:root {
  --color-surface: #191a1a;
  --color-surface-alt: #2a2b2b;
  --color-surface-deep: #3e4040;
  --color-ink: #d3d9d7;
  --color-ink-soft: #8d9b97;
  --color-ink-muted: #788782;
  --color-line: #3a3c3c;
  --color-primary: #1fe0a5;
  --color-primary-ink: #111816;
  --color-primary-soft: #1a362d;
  --color-accent: #30cf9e;
  --color-accent-ink: #111816;
  --color-highlight: #1d3b32;
  --color-focus: #24dba3;
  --color-contrast-surface: #f0f1f1;
  --color-contrast-ink: #2e3331;
  --color-contrast-line: #c5c7c7;
  --color-contrast-accent: #1d7c5f;
  --overlay-scrim: linear-gradient(180deg, rgba(240, 241, 241, 0.35) 0%, rgba(240, 241, 241, 0.72) 55%, rgba(240, 241, 241, 0.92) 100%);
  --font-heading: ui-monospace, SFMono-Regular, Menlo, Consolas, "PingFang SC", monospace;
  --font-body: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --text-xs: 12.2px;
  --text-sm: 14.6px;
  --text-base: 16px;
  --text-lg: 19.2px;
  --text-xl: 23.0px;
  --text-2xl: 27.6px;
  --text-3xl: 33.2px;
  --text-4xl: 39.8px;
  --text-display: clamp(46px, 9.5vw, 122px);
  --text-figure: clamp(39px, 6.9vw, 88px);
  --weight-heading: 638;
  --weight-body: 400;
  --leading-body: 1.65;
  --leading-heading: 1.18;
  --tracking-heading: 0.015em;
  --radius-sm: 2px;
  --radius-md: 2px;
  --radius-lg: 2px;
  --radius-pill: 2px;
  --border-thin: 1px;
  --border-thick: 1px;
  --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: 1240px;
  --measure: 68ch;
  --gutter: 32px;
  --section-y: 58px;
  --section-y-lg: 81px;
}

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

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

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);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

p { margin: 0; }
ul, ol { margin: 0; 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; padding: 0; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }
table { border-collapse: collapse; width: 100%; }
b, strong { font-weight: var(--weight-heading); }
::selection { background-color: var(--color-primary); color: var(--color-primary-ink); }

/* ============ 基础工具 ============ */
.shell {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

.section { padding-block: var(--section-y); }
.section--lg { padding-block: var(--section-y-lg); }
.section--tight { padding-block: var(--space-4); }

.section--contrast {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}
.section--contrast h1,
.section--contrast h2,
.section--contrast h3,
.section--contrast h4 { color: var(--color-contrast-ink); }
.section--contrast .mono,
.section--contrast .lede { color: color-mix(in srgb, var(--color-contrast-ink) 78%, var(--color-contrast-surface)); }

.mono {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.lede {
  font-size: var(--text-lg);
  line-height: 1.55;
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.rule-dotted {
  border: 0;
  border-top: var(--border-thin) dotted var(--color-line);
  margin: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}
.grid--split { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid--data { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.col-4 { grid-column: span 4; }
.col-6 { grid-column: span 6; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

/* ============ 跳转链接 ============ */
.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -80px;
  z-index: 120;
  padding: var(--space-1) var(--space-3);
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  border-radius: var(--radius-sm);
  transition: top 120ms ease;
}
.skip-link:focus { top: var(--space-2); }

/* ============ 头部 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background-color: var(--color-surface);
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.header-status {
  background-color: var(--color-surface-alt);
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.header-status__inner {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 34px;
  padding-block: 6px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-soft);
  overflow: hidden;
}

.status-brand {
  display: none;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.16em;
  color: var(--color-ink);
  white-space: nowrap;
}

.status-dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-primary);
  animation: status-pulse 2.6s ease-in-out infinite;
}

@keyframes status-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.34; }
}

.status-text {
  color: var(--color-primary);
  font-weight: var(--weight-heading);
  white-space: nowrap;
}

