/* ═══════════════════════════════════════════════════════════════════
   Shadcn design system — tokens.css (verbatim :root contract)
   Every colour below is a var(); no raw hex outside this block.
   ═══════════════════════════════════════════════════════════════════ */
@import url("https://fonts.googleapis.com/css2?family=Golos+Text:wght@400;500;600;700;800&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;1,400;1,500&display=swap");

:root {
  --bg: #fcfcfb;
  --surface: #ffffff;
  --surface-warm: #ffffff;

  --fg: #171717;
  --fg-2: var(--fg);
  --muted: #6e736f;
  --meta: var(--muted);

  --border: #e7ebe7;
  --border-soft: var(--border);

  --accent: #74b289;
  --accent-on: #171717;
  --accent-hover: color-mix(in oklab, var(--accent), black 9%);
  --accent-active: color-mix(in oklab, var(--accent), black 16%);

  /* Utility accent (#74B289) — links, active nav, case numbers,
     small dividers, icons. */
  --link: #74b289;
  --link-hover: color-mix(in oklab, var(--link), black 22%);

  /* Chip / tag surface (#BBD8BC) with dark-green ink. */
  --chip-bg: #bbd8bc;
  --chip-fg: #35563f;

  /* Blue-green (teal) shades — decorative washes that sit beside the
     green accent: hero corner blob, soft section glows. */
  --accent-teal: #57a9a2;
  --accent-teal-deep: #2f7f88;
  --accent-teal-soft: #c2e2dd;

  --success: #16a34a;
  --warn: #d97706;
  --danger: #dc2626;

  --font-display: "Golos Text", -apple-system, system-ui, "Segoe UI", Arial, sans-serif;
  --font-heading: "Golos Text", -apple-system, system-ui, "Segoe UI", Arial, sans-serif;
  --font-body: "Golos Text", -apple-system, system-ui, "Segoe UI", Arial, sans-serif;
  --font-mono: "Golos Text", -apple-system, system-ui, "Segoe UI", Arial, sans-serif;

  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 20px;
  --text-xl: 24px;
  --text-2xl: 32px;
  --text-3xl: 40px;
  --text-4xl: 48px;

  --leading-body: 1.5;
  --leading-tight: 1.2;
  --tracking-display: -0.02em;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;

  --section-y-desktop: 72px;
  --section-y-tablet: 64px;
  --section-y-phone: 48px;

  --radius-sm: 16px;
  --radius-md: 16px;
  --radius-lg: 16px;
  --radius-pill: 9999px;

  --elev-flat: none;
  --elev-ring: 0 0 0 1px var(--border);
  --elev-raised:
    0 1px 2px rgba(0, 0, 0, 0.03),
    0 8px 24px rgba(0, 0, 0, 0.035);
  --elev-card:
    0 1px 2px rgba(0, 0, 0, 0.03),
    0 8px 24px rgba(0, 0, 0, 0.035);
  --elev-card-hover:
    0 12px 32px rgba(0, 0, 0, 0.05);

  --focus-ring: 0 0 0 2px var(--bg), 0 0 0 4px var(--fg);

  --motion-fast: 150ms;
  --motion-base: 200ms;
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);

  --container-max: 900px;
  --container-gutter-desktop: 24px;
  --container-gutter-tablet: 16px;
  --container-gutter-phone: 16px;
}

/* Derived helpers (not brand tokens — computed from the contract above) */
:root {
  --fg-soft: color-mix(in oklab, var(--fg), transparent 94%);
  --fg-hair: color-mix(in oklab, var(--fg), transparent 78%);
  --accent-soft: color-mix(in oklab, var(--accent), transparent 90%);
  --container-gutter: var(--container-gutter-desktop);
  /* Shared page shell — identical on every page of the site. */
  --content-max: 900px;
  --page-top: 72px;
  --topbar-h: 64px;
}

/* ─── reset & base ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background-color: var(--bg);
  background-image: radial-gradient(color-mix(in oklab, var(--fg), transparent 94%) 1px, transparent 1.1px);
  background-size: 22px 22px;
  background-attachment: fixed;
  color: var(--fg);
  overflow-x: clip;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
p { margin: 0; text-wrap: pretty; }
h1, h2, h3, h4 { margin: 0; text-wrap: balance; }
ul, ol { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: none; box-shadow: var(--focus-ring); border-radius: var(--radius-sm); }
::selection { background: var(--accent); color: var(--accent-on); }

