/* =========================================================
   雷火电竞 — 共享样式表 /assets/site.css
   夜场数据舱 × 体育编辑部 · 框架式书脊导航
   ========================================================= */

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}
body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote, dl, dt, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img, svg, video, canvas { display: block; max-width: 100%; }
table { width: 100%; border-collapse: collapse; border-spacing: 0; }
hr { border: 0; }
main:focus { outline: none; }

/* ---------- tokens ---------- */
:root {
  --ink: #0B0B0F;
  --ink-2: #1C1512;
  --paper: #F4EEDF;
  --paper-card: #FBF7EC;
  --violet: #7C3AED;
  --orange: #FF6A1A;
  --cyan: #18B6C9;
  --red: #C0342B;
  --gold: #E8B44A;
  --grain: #D8CFC0;
  --green: #2F9E7A;

  --rule: rgba(28, 21, 18, .16);
  --rule-inv: rgba(244, 238, 223, .14);

  --font-display: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Songti SC", "Source Han Serif SC", "Noto Serif SC", Georgia, "SimSun", serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;

  --rail: 0px;
  --wrap: 1200px;
  --gutter: 18px;
}

/* ---------- base ---------- */
body {
  min-height: 100vh;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  display: block;
  background-color: var(--paper);
  background-image: radial-gradient(rgba(28, 21, 18, .045) 1px, transparent 1px);
  background-size: 22px 22px;
  color: var(--ink-2);
}

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

::selection {
  background: var(--violet);
  color: #FFFFFF;
}

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

.section { padding-block: 46px; }

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--ink-2);
  color: var(--paper);
  border-bottom: 1px solid var(--rule-inv);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--violet) 55%, var(--cyan));
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 14px var(--gutter) 13px;
}

/* skip link */
.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 200;
  transform: translateY(-130%);
  padding: 10px 16px;
  background: var(--orange);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  transition: transform .18s ease;
}
.skip-link:focus { transform: translateY(0); }

/* brand */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.brand__glyph {
  flex: none;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--orange), var(--red));
  color: var(--paper);
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1;
}
.brand__words {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}
.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--paper);
}
.brand__tag {
  font-size: 11px;
  letter-spacing: .14em;
  color: rgba(244, 238, 223, .5);
}

/* toggle */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-left: auto;
  padding: 8px 13px;
  border: 1px solid var(--rule-inv);
  color: var(--paper);
  font-size: 13px;
  letter-spacing: .12em;
  transition: border-color .18s ease, color .18s ease;
}
.nav-toggle:hover { border-color: var(--violet); color: var(--gold); }
.nav-toggle__icon {
  position: relative;
  width: 16px;
  height: 12px;
  flex: none;
}
.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform .18s ease, top .18s ease, bottom .18s ease;
}
.nav-toggle__icon::before { top: 0; }
.nav-toggle__icon::after { bottom: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { top: 5px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after { bottom: 5.5px; transform: rotate(-45deg); }

/* nav */
.site-nav {
  display: none;
  flex-basis: 100%;
  order: 3;
  min-width: 0;
}
.site-nav__title {
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--grain);
  margin-bottom: 10px;
}
.site-nav__list {
  counter-reset: navitem;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.site-nav__list a {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 12px;
  font-size: 15px;
  letter-spacing: .02em;
  color: rgba(244, 238, 223, .82);
  border-left: 2px solid transparent;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}
.site-nav__list a::before {
  counter-increment: navitem;
  content: counter(navitem, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--violet);
}
.site-nav__list a:hover {
  color: var(--paper);
  background: rgba(124, 58, 237, .18);
}
.site-nav__list a[aria-current="page"] {
  color: var(--paper);
  background: linear-gradient(90deg, rgba(124, 58, 237, .9), rgba(124, 58, 237, .1));
  border-left-color: var(--orange);
}
.site-nav__list a[aria-current="page"]::before { color: var(--gold); }
.site-nav__hint {
  margin-top: 14px;
  padding-left: 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(244, 238, 223, .48);
  border-left: 2px solid rgba(24, 182, 201, .5);
}
.site-nav__stamp {
  margin-top: 16px;
  padding-left: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: rgba(232, 180, 74, .7);
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  position: relative;
  background: var(--ink-2);
  color: rgba(244, 238, 223, .8);
  border-top: 1px solid var(--rule-inv);
  padding: 40px var(--gutter) 24px;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 45%, var(--orange));
}
.site-footer__grid {
  max-width: var(--wrap);
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}
.site-footer__col { min-width: 0; }
.site-footer__brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.005em;
  color: var(--paper);
  margin-bottom: 9px;
}
.site-footer__note {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 238, 223, .58);
  max-width: 34ch;
}
.site-footer__head {
  font-family: var(--font-serif);
  font-size: 12.5px;
  letter-spacing: .18em;
  color: var(--gold);
  margin-bottom: 14px;
}
.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 9px 20px;
}
.site-footer__links a {
  font-size: 14px;
  color: rgba(244, 238, 223, .78);
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(244, 238, 223, .22);
  transition: color .18s ease, border-color .18s ease;
}
.site-footer__links a:hover { color: var(--orange); border-color: var(--orange); }
.site-footer__meta {
  display: grid;
  gap: 9px;
  font-size: 14px;
  line-height: 1.65;
}
.site-footer__meta li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}
.site-footer__meta span {
  flex: none;
  width: 68px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--cyan);
}
.site-footer__base {
  max-width: var(--wrap);
  margin: 30px auto 0;
  padding-top: 16px;
  border-top: 1px dashed var(--rule-inv);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 20px;
  font-size: 13px;
  color: rgba(244, 238, 223, .5);
}
.site-footer__copy { min-width: 0; }
.site-footer__icp {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
}

