*, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-text);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
  }
  a { color: inherit; text-decoration: none; }
  img { display: block; max-width: 100%; }

  /* ---- layout primitives ---- */
  .wrap { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 var(--space-lg); }
  .rule { height: 1px; background: var(--rule); border: 0; width: 100%; }
  .eyebrow {
    font-family: var(--font-mono);
    font-size: var(--fs-monolabel);
    font-weight: var(--fw-monolabel);
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    color: var(--muted);
    display: inline-flex;
    align-items: center;
    gap: 10px;
  }
  .eyebrow .dot { width: 8px; height: 8px; background: var(--accent); flex: none; }
  .eyebrow.fg { color: var(--fg); }

  /* ---- nav ---- */
  header.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 50;
    transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
    border-bottom: 1px solid transparent;
  }
  header.nav.scrolled {
    background: rgba(0,0,0,0.72);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--rule);
  }
  .nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
  .wordmark { font-size: 22px; font-weight: 900; letter-spacing: -0.5px; display: inline-flex; align-items: baseline; }
  .wordmark .acc { color: var(--accent); }
  .nav-links { display: flex; align-items: center; gap: var(--space-lg); }
  .nav-link {
    font-family: var(--font-mono); font-size: var(--fs-monolabel); font-weight: 500;
    letter-spacing: var(--tracking); text-transform: uppercase; color: var(--muted);
    transition: color .15s ease;
  }
  .nav-link:hover { color: var(--fg); }

  /* ---- buttons ---- */
  .btn {
    display: inline-flex; align-items: center; gap: 12px;
    font-family: var(--font-mono); font-weight: 700; font-size: 14px;
    letter-spacing: var(--tracking-xwide); text-transform: uppercase;
    padding: 15px 26px; border-radius: var(--radius-sm);
    border: 1px solid var(--accent); color: var(--accent);
    background: var(--accent-wash);
    transition: background .18s ease, transform .12s ease, color .18s ease;
    cursor: pointer; white-space: nowrap;
  }
  .btn:hover { background: rgba(255,179,0,0.18); }
  .btn:active { transform: scale(0.985); opacity: .9; }
  .btn .arr { transition: transform .2s ease; }
  .btn:hover .arr { transform: translateX(4px); }
  .btn.solid { background: var(--accent); color: #000; border-color: var(--accent); }
  .btn.solid:hover { background: #ffc233; }
  .btn.ghost { background: transparent; border-color: var(--line-fg-20); color: var(--fg); }
  .btn.ghost:hover { border-color: var(--fg); }
  .btn.sm { padding: 10px 16px; font-size: 11px; letter-spacing: var(--tracking-wide); }

  /* ---- hero ---- */
  .hero { padding-top: 150px; padding-bottom: 96px; position: relative; }
  .hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center; }
  .hero h1 {
    font-size: clamp(48px, 7vw, 92px); font-weight: 900; line-height: 0.98;
    letter-spacing: -2px; margin: 22px 0 0; text-wrap: balance;
  }
  .hero h1 .accpunct { color: var(--accent); }
  .hero p.lead {
    font-size: clamp(17px, 1.5vw, 20px); line-height: 1.5; color: #cfcfcf;
    max-width: 46ch; margin: 26px 0 0;
  }
  .hero-cta { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; margin-top: 36px; }
  .hero-meta {
    font-family: var(--font-mono); font-size: var(--fs-mono); letter-spacing: var(--tracking-tight);
    text-transform: uppercase; color: var(--muted); margin-top: 22px;
  }

  /* ---- phone ---- */
  .phone-stage { display: flex; justify-content: center; position: relative; }
  .phone {
    position: relative; width: 312px; padding: 12px;
    background: #0c0c0c; border-radius: 54px;
    box-shadow: 0 0 0 2px #232323, 0 40px 90px -20px rgba(0,0,0,0.9), 0 0 80px -30px rgba(255,179,0,0.25);
    animation: float 7s ease-in-out infinite;
  }
  .phone .screen { border-radius: 42px; overflow: hidden; position: relative; background: #000; }
  .phone .screen img { width: 100%; height: auto; }
  .phone .island {
    position: absolute; top: 14px; left: 50%; transform: translateX(-50%);
    width: 92px; height: 28px; background: #000; border-radius: 16px; z-index: 3;
  }
  @keyframes float { 0%,100%{ transform: translateY(0); } 50%{ transform: translateY(-14px); } }
  .badge-float {
    position: absolute; z-index: 4; background: rgba(10,10,10,0.92);
    border: 1px solid var(--line-fg-15); border-radius: var(--radius-sm);
    backdrop-filter: blur(8px); padding: 11px 14px; display: flex; align-items: center; gap: 10px;
    box-shadow: 0 20px 50px -20px rgba(0,0,0,0.9);
  }
  .badge-float .lbl { font-family: var(--font-mono); font-size: 11px; letter-spacing: var(--tracking); text-transform: uppercase; }
  .badge-float .sub { font-family: var(--font-mono); font-size: 10px; color: var(--muted); letter-spacing: 1px; }
  .badge-tl { top: 40px; left: -34px; animation: float 7s ease-in-out infinite; animation-delay: .6s; }
  .badge-br { bottom: 70px; right: -30px; animation: float 7s ease-in-out infinite; animation-delay: 1.2s; }
  .badge-float i { color: var(--accent); }

