/* ============================================================
   易游中心 · 共享样式表 /assets/site.css
   千禧科技 / 海派蓝 + 游标橙 / 月度航海日志
   ============================================================ */

:root {
  --color-surface: #f7f7f7;
  --color-surface-alt: #eeeeee;
  --color-surface-deep: #e1e2e2;
  --color-ink: #414849;
  --color-ink-soft: #636d6e;
  --color-ink-muted: #7a8485;
  --color-line: #d6d8d8;
  --color-primary: #18828b;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #d8e7e8;
  --color-accent: #e42711;
  --color-accent-ink: #ffffff;
  --color-highlight: #f4d2ce;
  --color-focus: #dc1b05;
  --color-contrast-surface: #182d2f;
  --color-contrast-ink: #e4e7e7;
  --color-contrast-line: #455657;
  --color-contrast-accent: #f26050;
  --overlay-scrim: linear-gradient(180deg, rgba(24, 45, 47, 0.35) 0%, rgba(24, 45, 47, 0.72) 55%, rgba(24, 45, 47, 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: 10.4px;
  --text-sm: 13.9px;
  --text-base: 16px;
  --text-lg: 21.3px;
  --text-xl: 28.4px;
  --text-2xl: 37.9px;
  --text-3xl: 50.5px;
  --text-4xl: 67.3px;
  --text-display: clamp(40px, 8.2vw, 105px);
  --text-figure: clamp(33px, 5.9vw, 76px);
  --weight-heading: 665;
  --weight-body: 400;
  --leading-body: 1.79;
  --leading-heading: 1.23;
  --tracking-heading: 0.0em;
  --radius-sm: 222px;
  --radius-md: 596px;
  --radius-lg: 971px;
  --radius-pill: 999px;
  --border-thin: 1px;
  --border-thick: 1px;
  --shadow-1: 0 0 0 1px rgba(228, 39, 17, 0.35);
  --shadow-2: 0 0 28px rgba(228, 39, 17, 0.35);
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1200px;
  --measure: 73ch;
  --gutter: 24px;
  --section-y: 70px;
  --section-y-lg: 98px;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

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

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

ol, ul { padding: 0; }

ul.list-reset, ol.list-reset { 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;
}

button, input, select, textarea { font-family: inherit; }

[hidden] { display: none !important; }

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

/* ---------- 中文排版与页面基底 ---------- */
body {
  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);
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

p { text-wrap: pretty; }

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

/* ---------- 布局工具 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

.container--narrow { max-width: calc(var(--measure) + var(--space-8)); }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}

.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-12 { grid-column: span 12; }

/* ---------- 通用文本与分隔 ---------- */
.mono-num,
.index-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.figure-num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.rule-dotted {
  height: 0;
  border: 0;
  border-top: 1px dotted var(--color-line);
  margin: var(--space-3) 0;
}

.prose { max-width: var(--measure); }
.prose > * + * { margin-top: var(--space-3); }
.prose h1 { font-size: var(--text-3xl); }
.prose h2 { font-size: var(--text-2xl); }
.prose h3 { font-size: var(--text-xl); }
.prose p, .prose li, .prose dd { color: var(--color-ink-soft); }
.prose strong { color: var(--color-ink); font-weight: var(--weight-heading); }
.prose a {
  color: var(--color-primary);
  border-bottom: 1px dotted currentColor;
}
.prose a:hover { color: var(--color-accent); }

.breadcrumbs {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}
.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.breadcrumbs li + li::before {
  content: "/";
  margin-right: 7px;
  color: var(--color-line);
}
.breadcrumbs a:hover { color: var(--color-primary); }

