/* ══════════════════════════════════════════════════════════
   DESIGN PHILOSOPHY
   • Light mode: warm white, no fills on informational content
   • Dark mode: deep navy, subtle fills where needed for readability
   • Boxes only for interactive / discrete items (taxonomy cards,
     case study panels, citation block)
   • Whitespace + typography carry all structural hierarchy
   ─────────────────────────────────────────────────────────
   COLOR SEMANTICS
   --accent        → UI chrome only (buttons, links, focus rings)
   --why-c         → Why? dimension identity
   --how-c         → How? dimension identity
   --what-c        → What? dimension identity
   --ann-*         → one color per annotation type
══════════════════════════════════════════════════════════ */

:root {
  --bg: #fafaf8;
  --bg-alt: #f2efe9;
  --surface: #ffffff;
  --text: #18181c;
  --muted: #52525e;
  --muted2: #6a6a82;
  --border: #dedad2;
  --border-s: #eceae4;

  --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.05), 0 6px 20px rgba(0, 0, 0, 0.06);
  --shadow-lift:
    0 4px 16px rgba(0, 0, 0, 0.09), 0 12px 36px rgba(0, 0, 0, 0.08);

  --radius: 12px;
  --radius-sm: 7px;
  --focus: 0 0 0 3px rgba(37, 99, 235, 0.22);

  --serif: "Lora", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, sans-serif;
  --ease: 0.18s ease;
  --spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* UI accent — buttons, links, focus */
  --accent: #2563eb;
  --accent-h: #1d4ed8;
  --accent-s: rgba(37, 99, 235, 0.08);
  --accent-mid: #4f79c8;

  /* Semantic dimensions — used ONLY where semantically meaningful */
  --why-c: #b84300;
  --why-bg: rgba(184, 67, 0, 0.07);
  --why-border: rgba(184, 67, 0, 0.22);

  --how-c: #1a3d9e;
  --how-bg: rgba(26, 61, 158, 0.07);
  --how-border: rgba(26, 61, 158, 0.22);

  --what-c: #7a5800;
  --what-bg: rgba(122, 88, 0, 0.07);
  --what-border: rgba(122, 88, 0, 0.22);

  /* Annotation type colors — editorial, harmonious palette */
  --enc-c: #2a7a8c;
  --enc-bg: rgba(42, 122, 140, 0.07);
  --enc-br: rgba(42, 122, 140, 0.22);
  --con-c: #526070;
  --con-bg: rgba(82, 96, 112, 0.07);
  --con-br: rgba(82, 96, 112, 0.2);
  --txt-c: #357a64;
  --txt-bg: rgba(53, 122, 100, 0.07);
  --txt-br: rgba(53, 122, 100, 0.22);
  --gly-c: #7a4e6a;
  --gly-bg: rgba(122, 78, 106, 0.07);
  --gly-br: rgba(122, 78, 106, 0.2);
  --col-c: #5d4fa4;
  --col-bg: rgba(93, 79, 164, 0.07);
  --col-br: rgba(93, 79, 164, 0.2);
  --ind-c: #2c5e8c;
  --ind-bg: rgba(44, 94, 140, 0.07);
  --ind-br: rgba(44, 94, 140, 0.22);
  --geo-c: #8c3c3c;
  --geo-bg: rgba(140, 60, 60, 0.07);
  --geo-br: rgba(140, 60, 60, 0.2);
}

body.dark {
  --bg: #0d0f14;
  --bg-alt: #131620;
  --surface: #1a1d26;
  --text: #eef0f8;
  --muted: #b8c4d8;
  --muted2: #8896ae;
  --border: rgba(255, 255, 255, 0.1);
  --border-s: rgba(255, 255, 255, 0.06);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lift: 0 6px 24px rgba(0, 0, 0, 0.5), 0 16px 48px rgba(0, 0, 0, 0.4);
  --focus: 0 0 0 3px rgba(123, 148, 255, 0.32);
  --accent: #7b94ff;
  --accent-h: #9db0ff;
  --accent-s: rgba(123, 148, 255, 0.12);
  --accent-mid: #a3b8ff;
  --why-c: #fb923c;
  --why-bg: rgba(251, 146, 60, 0.11);
  --why-border: rgba(251, 146, 60, 0.28);
  --how-c: #6080ff;
  --how-bg: rgba(96, 128, 255, 0.11);
  --how-border: rgba(96, 128, 255, 0.28);
  --what-c: #d4a017;
  --what-bg: rgba(212, 160, 23, 0.11);
  --what-border: rgba(212, 160, 23, 0.28);
  --enc-c: #5cc8d8;
  --enc-bg: rgba(92, 200, 216, 0.1);
  --enc-br: rgba(92, 200, 216, 0.25);
  --con-c: #8fa8bc;
  --con-bg: rgba(143, 168, 188, 0.1);
  --con-br: rgba(143, 168, 188, 0.22);
  --txt-c: #5ec4a0;
  --txt-bg: rgba(94, 196, 160, 0.1);
  --txt-br: rgba(94, 196, 160, 0.25);
  --gly-c: #c080ac;
  --gly-bg: rgba(192, 128, 172, 0.1);
  --gly-br: rgba(192, 128, 172, 0.22);
  --col-c: #9e8fe0;
  --col-bg: rgba(158, 143, 224, 0.1);
  --col-br: rgba(158, 143, 224, 0.22);
  --ind-c: #5294cc;
  --ind-bg: rgba(82, 148, 204, 0.1);
  --ind-br: rgba(82, 148, 204, 0.25);
  --geo-c: #cc7c7c;
  --geo-bg: rgba(204, 124, 124, 0.1);
  --geo-br: rgba(204, 124, 124, 0.22);
}

/* ── Reset ─────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.72;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  transition:
    background-color 0.3s,
    color 0.3s;
}
body.drawer-open {
  overflow: hidden;
}

body.dark {
  background:
    radial-gradient(
      ellipse 90vw 55vh at 15% 0%,
      rgba(96, 128, 255, 0.06),
      transparent 65%
    ),
    radial-gradient(
      ellipse 70vw 45vh at 88% 4%,
      rgba(167, 139, 250, 0.04),
      transparent 65%
    ),
    radial-gradient(
      ellipse 50vw 30vh at 50% 100%,
      rgba(96, 128, 255, 0.03),
      transparent 70%
    ),
    var(--bg);
}

button,
input {
  font: inherit;
  color: inherit;
}
button {
  cursor: pointer;
}
a {
  color: inherit;
  text-decoration: none;
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus);
  border-radius: 4px;
}

::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 99px;
}

::selection {
  background: rgba(37, 99, 235, 0.13);
  color: var(--text);
}

/* ── Skip nav ─────────────────────────────────────────── */
.skip-nav {
  position: absolute;
  left: -9999px;
  top: 0.75rem;
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 9999;
}
.skip-nav:focus {
  left: 1rem;
  outline: 3px solid var(--accent-h);
  outline-offset: 2px;
}

