/* =========================================================
   亿百电竞主站 · 共享样式 /assets/site.css
   轨道 + 连续画布 · 深夜赛事指挥中心
   ========================================================= */

/* ---------- 1. 变量 ---------- */
:root {
  --ink: #060912;
  --indigo: #151B4A;
  --teal: #06302E;
  --wine: #3B1026;
  --cyan: #3BF2E2;
  --violet: #8B5CF6;
  --orange: #FF6B35;
  --paper: #E8F1FF;
  --muted: #93A2C2;
  --hair: #232E4D;
  --ok: #3DD68C;

  --rail-w: 252px;
  --bar-h: 62px;
  --shell-max: 1180px;

  --r-lg: 26px;
  --r-md: 14px;
  --r-sm: 10px;

  --dur: 200ms;
  --ease: cubic-bezier(0.22, 0.72, 0.28, 1);

  --font-head: "HarmonyOS Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", "Cascadia Mono", Consolas, "Liberation Mono", monospace;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--bar-h) + 18px);
}

body,
h1, h2, h3, h4, h5, h6,
p, ol, ul, li, figure, blockquote, dl, dd {
  margin: 0;
}

ol, ul { padding: 0; list-style: none; }

img, svg, video { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

table { border-collapse: collapse; width: 100%; }

/* ---------- 3. 中文排版基线 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--paper);
  background-color: var(--ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--paper);
  text-wrap: balance;
}

h1 { font-size: clamp(30px, 4.4vw, 44px); }
h2 { font-size: clamp(24px, 3vw, 34px); }
h3 { font-size: clamp(19px, 2.1vw, 24px); }
h4 { font-size: 18px; font-weight: 700; letter-spacing: -0.01em; }

p { text-wrap: pretty; }

strong, b { font-weight: 700; }

::selection {
  background: rgba(59, 242, 226, 0.28);
  color: #FFFFFF;
}

/* ---------- 4. 全局焦点 ---------- */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 4px;
}

#main-content { scroll-margin-top: calc(var(--bar-h) + 20px); }

/* ---------- 5. 布局骨架 ---------- */
@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }
  html { scroll-padding-top: 28px; }
  #main-content { scroll-margin-top: 28px; }
}

.wrap {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 52px);
}

/* ---------- 6. 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 300;
  padding: 11px 20px;
  border-radius: var(--r-sm);
  background: var(--cyan);
  color: #04121A;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  transform: translateY(-180%);
  transition: transform var(--dur) var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 7. 头部：侧边轨道 ---------- */
.rail {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--rail-w);
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 28px 20px 22px;
  overflow: hidden;
  background:
    linear-gradient(178deg, #121940 0%, var(--indigo) 44%, #090D24 100%);
  border-right: 1px solid var(--hair);
}

.rail::before {
  content: "";
  position: absolute;
  inset: -70px -70px auto -70px;
  height: 280px;
  background: radial-gradient(58% 62% at 34% 42%, rgba(139, 92, 246, 0.38), transparent 72%);
  pointer-events: none;
}

.rail__brand {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 9px;
}

.rail__logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.rail__mark {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  border-radius: 13px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #04121A;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  box-shadow:
    0 0 0 1px rgba(59, 242, 226, 0.4),
    0 14px 30px -16px rgba(59, 242, 226, 0.95);
}

.rail__name {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.rail__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--muted);
  padding-left: 54px;
}

/* 移动端汉堡按钮 */
.rail__toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 13px;
  border: 1px solid var(--hair);
  border-radius: var(--r-sm);
  font-size: 14px;
  font-weight: 600;
  color: var(--paper);
  background: rgba(21, 27, 74, 0.5);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.rail__toggle:hover { border-color: var(--cyan); color: var(--cyan); }

.rail__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
}

.rail__bars i {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.rail__bars i:nth-child(1) { top: 0; }
.rail__bars i:nth-child(2) { top: 5px; }
.rail__bars i:nth-child(3) { top: 10px; }

.rail__toggle-label { line-height: 1; }

.rail[data-open] .rail__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.rail[data-open] .rail__bars i:nth-child(2) { opacity: 0; }
.rail[data-open] .rail__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* 面板 */
.rail__panel {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1 1 auto;
  min-height: 0;
}

/* 导航 */
.rail__nav {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.rail__nav-title {
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

