*, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 92px; }
    body {
      margin: 0;
      overflow-x: hidden;
      background: var(--bg);
      color: var(--fg);
      font-family: var(--font-body);
      -webkit-font-smoothing: antialiased;
    }
    body::before {
      position: fixed;
      z-index: -3;
      inset: 0;
      pointer-events: none;
      content: "";
      background:
        radial-gradient(60rem 40rem at 88% -5%, oklch(0.696 0.17 162.48 / .16), transparent 66%),
        radial-gradient(44rem 32rem at -8% 58%, oklch(0.696 0.17 162.48 / .07), transparent 70%),
        var(--bg);
    }
    ::selection { background: var(--accent); color: var(--bg); }
    img { display: block; max-width: 100%; }
    a { color: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    button { font: inherit; }
    :focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
    [hidden] { display: none !important; }

    .skip-link {
      position: fixed;
      z-index: 1000;
      top: 12px;
      left: 12px;
      padding: 11px 15px;
      border-radius: 10px;
      background: var(--fg);
      color: var(--bg);
      font-weight: 700;
      transform: translateY(-160%);
      transition: transform .2s ease;
    }
    .skip-link:focus { transform: translateY(0); }
    .container { width: min(var(--max), calc(100% - (var(--gutter) * 2))); margin-inline: auto; }
    .section { position: relative; padding: clamp(5.5rem, 10vw, 9.5rem) 0; }
    .section-rule { border-top: 1px solid var(--border); }
    .label {
      display: inline-flex;
      align-items: center;
      gap: .7rem;
      margin: 0 0 1.4rem;
      color: var(--accent);
      font: 650 .72rem/1.3 var(--font-mono);
      letter-spacing: .12em;
      text-transform: uppercase;
    }
    .label::before { width: 1.8rem; height: 1px; background: currentColor; content: ""; }
    .display {
      margin: 0;
      font-size: clamp(2.55rem, 6.2vw, 6rem);
      font-weight: 500;
      letter-spacing: -.067em;
      line-height: .94;
      text-wrap: balance;
    }
    .section-title {
      max-width: 16ch;
      margin: 0;
      font-size: clamp(2.35rem, 4.9vw, 4.8rem);
      font-weight: 500;
      letter-spacing: -.06em;
      line-height: .98;
      text-wrap: balance;
    }
    .lede { margin: 0; color: var(--body); font-size: clamp(1.02rem, 1.35vw, 1.2rem); line-height: 1.72; }
    .section-intro {
      display: grid;
      grid-template-columns: minmax(0, 1.45fr) minmax(280px, .55fr);
      align-items: end;
      gap: clamp(2rem, 8vw, 7rem);
      margin-bottom: clamp(3rem, 6vw, 5.5rem);
    }
    .section-intro .lede { max-width: 34rem; }

    .site-header {
      position: fixed;
      z-index: 100;
      inset: 0 0 auto;
      border-bottom: 1px solid transparent;
      transition: background .25s ease, border-color .25s ease, backdrop-filter .25s ease;
    }
    .site-header.scrolled, .site-header.open {
      border-color: var(--border);
      background: oklch(0.1149 0 0 / .88);
      backdrop-filter: blur(18px);
    }
    .nav { min-height: 78px; display: flex; align-items: center; gap: 2rem; }
    .brand {
      flex: 0 0 auto;
      text-decoration: none;
      font-size: 1.42rem;
      font-weight: 700;
      letter-spacing: -.05em;
    }
    .brand em { color: var(--accent); font-style: normal; }
    .nav-links { display: flex; align-items: center; gap: 1.6rem; margin: 0 0 0 auto; padding: 0; list-style: none; }
    .nav-links a {
      position: relative;
      color: var(--muted);
      font-size: .78rem;
      font-weight: 600;
      text-decoration: none;
      transition: color .2s ease;
    }
    .nav-links a::after {
      position: absolute;
      right: 0;
      bottom: -.55rem;
      left: 0;
      height: 1px;
      background: var(--accent);
      content: "";
      transform: scaleX(0);
      transform-origin: left;
      transition: transform .2s ease;
    }
    .nav-links a:hover, .nav-links a.active { color: var(--fg); }
    .nav-links a.active::after { transform: scaleX(1); }
    .mobile-nav-cta { display: none; }
    .nav-cta {
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0 1.15rem;
      border: 1px solid oklch(0.696 0.17 162.48 / .5);
      border-radius: 999px;
      font-size: .78rem;
      font-weight: 700;
      text-decoration: none;
      transition: background .2s ease, border-color .2s ease, transform .2s ease;
    }
    .nav-cta:hover { border-color: var(--accent); background: oklch(0.696 0.17 162.48 / .12); transform: translateY(-2px); }
    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      margin-left: auto;
      padding: 0;
      border: 1px solid var(--border);
      border-radius: 50%;
      background: var(--surface);
      color: var(--fg);
      cursor: pointer;
    }
    .nav-toggle span, .nav-toggle::before, .nav-toggle::after {
      display: block;
      width: 17px;
      height: 1px;
      margin: 4px auto;
      background: currentColor;
      content: "";
      transition: transform .2s ease, opacity .2s ease;
    }
    .nav-toggle[aria-expanded="true"] span { opacity: 0; }
    .nav-toggle[aria-expanded="true"]::before { transform: translateY(5px) rotate(45deg); }
    .nav-toggle[aria-expanded="true"]::after { transform: translateY(-5px) rotate(-45deg); }

