/* ============================================================
   谈球吧赛场 XMKB · 共享样式 /assets/site.css
   1 令牌  2 重置与基础  3 排版  4 通用组件  5 头部  6 页脚
   7 响应式  8 动效与可访问性
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --ink-950: #06120F;
  --ink-900: #0C201B;
  --ink-700: #12332B;
  --ink-500: #1E5C4C;
  --mint-400: #43F2D2;
  --mint-300: #7CF8E2;
  --teal-600: #1BAE95;
  --signal-500: #FF5A2B;
  --signal-400: #FF8A66;
  --amber-400: #FFB03A;
  --mist-50: #E8F5F1;
  --mist-400: #8FA9A2;
  --line: rgba(30, 92, 76, 0.72);
  --line-soft: rgba(30, 92, 76, 0.42);
  --line-faint: rgba(30, 92, 76, 0.26);
  --font-sans: "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --radius-lg: 26px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --radius-pill: 999px;
  --wrap: 1240px;
  --gap: clamp(16px, 2.2vw, 28px);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --header-h: 78px;
}

/* ---------- 2. 重置与基础 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

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

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

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

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist-50);
  background-color: var(--ink-950);
  background-image:
    radial-gradient(880px 520px at 84% -10%, rgba(67, 242, 210, 0.13), transparent 62%),
    radial-gradient(720px 520px at 2% 8%, rgba(255, 90, 43, 0.09), transparent 60%),
    radial-gradient(900px 720px at 50% 108%, rgba(27, 174, 149, 0.10), transparent 68%);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(30, 92, 76, 0.20) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 92, 76, 0.20) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(130% 100% at 50% 0%, #000 26%, rgba(0, 0, 0, 0.35) 62%, transparent 92%);
  mask-image: radial-gradient(130% 100% at 50% 0%, #000 26%, rgba(0, 0, 0, 0.35) 62%, transparent 92%);
}

main,
.site-footer { position: relative; z-index: 1; }

main { padding-top: clamp(18px, 3vw, 36px); }

#main-content { scroll-margin-top: calc(var(--header-h) + 16px); }

[id] { scroll-margin-top: calc(var(--header-h) + 20px); }

a { color: var(--mint-400); text-decoration: none; transition: color 0.18s var(--ease); }
a:hover { color: var(--mint-300); }

button { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--mint-400);
  outline-offset: 3px;
  border-radius: 6px;
}

::selection { background: var(--mint-400); color: #04140F; }

.skip-link {
  position: fixed;
  top: 10px;
  left: 50%;
  transform: translate(-50%, -180%);
  z-index: 999;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  background: var(--mint-400);
  color: #04140F;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.02em;
  transition: transform 0.18s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible { transform: translate(-50%, 0); color: #04140F; }

/* ---------- 3. 排版系统 ---------- */
h1, h2, h3, h4 { line-height: 1.12; font-weight: 800; letter-spacing: -0.02em; }

.display-xl {
  font-size: clamp(44px, 8.4vw, 112px);
  line-height: 0.94;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.display-lg {
  font-size: clamp(32px, 5vw, 64px);
  line-height: 1.02;
  font-weight: 900;
  letter-spacing: -0.025em;
}

.display-md {
  font-size: clamp(22px, 2.8vw, 34px);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.015em;
}

.lede {
  max-width: 36em;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--mist-400);
}

.prose { max-width: 38em; line-height: 1.8; color: var(--mist-50); }
.prose p + p { margin-top: 1em; }
.prose strong { color: var(--mint-400); font-weight: 700; }

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: -0.02em;
  font-weight: 600;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--mint-400);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: 0.8;
}

.pin-note {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--amber-400);
}

.divider {
  height: 1px;
  border: 0;
  margin-block: clamp(20px, 3vw, 36px);
  background: linear-gradient(90deg, var(--line), rgba(30, 92, 76, 0));
}

/* ---------- 4. 通用组件 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 32px);
}

.section { position: relative; z-index: 1; padding-block: clamp(48px, 7vw, 96px); }
.section--tight { padding-block: clamp(28px, 4vw, 56px); }