/* ─── layout ───────────────────────────────────────────────────── */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-gutter);
}
.section { padding-block: clamp(56px, 8vw, var(--section-y-desktop)); }
.section-tight { padding-block: clamp(40px, 5vw, var(--section-y-tablet)); }
.divided > * + * { border-top: 1px solid var(--border); }
.stack > * + * { margin-top: var(--space-4); }
.g12 { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--space-6); }
.c3 { grid-column: span 3; } .c4 { grid-column: span 4; } .c5 { grid-column: span 5; }
.c6 { grid-column: span 6; } .c7 { grid-column: span 7; } .c8 { grid-column: span 8; }
.c9 { grid-column: span 9; } .c12 { grid-column: span 12; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-6); }
.row-between { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-6); }
.reading { max-width: none; }
.rule { border: 0; border-top: 1px solid var(--link); margin: 0; }

@media (max-width: 920px) {
  :root { --container-gutter: var(--container-gutter-tablet); }
  .c3, .c4, .c5, .c6, .c7, .c8, .c9 { grid-column: span 12; }
  .g12 { gap: var(--space-8); }
  .grid-2, .grid-3 { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 560px) {
  :root { --container-gutter: var(--container-gutter-phone); }
}

/* ─── type ─────────────────────────────────────────────────────── */
h1, .h1 { font-family: var(--font-heading); font-size: clamp(34px, 4.6vw, 56px); line-height: 1.06; letter-spacing: var(--tracking-display); font-weight: 700; }
h2, .h2 { font-family: var(--font-heading); font-size: clamp(25px, 3vw, 36px); line-height: 1.14; letter-spacing: -0.02em; font-weight: 700; }
h3, .h3 { font-family: var(--font-heading); font-size: var(--text-lg); line-height: 1.35; font-weight: 700; letter-spacing: -0.01em; }
h4, .h4 { font-family: var(--font-heading); font-size: var(--text-base); line-height: 1.4; font-weight: 700; }
.lead { font-size: var(--text-lg); line-height: 1.55; color: var(--muted); }
.lead-sm { font-size: var(--text-base); line-height: 1.6; color: var(--muted); }
.eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--muted);
}
.meta { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.04em; color: var(--muted); }
.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; color: var(--link); }
.muted { color: var(--muted); }
.body-sm { font-size: var(--text-base); line-height: 1.55; }
.text-accent { color: var(--accent); }

/* ─── hero / section heads ─────────────────────────────────────── */
.hero { padding-top: var(--page-top); padding-bottom: clamp(48px, 6vw, 88px); }
.hero-cta { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-8); justify-content: flex-start; }
.section-head { display: flex; flex-direction: column; align-items: flex-start; gap: var(--space-4); max-width: none; margin-inline: 0; text-align: left; }
.section-head-wide { max-width: none; }
.hero-inner { max-width: none; margin-inline: 0; text-align: left; }
.avatar {
  width: 50px; height: 50px; border-radius: var(--radius-sm);
  background: var(--fg); color: var(--bg);
  display: grid; place-items: center; margin-inline: auto;
  font-family: var(--font-display); font-weight: 700; font-size: var(--text-lg);
  letter-spacing: 0; overflow: hidden;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.hero-role { margin-top: 10px; font-family: var(--font-display); font-size: clamp(18px, 2.2vw, 24px); font-weight: 600; color: var(--muted); letter-spacing: -0.01em; }
.hero-tags { justify-content: flex-start; margin-top: var(--space-4); }
.hero .lead { margin-inline: 0; }
.center-col { max-width: none; margin-inline: 0; }
.reading-center { max-width: none; margin-inline: 0; text-align: left; }

