/* ============================================================
   球速体育赛事 · 共享样式 /assets/site.css
   高原数据台：湖青深蓝 + 奶油纸底 + 暖橙，纵向长卷
   ============================================================ */

/* ---------- 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, ul, ol, li, figure, figcaption, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. Tokens ---------- */
:root {
  --lake: #0B3B4A;
  --night: #06262F;
  --paper: #F7F1E6;
  --paper-deep: #EFE6D5;
  --paper-light: #FFFDF8;
  --ink: #211B17;
  --ember: #D85B2A;
  --ember-deep: #B9481E;
  --flare: #FF7A1A;
  --meadow: #4E8B63;
  --cold: #DDE3E2;
  --mist: #8FB3B8;

  --wrap: 1180px;
  --gutter: clamp(1.05rem, 3.2vw, 2.6rem);
  --cut: 18px;

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

  --ease: cubic-bezier(.22, .68, .24, 1);
  --dur: .34s;
}

/* ---------- 3. Base typography ---------- */
body {
  font-family: var(--font-sans);
  font-size: clamp(1rem, .96rem + .18vw, 1.075rem);
  line-height: 1.75;
  color: var(--ink);
  background-color: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.012em;
}
h1 { font-size: clamp(2rem, 1.4rem + 2.6vw, 3.4rem); }
h2 { font-size: clamp(1.45rem, 1.2rem + 1.2vw, 2.1rem); }
h3 { font-size: clamp(1.1rem, 1rem + .5vw, 1.36rem); }
h4 { font-size: clamp(1rem, .95rem + .25vw, 1.14rem); }

p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

strong, b { font-weight: 800; }

a { text-decoration-thickness: 1px; text-underline-offset: .22em; }

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

::selection {
  background: var(--ember);
  color: var(--paper-light);
}

.mono, .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

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

#main-content,
.main-content {
  display: block;
  scroll-margin-top: 96px;
}

.section { padding-block: clamp(2.2rem, 4.6vw, 3.9rem); }
.section--tight { padding-block: clamp(1.3rem, 2.8vw, 2.2rem); }

.grid { display: grid; gap: clamp(1rem, 2.4vw, 2rem); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 268px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 216px), 1fr)); }
.grid--split { grid-template-columns: minmax(0, 1fr); }
@media (min-width: 900px) {
  .grid--split { grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  margin-bottom: .85rem;
  font-size: .74rem;
  font-weight: 800;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ember);
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--ember);
  flex: none;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: .9rem;
  padding-bottom: .7rem;
  margin-bottom: clamp(1.2rem, 2.4vw, 2rem);
  border-bottom: 1px solid rgba(33, 27, 23, .16);
}
.section-head__num {
  font-family: var(--font-mono);
  font-size: .92rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--ember);
  flex: none;
}
.section-head__title { font-size: clamp(1.22rem, 1.05rem + .8vw, 1.7rem); }

/* ---------- 5. Skip link ---------- */
.skip-link {
  position: fixed;
  top: -140px;
  left: 1rem;
  z-index: 200;
  display: inline-block;
  padding: .7em 1.1em;
  background: var(--flare);
  color: var(--night);
  font-weight: 800;
  font-size: .86rem;
  letter-spacing: .06em;
  text-decoration: none;
  transition: top .2s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible {
  top: .7rem;
  outline-color: var(--paper);
}

/* ---------- 6. Header / masthead ---------- */
.masthead {
  position: relative;
  z-index: 40;
  background: var(--lake);
  color: var(--paper);
}

.masthead__top {
  background:
    linear-gradient(100deg, rgba(6, 38, 47, .72) 0%, rgba(11, 59, 74, .1) 58%, rgba(11, 59, 74, 0) 100%);
  border-bottom: 1px solid rgba(247, 241, 230, .14);
}

.masthead__top-inner {
  display: flex;
  align-items: center;
  gap: clamp(.65rem, 1.8vw, 1.4rem);
  min-height: 76px;
  padding-block: .65rem;
}

.masthead__brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  text-decoration: none;
  color: inherit;
  flex: none;
}

.masthead__mark {
  position: relative;
  display: block;
  width: 40px;
  height: 40px;
  flex: none;
  background: var(--ember);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
}
.masthead__mark::before {
  content: "";
  position: absolute;
  inset: 9px 10px;
  background: repeating-linear-gradient(112deg, var(--paper) 0 3px, transparent 3px 8px);
  clip-path: polygon(0 0, 100% 0, 50% 100%, 0 100%);
  opacity: .92;
}

.masthead__wordmark {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.16;
}
.masthead__brandline {
  font-size: clamp(1.02rem, .95rem + .4vw, 1.2rem);
  font-weight: 800;
  letter-spacing: .07em;
}
.masthead__subline {
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--mist);
}

