/* ==========================================================================
   多宝体育主站 · 共享样式表 /assets/site.css
   基线：深墨蓝底 + 荧光青强调 + 1px 精密网格线 + 锐利直角
   ========================================================================== */

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

html {
  -webkit-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, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; border-spacing: 0; }
summary { cursor: pointer; }
summary::-webkit-details-marker { display: none; }

/* 2. 变量 ----------------------------------------------------------------- */
:root {
  --ink-900: #0A1725;
  --ink-800: #102A42;
  --ink-700: #17334F;
  --line: #24405C;
  --cyan: #33E6CE;
  --blue: #4FC3FF;
  --amber: #FFA23A;
  --rose: #FF5B7A;
  --white: #E9F0F7;
  --muted: #8FA6BC;
  --body-text: #C9D8E6;

  --font-sans: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shell: min(1440px, calc(100% - 2 * clamp(16px, 4vw, 56px)));
  --gap: clamp(16px, 2.4vw, 32px);
  --pad-y: clamp(48px, 7vw, 96px);
  --header-offset: 110px;
}

/* 3. 基础 ----------------------------------------------------------------- */
body {
  background-color: var(--ink-900);
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  color: var(--white);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.08;
}

h1 { font-size: clamp(38px, 7.2vw, 86px); line-height: 0.98; }
h2 { font-size: clamp(26px, 3.4vw, 40px); }
h3 { font-size: clamp(19px, 1.9vw, 24px); font-weight: 700; letter-spacing: -0.01em; }
h4 { font-size: clamp(16px, 1.4vw, 18px); font-weight: 700; letter-spacing: 0; }

p { max-width: 42em; }

a { color: inherit; text-decoration: none; }

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

::selection { background: var(--cyan); color: #04201E; }

#main-content { scroll-margin-top: var(--header-offset); }

/* 4. 布局工具 ------------------------------------------------------------- */
.shell,
.container {
  width: var(--shell);
  margin-inline: auto;
}

.prose {
  max-width: 64ch;
  font-size: clamp(15px, 1.05vw, 17px);
  line-height: 1.85;
  color: var(--body-text);
}
.prose > * + * { margin-top: 1.05em; }
.prose h2 { font-size: clamp(22px, 2.4vw, 30px); margin-top: 2em; line-height: 1.2; }
.prose h3 { font-size: clamp(18px, 1.8vw, 22px); margin-top: 1.6em; line-height: 1.3; }
.prose strong { color: var(--white); font-weight: 700; }
.prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.16s ease;
}
.prose a:hover { color: var(--blue); }
.prose ul { display: flex; flex-direction: column; gap: 0.55em; }
.prose li { position: relative; padding-left: 1.4em; }
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 9px;
  height: 1px;
  background: var(--cyan);
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  color: var(--blue);
}

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

.rule {
  height: 1px;
  width: 100%;
  background: var(--line);
  border: 0;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  text-transform: uppercase;
}

.mono-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.is-up { color: var(--amber); }
.is-down { color: var(--rose); }
.is-flat { color: var(--muted); }

/* 5. 按钮与标签 ----------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 12px 22px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  color: var(--white);
  font-size: 14px;
  line-height: 1.4;
  letter-spacing: 0.06em;
  border-radius: 0;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}
.btn:hover,
.btn:focus-visible {
  background: var(--ink-700);
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn--solid {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #04201E;
  font-weight: 700;
}
.btn--solid:hover,
.btn--solid:focus-visible {
  background: #63F0DC;
  border-color: #63F0DC;
  color: #04201E;
}

.btn--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--body-text);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  padding: 3px 9px;
  border: 1px solid var(--line);
  background: rgba(23, 51, 79, 0.6);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  border-radius: 0;
  white-space: nowrap;
}
.tag--up { color: var(--amber); border-color: rgba(255, 162, 58, 0.45); }
.tag--down { color: var(--rose); border-color: rgba(255, 91, 122, 0.45); }
.tag--active { color: var(--cyan); border-color: var(--cyan); }

/* 6. 章节头与面包屑 ------------------------------------------------------- */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px clamp(12px, 2vw, 24px);
  padding-bottom: 14px;
  margin-bottom: clamp(20px, 3vw, 36px);
  border-bottom: 1px solid var(--line);
}
.section-head__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}
.section-head__title {
  margin: 0;
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
}
.section-head__note {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
}
.breadcrumb a { color: var(--muted); transition: color 0.16s ease; }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb__sep { color: var(--line); }
.breadcrumb [aria-current="page"] { color: var(--white); }

