/* =========================================================
   site.css —— 天天电竞共享外壳
   暗夜电竞底色 + 侧边轨道导航 + 粗野主义硬边组件
   ========================================================= */

*, *::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, figure, blockquote, dl, dd { margin: 0; }
ul[class], ol[class] { list-style: none; padding: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img, svg { display: block; max-width: 100%; }
table { border-collapse: collapse; width: 100%; }

:root {
  /* —— 色彩体系 —— */
  --ink: #070A14;
  --panel: #0E1424;
  --deck: #161E33;
  --cyan: #22F0E4;
  --pulse: #A855F7;
  --amber: #FF7A1A;
  --paper: #F2F5FF;
  --mute: #9AA6BF;
  --line: #2A3550;
  --gain: #B6FF3C;

  /* —— 结构与节奏 —— */
  --rail: 236px;
  --gutter: clamp(18px, 4.2vw, 52px);
  --stack: clamp(20px, 3vw, 34px);
  --edge: 3px solid var(--line);
  --hard: 7px 7px 0 rgba(42, 53, 80, .62);

  /* —— 字号阶梯 —— */
  --fs-12: .75rem;
  --fs-14: .875rem;
  --fs-17: 1.0625rem;
  --fs-22: 1.375rem;
  --fs-34: 2.125rem;
  --fs-56: 3.5rem;
  --fs-88: 5.5rem;

  /* —— 字体 —— */
  --font-display: "HarmonyOS Sans SC", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "PingFang SC", "HarmonyOS Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --ease: cubic-bezier(.2, .7, .2, 1);
}

@media (min-width: 1200px) { :root { --rail: 252px; } }
@media (max-width: 1023px) { :root { --rail: 0px; } }

/* —— 基础 —— */
html, body { min-height: 100%; }

body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: var(--fs-17);
  line-height: 1.65;
  letter-spacing: -.01em;
  padding-left: var(--rail);
  overflow-x: hidden;
  font-variant-numeric: tabular-nums;
}

/* 网格坐标底纹，仅作背景层，不干扰文字 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(34, 240, 228, .045) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(168, 85, 247, .04) 0 1px, transparent 1px 72px);
  opacity: .7;
}

main { position: relative; z-index: 1; padding-inline: var(--gutter); }

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

/* =========================================================
   头部 · 左缘侧边轨道
   ========================================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail);
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #0B1222 0%, #070A14 58%, #05080F 100%);
  border-right: var(--edge);
  z-index: 60;
}

.site-header::after {
  content: "";
  position: absolute;
  top: 0;
  right: -3px;
  width: 3px;
  height: 62%;
  background: linear-gradient(180deg, var(--cyan), var(--pulse) 62%, transparent);
  opacity: .85;
  pointer-events: none;
}

/* 跳转链接 */
.skip-link {
  position: absolute;
  top: -72px;
  left: 10px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--cyan);
  color: #04121A;
  font-size: var(--fs-14);
  font-weight: 700;
  border: 2px solid #04121A;
  transition: top .18s var(--ease);
}
.skip-link:focus { top: 10px; }

/* 阅读进度 */
.scroll-meter {
  position: fixed;
  top: 0;
  left: var(--rail);
  right: 0;
  height: 3px;
  z-index: 120;
  background: rgba(42, 53, 80, .45);
  pointer-events: none;
}
.scroll-meter__fill {
  display: block;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--pulse) 68%, var(--amber));
}

/* 品牌 */
.sh-brand {
  position: relative;
  display: block;
  flex: 0 0 auto;
  padding: 26px 20px 20px;
  border-bottom: 1px solid var(--line);
}
.sh-brand::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background: linear-gradient(180deg, var(--cyan), var(--pulse));
}
.sh-brand__mark {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.55rem;
  line-height: 1;
  letter-spacing: -.055em;
  transform: skewX(-6deg);
  text-shadow: 3px 3px 0 rgba(34, 240, 228, .22);
}
.sh-brand__mark-accent { color: var(--cyan); }
.sh-brand__domain {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .015em;
  color: var(--mute);
  word-break: break-all;
}

/* 抽屉按钮（桌面隐藏） */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border: 2px solid var(--cyan);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .14em;
  clip-path: polygon(0 0, 100% 0, 100% 74%, 86% 100%, 0 100%);
  transition: background .18s var(--ease), color .18s var(--ease);
}
.nav-toggle__bars { display: inline-flex; flex-direction: column; gap: 3px; width: 16px; }
.nav-toggle__bars i { display: block; height: 2px; background: currentColor; }
.nav-toggle__bars i:nth-child(2) { width: 68%; }
.nav-toggle[aria-expanded="true"] { background: var(--cyan); color: #04121A; }

