/* ============================================================
   天博体育 · 共享站点样式表  /assets/site.css
   设计基底：夜间赛场终端 + 粗野主义边界 + 展览画册节奏
   ============================================================ */

/* ---------- 01 Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

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

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

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: 0;
}

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

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

/* ---------- 02 Design Tokens ---------- */
:root {
  /* 色彩体系 */
  --c-space: #0B1B33;
  --c-space-2: #16304F;
  --c-ink: #05070C;
  --c-rock: #6E7278;
  --c-cream: #F2EDE4;
  --c-clay: #B9603F;
  --c-moss: #5C7A5A;
  --c-orange: #FF6A1A;
  --c-lime: #B6FF3B;
  --c-white: #FFFFFF;

  --bg: var(--c-space);
  --surface: var(--c-space-2);
  --text: var(--c-cream);
  --text-dim: var(--c-rock);

  --line-hard: 3px solid var(--c-ink);
  --line-soft: 2px solid rgba(110, 114, 120, 0.38);
  --shadow-hard: 6px 6px 0 var(--c-ink);
  --shadow-deep: 10px 10px 0 rgba(5, 7, 12, 0.85);

  /* 字体 */
  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular,
    Menlo, Consolas, "Courier New", monospace;

  /* 尺度 */
  --shell: 1360px;
  --gutter: clamp(16px, 4vw, 40px);
  --gap: clamp(16px, 2.2vw, 28px);

  /* 动效 */
  --t-fast: 160ms;
  --t-mid: 240ms;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 03 Base Typography ---------- */
body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

h1 { font-size: clamp(30px, 5vw, 60px); }
h2 { font-size: clamp(22px, 2.8vw, 34px); }
h3 { font-size: clamp(18px, 2vw, 22px); }

strong { font-weight: 900; }

code, kbd, samp, pre {
  font-family: var(--font-mono);
}

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

:focus-visible {
  outline: 3px solid var(--c-orange);
  outline-offset: 3px;
}

/* ---------- 04 Layout Primitives ---------- */
.wrap {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(48px, 7vw, 104px);
  position: relative;
}

.stack > * + * { margin-top: 1em; }
.stack-lg > * + * { margin-top: 2rem; }

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

.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.grid--3  { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--2  { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 32px);
  align-items: end;
  border-bottom: 2px solid rgba(110, 114, 120, 0.35);
  padding-bottom: 16px;
  margin-bottom: clamp(24px, 3.5vw, 44px);
}

.section-head__title {
  font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 900;
  letter-spacing: -0.02em;
}

.section-head__note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-rock);
  margin-top: 6px;
}

.section-index {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(30px, 4.4vw, 52px);
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: transparent;
  -webkit-text-stroke: 2px var(--c-rock);
  transition: color var(--t-mid) ease-out, -webkit-text-stroke-color var(--t-mid) ease-out;
}

@supports not (-webkit-text-stroke: 1px black) {
  .section-index { color: var(--c-rock); }
}

.is-revealed > .section-index,
.is-revealed .section-index,
.section-index.is-revealed {
  color: var(--c-orange);
  -webkit-text-stroke-color: var(--c-orange);
}

.rule-skew {
  height: 56px;
  background: var(--c-space-2);
  clip-path: polygon(0 28%, 100% 0, 100% 72%, 0 100%);
}

.panel-cream {
  background: var(--c-cream);
  color: var(--c-space);
}

.panel-cream .section-head { border-bottom-color: rgba(11, 27, 51, 0.22); }
.panel-cream .card { border-color: var(--c-ink); box-shadow: var(--shadow-hard); }
.panel-cream .data-label,
.panel-cream .section-head__note { color: rgba(11, 27, 51, 0.55); }

/* ---------- 05 Buttons ---------- */
.btn {
  --btn-bg: var(--c-cream);
  --btn-fg: var(--c-ink);
  --btn-border: var(--c-ink);
  --btn-shadow: var(--c-ink);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 18px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.02em;
  line-height: 1.2;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 2px solid var(--btn-border);
  box-shadow: 4px 4px 0 var(--btn-shadow);
  cursor: pointer;
  transition: transform var(--t-fast) var(--ease),
    box-shadow var(--t-fast) var(--ease),
    background-color var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease);
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--btn-shadow);
}

.btn:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--btn-shadow);
}

.btn--primary { --btn-bg: var(--c-orange); --btn-fg: var(--c-ink); }
.btn--primary:hover { --btn-bg: #ff7c36; }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--c-cream);
  --btn-border: rgba(242, 237, 228, 0.45);
  --btn-shadow: rgba(5, 7, 12, 0.9);
  box-shadow: none;
}

