/* =========================================================
   欧皇体育 app — /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 刊头刊脚 / 通用组件
   ========================================================= */

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

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

body,
h1, h2, h3, h4, h5, h6,
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; }

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

table { border-collapse: collapse; }

/* ---------- tokens ---------- */
:root {
  --ink: #0A0E17;
  --panel: #141A28;
  --panel-soft: rgba(20, 26, 40, 0.72);
  --line: #232B3D;
  --gold: #FFC72C;
  --red: #FF3B30;
  --cyan: #00E5FF;
  --mint: #2BD9A8;
  --chalk: #F5F7FA;
  --steel: #9AA6BF;
  --paper: #EEF1F6;

  --radius: 14px;
  --radius-sm: 8px;
  --pill: 999px;

  --shell: min(1240px, 100% - 2.5rem);

  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---------- base ---------- */
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  color: var(--chalk);
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 620px at 82% -12%, rgba(0, 229, 255, 0.09), transparent 68%),
    radial-gradient(760px 520px at 8% 6%, rgba(255, 199, 44, 0.06), transparent 70%),
    linear-gradient(to right, rgba(35, 43, 61, 0.5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(35, 43, 61, 0.34) 1px, transparent 1px);
  background-size: auto, auto, 96px 96px, 96px 96px;
  background-attachment: fixed, fixed, scroll, scroll;
  min-height: 100%;
}

main { display: block; }

#main-content { scroll-margin-top: 150px; }

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(1.9rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.4rem); }
h3 { font-size: clamp(1.1rem, 1.7vw, 1.4rem); }
h4 { font-size: 1rem; }

p { text-wrap: pretty; }

strong { font-weight: 700; color: var(--chalk); }

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

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- skip link ---------- */
.skip-link {
  position: absolute;
  left: 50%;
  top: -120px;
  transform: translateX(-50%);
  z-index: 200;
  padding: 0.7rem 1.3rem;
  background: var(--gold);
  color: var(--ink);
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: top 0.18s ease;
}

.skip-link:focus { top: 0; }

/* =========================================================
   刊头 / HEADER
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.86);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--line);
}

.masthead { border-bottom: 1px solid var(--line); }

.masthead__inner {
  width: var(--shell);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding-block: clamp(0.95rem, 1.9vw, 1.55rem);
  transition: padding-block 0.26s ease;
}

.masthead__brand {
  grid-column: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.22rem;
  min-width: 0;
}

.masthead__name {
  position: relative;
  font-size: clamp(1.6rem, 3.1vw, 2.45rem);
  font-weight: 900;
  letter-spacing: 0.15em;
  line-height: 1.05;
  color: var(--chalk);
  transition: color 0.2s ease, font-size 0.26s ease;
}

.masthead__name::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -0.34rem;
  width: 0;
  height: 2px;
  background: var(--gold);
  transform: translateX(-50%);
  transition: width 0.26s ease;
}

.masthead__name:hover { color: var(--gold); }
.masthead__name:hover::after { width: 62%; }

.masthead__desc {
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--steel);
  transition: opacity 0.2s ease, max-height 0.26s ease;
  max-height: 2.2rem;
  overflow: hidden;
}

.masthead__issue {
  grid-column: 1;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--steel);
  white-space: nowrap;
  transition: opacity 0.2s ease;
}

.masthead__utility {
  grid-column: 3;
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* 滚动压缩状态 */
.site-header[data-condensed="true"] .masthead__inner { padding-block: 0.5rem; }
.site-header[data-condensed="true"] .masthead__name { font-size: 1.3rem; }
.site-header[data-condensed="true"] .masthead__desc {
  opacity: 0;
  max-height: 0;
}
.site-header[data-condensed="true"] .masthead__issue { opacity: 0; }

/* 主导航 */
.primary-nav { position: relative; }

.primary-nav__list {
  width: var(--shell);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.1rem;
}

.primary-nav__item { display: block; }

.primary-nav__link {
  position: relative;
  display: block;
  padding: 0.8rem 1rem 0.95rem;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  color: var(--steel);
  transition: color 0.18s ease;
}

.primary-nav__link::after {
  content: "";
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: 0.52rem;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.22s ease;
}

.primary-nav__link:hover { color: var(--chalk); }
.primary-nav__link:hover::after { transform: scaleX(1); }

.primary-nav__link[aria-current="page"] { color: var(--gold); }
.primary-nav__link[aria-current="page"]::after { transform: scaleX(1); }

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: var(--panel);
  color: var(--chalk);
  cursor: pointer;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.nav-toggle:hover { border-color: var(--gold); color: var(--gold); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: background 0.18s ease;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s ease, top 0.2s ease, background 0.18s ease;
}

.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.nav-toggle[data-open="true"] { border-color: var(--gold); color: var(--gold); }
.nav-toggle[data-open="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[data-open="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.nav-toggle[data-open="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