    .hero { min-height: 100svh; display: grid; align-items: center; padding: 9.5rem 0 5rem; }
    .hero::after {
      position: absolute;
      z-index: -1;
      inset: 0;
      opacity: .2;
      pointer-events: none;
      content: "";
      background-image:
        linear-gradient(oklch(0.696 0.17 162.48 / .14) 1px, transparent 1px),
        linear-gradient(90deg, oklch(0.696 0.17 162.48 / .14) 1px, transparent 1px);
      background-size: 84px 84px;
      mask-image: linear-gradient(to bottom, black, transparent 86%);
    }
    .hero-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(340px, .75fr); align-items: center; gap: clamp(3rem, 9vw, 8rem); }
    .hero .display { max-width: 10.6ch; }
    .hero .display span { color: var(--accent); }
    .hero-copy > .lede { max-width: 44rem; margin: 2rem 0 2.1rem; }
    .actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.4rem; }
    .button-primary {
      min-height: 52px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: .7rem;
      padding: 0 1.45rem;
      border: 1px solid var(--accent);
      border-radius: 999px;
      background: var(--accent);
      color: var(--bg);
      font-size: .86rem;
      font-weight: 700;
      text-decoration: none;
      box-shadow: 0 12px 36px oklch(0.696 0.17 162.48 / .18);
      transition: background .2s ease, border-color .2s ease, transform .2s ease;
    }
    .button-primary:hover { border-color: var(--accent-hover); background: var(--accent-hover); transform: translateY(-2px); }
    .text-action {
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      gap: .75rem;
      color: var(--fg);
      font-size: .86rem;
      font-weight: 650;
      text-underline-offset: .35rem;
      text-decoration-color: var(--border);
      transition: text-decoration-color .2s ease;
    }
    .text-action:hover { text-decoration-color: var(--accent); }
    .hero-note { max-width: 40rem; margin: 1.35rem 0 0; color: var(--muted); font-size: .78rem; line-height: 1.6; }

