/* ============================================================
   悦盈体育 · 共享外壳样式  /assets/site.css
   奶油纸白底 · 青海湖蓝结构 · 日落橙强调 · 荧光绿状态
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body, h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { max-width: 100%; display: block; }
button { font: inherit; color: inherit; background: none; border: 0; }
a { color: var(--lake); text-decoration-thickness: 1px; text-underline-offset: 3px; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  --paper: #F6F1E6;
  --ink-blue: #123B57;
  --lake: #2A79A8;
  --lake-soft: #C7DCE8;
  --sunset: #E36B2C;
  --sunset-deep: #C9561F;
  --sunset-soft: #F4A96A;
  --ink: #2A2422;
  --gray: #6C7684;
  --neon: #B4E63C;
  --white: #FFFFFF;

  --rule: rgba(42, 36, 34, 0.14);
  --rule-strong: rgba(42, 36, 34, 0.26);
  --shadow-card: 0 22px 46px -34px rgba(18, 59, 87, 0.55);
  --shadow-float: 0 30px 60px -40px rgba(18, 59, 87, 0.65);

  --rail: 232px;
  --radius-lg: 32px;
  --radius-md: 24px;
  --radius-sm: 16px;
  --radius-pill: 999px;

  --font-display: "HarmonyOS Sans Condensed", "HarmonyOS Sans SC", "Source Han Sans SC",
    "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui,
    -apple-system, "Segoe UI", sans-serif;
  --font-body: "Source Han Sans SC", "Noto Sans SC", "HarmonyOS Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  padding-left: var(--rail);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  background-color: var(--paper);
  background-image: radial-gradient(circle at 1px 1px, rgba(42, 36, 34, 0.045) 1px, transparent 0);
  background-size: 7px 7px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink-blue);
  letter-spacing: 0.01em;
}

p { text-wrap: pretty; }

#main-content { display: block; }

.numeral {
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

::selection { background: var(--sunset-soft); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--sunset);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 4. 通用工具 ---------- */
.wrap {
  width: min(1180px, 100% - 2 * clamp(20px, 5vw, 72px));
  margin-inline: auto;
}

.stack > * + * { margin-top: clamp(14px, 2vw, 22px); }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.rule { height: 1px; background: var(--rule-strong); border: 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray);
}

.lede {
  max-width: 58ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--gray);
}

/* ---------- 5. 跳转链接 / 阅读进度 ---------- */
.skip-link {
  position: fixed;
  top: -120px;
  left: 50%;
  z-index: 200;
  transform: translateX(-50%);
  padding: 12px 22px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  background: var(--ink-blue);
  color: var(--paper);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 0; }

.reading-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 180;
  height: 2px;
  background: transparent;
  pointer-events: none;
}
.reading-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--sunset) 0%, var(--sunset-soft) 100%);
  transition: width 0.12s linear;
}

/* ---------- 6. 头部：左缘框架式导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 120;
  width: var(--rail);
  background: var(--paper);
  border-right: 1px solid var(--rule-strong);
}

.site-header__inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 30px 22px 26px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.site-header__brand { display: flex; flex-direction: column; gap: 14px; }

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}
.brand__mark {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 46px; height: 46px;
  border-radius: var(--radius-sm);
  background: var(--ink-blue);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 300;
  letter-spacing: 0.06em;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.3; min-width: 0; }
.brand__name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink-blue);
  letter-spacing: 0.02em;
}
.brand__line { font-size: 11px; letter-spacing: 0.08em; color: var(--gray); }

.site-header__support {
  padding-left: 2px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gray);
}

.site-header__action {
  align-self: stretch;
  justify-content: center;
  font-size: 14px;
}

/* 导航 */
.site-nav {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
  margin-top: 34px;
}

.site-nav__eyebrow {
  margin-bottom: 14px;
  padding-left: 10px;
  border-left: 2px solid var(--sunset-soft);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.site-nav__list { counter-reset: nav; }

.site-nav__item { counter-increment: nav; }

.site-nav__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 26px 11px 0;
  border-bottom: 1px solid var(--rule);
  color: var(--gray);
  font-size: 15px;
  text-decoration: none;
  transition: color 0.18s var(--ease);
}
.site-nav__link::before {
  content: counter(nav, decimal-leading-zero);
  font-size: 11px;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
  color: var(--gray);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 0;
  height: 2px;
  background: var(--neon);
  transform: translateY(-50%);
  transition: width 0.22s var(--ease);
}
.site-nav__link:hover { color: var(--lake); }
.site-nav__link:hover::after { width: 10px; }
.site-nav__link[aria-current="page"],
.site-nav__link.is-current {
  color: var(--ink);
  font-weight: 700;
}
.site-nav__link[aria-current="page"]::after,
.site-nav__link.is-current::after { width: 18px; }

