/* ============================================================
   爱游戏赛场 IGAME — /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 命令栏头部 / 页脚 / 基础组件
   ============================================================ */

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 96px; }
body, h1, h2, h3, h4, p, ul, ol, li, figure, blockquote, dl, dd { 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; cursor: pointer; }
a { color: inherit; }
[hidden] { display: none !important; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 变量 ---------- */
:root {
  --ig-void: #070B14;
  --ig-board: #0D1626;
  --ig-line: #16233A;
  --ig-steel: #243450;
  --ig-silver: #C9D6E6;
  --ig-mist: #7C8CA6;
  --ig-lime: #C8FF3D;
  --ig-ember: #FF5A2B;
  --ig-cyan: #6FF3DC;
  --ig-white: #F5F9FF;
  --ig-ink: #08150A;

  --ig-header-h: 64px;
  --ig-max: 1440px;
  --ig-gutter: clamp(20px, 4vw, 56px);

  --ig-radius-s: 6px;
  --ig-radius-m: 14px;
  --ig-radius-l: 28px;
  --ig-blob: 42% 58% 55% 45% / 48% 42% 58% 52%;

  --ig-ease: cubic-bezier(.22, .61, .36, 1);
  --ig-font-display: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", system-ui, sans-serif;
  --ig-font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", system-ui, sans-serif;
  --ig-font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", Menlo, monospace;
}

/* ---------- 基础画布 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ig-void);
  background-image:
    radial-gradient(1200px 620px at 10% -12%, rgba(36, 52, 80, .60), transparent 62%),
    radial-gradient(1000px 560px at 92% 6%, rgba(22, 35, 58, .78), transparent 66%),
    radial-gradient(760px 760px at 50% 118%, rgba(111, 243, 220, .07), transparent 72%);
  background-attachment: fixed;
  color: var(--ig-silver);
  font-family: var(--ig-font-body);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
::selection { background: var(--ig-lime); color: var(--ig-ink); }
:focus-visible {
  outline: 2px solid var(--ig-lime);
  outline-offset: 2px;
  border-radius: 4px;
}
body.ig-nav-open { overflow: hidden; }
@media (min-width: 1024px) { body.ig-nav-open { overflow: visible; } }

/* ---------- 跳转链 ---------- */
.ig-skip {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 220;
  padding: 12px 20px;
  border-radius: 0 0 14px 14px;
  background: var(--ig-lime);
  color: var(--ig-ink);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .04em;
  text-decoration: none;
  transition: top .18s var(--ig-ease);
}
.ig-skip:focus { top: 0; }

/* ---------- 容器 / 区块 ---------- */
.ig-container {
  width: 100%;
  max-width: var(--ig-max);
  margin: 0 auto;
  padding-inline: var(--ig-gutter);
}
.ig-section { position: relative; padding-block: clamp(56px, 8vw, 110px); }
.ig-section__head { display: grid; gap: 14px; margin-bottom: clamp(24px, 4vw, 48px); }
.ig-section__index {
  font-family: var(--ig-font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .26em;
  color: var(--ig-mist);
  text-transform: uppercase;
}
.ig-section__title {
  font-family: var(--ig-font-display);
  font-weight: 900;
  font-size: clamp(28px, 4.4vw, 64px);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--ig-white);
  transform: skewX(-1.5deg);
}
.ig-section__lead { max-width: 34em; color: var(--ig-silver); font-size: 17px; }
.ig-rule {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--ig-steel), rgba(36, 52, 80, 0));
  margin-block: clamp(20px, 3vw, 40px);
}

/* ---------- 展示字 ---------- */
.ig-display {
  font-family: var(--ig-font-display);
  font-weight: 900;
  font-size: clamp(44px, 9vw, 128px);
  line-height: .92;
  letter-spacing: -.02em;
  color: var(--ig-white);
  transform: skewX(-1.5deg);
  text-transform: uppercase;
}
.ig-display--outline {
  color: transparent;
  -webkit-text-stroke: 1px rgba(201, 214, 230, .55);
  text-stroke: 1px rgba(201, 214, 230, .55);
}
.ig-num {
  font-family: var(--ig-font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--ig-lime);
}
.ig-annotation {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--ig-font-mono);
  font-size: 12px;
  letter-spacing: .26em;
  color: var(--ig-mist);
  text-transform: uppercase;
  user-select: none;
}

