:root {
  --color-surface: #f9f9f9;
  --color-surface-alt: #f0f0f0;
  --color-surface-deep: #e5e3e4;
  --color-ink: #4f454b;
  --color-ink-soft: #776a72;
  --color-ink-muted: #867981;
  --color-line: #dad9da;
  --color-primary: #dd1d92;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #f5daeb;
  --color-accent: #448604;
  --color-accent-ink: #ffffff;
  --color-highlight: #d8e4cd;
  --color-focus: #3f8000;
  --color-contrast-surface: #180c14;
  --color-contrast-ink: #e7e4e6;
  --color-contrast-line: #463c42;
  --color-contrast-accent: #7ff807;
  --overlay-scrim: linear-gradient(180deg, rgba(24, 12, 20, 0.35) 0%, rgba(24, 12, 20, 0.72) 55%, rgba(24, 12, 20, 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: 12.9px;
  --text-sm: 16.1px;
  --text-base: 18px;
  --text-lg: 22.5px;
  --text-xl: 28.1px;
  --text-2xl: 35.2px;
  --text-3xl: 43.9px;
  --text-4xl: 54.9px;
  --text-display: clamp(49px, 10.1vw, 129px);
  --text-figure: clamp(41px, 7.3vw, 93px);
  --weight-heading: 860;
  --weight-body: 400;
  --leading-body: 1.75;
  --leading-heading: 1.3;
  --tracking-heading: -0.005em;
  --radius-sm: 11px;
  --radius-md: 13px;
  --radius-lg: 15px;
  --radius-pill: 999px;
  --border-thin: 2px;
  --border-thick: 3px;
  --shadow-1: 0 1px 0 rgba(79, 69, 75, 0.12);
  --shadow-2: 0 2px 0 rgba(79, 69, 75, 0.18);
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1140px;
  --measure: 74ch;
  --gutter: 32px;
  --section-y: 74px;
  --section-y-lg: 104px;
}

/* ============ 01 reset & base ============ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-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);
  overflow-x: clip;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: var(--color-primary); text-decoration: none; text-underline-offset: 0.22em; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: inherit;
}
p { margin: 0 0 var(--space-3); }
ul, ol { margin: 0 0 var(--space-3); padding-left: 1.15em; }
li { margin-block: 2px; }
button { font: inherit; color: inherit; }
hr { border: 0; }
:focus-visible { outline: var(--border-thick) solid var(--color-focus); outline-offset: 3px; border-radius: 4px; }
.site-header :focus-visible,
.site-footer :focus-visible,
.section--deep :focus-visible { outline-color: var(--color-contrast-accent); }
::selection { background: var(--color-primary); color: var(--color-primary-ink); }
#main-content:focus { outline: none; }

/* ============ 02 layout ============ */
.shell {
  width: 100%;
  max-width: calc(var(--container) + var(--space-3) * 2);
  margin-inline: auto;
  padding-inline: var(--space-3);
}
.section {
  position: relative;
  padding-block: var(--section-y);
  background-color: var(--color-surface);
  color: var(--color-ink);
}
.section--lg { padding-block: var(--section-y-lg); }
.section--alt { background-color: var(--color-surface-alt); }
.section--soft { background-color: var(--color-primary-soft); }
.section--highlight { background-color: var(--color-highlight); }
.section--deep {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}
.section--deep h1, .section--deep h2, .section--deep h3, .section--deep h4 { color: var(--color-contrast-ink); }
.section--deep a { color: var(--color-contrast-accent); }
.section--deep p { color: color-mix(in srgb, var(--color-contrast-ink) 86%, transparent); }
.grid-9 {
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  gap: var(--gutter);
}
.span-1 { grid-column: span 1; }
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.rule-dashed { border-top: var(--border-thin) dashed var(--color-line); margin-block: var(--space-6); }
.rule-dotted { border-top: var(--border-thin) dotted var(--color-line); margin-block: var(--space-4); }
.section--deep .rule-dashed, .section--deep .rule-dotted { border-top-color: var(--color-contrast-line); }