    .signal-map {
      position: relative;
      min-height: 480px;
      display: grid;
      align-content: center;
      padding: clamp(1.4rem, 3vw, 2.5rem);
      border: 1px solid oklch(0.696 0.17 162.48 / .34);
      border-radius: 32px;
      background:
        radial-gradient(circle at 78% 12%, oklch(0.696 0.17 162.48 / .17), transparent 36%),
        var(--surface);
      box-shadow: 0 35px 100px oklch(0 0 0 / .48);
      overflow: hidden;
    }
    .signal-map::before {
      position: absolute;
      inset: 0;
      opacity: .25;
      content: "";
      background-image: radial-gradient(var(--border) 1px, transparent 1px);
      background-size: 22px 22px;
      mask-image: linear-gradient(90deg, transparent, black 40%);
    }
    .signal-head { position: relative; display: flex; align-items: center; justify-content: space-between; margin-bottom: 2rem; }
    .signal-head span { color: var(--muted); font: 600 .67rem/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; }
    .signal-status { display: inline-flex !important; align-items: center; gap: .5rem; color: var(--success) !important; }
    .signal-status::before { width: 6px; height: 6px; border-radius: 50%; background: currentColor; box-shadow: 0 0 14px currentColor; content: ""; }
    .signal-flow { position: relative; display: grid; gap: .75rem; }
    .signal-flow::before { position: absolute; top: 1.8rem; bottom: 1.8rem; left: 1rem; width: 1px; background: linear-gradient(var(--accent), var(--border)); content: ""; }
    .signal-row {
      position: relative;
      display: grid;
      grid-template-columns: 2rem 1fr auto;
      align-items: center;
      gap: .95rem;
      min-height: 65px;
      padding: .7rem .85rem;
      border-bottom: 1px solid var(--border);
    }
    .signal-row:last-child { border-bottom: 0; }
    .signal-index { z-index: 1; display: grid; width: 2rem; height: 2rem; place-items: center; border: 1px solid var(--border); border-radius: 50%; background: var(--surface); color: var(--accent); font: 600 .64rem/1 var(--font-mono); }
    .signal-row strong { display: block; margin-bottom: .22rem; font-size: .88rem; }
    .signal-row small { color: var(--muted); font-size: .72rem; }
    .signal-row > em { color: var(--body); font: normal 600 .62rem/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; }
    .signal-caption { position: relative; margin: 2rem 0 0; padding-top: 1.2rem; border-top: 1px solid var(--border); color: var(--body); font-size: .78rem; line-height: 1.6; }

    .proof { border-block: 1px solid var(--border); background: oklch(0.1553 0.0042 162.48 / .55); }
    .proof-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
    .proof-item { min-height: 170px; padding: 2.2rem 1.8rem; border-right: 1px solid var(--border); }
    .proof-item:first-child { padding-left: 0; }
    .proof-item:last-child { border-right: 0; }
    .proof-item strong { display: block; margin-bottom: .8rem; font-size: clamp(1.75rem, 3.2vw, 2.7rem); font-weight: 500; letter-spacing: -.05em; }
    .proof-item p { margin: 0; color: var(--muted); font-size: .78rem; line-height: 1.55; }
    .proof-source { grid-column: 1 / -1; margin: 0; padding: .95rem 0; border-top: 1px solid var(--border); color: var(--muted); font: .62rem/1.5 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; }

    .problem-layout { display: grid; grid-template-columns: minmax(260px, .72fr) minmax(0, 1.28fr); gap: clamp(3rem, 9vw, 8rem); }
    .problem-sticky { position: sticky; top: 120px; align-self: start; }
    .problem-sticky .section-title { max-width: 10ch; }
    .problem-sticky .lede { max-width: 25rem; margin-top: 2rem; }
    .problem-list { border-top: 1px solid var(--border); }
    .problem-item {
      display: grid;
      grid-template-columns: 3rem minmax(0, .86fr) minmax(220px, 1.14fr);
      gap: 1.5rem;
      padding: 2rem 0;
      border-bottom: 1px solid var(--border);
      transition: border-color .2s ease, padding-left .2s ease;
    }
    .problem-item:hover { padding-left: .75rem; border-color: oklch(0.696 0.17 162.48 / .45); }
    .problem-item > span { color: var(--accent); font: 600 .7rem/1.6 var(--font-mono); }
    .problem-item h3 { margin: 0; font-size: 1.1rem; line-height: 1.35; }
    .problem-item p { margin: 0; color: var(--muted); font-size: .88rem; line-height: 1.65; }

    .deliveries { background: oklch(0.1553 0.0042 162.48 / .55); }
    .delivery-grid { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
    .delivery {
      position: relative;
      min-height: 480px;
      padding: clamp(1.7rem, 3.3vw, 3rem);
      border-right: 1px solid var(--border);
      background: var(--surface);
      transition: background .25s ease;
    }
    .delivery:last-child { border-right: 0; }
    .delivery:hover { background: var(--surface-strong); }
    .delivery-index { display: flex; align-items: center; justify-content: space-between; margin-bottom: 4.5rem; color: var(--accent); font: 600 .68rem/1 var(--font-mono); letter-spacing: .1em; }
    .delivery-index::after { width: 2.5rem; height: 1px; background: var(--border); content: ""; }
    .delivery h3 { margin: 0 0 1rem; font-size: clamp(1.7rem, 3vw, 2.5rem); font-weight: 500; letter-spacing: -.045em; }
    .delivery p { min-height: 7.6rem; margin: 0; color: var(--body); font-size: .91rem; line-height: 1.7; }
    .delivery ul { display: grid; gap: .72rem; margin: 2rem 0 0; padding: 1.6rem 0 0; border-top: 1px solid var(--border); list-style: none; }
    .delivery li { position: relative; padding-left: 1rem; color: var(--muted); font-size: .78rem; line-height: 1.5; }
    .delivery li::before { position: absolute; top: .58em; left: 0; width: 4px; height: 4px; border-radius: 50%; background: var(--accent); content: ""; }

