/* ============================================================
   爱游戏体育主站 · 共享样式表 /assets/site.css
   深夜数据室 × 球迷看台：冷底暖点，玻璃层 + 实色层
   ============================================================ */

:root {
  --ink: #0B2B24;
  --char: #111312;
  --moss: #3E5C4B;
  --bone: #F3EFE6;
  --rock: #8A8F8B;
  --cyan: #35F0B6;
  --violet: #8A5CFF;
  --kapok: #E2542A;
  --clay: #B96B4A;
  --muted: #6E7573;
  --muted-dark: #A8B0AC;
  --amber: #E8B33D;

  --line: rgba(243, 239, 230, 0.14);
  --line-strong: rgba(243, 239, 230, 0.28);
  --glass: rgba(243, 239, 230, 0.055);
  --glass-strong: rgba(243, 239, 230, 0.10);

  --font-serif: "Source Han Serif SC", "Songti SC", "STSong", "SimSun", Georgia, "Times New Roman", serif;
  --font-sans: "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --step-120: clamp(56px, 9vw, 120px);
  --step-72: clamp(40px, 6vw, 72px);
  --step-44: clamp(29px, 4.2vw, 44px);
  --step-28: clamp(23px, 2.6vw, 28px);
  --step-20: 20px;
  --step-17: 17px;
  --step-15: 15px;
  --step-13: 13px;

  --shell: min(1240px, 100% - 2 * clamp(16px, 4vw, 48px));
  --radius: 14px;
  --radius-sm: 8px;
  --pad-section: clamp(48px, 7vw, 96px);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

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

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

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

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

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

hr { border: 0; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- base ---------- */
body {
  background-color: var(--ink);
  background-image:
    radial-gradient(1200px 620px at 10% -12%, rgba(53, 240, 182, 0.07), transparent 62%),
    radial-gradient(920px 520px at 92% 6%, rgba(138, 92, 255, 0.08), transparent 62%),
    radial-gradient(780px 460px at 74% 104%, rgba(226, 84, 42, 0.06), transparent 62%);
  background-repeat: no-repeat;
  color: var(--bone);
  font-family: var(--font-sans);
  font-size: var(--step-17);
  font-weight: 400;
  line-height: 1.85;
  letter-spacing: 0.01em;
  min-height: 100vh;
}

::selection { background: var(--cyan); color: #04231b; }

/* ---------- skip link ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  transform: translateY(-180%);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: var(--cyan);
  color: #04231b;
  font-size: var(--step-15);
  font-weight: 700;
  letter-spacing: 0.06em;
  transition: transform 0.18s var(--ease);
}

.skip-link:focus { transform: translateY(0); }

/* ---------- layout shells ---------- */
.shell {
  width: var(--shell);
  margin-inline: auto;
}

.section { padding-block: var(--pad-section); }

.section--tight { padding-block: clamp(28px, 4vw, 52px); }

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

.section--bone .eyebrow,
.section--bone .section__kicker { color: var(--clay); }

.section__kicker {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--clay);
}

.section__title {
  font-family: var(--font-serif);
  font-size: var(--step-44);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--cyan);
  text-transform: uppercase;
}

.lead {
  max-width: 44ch;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.8;
  color: var(--muted-dark);
}

.section--bone .lead { color: #4a524e; }

.divider {
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), rgba(53, 240, 182, 0) 62%);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- grid ---------- */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.2vw, 32px);
}

.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: 1 / -1; }

/* ---------- typography block ---------- */
.prose {
  max-width: 40em;
  font-size: var(--step-17);
  line-height: 1.85;
}

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

.prose h2,
.prose h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin-top: 1.7em;
}

.prose h2 { font-size: var(--step-28); }
.prose h3 { font-size: var(--step-20); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: var(--step-15);
  font-weight: 600;
  letter-spacing: 0.08em;
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
              border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.btn--primary {
  background: var(--cyan);
  color: #04231b;
}

