/* ============ Tokens — colors ============ */
  :root {
    /* Ground — warm near-black. Never pure #000. */
    --ink: #0E0D0C;
    --ink-raised: #141312;
    --ink-deep: #080807;

    /* Light ground — used for print, docs and inverted sections */
    --paper: #F4F3F1;
    --paper-raised: #EAE8E4;

    /* The two permitted line colors */
    --line: #2A2724;
    --line-paper: #D8D5D0;

    /* Text ramp on ink. --meta is the contrast floor; never go below it. */
    --text: #F2EFEA;
    --text-soft: #A8A29A;
    --meta: #7A756D;

    /* Text ramp on paper */
    --text-on-paper: #14130F;
    --text-on-paper-soft: #55514B;
    --meta-on-paper: #8E8A82;

    /* The single accent. One family, three values. */
    --signal: #2E6BFF;
    --signal-bright: #5C8DFF;
    --signal-deep: #1B4FD8;

    /* Semantic aliases — prefer these in components */
    --bg: var(--ink);
    --bg-raised: var(--ink-raised);
    --border: var(--line);
    --fg: var(--text);
    --fg-soft: var(--text-soft);
    --fg-meta: var(--meta);
    --accent: var(--signal);
    --accent-hover: var(--signal-bright);
    --on-accent: #FFFFFF;
  }

  /* Paper scope — put .trivr-paper on any section that inverts to a light ground */
  .trivr-paper {
    --bg: var(--paper);
    --bg-raised: var(--paper-raised);
    --border: var(--line-paper);
    --fg: var(--text-on-paper);
    --fg-soft: var(--text-on-paper-soft);
    --fg-meta: var(--meta-on-paper);
    --accent: var(--signal-deep);
    --accent-hover: var(--signal);
  }

  /* ============ Tokens — typography ============ */
  :root {
    --font-display: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
    --font-body: 'IBM Plex Sans', 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

    --weight-display: 700;
    --weight-medium: 500;
    --weight-body: 400;

    --size-display: clamp(40px, 5.2vw, 64px);
    --size-h1: 40px;
    --size-h2: 28px;
    --size-h3: 20px;
    --size-body: 17px;
    --size-small: 15px;
    --size-meta: 13px;
    --size-label: 12px;

    --leading-display: 1.05;
    --leading-heading: 1.2;
    --leading-body: 1.6;

    --track-display: -0.03em;
    --track-heading: -0.02em;
    --track-wordmark: 0.02em;
    --track-mono: 0.08em;
  }

  /* ============ Tokens — spacing ============ */
  :root {
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-7: 40px;
    --space-8: 56px;
    --space-9: 72px;
    --space-10: 96px;
    --space-11: 128px;
    --space-12: 176px;

    /* Square everywhere. */
    --radius: 0px;

    /* Hairlines — Trivr permits rules, unlike a no-line system. Always 1px. */
    --rule: 1px;
    --stroke-mark: 3;

    --measure: 68ch;
    --page-max: 1280px;
    --gutter: 32px;
  }

  /* ============ Tokens — motion ============ */
  :root {
    --dur-fast: 140ms;
    --dur: 220ms;
    --dur-slow: 420ms;
    --ease: cubic-bezier(0.2, 0, 0, 1);
  }

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

  /* ============ Base ============ */
  *, *::before, *::after { box-sizing: border-box; }
  html, body { margin: 0; }
  /* overflow-x lives on html, not body: body also has height:100% below, and pairing
     that with an explicit overflow-x on the same element forces the UA to compute
     overflow-y as auto too, turning body into its own scroll container and breaking
     window.scrollY-driven behavior (anchor smooth-scroll, the hero reveal). */
  html { scroll-behavior: smooth; overflow-x: hidden; }
  body {
    height: 100%;
    background: var(--ink);
    color: var(--text);
    font-family: var(--font-body);
    font-size: var(--size-body);
    line-height: var(--leading-body);
    -webkit-font-smoothing: antialiased;
  }
  h1, h2, h3, p, ul, li, figure, form { margin: 0; padding: 0; list-style: none; }
  a { color: inherit; }
  input, textarea, button { font: inherit; color: inherit; }

