@layer reset, base, components, pages, utilities;

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; text-size-adjust: 100%; }
  body, h1, h2, h3, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
  ul, ol { padding: 0; }
  img, svg { display: block; max-width: 100%; }
  button, input, select, textarea { font: inherit; }
  button, a { -webkit-tap-highlight-color: transparent; }
}

@layer base {
  :root {
    --ink: #171918;
    --ink-soft: #2a2d2b;
    --paper: #f4f3ee;
    --paper-strong: #fffefa;
    --steel: #d9ddd8;
    --steel-dark: #aeb5af;
    --muted: #686f6a;
    --accent: #ff5b2e;
    --accent-dark: #d63d16;
    --signal: #d8ff3f;
    --good: #2d7a4c;
    --danger: #bd321e;
    --warning: #9a5d00;
    --line: 1px solid color-mix(in srgb, var(--ink) 22%, transparent);
    --line-strong: 2px solid var(--ink);
    --shadow: 0 24px 70px rgba(23, 25, 24, 0.16);
    --radius-sm: 4px;
    --radius: 10px;
    --radius-lg: 18px;
    --max: 1240px;
    --gutter: clamp(20px, 4vw, 56px);
    --section: clamp(76px, 10vw, 144px);
    --display: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  }

  html { background: var(--paper); color: var(--ink); }
  body {
    min-width: 320px;
    overflow-x: hidden;
    background:
      linear-gradient(90deg, transparent calc(100% - 1px), rgba(23,25,24,.045) 1px) 0 0 / 40px 40px,
      linear-gradient(transparent calc(100% - 1px), rgba(23,25,24,.045) 1px) 0 0 / 40px 40px,
      var(--paper);
    font-family: var(--display);
    font-size: 16px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
  }

  a { color: inherit; text-decoration: none; }
  button, select, input { color: inherit; }
  h1, h2, h3 { font-weight: 800; letter-spacing: -.045em; line-height: .98; text-wrap: balance; }
  h1 { font-size: clamp(3rem, 7.6vw, 7.5rem); }
  h2 { font-size: clamp(2.2rem, 4.4vw, 4.8rem); }
  h3 { font-size: clamp(1.25rem, 2vw, 1.7rem); }
  p { max-width: 72ch; }
  ::selection { background: var(--signal); color: var(--ink); }
  :focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
}

@layer components {
  .sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
  }

  .skip-link {
    position: fixed;
    z-index: 200;
    top: 12px;
    left: 12px;
    transform: translateY(-160%);
    background: var(--signal);
    border: var(--line-strong);
    padding: 12px 18px;
    font-weight: 800;
  }
  .skip-link:focus { transform: translateY(0); }

  .icon { width: 1.15em; height: 1.15em; flex: 0 0 auto; }

  .site-header {
    position: relative;
    z-index: 50;
    border-bottom: var(--line-strong);
    background: color-mix(in srgb, var(--paper) 92%, transparent);
    backdrop-filter: blur(14px);
  }
  .site-header.is-stuck { position: sticky; top: 0; }
  .header-inner {
    min-height: 78px;
    display: grid;
    grid-template-columns: 1fr auto auto;
    align-items: center;
    gap: 32px;
    width: min(calc(100% - 2 * var(--gutter)), var(--max));
    margin: 0 auto;
  }
  .brand { display: inline-flex; align-items: center; gap: 12px; width: max-content; font-size: 1.14rem; font-weight: 900; letter-spacing: -.035em; }
  .brand-mark { width: 36px; height: 36px; color: var(--accent); transition: transform .45s cubic-bezier(.2,.9,.2,1); }
  .brand:hover .brand-mark { transform: rotate(30deg); }
  .desktop-nav { display: flex; align-items: center; gap: clamp(18px, 2.3vw, 34px); }
  .desktop-nav a { font-size: .88rem; font-weight: 700; position: relative; }
  .desktop-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -7px; height: 2px; background: var(--accent); transition: right .25s ease; }
  .desktop-nav a:hover::after { right: 0; }
  .header-action { display: inline-flex; align-items: center; gap: 9px; border-left: var(--line-strong); padding-left: 26px; font-size: .9rem; font-weight: 850; }
  .header-action .icon { transition: transform .2s ease; }
  .header-action:hover .icon { transform: translateX(4px); }
  .menu-button { display: none; width: 44px; height: 44px; place-items: center; border: var(--line-strong); background: transparent; cursor: pointer; }
  .mobile-nav { border-top: var(--line-strong); background: var(--paper-strong); padding: 0 var(--gutter); }
  .mobile-nav a { display: block; padding: 18px 0; border-bottom: var(--line); font-weight: 800; }

