/* ============================================================
   哈狗游戏正站 · 共享样式 /assets/site.css
   深夜机房基调 · 印刷边框 · 霓虹状态色
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

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

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

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

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

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

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

hr { border: 0; border-block-start: 1px solid var(--c-line); margin: 0; }

/* ---------- 2. 设计变量 ---------- */
:root {
  color-scheme: dark;

  --c-night: #0B0A1F;
  --c-teal: #0E2A33;
  --c-panel: #141433;
  --c-panel-hi: #1B1B40;
  --c-lime: #C6FF3D;
  --c-amber: #FF9F1C;
  --c-blue: #3DA9FC;
  --c-magenta: #FF3D8B;
  --c-gold: #FFC94D;
  --c-wine: #6E1B3A;
  --c-text: #E8E9F3;
  --c-muted: #9A9CC0;
  --c-line: #2A2A4D;

  --rgb-lime: 198, 255, 61;
  --rgb-amber: 255, 159, 28;
  --rgb-blue: 61, 169, 252;
  --rgb-magenta: 255, 61, 139;
  --rgb-gold: 255, 201, 77;
  --rgb-wine: 110, 27, 58;

  --f-head: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --f-body: var(--f-head);
  --f-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --fs-1: 14px;
  --fs-2: 16px;
  --fs-3: 18px;
  --fs-4: 22px;
  --fs-5: 30px;
  --fs-6: 44px;
  --fs-7: 68px;

  --shell: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --header-h: 104px;

  --ink-shadow: 4px 5px 0 -1px rgba(0, 0, 0, 0.45);
  --ink-shadow-lg: 7px 9px 0 -2px rgba(0, 0, 0, 0.4);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

@media (max-width: 960px) {
  :root { --header-h: 60px; }
}

/* ---------- 3. 基础排版（中文） ---------- */
html {
  scroll-padding-block-start: calc(var(--header-h) + 16px);
}

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

body {
  background-color: var(--c-night);
  color: var(--c-text);
  font-family: var(--f-body);
  font-size: var(--fs-2);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

#main-content {
  display: block;
  padding-block-start: var(--header-h);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--f-head);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.01em;
  overflow-wrap: break-word;
}

p, li, dd, dt { overflow-wrap: break-word; }

strong, b { font-weight: 700; }

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

::selection {
  background: rgba(var(--rgb-lime), 0.85);
  color: #0B0A1F;
}

.mono {
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}

/* ---------- 4. 布局容器与栅格 ---------- */
.container {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.pull-under-header {
  margin-block-start: calc(-1 * var(--header-h));
}

.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 34px);
}

.grid--7-5 { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.grid--5-7 { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
.grid--3-6-3 { grid-template-columns: minmax(0, 3fr) minmax(0, 6fr) minmax(0, 3fr); }
.grid--8-4 { grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); }

@media (max-width: 960px) {
  .grid--7-5,
  .grid--5-7,
  .grid--3-6-3,
  .grid--8-4 { grid-template-columns: minmax(0, 1fr); }
}

.prose {
  max-width: 68ch;
  font-size: var(--fs-2);
  line-height: 1.75;
  color: var(--c-text);
}

.prose > * + * { margin-block-start: 1.05em; }

.prose h2 {
  font-size: var(--fs-5);
  font-weight: 900;
  margin-block-start: 1.6em;
}

.prose h3 {
  font-size: var(--fs-4);
  font-weight: 900;
  margin-block-start: 1.4em;
}

.prose ul,
.prose ol {
  padding-inline-start: 1.3em;
  list-style: none;
}

.prose li + li { margin-block-start: 0.4em; }

.prose li::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-inline: -1.25em 0.7em;
  background: var(--c-lime);
  vertical-align: 0.15em;
}

/* ---------- 5. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: 1px solid var(--c-line);
  border-radius: 2px;
  background: var(--c-panel);
  color: var(--c-text);
  font-size: var(--fs-1);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.04em;
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.45);
  transition: border-color 160ms var(--ease), color 160ms var(--ease),
              background-color 160ms var(--ease), transform 160ms var(--ease),
              box-shadow 160ms var(--ease);
}

.btn:hover {
  border-color: var(--c-lime);
  color: var(--c-lime);
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.5);
}

.btn--primary {
  background: var(--c-lime);
  border-color: var(--c-lime);
  color: #0B0A1F;
}