/* 7. 手风琴 --------------------------------------------------------------- */
.accordion { border-top: 1px solid var(--line); }
.accordion__item {
  border-bottom: 1px solid var(--line);
  background: transparent;
  transition: background 0.18s ease;
}
.accordion__item[open] { background: var(--ink-800); }
.accordion__summary {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px clamp(0px, 1vw, 10px);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--white);
  list-style: none;
  transition: color 0.18s ease;
}
.accordion__summary::after {
  content: "＋";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan);
}
.accordion__item[open] .accordion__summary::after { content: "－"; }
.accordion__summary:hover { color: var(--cyan); }
.accordion__body {
  padding: 0 clamp(0px, 1vw, 10px) 20px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--body-text);
}

/* 8. 数据表与统计块 ------------------------------------------------------- */
.data-table {
  width: 100%;
  font-variant-numeric: tabular-nums;
}
.data-table th,
.data-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 14px;
}
.data-table th {
  background: var(--ink-800);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.data-table td.num { font-family: var(--font-mono); }
.data-table tbody tr { transition: background 0.16s ease; }
.data-table tbody tr:hover { background: var(--ink-800); }

.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.stat__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}
.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.1;
  color: var(--white);
}
.stat__delta {
  font-family: var(--font-mono);
  font-size: 12px;
}

/* 9. 图片容器 ------------------------------------------------------------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: 0;
}
.media > img,
.media > video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.94) contrast(1.04);
}
.media--21x9 { aspect-ratio: 21 / 9; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--3x2 { aspect-ratio: 3 / 2; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media__tag {
  position: absolute;
  top: 0;
  left: 0;
  padding: 5px 9px;
  background: var(--cyan);
  color: #04201E;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}
.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 16px;
  background: linear-gradient(to top, rgba(10, 23, 37, 0.94), rgba(10, 23, 37, 0));
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* 10. 头部 ---------------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: 12px 18px;
  background: var(--cyan);
  color: #04201E;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}
.skip-link:focus { left: 12px; top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(10, 23, 37, 0.97);
  background-image: repeating-linear-gradient(90deg, rgba(36, 64, 92, 0.4) 0 1px, transparent 1px 25%);
  border-bottom: 1px solid var(--line);
}
.site-header::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan) 0%, rgba(51, 230, 206, 0.15) 42%, rgba(51, 230, 206, 0) 70%);
}
.site-header__inner {
  width: var(--shell);
  margin-inline: auto;
  padding-top: clamp(14px, 2vw, 22px);
}

.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(12px, 3vw, 40px);
}
.masthead__meta {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}
.masthead__meta--left { justify-self: start; text-align: left; }
.masthead__meta--right { justify-self: end; text-align: right; align-items: flex-end; }
.masthead__value {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  color: var(--white);
  white-space: nowrap;
}
.pulse {
  width: 6px;
  height: 6px;
  background: var(--cyan);
  display: inline-block;
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}

.masthead__brand {
  display: block;
  padding: 2px 0 6px;
  text-align: center;
}
.masthead__name {
  display: block;
  font-weight: 900;
  font-size: clamp(27px, 4.4vw, 52px);
  letter-spacing: -0.02em;
  line-height: 0.98;
  color: var(--white);
  transition: color 0.18s ease;
}
.masthead__brand:hover .masthead__name,
.masthead__brand:focus-visible .masthead__name { color: var(--cyan); }
.masthead__line {
  display: block;
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: clamp(9px, 1vw, 11px);
  letter-spacing: 0.24em;
  color: var(--muted);
}

.site-header__bar {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  margin-top: clamp(10px, 1.6vw, 16px);
  border-top: 1px solid var(--line);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 13px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  text-transform: uppercase;
}
.nav-toggle__icon {
  position: relative;
  display: block;
  width: 18px;
  height: 1px;
  background: var(--cyan);
  transition: transform 0.18s ease, background 0.18s ease;
}
.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 1px;
  background: var(--cyan);
  transition: transform 0.18s ease, opacity 0.18s ease;
}
.nav-toggle__icon::before { top: -5px; }
.nav-toggle__icon::after { top: 5px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after { transform: translateY(-5px) rotate(-45deg); }