.section-head {
  display: grid;
  gap: 12px;
  max-width: 58ch;
  margin-bottom: clamp(22px, 3vw, 38px);
}

.section-head__title {
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.section-head__note { font-size: 15px; line-height: 1.8; color: var(--mist-400); }

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease), transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.btn--primary {
  background: var(--signal-500);
  color: #170702;
  box-shadow: 0 8px 22px rgba(255, 90, 43, 0.22);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: #FF7448;
  color: #170702;
  transform: translateY(-1px);
  box-shadow: 0 12px 26px rgba(255, 90, 43, 0.3);
}

.btn--ghost {
  background: rgba(12, 32, 27, 0.55);
  border-color: var(--line);
  color: var(--mist-50);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--mint-400);
  color: var(--mint-400);
  background: rgba(67, 242, 210, 0.08);
}

.btn--mint { background: var(--mint-400); color: #04140F; }
.btn--mint:hover,
.btn--mint:focus-visible { background: var(--mint-300); color: #04140F; }

.btn__glyph {
  font-family: var(--font-mono);
  font-size: 13px;
  transition: transform 0.18s var(--ease);
}

.btn:hover .btn__glyph { transform: translateX(3px); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(30, 92, 76, 0.16);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--mist-400);
}

.tag--mint { color: var(--mint-400); border-color: rgba(67, 242, 210, 0.42); background: rgba(67, 242, 210, 0.10); }
.tag--signal { color: var(--signal-400); border-color: rgba(255, 90, 43, 0.45); background: rgba(255, 90, 43, 0.12); }
.tag--amber { color: var(--amber-400); border-color: rgba(255, 176, 58, 0.42); background: rgba(255, 176, 58, 0.12); }

.grid { display: grid; gap: var(--gap); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(16px, 2vw, 24px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(165deg, rgba(18, 51, 43, 0.9), rgba(12, 32, 27, 0.86));
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.card:hover {
  border-color: rgba(67, 242, 210, 0.55);
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.32);
}

.card__title { font-size: clamp(17px, 1.7vw, 20px); font-weight: 800; letter-spacing: -0.01em; }
.card__meta { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; color: var(--mist-400); }

.panel {
  position: relative;
  padding: clamp(20px, 2.6vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, rgba(12, 32, 27, 0.94), rgba(6, 18, 15, 0.94));
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.panel__title { font-size: clamp(18px, 2vw, 24px); font-weight: 800; letter-spacing: -0.015em; }

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  isolation: isolate;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, var(--ink-900), var(--ink-950));
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--line-faint) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-faint) 1px, transparent 1px);
  background-size: 48px 48px;
}

.media-frame > img,
.media-frame > picture > img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__caption {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 2;
  padding: 4px 10px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
  background: rgba(6, 18, 15, 0.74);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--mist-400);
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

.rail {
  display: flex;
  gap: var(--gap);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  padding: 4px 4px 18px;
  scrollbar-width: thin;
  scrollbar-color: var(--ink-500) transparent;
}

.rail > * { flex: 0 0 auto; scroll-snap-align: start; }
.rail::-webkit-scrollbar { height: 6px; }
.rail::-webkit-scrollbar-track { background: transparent; }
.rail::-webkit-scrollbar-thumb { background: var(--ink-500); border-radius: 99px; }

.breadcrumbs { margin-block: clamp(6px, 1.4vw, 14px); }

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist-400);
}

.breadcrumbs__item { display: flex; align-items: center; gap: 8px; }
.breadcrumbs__item + .breadcrumbs__item::before { content: "/"; color: var(--ink-500); }
.breadcrumbs__link { color: var(--mist-400); }
.breadcrumbs__link:hover { color: var(--mint-400); }
.breadcrumbs__item--current { color: var(--mist-50); }

/* ---------- 5. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  padding: 14px 0 12px;
  background: linear-gradient(180deg, rgba(6, 18, 15, 0.96) 0%, rgba(6, 18, 15, 0.82) 60%, rgba(6, 18, 15, 0) 100%);
  -webkit-backdrop-filter: blur(14px) saturate(1.15);
  backdrop-filter: blur(14px) saturate(1.15);
  transition: padding 0.24s var(--ease), background 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.site-header[data-compact] {
  padding: 8px 0 8px;
  background: rgba(6, 18, 15, 0.94);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.45);
}

