/* ============================================================
   四季体育安装 · 共享样式 /assets/site.css
   夜场转播室 × 数据归档库
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 128px;
}

body, h1, h2, h3, h4, h5, p, ul, ol, dl, dd, figure, blockquote {
  margin: 0;
}

ul, ol { padding: 0; list-style: none; }

img, svg { display: block; max-width: 100%; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

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

input, textarea, select { font: inherit; color: inherit; }

[hidden] { display: none !important; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink: #061713;
  --panel: #0B241D;
  --panel-2: #123B30;
  --accent: #3BF0D0;
  --season: #FF8A3D;
  --paper: #F3F8F5;
  --muted: #9AB5AB;
  --line: #1E3A31;
  --teal: #1F8F7A;
  --alert: #FF6B5E;

  --accent-soft: rgba(59, 240, 208, 0.12);
  --season-soft: rgba(255, 138, 61, 0.16);
  --panel-veil: rgba(18, 59, 48, 0.35);

  --font-display: "Arial Narrow", "Helvetica Neue Condensed", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --wrap: 1280px;
  --gutter: clamp(18px, 5vw, 64px);
  --radius-s: 10px;
  --radius-m: 18px;
  --radius-l: 28px;
  --shadow-deep: 0 24px 60px -34px rgba(0, 0, 0, 0.95);
}

/* ---------- 3. Base ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink);
  background-image:
    radial-gradient(circle at 12% -8%, rgba(59, 240, 208, 0.11), transparent 46%),
    radial-gradient(circle at 92% 2%, rgba(31, 143, 122, 0.16), transparent 52%),
    linear-gradient(rgba(30, 58, 49, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 58, 49, 0.22) 1px, transparent 1px);
  background-size: auto, auto, 72px 72px, 72px 72px;
  background-attachment: fixed, fixed, scroll, scroll;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--paper);
}

h1 { font-size: clamp(34px, 6vw, 72px); }
h2 { font-size: clamp(24px, 3.2vw, 40px); }
h3 { font-size: clamp(18px, 2vw, 22px); }

p { max-width: 72ch; }

::selection {
  background: var(--accent);
  color: #04120F;
}

:where(a, button, input, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 4. Utilities ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.mono-label {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.4;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.mono-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

.lead {
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.85;
  color: var(--muted);
  max-width: 68ch;
}

.rule {
  height: 1px;
  border: 0;
  margin-block: clamp(28px, 5vw, 56px);
  background: linear-gradient(90deg, var(--line), rgba(30, 58, 49, 0.15));
}

/* ---------- 5. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-veil);
  color: var(--paper);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.btn:hover {
  transform: translateY(-2px);
  border-color: var(--teal);
}

.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #04120F;
}

.btn--primary:hover {
  background: #69F5DC;
  border-color: #69F5DC;
}

.btn--ghost {
  background: transparent;
}

/* ---------- 6. Chips ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-veil);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.4;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.chip--season {
  background: var(--season);
  border-color: var(--season);
  color: #07130F;
  font-weight: 700;
}

/* ---------- 7. Breadcrumb ---------- */
.breadcrumb {
  padding-block: 16px clamp(18px, 3vw, 28px);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.breadcrumb__link {
  color: var(--muted);
  transition: color 0.16s ease;
}

.breadcrumb__link:hover { color: var(--accent); }

.breadcrumb__sep {
  color: var(--teal);
  font-size: 11px;
}

/* ---------- 8. Panels ---------- */
.panel {
  padding: clamp(20px, 2.4vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--panel);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.panel:hover {
  transform: translateY(-2px);
  border-color: var(--teal);
}

/* ---------- 9. Figure (image base) ---------- */
.figure {
  display: grid;
  gap: 10px;
}

.figure__frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background:
    radial-gradient(circle at 24% 18%, rgba(59, 240, 208, 0.18), transparent 58%),
    linear-gradient(148deg, var(--panel-2), var(--ink));
}

.figure__frame--wide { aspect-ratio: 21 / 9; }
.figure__frame--tall { aspect-ratio: 4 / 5; }

.figure__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.86) contrast(1.05) brightness(0.92) hue-rotate(-6deg);
}

.figure__caption {
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 10. Skip link ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 12px 18px;
  border-radius: var(--radius-s);
  background: var(--accent);
  color: #04120F;
  font-size: 14px;
  font-weight: 700;
  transform: translateY(-180%);
  transition: transform 0.18s ease;
}