/* ---------- 胶囊标签 ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 13px;
  border-radius: var(--radius-pill);
  border: var(--border-thin) solid var(--color-line);
  background-color: var(--color-surface);
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.5;
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.pill--primary {
  background-color: var(--color-primary-soft);
  border-color: color-mix(in srgb, var(--color-primary) 42%, var(--color-primary-soft));
  color: var(--color-primary);
}
.pill--accent {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}
.pill--highlight {
  background-color: var(--color-highlight);
  border-color: color-mix(in srgb, var(--color-accent) 30%, var(--color-highlight));
  color: var(--color-accent);
}
.pill--ink {
  background-color: var(--color-contrast-surface);
  border-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

/* ---------- 可点筛选胶囊 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 15px;
  border-radius: var(--radius-pill);
  border: var(--border-thin) solid var(--color-line);
  background-color: var(--color-surface);
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.chip:hover {
  border-color: var(--color-primary);
  color: var(--color-ink);
}
.chip.is-active,
.chip[aria-pressed="true"] {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 11px 24px;
  border-radius: var(--radius-pill);
  border: var(--border-thin) solid transparent;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.04em;
  line-height: 1.3;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}
.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--color-primary-ink) 40%, transparent);
}
.btn--primary:hover { background-color: color-mix(in srgb, var(--color-primary) 84%, var(--color-contrast-surface)); }
.btn--accent {
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--color-accent-ink) 40%, transparent);
}
.btn--accent:hover { background-color: color-mix(in srgb, var(--color-accent) 86%, var(--color-contrast-surface)); }
.btn--ghost {
  background-color: transparent;
  border-color: var(--color-line);
  color: var(--color-ink);
}
.btn--ghost:hover {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
}
.btn:active { transform: translateY(1px); }

/* ---------- 面板 ---------- */
.panel {
  background-color: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: min(var(--radius-sm), 32px);
  padding: var(--space-4);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--color-primary-ink) 72%, transparent);
}
.panel--deep { background-color: var(--color-surface-deep); }
.panel--flat { padding: 0; overflow: hidden; }
.panel--glow {
  box-shadow:
    var(--shadow-2),
    inset 0 1px 0 color-mix(in srgb, var(--color-primary-ink) 62%, transparent);
}
.panel--contrast {
  background-color: var(--color-contrast-surface);
  border-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--color-contrast-ink) 18%, transparent);
}
.panel--contrast h1,
.panel--contrast h2,
.panel--contrast h3,
.panel--contrast h4 { color: var(--color-contrast-ink); }
.panel--contrast .mono-num,
.panel--contrast .index-num { color: color-mix(in srgb, var(--color-contrast-ink) 66%, transparent); }

/* ---------- 状态指示灯 ---------- */
.status-dot {
  display: inline-block;
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-primary);
  box-shadow:
    0 0 0 3px color-mix(in srgb, var(--color-primary) 22%, transparent),
    0 0 10px color-mix(in srgb, var(--color-primary) 60%, transparent);
}
.status-dot--accent {
  background-color: var(--color-accent);
  box-shadow:
    0 0 0 3px color-mix(in srgb, var(--color-accent) 20%, transparent),
    0 0 10px color-mix(in srgb, var(--color-accent) 55%, transparent);
}
.status-dot--idle {
  background-color: var(--color-ink-muted);
  box-shadow: none;
}

@keyframes status-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.42; }
}
.status-dot--live { animation: status-pulse 2.4s ease-in-out infinite; }

/* ---------- 图片容器 ---------- */
.figure { margin: 0; display: block; }

.figure__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border-radius: min(var(--radius-sm), 32px);
  border: var(--border-thin) solid var(--color-line);
  background-color: var(--color-surface-deep);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--color-primary-ink) 60%, transparent);
}
.figure__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.figure__scrim {
  position: absolute;
  inset: 0;
  background-image: var(--overlay-scrim);
  pointer-events: none;
}
.figure__label {
  position: absolute;
  left: var(--space-3);
  right: var(--space-3);
  bottom: var(--space-2);
  z-index: 2;
  margin: 0;
  color: var(--color-primary-ink);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  line-height: 1.4;
}
.figure__caption {
  margin-top: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  color: var(--color-ink-muted);
}

