:root {
    --bg: #0b0f17;
    --bg2: #111827;
    --card: #151d2e;
    --line: #223049;
    --text: #e6ebf5;
    --muted: #93a1b8;
    --accent: #4f8cff;
    --accent2: #2ec5a0;
    --danger: #ff5d6c;
    --radius: 14px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* ---------- header ---------- */
header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(11, 15, 23, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
}
nav {
    display: flex; align-items: center; justify-content: space-between;
    height: 64px;
}
.logo {
    font-weight: 800; font-size: 20px; letter-spacing: -0.3px;
    display: flex; align-items: center; gap: 10px;
}
.logo svg { width: 28px; height: 28px; }
.logo span { color: var(--accent); }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 15px; transition: color .15s; }
.nav-links a:hover { color: var(--text); }
.nav-links a.btn-primary, .nav-links a.btn-primary:hover, .nav-links a.btn-primary:visited { color: #fff; }

/* ---------- buttons ---------- */
.btn {
    display: inline-block; padding: 10px 22px; border-radius: 10px;
    text-decoration: none; font-weight: 600; font-size: 15px;
    transition: all .15s; cursor: pointer; border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #3d7bf0; }
.btn-ghost { border-color: var(--line); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 14px 30px; font-size: 17px; }

/* ---------- hero ---------- */
.hero { padding: 96px 0 72px; text-align: center; }
.hero .badge {
    display: inline-block; padding: 6px 14px; border-radius: 999px;
    background: rgba(79, 140, 255, 0.12); color: var(--accent);
    font-size: 13px; font-weight: 600; margin-bottom: 24px;
    border: 1px solid rgba(79, 140, 255, 0.3);
}
.hero h1 { font-size: 46px; line-height: 1.15; letter-spacing: -1px; margin-bottom: 20px; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p.sub { color: var(--muted); font-size: 19px; max-width: 640px; margin: 0 auto 34px; }
.hero .cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero .meta { margin-top: 28px; color: var(--muted); font-size: 14px; }
.hero .meta span { color: var(--accent2); font-weight: 600; }

/* ---------- sections ---------- */
section { padding: 72px 0; }
section h2 { font-size: 32px; letter-spacing: -0.6px; margin-bottom: 12px; }
section .sec-sub { color: var(--muted); font-size: 17px; margin-bottom: 44px; max-width: 640px; }

/* ---------- widget cards ---------- */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
    background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 26px; transition: transform .15s, border-color .15s;
}
.card:hover { transform: translateY(-3px); border-color: rgba(79, 140, 255, 0.5); }
.card .icon {
    width: 44px; height: 44px; border-radius: 11px; margin-bottom: 16px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(79, 140, 255, 0.14); color: var(--accent);
}
.card .icon svg { width: 22px; height: 22px; }
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14.5px; }

/* ---------- pricing ---------- */
.pricing { text-align: center; }
.price-box {
    background: linear-gradient(135deg, rgba(79, 140, 255, 0.12), rgba(46, 197, 160, 0.08));
    border: 1px solid rgba(79, 140, 255, 0.35);
    border-radius: var(--radius); padding: 44px 32px; max-width: 560px; margin: 0 auto;
}
.price-box .amount { font-size: 52px; font-weight: 800; letter-spacing: -1px; }
.price-box .amount small { font-size: 20px; color: var(--muted); font-weight: 600; }
.price-box .per { color: var(--muted); margin: 8px 0 24px; }
.price-box ul { list-style: none; margin-bottom: 28px; }
.price-box li { padding: 7px 0; color: var(--muted); font-size: 15px; }
.price-box li::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--accent2); margin-right: 10px; }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: step; }
.step {
    background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px;
    position: relative;
}
.step .num {
    width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: #fff;
    display: flex; align-items: center; justify-content: center; font-weight: 700; margin-bottom: 14px;
}
.step h3 { font-size: 16px; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 14.5px; }

/* ---------- faq ---------- */
.faq { max-width: 760px; margin: 0 auto; }
.faq details {
    background: var(--card); border: 1px solid var(--line); border-radius: 12px;
    padding: 18px 22px; margin-bottom: 12px;
}
.faq summary { cursor: pointer; font-weight: 600; font-size: 16px; }
.faq p { color: var(--muted); margin-top: 12px; font-size: 15px; }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--line); padding: 40px 0; color: var(--muted); font-size: 14px; }
footer .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
footer a { color: var(--accent); text-decoration: none; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
    .grid, .steps { grid-template-columns: 1fr; }
    .hero h1 { font-size: 34px; }
    .nav-links { display: none; }
    section { padding: 48px 0; }
}