/* ================================================================
   333体育 官方主站 · 共享样式系统
   未来竞技场 / 数据终端 / 玻璃面板 / 斜切边缘
   ================================================================ */

/* ---------- 0. 设计令牌 ---------- */
:root {
  --bg-void: #0B0F14;
  --bg-panel: #111820;
  --bg-elevated: #182130;
  --bg-glass: rgba(15, 23, 32, 0.72);
  --text-primary: #E8EDF2;
  --text-secondary: #9AA8B5;
  --accent-neon: #D0FF3E;
  --accent-volt: #FF9F0E;
  --data-line: #35D6C6;
  --danger-soft: #FF5C7A;

  --font-heading: 'Rajdhani', 'Oswald', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-numeric: 'DIN Alternate', 'Barlow Condensed', 'Arial Narrow', sans-serif;

  --fs-display: clamp(56px, 10vw, 112px);
  --fs-h1: clamp(36px, 6vw, 64px);
  --fs-h2: clamp(28px, 4.5vw, 48px);
  --fs-h3: clamp(20px, 2.5vw, 28px);
  --fs-body: clamp(15px, 1.2vw, 17px);
  --fs-small: 14px;
  --fs-note: 12px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  --container: 1280px;
  --container-narrow: 960px;
  --header-max: 1480px;
  --header-h: 64px;
  --status-h: 25px;
}

/* ---------- 1. Reset 与基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html {
  background-color: var(--bg-void);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  padding-top: calc(var(--header-h) + var(--status-h));
  background:
    linear-gradient(rgba(154, 168, 181, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(154, 168, 181, 0.028) 1px, transparent 1px),
    radial-gradient(1100px 600px at 88% -10%, rgba(208, 255, 62, 0.05), transparent 60%),
    radial-gradient(800px 520px at -10% 28%, rgba(53, 214, 198, 0.04), transparent 55%),
    var(--bg-void);
  background-size: 64px 64px, 64px 64px, auto, auto, auto;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: 'liga', 'tnum';
}

body.no-scroll { overflow: hidden; }

main { display: block; min-height: 60vh; }

img, picture, video, canvas, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; color: inherit; }
button { border: 0; background: none; cursor: pointer; }
a { color: inherit; }
ul, ol { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.02em;
  text-wrap: balance;
  color: var(--text-primary);
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }

p { max-width: 72ch; }

a, button {
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, opacity 0.2s ease, transform 0.2s ease, filter 0.2s ease;
}

::selection { background: var(--accent-neon); color: var(--bg-void); }

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

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-void); }
::-webkit-scrollbar-thumb { background: var(--bg-elevated); border: 2px solid var(--bg-void); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: rgba(208, 255, 62, 0.4); }

/* ---------- 2. 通用布局 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--space-5);
  padding-right: var(--space-5);
}
.container--narrow { max-width: var(--container-narrow); }

.page-section { padding: var(--space-8) 0; }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-5);
}
@media (max-width: 640px) {
  .grid-12 { grid-template-columns: 1fr; }
}

.rule {
  height: 1px;
  margin: var(--space-7) 0;
  border: 0;
  background: linear-gradient(90deg, rgba(53, 214, 198, 0.7), rgba(53, 214, 198, 0.08) 70%, transparent);
  opacity: 0.5;
}

/* ---------- 3. 章节表达 ---------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--fs-note);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-neon);
}
.section-label::before {
  content: '';
  display: inline-block;
  width: 28px;
  height: 2px;
  background: var(--accent-neon);
}

.section-title {
  margin-bottom: var(--space-4);
  font-size: var(--fs-h2);
}

.section-lead {
  max-width: 64ch;
  color: var(--text-secondary);
}

/* ---------- 4. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: var(--space-4) 0;
  border-bottom: 1px solid rgba(154, 168, 181, 0.12);
  font-family: var(--font-heading);
  font-size: var(--fs-note);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.breadcrumb a { text-decoration: none; color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--accent-neon); }
.breadcrumb a[aria-current="page"] { color: var(--text-primary); }
.crumb-sep { opacity: 0.5; }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.6rem;
  border: 1px solid rgba(154, 168, 181, 0.3);
  border-radius: 0;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
}
.btn:hover { border-color: var(--accent-neon); color: var(--accent-neon); }

.btn--primary {
  border-color: var(--accent-neon);
  background: var(--accent-neon);
  color: var(--bg-void);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}
.btn--primary:hover { filter: brightness(1.1); color: var(--bg-void); }

.btn--ghost { border-color: rgba(154, 168, 181, 0.28); color: var(--text-secondary); }
.btn--ghost:hover { border-color: var(--data-line); color: var(--data-line); }

