:root {
  --brand: rgb(0, 212, 255);  /* #00d4ff: fills, borders, highlights */
  --brand-2: #7ae8ff;         /* light tint */
  --brand-3: #00a3cc;         /* deeper fill (hover, logo shading) */
  --brand-ink: #00708c;       /* brand-coloured text on white (readable contrast) */
  --ink: #0f172a;
  --ink-2: #475569;
  --ink-3: #94a3b8;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-2: #f8fafc;
  --bg-3: #e6fbff;
  --good: #059669;
  --warn: #d97706;
  --bad: #dc2626;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font: 16px/1.6 Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 .5em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 700; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 600; }
kbd { font: 600 .85em/1 ui-monospace, monospace; background: var(--bg-3); border: 1px solid var(--line); border-radius: 4px; padding: 1px 5px; }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.section { padding-block: 88px; }
.center { text-align: center; }
.kicker { color: var(--brand-ink); font-weight: 600; font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; margin: 0 0 .6em; }
.sub { color: var(--ink-2); font-size: 1.1rem; margin: 0 0 2.2em; max-width: 680px; }
.fine { color: var(--ink-3); font-size: .85rem; }

/* ---------------------------------------------------------------- buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4em;
  font: 600 .95rem/1 Inter, sans-serif; padding: .85em 1.3em; border-radius: 10px;
  border: 1px solid transparent; cursor: pointer; transition: transform .08s, box-shadow .15s, background .15s;
  text-decoration: none !important; white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--brand); color: var(--ink); box-shadow: 0 4px 14px rgba(0, 212, 255, .35); }
.btn-primary:hover:not(:disabled) { background: #33ddff; }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover:not(:disabled) { border-color: var(--brand); color: var(--brand-ink); }
.btn-sm { padding: .6em 1em; font-size: .85rem; }

/* ---------------------------------------------------------------- nav */
.nav { position: sticky; top: 0; z-index: 20; background: rgba(255, 255, 255, .85); backdrop-filter: saturate(1.6) blur(10px); border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; gap: 28px; height: 64px; }
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font: 700 1.25rem/1 Rajdhani, sans-serif; letter-spacing: .02em; text-decoration: none !important; }
.logo svg { width: 28px; height: 28px; }
.logo .tld { color: var(--brand-ink); }
.links { display: flex; gap: 22px; margin-left: auto; }
.links a { color: var(--ink-2); font-weight: 500; font-size: .95rem; }
.links a:hover { color: var(--ink); text-decoration: none; }

/* ---------------------------------------------------------------- hero */
.hero { padding: 72px 0 40px; background: radial-gradient(1200px 500px at 85% -10%, var(--bg-3), transparent 70%), radial-gradient(800px 400px at -10% 20%, #f0f9ff, transparent 70%); }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: .9rem; color: var(--ink-2); background: #fff; border: 1px solid var(--line); padding: 6px 14px; border-radius: 99px; box-shadow: var(--shadow); }
.pill { background: var(--brand); color: var(--ink); font-weight: 600; font-size: .75rem; padding: 3px 10px; border-radius: 99px; }
.grad { background: linear-gradient(90deg, #00a3cc, #0077e6 60%, #0047b3); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { font-size: 1.2rem; color: var(--ink-2); max-width: 600px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0 12px; }
.hero-visual { position: relative; margin: 0; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 14px; box-shadow: var(--shadow); }
.hero-main { width: 100%; height: auto; aspect-ratio: 900 / 1195; max-height: 600px; object-fit: cover; object-position: 50% 30%; border-radius: 12px; }
.hero-inset { position: absolute; left: -36px; bottom: 54px; width: 52%; height: auto; border: 5px solid #fff; border-radius: 12px; box-shadow: 0 12px 32px rgba(15, 23, 42, .22); }
.hero-visual figcaption { font-size: .78rem; color: var(--ink-3); text-align: center; margin-top: 10px; }

.logos { padding: 26px 0 8px; text-align: center; }
.logos p { color: var(--ink-3); font-size: .85rem; margin: 0 0 12px; }
.logos ul { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 40px; margin: 0; padding: 0; }
.logos li { font: 700 1.25rem/1 Rajdhani, sans-serif; color: var(--ink-3); letter-spacing: .04em; text-transform: uppercase; }