/* ============ 03 排版组件 ============ */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}
.kicker::before {
  content: "";
  width: 24px;
  height: var(--border-thick);
  background-color: currentColor;
  border-radius: var(--radius-pill);
}
.section--deep .kicker { color: var(--color-contrast-accent); }
.lede {
  font-size: var(--text-lg);
  line-height: 1.55;
  color: var(--color-ink-soft);
  max-width: 42ch;
  margin-bottom: var(--space-3);
}
.section--deep .lede { color: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent); }
.display-title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: 0.92;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-3);
}
.figure-title {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-figure);
  line-height: 1;
  letter-spacing: -0.03em;
  margin: 0;
}
.title-xl { font-size: var(--text-2xl); margin-bottom: var(--space-2); }
.title-lg { font-size: var(--text-xl); margin-bottom: var(--space-2); }
.prose { max-width: var(--measure); }
.prose p:last-child { margin-bottom: 0; }
.note {
  margin: 0;
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-surface-deep);
  border-left: var(--border-thick) solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}
.section--deep .note {
  background-color: color-mix(in srgb, var(--color-contrast-ink) 8%, transparent);
  border-left-color: var(--color-contrast-accent);
  color: color-mix(in srgb, var(--color-contrast-ink) 84%, transparent);
}

/* ============ 04 标签 / 按钮 / 徽标 ============ */
.tag {
  display: inline-block;
  padding: 3px 10px;
  border: var(--border-thin) solid var(--color-accent);
  border-radius: var(--radius-pill);
  background-color: var(--color-highlight);
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.5;
}
.tag--primary {
  border-color: var(--color-primary);
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
}
.tag--accent {
  border-color: var(--color-accent);
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}
.section--deep .tag {
  border-color: var(--color-contrast-accent);
  background-color: transparent;
  color: var(--color-contrast-accent);
}
.section--deep .tag--primary {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 12px 22px;
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  box-shadow: var(--shadow-1);
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}
.btn:hover { text-decoration: none; box-shadow: var(--shadow-2); transform: translateY(-2px); }
.btn--primary { background-color: var(--color-primary); color: var(--color-primary-ink); }
.btn--primary:hover { background-color: color-mix(in srgb, var(--color-primary) 84%, var(--color-ink)); }
.btn--outline { background-color: transparent; color: var(--color-ink); border-color: var(--color-ink); }
.btn--outline:hover { background-color: var(--color-highlight); border-color: var(--color-accent); color: var(--color-accent); }
.btn--accent { background-color: var(--color-accent); color: var(--color-accent-ink); }
.section--deep .btn--outline { color: var(--color-contrast-accent); border-color: var(--color-contrast-accent); }
.section--deep .btn--outline:hover { background-color: color-mix(in srgb, var(--color-contrast-accent) 18%, transparent); }

/* ============ 05 数据带 / 索引 / 图块 ============ */
.data-band {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-3);
  padding-block: var(--space-3);
  border-top: var(--border-thin) dashed var(--color-line);
  border-bottom: var(--border-thin) dashed var(--color-line);
}
.section--deep .data-band { border-color: var(--color-contrast-line); }
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-3xl);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-accent);
}
.section--deep .stat-value { color: var(--color-contrast-accent); }
.stat-label {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}
.section--deep .stat-label { color: color-mix(in srgb, var(--color-contrast-ink) 66%, transparent); }
.index-list { list-style: none; margin: 0; padding: 0; counter-reset: idx; }
.index-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: baseline;
  padding-block: var(--space-3);
  border-bottom: var(--border-thin) dashed var(--color-line);
}
.index-item::before {
  counter-increment: idx;
  content: counter(idx, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
}
.section--deep .index-item { border-bottom-color: var(--color-contrast-line); }
.section--deep .index-item::before { color: var(--color-contrast-accent); }
.index-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  margin: 0;
}
.index-meta { font-size: var(--text-xs); letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-ink-muted); }
.section--deep .index-meta { color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent); }
.tile {
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface-alt);
  border-left: var(--border-thick) solid var(--color-accent);
}
.section--alt .tile { background-color: var(--color-surface); }
.section--deep .tile {
  background-color: color-mix(in srgb, var(--color-contrast-ink) 7%, transparent);
  border-left-color: var(--color-contrast-accent);
}