.rail__list { display: grid; gap: 2px; }

.rail__item { display: block; }

.rail__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 12px 11px 17px;
  border-radius: var(--r-sm);
  font-size: 15.5px;
  font-weight: 600;
  color: var(--muted);
  transition:
    color var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.rail__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 3px;
  height: 0;
  border-radius: 3px;
  background: var(--cyan);
  box-shadow: 0 0 12px rgba(59, 242, 226, 0.85);
  transform: translateY(-50%);
  transition: height var(--dur) var(--ease);
}

.rail__link:hover {
  color: var(--paper);
  background: rgba(59, 242, 226, 0.08);
  transform: translateX(2px);
}

.rail__link:hover::before { height: 15px; }

.rail__link[aria-current="page"] {
  color: var(--paper);
  background: linear-gradient(90deg, rgba(59, 242, 226, 0.18), rgba(139, 92, 246, 0.06));
}

.rail__link[aria-current="page"]::before { height: 22px; }

.rail__idx {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}

.rail__link:hover .rail__idx,
.rail__link[aria-current="page"] .rail__idx { color: var(--cyan); }

.rail__label { min-width: 0; }

/* 工具区 */
.rail__util {
  position: relative;
  display: grid;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--hair);
}

.rail__season {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.rail__dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 10px rgba(255, 107, 53, 0.85);
}

.rail__cta { font-size: 14px; }

/* 遮罩 */
.rail__scrim {
  position: fixed;
  inset: 0;
  z-index: 85;
  background: rgba(6, 9, 18, 0.76);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease);
}

.rail[data-open] .rail__scrim {
  opacity: 1;
  pointer-events: auto;
}

/* 阅读进度 */
.rail__progress {
  position: absolute;
  top: 0;
  right: 0;
  width: 2px;
  height: var(--rail-progress, 0%);
  z-index: 4;
  background: linear-gradient(180deg, var(--cyan), var(--violet));
  pointer-events: none;
}

/* ---------- 8. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.4;
  text-align: center;
  transition:
    transform var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.btn:hover { transform: translateY(-2px); }

.btn--primary {
  background: var(--cyan);
  color: #04121A;
}

.btn--primary:hover {
  box-shadow: 0 14px 34px -16px rgba(59, 242, 226, 0.95);
}

.btn--violet {
  background: var(--violet);
  color: #0A0620;
}

.btn--violet:hover {
  box-shadow: 0 14px 34px -16px rgba(139, 92, 246, 0.95);
}

.btn--ghost {
  border-color: var(--hair);
  background: rgba(21, 27, 74, 0.4);
  color: var(--paper);
}

.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn--block { width: 100%; }

/* ---------- 9. 排版工具 ---------- */
.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.muted { color: var(--muted); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 16px;
  height: 2px;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(59, 242, 226, 0.8);
}

/* ---------- 10. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border: 1px solid var(--hair);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: var(--muted);
  background: rgba(21, 27, 74, 0.28);
  transition:
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.tag:hover { border-color: var(--cyan); color: var(--paper); }

.tag[data-active],
.tag[aria-pressed="true"] {
  border-color: var(--violet);
  color: var(--paper);
  background: rgba(139, 92, 246, 0.16);
}

/* ---------- 11. 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.crumbs li { display: inline-flex; align-items: center; gap: 8px; }

.crumbs li + li::before {
  content: "/";
  color: var(--hair);
}

.crumbs a { color: var(--muted); transition: color var(--dur) var(--ease); }
.crumbs a:hover { color: var(--cyan); }
.crumbs [aria-current="page"] { color: var(--paper); }

/* ---------- 12. 分区与网格 ---------- */
.panel {
  border-radius: var(--r-lg);
  padding: clamp(20px, 3vw, 30px);
  background: linear-gradient(160deg, rgba(21, 27, 74, 0.88), rgba(6, 9, 18, 0.6));
}

.panel--teal {
  background: linear-gradient(160deg, rgba(6, 48, 46, 0.9), rgba(6, 9, 18, 0.55));
}

.panel--wine {
  background: linear-gradient(160deg, rgba(59, 16, 38, 0.92), rgba(6, 9, 18, 0.55));
}

.split {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}

.split--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.split--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.split--asym { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }

/* ---------- 13. 图片容器基础 ---------- */
.media {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, var(--indigo), #05070F 72%);
}

.media > img,
.media > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 42%, rgba(6, 9, 18, 0.78));
  pointer-events: none;
}

.media--tall { aspect-ratio: 3 / 4; }
.media--wide { aspect-ratio: 21 / 9; }
.media--square { aspect-ratio: 1 / 1; }

.media--cut {
  border-radius: 0;
  clip-path: polygon(0 0, 100% 4%, 100% 100%, 0 96%);
}

