/* =========================================================
   星空体育官网 / 共享样式
   /assets/site.css
   ========================================================= */

/* ---------- 1. reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
ul, ol { list-style: none; padding: 0; }
img, picture, svg, video { display: block; max-width: 100%; height: auto; }
table { border-collapse: collapse; border-spacing: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #050A18;
  --ink-2: #0B1428;
  --ink-3: #121D38;
  --line: #24365C;
  --gold: #F2C24B;
  --cyan: #4FD8E8;
  --rose: #FF4D7E;
  --green: #2EE6A8;
  --text: #E8ECF5;
  --muted: #9AA6BF;

  --shell: 1320px;
  --pad: clamp(18px, 4vw, 44px);
  --radius: 2px;

  --font-display: "Inter Tight", "HarmonyOS Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", "Cascadia Mono", "Roboto Mono", Menlo, Consolas, "PingFang SC", monospace;

  --cut: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
  --cut-sm: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 9px 100%, 0 calc(100% - 9px));

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 620px at 78% -12%, rgba(79, 216, 232, .09), transparent 62%),
    radial-gradient(900px 540px at 6% 4%, rgba(242, 194, 75, .07), transparent 60%);
  background-repeat: no-repeat;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: .008em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.012em;
  color: var(--text);
}

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

p { text-wrap: pretty; }

::selection { background: rgba(242, 194, 75, .3); color: #fff; }

#main-content { display: block; scroll-margin-top: 148px; }

/* ---------- 4. 焦点与无障碍 ---------- */
:where(a, button, summary, input, select, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 1px;
}

.skip-link {
  position: fixed;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  padding: 11px 20px;
  background: var(--gold);
  color: #08111F;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  text-decoration: none;
  clip-path: var(--cut-sm);
  transition: top .22s var(--ease);
}
.skip-link:focus { top: 10px; text-decoration: none; }

/* ---------- 5. 布局 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.grid { display: grid; gap: clamp(18px, 2.6vw, 34px); }
.grid--split { grid-template-columns: minmax(180px, 22%) minmax(0, 1fr); gap: clamp(20px, 3vw, 48px); }

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

/* ---------- 6. 排版组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--cyan); flex: none; }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 14px;
  margin-bottom: clamp(18px, 3vw, 30px);
}
.section-head__title {
  margin: 0;
  font-size: clamp(22px, 3vw, 34px);
}
.section-head__rule {
  display: block;
  width: 100%;
  height: 2px;
  margin-top: 12px;
  background: linear-gradient(90deg, var(--gold), rgba(242, 194, 75, 0));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform .45s var(--ease);
}
.section-head.is-in .section-head__rule { transform: scaleX(1); }

.prose { max-width: 34em; color: var(--text); }
.prose > * + * { margin-top: 1.05em; }
.prose h2 { font-size: clamp(20px, 2.4vw, 26px); margin-top: 1.8em; }
.prose h3 { font-size: clamp(17px, 2vw, 20px); margin-top: 1.5em; color: var(--gold); }
.prose ul { list-style: none; }
.prose li { position: relative; padding-left: 1.2em; margin-top: .55em; }
.prose li::before { content: ""; position: absolute; left: 0; top: .75em; width: 8px; height: 1px; background: var(--cyan); }
.prose strong { color: #fff; font-weight: 600; }
.prose small { color: var(--muted); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  background: rgba(79, 216, 232, .06);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  line-height: 1.4;
}
.tag--gold { color: var(--gold); background: rgba(242, 194, 75, .08); border-color: rgba(242, 194, 75, .35); }
.tag--rose { color: var(--rose); background: rgba(255, 77, 126, .08); border-color: rgba(255, 77, 126, .32); }

.stat-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(32px, 4.6vw, 56px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}
.stat-label {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--muted);
}

.up { color: var(--green); }
.down { color: var(--rose); }

/* ---------- 7. 通用组件 ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .14em;
  line-height: 1.3;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .25s var(--ease), border-color .25s var(--ease),
              color .25s var(--ease), transform .25s var(--ease);
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn--ghost:hover { background: rgba(79, 216, 232, .1); border-color: rgba(79, 216, 232, .5); border-left-color: var(--cyan); color: #fff; }
.btn--gold {
  background: var(--gold);
  border-color: var(--gold);
  border-left-color: #FFE7A8;
  color: #08111F;
  font-weight: 700;
}
.btn--gold:hover { background: #FFD166; border-color: #FFD166; border-left-color: #FFF3CF; }

.panel {
  position: relative;
  background: var(--ink-2);
  box-shadow: inset 0 0 0 1px var(--line);
  padding: clamp(18px, 2.4vw, 30px);
}
.cut { clip-path: var(--cut); }
.cut--sm { clip-path: var(--cut-sm); }

