/* ============================================================
   球盟会看台 · /assets/site.css
   0 reset / 1 tokens / 2 typography / 3 utilities / 4 buttons
   5 labels / 6 breadcrumb / 7 sections / 8 grids & cards
   9 media / 10 reveal & toc / 11 header / 12 footer / 13 motion
   ============================================================ */

/* ---------- 0. reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

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

ul, ol { list-style: none; }

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

button { font: inherit; color: inherit; }

a { color: inherit; }

/* ---------- 1. tokens ---------- */
:root {
  --ink: #0B2B26;
  --ink-deep: #071512;
  --orange: #F26B3A;
  --orange-soft: #FF8355;
  --cyan: #3FE0C8;
  --cream: #F4EFE4;
  --mist: #8FB3A6;
  --muted: #4E6E64;
  --red: #E23A4E;
  --yellow: #F2B33D;
  --paper: #DDD5C5;
  --card: #FFFDF7;

  --line: rgba(11, 43, 38, 0.14);
  --line-ink: rgba(143, 179, 166, 0.28);

  --maxw: 1280px;
  --gutter: clamp(18px, 4.2vw, 56px);

  --font-display: "Barlow Condensed", "Arial Narrow", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-num: "IBM Plex Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --ease: 0.16s ease;
  --shadow-paper: 8px 8px 0 rgba(221, 213, 197, 0.5);
}

/* ---------- 2. typography ---------- */
body {
  background-color: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

h1, h2, h3, h4 {
  line-height: 1.15;
  font-weight: 700;
}

h1, h2 {
  font-family: var(--font-display);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); line-height: 1.02; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
h3 { font-size: clamp(1.1rem, 1.6vw, 1.32rem); }

p { max-width: 40em; }

strong { font-weight: 700; }

small { font-size: 13px; line-height: 20px; }

:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
  border-radius: 1px;
}

::selection {
  background: var(--cyan);
  color: var(--ink-deep);
}

#main-content {
  display: block;
  scroll-margin-top: 96px;
}

/* ---------- 3. utilities ---------- */
.wrap {
  width: min(calc(100% - var(--gutter) * 2), var(--maxw));
  margin-inline: auto;
}

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

.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 300;
  background: var(--orange);
  color: var(--ink-deep);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 10px 18px;
  text-decoration: none;
  border-radius: 2px;
  transition: top var(--ease);
}

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

.prose p { max-width: 36em; }
.prose p + p { margin-top: 1em; }

/* ---------- 4. buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--ease), color var(--ease), border-color var(--ease);
}

.btn--primary {
  background: var(--orange);
  color: var(--ink-deep);
  border-color: var(--orange);
}

.btn--primary:hover {
  background: var(--orange-soft);
  border-color: var(--orange-soft);
}

.btn--line {
  background: transparent;
  color: currentColor;
  border-color: currentColor;
}

.btn--line:hover {
  background: var(--ink);
  color: var(--cream);
  border-color: var(--ink);
}

.btn--ghost {
  background: rgba(63, 224, 200, 0.12);
  color: var(--cyan);
  border-color: rgba(63, 224, 200, 0.42);
}

.btn--ghost:hover {
  background: var(--cyan);
  color: var(--ink-deep);
  border-color: var(--cyan);
}

/* ---------- 5. labels & tags ---------- */
.label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.label::before {
  content: "";
  width: 4px;
  height: 14px;
  background: var(--orange);
  flex: 0 0 auto;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.5;
  text-transform: uppercase;
  white-space: nowrap;
}

.tag--cyan { background: var(--cyan); border-color: var(--cyan); color: var(--ink-deep); }
.tag--orange { background: var(--orange); border-color: var(--orange); color: var(--ink-deep); }
.tag--red { background: var(--red); border-color: var(--red); color: #FFFDF7; }
.tag--yellow { background: var(--yellow); border-color: var(--yellow); color: var(--ink-deep); }
.tag--line { background: transparent; border-color: var(--mist); color: var(--ink); }

/* ---------- 6. breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.breadcrumb__link {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.breadcrumb__link:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.breadcrumb__sep {
  color: var(--mist);
}

.breadcrumb__current {
  color: var(--orange);
}

.section--ink .breadcrumb,
.section--deep .breadcrumb,
.section--aurora .breadcrumb { color: var(--mist); }

