/* ===== 小鸟体育CN · 共享样式 /assets/site.css ===== */
:root {
  --paper: #F5F0E8;
  --paper-bright: #FFFDF9;
  --ink: #1A1A1A;
  --ink-soft: #4A4A4A;
  --orange: #FF5A00;
  --space-blue: #0B1B3A;
  --space-blue-deep: #081226;
  --space-blue-soft: #162A50;
  --acid: #B8FF00;
  --warm-gray: #E8E0D5;
  --line: rgba(26,26,26,0.16);
  --line-light: rgba(255,255,255,0.14);
  --font-display: "Segoe UI", "Helvetica Neue", sans-serif;
  --font-body: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-data: "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --container: 1200px;
  --container-pad: clamp(1rem, 3vw, 2rem);
  --cut: 12px;
  --shadow-soft: 0 8px 24px rgba(26,26,26,0.08);
  --shadow-lift: 0 18px 40px rgba(11,27,58,0.18);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--paper);
  background-image: repeating-linear-gradient(135deg, transparent 0 22px, rgba(26,26,26,0.028) 22px 23px);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: var(--font-display); color: var(--ink); line-height: 1.15; }
p { margin-bottom: 1rem; }

a { color: var(--ink); text-decoration-thickness: 2px; text-decoration-color: var(--acid); text-underline-offset: 3px; }
a:hover { color: var(--orange); text-decoration-color: var(--orange); }
.section--dark a, .site-footer a, .site-header a { text-decoration-color: var(--orange); }

::selection { background: var(--acid); color: var(--ink); }
[hidden] { display: none !important; }

:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }
.site-header :focus-visible, .site-footer :focus-visible, .section--dark :focus-visible { outline-color: var(--acid); }

/* 布局 */
.container { width: min(var(--container), 100% - 2 * var(--container-pad)); margin-inline: auto; }
.section { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.section--tint { background: var(--warm-gray); }
.section--dark { background: var(--space-blue); color: #C7CFDF; }
.section--dark h1, .section--dark h2, .section--dark h3 { color: var(--paper-bright); }
.section-head { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 1rem 2rem; margin-bottom: clamp(2rem, 5vw, 3.5rem); padding-bottom: 1.5rem; border-bottom: 1px solid var(--line); }
.section-head--center { display: block; text-align: center; }
@media (max-width: 720px) { .section-head { grid-template-columns: 1fr; } }

/* 文字 */
.kicker { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--font-display); font-weight: 600; font-size: .78rem; letter-spacing: .28em; text-transform: uppercase; color: var(--orange); }
.kicker::before { content: ""; width: 26px; height: 12px; flex: none; background: var(--acid); clip-path: polygon(0 38%, 100% 38%, 86% 62%, 0 62%); }
.section-title { font-family: var(--font-display); font-weight: 100; font-size: clamp(2.4rem, 7vw, 4.5rem); line-height: 1.04; margin-top: .2rem; }
.display-title { font-family: var(--font-display); font-weight: 100; font-size: clamp(3rem, 8vw, 6rem); line-height: .98; letter-spacing: -0.01em; }
.intro { color: var(--ink-soft); font-size: 1.08rem; max-width: 60ch; line-height: 1.8; }
.section--dark .intro { color: #C7CFDF; }
.page-title-block { padding-block: clamp(2.5rem, 6vw, 4.5rem); border-bottom: 1px solid var(--line); margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.page-title-block .kicker { margin-bottom: .6rem; }
.page-title { font-family: var(--font-display); font-weight: 100; font-size: clamp(2.6rem, 7vw, 4.5rem); line-height: 1; }
.page-lead { color: var(--ink-soft); max-width: 62ch; margin-top: 1rem; font-size: 1.05rem; }

/* 主体 */
.main-content { flex: 1 0 auto; }
#main-content { scroll-margin-top: 120px; }

/* 跳过链接 */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 400;
  padding: 10px 18px;
  background: var(--ink);
  color: var(--acid);
  font-weight: 600;
  font-size: .9rem;
  text-decoration: none;
  transform: translateY(-400%);
  transition: transform .2s ease;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}
.skip-link:focus { transform: translateY(0); }

/* 滚动进度 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  z-index: 500;
  pointer-events: none;
  background: linear-gradient(90deg, var(--orange), #FF7A1A);
}

