:root { color-scheme: light; --ink: #14202c; --muted: #64717c; --line: #e3e7e8; --paper: #fbfcfa; --blue: #456add; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 30px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
button { font: inherit; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid #456add; outline-offset: 5px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 100; background: white; padding: 15px; }
.skip-link:focus { top: 10px; }
.welcome-header { max-width: 1280px; margin: auto; padding: 24px 40px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.welcome-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-size: 19px; font-weight: 720; letter-spacing: -.6px; }
.welcome-brand img { border-radius: 7px; }
.brand-divider { color: #cbd2d5; margin: 0 6px; font-weight: 400; }
.brand-section { font-size: 14px; letter-spacing: 0; font-weight: 550; }
.welcome-header nav { display: flex; align-items: center; gap: 30px; font-size: 13px; }
.quiet-link { text-decoration: none; color: var(--muted); }
.quiet-link:hover { color: var(--ink); }
.welcome-button { display: inline-flex; align-items: center; justify-content: center; gap: 22px; padding: 15px 22px; border: 1px solid var(--line); border-radius: 999px; font-size: 14px; font-weight: 600; text-decoration: none; background: white; transition: background .15s, transform .15s; }
.welcome-button:hover { background: #eff2f3; transform: translateY(-1px); }
.welcome-button.small { padding: 10px 17px; font-size: 13px; }
.welcome-button.primary { background: var(--ink); color: #fff; border-color: var(--ink); }
.welcome-button.primary:hover { background: #283b4b; }
.welcome-hero { max-width: 1200px; margin: auto; padding: 64px 40px 66px; display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.eyebrow { font-size: 10px; font-weight: 650; letter-spacing: .14em; line-height: 1.7; margin: 0 0 20px; }
.hero-copy .eyebrow { font-size: 12px; letter-spacing: .07em; text-transform: uppercase; display: flex; align-items: center; gap: 9px; }
.eyebrow-dot { width: 7px; height: 7px; border-radius: 50%; background: #6c9080; box-shadow: 0 0 0 4px #ebf0e9; }
h1 { font-size: clamp(40px,4vw,56px); line-height: 1.1; letter-spacing: -.055em; font-weight: 650; margin: 0 0 24px; }
h1 span { color: var(--blue); }
.hero-description { max-width: 430px; font-size: 17px; line-height: 1.75; color: var(--muted); margin: 0 0 28px; }
.hero-actions { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.explore-link { font-size: 13px; font-weight: 550; text-decoration: none; display: inline-flex; gap: 10px; }
.explore-link:hover { text-decoration: underline; }
.hero-note { font-size: 11px; color: var(--muted); line-height: 1.6; margin-top: 15px; }
.model-line { border-top: 1px solid var(--line); padding-top: 22px; margin-top: 34px; }
.model-line > span { color: var(--muted); font-size: 11px; }
.model-line p { font-size: 13px; font-weight: 600; margin: 10px 0 0; }
.model-line b { color: #b5bec3; padding: 0 12px; }
.model-badges { display: flex; flex-wrap: wrap; gap: 10px; margin: 13px 0; }
.model-badge { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 9px; padding: 9px 11px; background: white; font-size: 12px; font-weight: 600; }
.model-badge img { object-fit: contain; }
.model-line .model-availability { display: block; font-size: 10px; line-height: 1.6; }
.project-preview { min-width: 0; border: 1px solid #dde3e7; border-radius: 19px; background: #fff; box-shadow: 0 22px 65px -30px #9eafc1; position: relative; }
.preview-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 15px; padding: 15px 22px; border-bottom: 1px solid #edf0f1; font-size: 9px; letter-spacing: .09em; color: var(--muted); }
.preview-toolbar i { margin-right: 7px; }
.example-label { background: #f0f3f5; border-radius: 5px; padding: 5px 7px; font-size: 9px; letter-spacing: 0; white-space: nowrap; }
.preview-body { padding: 24px; }
.preview-heading { display: flex; align-items: center; gap: 13px; }
.preview-icon { display: grid; place-items: center; width: 43px; height: 43px; border-radius: 12px; background: #eef2fc; color: var(--blue); flex-shrink: 0; }
.preview-kicker { font-size: 8px; letter-spacing: .12em; margin: 0 0 5px; color: var(--muted); }
.preview-heading h2 { font-size: 19px; letter-spacing: -.4px; margin: 0; font-weight: 620; }
.preview-description { font-size: 11px; color: var(--muted); line-height: 1.6; margin: 14px 0 20px; }
.example-section h3 { font-size: 10px; font-weight: 550; color: var(--muted); margin: 0 0 9px; }
.example-section h3 i { margin-right: 5px; }
.example-section ul { padding: 0; margin: 0; list-style: none; }