/* ─── top bar navigation + shared page shell ───────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 60;
  width: 100%;
  max-width: none;
  margin: 0;
  background: var(--fg);
  border: 0;
  border-radius: 0;
  overflow: hidden;
  box-shadow: none;
}
.topbar-inner {
  padding-inline: var(--container-gutter);
  min-height: var(--topbar-h);
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-4);
}
.topbar-links { display: flex; align-items: center; gap: var(--space-5); }
.topbar-links a {
  font-size: var(--text-sm);
  color: color-mix(in oklab, var(--surface), transparent 38%);
  transition: color var(--motion-fast) var(--ease-standard);
}
.topbar-links a:hover { color: var(--surface); }
.topbar-links a[aria-current="page"] { color: var(--surface); font-weight: 600; }
.topbar-contacts { display: flex; align-items: center; gap: var(--space-5); }
.topbar-contacts a {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: var(--text-sm);
  color: color-mix(in oklab, var(--surface), transparent 38%);
  white-space: nowrap;
  transition: color var(--motion-fast) var(--ease-standard);
}
.topbar-contacts a:hover { color: var(--surface); }
.topbar-contacts .material-symbols-outlined { font-size: 20px; line-height: 1; color: var(--accent); }
.topbar-email .material-symbols-outlined { font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 24; }
.topbar-contacts .topbar-icon { justify-content: center; }
.topbar-contacts .topbar-telegram svg { width: 20px; height: 20px; display: block; color: var(--accent); }
.topbar a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* content sits above decorative layers; the sticky topbar keeps its own z-index */
main, .pagefoot { position: relative; z-index: 1; }
/* Content column centred in the viewport, equal side margins. */
main .container,
.pagefoot .container { max-width: calc(var(--content-max) + 2 * var(--container-gutter)); margin-inline: auto; padding-inline: var(--container-gutter); }

@media (max-width: 768px) {
  .topbar-inner { padding-inline: var(--container-gutter-tablet); }
  .topbar-links { gap: var(--space-4); }
  .topbar-contacts { gap: var(--space-4); }
  .topbar-contacts .topbar-phone { display: none; }
  main .container, .pagefoot .container { padding-inline: var(--container-gutter); }
}

/* ─── buttons ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 10px 18px;
  border-radius: var(--radius-sm); border: 1px solid transparent;
  font-size: var(--text-sm); font-weight: 500; letter-spacing: -0.005em;
  white-space: nowrap;
  transition: background var(--motion-fast) var(--ease-standard),
              border-color var(--motion-fast) var(--ease-standard),
              color var(--motion-fast) var(--ease-standard);
}
.btn-primary { background: var(--accent); color: var(--accent-on); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-primary:active { background: var(--accent-active); border-color: var(--accent-active); }
.btn-secondary { background: var(--surface); color: var(--fg); border-color: var(--border); }
.btn-secondary:hover { border-color: var(--fg-hair); background: var(--fg-soft); }
.btn-ghost { background: transparent; color: var(--fg); border-color: transparent; padding-inline: 10px; }
.btn-ghost:hover { background: var(--fg-soft); }
.btn-ghost svg { color: var(--link); }
.btn-sm { min-height: 36px; padding: 7px 14px; }
.btn-block { width: 100%; }
.btn-arrow::after { content: "\2192"; transition: transform var(--motion-fast) var(--ease-standard); }
.btn-arrow:hover::after { transform: translateX(3px); }
.btn-down::after { content: "\2193"; transition: transform var(--motion-fast) var(--ease-standard); }
.btn-down:hover::after { transform: translateY(2px); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* ─── cards ────────────────────────────────────────────────────── */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: var(--space-6);
}
.card-flat { background: transparent; border: 0; padding: 0; }
.card-rule { border: 0; border-top: 1px solid var(--fg); border-radius: 0; padding: var(--space-5) 0 0; background: transparent; }
a.card { display: block; transition: border-color var(--motion-fast) var(--ease-standard), box-shadow var(--motion-fast) var(--ease-standard); }
a.card:hover { border-color: var(--fg-hair); box-shadow: var(--elev-raised); }