.status-meta {
  color: var(--color-ink-muted);
  white-space: nowrap;
}

.status-watch {
  margin-left: auto;
  white-space: nowrap;
  color: var(--color-ink-muted);
}

.status-watch__num {
  color: var(--color-primary);
  font-weight: var(--weight-heading);
}

.header-main {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding-block: var(--space-3);
}
.header-main::before,
.header-main::after {
  content: "";
  flex: 1 1 auto;
  min-width: var(--space-4);
  border-top: var(--border-thin) dotted var(--color-line);
}

.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
}

.brand__name {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  letter-spacing: 0.26em;
  padding-left: 0.26em;
  color: var(--color-ink);
}

.brand__meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.28em;
  color: var(--color-ink-muted);
}

.site-header[data-scrolled="true"] .header-main { display: none; }
.site-header[data-scrolled="true"] .status-brand { display: inline-block; }
.site-header[data-scrolled="true"] .header-status { background-color: var(--color-surface); }
.site-header[data-scrolled="true"] .header-status__inner { min-height: 30px; }

/* ============ 主导航 ============ */
.site-nav { border-top: var(--border-thin) dotted var(--color-line); }

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
  transition: color 120ms ease;
}
.nav-toggle:hover { color: var(--color-ink); }

.nav-toggle__label { color: inherit; }

.nav-toggle__bars {
  display: block;
  width: 18px;
  height: 9px;
  border-top: var(--border-thin) solid currentColor;
  border-bottom: var(--border-thin) solid currentColor;
}

.nav-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}

.nav-list li { border-left: var(--border-thin) dotted var(--color-line); }
.nav-list li:first-child { border-left: 0; }

.nav-list a {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
  border-bottom: 2px solid transparent;
  transition: color 120ms ease, border-color 120ms ease, background-color 120ms ease;
}
.nav-list a:hover { color: var(--color-ink); }
.nav-list a[aria-current="page"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

[data-nav][data-open="true"] .nav-toggle { color: var(--color-primary); }

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  pointer-events: none;
}
.scroll-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background-color: var(--color-primary);
}

/* ============ 页脚 ============ */
.site-footer {
  border-top: var(--border-thin) dotted var(--color-line);
  background-color: var(--color-surface);
  padding-block: var(--space-3);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

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

.footer-brand__name {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.16em;
  color: var(--color-ink);
}

.footer-copy { color: var(--color-ink-muted); }

.footer-sep { color: var(--color-line); }

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-inline: auto;
}
.footer-links a {
  color: var(--color-ink-soft);
  border-bottom: var(--border-thin) solid transparent;
  transition: color 120ms ease, border-color 120ms ease;
}
.footer-links a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.footer-contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
}
.footer-contact a {
  color: var(--color-ink-soft);
  transition: color 120ms ease;
}
.footer-contact a:hover { color: var(--color-primary); }

.footer-icp { color: var(--color-ink-muted); }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 10px var(--space-3);
  background-color: var(--color-surface-alt);
  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: 0.06em;
  color: var(--color-ink);
  transition: color 120ms ease, background-color 120ms ease, border-color 120ms ease;
}
.btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-weight: var(--weight-heading);
}
.btn--primary:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}
.btn--ghost { background-color: transparent; }
.btn--block {
  display: flex;
  width: 100%;
  justify-content: center;
}

/* ============ 面包屑 ============ */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  padding-block: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}
.breadcrumb a {
  color: var(--color-ink-soft);
  transition: color 120ms ease;
}
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb__sep { color: var(--color-line); }
.breadcrumb [aria-current="page"] { color: var(--color-ink); }

/* ============ 面板与数据行 ============ */
.panel {
  background-color: var(--color-surface-alt);
  border: var(--border-thin) dotted var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}
.panel--flush { padding: 0; overflow: hidden; }

.panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-1) var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) dotted var(--color-line);
}
.panel--flush .panel__head {
  padding: var(--space-2) var(--space-3);
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.panel__title {
  font-size: var(--text-lg);
  font-family: var(--font-heading);
}

.panel__note {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  color: var(--color-ink-muted);
}