  .wrap { max-width: var(--page-max); margin: 0 auto; padding: 0 clamp(20px, 5vw, 32px); }
  .label {
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: var(--size-label);
    letter-spacing: var(--track-mono);
    text-transform: uppercase;
    color: var(--fg-meta);
    white-space: nowrap;
  }
  .label::before { content: "["; }
  .label::after { content: "]"; }

  /* ============ Buttons & links ============ */
  .btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-weight: var(--weight-medium);
    letter-spacing: -0.005em;
    line-height: 1.2;
    white-space: nowrap;
    flex: none;
    border-radius: var(--radius);
    border: var(--rule) solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: background-color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
  }
  .btn-sm { padding: 8px 16px; font-size: 14px; }
  .btn-md { padding: 12px 24px; font-size: 15px; }
  .btn-lg { padding: 16px 32px; font-size: 17px; }
  .btn-primary { background: var(--accent); color: var(--on-accent); }
  .btn-primary:hover { background: var(--accent-hover); }
  .btn-secondary { background: transparent; color: var(--fg); border-color: var(--border); }
  .btn-secondary:hover { border-color: var(--fg); }

  .textlink {
    display: inline-flex;
    align-items: baseline;
    gap: 8px;
    font-family: var(--font-body);
    font-size: var(--size-small);
    color: var(--fg);
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-thickness: 1px;
    text-decoration-color: var(--border);
    transition: color var(--dur-fast) var(--ease), text-decoration-color var(--dur-fast) var(--ease);
  }
  .textlink:hover { color: var(--accent-hover); text-decoration-color: var(--accent-hover); }
  .textlink--quiet { color: var(--fg-meta); }

  /* ============ Header ============ */
  .site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    padding: 18px var(--gutter);
    border-bottom: var(--rule) solid var(--border);
    background: var(--bg);
  }
  .brand { display: inline-flex; align-items: center; gap: 6px; text-decoration: none; }
  .brand svg { display: block; flex: 0 0 auto; }
  .brand-word {
    font-family: var(--font-display);
    font-weight: var(--weight-display);
    font-size: 25px;
    letter-spacing: var(--track-wordmark);
    line-height: 1;
    color: var(--text);
  }
  .site-nav { display: flex; gap: 28px; align-items: center; }
  .site-nav a.navlink {
    font-family: var(--font-body);
    font-size: var(--size-small);
    text-decoration: none;
    color: var(--fg-soft);
    padding-bottom: 2px;
    border-bottom: var(--rule) solid transparent;
    transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
  }
  .site-nav a.navlink:hover,
  .site-nav a.navlink.is-active { color: var(--fg); }
  .site-nav a.navlink.is-active { border-bottom-color: var(--accent); }
  @media (max-width: 720px) {
    .site-nav .navlink { display: none; }
  }

  /* ============ Hero ============ */
  .hero {
    padding: clamp(64px, 12vw, 140px) 0 clamp(72px, 13vw, 152px);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr));
    gap: clamp(48px, 6vw, 88px);
    align-items: center;
  }
  .hero-tags { display: flex; flex-wrap: wrap; gap: 8px 20px; }
  .hero h1 {
    margin: 24px 0 0;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(33px, 4.6vw, 58px);
    line-height: 1.06;
    letter-spacing: var(--track-display);
    max-width: 15ch;
    text-wrap: balance;
    color: var(--text);
  }
  .hero h1 span { color: var(--signal); }
  .hero p {
    margin: 32px 0 0;
    max-width: 56ch;
    font-size: var(--size-body);
    line-height: var(--leading-body);
    color: var(--text-soft);
    text-wrap: pretty;
  }
  .hero-actions { display: flex; flex-wrap: wrap; gap: 20px 24px; margin-top: 40px; align-items: center; }
  .hero-figure-slot { justify-self: center; }

