:root {
      --ink: #151515;
      --paper: #f4f3ef;
      --muted: #686863;
      --line: rgba(21,21,21,.14);
      --line-dark: rgba(255,255,255,.16);
      --accent: #c8ff46;
      --blue: #315ee7;
      --max: 1120px;
      --radius: 18px;
      --body: -apple-system, BlinkMacSystemFont,
              "Segoe UI", Helvetica, Arial, sans-serif;
      --display: "Helvetica Neue",
                 "Arial Nova", Arial, sans-serif;
      --mono: ui-monospace, SFMono-Regular,
              Menlo, Monaco, Consolas, monospace;
    }

    * { box-sizing: border-box; }

    html { scroll-behavior: smooth; }

    h1, h2, h3 {
      overflow-wrap: anywhere;
      hyphens: auto;
    }

    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: var(--body);
      font-size: 16px;
      line-height: 1.5;
      text-rendering: optimizeLegibility;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    :focus-visible {
      outline: 3px solid var(--blue);
      outline-offset: 3px;
    }

    .shell {
      width: min(calc(100% - 32px), var(--max));
      margin-inline: auto;
    }

    .mono { font-family: var(--mono); }

    .skip-link {
      position: fixed;
      top: -80px;
      left: 16px;
      z-index: 100;
      padding: 10px 14px;
      border-radius: 999px;
      background: #fff;
      color: #000;
    }

    .skip-link:focus { top: 14px; }

    .nav {
      position: absolute;
      inset: 0 0 auto;
      z-index: 20;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      min-height: 72px;
      color: #080808;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      min-height: 40px;
    }

    .brand-logo {
      display: block;
      width: clamp(205px, 19vw, 286px);
      height: auto;
    }

    .nav-links {
      display: flex;
      gap: 5px;
    }

    .nav-links a,
    .pill {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 34px;
      padding: 0 13px;
      border: 1px solid rgba(0,0,0,.14);
      border-radius: 999px;
      background: rgba(255,255,255,.7);
      font-size: .78rem;
      transition:
        background .18s ease,
        transform .18s ease;
    }

    .nav-links a:hover,
    .pill:hover {
      background: #fff;
      transform: translateY(-1px);
    }

    .pill-dark {
      background: #0b0b0b;
      color: #fff;
      border-color: transparent;
    }

    .hero {
      min-height: 620px;
      display: flex;
      align-items: end;
      padding: 138px 0 72px;
      background:
        radial-gradient(
          circle at 86% 18%,
          rgba(200,255,70,.38),
          transparent 28%
        ),
        linear-gradient(
          180deg,
          #f4f3ef 0%,
          #ecebe5 100%
        );
      border-bottom: 1px solid var(--line);
    }

    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      gap: 7px;
      margin-bottom: 28px;
      color: var(--muted);
      font: 600 .69rem/1.4 var(--mono);
    }

    .breadcrumb a {
      text-decoration: underline;
      text-underline-offset: 3px;
    }

    .hero-label,
    .eyebrow {
      font: 500 .69rem/1.4 var(--mono);
      text-transform: uppercase;
      letter-spacing: .11em;
    }

    h1 {
      max-width: 920px;
      margin: 0;
      font-family: var(--display);
      font-size: clamp(3.2rem, 8.2vw, 7.1rem);
      line-height: .88;
      letter-spacing: -.065em;
      font-weight: 500;
    }

    .lead {
      max-width: 740px;
      margin: 26px 0 0;
      color: #3f3f3b;
      font-size: clamp(1rem, 1.7vw, 1.22rem);
      line-height: 1.58;
    }

    .hero-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 26px;
    }

    .section {
      padding: 66px 0;
    }

    .section-head {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 24px;
      align-items: start;
      margin-bottom: 24px;
    }

    .section-head h2 {
      margin: 8px 0 0;
      font-family: var(--display);
      font-size: clamp(2.2rem, 4.8vw, 4.6rem);
      line-height: .94;
      letter-spacing: -.055em;
      font-weight: 500;
    }

    .section-copy {
      margin: 0;
      max-width: 650px;
      color: var(--muted);
      font-size: .95rem;
      line-height: 1.65;
    }

    .detail-grid {
      display: grid;
      grid-template-columns:
        repeat(2, minmax(0, 1fr));
      gap: 12px;
    }

    .decision-nav {
      display: flex;
      flex-wrap: wrap;
      gap: 12px 24px;
      margin: 24px 0;
      font-size: .9rem;
    }

    .decision-nav a,
    .decision-note a,
    .card p a {
      text-decoration: underline;
      text-underline-offset: .2em;
    }