.site-nav__foot { margin-top: auto; padding-top: 26px; }
.site-nav__foot .btn { width: 100%; justify-content: center; }

/* 移动端胶囊按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 8px 16px;
  border: 1px solid var(--ink-blue);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--ink-blue);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.nav-toggle__bars { display: inline-flex; flex-direction: column; gap: 4px; width: 18px; }
.nav-toggle__bars span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-toggle__label { white-space: nowrap; }

/* ---------- 7. 按钮 / 胶囊 / 切换条 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.3;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease),
    border-color 0.18s var(--ease), transform 0.18s var(--ease);
}
.btn--solid { background: var(--sunset); color: var(--white); }
.btn--solid:hover { background: var(--sunset-deep); }
.btn--ghost { background: transparent; border-color: var(--ink-blue); color: var(--ink-blue); }
.btn--ghost:hover { background: var(--lake-soft); }
.btn--quiet { background: var(--lake-soft); color: var(--ink-blue); }
.btn--quiet:hover { background: var(--lake); color: var(--white); }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 28px;
  padding: 4px 12px;
  border: 1px solid var(--rule);
  border-radius: var(--radius-pill);
  background: var(--paper);
  color: var(--gray);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: background-color 0.18s var(--ease), transform 0.18s var(--ease),
    color 0.18s var(--ease);
}
.pill:hover { background: var(--lake-soft); transform: translateY(-1px); color: var(--ink-blue); }
.pill--accent { background: var(--sunset); border-color: transparent; color: var(--white); }
.pill--accent:hover { background: var(--sunset-deep); color: var(--white); }
.pill--live { color: var(--ink-blue); }
.pill--live::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--neon);
}

.chip-row {
  display: flex;
  gap: 8px;
  padding-bottom: 6px;
  overflow-x: auto;
  scrollbar-width: thin;
}
.chip {
  flex: 0 0 auto;
  min-height: 40px;
  padding: 8px 18px;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-pill);
  background: var(--paper);
  color: var(--gray);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease),
    border-color 0.18s var(--ease);
}
.chip:hover { background: var(--lake-soft); }
.chip[aria-selected="true"] {
  background: var(--ink-blue);
  border-color: var(--ink-blue);
  color: var(--paper);
}
[data-tab-panel][hidden] { display: none; }

/* ---------- 8. 面包屑 ---------- */
.breadcrumbs { padding-top: 22px; }
.breadcrumbs__list { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.breadcrumbs__item { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; letter-spacing: 0.08em; }
.breadcrumbs__link { color: var(--gray); text-decoration: none; }
.breadcrumbs__link:hover { color: var(--lake); }
.breadcrumbs__sep { color: var(--lake-soft); }
.breadcrumbs__current { color: var(--ink); }

/* ---------- 9. 页头 / 章节 ---------- */
.page-head { padding-block: clamp(36px, 6vw, 84px) 0; }
.page-head__eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--sunset);
  font-weight: 600;
}
.page-head__title {
  margin: 0.24em 0 0.3em;
  font-size: clamp(40px, 6.4vw, 76px);
  font-weight: 200;
  line-height: 1.04;
  letter-spacing: 0.02em;
  color: var(--ink-blue);
}
.page-head__lede { max-width: 60ch; font-size: 17px; color: var(--gray); }

.section { padding-block: clamp(54px, 8vw, 118px); }
.section--tight { padding-block: clamp(30px, 4vw, 60px); }
.section__head { max-width: 68ch; margin-bottom: clamp(24px, 4vw, 46px); }
.section__index {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-display);
  font-size: 13px;
  font-style: italic;
  font-weight: 200;
  letter-spacing: 0.08em;
  color: var(--sunset);
}
.section__title {
  font-size: clamp(28px, 3.6vw, 36px);
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--ink-blue);
}
.section__lede { max-width: 58ch; color: var(--gray); }

/* ---------- 10. 网格 / 卡片 / 读数 ---------- */
.grid { display: grid; gap: clamp(20px, 3vw, 36px); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--asym { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); align-items: start; }
.grid--offset { align-items: start; }
.grid--offset > *:nth-child(2n) { transform: translateY(18px); }
.grid--offset > *:nth-child(3n) { transform: translateY(-10px); }

.card {
  position: relative;
  padding: clamp(22px, 2.6vw, 32px);
  border: 1px solid rgba(42, 36, 34, 0.07);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-card);
}
.card--float { transform: translateY(-8px); box-shadow: var(--shadow-float); }
.card__title {
  margin-bottom: 8px;
  font-size: clamp(20px, 2vw, 24px);
  font-weight: 600;
  color: var(--ink-blue);
}
.card__meta {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray);
}
.card__body { color: var(--gray); }