  .figure-frame { margin: 0; display: flex; flex-direction: column; gap: 12px; }
  .figure-frame-inner { position: relative; padding: 56px; display: flex; align-items: center; justify-content: center; }
  .figure-frame-inner--compact { padding: 24px; }
  .corner { position: absolute; width: 18px; height: 18px; border-color: var(--border); border-style: solid; }
  .corner-tl { top: 0; left: 0; border-width: var(--rule) 0 0 var(--rule); }
  .corner-tr { top: 0; right: 0; border-width: var(--rule) var(--rule) 0 0; }
  .corner-bl { bottom: 0; left: 0; border-width: 0 0 var(--rule) var(--rule); }
  .corner-br { bottom: 0; right: 0; border-width: 0 var(--rule) var(--rule) 0; }
  #trivr-assembly { display: block; height: clamp(230px, 30vw, 330px); width: auto; }
  #trivr-assembly .lift-part { transition: transform var(--dur-slow) var(--ease); }
  #trivr-assembly .lift-part path { transition: stroke var(--dur-slow) var(--ease); }
  @media (prefers-reduced-motion: reduce) {
    #trivr-assembly .lift-part { transition: none; transform: none !important; }
    #trivr-assembly .lift-part--flash path { stroke: var(--text) !important; }
  }

  /* ============ Transition strip ============ */
  .statement-strip { border-top: var(--rule) solid var(--line); border-bottom: var(--rule) solid var(--line); }
  .statement-strip .wrap {
    padding: clamp(48px, 7vw, 80px) clamp(20px, 5vw, 32px);
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: clamp(112px, 20vw, 224px);
  }
  @media (max-width: 720px) {
    .statement-strip .wrap { grid-template-columns: 1fr; gap: 32px; }
  }
  #trivr-volume { display: block; width: clamp(138px, 17.2vw, 206px); height: auto; }
  .statement-strip p {
    max-width: 24ch;
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(29px, 4.2vw, 44px);
    line-height: 1.28;
    letter-spacing: var(--track-heading);
    color: var(--text-soft);
    text-wrap: pretty;
  }
  .statement-strip strong { color: var(--text); font-weight: 700; }

  /* ============ Services ============ */
  .services { padding: clamp(72px, 11vw, 128px) 0 clamp(64px, 10vw, 112px); }
  .services-grid {
    margin-top: clamp(40px, 6vw, 64px);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(330px, 100%), 1fr));
    gap: clamp(56px, 7vw, 96px);
  }
  .service { display: flex; flex-direction: column; }
  .service-kicker {
    font-family: var(--font-mono);
    font-size: var(--size-label);
    letter-spacing: var(--track-mono);
    text-transform: uppercase;
    color: var(--fg-meta);
    display: block;
  }
  .service-name {
    margin-top: 10px;
    font-family: var(--font-display);
    font-weight: var(--weight-medium);
    font-size: var(--size-h2);
    letter-spacing: var(--track-heading);
    color: var(--fg);
    display: block;
  }
  .service-desc {
    margin-top: 10px;
    font-family: var(--font-body);
    font-size: var(--size-body);
    line-height: var(--leading-body);
    color: var(--fg-soft);
    max-width: 46ch;
    text-wrap: pretty;
    display: block;
  }
  .service-list { margin-top: auto; padding-top: 36px; }
  .service-list li {
    padding: 14px 0;
    border-top: var(--rule) solid var(--line);
    font-size: var(--size-small);
    line-height: 1.5;
    color: var(--text-soft);
  }