.btn--compact { padding: 0.5rem 1.1rem; font-size: 14px; }

/* ---------- 6. 数据组件 ---------- */
.data-card {
  position: relative;
  padding: var(--space-5);
  border: 1px solid rgba(154, 168, 181, 0.12);
  border-radius: 2px;
  background: var(--bg-panel);
}
.data-card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  width: 64px;
  height: 3px;
  background: var(--accent-neon);
}
.data-card--highlight { border-color: rgba(208, 255, 62, 0.35); }

.data-label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-heading);
  font-size: var(--fs-note);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.data-value {
  display: block;
  font-family: var(--font-numeric);
  font-size: clamp(38px, 5vw, 64px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--text-primary);
}
.data-value--accent { color: var(--accent-neon); }
.data-value--voltage { color: var(--accent-volt); }

/* ---------- 7. 状态标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid rgba(154, 168, 181, 0.3);
  border-radius: 2px;
  font-family: var(--font-heading);
  font-size: var(--fs-note);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--text-secondary);
}
.tag--live {
  border-color: rgba(208, 255, 62, 0.45);
  background: rgba(208, 255, 62, 0.08);
  color: var(--accent-neon);
}
.tag--update {
  border-color: rgba(255, 159, 14, 0.45);
  background: rgba(255, 159, 14, 0.08);
  color: var(--accent-volt);
}
.tag--warn {
  border-color: rgba(255, 92, 122, 0.45);
  background: rgba(255, 92, 122, 0.08);
  color: var(--danger-soft);
}

/* ---------- 8. 图片容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-elevated), var(--bg-panel));
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}
.media-frame img,
.media-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.08);
}
.media-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg, transparent 68%, rgba(208, 255, 62, 0.12));
  pointer-events: none;
}
.media-frame--ratio-wide { aspect-ratio: 16 / 8; }
.media-frame--ratio-portrait { aspect-ratio: 4 / 5; }
.media-frame--ratio-video { aspect-ratio: 16 / 10; }
@media (prefers-reduced-motion: no-preference) {
  .media-frame { transition: clip-path 0.3s ease; }
  .media-frame:hover { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); }
}

/* ---------- 9. 滚动显现 ---------- */
.reveal,
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
}
@media (prefers-reduced-motion: no-preference) {
  .reveal,
  [data-reveal] {
    transition: opacity 0.45s ease, transform 0.45s ease;
  }
}
.reveal.is-visible,
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal,
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 10. 头部 ---------- */
.skip-link {
  position: fixed;
  top: var(--space-2);
  left: var(--space-5);
  z-index: 200;
  padding: 10px 18px;
  background: var(--accent-neon);
  color: var(--bg-void);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  transform: translateY(calc(-100% - 24px));
  transition: transform 0.2s ease;
}
.skip-link:focus-visible {
  transform: translateY(0);
  outline-offset: 0;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(154, 168, 181, 0.14);
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  backdrop-filter: blur(16px) saturate(1.2);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.35);
  color: var(--text-primary);
}

.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 105;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-neon), var(--data-line));
  pointer-events: none;
}

.header-container {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: var(--space-4);
  max-width: var(--header-max);
  height: var(--header-h);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

/* 品牌 */
.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--text-primary);
}
.brand-mark {
  position: relative;
  font-family: var(--font-heading);
  font-size: 34px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--accent-neon);
}
.brand-mark::after {
  content: '_';
  margin-left: 2px;
  color: var(--text-secondary);
  animation: cursor-blink 1.2s steps(1) infinite;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-name {
  font-family: var(--font-heading);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text-primary);
}
.brand-signature {
  margin-top: 2px;
  font-size: var(--fs-note);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

/* 导航 */
.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-bottom: 2px solid transparent;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
  text-decoration: none;
  color: var(--text-secondary);
}
.nav-link:hover { color: var(--text-primary); }
.nav-link:hover .nav-index { color: var(--accent-neon); }
.nav-link[aria-current="page"] {
  border-bottom-color: var(--accent-neon);
  color: var(--text-primary);
}
.nav-link[aria-current="page"] .nav-index { color: var(--accent-neon); }

.nav-index {
  font-family: var(--font-numeric);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--text-secondary);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-left: 14px;
  padding: 10px 18px;
  background: var(--accent-neon);
  color: var(--bg-void);
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}
.nav-cta:hover { filter: brightness(1.12); color: var(--bg-void); }

.cta-arrow { font-weight: 800; }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  align-self: center;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(154, 168, 181, 0.28);
  background: rgba(11, 15, 20, 0.4);
  color: var(--text-primary);
}
.nav-toggle:hover { border-color: var(--accent-neon); color: var(--accent-neon); }

