/* ==========================================================================
   亿博体育台 · 共享样式表 /assets/site.css
   夜场数据观察站：深墨绿基底 + 荧光青柠数据高亮 + 琥珀金节点
   ========================================================================== */

/* ---------- 1. 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, li {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

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

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

button { background: none; border: 0; cursor: pointer; }

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

table { border-collapse: collapse; border-spacing: 0; width: 100%; }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.25; }

/* ---------- 2. Tokens ---------- */
:root {
  /* 色板 */
  --ink: #0B1F1A;
  --charcoal: #14171A;
  --slate: #26302C;
  --lime: #C6F24E;
  --lime-deep: #8FBE1F;
  --amber: #E9B44C;
  --bone: #F2F1EC;
  --paper: #FFFFFF;
  --mist: #A8B3AD;
  --coral: #FF6B5A;

  /* 线材 */
  --line: rgba(242, 241, 236, 0.14);
  --line-mid: rgba(242, 241, 236, 0.26);
  --line-strong: rgba(242, 241, 236, 0.44);
  --line-dark: rgba(11, 31, 26, 0.14);

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

  /* 尺度 */
  --wrap: 1280px;
  --wrap-wide: 1440px;
  --pad: clamp(16px, 4vw, 40px);
  --gap: clamp(16px, 2.4vw, 32px);
  --radius: 2px;

  --shadow-soft: 0 1px 0 rgba(0, 0, 0, 0.25), 0 18px 40px -30px rgba(0, 0, 0, 0.85);
  --shadow-lift: 0 2px 0 rgba(0, 0, 0, 0.3), 0 26px 52px -30px rgba(0, 0, 0, 0.95);
}

/* ---------- 3. Base typography ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink);
  background-image:
    linear-gradient(rgba(242, 241, 236, 0.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242, 241, 236, 0.032) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px;
  color: var(--bone);
  font-family: var(--font-body);
  font-size: clamp(15px, 1.05vw, 17px);
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.display {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(44px, 7vw, 108px);
  line-height: 0.94;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(22px, 2.4vw, 34px);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.28;
}

.lead {
  font-size: clamp(16px, 1.3vw, 19px);
  line-height: 1.8;
  color: var(--mist);
}

.eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.mono,
.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

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

/* ---------- 4. Focus ---------- */
:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: 1px;
}

.section--light :focus-visible {
  outline-color: var(--lime-deep);
}

/* ---------- 5. Layout containers ---------- */
.container {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.container--wide { max-width: var(--wrap-wide); }
.container--narrow { max-width: 820px; }

.section {
  padding-block: clamp(44px, 6vw, 96px);
}

.section + .section {
  border-top: 1px solid var(--line);
}

.section--light {
  --line: var(--line-dark);
  --line-mid: rgba(11, 31, 26, 0.26);
  --line-strong: rgba(11, 31, 26, 0.42);
  --mist: #5C6A64;
  background-color: var(--bone);
  color: var(--ink);
}

.section--charcoal {
  background-color: var(--charcoal);
}

#main-content { display: block; scroll-margin-top: 140px; }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-top: 16px;
  margin-bottom: clamp(20px, 2.6vw, 34px);
  border-top: 1px solid var(--line);
}

.section-head__index {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--lime);
  flex: 0 0 auto;
}

.section--light .section-head__index { color: var(--lime-deep); }

/* ---------- 6. Grids ---------- */
.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--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 55fr) minmax(0, 45fr); }

/* ---------- 7. Buttons & pills ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  border: 1px solid var(--line-mid);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--bone);
  background-color: transparent;
  transition: background-color 0.22s ease, border-color 0.22s ease, color 0.22s ease, transform 0.22s ease;
}

.btn:hover { transform: translateY(-2px); }

.btn--lime {
  background-color: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

.btn--lime:hover {
  background-color: var(--lime-deep);
  border-color: var(--lime-deep);
}

