:root {
  --ink: #10243f;
  --muted: #61728a;
  --line: #dbe7f5;
  --blue: #2f6fed;
  --blue-dark: #1f55c7;
  --mint: #42d9c8;
  --ice: #f5f9ff;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(34, 79, 140, .13);
  --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.6; }
a { color: var(--blue-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

.site-header { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between; min-height: 78px; padding: 0 5vw; background: rgba(255,255,255,.91); border-bottom: 1px solid rgba(219,231,245,.85); backdrop-filter: blur(18px); }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); font-weight: 800; letter-spacing: -.02em; }
.brand:hover { text-decoration: none; }
.brand img { width: 42px; height: 42px; object-fit: contain; }
.site-header nav { display: flex; align-items: center; gap: 28px; }
.site-header nav a { color: var(--ink); font-size: .94rem; font-weight: 650; }
.site-header .nav-cta { padding: 10px 17px; color: var(--white); background: var(--blue); border-radius: 999px; }
.nav-toggle { display: none; border: 1px solid var(--line); border-radius: 10px; background: var(--white); padding: 8px 12px; color: var(--ink); font: inherit; }
.back-link { color: var(--ink); font-weight: 700; }

.hero { overflow: hidden; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; min-height: 720px; padding: 82px 7vw 72px; background: radial-gradient(circle at 78% 25%, rgba(66,217,200,.2), transparent 24%), linear-gradient(145deg, #fbfdff 0%, #edf6ff 100%); }
.hero-copy { max-width: 670px; }
.eyebrow { display: inline-block; color: var(--blue); font-size: .78rem; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
.hero h1 { margin: 18px 0 24px; font-size: clamp(3.25rem, 6.8vw, 6.8rem); line-height: .95; letter-spacing: -.065em; }
.hero h1 span { color: var(--blue); }
.hero-copy > p { max-width: 600px; color: var(--muted); font-size: clamp(1.06rem, 1.45vw, 1.3rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 34px 0 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 22px; border-radius: 14px; font-weight: 800; transition: transform .18s ease, box-shadow .18s ease; }
.button:hover { text-decoration: none; transform: translateY(-2px); }
.button.primary { color: var(--white); background: var(--blue); box-shadow: 0 10px 24px rgba(47,111,237,.24); }
.button.secondary { color: var(--ink); background: var(--white); border: 1px solid var(--line); }
.hero-points { display: flex; flex-wrap: wrap; gap: 12px 24px; padding: 0; margin: 0; list-style: none; color: var(--muted); font-size: .9rem; font-weight: 700; }
.hero-points li::before { content: "✓"; margin-right: 8px; color: #0ba89a; }

.challenge-demo { position: relative; display: grid; place-items: center; min-height: 520px; }
.demo-glow { position: absolute; width: 440px; height: 440px; border-radius: 50%; background: linear-gradient(135deg, rgba(47,111,237,.2), rgba(66,217,200,.3)); filter: blur(35px); }
.phone-card { position: relative; width: min(360px, 80vw); aspect-ratio: 9/16; padding: 28px; color: var(--white); text-align: center; border: 8px solid var(--white); border-radius: 38px; background: radial-gradient(circle at 25% 15%, #235b7c, transparent 32%), linear-gradient(160deg, #071e38, #173e68); box-shadow: var(--shadow); transform: rotate(3deg); }
.phone-card::before { content: ""; position: absolute; inset: 0; opacity: .22; border-radius: 30px; background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px); background-size: 34px 34px; }
.phone-top { position: relative; display: flex; justify-content: center; gap: 5px; }
.phone-top span { width: 18px; height: 4px; border-radius: 10px; background: var(--mint); opacity: .55; }
.demo-label { position: relative; margin: 78px 0 5px; color: var(--mint); font-size: .7rem; font-weight: 900; letter-spacing: .1em; }
.phone-card h2 { position: relative; font-size: 1.55rem; line-height: 1.1; }
.equation { position: relative; display: grid; place-items: center; min-height: 160px; margin: 38px 0 26px; padding: 20px; border: 2px solid var(--mint); border-radius: 20px; background: rgba(7,20,42,.68); font-size: 1.55rem; font-weight: 850; }
.timer { position: relative; display: grid; place-items: center; width: 82px; height: 82px; margin: 0 auto; border: 4px solid var(--mint); border-radius: 50%; font-size: 1.8rem; font-weight: 900; }
.demo-hint { position: relative; margin-top: 23px; color: #c9d9ed; font-size: .85rem; }