    .method-shell { display: grid; grid-template-columns: minmax(250px, .6fr) minmax(0, 1.4fr); gap: clamp(3rem, 8vw, 7rem); }
    .method-nav { display: grid; align-content: start; gap: .4rem; }
    .method-tab {
      min-height: 64px;
      display: grid;
      grid-template-columns: 2.3rem 1fr;
      align-items: center;
      gap: .8rem;
      padding: .8rem 1rem;
      border: 1px solid transparent;
      border-radius: 14px;
      background: transparent;
      color: var(--muted);
      text-align: left;
      cursor: pointer;
      transition: color .2s ease, border-color .2s ease, background .2s ease;
    }
    .method-tab:hover { color: var(--fg); border-color: var(--border); }
    .method-tab[aria-selected="true"] { border-color: oklch(0.696 0.17 162.48 / .36); background: oklch(0.696 0.17 162.48 / .09); color: var(--fg); }
    .method-tab span { color: var(--accent); font: 600 .65rem/1 var(--font-mono); }
    .method-tab strong { font-size: .93rem; }
    .method-panel {
      min-height: 340px;
      padding: clamp(2rem, 5vw, 4.5rem);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background:
        radial-gradient(circle at 88% 8%, oklch(0.696 0.17 162.48 / .15), transparent 34%),
        var(--surface);
    }
    .method-panel .panel-kicker { color: var(--accent); font: 600 .68rem/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; }
    .method-panel h3 { max-width: 15ch; margin: 1.2rem 0 1.3rem; font-size: clamp(2rem, 4.5vw, 4rem); font-weight: 500; letter-spacing: -.055em; line-height: 1; }
    .method-panel > p { max-width: 39rem; margin: 0; color: var(--body); font-size: 1rem; line-height: 1.75; }
    .method-output { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 2.2rem; }
    .method-output span { padding: .55rem .75rem; border: 1px solid var(--border); border-radius: 999px; color: var(--muted); font: 600 .65rem/1 var(--font-mono); }

    .cases { background: oklch(0.1553 0.0042 162.48 / .55); }
    .case-ledger { border-top: 1px solid var(--border); }
    .case-row { display: grid; grid-template-columns: 8.2rem minmax(0, 1fr) minmax(280px, .72fr); gap: 2rem; padding: clamp(2rem, 4vw, 3.6rem) 0; border-bottom: 1px solid var(--border); }
    .case-meta { color: var(--accent); font: 600 .67rem/1.55 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; }
    .case-copy h3 { max-width: 24ch; margin: 0 0 1rem; font-size: clamp(1.55rem, 3vw, 2.6rem); font-weight: 500; letter-spacing: -.045em; line-height: 1.08; }
    .case-copy p, .case-result p { margin: 0; color: var(--muted); font-size: .88rem; line-height: 1.7; }
    .case-result { align-self: end; padding-left: 1.5rem; border-left: 1px solid oklch(0.696 0.17 162.48 / .5); }
    .case-result strong { display: block; margin-bottom: .65rem; color: var(--success); font-size: .92rem; line-height: 1.5; }

    .project-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
    .project {
      position: relative;
      min-height: 360px;
      display: flex;
      flex-direction: column;
      padding: clamp(1.8rem, 4vw, 3.3rem);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: var(--surface);
      text-decoration: none;
      overflow: hidden;
      transition: border-color .25s ease, transform .25s ease, background .25s ease;
    }
    .project::before { position: absolute; top: -5rem; right: -5rem; width: 13rem; height: 13rem; border: 1px solid oklch(0.696 0.17 162.48 / .22); border-radius: 50%; content: ""; transition: transform .45s ease; }
    .project:hover { border-color: oklch(0.696 0.17 162.48 / .58); background: var(--surface-strong); transform: translateY(-4px); }
    .project:hover::before { transform: scale(1.22); }
    .project-top { display: flex; align-items: center; justify-content: space-between; color: var(--accent); font: 600 .68rem/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; }
    .project-arrow { font-size: 1.4rem; transition: transform .25s ease; }
    .project:hover .project-arrow { transform: translate(3px, -3px); }
    .project h3 { max-width: 11ch; margin: auto 0 1rem; font-size: clamp(2rem, 4vw, 3.8rem); font-weight: 500; letter-spacing: -.06em; line-height: .98; }
    .project p { max-width: 30rem; margin: 0 0 1.8rem; color: var(--body); font-size: .9rem; line-height: 1.65; }
    .project-host { color: var(--muted); font: .67rem/1 var(--font-mono); }