/* ============ 06 图片容器 ============ */
.figure { margin: 0; }
.figure-media {
  position: relative;
  overflow: hidden;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface-deep);
  aspect-ratio: 16 / 10;
}
.section--deep .figure-media { border-color: var(--color-contrast-line); background-color: color-mix(in srgb, var(--color-contrast-ink) 10%, transparent); }
.figure-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.06) brightness(0.94);
}
.figure--portrait .figure-media { aspect-ratio: 4 / 5; }
.figure--wide .figure-media { aspect-ratio: 21 / 9; }
.figure--square .figure-media { aspect-ratio: 1 / 1; }
.figure-scrim { position: absolute; inset: 0; background: var(--overlay-scrim); pointer-events: none; }
.figure-overlay {
  position: absolute;
  inset-inline: var(--space-3);
  bottom: var(--space-3);
  color: var(--color-contrast-ink);
  z-index: 1;
}
.figure-overlay .tag { background-color: var(--color-contrast-accent); border-color: var(--color-contrast-accent); color: var(--color-contrast-surface); }
.figure-caption {
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}
.section--deep .figure-caption { color: color-mix(in srgb, var(--color-contrast-ink) 68%, transparent); }

/* ============ 07 面包屑 ============ */
.breadcrumb { padding-block: var(--space-3) 0; }
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.breadcrumb-list li { display: inline-flex; align-items: center; gap: var(--space-2); margin: 0; }
.breadcrumb-list li + li::before { content: "›"; color: var(--color-primary); font-size: var(--text-sm); }
.breadcrumb-list a { color: var(--color-ink-soft); }
.breadcrumb-list a:hover { color: var(--color-primary); }

/* ============ 08 标签页 / 筛选 ============ */
.tabs { margin-block: var(--space-3); }
.tab-list {
  display: flex;
  gap: var(--space-1);
  overflow-x: auto;
  padding-bottom: var(--space-1);
  border-bottom: var(--border-thin) dashed var(--color-line);
  scrollbar-width: thin;
}
.tab-btn {
  flex: 0 0 auto;
  padding: 8px 14px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  background-color: transparent;
  color: var(--color-ink-soft);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.tab-btn:hover { border-color: var(--color-accent); color: var(--color-accent); }
.tab-btn[aria-selected="true"] {
  background-color: var(--color-highlight);
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.tab-panel { padding-top: var(--space-3); }
.tab-panel[hidden] { display: none; }

/* ============ 09 装饰形状 ============ */
.shard { position: absolute; pointer-events: none; z-index: 0; }
.shard--dots {
  width: 96px;
  height: 40px;
  inset-inline-end: 7%;
  top: 10px;
  opacity: 0.45;
  background-image: radial-gradient(var(--color-contrast-accent) 2px, transparent 2px);
  background-size: 12px 12px;
}
.shard--wedge {
  width: 108px;
  height: 42px;
  left: 26%;
  bottom: -20px;
  opacity: 0.85;
  background-color: var(--color-primary);
  clip-path: polygon(0 100%, 28% 0, 100% 0, 72% 100%);
}
.shard--slash {
  width: 104px;
  height: 58px;
  right: 4%;
  top: 26px;
  opacity: 0.5;
  background-image: repeating-linear-gradient(115deg, var(--color-contrast-accent) 0 4px, transparent 4px 13px);
}
.shard--ring {
  width: 52px;
  height: 52px;
  left: 2%;
  bottom: 28px;
  border: var(--border-thick) solid var(--color-primary);
  border-radius: 50%;
  opacity: 0.8;
}