/* 导航轨道 */
.site-nav {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  padding: 10px 0 8px;
  counter-reset: nav;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 20px;
  border-bottom: 1px solid rgba(42, 53, 80, .55);
  color: var(--mute);
  font-size: .9375rem;
  letter-spacing: -.012em;
  transition: background .18s var(--ease), color .18s var(--ease), padding-left .18s var(--ease);
}
.nav-link::before {
  counter-increment: nav;
  content: counter(nav, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .06em;
  color: var(--line);
  transition: color .18s var(--ease);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent 72%);
  opacity: 0;
  transition: opacity .18s var(--ease);
}
.nav-link:hover {
  color: var(--paper);
  background: var(--deck);
  padding-left: 26px;
}
.nav-link:hover::before { color: var(--cyan); }
.nav-link:hover::after { opacity: 1; }
.nav-link[aria-current="page"] {
  background: var(--cyan);
  color: #04121A;
  font-weight: 700;
  padding-left: 26px;
}
.nav-link[aria-current="page"]::before { color: rgba(4, 18, 26, .55); }
.nav-link[aria-current="page"]::after { opacity: 0; }

/* 抽屉遮罩 */
.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 75;
  display: none;
  background: rgba(4, 7, 14, .78);
  opacity: 0;
  pointer-events: none;
  transition: opacity .22s var(--ease);
}
.site-nav[data-open] + .nav-scrim { opacity: 1; pointer-events: auto; }

/* 公告走势条 */
.sh-ticker {
  flex: 0 0 auto;
  border-top: 2px solid var(--amber);
  background: #0A0E19;
  padding: 12px 0;
  overflow: hidden;
}
.sh-ticker__label {
  display: block;
  padding: 0 20px 8px;
  font-family: var(--font-mono);
  font-size: .625rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--amber);
}
.sh-ticker__viewport { overflow: hidden; }
.sh-ticker__track {
  display: flex;
  width: max-content;
  animation: ticker-scroll 26s linear infinite;
}
.sh-ticker:hover .sh-ticker__track,
.sh-ticker:focus-within .sh-ticker__track { animation-play-state: paused; }
.sh-ticker__item {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding-right: 30px;
  font-size: .75rem;
  color: var(--mute);
  white-space: nowrap;
  transition: color .18s var(--ease);
}
.sh-ticker__item::before {
  content: "▲";
  font-size: .5rem;
  color: var(--amber);
}
.sh-ticker__item:hover { color: var(--paper); }

@keyframes ticker-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* =========================================================
   页脚 · 三段式
   ========================================================= */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: clamp(56px, 8vw, 118px);
  background: #05070F;
  border-top: var(--edge);
  padding: 0 var(--gutter);
  color: var(--mute);
}
.site-footer::before {
  content: "";
  display: block;
  height: 10px;
  margin: 0 calc(var(--gutter) * -1);
  background: repeating-linear-gradient(
    118deg,
    var(--cyan) 0 34px,
    transparent 34px 62px,
    var(--pulse) 62px 96px,
    transparent 96px 126px
  );
  opacity: .72;
}

.foot-inner {
  width: 100%;
  max-width: 1320px;
  margin-inline: auto;
}

.foot-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px 40px;
  padding: clamp(30px, 4vw, 46px) 0 clamp(22px, 3vw, 32px);
  border-bottom: 1px solid var(--line);
}
.foot-brand { display: inline-flex; flex-direction: column; gap: 8px; }
.foot-brand__mark {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  line-height: 1;
  letter-spacing: -.055em;
  transform: skewX(-6deg);
  color: var(--paper);
  text-shadow: 4px 4px 0 rgba(168, 85, 247, .3);
}
.foot-brand__mark-accent { color: var(--cyan); }
.foot-brand__domain {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .02em;
  color: var(--mute);
}
.foot-motto {
  max-width: 42ch;
  font-size: .9375rem;
  line-height: 1.6;
  color: var(--mute);
  padding-left: 14px;
  border-left: 2px solid var(--line);
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr 1fr;
  gap: clamp(26px, 4vw, 58px);
  padding: clamp(28px, 4vw, 46px) 0;
  border-bottom: 1px solid var(--line);
}

.foot-title {
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 16px;
}

.foot-links { display: grid; gap: 0; }
.foot-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid rgba(42, 53, 80, .5);
  font-size: .9375rem;
  color: var(--mute);
  transition: color .18s var(--ease), padding-left .18s var(--ease);
}
.foot-links a::after {
  content: "↗";
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--line);
  transition: color .18s var(--ease);
}
.foot-links a:hover { color: var(--paper); padding-left: 6px; }
.foot-links a:hover::after { color: var(--cyan); }

.foot-contact { display: grid; gap: 14px; }
.foot-contact__row { display: grid; gap: 3px; }
.foot-contact dt {
  font-family: var(--font-mono);
  font-size: .625rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: #5D6C8C;
}
.foot-contact dd {
  font-size: .9375rem;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
}
.foot-note {
  margin-top: 16px;
  padding-left: 12px;
  border-left: 2px solid var(--amber);
  font-size: .8125rem;
  line-height: 1.6;
  color: var(--mute);
}