.media-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background:
    radial-gradient(circle at 72% 18%, rgba(79, 216, 232, .16), transparent 55%),
    radial-gradient(circle at 18% 82%, rgba(242, 194, 75, .14), transparent 58%),
    linear-gradient(150deg, var(--ink-3), var(--ink-2));
  box-shadow: inset 0 0 0 1px var(--line);
  clip-path: var(--cut);
}
.media-frame[data-ratio="4/3"] { aspect-ratio: 4 / 3; }
.media-frame[data-ratio="1/1"] { aspect-ratio: 1 / 1; }
.media-frame[data-ratio="21/9"] { aspect-ratio: 21 / 9; }
.media-frame > img,
.media-frame > video,
.media-frame > picture > img { width: 100%; height: 100%; object-fit: cover; }
.media-frame__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--muted);
}

.compare { width: 100%; font-size: 15px; }
.compare caption {
  padding-bottom: 10px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--muted);
}
.compare th,
.compare td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
.compare thead th {
  background: var(--ink-3);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  white-space: nowrap;
}
.compare tbody tr:nth-child(even) { background: rgba(18, 29, 56, .55); }
.compare tbody tr:hover { background: rgba(79, 216, 232, .09); }
.compare .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
  letter-spacing: .02em;
}

.crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}
.crumb a { color: var(--muted); text-decoration: none; }
.crumb a:hover { color: var(--cyan); text-decoration: none; }
.crumb__sep { color: var(--line); }

/* ---------- 8. 刊头 ---------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 90;
  isolation: isolate;
  background: linear-gradient(180deg, rgba(5, 10, 24, .975), rgba(5, 10, 24, .9));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.masthead::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(90deg, rgba(36, 54, 92, .55) 1px, transparent 1px);
  background-size: 72px 100%;
  opacity: .4;
  -webkit-mask-image: linear-gradient(180deg, #000, transparent);
  mask-image: linear-gradient(180deg, #000, transparent);
  pointer-events: none;
}

.masthead__progress {
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: rgba(36, 54, 92, .55);
  z-index: 2;
}
.masthead__progress-fill {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--gold));
  transform: scaleX(0);
  transform-origin: 0 50%;
  will-change: transform;
}

.masthead__inner { position: relative; }

.masthead__bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  padding-block: clamp(13px, 1.9vw, 20px);
  transition: padding .3s var(--ease);
}
.masthead[data-condensed] .masthead__bar { padding-block: 8px; }

.round-mark {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--muted);
  white-space: nowrap;
}
.round-mark__num {
  padding: 3px 8px;
  background: var(--gold);
  color: #08111F;
  font-weight: 700;
  letter-spacing: .1em;
}
.round-mark__dot {
  width: 6px;
  height: 6px;
  flex: none;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(79, 216, 232, .16);
  animation: pulse-dot 2.6s ease-in-out infinite;
}
.round-mark__txt { overflow: hidden; text-overflow: ellipsis; }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .45; transform: scale(.82); }
}

.brand { text-align: center; min-width: 0; }
.brand__link {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  color: var(--text);
  text-decoration: none;
}
.brand__link:hover { text-decoration: none; }
.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.1vw, 38px);
  letter-spacing: -.018em;
  line-height: 1.05;
  transition: font-size .3s var(--ease);
}
.masthead[data-condensed] .brand__name { font-size: clamp(19px, 2.1vw, 24px); }
.brand__tag {
  padding: 3px 7px;
  border: 1px solid rgba(242, 194, 75, .45);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .22em;
  line-height: 1.1;
}
.brand__sub {
  max-height: 26px;
  margin-top: 7px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--muted);
  transition: opacity .25s var(--ease), max-height .3s var(--ease), margin-top .3s var(--ease);
}
.masthead[data-condensed] .brand__sub { opacity: 0; max-height: 0; margin-top: 0; }

.masthead__side {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  min-width: 0;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  cursor: pointer;
}
.nav-toggle__bars { display: grid; gap: 5px; width: 16px; }
.nav-toggle__bars span {
  display: block;
  height: 1px;
  background: var(--cyan);
  transition: transform .25s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child { transform: translateY(3px) rotate(20deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child { transform: translateY(-3px) rotate(-20deg); }

/* ---------- 9. 栏目条 ---------- */
.site-nav { border-top: 1px solid rgba(36, 54, 92, .75); }
.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: stretch;
  margin: 0;
  padding: 0;
}
.site-nav__list li { display: flex; align-items: center; min-width: 0; }
.site-nav__list li + li::before {
  content: "";
  width: 1px;
  height: 14px;
  flex: none;
  background: var(--line);
  transform: rotate(20deg);
}
.site-nav__list a {
  position: relative;
  display: block;
  padding: 13px 20px;
  color: var(--muted);
  font-size: 15px;
  letter-spacing: .04em;
  text-decoration: none;
  transition: color .25s var(--ease);
}
.site-nav__list a::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 8px;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform .32s var(--ease);
}
.site-nav__list a:hover { color: var(--text); text-decoration: none; }
.site-nav__list a:hover::after { transform: scaleX(1); }
.site-nav__list a[aria-current="page"] { color: var(--gold); }
.site-nav__list a[aria-current="page"]::after { transform: scaleX(1); }
.masthead[data-condensed] .site-nav__list a { padding-block: 9px; }