  .button {
    min-height: 50px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 13px 20px;
    border: var(--line-strong);
    border-radius: 0;
    font-size: .9rem;
    font-weight: 850;
    letter-spacing: -.01em;
    cursor: pointer;
    transition: transform .16s ease, box-shadow .16s ease, background .16s ease;
  }
  .button:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--ink); }
  .button:active { transform: translate(0); box-shadow: none; }
  .button-accent { background: var(--accent); color: #fff; }
  .button-accent:hover { box-shadow: 5px 5px 0 var(--signal); }
  .button-dark { background: var(--ink); color: #fff; }
  .button-outline { background: transparent; }
  .text-action { display: inline-flex; align-items: center; gap: 9px; font-weight: 800; border: 0; background: transparent; padding: 8px 0; cursor: pointer; border-bottom: 2px solid currentColor; }
  .text-action .icon { transition: transform .2s ease; }
  .text-action:hover .icon { transform: translateX(4px); }

  .section-index {
    display: block;
    margin-bottom: 18px;
    font-family: var(--mono);
    font-size: .72rem;
    font-weight: 800;
    letter-spacing: .12em;
    color: var(--accent-dark);
  }
  .section-heading { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(260px, .55fr); gap: clamp(30px, 6vw, 90px); align-items: end; margin-bottom: 48px; }
  .section-heading > p { color: var(--muted); font-size: 1.08rem; }

  .site-footer { background: var(--ink); color: #fff; margin-top: var(--section); }
  .footer-main {
    width: min(calc(100% - 2 * var(--gutter)), var(--max));
    margin: 0 auto;
    padding: 74px 0;
    display: grid;
    grid-template-columns: minmax(260px, 1.8fr) repeat(3, 1fr);
    gap: clamp(36px, 6vw, 90px);
  }
  .footer-main .brand { margin-bottom: 24px; }
  .footer-main > div:first-child p { color: #b9c0bb; max-width: 38ch; }
  .footer-column { display: flex; flex-direction: column; gap: 12px; }
  .footer-column strong { font-family: var(--mono); font-size: .7rem; letter-spacing: .12em; color: var(--signal); margin-bottom: 7px; }
  .footer-column a { color: #dfe3df; font-size: .9rem; }
  .footer-column a:hover { color: var(--signal); }
  .footer-base { border-top: 1px solid #454a46; width: min(calc(100% - 2 * var(--gutter)), var(--max)); margin: 0 auto; padding: 20px 0 30px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px; color: #a8afa9; font-family: var(--mono); font-size: .68rem; }

  .page-intro {
    width: min(calc(100% - 2 * var(--gutter)), var(--max));
    margin: 0 auto;
    padding: clamp(70px, 10vw, 138px) 0 clamp(54px, 8vw, 100px);
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(220px, .32fr);
    gap: clamp(30px, 7vw, 110px);
    align-items: end;
  }
  .page-intro h1 { max-width: 10ch; font-size: clamp(3rem, 7vw, 6.8rem); }
  .page-intro > div > p { margin-top: 28px; max-width: 65ch; color: var(--muted); font-size: clamp(1.05rem, 1.6vw, 1.3rem); }
  .page-intro aside { border-top: 4px solid var(--accent); padding-top: 18px; }
  .page-intro aside strong { display: block; font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 10px; }
  .page-intro aside p { color: var(--ink-soft); }

  .prose { font-size: 1.05rem; }
  .prose h2 { font-size: clamp(1.65rem, 3vw, 2.6rem); margin: 1.9em 0 .55em; }
  .prose h2:first-child { margin-top: 0; }
  .prose h3 { margin: 1.7em 0 .5em; letter-spacing: -.025em; }
  .prose p + p { margin-top: 1em; }
  .prose ul, .prose ol { margin: 1.1em 0 1.5em; padding-left: 1.4em; }
  .prose li + li { margin-top: .55em; }
  .prose a { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 3px; }

  .content-split {
    width: min(calc(100% - 2 * var(--gutter)), var(--max));
    margin: var(--section) auto 0;
    padding-top: 48px;
    border-top: var(--line-strong);
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(300px, .82fr);
    gap: clamp(50px, 10vw, 150px);
  }
  .content-split h2 { max-width: 11ch; }

  .answer-panel {
    width: min(calc(100% - 2 * var(--gutter)), var(--max));
    margin: 0 auto;
    padding: clamp(34px, 5vw, 64px);
    background: var(--signal);
    border: var(--line-strong);
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 36px;
    box-shadow: 10px 10px 0 var(--ink);
  }
  .answer-panel h2 { font-size: clamp(2rem, 4vw, 4rem); max-width: 13ch; }
  .answer-panel p { margin-top: 18px; max-width: 66ch; }
  .answer-panel .button { flex: 0 0 auto; }

  .safety-note { display: flex; align-items: flex-start; gap: 18px; padding: 22px; background: #fff5dc; border-left: 5px solid var(--warning); }
  .safety-note > .icon { width: 24px; height: 24px; color: var(--warning); }
  .safety-note strong { display: block; margin-bottom: 7px; }
  .safety-note ul { padding-left: 1.1em; }
  .safety-note li + li { margin-top: 7px; }