.btn--primary:hover {
  background: #D6FF70;
  border-color: #D6FF70;
  color: #0B0A1F;
}

.btn--ghost {
  background: transparent;
  box-shadow: none;
}

.btn--ghost:hover {
  background: rgba(var(--rgb-lime), 0.08);
  box-shadow: none;
}

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

/* ---------- 6. 页头 ---------- */
.skip-link {
  position: absolute;
  inset-block-start: 8px;
  inset-inline-start: var(--gutter);
  z-index: 120;
  padding: 10px 16px;
  background: var(--c-lime);
  color: #0B0A1F;
  font-size: var(--fs-1);
  font-weight: 700;
  border-radius: 2px;
  transform: translateY(-190%);
  transition: transform 160ms var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
  outline-offset: 2px;
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  background: linear-gradient(180deg, rgba(11, 10, 31, 0.92) 0%, rgba(11, 10, 31, 0.55) 62%, rgba(11, 10, 31, 0) 100%);
  border-block-end: 1px solid transparent;
  transition: background-color 220ms var(--ease), border-color 220ms var(--ease),
              box-shadow 220ms var(--ease);
}

.site-header[data-scrolled="true"] {
  background-color: rgba(11, 10, 31, 0.97);
  border-block-end-color: var(--c-line);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.55);
}

.header-shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
}

/* 顶部细轨道 */
.header-rail {
  height: 30px;
  overflow: hidden;
  background: rgba(14, 42, 51, 0.6);
  border-block-end: 1px solid var(--c-line);
  transition: height 220ms var(--ease), opacity 200ms var(--ease);
}

.site-header[data-scrolled="true"] .header-rail {
  height: 0;
  opacity: 0;
  border-block-end-color: transparent;
}

.header-shell--rail {
  height: 30px;
  justify-content: space-between;
  gap: 18px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--c-muted);
}

.rail-items {
  display: flex;
  align-items: center;
  gap: 16px;
  white-space: nowrap;
}

.rail-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.rail-item::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--c-lime);
  flex: 0 0 auto;
}

.rail-item:nth-child(2)::before { background: var(--c-blue); }
.rail-item:nth-child(3)::before { background: var(--c-gold); }

.rail-status {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--c-muted);
}

/* 主行 */
.header-main { width: 100%; }

.header-shell--main {
  min-height: 74px;
  justify-content: space-between;
  gap: clamp(12px, 2vw, 34px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--c-lime);
  border-radius: 2px;
  background: rgba(var(--rgb-lime), 0.08);
  color: var(--c-lime);
  font-family: var(--f-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.4);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-size: var(--fs-3);
  font-weight: 900;
  letter-spacing: 0.01em;
}

.brand-tagline {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--c-muted);
  letter-spacing: 0.02em;
}

.brand:hover .brand-name { color: var(--c-lime); }

/* 导航 */
.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 30px);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.7vw, 26px);
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 10px 2px;
  font-size: var(--fs-1);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--c-text);
  transition: color 160ms var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-end: 3px;
  height: 2px;
  background: var(--c-lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 160ms var(--ease);
}

.nav-link:hover,
.nav-link:focus-visible { color: var(--c-lime); }

.nav-link:hover::after,
.nav-link:focus-visible::after { transform: scaleX(1); }

.nav-link[aria-current="page"] {
  color: var(--c-lime);
}

.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-actions {
  display: flex;
  align-items: center;
}

.nav-cta { white-space: nowrap; }

/* 移动端切换按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--c-line);
  border-radius: 2px;
  background: rgba(20, 20, 51, 0.9);
}

.nav-toggle-bars {
  position: relative;
  width: 18px;
  height: 12px;
  flex: 0 0 auto;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  height: 2px;
  background: var(--c-lime);
  transition: transform 160ms var(--ease);
}

.nav-toggle-bars::before { top: 0; }
.nav-toggle-bars::after { bottom: 0; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { transform: translateY(-5px) rotate(-45deg); }

.nav-toggle-label {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

/* 滚动进度线 */
.header-progress {
  position: absolute;
  inset-inline: 0;
  inset-block-end: -1px;
  height: 2px;
  background: rgba(42, 42, 77, 0.7);
  overflow: hidden;
}

.header-progress-fill {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--c-lime), var(--c-blue));
  transition: width 120ms linear;
}

/* ---------- 7. 页头响应式 ---------- */
@media (max-width: 1080px) {
  .brand-tagline { display: none; }
}