.skip-link:focus-visible { transform: translateY(0); }

/* ---------- 11. Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(6, 23, 19, 0.97);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 20px 46px -38px rgba(0, 0, 0, 0.95);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: clamp(64px, 18vw, 220px);
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.masthead { position: relative; }

.masthead__inner {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 20px var(--gutter) 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  transition: padding-top 0.2s ease;
}

.masthead__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  max-width: none;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
  letter-spacing: 0.06em;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.masthead__sep {
  color: var(--teal);
  font-family: var(--font-mono);
}

.masthead__text {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* brand lockup */
.brand {
  justify-self: center;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 4px;
}

.brand__mark {
  flex: none;
  width: 34px;
  height: 34px;
  color: var(--accent);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.brand__tag {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  transition: opacity 0.2s ease;
}

/* tools */
.masthead__tools {
  justify-self: end;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 8px;
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-veil);
  color: var(--paper);
  font-size: 12.5px;
  line-height: 1;
  white-space: nowrap;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.tool-btn:hover {
  transform: translateY(-1px);
  border-color: var(--teal);
  background: rgba(31, 143, 122, 0.24);
}

.tool-btn--accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #04120F;
  font-weight: 700;
}

.tool-btn--accent:hover {
  background: #69F5DC;
  border-color: #69F5DC;
}

.tool-btn--drawer {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

/* nav toggle */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-veil);
  color: var(--paper);
  font-size: 12.5px;
  line-height: 1;
  transition: border-color 0.18s ease, background 0.18s ease;
}

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

.nav-toggle__bars {
  display: inline-grid;
  gap: 3px;
  width: 16px;
}

.nav-toggle__bar {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ---------- 12. Main navigation ---------- */
.mainnav {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 0 var(--gutter);
  visibility: visible;
}

.mainnav__list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: clamp(4px, 1.8vw, 26px);
  padding-top: 8px;
}

.mainnav__link {
  position: relative;
  display: inline-block;
  padding: 12px 4px 14px;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--muted);
  transition: color 0.18s ease;
}

.mainnav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 6px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.2s ease, background 0.2s ease;
}

.mainnav__link:hover { color: var(--paper); }
.mainnav__link:hover::after { transform: scaleX(1); }

.mainnav__link[aria-current="page"] {
  color: var(--paper);
  font-weight: 700;
}

.mainnav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--season);
}

/* ---------- 13. Header condensed state ---------- */
[data-condensed="true"] .masthead__inner { padding-top: 8px; }

[data-condensed="true"] .masthead__meta {
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
}

[data-condensed="true"] .brand__tag { opacity: 0; }

[data-condensed="true"] .mainnav__link { padding-block: 10px 12px; }

/* ---------- 14. Search panel ---------- */
.search-panel {
  max-height: 0;
  overflow: hidden;
  visibility: hidden;
  opacity: 0;
  border-top: 1px solid transparent;
  transition: max-height 0.22s ease, opacity 0.16s ease, visibility 0.22s ease, border-color 0.22s ease;
}

.search-panel[data-open="true"] {
  max-height: 26rem;
  visibility: visible;
  opacity: 1;
  border-top-color: var(--line);
}

.search-panel__inner {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 18px var(--gutter) 26px;
  display: grid;
  gap: 10px;
}

.search-panel__label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.search-panel__input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  color: var(--paper);
  font-size: 16px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.search-panel__input::placeholder { color: rgba(154, 181, 171, 0.7); }

.search-panel__input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.search-panel__results {
  display: grid;
  gap: 2px;
}

.search-panel__results:empty { display: none; }

.search-panel__result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border: 1px solid transparent;
  border-radius: 12px;
  transition: background 0.16s ease, border-color 0.16s ease;
}

.search-panel__result:hover,
.search-panel__result:focus-within {
  background: var(--panel-2);
  border-color: var(--line);
}

.search-panel__hit {
  font-size: 14.5px;
  color: var(--paper);
}

.search-panel__route {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.search-panel__hint {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 15. Drawer + scrim ---------- */
.scrim {
  position: fixed;
  inset: 0;
  z-index: 70;
  background: rgba(3, 12, 10, 0.68);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.scrim[data-open="true"] {
  opacity: 1;
  pointer-events: auto;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 80;
  width: min(360px, 88vw);
  padding: 22px 22px 34px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
  background: var(--panel);
  border-left: 1px solid var(--line);
  box-shadow: var(--shadow-deep);
  transform: translateX(102%);
  visibility: hidden;
  transition: transform 0.22s ease, visibility 0.22s ease;
}