.example-section li { font-size: 11px; padding: 9px 10px; border: 1px solid #edf0f1; border-radius: 6px; margin-bottom: 6px; }
.example-section li i { color: #8796a6; margin-right: 9px; }
.example-instructions { margin-top: 18px; padding: 13px; background: #f5f7fa; border-radius: 8px; }
.example-instructions > span { font-size: 10px; font-weight: 600; }
.example-instructions i { margin-right: 6px; color: var(--blue); }
.example-instructions p { font-size: 10px; line-height: 1.7; color: var(--muted); margin: 7px 0 0; }
.example-prompt { position: relative; margin-top: 18px; border: 1px solid #dde4f7; border-radius: 10px; padding: 12px 44px 12px 13px; box-shadow: 0 3px 10px #e8ecf230; }
.example-prompt > span:first-child { font-size: 9px; color: var(--muted); }
.example-prompt p { font-size: 11px; line-height: 1.6; margin: 6px 0 0; }
.prompt-arrow { position: absolute; right: 12px; bottom: 14px; display: grid; place-items: center; width: 25px; height: 25px; border-radius: 50%; background: var(--ink); color: white; font-size: 15px; }
.template-start { display: flex; align-items: center; justify-content: space-between; font-size: 11px; text-decoration: none; font-weight: 600; margin-top: 18px; }
.template-start:hover { color: var(--blue); }
.preview-caption { margin: 0; border-top: 1px solid #edf0f1; padding: 12px 20px; font-size: 9px; line-height: 1.6; color: var(--muted); text-align: center; }
.source-strip { max-width: 1120px; margin: 0 auto; padding: 25px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.source-strip p { font-size: 12px; color: var(--muted); }
.source-strip div { display: flex; flex-wrap: wrap; gap: 30px; }
.source-strip span { display: flex; gap: 9px; align-items: center; font-size: 12px; font-weight: 550; }
.source-strip i { font-size: 16px; color: #637587; }
.welcome-section { max-width: 1200px; padding: 90px 40px 0; margin: auto; }
.section-intro { max-width: 640px; }
.section-intro .eyebrow { color: #708174; margin-bottom: 14px; }
.section-intro h2, .welcome-faq h2 { font-size: 36px; letter-spacing: -.04em; line-height: 1.15; font-weight: 600; margin: 0 0 18px; }
.section-intro > p:last-child { color: var(--muted); font-size: 14px; line-height: 1.8; max-width: 500px; }
.steps-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 50px; margin-top: 42px; }
.step-number { color: #809689; font-size: 11px; letter-spacing: .08em; border-bottom: 1px solid var(--line); display: block; padding-bottom: 17px; margin-bottom: 22px; }
.steps-grid h3 { font-size: 17px; letter-spacing: -.3px; font-weight: 600; }
.steps-grid p { color: var(--muted); font-size: 13px; line-height: 1.85; }
.welcome-template-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 14px; margin: 32px 0 22px; }
.welcome-template { min-width: 0; cursor: pointer; display: flex; flex-direction: column; align-items: flex-start; gap: 13px; background: #fff; color: var(--ink); border: 1px solid var(--line); padding: 21px; border-radius: 12px; text-align: left; transition: border-color .15s; }
.welcome-template:hover { border-color: #9daed1; }
.welcome-template.selected { border-color: #7392e6; box-shadow: 0 0 0 1px #7392e6; background: #fafbff; }
.template-icon { display: grid; place-items: center; background: color-mix(in srgb, var(--accent) 9%, white); width: 34px; height: 34px; border-radius: 9px; color: var(--accent); font-size: 14px; }
.welcome-template strong { font-size: 14px; font-weight: 600; }
.welcome-template > span:not(.template-icon) { font-size: 12px; line-height: 1.65; color: var(--muted); }
.welcome-template .template-explore { margin-top: auto; padding-top: 10px; font-size: 11px; color: var(--ink); }
.template-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 65px; background: #f0f3f6; padding: 34px; border-radius: 14px; border: 1px solid #e2e7ed; }
.template-detail .eyebrow { margin-bottom: 10px; font-size: 9px; color: var(--muted); }
.template-detail h3 { margin: 0 0 16px; font-size: 22px; font-weight: 600; letter-spacing: -.4px; }
.template-detail p, .template-detail li { font-size: 12px; color: var(--muted); line-height: 1.9; }
.template-detail .welcome-button { margin-top: 15px; font-size: 12px; padding: 12px 17px; }
.template-detail h4 { margin: 0 0 14px; font-size: 12px; font-weight: 600; }
.template-detail ol { padding-left: 19px; margin: 0 0 22px; }
.template-detail li { padding-left: 5px; margin-bottom: 9px; color: #415062; }
.template-detail .template-signin-note { font-size: 10px; margin: 10px 0 0; }
.file-format-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 15px; margin-top: 28px; }
.file-format-grid article { padding: 23px; background: white; border: 1px solid var(--line); border-radius: 12px; }
.file-format-grid i { font-size: 22px; color: var(--blue); }