.btn--ghost:hover {
  --btn-border: var(--c-orange);
  --btn-fg: var(--c-orange);
  box-shadow: 4px 4px 0 rgba(5, 7, 12, 0.9);
}

.btn--quiet {
  --btn-bg: transparent;
  --btn-fg: var(--c-lime);
  --btn-border: rgba(182, 255, 59, 0.45);
  --btn-shadow: transparent;
  box-shadow: none;
}

.btn--quiet:hover { --btn-border: var(--c-lime); --btn-bg: rgba(182, 255, 59, 0.1); }

/* ---------- 06 Cards / Tags / Data ---------- */
.card {
  position: relative;
  background: var(--surface);
  border: 2px solid var(--c-ink);
  box-shadow: var(--shadow-hard);
  padding: clamp(16px, 2.4vw, 28px);
  transition: transform var(--t-fast) var(--ease),
    box-shadow var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease);
}

.card:hover {
  border-color: var(--c-orange);
  transform: translate(-4px, -4px);
  box-shadow: var(--shadow-deep);
}

.card--outline {
  background: transparent;
  border-color: rgba(242, 237, 228, 0.22);
  box-shadow: none;
}

.card--outline:hover {
  border-color: var(--c-orange);
  box-shadow: 6px 6px 0 rgba(5, 7, 12, 0.8);
}

.card--overhang {
  margin-left: calc(-1 * clamp(16px, 3vw, 40px));
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 5px 10px;
  border: 2px solid currentColor;
  color: var(--c-cream);
  white-space: nowrap;
}

.tag--clay   { color: var(--c-clay); }
.tag--moss   { color: var(--c-moss); }
.tag--orange { color: var(--c-orange); }
.tag--lime   { color: var(--c-lime); }
.tag--rock   { color: var(--c-rock); }

.data-figure {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(3rem, 8vw, 8rem);
  line-height: 0.86;
  letter-spacing: -0.04em;
  color: var(--c-white);
}

.data-figure--orange { color: var(--c-orange); }
.data-figure--lime   { color: var(--c-lime); }

.data-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-rock);
  margin-top: 10px;
}

.hl {
  background: var(--c-lime);
  color: var(--c-ink);
  padding: 1px 6px;
  font-weight: 900;
}

.term {
  border-bottom: 2px dotted var(--c-rock);
  cursor: help;
}

.source-note {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  border-left: 4px solid var(--c-moss);
  background: rgba(92, 122, 90, 0.14);
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-cream);
}

.source-note__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-lime);
  flex: 0 0 auto;
  padding-top: 2px;
}

/* ---------- 07 Index List ---------- */
.index-list {
  border-top: 2px solid rgba(110, 114, 120, 0.35);
}

.index-list__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: clamp(12px, 2vw, 24px);
  align-items: baseline;
  padding: 14px 10px;
  color: var(--c-cream);
  border-bottom: 1px solid rgba(110, 114, 120, 0.28);
  transition: background-color var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease);
}

.index-list__item:hover,
.index-list__item:focus-visible {
  background-color: var(--c-cream);
  color: var(--c-space);
  transform: translateX(8px);
}

.index-list__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-rock);
}

.index-list__item:hover .index-list__num {
  color: var(--c-clay);
}

.index-list__title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.index-list__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-rock);
}

.index-list__item:hover .index-list__meta {
  color: rgba(11, 27, 51, 0.6);
}

/* ---------- 08 Breadcrumbs / Prose ---------- */
.breadcrumbs {
  margin-bottom: clamp(22px, 3vw, 36px);
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-rock);
}

.breadcrumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.breadcrumbs__item::after {
  content: "/";
  color: rgba(110, 114, 120, 0.55);
}

.breadcrumbs__item:last-child::after { content: ""; }

.breadcrumbs__link {
  color: var(--c-rock);
  transition: color var(--t-fast) var(--ease);
}

.breadcrumbs__link:hover { color: var(--c-orange); }

.breadcrumbs__current { color: var(--c-cream); }

.prose {
  max-width: 72ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-cream);
}

.prose > * + * { margin-top: 1.1em; }

.prose h2 {
  font-size: clamp(22px, 2.6vw, 30px);
  margin-top: 2em;
  letter-spacing: -0.02em;
}

.prose h3 {
  margin-top: 1.6em;
}

.prose a {
  color: var(--c-lime);
  border-bottom: 2px solid currentColor;
  transition: color var(--t-fast) var(--ease);
}

.prose a:hover { color: var(--c-orange); }

.prose li {
  position: relative;
  padding-left: 24px;
}

.prose li + li { margin-top: 0.5em; }

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 9px;
  background: var(--c-moss);
}