@media (max-width: 960px) {
  .header-rail { display: none; }

  .header-shell--main { min-height: 60px; }

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

  .site-nav {
    position: absolute;
    inset-inline: 0;
    inset-block-start: 100%;
    display: block;
    padding: 6px var(--gutter) 22px;
    background: var(--c-panel);
    border-block: 1px solid var(--c-line);
    box-shadow: 0 18px 30px rgba(0, 0, 0, 0.55);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height 240ms var(--ease), opacity 200ms var(--ease),
                visibility 0s linear 240ms;
  }

  .site-nav[data-open="true"] {
    max-height: min(78vh, 620px);
    overflow-y: auto;
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
  }

  .nav-list { display: block; }

  .nav-list li + li { border-block-start: 1px solid var(--c-line); }

  .nav-link {
    display: block;
    padding: 14px 2px;
    font-size: var(--fs-3);
  }

  .nav-link::after { display: none; }

  .nav-actions {
    display: grid;
    margin-block-start: 18px;
  }

  .nav-cta { width: 100%; }
}

/* ---------- 8. 页脚 ---------- */
.site-footer {
  margin-block-start: clamp(48px, 7vw, 100px);
  border-block-start: 1px solid var(--c-line);
  background: linear-gradient(180deg, var(--c-teal) 0%, var(--c-night) 62%);
}

.footer-inner {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(28px, 4vw, 56px) var(--gutter) 0;
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 5fr) minmax(0, 4fr);
  gap: clamp(20px, 3vw, 46px);
}

.footer-brand-name {
  font-size: var(--fs-4);
  font-weight: 900;
  letter-spacing: 0.01em;
}

.footer-brand-tagline {
  margin-block-start: 6px;
  font-family: var(--f-mono);
  font-size: var(--fs-1);
  color: var(--c-muted);
}

.footer-legend-title {
  margin-block-start: 22px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-muted);
  text-transform: uppercase;
}

.footer-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-block-start: 12px;
}

.footer-legend li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--c-muted);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}

.footer-col-title {
  font-family: var(--f-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-muted);
  text-transform: uppercase;
  padding-block-end: 10px;
  margin-block-end: 12px;
  border-block-end: 1px solid var(--c-line);
}

.footer-links li + li { margin-block-start: 8px; }

.footer-links a {
  font-size: var(--fs-1);
  color: var(--c-text);
  border-block-end: 1px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--c-lime);
  border-block-end-color: var(--c-lime);
}

.footer-contact .btn { margin-block-start: 14px; }

.contact-list { margin-block-start: 2px; }

.contact-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 4px 10px;
  padding-block: 9px;
  border-block-end: 1px solid var(--c-line);
  font-size: var(--fs-1);
}

.contact-key {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-muted);
  white-space: nowrap;
}

.contact-value { min-width: 0; overflow-wrap: anywhere; }

.contact-note {
  margin-block-start: 14px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--c-muted);
}

.copy-btn {
  padding: 5px 10px;
  border: 1px solid var(--c-line);
  border-radius: 2px;
  background: rgba(11, 10, 31, 0.55);
  color: var(--c-muted);
  font-size: 12px;
  letter-spacing: 0.04em;
  white-space: nowrap;
  transition: color 160ms var(--ease), border-color 160ms var(--ease),
              background-color 160ms var(--ease);
}

.copy-btn:hover {
  color: var(--c-lime);
  border-color: var(--c-lime);
}

.copy-btn[data-copied="true"] {
  color: var(--c-lime);
  border-color: var(--c-lime);
  background: rgba(var(--rgb-lime), 0.12);
}

.footer-base {
  margin-block-start: clamp(24px, 3vw, 44px);
  border-block-start: 1px solid var(--c-line);
  background: rgba(11, 10, 31, 0.6);
}

.footer-base-inner {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 16px var(--gutter) 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 24px;
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--c-muted);
}

.footer-filing {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-filing .mono { color: var(--c-text); }

.footer-region,
.footer-cadence { color: var(--c-muted); }

.footer-year { margin-inline-start: auto; }

@media (max-width: 1000px) {
  .footer-inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  .footer-inner { grid-template-columns: minmax(0, 1fr); }
  .footer-cols { grid-template-columns: minmax(0, 1fr); }
  .contact-item { grid-template-columns: minmax(0, 1fr) auto; }
  .contact-key { grid-column: 1 / -1; }
  .footer-year { margin-inline-start: 0; }
}

