:root {
    color-scheme: dark;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", sans-serif;
    font-synthesis: none;
    text-rendering: optimizeLegibility;
    --app-bg: #080c13;
    --app-fg: #f4f7fb;
    --panel: color-mix(in srgb, var(--app-fg) 7%, transparent);
    --panel-strong: color-mix(in srgb, var(--app-fg) 12%, transparent);
    --line: color-mix(in srgb, var(--app-fg) 18%, transparent);
    --muted: color-mix(in srgb, var(--app-fg) 62%, transparent);
    --accent: #78A6FF;
    --accent-soft: color-mix(in srgb, #78A6FF 22%, transparent);
    --success: #8FE3B0;
    --danger: #ef8f8f;
    --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; min-height: 100%; width: 100%; }
body {
    min-width: 320px;
    min-height: 100vh;
    overflow-x: hidden;
    background:
        radial-gradient(circle at 50% 18%, color-mix(in srgb, #3B82F6 11%, transparent), transparent 35rem),
        var(--app-bg);
    color: var(--app-fg);
    line-height: 1.55;
}
a { color: inherit; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }

.site-shell { min-height: 100vh; display: flex; flex-direction: column; }
.site-main { flex: 1; }
.container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }

.site-header {
    position: static;
    display: grid;
    grid-template-columns: minmax(13rem, 1fr) auto;
    align-items: center;
    gap: 1rem;
    min-height: 78px;
    padding: 12px clamp(16px, 3vw, 34px);
    background: color-mix(in srgb, var(--app-bg) 88%, transparent);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(18px);
}

.brand {
    justify-self: start;
    display: inline-flex;
    align-items: center;
    gap: .65rem;
    color: var(--app-fg);
    text-decoration: none;
    font-weight: 780;
    letter-spacing: -.025em;
}
.brand-mark {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: var(--panel);
    font-size: .72rem;
    letter-spacing: .08em;
}
.brand-name { font-size: 1rem; }

.nav-toggle {
    display: none;
    justify-self: end;
    min-height: 42px;
    padding: 0 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--panel);
    cursor: pointer;
    font-weight: 760;
}
.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav a {
    padding: 9px 12px;
    border: 1px solid transparent;
    border-radius: 999px;
    color: var(--muted);
    text-decoration: none;
    font-size: .9rem;
    font-weight: 700;
}
.site-nav a:hover, .site-nav a[aria-current="page"] {
    color: var(--app-fg);
    border-color: var(--line);
    background: var(--panel);
}

.subtitle {
    color: var(--accent);
    font-size: .76rem;
    font-weight: 820;
    letter-spacing: .13em;
    text-transform: uppercase;
}
.hero {
    padding: clamp(68px, 10vw, 130px) 0 clamp(54px, 8vw, 96px);
}
.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr);
    gap: clamp(34px, 7vw, 90px);
    align-items: center;
}
.hero h1, .page-hero h1 {
    margin: .15em 0 .28em;
    max-width: 14ch;
    font-size: clamp(3.2rem, 8vw, 7rem);
    line-height: .91;
    letter-spacing: -.065em;
}
.hero .lead, .page-hero .lead {
    max-width: 66ch;
    margin: 0;
    color: var(--muted);
    font-size: clamp(1.05rem, 2vw, 1.28rem);
}
.hero-actions, .button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 18px;
    border: 1px solid var(--line);
    border-radius: 13px;
    text-decoration: none;
    font-weight: 780;
    cursor: pointer;
}
.button-primary { background: var(--app-fg); color: var(--app-bg); }
.button-secondary { background: var(--panel); color: var(--app-fg); }
.button:hover { filter: brightness(.96); }

