/* ============================================================
   LEYU赛事服务中心 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 页头 / 页脚 / 通用组件
   ============================================================ */

:root {
  --ink-950: #061222;
  --ink-900: #0A1B30;
  --ink-800: #102B48;
  --line-600: #284764;
  --cyan: #38F2D0;
  --cyan-100: #B8FFF1;
  --orange: #FF7A1A;
  --orange-100: #FFD5AE;
  --paper: #F6F1E7;
  --slate: #A9B8C8;
  --green: #55E6A5;
  --overlay: #020814;

  --font-display: 'Barlow Condensed', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;

  --shell: 1200px;
  --gutter: clamp(1.1rem, 4vw, 3rem);
  --radius: 2px;
  --shadow-soft: 0 18px 34px -32px rgba(2, 8, 20, .95);
  --edge: 1px solid var(--line-600);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, ul, ol, li, figure, blockquote, dl, dd { 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; }
table { border-collapse: collapse; width: 100%; }

/* ---------- base ---------- */
body {
  position: relative;
  overflow-x: hidden;
  background: var(--ink-950);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: clamp(1rem, .96rem + .2vw, 1.075rem);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto 0;
  height: min(480px, 52vh);
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(62% 52% at 88% 0%, rgba(56, 242, 208, .10), transparent 72%),
    radial-gradient(46% 40% at 2% 6%, rgba(255, 122, 26, .07), transparent 70%);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.005em;
  color: var(--paper);
  text-wrap: balance;
}

p { text-wrap: pretty; }

#main-content { display: block; scroll-margin-top: 6.5rem; }

:where(a, button, [tabindex]):focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- utilities ---------- */
.shell {
  width: min(calc(100% - 2 * var(--gutter)), var(--shell));
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

.mono {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  line-height: 1.5;
  text-transform: uppercase;
  color: var(--slate);
}

.dot {
  display: inline-block;
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--slate);
}
.dot--cyan { background: var(--cyan); box-shadow: 0 0 0 3px rgba(56, 242, 208, .14); }
.dot--orange { background: var(--orange); box-shadow: 0 0 0 3px rgba(255, 122, 26, .16); }
.dot--green { background: var(--green); box-shadow: 0 0 0 3px rgba(85, 230, 165, .14); }

/* ---------- skip link ---------- */
.skip-link {
  position: fixed;
  top: .65rem;
  left: .65rem;
  z-index: 300;
  padding: .6rem 1rem;
  background: var(--cyan);
  color: #04140f;
  font-weight: 700;
  font-size: .9rem;
  text-decoration: none;
  border-radius: var(--radius);
  transform: translateY(-180%);
  transition: transform .2s ease;
}
.skip-link:focus { transform: translateY(0); }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--ink-950);
  border-bottom: var(--edge);
}

/* --- 状态带 --- */
.status-strip {
  background: var(--ink-900);
  border-bottom: 1px solid rgba(40, 71, 100, .65);
}
.status-strip__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: .42rem;
}
.status-strip__note {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-size: .78rem;
  line-height: 1.4;
  color: var(--slate);
}
.status-strip__meta {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  margin: 0;
  font-size: .66rem;
  color: rgba(169, 184, 200, .82);
  white-space: nowrap;
}

/* --- 命令栏 --- */
.command-bar { background: var(--ink-950); }
.command-bar__inner {
  display: flex;
  align-items: center;
  gap: clamp(.7rem, 1.8vw, 1.8rem);
  min-height: 70px;
  padding-block: .55rem;
}

/* --- 品牌 --- */
.brand {
  display: flex;
  flex-direction: column;
  gap: .18rem;
  flex: 0 0 auto;
  padding-right: clamp(.7rem, 1.8vw, 1.5rem);
  border-right: var(--edge);
  text-decoration: none;
  color: var(--paper);
}
.brand__mark {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.42rem;
  line-height: 1;
  letter-spacing: .01em;
}
.brand__mark-accent { color: var(--cyan); }
.brand__desc {
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .16em;
  line-height: 1.2;
  color: var(--slate);
}
.brand--footer {
  display: inline-flex;
  padding-right: 0;
  border-right: 0;
  margin-bottom: 1.1rem;
}