/* ---------- 网格 ---------- */
.ig-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}
.ig-span { grid-column: span var(--ig-span, 12); }
.ig-span-4 { grid-column: span 4; }
.ig-span-6 { grid-column: span 6; }
.ig-span-8 { grid-column: span 8; }
.ig-span-12 { grid-column: span 12; }
@media (max-width: 1023px) {
  .ig-span-4, .ig-span-6, .ig-span-8 { grid-column: span 12; }
}
@media (max-width: 719px) {
  .ig-span-4 { grid-column: span 12; }
}

/* ---------- 按钮 ---------- */
.ig-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .05em;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .16s var(--ig-ease), background-color .16s var(--ig-ease),
              color .16s var(--ig-ease), border-color .16s var(--ig-ease);
}
.ig-btn:hover { transform: translateY(-1px); }
.ig-btn:active { transform: translateY(0); }
.ig-btn--primary {
  background: var(--ig-lime);
  color: var(--ig-ink);
  box-shadow: 0 8px 22px -12px rgba(200, 255, 61, .85);
}
.ig-btn--primary:hover { background: #D8FF6B; }
.ig-btn--ghost {
  background: transparent;
  border-color: var(--ig-steel);
  color: var(--ig-silver);
}
.ig-btn--ghost:hover { border-color: var(--ig-cyan); color: var(--ig-cyan); background: rgba(111, 243, 220, .07); }
.ig-btn:focus-visible { outline-offset: 3px; }

/* ---------- 状态点 / 状态标签 ---------- */
.ig-dot {
  display: inline-block;
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ig-mist);
}
.ig-dot--live {
  background: var(--ig-lime);
  animation: ig-dot-pulse 2.4s ease-in-out infinite;
}
.ig-dot--calm { background: var(--ig-mist); opacity: .8; }
@keyframes ig-dot-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(200, 255, 61, .45); transform: scale(1); }
  50% { box-shadow: 0 0 0 6px rgba(200, 255, 61, 0); transform: scale(1.06); }
}
.ig-state {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 11px;
  border-radius: 999px;
  border: 1px solid var(--ig-steel);
  background: rgba(22, 35, 58, .6);
  font-family: var(--ig-font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--ig-silver);
}
.ig-state--live { border-color: rgba(200, 255, 61, .5); color: var(--ig-lime); background: rgba(200, 255, 61, .08); }
.ig-state--alert { border-color: rgba(255, 90, 43, .55); color: var(--ig-ember); background: rgba(255, 90, 43, .1); }

/* ---------- 筛选片 / 页签 ---------- */
.ig-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--ig-steel);
  background: rgba(22, 35, 58, .6);
  color: var(--ig-silver);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .03em;
  cursor: pointer;
  transition: color .16s var(--ig-ease), border-color .16s var(--ig-ease), background-color .16s var(--ig-ease);
}
.ig-chip:hover { border-color: var(--ig-cyan); color: var(--ig-white); }
.ig-chip[aria-pressed="true"] { background: var(--ig-lime); border-color: var(--ig-lime); color: var(--ig-ink); }
.ig-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  border-bottom: 1px solid var(--ig-steel);
}
.ig-tab {
  padding: 10px 16px;
  border-bottom: 2px solid transparent;
  color: var(--ig-mist);
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  cursor: pointer;
  transition: color .16s var(--ig-ease), border-color .16s var(--ig-ease);
}
.ig-tab:hover { color: var(--ig-silver); }
.ig-tab[aria-selected="true"] { color: var(--ig-white); border-bottom-color: var(--ig-lime); }
.ig-tabpanel { padding-top: clamp(16px, 2.4vw, 28px); }

/* ---------- 面包屑 ---------- */
.ig-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--ig-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ig-mist);
}
.ig-crumbs__item { display: inline-flex; align-items: center; gap: 8px; }
.ig-crumbs__item a { color: var(--ig-mist); text-decoration: none; transition: color .16s var(--ig-ease); }
.ig-crumbs__item a:hover { color: var(--ig-cyan); }
.ig-crumbs__item[aria-current="page"] { color: var(--ig-silver); }
.ig-crumbs__sep { color: var(--ig-steel); }