/* ─── case card ────────────────────────────────────────────────── */
.case-card {
  display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 18px; overflow: hidden;
  box-shadow: var(--elev-card);
  transition: border-color var(--motion-fast) var(--ease-standard),
              box-shadow var(--motion-base) var(--ease-standard),
              transform var(--motion-base) var(--ease-standard);
}
.case-card:hover { border-color: var(--border); box-shadow: var(--elev-card-hover); transform: translateY(-2px); }
.case-media { aspect-ratio: 3 / 2; background: var(--surface-warm); border-bottom: 1px solid var(--border); display: grid; place-items: start; padding: var(--space-6); }
.case-media img { width: 100%; height: 100%; object-fit: cover; }
.media-ph { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; color: var(--muted); text-align: left; }
.media-ph-mark {
  width: 40px; height: 40px; border-radius: var(--radius-sm);
  border: 1px solid var(--link); background: var(--bg);
  display: grid; place-items: center; color: var(--link);
}
.media-ph-mark svg { width: 18px; height: 18px; }
.media-ph-label { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.02em; }
.case-body { display: flex; flex-direction: column; gap: var(--space-3); padding: var(--space-6); flex: 1 1 auto; }
.case-top { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); }
.case-top .meta { color: var(--link); }
.case-card h3 { font-size: var(--text-xl); }
.case-problem { color: var(--muted); font-size: var(--text-base); line-height: 1.6; }
.case-result { margin-top: auto; padding-top: var(--space-4); }
.case-fields {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4) var(--space-5);
  margin-top: auto; padding-top: var(--space-4); border-top: 1px solid var(--border);
}
.case-fields.wide { grid-template-columns: 1fr; }
.case-fields .wide-field { grid-column: 1 / -1; }
.case-fields dt { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.02em; color: var(--muted); }
.case-fields dd { margin: 5px 0 0; font-size: var(--text-base); line-height: 1.45; }
.case-fields .result { font-weight: 500; }
.hidden { display: none !important; }

/* ─── filters / chips ──────────────────────────────────────────── */
.filters { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.chip {
  display: inline-flex; align-items: center; min-height: 44px; padding: 8px 16px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--muted); font-size: var(--text-sm);
  transition: color var(--motion-fast) var(--ease-standard), border-color var(--motion-fast) var(--ease-standard), background var(--motion-fast) var(--ease-standard);
}
.chip:hover { color: var(--fg); border-color: var(--fg-hair); }
.chip[aria-pressed="true"] { background: var(--accent); color: var(--accent-on); border-color: var(--accent); }

/* ─── log rows (articles, experience) ──────────────────────────── */
.log { border-top: 1px solid var(--link); }
.log-row {
  display: grid; grid-template-columns: 148px minmax(0, 1fr) auto;
  gap: var(--space-6); align-items: baseline;
  padding: var(--space-5) var(--space-3); margin-inline: calc(var(--space-3) * -1);
  border-bottom: 1px solid var(--link);
  transition: background var(--motion-fast) var(--ease-standard);
}
a.log-row:hover { background: var(--fg-soft); }
.log-row .log-date { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.04em; color: var(--muted); }
.log-row h3 { font-size: var(--text-base); }
.log-row p { margin-top: 4px; color: var(--muted); font-size: var(--text-base); line-height: 1.5; }
.log-row .pull { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--muted); text-align: right; }
@media (max-width: 720px) {
  .log-row { grid-template-columns: 1fr; gap: var(--space-2); }
  .log-row .pull, .log-row .log-date { text-align: left; }
}

/* ─── experience accordion ─────────────────────────────────────── */
.exp { border-top: 1px solid var(--link); }
.exp-item { border-bottom: 1px solid var(--link); }
.exp-summary {
  display: grid; grid-template-columns: 52px minmax(0, 1fr) auto 18px;
  align-items: center; gap: var(--space-5);
  padding: var(--space-5) var(--space-3); margin-inline: calc(var(--space-3) * -1);
  cursor: pointer; list-style: none;
  transition: background var(--motion-fast) var(--ease-standard);
}
.exp-summary:hover { background: var(--fg-soft); }
.exp-summary::-webkit-details-marker { display: none; }
.exp-summary:focus-visible { border-radius: var(--radius-sm); }
.exp-logo {
  width: 52px; height: 52px; border-radius: var(--radius-md);
  border: 1px solid var(--border); background: var(--surface);
  display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 700; font-size: var(--text-lg);
  color: var(--fg);
}
.exp-head { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.exp-company { font-family: var(--font-display); font-size: var(--text-lg); font-weight: 500; letter-spacing: -0.01em; }
.exp-role { font-size: var(--text-base); color: var(--muted); }
.exp-period { font-family: var(--font-mono); font-size: var(--text-base); color: var(--muted); text-align: right; white-space: nowrap; }
.exp-chevron { width: 16px; height: 16px; color: var(--link); transition: transform var(--motion-base) var(--ease-standard); }
.exp-item[open] .exp-chevron { transform: rotate(180deg); }
.exp-item[open] .exp-summary { background: var(--fg-soft); }
.exp-body {
  display: grid; gap: var(--space-5); max-width: none;
  padding: 0 var(--space-3) var(--space-8) calc(52px + var(--space-5) + var(--space-3));
}
.exp-body p { color: var(--muted); font-size: var(--text-base); line-height: 1.65; }
.exp-body ul { display: grid; gap: var(--space-2); }
.exp-body li { position: relative; padding-left: 18px; color: var(--muted); font-size: var(--text-base); line-height: 1.6; }
.exp-body li::before { content: ""; position: absolute; left: 0; top: 9px; width: 5px; height: 5px; border-radius: 50%; background: var(--fg); }
@media (max-width: 640px) {
  .exp-summary { grid-template-columns: 44px minmax(0, 1fr); gap: var(--space-4); }
  .exp-logo { width: 44px; height: 44px; font-size: var(--text-base); }
  .exp-period { grid-column: 2; text-align: left; }
  .exp-chevron { display: none; }
  .exp-body { padding-left: var(--space-3); padding-bottom: var(--space-6); }
}