  .source-list { list-style: none; border-top: var(--line-strong); }
  .source-list li { display: grid; grid-template-columns: 1fr auto; gap: 24px; padding: 24px 0; border-bottom: var(--line); }
  .source-list p { color: var(--muted); margin-top: 5px; }
  .source-list a { display: inline-flex; align-items: center; gap: 8px; font-size: .8rem; font-weight: 800; }
}

@layer pages {
  .hero {
    width: min(calc(100% - 2 * var(--gutter)), var(--max));
    margin: 0 auto;
    min-height: min(760px, calc(100svh - 78px));
    padding: clamp(68px, 8vw, 116px) 0 72px;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(390px, .95fr);
    gap: clamp(34px, 5vw, 88px);
    align-items: center;
  }
  .hero-copy h1 { font-size: clamp(3.5rem, 7.7vw, 7.3rem); max-width: 9.3ch; }
  .hero-copy h1 em { color: var(--accent); font-style: normal; }
  .hero-copy > p { margin-top: 30px; font-size: clamp(1.08rem, 1.7vw, 1.32rem); color: var(--ink-soft); max-width: 56ch; }
  .hero-actions { display: flex; align-items: center; gap: 26px; margin-top: 38px; flex-wrap: wrap; }
  .hero-proof { margin-top: 58px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: var(--line-strong); border-left: var(--line); }
  .hero-proof span { padding: 13px 16px; border-right: var(--line); border-bottom: var(--line); font-family: var(--mono); font-size: .7rem; font-weight: 800; letter-spacing: .05em; }

  .blade-diagram { position: relative; background: var(--ink); color: #fff; border: var(--line-strong); box-shadow: 14px 14px 0 var(--accent); overflow: hidden; }
  .blade-diagram::before { content: "SAWMATCH / CUT GEOMETRY"; position: absolute; top: 20px; left: 22px; color: var(--signal); font-family: var(--mono); font-size: .66rem; letter-spacing: .12em; }
  .blade-diagram::after { content: "NOT TO SCALE"; position: absolute; right: 22px; bottom: 18px; color: #98a099; font-family: var(--mono); font-size: .62rem; letter-spacing: .08em; }
  .blade-diagram svg { width: 100%; aspect-ratio: 720/470; }
  .diagram-grid path { stroke: #303431; stroke-width: 1; }
  .diagram-blade { fill: #242825; stroke: #f6f5ee; stroke-width: 2.2; }
  .diagram-arbor { fill: none; stroke: var(--accent); stroke-width: 3; }
  .diagram-hole { fill: var(--signal); }
  .diagram-tooth { fill: #f6f5ee; }
  .diagram-measure { fill: none; stroke: var(--signal); stroke-width: 3; }
  .diagram-labels path { fill: none; stroke: var(--accent); stroke-width: 1.5; }
  .diagram-labels text { fill: #fff; font-family: var(--mono); font-size: 12px; letter-spacing: .07em; }