.nav-toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.site-header[data-open="true"] .nav-toggle-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-header[data-open="true"] .nav-toggle-line:nth-child(2) { opacity: 0; }
.site-header[data-open="true"] .nav-toggle-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 状态条 */
.header-status {
  height: var(--status-h);
  overflow: hidden;
  border-top: 1px solid rgba(154, 168, 181, 0.1);
  background: rgba(11, 15, 20, 0.35);
}
.header-status-inner {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  height: 100%;
  max-width: var(--header-max);
  margin: 0 auto;
  padding: 0 var(--space-5);
  font-family: var(--font-heading);
  font-size: var(--fs-note);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--text-secondary);
}
.status-live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-neon);
}
.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-neon);
  box-shadow: 0 0 10px var(--accent-neon);
  animation: pulse-dot 1.6s ease-in-out infinite;
}
.status-copy {
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- 11. 移动端导航 ---------- */
@media (max-width: 1140px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    top: calc(var(--header-h) + var(--status-h));
    left: 0;
    right: 0;
    z-index: 99;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: var(--space-2);
    height: calc(100vh - var(--header-h) - var(--status-h));
    height: calc(100dvh - var(--header-h) - var(--status-h));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: var(--space-5) var(--space-5) var(--space-7);
    background: rgba(11, 15, 20, 0.97);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.28s ease, visibility 0.28s ease;
  }

  .site-header[data-open="true"] .site-nav {
    transform: translateX(0);
    visibility: visible;
  }

  .nav-link {
    align-items: center;
    padding: 14px 8px;
    border-bottom: 1px solid rgba(154, 168, 181, 0.12);
    font-size: 20px;
  }
  .nav-link[aria-current="page"] {
    border-bottom-color: var(--accent-neon);
    background: rgba(208, 255, 62, 0.06);
  }
  .nav-index {
    width: 32px;
    font-size: 12px;
  }

  .nav-cta {
    justify-content: center;
    margin: var(--space-5) 0 0;
    padding: 14px 20px;
    font-size: 17px;
  }
}

@media (max-width: 720px) {
  .status-copy { display: none; }
}

/* ---------- 12. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: var(--space-9);
  border-top: 1px solid rgba(154, 168, 181, 0.14);
  background: var(--bg-panel);
}
.site-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-neon) 0%, var(--accent-neon) 96px, rgba(208, 255, 62, 0.25) 260px, transparent 520px);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 0.7fr);
  gap: var(--space-7);
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-7) var(--space-5) var(--space-6);
}

.footer-section { min-width: 0; }
.footer-section--brand {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-4);
}

.footer-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: var(--space-4);
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-primary);
}
.footer-title::after {
  content: '';
  display: block;
  width: 32px;
  height: 2px;
  background: var(--accent-neon);
  opacity: 0.6;
}

.footer-trust {
  max-width: 44ch;
  margin-top: var(--space-4);
  font-size: var(--fs-small);
  line-height: 1.9;
  color: var(--text-secondary);
}

.contact-list {
  display: flex;
  flex-direction: column;
}
.contact-row {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: var(--space-3);
  padding: 8px 0;
  border-bottom: 1px dashed rgba(154, 168, 181, 0.18);
  font-size: var(--fs-small);
}
.contact-key {
  font-family: var(--font-heading);
  font-size: var(--fs-note);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.contact-value {
  color: var(--text-primary);
  word-break: break-all;
}

.footer-link-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--fs-small);
}
.footer-link::before {
  content: '→';
  color: var(--accent-neon);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.footer-link:hover { color: var(--text-primary); }
.footer-link:hover::before { opacity: 1; transform: translateX(0); }

.footer-bottom {
  border-top: 1px solid rgba(154, 168, 181, 0.1);
  background: var(--bg-void);
  padding: var(--space-4) 0;
}
.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2) var(--space-6);
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-5);
  font-size: var(--fs-note);
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}
.footer-copy,
.footer-icp,
.footer-address {
  color: var(--text-secondary);
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }
}

/* ---------- 13. 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(154, 168, 181, 0.3);
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-size: var(--fs-note);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}
.to-top:hover,
.to-top:focus-visible {
  border-color: var(--accent-neon);
  color: var(--accent-neon);
}
.to-top[hidden] { display: none; }

/* ---------- 14. 动效与减弱动态 ---------- */
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}
@keyframes cursor-blink {
  0%, 45% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .status-dot,
  .brand-mark::after { animation: none !important; }
  * { transition-duration: 0.01ms !important; }
}

/* ---------- 15. 响应式尺寸整理 ---------- */
@media (max-width: 1140px) {
  :root {
    --header-h: 56px;
    --status-h: 23px;
  }
}