/* ─── features / stats ─────────────────────────────────────────── */
.feature .feature-mark {
  width: 36px; height: 36px; display: grid; place-items: center;
  border: 1px solid var(--link); border-radius: var(--radius-sm);
  color: var(--link); margin-bottom: var(--space-4);
}
.feature .feature-mark svg { width: 18px; height: 18px; }
.feature h3 { margin-bottom: 6px; }
.feature p { color: var(--muted); font-size: var(--text-base); line-height: 1.55; }
.stat .stat-num { font-family: var(--font-display); font-size: clamp(40px, 5vw, 60px); line-height: 1; letter-spacing: -0.03em; font-weight: 600; }
.stat .stat-unit { font-size: 0.5em; color: var(--muted); margin-left: 2px; }
.stat .stat-label { margin-top: 10px; color: var(--muted); font-size: var(--text-base); max-width: none; line-height: 1.5; }

/* ─── pills / tags ─────────────────────────────────────────────── */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: var(--radius-pill);
  background: var(--fg-soft); color: var(--fg);
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.02em;
}
.tag {
  display: inline-flex; align-items: center; padding: 5px 12px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--fg); font-size: var(--text-xs);
}
.tag-accent {
  background: var(--chip-bg); border-color: var(--chip-bg); color: var(--chip-fg);
  font-weight: 600; letter-spacing: -0.005em;
}
.tag-list { display: flex; flex-wrap: wrap; gap: var(--space-2); }

/* ─── portrait / image placeholders ────────────────────────────── */
.portrait {
  position: relative; width: 100%; aspect-ratio: 4 / 5;
  border: 1px solid var(--border); border-radius: var(--radius-md);
  background: var(--surface-warm); overflow: hidden;
  display: grid; place-items: center; color: var(--muted);
}
.portrait::before { content: none; }
.portrait .monogram { position: relative; font-family: var(--font-display); font-size: clamp(44px, 6vw, 76px); font-weight: 600; letter-spacing: -0.02em; color: var(--muted); }
.portrait .ph-label {
  position: absolute; left: 12px; bottom: 12px; z-index: 1;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.04em;
  color: var(--muted);
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-pill);
  padding: 3px 8px;
}
.portrait.square { aspect-ratio: 1 / 1; }
.content-img { display: block; max-width: 100%; max-height: min(70vh, 680px); width: auto; height: auto; object-fit: contain; border-radius: var(--radius-md); }

/* ─── callout ──────────────────────────────────────────────────── */
.callout {
  border: 1px solid var(--border); border-left: 3px solid var(--fg);
  border-radius: var(--radius-sm); padding: var(--space-5) var(--space-6);
  background: var(--surface-warm);
}
.callout .callout-label { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.02em; color: var(--muted); }

/* ─── data bars ────────────────────────────────────────────────── */
.bars { display: flex; flex-direction: column; gap: var(--space-4); }
.bar-row { display: grid; grid-template-columns: 190px minmax(0, 1fr) 52px; gap: var(--space-4); align-items: center; font-size: var(--text-base); }
.bar-track { height: 10px; background: var(--fg-soft); border-radius: var(--radius-pill); overflow: hidden; }
.bar-fill { height: 100%; background: var(--fg); border-radius: var(--radius-pill); }
.bar-row .bar-val { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--muted); text-align: right; }
@media (max-width: 720px) { .bar-row { grid-template-columns: 1fr; gap: 6px; } .bar-row .bar-val { text-align: left; } }