.file-format-grid h3 { font-size: 15px; margin: 17px 0 12px; }
.file-format-grid p { font-size: 13px; line-height: 1.7; }
.file-format-grid span { font-size: 12px; line-height: 1.7; color: var(--muted); }
.format-details { margin-top: 22px; font-size: 13px; line-height: 1.8; }
.format-details summary { cursor: pointer; font-weight: 600; }
.format-details p { color: var(--muted); overflow-wrap: anywhere; }
.section-note { color: var(--muted); font-size: 12px; line-height: 1.8; margin-top: 20px; }
.section-note a { text-underline-offset: 3px; }
.storage-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; margin-top: 30px; }
.storage-card { background: white; border: 1px solid var(--line); border-radius: 14px; padding: 28px; }
.storage-card:first-child { background: #f0f4ff; border-color: #d5dff6; }
.storage-card h3 { font-size: 16px; margin: 0 0 24px; }
.storage-amount { margin: 0; font-size: 44px; font-weight: 600; letter-spacing: -.04em; }
.storage-amount span { font-size: 18px; letter-spacing: 0; color: var(--muted); }
.storage-label { margin: 6px 0 22px; font-size: 12px; color: var(--muted); }
.storage-card ul { padding-left: 17px; margin: 0; font-size: 13px; line-height: 2; }
.project-guides h2 { font-size: 22px; letter-spacing: -.03em; font-weight: 600; }
.project-guides > div { display: flex; flex-wrap: wrap; gap: 12px 26px; }
.project-guides a { font-size: 13px; text-underline-offset: 4px; line-height: 1.8; }
.welcome-faq { max-width: 850px; padding-top: 90px; }
.welcome-faq h2 { font-size: 28px; margin-bottom: 28px; }
.welcome-faq details { padding: 20px 0; border-bottom: 1px solid var(--line); }
.welcome-faq summary { cursor: pointer; font-size: 14px; font-weight: 550; line-height: 1.6; }
.welcome-faq details p { color: var(--muted); font-size: 13px; line-height: 1.8; max-width: 620px; margin-bottom: 0; }
.welcome-final { text-align: center; margin: 85px 24px 60px; }
.final-icon { display: grid; place-items: center; background: #eaf0e9; color: #6c8872; width: 50px; height: 50px; border-radius: 15px; margin: 0 auto 25px; font-size: 20px; }
.welcome-final h2 { font-size: 38px; line-height: 1.2; letter-spacing: -.04em; font-weight: 550; margin: 0 0 15px; }
.welcome-final p { font-size: 14px; color: var(--muted); }
.welcome-final .welcome-button { margin-top: 14px; }
.welcome-final .plan-note { font-size: 10px; margin-top: 18px; }
.welcome-footer { border-top: 1px solid var(--line); max-width: 1120px; margin: auto; padding: 28px 0; display: flex; align-items: center; justify-content: space-between; gap: 20px; font-size: 11px; }
.welcome-footer a { text-decoration: none; font-weight: 600; }
.welcome-footer p { color: var(--muted); }
@media (max-width: 1100px) {
    .welcome-hero { gap: 36px; }
    .source-strip, .welcome-footer { margin-left: 40px; margin-right: 40px; }
    .source-strip { flex-direction: column; align-items: flex-start; gap: 10px; }
    .steps-grid { gap: 28px; }
    .file-format-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 760px) {
    .welcome-header { padding: 20px 22px; }
    .brand-divider, .brand-section, .welcome-header .quiet-link { display: none; }
    .welcome-brand { font-size: 17px; }
    .welcome-hero { grid-template-columns: 1fr; padding: 40px 24px 40px; gap: 38px; }
    h1 { font-size: 44px; max-width: 520px; }
    .hero-description { font-size: 16px; }
    .model-line { margin-top: 25px; }
    .model-badges { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); }
    .project-preview { max-width: 520px; width: 100%; margin: auto; }
    .preview-body { padding: 20px; }
    .source-strip, .welcome-footer { margin-left: 24px; margin-right: 24px; }
    .source-strip div { gap: 20px; }
    .welcome-section { padding: 58px 24px 0; }
    .section-intro h2 { font-size: 31px; }
    .steps-grid { grid-template-columns: 1fr; gap: 20px; margin-top: 28px; }
    .steps-grid h3 { margin: 0 0 8px; }
    .step-number { margin-bottom: 15px; }
    .welcome-template-grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; }
    .welcome-template { padding: 17px; }
    .template-detail { grid-template-columns: 1fr; gap: 25px; padding: 24px; }
    .storage-grid { grid-template-columns: 1fr; gap: 14px; }
    .storage-card { padding: 24px; }
    .file-format-grid { grid-template-columns: 1fr; }
    .welcome-final h2 { font-size: 32px; }
    .welcome-footer { flex-wrap: wrap; }
    .welcome-footer p { display: none; }
}
@media (max-width: 360px) {
    h1 { font-size: 38px; }
    .hero-actions { gap: 18px; }
    .model-line b { padding: 0 6px; }
    .welcome-template-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .welcome-button, .welcome-template { transition: none; } }