.media__label {
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.09em;
  color: var(--cyan);
}

/* ---------- 14. 页脚 ---------- */
.foot {
  position: relative;
  margin-top: clamp(56px, 9vw, 108px);
  padding: clamp(40px, 6vw, 72px) clamp(18px, 4vw, 52px) 26px;
  border-top: 1px solid var(--hair);
  background:
    radial-gradient(120% 96% at 88% 0%, rgba(59, 242, 226, 0.1), transparent 58%),
    radial-gradient(90% 90% at 6% 100%, rgba(59, 16, 38, 0.55), transparent 62%),
    linear-gradient(180deg, #0A0F2C, var(--ink) 82%);
}

.foot::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 46%, var(--orange));
}

.foot__grid {
  max-width: var(--shell-max);
  margin-inline: auto;
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  grid-template-columns: minmax(220px, 1.35fr) repeat(3, minmax(0, 1fr));
}

.foot__brand {
  display: grid;
  gap: 12px;
  align-content: start;
}

.foot__mark {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.foot__domain {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.foot__desc {
  max-width: 34ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.foot__col { display: block; }

.foot__title {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper);
}

.foot__title::before {
  content: "";
  width: 14px;
  height: 2px;
  background: var(--orange);
}

.foot__col ul { display: grid; gap: 10px; }

.foot__col a {
  font-size: 15px;
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}

.foot__col a:hover { color: var(--cyan); }

.foot__contact {
  max-width: var(--shell-max);
  margin: clamp(30px, 4vw, 48px) auto 0;
  padding-top: clamp(22px, 3vw, 32px);
  border-top: 1px solid var(--hair);
  display: grid;
  gap: 12px 34px;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.foot__contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  font-size: 14px;
  color: var(--muted);
}

.foot__contact-row span {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--violet);
}

.foot__contact-row b {
  font-weight: 500;
  color: var(--paper);
}

.foot__base {
  max-width: var(--shell-max);
  margin: clamp(26px, 3.6vw, 40px) auto 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 26px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 15. 平板 / 手机 ---------- */
@media (max-width: 1023.98px) {
  body { padding-left: 0; }

  .rail {
    position: sticky;
    inset: auto;
    top: 0;
    width: 100%;
    height: var(--bar-h);
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 0 16px;
    border-right: 0;
    border-bottom: 1px solid var(--hair);
    background: linear-gradient(90deg, rgba(19, 26, 69, 0.96), rgba(10, 14, 38, 0.96) 72%);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    overflow: visible;
  }

  .rail::before { display: none; }

  .rail__brand {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .rail__logo { gap: 10px; }

  .rail__mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    font-size: 11px;
  }

  .rail__name {
    font-size: 15.5px;
    white-space: nowrap;
  }

  .rail__tag { display: none; }

  .rail__toggle { display: inline-flex; }

  .rail__panel {
    position: fixed;
    top: var(--bar-h);
    right: 0;
    bottom: 0;
    z-index: 88;
    width: min(86vw, 340px);
    padding: 20px 18px 34px;
    gap: 20px;
    overflow-y: auto;
    overscroll-behavior: contain;
    border-left: 1px solid var(--hair);
    background: linear-gradient(180deg, #131A45, var(--ink) 72%);
    transform: translateX(102%);
    transition: transform 240ms var(--ease);
    box-shadow: -24px 0 60px -30px rgba(0, 0, 0, 0.9);
  }

  .rail[data-open] .rail__panel { transform: translateX(0); }

  .rail__nav {
    flex: 0 0 auto;
    overflow: visible;
  }

  .rail__link { font-size: 16px; padding: 13px 12px 13px 17px; }

  .rail__util { padding-top: 18px; }

  .rail__scrim { top: var(--bar-h); }

  .rail__progress {
    top: auto;
    bottom: 0;
    left: 0;
    right: auto;
    width: var(--rail-progress, 0%);
    height: 2px;
    background: linear-gradient(90deg, var(--cyan), var(--violet));
  }
}

@media (max-width: 900px) {
  .split--asym { grid-template-columns: minmax(0, 1fr); }

  .foot__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .foot__brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  .split--2,
  .split--3 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 560px) {
  body { font-size: 16px; }

  .foot__grid { grid-template-columns: minmax(0, 1fr); }

  .foot__base { flex-direction: column; align-items: flex-start; }

  .btn { padding: 11px 18px; }
}

/* ---------- 16. 减少动态效果 ---------- */
@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;
    transition-delay: 0ms !important;
  }
}