.btn--primary:hover { background: #5cf7c9; transform: translateY(-1px); }

.btn--ghost {
  border-color: var(--line-strong);
  background: var(--glass);
  color: var(--bone);
}

.btn--ghost:hover {
  border-color: rgba(53, 240, 182, 0.6);
  color: var(--cyan);
}

.btn--clay {
  border-color: rgba(185, 107, 74, 0.55);
  color: var(--clay);
}

.btn--clay:hover {
  background: rgba(185, 107, 74, 0.14);
  color: #d98a68;
}

/* ---------- breadcrumbs ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--step-13);
  color: var(--rock);
}

.crumbs__item { color: var(--rock); }
.crumbs__item a { color: var(--muted-dark); }
.crumbs__item a:hover { color: var(--cyan); }
.crumbs__sep { color: rgba(138, 143, 139, 0.5); }
.crumbs__item[aria-current="page"] { color: var(--cyan); }

.section--bone .crumbs,
.section--bone .crumbs__item { color: #6E7573; }
.section--bone .crumbs__item a { color: #3E5C4B; }

/* ---------- tags ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted-dark);
}

.tag--sh {
  color: #b9a1ff;
  border-color: rgba(138, 92, 255, 0.45);
  background: rgba(138, 92, 255, 0.12);
}

.tag--gz {
  color: #f09170;
  border-color: rgba(226, 84, 42, 0.45);
  background: rgba(226, 84, 42, 0.12);
}

.tag--data {
  color: var(--cyan);
  border-color: rgba(53, 240, 182, 0.4);
  background: rgba(53, 240, 182, 0.08);
}

/* ---------- glass & panel ---------- */
.glass {
  background: var(--glass);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  backdrop-filter: blur(14px) saturate(150%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.panel {
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(62, 92, 75, 0.34), rgba(17, 19, 18, 0.52));
}

.panel--bone {
  background: var(--bone);
  color: var(--char);
  border-color: rgba(17, 19, 18, 0.12);
}

/* ---------- numbers ---------- */
.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat__value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--step-72);
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--bone);
  text-shadow: 0 0 22px rgba(53, 240, 182, 0.28);
  font-variant-numeric: tabular-nums;
}

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

.stat__unit {
  margin-left: 0.25em;
  font-size: 0.36em;
  letter-spacing: 0;
  color: var(--cyan);
}

.stat__label {
  font-size: var(--step-13);
  letter-spacing: 0.2em;
  color: var(--rock);
}

.section--bone .stat__value { color: var(--ink); text-shadow: none; }
.section--bone .stat__value--cyan { color: #0f8f6b; }
.section--bone .stat__label { color: #6E7573; }

/* ---------- research board ---------- */
.board {
  position: relative;
  padding: clamp(20px, 2.6vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(243, 239, 230, 0.055), rgba(243, 239, 230, 0.02));
}

.board::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  border-radius: var(--radius) 0 0 var(--radius);
  background: linear-gradient(180deg, var(--cyan), rgba(53, 240, 182, 0));
}

.board--violet::before { background: linear-gradient(180deg, var(--violet), rgba(138, 92, 255, 0)); }
.board--kapok::before { background: linear-gradient(180deg, var(--kapok), rgba(226, 84, 42, 0)); }

.board__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

.board__title {
  font-family: var(--font-serif);
  font-size: var(--step-28);
  font-weight: 700;
  line-height: 1.3;
}

.board__code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--clay);
}

.board__summary {
  max-width: 56ch;
  font-size: var(--step-15);
  line-height: 1.9;
  color: var(--muted-dark);
}

.board__metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: 18px;
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.metric__value {
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.metric__label {
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--rock);
}

.board__terms {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.term {
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--glass);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted-dark);
}

.board__more {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: var(--step-13);
  color: var(--rock);
}