    .about-grid { display: grid; grid-template-columns: minmax(300px, .8fr) minmax(0, 1.2fr); align-items: center; gap: clamp(3rem, 10vw, 9rem); }
    .portrait { position: relative; max-width: 480px; margin: 0; }
    .portrait::after { position: absolute; z-index: -1; right: -1.1rem; bottom: -1.1rem; width: 68%; height: 68%; border: 1px solid oklch(0.696 0.17 162.48 / .42); border-radius: var(--radius); content: ""; }
    .portrait img { width: 100%; aspect-ratio: 3 / 4; border-radius: var(--radius); object-fit: cover; filter: saturate(.78) contrast(1.05); }
    .portrait-note { position: absolute; right: 1rem; bottom: 1rem; left: 1rem; padding: .95rem 1rem; border: 1px solid oklch(1 0 0 / .14); border-radius: 14px; background: oklch(0.1149 0 0 / .82); box-shadow: 0 12px 30px oklch(0 0 0 / .38); backdrop-filter: blur(14px); }
    .portrait-note strong { display: block; font-size: .82rem; }
    .portrait-note span { color: var(--muted); font: .63rem/1.5 var(--font-mono); }
    .about-copy .section-title { max-width: 13ch; }
    .about-copy .lede { max-width: 42rem; margin: 2rem 0 0; }
    .about-quote { max-width: 40rem; margin: 2rem 0 0; padding: 1.3rem 0 1.3rem 1.4rem; border-left: 1px solid var(--accent); color: var(--fg); font-size: clamp(1.05rem, 1.8vw, 1.3rem); line-height: 1.55; }
    .about-links { display: flex; flex-wrap: wrap; gap: 1.25rem; margin-top: 2rem; }

    .final-cta { padding-top: 2rem; }
    .cta-panel {
      position: relative;
      padding: clamp(2.5rem, 8vw, 7rem);
      border: 1px solid oklch(0.696 0.17 162.48 / .42);
      border-radius: 32px;
      background:
        radial-gradient(42rem 30rem at 100% 0%, oklch(0.696 0.17 162.48 / .2), transparent 65%),
        var(--surface);
      overflow: hidden;
    }
    .cta-panel h2 { max-width: 16ch; margin: 0 0 1.5rem; font-size: clamp(2.6rem, 6vw, 5.8rem); font-weight: 500; letter-spacing: -.067em; line-height: .95; text-wrap: balance; }
    .cta-panel > p { max-width: 43rem; margin: 0 0 2rem; color: var(--body); font-size: 1rem; line-height: 1.75; }

    footer { padding: 3rem 0; border-top: 1px solid var(--border); }
    .footer-main { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 2rem; }
    .footer-copy { max-width: 31rem; margin: 1rem 0 0; color: var(--muted); font-size: .78rem; line-height: 1.6; }
    .footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 1.3rem; }
    .footer-links a { min-height: 44px; display: inline-flex; align-items: center; color: var(--muted); font-size: .74rem; text-decoration: none; transition: color .2s ease; }
    .footer-links a:hover { color: var(--fg); }
    .footer-bottom { display: flex; justify-content: space-between; gap: 1.5rem; margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--border); color: var(--muted); font: .62rem/1.5 var(--font-mono); }

    .reveal { opacity: 1; transform: none; }
    .reveal.visible { opacity: 1; transform: none; }

