@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
    --bg: #050505;
    --bg-2: #0a0d10;
    --card: rgba(255,255,255,0.065);
    --card-strong: rgba(255,255,255,0.105);
    --line: rgba(255,255,255,0.13);
    --text: #f5f7fb;
    --muted: #a7b0bd;
    --muted-2: #d0d6dd;
    --primary: #050505;
    --secondary: #00E5FF;
    --blue: #0077B6;
    --cyan-soft: rgba(0,229,255,0.12);
    --danger: #ff6685;
    --shadow: 0 24px 80px rgba(0,0,0,0.38);
    --radius: 24px;
    --radius-sm: 16px;
    --shell: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background:
        radial-gradient(circle at top left, rgba(0,229,255,0.11), transparent 34rem),
        radial-gradient(circle at 85% 12%, rgba(0,119,182,0.22), transparent 26rem),
        var(--bg);
    color: var(--text);
    line-height: 1.65;
    overflow-x: hidden;
}
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image: linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 72%);
    z-index: -1;
}
a { color: inherit; text-decoration: none; }
p { color: var(--muted-2); margin: 0 0 1rem; }
h1, h2, h3 { line-height: 1.05; margin: 0 0 1rem; letter-spacing: -0.045em; }
h1 { font-size: clamp(2.55rem, 8vw, 6.75rem); }
h2 { font-size: clamp(2rem, 4.5vw, 4rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.65rem); }
ul, ol { color: var(--muted-2); padding-left: 1.2rem; }
li + li { margin-top: 0.45rem; }
.shell { width: min(var(--shell), calc(100% - 32px)); margin: 0 auto; }
.narrow { max-width: 840px; }
.skip-link { position: absolute; top: -60px; left: 12px; background: var(--secondary); color: #001014; padding: 10px 14px; border-radius: 10px; z-index: 99; }
.skip-link:focus { top: 12px; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(5,5,5,0.78);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
}
.nav { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 900; letter-spacing: -0.04em; }
.brand span span { color: var(--secondary); }
.brand-mark {
    width: 42px; height: 42px; display: grid; place-items: center;
    border-radius: 14px; background: linear-gradient(135deg, var(--secondary), var(--blue));
    color: #001014; font-size: 0.9rem; box-shadow: 0 0 34px rgba(0,229,255,0.22);
}
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a { color: var(--muted-2); padding: 10px 13px; border-radius: 999px; font-weight: 700; font-size: 0.92rem; transition: 0.22s ease; }
.nav-links a:hover, .nav-links a.active { background: rgba(255,255,255,0.08); color: var(--text); }
.nav-links .nav-cta { background: var(--secondary); color: #001014; box-shadow: 0 0 26px rgba(0,229,255,0.18); }
.nav-links .nav-cta:hover, .nav-links .nav-cta.active { background: #fff; color: #001014; }
.nav-toggle { display: none; background: transparent; border: 1px solid var(--line); border-radius: 14px; padding: 10px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 4px; }

.hero, .page-hero { padding: 84px 0 72px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.58fr); gap: 36px; align-items: center; }
.hero-lead, .page-hero p { font-size: clamp(1.08rem, 2.2vw, 1.35rem); max-width: 780px; color: #dce6ee; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; color: var(--secondary); text-transform: uppercase; letter-spacing: 0.13em; font-size: 0.78rem; font-weight: 900; margin-bottom: 1rem; }
.eyebrow span { width: 34px; height: 2px; background: var(--secondary); box-shadow: 0 0 18px var(--secondary); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 30px 0; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 13px 18px; border-radius: 999px; font-weight: 900; border: 1px solid transparent; transition: 0.22s ease; }
.button.primary { background: var(--secondary); color: #001014; box-shadow: 0 0 42px rgba(0,229,255,0.18); }
.button.primary:hover { transform: translateY(-2px); background: #fff; }
.button.ghost { border-color: var(--line); color: var(--text); background: rgba(255,255,255,0.045); }
.button.ghost:hover { border-color: var(--secondary); color: var(--secondary); transform: translateY(-2px); }
.button.full { width: 100%; }
.text-link { color: var(--secondary); font-weight: 900; text-decoration: underline; text-underline-offset: 5px; }
.trust-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 22px; }
.trust-row div { padding: 16px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: rgba(255,255,255,0.045); }
.trust-row strong { display: block; font-size: 1.2rem; color: var(--text); }
.trust-row span { display: block; color: var(--muted); font-size: 0.86rem; }