.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; padding-top: 48px; }
.metrics div { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; text-align: center; }
.metrics strong { display: block; font: 700 2rem/1.1 Rajdhani, sans-serif; color: var(--ink); }
.metrics span { color: var(--ink-2); font-size: .9rem; }

/* ---------------------------------------------------------------- features */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.features article { border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; background: #fff; transition: box-shadow .2s, transform .2s; }
.features article:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.features p { color: var(--ink-2); margin: 0; font-size: .96rem; }
.ficon { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 10px; background: var(--bg-3); color: var(--brand-ink); font-size: 1.2rem; margin-bottom: 14px; }

/* ---------------------------------------------------------------- gallery */
.gallery-section { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 28px; }
.gallery figure { margin: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.gallery img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; background: var(--bg-3); }
.gallery img.render { object-fit: contain; padding: 12px; }
.gallery figcaption { padding: 12px 16px 16px; font-size: .9rem; color: var(--ink-2); }
.gallery figure.missing { display: none; }

/* ---------------------------------------------------------------- studio */
.studio-section { background: linear-gradient(180deg, #fff, var(--bg-3)); }
.studio { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 28px; align-items: start; }
.panel { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 8px 24px 20px; box-shadow: var(--shadow); }
fieldset { border: 0; border-bottom: 1px solid var(--line); margin: 0; padding: 18px 0; }
fieldset:last-child { border-bottom: 0; }
legend { font-weight: 600; padding: 0; margin-bottom: 8px; }
.hint { color: var(--ink-2); font-size: .85rem; margin: 0 0 12px; }
.styles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.style-card { position: relative; border: 2px solid var(--line); border-radius: 12px; padding: 8px; cursor: pointer; text-align: center; transition: border-color .15s; }
.style-card input { position: absolute; opacity: 0; }
.style-card img { height: 110px; margin: 0 auto 6px; object-fit: contain; }
.style-card span { font-weight: 600; font-size: .9rem; }
.style-card:has(input:checked) { border-color: var(--brand); background: var(--bg-3); }
.style-card:has(input:focus-visible) { outline: 3px solid var(--brand); }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.field { display: block; }
.field > span { display: flex; justify-content: space-between; align-items: center; gap: 8px; font-size: .78rem; font-weight: 600; color: var(--ink-2); margin-bottom: 4px; }
.field input { width: 100%; font: 500 .95rem/1.2 Inter, sans-serif; padding: .6em .75em; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink); text-transform: uppercase; }
.field input[type=url] { text-transform: none; }
.field input:focus { outline: 2px solid var(--brand); border-color: var(--brand-3); }
.floor-row { display: grid; grid-template-columns: 1fr; margin-bottom: 8px; }
.badge-cap { font-weight: 600; font-size: .72rem; padding: 2px 8px; border-radius: 99px; background: var(--bg-2); color: var(--ink-3); white-space: nowrap; }
.badge-cap.good { background: #ecfdf5; color: var(--good); }
.badge-cap.warn { background: #fffbeb; color: var(--warn); }
.badge-cap.bad { background: #fef2f2; color: var(--bad); }
.preset-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }

.viewer-col { position: sticky; top: 84px; }
.viewer { position: relative; height: 560px; border-radius: 18px; overflow: hidden; background: radial-gradient(circle at 50% 30%, #ffffff, #d6f6ff 90%); border: 1px solid var(--line); box-shadow: var(--shadow); }
.viewer canvas { display: block; width: 100%; height: 100%; }
.viewer-status { position: absolute; left: 14px; top: 14px; z-index: 2; background: rgba(255, 255, 255, .9); border: 1px solid var(--line); border-radius: 99px; padding: 5px 12px; font-size: .8rem; color: var(--ink-2); }
.viewer-toggle { position: absolute; right: 14px; top: 14px; z-index: 2; display: flex; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 3px; }
.viewer-toggle button { font: 600 .8rem/1 Inter, sans-serif; border: 0; background: transparent; padding: 7px 10px; border-radius: 7px; color: var(--ink-2); cursor: pointer; }
.viewer-toggle button.active { background: var(--brand); color: var(--ink); }
.downloads { display: flex; gap: 10px; flex-wrap: wrap; margin: 16px 0 6px; }

