:root {
  --color-surface: #f8f7f7;
  --color-surface-alt: #eeeded;
  --color-surface-deep: #e1dfdf;
  --color-ink: #372f32;
  --color-ink-soft: #675b60;
  --color-ink-muted: #83767c;
  --color-line: #d5d3d4;
  --color-primary: #e41669;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #f5d8e3;
  --color-accent: #068463;
  --color-accent-ink: #ffffff;
  --color-highlight: #cce2dc;
  --color-focus: #00805e;
  --color-contrast-surface: #1b0c12;
  --color-contrast-ink: #e7e4e5;
  --color-contrast-line: #483c40;
  --color-contrast-accent: #0bf4b7;
  --overlay-scrim: linear-gradient(180deg, rgba(27, 12, 18, 0.35) 0%, rgba(27, 12, 18, 0.72) 55%, rgba(27, 12, 18, 0.92) 100%);
  --font-heading: "Source Han Sans SC", "Noto Sans SC", SimHei, "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, Menlo, Consolas, monospace;
  --text-xs: 7.8px;
  --text-sm: 12.6px;
  --text-base: 16px;
  --text-lg: 25.9px;
  --text-xl: 41.9px;
  --text-2xl: 67.8px;
  --text-3xl: 109.7px;
  --text-4xl: 177.4px;
  --text-display: clamp(54px, 11.2vw, 143px);
  --text-figure: clamp(45px, 8.0vw, 103px);
  --weight-heading: 831;
  --weight-body: 400;
  --leading-body: 1.72;
  --leading-heading: 1.21;
  --tracking-heading: -0.019em;
  --radius-sm: 2px;
  --radius-md: 2px;
  --radius-lg: 2px;
  --radius-pill: 2px;
  --border-thin: 1px;
  --border-thick: 3px;
  --shadow-1: none;
  --shadow-2: none;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1140px;
  --measure: 66ch;
  --gutter: 24px;
  --section-y: 112px;
  --section-y-lg: 157px;
}

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

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

body {
  margin: 0;
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-body);
  line-height: var(--leading-body);
  word-break: break-word;
}

h1,
h2,
h3,
h4,
h5,
p,
figure,
blockquote {
  margin: 0;
}

h1,
h2,
h3,
h4,
h5 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

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

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

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

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

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

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -120px;
  z-index: 200;
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  border-radius: var(--radius-sm);
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: var(--space-2);
}

/* ============================================================
   2. 容器与栅格
   ============================================================ */
.wrap {
  width: 100%;
  max-width: calc(var(--container) + var(--space-6));
  margin-inline: auto;
  padding-inline: var(--space-3);
}

.grid {
  display: grid;
  gap: var(--space-3);
}

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

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

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid--10 {
  grid-template-columns: repeat(10, minmax(0, 1fr));
}

/* ============================================================
   3. 头部
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background-color: var(--color-surface);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.header-shell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: 84px;
  padding-block: var(--space-2);
}

.brand-cluster {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
  flex: 1 1 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
}

.brand__mark {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1;
  border-radius: var(--radius-sm);
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
  transition: background-color 0.18s ease;
}

.brand:hover .brand__mark {
  background-color: var(--color-accent);
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.15;
  letter-spacing: var(--tracking-heading);
  white-space: nowrap;
}

.brand__line {
  font-size: var(--text-sm);
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.live-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  max-width: 26ch;
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  line-height: 1.4;
  color: var(--color-ink-soft);
}

.status-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: var(--radius-pill);
  animation: status-pulse 2.6s ease-in-out infinite;
}

@keyframes status-pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.28;
  }
}

.nav-cluster {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 0 0 auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-nav__list > li {
  display: flex;
}

.site-nav__list a {
  display: inline-block;
  padding: 6px 0;
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-ink-soft);
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.site-nav__list a:hover {
  color: var(--color-ink);
  border-bottom-color: var(--color-primary);
}

.site-nav__list a[aria-current="page"] {
  color: var(--color-ink);
  font-weight: 600;
  border-bottom-color: var(--color-primary);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  padding: 0 var(--space-3);
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.12em;
  white-space: nowrap;
  border-radius: var(--radius-sm);
  transition: background-color 0.18s ease, color 0.18s ease;
}

.nav-cta:hover {
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-1);
  padding: 10px var(--space-2);
  background-color: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-ink-soft);
  transition: border-color 0.18s ease, color 0.18s ease;
}

.nav-toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.nav-toggle__mark {
  position: relative;
  display: block;
  width: 14px;
  height: 2px;
  background-color: currentColor;
}

.nav-toggle__mark::before,
.nav-toggle__mark::after {
  content: "";
  position: absolute;
  left: 0;
  width: 14px;
  height: 2px;
  background-color: currentColor;
  transition: transform 0.18s ease;
}

