:root {
  --ink: #08111f;
  --muted: #5e6a78;
  --line: #dbe1e8;
  --soft: #f3f6f9;
  --cyan: #4ed7ed;
  --blue: #2374ff;
  --night: #07111f;
  --white: #ffffff;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif; font-size: 16px; line-height: 1.55; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; padding: .7rem 1rem; background: white; border-radius: .6rem; box-shadow: 0 5px 30px #0003; }
.skip-link:focus { top: 1rem; }

.site-header { width: min(calc(100% - 40px), var(--max)); height: 80px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #e9edf1; }
.brand { display: inline-flex; align-items: center; gap: .7rem; font-weight: 750; letter-spacing: -.02em; }
.brand-mark { width: 32px; height: 32px; border-radius: 9px; background: var(--night); display: grid; place-items: center; box-shadow: inset 0 0 0 1px #ffffff12; }
.brand-mark span { width: 17px; height: 12px; border: 2px solid var(--cyan); border-radius: 2px; position: relative; }
.brand-mark span::after { content: ""; position: absolute; width: 9px; height: 9px; border-left: 2px solid var(--cyan); border-bottom: 2px solid var(--cyan); left: 2px; top: -4px; transform: rotate(-45deg); }
nav { display: flex; align-items: center; gap: 2rem; font-size: .9rem; font-weight: 650; }
nav a { color: #46515d; }
nav a:hover, nav a:focus-visible { color: var(--blue); }
.nav-cta { background: var(--night); color: white !important; padding: .65rem 1rem; border-radius: 999px; }

.hero { width: min(calc(100% - 40px), var(--max)); min-height: 680px; margin: 0 auto; display: grid; grid-template-columns: .9fr 1.1fr; gap: 4rem; align-items: center; padding: 4.5rem 0 5.5rem; overflow: hidden; }
.hero-copy { position: relative; z-index: 2; }
.eyebrow { margin: 0 0 1.2rem; color: var(--blue); font-size: .75rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.hero .eyebrow { display: flex; align-items: center; gap: .65rem; }
.hero .eyebrow span { width: 7px; height: 7px; background: var(--cyan); border-radius: 50%; box-shadow: 0 0 0 6px #4ed7ed20; }
h1, h2, h3, p { text-wrap: pretty; }
h1 { max-width: 600px; margin: 0; font-size: clamp(3.6rem, 6vw, 6.2rem); line-height: .93; letter-spacing: -.065em; font-weight: 760; }
h1 em { display: block; color: var(--blue); font-style: normal; }
.hero-lede { max-width: 555px; margin: 1.7rem 0 0; color: var(--muted); font-size: 1.15rem; line-height: 1.65; }
.hero-actions { margin-top: 2rem; display: flex; align-items: center; gap: 1.5rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .85rem; min-height: 52px; padding: .85rem 1.2rem; border-radius: 12px; font-weight: 750; transition: transform .2s ease, box-shadow .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: white; background: var(--blue); box-shadow: 0 12px 30px #2374ff30; }
.text-link { font-weight: 750; }
.text-link span { color: var(--blue); margin-left: .3rem; }
.price-note { margin: 1rem 0 0; color: #7b8590; font-size: .84rem; }

