html,
      body { width: 100%; min-height: 100%; }
      html { scroll-behavior: smooth; }
      * { box-sizing: border-box; }
      body { margin: 0; background: #000; color: #fff; font-family: "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
      section { min-height: 100svh; padding: 32px; }
      .hero { display: grid; place-items: center; text-align: center; position: relative; padding-bottom: 128px; }
      h1 { margin: 0; max-width: 100%; overflow-wrap: anywhere; font-size: clamp(2rem, 7vw, 6rem); font-weight: 700; line-height: 1; letter-spacing: 0; }
      .title-link { color: #fff; text-decoration: none; }
      .title-link:hover,
      .title-link:focus-visible { color: #999; outline: none; }
      .sites { display: grid; align-content: start; justify-items: center; gap: clamp(56px, 10svh, 96px); padding-top: clamp(180px, 34svh, 360px); padding-bottom: clamp(180px, 34svh, 360px); }
      ul { width: min(100%, 720px); margin: 0; padding: 0; list-style: none; }
      .sites > ul { --toggle-column: 48px; --tree-gap: 16px; --project-indent: clamp(48px, 7vw, 96px); --file-indent: clamp(72px, 10vw, 144px); }
      li + li { border-top: 0; }
      a { color: #fff; text-decoration: none; }
      ul a,
      .tree-toggle,
      .coming-soon { display: block; width: 100%; padding: 24px 0; border: 0; background: none; color: #fff; cursor: pointer; font: inherit; font-size: clamp(1.25rem, 4vw, 3.5rem); line-height: 1; text-align: left; }
      .coming-soon { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; color: #777; cursor: default; }
      .coming-soon small { font-size: 0.32em; font-weight: 400; letter-spacing: 0.08em; text-transform: uppercase; }
      ul a:hover,
      ul a:focus-visible,
      .tree-toggle:hover,
      .tree-toggle:focus-visible { color: #999; outline: none; }
      .tree-toggle { display: grid; grid-template-columns: minmax(0, 1fr) var(--toggle-column); align-items: center; gap: var(--tree-gap); }
      .tree-toggle::after { content: "+"; display: grid; place-items: center; width: var(--toggle-column); color: #777; font-size: 0.55em; }
      .tree-toggle[aria-expanded="true"]::after { content: "-"; }
      .tree-reveal { display: grid; grid-template-rows: 0fr; opacity: 0; overflow: hidden; transform: translate3d(0, -10px, 0); transition: grid-template-rows 360ms cubic-bezier(0.16, 1, 0.3, 1), opacity 220ms ease-out, transform 360ms cubic-bezier(0.16, 1, 0.3, 1); }
      .tree-reveal.is-animating { will-change: grid-template-rows, opacity, transform; }
      .tree-reveal > ul { min-height: 0; overflow: hidden; }
      .tree-reveal.is-open { grid-template-rows: 1fr; opacity: 1; overflow: visible; transform: translate3d(0, 0, 0); }
      .tree-reveal.is-open > ul { overflow: visible; }
      .project-links,
      .file-links { width: 100%; }
      .project-links { margin: -4px 0 0; padding: 0; }
      .file-links { margin: 0; padding: 0; }
      .project-links li + li,
      .file-links li + li { border-top: 0; }
      .project-links a,
      .project-links .tree-toggle { padding: 22px 0; color: #bbb; font-size: clamp(1.05rem, 2.4vw, 1.85rem); line-height: 1.15; }
      .project-entry { display: grid; grid-template-columns: minmax(0, 1fr) var(--toggle-column); align-items: center; gap: var(--tree-gap); }
      .project-entry a { min-width: 0; padding-right: 0; }
      .project-entry .tree-toggle { display: grid; grid-template-columns: var(--toggle-column); place-items: center; width: var(--toggle-column); min-height: var(--toggle-column); padding: 0; color: #777; font-size: clamp(1.05rem, 2.4vw, 1.85rem); text-align: center; }
      .project-entry .tree-toggle::after { width: var(--toggle-column); font-size: 1em; }
      .file-links a { display: grid; grid-template-columns: minmax(0, 1fr) var(--toggle-column); align-items: center; gap: var(--tree-gap); min-height: 64px; padding: 18px 0; color: #a8a8a8; font-size: clamp(0.95rem, 2vw, 1.25rem); line-height: 1.35; }
      .file-links span { display: grid; place-items: center; width: var(--toggle-column); color: #888; font-size: 1em; letter-spacing: 0; white-space: nowrap; }
      .about-link a { color: #d6d6d6; }
      .tree-reveal li { opacity: 0; transform: translate3d(0, -6px, 0); transition: opacity 160ms ease-out, transform 200ms cubic-bezier(0.16, 1, 0.3, 1); }
      .tree-reveal.is-animating > ul > li { will-change: opacity, transform; }
      .tree-reveal.is-open > ul > li { opacity: 1; transform: translate3d(0, 0, 0); }
      .tree-reveal.is-open > ul > li:nth-child(1) { transition-delay: 35ms; }
      .tree-reveal.is-open > ul > li:nth-child(2) { transition-delay: 65ms; }
      .tree-reveal.is-open > ul > li:nth-child(3) { transition-delay: 95ms; }
      .tree-reveal.is-open > ul > li:nth-child(4) { transition-delay: 125ms; }
      .tree-reveal.is-open > ul > li:nth-child(5) { transition-delay: 155ms; }
      .scroll-arrow { position: absolute; left: 50%; top: 90%; width: 28px; height: 28px; padding: 0; border: 0; border-right: 2px solid #fff; border-bottom: 2px solid #fff; background: none; color: inherit; cursor: pointer; transform: translate3d(-50%, 0, 0) rotate(45deg); animation: arrow-bounce 1.6s ease-in-out infinite; will-change: transform; }
      .scroll-arrow:hover,
      .scroll-arrow:focus-visible { border-color: #999; outline: none; }
      .scroll-arrow:focus-visible { box-shadow: 7px 7px 0 -5px #999; }
      @keyframes arrow-bounce {
        0%, 100% { transform: translate3d(-50%, 0, 0) rotate(45deg); }
        50% { transform: translate3d(-50%, 10px, 0) rotate(45deg); }
      }
      @media (max-height: 520px) {
        .hero { align-content: center; padding-bottom: 88px; }
        .scroll-arrow { top: 90%; width: 14px; height: 14px; }
      }
      @media (max-width: 560px) {
        section { padding: 20px; }
        .sites { gap: 44px; padding-top: clamp(140px, 30svh, 260px); padding-bottom: clamp(140px, 30svh, 260px); }
        .sites > ul { --toggle-column: 32px; --tree-gap: 8px; --project-indent: 22px; --file-indent: 44px; }
        .project-links a,
        .project-links .tree-toggle { padding: 20px 0; }
        .tree-toggle { grid-template-columns: minmax(0, 1fr) var(--toggle-column); }
        .tree-toggle::after { width: var(--toggle-column); }
        .project-entry { grid-template-columns: minmax(0, 1fr) var(--toggle-column); gap: var(--tree-gap); }
        .project-entry .tree-toggle { grid-template-columns: var(--toggle-column); width: var(--toggle-column); min-height: var(--toggle-column); padding: 0; }
        .project-entry .tree-toggle::after { width: var(--toggle-column); }
        .file-links a { grid-template-columns: minmax(0, 1fr) var(--toggle-column); gap: var(--tree-gap); min-height: 64px; padding: 18px 0; overflow-wrap: anywhere; }
      }
      @media (prefers-reduced-motion: reduce) {
        .tree-reveal,
        .tree-reveal li,
        .scroll-arrow { animation: none; transition: none; }
      }