/* ==========================================================================
   安博电竞主站 — 共享样式表 /assets/site.css
   赛道：赛博赛场指挥中心 · 深黑数据底 + 电光青 / 荧光橙 / 结论品红
   ========================================================================== */

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

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

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

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

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

button, input, select, textarea { font: inherit; color: inherit; }

button { background: none; border: 0; cursor: pointer; }

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

table { border-collapse: collapse; }

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩 */
  --ink: #05070A;
  --panel: #0C1116;
  --raise: #141C24;
  --text: #E8F2F6;
  --muted: #93A7B3;
  --cyan: #00E0FF;
  --orange: #FF7A1A;
  --magenta: #FF2D78;
  --mint: #6BF0B0;
  --line: #26333D;

  --cyan-soft: rgba(0, 224, 255, 0.42);
  --orange-soft: rgba(255, 122, 26, 0.42);
  --magenta-soft: rgba(255, 45, 120, 0.45);
  --mint-soft: rgba(107, 240, 176, 0.42);

  /* 字体 */
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system,
    "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace,
    SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
  --font-latin: "Space Grotesk", "Inter", system-ui, -apple-system,
    "Segoe UI", Roboto, sans-serif;

  /* 字号六档 */
  --fs-label: 11px;
  --fs-meta: 13px;
  --fs-body: 17px;
  --fs-sub: 1.8rem;
  --fs-section: 2.6rem;
  --fs-display: clamp(2.6rem, 6vw, 5.6rem);

  /* 尺度 */
  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --header-h: 72px;
  --cut: 18px;
  --radius: 0;
  --shadow-lift: 0 12px 12px -8px rgba(0, 0, 0, 0.72);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100%;
  background-color: var(--ink);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.75;
  font-weight: 400;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 数据底氛围：青色与橙色两处极淡光源，固定不随滚动 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(1100px 560px at 88% -12%, rgba(0, 224, 255, 0.10), transparent 62%),
    radial-gradient(900px 520px at -6% 104%, rgba(255, 122, 26, 0.075), transparent 62%),
    linear-gradient(180deg, rgba(20, 28, 36, 0.35) 0%, transparent 40%);
}

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 { font-size: var(--fs-display); line-height: 1.02; letter-spacing: -0.02em; }
h2 { font-size: var(--fs-section); }
h3 { font-size: var(--fs-sub); }

p { max-width: 68ch; }

strong { font-weight: 700; color: var(--text); }

::selection { background: var(--cyan); color: var(--ink); }

/* 焦点环：全站统一 2px 电光青 */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

main [id] { scroll-margin-top: calc(var(--header-h) + 28px); }

/* ---------- 4. 布局工具 ---------- */
.wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: 0.03em;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}

.col-3  { grid-column: span 3; }
.col-4  { grid-column: span 4; }
.col-5  { grid-column: span 5; }
.col-6  { grid-column: span 6; }
.col-8  { grid-column: span 8; }
.col-12 { grid-column: span 12; }

/* 非对称分屏：左侧吸附对照轴 + 右侧滚动网格 */
.split {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(20px, 3vw, 44px);
  align-items: start;
}

.split__aside {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  align-self: start;
}

.split__main { min-width: 0; }

/* ---------- 5. 区块与色区 ---------- */
.section {
  position: relative;
  z-index: 1;
  padding-block: clamp(40px, 7vw, 88px);
}

.section--panel {
  background: var(--panel);
  border-block: 1px solid var(--line);
}

.section--raise {
  background: var(--raise);
  border-block: 1px solid var(--line);
}

.section--verdict {
  border: 1px solid var(--magenta-soft);
  background: linear-gradient(180deg, rgba(255, 45, 120, 0.07), rgba(5, 7, 10, 0));
}

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 18px;
  margin-bottom: clamp(20px, 3vw, 34px);
  border-bottom: 1px solid var(--line);
}

.section__title {
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  line-height: 1.18;
}

.section__lede {
  color: var(--muted);
  font-size: var(--fs-meta);
  max-width: 52ch;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--cyan);
}

.prose { max-width: 68ch; }
.prose p + p { margin-top: 1.1em; }
.prose a { color: var(--cyan); border-bottom: 1px solid var(--cyan-soft); }
.prose a:hover { border-bottom-color: var(--cyan); }

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--raise);
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease),
    color 0.18s var(--ease), transform 0.18s var(--ease);
}

.btn:hover { border-color: var(--cyan); color: var(--text); }
.btn:active { transform: translateY(1px); }

/* clip-path 会裁掉外描边，故焦点态改用内阴影，保证键盘可见性 */
.btn:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--cyan);
}

.btn--primary {
  background: var(--orange);
  border-color: var(--orange);
  color: #0A0A0A;
  font-weight: 800;
}

.btn--primary:hover {
  background: #FF9040;
  border-color: #FF9040;
}

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

.btn--ghost:hover {
  border-color: var(--cyan);
  background: rgba(0, 224, 255, 0.08);
}