.product-preview { min-height: 600px; position: relative; display: grid; place-items: center; background: radial-gradient(circle at 50% 47%, #4ed7ed3b 0, #2374ff16 34%, transparent 66%); }
.phone-shell { width: 344px; height: 600px; overflow: hidden; border: 8px solid #0a1726; border-radius: 44px; background: #f7f9fb; box-shadow: 0 34px 65px #07111f2b, 0 5px 0 #233449; transform: rotate(2deg); }
.phone-shell > img { display: block; width: 100%; height: auto; }
.phone-top { height: 37px; display: flex; align-items: center; justify-content: space-between; padding: 0 8px; font-size: .65rem; font-weight: 700; }
.island { width: 85px; height: 23px; background: var(--night); border-radius: 20px; }
.app-title-row { display: flex; justify-content: space-between; align-items: center; padding: 1.05rem .25rem .8rem; }
.app-title-row div { display: flex; flex-direction: column; }
.app-title-row strong { font-size: 1.55rem; letter-spacing: -.04em; }
.tiny-label { color: #8a95a1; font-size: .58rem; font-weight: 800; letter-spacing: .13em; }
.avatar { width: 35px; height: 35px; display: grid; place-items: center; border-radius: 50%; color: white; background: var(--blue); font-weight: 800; }
.inbox-tabs { display: grid; grid-template-columns: 1fr 1.4fr 1.7fr; gap: 4px; padding: 4px; margin-bottom: .75rem; background: #e8edf2; border-radius: 11px; font-size: .66rem; font-weight: 750; }
.inbox-tabs span { padding: .55rem .3rem; text-align: center; border-radius: 8px; color: #697583; }
.inbox-tabs span.active { background: white; color: var(--ink); box-shadow: 0 2px 8px #07111f12; }
.inbox-tabs b { display: inline-grid; place-items: center; width: 16px; height: 16px; margin-left: 2px; border-radius: 50%; color: white; background: var(--blue); font-size: .55rem; }
.mail-card { display: grid; grid-template-columns: 37px 1fr auto; gap: .7rem; align-items: center; padding: .85rem .55rem; border-bottom: 1px solid #e4e8ed; }
.mail-card.featured { margin-bottom: .25rem; border: 1px solid #b9d5ff; border-radius: 13px; background: white; box-shadow: 0 8px 20px #2474ff12; }
.sender-avatar { width: 37px; height: 37px; display: grid; place-items: center; border-radius: 11px; color: white; font-size: .7rem; font-weight: 800; }
.coral { background: #ff7f73; } .blue { background: #6789d5; } .gold { background: #dcae57; }
.mail-card strong { display: block; font-size: .79rem; }
.mail-card p { margin: 2px 0 0; color: #697583; font-size: .68rem; }
.mail-meta { align-self: start; display: flex; flex-direction: column; align-items: end; color: #8d96a0; font-size: .58rem; }
.mail-meta i { margin-top: .4rem; padding: .15rem .35rem; color: #805f00; background: #ffdf78; border-radius: 5px; font-style: normal; font-weight: 800; }
.quiet-row { display: flex; justify-content: space-between; align-items: center; margin-top: 1rem; padding: .9rem; color: #707a86; background: #ebeff3; border-radius: 11px; font-size: .68rem; }
.quiet-row b { display: grid; place-items: center; width: 24px; height: 24px; color: white; background: #8794a2; border-radius: 50%; }
.float-card { position: absolute; display: flex; align-items: center; gap: .7rem; padding: .8rem 1rem; border: 1px solid #dce4ec; border-radius: 14px; background: #fffffff2; box-shadow: 0 18px 35px #07111f20; backdrop-filter: blur(8px); }
.float-card small, .float-card strong { display: block; }
.float-card small { color: #8a95a1; font-size: .55rem; font-weight: 800; letter-spacing: .12em; }
.float-card strong { font-size: .78rem; }
.float-icon { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; color: #755600; background: #ffda64; }
.float-icon.shield { color: white; background: #8995a2; }
.float-vip { left: 0; top: 22%; transform: rotate(-5deg); }
.float-unknown { right: -2%; bottom: 22%; transform: rotate(4deg); }

