/* =========================================================
   天天电竞主站 · /assets/site.css
   共享层：reset / 变量 / 中文排版 / 框架式头部 / 页脚 / 基础组件
   ========================================================= */

/* ---------- 1. 设计变量 ---------- */
:root {
  --bg: #0A0E18;
  --panel: #141B2B;
  --line: #2A3348;
  --ink: #F2F5FA;
  --muted: #9AA5BC;
  --accent: #FF7A18;
  --cyan: #28E3D2;
  --region: #6E6A8A;
  --region-ink: #C9C6DA;
  --ok: #4CD98A;
  --warn: #E25C5C;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;
  --font-narrow: "Arial Narrow", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;

  --shell-max: 1440px;
  --frame-x: 64px;
  --radius: 2px;
  --hair: 1px solid var(--line);
  --t-fast: 180ms;
  --t-base: 320ms;
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100%;
  background-color: var(--bg);
  background-image:
    linear-gradient(rgba(42, 51, 72, 0.34) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 51, 72, 0.34) 1px, transparent 1px),
    radial-gradient(1200px 620px at 50% -12%, rgba(40, 227, 210, 0.07), transparent 72%);
  background-size: 72px 72px, 72px 72px, 100% 100%;
  background-repeat: repeat, repeat, no-repeat;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

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

#main-content { display: block; scroll-margin-top: 150px; }

/* ---------- 3. 中文排版 ---------- */
h1, h2, h3, h4 {
  margin: 0 0 0.6em;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}

h1 { font-size: 40px; line-height: 1.2; }
h2 { font-size: 26px; line-height: 1.31; font-weight: 600; }
h3 { font-size: 20px; font-weight: 600; }

p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

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

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

.display {
  font-family: var(--font-narrow);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* ---------- 4. 布局基元 ---------- */
.wrap {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--frame-x);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }

.prose {
  max-width: 40rem;
  font-size: 16px;
  line-height: 1.75;
  color: #D8DEEB;
}
.prose h2, .prose h3 { margin-top: 1.6em; }
.prose ul, .prose ol { margin: 0 0 1.1em; padding-left: 1.4em; list-style: disc; }
.prose li { margin-bottom: 0.4em; }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(42, 51, 72, 0.9);
}
.section-head__index {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 18px;
  letter-spacing: 0.08em;
  color: var(--accent);
}
.section-head__title {
  margin: 0;
  font-family: var(--font-narrow);
  font-size: 26px;
  line-height: 34px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 18px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  transition: color var(--t-fast) ease, background var(--t-fast) ease, border-color var(--t-fast) ease;
}

.btn:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(40, 227, 210, 0.07);
}

.btn--primary {
  color: #0A0E18;
  font-weight: 700;
  background: var(--accent);
  border-color: var(--accent);
}
.btn--primary:hover {
  color: #0A0E18;
  background: #FF913F;
  border-color: #FF913F;
}

.btn--ghost { background: rgba(20, 27, 43, 0.6); }

.btn[aria-pressed="true"] {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(255, 122, 24, 0.12);
}

/* ---------- 6. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 26px;
  padding: 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 18px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--muted);
  background: rgba(110, 106, 138, 0.12);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  white-space: nowrap;
}
.tag--region {
  color: var(--region-ink);
  border-color: rgba(110, 106, 138, 0.6);
  background: rgba(110, 106, 138, 0.18);
}
.tag--live {
  color: var(--ok);
  border-color: rgba(76, 217, 138, 0.5);
  background: rgba(76, 217, 138, 0.08);
}
.tag--warn {
  color: var(--warn);
  border-color: rgba(226, 92, 92, 0.5);
  background: rgba(226, 92, 92, 0.08);
}

/* ---------- 7. 卡片 ---------- */
.card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}
.card--tape::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 20px;
  width: 56px;
  height: 3px;
  background: var(--accent);
}
.card__index {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 18px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}
.card__title {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 18px;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 20px;
}
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 6px; }
.breadcrumb li { display: inline-flex; align-items: center; gap: 6px; }
.breadcrumb li::after { content: "/"; color: var(--line); }
.breadcrumb li:last-child::after { content: ""; }
.breadcrumb a { color: var(--muted); border-bottom: 1px solid transparent; }
.breadcrumb a:hover { color: var(--cyan); border-bottom-color: var(--cyan); }
.breadcrumb [aria-current="page"] { color: var(--ink); }