/* ---------- 图片容器 ---------- */
.ig-media {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-radius: var(--ig-radius-m);
  aspect-ratio: var(--ig-ratio, 16 / 9);
  background-color: var(--ig-board);
  background-image:
    linear-gradient(135deg, rgba(36, 52, 80, .9), rgba(13, 22, 38, .96)),
    repeating-linear-gradient(115deg, rgba(111, 243, 220, .10) 0 1px, transparent 1px 24px);
}
.ig-media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.92) contrast(1.06) brightness(.94);
}
.ig-media__caption {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 2;
  padding: 4px 11px;
  border-radius: 999px;
  background: rgba(7, 11, 20, .74);
  color: var(--ig-silver);
  font-family: var(--ig-font-mono);
  font-size: 11px;
  letter-spacing: .08em;
}
.ig-media--wide { --ig-ratio: 21 / 9; }
.ig-media--tall { --ig-ratio: 3 / 4; }
.ig-media--square { --ig-ratio: 1 / 1; }
.ig-media--blob { border-radius: var(--ig-blob); }

/* ---------- 滚动显现 ---------- */
html.ig-js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .3s var(--ig-ease), transform .3s var(--ig-ease);
}
html.ig-js [data-reveal].is-visible { opacity: 1; transform: none; }

/* ============================================================
   命令栏头部
   ============================================================ */
.ig-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(7, 11, 20, .88);
  border-bottom: 1px solid rgba(36, 52, 80, .9);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
}
.ig-header__grain {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .55;
  background-image: repeating-linear-gradient(90deg, rgba(201, 214, 230, .04) 0 1px, transparent 1px 4px);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent);
}
.ig-header__inner {
  position: relative;
  max-width: var(--ig-max);
  margin: 0 auto;
  padding: 10px var(--ig-gutter);
  min-height: var(--ig-header-h);
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 30px);
}

/* 品牌 */
.ig-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  text-decoration: none;
  color: var(--ig-white);
}
.ig-brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px 12px 12px 4px;
  background: linear-gradient(140deg, var(--ig-lime), #8FD417);
  color: var(--ig-ink);
  font-family: var(--ig-font-mono);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .06em;
  transform: skewX(-6deg);
}
.ig-brand__text { display: flex; flex-direction: column; line-height: 1.16; }
.ig-brand__name { font-size: 16px; font-weight: 800; letter-spacing: .07em; color: var(--ig-white); }
.ig-brand__tag { font-size: 11px; letter-spacing: .1em; color: var(--ig-mist); }
.ig-brand--footer .ig-brand__mark { width: 44px; height: 44px; border-radius: 14px 14px 14px 5px; font-size: 15px; }
.ig-brand--footer .ig-brand__name { font-size: 19px; letter-spacing: .08em; }

/* 移动端按钮 */
.ig-nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 9px 14px;
  border: 1px solid var(--ig-steel);
  border-radius: 999px;
  color: var(--ig-silver);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
}
.ig-nav-toggle__bars { display: grid; gap: 3px; width: 16px; }
.ig-nav-toggle__bars span { display: block; height: 2px; background: var(--ig-lime); border-radius: 2px; transition: transform .2s var(--ig-ease), opacity .2s var(--ig-ease); }
.ig-header[data-open="true"] .ig-nav-toggle__bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.ig-header[data-open="true"] .ig-nav-toggle__bars span:nth-child(2) { opacity: 0; }
.ig-header[data-open="true"] .ig-nav-toggle__bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
.ig-nav-toggle__label { line-height: 1; }

/* 导航 */
.ig-nav {
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.4vw, 22px);
  margin-left: auto;
}
.ig-nav__list { display: flex; align-items: center; gap: 2px; }
.ig-nav__item { display: block; }
.ig-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 12px;
  border-radius: 999px;
  color: var(--ig-silver);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .03em;
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ig-ease), background-color .18s var(--ig-ease);
}
.ig-nav__link:hover { color: var(--ig-white); background: rgba(36, 52, 80, .72); }
.ig-nav__link[aria-current="page"] {
  color: var(--ig-white);
  background: rgba(200, 255, 61, .10);
  box-shadow: inset 0 -2px 0 var(--ig-lime);
}
.ig-nav__index {
  font-family: var(--ig-font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--ig-mist);
}
.ig-nav__link[aria-current="page"] .ig-nav__index { color: var(--ig-lime); }
.ig-nav__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-left: clamp(8px, 1.4vw, 18px);
  border-left: 1px solid rgba(36, 52, 80, .95);
}