/* ---------- 7. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

.tag--cyan    { color: var(--cyan);    border-color: var(--cyan-soft); }
.tag--orange  { color: var(--orange);  border-color: var(--orange-soft); }
.tag--magenta { color: var(--magenta); border-color: var(--magenta-soft); }
.tag--mint    { color: var(--mint);    border-color: var(--mint-soft); }

/* ---------- 8. 面包屑 ---------- */
.breadcrumb {
  position: relative;
  z-index: 1;
  padding-block: 20px 4px;
  font-size: var(--fs-meta);
}

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

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.breadcrumb__item:not(:last-child)::after {
  content: "/";
  color: #3C4B57;
}

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

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

/* ---------- 9. 图片容器 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)),
    calc(100% - var(--cut)) 100%, 0 100%);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(0, 224, 255, 0.06), transparent 45%);
}

.media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(1.05) contrast(1.04);
}

.media-frame--21x9 { aspect-ratio: 21 / 9; }
.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3  { aspect-ratio: 4 / 3; }
.media-frame--1x1  { aspect-ratio: 1 / 1; }

.media-frame__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 92%;
  padding: 8px 14px;
  background: rgba(5, 7, 10, 0.86);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 10. 模块 A：吸附式对照轴 ---------- */
.axis {
  position: relative;
  padding-left: 24px;
}

.axis::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--line);
}

.axis__item {
  position: relative;
  display: block;
  padding: 10px 0 18px;
  color: inherit;
}

.axis__item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 16px;
  width: 11px;
  height: 11px;
  background: var(--panel);
  border: 1px solid var(--line);
  transform: rotate(45deg);
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}

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

.axis__item.is-active::before {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(0, 224, 255, 0.14);
}

.axis__label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.axis__title {
  display: block;
  margin-top: 2px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  transition: color 0.15s var(--ease);
}

.axis__item:hover .axis__title { color: var(--cyan); }
.axis__item.is-active .axis__title { color: var(--cyan); }

.axis__note {
  display: block;
  margin-top: 4px;
  font-size: var(--fs-meta);
  line-height: 1.6;
  color: var(--muted);
  max-width: 34ch;
}

/* ---------- 11. 模块 B：回放评测卡片 ---------- */
.replay-card {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)),
    calc(100% - var(--cut)) 100%, 0 100%);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease),
    box-shadow 0.18s var(--ease), background-color 0.18s var(--ease);
}

.replay-card:hover,
.replay-card:focus-within {
  border-color: var(--cyan);
  background: var(--raise);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.replay-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.replay-card__title {
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
}

.replay-card__tag { flex: 0 0 auto; }

/* 等宽指标行：BP 矩阵式数据叙事 */
.metric-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 62px;
}

.metric__k {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.metric__v {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

/* 三档结论徽标 */
.verdict {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: var(--fs-meta);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.verdict::before {
  content: "";
  width: 6px;
  height: 6px;
  background: currentColor;
  transform: rotate(45deg);
}

.verdict--a { color: var(--mint);    border-color: var(--mint-soft); }
.verdict--b { color: var(--cyan);    border-color: var(--cyan-soft); }
.verdict--c { color: var(--magenta); border-color: var(--magenta-soft); }

/* ---------- 12. 对照表格 ---------- */
.table-wrap {
  overflow-x: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  min-width: 620px;
  font-size: 15px;
}

.data-table th,
.data-table td {
  padding: 13px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.data-table thead th {
  position: sticky;
  top: 0;
  background: var(--raise);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

.data-table tbody tr {
  transition: background-color 0.15s var(--ease);
}

.data-table tbody tr:hover,
.data-table tbody tr:focus-within {
  background: var(--raise);
}

.data-table tbody tr:last-child td { border-bottom: 0; }

.data-table .is-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
  white-space: nowrap;
}

/* ---------- 13. 手风琴 ---------- */
.accordion { border-top: 1px solid var(--line); }

.accordion__item { border-bottom: 1px solid var(--line); }

.accordion__trigger {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 0 18px 16px;
  border-left: 3px solid transparent;
  text-align: left;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text);
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
}

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

.accordion__item.is-open > .accordion__trigger {
  border-left-color: var(--orange);
  color: var(--text);
}

.accordion__icon {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
}

.accordion__icon::before,
.accordion__icon::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 0.18s var(--ease), opacity 0.18s var(--ease);
}

.accordion__icon::before { left: 0; top: 6px; width: 14px; height: 2px; }
.accordion__icon::after  { left: 6px; top: 0; width: 2px; height: 14px; }

.accordion__item.is-open .accordion__icon::after { opacity: 0; }
.accordion__item.is-open .accordion__icon::before { background: var(--orange); }

.accordion__panel {
  display: none;
  padding: 0 0 22px 16px;
  color: var(--muted);
  font-size: 16px;
}

.accordion__panel p { max-width: 66ch; }

.accordion__item.is-open > .accordion__panel { display: block; }

/* ---------- 14. 显现动效 ---------- */
.reveal-ready [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
}

.reveal-ready [data-reveal].is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.42s var(--ease), transform 0.42s var(--ease);
}

