/* ============================================================
   安博赛场 · 共享样式 /assets/site.css
   深墨绿夜灯底 + 荧光青数据线 + 琥珀节点 + 粗野主义边框
   ============================================================ */

:root {
  --ink: #08110E;
  --deep: #0B1F1A;
  --panel: #123026;
  --moss: #5C7A6E;
  --cyan: #57F2C6;
  --amber: #F0A93B;
  --paper: #F3F0E6;
  --stone: #C6C0B2;
  --clay: #B46A4C;
  --cyan-soft: #BFF7E6;

  --line: 2px;
  --line-strong: 3px;
  --shadow: 6px 6px 0 var(--ink);
  --shadow-cyan: 6px 6px 0 rgba(87, 242, 198, 0.2);

  --font-sans: "Archivo Narrow", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-data: ui-monospace, "JetBrains Mono", "IBM Plex Mono", Menlo, Consolas,
    "PingFang SC", "Microsoft YaHei", monospace;
  --font-serif: "Source Han Serif SC", "Songti SC", "SimSun", Georgia, serif;

  --ease-out: cubic-bezier(0.16, 0.84, 0.44, 1);
  --shell-w: 1320px;
  --gut: clamp(16px, 4vw, 40px);
  --bar-h: 64px;
}

/* ---------- reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body,
h1, h2, h3, h4, h5,
p, figure, blockquote, dl, dd,
ol, ul { 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%; }

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

/* ---------- 中文排版与全局底色 ---------- */
body {
  background: var(--deep);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-sans);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--paper);
}

h1 { font-size: clamp(32px, 5.4vw, 64px); }
h2 { font-size: clamp(26px, 3.4vw, 40px); }
h3 { font-size: clamp(20px, 2.2vw, 28px); }
h4 { font-size: 18px; font-weight: 700; }

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

/* ---------- 布局骨架 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-w);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.section { padding-block: clamp(48px, 8vw, 120px); }

.section--panel {
  background: var(--panel);
  border-block: var(--line) solid var(--moss);
}

.section--paper {
  background: var(--paper);
  color: #20261E;
  border-block: var(--line-strong) solid var(--ink);
}

.section--paper h1,
.section--paper h2,
.section--paper h3,
.section--paper h4 { color: var(--ink); }

.section--paper .prose { color: #35392F; }

.section--paper .eyebrow { color: #7C4A32; }

.section--paper .stat__value { color: var(--ink); }

.section--paper .stat__label { color: #5C5F55; }

.section--paper .panel {
  background: #FFFFFF;
  border-color: var(--ink);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.section--paper .tag { color: #4A4F45; border-color: #9A9C90; }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(12px, 1.6vw, 24px);
}

.section__head {
  display: grid;
  gap: 12px;
  max-width: 62ch;
  margin-bottom: clamp(24px, 4vw, 48px);
}

.section__title { max-width: 26ch; }

.rule {
  height: var(--line);
  background: var(--moss);
  border: 0;
  opacity: 0.55;
}

/* ---------- 文本构件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: var(--line);
  background: currentColor;
}

.prose {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--stone);
}

.prose > * + * { margin-top: 1.1em; }

.prose a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(87, 242, 198, 0.45);
}

.prose a:hover { border-bottom-color: var(--cyan); }

.prose blockquote {
  font-family: var(--font-serif);
  font-size: clamp(22px, 2.6vw, 32px);
  line-height: 1.45;
  color: var(--paper);
  border-left: var(--line-strong) solid var(--amber);
  padding-left: clamp(16px, 2vw, 28px);
}

.section--paper .prose blockquote { color: var(--ink); }

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

/* ---------- 面板与统计 ---------- */
.panel {
  background: var(--panel);
  border: var(--line) solid var(--moss);
  box-shadow: var(--shadow);
  padding: clamp(16px, 2.4vw, 26px);
}

.stat {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-top: var(--line) solid var(--moss);
}

.stat__value {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--cyan);
}

.stat__label {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--moss);
}

/* ---------- 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid var(--moss);
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--stone);
  white-space: nowrap;
}

.tag--clay { border-color: var(--clay); color: var(--clay); }
.tag--amber { border-color: var(--amber); color: var(--amber); }
.tag--cyan { border-color: var(--cyan); color: var(--cyan); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: var(--line) solid var(--cyan);
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-data);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: transform 0.18s var(--ease-out), box-shadow 0.18s var(--ease-out),
    background-color 0.18s var(--ease-out), color 0.18s var(--ease-out),
    border-color 0.18s var(--ease-out);
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 var(--amber);
}

