/* ============ 新2足球备用 · 共享样式 /assets/site.css ============ */

/* ---- 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, dl, dt, dd, figure, blockquote, pre { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }
[hidden] { display: none !important; }

/* ---- tokens ---- */
:root {
  --night: #0A3A2C;
  --ink: #051D17;
  --indigo: #121B33;
  --wine: #3A1424;
  --neon: #4FE0A4;
  --warm: #F5EFE4;
  --amber: #F0B429;
  --scarlet: #E1543C;
  --sage: #8FA79B;
  --silver: #C9D6D0;

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

  --fs-display: clamp(2.6rem, 7vw, 5.4rem);
  --fs-h2: clamp(1.55rem, 3.4vw, 2.5rem);
  --fs-h3: clamp(1.12rem, 2vw, 1.45rem);
  --fs-body: 17px;
  --fs-note: 15px;
  --fs-label: 13px;
  --fs-anno: 12px;

  --maxw: 1200px;
  --gutter: clamp(1.15rem, 4.5vw, 3.2rem);
  --cut: 14px;
  --dur: 260ms;
  --ease: cubic-bezier(.2, .7, .2, 1);

  --line: rgba(201, 214, 208, .22);
  --line-neon: rgba(79, 224, 164, .3);
  --shadow: 0 22px 48px rgba(2, 12, 9, .5);
}

/* ---- base ---- */
body {
  background-color: var(--night);
  background-image:
    radial-gradient(1100px 620px at 84% -14%, rgba(79, 224, 164, .10), transparent 62%),
    radial-gradient(860px 540px at -10% 32%, rgba(18, 27, 51, .72), transparent 68%);
  background-repeat: no-repeat;
  color: var(--warm);
  font-family: var(--font-display);
  font-size: var(--fs-body);
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

/* ---- skip link ---- */
.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 200;
  padding: .62rem 1.05rem;
  background: var(--neon);
  color: var(--ink);
  font-size: .9rem;
  font-weight: 700;
  letter-spacing: .06em;
  transition: top 200ms var(--ease);
}
.skip-link:focus { top: .9rem; }

/* ---- header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--ink);
  border-bottom: 1px solid var(--line-neon);
  box-shadow: 0 10px 30px rgba(2, 12, 9, .45);
}

.mobile-strip {
  background: linear-gradient(96deg, var(--wine) 0%, var(--indigo) 58%, var(--night) 100%);
  border-bottom: 1px solid var(--line-neon);
}
.mobile-strip__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: .68rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: padding var(--dur) var(--ease);
}
.mobile-strip__label {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-size: .88rem;
  letter-spacing: .05em;
  color: var(--warm);
  transition: font-size var(--dur) var(--ease), color var(--dur) var(--ease);
}
.mobile-strip__pulse {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  background: var(--neon);
  box-shadow: 0 0 0 4px rgba(79, 224, 164, .16);
}
.mobile-strip__cta {
  display: inline-flex;
  align-items: center;
  padding: .46rem 1.05rem;
  background: var(--neon);
  color: var(--ink);
  font-size: .84rem;
  font-weight: 700;
  letter-spacing: .06em;
  white-space: nowrap;
  clip-path: polygon(9px 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%, 0 9px);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.mobile-strip__cta:hover { background: var(--warm); color: var(--ink); }
.mobile-strip__cta:focus-visible { outline: none; background: var(--warm); color: var(--ink); }

.site-header[data-condensed] .mobile-strip__inner { padding-block: .3rem; }
.site-header[data-condensed] .mobile-strip__label { font-size: 12px; color: var(--silver); }
.site-header[data-condensed] .mobile-strip__cta { padding-block: .3rem; font-size: .78rem; }

.site-header__inner {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: .9rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.4rem;
  transition: padding var(--dur) var(--ease);
}
.site-header[data-condensed] .site-header__inner { padding-block: .55rem; }

/* brand */
.brand {
  display: flex;
  align-items: baseline;
  gap: .62rem;
  min-width: 0;
  flex-wrap: wrap;
}
.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.05rem, 2.1vw, 1.4rem);
  letter-spacing: -.015em;
  color: var(--warm);
  line-height: 1.1;
}
.brand__spark {
  width: 24px;
  height: 2px;
  flex: 0 0 auto;
  align-self: center;
  background: var(--neon);
  box-shadow: 0 0 9px rgba(79, 224, 164, .75);
}
.brand__domain {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .07em;
  color: var(--sage);
  word-break: break-all;
}

/* nav toggle */
.nav-toggle {
  display: none;
  align-items: center;
  gap: .5rem;
  padding: .5rem .78rem;
  border: 1px solid rgba(245, 239, 228, .3);
  color: var(--warm);
  font-size: .84rem;
  letter-spacing: .12em;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav-toggle:hover,
.nav-toggle:focus-visible { border-color: var(--neon); color: var(--neon); }
.nav-toggle__bars { display: grid; gap: 4px; width: 16px; }
.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child { transform: translateY(3px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child { transform: translateY(-3px) rotate(-45deg); }

