/* ==========================================================================
   优德赛场 · 共享样式表  /assets/site.css
   夜间赛场数据回放室：深墨蓝底 + 荧光青刻度 + 亮橙焦点 + 玫红费用标签
   ========================================================================== */

/* ---------- 1. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

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

/* ---------- 2. 设计令牌 ---------- */
:root {
  --ink-1000: #050B14;
  --ink-900: #0A1626;
  --ink-800: #122139;
  --ink-700: #1B2E4A;
  --cyan-400: #35E6D2;
  --cyan-200: #9BF3EA;
  --orange-500: #FF8A3D;
  --rose-500: #FF4D7E;
  --text-100: #EAF2FA;
  --text-400: #94A9BF;
  --glass-06: rgba(255, 255, 255, 0.06);
  --glass-10: rgba(255, 255, 255, 0.10);
  --line-soft: rgba(148, 169, 191, 0.16);
  --state-open: #6FE39B;

  --font-head: "Oswald", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --font-num: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", system-ui, -apple-system, "Segoe UI", sans-serif;

  --shell: 1520px;
  --rail-w: 288px;
  --gut: clamp(16px, 3.2vw, 48px);
  --masthead-h: 76px;
  --radius: 2px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 页面底色与排版基线 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink-900);
  background-image:
    radial-gradient(120% 78% at 84% 0%, rgba(53, 230, 210, 0.10), transparent 58%),
    radial-gradient(92% 62% at 4% 100%, rgba(255, 138, 61, 0.06), transparent 60%);
  background-repeat: no-repeat;
  color: var(--text-100);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.9;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#main-content {
  display: block;
  outline: none;
  scroll-margin-top: calc(var(--masthead-h) + 28px);
}

/* ---------- 4. 焦点可见性 ---------- */
:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 3px;
  border-radius: 1px;
}

/* ---------- 5. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 300;
  padding: 10px 18px;
  background: var(--cyan-400);
  color: #04211F;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  border-radius: var(--radius);
  transform: translateY(-240%);
  transition: transform 0.18s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 6. 头部：页面外框即导航 ---------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 80;
  background: linear-gradient(180deg, rgba(8, 18, 32, 0.94), rgba(10, 22, 38, 0.78));
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--ink-700);
  color: var(--text-100);
}

.masthead__scale {
  position: relative;
  height: 6px;
  overflow: hidden;
  background-image: repeating-linear-gradient(90deg, var(--ink-700) 0 1px, transparent 1px 16px);
  border-bottom: 1px solid rgba(53, 230, 210, 0.14);
}
.masthead__scale::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 100%;
  transform-origin: 0 50%;
  transform: scaleX(var(--sp, 0.08));
  background: linear-gradient(90deg, var(--cyan-400), var(--orange-500));
  opacity: 0.9;
  transition: transform 0.14s linear;
}

.masthead__inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gut);
  min-height: var(--masthead-h);
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 32px);
}

.masthead__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  margin-left: 4px;
}

/* 品牌署名 */
.brandmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  padding: 6px 0;
}
.brandmark__glyph {
  position: relative;
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  border: 1px solid var(--cyan-400);
}
.brandmark__glyph::before {
  content: "";
  position: absolute;
  inset: 5px;
  background: var(--cyan-400);
  opacity: 0.85;
}
.brandmark__glyph::after {
  content: "";
  position: absolute;
  top: -5px;
  left: -5px;
  width: 6px;
  height: 6px;
  background: var(--orange-500);
}
.brandmark__text { display: flex; flex-direction: column; line-height: 1.15; }
.brandmark__name {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--text-100);
}
.brandmark__sub {
  margin-top: 3px;
  font-family: var(--font-num);
  font-size: 10px;
  letter-spacing: 0.32em;
  color: var(--text-400);
}

/* 主导航 */
.nav-rail { margin-left: auto; min-width: 0; }
.nav-rail__list {
  display: flex;
  align-items: center;
  gap: clamp(2px, 0.9vw, 16px);
}
.nav-rail__link {
  position: relative;
  display: inline-block;
  padding: 10px 12px;
  font-size: 14px;
  letter-spacing: 0.05em;
  color: var(--text-400);
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}
.nav-rail__link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 1px;
  background: var(--cyan-400);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.22s var(--ease), background-color 0.22s var(--ease);
}
.nav-rail__link:hover { color: var(--text-100); }
.nav-rail__link:hover::after { transform: scaleX(1); }
.nav-rail__link[aria-current="page"] { color: var(--text-100); font-weight: 500; }
.nav-rail__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--orange-500);
}

/* 移动端栏目开关 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 1px solid var(--ink-700);
  background: var(--glass-06);
  color: var(--text-100);
  font-family: var(--font-head);
  font-size: 13px;
  letter-spacing: 0.14em;
  border-radius: var(--radius);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.nav-toggle:hover { border-color: var(--cyan-400); color: var(--cyan-200); }
.nav-toggle__bars { position: relative; width: 16px; height: 10px; flex: 0 0 auto; }
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--cyan-400);
  transition: transform 0.24s var(--ease);
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(4.2px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-4.2px) rotate(-45deg); }
.nav-toggle__label { line-height: 1; }