  .selector-anchor { scroll-margin-top: 96px; }
  .selector-shell {
    width: min(calc(100% - 2 * var(--gutter)), var(--max));
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(400px, .95fr);
    border: var(--line-strong);
    background: var(--paper-strong);
    box-shadow: var(--shadow);
  }
  .selector-controls { min-width: 0; padding: clamp(28px, 4.5vw, 62px); border-right: var(--line-strong); }
  .selector-intro { margin-bottom: 34px; }
  .selector-intro h2 { font-size: clamp(2rem, 3.5vw, 3.8rem); max-width: 12ch; }
  .selector-intro p { margin-top: 17px; color: var(--muted); max-width: 60ch; }
  .field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
  .field { display: flex; flex-direction: column; min-width: 0; gap: 9px; }
  .field-wide { grid-column: span 2; }
  .field > span:first-child, .fit-panel legend { font-family: var(--mono); font-size: .69rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
  .field > span b { display: inline-grid; place-items: center; width: 23px; height: 23px; margin-right: 8px; background: var(--ink); color: #fff; font-size: .62rem; }
  .field select, .field input, .fit-panel input {
    width: 100%;
    min-height: 52px;
    border: 2px solid #8f9690;
    border-radius: 0;
    background: #fff;
    padding: 11px 13px;
    font-size: .98rem;
    font-weight: 700;
  }
  .field select:focus, .field input:focus, .fit-panel input:focus { border-color: var(--accent); outline: 2px solid var(--accent); outline-offset: 1px; }
  .field small { color: var(--muted); font-family: var(--mono); font-size: .64rem; }
  .material-search { min-height: 42px !important; border-bottom: 0 !important; padding-left: 40px !important; background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%23686f6a' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='6'/%3E%3Cpath d='m16 16 4 4'/%3E%3C/svg%3E") 13px center / 18px no-repeat !important; }
  .field .material-search + select { margin-top: -9px; }
  .input-with-unit { position: relative; display: block; }
  .input-with-unit input { padding-right: 60px; }
  .input-with-unit i { position: absolute; right: 13px; top: 50%; transform: translateY(-50%); font-family: var(--mono); font-size: .68rem; color: var(--muted); font-style: normal; pointer-events: none; }
  .fit-panel { margin: 26px 0 0; padding: 22px; border: 2px dashed #8f9690; background: #f0f1ec; }
  .fit-panel legend { padding: 0 7px; }
  .fit-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
  .fit-panel label { display: flex; flex-direction: column; gap: 7px; font-size: .78rem; font-weight: 750; }
  .choice-row { display: flex; flex-wrap: wrap; gap: 10px; }
  .choice-row label { display: block; }
  .choice-row input {
    position: absolute;
    width: 1px;
    height: 1px;
    min-height: 0;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
    opacity: 0;
  }
  .choice-row span { display: block; padding: 11px 16px; border: 2px solid #8f9690; background: #fff; cursor: pointer; }
  .choice-row input:focus-visible + span { outline: 3px solid var(--accent); outline-offset: 3px; }
  .choice-row input:checked + span { background: var(--ink); color: #fff; border-color: var(--ink); }
  .selector-form-footer { display: flex; justify-content: space-between; gap: 24px; align-items: center; margin-top: 28px; }
  .selector-form-footer > span { display: flex; gap: 8px; color: var(--muted); font-size: .72rem; max-width: 38ch; }
  .selector-result { min-width: 0; background: var(--ink); color: #fff; padding: clamp(28px, 4.2vw, 58px); }
  .result-state { min-height: 100%; display: flex; flex-direction: column; }
  .result-head { display: grid; grid-template-columns: 48px 1fr; gap: 18px; padding-bottom: 28px; border-bottom: 1px solid #4b504c; }
  .result-state-icon { width: 48px; height: 48px; display: grid; place-items: center; background: var(--signal); color: var(--ink); }
  .result-unsupported .result-state-icon { background: #ffc3b6; color: var(--danger); }
  .result-needs-data .result-state-icon { background: #d8ddd8; }
  .result-state-icon .icon { width: 24px; height: 24px; }
  .result-label { font-family: var(--mono); font-size: .65rem; color: var(--signal); letter-spacing: .08em; text-transform: uppercase; }
  .result-unsupported .result-label { color: #ffb7a6; }
  .result-head h2 { margin-top: 8px; font-size: clamp(1.8rem, 3.1vw, 3.4rem); max-width: 14ch; }
  .result-head p { margin-top: 15px; color: #c6cbc7; }
  .result-specs { display: grid; }
  .result-specs > div { display: grid; grid-template-columns: .42fr 1fr; gap: 20px; padding: 18px 0; border-bottom: 1px solid #454a46; }
  .result-specs dt { font-family: var(--mono); font-size: .64rem; color: #98a099; letter-spacing: .07em; text-transform: uppercase; }
  .result-specs dd { font-weight: 760; }
  .result-specs small { display: block; margin-top: 6px; color: #aeb5af; font-weight: 450; font-size: .72rem; }
  .result-list { padding-top: 24px; }
  .result-list h3 { font-size: 1rem; letter-spacing: -.01em; color: var(--signal); }
  .result-list ol, .result-list ul { margin-top: 12px; padding-left: 1.25em; color: #d9ddd9; font-size: .88rem; }
  .result-list li + li { margin-top: 9px; }
  .result-list-negative h3 { color: #ffb7a6; }
  .selector-result .safety-note { margin-top: 24px; background: #2e302d; border-color: var(--signal); color: #e9ece9; font-size: .78rem; }
  .selector-result .safety-note > .icon { color: var(--signal); }
  .result-actions { margin-top: auto; padding-top: 28px; display: flex; align-items: center; flex-wrap: wrap; gap: 22px; }
  .selector-result .button-dark { border-color: #fff; }
  .selector-result .text-action { color: #fff; }
  .copy-feedback { color: var(--signal); font-family: var(--mono); font-size: .68rem; }

  .decision-section, .material-band, .method-strip, .guide-feature, .compatibility-section, .source-section, .related-section, .cut-sequence, .mistake-band {
    width: min(calc(100% - 2 * var(--gutter)), var(--max));
    margin: var(--section) auto 0;
    content-visibility: auto;
    contain-intrinsic-size: auto 700px;
  }
  .decision-section .section-heading h2 { max-width: 12ch; }
  .decision-rail { border-top: var(--line-strong); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .decision-rail article { min-height: 310px; padding: 24px; border-right: var(--line); border-bottom: var(--line-strong); position: relative; }
  .decision-rail article:first-child { border-left: var(--line-strong); }
  .decision-rail article:last-child { border-right: var(--line-strong); }
  .decision-rail article > b { font-family: var(--mono); font-size: .65rem; color: var(--muted); }
  .decision-rail article > .icon { width: 44px; height: 44px; margin: 50px 0 30px; color: var(--accent); }
  .decision-rail h3 { letter-spacing: -.03em; }
  .decision-rail p { color: var(--muted); margin-top: 13px; font-size: .91rem; }