.hero-demo {
    position: relative;
    min-height: 430px;
    border: 1px solid var(--line);
    border-radius: 34px;
    background: color-mix(in srgb, var(--app-fg) 3%, transparent);
    overflow: hidden;
    box-shadow: 0 30px 90px rgba(0,0,0,.28);
}
.hero-demo::before {
    content: "";
    position: absolute;
    left: 50%; top: 50%;
    width: 54%; height: 54%;
    transform: translate(-50%, -50%);
    border: 1px dashed color-mix(in srgb, var(--accent) 45%, var(--line));
    border-radius: 50%;
    opacity: .75;
}
.hero-demo::after {
    content: "AI-enhanced web design → build → learn → improve";
    position: absolute;
    left: 50%; bottom: 16px;
    transform: translateX(-50%);
    width: max-content;
    max-width: calc(100% - 30px);
    color: var(--muted);
    font-size: .76rem;
    font-weight: 760;
    text-align: center;
}
.demo-card {
    position: absolute;
    display: grid;
    place-items: center;
    width: min(36%, 168px);
    min-height: 86px;
    padding: 13px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: color-mix(in srgb, var(--app-bg) 82%, var(--app-fg) 5%);
    text-align: center;
    font-weight: 750;
    box-shadow: 0 18px 50px rgba(0,0,0,.14);
    z-index: 3;
}
.demo-card.one { left: 7%; top: 12%; }
.demo-card.two { right: 7%; top: 12%; }
.demo-card.three { right: 7%; bottom: 17%; }
.demo-card.four { left: 7%; bottom: 17%; }
.demo-card b {
    display: inline-grid;
    place-items: center;
    width: 23px; height: 23px;
    margin-right: 5px;
    border: 1px solid var(--line);
    border-radius: 50%;
    font-size: .68rem;
}
.demo-dial {
    position: absolute;
    left: 50%; top: 50%;
    transform: translate(-50%, -50%);
    width: 116px; height: 116px;
    display: grid;
    place-items: center;
    align-content: center;
    border: 1px solid color-mix(in srgb, var(--accent) 68%, var(--line));
    border-radius: 50%;
    background:
        radial-gradient(circle at 38% 32%, color-mix(in srgb, var(--app-fg) 13%, transparent), transparent 26%),
        color-mix(in srgb, var(--accent) 9%, var(--app-bg));
    box-shadow: 0 0 0 18px color-mix(in srgb, var(--accent) 4%, transparent), 0 22px 60px rgba(0,0,0,.30);
    z-index: 2;
    text-align: center;
}
.demo-dial span { display: block; font-weight: 850; letter-spacing: .04em; }
.demo-dial small { display: block; margin-top: 2px; color: var(--muted); font-size: .66rem; font-weight: 700; }

.demo-card span { display: block; }
.demo-card small { display: block; margin-top: 5px; color: var(--muted); font-size: .72rem; font-weight: 620; line-height: 1.25; }
.contact-note { margin-top: 22px; font-size: .84rem; }

.demo-pointer {
    display: none;
    position: absolute;
    left: 50%; top: 37%;
    width: 24px; height: 112px;
    transform: translate(-50%, -50%) rotate(-57deg);
    transform-origin: 50% 100%;
    clip-path: polygon(50% 0, 91% 20%, 68% 23%, 62% 100%, 38% 100%, 32% 23%, 9% 20%);
    background: linear-gradient(90deg, #9ec5ff, #f4f7fb 50%, #9ec5ff);
    filter: drop-shadow(0 4px 5px rgba(0,0,0,.34));
    z-index: 2;
}

.demo-card span { display: block; }
.demo-card small { display: block; margin-top: 5px; color: var(--muted); font-size: .72rem; font-weight: 620; line-height: 1.25; }
.contact-note { margin-top: 22px; font-size: .84rem; }

.section { padding: clamp(62px, 8vw, 104px) 0; border-top: 1px solid var(--line); }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading h2 {
    margin: .18em 0 .28em;
    font-size: clamp(2.1rem, 5vw, 4.5rem);
    line-height: .98;
    letter-spacing: -.055em;
}
.section-heading p { margin: 0; color: var(--muted); font-size: 1.05rem; }

