:root {
  --color-bg: #f5efe3;
  --color-surface: #fff9ec;
  --color-surface-alt: #e9dfcd;
  --color-text: #191a1f;
  --color-muted: #68645d;
  --color-primary: #2038ff;
  --color-primary-dark: #111a79;
  --color-secondary: #25302f;
  --color-accent: #ccff66;
  --color-border: #2b2b2b;
  --color-danger: #e35d3e;
  --color-ink-soft: rgba(25, 26, 31, .08);
  --font-heading: Georgia, 'Times New Roman', serif;
  --font-body: Inter, Arial, Helvetica, sans-serif;
  --font-code: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 28px;
  --shadow-soft: 0 24px 70px rgba(25, 26, 31, .14);
  --shadow-ink: 8px 8px 0 #191a1f;
  --container: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background:
    radial-gradient(circle at 12% 6%, rgba(204, 255, 102, .35) 0 8rem, transparent 9rem),
    linear-gradient(90deg, rgba(25,26,31,.04) 1px, transparent 1px),
    linear-gradient(0deg, rgba(25,26,31,.04) 1px, transparent 1px),
    var(--color-bg);
  background-size: auto, 42px 42px, 42px 42px, auto;
  line-height: 1.6;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .18;
  background-image: linear-gradient(115deg, transparent 0 48%, rgba(25,26,31,.06) 49% 50%, transparent 51% 100%);
  background-size: 18px 18px;
  z-index: -1;
}
img, svg { max-width: 100%; height: auto; }
a { color: var(--color-primary-dark); text-decoration-thickness: .12em; text-underline-offset: .18em; }
a:hover { color: var(--color-primary); }
:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 4px; border-radius: 6px; }

.container { width: min(var(--container), calc(100% - 32px)); margin-inline: auto; }
.skip-link { position: absolute; left: -999px; top: 12px; background: var(--color-accent); color: var(--color-text); padding: 10px 14px; z-index: 20; }
.skip-link:focus { left: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(245, 239, 227, .88);
  backdrop-filter: blur(14px);
  border-bottom: 2px solid rgba(25,26,31,.16);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 15px 0; }
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--color-text); font-weight: 850; text-decoration: none; letter-spacing: -.03em; }
.logo-mark { width: 42px; height: 42px; border: 2px solid var(--color-border); border-radius: 50%; display: grid; place-items: center; background: var(--color-accent); box-shadow: 4px 4px 0 var(--color-text); position: relative; }
.logo-mark::after { content: ''; width: 14px; height: 2px; background: var(--color-text); transform: rotate(38deg); position: absolute; right: -6px; bottom: 5px; border-radius: 2px; }
.logo-text span { font-family: var(--font-code); font-size: .72rem; display: block; color: var(--color-muted); letter-spacing: .06em; margin-top: -4px; }
.nav { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; justify-content: flex-end; }
.nav a { color: var(--color-text); text-decoration: none; font-size: .94rem; padding: 9px 11px; border: 1px solid transparent; border-radius: 999px; }
.nav a:hover, .nav a[aria-current='page'] { border-color: var(--color-border); background: var(--color-surface); box-shadow: 3px 3px 0 rgba(25,26,31,.16); }

main { overflow: hidden; }
section { padding: clamp(48px, 8vw, 96px) 0; }
.section-tight { padding-top: 42px; }
.kicker { font-family: var(--font-code); text-transform: uppercase; letter-spacing: .12em; font-size: .74rem; color: var(--color-primary-dark); font-weight: 800; }
h1, h2, h3 { font-family: var(--font-heading); line-height: 1.05; margin: 0; letter-spacing: -.035em; }
h1 { font-size: clamp(3rem, 8vw, 7.2rem); }
h2 { font-size: clamp(2rem, 5vw, 4.2rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.75rem); }
p { margin: 0; }
.lead { font-size: clamp(1.08rem, 2vw, 1.38rem); color: #34322f; max-width: 760px; }
.muted { color: var(--color-muted); }
.text-grid { display: grid; gap: 18px; max-width: 860px; }