  .material-band { padding: clamp(40px, 6vw, 76px); background: var(--ink); color: #fff; }
  .material-band > div:first-child { display: flex; align-items: end; justify-content: space-between; gap: 30px; }
  .material-band h2 { max-width: 12ch; }
  .material-links { margin: 48px 0 34px; border-top: 1px solid #525752; }
  .material-links a { display: grid; grid-template-columns: 50px .55fr 1fr 30px; gap: 24px; align-items: center; padding: 23px 0; border-bottom: 1px solid #525752; }
  .material-links a > span { font-family: var(--mono); font-size: .68rem; color: var(--signal); }
  .material-links a strong { font-size: 1.18rem; }
  .material-links a p { color: #b6bdb7; font-size: .85rem; }
  .material-links a .icon { transition: transform .2s ease; }
  .material-links a:hover .icon { transform: translateX(5px); }
  .material-band .button { border-color: #fff; }

  .method-strip { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .85fr); gap: clamp(50px, 10vw, 150px); border-top: var(--line-strong); padding-top: 48px; }
  .method-strip h2 { max-width: 11ch; }
  .method-copy > p { font-size: 1.2rem; }
  .method-copy ul { list-style: none; margin: 32px 0; border-top: var(--line); }
  .method-copy li { padding: 15px 0 15px 25px; border-bottom: var(--line); position: relative; }
  .method-copy li::before { content: ""; width: 8px; height: 8px; background: var(--accent); position: absolute; left: 0; top: 23px; }

  .guide-feature { display: grid; grid-template-columns: .4fr 1fr; background: var(--signal); border: var(--line-strong); }
  .guide-feature-number { display: grid; place-items: center; border-right: var(--line-strong); font-size: clamp(6rem, 16vw, 13rem); font-weight: 950; letter-spacing: -.1em; line-height: 1; }
  .guide-feature > div:last-child { padding: clamp(36px, 6vw, 80px); }
  .guide-feature h2 { max-width: 13ch; }
  .guide-feature p { margin: 22px 0 30px; font-size: 1.1rem; }

  .library-list { width: min(calc(100% - 2 * var(--gutter)), var(--max)); margin: 0 auto; }
  .library-group { margin-top: 70px; }
  .library-group:first-child { margin-top: 0; }
  .library-group h2 { font-size: clamp(1.8rem, 3.2vw, 3.4rem); margin-bottom: 22px; }
  .library-group > a { display: grid; grid-template-columns: .35fr 1fr 26px; gap: 28px; align-items: center; padding: 24px 0; border-top: var(--line); }
  .library-group > a:last-child { border-bottom: var(--line-strong); }
  .library-group > a span { font-size: 1.14rem; font-weight: 800; }
  .library-group > a p { color: var(--muted); }
  .library-group > a .icon { transition: transform .2s ease; }
  .library-group > a:hover .icon { transform: translateX(5px); }

  .compatibility-section .section-heading h2 { max-width: 13ch; }
  .compatibility-table { border-top: var(--line-strong); }
  .table-head, .compatibility-table > a { display: grid; grid-template-columns: .36fr .26fr 1fr 28px; gap: 22px; align-items: center; }
  .table-head { padding: 12px 0; font-family: var(--mono); font-size: .65rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
  .compatibility-table > a { padding: 22px 0; border-top: var(--line); }
  .compatibility-table > a:last-child { border-bottom: var(--line-strong); }
  .compatibility-table > a strong { font-size: 1.06rem; }
  .compatibility-table > a span { color: var(--muted); font-size: .88rem; }

  .saw-list { width: min(calc(100% - 2 * var(--gutter)), var(--max)); margin: 0 auto; border-top: var(--line-strong); }
  .saw-list > a { min-height: 220px; display: grid; grid-template-columns: 64px 1fr 36px; gap: 26px; align-items: center; padding: 30px 0; border-bottom: var(--line-strong); }
  .saw-list > a > span { align-self: start; font-family: var(--mono); font-size: .7rem; color: var(--accent-dark); }
  .saw-list > a > div { display: grid; grid-template-columns: 48px .55fr 1fr; gap: 30px; align-items: center; }
  .saw-list > a > div > .icon { width: 45px; height: 45px; color: var(--accent); }
  .saw-list h2 { font-size: clamp(2rem, 3.7vw, 4rem); }
  .saw-list p { color: var(--muted); }
  .saw-list small { grid-column: 3; font-family: var(--mono); color: var(--muted); }
  .saw-list > a > .icon { transition: transform .2s ease; }
  .saw-list > a:hover > .icon { transform: translateX(6px); }

