/* ============================================================
   三亿体育赛事 · 共享 Site Kit
   场心墨绿 / 荧光青 / 暖橙 · 切角标签 · 精密刻度 · 直角细线
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 104px;
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body { margin: 0; min-height: 100vh; }

h1, h2, h3, h4, h5, p, figure, blockquote { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button { font: inherit; color: inherit; background: none; border: 0; }
table { border-collapse: collapse; width: 100%; }
hr { border: 0; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink: #071A15;
  --ink-2: #0E2A22;
  --line: #1E3D33;
  --paper: #F3EBDD;
  --paper-hi: #FBF7ED;
  --cyan: #45F0C2;
  --cyan-soft: #9BE8D2;
  --orange: #FF8A3D;
  --brick: #D9552F;
  --caramel: #C79A5B;
  --muted: #A9C0B7;
  --brown: #1A1511;

  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-narrow: "Barlow Condensed", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --maxw: 1240px;
  --pad-x: 24px;
  --head-h: 76px;
  --ease: cubic-bezier(.2, .7, .3, 1);

  --cut: polygon(0 0, 100% 0, 100% 71%, 71% 100%, 0 100%);
}

/* ---------- 3. Base ---------- */
body {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  font-weight: 400;
  color: var(--paper);
  background-color: var(--ink);
  background-image:
    linear-gradient(to right, rgba(30, 61, 51, .5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 61, 51, .32) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px;
  background-position: center top;
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-narrow);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--paper-hi);
}

h1 { font-size: clamp(2.4rem, 5vw, 4.8rem); }
h2 { font-size: clamp(1.5rem, 2.4vw, 2.2rem); }
h3 { font-size: clamp(1.12rem, 1.6vw, 1.4rem); }

p { max-width: 74ch; }

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

em { font-style: normal; color: var(--cyan-soft); }

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

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

#main-content:focus { outline: none; }

/* ---------- 4. Layout helpers ---------- */
.s3-container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.s3-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--cyan-soft);
}

.s3-eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--orange);
  flex: 0 0 auto;
}

.s3-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px 4px 10px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
  background: rgba(69, 240, 194, .12);
  border: 1px solid rgba(69, 240, 194, .42);
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

.s3-tag--warm {
  color: var(--orange);
  background: rgba(255, 138, 61, .14);
  border-color: rgba(255, 138, 61, .48);
}

.s3-rule {
  position: relative;
  height: 1px;
  margin: 44px 0;
  background: linear-gradient(to right, var(--line), var(--line) 65%, transparent);
}

.s3-rule::before {
  content: "";
  position: absolute;
  left: 0;
  top: -4px;
  width: 9px;
  height: 9px;
  background: var(--cyan);
  clip-path: polygon(0 0, 100% 50%, 0 100%);
}

/* ---------- 5. Buttons ---------- */
.s3-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  font-family: var(--font-sans);
  font-size: .86rem;
  font-weight: 700;
  letter-spacing: .03em;
  line-height: 1.3;
  text-decoration: none;
  color: var(--paper);
  background: transparent;
  border: 1px solid var(--line);
  cursor: pointer;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease), transform .18s var(--ease);
}

.s3-btn:hover { transform: translateY(-1px); }
.s3-btn:active { transform: translateY(0); }

.s3-btn--ghost {
  color: var(--cyan);
  border-color: rgba(69, 240, 194, .45);
  background: rgba(69, 240, 194, .06);
}

.s3-btn--ghost:hover {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

.s3-btn--solid {
  color: var(--brown);
  background: var(--orange);
  border-color: var(--orange);
}

.s3-btn--solid:hover {
  color: var(--brown);
  background: #FF9E5F;
  border-color: #FF9E5F;
}

/* ---------- 6. Skip link ---------- */
.s3-skip {
  position: absolute;
  left: 16px;
  top: -140px;
  z-index: 220;
  padding: 12px 20px;
  font-size: .86rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-decoration: none;
  color: var(--ink);
  background: var(--cyan);
  border: 1px solid var(--ink);
  transition: top .18s var(--ease);
}