.prose--light { color: var(--c-space); }
.prose--light a { color: var(--c-clay); border-bottom-color: currentColor; }

/* ---------- 09 Media Containers（供页面阶段放置图片） ---------- */
.media {
  position: relative;
  overflow: hidden;
  background: var(--c-space-2);
  border: 2px solid var(--c-ink);
  box-shadow: var(--shadow-hard);
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media--ratio-16-9 { aspect-ratio: 16 / 9; }
.media--ratio-4-3  { aspect-ratio: 4 / 3; }
.media--ratio-3-4  { aspect-ratio: 3 / 4; }
.media--ratio-1-1  { aspect-ratio: 1 / 1; }

.media--skew {
  clip-path: polygon(0 4%, 100% 0, 100% 96%, 0 100%);
}

.media--motion::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    92deg,
    rgba(255, 106, 26, 0.12) 0 2px,
    transparent 2px 7px
  );
  mix-blend-mode: screen;
}

.media--duotone img {
  filter: grayscale(1) contrast(1.12) brightness(0.94);
}

.media__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  background: var(--c-ink);
  color: var(--c-cream);
  padding: 6px 10px;
  border-top: 2px solid var(--c-orange);
}

/* ---------- 10 Skip Link ---------- */
.skip-link {
  position: fixed;
  top: -120px;
  left: var(--gutter);
  z-index: 120;
  display: inline-block;
  padding: 12px 18px;
  background: var(--c-lime);
  color: var(--c-ink);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  border: 3px solid var(--c-ink);
  box-shadow: var(--shadow-hard);
  transition: top var(--t-mid) var(--ease);
}

.skip-link:focus { top: 12px; }

/* ---------- 11 Site Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--c-space);
  border-bottom: 3px solid var(--c-ink);
  transition: box-shadow var(--t-mid) var(--ease);
}

body.is-scrolled .site-header {
  box-shadow: 0 10px 0 rgba(5, 7, 12, 0.55);
}

.site-header__inner {
  max-width: var(--shell);
  margin-inline: auto;
  padding: 12px var(--gutter);
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.4vw, 36px);
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: var(--c-white);
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: var(--c-orange);
  color: var(--c-ink);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  border: 2px solid var(--c-ink);
  box-shadow: 4px 4px 0 var(--c-ink);
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.brand:hover .brand__mark {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--c-ink);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.12;
}

.brand__name {
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.brand__line {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--c-rock);
}

/* 快速访问通道 */
.header-quick {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 5px 11px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-cream);
  border: 1px dashed rgba(242, 237, 228, 0.28);
}

.header-quick__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-lime);
  animation: tb-pulse 1.8s ease-out 1 both;
}

@keyframes tb-pulse {
  0%   { transform: scale(1);   box-shadow: 0 0 0 0 rgba(182, 255, 59, 0.55); }
  55%  { transform: scale(1.15); box-shadow: 0 0 0 7px rgba(182, 255, 59, 0); }
  100% { transform: scale(1);   box-shadow: 0 0 0 0 rgba(182, 255, 59, 0); }
}

/* 导航 */
.site-nav {
  margin-left: auto;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.8vw, 26px);
}

.site-nav__item { display: block; }

.site-nav__link {
  position: relative;
  display: block;
  padding: 10px 2px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--c-cream);
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 3px;
  height: 2px;
  background: var(--c-orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t-fast) var(--ease);
}

.site-nav__link:hover { color: var(--c-white); }
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"] { color: var(--c-white); font-weight: 900; }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

/* 页头行动区 */
.site-header__cta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  flex: 0 0 auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: var(--c-space-2);
  border: 2px solid var(--c-ink);
  box-shadow: 4px 4px 0 var(--c-ink);
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease),
    box-shadow var(--t-fast) var(--ease);
}

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--c-cream);
  transition: transform var(--t-fast) var(--ease),
    opacity var(--t-fast) var(--ease),
    background-color var(--t-fast) var(--ease);
}

.nav-toggle[aria-expanded="true"] {
  background: var(--c-orange);
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--c-ink);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar { background: var(--c-ink); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 阅读进度条 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -3px;
  height: 3px;
  z-index: 2;
  overflow: hidden;
  pointer-events: none;
}

.scroll-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--c-orange), var(--c-lime));
}

/* ---------- 12 Site Footer ---------- */
.site-footer {
  position: relative;
  background: var(--c-ink);
  color: var(--c-cream);
  border-top: 3px solid var(--c-orange);
}

.site-footer__inner {
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(40px, 6vw, 76px) var(--gutter) clamp(32px, 4vw, 56px);
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 72px);
}

