;
  transition: background 0.2s, transform 0.2s var(--ease), box-shadow 0.2s;
}

.site-footer__list a:hover {
  color: var(--neon-green);
  transform: translateX(4px);
}

.site-footer__list a:hover::before {
  background: var(--neon-green);
  box-shadow: 0 0 12px rgba(0, 255, 102, 0.7);
}

.site-footer__bottom {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.site-footer__copyright,
.site-footer__icp {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 48px 24px 32px;
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---------- Layout ---------- */
.site-main {
  min-height: 60vh;
  padding-top: var(--header-h);
}

.site-container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: 24px;
}

.site-section {
  padding-block: 88px;
}

.grid {
  display: grid;
  gap: 24px;
}

.grid--cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 1024px) {
  .grid--cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
  .site-section { padding-block: 56px; }

  .grid--cols-2,
  .grid--cols-3,
  .grid--cols-4 { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- Section Heading ---------- */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px 32px;
  margin-bottom: 44px;
}

.section-head__left {
  display: flex;
  align-items: baseline;
  gap: 20px;
}

.section-index {
  font-family: var(--font-data);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--neon-green);
}

.section-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(38px, 6vw, 72px);
  line-height: 0.95;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.section-title--gold { color: var(--gold-accent); }

.section-desc {
  max-width: 40em;
  margin-top: 14px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-secondary);
}

.lead {
  font-size: 20px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s, border-color 0.25s, color 0.25s;
  -webkit-tap-highlight-color: transparent;
}

.btn:active { transform: translateY(0) scale(0.98); }

.btn--primary {
  background: var(--neon-green);
  color: #06130A;
  box-shadow: 0 6px 28px rgba(0, 255, 102, 0.28);
}

.btn--primary:hover {
  transform: translateY(-3px);
  background: #35FF88;
  box-shadow: 0 12px 40px rgba(0, 255, 102, 0.45);
}

.btn--ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: rgba(0, 204, 255, 0.45);
}

.btn--ghost:hover {
  transform: translateY(-3px);
  color: var(--electric-blue);
  border-color: var(--electric-blue);
  background: rgba(0, 204, 255, 0.12);
}

/* ---------- Tags ---------- */
.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  white-space: nowrap;
  background: rgba(0, 204, 255, 0.08);
  border: 1px solid rgba(0, 204, 255, 0.28);
  color: var(--electric-blue);
}

.tag-pill--green {
  background: rgba(0, 255, 102, 0.08);
  border-color: rgba(0, 255, 102, 0.28);
  color: var(--neon-green);
}

.tag-pill--gold {
  background: rgba(255, 215, 0, 0.08);
  border-color: rgba(255, 215, 0, 0.3);
  color: var(--gold-accent);
}

/* ---------- Panel Cards ---------- */
.panel-card {
  position: relative;
  padding: 28px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.panel-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 46px;
  height: 46px;
  border-radius: 0 0 0 18px;
  background: linear-gradient(135deg, transparent 50%, rgba(0, 255, 102, 0.28) 50%);
  opacity: 0;
  transition: opacity 0.3s;
}

.panel-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 255, 102, 0.3);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.4);
}

.panel-card:hover::before { opacity: 1; }

.panel-card--blue:hover { border-color: rgba(0, 204, 255, 0.4); }

.panel-card--blue::before {
  background: linear-gradient(135deg, transparent 50%, rgba(0, 204, 255, 0.3) 50%);
}

/* ---------- Data Numbers ---------- */
.data-num {
  font-family: var(--font-data);
  font-size: 44px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--neon-green);
}

.data-num--blue { color: var(--electric-blue); }
.data-num--gold { color: var(--gold-accent); }

/* ---------- Background Numbers ---------- */
.bg-num {
  position: absolute;
  z-index: 0;
  font-family: var(--font-heading);
  font-size: clamp(140px, 24vw, 320px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.06);
  user-select: none;
  pointer-events: none;
}

.chapter-num {
  font-family: var(--font-heading);
  font-size: clamp(80px, 14vw, 180px);
  line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 2px rgba(0, 255, 102, 0.35);
  display: block;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  list-style: none;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

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

.breadcrumb__item + .breadcrumb__item::before {
  content: "→";
  color: rgba(255, 255, 255, 0.24);
}

.breadcrumb__link {
  color: var(--electric-blue);
  transition: color 0.2s;
}

.breadcrumb__link:hover {
  color: var(--neon-green);
  text-decoration: underline;
}

.breadcrumb__current {
  color: var(--text-primary);
}

/* ---------- Accordion ---------- */
.accordion {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.accordion__item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.accordion__trigger {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  padding: 22px 4px;
  font-size: 18px;
  font-weight: 700;
  text-align: left;
  color: var(--text-primary);
  transition: color 0.2s, padding-left 0.3s var(--ease);
}

.accordion__trigger:hover {
  color: var(--neon-green);
  padding-left: 10px;
}

.accordion__trigger::after {
  content: "+";
  flex-shrink: 0;
  font-size: 28px;
  font-weight: 400;
  line-height: 1;
  color: var(--neon-green);
  transition: transform 0.35s var(--ease), color 0.2s;
}

.accordion__item[data-open="true"] .accordion__trigger {
  color: var(--neon-green);
}

.accordion__item[data-open="true"] .accordion__trigger::after {
  transform: rotate(45deg);
  color: var(--electric-blue);
}

.accordion__panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease);
}

.accordion__content {
  padding: 0 4px 24px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
}

/* ---------- Media Frame ---------- */
.media-frame {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    radial-gradient(120% 120% at 20% 10%, rgba(0, 255, 102, 0.1), transparent 50%),
    radial-gradient(120% 120% at 80% 90%, rgba(0, 204, 255, 0.12), transparent 50%),
    var(--panel-base);
}

.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }

.media-frame__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 28px 28px;
}

.media-frame__placeholder::before {
  content: "";
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid rgba(0, 204, 255, 0.35);
  border-top-color: var(--neon-green);
  transform: skewX(-14deg);
}

/* ---------- Reveal Motion ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}

html.js [data-reveal="left"] { transform: translateX(-32px); }
html.js [data-reveal="right"] { transform: translateX(32px); }
html.js [data-reveal="scale"] { transform: scale(0.96); }

html.js [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- Reduced Motion ---------- */
@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;
  }

  html.js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .scroll-progress {
    display: none;
  }
}