:root {
    color-scheme: dark;
    --bg: #0a0a0f;
    --surface: #12121b;
    --surface-2: #171722;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.14);
    --text: #ececf1;
    --muted: #9b9ba6;
    --faint: #6b6b76;
    --accent: #6366f1;
    --accent-2: #a855f7;
    --accent-soft: rgba(99, 102, 241, 0.14);
    --green: #34d399;
    --red: #fb7185;
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text);
    background:
      radial-gradient(55rem 35rem at 50% -12%, rgba(99, 102, 241, 0.14), transparent 60%),
      radial-gradient(40rem 30rem at 90% 10%, rgba(168, 85, 247, 0.08), transparent 55%),
      var(--bg);
    -webkit-font-smoothing: antialiased;
    line-height: 1.6;
  }
  a { color: inherit; }
  .wrap { max-width: 68rem; margin: 0 auto; padding: 0 1.25rem; }

  /* Header */
  header.site {
    position: sticky; top: 0; z-index: 20;
    backdrop-filter: blur(12px);
    background: rgba(10, 10, 15, 0.72);
    border-bottom: 1px solid var(--border);
  }
  .site-inner { display: flex; align-items: center; justify-content: space-between; height: 3.75rem; }
  .logo { display: flex; align-items: center; gap: 0.55rem; font-weight: 700; letter-spacing: -0.01em; }
  .logo .mark {
    width: 1.75rem; height: 1.75rem; border-radius: 0.5rem;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    display: grid; place-items: center; font-size: 0.9rem;
  }
  nav a { margin-left: 1.25rem; font-size: 0.875rem; color: var(--muted); text-decoration: none; transition: color .15s; }
  nav a:hover { color: var(--text); }
  nav a.try {
    margin-left: 1.25rem; padding: 0.45rem 0.9rem; border-radius: 0.6rem;
    background: var(--accent); color: #fff; font-weight: 600;
  }
  nav a.try:hover { background: #4f52e0; color: #fff; }

  /* Hero */
  .hero { text-align: center; padding: 4.5rem 0 2rem; }
  .badge {
    display: inline-flex; align-items: center; gap: 0.5rem;
    border: 1px solid var(--border-strong); background: var(--surface);
    border-radius: 9999px; padding: 0.3rem 0.85rem;
    font-size: 0.8rem; color: var(--muted); margin-bottom: 1.25rem;
  }
  .badge .dot { width: 0.4rem; height: 0.4rem; border-radius: 9999px; background: var(--green); box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.15); }
  h1 { font-size: clamp(2rem, 5.4vw, 3.25rem); line-height: 1.1; letter-spacing: -0.03em; margin: 0; font-weight: 800; }
  h1 .grad {
    background: linear-gradient(90deg, #c7d2fe, #c4b5fd, #f0abfc);
    -webkit-background-clip: text; background-clip: text; color: transparent;
  }
  .hero > p.sub { max-width: 40rem; margin: 1.1rem auto 0; color: var(--muted); font-size: 1.05rem; }
  .trust { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.5rem; margin-top: 1.5rem; }
  .trust span { font-size: 0.8rem; color: var(--faint); border: 1px solid var(--border); border-radius: 9999px; padding: 0.28rem 0.75rem; }

  /* Tool */
  section { scroll-margin-top: 5rem; }
  .tool-shell {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 1.25rem; padding: 1.25rem;
    box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.7);
  }
  #dropzone {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    border: 2px dashed var(--border-strong); border-radius: 1rem;
    background: var(--surface-2); padding: 3.25rem 1.5rem; text-align: center;
    cursor: pointer; transition: border-color .15s, background .15s;
  }
  #dropzone:hover { border-color: var(--accent); }
  #dropzone.drag { border-color: var(--accent); background: var(--accent-soft); }
  #dropzone .icon {
    width: 3.25rem; height: 3.25rem; border-radius: 0.9rem;
    background: var(--accent-soft); color: #a5b4fc;
    display: grid; place-items: center; margin-bottom: 1rem;
  }
  #dropzone strong { font-weight: 600; font-size: 1.02rem; }
  #dropzone small { color: var(--faint); font-size: 0.85rem; margin-top: 0.3rem; }

