/* ==========================================================================
   博电竞主站 · 共享站点样式  /assets/site.css
   基调：高原夜赛 · 战术板长卷 · 双层信息导航
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --ink-0: #02070D;
  --ink-1: #061427;
  --ink-2: #0B1F3A;
  --ink-3: #10294D;
  --signal: #35E0E8;
  --lava: #FF6A2B;
  --paper: #F2F6FA;
  --mist: #8FA3B8;
  --flag-red: #D94B3D;
  --flag-yellow: #F2C14E;
  --flag-green: #2F9E62;

  --line: rgba(143, 163, 184, .20);
  --line-soft: rgba(143, 163, 184, .12);
  --line-signal: rgba(53, 224, 232, .36);

  --font-display: "Barlow Condensed", "Oswald", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-body: "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --cut: 16px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

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

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

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1100px 620px at 84% -8%, rgba(53, 224, 232, .10), transparent 62%),
    radial-gradient(880px 520px at 4% 6%, rgba(255, 106, 43, .07), transparent 60%),
    var(--ink-1);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: .005em;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4, h5 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: .006em;
}

h1 { font-size: clamp(36px, 6.6vw, 82px); }
h2 { font-size: clamp(27px, 4vw, 46px); }
h3 { font-size: clamp(20px, 2.3vw, 27px); }

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
dl, dd, dt { margin: 0; }

a {
  color: var(--signal);
  text-decoration: none;
  transition: color .16s var(--ease);
}
a:hover { color: var(--paper); }

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

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

/* ---------- 3. 布局容器与通用工具 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.wrap--narrow {
  width: 100%;
  max-width: 880px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.stack > * + * { margin-top: var(--stack-gap, 14px); }

.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 32px);
}

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

/* ---------- 4. 跳过导航 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 20px;
  background: var(--signal);
  color: var(--ink-0);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transform: translateY(-180%);
  transition: transform .18s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 5. 头部 · 双层信息导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background-color: var(--ink-0);
  background-image:
    linear-gradient(180deg, rgba(11, 31, 58, .94) 0%, rgba(6, 20, 39, .99) 100%),
    repeating-linear-gradient(90deg, rgba(53, 224, 232, .07) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(0deg, rgba(53, 224, 232, .05) 0 1px, transparent 1px 28px);
  border-bottom: 1px solid var(--line-signal);
}

/* 上层状态条 */
.header-meta {
  border-bottom: 1px solid var(--line-soft);
  background: rgba(2, 7, 13, .55);
}

.header-meta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  padding-block: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .09em;
  line-height: 1.5;
}

.header-meta__brand {
  color: var(--paper);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-meta__slash {
  margin-inline: 8px;
  color: var(--signal);
}

.header-meta__status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-self: center;
  color: var(--flag-yellow);
  white-space: nowrap;
}

.header-meta__utility {
  justify-self: end;
  color: var(--mist);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.status-dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lava);
  box-shadow: 0 0 0 3px rgba(255, 106, 43, .20);
}
.status-dot--green { background: var(--flag-green); box-shadow: 0 0 0 3px rgba(47, 158, 98, .20); }
.status-dot--lava { background: var(--lava); box-shadow: 0 0 0 3px rgba(255, 106, 43, .20); }

/* 下层主行 */
.header-main__inner {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.4vw, 32px);
  padding-block: 13px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  color: var(--paper);
}
.brand:hover { color: var(--paper); }

.brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1;
  color: var(--ink-0);
  background: linear-gradient(135deg, var(--signal) 0 54%, var(--lava) 54% 100%);
  clip-path: polygon(0 0, 100% 0, 100% 66%, 66% 100%, 0 100%);
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 1.6vw, 22px);
  letter-spacing: .05em;
  white-space: nowrap;
}

/* 主栏目 */
.primary-nav { min-width: 0; }

.primary-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.5vw, 22px);
}

.primary-nav__item--cta { display: none; }

.primary-nav__link {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  font-size: 14.5px;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--mist);
  transition: color .16s var(--ease);
}

.primary-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 1px;
  height: 2px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .18s var(--ease);
}

.primary-nav__link:hover { color: var(--paper); }
.primary-nav__link:hover::after { transform: scaleX(1); }