/* =========================================================
   SHARED COMPONENTS
   ========================================================= */
.eyebrow {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 12.5px;
  letter-spacing: .2em;
  color: var(--red);
  margin-bottom: 12px;
}

.divider {
  border-top: 1px dashed var(--rule);
  margin-block: 26px;
}

.card {
  position: relative;
  background: var(--paper-card);
  border: 1px solid var(--rule);
  padding: 24px 22px 26px;
}
.card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 16px;
  width: 44px;
  height: 3px;
  background: var(--violet);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 22px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  border: 1px solid transparent;
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--orange); color: #1C1512; }
.btn--primary:hover { background: #FF8340; }
.btn--violet { background: var(--violet); color: #FFFFFF; }
.btn--violet:hover { background: #8F55F5; }
.btn--ghost { border-color: currentColor; color: inherit; background: transparent; }
.btn--ghost:hover { background: rgba(124, 58, 237, .16); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--violet);
  text-transform: uppercase;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-size: 13px;
  color: rgba(28, 21, 18, .6);
}
.breadcrumb li { display: flex; align-items: center; }
.breadcrumb li + li::before {
  content: "/";
  margin: 0 9px;
  font-family: var(--font-mono);
  color: var(--grain);
}
.breadcrumb a:hover { color: var(--violet); }

/* filter chips */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.filter-chip {
  padding: 7px 14px;
  border: 1px solid var(--rule);
  background: transparent;
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}
.filter-chip:hover { border-color: var(--violet); color: var(--violet); }
.filter-chip[aria-pressed="true"] {
  background: var(--violet);
  border-color: var(--violet);
  color: #FFFFFF;
}

/* media frame */
.media {
  position: relative;
  overflow: hidden;
  display: block;
  background: var(--ink-2);
  border: 1px solid var(--rule);
}
.media > img,
.media > picture > img,
.media > svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--3x4 { aspect-ratio: 3 / 4; }
.media__scan {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(244, 238, 223, .07) 0 1px,
    rgba(244, 238, 223, 0) 1px 4px
  );
}

/* scroll progress (injected by JS) */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 50%, var(--orange));
  pointer-events: none;
  z-index: 90;
}

/* reveal */
[data-reveal] { transition: opacity .5s ease, transform .5s ease; }
.reveal-ready [data-reveal] { opacity: 0; transform: translateY(14px); }
.reveal-ready [data-reveal].is-visible { opacity: 1; transform: none; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 899px) {
  .site-nav[data-open] {
    display: flex;
    flex-direction: column;
    width: 100%;
    margin-top: 4px;
    padding: 10px 0 14px;
    border-top: 1px dashed var(--rule-inv);
  }
}

@media (min-width: 720px) {
  :root { --gutter: 28px; }
  .section { padding-block: 62px; }
  .site-footer { padding: 50px var(--gutter) 28px; }
  .site-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
  .site-footer__col--brand { grid-column: 1 / -1; }
}

@media (min-width: 900px) {
  :root { --rail: 236px; --gutter: 34px; }

  body { padding-left: var(--rail); }

  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: auto;
    width: var(--rail);
    border-bottom: 0;
    border-right: 1px solid var(--rule-inv);
    overflow: hidden;
  }
  .site-header__inner {
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    height: 100%;
    gap: 0;
    padding: 36px 20px 22px;
    overflow-y: auto;
  }
  .brand {
    padding-bottom: 22px;
    border-bottom: 1px dashed var(--rule-inv);
  }
  .nav-toggle { display: none; }
  .site-nav {
    display: flex;
    flex: 1 1 auto;
    flex-basis: auto;
    order: 0;
    flex-direction: column;
    margin-top: 26px;
  }
  .site-nav__hint { margin-top: auto; }
}

@media (min-width: 1200px) {
  :root { --rail: 260px; --wrap: 1240px; }
  .section { padding-block: 76px; }
  .site-footer__grid { grid-template-columns: 1.4fr .9fr 1.35fr; }
  .site-footer__col--brand { grid-column: auto; }
}

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