.header-shell {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 20px);
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(14px, 4vw, 32px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  min-width: 0;
  color: var(--mist-50);
}

.brand:hover { color: var(--mist-50); }

.brand-mark {
  position: relative;
  flex: none;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(67, 242, 210, 0.45);
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(67, 242, 210, 0.22), rgba(6, 18, 15, 0) 70%);
}

.brand-mark__ring {
  position: absolute;
  inset: 5px;
  border: 1px dashed rgba(67, 242, 210, 0.42);
  border-radius: 50%;
}

.brand-mark__dot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--signal-500);
  box-shadow: 0 0 0 3px rgba(255, 90, 43, 0.18);
}

.brand-text { display: grid; gap: 2px; min-width: 0; }

.brand-text__name {
  font-size: 17px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--mist-50);
}

.brand-text__meta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  line-height: 1.1;
  color: var(--mist-400);
  text-transform: uppercase;
}

.brand-text__code {
  padding: 1px 5px;
  border: 1px solid rgba(67, 242, 210, 0.35);
  border-radius: 4px;
  color: var(--mint-400);
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 5px 12px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--mist-400);
  white-space: nowrap;
}

.header-status__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint-400);
  box-shadow: 0 0 0 3px rgba(67, 242, 210, 0.16);
}

.nav-capsule {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(12, 32, 27, 0.72);
  box-shadow: inset 0 1px 0 rgba(232, 245, 241, 0.05), 0 10px 30px rgba(0, 0, 0, 0.28);
}

.nav-capsule__label { display: none; }

.nav-list { display: flex; align-items: center; gap: 2px; }

.nav-link {
  display: block;
  padding: 8px 13px;
  border-radius: var(--radius-pill);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--mist-400);
  white-space: nowrap;
  transition: color 0.18s var(--ease), background 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--mint-400);
  background: rgba(67, 242, 210, 0.10);
}

.nav-link[aria-current="page"] {
  color: #04140F;
  background: var(--mint-400);
  font-weight: 800;
  box-shadow: 0 0 0 1px rgba(67, 242, 210, 0.5), 0 6px 18px rgba(67, 242, 210, 0.22);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  flex: 0 0 auto;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid rgba(67, 242, 210, 0.35);
  border-radius: var(--radius-pill);
  background: rgba(12, 32, 27, 0.9);
  color: var(--mist-50);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background 0.18s var(--ease);
}

.nav-toggle:hover { border-color: var(--mint-400); color: var(--mint-400); }

.nav-toggle__bars { display: grid; gap: 4px; width: 16px; }

.nav-toggle__bars span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--mint-400);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.site-header[data-open] .nav-toggle__bars span:first-child { transform: translateY(3px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars span:last-child { transform: translateY(-3px) rotate(-45deg); }

.header-progress {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--mint-400), var(--signal-500));
  transition: transform 0.1s linear;
}

/* ---------- 6. 页脚 ---------- */
.site-footer {
  margin-top: clamp(56px, 8vw, 110px);
  padding: 0 0 clamp(20px, 3vw, 32px);
  border-top: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(6, 18, 15, 0.35), rgba(6, 18, 15, 0.96) 46%),
    var(--ink-900);
}

.footer-ruler {
  height: 10px;
  margin-bottom: clamp(24px, 3.4vw, 44px);
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 24px);
  opacity: 0.8;
}

.footer-shell {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 32px);
}

.footer-legend {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.95fr) minmax(0, 0.7fr) minmax(0, 0.95fr);
  gap: clamp(24px, 3vw, 44px);
}

.footer-legend__brand { min-width: 0; }

.footer-brand { display: inline-grid; gap: 4px; color: var(--mist-50); }
.footer-brand:hover { color: var(--mist-50); }

.footer-brand__name {
  font-size: clamp(19px, 2vw, 23px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.footer-brand__meta {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--mint-400);
  text-transform: uppercase;
}