/* ---------- tabs ---------- */
.tabs { margin-top: 8px; }

.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  width: fit-content;
  max-width: 100%;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--glass);
}

.tab {
  padding: 9px 18px;
  border-radius: 999px;
  font-size: var(--step-15);
  letter-spacing: 0.1em;
  color: var(--muted-dark);
  transition: background 0.22s var(--ease), color 0.22s var(--ease);
}

.tab:hover { color: var(--bone); }

.tab[aria-selected="true"] {
  background: var(--cyan);
  color: #04231b;
  font-weight: 700;
}

.tabs__panel { padding-top: 24px; }
.tabs__panel[hidden] { display: none; }

/* ---------- segmented control ---------- */
.segmented {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--glass);
}

.segmented__item {
  padding: 7px 14px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted-dark);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.segmented__item:hover { color: var(--bone); }

.segmented__item.is-active {
  background: rgba(53, 240, 182, 0.14);
  color: var(--cyan);
}

/* ---------- timeline ---------- */
.timeline {
  position: relative;
  padding-left: 26px;
  border-left: 1px solid var(--line);
}

.timeline__item {
  position: relative;
  padding-bottom: 26px;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 9px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--clay);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.timeline__item.is-in::before {
  border-color: var(--cyan);
  box-shadow: 0 0 12px rgba(53, 240, 182, 0.5);
}

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

.timeline__title {
  margin-top: 4px;
  font-family: var(--font-serif);
  font-size: var(--step-20);
  font-weight: 700;
  line-height: 1.4;
}

.timeline__text {
  max-width: 52ch;
  margin-top: 6px;
  font-size: var(--step-15);
  line-height: 1.85;
  color: var(--muted-dark);
}

.section--bone .timeline { border-left-color: rgba(17, 19, 18, 0.14); }
.section--bone .timeline__item::before { background: var(--bone); }
.section--bone .timeline__item.is-in::before { border-color: #0f8f6b; box-shadow: none; }
.section--bone .timeline__label { color: #6E7573; }
.section--bone .timeline__text { color: #4a524e; }

/* ---------- media containers ---------- */
.media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--char);
  background-repeat: repeat, no-repeat;
}

.media--tall { aspect-ratio: 4 / 5; }
.media--square { aspect-ratio: 1 / 1; }

.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media--field {
  background-image:
    repeating-linear-gradient(90deg,
      rgba(62, 92, 75, 0.55) 0 26px,
      rgba(50, 76, 62, 0.55) 26px 52px),
    linear-gradient(180deg, rgba(11, 43, 36, 0.15), rgba(11, 43, 36, 0.8));
  background-size: 52px 100%, 100% 100%;
}

.media--crowd {
  background-image:
    radial-gradient(circle at 20% 72%, rgba(138, 92, 255, 0.38), transparent 46%),
    radial-gradient(circle at 78% 62%, rgba(226, 84, 42, 0.34), transparent 46%),
    repeating-radial-gradient(circle at 50% 122%,
      rgba(243, 239, 230, 0.09) 0 3px,
      rgba(243, 239, 230, 0) 3px 13px),
    linear-gradient(180deg, rgba(17, 19, 18, 0.92), rgba(11, 43, 36, 0.92));
  background-size: 100% 100%, 100% 100%, 100% 100%, 100% 100%;
}

.media--board {
  background-image:
    linear-gradient(rgba(53, 240, 182, 0.16) 1px, rgba(53, 240, 182, 0) 1px),
    linear-gradient(90deg, rgba(53, 240, 182, 0.16) 1px, rgba(53, 240, 182, 0) 1px),
    linear-gradient(180deg, rgba(11, 43, 36, 0.95), rgba(17, 19, 18, 0.95));
  background-size: 36px 36px, 36px 36px, 100% 100%;
}

.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 14px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted-dark);
  background: linear-gradient(180deg, rgba(17, 19, 18, 0), rgba(17, 19, 18, 0.88));
}