/* ============ 10 头部 ============ */
.skip-link {
  position: absolute;
  left: var(--space-3);
  top: -88px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-heading);
  font-weight: 700;
  text-decoration: none;
  transition: top 0.2s ease;
}
.skip-link:focus { top: var(--space-2); text-decoration: none; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-bottom: var(--border-thick) solid var(--color-primary);
}
.header-shell {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 68px;
  padding-block: 12px;
}
.brand-block { display: flex; flex-direction: column; gap: 2px; flex: 0 0 auto; }
.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  letter-spacing: 0.01em;
  color: var(--color-contrast-ink);
  text-decoration: none;
}
.brand-mark::before {
  content: "";
  width: 13px;
  height: 13px;
  background-color: var(--color-contrast-accent);
  border-radius: 3px 50% 3px 50%;
}
.brand-mark:hover { text-decoration: none; color: var(--color-contrast-accent); }
.brand-tagline {
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-contrast-ink) 60%, transparent);
}
.site-nav { flex: 1 1 auto; display: flex; justify-content: center; }
.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: navidx;
}
.nav-item { margin: 0; }
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-contrast-ink);
  text-decoration: none;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.nav-link::before {
  counter-increment: navidx;
  content: counter(navidx, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-contrast-accent);
  opacity: 0.75;
}
.nav-link:hover {
  background-color: color-mix(in srgb, var(--color-primary) 24%, transparent);
  border-color: var(--color-primary);
  text-decoration: none;
}
.nav-link[aria-current="page"] {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
  box-shadow: var(--shadow-2);
}
.nav-link[aria-current="page"]::before { color: var(--color-primary-ink); opacity: 1; }
.header-aside { display: flex; align-items: center; gap: var(--space-2); flex: 0 0 auto; }
.header-chip {
  padding: 4px 10px;
  border: var(--border-thin) dashed var(--color-contrast-accent);
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}
.header-call {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-primary);
  padding-bottom: 1px;
}
.header-call:hover { color: var(--color-contrast-accent); border-bottom-color: var(--color-contrast-accent); text-decoration: none; }
.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-1);
  margin-left: auto;
  padding: 8px 12px;
  background-color: transparent;
  color: var(--color-contrast-ink);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transition: background-color 0.18s ease, border-color 0.18s ease;
}
.nav-toggle[aria-expanded="true"] { background-color: var(--color-primary); border-color: var(--color-primary); color: var(--color-primary-ink); }
.nav-toggle-bars { position: relative; display: inline-block; width: 18px; height: var(--border-thin); background-color: currentColor; }
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: var(--border-thin);
  background-color: currentColor;
}
.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 6px; }
.nav-toggle-text { display: inline-block; }
.nav-scrim { display: none; }
.scroll-meter {
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: var(--border-thick);
  background-color: color-mix(in srgb, var(--color-contrast-ink) 12%, transparent);
}
.scroll-meter-bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background-color: var(--color-contrast-accent);
}