/* ── Header ────────────────────────────────────────────── */
.top {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--border-s);
  transition: box-shadow 0.25s ease;
}

body.dark .top {
  background: rgba(13, 15, 20, 0.92);
  border-bottom-color: rgba(255, 255, 255, 0.06);
}

/* Thin gradient accent line at very top */
.top::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1.5px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--accent-mid) 8%,
    var(--accent) 45%,
    var(--accent-mid) 70%,
    transparent 100%
  );
  pointer-events: none;
  opacity: 0.9;
}
body.dark .top::before {
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(96, 128, 255, 0.6) 8%,
    rgba(123, 148, 255, 0.8) 45%,
    rgba(163, 184, 255, 0.5) 70%,
    transparent 100%
  );
  opacity: 1;
}

.top__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 28px 12px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 10px 24px;
}

.top__title h1 {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
  background: linear-gradient(115deg, var(--text) 0%, var(--text) 40%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 3px;
}
body.dark .top__title h1 {
  background: linear-gradient(115deg, #eef0f8 0%, #c8d4f0 40%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.top__sub {
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.5;
}
.top__authors {
  font-size: 12px;
  color: var(--muted2);
  margin-top: 2px;
  line-height: 1.4;
}
.top__authors em {
  color: var(--muted);
  font-style: italic;
  font-weight: 400;
}
.top__year {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-s);
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 4px;
  padding: 1px 6px;
  margin-left: 6px;
  vertical-align: middle;
  font-style: normal;
}

.top__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.top__nav {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
  margin-top: 9px;
}

.top__nav a {
  position: relative;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--muted2);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-sm);
  transition:
    color var(--ease),
    background var(--ease);
}
.top__nav a::after {
  content: "";
  position: absolute;
  bottom: 1px;
  left: 0.65rem;
  right: 0.65rem;
  height: 1.5px;
  background: var(--accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s var(--spring);
}
.top__nav a:hover {
  color: var(--accent);
}
.top__nav a:hover::after {
  transform: scaleX(1);
}
.top__nav a.active {
  color: var(--accent);
  font-weight: 600;
}
.top__nav a.active::after {
  transform: scaleX(1);
}

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 0.38rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--muted2);
  white-space: nowrap;
  min-height: 2.1rem;
  transition:
    all var(--ease),
    transform 0.14s var(--spring);
  user-select: none;
}
.btn:hover {
  background: var(--accent-s);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}
.btn:active {
  transform: scale(0.97);
}

.btn--paper {
  background: transparent;
  border-color: var(--border-s);
  color: var(--muted2);
  font-size: 0.71rem;
  font-weight: 500;
  padding: 0.2rem 0.72rem;
  min-height: 1.7rem;
  letter-spacing: 0;
  opacity: 0.8;
}
.btn--paper:hover {
  border-color: rgba(37, 99, 235, 0.35);
  color: var(--accent-mid);
  background: var(--accent-s);
  opacity: 1;
}

/* ── Dark mode toggle ──────────────────────────────────── */
.toggle-sw {
  position: relative;
}
.toggle-sw input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.toggle-lbl {
  display: flex;
  align-items: center;
  width: 46px;
  height: 23px;
  background: var(--border-s);
  border: 1.5px solid var(--border);
  border-radius: 99px;
  cursor: pointer;
  padding: 2px;
  transition: all 0.22s;
}
.toggle-inner {
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}
.toggle-sw input:checked + .toggle-lbl .toggle-inner {
  transform: translateX(21px);
}
.ti {
  position: absolute;
  font-size: 11px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  line-height: 1;
}
.sun {
  left: 4px;
  color: #d97706;
}
.moon {
  right: 3px;
  color: #7c3aed;
}
body.dark .sun {
  color: #fbbf24;
}
body.dark .moon {
  color: #a78bfa;
}

/* ── Page layout ────────────────────────────────────────── */
.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 28px 96px;
}

.section {
  margin-bottom: 88px;
  scroll-margin-top: 72px;
}
.section + .section {
  padding-top: 24px;
  border-top: none;
  position: relative;
}
.section + .section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--border) 18%,
    var(--border) 82%,
    transparent 100%
  );
}

/* ── Section header ─────────────────────────────────────── */
.sec-head {
  margin-bottom: 36px;
}

/* Eyebrow: editorial section label above each title */
.sec-eyebrow {
  display: block;
  font-size: 0.57rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.75;
  margin-bottom: 10px;
}

/* Chip: just small uppercase label — no pill shape */
.sec-chip {
  display: block;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}

.sec-title {
  font-family: var(--serif);
  font-size: 1.9rem;
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.16;
  color: var(--text);
  padding-bottom: 0.55rem;
  border-bottom: 1.5px solid transparent;
  border-image: linear-gradient(
      90deg,
      var(--accent-mid) 0%,
      var(--accent) 38%,
      rgba(37, 99, 235, 0.25) 70%,
      transparent 96%
    )
    1;
  display: inline-block;
  margin-bottom: 0;
}

/* Hero variant — overview section */
.sec-title--hero {
  font-size: 2.5rem;
  letter-spacing: -0.035em;
  line-height: 1.1;
  font-weight: 600;
}

.sec-desc {
  margin-top: 12px;
  font-size: 0.95rem;
  line-height: 1.76;
  color: var(--muted);
  max-width: 760px;
}

/* Hero desc variant — overview */
.sec-desc--hero {
  font-size: 1.02rem;
  line-height: 1.74;
  color: var(--muted2);
  max-width: 600px;
}

/* ── Contributions list (Overview) ──────────────────────── */
.contrib-title {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted2);
  margin-bottom: 18px;
}

.contrib-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.contrib-list li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border-s);
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.72;
}
.contrib-list li:last-child {
  border-bottom: none;
}

.contrib-dot {
  width: 2px;
  height: 24px;
  border-radius: 2px;
  flex-shrink: 0;
  margin-top: 0.32em;
}

.contrib-content {
  flex: 1;
}
.contrib-key {
  font-weight: 600;
  color: var(--text);
}

/* ── Stats strip ─────────────────────────────────────────── */
/* Open horizontal band — numbers only, no card boxes */
.stats {
  display: flex;
  align-items: stretch;
  border-top: 1px solid var(--border-s);
  border-bottom: 1px solid var(--border-s);
  margin: 0 0 32px;
}

.stat {
  flex: 1;
  text-align: center;
  padding: 16px 12px;
  border-right: 1px solid var(--border-s);
}
.stat:last-child {
  border-right: none;
}