/* ---------- 9. 图片容器 ---------- */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.media-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(40, 227, 210, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(40, 227, 210, 0.07) 1px, transparent 1px);
  background-size: 32px 32px;
}
.media-frame--plate { aspect-ratio: 4 / 3; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--map { aspect-ratio: 21 / 9; }
.media-frame--wide { aspect-ratio: 2 / 1; }

.media-frame__label {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--cyan);
  background: rgba(10, 14, 24, 0.88);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

/* ---------- 10. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 200;
  padding: 12px 18px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #0A0E18;
  background: var(--accent);
  border-radius: var(--radius);
  text-decoration: none;
  transition: top 160ms ease;
}
.skip-link:focus { top: 16px; color: #0A0E18; }

/* ---------- 11. 框架式头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(10, 14, 24, 0.94);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

/* 上层索引条 */
.site-header__strip { position: relative; z-index: 2; }

.site-header__top {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  color: var(--ink);
  text-decoration: none;
  flex: 0 0 auto;
}
.brand:hover { color: var(--ink); }

.brand__mark {
  width: 11px;
  height: 11px;
  background: var(--accent);
  box-shadow: 0 0 0 1px rgba(255, 122, 24, 0.4), 0 0 14px rgba(255, 122, 24, 0.55);
  transform: rotate(45deg);
}

.brand__text {
  font-family: var(--font-narrow);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.header-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 auto 0 0;
  font-size: 13px;
  line-height: 18px;
  color: var(--muted);
}

.header-note__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 10px rgba(76, 217, 138, 0.85);
  flex: 0 0 auto;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

/* 下层导航轨 */
.site-header__nav {
  position: relative;
  z-index: 2;
  border-top: 1px dashed rgba(42, 51, 72, 0.9);
  background: rgba(20, 27, 43, 0.55);
}

.site-navrow {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 56px;
}

.region-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  min-height: 44px;
  padding: 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 18px;
  letter-spacing: 0.06em;
  color: var(--region-ink);
  background: rgba(110, 106, 138, 0.16);
  border: 1px solid rgba(110, 106, 138, 0.55);
  border-radius: var(--radius);
  cursor: pointer;
  transition: color var(--t-fast) ease, background var(--t-fast) ease, border-color var(--t-fast) ease;
}
.region-trigger:hover {
  color: #FFFFFF;
  background: rgba(110, 106, 138, 0.3);
  border-color: var(--region-ink);
}
.region-trigger[aria-expanded="true"] {
  color: var(--ink);
  border-color: var(--accent);
  box-shadow: inset 0 -2px 0 var(--accent);
}

.region-trigger__cube {
  width: 8px;
  height: 8px;
  background: var(--region-ink);
  box-shadow: 0 0 8px rgba(201, 198, 218, 0.6);
  flex: 0 0 auto;
}
.region-trigger[aria-expanded="true"] .region-trigger__cube { background: var(--accent); }

.site-nav { flex: 1 1 auto; }

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav__list a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  font-family: var(--font-narrow);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: color var(--t-fast) ease, background var(--t-fast) ease, border-color var(--t-fast) ease;
}

.site-nav__list a:hover {
  color: var(--ink);
  background: rgba(40, 227, 210, 0.07);
  border-color: rgba(40, 227, 210, 0.35);
}

.site-nav__list a[aria-current="page"] {
  color: var(--ink);
  background: var(--panel);
  border-color: var(--line);
}
.site-nav__list a[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  background: var(--accent);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  margin-left: auto;
  padding: 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color var(--t-fast) ease, color var(--t-fast) ease;
}
.nav-toggle:hover { color: var(--cyan); border-color: var(--cyan); }

.nav-toggle__bars {
  position: relative;
  width: 16px;
  height: 10px;
  flex: 0 0 auto;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: var(--cyan);
  transition: transform var(--t-fast) ease;
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(4px) rotate(45deg); background: var(--accent); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-4px) rotate(-45deg); background: var(--accent); }

/* 赛区抽屉 */
.region-drawer {
  position: relative;
  z-index: 2;
  background: linear-gradient(180deg, rgba(20, 27, 43, 0.98), rgba(10, 14, 24, 0.98));
  border-bottom: 1px solid var(--line);
}
.region-drawer[hidden] { display: none; }

.region-drawer__head {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 16px;
}
.region-drawer__title {
  margin: 0 auto 0 0;
  font-size: 13px;
  line-height: 18px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}
.region-drawer__close {
  min-height: 44px;
  padding: 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease;
}
.region-drawer__close:hover { color: var(--accent); border-color: var(--accent); }