/* ---------- motion / reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  color: var(--bone);
  background: rgba(11, 43, 36, 0.82);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid var(--line);
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  pointer-events: none;
  background: transparent;
}

.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 68%, var(--kapok));
  transition: transform 0.12s linear;
}

/* --- masthead --- */
.masthead {
  width: var(--shell);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  grid-template-areas: "utility brand meta";
  align-items: center;
  column-gap: 18px;
  padding-block: clamp(14px, 2vw, 22px) clamp(10px, 1.6vw, 16px);
  transition: padding 0.28s var(--ease);
}

.masthead__utility {
  grid-area: utility;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.masthead__brand {
  grid-area: brand;
  justify-self: center;
  text-align: center;
  min-width: 0;
}

.masthead__meta {
  grid-area: meta;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  min-width: 0;
}

/* --- brand --- */
.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
}

.brand__wordmark {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.15;
  letter-spacing: 0.14em;
  color: var(--bone);
  transition: color 0.2s var(--ease);
}

.brand:hover .brand__wordmark { color: #ffffff; }

.brand__tagline {
  font-size: 12px;
  line-height: 1;
  letter-spacing: 0.28em;
  color: var(--muted-dark);
}

/* --- utility link --- */
.utility-link {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: var(--step-13);
  letter-spacing: 0.16em;
  color: var(--muted-dark);
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.utility-link:hover {
  color: var(--cyan);
  border-color: rgba(53, 240, 182, 0.5);
  background: rgba(53, 240, 182, 0.07);
}

/* --- season switch --- */
.season-switch { position: relative; }

.season-switch__button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--glass);
  font-size: var(--step-13);
  letter-spacing: 0.08em;
  color: var(--muted-dark);
  white-space: nowrap;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.season-switch__button:hover,
.season-switch__button[aria-expanded="true"] {
  border-color: rgba(53, 240, 182, 0.5);
  background: rgba(53, 240, 182, 0.07);
}

.season-switch__label { color: var(--rock); }

.season-switch__value {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
}

.season-switch__caret {
  width: 6px;
  height: 6px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg) translate(-1px, -1px);
  transition: transform 0.22s var(--ease);
}

.season-switch__button[aria-expanded="true"] .season-switch__caret {
  transform: rotate(-135deg) translate(-2px, -2px);
}

.season-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  z-index: 120;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 236px;
  padding: 6px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(17, 19, 18, 0.97);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5);
}

.season-menu[hidden] { display: none; }

.season-menu__item {
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted-dark);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.season-menu__item:hover {
  background: var(--glass-strong);
  color: var(--bone);
}

.season-menu__item.is-active {
  background: rgba(53, 240, 182, 0.1);
  color: var(--cyan);
}

/* --- review badge --- */
.review-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid rgba(53, 240, 182, 0.32);
  border-radius: 999px;
  background: var(--glass);
  font-size: var(--step-13);
  letter-spacing: 0.06em;
  color: var(--rock);
  white-space: nowrap;
}

.review-badge__pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  animation: reviewPulse 2.4s infinite;
}

.review-badge__month {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
}

.review-badge__note { color: var(--rock); }

@keyframes reviewPulse {
  0% { box-shadow: 0 0 0 0 rgba(53, 240, 182, 0.55); }
  70% { box-shadow: 0 0 0 9px rgba(53, 240, 182, 0); }
  100% { box-shadow: 0 0 0 0 rgba(53, 240, 182, 0); }
}

/* --- nav toggle --- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--glass);
  font-size: var(--step-13);
  letter-spacing: 0.2em;
  color: var(--bone);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.nav-toggle:hover {
  border-color: rgba(53, 240, 182, 0.55);
  background: rgba(53, 240, 182, 0.07);
}

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

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.22s var(--ease), top 0.22s var(--ease);
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { top: 8px; }

