/* =========================================================
   乐竞体育站 · 共享样式 /assets/site.css
   深夜数据指挥室 · 堆叠切角面板 · 荧光青锚点
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 120px;
}

body { min-height: 100%; }

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

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

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

h1, h2, h3, h4, h5, h6, p, figure, blockquote { margin: 0; }

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

a { color: inherit; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #04120E;
  --ink-800: #0A201A;
  --ink-700: #123128;
  --line-600: #1E4A3C;

  --neon-400: #35F2D0;
  --neon-300: #7FFBE4;
  --amber-400: #F5B942;
  --red-500: #E23E4A;

  --text-100: #E9F5F1;
  --text-200: #C6D9D3;
  --text-300: #8FA8A1;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui,
    -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "DejaVu Sans Mono",
    "Courier New", monospace;

  --cut: 22px;
  --container: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --dur: 200ms;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background-color: var(--ink-900);
  background-image:
    radial-gradient(1100px 560px at 84% -12%, rgba(53, 242, 208, 0.10), transparent 62%),
    radial-gradient(820px 480px at 4% 108%, rgba(245, 185, 66, 0.07), transparent 60%);
  background-repeat: no-repeat;
  background-attachment: fixed;
  color: var(--text-100);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text-100);
}

h1 { font-size: clamp(28px, 4.4vw, 48px); }
h2 { font-size: clamp(22px, 2.8vw, 34px); }
h3 { font-size: clamp(18px, 2vw, 22px); }
h4 { font-size: 16.5px; }

p { color: var(--text-200); }

strong { color: var(--text-100); }

::selection {
  background: var(--neon-400);
  color: var(--ink-900);
}

:focus-visible {
  outline: 2px solid var(--neon-400);
  outline-offset: 3px;
  border-radius: 0;
}

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 4. 跳至主要内容 ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: 10px 18px;
  background: var(--neon-400);
  color: var(--ink-900);
  font-weight: 700;
  text-decoration: none;
}

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

/* ---------- 5. 布局容器与网格 ---------- */
.container {
  width: min(var(--container), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

.section { padding: clamp(38px, 6vw, 80px) 0; }
.section--tight { padding: clamp(22px, 3.4vw, 44px) 0; }

.grid {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--7-5 { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.grid--8-4 { grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); }
.grid--5-7 { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }

@media (max-width: 900px) {
  .grid--2, .grid--3, .grid--4,
  .grid--7-5, .grid--8-4, .grid--5-7 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ---------- 6. 章节头 ---------- */
.section-head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 8px 20px;
  padding-bottom: 14px;
  margin-bottom: clamp(18px, 3vw, 30px);
  border-bottom: 1px solid var(--line-600);
}

.section-head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 72px;
  height: 2px;
  background: var(--neon-400);
}

.section-head__index {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--neon-400);
}

.section-head__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 30px);
  font-weight: 800;
}

.section-head__note {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--text-300);
}

.rule-diagonal {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, transparent, var(--line-600) 14%, var(--line-600) 86%, transparent);
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.75em 1.25em;
  border: 1px solid var(--line-600);
  background: transparent;
  color: var(--text-100);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  transition:
    background var(--dur) var(--ease),
    color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.btn--primary {
  background: var(--neon-400);
  border-color: var(--neon-400);
  color: var(--ink-900);
}

.btn--primary:hover {
  background: var(--neon-300);
  border-color: var(--neon-300);
}

.btn--ghost { color: var(--text-100); }

.btn--ghost:hover {
  border-color: var(--neon-400);
  color: var(--neon-400);
  background: rgba(53, 242, 208, 0.06);
}

.btn--amber {
  border-color: rgba(245, 185, 66, 0.6);
  color: var(--amber-400);
}

.btn--amber:hover {
  background: rgba(245, 185, 66, 0.12);
  border-color: var(--amber-400);
}