    .decision-table-wrap {
      overflow-x: auto;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: #fff;
    }

    .decision-table {
      width: 100%;
      min-width: 640px;
      border-collapse: collapse;
      font-size: .95rem;
      line-height: 1.6;
    }

    .decision-table caption {
      padding: 20px;
      text-align: left;
      font-weight: 700;
    }

    .decision-table th,
    .decision-table td {
      padding: 16px;
      border-top: 1px solid var(--line);
      text-align: left;
      vertical-align: top;
      hyphens: auto;
    }

    .decision-table thead {
      background: #f3f3ef;
    }

    .decision-note {
      margin-top: 24px;
      line-height: 1.6;
    }

    .card {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: #fff;
      padding: clamp(20px, 3vw, 30px);
    }

    .card h3 {
      margin: 0 0 10px;
      font-family: var(--display);
      font-size: clamp(1.5rem, 2.7vw, 2.1rem);
      line-height: 1;
      letter-spacing: -.04em;
      font-weight: 500;
    }

    .card p {
      margin: 0;
      color: var(--muted);
      font-size: .91rem;
      line-height: 1.6;
    }

    .dark {
      background: #0b0b0b;
      color: #fff;
    }

    .dark .section-copy { color: #aaa; }

    .rows {
      border-top: 1px solid var(--line-dark);
    }

    .row {
      display: grid;
      grid-template-columns: 42px 1fr 1.2fr;
      gap: 20px;
      align-items: start;
      padding: 22px 0;
      border-bottom:
        1px solid var(--line-dark);
    }

    .row > span {
      color: #80807a;
      font-size: .72rem;
    }

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

    .row h3 {
      margin: 0;
      font-family: var(--display);
      font-size: clamp(1.4rem, 2.8vw, 2.1rem);
      line-height: 1.05;
      letter-spacing: -.035em;
      font-weight: 500;
    }

    .row p {
      margin: 0;
      max-width: 540px;
      color: #aaa;
      font-size: .9rem;
      line-height: 1.55;
    }

    .steps {
      display: grid;
      grid-template-columns:
        repeat(3, minmax(0, 1fr));
      gap: 12px;
    }

    .step-no {
      display: block;
      margin-bottom: 32px;
      color: var(--muted);
      font: 600 .68rem/1 var(--mono);
    }

    .tech-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .tech-list span {
      padding: 8px 11px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: #fff;
      font: 650 .72rem/1 var(--mono);
    }

    .related {
      display: grid;
      grid-template-columns:
        repeat(2, minmax(0, 1fr));
      gap: 12px;
      margin-top: 20px;
    }

    .related a { display: block; }

    .related-link {
      display: inline-block;
      margin-top: 16px;
      font-size: .76rem;
      font-weight: 700;
      text-decoration: underline;
      text-underline-offset: 3px;
    }

    .cta {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 22px;
      align-items: end;
      margin-top: 28px;
      padding: clamp(24px, 4vw, 42px);
      border-radius: var(--radius);
      background: #0b0b0b;
      color: #fff;
    }

    .cta h2 {
      margin: 0;
      font-family: var(--display);
      font-size: clamp(2.2rem, 5vw, 4.4rem);
      line-height: .93;
      letter-spacing: -.055em;
      font-weight: 500;
    }

    .cta p {
      margin: 0 0 18px;
      color: #aaa;
      line-height: 1.6;
    }

    .cta .pill {
      background: #fff;
      color: #000;
      border-color: transparent;
    }

    .footer {
      padding: 18px 0 24px;
      border-top: 1px solid var(--line);
      color: var(--muted);
      font-size: .71rem;
    }

    .footer-inner {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
    }

    .footer-links {
      display: flex;
      gap: 14px;
    }

    @media (max-width: 900px) {
      .section-head,
      .detail-grid,
      .steps,
      .related,
      .cta {
        grid-template-columns: 1fr;
      }

      .row {
        grid-template-columns: 34px 1fr;
      }

      .row p {
        grid-column: 2;
      }
    }

    @media (max-width: 620px) {
      .shell {
        width: min(
          calc(100% - 20px),
          var(--max)
        );
      }

      .nav-links {
        display: none;
      }

      .hero {
        min-height: 520px;
        padding: 118px 0 48px;
      }

      h1 {
        font-size: clamp(3rem, 15vw, 5rem);
      }

      .section {
        padding: 50px 0;
      }

      .row {
        gap: 10px;
      }
    }

    @media (max-width: 420px) {
      .nav > .pill {
        display: none;
      }
    }