/* ─── flow diagram ─────────────────────────────────────────────── */
.diagram { border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface-warm); padding: var(--space-6); }
.flow { display: flex; align-items: stretch; gap: var(--space-3); flex-wrap: wrap; }
.flow-node { flex: 1 1 130px; min-width: 120px; border: 1px solid var(--border); background: var(--bg); border-radius: var(--radius-sm); padding: var(--space-4); }
.flow-node .flow-n { display: block; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em; color: var(--link); margin-bottom: 8px; }
.flow-node .flow-t { font-size: var(--text-base); font-weight: 500; }
.flow-node.is-focus { border-color: var(--fg); }
.flow-node.is-focus .flow-t { font-weight: 600; }
.wire { display: grid; gap: var(--space-3); }
.wire-head { display: flex; gap: var(--space-3); }
.wire-block { height: 12px; border-radius: var(--radius-pill); background: var(--fg-soft); }
.wire-block.deep { background: color-mix(in oklab, var(--fg), transparent 84%); }
.wire-panel { border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg); padding: var(--space-4); display: grid; gap: var(--space-3); }
.wire-grid { display: grid; grid-template-columns: 2fr 1fr; gap: var(--space-3); }
.wire-box { border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface-warm); height: 84px; }

/* ─── split / media blocks ─────────────────────────────────────── */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
.split.wide-left { grid-template-columns: 1.3fr 1fr; }
@media (max-width: 920px) { .split, .split.wide-left { grid-template-columns: minmax(0, 1fr); } }

/* ─── case study layout ────────────────────────────────────────── */
.case-layout { display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: clamp(32px, 6vw, 56px); align-items: start; }
.toc {
  position: sticky; top: 96px;
  display: flex; flex-direction: column; gap: 2px;
}
.toc-title { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.02em; color: var(--muted); margin-bottom: var(--space-3); }
.toc a {
  font-size: var(--text-sm); color: var(--muted);
  padding: 5px 0 5px 12px; border-left: 1px solid var(--border);
  transition: color var(--motion-fast) var(--ease-standard), border-color var(--motion-fast) var(--ease-standard);
}
.toc a:hover { color: var(--link-hover); }
.toc a.active { color: var(--link); border-left-color: var(--link); font-weight: 500; }
@media (max-width: 1000px) { .case-layout { grid-template-columns: minmax(0, 1fr); } .toc { display: none; } }

.prose > * + * { margin-top: var(--space-5); }
.prose section + section { margin-top: var(--space-12); }
.prose section > * + * { margin-top: var(--space-5); }
.prose h2 { margin-top: 0; }
.prose p { line-height: 1.7; }
.prose a { color: var(--link); text-decoration: underline; text-underline-offset: 3px; }
.prose a:hover { color: var(--link-hover); }
.prose ul { display: grid; gap: var(--space-3); }
.prose ul li { position: relative; padding-left: 22px; line-height: 1.6; }
.prose ul li::before { content: ""; position: absolute; left: 0; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--fg); }
.section-num { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.08em; color: var(--link); display: block; margin-bottom: var(--space-3); }
.anchor-offset { scroll-margin-top: 96px; }

/* ─── case figures / tables ────────────────────────────────────── */
.fig { margin: 0; }
.fig-media {
  position: relative; display: block; width: 100%; margin: 0; padding: 0;
  border: 1px solid var(--border); border-radius: var(--radius-md);
  background: var(--surface-warm); overflow: hidden; cursor: zoom-in;
  text-decoration: none; color: inherit;
  transition: border-color var(--motion-fast) var(--ease-standard);
}
.fig-media img { display: block; width: 100%; height: auto; }
.fig-media:hover { border-color: var(--fg-hair); }
.fig-media:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.fig figcaption {
  margin-top: var(--space-3); font-family: var(--font-mono);
  font-size: var(--text-xs); letter-spacing: 0.02em; color: var(--muted); line-height: 1.5;
}
.fig-ph {
  display: grid; place-items: center; gap: 10px; min-height: 300px;
  padding: var(--space-8); text-align: center;
  border: 1px dashed var(--border); border-radius: var(--radius-md);
  background: var(--surface-warm); color: var(--muted);
}
.fig-ph .media-ph { align-items: center; }