.btn--sm { padding: 0.5em 0.9em; font-size: 12.5px; }

.btn--block { width: 100%; }

.btn[disabled] { opacity: 0.45; cursor: not-allowed; }

/* ---------- 8. 芯片与标签 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border: 1px solid var(--line-600);
  background: rgba(18, 49, 40, 0.55);
  color: var(--text-200);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.chip:hover {
  color: var(--neon-400);
  border-color: var(--neon-400);
  background: rgba(53, 242, 208, 0.08);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  padding: 2px 8px;
  border: 1px solid var(--line-600);
  background: rgba(18, 49, 40, 0.6);
  color: var(--text-200);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.tag--cyan { color: var(--neon-400); border-color: rgba(53, 242, 208, 0.5); }
.tag--amber { color: var(--amber-400); border-color: rgba(245, 185, 66, 0.5); }
.tag--red { color: var(--red-500); border-color: rgba(226, 62, 74, 0.55); }

.tag--live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: tagPulse 1.8s ease-in-out infinite;
}

@keyframes tagPulse {
  50% { opacity: 0.2; }
}

/* ---------- 9. 面板与卡片 ---------- */
.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--ink-800);
  clip-path: polygon(
    0 0,
    calc(100% - var(--cut)) 0,
    100% var(--cut),
    100% 100%,
    var(--cut) 100%,
    0 calc(100% - var(--cut))
  );
}

.panel--edge { background: var(--ink-700); }

.panel--flat {
  clip-path: none;
  border: 1px solid var(--line-600);
  background: var(--ink-800);
}

.card {
  position: relative;
  display: block;
  padding: clamp(16px, 2vw, 24px);
  background: var(--ink-800);
  border: 1px solid var(--line-600);
  color: inherit;
  text-decoration: none;
  transition:
    transform var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.card:hover,
.card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--neon-400);
  background: var(--ink-700);
}

.card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.card__index {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--neon-400);
}

.card__title {
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 800;
  color: var(--text-100);
}

.card__meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-300);
}

.card__text {
  margin: 0;
  font-size: 14px;
  color: var(--text-200);
}

/* ---------- 10. 数据组件 ---------- */
.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text-100);
}

.stat__value--cyan { color: var(--neon-400); }
.stat__value--amber { color: var(--amber-400); }
.stat__value--red { color: var(--red-500); }

.stat__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--text-300);
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line-600);
  background: var(--ink-800);
}

.data-table {
  min-width: 520px;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid rgba(30, 74, 60, 0.6);
  color: var(--text-200);
}

.data-table thead th {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-300);
  border-bottom-color: var(--line-600);
  background: rgba(18, 49, 40, 0.55);
}

.data-table tbody tr:nth-child(even) { background: rgba(18, 49, 40, 0.28); }
.data-table tbody tr:hover { background: var(--ink-700); }

.data-table .num,
.data-table td.num,
.data-table th.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.data-table td strong,
.data-table .is-top { color: var(--amber-400); }

/* ---------- 11. 面包屑与正文 ---------- */
.breadcrumb {
  padding: 14px 0 2px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--text-300);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.breadcrumb li { display: inline-flex; align-items: center; }

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line-600);
}

.breadcrumb a {
  color: var(--text-200);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.breadcrumb a:hover {
  color: var(--neon-400);
  border-bottom-color: rgba(53, 242, 208, 0.5);
}

.breadcrumb [aria-current="page"] { color: var(--text-100); }

.prose {
  max-width: 74ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-200);
}

.prose p + p { margin-top: 1em; }

.prose h2 {
  margin: 1.6em 0 0.6em;
  font-size: clamp(20px, 2.4vw, 26px);
}

.prose h3 {
  margin: 1.4em 0 0.5em;
  font-size: 17px;
}

.prose ul,
.prose ol {
  margin: 0.8em 0;
  padding-left: 1.35em;
  list-style: disc;
}

.prose ol { list-style: decimal; }
.prose li { margin: 0.35em 0; }
.prose a { color: var(--neon-400); text-decoration: none; border-bottom: 1px solid rgba(53, 242, 208, 0.35); }
.prose a:hover { border-bottom-color: var(--neon-400); }

/* ---------- 12. 图片容器基础规则 ---------- */
.media { position: relative; margin: 0; }