.trust-strip { min-height: 74px; padding: 1.2rem; display: flex; align-items: center; justify-content: center; gap: 2.2rem; color: #66717d; background: var(--soft); border-block: 1px solid #e4e9ee; font-size: .84rem; font-weight: 700; letter-spacing: .03em; }
.trust-strip i { width: 3px; height: 3px; background: var(--cyan); border-radius: 50%; }
.section { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; padding: 7rem 0; }
.section-heading { max-width: 720px; margin-bottom: 3rem; }
.section-heading h2, .retention-copy h2, .pricing-copy h2, .download-section h2 { margin: 0; font-size: clamp(2.6rem, 5vw, 4.6rem); line-height: 1; letter-spacing: -.055em; }
.section-heading > p:last-child, .pricing-copy > p:last-child { max-width: 600px; margin: 1.25rem 0 0; color: var(--muted); font-size: 1.06rem; }
.lane-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.lane-card { min-height: 370px; display: flex; flex-direction: column; padding: 1.5rem; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; }
.lane-vip { background: linear-gradient(145deg, #fffbed, #fff); } .lane-approved { background: linear-gradient(145deg, #eef6ff, #fff); } .lane-quarantine { background: linear-gradient(145deg, #f2f4f6, #fff); }
.lane-top { display: flex; align-items: center; justify-content: space-between; }
.number { color: #9ba4ae; font-size: .72rem; font-weight: 800; letter-spacing: .1em; }
.lane-icon { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 13px; color: white; background: var(--ink); font-weight: 800; }
.lane-vip .lane-icon { color: #6c5000; background: #ffda64; }
.lane-approved .lane-icon { background: var(--blue); }
.lane-card h3 { margin: 3.2rem 0 .75rem; font-size: 1.55rem; letter-spacing: -.035em; }
.lane-card > p { margin: 0; color: var(--muted); }
.mini-row { display: grid; grid-template-columns: 34px 1fr auto; align-items: center; gap: .65rem; margin-top: auto; padding: .9rem; border: 1px solid #dfe5eb; border-radius: 12px; background: #ffffffd6; box-shadow: 0 8px 20px #07111f0b; }
.mini-row > span:nth-child(2) { display: flex; flex-direction: column; }
.mini-row b { font-size: .72rem; } .mini-row small, .mini-row i { color: #7c8792; font-size: .62rem; font-style: normal; }
.mini-avatar { width: 34px; height: 34px; display: grid; place-items: center; color: white; background: #537acb; border-radius: 10px; font-size: .65rem; font-weight: 800; }
.decision { display: grid; grid-template-columns: 1.3fr 1fr; gap: .4rem; margin-top: auto; }
.decision button { padding: .8rem .4rem; border: 1px solid #d7dde4; border-radius: 10px; background: white; color: #5c6773; font-size: .68rem; font-weight: 750; }
.decision button:last-child { color: white; background: var(--ink); border-color: var(--ink); }

.retention-section { display: grid; grid-template-columns: 1fr 1fr; min-height: 650px; background: var(--night); color: white; overflow: hidden; }
.retention-visual { position: relative; display: grid; place-items: center; background: radial-gradient(circle at center, #2374ff38 0, transparent 60%); }
.stack-card { position: absolute; width: 280px; height: 340px; border: 1px solid #ffffff20; border-radius: 22px; background: #12243a; }
.stack-back { transform: translate(-50px, 28px) rotate(-10deg); opacity: .45; }
.stack-mid { transform: translate(46px, 20px) rotate(8deg); opacity: .7; }
.stack-front { display: flex; flex-direction: column; justify-content: center; align-items: center; background: linear-gradient(145deg, #1b3451, #0d1c2d); box-shadow: 0 28px 65px #0005; }
.stack-front .tiny-label { color: #7ddbea; }
.stack-front strong { font-size: 7rem; line-height: 1; letter-spacing: -.08em; }
.stack-caption { color: #91a0b1; font-size: .8rem; }
.trimmed-pill { position: absolute; bottom: 16%; z-index: 2; padding: .6rem .9rem; border: 1px solid #68e0ef42; border-radius: 999px; color: #a7f2fb; background: #0a1828e8; font-size: .75rem; font-weight: 700; }
.retention-copy { max-width: 560px; padding: 8rem 3rem 8rem 5rem; align-self: center; }
.retention-copy .eyebrow { color: var(--cyan); }
.retention-copy > p:nth-of-type(2) { max-width: 520px; color: #aab5c2; font-size: 1.07rem; }
.retention-copy ul, .price-card ul { list-style: none; margin: 2rem 0 0; padding: 0; }
.retention-copy li { display: flex; gap: .7rem; padding: .6rem 0; color: #d6dde5; }
.retention-copy li span { color: var(--cyan); }

.compact { margin-bottom: 2rem; }
.principles-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.principles-grid article { padding: 2rem 2rem 1rem 0; }
.principles-grid article + article { padding-left: 2rem; border-left: 1px solid var(--line); }
.principles-grid span { color: var(--blue); font-size: .7rem; font-weight: 800; letter-spacing: .12em; }
.principles-grid h3 { margin: 1.7rem 0 .6rem; font-size: 1.25rem; }
.principles-grid p { margin: 0; color: var(--muted); }