/* ---------- 15. 跳过链接 ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 400;
  padding: 10px 18px;
  background: var(--cyan);
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
  transition: top 0.16s var(--ease);
}

.skip-link:focus { top: 12px; }

/* ---------- 16. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease),
    backdrop-filter 0.18s var(--ease), -webkit-backdrop-filter 0.18s var(--ease);
}

/* 透明叠加态：顶部渐隐，保证首屏文字仍可读 */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(5, 7, 10, 0.88) 0%, rgba(5, 7, 10, 0) 100%);
  opacity: 1;
  transition: opacity 0.18s var(--ease);
  pointer-events: none;
}

.site-header.is-scrolled {
  background: rgba(12, 17, 22, 0.94);
  border-bottom-color: var(--line);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.site-header.is-scrolled::before { opacity: 0; }

.site-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 30px);
  min-height: var(--header-h);
}

/* 品牌 */
.brand {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 12px;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--cyan), #00A8C8);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}

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

.brand__name {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--text);
}

.brand__tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

/* 主导航 */
.nav {
  flex: 1 1 auto;
  min-width: 0;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(6px, 1.4vw, 22px);
}

.nav__item { display: block; }

.nav__link {
  position: relative;
  display: inline-block;
  padding: 8px 2px 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
  transition: color 0.15s var(--ease);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 4px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.18s var(--ease);
}

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

.nav__link[aria-current="page"] { color: var(--cyan); }
.nav__link[aria-current="page"]::after { transform: scaleX(1); }

/* 行动区 */
.site-header__actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  font-size: var(--fs-meta);
  font-weight: 700;
  letter-spacing: 0.06em;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
}

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

.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform 0.18s var(--ease), opacity 0.18s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-toggle:focus-visible { outline: none; box-shadow: inset 0 0 0 2px var(--cyan); }

/* 阅读进度脉冲 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  overflow: hidden;
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.1s linear;
}

/* ---------- 17. 页脚 ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: clamp(48px, 8vw, 96px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink) 0%, #070A0E 62%, var(--ink) 100%);
}

.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.3fr);
  gap: clamp(24px, 4vw, 48px);
  padding-block: clamp(40px, 6vw, 72px);
}

.footer__col { min-width: 0; }

.footer__brand {
  font-size: 1.32rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--text);
}

.footer__lede {
  margin-top: 10px;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.footer__mono {
  margin-top: 16px;
  font-size: var(--fs-label);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer__link {
  display: inline-block;
  font-size: 15px;
  color: #C6D5DD;
  transition: color 0.15s var(--ease), transform 0.15s var(--ease);
}

.footer__link:hover {
  color: var(--cyan);
  transform: translateX(3px);
}

.footer__meta {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.footer__meta-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer__meta-k {
  font-size: var(--fs-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer__meta-v {
  font-size: 14px;
  line-height: 1.6;
  color: #C6D5DD;
  word-break: break-word;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-block: 20px 26px;
  border-top: 1px solid var(--line);
  font-size: var(--fs-meta);
  color: var(--muted);
}

.footer__bottom-item { letter-spacing: 0.04em; }

/* ---------- 18. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 1024px) {
  .split {
    grid-template-columns: minmax(0, 1fr);
  }

  .split__aside {
    position: static;
    top: auto;
  }
}

@media (max-width: 980px) {
  .col-3, .col-4, .col-5 { grid-column: span 6; }
  .col-8 { grid-column: span 12; }
}

/* 移动端导航：展开为吸附面板 */
@media (max-width: 920px) {
  :root { --header-h: 64px; }

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

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    padding: 10px var(--gutter) 22px;
    background: rgba(9, 13, 17, 0.98);
    border-bottom: 1px solid var(--line);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }

  .nav[data-open] { display: block; }

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

  .nav__item { border-bottom: 1px solid var(--line); }

  .nav__link {
    display: block;
    padding: 15px 2px;
    font-size: 16px;
    font-weight: 600;
  }

  .nav__link::after {
    bottom: 8px;
    right: auto;
    width: 26px;
  }

  .brand__tag { display: none; }
}

@media (max-width: 760px) {
  .section__head {
    flex-direction: column;
    align-items: flex-start;
  }

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

@media (max-width: 620px) {
  .col-3, .col-4, .col-5, .col-6 { grid-column: span 12; }

  .grid { gap: 16px; }

  .header-cta {
    padding: 9px 13px;
    font-size: var(--fs-meta);
  }

  .nav-toggle__label { display: none; }

  .nav-toggle { padding: 11px 13px; }

  .replay-card { --cut: 14px; }

  .media-frame { --cut: 14px; }

  .data-table { min-width: 540px; font-size: 14px; }

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

@media (max-width: 400px) {
  .brand__mark { width: 32px; height: 32px; font-size: 12px; }
  .brand__name { font-size: 15px; }
}

/* ---------- 19. 减弱动效 ---------- */
@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;
  }

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

  .replay-card:hover,
  .replay-card:focus-within,
  .footer__link:hover {
    transform: none;
  }

  .scroll-progress__bar { transition: none; }
}