  /* ============ Experience ============ */
  .experience { padding: clamp(64px, 10vw, 112px) 0; border-top: var(--rule) solid var(--line); }
  .experience-intro {
    margin-top: clamp(40px, 6vw, 64px);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr));
    gap: clamp(48px, 6vw, 88px);
    align-items: start;
  }
  .experience h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(28px, 4.2vw, 44px);
    line-height: 1.12;
    letter-spacing: var(--track-display);
    max-width: 18ch;
    text-wrap: balance;
    color: var(--text);
  }
  .experience-intro p {
    margin-top: 32px;
    max-width: 58ch;
    font-size: var(--size-body);
    line-height: var(--leading-body);
    color: var(--text-soft);
    text-wrap: pretty;
  }
  .experience-intro p + p { margin-top: 24px; }
  .experience-figure-slot { justify-self: center; }
  #trivr-axis { display: block; height: clamp(160px, 20vw, 220px); width: auto; }
  .stats {
    margin-top: clamp(56px, 8vw, 96px);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
    gap: 32px 48px;
  }
  .stat { border-top: var(--rule) solid var(--line); padding-top: 20px; }
  .stat-value {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(40px, 5.4vw, 60px);
    line-height: 1;
    letter-spacing: var(--track-display);
  }
  .stat-value--sm { font-size: clamp(30px, 4.2vw, 48px); line-height: 1.05; }
  .stat-caption {
    margin-top: 14px;
    font-family: var(--font-mono);
    font-size: var(--size-label);
    letter-spacing: var(--track-mono);
    text-transform: uppercase;
    color: var(--meta);
  }
  .bring { margin-top: clamp(56px, 8vw, 96px); }
  .bring-grid {
    margin-top: 28px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-rows: repeat(3, auto);
    grid-auto-flow: column;
    gap: 0 clamp(32px, 5vw, 72px);
  }
  .bring-grid li {
    padding: 18px 0;
    border-top: var(--rule) solid var(--line);
    font-size: var(--size-small);
    line-height: 1.55;
    color: var(--text-soft);
    text-wrap: pretty;
  }
  .bring-grid strong { font-family: var(--font-display); font-weight: 500; color: var(--text); }
  @media (max-width: 720px) {
    .bring-grid { grid-template-columns: 1fr; grid-template-rows: none; grid-auto-flow: row; }
  }

  /* ============ Approach ============ */
  .approach { padding: clamp(64px, 10vw, 112px) 0 clamp(72px, 11vw, 128px); border-top: var(--rule) solid var(--line); }
  .approach h2 {
    margin-top: 20px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(28px, 4.2vw, 44px);
    line-height: 1.12;
    letter-spacing: var(--track-display);
    color: var(--text);
  }
  .steps {
    margin-top: clamp(40px, 6vw, 64px);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr));
    gap: clamp(32px, 4vw, 48px);
  }
  .step { display: flex; flex-direction: column; gap: 12px; padding-top: 16px; border-top: var(--rule) solid var(--border); }
  .step-index { font-family: var(--font-mono); font-size: var(--size-label); letter-spacing: var(--track-mono); color: var(--fg-meta); }
  .step-index em { font-style: normal; color: var(--signal); }
  .step h3 { font-family: var(--font-display); font-weight: var(--weight-medium); font-size: var(--size-h3); letter-spacing: var(--track-heading); color: var(--fg); }
  .step p { font-family: var(--font-body); font-size: var(--size-small); line-height: var(--leading-body); color: var(--fg-soft); max-width: 52ch; text-wrap: pretty; }

  /* ============ Why Trivr band ============ */
  .why-band { background: var(--ink-raised); border-top: var(--rule) solid var(--line); border-bottom: var(--rule) solid var(--line); }
  .why-band .wrap { padding: clamp(64px, 9vw, 104px) clamp(20px, 5vw, 32px); }
  .why-grid {
    margin-top: clamp(40px, 5vw, 56px);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
    gap: clamp(40px, 5vw, 72px);
  }
  .why-grid h3 { font-family: var(--font-display); font-weight: 500; font-size: var(--size-h3); letter-spacing: var(--track-heading); color: var(--text); }
  .why-grid p { margin-top: 14px; font-size: var(--size-small); line-height: 1.6; color: var(--text-soft); max-width: 40ch; text-wrap: pretty; }

