:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #667085;
  --line: #e4e7ec;
  --soft: #f7f8fb;
  --panel: #ffffff;
  --accent: #1d5f8f;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: #f2f4f7; color: var(--ink); }
a { color: inherit; }
.hero { min-height: 620px; color: white; background: linear-gradient(110deg, rgba(12,18,31,.94), rgba(29,95,143,.76)), url("images/brand/gptimg2-preview.png") center / cover; display: flex; flex-direction: column; }
nav { width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding: 22px 0; display: flex; gap: 20px; align-items: center; }
nav strong { margin-right: auto; }
nav a { text-decoration: none; opacity: .9; }
.hero section { width: min(1060px, calc(100% - 32px)); margin: auto auto 64px; }
.eyebrow { margin: 0 0 14px; font-size: .76rem; letter-spacing: .08em; text-transform: uppercase; opacity: .72; }
h1 { max-width: 980px; margin: 0; font-size: clamp(2.4rem, 6vw, 5.5rem); line-height: .98; letter-spacing: 0; }
.lede { max-width: 780px; margin: 22px 0 0; color: rgba(255,255,255,.83); font-size: 1.12rem; line-height: 1.65; }
.hero-actions, .actions { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 10px; }
.primary, .secondary, button, .actions a { border: 1px solid transparent; border-radius: 8px; padding: 11px 16px; font: inherit; font-weight: 750; text-decoration: none; cursor: pointer; }
.primary, button { background: #fff; color: #11213a; }
.secondary { border-color: rgba(255,255,255,.38); color: #fff; }
main { width: min(1180px, calc(100% - 32px)); margin: 28px auto 80px; }
.proof { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; margin: -58px auto 28px; position: relative; }
.proof div { background: white; border: 1px solid var(--line); border-radius: 8px; padding: 18px; box-shadow: 0 16px 40px rgba(17,24,39,.08); }
.proof strong { display: block; font-size: 1.65rem; }
.proof span { color: var(--muted); }
.workflow-gallery, .controls, .grid, .detail-grid, .link-grid { display: grid; gap: 16px; }
.workflow-gallery { grid-template-columns: 320px 1fr; align-items: start; margin-bottom: 22px; padding: 22px; border: 1px solid var(--line); border-radius: 8px; background: white; }
.workflow-gallery h2, .content h2 { margin: 0 0 10px; font-size: 1.35rem; line-height: 1.2; }
.workflow-gallery p { margin: 0; color: var(--muted); line-height: 1.55; }
.workflow-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
figure { margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 8px; background: #f8fafc; }
figure img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; }
figcaption { display: grid; gap: 4px; padding: 10px; font-size: .78rem; }
figcaption span { color: var(--muted); line-height: 1.35; }
.controls { grid-template-columns: 1fr 220px 180px; margin-bottom: 18px; }
input, select { min-height: 46px; border: 1px solid var(--line); border-radius: 8px; padding: 0 14px; font: inherit; background: white; }
.stats { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 24px; }
.stat { padding: 10px 14px; background: white; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); }
.grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { overflow: hidden; background: white; border: 1px solid var(--line); border-radius: 8px; display: flex; flex-direction: column; }
.card img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; background: #e5e7eb; }
.card-body { padding: 16px; display: flex; flex-direction: column; gap: 11px; }
.meta { color: var(--accent); font-size: .8rem; font-weight: 800; }
h2 { margin: 0; font-size: 1.08rem; line-height: 1.28; }
.use-case, .brief { margin: 0; color: var(--muted); line-height: 1.5; }
pre { max-height: 168px; overflow: auto; margin: 0; padding: 12px; border-radius: 8px; background: var(--soft); color: #344054; white-space: pre-wrap; font-size: .78rem; line-height: 1.5; }
.scores { display: flex; flex-wrap: wrap; gap: 6px; }
.score { padding: 5px 8px; border-radius: 999px; background: #eef4ff; color: #1849a9; font-size: .71rem; font-weight: 800; }
.actions button { flex: 1; background: #11213a; color: white; }
.actions a { background: #f2f4f7; }
.subpage { color: white; background: #11213a; }
.subpage nav a { color: white; }
.content { width: min(1080px, calc(100% - 32px)); margin: 40px auto 80px; }
.content h1 { color: var(--ink); font-size: clamp(2rem, 5vw, 4.7rem); }
.content .lede { color: var(--muted); }
.detail-grid { grid-template-columns: minmax(280px, .85fr) 1fr; align-items: start; margin: 28px 0; }
.detail-image { width: 100%; border: 1px solid var(--line); border-radius: 8px; background: white; }
.panel, .content section { margin-top: 18px; padding: 20px; border: 1px solid var(--line); border-radius: 8px; background: white; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 11px 0; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { width: 190px; color: var(--muted); }
.link-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.link-card { display: grid; grid-template-columns: 150px 1fr; gap: 14px; padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: white; }
.link-card img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 6px; }
.link-card p { margin: 0 0 8px; color: var(--muted); }
.seo-hero { padding: 34px; border: 1px solid var(--line); border-radius: 8px; background: white; }
.seo-hero h1 { color: var(--ink); font-size: clamp(2rem, 5vw, 4.5rem); }
.seo-hero p { max-width: 850px; color: var(--muted); line-height: 1.65; }
.seo-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.seo-links a { border: 1px solid var(--line); border-radius: 8px; padding: 9px 12px; background: #fff; text-decoration: none; font-weight: 700; }
.guide-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.guide-list article { margin: 0; }
.faq details { padding: 14px 0; border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 800; }
.faq p { color: var(--muted); line-height: 1.6; }
.dark { color: var(--muted); }
.dark-button { display: inline-block; background: #11213a; color: white; text-decoration: none; }
@media (max-width: 920px) { .controls, .grid, .workflow-gallery, .workflow-strip, .proof, .detail-grid, .link-grid, .link-card, .guide-list { grid-template-columns: 1fr; } nav { flex-wrap: wrap; } }