/* 头部 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--space-blue);
  color: var(--paper-bright);
}
.header-inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 78px;
  padding-block: .65rem;
}
.mast-brand { display: inline-flex; align-items: center; gap: .6rem; text-decoration: none; flex-shrink: 0; }
.mast-brand-mark {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  background: var(--orange);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 1.05rem;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
}
.mast-brand-name { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.4rem, 2.6vw, 1.8rem); line-height: 1; color: var(--paper-bright); }
.mast-brand-name em { font-style: normal; color: var(--acid); }
.mast-status { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--font-data); font-size: .78rem; letter-spacing: .05em; color: var(--acid); }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--orange); animation: status-pulse 1.6s infinite; }
@keyframes status-pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .45; transform: scale(.8); } }
.site-nav { display: flex; align-items: center; gap: clamp(1.1rem, 2.4vw, 1.9rem); }
.site-nav a { position: relative; color: rgba(255,253,249,.88); text-decoration: none; font-size: .95rem; letter-spacing: .04em; padding-block: .3rem; white-space: nowrap; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: -3px; height: 3px; background: var(--orange); transform: scaleX(0); transform-origin: left; transition: transform .22s ease; }
.site-nav a:hover::after, .site-nav a:focus-visible::after, .site-nav a[aria-current="page"]::after { transform: scaleX(1); }
.site-nav a[aria-current="page"] { color: var(--paper-bright); font-weight: 700; }
.nav-toggle { display: none; align-items: center; gap: .5rem; padding: .5rem .8rem; background: transparent; border: 1px solid var(--line-light); color: var(--paper-bright); font-family: var(--font-body); font-size: .82rem; cursor: pointer; }
.nav-toggle-bars { display: inline-flex; flex-direction: column; gap: 4px; width: 18px; }
.nav-toggle-bars span { display: block; height: 2px; background: var(--acid); width: 100%; transition: transform .2s, opacity .2s; }
.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-text { font-weight: 600; letter-spacing: .06em; }
.header-tape { height: 4px; background: linear-gradient(90deg, var(--orange) 0%, var(--orange) 76%, var(--acid) 76%, var(--acid) 100%); }

@media (max-width: 1100px) { .mast-status { display: none; } }

@media (max-width: 900px) {
  .site-nav {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    z-index: 60;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: .4rem;
    background: var(--space-blue-soft);
    border-bottom: 4px solid var(--orange);
    box-shadow: var(--shadow-lift);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity .2s ease, transform .2s ease, visibility .2s;
  }
  .site-nav[data-open] { visibility: visible; opacity: 1; transform: none; }
  .site-nav a { display: block; padding: 1rem 1.25rem; font-size: 1rem; border-left: 3px solid transparent; }
  .site-nav a + a { padding-left: 1.25rem; }
  .site-nav a::after { display: none; }
  .site-nav a:hover, .site-nav a[aria-current="page"] { background: rgba(255,255,255,.07); border-left-color: var(--acid); color: var(--paper-bright); }
  .nav-toggle { display: inline-flex; }
  .header-inner { min-height: 68px; }
}

/* 页脚 */
.site-footer { background: var(--space-blue); color: #C7CFDF; margin-top: auto; }
.footer-tape { height: 4px; background: linear-gradient(90deg, var(--acid) 0%, var(--acid) 12%, var(--orange) 12%, var(--orange) 84%, var(--acid) 84%); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.35fr; gap: clamp(1.5rem, 4vw, 3rem); padding-block: 3.5rem 2.5rem; }
.footer-brand { display: flex; flex-direction: column; align-items: flex-start; }
.footer-brand-name { font-family: var(--font-display); font-weight: 600; font-size: 2rem; color: var(--paper-bright); text-decoration: none; }
.footer-brand-name em { font-style: normal; color: var(--acid); }
.footer-desc { margin-top: .8rem; max-width: 36ch; font-size: .95rem; line-height: 1.8; color: #A9B4C6; }
.footer-cert { display: inline-block; margin-top: 1rem; padding: .35rem .7rem; border: 1px solid var(--line-light); font-family: var(--font-data); font-size: .72rem; color: var(--acid); }
.footer-col { display: flex; flex-direction: column; gap: .55rem; }
.footer-col-title { margin-bottom: .55rem; font-family: var(--font-body); font-size: .78rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; color: var(--orange); }
.footer-col-title::before { content: "// "; color: var(--acid); }
.footer-col a { color: #C7CFDF; text-decoration: none; font-size: .95rem; transition: color .2s, padding-left .2s; }
.footer-col a:hover { color: var(--acid); padding-left: 4px; }
.footer-contact-block { display: flex; flex-direction: column; }
.footer-contact-block p, .footer-contact-block address { margin: .35rem 0; font-style: normal; font-size: .95rem; color: #C7CFDF; }
.footer-phone { font-family: var(--font-data); font-size: 1.35rem; font-weight: 600; color: var(--paper-bright); }
.footer-email { font-family: var(--font-data); color: var(--acid); word-break: break-all; }
.footer-contact-note { line-height: 1.8; font-size: .86rem; color: #8B97A9; }
.footer-bottom { background: var(--space-blue-deep); border-top: 1px solid var(--line-light); padding-block: 1.1rem; }
.footer-bottom-inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: .75rem; font-size: .82rem; color: #8B97A9; }
.footer-bottom-inner p { margin-bottom: 0; }
.footer-bottom-slogan { font-family: var(--font-data); letter-spacing: .04em; color: var(--acid); }