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1;
  cursor: pointer;
  text-align: center;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease),
              border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.btn--compact { padding: 9px 16px; font-size: 13px; }
.btn--primary { background: var(--orange-500); color: #170A02; }
.btn--primary:hover { background: #FFA76B; transform: translateY(-1px); }
.btn--ghost {
  background: var(--glass-06);
  border-color: var(--ink-700);
  color: var(--text-100);
}
.btn--ghost:hover { border-color: var(--cyan-400); color: var(--cyan-200); }

/* ---------- 8. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--ink-700);
  border-radius: 999px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  white-space: nowrap;
}
.tag--open {
  color: var(--state-open);
  border-color: rgba(111, 227, 155, 0.45);
  background: rgba(111, 227, 155, 0.08);
}
.tag--fee {
  color: var(--rose-500);
  border-color: rgba(255, 77, 126, 0.42);
  background: rgba(255, 77, 126, 0.08);
}
.tag--data {
  color: var(--cyan-400);
  border-color: rgba(53, 230, 210, 0.42);
  background: rgba(53, 230, 210, 0.08);
}
.tag--muted { color: var(--text-400); border-color: var(--ink-700); background: transparent; }

/* ---------- 9. 布局容器与网格 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gut);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 32px);
}

.section { padding-block: clamp(48px, 7vw, 110px); }

.section__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 18px;
}
.section__index {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--orange-500);
}

/* ---------- 10. 版式组件 ---------- */
.h-hero {
  font-family: var(--font-head);
  font-size: clamp(44px, 8vw, 96px);
  font-weight: 300;
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--text-100);
}
.h-section {
  font-family: var(--font-head);
  font-size: clamp(24px, 3.4vw, 44px);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--text-100);
}
.h-sub {
  font-family: var(--font-head);
  font-size: clamp(19px, 2.2vw, 28px);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--text-100);
}

.lbl {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.18em;
  line-height: 1.6;
  color: var(--text-400);
}

.num {
  font-family: var(--font-num);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: var(--text-100);
}
.num--xl {
  display: block;
  font-size: clamp(56px, 9vw, 88px);
  line-height: 1;
}

.prose {
  max-width: 38em;
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-400);
}
.prose p + p { margin-top: 1.1em; }
.prose strong { color: var(--text-100); font-weight: 600; }
.prose a {
  color: var(--cyan-400);
  border-bottom: 1px solid rgba(53, 230, 210, 0.45);
}
.prose a:hover { color: var(--cyan-200); }
.prose h3 {
  margin-top: 1.6em;
  margin-bottom: 0.5em;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-100);
}
.prose ul { margin-top: 0.8em; }
.prose li {
  position: relative;
  padding-left: 18px;
  margin-top: 0.4em;
}
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 8px;
  height: 1px;
  background: var(--cyan-400);
}

/* ---------- 11. 面包屑 ---------- */
.crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-400);
}
.crumb__item a:hover { color: var(--cyan-400); }
.crumb__item[aria-current="page"] { color: var(--text-100); }
.crumb__sep { color: var(--ink-700); }

/* ---------- 12. 内容面板 ---------- */
.panel {
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius);
}
.glass {
  background: var(--glass-06);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

/* ---------- 13. 响应式图片容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: var(--ink-800);
  background-image:
    linear-gradient(180deg, rgba(53, 230, 210, 0.06), transparent 60%),
    repeating-linear-gradient(90deg, rgba(27, 46, 74, 0.9) 0 1px, transparent 1px 24px);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius);
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame > img,
.media-frame > picture,
.media-frame > video,
.media-frame > svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 14. 左侧刻度轨 ---------- */
.rail {
  position: sticky;
  top: calc(var(--masthead-h) + 28px);
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: 20px;
  border-left: 1px solid var(--ink-700);
  max-height: calc(100vh - var(--masthead-h) - 56px);
  overflow-y: auto;
}
.rail__label {
  margin-bottom: 14px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--text-400);
}
.rail__link {
  position: relative;
  display: block;
  padding: 9px 0;
  font-size: 14px;
  letter-spacing: 0.03em;
  color: var(--text-400);
  transition: color 0.2s var(--ease);
}
.rail__link::before {
  content: "";
  position: absolute;
  top: 50%;
  left: -21px;
  width: 9px;
  height: 1px;
  background: var(--ink-700);
  transform: translateY(-50%);
  transition: width 0.2s var(--ease), background-color 0.2s var(--ease);
}
.rail__link:hover { color: var(--text-100); }
.rail__link:hover::before { width: 15px; background: var(--cyan-400); }
.rail__link[aria-current="true"] { color: var(--cyan-400); }
.rail__link[aria-current="true"]::before { width: 15px; background: var(--cyan-400); }