.site-nav { width: 100%; }
.site-nav__list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(8px, 2.2vw, 36px);
}
.site-nav__item { position: relative; }
.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 15px 2px 16px;
  font-size: clamp(13px, 1.15vw, 15px);
  letter-spacing: 0.02em;
  color: var(--white);
  white-space: nowrap;
  transition: color 0.18s ease;
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 9px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}
.site-nav__link:hover,
.site-nav__link:focus-visible { color: var(--cyan); }
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"] { color: var(--cyan); font-weight: 700; }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

/* 11. 页脚 ---------------------------------------------------------------- */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 9vw, 140px);
  border-top: 1px solid var(--line);
  background-color: var(--ink-800);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: min(260px, 42%);
  height: 2px;
  background: var(--cyan);
}
.site-footer__inner {
  width: var(--shell);
  margin-inline: auto;
  padding: clamp(40px, 5.5vw, 72px) 0 clamp(24px, 3vw, 36px);
}
.site-footer__grid {
  display: grid;
  grid-template-columns: minmax(240px, 1.15fr) 2fr;
  gap: clamp(32px, 5vw, 72px);
}
.site-footer__name {
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--white);
}
.site-footer__line {
  margin-top: 12px;
  max-width: 34ch;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.9;
  letter-spacing: 0.1em;
  color: var(--muted);
}
.site-footer__brand .btn { margin-top: 22px; }

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
}
.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  line-height: 1.4;
  color: var(--cyan);
}
.footer-col__list { display: flex; flex-direction: column; gap: 9px; }
.footer-col__link {
  display: inline-block;
  font-size: 14px;
  color: var(--body-text);
  transform-origin: left center;
  transition: color 0.16s ease, transform 0.16s ease;
}
.footer-col__link:hover,
.footer-col__link:focus-visible {
  color: var(--cyan);
  transform: translateX(4px);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 32px;
  margin-top: clamp(32px, 4vw, 56px);
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.9;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.site-footer__compliance { max-width: 78ch; }
.site-footer__signoff { color: var(--white); white-space: nowrap; }

/* 12. 滚动渐显 ------------------------------------------------------------ */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
html.js [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* 13. 响应式 -------------------------------------------------------------- */
@media (max-width: 1080px) {
  .grid--4 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-footer__grid { grid-template-columns: 1fr; }
}

@media (max-width: 880px) {
  :root { --header-offset: 96px; }

  .site-header__bar { justify-content: space-between; }
  .nav-toggle { display: inline-flex; margin-left: auto; }

  .site-nav { display: none; flex: 1 0 100%; }
  .site-nav[data-open] { display: block; padding-bottom: 14px; }
  .site-nav[data-open] .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .site-nav[data-open] .site-nav__link {
    display: block;
    padding: 13px 0 13px 16px;
    border-bottom: 1px solid var(--line);
    font-size: 15px;
    white-space: normal;
  }
  .site-nav[data-open] .site-nav__link::after {
    top: 0;
    bottom: 0;
    left: 0;
    right: auto;
    width: 2px;
    height: auto;
    transform: scaleY(0);
    transform-origin: top center;
  }
  .site-nav[data-open] .site-nav__link:hover::after,
  .site-nav[data-open] .site-nav__link:focus-visible::after,
  .site-nav[data-open] .site-nav__link[aria-current="page"]::after {
    transform: scaleY(1);
  }
}

@media (max-width: 720px) {
  .masthead { grid-template-columns: 1fr auto; }
  .masthead__meta--left { display: none; }
  .masthead__brand { text-align: left; }
  .masthead__meta--right { text-align: right; }
  .section-head__note { margin-left: 0; flex-basis: 100%; }
  .data-table th, .data-table td { padding: 10px 10px; font-size: 13px; }
  .site-footer__signoff { white-space: normal; }
}

@media (max-width: 560px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .masthead__line { letter-spacing: 0.16em; }
}

/* 14. 动效降级 ------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .pulse { animation: none; }
  .site-nav__link::after,
  .footer-col__link,
  .btn,
  .accordion__summary,
  .nav-toggle__icon,
  .nav-toggle__icon::before,
  .nav-toggle__icon::after {
    transition-duration: 0.01ms;
  }
  html.js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}