.panel__body { padding-top: var(--space-2); }
.panel--flush .panel__body {
  padding: var(--space-2) var(--space-3) var(--space-3);
}

.data-list { display: flex; flex-direction: column; }

.data-row {
  display: grid;
  grid-template-columns: minmax(84px, auto) minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-1) var(--space-2);
  padding: var(--space-1) 0;
  border-bottom: var(--border-thin) dotted var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}
.data-row:last-child { border-bottom: 0; }

.data-row__key {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.data-row__val { color: var(--color-ink); }
.data-row__val--key {
  color: var(--color-primary);
  font-weight: var(--weight-heading);
}

.data-row__meta {
  font-size: var(--text-xs);
  color: var(--color-ink-soft);
}

/* ============ 状态标签 ============ */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  border: var(--border-thin) dotted var(--color-line);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
}
.tag--live {
  color: var(--color-primary);
  border-color: color-mix(in srgb, var(--color-primary) 48%, transparent);
}
.tag--live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-primary);
}
.tag--done { color: var(--color-accent); }
.tag--contrast {
  color: var(--color-contrast-accent);
  border-color: var(--color-contrast-line);
}

/* ============ 区段头 ============ */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-2);
  padding-bottom: var(--space-2);
  margin-bottom: var(--space-4);
  border-bottom: var(--border-thin) dotted var(--color-line);
}
.section--contrast .section-head { border-bottom-color: var(--color-contrast-line); }

.section-head__num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-primary);
}

.section-head__title { font-size: var(--text-2xl); }

.section-head__meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  color: var(--color-ink-muted);
}
.section--contrast .section-head__meta {
  color: color-mix(in srgb, var(--color-contrast-ink) 66%, var(--color-contrast-surface));
}

/* ============ 索引列布局 ============ */
.layout-index {
  display: grid;
  grid-template-columns: 216px minmax(0, 1fr);
  gap: var(--gutter);
  align-items: start;
}

.index-rail {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: var(--space-2);
  border-left: var(--border-thin) dotted var(--color-line);
}

.index-rail__item {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: var(--space-1);
  align-items: baseline;
  padding: 5px 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  color: var(--color-ink-muted);
  transition: color 120ms ease;
}
.index-rail__item:hover { color: var(--color-ink); }
.index-rail__num { color: var(--color-ink-muted); }
.index-rail__item.is-active { color: var(--color-primary); }
.index-rail__item.is-active .index-rail__num { color: var(--color-primary); }

.content-col { min-width: 0; }

/* ============ 长文 ============ */
.prose {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: var(--measure);
  color: var(--color-ink);
}
.prose h2 {
  font-size: var(--text-xl);
  margin-top: var(--space-3);
}
.prose h3 { font-size: var(--text-lg); }
.prose a {
  color: var(--color-accent);
  border-bottom: var(--border-thin) dotted var(--color-accent);
}
.prose ul,
.prose ol {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.prose li {
  position: relative;
  padding-left: var(--space-3);
}
.prose li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-line);
}
.section--contrast .prose { color: var(--color-contrast-ink); }

/* ============ 图片容器 ============ */
.media-frame {
  position: relative;
  overflow: hidden;
  background-color: var(--color-surface-alt);
  border: var(--border-thin) dotted var(--color-line);
  border-radius: var(--radius-md);
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 9;
  filter: grayscale(1) contrast(1.06) brightness(0.82);
}
.media-frame--wide img { aspect-ratio: 16 / 9; }
.media-frame--tall img { aspect-ratio: 3 / 4; }

.media-frame--tint::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--color-primary) 16%, transparent) 0%,
    color-mix(in srgb, var(--color-surface) 74%, transparent) 100%
  );
}

.media-frame__scrim {
  position: absolute;
  inset: auto 0 0 0;
  padding: var(--space-2);
  background: var(--overlay-scrim);
  color: var(--color-contrast-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
}