.nav-toggle__mark::before {
  top: -5px;
}

.nav-toggle__mark::after {
  top: 5px;
}

[data-nav-toggle][aria-expanded="true"] .nav-toggle__mark {
  background-color: transparent;
}

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

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

.header-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background-color: var(--color-primary);
  pointer-events: none;
}

/* ============================================================
   4. 分区与章节头
   ============================================================ */
.section {
  padding-block: var(--section-y);
}

.section--lg {
  padding-block: var(--section-y-lg);
}

.section--tight {
  padding-block: var(--space-8);
}

.section--alt {
  background-color: var(--color-surface-alt);
}

.section--deep {
  background-color: var(--color-surface-deep);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-2) var(--space-4);
  align-items: end;
  padding-bottom: var(--space-2);
  border-bottom: 2px solid var(--color-primary);
  margin-bottom: var(--space-6);
}

.section-head__text {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background-color: var(--color-accent);
}

.section-title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.lede {
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: 1.5;
  color: var(--color-ink-soft);
}

.note {
  font-size: var(--text-sm);
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
}

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

/* ============================================================
   5. 正文容器
   ============================================================ */
.prose {
  max-width: var(--measure);
}

.prose p {
  margin-bottom: var(--space-3);
}

.prose h2 {
  font-size: var(--text-xl);
  margin-block: var(--space-6) var(--space-2);
}

.prose h3 {
  font-size: var(--text-lg);
  margin-block: var(--space-4) var(--space-1);
}

.prose ul {
  margin-bottom: var(--space-3);
}

.prose li {
  position: relative;
  padding-left: var(--space-3);
  margin-bottom: var(--space-1);
}

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 8px;
  height: 2px;
  background-color: var(--color-primary);
}

.prose a {
  color: var(--color-accent);
  border-bottom: var(--border-thin) solid var(--color-accent);
}

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

.rule-block {
  height: var(--space-1);
  background-color: var(--color-primary);
}

/* ============================================================
   6. 海报层与深底区块
   ============================================================ */
.poster-title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: 0.94;
  letter-spacing: var(--tracking-heading);
  text-transform: uppercase;
}

.stat-figure {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-figure);
  line-height: 0.92;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}

.marker-block {
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  letter-spacing: 0.04em;
  border-radius: var(--radius-sm);
}

.marker-block--accent {
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.marker-block--dark {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.dark-panel {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-radius: var(--radius-sm);
}

.dark-panel .eyebrow {
  color: var(--color-contrast-accent);
}

.dark-panel .eyebrow::before {
  background-color: var(--color-contrast-accent);
}

.dark-panel .note,
.dark-panel__note {
  color: var(--color-contrast-ink);
  opacity: 0.66;
}

.dark-panel a {
  color: var(--color-contrast-ink);
}

/* ============================================================
   7. 资料卡 / 标签 / 状态点 / 方片组
   ============================================================ */
.entry-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  background-color: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.entry-card__title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.25;
  letter-spacing: var(--tracking-heading);
}

.entry-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.entry-card__body {
  font-size: var(--text-base);
  color: var(--color-ink-soft);
}

.entry-card:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.entry-card:hover .entry-card__body,
.entry-card:hover .entry-card__meta {
  color: var(--color-primary-ink);
}

.entry-card:focus-within {
  border-color: var(--color-focus);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-ink-soft);
}

.tag--accent {
  background-color: var(--color-highlight);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.tag--primary {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.state-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border: var(--border-thin) solid currentColor;
  border-radius: var(--radius-pill);
}

.state-dot[data-state="live"] {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}

.state-dot[data-state="pending"] {
  border-color: var(--color-primary);
}

.state-dot[data-state="planned"] {
  border-color: var(--color-ink-muted);
}

.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 6px 14px;
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-ink-soft);
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

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

.chip[aria-pressed="true"] {
  background-color: var(--color-highlight);
  border-color: var(--color-accent);
  color: var(--color-accent);
  font-weight: 600;
}

/* ============================================================
   8. 媒体位
   ============================================================ */
.media-frame {
  position: relative;
  overflow: hidden;
  background-color: var(--color-surface-deep);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.62) contrast(1.06);
}

.media-frame--wide {
  aspect-ratio: 16 / 9;
}

.media-frame--square {
  aspect-ratio: 1 / 1;
}

.media-frame--portrait {
  aspect-ratio: 3 / 4;
}

.media-frame--scrim::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
  pointer-events: none;
}

.media-frame__tag {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  z-index: 2;
  padding: 4px 10px;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
}

.media-frame__body {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: var(--space-3);
  color: var(--color-contrast-ink);
}