.cards-3, .cards-2 {
    display: grid;
    gap: 16px;
}
.cards-3 { grid-template-columns: repeat(3, 1fr); }
.cards-2 { grid-template-columns: repeat(2, 1fr); }
.info-card, .feature-panel, .legal-card, .contact-card {
    border: 1px solid var(--line);
    border-radius: 22px;
    background: var(--panel);
}
.info-card { padding: clamp(22px, 3vw, 30px); }
.info-card .number {
    display: grid;
    place-items: center;
    width: 34px; height: 34px;
    border: 1px solid var(--line);
    border-radius: 50%;
    color: var(--accent);
    font-weight: 850;
    font-variant-numeric: tabular-nums;
}
.info-card h3 { margin: 18px 0 8px; font-size: 1.2rem; }
.info-card p { margin: 0; color: var(--muted); }

.feature-panel {
    padding: clamp(26px, 4vw, 42px);
    background:
        linear-gradient(180deg, color-mix(in srgb, var(--app-bg) 94%, #14264a 6%), var(--app-bg));
}
.feature-panel h3 { margin: 8px 0 10px; font-size: clamp(1.5rem, 3vw, 2.2rem); letter-spacing: -.035em; }
.feature-panel p { color: var(--muted); }
.keyword-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.keyword-phrase {
    padding: 8px 11px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--panel);
    color: var(--muted);
    font-size: .78rem;
    font-weight: 760;
}

.ai-section {
    position: relative;
    overflow: hidden;
}
.ai-section::before {
    content: "";
    position: absolute;
    inset: 15% -20% auto auto;
    width: 42rem; height: 42rem;
    border-radius: 50%;
    background: color-mix(in srgb, var(--accent) 9%, transparent);
    filter: blur(40px);
    pointer-events: none;
}
.ai-grid { position: relative; display: grid; grid-template-columns: .9fr 1.1fr; gap: 24px; align-items: start; }
.ai-use-list { display: grid; gap: 10px; }
.ai-use {
    padding: 16px 18px;
    border: 1px solid var(--line);
    border-radius: 15px;
    background: color-mix(in srgb, var(--app-bg) 80%, var(--app-fg) 3%);
}
.ai-use strong { display: block; margin-bottom: 3px; }
.ai-use span { color: var(--muted); font-size: .9rem; }

.page-hero { padding: clamp(54px, 8vw, 90px) 0 44px; }
.page-hero h1 { max-width: 16ch; font-size: clamp(2.8rem, 7vw, 6rem); }
.prose-layout { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 54px; align-items: start; padding-bottom: 90px; }
.prose { min-width: 0; }
.prose section { padding: 30px 0; border-top: 1px solid var(--line); }
.prose section:first-child { border-top: 0; padding-top: 0; }
.prose h2 { margin: 0 0 10px; font-size: clamp(1.45rem, 3vw, 2.15rem); letter-spacing: -.03em; }
.prose h3 { margin: 24px 0 8px; font-size: 1.05rem; }
.prose p, .prose li { color: color-mix(in srgb, var(--app-fg) 78%, transparent); }
.prose ul { padding-left: 1.2rem; }
.prose li + li { margin-top: .55rem; }
.prose code { color: var(--app-fg); overflow-wrap: anywhere; }
.side-nav {
    position: sticky;
    top: 24px;
    display: grid;
    gap: 7px;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--panel);
}
.side-nav strong { margin-bottom: 4px; font-size: .78rem; color: var(--muted); text-transform: uppercase; letter-spacing: .09em; }
.side-nav a { color: var(--muted); text-decoration: none; font-size: .88rem; }
.side-nav a:hover { color: var(--app-fg); }
.note {
    padding: 16px 18px;
    border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--line));
    border-radius: 16px;
    background: var(--accent-soft);
    color: color-mix(in srgb, var(--app-fg) 86%, transparent);
}

.contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 24px; padding-bottom: 90px; }
.contact-card { padding: clamp(24px, 4vw, 38px); }
.contact-card h2 { margin-top: 0; }
.contact-list { display: grid; gap: 12px; margin-top: 24px; }
.contact-list div { padding: 14px 16px; border: 1px solid var(--line); border-radius: 14px; background: color-mix(in srgb, var(--app-fg) 3%, transparent); }
.contact-list strong { display: block; font-size: .9rem; }
.contact-list span { color: var(--muted); font-size: .84rem; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-field { display: grid; gap: 7px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { color: var(--muted); font-size: .78rem; font-weight: 760; }
.form-field input, .form-field textarea, .form-field select {
    width: 100%;
    min-height: 48px;
    padding: 11px 13px;
    border: 1px solid var(--line);
    border-radius: 13px;
    outline: none;
    background: color-mix(in srgb, var(--app-bg) 86%, black 8%);
    color: var(--app-fg);
}
.form-field textarea { min-height: 170px; resize: vertical; }
.form-field input:focus, .form-field textarea:focus, .form-field select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.consent-row { grid-column: 1 / -1; display: flex; gap: 10px; align-items: flex-start; color: var(--muted); font-size: .82rem; }
.consent-row input { margin-top: 4px; }
.form-status { display: none; margin: 0 0 16px; padding: 12px 14px; border: 1px solid color-mix(in srgb, var(--success) 50%, var(--line)); border-radius: 13px; color: var(--success); background: color-mix(in srgb, var(--success) 10%, transparent); }
.form-status.show { display: block; }

.site-footer {
    border-top: 1px solid var(--line);
    background: color-mix(in srgb, var(--app-bg) 92%, black 8%);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr .8fr;
    gap: 34px;
    padding: 42px 0 28px;
}
.footer-brand p { max-width: 55ch; color: var(--muted); margin: 12px 0 0; font-size: .9rem; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 9px 16px; align-content: start; }
.footer-links a { color: var(--muted); text-decoration: none; font-size: .88rem; }
.footer-links a:hover { color: var(--app-fg); }
.footer-bottom { display: flex; justify-content: space-between; gap: 18px; padding: 18px 0 28px; border-top: 1px solid var(--line); color: var(--muted); font-size: .78rem; }

@media (max-width: 900px) {
    .hero-grid, .ai-grid, .contact-grid, .prose-layout { grid-template-columns: 1fr; }
    .hero h1 { max-width: 12ch; }
    .hero-demo { min-height: 390px; }
    .side-nav { position: static; order: -1; grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .side-nav strong { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
    .site-header { grid-template-columns: minmax(0, 1fr) auto; min-height: 70px; }
    .nav-toggle { display: inline-flex; align-items: center; }
    .site-nav {
        display: none;
        grid-column: 1 / -1;
        width: 100%;
        padding: 10px 0 2px;
        border-top: 1px solid var(--line);
    }
    .site-nav.open { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .site-nav a { border-color: var(--line); background: var(--panel); }
    .cards-3, .cards-2 { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-links { justify-content: flex-start; }
    .footer-bottom { flex-direction: column; }
}

@media (max-width: 520px) {
    .container { width: calc(100% - 24px); }
    .site-header { padding-inline: 12px; }
    .brand-mark { width: 34px; height: 34px; }
    .brand-name { font-size: .9rem; }
    .hero { padding-top: 54px; }
    .hero h1, .page-hero h1 { font-size: clamp(2.7rem, 15vw, 4.7rem); }
    .hero-grid { gap: 42px; }
    .hero-demo { min-height: 360px; }
    .demo-card { width: 39%; min-height: 84px; padding: 10px; font-size: .86rem; }
    .demo-card.one { left: 5%; }
    .demo-card.two { right: 5%; }
    .demo-card.three { right: 5%; }
    .demo-card.four { left: 5%; }
    .form-grid { grid-template-columns: 1fr; }
    .form-field.full, .consent-row { grid-column: auto; }
    .side-nav { grid-template-columns: 1fr; }
    .side-nav strong { grid-column: auto; }
}

.legal-source-text section { padding: 20px 0; }
.legal-source-text section:first-child { padding-top: 0; }
.legal-source-text p { margin: 0; line-height: 1.72; }
.legal-source-text strong { color: var(--app-fg); }