/* ---------- 7. sections ---------- */
.section {
  padding-block: clamp(48px, 8vw, 104px);
}

.section--paper { background: var(--cream); color: var(--ink); }
.section--card { background: var(--card); color: var(--ink); }

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

.section--deep {
  background: var(--ink-deep);
  color: var(--cream);
}

.section--aurora {
  background:
    radial-gradient(120% 90% at 12% 6%, rgba(63, 224, 200, 0.20), transparent 58%),
    radial-gradient(90% 80% at 88% 94%, rgba(242, 107, 58, 0.24), transparent 62%),
    linear-gradient(160deg, #0B2B26 0%, #123A32 52%, #071512 100%);
  color: var(--cream);
}

.section--ink .section-head__note,
.section--deep .section-head__note,
.section--aurora .section-head__note { color: var(--mist); }

.section-head {
  display: grid;
  gap: 12px;
  max-width: 62ch;
  margin-bottom: clamp(24px, 3.4vw, 44px);
}

.section-head__index {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--orange);
  text-transform: uppercase;
}

.section-head__title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  line-height: 1.06;
  letter-spacing: -0.01em;
}

.section-head__note {
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--muted);
  max-width: 38em;
}

.band {
  background: var(--orange);
  color: var(--ink-deep);
  padding-block: clamp(12px, 2vw, 20px);
  overflow: hidden;
}

.band--cyan { background: var(--cyan); color: var(--ink-deep); }
.band--paper { background: var(--paper); color: var(--ink); }

.band__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 28px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* ---------- 8. grids & cards ---------- */
.grid {
  display: grid;
  gap: clamp(18px, 2.6vw, 34px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr); }

@media (min-width: 900px) {
  .grid--stagger > *:nth-child(even) { transform: translateY(28px); }
}

.paper {
  position: relative;
  background: var(--card);
  border: 1px solid var(--paper);
  box-shadow: var(--shadow-paper);
  padding: clamp(18px, 2.6vw, 30px);
}

.paper__kicker {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 10px;
}

.paper__title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}

.paper__body {
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--muted);
  max-width: 38ch;
}

.paper--ink {
  background: var(--ink);
  color: var(--cream);
  border-color: rgba(143, 179, 166, 0.35);
  box-shadow: 8px 8px 0 rgba(11, 43, 38, 0.18);
}

.paper--ink .paper__kicker { color: var(--cyan); }
.paper--ink .paper__body { color: rgba(244, 239, 228, 0.78); }

.board {
  background: var(--card);
  border: 1px solid var(--paper);
}

.board__row {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 6px 18px;
  padding: 16px 20px;
  border-bottom: 1px dashed var(--paper);
}

.board__row:last-child { border-bottom: 0; }

.board__key {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
  padding-top: 3px;
}

.board__val {
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--ink);
}

/* ---------- 9. media ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--ink);
  border: 1px solid var(--paper);
}

.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 10;
}

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

.media__overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(63, 224, 200, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63, 224, 200, 0.14) 1px, transparent 1px);
  background-size: 44px 44px;
}

.media__stamp {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 4px 9px;
  background: rgba(7, 21, 18, 0.82);
  color: var(--cyan);
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.media__caption {
  margin-top: 10px;
  font-family: var(--font-num);
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 10. reveal & toc ---------- */
.js-motion [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.55s cubic-bezier(0.2, 0.7, 0.3, 1), transform 0.55s cubic-bezier(0.2, 0.7, 0.3, 1);
}

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

.toc {
  position: sticky;
  top: 96px;
}

.toc__list {
  display: grid;
  gap: 2px;
}

.toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 10px;
  border-left: 2px solid transparent;
  text-decoration: none;
  font-size: 0.86rem;
  color: var(--muted);
  transition: color var(--ease), border-color var(--ease), background-color var(--ease);
}

.toc__link:hover { color: var(--ink); }

.toc__link.is-active {
  color: var(--ink);
  border-left-color: var(--orange);
  background: rgba(242, 107, 58, 0.09);
}

.section--ink .toc__link,
.section--deep .toc__link,
.section--aurora .toc__link { color: var(--mist); }