.pricing-panel, .card, .tool-card, .contact-card {
    position: relative;
    border: 1px solid var(--line);
    background: linear-gradient(145deg, rgba(255,255,255,0.1), rgba(255,255,255,0.04));
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.pricing-panel { padding: 28px; overflow: hidden; min-height: 430px; }
.panel-glow { position: absolute; width: 220px; height: 220px; right: -70px; top: -70px; border-radius: 50%; background: rgba(0,229,255,0.22); filter: blur(22px); }
.price-meter { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; margin: 26px 0; background: rgba(255,255,255,0.08); border-radius: 999px; padding: 5px; }
.price-meter span { text-align: center; padding: 11px 6px; color: var(--muted-2); font-weight: 800; font-size: 0.78rem; }
.price-meter span:nth-child(2) { background: var(--secondary); color: #001014; border-radius: 999px; }
.signal-list { list-style: none; padding: 0; margin: 0; }
.signal-list li { display: grid; grid-template-columns: 22px 1fr; gap: 10px; align-items: start; margin: 0 0 14px; }
.signal-list svg { color: var(--secondary); width: 20px; }

.section { padding: 82px 0; }
.section-heading { margin-bottom: 28px; }
.split-heading { display: grid; grid-template-columns: 0.95fr 1fr; gap: 28px; align-items: end; }
.centre { text-align: center; max-width: 780px; }
.cards { display: grid; gap: 18px; }
.pricing-cards { grid-template-columns: repeat(3, 1fr); align-items: stretch; }
.card { padding: 24px; }
.card-icon { width: 48px; height: 48px; border-radius: 16px; display: grid; place-items: center; background: var(--cyan-soft); color: var(--secondary); margin-bottom: 18px; }
.price-card .price { font-size: 1.55rem; color: var(--secondary); font-weight: 900; letter-spacing: -0.05em; }
.price-card.featured { border-color: rgba(0,229,255,0.45); transform: translateY(-14px); }
.price-card.featured::before { content: 'Most common growth range'; position: absolute; top: 16px; right: 16px; color: #001014; background: var(--secondary); border-radius: 999px; padding: 7px 10px; font-size: 0.72rem; font-weight: 900; }
.dark-band { background: linear-gradient(90deg, rgba(0,229,255,0.08), rgba(0,119,182,0.08)); border-block: 1px solid var(--line); }
.z-grid { display: grid; grid-template-columns: 0.78fr 1.22fr; gap: 28px; align-items: center; }
.comparison-table { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: rgba(0,0,0,0.22); }
.comparison-table .row { display: grid; grid-template-columns: 1fr 1fr 1.1fr; gap: 12px; padding: 15px 18px; border-bottom: 1px solid var(--line); color: var(--muted-2); }
.comparison-table .row:last-child { border-bottom: 0; }
.comparison-table .head { color: var(--text); background: rgba(255,255,255,0.08); font-weight: 900; }
.factor-grid, .resource-grid { grid-template-columns: repeat(3, 1fr); }
.tool-card { padding: 34px; display: flex; justify-content: space-between; align-items: center; gap: 22px; background: linear-gradient(135deg, rgba(0,229,255,0.16), rgba(255,255,255,0.045)); }
.faq details { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px 20px; background: rgba(255,255,255,0.045); margin: 12px 0; }
.faq summary { cursor: pointer; font-weight: 900; color: var(--text); }
.faq details p { margin-top: 12px; }

.page-hero { min-height: 390px; display: grid; align-items: center; background: radial-gradient(circle at 50% 0, rgba(0,229,255,0.13), transparent 36rem); }
.highlight-card { border-color: rgba(0,229,255,0.35); }
.number-list { counter-reset: item; list-style: none; padding: 0; }
.number-list li { counter-increment: item; position: relative; padding-left: 54px; margin: 20px 0; }
.number-list li::before { content: counter(item); position: absolute; left: 0; top: -2px; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 12px; background: var(--secondary); color: #001014; font-weight: 900; }
.contact-card { display: inline-flex; align-items: center; gap: 14px; padding: 18px 22px; margin-top: 26px; font-size: clamp(1.15rem, 3vw, 2rem); font-weight: 900; color: var(--secondary); }
.contact-card svg { width: 30px; height: 30px; }