.proof-strip { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; padding: 24px 5vw; border-block: 1px solid var(--line); background: var(--white); }
.proof-strip span { padding: 8px 14px; color: #526985; border-radius: 999px; background: var(--ice); font-size: .84rem; font-weight: 750; }
.section { padding: 110px 7vw; }
.section-heading { max-width: 750px; margin: 0 auto 52px; text-align: center; }
.section-heading.compact { max-width: 900px; }
.section-heading h2, .platform-copy h2, .cta-section h2 { margin: 14px 0 16px; font-size: clamp(2.2rem, 4.5vw, 4.4rem); line-height: 1.03; letter-spacing: -.045em; }
.section-heading p, .platform-copy p { color: var(--muted); font-size: 1.08rem; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; max-width: 1200px; margin: auto; }
.steps article, .support-card { padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); box-shadow: 0 14px 40px rgba(45,86,140,.07); }
.steps article > span, .support-card > span { display: grid; place-items: center; width: 46px; height: 46px; margin-bottom: 45px; color: var(--blue); border-radius: 14px; background: #eaf2ff; font-size: .78rem; font-weight: 900; }
.steps h3, .category-card h3, .support-card h2 { margin-bottom: 8px; font-size: 1.35rem; }
.steps p, .category-card p, .support-card p { margin-bottom: 0; color: var(--muted); }
.categories { background: var(--ice); }
.category-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; max-width: 1250px; margin: auto; }
.category-card { min-height: 210px; padding: 25px; border: 1px solid rgba(16,36,63,.07); border-radius: 22px; box-shadow: 0 16px 35px rgba(45,86,140,.06); }
.category-card > span { display: inline-block; margin-bottom: 54px; font-size: .75rem; font-weight: 900; opacity: .6; }
.category-card.mint { background: #dffbf7; }.category-card.blue { background: #e6efff; }.category-card.violet { background: #eee9ff; }.category-card.amber { background: #fff2d7; }.category-card.cyan { background: #def7ff; }.category-card.rose { background: #ffe8ef; }.category-card.green { background: #e6f8e7; }
.platform-section { display: grid; grid-template-columns: .8fr 1.2fr; gap: 8vw; align-items: start; }
.platform-copy { position: sticky; top: 130px; }
.platform-list { display: grid; gap: 14px; }
.platform-list a { display: flex; align-items: center; justify-content: space-between; min-height: 100px; padding: 22px 26px; color: var(--ink); border: 1px solid var(--line); border-radius: 20px; background: var(--white); transition: border-color .18s ease, transform .18s ease; }
.platform-list a:hover { text-decoration: none; border-color: #9bbcf8; transform: translateX(5px); }
.platform-list strong { font-size: 1.25rem; }.platform-list span { color: var(--muted); }
.cta-section { display: flex; align-items: center; justify-content: space-between; gap: 30px; margin: 0 7vw 100px; padding: 55px; color: var(--white); border-radius: 30px; background: linear-gradient(135deg, #173c72, #2f6fed 62%, #3ccfbe); box-shadow: var(--shadow); }
.cta-section .eyebrow { color: #a8fff4; }.cta-section h2 { margin-bottom: 0; }.cta-section .button.primary { color: var(--blue-dark); background: var(--white); }

footer { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 30px; padding: 38px 5vw; color: var(--muted); border-top: 1px solid var(--line); background: var(--ice); font-size: .86rem; }
.footer-brand { display: flex; align-items: center; gap: 11px; }.footer-brand img { width: 40px; height: 40px; object-fit: contain; }.footer-brand strong, .footer-brand span { display: block; }.footer-brand strong { color: var(--ink); }.footer-brand span { font-size: .78rem; }
footer nav { display: flex; flex-wrap: wrap; gap: 18px; } footer nav a { color: var(--ink); font-weight: 700; } footer p { margin: 0; }

.legal-page { min-height: 70vh; padding: 80px 5vw 110px; background: linear-gradient(180deg, var(--ice), #fff 420px); }
.legal-hero { max-width: 880px; margin: 0 auto 35px; }.legal-hero h1 { margin: 12px 0 8px; font-size: clamp(2.8rem, 6vw, 5.7rem); line-height: 1; letter-spacing: -.055em; }.legal-hero p { color: var(--muted); }
.legal-card { max-width: 880px; margin: auto; padding: clamp(28px, 5vw, 62px); border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); box-shadow: var(--shadow); }
.legal-card h2 { margin: 40px 0 12px; font-size: 1.35rem; letter-spacing: -.02em; }.legal-card h2:first-child { margin-top: 0; }.legal-card p { color: #445a73; }
.notice { margin-bottom: 38px; padding: 20px; border: 1px solid #f0b76c; border-radius: 14px; background: #fff8e9; }.notice strong { color: #9b5700; }.notice p { margin: 5px 0 0; }
.support-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; max-width: 1000px; margin: auto; }.support-card.wide { grid-column: 1/-1; }.support-card .button { margin-top: 22px; }.support-card > a:not(.button) { display: inline-block; margin-top: 18px; font-weight: 800; }

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; padding-top: 70px; text-align: center; }.hero-copy { margin: auto; }.hero-copy > p { margin-inline: auto; }.hero-actions, .hero-points { justify-content: center; }.challenge-demo { margin-top: 50px; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }.platform-section { grid-template-columns: 1fr; }.platform-copy { position: static; }.cta-section { align-items: flex-start; flex-direction: column; }
  footer { grid-template-columns: 1fr; text-align: center; }.footer-brand, footer nav { justify-content: center; }
}
@media (max-width: 720px) {
  .site-header { min-height: 68px; padding-inline: 18px; }.brand span { font-size: .9rem; }.brand img { width: 36px; height: 36px; }.nav-toggle { display: block; }.site-header nav { position: absolute; top: 68px; left: 0; right: 0; display: none; align-items: stretch; flex-direction: column; gap: 0; padding: 12px 18px 20px; background: var(--white); border-bottom: 1px solid var(--line); box-shadow: 0 20px 30px rgba(20,50,90,.08); }.site-header nav.open { display: flex; }.site-header nav a { padding: 12px 4px; }.site-header .nav-cta { padding-inline: 15px; text-align: center; }
  .hero { min-height: auto; padding: 60px 20px; }.hero h1 { font-size: clamp(3.2rem, 16vw, 5rem); }.challenge-demo { min-height: 500px; }.phone-card { width: 300px; }
  .section { padding: 78px 20px; }.steps, .support-grid { grid-template-columns: 1fr; }.steps article > span, .support-card > span { margin-bottom: 28px; }.category-grid { grid-template-columns: 1fr; }.category-card { min-height: 175px; }.category-card > span { margin-bottom: 36px; }
  .platform-list a { align-items: flex-start; flex-direction: column; gap: 5px; }.cta-section { margin: 0 20px 70px; padding: 35px 26px; }
  .legal-page { padding: 55px 18px 80px; }.legal-card { padding: 27px 22px; }.support-card.wide { grid-column: auto; }.back-link { font-size: .84rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; } }