@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .footer-grid { grid-template-columns: 1fr; } }

/* 按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; padding: .8rem 1.5rem; font: 600 .95rem/1 var(--font-body); color: var(--ink); background: var(--paper-bright); border: 1px solid var(--ink); text-decoration: none; cursor: pointer; clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px)); transition: transform .18s, box-shadow .18s, background .18s, color .18s; }
.btn:hover { transform: translate(-2px, -2px); box-shadow: 4px 4px 0 var(--ink); }
.btn:active { transform: none; box-shadow: none; }
.btn--primary { background: var(--orange); border-color: var(--orange); color: var(--ink); }
.btn--dark { background: var(--space-blue); border-color: var(--space-blue); color: var(--paper-bright); }
.btn--ghost { background: transparent; border-color: var(--line-light); color: var(--paper-bright); }
.btn--ghost:hover { box-shadow: 4px 4px 0 var(--acid); }
.btn--sm { padding: .5rem 1rem; font-size: .82rem; }

/* 面板与卡片 */
.panel { position: relative; background: var(--paper-bright); border: 1px solid var(--line); padding: clamp(1.25rem, 3vw, 2rem); box-shadow: var(--shadow-soft); }
.panel--corner::before { content: ""; position: absolute; top: -1px; right: -1px; width: 0; height: 0; border-style: solid; border-width: 0 30px 30px 0; border-color: transparent var(--orange) transparent transparent; }
.panel--dark { background: var(--space-blue); color: var(--paper-bright); border-color: transparent; }
.panel--dark h1, .panel--dark h2, .panel--dark h3 { color: var(--paper-bright); }
.panel--tint { background: var(--warm-gray); border-color: transparent; }
.card { display: block; background: var(--paper-bright); border: 1px solid var(--line); text-decoration: none; color: var(--ink); transition: transform .2s, box-shadow .2s; }
.card:hover { transform: translate(-3px, -3px); box-shadow: 6px 6px 0 rgba(11,27,58,.12); }
.card__body { padding: 1.5rem; }
.card__meta { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: .8rem; }
.card__title { font-family: var(--font-display); font-weight: 600; font-size: 1.35rem; line-height: 1.2; margin-bottom: .4rem; }
.card__text { font-size: .95rem; color: var(--ink-soft); }

/* 数据视觉 */
.live-chip { display: inline-flex; align-items: center; gap: .45rem; font-family: var(--font-data); font-size: .82rem; color: var(--space-blue); }
.live-chip::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 0 rgba(255,90,0,.55); animation: status-pulse 1.8s infinite; }
.data-num { font-family: var(--font-data); font-weight: 600; font-size: 1.2rem; color: var(--orange); }
.data-num--lg { font-size: clamp(2.2rem, 5vw, 3.4rem); line-height: 1; }
.data-num--light { color: var(--acid); }
.table-wrap { overflow-x: auto; background: var(--paper-bright); border: 1px solid var(--line); }
.data-table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.data-table th { padding: .75rem 1rem; text-align: left; font-family: var(--font-data); font-size: .76rem; letter-spacing: .06em; color: var(--ink-soft); background: var(--warm-gray); white-space: nowrap; }
.data-table td { padding: .75rem 1rem; border-top: 1px solid var(--line); }
.data-table tbody tr:hover td { background: rgba(184,255,0,.08); }