/* ============ 11 页脚 ============ */
.site-footer {
  position: relative;
  overflow: clip;
  padding-block: var(--section-y) var(--space-4);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  line-height: 1.7;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: var(--border-thick);
  background-image: linear-gradient(90deg,
    var(--color-primary) 0%,
    var(--color-primary) 34%,
    var(--color-contrast-accent) 34%,
    var(--color-contrast-accent) 62%,
    var(--color-accent) 62%,
    var(--color-accent) 100%);
}
.footer-shell { position: relative; z-index: 1; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: var(--space-4) var(--space-3);
  align-items: start;
  padding-top: var(--space-3);
}
.footer-brand {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  color: var(--color-contrast-ink);
  text-decoration: none;
}
.footer-brand:hover { color: var(--color-contrast-accent); text-decoration: none; }
.footer-note {
  margin: var(--space-2) 0 0;
  max-width: 34ch;
  color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent);
}
.footer-update {
  margin: var(--space-2) 0 0;
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-contrast-accent);
}
.footer-group-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.footer-list { display: grid; gap: var(--space-1); margin: 0; padding: 0; list-style: none; }
.footer-list li { margin: 0; }
.footer-list a {
  color: var(--color-contrast-ink);
  border-bottom: var(--border-thin) dashed transparent;
  padding-bottom: 2px;
}
.footer-list a:hover { color: var(--color-contrast-accent); border-bottom-color: var(--color-contrast-accent); text-decoration: none; }
.footer-contact-list { display: grid; gap: var(--space-2); margin: 0; padding: 0; list-style: none; }
.footer-contact-list li { margin: 0; }
.footer-label {
  display: block;
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-contrast-ink) 55%, transparent);
}
.footer-value { display: block; color: var(--color-contrast-ink); word-break: break-word; }
.footer-value--mono { font-family: var(--font-mono); font-size: var(--text-sm); }
.site-footer .rule-dashed { border-top-color: var(--color-contrast-line); margin-block: var(--space-4) var(--space-3); }
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2) var(--space-3);
}
.footer-copy {
  margin: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}
.legal-list { display: flex; flex-wrap: wrap; gap: var(--space-3); margin: 0; padding: 0; list-style: none; }
.legal-list li { margin: 0; }
.legal-list a { font-size: var(--text-xs); letter-spacing: 0.1em; color: var(--color-contrast-ink); }
.legal-list a:hover { color: var(--color-contrast-accent); text-decoration: none; }

/* ============ 12 显现 ============ */
html.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
html.has-js [data-reveal].is-visible { opacity: 1; transform: none; }

/* ============ 13 响应式 ============ */
@media (max-width: 1024px) {
  .grid-9 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .span-7, .span-8, .span-9 { grid-column: span 6; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 960px) {
  .header-aside { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 95;
    width: min(84vw, 340px);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding: 84px var(--space-3) var(--space-4);
    overflow-y: auto;
    background-color: var(--color-contrast-surface);
    border-left: var(--border-thick) solid var(--color-primary);
    transform: translateX(103%);
    visibility: hidden;
    transition: transform 0.28s ease, visibility 0.28s ease;
  }
  .site-nav[data-open] { transform: translateX(0); visibility: visible; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 6px; width: 100%; }
  .nav-link { justify-content: flex-start; padding: 12px 14px; border-radius: var(--radius-md); font-size: var(--text-base); }
  .nav-scrim {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 94;
    opacity: 0;
    visibility: hidden;
    background-color: color-mix(in srgb, var(--color-contrast-surface) 74%, transparent);
    transition: opacity 0.28s ease, visibility 0.28s ease;
  }
  .site-header[data-nav-open] .nav-scrim { opacity: 1; visibility: visible; }
  .shard--dots, .shard--wedge { display: none; }
}
@media (max-width: 720px) {
  .shell { padding-inline: var(--space-2); }
  .grid-9 { grid-template-columns: 1fr; gap: var(--space-3); }
  .grid-9 [class*="span-"] { grid-column: 1 / -1; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-3); }
  .footer-legal { flex-direction: column; align-items: flex-start; }
  .brand-tagline { letter-spacing: 0.1em; }
  .index-item { grid-template-columns: auto minmax(0, 1fr); }
  .index-meta { grid-column: 2; }
  .section { padding-block: var(--space-6); }
  .section--lg { padding-block: var(--section-y); }
}

/* ============ 14 降低动态 ============ */
@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;
  }
  html.has-js [data-reveal] { opacity: 1; transform: none; }
  .btn:hover { transform: none; }
}