.case-table-wrap { overflow-x: auto; }
.case-table { width: 100%; border-collapse: collapse; font-size: var(--text-base); }
.case-table th,
.case-table td {
  text-align: left; vertical-align: top;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
}
.case-table th {
  font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 400;
  letter-spacing: 0.02em; color: var(--muted); white-space: nowrap;
}
.case-table td { line-height: 1.55; }
.case-table td:first-child { width: 46%; }
.case-table tr:last-child td { border-bottom: 0; }
@media (max-width: 720px) {
  .case-table thead { display: none; }
  .case-table { border-collapse: separate; }
  .case-table, .case-table tbody, .case-table tr, .case-table td { display: block; width: auto; }
  .case-table tbody { display: grid; gap: var(--space-4); }
  .case-table tr {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    overflow: hidden;
  }
  .case-table td {
    width: 100%;
    padding: var(--space-4) var(--space-5);
    border-bottom: 0;
  }
  .case-table td:first-child {
    width: 100%;
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border);
    background: var(--surface-warm);
    font-weight: 500;
    color: var(--fg);
  }
  .case-table tr:last-child td:first-child { border-bottom: 1px solid var(--border); }
}

/* ─── lightbox ─────────────────────────────────────────────────── */
body.lightbox-open { overflow: hidden; }
.lightbox {
  position: fixed; inset: 0; z-index: 100; display: none;
  align-items: center; justify-content: center;
  padding: clamp(16px, 4vw, 48px);
  background: color-mix(in oklab, var(--fg), transparent 8%);
  touch-action: none; overflow: hidden;
}
.lightbox.is-open { display: flex; }
.lightbox img {
  max-width: 100%; max-height: 100%; width: auto; height: auto;
  border-radius: var(--radius-md); background: var(--bg);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  transform-origin: center center; will-change: transform;
  -webkit-user-select: none; user-select: none;
}
.lightbox img:active { cursor: grabbing; }
.lightbox-zoom {
  position: fixed; bottom: 20px; right: 20px; z-index: 102;
  display: flex; align-items: center; gap: 2px;
  padding: 4px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg); box-shadow: var(--elev-card);
}
.lightbox-zoom-btn {
  width: 36px; height: 36px; display: grid; place-items: center;
  padding: 0; border: 0; border-radius: calc(var(--radius-sm) - 6px);
  background: none; color: var(--fg); cursor: pointer;
  transition: background var(--motion-fast) var(--ease-standard);
}
.lightbox-zoom-btn:hover { background: var(--surface-warm); }
.lightbox-zoom-btn:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.lightbox-zoom-btn:disabled { opacity: 0.4; cursor: default; }
.lightbox-zoom-level {
  min-width: 46px; text-align: center;
  font-family: var(--font-mono); font-size: var(--text-xs); color: var(--muted);
  font-variant-numeric: tabular-nums;
}
@media (max-width: 560px) {
  .lightbox-zoom { bottom: 16px; right: 16px; }
  .lightbox-zoom-btn { width: 32px; height: 32px; }
  .lightbox-counter { bottom: 20px; }
}
.lightbox-close {
  position: fixed; top: 16px; right: 16px; z-index: 3;
  width: 44px; height: 44px; display: grid; place-items: center;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg); color: var(--fg); cursor: pointer;
}
.lightbox-close:hover { border-color: var(--fg-hair); }
.lightbox-nav {
  position: fixed; top: 50%; transform: translateY(-50%); z-index: 3;
  width: 48px; height: 48px; display: grid; place-items: center;
  border: 1px solid var(--border); border-radius: 50%;
  background: var(--bg); color: var(--fg); cursor: pointer;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}
.lightbox-nav:hover { color: var(--link); }
.lightbox-nav[hidden] { display: none; }
.lightbox-prev { left: clamp(12px, 3vw, 40px); }
.lightbox-next { right: clamp(12px, 3vw, 40px); }
.lightbox-counter {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 3;
  padding: 4px 12px; border-radius: 999px;
  background: color-mix(in oklab, var(--bg), transparent 12%);
  color: var(--fg); font-size: var(--text-xs); letter-spacing: 0.02em;
}
.lightbox-counter[hidden] { display: none; }