.figure--wide .figure__media { aspect-ratio: 21 / 9; }
.figure--tall .figure__media { aspect-ratio: 4 / 5; }
.figure--narrow .figure__media { aspect-ratio: 3 / 5; }
.figure--square .figure__media { aspect-ratio: 1 / 1; }

/* ---------- 进入显现 ---------- */
[data-reveal] { transition: opacity 0.24s ease, transform 0.24s ease; }
html.js-on [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
}
html.js-on [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   头部
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background-color: var(--color-surface);
  border-bottom: var(--border-thin) solid var(--color-line);
  transition: box-shadow 0.24s ease;
}
.site-header.is-scrolled {
  box-shadow: 0 10px 26px color-mix(in srgb, var(--color-contrast-surface) 18%, transparent);
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  z-index: 3;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

.skip-link {
  position: absolute;
  left: var(--space-3);
  top: -84px;
  z-index: 90;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  transition: top 0.18s ease;
}
.skip-link:focus { top: var(--space-2); }

.header-bar {
  background-color: var(--color-surface);
  background-image: linear-gradient(
    90deg,
    color-mix(in srgb, var(--color-primary-soft) 60%, transparent) 0%,
    transparent 46%
  );
}

.header-inner {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 72px;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  flex: 0 0 auto;
  padding-block: var(--space-1);
}
.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.06em;
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--color-primary-ink) 55%, transparent),
    0 0 16px color-mix(in srgb, var(--color-primary) 32%, transparent);
}
.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.brand__name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.15;
  color: var(--color-ink);
}
.brand__line {
  font-size: var(--text-xs);
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-1);
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  border: var(--border-thin) solid var(--color-line);
  background-color: var(--color-surface-alt);
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.nav-toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-ink);
}
.nav-toggle[aria-expanded="true"] {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 16px;
  height: 11px;
}
.nav-toggle__bars span {
  display: block;
  width: 100%;
  height: 1.5px;
  border-radius: var(--radius-pill);
  background-color: currentColor;
}

/* 导航 */
.site-nav {
  margin-left: auto;
  min-width: 0;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: var(--space-1) 0;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--color-line) transparent;
}
.nav-list::-webkit-scrollbar { height: 4px; }
.nav-list::-webkit-scrollbar-thumb {
  background-color: var(--color-line);
  border-radius: var(--radius-pill);
}
.nav-list__item { flex: 0 0 auto; }

.nav-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 15px;
  border-radius: var(--radius-pill);
  border: var(--border-thin) solid var(--color-line);
  background-color: var(--color-surface-alt);
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  line-height: 1.25;
  white-space: nowrap;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}
.nav-pill__idx {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
  transition: color 0.18s ease;
}
.nav-pill:hover {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-ink);
}
.nav-pill:hover .nav-pill__idx { color: var(--color-primary); }
.nav-pill[aria-current="page"] {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--color-accent-ink) 42%, transparent);
}
.nav-pill[aria-current="page"] .nav-pill__idx {
  color: color-mix(in srgb, var(--color-accent-ink) 74%, transparent);
}

/* 状态条 */
.utility-bar {
  background-color: var(--color-surface-deep);
  border-top: var(--border-thin) solid var(--color-line);
}
.utility-bar__inner {
  min-height: 34px;
  padding-block: 6px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.03em;
  color: var(--color-ink-soft);
}
.utility-bar__text {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.utility-bar__meta {
  margin-left: auto;
  color: var(--color-ink-muted);
  white-space: nowrap;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.footer-ruler {
  position: relative;
  height: 30px;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-3);
}
.footer-ruler::before {
  content: "";
  position: absolute;
  left: var(--space-3);
  right: var(--space-3);
  bottom: 0;
  height: 12px;
  background-image: repeating-linear-gradient(
    90deg,
    var(--color-contrast-line) 0 1px,
    transparent 1px 18px
  );
  background-repeat: repeat-x;
  background-position: left bottom;
  background-size: 18px 12px;
}
.footer-ruler::after {
  content: "";
  position: absolute;
  left: var(--space-3);
  bottom: 0;
  width: 132px;
  height: 2px;
  background-color: var(--color-contrast-accent);
}

