:root {
    --bg: #0b1020;
    --bg-soft: #121933;
    --panel: rgba(17, 24, 39, 0.78);
    --panel-strong: #121a2f;
    --text: #f8fafc;
    --muted: #b6c2d9;
    --line: rgba(255,255,255,0.1);
    --accent: #7c3aed;
    --accent-2: #06b6d4;
    --success: #10b981;
    --shadow: 0 20px 60px rgba(0,0,0,0.35);
    --radius: 24px;
    --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(124,58,237,0.28), transparent 32%),
        radial-gradient(circle at right center, rgba(6,182,212,0.18), transparent 28%),
        linear-gradient(180deg, #0a0f1f 0%, #0b1020 100%);
}
a { color: inherit; text-decoration: none; }
.container { width: min(var(--container), calc(100% - 32px)); margin: 0 auto; }

.site-header {
    position: sticky; top: 0; z-index: 30;
    backdrop-filter: blur(14px);
    background: rgba(8, 12, 24, 0.72);
    border-bottom: 1px solid var(--line);
}
.header-inner, .footer-inner {
    display: flex; align-items: center; justify-content: space-between; gap: 24px;
    min-height: 78px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: -0.02em; }
.brand-mark { width: 42px; height: 42px; display: inline-flex; }
.brand-mark svg { width: 100%; height: 100%; }
.brand-text { font-size: 1.15rem; }
.main-nav { display: flex; gap: 22px; align-items: center; }
.main-nav a { color: var(--muted); font-weight: 500; }
.main-nav a:hover { color: var(--text); }
.menu-toggle { display: none; background: transparent; border: 0; padding: 0; }
.menu-toggle span { display: block; width: 26px; height: 2px; background: #fff; margin: 5px 0; border-radius: 999px; }

.hero-section, .benefits-section, .audience-section, .form-section, .simple-section { padding: 72px 0; }
.hero-grid, .form-grid {
    display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center;
}
.eyebrow {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 8px 14px; border: 1px solid rgba(124,58,237,0.28);
    background: rgba(124,58,237,0.12); color: #d9ccff; border-radius: 999px;
    font-size: 0.9rem; font-weight: 700; margin-bottom: 18px;
}
h1, h2, h3 { margin: 0 0 16px; letter-spacing: -0.03em; }
h1 { font-size: clamp(2.2rem, 5vw, 4.35rem); line-height: 1.04; }
h2 { font-size: clamp(1.7rem, 4vw, 2.7rem); line-height: 1.1; }
h3 { font-size: 1.2rem; }
p { color: var(--muted); line-height: 1.75; margin: 0 0 14px; }
.hero-text { font-size: 1.05rem; max-width: 760px; }
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.hero-note { margin-top: 18px; color: #d2dcf0; font-weight: 600; }

.btn {
    display: inline-flex; align-items: center; justify-content: center;
    min-height: 50px; padding: 0 22px; border-radius: 14px;
    font-weight: 700; transition: .2s ease; border: 1px solid transparent; cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    box-shadow: 0 16px 32px rgba(124,58,237,0.28);
}
.btn-secondary {
    color: var(--text); border-color: var(--line); background: rgba(255,255,255,0.03);
}
.btn-block { width: 100%; }

.hero-visual { position: relative; min-height: 430px; }
.visual-card {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(19,27,51,0.92), rgba(11,16,32,0.92));
    box-shadow: var(--shadow);
}
.visual-main { padding: 24px; min-height: 380px; position: relative; overflow: hidden; }
.visual-main::after {
    content: ""; position: absolute; inset: auto -60px -80px auto; width: 220px; height: 220px;
    background: radial-gradient(circle, rgba(124,58,237,0.35), transparent 68%);
}
.screen-header { display: flex; gap: 8px; margin-bottom: 24px; }
.screen-header span { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,0.28); }
.code-lines { display: grid; gap: 14px; margin-bottom: 30px; }
.code-line { height: 14px; border-radius: 999px; background: linear-gradient(90deg, rgba(124,58,237,0.7), rgba(6,182,212,0.35)); }
.code-line.short { width: 48%; }
.code-line.medium { width: 72%; }
.tech-tags { display: flex; flex-wrap: wrap; gap: 12px; }
.tech-tags span {
    display: inline-flex; padding: 10px 14px; border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.1); background: rgba(255,255,255,0.05); font-weight: 600;
}
.visual-float {
    position: absolute; padding: 16px 18px; font-weight: 700; background: rgba(10,16,31,0.92);
}
.float-top { top: -12px; right: -8px; }
.float-bottom { left: -10px; bottom: 18px; }

.section-head { max-width: 800px; margin-bottom: 26px; }
.benefits-grid {
    display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px;
}
.info-card, .form-card, .audience-box, .simple-box {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(12, 18, 36, 0.84);
    box-shadow: var(--shadow);
}
.info-card { padding: 26px; }
.audience-box {
    padding: 32px; display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.form-card { padding: 28px; }
.form-copy { max-width: 640px; }
.feature-list { margin: 24px 0 0; padding-left: 18px; color: var(--muted); }
.feature-list li { margin-bottom: 12px; }

.form-group { margin-bottom: 18px; }
label { display: block; margin-bottom: 8px; font-weight: 600; }
.input {
    width: 100%; min-height: 52px; border-radius: 14px; border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.03); color: #fff; padding: 14px 16px; outline: none;
}
.input:focus { border-color: rgba(6,182,212,0.8); box-shadow: 0 0 0 4px rgba(6,182,212,0.12); }
.textarea { min-height: 130px; resize: vertical; }
.field-validation, .validation-summary { color: #fca5a5; font-size: 0.92rem; }
.validation-summary ul { margin: 0 0 16px; padding-left: 18px; }
.success-box {
    border: 1px solid rgba(16,185,129,0.3); background: rgba(16,185,129,0.08);
    border-radius: 18px; padding: 22px;
}

.site-footer { border-top: 1px solid var(--line); background: rgba(8,12,24,0.84); }
.site-footer p { max-width: 520px; }
.footer-brand { font-weight: 800; margin-bottom: 8px; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; color: var(--muted); }

@media (max-width: 980px) {
    .hero-grid, .form-grid, .benefits-grid { grid-template-columns: 1fr; }
    .audience-box { flex-direction: column; align-items: flex-start; }
    .hero-visual { min-height: 360px; }
}

@media (max-width: 760px) {
    .menu-toggle { display: block; }
    .main-nav {
        display: none; position: absolute; top: 78px; left: 16px; right: 16px;
        flex-direction: column; align-items: stretch; padding: 14px;
        border-radius: 18px; background: rgba(8,12,24,0.96); border: 1px solid var(--line);
    }
    .main-nav.is-open { display: flex; }
    h1 { font-size: 2.3rem; }
    .hero-section, .benefits-section, .audience-section, .form-section, .simple-section { padding: 52px 0; }
}