.stat-n {
  font-family: var(--serif);
  font-size: 2.1rem;
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--accent);
}
.stat-l {
  font-size: 0.68rem;
  color: var(--muted2);
  margin-top: 5px;
  line-height: 1.4;
  letter-spacing: 0.01em;
}

/* ── Figure containers ──────────────────────────────────── */
/* Subtle warm tint — delineates without boxing */
.ov-fig {
  margin: 0;
  background: var(--bg-alt);
  border: 1px solid var(--border-s);
  border-radius: var(--radius);
  padding: 10px;
}
body.dark .ov-fig {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--border);
}

.ov-fig img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.ov-fig figcaption {
  margin-top: 8px;
  font-size: 11.5px;
  color: var(--muted2);
  line-height: 1.55;
}

.ov-fig--method {
  border-color: var(--border);
}

.method-fig-stage {
  border-radius: 8px;
  padding: 8px;
  background: linear-gradient(
    145deg,
    rgba(255, 255, 255, 0.96),
    rgba(246, 248, 255, 0.85)
  );
  border: 1px solid var(--border-s);
}
body.dark .method-fig-stage {
  background: linear-gradient(
    145deg,
    rgba(250, 252, 255, 0.95),
    rgba(241, 246, 255, 0.88)
  );
  border-color: rgba(255, 255, 255, 0.22);
  box-shadow: inset 0 0 0 1px rgba(120, 148, 255, 0.18);
}

.method-fig-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
  border: none !important;
  background: transparent;
  filter: drop-shadow(0 3px 10px rgba(16, 24, 56, 0.12));
}
body.dark .method-fig-img {
  filter: drop-shadow(0 6px 16px rgba(0, 0, 0, 0.3)) contrast(1.04)
    brightness(1.02);
}

/* ── Two-column content layouts ─────────────────────────── */
.overview-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 28px;
  margin-top: 28px;
  margin-bottom: 0;
  align-items: start;
}

.ds-overview {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

/* Content text blocks — NO card background, just type hierarchy */
.ov-hero-copy h3,
.ds-overview-copy h3 {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted2);
  margin-bottom: 14px;
}

.ov-hero-copy p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.72;
  margin-bottom: 16px;
}

/* ── Key-point lists (Design Space guide, Study Design) ─── */
/* Left accent border only — NO fill, NO box */
.ov-pill-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.ov-pill {
  padding: 13px 0 13px 18px;
  border-left: 2px solid var(--border);
  font-size: 0.89rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 12px;
  transition: border-left-color 0.2s ease, padding-left 0.2s ease;
}
.ov-pill:last-child {
  margin-bottom: 0;
}
.ov-pill:hover {
  border-left-color: var(--accent);
  padding-left: 20px;
}
.ov-pill strong {
  color: var(--text);
  font-weight: 600;
}

/* Semantic colors for Design Space guide pills */
.ds-overview-copy .ov-pill:nth-child(1) {
  border-left-color: var(--why-c);
}
.ds-overview-copy .ov-pill:nth-child(2) {
  border-left-color: var(--how-c);
}
.ds-overview-copy .ov-pill:nth-child(3) {
  border-left-color: var(--what-c);
}
.ds-overview-copy .ov-pill:nth-child(1):hover {
  border-left-color: var(--why-c);
}
.ds-overview-copy .ov-pill:nth-child(2):hover {
  border-left-color: var(--how-c);
}
.ds-overview-copy .ov-pill:nth-child(3):hover {
  border-left-color: var(--what-c);
}

/* Figure caption in design space */
.ds-overview-fig {
  margin: 0;
  background: var(--bg-alt);
  border: 1px solid var(--border-s);
  border-radius: var(--radius);
  padding: 10px;
}
body.dark .ds-overview-fig {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--border);
}
.design-space-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
}
.design-space-cap {
  margin-top: 9px;
  font-size: 11.5px;
  color: var(--muted2);
  line-height: 1.55;
}

/* ── Methodology aspect grid ─────────────────────────────── */
/* 4 aspects — left border only, no fill cards */
.ov-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 40px;
  margin-top: 32px;
}

.ov-card {
  padding: 18px 0 18px 18px;
  border-left: 2px solid var(--border-s);
  border-bottom: 1px solid var(--border-s);
  transition: border-left-color 0.18s ease;
}
.ov-card:nth-child(3),
.ov-card:nth-child(4) {
  border-bottom: none;
}
.ov-card:hover {
  border-left-color: var(--accent);
}

.ov-k {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}
.ov-v {
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--muted);
}

/* ── Compact methodology panel ─────────────────────────── */
.method-shell {
  padding: 26px;
  border: 1px solid var(--border-s);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: var(--shadow-card);
}

.method-summary {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.method-metric {
  padding: 18px 14px 16px;
  border: 1px solid var(--border-s);
  border-top: 2px solid var(--accent-mid);
  border-radius: 14px;
  background: var(--bg-alt);
  transition: border-top-color 0.2s ease;
}
.method-metric:hover {
  border-top-color: var(--accent);
}

.method-metric-n {
  font-family: var(--serif);
  font-size: 2.3rem;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.045em;
  color: var(--accent);
}

.method-metric-l {
  margin-top: 8px;
  font-size: 0.7rem;
  line-height: 1.5;
  color: var(--muted2);
  letter-spacing: 0.01em;
}

.method-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.95fr);
  gap: 16px;
  align-items: start;
}

.method-card {
  margin: 0;
  padding: 14px;
  border: 1px solid var(--border-s);
  border-radius: 16px;
  background: var(--bg-alt);
}

.method-card-head {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted2);
}

.method-fig-wrap {
  margin-top: 10px;
}

.method-card figcaption {
  margin-top: 10px;
  font-size: 0.8rem;
  line-height: 1.58;
  color: var(--muted2);
}

.method-steps {
  display: grid;
  gap: 10px;
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}

.method-step {
  padding-left: 14px;
  border-left: 2px solid var(--border);
}

.method-step-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}

.method-step-k {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.method-step-v {
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--muted2);
}

.method-step p {
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--muted);
}

.method-note {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border-s);
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--muted);
}

.method-note strong {
  color: var(--text);
}
.ov-v strong {
  color: var(--text);
}

/* ── Overview abstract (wrapper used in some sections) ─── */
.overview-abstract {
  margin-bottom: 0;
}
.overview-abstract h3 {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted2);
  margin-bottom: 14px;
}
.overview-abstract p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.72;
  margin-bottom: 10px;
}

/* ══════════════════════════════════════════
   DESIGN SPACE (interactive widget)
══════════════════════════════════════════ */
.ds-wrap {
  background: var(--surface);
  border: 1px solid var(--border-s);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-card);
}
body.dark .ds-wrap {
  background: var(--surface);
}