.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);
}

.nav-toggle__text { line-height: 1; }

/* --- primary nav --- */
.primary-nav {
  position: relative;
  width: var(--shell);
  margin-inline: auto;
}

.primary-nav__list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(10px, 2.6vw, 42px);
  padding-bottom: 12px;
}

.primary-nav__item { position: relative; }

.primary-nav__link {
  position: relative;
  display: inline-block;
  padding: 6px 2px;
  font-size: var(--step-15);
  letter-spacing: 0.22em;
  color: var(--muted-dark);
  transition: color 0.2s var(--ease);
}

.primary-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1.5px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.24s var(--ease);
}

.primary-nav__link:hover { color: var(--bone); }
.primary-nav__link:hover::after { transform: scaleX(1); }

.primary-nav__link[aria-current="page"] { color: var(--cyan); }
.primary-nav__link[aria-current="page"]::after { transform: scaleX(1); }

/* --- season scale rule --- */
.nav-scale {
  position: relative;
  width: var(--shell);
  margin-inline: auto;
  height: 9px;
}

.nav-scale::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg,
    rgba(243, 239, 230, 0) 0%,
    var(--line-strong) 12%,
    var(--line-strong) 88%,
    rgba(243, 239, 230, 0) 100%);
}

.nav-scale__tick {
  position: absolute;
  top: 0;
  width: 2px;
  height: 6px;
  transform: translateY(-2px);
  background: var(--clay);
  opacity: 0.75;
}

.nav-scale__tick:nth-child(1) { left: 8%; }
.nav-scale__tick:nth-child(2) { left: 26%; }
.nav-scale__tick:nth-child(3) { left: 50%; height: 8px; background: var(--cyan); }
.nav-scale__tick:nth-child(4) { left: 74%; }
.nav-scale__tick:nth-child(5) { left: 92%; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 9vw, 120px);
  background: var(--char);
  border-top: 1px solid var(--line);
  color: var(--rock);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 48%, var(--kapok));
  opacity: 0.62;
}

.footer__inner {
  width: var(--shell);
  margin-inline: auto;
  display: grid;
  grid-template-columns:
    minmax(210px, 1.5fr)
    repeat(3, minmax(132px, 1fr))
    minmax(238px, 1.6fr);
  gap: clamp(20px, 2.6vw, 40px);
  padding-block: clamp(40px, 6vw, 72px) clamp(28px, 4vw, 44px);
}

.footer__brand { min-width: 0; }

.brand--footer {
  align-items: flex-start;
  gap: 8px;
}

.brand--footer .brand__wordmark { font-size: 22px; letter-spacing: 0.12em; }

.footer__tagline {
  font-size: 12px;
  line-height: 1;
  letter-spacing: 0.24em;
  color: var(--rock);
}

.footer__note {
  max-width: 32ch;
  margin-top: 14px;
  font-size: var(--step-13);
  line-height: 1.95;
  color: var(--muted);
}

.footer__col { min-width: 0; }

.footer__col-title {
  position: relative;
  margin-bottom: 14px;
  padding-bottom: 10px;
  font-family: var(--font-serif);
  font-size: var(--step-15);
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--bone);
}

.footer__col-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 26px;
  height: 1.5px;
  background: var(--cyan);
  opacity: 0.7;
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer__link {
  display: inline-block;
  font-size: var(--step-15);
  color: var(--muted-dark);
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.footer__link:hover {
  color: var(--cyan);
  padding-left: 6px;
}

.footer__contact { min-width: 0; }

.footer__contact-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__contact-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer__contact-label {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--rock);
}

.footer__contact-value {
  font-family: var(--font-mono);
  font-size: var(--step-13);
  line-height: 1.75;
  color: var(--bone);
  overflow-wrap: anywhere;
}

.footer__contact-value--text {
  font-family: var(--font-sans);
  font-size: var(--step-15);
  color: var(--muted-dark);
}