.primary-nav__link[aria-current="page"] {
  color: var(--signal);
  font-weight: 600;
}
.primary-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--lava);
}

/* 移动按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 8px 13px;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  border: 1.5px solid var(--line-signal);
  border-radius: 2px;
  transition: border-color .16s var(--ease), color .16s var(--ease);
}
.nav-toggle:hover { border-color: var(--signal); color: var(--signal); }

.nav-toggle__label { line-height: 1; }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
  background: linear-gradient(currentColor, currentColor) center / 18px 2px no-repeat;
  transition: background-size .18s var(--ease);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform .18s var(--ease), top .18s var(--ease), width .18s var(--ease);
}
.nav-toggle__bars::before { top: 1px; }
.nav-toggle__bars::after { top: 9px; width: 12px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background-size: 0 2px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 5px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 5px; width: 18px; transform: rotate(-45deg); }

.header-cta { margin-left: auto; flex: 0 0 auto; }

/* 滚动进度条 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  background: rgba(53, 224, 232, .10);
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--signal) 0%, var(--flag-yellow) 62%, var(--lava) 100%);
  transition: transform .1s linear;
}

/* ---------- 6. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 110px);
  background:
    radial-gradient(760px 320px at 12% 0%, rgba(53, 224, 232, .07), transparent 70%),
    var(--ink-0);
  color: var(--mist);
  border-top: 1px solid var(--line-soft);
}

.footer-stripe {
  height: 4px;
  background: linear-gradient(90deg,
    var(--flag-red) 0 20%,
    var(--flag-yellow) 20% 40%,
    var(--flag-green) 40% 60%,
    var(--signal) 60% 80%,
    var(--lava) 80% 100%);
  opacity: .92;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1.15fr;
  gap: clamp(26px, 4vw, 56px);
  padding-block: clamp(32px, 5vw, 64px) clamp(24px, 3vw, 40px);
}

.footer-brand__summary {
  margin-top: 16px;
  max-width: 30em;
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.footer-brand__note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--flag-green);
}

.footer-title {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: 16px;
}

.footer-nav__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px 20px;
}

.footer-link {
  display: inline-block;
  padding-block: 4px;
  font-size: 14.5px;
  color: var(--mist);
  transition: color .16s var(--ease), transform .16s var(--ease);
}
.footer-link:hover { color: var(--signal); transform: translateX(3px); }

.footer-contact__list { display: grid; gap: 13px; }

.footer-contact__item dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(143, 163, 184, .78);
}

.footer-contact__item dd {
  margin-top: 3px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.footer-contact__hours {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--flag-yellow);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  padding-block: 18px 28px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .07em;
  color: rgba(143, 163, 184, .82);
}

.footer-bottom__legal { color: var(--mist); }

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55em;
  padding: 12px 22px;
  background: var(--signal);
  color: var(--ink-0);
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .1em;
  line-height: 1.2;
  white-space: nowrap;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: transform .16s var(--ease), background-color .16s var(--ease), color .16s var(--ease);
}
.btn:hover {
  color: var(--ink-0);
  background: var(--paper);
  transform: translateY(-2px);
}
.btn:active { transform: translateY(0); }
.btn:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--ink-0), inset 0 0 0 4px rgba(242, 246, 250, .85);
}

.btn--lava { background: var(--lava); color: var(--ink-0); }
.btn--lava:hover { background: var(--flag-yellow); color: var(--ink-0); }

.btn--ghost {
  background: transparent;
  color: var(--signal);
  box-shadow: inset 0 0 0 1.5px var(--line-signal);
}
.btn--ghost:hover {
  background: rgba(53, 224, 232, .12);
  color: var(--signal);
  box-shadow: inset 0 0 0 1.5px var(--signal);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb {
  padding-block: 14px 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--mist);
}
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(143, 163, 184, .48);
}
.breadcrumb a { color: var(--mist); }
.breadcrumb a:hover { color: var(--signal); }
.breadcrumb [aria-current="page"] { color: var(--paper); }