.drawer[data-open="true"] {
  transform: translateX(0);
  visibility: visible;
}

.drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.drawer__close {
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  line-height: 1;
  color: var(--muted);
  transition: color 0.16s ease, border-color 0.16s ease;
}

.drawer__close:hover {
  color: var(--paper);
  border-color: var(--accent);
}

.drawer__title {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  color: var(--paper);
}

.drawer__list {
  display: grid;
  gap: 6px;
}

.drawer__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(18, 59, 48, 0.3);
  transition: border-color 0.16s ease, background 0.16s ease;
}

.drawer__row:hover {
  border-color: var(--teal);
  background: rgba(31, 143, 122, 0.2);
}

.drawer__link {
  font-size: 14.5px;
  color: var(--paper);
}

.drawer__meta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--accent);
}

.drawer__note {
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--muted);
  border-top: 1px dashed var(--line);
  padding-top: 14px;
}

/* ---------- 16. Footer ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 10vw, 120px);
  padding-block: clamp(40px, 6vw, 76px) 28px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(11, 36, 29, 0.6), var(--ink) 62%);
}

.footer__inner {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.5fr) minmax(0, 1.1fr);
  gap: clamp(26px, 4vw, 56px);
  padding-bottom: clamp(26px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
}

.footer__brandblock { display: grid; align-content: start; gap: 12px; }

.footer__brand {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.footer__brandline {
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 30ch;
}

.footer__cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
}

.footer__col { display: grid; align-content: start; }

.footer__coltitle {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.footer__links { display: grid; gap: 10px; }

.footer__link {
  display: inline-block;
  font-size: 14.5px;
  color: var(--muted);
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.footer__link:hover {
  color: var(--paper);
  border-bottom-color: var(--accent);
}

.footer__contact { display: grid; align-content: start; }

.footer__facts { display: grid; gap: 12px; }

.footer__fact { display: grid; gap: 2px; }

.footer__fact dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
}

.footer__fact dd {
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.footer__note {
  margin-top: 16px;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--muted);
  padding-left: 12px;
  border-left: 2px solid var(--line);
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  padding-top: 22px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.footer__copy { max-width: none; }

.footer__icp {
  max-width: none;
  padding: 4px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--paper);
}

.footer__legalnote {
  max-width: 46ch;
  color: rgba(154, 181, 171, 0.85);
}

/* ---------- 17. Responsive ---------- */
@media (max-width: 1080px) {
  .footer__top {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    row-gap: 34px;
  }
  .footer__contact { grid-column: 1 / -1; }
  .footer__facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 1024px) {
  .tool-btn--drawer { display: none; }
}

@media (max-width: 920px) {
  html { scroll-padding-top: 96px; }

  .masthead__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    padding-bottom: 12px;
  }

  .masthead__meta { display: none; }

  .brand { justify-self: start; }

  .masthead__tools { justify-self: end; gap: 6px; }

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

  .mainnav {
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    opacity: 0;
    border-top: 1px solid var(--line);
    transition: max-height 0.24s ease, opacity 0.18s ease, visibility 0.24s ease;
  }

  .mainnav[data-open="true"] {
    max-height: 34rem;
    visibility: visible;
    opacity: 1;
  }

  .mainnav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0 14px;
  }

  .mainnav__link {
    display: block;
    padding: 14px 2px;
    font-size: 15px;
    border-bottom: 1px solid var(--line);
  }

  .mainnav__link::after { display: none; }

  .mainnav__link[aria-current="page"] { color: var(--accent); }

  [data-condensed="true"] .mainnav__link { padding-block: 14px; }
}

@media (max-width: 760px) {
  .tool-btn[data-search-toggle] { display: none; }

  .masthead__inner { padding-top: 14px; }

  .brand__mark { width: 30px; height: 30px; }

  .brand__tag { font-size: 9px; letter-spacing: 0.16em; }

  .tool-btn--accent { padding: 9px 12px; font-size: 12px; }

  .nav-toggle__label { display: none; }

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

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

  .footer__legal { gap: 8px 14px; font-size: 11px; }

  .footer__legalnote { max-width: none; }
}

@media (max-width: 420px) {
  .brand__tag { display: none; }

  .mainnav__link { font-size: 14.5px; }
}

/* ---------- 18. Reduced motion ---------- */
@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;
    scroll-behavior: auto !important;
  }

  .panel:hover,
  .btn:hover,
  .tool-btn:hover { transform: none; }
}