/* ---------- 10. 页脚 ---------- */
.site-foot {
  position: relative;
  margin-top: clamp(64px, 9vw, 128px);
  overflow: hidden;
  background: var(--ink-2);
  border-top: 1px solid var(--line);
}
.site-foot::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(36, 54, 92, .5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36, 54, 92, .5) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 10%, transparent 78%);
  mask-image: radial-gradient(ellipse at 50% 0%, #000 10%, transparent 78%);
  opacity: .8;
  pointer-events: none;
}
.site-foot::after {
  content: "";
  position: absolute;
  left: -10%;
  right: -10%;
  top: -160px;
  height: 320px;
  background: radial-gradient(ellipse at 50% 60%, rgba(79, 216, 232, .13), transparent 70%);
  pointer-events: none;
}
.site-foot__inner {
  position: relative;
  z-index: 1;
  padding-top: clamp(42px, 6vw, 76px);
}
.site-foot__grid {
  display: grid;
  grid-template-columns: 1.5fr .9fr 1.5fr .9fr;
  gap: clamp(26px, 3vw, 52px);
}

.foot-block { min-width: 0; }
.foot-block__title {
  margin: 0 0 14px;
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .24em;
  text-transform: uppercase;
}
.foot-block__lead {
  max-width: 28em;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.75;
}

.foot-brand {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 14px;
  color: var(--text);
  text-decoration: none;
}
.foot-brand:hover { text-decoration: none; }
.foot-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 24px;
  letter-spacing: -.015em;
}
.foot-brand__tag {
  padding: 2px 6px;
  border: 1px solid rgba(242, 194, 75, .45);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .22em;
}

.foot-list { display: grid; gap: 4px; }
.foot-list a {
  display: inline-block;
  padding: 4px 0;
  color: var(--muted);
  font-size: 15px;
  text-decoration: none;
  transition: color .22s var(--ease), transform .22s var(--ease);
}
.foot-list a:hover {
  color: var(--text);
  transform: translateX(4px);
  text-decoration: none;
}

.foot-contact { display: grid; gap: 10px; }
.foot-contact li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}
.foot-contact__k {
  padding-top: 3px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
}
.foot-contact__v {
  color: var(--text);
  font-size: 14.5px;
  word-break: break-word;
}
.foot-note {
  margin-top: 14px;
  max-width: 30em;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.72;
}

.foot-round {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
}
.foot-round__k { color: var(--muted); }
.foot-round__v { color: var(--gold); font-weight: 700; }

.site-foot__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 26px;
  margin-top: clamp(32px, 5vw, 58px);
  padding-block: 20px;
  border-top: 1px solid rgba(36, 54, 92, .75);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}

/* ---------- 11. 动效 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
[data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- 12. 响应式 ---------- */
@media (max-width: 1080px) {
  .site-foot__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  body { font-size: 16.5px; }
  #main-content { scroll-margin-top: 110px; }

  .masthead__bar {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
  }
  .round-mark { display: none; }
  .brand { text-align: left; grid-column: 1; }
  .brand__sub { letter-spacing: .14em; }
  .masthead__side { grid-column: 2; }
  .masthead__side .btn { display: none; }
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    background: var(--ink-2);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    transition: max-height .38s var(--ease), visibility .38s linear;
  }
  .site-nav[data-open] {
    max-height: min(74vh, 560px);
    overflow-y: auto;
    visibility: visible;
  }
  .site-nav__list { flex-direction: column; align-items: stretch; }
  .site-nav__list li { display: block; }
  .site-nav__list li + li::before {
    width: 100%;
    height: 1px;
    transform: none;
    background: rgba(36, 54, 92, .6);
  }
  .site-nav__list a { padding: 15px 22px; font-size: 16px; }
  .masthead[data-condensed] .site-nav__list a { padding-block: 15px; }
  .site-nav__list a::after { left: 22px; right: auto; width: 26px; bottom: 11px; }

  .grid--split { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .site-foot__grid { grid-template-columns: 1fr; }
  .foot-contact li { grid-template-columns: 40px minmax(0, 1fr); }
  .site-foot__base { flex-direction: column; align-items: flex-start; }
  .brand__tag { display: none; }
}

/* ---------- 13. 偏好减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .section-head__rule { transform: scaleX(1); }
  .round-mark__dot { animation: none; }
  .site-nav { transition: none; }
}