.s3-skip:focus {
  top: 14px;
}

/* ---------- 7. Header ---------- */
.s3-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(7, 26, 21, .95);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: border-color .22s var(--ease), box-shadow .22s var(--ease);
}

.s3-header.is-scrolled {
  border-bottom-color: rgba(69, 240, 194, .5);
  box-shadow: 0 18px 44px rgba(0, 0, 0, .5);
}

.s3-header__ruler {
  height: 10px;
  background-image: repeating-linear-gradient(to right, var(--line) 0 1px, transparent 1px 14px);
  background-position: left bottom;
  background-repeat: repeat-x;
  border-bottom: 1px solid var(--line);
  opacity: .9;
}

.s3-header__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: var(--head-h);
}

.s3-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  text-decoration: none;
  color: var(--paper-hi);
}

.s3-brand__mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  font-family: var(--font-narrow);
  font-size: 22px;
  font-weight: 800;
  color: var(--cyan);
  background: var(--ink-2);
  border: 1px solid rgba(69, 240, 194, .38);
  clip-path: var(--cut);
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.s3-brand:hover .s3-brand__mark {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

.s3-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.s3-brand__line {
  font-family: var(--font-narrow);
  font-size: 1.04rem;
  font-weight: 800;
  letter-spacing: .07em;
  color: var(--paper-hi);
}

.s3-brand__sub {
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .2em;
  color: var(--muted);
  white-space: nowrap;
}

.s3-header__panel {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-left: auto;
  min-width: 0;
}

.s3-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: wrap;
}

.s3-nav__link {
  position: relative;
  display: inline-block;
  padding: 9px 11px;
  font-size: .9rem;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}

.s3-nav__link::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 3px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .2s var(--ease);
}

.s3-nav__link:hover,
.s3-nav__link:focus-visible {
  color: var(--paper-hi);
  background: rgba(14, 42, 34, .85);
  border-color: var(--line);
}

.s3-nav__link:hover::after,
.s3-nav__link:focus-visible::after { transform: scaleX(1); }

.s3-nav__link[aria-current="page"] {
  color: var(--ink);
  font-weight: 700;
  background: var(--cyan);
  border-color: var(--cyan);
}

.s3-nav__link[aria-current="page"]::after { transform: scaleX(0); }

.s3-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.s3-nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 9px 13px;
  font-size: .84rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--paper);
  background: rgba(14, 42, 34, .9);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.s3-nav-toggle:hover {
  color: var(--cyan);
  border-color: rgba(69, 240, 194, .55);
}

.s3-nav-toggle__bars {
  display: grid;
  gap: 3px;
  width: 18px;
}

.s3-nav-toggle__bars i {
  display: block;
  height: 2px;
  background: var(--cyan);
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.s3-nav-toggle[aria-expanded="true"] {
  color: var(--cyan);
  border-color: var(--cyan);
}

.s3-nav-toggle[aria-expanded="true"] .s3-nav-toggle__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.s3-nav-toggle[aria-expanded="true"] .s3-nav-toggle__bars i:nth-child(2) { opacity: 0; }
.s3-nav-toggle[aria-expanded="true"] .s3-nav-toggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

.s3-header__progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  overflow: hidden;
  pointer-events: none;
}

.s3-header__progress span {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform .12s linear;
}

/* ---------- 8. Footer ---------- */
.s3-footer {
  margin-top: 88px;
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  color: var(--paper);
}

.s3-footer__ruler {
  height: 8px;
  background-image: repeating-linear-gradient(to right, var(--line) 0 1px, transparent 1px 12px);
  background-position: left bottom;
  background-repeat: repeat-x;
  border-bottom: 1px solid var(--line);
  opacity: .85;
}

.s3-footer__inner {
  display: grid;
  grid-template-columns: 1.15fr 1.5fr 1.25fr;
  gap: 44px;
  padding-block: 56px 44px;
}

.s3-footer__brandcol { min-width: 0; }

.s3-brand--footer .s3-brand__mark {
  width: 42px;
  height: 42px;
  font-size: 20px;
  color: var(--caramel);
  border-color: rgba(199, 154, 91, .45);
}