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

.btn--ghost:hover {
  background: var(--cyan);
  color: var(--ink);
  box-shadow: 4px 4px 0 rgba(240, 169, 59, 0.92);
}

.btn--clay {
  background: var(--clay);
  border-color: var(--clay);
  color: var(--paper);
}

.btn--clay:hover { box-shadow: 4px 4px 0 var(--cyan); }

/* ---------- 图片容器 ---------- */
.figure {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border: var(--line) solid var(--moss);
  background-color: var(--panel);
  background-image:
    linear-gradient(to right, rgba(92, 122, 110, 0.26) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(92, 122, 110, 0.26) 1px, transparent 1px);
  background-size: 48px 48px;
  box-shadow: var(--shadow);
}

.figure--flat { box-shadow: none; }

.figure--paper {
  background-color: var(--paper);
  border-color: var(--ink);
  background-image:
    linear-gradient(to right, rgba(8, 17, 14, 0.09) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(8, 17, 14, 0.09) 1px, transparent 1px);
}

.figure__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 100%;
  padding: 8px 12px;
  background: rgba(8, 17, 14, 0.86);
  border-top: var(--line) solid var(--moss);
  color: var(--stone);
  font-family: var(--font-data);
  font-size: 12px;
  line-height: 1.5;
}

.ratio-16x9 { aspect-ratio: 16 / 9; }
.ratio-4x3 { aspect-ratio: 4 / 3; }
.ratio-3x2 { aspect-ratio: 3 / 2; }
.ratio-1x1 { aspect-ratio: 1 / 1; }

/* ---------- 面包屑 ---------- */
.breadcrumbs {
  padding-block: 14px;
  border-bottom: 1px solid rgba(92, 122, 110, 0.4);
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--moss);
}

.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 6px;
  color: var(--moss);
}

.breadcrumbs__link {
  color: var(--stone);
  transition: color 0.18s var(--ease-out);
}

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

/* ---------- 显现动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.42s var(--ease-out), transform 0.42s var(--ease-out);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* ============================================================
   头部：紧凑命令栏
   ============================================================ */
.skip-link {
  position: absolute;
  left: 12px;
  top: -120px;
  z-index: 120;
  padding: 10px 16px;
  background: var(--cyan);
  color: var(--ink);
  border: var(--line) solid var(--ink);
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  transition: top 0.18s var(--ease-out);
}

.skip-link:focus { top: 10px; }

.cmd-bar {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--deep);
  color: var(--paper);
  border-bottom: var(--line) solid var(--moss);
  box-shadow: 0 3px 0 var(--ink);
}

.cmd-bar__inner {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: clamp(12px, 2vw, 32px);
  width: 100%;
  max-width: var(--shell-w);
  min-height: var(--bar-h);
  margin-inline: auto;
  padding: 8px var(--gut);
}

.cmd-bar__progress {
  position: absolute;
  left: 0;
  bottom: -2px;
  display: block;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.12s linear;
}

/* 品牌 */
.brand-mark { min-width: 0; }

.brand-mark__link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark__glyph {
  position: relative;
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  border: var(--line) solid var(--cyan);
  background: rgba(87, 242, 198, 0.08);
}

.brand-mark__line {
  position: absolute;
  left: 5px;
  right: 5px;
  top: 11px;
  height: 2px;
  background: var(--cyan);
  transform-origin: left center;
}

.brand-mark__line--2 {
  top: 19px;
  right: 14px;
  background: var(--moss);
}

.brand-mark__text {
  display: grid;
  gap: 1px;
  min-width: 0;
}

.brand-mark__name {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--paper);
}

.brand-mark__claim {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--moss);
  white-space: nowrap;
}

/* 导航 */
.cmd-nav { justify-self: center; min-width: 0; }

.cmd-nav__list {
  display: flex;
  align-items: stretch;
  gap: 2px;
}

.cmd-nav__item { display: flex; }

.cmd-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 9px 12px;
  border-bottom: var(--line-strong) solid transparent;
  color: var(--stone);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: color 0.18s var(--ease-out), background-color 0.18s var(--ease-out),
    border-color 0.18s var(--ease-out);
}

.cmd-nav__link:hover {
  color: var(--cyan);
  background: rgba(87, 242, 198, 0.07);
}