.button-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.btn { display: inline-flex; align-items: center; gap: 9px; border: 2px solid var(--color-border); padding: 12px 18px; border-radius: 999px; background: var(--color-accent); color: var(--color-text); font-weight: 820; text-decoration: none; box-shadow: 5px 5px 0 var(--color-text); transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
.btn:hover { transform: translate(3px, 3px); box-shadow: 2px 2px 0 var(--color-text); color: var(--color-text); background: #dfff83; }
.btn-secondary { background: var(--color-surface); box-shadow: none; }
.btn-secondary:hover { background: #fffdf6; box-shadow: 3px 3px 0 var(--color-text); }

/* thematic components */
.lens-panel {
  position: relative;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  border-radius: 50%;
  aspect-ratio: 1;
  min-height: 320px;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-ink);
  overflow: hidden;
}
.lens-panel::before, .lens-panel::after { content: ''; position: absolute; border-radius: 50%; pointer-events: none; }
.lens-panel::before { inset: 12%; border: 1px dashed rgba(25,26,31,.4); animation: slow-spin 28s linear infinite; }
.lens-panel::after { inset: 0; background: repeating-linear-gradient(0deg, transparent 0 15px, rgba(32,56,255,.07) 16px 17px); mix-blend-mode: multiply; }
.lens-readout { position: relative; z-index: 1; width: 76%; display: grid; gap: 14px; }
.readout-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: center; padding: 11px 13px; background: rgba(255,249,236,.84); border: 1px solid var(--color-border); font-family: var(--font-code); font-size: .8rem; }
.readout-row strong { color: var(--color-primary-dark); }
.scan-line { height: 8px; background: linear-gradient(90deg, var(--color-accent), transparent); border: 1px solid var(--color-border); }

.evidence-tag { display: inline-flex; align-items: center; gap: 8px; width: max-content; padding: 6px 10px; border: 1px solid var(--color-border); background: var(--color-surface); font-family: var(--font-code); font-size: .76rem; text-transform: uppercase; letter-spacing: .08em; transform: rotate(-1deg); }
.evidence-tag::before { content: ''; width: 10px; height: 10px; background: var(--color-accent); border: 1px solid var(--color-border); border-radius: 50%; }

.verdict-scale { border: 2px solid var(--color-border); background: var(--color-surface); padding: 18px; box-shadow: 6px 6px 0 rgba(25,26,31,.12); display: grid; gap: 10px; }
.verdict-scale__bar { height: 16px; border: 1px solid var(--color-border); background: linear-gradient(90deg, #f18b61 0 28%, #f5d463 28% 62%, var(--color-accent) 62% 100%); position: relative; }
.verdict-scale__bar::after { content: ''; position: absolute; left: var(--score, 76%); top: -6px; width: 8px; height: 28px; background: var(--color-primary); border: 1px solid var(--color-border); transform: translateX(-50%); }
.verdict-scale__labels { display: flex; justify-content: space-between; font-family: var(--font-code); font-size: .72rem; color: var(--color-muted); }

.signal-log { border-left: 2px solid var(--color-border); display: grid; gap: 18px; padding-left: 18px; }
.signal-log__item { position: relative; background: var(--color-surface); border: 1px solid var(--color-border); padding: 16px; }
.signal-log__item::before { content: ''; position: absolute; left: -28px; top: 16px; width: 15px; height: 15px; border-radius: 50%; background: var(--color-accent); border: 2px solid var(--color-border); }
.signal-log time { font-family: var(--font-code); font-size: .75rem; color: var(--color-primary-dark); font-weight: 800; }

.specimen-card { border: 2px solid var(--color-border); background: var(--color-surface); padding: 18px; position: relative; display: grid; gap: 16px; min-height: 100%; }
.specimen-card::before { content: attr(data-code); position: absolute; right: 12px; top: -12px; padding: 2px 8px; border: 1px solid var(--color-border); background: var(--color-accent); font-family: var(--font-code); font-size: .72rem; }
.specimen-card header { display: flex; justify-content: space-between; align-items: flex-start; gap: 14px; }
.specimen-card .icon-box { width: 54px; height: 54px; border: 1px solid var(--color-border); background: var(--color-surface-alt); display: grid; place-items: center; flex: 0 0 auto; }
.specimen-card ul { margin: 0; padding-left: 18px; color: var(--color-muted); }
.specimen-card:hover { transform: translateY(-4px) rotate(.4deg); box-shadow: 6px 6px 0 rgba(25,26,31,.18); transition: .18s ease; }