.s3-brand--footer:hover .s3-brand__mark {
  color: var(--brown);
  background: var(--caramel);
  border-color: var(--caramel);
}

.s3-footer__tagline {
  margin-top: 16px;
  max-width: 30ch;
  font-size: .86rem;
  line-height: 1.8;
  color: var(--muted);
}

.s3-footer__cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  min-width: 0;
}

.s3-footer__heading {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 500;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--cyan-soft);
}

.s3-footer__list {
  display: grid;
  gap: 9px;
}

.s3-footer__link {
  display: inline-block;
  font-size: .93rem;
  color: var(--paper);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.s3-footer__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.s3-footer__contact { min-width: 0; }

.s3-footer__line {
  font-family: var(--font-mono);
  font-size: .84rem;
  line-height: 1.9;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.s3-footer__key {
  display: inline-block;
  min-width: 42px;
  margin-right: 8px;
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--caramel);
}

.s3-footer__note {
  margin-top: 12px;
  padding-left: 12px;
  border-left: 2px solid var(--line);
  font-size: .78rem;
  line-height: 1.8;
  color: var(--muted);
}

.s3-footer__meta {
  background: rgba(7, 26, 21, .72);
  border-top: 1px solid var(--line);
}

.s3-footer__meta-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 26px;
  padding-block: 18px;
  font-size: .78rem;
  color: var(--muted);
}

.s3-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
}

.s3-footer__legal a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.s3-footer__legal a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.s3-footer__record {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--caramel);
}

.s3-footer__copy {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--muted);
}

/* ---------- 9. Breadcrumb ---------- */
.s3-breadcrumb { margin-bottom: 30px; }

.s3-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--muted);
}

.s3-breadcrumb__item { display: inline-flex; align-items: center; }

.s3-breadcrumb__item + .s3-breadcrumb__item::before {
  content: "/";
  margin: 0 10px;
  color: var(--line);
}

.s3-breadcrumb__link {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(69, 240, 194, .32);
}

.s3-breadcrumb__link:hover { color: var(--cyan); }

.s3-breadcrumb__item[aria-current="page"] { color: var(--paper-hi); }

/* ---------- 10. Prose & paper ---------- */
.s3-paper {
  padding: clamp(24px, 4vw, 48px);
  color: var(--brown);
  background: var(--paper);
  background-image:
    linear-gradient(rgba(26, 21, 17, .035) 1px, transparent 1px);
  background-size: 100% 30px;
  border: 1px solid #D8CDB8;
  border-top: 4px solid var(--caramel);
}

.s3-paper h2,
.s3-paper h3,
.s3-paper h4 { color: var(--brown); }

.s3-paper .s3-eyebrow { color: var(--brick); }
.s3-paper .s3-eyebrow::before { background: var(--brick); }
.s3-paper strong { color: #000; }
.s3-paper em { color: var(--brick); }
.s3-paper .s3-breadcrumb__link { color: var(--brick); border-bottom-color: rgba(217, 85, 47, .4); }

.s3-prose { max-width: 70ch; }

.s3-prose > * + * { margin-top: 1.1em; }

.s3-prose h2 {
  margin-top: 1.9em;
  padding-bottom: .4em;
  border-bottom: 1px solid var(--line);
}

.s3-paper.s3-prose h2 { border-bottom-color: #D8CDB8; }

.s3-prose h3 { margin-top: 1.6em; }

.s3-prose ul,
.s3-prose ol {
  padding-left: 1.25em;
  list-style: disc;
}

.s3-prose ol { list-style: decimal; }

.s3-prose li + li { margin-top: .45em; }

.s3-prose blockquote {
  padding: 14px 20px;
  border-left: 3px solid var(--cyan);
  background: rgba(69, 240, 194, .07);
  color: var(--cyan-soft);
  font-size: .95rem;
}

.s3-paper .s3-prose blockquote {
  background: rgba(217, 85, 47, .08);
  border-left-color: var(--brick);
  color: var(--brown);
}

.s3-prose a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(69, 240, 194, .4);
}

.s3-prose a:hover { border-bottom-color: var(--cyan); }

.s3-paper .s3-prose a { color: var(--brick); border-bottom-color: rgba(217, 85, 47, .4); }