.footer-note {
  max-width: 30em;
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist-400);
}

.footer-coord {
  display: grid;
  gap: 8px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-soft);
}

.coord-item { display: flex; align-items: baseline; gap: 10px; }

.coord-item__key {
  flex: none;
  min-width: 46px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--amber-400);
}

.coord-item__val {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--mist-400);
}

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

.footer-col__title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--mist-400);
}

.service-list { display: grid; }

.service-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line-faint);
}

.service-item__index {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--mint-400);
  opacity: 0.85;
}

.service-item__label {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--mist-50);
  transition: color 0.18s var(--ease), transform 0.18s var(--ease);
}

.service-item:hover .service-item__label { color: var(--mint-400); transform: translateX(3px); }

.legal-list { display: grid; gap: 8px; }

.legal-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--mist-400);
}

.legal-link::before {
  content: "";
  width: 5px;
  height: 5px;
  border: 1px solid var(--teal-600);
  border-radius: 1px;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.legal-link:hover,
.legal-link:focus-visible { color: var(--mint-400); }
.legal-link:hover::before { background: var(--mint-400); border-color: var(--mint-400); }

.contact-list { display: grid; gap: 10px; }

.contact-line {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 8px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--mist-400);
  overflow-wrap: anywhere;
}

.contact-line__key {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--amber-400);
}

.contact-line__val { color: var(--mist-50); opacity: 0.92; }

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  margin-top: clamp(24px, 3.4vw, 42px);
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(143, 169, 162, 0.9);
}

.footer-record {
  padding: 2px 10px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
  color: var(--mist-400);
}

.footer-base__coord { color: var(--ink-500); letter-spacing: 0.18em; }

/* ---------- 7. 响应式 ---------- */
@media (max-width: 1180px) {
  .header-status { display: none; }
}

@media (max-width: 1120px) {
  .nav-toggle { display: inline-flex; }

  .nav-capsule {
    position: absolute;
    top: calc(100% - 2px);
    right: 14px;
    left: 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    max-height: min(72vh, 560px);
    overflow-y: auto;
    padding: 14px;
    border-radius: 24px;
    background: rgba(8, 26, 22, 0.985);
    box-shadow: 0 28px 60px rgba(0, 0, 0, 0.6);
  }

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

  .nav-capsule__label {
    display: block;
    padding: 2px 8px 10px;
    margin-bottom: 4px;
    border-bottom: 1px solid var(--line-soft);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.26em;
    color: var(--mint-400);
  }

  .nav-list { flex-direction: column; align-items: stretch; gap: 2px; }

  .nav-link {
    padding: 12px 14px;
    border-radius: 14px;
    font-size: 15px;
    color: var(--mist-50);
  }

  .nav-link[aria-current="page"] { border-radius: 14px; }
}

@media (max-width: 1024px) {
  .footer-legend { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-legend__brand { grid-column: 1 / -1; }
  .grid--split { grid-template-columns: minmax(0, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  .header-actions .btn--ghost { display: none; }
  .grid--2, .grid--3 { grid-template-columns: minmax(0, 1fr); }
  .btn { padding: 10px 16px; }
}

@media (max-width: 600px) {
  :root { --header-h: 70px; }

  .site-header { padding: 10px 0; }
  .brand-text__meta { display: none; }
  .brand-text__name { font-size: 15.5px; }
  .brand-mark { width: 32px; height: 32px; }
  .header-actions .btn--primary { padding: 9px 13px; font-size: 12.5px; }
  .btn__glyph { display: none; }
  .nav-toggle { padding: 9px 12px; font-size: 12px; }
  .footer-legend { grid-template-columns: minmax(0, 1fr); }
  .footer-base { justify-content: flex-start; }
  .display-xl { font-size: clamp(38px, 12vw, 56px); }
}

/* ---------- 8. 动效与可访问性 ---------- */
html.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.26s var(--ease), transform 0.26s var(--ease);
}

html.js-ready [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@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;
    scroll-behavior: auto !important;
  }

  html.js-ready [data-reveal] { opacity: 1; transform: none; }
  .site-header[data-compact] .nav-link,
  .card:hover { transform: none; }
}