.region-drawer__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 14px 0 20px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.region-chip {
  min-height: 48px;
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--muted);
  background: var(--bg);
  cursor: pointer;
  transition: color var(--t-fast) ease, background var(--t-fast) ease;
}
.region-chip:hover { color: var(--cyan); background: rgba(40, 227, 210, 0.06); }
.region-chip[aria-pressed="true"] {
  color: var(--ink);
  background: var(--panel);
  box-shadow: inset 3px 0 0 var(--accent);
}

/* 滚动进度轨 */
.scroll-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 4;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--accent));
  transition: width 90ms linear;
}

/* ---------- 12. 页脚 ---------- */
.site-footer {
  margin-top: 72px;
  background: linear-gradient(180deg, rgba(20, 27, 43, 0.8), rgba(10, 14, 24, 0.98) 72%);
  border-top: 1px solid var(--line);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 2fr) minmax(0, 1.3fr);
  gap: 40px 32px;
  padding-top: 56px;
}

.site-footer__lead { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; }
.site-footer__lead .brand { margin-bottom: 2px; }

.site-footer__line {
  margin: 0;
  max-width: 30ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.footer-col__title {
  margin: 0 0 12px;
  padding-bottom: 8px;
  font-size: 13px;
  line-height: 18px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--cyan);
  border-bottom: 1px dashed rgba(42, 51, 72, 0.9);
}

.footer-col__list li { margin-bottom: 2px; }
.footer-col__list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-right: 8px;
  font-size: 14px;
  letter-spacing: 0.03em;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease;
}
.footer-col__list a:hover { color: var(--ink); border-bottom-color: var(--accent); }

.footer-meta li {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  overflow-wrap: anywhere;
}
.footer-meta__key { color: var(--cyan); font-size: 13px; flex: 0 0 auto; }
.footer-meta__val { flex: 1 1 200px; }

.site-footer__bottom {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 24px;
  margin-top: 8px;
  padding: 20px 0 28px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 18px;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.site-footer__bottom p { margin: 0; }
.footer-icp { color: var(--muted); }
.footer-cadence { margin-left: auto; color: var(--accent); }

/* ---------- 13. 滚动显现 ---------- */
[data-reveal] { opacity: 1; transform: none; }
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 480ms ease, transform 480ms ease;
  will-change: opacity, transform;
}
.has-js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 14. 响应式 ---------- */
@media (max-width: 1180px) {
  :root { --frame-x: 40px; }
  .site-footer__inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1.8fr); }
  .site-footer__contact { grid-column: 1 / -1; }
}

@media (max-width: 1080px) {
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  h1 { font-size: 34px; }
  h2 { font-size: 24px; }
}

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
    padding: 6px var(--frame-x) 20px;
    background: rgba(10, 14, 24, 0.99);
    border-bottom: 1px solid var(--line);
  }
  .site-nav[data-open] { display: block; }

  .site-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav__list li { border-bottom: 1px dashed rgba(42, 51, 72, 0.8); }
  .site-nav__list li:last-child { border-bottom: 0; }
  .site-nav__list a {
    width: 100%;
    min-height: 52px;
    padding: 0 14px;
    font-size: 15px;
    border: 0;
  }
  .site-nav__list a[aria-current="page"] {
    background: rgba(20, 27, 43, 0.9);
    box-shadow: inset 3px 0 0 var(--accent);
  }
  .site-nav__list a[aria-current="page"]::before { display: none; }

  .region-drawer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-2 { grid-template-columns: minmax(0, 1fr); }
  .grid-3 { grid-template-columns: minmax(0, 1fr); }
  .site-footer__inner { grid-template-columns: minmax(0, 1fr); }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  :root { --frame-x: 20px; }
  .header-note { display: none; }
  .grid-12 { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  h1 { font-size: 28px; }
  h2 { font-size: 22px; line-height: 1.35; }
  .site-footer { margin-top: 48px; }
  .site-footer__inner { padding-top: 40px; gap: 32px; }
  .footer-cadence { margin-left: 0; }
}

@media (max-width: 640px) {
  .site-header__top { flex-wrap: wrap; padding-block: 10px; gap: 10px 12px; }
  .header-actions { margin-left: auto; }
  .header-actions .btn { padding: 0 12px; font-size: 12px; }
  .region-drawer__grid { grid-template-columns: minmax(0, 1fr); }
  .footer-cols { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 15. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .has-js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .scroll-progress { transition: none; }
}