:root {
  --bg: #07101d;
  --bg-soft: #0b1627;
  --surface: #ffffff;
  --surface-soft: #f4f7fb;
  --ink: #122033;
  --muted: #5c6b7d;
  --line: #dbe4ef;
  --accent: #1677ff;
  --accent-deep: #0f5fd0;
  --accent-soft: #e9f2ff;
  --cyan: #4ad7d1;
  --warning: #fff7e8;
  --warning-line: #f4ca73;
  --radius: 22px;
  --shadow: 0 18px 50px rgba(14, 34, 62, .09);
  --shell: 1140px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--surface);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }
img { max-width: 100%; }
.shell { width: min(var(--shell), calc(100% - 40px)); margin: 0 auto; }
.narrow { width: min(820px, calc(100% - 40px)); }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 9999; padding: 10px 14px; background: #fff; border-radius: 10px; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: sticky; top: 0; z-index: 50; background: rgba(7,16,29,.94); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(255,255,255,.09); }
.nav-wrap { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: #fff; text-decoration: none; font-weight: 800; letter-spacing: -.02em; white-space: nowrap; }
.brand-disc { width: 28px; height: 28px; border-radius: 50%; border: 7px solid #5aa4ff; position: relative; box-shadow: inset 0 0 0 2px rgba(255,255,255,.3); }
.brand-disc::after { content: ""; position: absolute; width: 5px; height: 5px; background: #fff; border-radius: 50%; inset: 50% auto auto 50%; transform: translate(-50%,-50%); }
.nav { display: flex; gap: 22px; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a { color: #dbe8f8; text-decoration: none; font-size: .92rem; white-space: nowrap; }
.nav a:hover, .nav a:focus-visible { color: #fff; }

.hero { background: radial-gradient(circle at 82% 18%, rgba(63,154,255,.22), transparent 28%), radial-gradient(circle at 70% 70%, rgba(74,215,209,.12), transparent 25%), linear-gradient(135deg, #07101d 0%, #0c1d36 100%); color: #fff; padding: 88px 0 76px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(290px, .7fr); gap: 52px; align-items: center; }
.eyebrow { margin: 0 0 12px; font-size: .77rem; font-weight: 850; text-transform: uppercase; letter-spacing: .12em; color: #0f65dd; }
.hero .eyebrow { color: #7adfd9; }
h1 { margin: 0; font-size: clamp(2.4rem, 5.2vw, 4.7rem); line-height: 1.03; letter-spacing: -.052em; max-width: 900px; }
.hero-copy { margin: 26px 0 0; max-width: 820px; color: #d8e4f2; font-size: clamp(1.02rem, 1.6vw, 1.2rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 18px; border-radius: 12px; text-decoration: none; font-weight: 800; transition: transform .15s ease, background .15s ease; }
.button:hover { transform: translateY(-1px); }
.button.primary { color: #fff; background: var(--accent); box-shadow: 0 8px 22px rgba(22,119,255,.28); }
.button.primary:hover { background: var(--accent-deep); }
.button.secondary { color: #eaf3ff; border: 1px solid rgba(255,255,255,.25); background: rgba(255,255,255,.06); }
.trust-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.trust-row span { color: #dfeafa; border: 1px solid rgba(255,255,255,.13); border-radius: 999px; padding: 7px 11px; font-size: .84rem; background: rgba(255,255,255,.045); }
.hero-card { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius); padding: 28px; box-shadow: 0 26px 70px rgba(0,0,0,.2); }
.hero-card strong { display: block; font-size: 1.05rem; margin-bottom: 5px; }
.hero-card p { color: #dce7f5; margin: 0; }
.mini-label { display: inline-block; color: #8ce6e0; font-size: .75rem; text-transform: uppercase; letter-spacing: .11em; font-weight: 900; margin-bottom: 18px; }
.mini-divider { height: 1px; background: rgba(255,255,255,.13); margin: 20px 0; }

.section { padding: 82px 0; }
.section.tone { background: var(--surface-soft); }
.section-heading { max-width: 760px; margin: 0 auto 34px; text-align: center; }
.section-heading.left { margin-left: 0; text-align: left; }
.section-heading h2, .info-panel h2, .warning-card h2 { margin: 0; font-size: clamp(1.85rem, 3vw, 2.75rem); line-height: 1.12; letter-spacing: -.035em; }
.section-heading p:last-child { color: var(--muted); margin: 14px 0 0; }

.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.scenario-card { position: relative; padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: #fff; box-shadow: 0 8px 26px rgba(18,32,51,.04); }
.number { display: inline-block; margin-bottom: 18px; font-weight: 900; color: var(--accent); font-size: .78rem; letter-spacing: .1em; }
.scenario-card h3, .choice-card h3, .definition-grid h3, .product-card h3 { margin: 0 0 10px; line-height: 1.24; letter-spacing: -.02em; }
.scenario-card p, .choice-card p, .definition-grid p { margin: 0; color: var(--muted); }

.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.info-panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); }
.info-panel p { color: var(--muted); }
.source-link { display: inline-flex; margin-top: 8px; color: var(--accent-deep); font-weight: 800; text-underline-offset: 3px; }