/* ---------- 15. 分段切换器 ---------- */
.seg {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 2px;
  padding: 3px;
  background: var(--glass-06);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius);
}
.seg__btn {
  padding: 9px 16px;
  border-radius: 1px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-400);
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease);
}
.seg__btn:hover { color: var(--text-100); }
.seg__btn[aria-selected="true"] {
  background: var(--cyan-400);
  color: #04211F;
  font-weight: 700;
}
.seg__panel { margin-top: 24px; }
.seg__panel[hidden] { display: none; }

/* ---------- 16. 显现协议 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.32s var(--ease), transform 0.32s var(--ease);
}
[data-reveal][data-revealed] { opacity: 1; transform: none; }

/* ---------- 17. 页脚 ---------- */
.site-foot {
  position: relative;
  margin-top: clamp(64px, 10vw, 140px);
  padding: clamp(40px, 6vw, 76px) 0 30px;
  background: var(--ink-1000);
  border-top: 1px solid var(--ink-700);
  color: var(--text-400);
  font-size: 14px;
}
.site-foot__scan {
  position: absolute;
  inset: 0 0 auto 0;
  height: 8px;
  background-image: repeating-linear-gradient(90deg, var(--ink-700) 0 1px, transparent 1px 20px);
  opacity: 0.75;
}

.site-foot__inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gut);
  display: grid;
  grid-template-columns: minmax(230px, 1.25fr) repeat(3, minmax(140px, 0.75fr));
  gap: clamp(24px, 3vw, 52px);
}

.site-foot__name {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--text-100);
}
.site-foot__note {
  margin-top: 14px;
  max-width: 32ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-400);
}
.site-foot__brand .btn { margin-top: 22px; }

.site-foot__title {
  margin-bottom: 16px;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--cyan-400);
}
.site-foot__list { display: flex; flex-direction: column; gap: 10px; }
.site-foot__list a {
  color: var(--text-400);
  transition: color 0.2s var(--ease);
}
.site-foot__list a:hover { color: var(--text-100); }

.site-foot__meta {
  max-width: var(--shell);
  margin: clamp(34px, 4vw, 52px) auto 0;
  padding: 22px var(--gut) 0;
  border-top: 1px solid var(--ink-700);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 30px;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--text-400);
}

.site-foot__legal {
  max-width: var(--shell);
  margin: 14px auto 0;
  padding: 0 var(--gut);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(148, 169, 191, 0.72);
}

/* ---------- 18. 平板断点 ---------- */
@media (max-width: 1180px) {
  .nav-rail__link { padding: 10px 8px; font-size: 13px; }
  .nav-rail__link::after { left: 8px; right: 8px; }
}

@media (max-width: 1024px) {
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .rail {
    position: static;
    max-height: none;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px 22px;
    border-left: 0;
    border-bottom: 1px solid var(--ink-700);
    padding: 0 0 14px;
  }
  .rail__link { padding: 4px 0; }
  .rail__link::before { display: none; }
}

/* ---------- 19. 移动端断点 ---------- */
@media (max-width: 900px) {
  :root { --masthead-h: 64px; }

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

  .nav-rail {
    position: fixed;
    left: 0;
    right: 0;
    top: auto;
    bottom: 0;
    z-index: 120;
    max-height: 86vh;
    overflow-y: auto;
    margin-left: 0;
    padding: 26px var(--gut) calc(26px + env(safe-area-inset-bottom, 0px));
    background: rgba(5, 11, 20, 0.97);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
    backdrop-filter: blur(18px) saturate(140%);
    border-top: 1px solid var(--ink-700);
    box-shadow: 0 -40px 90px rgba(5, 11, 20, 0.92);
    transform: translateY(112%);
    transition: transform 0.3s var(--ease);
    visibility: hidden;
  }
  .nav-rail[data-open] {
    transform: translateY(0);
    visibility: visible;
  }
  .nav-rail__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav-rail__link {
    padding: 16px 4px;
    font-family: var(--font-head);
    font-size: 21px;
    letter-spacing: 0.04em;
    color: var(--text-100);
    border-bottom: 1px solid rgba(27, 46, 74, 0.65);
  }
  .nav-rail__link::after { display: none; }
  .nav-rail__link[aria-current="page"] { color: var(--cyan-400); }
  .nav-rail__link[aria-current="page"]::before {
    content: "";
    display: inline-block;
    width: 10px;
    height: 10px;
    margin-right: 12px;
    background: var(--orange-500);
    vertical-align: middle;
  }

  .site-foot__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-foot__brand { grid-column: 1 / -1; }
  .site-foot__meta { flex-direction: column; gap: 8px; }
}

@media (max-width: 560px) {
  .brandmark__sub { display: none; }
  .brandmark__name { font-size: 16px; letter-spacing: 0.1em; }
  .btn--compact { padding: 8px 12px; font-size: 12px; letter-spacing: 0.06em; }
  .nav-toggle { padding: 8px 10px; }
  .nav-toggle__label { display: none; }
  .site-foot__inner { grid-template-columns: 1fr; }
  .num--xl { font-size: clamp(48px, 14vw, 72px); }
}

/* ---------- 20. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}