.stat { display: flex; flex-direction: column; gap: 6px; }
.stat__value {
  font-family: var(--font-display);
  font-size: clamp(56px, 9vw, 104px);
  font-weight: 250;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink-blue);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}
.stat__label { font-size: 12px; letter-spacing: 0.08em; color: var(--gray); }

/* ---------- 11. 图片容器基础规则 ---------- */
.img-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(42, 36, 34, 0.08);
  border-radius: var(--radius-lg);
  background: var(--lake-soft);
  aspect-ratio: 16 / 10;
}
.img-frame img { width: 100%; height: 100%; object-fit: cover; }
.img-frame--wide { aspect-ratio: 21 / 9; }
.img-frame--portrait { aspect-ratio: 4 / 5; }
.img-frame--square { aspect-ratio: 1 / 1; }
.img-frame__tag {
  position: absolute;
  left: 16px;
  bottom: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--paper);
  color: var(--ink-blue);
  font-size: 12px;
  letter-spacing: 0.08em;
}
.img-frame__caption {
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gray);
}

/* ---------- 12. 滚动显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
[data-reveal].is-revealed { opacity: 1; transform: none; }

/* ---------- 13. 页脚 ---------- */
.site-footer {
  margin-top: clamp(60px, 9vw, 130px);
  border-top: 1px solid var(--rule-strong);
  background: var(--paper);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 2fr);
  gap: clamp(28px, 5vw, 64px);
  padding-block: clamp(44px, 6vw, 82px);
}

.site-footer__brand { max-width: 34ch; }
.site-footer__mark {
  margin-bottom: 8px;
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink-blue);
}
.site-footer__closing { font-size: 15px; color: var(--ink); }
.site-footer__note { margin-top: 10px; font-size: 14px; line-height: 1.7; color: var(--gray); }

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 36px);
}
.footer-col__title {
  margin-bottom: 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--sunset);
}
.footer-col__list { display: grid; gap: 10px; }
.footer-col__link {
  display: inline-block;
  color: var(--ink);
  font-size: 15px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.footer-col__link:hover { color: var(--lake); border-bottom-color: var(--lake); }

.site-footer__strip {
  background: var(--lake-soft);
  border-top: 1px solid var(--rule);
}
.site-footer__strip-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 28px;
  padding-block: 16px;
  font-size: 13px;
  color: var(--ink-blue);
}
.site-footer__contact,
.site-footer__address,
.site-footer__legal { font-size: 13px; letter-spacing: 0.02em; }
.site-footer__legal { font-variant-numeric: tabular-nums; }

/* ---------- 14. 响应式 ---------- */
@media (max-width: 1023px) {
  html { scroll-padding-top: 84px; }
  body { padding-left: 0; }

  .site-header {
    position: sticky;
    top: 0; left: 0; right: 0; bottom: auto;
    width: auto;
    border-right: 0;
    border-bottom: 1px solid var(--rule-strong);
    z-index: 130;
  }
  .site-header__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    height: auto;
    padding: 12px 18px;
    overflow: visible;
  }
  .site-header__brand {
    flex-direction: row;
    align-items: center;
    gap: 12px;
    flex: 1 1 auto;
    min-width: 0;
  }
  .brand__mark { width: 38px; height: 38px; font-size: 15px; border-radius: 13px; }
  .brand__name { font-size: 17px; }
  .site-header__support,
  .site-header__action { display: none; }

  .nav-toggle { display: inline-flex; flex: 0 0 auto; }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 125;
    margin: 0;
    padding: 96px 24px 36px;
    overflow-y: auto;
    background: var(--paper);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.22s var(--ease), transform 0.22s var(--ease),
      visibility 0.22s var(--ease);
  }
  .site-nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .site-nav__eyebrow { margin-top: 0; font-size: 12px; }
  .site-nav__link { padding: 15px 30px 15px 0; font-size: 19px; }
  .site-nav__link::before { font-size: 12px; }
  .site-nav__foot { margin-top: 32px; padding-top: 0; }

  html.is-nav-open { overflow: hidden; }
}

@media (max-width: 900px) {
  .site-footer__inner { grid-template-columns: minmax(0, 1fr); }
  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--asym { grid-template-columns: minmax(0, 1fr); }
  .grid--offset > *:nth-child(2n),
  .grid--offset > *:nth-child(3n) { transform: none; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
  .card--float { transform: none; }
  .site-footer__strip-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  .footer-nav { grid-template-columns: minmax(0, 1fr); }
  .page-head__title { font-size: clamp(34px, 11vw, 46px); }
}

/* ---------- 15. 降低动效偏好 ---------- */
@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;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .reading-progress__bar { transition: none; }
  .card--float { transform: none; }
}