/* --- 移动菜单按钮 --- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: .55rem;
  margin-left: auto;
  padding: .5rem .7rem;
  border: var(--edge);
  border-radius: var(--radius);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  transition: border-color .18s ease, color .18s ease;
}
.nav-toggle:hover { border-color: var(--cyan); color: var(--cyan); }
.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 16px;
}
.nav-toggle__bars span {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: transform .2s ease, opacity .2s ease;
}
.site-header[data-open="true"] .nav-toggle {
  border-color: var(--cyan);
  color: var(--cyan);
}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* --- 导航 --- */
.site-nav { margin-left: auto; }
.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(.35rem, 1.2vw, 1rem);
}
.site-nav__item { display: block; }
.site-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: .35rem;
  padding: .5rem .15rem;
  border-bottom: 2px solid transparent;
  color: var(--slate);
  font-size: .93rem;
  font-weight: 500;
  line-height: 1.3;
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s ease, border-color .18s ease;
}
.site-nav__idx {
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .06em;
  color: rgba(169, 184, 200, .5);
  transition: color .18s ease;
}
.site-nav__link:hover { color: var(--paper); border-bottom-color: rgba(56, 242, 208, .45); }
.site-nav__link[aria-current="page"] {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}
.site-nav__link[aria-current="page"] .site-nav__idx { color: var(--cyan); }
.site-nav__cta { display: none; }
.command-bar__cta { flex: 0 0 auto; }

/* --- 滚动进度轨 --- */
.progress-rail {
  height: 2px;
  background: rgba(40, 71, 100, .45);
  overflow: hidden;
}
.progress-rail__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  transition: transform .12s linear;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 7vw, 6rem);
  background: linear-gradient(180deg, var(--ink-950) 0%, #04101d 58%, #030c16 100%);
  border-top: var(--edge);
  color: var(--slate);
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan) 24%, var(--orange) 72%, transparent);
  opacity: .55;
}

.footer__scan {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding-block: 1rem;
  border-bottom: 1px solid rgba(40, 71, 100, .6);
}
.footer__scan .mono { color: rgba(169, 184, 200, .85); }
.footer__scan-line {
  flex: 1 1 auto;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line-600) 0 8px, transparent 8px 16px);
}

.footer__inner {
  display: grid;
  grid-template-columns: minmax(230px, 1.15fr) minmax(0, 2fr) minmax(245px, 1.15fr);
  gap: clamp(1.75rem, 4vw, 3.5rem);
  padding-block: clamp(2.25rem, 5vw, 3.75rem);
  border-bottom: 1px solid rgba(40, 71, 100, .6);
}

.footer__line {
  color: var(--paper);
  font-size: 1.02rem;
  line-height: 1.65;
  max-width: 26ch;
}
.footer__meta {
  margin-top: 1rem;
  font-size: .66rem;
  color: rgba(169, 184, 200, .82);
}

.footer__navs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 2rem);
  align-content: start;
}
.footer__group { min-width: 0; }
.footer__group-title {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: .68rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan-100);
  margin-bottom: .85rem;
}
.footer__list { display: grid; gap: .1rem; }
.footer__link {
  display: inline-block;
  padding: .28rem 0;
  color: var(--slate);
  font-size: .95rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.footer__link:hover { color: var(--paper); border-bottom-color: var(--cyan); }

.footer__contact { min-width: 0; }
.footer__contact-list { display: grid; gap: .85rem; }
.footer__contact-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .45rem;
  padding-bottom: .7rem;
  border-bottom: 1px solid rgba(40, 71, 100, .6);
}
.footer__contact-label {
  color: var(--cyan-100);
  font-size: .64rem;
  min-width: 2.2rem;
}
.footer__contact-value {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .02em;
  color: var(--paper);
  word-break: break-word;
}
.copy-btn {
  margin-left: auto;
  padding: .18rem .55rem;
  border: var(--edge);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .1em;
  color: var(--slate);
  transition: border-color .18s ease, color .18s ease;
}
.copy-btn:hover { border-color: var(--cyan); color: var(--cyan); }
.copy-btn[data-copied="true"] { border-color: var(--green); color: var(--green); }
.copy-btn[data-copied="false"] { border-color: var(--orange); color: var(--orange-100); }