.media-frame__body .note {
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

/* ============================================================
   9. 按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-height: 46px;
  padding: 12px var(--space-3);
  background-color: transparent;
  border: var(--border-thin) solid var(--color-ink);
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  color: var(--color-ink);
  text-align: center;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.btn--primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.btn--primary:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.btn--accent {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.btn--accent:hover {
  background-color: var(--color-highlight);
  border-color: var(--color-accent);
  color: var(--color-ink);
}

.btn--ghost {
  border-color: var(--color-line);
  color: var(--color-ink-soft);
}

.btn--ghost:hover {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-ink);
}

.btn--on-dark {
  background-color: transparent;
  border-color: var(--color-contrast-ink);
  color: var(--color-contrast-ink);
}

.btn--on-dark:hover {
  background-color: var(--color-contrast-ink);
  border-color: var(--color-contrast-ink);
  color: var(--color-contrast-surface);
}

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

/* ============================================================
   10. 面包屑
   ============================================================ */
.crumbs {
  padding-block: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
}

.crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
}

.crumbs__list li {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

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

.crumbs__list a {
  color: var(--color-ink-soft);
  border-bottom: var(--border-thin) solid transparent;
}

.crumbs__list a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ============================================================
   11. 页脚：三级阶梯
   ============================================================ */
.site-footer {
  margin-top: var(--space-8);
  border-top: var(--border-thick) solid var(--color-primary);
  background-color: var(--color-surface);
}

.footer-tier-1 {
  position: relative;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.footer-tier-1::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: min(38%, 320px);
  height: var(--space-1);
  background-color: var(--color-primary);
  clip-path: polygon(14% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.footer-band {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
  gap: var(--space-4);
  align-items: end;
  padding-block: var(--space-8);
}

.footer-band__claim {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  max-width: 24ch;
}

.footer-band__sub {
  padding-left: var(--space-2);
  border-left: 2px solid var(--color-contrast-accent);
  font-size: var(--text-sm);
  line-height: 1.7;
  letter-spacing: 0.08em;
  opacity: 0.82;
}

.footer-tier-2 {
  background-color: var(--color-surface-alt);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.footer-index {
  padding-block: var(--space-4);
}

.footer-index::before {
  content: "全站索引";
  display: block;
  margin-bottom: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.footer-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
}

.footer-index__list a {
  display: inline-block;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.footer-index__list a:hover {
  color: var(--color-ink);
  border-bottom-color: var(--color-primary);
}

.footer-tier-3 {
  background-color: var(--color-surface);
  border-top: var(--border-thin) solid var(--color-line);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
  padding-block: var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
}

.footer-legal p {
  margin: 0;
}

/* ============================================================
   12. 响应式
   ============================================================ */
@media (max-width: 1200px) {
  .live-status {
    display: none;
  }
}

@media (max-width: 1024px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-2) var(--space-3) var(--space-3);
    background-color: var(--color-surface);
    border-top: var(--border-thin) solid var(--color-line);
    border-bottom: var(--border-thick) solid var(--color-primary);
  }

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

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

  .site-nav__list a {
    display: block;
    padding: var(--space-2) 0;
    font-size: var(--text-base);
    border-bottom: var(--border-thin) solid var(--color-line);
  }

  .site-nav__list a[aria-current="page"] {
    border-bottom-width: 2px;
    border-bottom-color: var(--color-primary);
  }

  .nav-cta {
    width: 100%;
    height: auto;
    margin-top: var(--space-3);
    padding: 14px var(--space-3);
  }

  .section-title {
    font-size: var(--text-xl);
  }
}

@media (min-width: 721px) and (max-width: 1024px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid--10 {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .section {
    padding-block: var(--space-8);
  }

  .section--lg {
    padding-block: var(--section-y);
  }
}

@media (max-width: 720px) {
  .wrap {
    padding-inline: var(--space-2);
  }

  .header-shell {
    min-height: 68px;
  }

  .brand__mark {
    width: 38px;
    height: 38px;
    font-size: var(--text-base);
  }

  .brand__name {
    font-size: var(--text-base);
  }

  .brand__line {
    display: none;
  }

  .section {
    padding-block: var(--space-8);
  }

  .section--lg {
    padding-block: var(--section-y);
  }

  .section-head {
    grid-template-columns: minmax(0, 1fr);
    margin-bottom: var(--space-4);
  }

  .section-title {
    font-size: var(--text-lg);
  }

  .lede {
    font-size: var(--text-base);
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: minmax(0, 1fr);
  }

  .grid--10 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .entry-card {
    padding: var(--space-2);
  }

  .footer-band {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-3);
    padding-block: var(--space-6);
  }

  .footer-band__claim {
    font-size: var(--text-lg);
  }

  .footer-legal {
    flex-direction: column;
    gap: var(--space-1);
  }
}

@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;
  }
}