  .spec-stripe { width: min(calc(100% - 2 * var(--gutter)), var(--max)); margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; border: var(--line-strong); background: var(--paper-strong); }
  .spec-stripe > div { padding: 34px; }
  .spec-stripe > div + div { border-left: var(--line-strong); }
  .spec-stripe span { font-family: var(--mono); color: var(--accent-dark); font-size: .69rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
  .spec-stripe ul { margin-top: 18px; padding-left: 1.2em; }
  .spec-stripe li + li { margin-top: 9px; }

  .link-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: var(--line-strong); border-left: var(--line-strong); margin-bottom: 30px; }
  .link-grid a { min-height: 128px; padding: 22px; display: grid; grid-template-columns: 1fr auto; grid-template-rows: 1fr auto; gap: 16px; border-right: var(--line-strong); border-bottom: var(--line-strong); background: color-mix(in srgb, var(--paper-strong) 75%, transparent); }
  .link-grid a strong { font-size: 1.08rem; }
  .link-grid a span { font-family: var(--mono); color: var(--muted); font-size: .65rem; }
  .link-grid a .icon { grid-column: 2; grid-row: 1 / span 2; align-self: center; transition: transform .2s ease; }
  .link-grid a:hover { background: var(--signal); }
  .link-grid a:hover .icon { transform: translateX(4px); }

  .direct-answer { width: min(calc(100% - 2 * var(--gutter)), var(--max)); margin: 0 auto; background: var(--ink); color: #fff; padding: clamp(32px, 6vw, 78px); box-shadow: 12px 12px 0 var(--accent); }
  .direct-answer .result-head h2 { max-width: 20ch; }
  .direct-answer .result-specs { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 40px; }
  .direct-answer .result-list { max-width: 80ch; }
  .direct-answer .safety-note { margin-top: 30px; color: var(--ink); }
  .direct-answer .result-actions { display: none; }

  .cut-sequence { display: grid; grid-template-columns: .55fr 1fr; gap: clamp(50px, 9vw, 130px); }
  .cut-sequence h2 { max-width: 9ch; }
  .cut-sequence ol { list-style: none; border-top: var(--line-strong); }
  .cut-sequence li { display: grid; grid-template-columns: 56px 1fr; gap: 20px; padding: 23px 0; border-bottom: var(--line); }
  .cut-sequence li b { font-family: var(--mono); color: var(--accent-dark); font-size: .7rem; }

  .mistake-band { background: #ffd9d0; border: var(--line-strong); padding: clamp(34px, 6vw, 72px); display: grid; grid-template-columns: .65fr 1fr; gap: clamp(50px, 9vw, 130px); }
  .mistake-band h2 { max-width: 10ch; }
  .mistake-band ul { list-style: none; }
  .mistake-band li { display: grid; grid-template-columns: 28px 1fr; gap: 16px; padding: 18px 0; border-top: 1px solid rgba(23,25,24,.3); }
  .mistake-band li:last-child { border-bottom: 1px solid rgba(23,25,24,.3); }
  .mistake-band .icon { color: var(--danger); }

  .source-section { display: grid; grid-template-columns: .62fr 1fr; gap: clamp(50px, 9vw, 120px); }
  .source-section h2 { max-width: 8ch; }
  .source-section > div > p { color: var(--muted); margin-top: 18px; }

  .related-section > div:first-child { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 34px; }
  .related-section h2 { max-width: 12ch; }
  .related-links { display: grid; grid-template-columns: repeat(2, 1fr); border-top: var(--line-strong); border-left: var(--line-strong); }
  .related-links a { display: grid; grid-template-columns: 1fr auto; gap: 10px 20px; padding: 28px; border-right: var(--line-strong); border-bottom: var(--line-strong); }
  .related-links a span { color: var(--muted); font-size: .86rem; }
  .related-links a .icon { grid-column: 2; grid-row: 1 / span 2; align-self: center; }
  .related-links a:hover { background: var(--signal); }

  .guide-index { width: min(calc(100% - 2 * var(--gutter)), var(--max)); margin: 0 auto; border-top: var(--line-strong); counter-reset: guides; }
  .guide-index a { min-height: 155px; display: grid; grid-template-columns: 65px 1fr 32px; gap: 30px; align-items: center; padding: 26px 0; border-bottom: var(--line-strong); }
  .guide-index a > span { font-family: var(--mono); color: var(--accent-dark); font-size: .7rem; }
  .guide-index h2 { font-size: clamp(1.55rem, 3vw, 3rem); }
  .guide-index p { color: var(--muted); margin-top: 10px; }
  .guide-index a > .icon { transition: transform .2s ease; }
  .guide-index a:hover > .icon { transform: translateX(6px); }