.compare-slit { border: 2px solid var(--color-border); background: repeating-linear-gradient(90deg, var(--color-surface) 0 24px, #f2eadc 24px 48px); padding: 16px; display: grid; gap: 12px; }
.compare-slit__row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; align-items: stretch; }
.compare-slit__cell { border: 1px solid var(--color-border); padding: 12px; background: rgba(255,249,236,.88); }
.compare-slit__cell:first-child { font-weight: 800; font-family: var(--font-code); color: var(--color-primary-dark); }

.protocol-step { display: grid; grid-template-columns: 64px 1fr; gap: 18px; align-items: start; }
.protocol-step__num { width: 64px; height: 64px; display: grid; place-items: center; border-radius: 50%; border: 2px solid var(--color-border); background: var(--color-accent); font-family: var(--font-code); font-weight: 900; box-shadow: 4px 4px 0 var(--color-text); }
.protocol-step__body { border: 1px solid var(--color-border); background: var(--color-surface); padding: 18px; }

/* layouts */
.hero-home { padding-top: clamp(42px, 7vw, 86px); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: clamp(28px, 6vw, 70px); }
.hero-copy { display: grid; gap: 22px; }
.hero-title span { display: block; }
.hero-title .outline { color: transparent; -webkit-text-stroke: 1.5px var(--color-text); text-shadow: none; }
.hero-note { border-left: 4px solid var(--color-primary); padding-left: 16px; color: var(--color-muted); max-width: 680px; }
.metrics-strip { display: grid; grid-template-columns: repeat(4, 1fr); border: 2px solid var(--color-border); background: var(--color-surface); margin-top: 34px; }
.metric { padding: 18px; border-right: 1px solid var(--color-border); }
.metric:last-child { border-right: 0; }
.metric strong { display: block; font-family: var(--font-heading); font-size: 2.1rem; line-height: 1; }
.metric span { font-family: var(--font-code); font-size: .75rem; color: var(--color-muted); }

.section-head { display: grid; grid-template-columns: minmax(0, .9fr) minmax(260px, .55fr); gap: 26px; align-items: end; margin-bottom: 32px; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card-grid.two { grid-template-columns: repeat(2, 1fr); }
.editorial-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 28px; align-items: start; }
.sidebar-note { position: sticky; top: 96px; border: 2px solid var(--color-border); background: var(--color-secondary); color: #fff9ec; padding: 22px; box-shadow: var(--shadow-ink); }
.sidebar-note a { color: var(--color-accent); }
.note-list { display: grid; gap: 12px; margin: 18px 0 0; padding: 0; list-style: none; }
.note-list li { border-top: 1px solid rgba(255,255,255,.22); padding-top: 12px; }

.chapter { border: 2px solid var(--color-border); background: var(--color-surface); padding: clamp(22px, 4vw, 38px); margin-bottom: 22px; position: relative; }
.chapter::before { content: attr(data-label); position: absolute; top: 14px; right: 14px; font-family: var(--font-code); color: var(--color-muted); font-size: .72rem; }
.chapter h2, .chapter h3 { margin-bottom: 14px; }
.chapter p + p, .chapter ul + p, .chapter p + ul { margin-top: 14px; }
ul.clean { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
ul.clean li { display: grid; grid-template-columns: 18px 1fr; gap: 10px; }
ul.clean li::before { content: ''; width: 10px; height: 10px; margin-top: 8px; border-radius: 50%; background: var(--color-accent); border: 1px solid var(--color-border); }

.catalog-hero { display: grid; grid-template-columns: .8fr 1.2fr; gap: 28px; align-items: stretch; }
.filter-board { border: 2px solid var(--color-border); background: var(--color-surface); padding: 20px; display: grid; gap: 12px; }
.filter-chip { display: flex; justify-content: space-between; gap: 16px; padding: 10px 12px; border: 1px solid var(--color-border); font-family: var(--font-code); background: #fffdf6; }
.filter-chip b { color: var(--color-primary-dark); }
.category-rack { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.category-rack .specimen-card:nth-child(2n) { transform: translateY(18px); }