/* ---------------------------------------------------------------- pricing */
.pricing { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.plan { position: relative; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 18px; padding: 30px; background: #fff; }
.plan.featured { border: 2px solid var(--brand); box-shadow: 0 12px 40px rgba(0, 212, 255, .22); }
.plan .badge { position: absolute; top: -13px; left: 30px; margin: 0; background: var(--brand); color: var(--ink); font-size: .75rem; font-weight: 600; padding: 4px 12px; border-radius: 99px; }
.price { color: var(--ink-2); margin: 0 0 16px; }
.price span { font: 700 2.6rem/1 Rajdhani, sans-serif; color: var(--ink); margin-right: 4px; }
.plan ul { list-style: none; padding: 0; margin: 0 0 24px; flex: 1; }
.plan li { padding: 6px 0 6px 26px; position: relative; color: var(--ink-2); }
.plan li::before { content: "✓"; position: absolute; left: 0; color: var(--brand-ink); font-weight: 700; }

/* ---------------------------------------------------------------- license */
.license-section { background: var(--ink); color: #e2e8f0; }
.license-section h2, .license-section h3 { color: #fff; }
.license-section a, .license-section .kicker { color: var(--brand); }
.license-section .fine { color: #94a3b8; }
.license-section .btn-ghost { background: transparent; color: #fff; border-color: #334155; }
.license-grid { display: grid; grid-template-columns: 1.3fr .9fr; gap: 48px; align-items: start; }
.attrib { background: #1e293b; border: 1px solid #334155; border-radius: 10px; padding: 14px 16px; font: 500 .9rem/1.4 ui-monospace, monospace; color: #e2e8f0; white-space: pre-wrap; }
.dl-list { padding-left: 1.1em; }
.dl-list li { margin: 4px 0; }
.appreciation { background: linear-gradient(160deg, #083344, #0b1726); border: 1px solid #0e7490; border-radius: 18px; padding: 30px; }
.appreciation p { color: #b5f2ff; }

/* ---------------------------------------------------------------- faq */
.faq details { border-bottom: 1px solid var(--line); padding: 16px 0; max-width: 820px; }
.faq summary { font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; }
.faq summary::after { content: "+"; color: var(--brand-ink); font-weight: 700; }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--ink-2); margin: 10px 0 0; }

/* ---------------------------------------------------------------- footer */
.footer { border-top: 1px solid var(--line); padding: 36px 0; background: var(--bg-2); }
.footer-inner { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.footer-inner > div:last-child { max-width: 560px; text-align: right; }

/* ---------------------------------------------------------------- responsive */
@media (max-width: 960px) {
  .hero-grid, .studio, .license-grid { grid-template-columns: 1fr; }
  .viewer-col { position: static; }
  .hero-visual { max-width: 560px; margin: 0 auto; }
  .hero-inset { left: 10px; }
  .viewer { height: 440px; }
  .features, .pricing, .gallery { grid-template-columns: 1fr 1fr; }
  .links { display: none; }
  .nav-inner .btn { margin-left: auto; }
}
@media (max-width: 620px) {
  .section { padding-block: 60px; }
  .hero-inset { left: 10px; bottom: 50px; width: 48%; border-width: 3px; }
  .nav-inner { gap: 10px; }
  .logo { font-size: 1.05rem; gap: 7px; }
  .logo svg { width: 22px; height: 22px; }
  .nav-inner .btn { padding: .55em .75em; font-size: .75rem; }
  .features, .pricing, .gallery, .metrics { grid-template-columns: 1fr; }
  .grid2 { grid-template-columns: 1fr; }
  .styles img { height: 80px; }
  .footer-inner > div:last-child { text-align: left; }
}
.license-section .btn-primary, .license-section .btn-primary:hover { color: var(--ink); }