  #status { margin-top: 1.25rem; display: flex; align-items: center; justify-content: center; gap: 0.75rem; color: var(--muted); font-size: 0.9rem; }
  #status.error { color: #fda4af; }
  .spinner { width: 1rem; height: 1rem; border-radius: 9999px; border: 2px solid #3a3a44; border-top-color: var(--accent); animation: spin .8s linear infinite; }
  @keyframes spin { to { transform: rotate(360deg); } }
  [hidden] { display: none !important; }

  #result { margin-top: 1.25rem; }
  .card { border: 1px solid var(--border); border-radius: 1rem; background: var(--surface-2); padding: 1.25rem; }
  .card .row { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; margin-bottom: 0.75rem; }
  .name { font-size: 0.9rem; font-weight: 500; word-break: break-all; }
  .name .arrow { color: var(--faint); margin: 0 0.3rem; }
  .pill { flex-shrink: 0; border-radius: 9999px; padding: 0.3rem 0.75rem; font-size: 0.75rem; font-weight: 600; }
  .pill.ok { background: rgba(52, 211, 153, 0.14); color: #6ee7b7; }
  .pill.none { background: #1d1d26; color: var(--muted); font-weight: 500; }
  .meta-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--faint); margin: 1rem 0 0.5rem; font-weight: 600; }
  .meta { display: flex; flex-wrap: wrap; gap: 0.5rem; }
  .chip { border-radius: 0.5rem; padding: 0.28rem 0.65rem; font-size: 0.75rem; background: #1d1d26; color: #d4d4d8; }
  .chip.ai { background: rgba(251, 113, 133, 0.13); color: #fda4af; box-shadow: inset 0 0 0 1px rgba(251, 113, 133, 0.35); }
  .previews { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1rem; }
  .previews figure { margin: 0; }
  .previews figcaption { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--faint); margin-bottom: 0.5rem; font-weight: 600; }
  .previews img { width: 100%; border: 1px solid var(--border); border-radius: 0.75rem; background: #0b0b12; object-fit: contain; }
  button, a.btn {
    display: flex; align-items: center; justify-content: center; gap: 0.5rem;
    border-radius: 0.75rem; padding: 0.85rem 1rem; font-size: 0.95rem; font-weight: 600;
    cursor: pointer; text-decoration: none; font-family: inherit; border: none;
  }
  a.btn { width: 100%; background: var(--accent); color: #fff; margin-top: 1rem; transition: background .15s; }
  a.btn:hover { background: #4f52e0; }
  button.secondary { width: 100%; background: transparent; color: var(--muted); border: 1px solid var(--border); margin-top: 0.5rem; transition: background .15s; }
  button.secondary:hover { background: var(--surface-2); }

  /* Sections */
  .section { padding: 4rem 0; }
  .section h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); letter-spacing: -0.02em; margin: 0 0 0.5rem; }
  .section .lead { color: var(--muted); max-width: 44rem; margin: 0 0 2rem; }
  .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 1rem; }
  .tile { background: var(--surface); border: 1px solid var(--border); border-radius: 1rem; padding: 1.5rem; transition: border-color .15s, transform .15s; }
  .tile:hover { border-color: var(--border-strong); transform: translateY(-2px); }
  .tile .ic { font-size: 1.6rem; margin-bottom: 0.75rem; display: block; }
  .tile h3 { margin: 0 0 0.4rem; font-size: 1.05rem; letter-spacing: -0.01em; }
  .tile p { margin: 0; color: var(--muted); font-size: 0.9rem; }