  /* ============ CTA band ============ */
  .cta-band {
    background: var(--signal);
    --fg: #FFFFFF;
    --fg-soft: rgba(255,255,255,0.86);
    --fg-meta: rgba(255,255,255,0.78);
    --border: rgba(255,255,255,0.42);
    --accent: #FFFFFF;
    --accent-hover: rgba(255,255,255,0.86);
    --on-accent: #1B4FD8;
  }
  .cta-band .wrap {
    padding: clamp(64px, 9vw, 104px) clamp(20px, 5vw, 32px);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr));
    gap: clamp(32px, 5vw, 72px);
    align-items: center;
  }
  .cta-band h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(28px, 4.2vw, 44px);
    line-height: 1.12;
    letter-spacing: var(--track-display);
    color: #fff;
    max-width: 16ch;
    text-wrap: balance;
  }
  .cta-band p { margin-top: 24px; max-width: 52ch; font-size: var(--size-body); line-height: var(--leading-body); color: rgba(255,255,255,0.86); text-wrap: pretty; }
  .cta-band-action { justify-self: start; }

  /* ============ Contact ============ */
  .contact { padding: clamp(72px, 11vw, 128px) 0; }
  .contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr)); gap: clamp(48px, 6vw, 88px); align-items: start; }
  .contact h2 { margin-top: 20px; font-family: var(--font-display); font-weight: 700; font-size: clamp(28px, 4.2vw, 44px); line-height: 1.12; letter-spacing: var(--track-display); color: var(--text); }
  .contact-intro p { margin-top: 24px; max-width: 40ch; font-size: var(--size-body); line-height: var(--leading-body); color: var(--text-soft); text-wrap: pretty; }

  form { display: flex; flex-direction: column; gap: 24px; }
  .field-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(180px, 100%), 1fr)); gap: 24px; }
  .field { display: flex; flex-direction: column; gap: 8px; }
  .field span {
    font-family: var(--font-mono);
    font-size: var(--size-label);
    letter-spacing: var(--track-mono);
    color: var(--fg-meta);
  }
  .field span::before { content: "["; }
  .field span::after { content: "]"; }
  .field input, .field textarea {
    width: 100%;
    padding: 12px 14px;
    background: transparent;
    color: var(--fg);
    font-family: var(--font-body);
    font-size: var(--size-body);
    line-height: var(--leading-body);
    border: var(--rule) solid var(--border);
    border-radius: var(--radius);
    outline: none;
    transition: border-color var(--dur-fast) var(--ease);
  }
  .field textarea { resize: vertical; }
  .field input:focus, .field textarea:focus { border-color: var(--fg); }
  .honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
  .form-footer { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px; }
  .form-note { font-family: var(--font-mono); font-size: var(--size-label); letter-spacing: var(--track-mono); color: var(--meta); }
  .form-note::before { content: "["; }
  .form-note::after { content: "]"; }
  .form-status { font-family: var(--font-body); font-size: var(--size-small); color: var(--text-soft); }
  .form-status[data-state="ok"] { color: var(--signal-bright); }

  /* ============ Footer ============ */
  .site-footer { border-top: var(--rule) solid var(--line); background: var(--ink); padding: clamp(56px, 8vw, 72px) clamp(20px, 5vw, 32px) 40px; }
  .footer-inner { max-width: var(--page-max); margin: 0 auto; display: flex; flex-direction: column; gap: clamp(40px, 6vw, 56px); }
  .footer-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px 48px; }
  .footer-brand { display: inline-flex; align-items: flex-start; gap: 6px; }
  .footer-brand-text { display: flex; flex-direction: column; gap: 4px; margin-top: 8px; }
  .footer-tagline { font-family: var(--font-mono); font-size: var(--size-label); letter-spacing: var(--track-mono); color: var(--fg-meta); }
  .footer-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 28px; }
  .footer-legal {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px 24px;
    font-family: var(--font-mono);
    font-size: var(--size-label);
    letter-spacing: var(--track-mono);
    color: var(--meta);
  }