.footer-inner {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding: var(--space-8) var(--space-3) var(--space-6);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: var(--space-8);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-width: 0;
}
.footer-brand__mark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.footer-brand__name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
}
.footer-brand__line {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: color-mix(in srgb, var(--color-contrast-ink) 84%, transparent);
}
.footer-brand__note {
  max-width: 42ch;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: color-mix(in srgb, var(--color-contrast-ink) 66%, transparent);
}
.footer-brand__status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-1);
}
.site-footer .mono-num { color: color-mix(in srgb, var(--color-contrast-ink) 70%, transparent); }

.footer-index {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}
.footer-col { min-width: 0; }
.footer-col__title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.14em;
  color: var(--color-contrast-accent);
  margin-bottom: var(--space-2);
}
.footer-col__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col__link {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: color-mix(in srgb, var(--color-contrast-ink) 88%, transparent);
  border-bottom: 1px dotted transparent;
  padding-bottom: 2px;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.footer-col__link:hover {
  color: var(--color-contrast-accent);
  border-bottom-color: var(--color-contrast-accent);
}

.footer-contact {
  max-width: var(--container);
  margin-inline: auto;
  padding: var(--space-3);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  border-top: 1px dotted var(--color-contrast-line);
}
.footer-contact__line {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: color-mix(in srgb, var(--color-contrast-ink) 76%, transparent);
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  border: var(--border-thin) solid var(--color-contrast-line);
  color: var(--color-contrast-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  transition: border-color 0.18s ease, color 0.18s ease, background-color 0.18s ease;
}
.copy-btn:hover {
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-accent);
}
.copy-btn:active {
  background-color: color-mix(in srgb, var(--color-contrast-accent) 18%, transparent);
}

.footer-legal {
  max-width: var(--container);
  margin-inline: auto;
  padding: var(--space-3) var(--space-3) var(--space-6);
  border-top: 1px dotted var(--color-contrast-line);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.03em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}
.footer-legal__item { min-width: 0; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 960px) {
  .brand__line { display: none; }
  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-left: 0;
    display: none;
    padding: var(--space-2) var(--space-3) var(--space-3);
    background-color: var(--color-surface-deep);
    border-bottom: var(--border-thin) solid var(--color-line);
    box-shadow: 0 18px 30px color-mix(in srgb, var(--color-contrast-surface) 26%, transparent);
    max-height: calc(100vh - 120px);
    overflow-y: auto;
  }
  .site-nav[data-open] { display: block; }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    overflow: visible;
    padding: 0;
  }
  .nav-pill {
    width: 100%;
    justify-content: flex-start;
    padding: 12px 18px;
    font-size: var(--text-base);
  }
  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-6);
    padding-block: var(--space-6);
  }
}

@media (max-width: 900px) {
  .grid-12 > [class*="span-"] { grid-column: span 12; }
}

@media (max-width: 680px) {
  .header-inner { min-height: 64px; gap: var(--space-2); }
  .utility-bar__meta { display: none; }
  .footer-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4) var(--space-3);
  }
  .footer-contact,
  .footer-legal {
    flex-direction: column;
    align-items: flex-start;
  }
  .panel { padding: var(--space-3); }
}

@media (max-width: 420px) {
  .footer-index { grid-template-columns: minmax(0, 1fr); }
  .brand__name { font-size: var(--text-base); }
}

/* ============================================================
   降低动效
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .status-dot--live { animation: none; }
  html.js-on [data-reveal] { opacity: 1; transform: none; }
  .scroll-progress { transition: none; }
}