.footer__note {
  margin-top: .9rem;
  font-size: .76rem;
  line-height: 1.65;
  color: rgba(169, 184, 200, .8);
}

.footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.25rem 1.85rem;
}
.footer__copy {
  margin: 0;
  font-size: .68rem;
  letter-spacing: .1em;
  color: rgba(169, 184, 200, .8);
}
.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin: 0;
}
.footer__legal-link {
  color: var(--slate);
  font-size: .76rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.footer__legal-link:hover { color: var(--cyan); border-bottom-color: var(--cyan); }

/* ============================================================
   通用组件
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 44px;
  padding: .62rem 1.15rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .9rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  text-decoration: none;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn--signal {
  background: var(--orange);
  border-color: var(--orange);
  color: #17100a;
}
.btn--signal:hover { background: #ff9145; border-color: #ff9145; }
.btn--signal:active { transform: translateY(1px); }
.btn--ghost {
  background: transparent;
  border-color: var(--line-600);
  color: var(--cyan-100);
}
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); }

/* 面包屑 */
.crumbs {
  padding-block: 1rem .2rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
}
.crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem;
}
.crumbs__item {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  color: rgba(169, 184, 200, .8);
}
.crumbs__item + .crumbs__item::before {
  content: "/";
  color: var(--line-600);
}
.crumbs__link {
  color: rgba(169, 184, 200, .86);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.crumbs__link:hover { color: var(--cyan-100); border-bottom-color: rgba(56, 242, 208, .5); }
.crumbs__item[aria-current="page"] { color: var(--paper); }

/* 章节骨架 */
.section {
  position: relative;
  padding-block: clamp(2.5rem, 6vw, 5rem);
}
.section__head {
  display: grid;
  gap: .55rem;
  max-width: 54ch;
  margin-bottom: clamp(1.25rem, 3vw, 2.25rem);
}
.section__index {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .2em;
  color: var(--cyan);
  text-transform: uppercase;
}
.section__title {
  font-size: clamp(1.75rem, 4vw, 2.6rem);
  line-height: 1.1;
}
.section__note {
  color: var(--slate);
  font-size: .95rem;
  line-height: 1.7;
}
.band {
  background: var(--ink-900);
  border-block: var(--edge);
}

/* 导语 */
.lead {
  max-width: 44ch;
  font-size: clamp(1.05rem, 1.9vw, 1.28rem);
  line-height: 1.7;
  color: var(--paper);
}

/* 正文容器 */
.prose {
  max-width: 42rem;
  color: var(--paper);
  font-size: 1.0125rem;
  line-height: 1.8;
}
.prose > * + * { margin-top: 1.1em; }
.prose h2 { font-size: clamp(1.4rem, 2.6vw, 1.85rem); margin-top: 1.8em; }
.prose h3 { font-size: clamp(1.15rem, 2vw, 1.35rem); margin-top: 1.6em; }
.prose p { color: var(--paper); }
.prose a {
  color: var(--cyan-100);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: .22em;
}
.prose a:hover { color: var(--cyan); }
.prose ul, .prose ol { padding-left: 1.25rem; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: .4em; }
.prose li::marker { color: var(--cyan); }
.prose strong { color: #ffffff; font-weight: 700; }
.prose blockquote {
  padding-left: 1rem;
  border-left: 2px solid var(--cyan);
  color: var(--slate);
}
.prose code {
  font-family: var(--font-mono);
  font-size: .86em;
  padding: .1em .35em;
  background: var(--ink-800);
  border: 1px solid rgba(40, 71, 100, .8);
  border-radius: 2px;
  color: var(--cyan-100);
}

/* 栅格 */
.grid {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.75rem);
}
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 215px), 1fr)); }
.grid--split { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.grid--aside { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); }