/* nav */
.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(.5rem, 1.7vw, 1.5rem);
}
.site-nav__link {
  position: relative;
  display: block;
  padding: .42rem .15rem;
  font-size: .95rem;
  letter-spacing: .02em;
  color: var(--silver);
  transition: color var(--dur) var(--ease);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--neon);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}
.site-nav__link:hover { color: var(--warm); }
.site-nav__link:hover::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"] { color: var(--warm); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

/* scroll progress */
.scroll-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: var(--neon);
  box-shadow: 0 0 10px rgba(79, 224, 164, .6);
  z-index: 2;
}

/* ---- layout primitives ---- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: var(--gutter);
}
.section { padding-block: clamp(3rem, 8vw, 6.2rem); position: relative; }
.section--ink { background: var(--ink); }
.section--indigo { background: var(--indigo); }
.section--wine { background: var(--wine); }
.section--flush { padding-block: 0; }

.stack { display: grid; gap: clamp(.7rem, 1.6vw, 1.15rem); }
.stack--tight { gap: .55rem; }

.grid { display: grid; gap: clamp(1rem, 2.4vw, 1.7rem); }
.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }

.split { display: grid; gap: clamp(1.6rem, 4vw, 3.2rem); grid-template-columns: 1fr; }

/* ---- typography ---- */
.display {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-display);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--warm);
}
.h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h2);
  line-height: 1.2;
  letter-spacing: -.012em;
  color: var(--warm);
}
.h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h3);
  line-height: 1.35;
  color: var(--warm);
}
.prose {
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--warm);
  max-width: 44ch;
}
.prose + .prose { margin-top: 1rem; }
.prose--soft { color: var(--silver); font-size: var(--fs-note); line-height: 1.7; }
.annotation {
  font-size: var(--fs-label);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--sage);
}
.anno {
  writing-mode: vertical-rl;
  font-size: var(--fs-anno);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--sage);
}
.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  letter-spacing: -.01em;
}
.num--xl { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1; color: var(--warm); }
.num--amber { color: var(--amber); }
.num--scarlet { color: var(--scarlet); }
.num--neon { color: var(--neon); }

.mark {
  display: inline-block;
  width: 11px;
  height: 15px;
  border-radius: 1px;
  vertical-align: -2px;
}
.mark--yellow { background: var(--amber); }
.mark--red { background: var(--scarlet); }

/* ---- tag / chip / button ---- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .2rem .62rem;
  border: 1px solid rgba(245, 239, 228, .34);
  font-size: var(--fs-label);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--warm);
  background: transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.tag:hover { border-color: var(--neon); color: var(--neon); }
.tag--amber { border-color: rgba(240, 180, 41, .62); color: var(--amber); }
.tag--scarlet { border-color: rgba(225, 84, 60, .62); color: var(--scarlet); }
.tag--neon { border-color: var(--line-neon); color: var(--neon); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .44rem .9rem;
  border: 1px solid rgba(201, 214, 208, .28);
  background: transparent;
  color: var(--silver);
  font-size: .86rem;
  letter-spacing: .04em;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.chip:hover { border-color: var(--neon); color: var(--warm); }
.chip[aria-pressed="true"] { border-color: var(--neon); background: var(--neon); color: var(--ink); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .74rem 1.25rem;
  border: 1px solid rgba(201, 214, 208, .38);
  background: linear-gradient(90deg, rgba(79, 224, 164, .9) 0 3px, transparent 3px);
  color: var(--warm);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .94rem;
  letter-spacing: .05em;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.btn:hover,
.btn:focus-visible { border-color: var(--neon); color: var(--neon); }
.btn--solid {
  background: var(--neon);
  border-color: var(--neon);
  color: var(--ink);
}
.btn--solid:hover,
.btn--solid:focus-visible { background: transparent; color: var(--neon); }

/* ---- panels ---- */
.panel {
  position: relative;
  padding: clamp(1.15rem, 2.6vw, 1.9rem);
  background: var(--indigo);
  border: 1px solid var(--line);
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
}
.panel--night { background: var(--night); }
.panel--wine { background: var(--wine); border-color: rgba(225, 84, 60, .3); }
.panel--ink { background: var(--ink); }
.panel__no {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: .16em;
  color: var(--neon);
}

/* ---- media ---- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--ink);
}
.media::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, rgba(79, 224, 164, .07) 0 2px, transparent 2px 13px);
  pointer-events: none;
  z-index: 1;
}
.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.85) contrast(1.08) brightness(.82);
}
.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 4 / 5; }
.media--square { aspect-ratio: 1 / 1; }
.media__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(180deg, rgba(5, 29, 23, .08) 0%, rgba(5, 29, 23, .78) 100%);
}
.media__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 3;
  padding: .8rem 1rem;
  font-size: var(--fs-note);
  color: var(--warm);
}

/* ---- decorative ---- */
.diag {
  position: relative;
  height: 1px;
  background: var(--line);
  margin-block: clamp(2rem, 6vw, 4.5rem);
}
.diag::after {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  width: clamp(64px, 14vw, 180px);
  height: 2px;
  background: var(--neon);
}
.trail { border-top: 1px dashed var(--line-neon); }
.slash-band {
  height: clamp(26px, 5vw, 62px);
  background: var(--ink);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 62%);
}