.footer__legal {
  width: var(--shell);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 26px;
  padding-block: 18px 28px;
  border-top: 1px solid rgba(243, 239, 230, 0.1);
  font-size: var(--step-13);
  color: var(--rock);
}

.footer__legal-line { margin: 0; }
.footer__legal-line--muted { color: var(--muted); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1080px) {
  .footer__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  :root { font-size: 16px; }

  .grid-12 > [class*="col-"] { grid-column: 1 / -1; }

  .masthead {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "brand meta"
      "utility utility";
    row-gap: 10px;
    column-gap: 12px;
    padding-block: 12px 10px;
  }

  .masthead__brand { justify-self: start; text-align: left; }
  .masthead__meta { justify-self: end; }
  .masthead__utility { justify-content: flex-start; flex-wrap: wrap; }

  .brand { align-items: flex-start; }

  .nav-toggle { display: inline-flex; }
  .nav-scale { display: none; }

  .primary-nav__list {
    display: none;
    position: absolute;
    top: 4px;
    left: 0;
    right: 0;
    z-index: 110;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 10px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    background: rgba(17, 19, 18, 0.97);
    box-shadow: 0 22px 48px rgba(0, 0, 0, 0.5);
  }

  .primary-nav[data-open="true"] .primary-nav__list { display: flex; }

  .primary-nav__link {
    display: block;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    letter-spacing: 0.14em;
  }

  .primary-nav__link:hover { background: var(--glass-strong); }
  .primary-nav__link::after { display: none; }
}

@media (max-width: 600px) {
  .footer__inner { grid-template-columns: minmax(0, 1fr); }
  .brand__tagline { display: none; }
  .review-badge__note { display: none; }
  .tabs__list { border-radius: var(--radius); }
  .footer__legal { flex-direction: column; gap: 6px; }
}

/* --- desktop collapsed masthead --- */
@media (min-width: 901px) {
  .site-header[data-collapsed="true"] .masthead {
    grid-template-columns: auto 1fr auto;
    grid-template-areas: "brand utility meta";
    padding-block: 10px;
  }

  .site-header[data-collapsed="true"] .masthead__brand {
    justify-self: start;
    text-align: left;
  }

  .site-header[data-collapsed="true"] .brand {
    flex-direction: row;
    align-items: baseline;
    gap: 12px;
  }

  .site-header[data-collapsed="true"] .brand__wordmark {
    font-size: 22px;
    letter-spacing: 0.12em;
  }

  .site-header[data-collapsed="true"] .brand__tagline { font-size: 11px; }

  .site-header[data-collapsed="true"] .masthead__utility {
    grid-area: utility;
    justify-self: end;
    margin-right: 14px;
  }

  .site-header[data-collapsed="true"] .utility-link { display: none; }

  .site-header[data-collapsed="true"] .nav-toggle { display: inline-flex; }

  .site-header[data-collapsed="true"] .nav-scale { display: none; }

  .site-header[data-collapsed="true"] .primary-nav {
    position: relative;
    height: 0;
  }

  .site-header[data-collapsed="true"] .primary-nav__list {
    display: none;
    position: absolute;
    top: 6px;
    left: 0;
    right: 0;
    z-index: 110;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 10px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    background: rgba(17, 19, 18, 0.97);
    box-shadow: 0 22px 48px rgba(0, 0, 0, 0.5);
  }

  .site-header[data-collapsed="true"] [data-nav][data-open="true"] .primary-nav__list {
    display: flex;
  }

  .site-header[data-collapsed="true"] .primary-nav__link {
    display: block;
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    letter-spacing: 0.14em;
  }

  .site-header[data-collapsed="true"] .primary-nav__link:hover {
    background: var(--glass-strong);
  }

  .site-header[data-collapsed="true"] .primary-nav__link::after { display: none; }
}

/* ============================================================
   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;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .scroll-progress__bar { transition: none; }
}