:root {
    --navy: #0f1f33;
    --navy-deep: #0a1624;
    --steel: #1e3353;
    --accent: #d4a017;
    --accent-hover: #b88410;
    --text: #1a202c;
    --muted: #556070;
    --border: #e1e6ed;
    --bg: #f7f8fa;
    --card: #ffffff;
    --danger: #b33a3a;
    --ok: #2f7a3a;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
}
img { max-width: 100%; display: block; }
a { color: var(--steel); }

/* Layout */
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.section { padding: 72px 0; }
.section-alt { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-title {
    font-size: 32px;
    font-weight: 700;
    margin: 0 0 8px;
    color: var(--navy);
    letter-spacing: -0.01em;
    text-align: center;
}
.section-subtitle {
    text-align: center;
    color: var(--muted);
    margin: 0 0 44px;
    font-size: 17px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 4px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
    font-family: inherit;
    letter-spacing: 0.02em;
}
.btn-lg { padding: 14px 28px; font-size: 15px; }
.btn-primary { background: var(--accent); color: var(--navy-deep); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.7); }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; }

/* Nav */
.navbar {
    position: sticky; top: 0; z-index: 50;
    background: var(--navy);
    color: #fff;
    box-shadow: 0 1px 0 rgba(255,255,255,0.05);
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px 24px;
    display: flex;
    align-items: center;
    gap: 24px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; }
.logo-img { height: 40px; width: 40px; border-radius: 50%; }
.nav-title { font-weight: 700; letter-spacing: 0.08em; }
.nav-links { display: flex; gap: 22px; list-style: none; margin: 0 auto 0 12px; padding: 0; }
.nav-links a { color: rgba(255,255,255,0.85); text-decoration: none; font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--accent); }
.nav-cta { white-space: nowrap; }
.hamburger { display: none; background: none; border: 0; cursor: pointer; padding: 6px; }
.hamburger span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; transition: 0.2s; }

/* Hero */
.hero {
    background:
        linear-gradient(180deg, rgba(10,22,36,0.75), rgba(10,22,36,0.9)),
        radial-gradient(circle at 20% 20%, rgba(212,160,23,0.15), transparent 60%),
        radial-gradient(circle at 80% 80%, rgba(30,51,83,0.6), transparent 55%),
        var(--navy-deep);
    color: #fff;
    padding: 80px 24px 96px;
    text-align: center;
}
.hero-inner { max-width: 820px; margin: 0 auto; }
.hero-logo { width: 140px; height: 140px; margin: 0 auto 24px; border-radius: 50%; box-shadow: 0 10px 40px rgba(0,0,0,0.4); }
.hero h1 { font-size: 42px; font-weight: 700; margin: 0 0 16px; letter-spacing: -0.02em; line-height: 1.15; }
.hero-sub { font-size: 18px; line-height: 1.5; color: rgba(255,255,255,0.88); margin: 0 auto 32px; max-width: 680px; }
.hero-sub strong { color: var(--accent); font-weight: 700; }
.hero-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* Problem */
.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}
.problem-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 28px 20px;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}
.problem-figure {
    font-size: 42px;
    font-weight: 800;
    color: var(--navy);
    line-height: 1;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}
.problem-label { color: var(--muted); font-size: 14px; }
.problem-copy { max-width: 760px; margin: 0 auto; font-size: 16px; color: var(--text); }
.problem-copy p { margin: 0 0 14px; }

/* Solution steps */
.solution-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.step {
    background: var(--card);
    border: 1px solid var(--border);
    border-top: 3px solid var(--accent);
    border-radius: 6px;
    padding: 22px;
}
.step-num {
    display: inline-flex; align-items: center; justify-content: center;
    width: 34px; height: 34px;
    background: var(--navy); color: #fff;
    border-radius: 50%;
    font-weight: 700;
    margin-bottom: 12px;
}
.step h3 { margin: 0 0 6px; font-size: 17px; color: var(--navy); }
.step p { margin: 0; color: var(--muted); font-size: 14px; }