.media__frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--ink-800);
  border: 1px solid var(--line-600);
}

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

.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.media__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(53, 242, 208, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(53, 242, 208, 0.14) 1px, transparent 1px);
  background-size: 46px 46px;
  opacity: 0.45;
}

.media__placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 12px;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(30, 74, 60, 0.6) 0 1px,
    transparent 1px 13px
  );
  color: var(--text-300);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-align: center;
}

.media__caption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-300);
}

/* ---------- 13. 显现动效 ---------- */
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.34s var(--ease), transform 0.34s var(--ease);
}

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

/* ---------- 14. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: linear-gradient(180deg, rgba(4, 18, 14, 0.97), rgba(4, 18, 14, 0.9));
  border-bottom: 1px solid var(--line-600);
  backdrop-filter: blur(10px);
}

.site-header__inner {
  position: relative;
  width: min(var(--container), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 18px 0 12px;
  transition: padding 0.24s var(--ease), gap 0.24s var(--ease);
}

.site-header__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-100);
}

.brand__mark {
  padding: 3px 6px;
  border: 1px solid rgba(53, 242, 208, 0.6);
  color: var(--neon-400);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  line-height: 1;
}

.brand__name {
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 800;
  letter-spacing: 0.1em;
  line-height: 1.1;
  transition: color var(--dur) var(--ease);
}

.brand:hover .brand__name { color: var(--neon-300); }

.brand__short {
  display: none;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.brand__line {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--text-300);
}

.site-header__strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 18px;
  width: 100%;
  padding: 7px 0;
  border-top: 1px solid rgba(30, 74, 60, 0.55);
  border-bottom: 1px solid rgba(30, 74, 60, 0.55);
}

.site-header__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--text-300);
  text-align: center;
}

.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.site-header__nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border: 1px solid var(--line-600);
  background: var(--ink-700);
  color: var(--text-100);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 16px;
}

.nav-toggle__bars i {
  display: block;
  height: 2px;
  background: currentColor;
  transition: opacity var(--dur) var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0.25; }

.nav-toggle__label { white-space: nowrap; }

.site-nav { width: 100%; }

.site-nav__list {
  counter-reset: navIndex;
  display: flex;
  justify-content: center;
  gap: clamp(6px, 2vw, 30px);
  width: 100%;
  overflow-x: auto;
  scrollbar-width: thin;
}

.site-nav__list > li { counter-increment: navIndex; }

.site-nav__link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 4px 8px;
  border-bottom: 2px solid transparent;
  color: var(--text-200);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.site-nav__link::before {
  content: "0" counter(navIndex);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0;
  color: var(--text-300);
  align-self: flex-start;
  transition: color var(--dur) var(--ease);
}

.site-nav__link:hover { color: var(--neon-300); }
.site-nav__link:hover::before { color: var(--neon-300); }

.site-nav__link[aria-current="page"] {
  color: var(--neon-400);
  border-bottom-color: var(--neon-400);
}

.site-nav__link[aria-current="page"]::before { color: var(--neon-400); }

.site-header__progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--neon-400), var(--amber-400));
  transition: transform 0.12s linear;
}

/* 收缩态：只保留品牌缩写与栏目索引 */
.site-header[data-condensed] .site-header__inner {
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 7px 0;
}

.site-header[data-condensed] .site-header__brand {
  flex-direction: row;
  align-items: center;
  gap: 10px;
}

.site-header[data-condensed] .brand__name,
.site-header[data-condensed] .brand__line,
.site-header[data-condensed] .site-header__strip {
  display: none;
}

.site-header[data-condensed] .brand__short { display: inline; }

.site-header[data-condensed] .site-header__nav { width: auto; }

.site-header[data-condensed] .site-nav__list {
  justify-content: flex-end;
  gap: clamp(4px, 1.4vw, 18px);
}

.site-header[data-condensed] .site-nav__link {
  padding: 6px 2px;
  font-size: 13px;
}