.ds-hint {
  font-size: 0.72rem;
  color: var(--muted2);
  text-align: center;
  margin-bottom: 20px;
  padding: 6px 14px;
  background: var(--accent-s);
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(37, 99, 235, 0.18);
}

.ds-top {
  display: grid;
  grid-template-columns: 210px 28px 1fr;
  align-items: start;
}
.ds-col-head {
  text-align: center;
  padding-bottom: 14px;
}
.ds-col-head-label {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 500;
}
.ds-col-head-sub {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted2);
  margin-top: 1px;
}
.why-head .ds-col-head-label {
  color: var(--why-c);
}
.how-head .ds-col-head-label {
  color: var(--how-c);
}
.ds-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 44px;
  color: var(--border);
  font-size: 16px;
}

.why-items {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.why-card {
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--why-border);
  background: transparent;
  cursor: pointer;
  user-select: none;
  transition: all 0.2s cubic-bezier(0.2, 0.9, 0.2, 1);
}
.why-card:hover,
.why-card.active {
  background: var(--why-bg);
  border-color: var(--why-c);
  box-shadow:
    0 0 0 3px rgba(184, 67, 0, 0.06),
    2px 4px 12px rgba(184, 67, 0, 0.1);
  transform: translateX(2px);
}
.why-card.dim {
  opacity: 0.2;
  transform: none !important;
  box-shadow: none !important;
}
.why-name {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--why-c);
}
.why-desc {
  font-size: 0.7rem;
  color: var(--muted2);
  margin-top: 1px;
  line-height: 1.4;
}

.ann-items {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.ann-card {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-s);
  background: transparent;
  cursor: pointer;
  user-select: none;
  transition: all 0.2s cubic-bezier(0.2, 0.9, 0.2, 1);
}
.ann-card:hover {
  transform: scale(1.012);
}
.ann-card.active {
  transform: scale(1.015);
}
.ann-card.dim {
  opacity: 0.18;
  transform: none !important;
  box-shadow: none !important;
}
.ann-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid;
}
.ann-body {
  flex: 1;
  min-width: 0;
}
.ann-name {
  font-size: 11.5px;
  font-weight: 700;
}
.ann-bar-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
}
.ann-bar {
  flex: 1;
  height: 2.5px;
  background: var(--border-s);
  border-radius: 2px;
  overflow: hidden;
}
.ann-fill {
  height: 100%;
  border-radius: 2px;
  width: 0;
  transition: width 0.9s cubic-bezier(0.2, 0.9, 0.2, 1);
}
.ann-pct {
  font-size: 9.5px;
  color: var(--muted2);
  white-space: nowrap;
}
.ann-svg {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
}
.ann-svg svg {
  width: 20px;
  height: 20px;
  display: block;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ds-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 22px 0 16px;
}
.ds-divider-line {
  flex: 1;
  height: 1px;
  background: var(--border-s);
}
.ds-divider-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--what-c);
  background: var(--what-bg);
  border: 1px solid var(--what-border);
  padding: 4px 14px;
  border-radius: 99px;
  white-space: nowrap;
}
.ds-divider-note {
  font-size: 10px;
  color: var(--muted2);
  font-style: italic;
}

.what-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.what-card {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--what-border);
  background: transparent;
  cursor: pointer;
  user-select: none;
  transition: all 0.2s cubic-bezier(0.2, 0.9, 0.2, 1);
}
.what-card:hover,
.what-card.active {
  background: var(--what-bg);
  border-color: var(--what-c);
  box-shadow:
    0 0 0 3px rgba(122, 88, 0, 0.06),
    2px 4px 14px rgba(122, 88, 0, 0.09);
}
.what-card.dim {
  opacity: 0.2;
  transform: none !important;
  box-shadow: none !important;
}
.what-name {
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--what-c);
}
.what-pct {
  font-size: 10px;
  font-weight: 600;
  color: var(--muted2);
  margin-top: 2px;
}
.what-desc {
  font-size: 0.7rem;
  color: var(--muted2);
  margin-top: 5px;
  line-height: 1.45;
}

.ds-info {
  margin-top: 18px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: var(--bg-alt);
  border: 1px solid var(--border-s);
  animation: fadeUp 0.22s ease both;
}
body.dark .ds-info {
  background: rgba(255, 255, 255, 0.04);
}
.ds-info h4 {
  font-family: var(--serif);
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 5px;
}
.ds-info p {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.65;
}
.ds-ens-row,
.ds-what-row {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 10px;
  align-items: center;
}
.ds-ens-lbl,
.ds-what-lbl {
  font-size: 10px;
  font-weight: 700;
  color: var(--muted2);
}
.ds-ens-tag {
  font-size: 10.5px;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 99px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--muted);
}
body.dark .ds-ens-tag {
  background: rgba(255, 255, 255, 0.06);
}
.ds-what-tag {
  font-size: 10.5px;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 99px;
  background: var(--what-bg);
  border: 1px solid var(--what-border);
  color: var(--what-c);
}

/* Design space static figure nodes */
.ds-overview-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 8px;
  align-items: center;
}
.ds-overview-row--what {
  margin-top: 10px;
  grid-template-columns: 1fr;
  justify-items: center;
}
.ds-node {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  min-height: 88px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
body.dark .ds-node {
  background: rgba(255, 255, 255, 0.04);
}
.ds-node h3 {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1;
  margin-bottom: 5px;
}
.ds-node p {
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--muted);
}
.ds-node--why {
  border-color: var(--why-border);
  background: var(--why-bg);
}
.ds-node--why h3 {
  color: var(--why-c);
}
.ds-node--how h3 {
  color: var(--how-c);
}
.ds-node--what {
  border-color: var(--what-border);
  background: var(--what-bg);
  max-width: 80%;
}
.ds-node--what h3 {
  color: var(--what-c);
}
.ds-arrow-h {
  font-size: 18px;
  font-weight: 300;
  color: var(--border);
  padding: 0 2px;
}
.ds-arrow-v {
  font-size: 18px;
  font-weight: 300;
  color: var(--border);
  line-height: 1;
}