.calculator-layout { display: grid; grid-template-columns: 1fr 0.78fr; gap: 22px; align-items: start; }
.calculator label { display: grid; gap: 8px; color: var(--text); font-weight: 800; margin: 0 0 18px; }
select { width: 100%; background: rgba(0,0,0,0.4); color: var(--text); border: 1px solid var(--line); border-radius: 14px; padding: 13px 14px; font: inherit; }
select:focus { outline: 2px solid var(--secondary); outline-offset: 2px; }
.result-panel { position: sticky; top: 104px; }
.result-price { font-size: clamp(2.1rem, 4vw, 3.7rem); font-weight: 900; letter-spacing: -0.06em; color: var(--secondary); margin: 10px 0; }
.result-bars { display: grid; gap: 10px; margin: 22px 0; }
.result-bars div { display: flex; justify-content: space-between; gap: 12px; border: 1px solid var(--line); border-radius: 14px; padding: 12px; }
.result-bars span { color: var(--muted); }
.result-bars strong { color: var(--text); }

.blog-cards { grid-template-columns: repeat(3, 1fr); }
.blog-card h3 a:hover, .blog-list-item h2 a:hover, .article-body a:hover { color: var(--secondary); }
.tag { display: inline-flex; color: #001014; background: var(--secondary); border-radius: 999px; padding: 5px 9px; font-size: 0.74rem; font-weight: 900; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 14px; }
.blog-list { display: grid; gap: 16px; }
.blog-list-item { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center; }
.article-hero { min-height: 460px; }
.article-layout { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 32px; align-items: start; padding-bottom: 80px; }
.article-toc { position: sticky; top: 104px; display: grid; gap: 10px; }
.article-toc h2 { font-size: 1.15rem; margin-bottom: 6px; }
.article-toc a { color: var(--muted-2); font-weight: 800; }
.article-toc a:hover { color: var(--secondary); }
.article-body { font-size: 1.08rem; }
.article-body section { padding: 0 0 38px; border-bottom: 1px solid var(--line); margin-bottom: 38px; }
.article-body h2 { font-size: clamp(1.8rem, 3vw, 2.8rem); }
.article-body a { color: var(--secondary); font-weight: 900; text-decoration: underline; text-underline-offset: 5px; }
.callout { border-left: 4px solid var(--secondary); background: var(--cyan-soft); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 18px; color: var(--muted-2); margin: 22px 0; }

.site-footer { border-top: 1px solid var(--line); background: rgba(0,0,0,0.4); padding: 54px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 0.65fr 0.85fr 1.25fr; gap: 28px; }
.footer-grid h2 { font-size: 1rem; letter-spacing: -0.02em; }
.footer-grid a { display: block; color: var(--muted-2); margin: 9px 0; font-weight: 700; }
.footer-grid a:hover { color: var(--secondary); }
.footer-copy, .footer-disclaimer p { font-size: 0.92rem; color: var(--muted); }
.footer-bottom { display: flex; justify-content: space-between; gap: 12px; border-top: 1px solid var(--line); margin-top: 34px; padding-top: 20px; }
.footer-bottom p { color: var(--muted); font-size: 0.9rem; margin: 0; }

.reveal-on-scroll { opacity: 0; transform: translateY(20px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal-on-scroll.revealed { opacity: 1; transform: translateY(0); }

@media (max-width: 960px) {
    .nav-toggle { display: block; }
    .nav-links { position: absolute; left: 16px; right: 16px; top: 82px; display: none; flex-direction: column; align-items: stretch; background: rgba(5,5,5,0.96); border: 1px solid var(--line); border-radius: 20px; padding: 14px; }
    .nav-links.open { display: flex; }
    .nav-links a { width: 100%; }
    .hero-grid, .split-heading, .z-grid, .calculator-layout, .article-layout { grid-template-columns: 1fr; }
    .pricing-cards, .factor-grid, .blog-cards, .resource-grid, .footer-grid { grid-template-columns: 1fr 1fr; }
    .price-card.featured { transform: none; }
    .result-panel, .article-toc { position: static; }
}

@media (max-width: 640px) {
    .shell { width: min(100% - 24px, var(--shell)); }
    .hero, .page-hero { padding: 58px 0 48px; }
    .section { padding: 58px 0; }
    .trust-row, .pricing-cards, .factor-grid, .blog-cards, .resource-grid, .footer-grid { grid-template-columns: 1fr; }
    .tool-card, .footer-bottom, .blog-list-item { flex-direction: column; display: flex; align-items: flex-start; }
    .comparison-table .row { grid-template-columns: 1fr; }
    .brand { font-size: 0.95rem; }
    .brand-mark { width: 38px; height: 38px; }
    .price-card.featured::before { position: static; display: inline-flex; margin-bottom: 16px; }
    .contact-card { width: 100%; word-break: break-word; }
}