/* ---- breadcrumb ---- */
.breadcrumb {
  padding-block: 1rem;
  font-size: .82rem;
  color: var(--sage);
}
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
}
.breadcrumb li { display: inline-flex; align-items: center; gap: .45rem; }
.breadcrumb li + li::before { content: "/"; color: rgba(143, 167, 155, .62); }
.breadcrumb a { transition: color var(--dur) var(--ease); }
.breadcrumb a:hover { color: var(--neon); }
.breadcrumb [aria-current="page"] { color: var(--warm); }

/* ---- reveal ---- */
html.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}
html.has-js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---- footer ---- */
.site-footer {
  position: relative;
  background: var(--ink);
  border-top: 1px solid var(--line-neon);
  color: var(--sage);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, rgba(79, 224, 164, .05) 0 1px, transparent 1px 74px);
}
.site-footer__inner {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(2.2rem, 5.4vw, 3.8rem) var(--gutter) 1.6rem;
}
.footer-grid {
  display: grid;
  gap: clamp(1.7rem, 4vw, 3rem);
  grid-template-columns: 1fr;
}
.footer-col__title {
  display: flex;
  align-items: center;
  gap: .58rem;
  margin-bottom: 1rem;
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--neon);
}
.footer-col__title::before {
  content: "";
  width: 14px;
  height: 2px;
  background: var(--neon);
  flex: 0 0 auto;
}
.footer-list {
  display: grid;
  gap: .58rem;
  font-size: .95rem;
}
.footer-list a {
  color: var(--silver);
  transition: color var(--dur) var(--ease);
}
.footer-list a:hover,
.footer-list a:focus-visible { color: var(--neon); }

.footer-contact { display: grid; gap: .85rem; font-size: .95rem; }
.footer-contact__k {
  display: block;
  margin-bottom: .16rem;
  font-size: var(--fs-label);
  letter-spacing: .16em;
  color: var(--sage);
}
.footer-contact__v {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .88rem;
  color: var(--warm);
  word-break: break-all;
  line-height: 1.6;
}
.footer-contact__v--text {
  font-family: var(--font-display);
  font-size: .95rem;
  word-break: normal;
}

.footer-note {
  margin-top: .95rem;
  font-size: .87rem;
  line-height: 1.7;
  color: var(--sage);
}
.footer-note--lead {
  margin-top: 0;
  color: var(--silver);
  font-size: .93rem;
}
.footer-filing {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .55rem;
  margin-top: 1.1rem;
  padding-top: .9rem;
  border-top: 1px dashed var(--line-neon);
}
.footer-filing__k { font-size: var(--fs-label); letter-spacing: .16em; color: var(--sage); }
.footer-filing__v { font-family: var(--font-mono); font-size: .86rem; color: var(--warm); }

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .5rem 1.4rem;
  margin-top: clamp(1.7rem, 4vw, 2.7rem);
  padding-top: 1.2rem;
  border-top: 1px solid rgba(143, 167, 155, .22);
  font-size: .82rem;
}
.footer-legal__brand {
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--warm);
}
.footer-legal__meta {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--sage);
}

/* ---- responsive ---- */
@media (min-width: 640px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 720px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
  .split { grid-template-columns: 7fr 5fr; align-items: start; }
  .split--reverse { grid-template-columns: 5fr 7fr; }
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1.05fr 1.15fr .9fr; }
}

@media (max-width: 899px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 5;
    background: var(--ink);
    border-bottom: 1px solid var(--line-neon);
    box-shadow: var(--shadow);
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 320ms var(--ease), opacity 200ms var(--ease);
  }
  .site-nav[data-open] {
    max-height: 78vh;
    opacity: 1;
    overflow-y: auto;
  }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: .35rem var(--gutter) 1.15rem;
  }
  .site-nav__item { border-bottom: 1px solid rgba(143, 167, 155, .16); }
  .site-nav__link {
    padding: .92rem 0;
    font-size: 1.02rem;
  }
  .site-nav__link::after { display: none; }
  .site-nav__link[aria-current="page"] { color: var(--neon); }
  .site-nav__link[aria-current="page"]::before {
    content: "";
    display: inline-block;
    width: 8px;
    height: 8px;
    margin-right: .6rem;
    vertical-align: middle;
    background: var(--neon);
    clip-path: polygon(0 0, 100% 0, 50% 100%);
  }
}

@media (max-width: 520px) {
  .brand { gap: .45rem; }
  .brand__spark { width: 16px; }
  .brand__domain { font-size: 10px; }
  .mobile-strip__label { font-size: .8rem; }
  .mobile-strip__cta { padding-inline: .8rem; font-size: .78rem; }
  .footer-legal { flex-direction: column; align-items: flex-start; }
}

/* ---- motion preference ---- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  html.has-js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
  .scroll-progress { transition: none !important; }
}