/* 阅读进度线 */
.scroll-progress {
  position: relative;
  height: 2px;
  overflow: hidden;
  background: rgba(35, 43, 61, 0.6);
}

.scroll-progress > span {
  position: absolute;
  inset: 0;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--gold), var(--cyan));
}

/* =========================================================
   页脚 / FOOTER
   ========================================================= */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 8vw, 6.5rem);
  border-top: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(20, 26, 40, 0.92), var(--ink) 78%);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(40%, 440px);
  height: 2px;
  background: linear-gradient(90deg, var(--gold), rgba(255, 199, 44, 0));
}

.footer__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 3rem);
  padding-block: clamp(2.4rem, 5vw, 3.8rem);
}

.footer__brand-name {
  display: inline-block;
  font-size: 1.65rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  color: var(--chalk);
  transition: color 0.2s ease;
}

.footer__brand-name:hover { color: var(--gold); }

.footer__tagline {
  margin-top: 0.45rem;
  font-size: 0.88rem;
  color: var(--steel);
}

.footer__issue {
  margin-top: 0.85rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.footer__cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.6rem 1.2rem;
}

.footer__col-title {
  margin-bottom: 0.85rem;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--chalk);
}

.footer__col-title::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  margin-top: 0.5rem;
  background: var(--gold);
}

.footer__list { display: grid; gap: 0.5rem; }

.footer__link {
  display: inline-block;
  font-size: 0.88rem;
  color: var(--steel);
  transition: color 0.18s ease, padding-left 0.18s ease;
}

.footer__link:hover {
  color: var(--gold);
  padding-left: 0.28rem;
}

.footer__meta {
  border-top: 1px solid var(--line);
  background: rgba(10, 14, 23, 0.65);
  padding-block: 1.35rem;
}

.footer__contact {
  font-size: 0.8rem;
  line-height: 1.9;
  color: var(--steel);
}

.footer__legal {
  margin-top: 0.4rem;
  font-size: 0.74rem;
  letter-spacing: 0.07em;
  color: var(--steel);
}

.footer__legal span[data-year] {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--chalk);
}

/* =========================================================
   通用组件
   ========================================================= */
.container {
  width: var(--shell);
  margin-inline: auto;
}

.section { padding-block: clamp(2.8rem, 7vw, 6rem); }
.section--tight { padding-block: clamp(1.4rem, 3vw, 2.6rem); }

.section--paper {
  background: var(--paper);
  color: var(--panel);
}

.section--paper h1,
.section--paper h2,
.section--paper h3,
.section--paper h4 { color: var(--panel); }

.section--paper .eyebrow,
.section--paper .label { color: #55617A; }

.section--paper a { color: #0A5E70; }

/* 左右分屏系统 */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

/* 12 栏骨架 */
.grid {
  display: grid;
  gap: 1.25rem;
}

.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-6 { grid-column: span 6; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

/* 文字层级 */
.eyebrow,
.label {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
}

.display {
  font-size: clamp(2.6rem, 6vw, 5.5rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.data-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.68rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: var(--panel);
  color: var(--chalk);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  white-space: nowrap;
  cursor: pointer;
  transition: border-color 0.18s ease, color 0.18s ease, background 0.18s ease,
              box-shadow 0.14s ease, transform 0.18s ease;
}

.btn:hover { border-color: var(--gold); color: var(--gold); }
.btn:active { box-shadow: inset 0 3px 7px rgba(0, 0, 0, 0.5); transform: translateY(1px); }

.btn--gold {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.btn--gold:hover {
  background: #FFD65E;
  border-color: #FFD65E;
  color: var(--ink);
}

.btn--ghost { background: transparent; }

/* 面板与卡片 */
.panel {
  background: var(--panel-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  padding: clamp(1.1rem, 2.4vw, 1.8rem);
}

.panel--solid {
  background: var(--panel);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.card {
  position: relative;
  display: block;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.1rem, 2.2vw, 1.5rem);
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.card:hover,
.card:focus-within {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.card__label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 0.6rem;
}

.card__title {
  font-size: clamp(1.05rem, 1.7vw, 1.3rem);
  font-weight: 800;
  color: var(--chalk);
}

.card__more {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.82rem;
  color: var(--cyan);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.22s ease, transform 0.22s ease;
}

.card:hover .card__more,
.card:focus-within .card__more {
  opacity: 1;
  transform: translateY(0);
}

/* 数据指标 */
.stat {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.stat__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.stat__label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
}

/* 标签与状态点 */
.tag {
  display: inline-block;
  padding: 0.18rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
}

.tag--gold { background: var(--gold); border-color: var(--gold); color: var(--ink); }
.tag--red { background: var(--red); border-color: var(--red); color: var(--chalk); }
.tag--cyan { border-color: rgba(0, 229, 255, 0.55); color: var(--cyan); }

.dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--steel);
  flex: none;
}

.dot--live {
  background: var(--mint);
  box-shadow: 0 0 0 3px rgba(43, 217, 168, 0.2);
}

/* 媒体容器 */
.media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 90% at 12% 8%, rgba(0, 229, 255, 0.14), transparent 60%),
    linear-gradient(150deg, var(--panel), #0c1120 72%);
  isolation: isolate;
}

.media > img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(118deg, rgba(0, 229, 255, 0.14) 0%, transparent 46%, rgba(255, 199, 44, 0.14) 100%);
}

.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--wide { aspect-ratio: 21 / 9; }

.media__tag {
  position: absolute;
  z-index: 3;
  left: 0.85rem;
  top: 0.85rem;
  padding: 0.18rem 0.55rem;
  border-radius: 4px;
  background: rgba(10, 14, 23, 0.82);
  border: 1px solid var(--line);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}

/* 面包屑 */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--steel);
}

.breadcrumbs li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumbs li + li::before {
  content: "/";
  color: var(--line);
}

.breadcrumbs a { color: var(--steel); transition: color 0.18s ease; }
.breadcrumbs a:hover { color: var(--cyan); }
.breadcrumbs [aria-current="page"] { color: var(--chalk); }

/* 长文容器 */
.prose {
  max-width: 72ch;
  color: var(--chalk);
}

.prose > * + * { margin-top: 1rem; }

.prose h2 { margin-top: 2.2rem; }
.prose h3 { margin-top: 1.6rem; }

.prose ul,
.prose ol {
  padding-left: 1.2rem;
  list-style: disc;
}

.prose ol { list-style: decimal; }
.prose li + li { margin-top: 0.4rem; }

.prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.section--paper .prose { color: var(--panel); }
.section--paper .prose a { color: #0A5E70; }

/* 显现动画（需要 JS 打上 html.js 才生效） */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

html.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* 返回顶部 */
.to-top {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  z-index: 90;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--gold);
  border-radius: 50%;
  background: var(--gold);
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
}

.to-top[data-visible="true"] {
  opacity: 1;
  visibility: visible;
  transform: none;
}

/* =========================================================
   断点
   ========================================================= */
@media (max-width: 1100px) {
  .masthead__issue { display: none; }
  .masthead__inner { grid-template-columns: auto 1fr; }
  .masthead__brand { grid-column: 1; align-items: flex-start; }
  .masthead__utility { grid-column: 2; }
}

@media (max-width: 960px) {
  .split { grid-template-columns: minmax(0, 1fr); }
  .grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-3 { grid-column: span 3; }
  .col-4 { grid-column: span 6; }
  .col-6 { grid-column: span 6; }
  .col-8 { grid-column: span 6; }
}

@media (max-width: 900px) {
  .grid--12 > * { grid-column: 1 / -1; }
}

@media (max-width: 880px) {
  :root { --shell: min(1240px, 100% - 2rem); }

  .masthead__inner {
    grid-template-columns: 1fr auto;
    gap: 0.75rem;
    padding-block: 0.85rem;
  }

  .masthead__brand {
    grid-column: 1;
    align-items: flex-start;
  }

  .masthead__name { font-size: 1.5rem; letter-spacing: 0.12em; }

  .masthead__desc { font-size: 10px; letter-spacing: 0.22em; }

  .masthead__issue { display: none; }

  .masthead__utility { display: none; }

  .nav-toggle {
    display: inline-flex;
    grid-column: 2;
    justify-self: end;
  }

  .site-header[data-condensed="true"] .masthead__name { font-size: 1.25rem; }

  .primary-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    background: rgba(10, 14, 23, 0.98);
    border-bottom: 1px solid var(--line);
    transition: max-height 0.28s ease, visibility 0.28s;
  }

  .primary-nav[data-open="true"] {
    max-height: 78vh;
    overflow-y: auto;
    visibility: visible;
  }

  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.4rem 1.25rem 1.3rem;
  }

  .primary-nav__link {
    padding: 0.9rem 0.2rem;
    border-bottom: 1px solid var(--line);
    font-size: 0.95rem;
  }

  .primary-nav__link::after {
    left: 0.2rem;
    right: auto;
    width: 26px;
    bottom: 0.42rem;
  }
}

@media (min-width: 720px) {
  .footer__cols { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 960px) {
  .split { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
  .split--reverse { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
}

@media (min-width: 900px) {
  .footer__top { grid-template-columns: minmax(220px, 4fr) 8fr; }
}

@media (max-width: 520px) {
  body { font-size: 15.5px; }
  .footer__cols { grid-template-columns: minmax(0, 1fr); }
  .btn { padding: 0.6rem 0.95rem; font-size: 0.78rem; }
}

/* ---------- 无障碍：减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  html.js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .card:hover,
  .card:focus-within { transform: none; }
}