.media-frame__cap {
  padding: var(--space-1) var(--space-2);
  border-top: var(--border-thin) dotted var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ============ 首屏展示字号（仅首屏） ============ */
.display-title {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 1.02;
  letter-spacing: -0.01em;
  color: var(--color-ink);
}
.section--contrast .display-title { color: var(--color-contrast-ink); }

.figure {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: 700;
  line-height: 1;
  color: var(--color-primary);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat__value {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1.05;
  color: var(--color-primary);
}
.stat__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}
.section--contrast .stat__value { color: var(--color-contrast-accent); }
.section--contrast .stat__label {
  color: color-mix(in srgb, var(--color-contrast-ink) 68%, var(--color-contrast-surface));
}

/* ============ 标签切换 ============ */
.tab-list {
  display: flex;
  flex-wrap: wrap;
  border-bottom: var(--border-thin) dotted var(--color-line);
}
.tab {
  padding: var(--space-1) var(--space-3);
  border-bottom: 2px solid transparent;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
  transition: color 120ms ease, border-color 120ms ease;
}
.tab:hover { color: var(--color-ink); }
.tab.is-active,
.tab[aria-selected="true"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}
.tab-panel {
  display: none;
  padding-top: var(--space-3);
}
.tab-panel.is-active { display: block; }

/* ============ 折叠组 ============ */
.acc { border-top: var(--border-thin) dotted var(--color-line); }
.acc__item { border-bottom: var(--border-thin) dotted var(--color-line); }

.acc__summary {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  color: var(--color-ink);
  cursor: pointer;
  list-style: none;
  transition: color 120ms ease;
}
.acc__summary::-webkit-details-marker { display: none; }
.acc__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  color: var(--color-primary);
}
.acc__item[open] > .acc__summary::after { content: "−"; }
.acc__summary:hover { color: var(--color-primary); }

.acc__body {
  max-width: var(--measure);
  padding-bottom: var(--space-3);
  color: var(--color-ink-soft);
}

/* ============ 焦点与动效偏好 ============ */
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

@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;
  }
  .status-dot { animation: none; opacity: 1; }
}

/* ============ 响应式 ============ */
@media (max-width: 1080px) {
  .layout-index { grid-template-columns: minmax(0, 1fr); }
  .index-rail {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-1) var(--space-3);
    padding: var(--space-1) 0;
    border-left: 0;
    border-top: var(--border-thin) dotted var(--color-line);
    border-bottom: var(--border-thin) dotted var(--color-line);
    margin-bottom: var(--space-3);
  }
  .index-rail__item { grid-template-columns: 20px minmax(0, 1fr); }
  .col-4, .col-6, .col-8 { grid-column: span 6; }
}

@media (max-width: 860px) {
  .header-main::before,
  .header-main::after { display: none; }
  .brand__name { font-size: var(--text-xl); letter-spacing: 0.18em; padding-left: 0.18em; }
  .nav-toggle { display: flex; }
  .nav-list {
    display: none;
    flex-direction: column;
    border-top: var(--border-thin) dotted var(--color-line);
  }
  [data-nav][data-open="true"] .nav-list { display: flex; }
  .nav-list li {
    border-left: 0;
    border-top: var(--border-thin) dotted var(--color-line);
  }
  .nav-list li:first-child { border-top: 0; }
  .nav-list a { padding: var(--space-2) var(--space-3); }
  .nav-list a[aria-current="page"] {
    background-color: var(--color-primary-soft);
    border-bottom-color: transparent;
    border-left: 2px solid var(--color-primary);
  }
  .grid { gap: var(--space-3); }
  .col-4, .col-6, .col-8 { grid-column: span 12; }
  .footer-links { margin-inline: 0; }
}

@media (max-width: 640px) {
  :root { --gutter: 20px; }
  .shell { padding-inline: var(--space-2); }
  .section { padding-block: var(--space-6); }
  .section--lg { padding-block: var(--space-6); }
  .status-meta { display: none; }
  .status-watch { margin-left: auto; }
  .panel { padding: var(--space-2); }
  .data-row { grid-template-columns: minmax(0, 1fr) auto; }
  .data-row__key { grid-column: 1 / -1; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}