/* Features */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.feature-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
    transition: transform 0.15s, box-shadow 0.15s;
}
.feature-card:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.06); }
.feature-icon {
    width: 44px; height: 44px;
    color: var(--steel);
    margin-bottom: 14px;
}
.feature-icon svg { width: 100%; height: 100%; }
.feature-card h3 { margin: 0 0 8px; font-size: 17px; color: var(--navy); }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.5; }

/* Audience */
.audience-layout {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 40px;
    align-items: start;
}
.audience-text p { margin: 0 0 14px; font-size: 16px; }
.audience-badges { list-style: none; padding: 0; margin: 0; }
.audience-badges li {
    padding: 12px 16px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 6px;
    margin-bottom: 8px;
    font-weight: 500;
    display: flex; align-items: center; gap: 10px;
    font-size: 14px;
}
.badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }

/* Builders */
.builders-intro {
    max-width: 760px;
    margin: 0 auto 36px;
    text-align: center;
    font-size: 16px;
    color: var(--text);
}
.builders-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}
.builder-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent);
    border-radius: 6px;
    padding: 24px;
}
.builder-role {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent-hover);
    margin-bottom: 8px;
}
.builder-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 10px;
}
.builder-card p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.55;
}

/* Support */
.support-layout {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 36px;
    align-items: start;
}
.support-info p { margin: 0 0 16px; color: var(--text); }
.support-contact { background: var(--card); border: 1px solid var(--border); border-radius: 6px; padding: 18px; }
.support-contact strong { color: var(--navy); font-size: 13px; letter-spacing: 0.05em; text-transform: uppercase; }
.support-contact a { color: var(--steel); text-decoration: none; }
.support-contact a:hover { text-decoration: underline; }

.support-form {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}
.support-form label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; font-weight: 600; color: var(--navy); }
.support-form label.full { grid-column: 1 / -1; }
.support-form input, .support-form textarea {
    font: inherit;
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
    background: #fff;
    color: var(--text);
}
.support-form input:focus, .support-form textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }
.support-form textarea { resize: vertical; min-height: 120px; font-family: inherit; }
.support-form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; }
.form-foot { grid-column: 1 / -1; display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.form-note { margin: 0; font-size: 13px; color: var(--muted); }
.form-note.ok { color: var(--ok); font-weight: 600; }
.form-note.err { color: var(--danger); font-weight: 600; }

/* Footer */
.footer { background: var(--navy-deep); color: rgba(255,255,255,0.85); padding: 44px 0 20px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer-brand p { margin-top: 12px; font-size: 14px; line-height: 1.5; color: rgba(255,255,255,0.7); }
.footer-logo { width: 60px; height: 60px; border-radius: 50%; }
.footer-links h4, .footer-contact h4 { color: #fff; font-size: 13px; text-transform: uppercase; letter-spacing: 0.1em; margin: 0 0 12px; }
.footer-links ul { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin: 0 0 6px; }
.footer-links a, .footer-contact a { color: rgba(255,255,255,0.8); text-decoration: none; font-size: 14px; }
.footer-links a:hover, .footer-contact a:hover { color: var(--accent); }
.footer-contact p { margin: 0 0 6px; font-size: 14px; }
.footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 13px; color: rgba(255,255,255,0.5); }

/* Responsive */
@media (max-width: 900px) {
    .problem-grid { grid-template-columns: 1fr; }
    .solution-steps { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .audience-layout { grid-template-columns: 1fr; }
    .support-layout { grid-template-columns: 1fr; }
    .support-form { grid-template-columns: 1fr; }
    .builders-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 32px; }
}
@media (max-width: 720px) {
    .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; background: var(--navy); padding: 12px 24px 18px; gap: 12px; border-top: 1px solid rgba(255,255,255,0.1); }
    .nav-links.open { display: flex; }
    .hamburger { display: block; margin-left: auto; }
    .nav-cta { display: none; }
    .nav-container { position: relative; }
}
@media (max-width: 520px) {
    .features-grid { grid-template-columns: 1fr; }
    .solution-steps { grid-template-columns: 1fr; }
    .section { padding: 52px 0; }
    .hero { padding: 56px 20px 72px; }
    .hero h1 { font-size: 28px; }
    .section-title { font-size: 26px; }
}