.cmd-nav__link[aria-current="page"] {
  color: var(--cyan);
  background: rgba(87, 242, 198, 0.1);
  border-bottom-color: var(--amber);
}

.cmd-nav__idx {
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--moss);
}

.cmd-nav__link[aria-current="page"] .cmd-nav__idx { color: var(--amber); }

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border: var(--line) solid var(--moss);
  color: var(--cyan);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 18px;
}

.nav-toggle__bars i {
  display: block;
  height: 2px;
  background: var(--cyan);
  transition: width 0.18s var(--ease-out), background-color 0.18s var(--ease-out);
}

.nav-toggle__bars i:nth-child(2) {
  width: 68%;
  background: var(--moss);
}

.nav-toggle[aria-expanded="true"] {
  border-color: var(--amber);
  color: var(--amber);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars i { background: var(--amber); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { width: 100%; }

.cmd-bar__action { justify-self: end; }

/* ============================================================
   页脚
   ============================================================ */
.site-foot {
  background: var(--ink);
  color: var(--stone);
  border-top: var(--line-strong) solid var(--moss);
}

.site-foot__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.3fr 1fr;
  gap: clamp(24px, 3vw, 48px);
  width: 100%;
  max-width: var(--shell-w);
  margin-inline: auto;
  padding: clamp(40px, 6vw, 72px) var(--gut) clamp(28px, 4vw, 48px);
}

.site-foot__brand { display: grid; gap: 10px; align-content: start; }

.site-foot__wordmark {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--paper);
}

.site-foot__tagline {
  max-width: 30ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--stone);
}

.site-foot__host {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.foot-col {
  display: grid;
  gap: 14px;
  align-content: start;
  min-width: 0;
}

.foot-col__title {
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--moss);
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(92, 122, 110, 0.4);
}

.foot-nav__list,
.foot-legal__list {
  display: grid;
  gap: 9px;
}

.foot-nav__link,
.foot-legal__link {
  display: inline-block;
  font-size: 14px;
  color: var(--stone);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease-out), border-color 0.18s var(--ease-out);
}

.foot-nav__link:hover,
.foot-legal__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.foot-contact__list {
  display: grid;
  gap: 9px;
}

.foot-contact__item {
  display: grid;
  gap: 2px;
}

.foot-contact__key {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--moss);
}

.foot-contact__value {
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.foot-contact__note {
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--moss);
}

.site-foot__base {
  border-top: 1px solid rgba(92, 122, 110, 0.4);
}

.site-foot__base-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  max-width: var(--shell-w);
  margin-inline: auto;
  padding: 18px var(--gut);
}

.site-foot__fine {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--moss);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .cmd-nav__link { padding: 9px 9px; font-size: 13px; }
  .brand-mark__claim { display: none; }
  .site-foot__inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 960px) {
  .cmd-bar__inner {
    grid-template-columns: 1fr auto;
    row-gap: 0;
    padding-block: 10px;
  }

  .nav-toggle { display: inline-flex; }

  .cmd-nav {
    grid-column: 1 / -1;
    justify-self: stretch;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.28s var(--ease-out);
  }

  .cmd-nav[data-open] {
    max-height: 72vh;
    overflow-y: auto;
  }

  .cmd-nav__list {
    flex-direction: column;
    gap: 0;
    margin-top: 10px;
    padding-top: 6px;
    border-top: var(--line) solid var(--moss);
  }

  .cmd-nav__item { display: block; }

  .cmd-nav__link {
    width: 100%;
    justify-content: space-between;
    align-items: center;
    padding: 13px 4px;
    border-bottom: 1px solid rgba(92, 122, 110, 0.32);
    border-left: var(--line-strong) solid transparent;
    font-size: 15px;
  }

  .cmd-nav__link[aria-current="page"] {
    border-bottom-color: rgba(92, 122, 110, 0.32);
    border-left-color: var(--amber);
    background: rgba(87, 242, 198, 0.09);
  }

  .cmd-bar__action { display: none; }
}

@media (max-width: 640px) {
  .site-foot__inner { grid-template-columns: 1fr; }
  .site-foot__base-inner { flex-direction: column; align-items: flex-start; }
  .brand-mark__name { font-size: 16px; letter-spacing: 0.1em; }
  .brand-mark__glyph { width: 30px; height: 30px; }
  .brand-mark__line { top: 9px; }
  .brand-mark__line--2 { top: 16px; }
}

/* ============================================================
   动效降级
   ============================================================ */
@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;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}