  .guide-article { width: min(calc(100% - 2 * var(--gutter)), 1020px); margin: 0 auto; display: grid; grid-template-columns: 160px 1fr; gap: 70px; }
  .article-marker { position: sticky; top: 110px; align-self: start; padding-top: 15px; border-top: 4px solid var(--accent); display: flex; flex-direction: column; gap: 4px; font-family: var(--mono); font-size: .68rem; }
  .article-marker strong { font-size: .85rem; }
  .article-marker a { margin-top: 10px; text-decoration: underline; }
  .article-body > section { display: grid; grid-template-columns: 50px 1fr; gap: 20px; padding: 36px 0; border-top: var(--line-strong); }
  .article-body > section > span { font-family: var(--mono); color: var(--accent-dark); font-size: .7rem; }
  .article-body > section h2 { font-size: clamp(1.75rem, 3.4vw, 3.3rem); }
  .article-body > section p { grid-column: 2; margin-top: -8px; font-size: 1.1rem; color: var(--ink-soft); }
  .article-body .safety-note { margin-top: 38px; }

  .trust-layout { width: min(calc(100% - 2 * var(--gutter)), 1050px); margin: 0 auto; display: grid; grid-template-columns: 250px 1fr; gap: clamp(50px, 9vw, 120px); }
  .trust-layout nav { display: flex; flex-direction: column; align-self: start; position: sticky; top: 110px; border-top: var(--line-strong); }
  .trust-layout nav a { padding: 12px 0; border-bottom: var(--line); color: var(--muted); font-size: .82rem; font-weight: 700; }
  .trust-layout nav a[aria-current="page"] { color: var(--ink); padding-left: 15px; border-left: 5px solid var(--accent); }

  .not-found { width: min(calc(100% - 2 * var(--gutter)), var(--max)); margin: 0 auto; min-height: 70vh; display: grid; grid-template-columns: .8fr 1fr; align-items: center; gap: 70px; }
  .not-found-code { font-size: clamp(8rem, 23vw, 19rem); font-weight: 950; line-height: .75; letter-spacing: -.13em; color: var(--accent); }
  .not-found h1 { font-size: clamp(2.5rem, 5vw, 5rem); max-width: 10ch; }
  .not-found p { margin: 24px 0 30px; color: var(--muted); font-size: 1.1rem; }
  .not-found .text-action { margin-left: 24px; }
}

@layer utilities {
  [hidden] { display: none !important; }

  @media (max-width: 1040px) {
    .desktop-nav { display: none; }
    .menu-button { display: grid; }
    .header-action { border-left: 0; }
    .selector-shell { grid-template-columns: 1fr; }
    .selector-controls { border-right: 0; border-bottom: var(--line-strong); }
    .selector-result { min-height: 520px; }
    .hero { grid-template-columns: 1fr .8fr; }
    .hero-proof { margin-top: 40px; }
    .decision-rail { grid-template-columns: repeat(2, 1fr); }
    .decision-rail article:nth-child(2) { border-right: var(--line-strong); }
    .footer-main { grid-template-columns: 1.5fr repeat(3, 1fr); gap: 34px; }
    .source-section { grid-template-columns: 1fr; }
  }

  @media (max-width: 820px) {
    :root { --section: 84px; }
    .header-inner { min-height: 70px; grid-template-columns: 1fr auto; }
    .header-action { display: none; }
    .hero { min-height: 0; grid-template-columns: 1fr; padding-top: 64px; }
    .hero-copy h1 { max-width: 10ch; }
    .blade-diagram { max-width: 620px; }
    .section-heading, .content-split, .method-strip, .source-section, .cut-sequence, .mistake-band { grid-template-columns: 1fr; }
    .page-intro { grid-template-columns: 1fr; }
    .page-intro h1 { max-width: 12ch; }
    .page-intro aside { max-width: 520px; }
    .decision-rail article { min-height: 260px; }
    .material-links a { grid-template-columns: 40px .5fr 1fr 24px; gap: 15px; }
    .guide-feature { grid-template-columns: 1fr; }
    .guide-feature-number { border-right: 0; border-bottom: var(--line-strong); min-height: 230px; }
    .footer-main { grid-template-columns: 1.5fr 1fr 1fr; }
    .footer-main > div:first-child { grid-column: 1 / -1; }
    .library-group > a { grid-template-columns: .45fr 1fr 24px; }
    .saw-list > a > div { grid-template-columns: 44px 1fr; }
    .saw-list p, .saw-list small { grid-column: 2; }
    .direct-answer .result-specs { grid-template-columns: 1fr; }
    .trust-layout { grid-template-columns: 1fr; }
    .trust-layout nav { position: static; display: grid; grid-template-columns: repeat(2, 1fr); }
    .guide-article { grid-template-columns: 1fr; gap: 35px; }
    .article-marker { position: static; flex-direction: row; flex-wrap: wrap; gap: 10px 18px; }
  }