.foot-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  padding: 22px 0 36px;
  font-size: .8125rem;
  color: #5D6C8C;
}
.foot-copy { font-size: .8125rem; }
.foot-legal { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.foot-legal a {
  color: var(--mute);
  padding-bottom: 1px;
  border-bottom: 1px solid var(--line);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.foot-legal a:hover { color: var(--cyan); border-color: var(--cyan); }
.foot-icp {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .02em;
  color: #5D6C8C;
}

/* =========================================================
   通用排版与容器
   ========================================================= */
.wrap { width: 100%; max-width: 1320px; margin-inline: auto; }
.section { padding: clamp(44px, 6vw, 88px) 0; }
.stack > * + * { margin-top: var(--stack); }

.display {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: .94;
  letter-spacing: -.045em;
  color: var(--paper);
  text-wrap: balance;
}
.display--slant { display: inline-block; transform: skewX(-6deg); }

.numeric {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
}

.rule-slant {
  height: 3px;
  border: 0;
  background: linear-gradient(90deg, var(--cyan), var(--pulse) 55%, var(--amber));
}

/* 面包屑 */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 22px 0 0;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #5D6C8C;
}
.crumbs a { color: var(--mute); transition: color .18s var(--ease); }
.crumbs a:hover { color: var(--cyan); }
.crumbs__sep { color: var(--line); }
.crumbs [aria-current] { color: var(--cyan); }

/* 网格 */
.grid { display: grid; gap: var(--stack); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* 卡片 */
.card {
  position: relative;
  background: var(--panel);
  border: 2px solid var(--line);
  padding: clamp(18px, 2.4vw, 28px);
  box-shadow: var(--hard);
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s var(--ease);
}
.card--deck { background: var(--deck); }
.card:hover { transform: translateY(-4px); box-shadow: 10px 10px 0 rgba(42, 53, 80, .8); }
.card:focus-within { border-color: var(--cyan); }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  border: 2px solid var(--cyan);
  background: var(--cyan);
  color: #04121A;
  font-size: .9375rem;
  font-weight: 700;
  letter-spacing: -.01em;
  box-shadow: 6px 6px 0 rgba(168, 85, 247, .45);
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease), color .18s var(--ease);
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 9px 9px 0 rgba(168, 85, 247, .62); }
.btn:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0 rgba(168, 85, 247, .5); }
.btn--ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--line);
  box-shadow: 6px 6px 0 rgba(42, 53, 80, .9);
}
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); box-shadow: 9px 9px 0 rgba(34, 240, 228, .28); }

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .08em;
  color: var(--cyan);
}
.tag--pulse { color: var(--pulse); }
.tag--amber { color: var(--amber); }
.tag--gain { color: var(--gain); }

/* 图片容器基础规则（页面阶段在此放入占位图） */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, #101A2E 0%, #0A0F1B 62%, #0D1524 100%);
  border: 2px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}
.media img { width: 100%; height: 100%; object-fit: cover; }
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(158deg, rgba(34, 240, 228, .14), transparent 46%, rgba(168, 85, 247, .16));
}
.media--portrait { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }

/* =========================================================
   响应式
   ========================================================= */
@media (max-width: 1023px) {
  body { padding-left: 0; }

  .site-header {
    position: sticky;
    inset: auto;
    top: 0;
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "brand toggle"
      "ticker ticker";
    width: 100%;
    height: auto;
    border-right: 0;
    border-bottom: var(--edge);
    background: rgba(7, 10, 20, .97);
    z-index: 90;
  }
  .site-header::after { display: none; }

  .sh-brand {
    grid-area: brand;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 14px;
    padding: 13px var(--gutter);
    border-bottom: 0;
  }
  .sh-brand::before { width: 4px; }
  .sh-brand__domain { margin-top: 0; font-size: .625rem; }

  .nav-toggle { grid-area: toggle; display: inline-flex; margin: 12px var(--gutter) 12px 0; align-self: center; }

  .sh-ticker { grid-area: ticker; padding: 9px 0; }
  .sh-ticker__label { padding: 0 var(--gutter) 6px; }

  .nav-scrim { display: block; }

  .site-nav {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(86vw, 340px);
    flex: none;
    padding: 84px 0 26px;
    background: linear-gradient(180deg, #0B1222 0%, #070A14 100%);
    border-right: 3px solid var(--cyan);
    box-shadow: 14px 0 0 rgba(34, 240, 228, .1);
    transform: translateX(-103%);
    transition: transform .22s var(--ease);
    z-index: 80;
  }
  .site-nav[data-open] { transform: translateX(0); }
  .nav-link { padding: 15px 22px; font-size: 1rem; }

  body.nav-open { overflow: hidden; }

  .foot-grid { grid-template-columns: 1fr; }
  .foot-head { align-items: flex-start; }
}

@media (max-width: 900px) {
  .grid--2, .grid--3 { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  body { font-size: 1rem; }
  .foot-bottom { justify-content: flex-start; gap: 10px 20px; }
  .foot-legal { order: 3; }
  .display { letter-spacing: -.035em; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .sh-ticker__track { animation: none; }
  .card:hover { transform: none; }
  .btn:hover, .btn:active { transform: none; }
  .scroll-meter__fill { transition: none; }
}