/* 标签与筛选 */
.tag-list { display: flex; flex-wrap: wrap; gap: .6rem; }
.tag { display: inline-flex; align-items: center; gap: .35rem; padding: .32rem .72rem; font-size: .76rem; font-weight: 700; letter-spacing: .06em; background: var(--warm-gray); color: var(--ink-soft); border: 0; }
.tag--live { background: var(--ink); color: var(--acid); }
.tag--orange { background: var(--orange); color: var(--ink); }
.tag--blue { background: var(--space-blue); color: var(--paper-bright); }
.tag--acid { background: var(--acid); color: var(--ink); }
.filter-bar { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 2rem; }
[data-filter-btn] { padding: .5rem 1.1rem; font-family: var(--font-body); font-size: .85rem; font-weight: 700; color: var(--ink-soft); background: var(--warm-gray); border: 1px solid transparent; cursor: pointer; transition: background .18s, color .18s, border-color .18s; }
[data-filter-btn]:hover { border-color: var(--orange); color: var(--ink); }
[data-filter-btn].is-active, [data-filter-btn][aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--acid); }

/* 编辑索引 */
.index-list { display: grid; gap: .75rem; list-style: none; }
.index-list li { display: grid; grid-template-columns: 3.2rem 1fr auto; align-items: baseline; gap: 1rem; padding-block: .75rem; border-bottom: 1px solid var(--line); }
.index-list__num { font-family: var(--font-data); font-weight: 600; font-size: .85rem; color: var(--orange); }
.index-list__title { font-weight: 600; color: var(--ink); text-decoration: none; }
.index-list__title:hover { color: var(--orange); }
.index-list__meta { font-size: .8rem; font-family: var(--font-data); color: var(--ink-soft); }
@media (max-width: 720px) { .index-list li { grid-template-columns: 2.2rem 1fr; } .index-list__meta { grid-column: 2; } }

/* 时间线 */
.timeline { position: relative; list-style: none; padding-left: 2rem; display: grid; gap: 1.75rem; margin-left: .5rem; }
.timeline::before { content: ""; position: absolute; left: 4px; top: 4px; bottom: 4px; width: 2px; background: repeating-linear-gradient(to bottom, var(--orange) 0 10px, var(--warm-gray) 10px 16px); }
.timeline__item { position: relative; }
.timeline__item::before { content: ""; position: absolute; left: -2rem; top: .3rem; width: 11px; height: 11px; background: var(--paper); border: 3px solid var(--space-blue); clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%); }
.timeline__date { font-family: var(--font-data); font-size: .8rem; letter-spacing: .05em; color: var(--orange); }
.timeline__title { font-weight: 700; font-size: 1.05rem; }

/* 栅格 */
.grid { display: grid; gap: clamp(1.25rem, 3vw, 2rem); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-1-2 { grid-template-columns: 1fr 1.2fr; }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-2, .grid-3, .grid-4, .grid-1-2 { grid-template-columns: 1fr; } }

/* 图片 */
.img-box { position: relative; overflow: hidden; display: block; background: var(--space-blue); }
.img-box::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(135deg, rgba(255,90,0,.16) 0%, transparent 44%, rgba(184,255,0,.10) 100%); }
.img-box img { display: block; width: 100%; height: 100%; object-fit: cover; }
.img-box-16x9 { aspect-ratio: 16 / 9; }
.img-box-4x3 { aspect-ratio: 4 / 3; }
.img-box-3x2 { aspect-ratio: 3 / 2; }
.img-box-21x9 { aspect-ratio: 21 / 9; }

/* 杂项 */
.diag-stripe { height: 6px; background: repeating-linear-gradient(-45deg, var(--orange) 0 12px, transparent 12px 24px); }
.diag-stripe--acid { background: repeating-linear-gradient(-45deg, var(--acid) 0 12px, transparent 12px 24px); }
.breadcrumbs ul { display: flex; flex-wrap: wrap; list-style: none; gap: .5rem; align-items: center; font-size: .85rem; color: var(--ink-soft); }
.breadcrumbs a { color: var(--ink); text-decoration: none; }
.breadcrumbs a:hover { color: var(--orange); }
.breadcrumbs li + li::before { content: "→"; margin-right: .5rem; color: var(--orange); font-family: var(--font-data); }
.note { display: flex; align-items: flex-start; gap: .75rem; padding: 1rem 1.25rem; background: var(--warm-gray); border-left: 4px solid var(--orange); font-size: .88rem; color: var(--ink-soft); }
.note::before { content: "!"; flex: none; width: 18px; height: 18px; display: grid; place-items: center; background: var(--orange); color: var(--ink); font-family: var(--font-data); font-weight: 800; }

/* 显现动效 */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .55s ease, transform .55s ease; }
[data-reveal].is-revealed { opacity: 1; transform: none; }

/* 减少动态 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}