.site-header[data-condensed] .site-nav__link::before { display: none; }

/* ---------- 15. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 110px);
  border-top: 1px solid var(--line-600);
  background: linear-gradient(180deg, rgba(4, 18, 14, 0) 0%, var(--ink-800) 100%);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(240px, 40%);
  height: 2px;
  background: linear-gradient(90deg, var(--neon-400), transparent);
}

.site-footer__inner {
  width: min(var(--container), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
  padding: clamp(32px, 5vw, 64px) 0 22px;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 44px);
}

.site-footer__name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--text-100);
}

.site-footer__tag {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-300);
}

.site-footer__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.footer-col__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: var(--neon-400);
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col__link {
  display: inline-block;
  font-size: 14px;
  color: var(--text-200);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.footer-col__link:hover {
  color: var(--neon-300);
  border-bottom-color: rgba(53, 242, 208, 0.5);
}

.site-footer__contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 10px 24px;
  margin-top: clamp(24px, 4vw, 40px);
  padding-top: 20px;
  border-top: 1px solid rgba(30, 74, 60, 0.7);
}

.site-footer__contact-item {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  font-size: 13.5px;
}

.site-footer__label {
  min-width: 62px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-300);
  line-height: 1.9;
}

.site-footer__value {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-100);
  word-break: break-all;
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid rgba(30, 74, 60, 0.7);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--text-300);
}

.site-footer__copy,
.site-footer__icp { margin: 0; }

/* ---------- 16. 响应式：平板与手机 ---------- */
@media (max-width: 900px) {
  .site-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 860px) {
  html { scroll-padding-top: 90px; }

  .site-header__inner { gap: 8px; padding: 12px 0 10px; }

  .brand__name { font-size: 24px; }
  .brand__line { letter-spacing: 0.2em; }

  .site-header__strip {
    flex-direction: column;
    gap: 6px;
    padding: 8px 0;
  }

  .site-header__note { font-size: 11px; letter-spacing: 0.06em; }

  .site-header__nav {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }

  .nav-toggle {
    display: inline-flex;
    width: 100%;
    justify-content: space-between;
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 70;
    display: none;
    padding: 6px 0 10px;
    background: var(--ink-800);
    border-top: 1px solid var(--line-600);
    border-bottom: 1px solid var(--line-600);
    box-shadow: 0 26px 44px -26px rgba(0, 0, 0, 0.95);
  }

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

  .site-nav[data-open] .site-nav__list {
    flex-direction: column;
    gap: 0;
    justify-content: flex-start;
    overflow: visible;
  }

  .site-nav[data-open] .site-nav__link {
    justify-content: flex-start;
    gap: 12px;
    padding: 12px 10px;
    border-bottom: 1px solid rgba(30, 74, 60, 0.5);
    border-left: 2px solid transparent;
  }

  .site-nav[data-open] .site-nav__list > li:last-child .site-nav__link { border-bottom: 0; }

  .site-nav[data-open] .site-nav__link[aria-current="page"] {
    border-bottom-color: rgba(30, 74, 60, 0.5);
    border-left-color: var(--neon-400);
    background: rgba(53, 242, 208, 0.06);
  }

  .site-nav[data-open] .site-nav__list > li:last-child .site-nav__link[aria-current="page"] {
    border-bottom-color: transparent;
  }

  /* 收缩态在移动端并排显示 */
  .site-header[data-condensed] .site-header__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
    gap: 12px;
  }

  .site-header[data-condensed] .site-header__nav {
    width: auto;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
  }

  .site-header[data-condensed] .nav-toggle {
    width: auto;
    justify-content: flex-start;
    padding: 8px 12px;
  }

  .site-header[data-condensed] .site-nav { top: calc(100% + 10px); }
}

@media (max-width: 620px) {
  .site-footer__grid { grid-template-columns: minmax(0, 1fr); }
  .site-footer__legal { flex-direction: column; align-items: flex-start; }
  .section-head__note { margin-left: 0; }
}

/* ---------- 17. 减少动态效果 ---------- */
@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;
  }

  .has-js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .card:hover,
  .card:focus-visible { transform: none; }

  .site-header__progress { transition: none; }
}