.footer-brand__link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--c-cream);
}

.footer-brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--c-space-2);
  color: var(--c-lime);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  border: 2px solid var(--c-lime);
}

.footer-brand__name {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.footer-brand__line {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-rock);
}

.footer-brand__region {
  margin-top: 8px;
  max-width: 34em;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(242, 237, 228, 0.72);
}

.footer-contact {
  display: grid;
  gap: 8px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(110, 114, 120, 0.35);
}

.footer-contact li {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 14px;
}

.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-rock);
}

.footer-contact__value {
  color: var(--c-cream);
  overflow-wrap: anywhere;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
  align-content: start;
}

.footer-nav__title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-rock);
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 1px solid rgba(110, 114, 120, 0.35);
}

.footer-nav__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-nav__link {
  display: inline-block;
  padding: 6px 0;
  font-size: 15px;
  color: var(--c-cream);
  transition: transform var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease);
}

.footer-nav__link:hover,
.footer-nav__link:focus-visible {
  color: var(--c-orange);
  transform: translateX(6px);
}

.footer-nav__link[aria-current="page"] { color: var(--c-lime); }

.site-footer__status {
  border-top: 1px solid rgba(110, 114, 120, 0.35);
  background: var(--c-space);
}

.footer-status {
  max-width: var(--shell);
  margin-inline: auto;
  padding: 18px var(--gutter);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-rock);
}

.footer-status__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-status__item--accent { color: var(--c-lime); }

/* ---------- 13 Reveal Utilities ---------- */
[data-reveal] {
  transition: opacity 520ms ease-out, transform 520ms ease-out;
}

html.has-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
}

html.has-reveal [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- 14 Mobile Dock（页面可选） ---------- */
.mobile-dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 70;
  display: none;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 8px var(--gutter) calc(8px + env(safe-area-inset-bottom));
  background: var(--c-space-2);
  border-top: 3px solid var(--c-ink);
}

.mobile-dock__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  font-size: 14px;
  font-weight: 900;
  color: var(--c-cream);
  border: 2px solid rgba(242, 237, 228, 0.4);
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.mobile-dock__btn:hover { border-color: var(--c-orange); color: var(--c-orange); }

.mobile-dock__btn--primary {
  background: var(--c-orange);
  color: var(--c-ink);
  border-color: var(--c-ink);
}

.mobile-dock__btn--primary:hover { color: var(--c-ink); border-color: var(--c-ink); }

/* ---------- 15 Responsive ---------- */
@media (max-width: 1200px) {
  .header-quick { display: none; }
}

@media (max-width: 1024px) {
  .grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .grid--3  { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-footer__top { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 980px) {
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-left: 0;
    display: none;
    max-height: 74vh;
    overflow-y: auto;
    padding: 8px var(--gutter) 22px;
    background: var(--c-space-2);
    border-top: 2px solid var(--c-ink);
    border-bottom: 3px solid var(--c-ink);
    box-shadow: 0 12px 0 rgba(5, 7, 12, 0.55);
  }

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

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

  .site-nav__link {
    padding: 15px 4px;
    font-size: 17px;
    border-bottom: 1px solid rgba(110, 114, 120, 0.3);
  }

  .site-nav__link::after { bottom: 0; height: 3px; }

  .site-nav__item:last-child .site-nav__link { border-bottom: 0; }

  .nav-toggle { display: inline-flex; }
}

@media (max-width: 780px) {
  body { padding-bottom: 72px; }
  .mobile-dock { display: grid; }
}

@media (max-width: 640px) {
  .grid--12,
  .grid--3,
  .grid--2 { grid-template-columns: minmax(0, 1fr); }

  .section-head {
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
    gap: 10px;
  }

  .index-list__item {
    grid-template-columns: auto minmax(0, 1fr);
    row-gap: 4px;
  }

  .index-list__meta { grid-column: 2; }
}

@media (max-width: 560px) {
  .brand__line { display: none; }
  .brand__mark { width: 34px; height: 34px; font-size: 12px; box-shadow: 3px 3px 0 var(--c-ink); }
  .brand__name { font-size: 16px; }
  .site-header__cta .btn { padding: 8px 12px; font-size: 13px; }
  .footer-contact li { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .footer-nav { grid-template-columns: minmax(0, 1fr); }
  .footer-status { font-size: 11px; gap: 6px 18px; }
}

/* ---------- 16 Reduced Motion ---------- */
@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-reveal [data-reveal],
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .btn:hover,
  .card:hover,
  .index-list__item:hover,
  .nav-toggle[aria-expanded="true"],
  .brand:hover .brand__mark,
  .footer-nav__link:hover { transform: none; }
}