/* 面板 */
.panel {
  position: relative;
  background: var(--ink-900);
  border: var(--edge);
  border-radius: var(--radius);
  padding: clamp(1.1rem, 2.4vw, 1.75rem);
  box-shadow: var(--shadow-soft);
}
.panel--offset { margin-top: clamp(.75rem, 2vw, 2rem); }
.panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  margin-bottom: .85rem;
}
.panel__tag {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}
.panel__title {
  font-size: 1.25rem;
  line-height: 1.22;
}
.panel__body {
  color: var(--slate);
  font-size: .95rem;
  line-height: 1.7;
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .22rem .55rem;
  border: var(--edge);
  border-radius: var(--radius);
  background: var(--ink-800);
  color: var(--slate);
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .1em;
  line-height: 1.5;
}
.tag--cyan { background: var(--cyan); border-color: var(--cyan); color: #04140f; }
.tag--orange { background: var(--orange-100); border-color: var(--orange-100); color: #241003; }
.tag--green { background: var(--green); border-color: var(--green); color: #04140f; }

/* 图片容器基础规则（页面阶段放置图片占位） */
.media { display: grid; gap: .6rem; margin: 0; }
.media__frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--ink-800);
  border: var(--edge);
  border-radius: var(--radius);
}
.media__frame--tall { aspect-ratio: 3 / 4; }
.media__frame--square { aspect-ratio: 1 / 1; }
.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 56%, rgba(2, 8, 20, .55));
}
.media__cap {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .08em;
  color: var(--slate);
}

/* 滚动显现 */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .6s ease, transform .6s cubic-bezier(.22, .7, .3, 1);
}
[data-reveal].is-visible { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: .08s; }
[data-reveal][data-delay="2"] { transition-delay: .16s; }
[data-reveal][data-delay="3"] { transition-delay: .24s; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1180px) {
  .site-nav__list { gap: .35rem; }
  .site-nav__link { font-size: .86rem; }
  .site-nav__idx { display: none; }
}

@media (max-width: 1023px) {
  .nav-toggle { display: inline-flex; }
  .command-bar__cta { display: none; }
  .brand { border-right: 0; padding-right: 0; }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    max-height: calc(100dvh - 8.5rem);
    overflow-y: auto;
    padding: .35rem var(--gutter) 1.25rem;
    margin-left: 0;
    background: var(--ink-900);
    border-top: var(--edge);
    border-bottom: var(--edge);
    box-shadow: 0 26px 42px -30px rgba(2, 8, 20, .95);
  }
  .site-header[data-open="true"] .site-nav { display: block; }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .site-nav__item { border-bottom: 1px solid rgba(40, 71, 100, .65); }
  .site-nav__link {
    display: flex;
    width: 100%;
    padding: .95rem 0;
    border-bottom: 0;
    font-size: 1.02rem;
  }
  .site-nav__link:hover { border-bottom-color: transparent; color: var(--cyan-100); }
  .site-nav__link[aria-current="page"] {
    color: var(--cyan);
    border-bottom-color: transparent;
    background: linear-gradient(90deg, rgba(56, 242, 208, .1), transparent 70%);
  }
  .site-nav__idx {
    display: inline-block;
    min-width: 2.2rem;
    color: var(--cyan);
    font-size: .66rem;
  }
  .site-nav__cta {
    display: inline-flex;
    width: 100%;
    margin-top: 1rem;
  }

  .footer__inner { grid-template-columns: minmax(0, 1fr); }
  .footer__line { max-width: 40ch; }
  .grid--split, .grid--aside { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 760px) {
  .status-strip__meta span + span { display: none; }
  .status-strip__note { font-size: .72rem; }
  .command-bar__inner { min-height: 62px; }
  .brand__mark { font-size: 1.24rem; }
  .brand__desc { font-size: .54rem; letter-spacing: .12em; }
  .footer__navs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__base { flex-direction: column; align-items: flex-start; }
  .footer__legal { gap: .9rem; }
}

@media (max-width: 480px) {
  .status-strip__note { font-size: .68rem; }
  .footer__navs { grid-template-columns: minmax(0, 1fr); gap: 1.4rem; }
  .btn { width: 100%; }
  .site-nav__cta { width: 100%; }
}

/* ============================================================
   动效降级
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
  .progress-rail__bar { transition: none; }
}