/* DSF detail table (legacy) */
.dsf-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.dsf-panel {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  background: var(--bg-alt);
}
body.dark .dsf-panel {
  background: rgba(255, 255, 255, 0.03);
}
.dsf-panel--why {
  background: var(--why-bg);
  border-color: var(--why-border);
}
.dsf-panel--how {
  background: var(--how-bg);
  border-color: var(--how-border);
}
.dsf-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 8px;
}
.dsf-head h4 {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 500;
  line-height: 1;
}
.dsf-panel--why .dsf-head h4 {
  color: var(--why-c);
}
.dsf-panel--how .dsf-head h4 {
  color: var(--how-c);
}
.dsf-head p {
  font-size: 10px;
  color: var(--muted2);
}
.dsf-why-head {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  margin: 0 0 6px 128px;
}
.dsf-why-head span {
  font-size: 9px;
  color: var(--muted2);
  transform: rotate(-35deg);
  transform-origin: left bottom;
  white-space: nowrap;
}
.dsf-row {
  display: grid;
  grid-template-columns: 110px 110px 1fr;
  gap: 8px;
  align-items: center;
  padding: 5px 0;
  border-top: 1px dashed var(--border-s);
}
.dsf-row:first-of-type {
  border-top: none;
}
.dsf-row--how {
  grid-template-columns: 110px 140px 1fr;
}
.dsf-type {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  color: var(--text);
}
.dsf-why-cells {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
}
.dsf-cell {
  height: 17px;
  border-radius: 3px;
  background: var(--border-s);
  border: 1px solid var(--border-s);
}
.dsf-cell.on {
  background: #e07a32;
  border-color: #e07a32;
}
.dsf-usage {
  margin: 0;
  padding-left: 14px;
}
.dsf-usage li {
  font-size: 10px;
  color: var(--text);
  line-height: 1.4;
}
.dsf-how-head {
  display: grid;
  grid-template-columns: 110px 140px 1fr;
  gap: 8px;
  font-size: 9px;
  font-weight: 700;
  color: var(--muted2);
  margin-bottom: 6px;
}
.dsf-how-cells {
  display: grid;
  grid-template-columns: repeat(10, 1fr) auto;
  gap: 3px;
  align-items: center;
}
.dsf-hcell {
  height: 15px;
  border-radius: 3px;
  background: var(--border-s);
}
.dsf-hcell.on {
  background: #8aa6d8;
}
.dsf-pct {
  font-size: 10px;
  font-weight: 700;
  color: #365ea5;
  padding-left: 5px;
}
.dsf-ens {
  font-size: 10px;
  color: var(--text);
  line-height: 1.45;
}
.dsf-what {
  grid-column: 1/-1;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  background: var(--bg-alt);
}
body.dark .dsf-what {
  background: rgba(255, 255, 255, 0.03);
}
.dsf-what-title {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--what-c);
  line-height: 1;
  margin-bottom: 7px;
}
.dsf-what-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.dsf-what-cards article {
  background: var(--bg-alt);
  border: 1px solid var(--border-s);
  border-radius: 8px;
  padding: 8px 9px;
}
body.dark .dsf-what-cards article {
  background: rgba(255, 255, 255, 0.04);
}
.dsf-what-cards h5 {
  font-size: 11px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 3px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}
.dsf-what-cards h5 span {
  font-size: 10px;
  color: var(--muted2);
  font-weight: 600;
}
.dsf-what-cards p {
  font-size: 10.5px;
  color: var(--muted);
  line-height: 1.5;
}
.dsf-key {
  margin-top: 8px;
  font-size: 10px;
  color: var(--muted2);
  display: flex;
  align-items: center;
  gap: 6px;
}
.key-dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--border-s);
  border: 1px solid var(--border);
}
.key-dot.on {
  background: #e07a32;
  border-color: #e07a32;
}
body.dark .dsf-cell {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.1);
}
body.dark .dsf-cell.on {
  background: #f49a45;
  border-color: #f49a45;
}
body.dark .dsf-hcell {
  background: rgba(255, 255, 255, 0.08);
}
body.dark .dsf-hcell.on {
  background: #8fb3ff;
}
body.dark .dsf-pct {
  color: #a9c4ff;
}
body.dark .dsf-row {
  border-top-color: rgba(255, 255, 255, 0.07);
}

/* ══════════════════════════════════════════
   TAXONOMY
══════════════════════════════════════════ */
.tax-shell {
  padding: 26px;
  border: 1px solid var(--border-s);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: var(--shadow-card);
}

.tax-toolbar {
  margin-bottom: 14px;
}

.tax-toolbar-copy {
  max-width: 60ch;
  padding: 14px 18px;
  border: 1px solid var(--border-s);
  border-left: 2px solid var(--accent);
  border-radius: 0 12px 12px 0;
  background: var(--bg-alt);
}

.tax-toolbar-k {
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.8;
}

.tax-toolbar-desc {
  margin-top: 5px;
  font-size: 0.86rem;
  line-height: 1.66;
  color: var(--muted);
  max-width: 58ch;
}

.tax-controls-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.tax-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 0;
}

.tax-status {
  font-size: 0.79rem;
  line-height: 1.45;
  color: var(--muted2);
  letter-spacing: 0.01em;
}

.tax-filter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 2.55rem;
  padding: 0.4rem 0.95rem;
  border-radius: 99px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
  user-select: none;
  letter-spacing: 0.005em;
  transition:
    background var(--ease),
    border-color var(--ease),
    color var(--ease),
    box-shadow var(--ease),
    transform 0.13s var(--spring);
}
.tax-filter-label {
  white-space: nowrap;
}
.tax-filter:hover {
  border-color: var(--accent);
  background: var(--accent-s);
  color: var(--accent);
  transform: translateY(-1px);
}
.tax-filter:focus-visible {
  border-color: var(--accent-mid);
  box-shadow:
    0 0 0 3px var(--accent-s),
    0 8px 18px rgba(37, 99, 235, 0.12);
}
.tax-filter.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.2);
}
.tax-filter--all {
  padding-inline: 1rem;
}
.tax-filter.active .task-dot--filter {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.26);
  color: #fff;
}

/* ── Taxonomy grid — 7 columns, all types in one row ──────── */
.tax-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 10px;
}