.method-hero { border: 2px solid var(--color-border); background: var(--color-surface); padding: clamp(28px, 5vw, 54px); box-shadow: var(--shadow-ink); position: relative; }
.method-hero::after { content: 'protocol'; position: absolute; right: 20px; bottom: 16px; font-family: var(--font-code); color: rgba(25,26,31,.18); font-size: clamp(2rem, 10vw, 9rem); line-height: 1; pointer-events: none; }
.protocol-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }

.guide-map { display: grid; grid-template-columns: 1fr .7fr; gap: 28px; align-items: start; }
.decision-path { display: grid; gap: 16px; counter-reset: path; }
.decision-node { border: 2px solid var(--color-border); background: var(--color-surface); padding: 18px; position: relative; margin-left: 32px; }
.decision-node::before { counter-increment: path; content: counter(path); position: absolute; left: -32px; top: 18px; width: 44px; height: 44px; border: 2px solid var(--color-border); background: var(--color-accent); display: grid; place-items: center; font-family: var(--font-code); font-weight: 900; border-radius: 50%; }
.decision-node::after { content: ''; position: absolute; left: -11px; bottom: -19px; width: 2px; height: 18px; background: var(--color-border); }
.decision-node:last-child::after { display: none; }

.contact-grid { display: grid; grid-template-columns: 1fr .9fr; gap: 30px; align-items: start; }
.review-form { border: 2px solid var(--color-border); background: var(--color-surface); padding: 24px; box-shadow: var(--shadow-ink); display: grid; gap: 14px; }
.field { display: grid; gap: 6px; }
label { font-weight: 800; }
input, textarea, select { width: 100%; border: 2px solid var(--color-border); background: #fffdf6; color: var(--color-text); padding: 12px 13px; border-radius: var(--radius-sm); font: inherit; }
textarea { min-height: 128px; resize: vertical; }
.form-note { font-size: .9rem; color: var(--color-muted); }
.mail-card { border: 2px solid var(--color-border); background: var(--color-secondary); color: #fff9ec; padding: 24px; display: grid; gap: 16px; }
.mail-card a { color: var(--color-accent); }

.footer { border-top: 2px solid var(--color-border); background: var(--color-secondary); color: #fff9ec; padding: 34px 0; }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: start; }
.footer a { color: #fff9ec; }
.footer-nav { display: flex; gap: 14px; flex-wrap: wrap; }
.footer small { color: rgba(255,249,236,.7); }

@keyframes slow-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }

@media (max-width: 980px) {
  .hero-grid, .section-head, .editorial-grid, .catalog-hero, .guide-map, .contact-grid { grid-template-columns: 1fr; }
  .card-grid, .card-grid.two, .protocol-grid, .category-rack { grid-template-columns: 1fr 1fr; }
  .sidebar-note { position: static; }
  .metrics-strip { grid-template-columns: repeat(2, 1fr); }
  .metric:nth-child(2) { border-right: 0; }
  .metric:nth-child(-n+2) { border-bottom: 1px solid var(--color-border); }
}
@media (max-width: 720px) {
  .header-inner { align-items: flex-start; flex-direction: column; }
  .nav { justify-content: flex-start; }
  .nav a { padding: 7px 8px; font-size: .88rem; }
  .card-grid, .card-grid.two, .protocol-grid, .category-rack { grid-template-columns: 1fr; }
  .category-rack .specimen-card:nth-child(2n) { transform: none; }
  .metrics-strip { grid-template-columns: 1fr; }
  .metric { border-right: 0; border-bottom: 1px solid var(--color-border); }
  .metric:last-child { border-bottom: 0; }
  .compare-slit__row { grid-template-columns: 1fr; }
  .lens-panel { min-height: 260px; box-shadow: 5px 5px 0 var(--color-text); }
  .footer-grid { grid-template-columns: 1fr; }
  .protocol-step { grid-template-columns: 1fr; }
  .protocol-step__num { width: 54px; height: 54px; }
}