.masthead__status {
  display: none;
  align-items: center;
  gap: .5rem;
  margin: 0;
  padding-left: 1.05rem;
  border-left: 1px solid rgba(247, 241, 230, .2);
  font-size: .74rem;
  letter-spacing: .12em;
  color: var(--mist);
}
.masthead__status-dot {
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
  background: var(--flare);
  box-shadow: 0 0 0 3px rgba(255, 122, 26, .18);
}
.masthead__status-value {
  color: var(--paper);
  font-weight: 800;
  letter-spacing: .1em;
}
@media (min-width: 1000px) {
  .masthead__status { display: inline-flex; }
}

.masthead__utility {
  display: none;
  align-items: center;
  gap: .55rem;
  margin-left: auto;
}
@media (min-width: 760px) {
  .masthead__utility { display: flex; }
}

/* ---------- 7. Nav toggle ---------- */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  margin-left: auto;
  padding: .62em .85em;
  background: transparent;
  border: 1px solid rgba(247, 241, 230, .38);
  border-radius: 2px;
  color: var(--paper);
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .14em;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav-toggle:hover { border-color: var(--flare); color: var(--flare); }

.nav-toggle__lines {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}
.nav-toggle__bar {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.masthead[data-open] .nav-toggle__bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.masthead[data-open] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.masthead[data-open] .nav-toggle__bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.nav-toggle__label { line-height: 1; }

@media (min-width: 760px) {
  .nav-toggle { margin-left: 0; }
}
@media (min-width: 900px) {
  .nav-toggle { display: none; }
}

/* ---------- 8. Nav bar ---------- */
.nav-bar {
  position: sticky;
  top: 0;
  z-index: 45;
  background: var(--night);
}

.nav-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 56px;
  padding-block: .1rem;
}

.nav-list {
  display: flex;
  align-items: stretch;
  gap: clamp(.1rem, .9vw, .5rem);
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--mist) transparent;
  -webkit-overflow-scrolling: touch;
}
.nav-list::-webkit-scrollbar { height: 3px; }
.nav-list::-webkit-scrollbar-thumb { background: var(--mist); }

.nav-list__item { flex: none; }

.nav-link {
  position: relative;
  display: block;
  padding: 1.05rem .82rem .95rem;
  color: rgba(247, 241, 230, .76);
  font-size: .9rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: .85rem;
  bottom: .6rem;
  width: 16px;
  height: 2px;
  background: var(--ember);
  opacity: 0;
  transform: translateX(-7px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.nav-link:hover { color: var(--paper); }
.nav-link[aria-current="page"] { color: var(--paper); }
.nav-link[aria-current="page"]::after { opacity: 1; transform: none; }

.nav-bar__note {
  display: none;
  margin: 0;
  font-size: .7rem;
  letter-spacing: .18em;
  color: var(--mist);
  white-space: nowrap;
}
@media (min-width: 1080px) {
  .nav-bar__note { display: block; }
}

/* 移动端导航展开 */
@media (max-width: 899px) {
  .nav-bar__inner {
    flex-direction: column;
    align-items: stretch;
    padding-block: .15rem .5rem;
  }
  .nav-list {
    display: none;
    overflow: visible;
  }
  [data-nav][data-open] .nav-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-height: 62vh;
    overflow-y: auto;
    padding-block: .3rem .6rem;
  }
  [data-nav][data-open] .nav-link {
    padding: .92rem .1rem;
    border-bottom: 1px solid rgba(247, 241, 230, .12);
    font-size: .95rem;
  }
  [data-nav][data-open] .nav-link::after {
    left: .1rem;
    bottom: .58rem;
  }
  .nav-bar__note { display: none; }
}

/* ---------- 9. Scroll progress line ---------- */
.scroll-line {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: rgba(247, 241, 230, .1);
  pointer-events: none;
}
.scroll-line__bar {
  display: block;
  height: 100%;
  width: var(--scroll-p, 0%);
  background: linear-gradient(90deg, var(--ember), var(--flare));
  transition: width .12s linear;
}

/* ---------- 10. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45em;
  padding: .74em 1.15em;
  border: 1px solid transparent;
  border-radius: 2px;
  background: transparent;
  font-family: inherit;
  font-size: .88rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: .07em;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--ember);
  border-color: var(--ember);
  color: var(--paper-light);
}
.btn--primary:hover {
  background: var(--ember-deep);
  border-color: var(--ember-deep);
}

.btn--ghost {
  border-color: rgba(247, 241, 230, .42);
  color: var(--paper);
}
.btn--ghost:hover {
  border-color: var(--flare);
  color: var(--flare);
}

.btn--ink {
  border-color: var(--lake);
  color: var(--lake);
  background: transparent;
}
.btn--ink:hover {
  background: var(--lake);
  border-color: var(--lake);
  color: var(--paper);
}

.btn--sm {
  font-size: .78rem;
  padding: .62em .92em;
  letter-spacing: .06em;
}

/* ---------- 11. Panels & media frames ---------- */
.cut-panel {
  position: relative;
  padding: clamp(1.1rem, 2.2vw, 1.8rem);
  background: var(--paper-deep);
  color: var(--ink);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}
.cut-panel--ink {
  background: var(--night);
  color: var(--paper);
}
.cut-panel--paper {
  background: var(--paper-light);
}