.tax-card {
  appearance: none;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  width: 100%;
  min-height: 100%;
  padding: 14px 12px 12px;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--border-s);
  border-top: 2px solid transparent; /* color set by JS */
  cursor: pointer;
  transition:
    transform 0.16s var(--spring),
    box-shadow 0.16s ease,
    background 0.16s ease,
    border-color 0.14s ease;
}
body.dark .tax-card {
  background: var(--surface);
  border-color: var(--border);
}
.tax-card:focus-visible {
  transform: translateY(-1px);
  background: var(--card-tint, var(--surface));
  border-color: var(--border);
  box-shadow:
    0 0 0 3px var(--accent-s),
    var(--shadow-card);
}
.tax-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
  background: var(--card-tint, var(--surface));
  border-color: var(--border);
}
.tax-card.active {
  background: var(--card-tint, var(--surface));
  border-color: var(--border);
  box-shadow:
    0 0 0 2px var(--accent),
    var(--shadow-card);
}
.tax-card-head,
.tax-card-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tax-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid;
  transition: transform 0.16s var(--spring);
}
.tax-card:hover .tax-icon,
.tax-card:focus-visible .tax-icon {
  transform: scale(1.06) rotate(-2deg);
}
.tax-icon .ann-svg {
  width: 18px;
  height: 18px;
}
.tax-icon .ann-svg svg {
  width: 18px;
  height: 18px;
}
.tax-name {
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.22;
  text-align: left;
  color: var(--text);
}
.tax-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.tax-count {
  font-size: 0.71rem;
  font-weight: 600;
  color: var(--muted2);
  letter-spacing: 0.01em;
  font-variant-numeric: tabular-nums;
}
.tax-bar-row {
  display: flex;
  align-items: center;
  gap: 7px;
  width: 100%;
}
.tax-bar {
  flex: 1;
  height: 4px;
  background: var(--border-s);
  border-radius: 99px;
  overflow: hidden;
}
.tax-fill {
  height: 100%;
  border-radius: 99px;
  width: 0;
  transition: width 1s cubic-bezier(0.2, 0.9, 0.2, 1);
}
.tax-pct {
  font-size: 0.74rem;
  font-weight: 600;
  white-space: nowrap;
  letter-spacing: 0;
  min-width: 30px;
  text-align: right;
  color: var(--muted2);
}
.tax-tasks {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: flex-end;
}
/* Task initial badges — compact circles with title tooltip */
.task-dot {
  width: 20px;
  height: 20px;
  border-radius: 999px;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--why-bg);
  border: 1px solid var(--why-border);
  color: var(--why-c);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
  flex-shrink: 0;
  pointer-events: none;
  user-select: none;
}
.task-dot--filter {
  width: 22px;
  height: 22px;
  font-size: 9.5px;
}
.task-dot--card {
  width: 21px;
  height: 21px;
}
/* Keep pill style for legacy/detail use */
.task-pill {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 99px;
  background: var(--why-bg);
  border: 1px solid var(--why-border);
  color: var(--why-c);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

/* ── Taxonomy drawer — fixed right panel ─────────────────── */
.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(11, 15, 23, 0.34);
  z-index: 600;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  animation: overlayIn 0.22s ease;
}
.drawer-overlay.open {
  display: block;
}
@keyframes overlayIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
.tax-drawer {
  position: fixed;
  top: 0;
  right: 0;
  height: 100dvh;
  width: 700px;
  max-width: calc(100vw - 12px);
  background: var(--surface);
  border-left: 2px solid transparent;
  box-shadow: -16px 0 48px rgba(0, 0, 0, 0.12), -4px 0 12px rgba(0, 0, 0, 0.06);
  z-index: 601;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}
.tax-drawer.open {
  transform: translateX(0);
}
body.dark .tax-drawer {
  box-shadow: -10px 0 44px rgba(0, 0, 0, 0.52);
}
.drawer-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--border-s);
  flex-shrink: 0;
}
.drawer-head-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid;
  margin-top: 1px;
}
.drawer-head-icon .ann-svg,
.drawer-head-icon .ann-svg svg {
  width: 20px;
  height: 20px;
}
.drawer-head-text {
  flex: 1;
  min-width: 0;
}
.drawer-type-name {
  font-size: 1.14rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.drawer-type-meta {
  font-size: 12px;
  color: var(--muted2);
  margin-top: 4px;
}
.drawer-close {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  border: 1px solid var(--border-s);
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  line-height: 1;
  color: var(--muted2);
  transition:
    background 0.12s,
    color 0.12s,
    border-color 0.12s;
}
.drawer-close:hover,
.drawer-close:focus-visible {
  background: var(--accent-s);
  color: var(--text);
  border-color: var(--accent-mid);
}
.drawer-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 20px 24px 28px;
}
.drawer-desc {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--muted);
}
.drawer-summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.drawer-summary-card {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 12px 13px 13px;
  border: 1px solid var(--border-s);
  border-radius: 12px;
  background: var(--bg-alt);
}
.drawer-summary-card--full {
  width: 100%;
}
.drawer-section-lbl,
.drawer-cs-head {
  font-size: 9.5px;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted2);
  margin: 0;
}
.drawer-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.drawer-chips--dense {
  gap: 5px;
}
.tax-chip {
  font-size: 10.5px;
  font-weight: 650;
  line-height: 1.35;
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
}
.tax-chip--why {
  background: var(--why-bg);
  border-color: var(--why-border);
  color: var(--why-c);
}
.tax-chip--how {
  background: var(--how-bg);
  border-color: var(--how-border);
  color: var(--how-c);
}
.tax-chip--what {
  background: var(--what-bg);
  border-color: var(--what-border);
  color: var(--what-c);
}
.tax-chip--empty {
  background: transparent;
  border-style: dashed;
  color: var(--muted2);
}
.drawer-cs-slider-wrap {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--bg-alt);
  border: 1px solid var(--border-s);
  border-radius: 14px;
  padding: 14px;
}
.drawer-cs-head-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.drawer-nav-inline {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid var(--border-s);
  background: var(--surface);
}
.drawer-nav-dots {
  display: flex;
  align-items: center;
  gap: 6px;
}
.drawer-nav-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  transition:
    background 0.16s,
    border-color 0.16s,
    transform 0.16s;
}
.drawer-nav-dot:hover,
.drawer-nav-dot:focus-visible {
  border-color: var(--accent-mid);
  background: var(--accent-s);
}
.drawer-nav-dot.active {
  background: var(--accent);
  border-color: var(--accent);
}
.drawer-nav-btn {
  min-width: 28px;
  min-height: 28px;
  padding: 0;
  border-radius: 999px;
  border: 1px solid var(--border-s);
  background: transparent;
  color: var(--muted2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition:
    background 0.14s,
    color 0.14s,
    border-color 0.14s;
}
.drawer-nav-btn:disabled {
  opacity: 0.42;
  background: var(--bg-alt);
  cursor: not-allowed;
}
.drawer-nav-btn:not(:disabled):hover,
.drawer-nav-btn:not(:disabled):focus-visible {
  background: var(--accent-s);
  color: var(--accent);
  border-color: var(--accent-mid);
}
.drawer-nav-lbl {
  min-width: 42px;
  text-align: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted2);
  letter-spacing: 0.02em;
}
.drawer-slider {
  min-height: 0;
}
.drawer-slide {
  display: none;
}
.drawer-slide.active {
  display: grid;
  gap: 10px;
}
.drawer-slide-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  border: 1px solid var(--border-s);
  background: var(--surface);
}
.drawer-slide-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px 12px;
}
.drawer-slide-title {
  font-size: 0.97rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}
.drawer-slide-sub {
  font-size: 0.76rem;
  color: var(--muted2);
  letter-spacing: 0.01em;
}
.drawer-slide-rows {
  display: grid;
  gap: 8px;
}
.drawer-slide-row {
  font-size: 0.8rem;
  line-height: 1.55;
  padding: 10px 11px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border-s);
  color: var(--text);
}
.drawer-slide-row .row-why {
  display: block;
  margin-bottom: 3px;
  font-size: 9.5px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.drawer-slide-row .row-how {
  display: block;
}
.drawer-slide-row .row-how-lbl,
.drawer-slide-row .row-note-lbl {
  font-weight: 700;
  color: var(--muted2);
}
.drawer-slide-row .row-note {
  display: block;
  margin-top: 4px;
  font-size: 0.72rem;
  color: var(--muted);
}
.drawer-slide-none {
  font-size: 0.8rem;
  line-height: 1.55;
  color: var(--muted2);
  font-style: italic;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px dashed var(--border);
  background: var(--surface);
}