/* 进度线 */
.ig-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(36, 52, 80, .55);
  pointer-events: none;
}
.ig-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--ig-cyan), var(--ig-lime));
}

/* 头部响应式 */
@media (max-width: 1279px) {
  .ig-brand__tag { display: none; }
}
@media (max-width: 1023px) {
  .ig-nav-toggle { display: inline-flex; }
  .ig-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 8px var(--ig-gutter) 22px;
    background: rgba(9, 14, 24, .985);
    border-bottom: 1px solid var(--ig-steel);
    max-height: calc(100vh - var(--ig-header-h));
    overflow-y: auto;
    box-shadow: 0 26px 44px -30px rgba(0, 0, 0, .95);
  }
  .ig-header[data-open="true"] .ig-nav { display: flex; animation: ig-nav-in .22s var(--ig-ease) both; }
  .ig-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .ig-nav__link {
    padding: 15px 6px;
    border-radius: 0;
    border-bottom: 1px solid rgba(36, 52, 80, .55);
    font-size: 16px;
    justify-content: flex-start;
  }
  .ig-nav__link[aria-current="page"] { box-shadow: inset 3px 0 0 var(--ig-lime); }
  .ig-nav__index { margin-right: 4px; }
  .ig-nav__actions {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 18px 0 0;
    border-left: 0;
    border-top: 1px solid rgba(36, 52, 80, .55);
    margin-top: 8px;
  }
  .ig-nav__actions .ig-btn { width: 100%; padding: 13px 18px; font-size: 15px; }
}
@keyframes ig-nav-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* ============================================================
   页脚
   ============================================================ */
.ig-footer {
  position: relative;
  margin-top: clamp(64px, 10vw, 140px);
  border-top: 1px solid var(--ig-steel);
  background-image:
    radial-gradient(900px 420px at 88% 0%, rgba(200, 255, 61, .07), transparent 72%),
    radial-gradient(700px 380px at 0% 100%, rgba(111, 243, 220, .06), transparent 70%),
    linear-gradient(180deg, rgba(13, 22, 38, .55), rgba(7, 11, 20, .95) 34%);
}
.ig-footer__inner {
  max-width: var(--ig-max);
  margin: 0 auto;
  padding: clamp(40px, 6vw, 76px) var(--ig-gutter) clamp(24px, 3vw, 40px);
  display: grid;
  grid-template-columns: minmax(260px, 1.1fr) 2fr;
  gap: clamp(28px, 4vw, 64px);
}
.ig-footer__brand { display: grid; gap: 16px; align-content: start; }
.ig-footer__note {
  max-width: 32em;
  font-size: 13px;
  line-height: 1.75;
  color: var(--ig-mist);
  padding-left: 12px;
  border-left: 2px solid rgba(200, 255, 61, .45);
}
.ig-footer__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
}
.ig-footer__col-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--ig-mist);
  margin-bottom: 16px;
}
.ig-footer__list { display: grid; gap: 11px; }
.ig-footer__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ig-silver);
  font-size: 14px;
  text-decoration: none;
  transition: color .18s var(--ig-ease);
}
.ig-footer__link::before {
  content: "";
  width: 6px;
  height: 1px;
  background: var(--ig-steel);
  transition: width .18s var(--ig-ease), background-color .18s var(--ig-ease);
}
.ig-footer__link:hover { color: var(--ig-lime); }
.ig-footer__link:hover::before { width: 16px; background: var(--ig-lime); }
.ig-footer__base { border-top: 1px solid rgba(36, 52, 80, .7); }
.ig-footer__base-inner {
  max-width: var(--ig-max);
  margin: 0 auto;
  padding: 18px var(--ig-gutter) 34px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 26px;
}
.ig-footer__legal {
  font-family: var(--ig-font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--ig-mist);
}
@media (max-width: 1023px) {
  .ig-footer__inner { grid-template-columns: 1fr; }
}
@media (max-width: 719px) {
  .ig-footer__cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 419px) {
  .ig-footer__cols { grid-template-columns: 1fr; }
  .ig-footer__base-inner { flex-direction: column; align-items: flex-start; }
}

/* ---------- 移动性偏好 ---------- */
@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.ig-js [data-reveal] { opacity: 1 !important; transform: none !important; }
  .ig-dot--live { animation: none; box-shadow: none; }
  .ig-btn:hover { transform: none; }
}