/* ---------- 9. 面包屑 ---------- */
.breadcrumb {
  padding-block: 18px 0;
  font-size: var(--fs-1);
  color: var(--c-muted);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

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

.breadcrumb li + li::before {
  content: "/";
  color: var(--c-line);
  font-family: var(--f-mono);
}

.breadcrumb a { color: var(--c-muted); }
.breadcrumb a:hover { color: var(--c-lime); }

.breadcrumb [aria-current="page"] { color: var(--c-text); }

/* ---------- 10. 纸张卡片 ---------- */
.paper {
  position: relative;
  isolation: isolate;
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  border-radius: 2px;
  padding: clamp(16px, 2.2vw, 26px);
  box-shadow: var(--ink-shadow);
}

.paper--stack::before {
  content: "";
  position: absolute;
  inset-block-start: 9px;
  inset-inline-start: 9px;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: rgba(20, 20, 51, 0.5);
  border: 1px solid var(--c-line);
  border-radius: 2px;
}

.paper--tilt { transform: rotate(-0.6deg); }

.paper--tilt:nth-child(even) { transform: rotate(0.5deg); }

/* ---------- 11. 标签与图例 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  border: 1px solid var(--c-line);
  border-radius: 2px;
  background: rgba(11, 10, 31, 0.6);
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.tag--play { color: var(--c-lime); border-color: rgba(var(--rgb-lime), 0.4); background: rgba(var(--rgb-lime), 0.08); }
.tag--gpu { color: var(--c-amber); border-color: rgba(var(--rgb-amber), 0.42); background: rgba(var(--rgb-amber), 0.08); }
.tag--ram { color: var(--c-blue); border-color: rgba(var(--rgb-blue), 0.42); background: rgba(var(--rgb-blue), 0.08); }
.tag--ssd { color: var(--c-magenta); border-color: rgba(var(--rgb-magenta), 0.42); background: rgba(var(--rgb-magenta), 0.08); }
.tag--gift { color: var(--c-gold); border-color: rgba(var(--rgb-gold), 0.55); background: rgba(var(--rgb-gold), 0.08); }
.tag--archive { color: #F2D8E2; background: var(--c-wine); border-color: #8C2A4E; }

.swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  border-radius: 2px;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.swatch--play { background: var(--c-lime); }
.swatch--gpu { background: var(--c-amber); }
.swatch--ram { background: var(--c-blue); }
.swatch--ssd { background: var(--c-magenta); }
.swatch--gift { background: var(--c-gold); }
.swatch--archive { background: var(--c-wine); }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-1);
  color: var(--c-muted);
  transition: color 160ms var(--ease);
}

.legend-item:hover { color: var(--c-text); }

/* ---------- 12. 筛选 chip ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--c-line);
  border-radius: 2px;
  background: var(--c-panel);
  color: var(--c-text);
  font-size: var(--fs-1);
  letter-spacing: 0.03em;
  transition: border-color 160ms var(--ease), color 160ms var(--ease),
              background-color 160ms var(--ease);
}

.chip:hover { border-color: var(--c-muted); }

.chip[aria-pressed="true"] {
  border-color: var(--c-lime);
  color: var(--c-lime);
  background: rgba(var(--rgb-lime), 0.1);
}

.chip--gpu[aria-pressed="true"] { border-color: var(--c-amber); color: var(--c-amber); background: rgba(var(--rgb-amber), 0.1); }
.chip--ram[aria-pressed="true"] { border-color: var(--c-blue); color: var(--c-blue); background: rgba(var(--rgb-blue), 0.1); }
.chip--ssd[aria-pressed="true"] { border-color: var(--c-magenta); color: var(--c-magenta); background: rgba(var(--rgb-magenta), 0.1); }

.chip-count {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--c-muted);
}

.filtered-out { display: none !important; }

/* ---------- 13. 表格 ---------- */
.data-table {
  font-size: var(--fs-1);
}

.data-table caption {
  text-align: start;
  padding-block-end: 10px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-muted);
  text-transform: uppercase;
}

.data-table th,
.data-table td {
  padding: 9px 12px;
  text-align: start;
  vertical-align: top;
  border-block-end: 1px solid var(--c-line);
}

.data-table thead th {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--c-muted);
  background: rgba(11, 10, 31, 0.55);
}

.data-table tbody tr { transition: background-color 160ms var(--ease); }
.data-table tbody tr:hover { background: rgba(var(--rgb-lime), 0.05); }