  /* ---- works-with strip ---- */
  .strip { padding: 24px 0; }
  .strip-inner { display: flex; align-items: center; justify-content: center; gap: 22px; flex-wrap: wrap; }
  .strip .label { font-family: var(--font-mono); font-size: 11px; letter-spacing: var(--tracking-wide); text-transform: uppercase; color: var(--muted); }
  .strip .src { font-family: var(--font-mono); font-size: 13px; letter-spacing: var(--tracking); text-transform: uppercase; color: var(--fg); }
  .strip .sq { width: 6px; height: 6px; background: var(--accent); }

  /* ---- section header ---- */
  section { padding: 86px 0; }
  .sec-head { max-width: 720px; }
  .sec-head h2 {
    font-size: clamp(32px, 4.4vw, 52px); font-weight: 900; line-height: 1.04;
    letter-spacing: -1.2px; margin: 16px 0 0; text-wrap: balance;
  }

  /* ---- steps ---- */
  .steps { margin-top: 56px; display: grid; gap: 0; }
  .step {
    display: grid; grid-template-columns: 110px 1fr; gap: 32px; align-items: start;
    padding: 36px 0; border-top: 1px solid var(--rule);
  }
  .step:last-child { border-bottom: 1px solid var(--rule); }
  .step .num { font-family: var(--font-mono); font-size: 56px; font-weight: 400; color: var(--accent); line-height: 1; letter-spacing: -2px; }
  .step h3 { font-size: 24px; font-weight: 700; margin: 0 0 8px; letter-spacing: -0.3px; }
  .step p { font-size: 17px; line-height: 1.5; color: var(--muted); margin: 0; max-width: 52ch; }

  /* ---- demo band ---- */
  .demo { border: 1px solid var(--rule); border-radius: var(--radius-md); padding: 40px; margin-top: 56px; background: var(--surface-sunken); }
  .demo-top { display: flex; align-items: center; gap: 14px; }
  .demo-input {
    flex: 1; display: flex; align-items: center; gap: 12px;
    border: 1px solid var(--line-fg-20); border-radius: var(--radius-sm);
    padding: 0 6px 0 16px; height: 56px; background: #000;
  }
  .demo-input i { color: var(--muted); }
  .demo-input .url { font-family: var(--font-mono); font-size: 14px; color: var(--fg); letter-spacing: .3px; white-space: nowrap; overflow: hidden; }
  .demo-input .url .caret { display: inline-block; width: 2px; height: 16px; background: var(--accent); margin-left: 2px; vertical-align: -3px; animation: blink 1s steps(2) infinite; }
  @keyframes blink { 50% { opacity: 0; } }
  .demo-go {
    width: 44px; height: 44px; flex: none; display: grid; place-items: center;
    background: var(--accent); color: #000; border-radius: var(--radius-sm); border: 0; cursor: pointer;
    transition: transform .12s ease;
  }
  .demo-go:active { transform: scale(.93); }
  .feed { margin-top: 26px; display: flex; flex-direction: column; gap: 0; }
  .feed-line {
    display: flex; align-items: center; gap: 14px; padding: 11px 0;
    font-size: 16px; color: var(--muted); opacity: 0; transform: translateY(6px);
    transition: opacity .4s ease, transform .4s ease, color .3s ease;
  }
  .feed-line.show { opacity: 1; transform: none; }
  .feed-line.active { color: var(--fg); }
  .feed-line.done { color: var(--fg); }
  .feed-mark { width: 14px; height: 14px; flex: none; display: grid; place-items: center; }
  .feed-mark .sq { width: 11px; height: 11px; background: var(--accent); }
  .feed-line.active .feed-mark .sq { animation: pulse 1.1s ease-in-out infinite; }
  .feed-line.done .feed-mark .sq { background: transparent; }
  .feed-line.done .feed-mark .ck { color: var(--accent); }
  @keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: .35; transform: scale(1.3); } }
  .feed-mark .ck { display: none; }
  .feed-line.done .feed-mark .ck { display: block; }