    @media (max-width: 1040px) {
      .nav-links { gap: 1rem; }
      .nav-links a { font-size: .72rem; }
      .hero-grid { grid-template-columns: 1fr 360px; gap: 3rem; }
      .case-row { grid-template-columns: 6.5rem minmax(0, 1fr); }
      .case-result { grid-column: 2; }
    }
    @media (max-width: 900px) {
      .nav-toggle { display: block; }
      .nav > .nav-cta { display: none; }
      .nav-links {
        position: absolute;
        top: 77px;
        right: 0;
        left: 0;
        display: none;
        align-items: stretch;
        gap: 0;
        margin: 0;
        padding: 1rem var(--gutter) 1.5rem;
        border-bottom: 1px solid var(--border);
        background: oklch(0.1149 0 0 / .98);
      }
      .site-header.open .nav-links { display: grid; }
      .nav-links a { min-height: 48px; display: flex; align-items: center; font-size: .9rem; }
      .nav-links a::after { display: none; }
      .mobile-nav-cta { display: block; margin-top: .6rem; }
      .mobile-nav-cta a { justify-content: center; border: 1px solid oklch(0.696 0.17 162.48 / .5); border-radius: 999px; color: var(--fg); }
      .mobile-nav-cta a:hover { border-color: var(--accent); background: oklch(0.696 0.17 162.48 / .12); }
      .hero { min-height: 0; padding-top: 8.5rem; }
      .hero-grid, .section-intro, .problem-layout, .method-shell, .about-grid { grid-template-columns: 1fr; }
      .signal-map { min-height: 0; max-width: 650px; }
      .proof-grid { grid-template-columns: repeat(2, 1fr); }
      .proof-item:nth-child(2) { border-right: 0; }
      .proof-item:nth-child(-n+2) { border-bottom: 1px solid var(--border); }
      .proof-item:nth-child(3) { padding-left: 0; }
      .problem-sticky { position: static; }
      .problem-sticky .section-title { max-width: 14ch; }
      .delivery-grid { grid-template-columns: 1fr; }
      .delivery { min-height: 0; border-right: 0; border-bottom: 1px solid var(--border); }
      .delivery:last-child { border-bottom: 0; }
      .delivery-index { margin-bottom: 2.5rem; }
      .delivery p { min-height: 0; }
      .method-nav { grid-template-columns: repeat(4, minmax(0, 1fr)); }
      .method-tab { grid-template-columns: 1fr; gap: .4rem; }
      .portrait { max-width: 420px; }
    }
    @media (max-width: 650px) {
      :root { --gutter: 1rem; --radius: 20px; }
      .section { padding: 5.2rem 0; }
      .display { font-size: clamp(2.75rem, 14.4vw, 4.5rem); }
      .section-title { font-size: clamp(2.35rem, 11vw, 3.8rem); }
      .actions { display: grid; align-items: stretch; }
      .button-primary, .text-action { width: 100%; }
      .signal-map { min-height: 430px; padding: 1.25rem; border-radius: 24px; }
      .signal-row { grid-template-columns: 2rem 1fr; }
      .signal-row > em { display: none; }
      .proof-grid { grid-template-columns: 1fr; }
      .proof-item, .proof-item:first-child, .proof-item:nth-child(3) { min-height: 0; padding: 1.6rem 0; border-right: 0; border-bottom: 1px solid var(--border); }
      .proof-item:nth-child(4) { border-bottom: 0; }
      .problem-item { grid-template-columns: 2.2rem 1fr; gap: 1rem; }
      .problem-item p { grid-column: 2; }
      .problem-item:hover { padding-left: 0; }
      .method-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .method-panel { min-height: 0; padding: 1.6rem; }
      .case-row { grid-template-columns: 1fr; gap: 1rem; }
      .case-result { grid-column: auto; padding: 1.2rem 0 0; border-top: 1px solid oklch(0.696 0.17 162.48 / .5); border-left: 0; }
      .project-grid { grid-template-columns: 1fr; }
      .project { min-height: 330px; }
      .portrait { width: calc(100% - 1rem); }
      .cta-panel { border-radius: 24px; }
      .footer-main { grid-template-columns: 1fr; }
      .footer-links { justify-content: flex-start; }
      .footer-bottom { display: grid; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }
    .tools-section { padding-block: 3rem; }
    .tools-strip { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1.5rem 2rem; padding-block: 1.5rem; border-block: 1px solid var(--border); }
    .tools-strip h2 { margin: .5rem 0 0; font-size: 1.35rem; font-weight: 500; }
    .tools-strip .label { margin: 0; }
    .tools-strip .text-action { width: auto; }
    @media (max-width: 650px) { .tools-strip { align-items: flex-start; flex-direction: column; } }