.num {
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  text-align: end;
  white-space: nowrap;
}

/* ---------- 14. 横向条带 ---------- */
.strip {
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  padding-block-end: 12px;
}

.strip-track {
  display: flex;
  align-items: stretch;
  gap: clamp(12px, 1.6vw, 20px);
  padding-inline: 2px;
}

.strip-track > * {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.strip::-webkit-scrollbar { height: 8px; }
.strip::-webkit-scrollbar-track { background: var(--c-line); }
.strip::-webkit-scrollbar-thumb { background: var(--c-muted); border-radius: 4px; }

/* ---------- 15. 折叠组 ---------- */
.disclosure {
  border: 1px solid var(--c-line);
  border-radius: 2px;
  background: var(--c-panel);
}

.disclosure + .disclosure { margin-block-start: -1px; }

.disclosure-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  text-align: start;
  font-size: var(--fs-2);
  font-weight: 700;
  transition: color 160ms var(--ease);
}

.disclosure-btn:hover { color: var(--c-lime); }

.disclosure-icon {
  flex: 0 0 auto;
  font-family: var(--f-mono);
  color: var(--c-lime);
  transition: transform 160ms var(--ease);
}

.disclosure-btn[aria-expanded="true"] .disclosure-icon { transform: rotate(45deg); }

.disclosure-panel {
  padding: 0 18px 18px;
  border-block-start: 1px solid var(--c-line);
  font-size: var(--fs-2);
  color: var(--c-muted);
}

.disclosure-panel[hidden] { display: none; }

/* ---------- 16. 章节头 ---------- */
.chapter {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-block-end: 12px;
  margin-block-end: clamp(16px, 2.4vw, 28px);
  border-block-end: 1px solid var(--c-line);
}

.chapter-no {
  font-family: var(--f-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.08em;
  color: var(--c-lime);
  flex: 0 0 auto;
}

.section-title {
  font-size: var(--fs-5);
  font-weight: 900;
  line-height: 1.1;
}

.eyebrow {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-muted);
  text-transform: uppercase;
}

/* ---------- 17. 时间轴基础 ---------- */
.axis {
  --axis-color: var(--c-lime);
  position: relative;
  padding-inline-start: 20px;
  border-inline-start: 1px solid var(--c-line);
}

.axis-item {
  position: relative;
  padding-block: 10px;
}

.axis-item + .axis-item { border-block-start: 1px solid rgba(42, 42, 77, 0.6); }

.axis-item::before {
  content: "";
  position: absolute;
  inset-inline-start: -25px;
  inset-block-start: 17px;
  width: 9px;
  height: 9px;
  background: var(--c-night);
  border: 1px solid var(--axis-color);
}

.axis-item[data-state="live"]::before { background: var(--axis-color); }

.axis-time {
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  color: var(--axis-color);
  letter-spacing: 0.02em;
}

/* ---------- 18. 图片容器基础规则 ---------- */
.figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--c-line);
  border-radius: 2px;
  background: var(--c-teal);
  overflow: hidden;
}

.figure-media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--c-teal) 0%, var(--c-night) 100%);
  overflow: hidden;
}

.figure-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.figure--wide .figure-media { aspect-ratio: 21 / 9; }
.figure--tall .figure-media { aspect-ratio: 4 / 5; }

.figure--angle {
  clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
}

.figure-caption {
  padding: 9px 12px;
  border-block-start: 1px solid var(--c-line);
  font-size: 12px;
  line-height: 1.6;
  color: var(--c-muted);
}

/* ---------- 19. 倒计时 ---------- */
.countdown {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border: 1px solid var(--c-line);
  border-radius: 2px;
  background: rgba(11, 10, 31, 0.7);
}

.countdown-label {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-muted);
}

.countdown-value {
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-3);
  font-weight: 700;
  color: var(--c-lime);
  letter-spacing: 0.02em;
}

.countdown[data-state="past"] .countdown-value { color: var(--c-muted); }

.countdown-toggle {
  padding: 4px 9px;
  border: 1px solid var(--c-line);
  border-radius: 2px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-muted);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.countdown-toggle:hover { color: var(--c-lime); border-color: var(--c-lime); }

/* ---------- 20. 显现动画 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}

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

/* ---------- 21. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .paper--tilt { transform: none; }
  html { scroll-behavior: auto; }
}