  .steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: 1rem; }
  .step { background: var(--surface); border: 1px solid var(--border); border-radius: 1rem; padding: 1.5rem; position: relative; }
  .step .n { font-size: 0.75rem; font-weight: 700; color: var(--accent-2); letter-spacing: 0.08em; text-transform: uppercase; }
  .step h3 { margin: 0.5rem 0 0.4rem; font-size: 1.02rem; }
  .step p { margin: 0; color: var(--muted); font-size: 0.9rem; }

  .plat { display: flex; align-items: center; gap: 0.9rem; background: var(--surface); border: 1px solid var(--border); border-radius: 1rem; padding: 1.1rem 1.25rem; }
  .plat .logo-sq { width: 2.4rem; height: 2.4rem; border-radius: 0.6rem; background: var(--surface-2); display: grid; place-items: center; font-weight: 700; font-size: 0.8rem; color: var(--muted); }
  .plat .nm { font-weight: 600; font-size: 0.95rem; }
  .plat .ds { color: var(--faint); font-size: 0.8rem; }
  .plat .st { margin-left: auto; font-size: 0.72rem; font-weight: 600; padding: 0.2rem 0.6rem; border-radius: 9999px; white-space: nowrap; }
  .st.yes { background: rgba(52, 211, 153, 0.12); color: #6ee7b7; }
  .st.part { background: rgba(251, 191, 36, 0.12); color: #fcd34d; }

  .note {
    margin-top: 1.5rem; border: 1px solid var(--border); border-left: 3px solid var(--accent);
    background: var(--surface); border-radius: 0.75rem; padding: 1.1rem 1.25rem; font-size: 0.9rem; color: var(--muted);
  }
  .note strong { color: var(--text); }

  details {
    background: var(--surface); border: 1px solid var(--border); border-radius: 0.9rem;
    padding: 1.1rem 1.25rem; margin-bottom: 0.75rem;
  }
  details summary { cursor: pointer; font-weight: 600; font-size: 0.98rem; list-style: none; display: flex; justify-content: space-between; align-items: center; }
  details summary::-webkit-details-marker { display: none; }
  details summary::after { content: "+"; font-size: 1.2rem; color: var(--faint); font-weight: 400; }
  details[open] summary::after { content: "−"; }
  details p { margin: 0.7rem 0 0; color: var(--muted); font-size: 0.9rem; }

  footer { border-top: 1px solid var(--border); padding: 2.5rem 0 3rem; margin-top: 2rem; color: var(--faint); font-size: 0.82rem; }
  footer .f-inner { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; }
  footer a { color: var(--muted); text-decoration: none; }
  footer a:hover { color: var(--text); }

  @media (max-width: 640px) {
    nav a:not(.try) { display: none; }
    .previews { grid-template-columns: 1fr; }
  }


/* ---- Subpage additions ---- */
.hero.left { text-align: left; padding: 3rem 0 1.25rem; }
.hero.left .trust { justify-content: flex-start; }
.breadcrumb { font-size: 0.8rem; color: var(--faint); margin-bottom: 1.25rem; }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--text); }
.tool-slot { padding: 0 0 4rem; scroll-margin-top: 5rem; }
.related { margin-top: 0.5rem; }
.related ul { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); gap: 0.5rem; }
.related li a { display: block; padding: 0.7rem 0.9rem; background: var(--surface); border: 1px solid var(--border); border-radius: 0.7rem; color: var(--muted); text-decoration: none; font-size: 0.88rem; transition: border-color .15s, color .15s; }
.related li a:hover { border-color: var(--border-strong); color: var(--text); }

/* ---- Footer columns + clickable tiles ---- */
.f-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); gap: 2rem; padding: 1.5rem 0 2rem; }
.f-h { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--faint); font-weight: 700; margin-bottom: 0.75rem; }
.f-cols a { display: block; color: var(--muted); text-decoration: none; font-size: 0.88rem; padding: 0.22rem 0; }
.f-cols a:hover { color: var(--text); }
a.tile { display: block; text-decoration: none; color: inherit; }