/* ---------- 9. 正文容器 ---------- */
.prose {
  max-width: 64ch;
  font-size: clamp(15.5px, 1.05vw, 17px);
  line-height: 1.85;
  color: rgba(242, 246, 250, .86);
}
.prose > * + * { margin-top: 1.05em; }
.prose h2,
.prose h3 { margin-top: 1.7em; color: var(--paper); }
.prose strong { color: var(--paper); font-weight: 700; }
.prose a {
  color: var(--signal);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* ---------- 10. 章节引导 ---------- */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--signal);
}
.kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--lava);
}

.section-title {
  font-size: clamp(27px, 4vw, 46px);
  letter-spacing: -.005em;
}

.section-lede {
  max-width: 38em;
  font-family: var(--font-serif);
  font-size: clamp(15px, 1.25vw, 18px);
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 11. 面板 / 标签 ---------- */
.panel {
  position: relative;
  padding: clamp(18px, 2.6vw, 30px);
  background: var(--ink-2);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.panel--tactical {
  background-image:
    linear-gradient(155deg, rgba(53, 224, 232, .10), transparent 54%),
    linear-gradient(155deg, var(--ink-3), var(--ink-2));
}

.panel--signal { box-shadow: inset 3px 0 0 var(--signal); }

.issue-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 13px;
  background: var(--lava);
  color: var(--ink-0);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .12em;
  line-height: 1.4;
  clip-path: polygon(8px 0, 100% 0, 100% 100%, 0 100%, 0 8px);
}

/* ---------- 12. 图片容器（页面阶段放置图像） ---------- */
.media {
  position: relative;
  overflow: hidden;
  width: 100%;
  background:
    linear-gradient(135deg, rgba(53, 224, 232, .08), transparent 60%),
    var(--ink-3);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.media > img,
.media > svg,
.media > video,
.media > picture > img {
  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__caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--paper);
  background: linear-gradient(180deg, transparent, rgba(2, 7, 13, .88));
}

.media__stamp {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 3px 9px;
  background: var(--ink-0);
  color: var(--flag-yellow);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  line-height: 1.5;
}

/* ---------- 13. 进入视口显现（渐进增强） ---------- */
[data-reveal].is-reveal-ready {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .42s var(--ease), transform .42s var(--ease);
}
[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- 14. 响应式 ---------- */
@media (max-width: 1080px) {
  .primary-nav__link { font-size: 14px; }
  .header-meta__utility { display: none; }
  .header-meta__inner { grid-template-columns: minmax(0, 1fr) auto; }
}

@media (max-width: 960px) {
  .site-header { position: sticky; }

  .header-meta__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    padding-block: 7px;
    font-size: 10.5px;
  }
  .header-meta__status { justify-self: start; }

  .header-main__inner { flex-wrap: wrap; row-gap: 0; }

  .nav-toggle { display: inline-flex; }
  .header-cta { display: none; }

  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 60;
    display: none;
    max-height: calc(100vh - 92px);
    overflow-y: auto;
    padding: 6px var(--gutter) 22px;
    background:
      linear-gradient(180deg, var(--ink-2) 0%, var(--ink-1) 100%);
    border-top: 1px solid var(--line-signal);
    border-bottom: 3px solid var(--signal);
    box-shadow: 0 24px 48px rgba(2, 7, 13, .62);
  }
  .primary-nav[data-open="true"] { display: block; }

  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .primary-nav__link {
    display: block;
    padding: 13px 4px 13px 14px;
    font-size: 16px;
    border-bottom: 1px solid var(--line-soft);
    box-shadow: inset 2px 0 0 transparent;
  }
  .primary-nav__link::after { display: none; }
  .primary-nav__link:hover { box-shadow: inset 2px 0 0 var(--signal); }
  .primary-nav__link[aria-current="page"] { box-shadow: inset 3px 0 0 var(--lava); }

  .primary-nav__item--cta { display: block; margin-top: 16px; }
  .primary-nav__item--cta .btn { width: 100%; }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(24px, 5vw, 40px);
  }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  body { font-size: 15.5px; }

  .brand__mark { width: 30px; height: 30px; font-size: 16px; }

  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-nav__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-bottom { justify-content: flex-start; }

  .grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

/* ---------- 15. 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  .btn:hover,
  .footer-link:hover { transform: none; }

  [data-reveal].is-reveal-ready {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .scroll-progress__bar { transition: none; }
}