/* ─── contact ──────────────────────────────────────────────────── */
.contact-row {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  padding: var(--space-5) 0; border-top: 1px solid var(--link);
}
.contact-row .contact-label { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.02em; color: var(--muted); flex: 0 0 96px; }
.contact-row .contact-value { font-size: var(--text-lg); font-weight: 500; flex: 1 1 auto; }
.contact-row a.contact-value { color: var(--link); }
.contact-row a.contact-value:hover { color: var(--link-hover); text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 620px) {
  .contact-row { flex-wrap: wrap; }
  .contact-row .contact-label { flex-basis: 100%; }
  .contact-row .contact-value { font-size: var(--text-base); flex-basis: 100%; }
  .contact-row .btn { margin-top: 4px; }
}

/* ─── footer ───────────────────────────────────────────────────── */
.pagefoot { padding-block: var(--space-12); color: var(--muted); font-size: var(--text-sm); }
.pagefoot .row-between { flex-wrap: wrap; gap: var(--space-4); }
.pagefoot a { color: var(--link); }
.pagefoot a:hover { color: var(--link-hover); }
/* single centered contact line used on every page */
.pagefoot .pagefoot-line {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 2px var(--space-3); text-align: center;
  color: var(--muted); font-size: var(--text-sm);
}
.pagefoot .pagefoot-line a { color: var(--muted); }
.pagefoot .pagefoot-line a:hover { color: var(--fg); }
.pagefoot .pagefoot-line .sep {
  display: inline-block;
  width: 4px; height: 4px;
  border-radius: var(--radius-pill);
  background: var(--accent);
  font-size: 0; line-height: 0;
  vertical-align: middle;
}

/* ─── reveal motion (only when JS is active) ───────────────────── */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.5s var(--ease-standard), transform 0.5s var(--ease-standard); }
.js .reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  * { transition-duration: 0.001ms !important; }
}

/* ─── toast ────────────────────────────────────────────────────── */
.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 12px);
  background: var(--fg); color: var(--bg);
  border-radius: var(--radius-sm); padding: 10px 18px;
  font-size: var(--text-sm); opacity: 0; pointer-events: none;
  transition: opacity var(--motion-base) var(--ease-standard), transform var(--motion-base) var(--ease-standard);
  z-index: 100;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ─── mobile adaptation ────────────────────────────────────────── */
/* On phones/tablets every text block, card, heading and single image
   spans the full screen width; only image carousels scroll
   horizontally. The 900px desktop measure above stays untouched. */
@media (max-width: 768px) {
  html, body { overflow-x: clip; }
  main, .pagefoot { overflow-x: clip; }

  /* full-width shell — drop the desktop cap, keep one safe gutter */
  main .container,
  .pagefoot .container { max-width: 100%; }

  /* text, headings, cards and lists fill the column edge to edge */
  main .container > *,
  main .container .reading,
  main .container .reading-center,
  main .container .center-col,
  main .container .section-head,
  main .container .hero-inner,
  main .container .prose,
  main .container .hypo-card,
  main .container .card,
  main .container .case-card,
  main .container .fig,
  main .container .case-table-wrap,
  main .container .tag-list,
  main .container h1,
  main .container h2,
  main .container h3,
  main .container h4,
  main .container p,
  main .container ul,
  main .container ol {
    max-width: 100%;
    width: 100%;
  }

  /* buttons hug their content — never stretched across the column */
  main .container .btn:not(.btn-block) { width: auto; max-width: 100%; }

  /* the hero avatar keeps its fixed desktop size — never stretched */
  main .container > .hero-photo { width: 64px; max-width: 64px; height: 64px; }
  main .container > .hero-photo img { width: 100%; height: 100%; object-fit: cover; }

  /* single (non-carousel) images fill the width, keeping their ratio */
  main .container .fig-media,
  main .container .fig-media img,
  main .container .content-img,
  main .container .case-hero,
  main .container .case-media,
  main .container .case-media img,
  main .container .portrait {
    width: 100%;
    max-width: 100%;
    height: auto;
  }

  /* collapse every multi-column layout to a single column.
     minmax(0, 1fr) — not 1fr — so wide content (carousels, tables)
     cannot force the track past the viewport and clip the text. */
  main .grid-2,
  main .grid-3,
  main .g12,
  main .split,
  main .split.wide-left,
  main .case-layout,
  main .case-fields,
  main .wire-grid { grid-template-columns: minmax(0, 1fr); }

  /* horizontal scrolling is reserved for image carousels only */
  main .carousel,
  main .carousel-viewport { overflow-x: clip; }
  main .carousel-track { overflow-x: auto; }
}

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