/* ══════════════════════════════════════════
   CASE STUDIES
══════════════════════════════════════════ */
.cs-shell {
  padding: 0;
}

.cs-toolbar {
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-s);
}
body.dark .cs-toolbar {
  border-color: var(--border);
}

.cs-toolbar-copy {
  padding: 0;
}

.cs-toolbar-k {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}

.cs-toolbar-desc {
  max-width: 70ch;
  font-size: 0.87rem;
  line-height: 1.62;
  color: var(--muted);
  margin: 0;
}

.cs-controls-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
}

.cs-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  flex: 1 1 auto;
}

.cs-tab {
  min-width: 0;
  padding: 0.65rem 0.85rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  transition:
    all var(--ease),
    transform 0.13s var(--spring);
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  text-align: left;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.02);
}

.cs-tab-k {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted2);
}

.cs-tab-title {
  font-size: 0.84rem;
  font-weight: 600;
  line-height: 1.38;
}

.cs-tab.active {
  background: var(--accent-s);
  border-color: rgba(37, 99, 235, 0.28);
  border-top: 2px solid var(--accent);
  color: var(--text);
  box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.06);
}

.cs-tab.active .cs-tab-k,
.cs-tab.active .cs-tab-title {
  color: var(--accent);
}

.cs-tab:hover:not(.active) {
  border-color: var(--accent-mid);
  color: var(--text);
  transform: translateY(-1px);
}

.cs-tab:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.cs-status {
  flex: 0 0 auto;
  max-width: 28ch;
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--muted2);
}

.cs-panels {
  display: grid;
}

.cs-panel {
  display: none;
}
.cs-panel.active {
  display: block;
}

.cs-panel-shell {
  padding: 0;
}

.cs-panel-head {
  display: grid;
  gap: 8px;
  margin-bottom: 12px;
}

.cs-panel-desc {
  max-width: 70ch;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--muted);
  margin: 0;
}

.cs-panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  align-items: start;
}

.cs-card {
  margin: 0;
  padding: 0;
}

.cs-card--figure,
.cs-card--analysis {
  display: grid;
  align-content: start;
  gap: 10px;
}

.cs-card--analysis {
  padding-left: 18px;
  border-left: 1px solid var(--border-s);
}
body.dark .cs-card--analysis {
  border-color: var(--border);
}

.cs-card-head {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted2);
}

.cs-analysis-head {
  margin-bottom: 8px;
}

.cs-focus-note {
  margin: 6px 0 0;
  padding-left: 10px;
  border-left: 2px solid var(--border);
  font-size: 0.82rem;
  line-height: 1.58;
  color: var(--muted);
}
body.dark .cs-focus-note {
  border-color: var(--border);
}

.cs-focus-note--active {
  border-color: var(--accent);
  color: var(--text);
}
body.dark .cs-focus-note--active {
  border-color: var(--accent);
}

.cs-header-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.cs-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 99px;
  border: 1px solid;
  display: inline-flex;
  align-items: center;
}

.cs-fig {
  background: var(--bg-alt);
  border: 1px solid var(--border-s);
  border-radius: var(--radius-sm);
  padding: 5px;
  overflow: hidden;
}
body.dark .cs-fig {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--border);
}
.cs-fig svg {
  width: 100%;
  height: auto;
  display: block;
}
.cs-fig img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 6px;
}
.cs-figure-note {
  margin: 8px 0 0;
  font-size: 0.79rem;
  line-height: 1.55;
  color: var(--muted2);
}

.cs-breakdown {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--border-s);
}
body.dark .cs-breakdown {
  border-color: var(--border);
}

.cs-breakdown-row {
  padding: 12px 0;
  border-bottom: 1px solid var(--border-s);
  transition:
    border-color var(--ease),
    transform 0.13s var(--spring);
}

body.dark .cs-breakdown-row {
  border-color: var(--border);
}

.cs-breakdown-row:hover {
  transform: none;
}

.cs-breakdown-row--hit {
  padding-left: 12px;
  border-left: 3px solid var(--accent);
}

body.dark .cs-breakdown-row--hit {
  border-left-color: var(--accent);
}

.cs-breakdown-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 6px;
}

.cs-dim {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 28px;
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid;
  font-size: 0.74rem;
  line-height: 1.3;
}

.cs-dim-k {
  font-size: 0.64rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cs-dim-v {
  font-weight: 600;
  color: var(--text);
}

.cs-dim--why {
  color: var(--why-c);
  background: var(--why-bg);
  border-color: var(--why-border);
}

.cs-dim--how {
  color: var(--how-c);
  background: var(--how-bg);
  border-color: var(--how-border);
}

.cs-dim--what {
  color: var(--what-c);
  background: var(--what-bg);
  border-color: var(--what-border);
}

.cs-breakdown-note {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.62;
  color: var(--muted);
}

.cs-row-tag {
  display: inline-flex;
  margin-top: 6px;
  padding: 0;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--accent);
}

.cs-insights {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border-s);
}
body.dark .cs-insights {
  border-color: var(--border);
}
.cs-insights h5 {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.cs-insights ul {
  margin: 0 0 0 16px;
  padding: 0;
}
.cs-insights li {
  font-size: 0.83rem;
  color: var(--text);
  line-height: 1.6;
  margin-bottom: 6px;
}
.cs-insights li:last-child {
  margin-bottom: 0;
}

/* ── Citation ───────────────────────────────────────────── */
.cite-wrap {
  position: relative;
}
.cite-block {
  background: var(--bg-alt);
  border: 1px solid var(--border-s);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 22px 24px;
  padding-right: 120px;
  font-family: ui-monospace, "Cascadia Code", "Fira Code", "SF Mono",
    "Consolas", monospace;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--text);
  overflow-x: auto;
  white-space: pre;
}
body.dark .cite-block {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--border);
  border-left-color: var(--accent-mid);
  color: var(--muted);
}

.cite-copy {
  position: absolute;
  top: 12px;
  right: 14px;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  background: var(--surface);
  font-size: 12px;
  font-weight: 600;
  color: var(--muted2);
  cursor: pointer;
  font-family: var(--sans);
  transition:
    all var(--ease),
    transform 0.13s var(--spring);
}
.cite-copy:hover {
  background: var(--accent-s);
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-1px);
}