.btn--amber {
  border-color: var(--amber);
  color: var(--amber);
}

.btn--amber:hover {
  background-color: var(--amber);
  color: var(--ink);
}

.btn--ghost:hover {
  border-color: var(--lime);
  color: var(--lime);
}

.section--light .btn {
  color: var(--ink);
  border-color: var(--line-mid);
}

.section--light .btn--ghost:hover {
  border-color: var(--lime-deep);
  color: #4E7A0C;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border: 1px solid var(--line-mid);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  white-space: nowrap;
  color: var(--bone);
  transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.pill:hover { transform: translateY(-1px); }

.pill--ghost:hover {
  border-color: var(--lime);
  color: var(--lime);
}

.pill--lime {
  background-color: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

.pill--lime:hover {
  background-color: var(--lime-deep);
  border-color: var(--lime-deep);
  color: var(--ink);
}

.section--light .pill {
  color: var(--ink);
  border-color: var(--line-mid);
}

.section--light .pill--lime {
  background-color: var(--lime-deep);
  border-color: var(--lime-deep);
  color: var(--paper);
}

/* ---------- 8. Cards / stats ---------- */
.card {
  position: relative;
  padding: clamp(18px, 2vw, 26px);
  background-color: var(--charcoal);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-lift);
}

.section--light .card {
  background-color: var(--paper);
  border-color: var(--line-dark);
}

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

.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(30px, 4.4vw, 58px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--lime);
}

.section--light .stat__value { color: var(--lime-deep); }

.stat__value--amber { color: var(--amber); }

.stat__label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

/* ---------- 9. Tables ---------- */
.data-panel {
  border: 1px solid var(--line);
  background-color: rgba(20, 23, 26, 0.5);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.section--light .data-panel {
  background-color: var(--paper);
  border-color: var(--line-dark);
}

.data-panel .data-table { border: 0; min-width: 640px; }

.data-table {
  width: 100%;
  font-size: 14px;
  border: 1px solid var(--line);
}

.data-table thead th {
  padding: 12px 14px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-align: left;
  color: var(--mist);
  border-bottom: 1px solid var(--line-mid);
  white-space: nowrap;
}

.data-table tbody td {
  padding: 12px 14px;
  color: inherit;
  border-bottom: 1px solid var(--line);
}

.data-table tbody tr:nth-child(even) { background-color: var(--slate); }

.section--light .data-table tbody tr:nth-child(even) { background-color: rgba(11, 31, 26, 0.05); }

.data-table tbody tr:hover { background-color: rgba(198, 242, 78, 0.08); }

.data-table .is-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  text-align: right;
}

.data-table th.is-num { text-align: right; }

/* ---------- 10. Figures (图片容器，供页面阶段放置占位) ---------- */
.figure { margin: 0; display: block; }

.figure__media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--slate);
  background-image: linear-gradient(155deg, var(--slate) 0%, var(--charcoal) 70%, var(--ink) 100%);
  box-shadow: var(--shadow-soft);
}

.figure__media::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(242, 241, 236, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242, 241, 236, 0.07) 1px, transparent 1px);
  background-size: 44px 44px;
  transition: opacity 0.3s ease;
}

.figure__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 90px rgba(0, 0, 0, 0.55);
}

.figure__media:has(img)::before,
.figure__media:has(svg)::before { opacity: 0; }

.figure__media > img,
.figure__media > svg,
.figure__media > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure--21x9 .figure__media { aspect-ratio: 21 / 9; }
.figure--16x9 .figure__media { aspect-ratio: 16 / 9; }
.figure--3x2  .figure__media { aspect-ratio: 3 / 2; }
.figure--4x3  .figure__media { aspect-ratio: 4 / 3; }
.figure--1x1  .figure__media { aspect-ratio: 1 / 1; }