  /* ---- photo band ---- */
  .gallery { margin-top: 56px; display: grid; grid-template-columns: 1.6fr 1fr; gap: var(--space-md); }
  .gallery .col { display: grid; gap: var(--space-md); }
  .shot { position: relative; border-radius: var(--radius-md); overflow: hidden; }
  .shot image-slot { display: block; width: 100%; }
  .shot .tag {
    position: absolute; left: 14px; bottom: 14px; z-index: 2;
    font-family: var(--font-mono); font-size: 11px; letter-spacing: var(--tracking); text-transform: uppercase;
    color: var(--fg); background: var(--scrim-75); border: 1px solid var(--line-fg-15);
    border-radius: var(--radius-sm); padding: 7px 11px; display: inline-flex; align-items: center; gap: 8px;
  }
  .shot .tag .sq { width: 7px; height: 7px; background: var(--accent); }

  /* ---- features ---- */
  .feat-grid { margin-top: 56px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); }
  .feat {
    padding: 34px 30px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
    transition: background .2s ease;
  }
  .feat:hover { background: var(--surface-sunken); }
  .feat .ic { width: 44px; height: 44px; border: 1px solid var(--line-fg-20); border-radius: var(--radius-sm); display: grid; place-items: center; color: var(--accent); margin-bottom: 20px; }
  .feat h3 { font-size: 19px; font-weight: 700; margin: 0 0 8px; letter-spacing: -0.2px; }
  .feat p { font-size: 15px; line-height: 1.5; color: var(--muted); margin: 0; }

  /* ---- final cta ---- */
  .final { text-align: center; }
  .final .ic-app { width: 76px; height: 76px; border-radius: 18px; margin: 0 auto 28px; box-shadow: 0 0 60px -15px rgba(255,179,0,0.45); }
  .final h2 { font-size: clamp(36px, 6vw, 68px); font-weight: 900; line-height: 1.0; letter-spacing: -1.6px; margin: 0 auto; max-width: 16ch; text-wrap: balance; }
  .final .btn { margin-top: 36px; }
  .final .meta { font-family: var(--font-mono); font-size: var(--fs-mono); letter-spacing: var(--tracking-tight); text-transform: uppercase; color: var(--muted); margin-top: 20px; }

  /* ---- qr download (final cta, desktop) ---- */
  .final .qr-download { display: inline-flex; align-items: center; gap: 18px; margin-top: 44px; padding: 18px; border: 1px solid var(--rule); border-radius: var(--radius-md); background: var(--surface-sunken); text-align: left; }
  .final .qr-tile { width: 104px; height: 104px; background: #fff; border-radius: var(--radius-sm); padding: 8px; flex: none; }
  .final .qr-tile svg { display: block; width: 100%; height: 100%; }
  .final .qr-cap .l1 { font-family: var(--font-mono); font-size: 12px; font-weight: 500; letter-spacing: var(--tracking-wide); text-transform: uppercase; color: var(--fg); display: inline-flex; align-items: baseline; gap: 9px; }
  .final .qr-cap .l1 .sq { width: 7px; height: 7px; background: var(--accent); flex: none; transform: translateY(1px); }
  .final .qr-cap .l2 { font-family: var(--font-mono); font-size: 11px; letter-spacing: var(--tracking); text-transform: uppercase; color: var(--muted); margin-top: 9px; max-width: 17ch; line-height: 1.5; }

  /* ---- footer ---- */
  footer { padding: 40px 0 56px; border-top: 1px solid var(--rule); }
  .foot-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
  .foot-links { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
  .foot-links a, .foot-links span { font-family: var(--font-mono); font-size: 11px; letter-spacing: var(--tracking); text-transform: uppercase; color: var(--muted); transition: color .15s ease; }
  .foot-links a:hover { color: var(--accent); }

  /* ---- reveal animation ---- */
  .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
  .reveal.in { opacity: 1; transform: none; }
  .reveal.d1 { transition-delay: .08s; } .reveal.d2 { transition-delay: .16s; }
  .reveal.d3 { transition-delay: .24s; } .reveal.d4 { transition-delay: .32s; }
  .reveal.d5 { transition-delay: .40s; }

  @media (prefers-reduced-motion: reduce) {
    .phone, .badge-float { animation: none !important; }
    .reveal { opacity: 1; transform: none; transition: none; }
    html { scroll-behavior: auto; }
  }

  /* ---- responsive ---- */
  @media (max-width: 900px) {
    .hero-grid { grid-template-columns: 1fr; gap: 48px; }
    .hero { padding-top: 120px; padding-bottom: 64px; }
    .feat-grid { grid-template-columns: repeat(2, 1fr); }
    .gallery { grid-template-columns: 1fr; }
    .step { grid-template-columns: 70px 1fr; gap: 20px; }
    .step .num { font-size: 40px; }
    .demo { padding: 26px; }
  }
  @media (max-width: 560px) {
    .feat-grid { grid-template-columns: 1fr; }
    .nav-links .nav-link.hide-sm { display: none; }
    .badge-float { display: none; }
    .final .qr-download { display: none; }
    .demo-input .url { font-size: 12px; }
    section { padding: 64px 0; }
  }