.two-card-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.choice-card { border: 1px solid var(--line); background: #fff; border-radius: var(--radius); padding: 28px; }
.choice-card.featured { border-color: #b8d7ff; box-shadow: 0 15px 40px rgba(22,119,255,.09); }
ul { padding-left: 20px; }
.choice-card li, .check-list li { margin: 8px 0; }

.definition-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.definition-grid article { padding: 26px; border-radius: 18px; border: 1px solid var(--line); background: #fff; }

.warning-section { padding-top: 72px; padding-bottom: 72px; }
.warning-card { background: var(--warning); border: 1px solid var(--warning-line); border-radius: var(--radius); padding: 32px; }
.warning-card p { color: #644f27; }
.warning-card .eyebrow { color: #9d6700; }

.question-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.question-list li { display: grid; grid-template-columns: minmax(260px, .9fr) 1.35fr; gap: 26px; align-items: start; background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; }
.question-list strong { line-height: 1.35; }
.question-list span { color: var(--muted); }

.product-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.product-card { border: 1px solid var(--line); background: #fff; border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); }
.product-card h3 { font-size: 1.55rem; margin-top: 18px; }
.product-topline { display: flex; flex-wrap: wrap; gap: 8px; }
.badge { padding: 6px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-deep); font-size: .78rem; font-weight: 850; }
.badge.muted { background: #eef2f6; color: #4f6074; }
.product-summary { color: var(--muted); }
.check-list { margin: 20px 0 0; padding-left: 20px; }
.check-list li { color: #2d3c4f; }
.product-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; margin-top: 24px; }
.text-button { font-weight: 800; color: var(--accent-deep); text-underline-offset: 3px; }

.table-wrap { margin-top: 30px; overflow-x: auto; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
table { width: 100%; min-width: 820px; border-collapse: collapse; }
th, td { padding: 16px 18px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
th { background: #f5f8fc; font-size: .88rem; color: #405168; }
tr:last-child td { border-bottom: 0; }

.decision-strip { margin-top: 22px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.decision-strip div { border-radius: 16px; background: #f5f8fc; border: 1px solid var(--line); padding: 18px 20px; }
.decision-strip strong { display: block; margin-bottom: 5px; }
.decision-strip span { color: var(--muted); }
.deep-cta { margin-top: 24px; display: flex; gap: 28px; align-items: center; justify-content: space-between; background: var(--bg-soft); color: #fff; border-radius: var(--radius); padding: 28px; }
.deep-cta h3 { margin: 0 0 8px; font-size: 1.55rem; letter-spacing: -.025em; }
.deep-cta p { color: #c9d8e9; margin-bottom: 0; }
.deep-cta .eyebrow { color: #72ddd7; margin-bottom: 8px; }
.deep-cta .button { flex: 0 0 auto; }

.faq-list { display: grid; gap: 10px; }
details { border: 1px solid var(--line); background: #fff; border-radius: 14px; padding: 0 18px; }
summary { cursor: pointer; font-weight: 800; padding: 18px 30px 18px 0; position: relative; line-height: 1.35; }
summary::after { content: "+"; position: absolute; right: 2px; top: 15px; font-size: 1.35rem; color: var(--accent); }
details[open] summary::after { content: "–"; }
details p { margin: 0 0 18px; color: var(--muted); max-width: 900px; }

.source-note { padding-top: 36px; padding-bottom: 36px; border-top: 1px solid var(--line); }
.source-note p { margin: 0; color: var(--muted); font-size: .94rem; }
.site-footer { background: var(--bg); color: #e8f0fa; padding: 34px 0; }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: start; }
.site-footer p { color: #aebdd0; margin: 5px 0 0; }
.footer-meta { display: flex; flex-direction: column; gap: 4px; color: #aebdd0; font-size: .82rem; text-align: right; }
.affiliate-note { color: #91a3b9; }

a:focus-visible, button:focus-visible, summary:focus-visible, [tabindex]:focus-visible { outline: 3px solid #6db6ff; outline-offset: 3px; }

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero-card { max-width: 680px; }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: 1fr; }
  .question-list li { grid-template-columns: 1fr; gap: 8px; }
}

@media (max-width: 760px) {
  .shell, .narrow { width: min(100% - 28px, var(--shell)); }
  .nav-wrap { min-height: 64px; align-items: center; }
  .brand span:last-child { display: none; }
  .nav { gap: 16px; }
  .hero { padding: 66px 0 58px; }
  h1 { font-size: clamp(2.3rem, 12vw, 3.8rem); }
  .section { padding: 64px 0; }
  .scenario-grid, .split-grid, .two-card-grid, .definition-grid, .decision-strip, .footer-grid { grid-template-columns: 1fr; }
  .deep-cta { flex-direction: column; align-items: flex-start; }
  .deep-cta .button { width: 100%; }
  .footer-meta { text-align: left; }
  .product-actions .button { width: 100%; }
}

@media (max-width: 430px) {
  .hero-actions { flex-direction: column; }
  .hero-actions .button { width: 100%; }
  .hero-card, .product-card, .info-panel, .choice-card { padding: 22px; }
  .warning-card { padding: 24px; }
  .section-heading h2, .info-panel h2, .warning-card h2 { font-size: 1.9rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}