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: linear-gradient(140deg, #0B3B4A 0%, #06262F 78%);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}
.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(115deg, rgba(143, 179, 184, .17) 0 1px, transparent 1px 22px),
    repeating-linear-gradient(25deg, rgba(143, 179, 184, .1) 0 1px, transparent 1px 34px);
  pointer-events: none;
}
.media-frame__img,
.media-frame img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  padding: .5em .85em;
  background: var(--night);
  color: var(--paper);
  font-size: .72rem;
  letter-spacing: .12em;
}

/* ---------- 12. Tags & breadcrumbs ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: .4em;
  padding: .3em .62em;
  border: 1px solid currentColor;
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .12em;
  line-height: 1.2;
  color: var(--lake);
}
.tag--weekend { color: var(--ember); }
.tag--live {
  background: var(--flare);
  border-color: var(--flare);
  color: var(--night);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  margin-bottom: clamp(1.1rem, 2vw, 1.8rem);
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--mist);
}
.breadcrumbs__item {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
}
.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  color: var(--mist);
  opacity: .7;
}
.breadcrumbs a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 27, 23, .22);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.breadcrumbs a:hover {
  color: var(--ember);
  border-bottom-color: var(--ember);
}

/* ---------- 13. Footer ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 7vw, 6rem);
  background: var(--lake);
  color: rgba(247, 241, 230, .82);
}

.site-footer__stripe {
  display: block;
  height: 6px;
  background: linear-gradient(100deg,
    var(--ember) 0 22%,
    var(--flare) 22% 40%,
    var(--meadow) 40% 62%,
    var(--night) 62% 100%);
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.8rem, 3.6vw, 3rem);
  padding-block: clamp(2.4rem, 5vw, 3.8rem) clamp(1.8rem, 3vw, 2.6rem);
}

.site-footer__brand { max-width: 42ch; }

.site-footer__name {
  margin-bottom: .55rem;
  font-size: clamp(1.2rem, 1.05rem + .6vw, 1.5rem);
  font-weight: 800;
  letter-spacing: .1em;
  color: var(--paper);
}

.site-footer__summary {
  font-size: .92rem;
  line-height: 1.8;
  color: rgba(247, 241, 230, .72);
  margin-bottom: 1.15rem;
}

.site-footer__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.site-footer__col-title {
  margin-bottom: .75rem;
  font-size: .74rem;
  font-weight: 800;
  letter-spacing: .2em;
  color: var(--mist);
  text-transform: uppercase;
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: .45rem;
}

.site-footer__link {
  position: relative;
  display: inline-block;
  padding-left: .1rem;
  font-size: .9rem;
  color: rgba(247, 241, 230, .84);
  text-decoration: none;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.site-footer__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 0;
  height: 2px;
  background: var(--flare);
  transition: width var(--dur) var(--ease);
}
.site-footer__link:hover {
  color: var(--flare);
  padding-left: 1.05rem;
}
.site-footer__link:hover::before { width: .75rem; }

.site-footer__contact-list {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  font-size: .88rem;
  line-height: 1.7;
}
.site-footer__contact-list li {
  display: flex;
  gap: .55rem;
  align-items: baseline;
}
.site-footer__label {
  flex: none;
  min-width: 3em;
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--mist);
}
.site-footer__value {
  color: rgba(247, 241, 230, .9);
  word-break: break-word;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem 1.4rem;
  padding-block: 1.1rem 1.6rem;
  border-top: 1px solid rgba(247, 241, 230, .16);
  font-size: .78rem;
  letter-spacing: .06em;
  color: rgba(247, 241, 230, .64);
}
.site-footer__legal,
.site-footer__copy,
.site-footer__note { margin: 0; }
.site-footer__legal { color: var(--mist); }
.site-footer__note { flex-basis: 100%; }

@media (min-width: 780px) {
  .site-footer__top {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1.35fr);
    align-items: start;
  }
  .site-footer__contact {
    grid-column: 1 / -1;
    padding-top: 1.4rem;
    border-top: 1px solid rgba(247, 241, 230, .14);
  }
  .site-footer__contact-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: .4rem 1.8rem;
  }
  .site-footer__note { flex-basis: auto; margin-left: auto; }
}

@media (min-width: 1040px) {
  .site-footer__top {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.1fr) minmax(0, .95fr);
  }
  .site-footer__contact {
    grid-column: auto;
    padding-top: 0;
    border-top: 0;
  }
  .site-footer__contact-list { flex-direction: column; gap: .5rem; }
}

/* ---------- 14. Reveal ---------- */
.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}
.js-reveal [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 15. Motion / responsive safety ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .js-reveal [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
  .scroll-line__bar { transition: none; }
}

@media (max-width: 420px) {
  .masthead__subline { display: none; }
  .masthead__top-inner { min-height: 64px; }
  .site-footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-footer__cols > :last-child { grid-column: 1 / -1; }
}