.section--ink .toc__link.is-active,
.section--deep .toc__link.is-active,
.section--aurora .toc__link.is-active { color: var(--cream); }

/* ---------- 11. header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background: var(--ink);
  color: var(--cream);
  transition: background-color var(--ease);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  pointer-events: none;
  background: linear-gradient(
    90deg,
    var(--orange) 0%,
    var(--orange) 18%,
    var(--cyan) 18%,
    var(--cyan) 24%,
    rgba(143, 179, 166, 0.35) 24%,
    rgba(143, 179, 166, 0.35) 100%
  );
  opacity: 0.9;
}

.read-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 2px;
  z-index: 200;
  background: rgba(63, 224, 200, 0.14);
}

.read-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: var(--cyan);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(12px, 2vw, 28px);
  min-height: 78px;
  padding-block: 12px;
  transition: min-height var(--ease), padding var(--ease);
}

.brand {
  display: flex;
  align-items: center;
  min-width: 0;
}

.brand__link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.brand__mark {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  background: var(--orange);
  color: var(--ink-deep);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 74%, 76% 100%, 0 100%);
  transition: background-color var(--ease), width var(--ease), height var(--ease);
}

.brand__link:hover .brand__mark {
  background: var(--cyan);
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--cream);
  white-space: nowrap;
}

.brand__descriptor {
  font-family: var(--font-num);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--mist);
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.8vw, 26px);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(4px, 1.4vw, 20px);
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 10px 4px;
  color: var(--cream);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: color var(--ease);
}

.site-nav__index {
  font-family: var(--font-num);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--mist);
  transition: color var(--ease);
}

.site-nav__label {
  white-space: nowrap;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  bottom: 4px;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--ease);
}

.site-nav__link:hover { color: var(--cyan); }
.site-nav__link:hover .site-nav__index { color: var(--cyan); }
.site-nav__link:hover::after { transform: scaleX(1); }

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

.site-nav__foot {
  display: none;
  align-items: center;
  gap: 14px;
}

@media (min-width: 1200px) {
  .site-nav__foot { display: flex; }
}

.site-nav__utility {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.site-nav__cta { white-space: nowrap; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  background: transparent;
  color: var(--cream);
  border: 1px solid var(--line-ink);
  border-radius: 2px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: background-color var(--ease), border-color var(--ease), color var(--ease);
}

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

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

.nav-toggle__bar {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform var(--ease);
}

.nav-toggle[aria-expanded="true"] {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink-deep);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(3px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  transform: translateY(-3px) rotate(-45deg);
}

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

/* mobile drawer */
@media (max-width: 1023.98px) {
  .nav-toggle { display: inline-flex; }

  .site-header__inner { min-height: 64px; }

  .brand__mark { width: 38px; height: 38px; font-size: 1.28rem; }

  .brand__name { font-size: 1.08rem; }

  .brand__descriptor { font-size: 9px; letter-spacing: 0.16em; }

  .site-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: auto;
    z-index: 130;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: 84vh;
    overflow-y: auto;
    padding: 20px var(--gutter) calc(22px + env(safe-area-inset-bottom, 0px));
    background: var(--ink-deep);
    color: var(--cream);
    border-top: 2px solid var(--orange);
    box-shadow: 0 -24px 48px rgba(7, 21, 18, 0.55);
    transform: translateY(103%);
    visibility: hidden;
    transition: transform 0.28s ease, visibility 0.28s ease;
  }

  .site-nav[data-open="true"] {
    transform: translateY(0);
    visibility: visible;
  }

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

  .site-nav__item {
    border-bottom: 1px solid var(--line-ink);
  }

  .site-nav__link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 2px;
    font-size: 1.05rem;
  }

  .site-nav__link::after { display: none; }

  .site-nav__link[aria-current="page"] {
    padding-left: 10px;
    box-shadow: inset 3px 0 0 var(--orange);
  }

  .site-nav__foot {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
    margin-top: 20px;
  }

  .site-nav__utility {
    display: block;
    font-size: 11px;
    color: var(--mist);
    word-break: break-all;
  }

  .site-nav__cta {
    justify-content: center;
    width: 100%;
  }
}

/* desktop condensed rail */
@media (min-width: 1024px) {
  .site-header[data-scrolled="true"] .site-header__inner {
    min-height: 58px;
    padding-block: 6px;
  }