.figure__caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- 11. Breadcrumb ---------- */
.breadcrumb {
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 22px var(--pad) 0;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.breadcrumb__list li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb__list li + li::before {
  content: "/";
  color: var(--line-strong);
}

.breadcrumb__list a {
  color: var(--mist);
  transition: color 0.2s ease;
}

.breadcrumb__list a:hover { color: var(--lime); }

.breadcrumb__list [aria-current="page"] { color: var(--bone); }

/* ---------- 12. Reveal ---------- */
[data-reveal] { opacity: 1; transform: none; }

@media (prefers-reduced-motion: no-preference) {
  .js-ready [data-reveal] {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  .js-ready [data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 13. Header ---------- */
.skip-link {
  position: absolute;
  top: 0;
  left: 50%;
  z-index: 200;
  padding: 10px 18px;
  background-color: var(--lime);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  transform: translate(-50%, -160%);
  transition: transform 0.2s ease;
}

.skip-link:focus { transform: translate(-50%, 0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(11, 31, 26, 0.94);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--line);
  color: var(--bone);
}

.masthead {
  max-width: var(--wrap-wide);
  margin-inline: auto;
  padding: clamp(10px, 1.6vw, 18px) var(--pad) 0;
}

.masthead__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding-bottom: clamp(10px, 1.4vw, 16px);
  transition: padding-bottom 0.3s ease;
}

.masthead__cadence {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.masthead__cadence::before {
  content: "";
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--lime);
  box-shadow: 0 0 0 4px rgba(198, 242, 78, 0.14);
}

.brand {
  grid-column: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  text-align: center;
}

.brand__full {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3vw, 40px);
  line-height: 1;
  letter-spacing: 0.2em;
  text-indent: 0.2em;
  color: var(--bone);
}

.brand__short {
  display: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  line-height: 1;
  letter-spacing: 0.16em;
  color: var(--bone);
}

.brand__sub {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.brand:hover .brand__full,
.brand:hover .brand__short { color: var(--lime); }

.masthead__actions {
  grid-column: 3;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line-mid);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--bone);
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

.nav-toggle__bars {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 10px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background-color: currentColor;
  transition: transform 0.25s ease, top 0.25s ease;
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { top: 8.5px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
  top: 4px;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  top: 4px;
  transform: rotate(-45deg);
}

.site-nav {
  max-width: var(--wrap-wide);
  margin-inline: auto;
  padding: 0 var(--pad);
  border-top: 1px solid var(--line);
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(4px, 1.6vw, 28px);
}

.site-nav__list a {
  position: relative;
  display: block;
  padding: 12px 6px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--mist);
  transition: color 0.2s ease;
}

.site-nav__list a::after {
  content: "";
  position: absolute;
  left: 6px;
  right: 6px;
  bottom: 6px;
  height: 1px;
  background-color: var(--lime);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.site-nav__list a:hover { color: var(--bone); }
.site-nav__list a:hover::after { transform: scaleX(1); }

.site-nav__list a[aria-current="page"] { color: var(--lime); }
.site-nav__list a[aria-current="page"]::after { transform: scaleX(1); }

.read-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background-color: rgba(242, 241, 236, 0.06);
  pointer-events: none;
}

.read-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background-image: linear-gradient(90deg, var(--lime-deep) 0%, var(--lime) 70%, var(--amber) 100%);
  transition: width 0.08s linear;
}

/* 桌面端滚动收缩态 */
@media (min-width: 901px) {
  .site-header.is-condensed .masthead { padding-top: 6px; }

  .site-header.is-condensed .masthead__inner {
    grid-template-columns: auto minmax(0, 1fr) auto;
    padding-bottom: 6px;
  }

  .site-header.is-condensed .masthead__cadence { display: none; }

  .site-header.is-condensed .brand {
    grid-column: 1;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
    text-align: left;
  }