/* ── Side nav dots ──────────────────────────────────────── */
.nav-dots {
  position: fixed;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 400;
}
.nav-dot {
  position: relative;
  width: 6px;
  height: 6px;
  border-radius: 99px;
  background: var(--border);
  cursor: pointer;
  border: none;
  padding: 0;
  transition:
    background 0.2s ease,
    height 0.22s cubic-bezier(0.34, 1.56, 0.64, 1),
    width 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
}
/* Tooltip label on hover */
.nav-dot::before {
  content: attr(title);
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-s);
  border-radius: 5px;
  padding: 3px 9px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.07);
  font-family: var(--sans);
}
.nav-dot:hover::before,
.nav-dot.active::before {
  opacity: 1;
}
.nav-dot:hover {
  background: var(--accent);
  height: 14px;
}
.nav-dot.active {
  background: var(--accent);
  height: 20px;
  width: 6px;
  border-radius: 99px;
}

/* ── Back to top ────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 36px;
  height: 36px;
  background: var(--surface);
  color: var(--muted2);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.22s ease,
    background 0.16s ease,
    color 0.16s ease,
    border-color 0.16s ease,
    transform 0.16s var(--spring);
  z-index: 90;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}
.back-to-top:hover {
  background: var(--accent-s);
  color: var(--accent);
  border-color: var(--accent-mid);
  transform: translateY(-2px);
}
.back-to-top:active {
  transform: scale(0.95);
}
.back-to-top:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ── Footer ─────────────────────────────────────────────── */
.footer {
  position: relative;
  border-top: none;
  padding: 2.5rem 2rem;
  text-align: center;
  color: var(--muted2);
  font-size: 0.77rem;
  line-height: 2;
  background: var(--bg-alt);
  letter-spacing: 0.01em;
}
.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--border) 18%,
    var(--border) 82%,
    transparent 100%
  );
}
body.dark .footer {
  background: var(--bg-alt);
}
.footer a {
  color: var(--muted);
  transition: color var(--ease);
}
.footer a:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* ── Animations ─────────────────────────────────────────── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.fu {
  opacity: 0;
  animation: fadeUp 0.6s cubic-bezier(0.22, 0.9, 0.36, 1) forwards;
}
.d1 {
  animation-delay: 0.08s;
}
.d2 {
  animation-delay: 0.16s;
}
.d3 {
  animation-delay: 0.24s;
}
.d4 {
  animation-delay: 0.32s;
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 960px) {
  .ds-overview,
  .overview-hero {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .ov-grid {
    grid-template-columns: 1fr;
  }
  .ov-card:nth-child(3) {
    border-bottom: 1px solid var(--border-s);
  }
  .ov-card:nth-child(4) {
    border-bottom: none;
  }
  .nav-dots,
  .back-to-top {
    display: none;
  }
  .what-grid {
    grid-template-columns: 1fr;
  }
  .method-shell {
    padding: 18px;
    border-radius: 18px;
  }
  .method-summary {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .method-layout {
    grid-template-columns: 1fr;
  }
  .cs-shell {
    padding: 0;
  }
  .cs-controls-row {
    flex-direction: column;
    align-items: flex-start;
  }
  .cs-status {
    max-width: 54ch;
    width: 100%;
  }
  .cs-panel-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .cs-card--analysis {
    padding-left: 0;
    padding-top: 14px;
    border-left: none;
    border-top: 1px solid var(--border-s);
  }
  body.dark .cs-card--analysis {
    border-color: var(--border);
  }
  .tax-drawer {
    width: 100vw;
    max-width: 100vw;
  }
  .tax-shell {
    padding: 18px;
    border-radius: 18px;
  }
  .tax-controls-row {
    align-items: flex-start;
    flex-direction: column;
  }
  .tax-status {
    max-width: 54ch;
  }
  .drawer-header {
    padding: 16px 16px 12px;
  }
  .drawer-body {
    padding: 18px 16px 24px;
  }
  .drawer-summary-grid {
    grid-template-columns: 1fr;
  }
  .drawer-cs-head-row {
    align-items: flex-start;
  }
  .drawer-nav-inline {
    width: 100%;
    justify-content: space-between;
  }
  .drawer-nav-dots {
    flex: 1;
    justify-content: center;
  }
  .tax-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .ds-top {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .ds-arrow {
    display: none;
  }
  .dsf-grid,
  .dsf-what-cards {
    grid-template-columns: 1fr;
  }
  .dsf-row,
  .dsf-row--how,
  .dsf-how-head {
    grid-template-columns: 1fr;
  }
  .dsf-why-head {
    margin-left: 0;
  }
  .ds-overview-row {
    grid-template-columns: 1fr;
  }
  .ds-arrow-h {
    display: none;
  }
  .ds-node--what {
    max-width: 100%;
  }
}

@media (max-width: 640px) {
  .page {
    padding: 28px 18px 56px;
  }
  .top__inner {
    padding: 10px 18px 8px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }
  .top__actions {
    justify-content: flex-start;
  }
  .sec-title {
    font-size: 1.5rem;
  }
  .stats {
    flex-wrap: wrap;
  }
  .stat {
    flex: 0 0 50%;
    border-bottom: 1px solid var(--border-s);
    padding: 18px 12px;
  }
  .stat:nth-child(even) {
    border-right: none;
  }
  .stat:nth-last-child(-n + 2):not(:nth-child(even)),
  .stat:last-child {
    border-bottom: none;
  }
  .method-shell {
    padding: 16px;
  }
  .method-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .method-card {
    padding: 12px;
  }
  .method-step-head {
    align-items: flex-start;
  }
  .tax-shell {
    padding: 16px;
  }
  .cs-shell {
    padding: 0;
  }
  .cs-tabs {
    width: 100%;
  }
  .cs-tab {
    flex: 1 1 100%;
  }
  .cs-dim {
    width: 100%;
    justify-content: space-between;
  }
  .tax-toolbar-copy {
    padding: 13px 14px;
  }
  .tax-controls {
    width: 100%;
  }
  .tax-filter {
    flex: 1 1 calc(50% - 8px);
  }
  .tax-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contrib-list li {
    font-size: 0.88rem;
  }
}

/* ── Print ──────────────────────────────────────────────── */
@media print {
  .top,
  .nav-dots,
  .back-to-top,
  .toggle-sw,
  .skip-nav {
    display: none !important;
  }
  .fu {
    opacity: 1 !important;
    animation: none !important;
  }
  .page {
    padding: 1rem 0;
  }
  a {
    color: var(--text) !important;
  }
  .btn {
    display: none !important;
  }
  body {
    background: #fff !important;
    color: #000 !important;
  }
}

/* ── Reduced motion ─────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}