.s3-prose code {
  font-family: var(--font-mono);
  font-size: .88em;
  padding: 1px 6px;
  color: var(--cyan);
  background: rgba(69, 240, 194, .1);
  border: 1px solid rgba(69, 240, 194, .28);
}

.s3-prose table { margin-top: 1.2em; font-size: .92rem; }

.s3-prose th,
.s3-prose td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.s3-prose th {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan-soft);
}

.s3-paper .s3-prose th,
.s3-paper .s3-prose td { border-bottom-color: #D8CDB8; }
.s3-paper .s3-prose th { color: var(--brown); }

/* ---------- 11. Media container ---------- */
.s3-media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background-color: var(--ink-2);
  background-image:
    radial-gradient(120% 95% at 22% 0%, #14483A 0%, #081F19 58%, #071A15 100%);
  border: 1px solid var(--line);
}

.s3-media::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(69, 240, 194, .18);
  pointer-events: none;
  z-index: 2;
}

.s3-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 3;
  background-image: repeating-linear-gradient(to bottom, rgba(255, 255, 255, .05) 0 1px, transparent 1px 3px);
  mix-blend-mode: overlay;
}

.s3-media > img,
.s3-media > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: relative;
  z-index: 1;
}

.s3-media--wide { aspect-ratio: 16 / 9; }
.s3-media--tall { aspect-ratio: 4 / 5; }
.s3-media--square { aspect-ratio: 1 / 1; }
.s3-media--banner { aspect-ratio: 21 / 9; }

.s3-media__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  line-height: 1.7;
  color: var(--muted);
}

.s3-paper .s3-media__caption { color: #6B6055; }

/* ---------- 12. Reveal protocol ---------- */
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}

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

/* ---------- 13. Responsive ---------- */
@media (max-width: 1080px) {
  :root { --pad-x: 20px; }

  .s3-nav__link { padding: 8px 9px; font-size: .84rem; }
  .s3-nav__link::after { left: 9px; right: 9px; }
  .s3-actions .s3-btn { padding: 9px 12px; font-size: .8rem; }
  .s3-brand__sub { display: none; }

  .s3-footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
  .s3-footer__contact { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  :root { --head-h: 64px; --pad-x: 16px; }

  .s3-brand__mark { width: 38px; height: 38px; font-size: 19px; }
  .s3-brand__line { font-size: .96rem; }

  .s3-nav-toggle { display: inline-flex; }

  .s3-header__panel {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 95;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-left: 0;
    padding: 10px var(--pad-x) 22px;
    background: var(--ink-2);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid rgba(69, 240, 194, .4);
    box-shadow: 0 26px 48px rgba(0, 0, 0, .58);
    max-height: calc(100vh - 84px);
    overflow-y: auto;
  }

  .s3-header__panel[data-open] { display: flex; }

  .s3-nav {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .s3-nav__link {
    padding: 14px 10px;
    font-size: .96rem;
    border-bottom: 1px solid var(--line);
  }

  .s3-nav__link::after { display: none; }

  .s3-nav__link[aria-current="page"] {
    color: var(--cyan);
    background: rgba(69, 240, 194, .1);
    border-color: transparent;
    border-bottom-color: var(--cyan);
  }

  .s3-actions {
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
  }

  .s3-actions .s3-btn {
    flex: 1 1 150px;
    padding: 12px 14px;
    font-size: .88rem;
  }

  .s3-footer { margin-top: 64px; }
  .s3-footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-block: 42px 34px;
  }
  .s3-footer__cols { grid-template-columns: 1fr 1fr; }
  .s3-footer__tagline { max-width: 42ch; }
  .s3-footer__meta-inner { justify-content: flex-start; }
  .s3-rule { margin: 32px 0; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }

  .s3-footer__cols { grid-template-columns: 1fr; gap: 26px; }
  .s3-footer__legal { gap: 6px 16px; }
  .s3-media--tall { aspect-ratio: 3 / 4; }
  .s3-paper { padding: 20px 16px; }
}

/* ---------- 14. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

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

  .s3-btn:hover { transform: none; }
}