  .site-header.is-condensed .brand__full { display: none; }
  .site-header.is-condensed .brand__short { display: block; }
  .site-header.is-condensed .brand__sub { display: none; }
  .site-header.is-condensed .pill--ghost { display: none; }
  .site-header.is-condensed .site-nav__list a { padding: 9px 6px; }
}

/* ---------- 14. Footer ---------- */
.site-footer {
  background-color: var(--charcoal);
  border-top: 1px solid var(--line);
  color: var(--bone);
}

.footer-grid {
  max-width: var(--wrap-wide);
  margin-inline: auto;
  padding: clamp(36px, 5vw, 68px) var(--pad) clamp(24px, 3vw, 40px);
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.3fr 1fr;
  gap: clamp(28px, 3.4vw, 48px);
}

.footer-col { display: flex; flex-direction: column; }

.footer-col__title {
  margin-bottom: 16px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lime);
}

.footer-brand__mark {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.1;
  letter-spacing: 0.18em;
  color: var(--bone);
  transition: color 0.2s ease;
}

.footer-brand__mark:hover { color: var(--lime); }

.footer-brand__line {
  margin-top: 12px;
  max-width: 30ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.season-scale {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 46px;
  margin-top: 22px;
  padding-bottom: 1px;
  border-bottom: 1px solid var(--line);
}

.season-scale li {
  flex: 1 1 0;
  height: var(--h, 30%);
  min-height: 4px;
  background-image: linear-gradient(180deg, rgba(198, 242, 78, 0.55) 0%, rgba(198, 242, 78, 0.06) 100%);
  border-radius: 1px 1px 0 0;
}

.season-scale li:last-child {
  background-image: linear-gradient(180deg, var(--lime) 0%, rgba(198, 242, 78, 0.12) 100%);
}

.season-scale__caption {
  margin-top: 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.footer-links li + li { margin-top: 10px; }

.footer-links a {
  display: inline-block;
  font-size: 14px;
  color: var(--mist);
  transition: color 0.2s ease, transform 0.2s ease;
}

.footer-links a:hover {
  color: var(--lime);
  transform: translateX(3px);
}

.footer-contact li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.footer-contact li:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.footer-contact__k {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.footer-contact__v {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: var(--bone);
  word-break: break-word;
}

.footer-legal__icp {
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.footer-legal__copy {
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 15. Responsive ---------- */
@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-col--brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .masthead { padding-top: 12px; }

  .masthead__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas: "brand actions";
    align-items: center;
    gap: 10px;
    padding-bottom: 12px;
  }

  .masthead__cadence { display: none; }

  .brand {
    grid-area: brand;
    grid-column: auto;
    align-items: flex-start;
    text-align: left;
  }

  .brand__full { font-size: 24px; letter-spacing: 0.14em; }

  .masthead__actions {
    grid-area: actions;
    grid-column: auto;
  }

  .pill--ghost { display: none; }

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

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    padding: 0 var(--pad);
    background-color: var(--ink);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 44px -30px rgba(0, 0, 0, 0.95);
    transition: max-height 0.32s ease, visibility 0.32s ease;
  }

  .site-nav[data-open] {
    max-height: min(74vh, 560px);
    overflow: auto;
    visibility: visible;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0 14px;
  }

  .site-nav__list li + li { border-top: 1px solid var(--line); }

  .site-nav__list a {
    padding: 14px 2px;
    font-size: 14px;
    letter-spacing: 0.08em;
  }

  .site-nav__list a::after { display: none; }
  .site-nav__list a[aria-current="page"] { color: var(--lime); }
}

@media (max-width: 720px) {
  .grid--2,
  .grid--3,
  .grid--4,
  .grid--split { grid-template-columns: minmax(0, 1fr); }

  .section + .section { border-top-color: transparent; }
}

@media (max-width: 640px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-col--brand { grid-column: auto; }
}

/* ---------- 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;
    scroll-behavior: auto !important;
  }

  .card:hover,
  .btn:hover,
  .pill:hover,
  .footer-links a:hover { transform: none; }
}