  @media (max-width: 620px) {
    :root { --gutter: 18px; }
    body { background-size: 30px 30px; }
    h1 { font-size: clamp(3rem, 15vw, 4.7rem); }
    .brand-mark { width: 32px; height: 32px; }
    .hero { padding-top: 54px; gap: 45px; }
    .hero-copy > p { font-size: 1.03rem; }
    .hero-actions { align-items: stretch; flex-direction: column; }
    .hero-actions .button, .hero-actions .text-action { width: 100%; }
    .hero-proof { grid-template-columns: 1fr; }
    .blade-diagram { box-shadow: 8px 8px 0 var(--accent); }
    .selector-shell { width: 100%; border-left: 0; border-right: 0; }
    .selector-controls, .selector-result { padding: 28px 18px; }
    .field-grid, .fit-grid { grid-template-columns: 1fr; }
    .field-wide { grid-column: auto; }
    .selector-form-footer { align-items: stretch; flex-direction: column; }
    .selector-form-footer .button { width: 100%; }
    .result-head { grid-template-columns: 40px 1fr; gap: 13px; }
    .result-state-icon { width: 40px; height: 40px; }
    .result-head h2 { font-size: 1.75rem; }
    .result-specs > div { grid-template-columns: 1fr; gap: 5px; }
    .result-actions { align-items: stretch; flex-direction: column; }
    .result-actions .button, .result-actions .text-action { width: 100%; }
    .section-heading { gap: 22px; margin-bottom: 32px; }
    .decision-rail { grid-template-columns: 1fr; }
    .decision-rail article, .decision-rail article:nth-child(2) { border-left: var(--line-strong); border-right: var(--line-strong); min-height: 245px; }
    .decision-rail article > .icon { margin: 34px 0 24px; }
    .material-band { width: 100%; padding: 45px 18px; }
    .material-links a { grid-template-columns: 32px 1fr 22px; }
    .material-links a p { display: none; }
    .answer-panel { width: calc(100% - 36px); align-items: stretch; flex-direction: column; padding: 28px; box-shadow: 7px 7px 0 var(--ink); }
    .answer-panel .button { width: 100%; }
    .library-group > a { grid-template-columns: 1fr 24px; gap: 15px; }
    .library-group > a span { grid-column: 1; }
    .library-group > a p { grid-column: 1; }
    .library-group > a .icon { grid-column: 2; grid-row: 1 / span 2; }
    .table-head { display: none; }
    .compatibility-table > a { grid-template-columns: 1fr 24px; gap: 8px 14px; }
    .compatibility-table > a strong, .compatibility-table > a span { grid-column: 1; }
    .compatibility-table > a .icon { grid-column: 2; grid-row: 1 / span 3; }
    .saw-list > a { grid-template-columns: 38px 1fr 24px; gap: 14px; }
    .saw-list > a > div { grid-template-columns: 1fr; gap: 14px; }
    .saw-list > a > div > .icon { width: 35px; height: 35px; }
    .saw-list p, .saw-list small { grid-column: 1; }
    .spec-stripe { grid-template-columns: 1fr; }
    .spec-stripe > div + div { border-left: 0; border-top: var(--line-strong); }
    .link-grid { grid-template-columns: 1fr; }
    .direct-answer { width: 100%; padding: 35px 18px; box-shadow: none; }
    .related-links { grid-template-columns: 1fr; }
    .guide-index a { grid-template-columns: 42px 1fr 24px; gap: 14px; }
    .article-body > section { grid-template-columns: 34px 1fr; gap: 12px; }
    .article-body > section p { grid-column: 1 / -1; margin-top: 4px; }
    .trust-layout nav { grid-template-columns: 1fr; }
    .source-list li { grid-template-columns: 1fr; }
    .not-found { grid-template-columns: 1fr; min-height: 75vh; gap: 40px; padding: 50px 0; }
    .not-found-code { font-size: 8rem; }
    .not-found .text-action { margin: 20px 0 0; display: flex; width: max-content; }
    .footer-main { grid-template-columns: 1fr 1fr; }
    .footer-main > div:first-child { grid-column: 1 / -1; }
    .footer-base { flex-direction: column; }
  }

  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  }

  @media print {
    .site-header, .site-footer, .result-actions, .hero-actions, .selector-controls { display: none !important; }
    body { background: #fff; }
    .selector-shell { display: block; border: 0; box-shadow: none; }
    .selector-result, .direct-answer { background: #fff; color: #000; padding: 0; box-shadow: none; }
    .result-head p, .result-specs small, .result-list ol, .result-list ul { color: #333; }
    a { text-decoration: none; }
  }
}