  .site-header[data-scrolled="true"] .brand__mark {
    width: 34px;
    height: 34px;
    font-size: 1.15rem;
  }

  .site-header[data-scrolled="true"] .brand__descriptor { display: none; }

  .site-header[data-scrolled="true"] .site-nav {
    position: fixed;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 8px 6px;
    background: rgba(7, 21, 18, 0.94);
    border: 1px solid rgba(63, 224, 200, 0.28);
    border-radius: 3px;
    box-shadow: 0 12px 32px rgba(7, 21, 18, 0.4);
  }

  .site-header[data-scrolled="true"] .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .site-header[data-scrolled="true"] .site-nav__link {
    justify-content: space-between;
    gap: 10px;
    padding: 6px 8px;
    font-size: 0.78rem;
    letter-spacing: 0.06em;
  }

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

  .site-header[data-scrolled="true"] .site-nav__index { font-size: 9px; }

  .site-header[data-scrolled="true"] .site-nav__foot { display: none; }

  .site-header[data-scrolled="true"] .site-nav__link[aria-current="page"] {
    background: rgba(242, 107, 58, 0.18);
    box-shadow: inset 2px 0 0 var(--orange);
  }
}

/* ---------- 12. footer ---------- */
.site-footer {
  background: var(--ink-deep);
  color: var(--cream);
}

.footer-strip {
  background: var(--ink);
  border-bottom: 1px solid var(--line-ink);
}

.footer-strip__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 6px 20px;
  padding-block: 10px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.footer-strip__item {
  display: inline-block;
}

.footer-strip__dot {
  color: var(--cyan);
  padding-inline: 4px;
}

.site-footer__inner {
  padding-block: clamp(40px, 6vw, 72px) 28px;
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: clamp(20px, 4vw, 56px);
  align-items: start;
  padding-bottom: clamp(26px, 4vw, 46px);
  border-bottom: 1px solid var(--line-ink);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-mark {
  width: 52px;
  height: 52px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  background: var(--orange);
  color: var(--ink-deep);
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 74%, 76% 100%, 0 100%);
}

.footer-brand__text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--cream);
}

.footer-brand__desc {
  font-family: var(--font-num);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--mist);
}

.footer-intro {
  font-size: 0.95rem;
  line-height: 1.85;
  color: rgba(244, 239, 228, 0.82);
  max-width: 42ch;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 48px);
  padding-block: clamp(28px, 4vw, 44px);
}

.footer-col__title {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 10px;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer-col__title::before {
  content: "";
  width: 14px;
  height: 3px;
  background: var(--orange);
  flex: 0 0 auto;
}

.footer-col__list {
  display: grid;
  gap: 2px;
}

.footer-col__link {
  display: inline-block;
  padding-block: 6px;
  color: var(--cream);
  text-decoration: none;
  font-size: 0.95rem;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.footer-col__link:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.footer-contact {
  display: grid;
  gap: 12px;
  font-family: var(--font-num);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}

.footer-contact__row {
  display: grid;
  gap: 2px;
}

.footer-contact__label {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.footer-contact__value {
  color: var(--cream);
  word-break: break-word;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 22px;
  border-top: 1px solid var(--line-ink);
}

.footer-legal {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
  max-width: none;
}

.footer-legal__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.footer-legal__link {
  font-size: 12px;
  color: var(--cream);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(244, 239, 228, 0.28);
  transition: color var(--ease), border-color var(--ease);
}

.footer-legal__link:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 13. responsive & motion ---------- */
@media (max-width: 900px) {
  .grid--2,
  .grid--3,
  .grid--split { grid-template-columns: minmax(0, 1fr); }

  .site-footer__top { grid-template-columns: minmax(0, 1fr); }

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

  .toc { position: static; }
}

@media (max-width: 600px) {
  .board__row { grid-template-columns: minmax(0, 1fr); }

  .footer-grid { grid-template-columns: minmax(0, 1fr); }

  .site-footer__bottom { flex-direction: column; align-items: flex-start; }

  .paper { box-shadow: 5px 5px 0 rgba(221, 213, 197, 0.5); }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .js-motion [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}