.pricing-section { display: grid; grid-template-columns: 1fr 430px; gap: 6rem; align-items: center; padding-top: 3rem; }
.pricing-copy > p:last-child { max-width: 470px; }
.price-card { padding: 2rem; border: 1px solid #cdd8e4; border-radius: 24px; background: linear-gradient(150deg, white, #f4f8fb); box-shadow: 0 24px 60px #07111f14; }
.price-card > p { margin: 0 0 .8rem; font-weight: 800; }
.price { display: flex; align-items: flex-start; padding-bottom: 1.5rem; border-bottom: 1px solid var(--line); }
.price > span { margin-top: .6rem; font-size: 1.4rem; font-weight: 800; }
.price strong { font-size: 4.5rem; line-height: 1; letter-spacing: -.06em; }
.price small { align-self: end; margin: 0 0 .65rem .5rem; color: var(--muted); }
.price-card li { position: relative; padding: .48rem 0 .48rem 1.5rem; }
.price-card li::before { content: "✓"; position: absolute; left: 0; color: var(--blue); font-weight: 800; }
.wide { width: 100%; margin-top: 1.5rem; font-size: .9rem; }
.price-card > small { display: block; margin-top: .8rem; color: #7d8792; text-align: center; }

.download-section { position: relative; min-height: 570px; padding: 7rem 20px 6rem; display: flex; flex-direction: column; align-items: center; justify-content: center; overflow: hidden; color: white; background: var(--night); text-align: center; }
.download-section::before { content: ""; position: absolute; width: 600px; height: 600px; border: 1px solid #53daf038; border-radius: 50%; }
.download-section::after { content: ""; position: absolute; width: 820px; height: 820px; border: 1px solid #53daf019; border-radius: 50%; }
.download-glow { position: absolute; inset: 0; background: radial-gradient(circle at center, #2374ff45 0, transparent 55%); }
.download-section > *:not(.download-glow) { position: relative; z-index: 2; }
.eyebrow.light { color: var(--cyan); }
.download-section > p:not(.eyebrow) { color: #aab5c2; font-size: 1.05rem; }
.app-store-badge { display: inline-flex; align-items: center; gap: .8rem; margin-top: 1rem; padding: .65rem 1.2rem; border: 1px solid #ffffff50; border-radius: 12px; background: #05090f; text-align: left; }
.app-store-badge:hover { border-color: var(--cyan); }
.apple { width: 34px; height: 34px; display: grid; place-items: center; color: white; font-size: 1.7rem; }
.app-store-badge small, .app-store-badge strong { display: block; line-height: 1.1; }
.app-store-badge small { font-size: .62rem; } .app-store-badge strong { font-size: 1.25rem; }
.domain { margin-top: 1.6rem; color: #718094; font-size: .75rem; font-weight: 700; letter-spacing: .1em; }

footer { width: min(calc(100% - 40px), var(--max)); min-height: 120px; margin: 0 auto; display: grid; grid-template-columns: 1.2fr 1fr 1fr auto; align-items: center; gap: 2rem; color: #737e8a; font-size: .8rem; }
.footer-brand { color: var(--ink); }
footer > div { display: flex; gap: 1.2rem; }
footer a:hover { color: var(--blue); }

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; padding-top: 5rem; text-align: center; }
  .hero-copy { display: flex; flex-direction: column; align-items: center; }
  .product-preview { min-height: 560px; }
  .lane-grid { grid-template-columns: 1fr; }
  .lane-card { min-height: 300px; }
  .lane-card h3 { margin-top: 2rem; }
  .retention-section { grid-template-columns: 1fr; }
  .retention-visual { min-height: 540px; }
  .retention-copy { padding: 6rem max(2rem, 8vw); }
  .pricing-section { grid-template-columns: 1fr; gap: 3rem; }
  .price-card { width: 100%; max-width: 520px; }
  footer { grid-template-columns: 1fr 1fr; padding: 2rem 0; }
}

@media (max-width: 640px) {
  .site-header { height: 68px; }
  nav a:not(.nav-cta) { display: none; }
  .hero { width: min(calc(100% - 28px), var(--max)); gap: 1rem; padding: 4rem 0 3rem; }
  h1 { font-size: clamp(3.1rem, 16vw, 4.5rem); }
  .hero-lede { font-size: 1rem; }
  .hero-actions { flex-direction: column; gap: 1rem; }
  .product-preview { min-height: 490px; transform: scale(.85); margin-inline: -12%; }
  .phone-shell { width: 334px; height: 570px; }
  .float-vip { left: 2%; top: 14%; }
  .float-unknown { right: 1%; bottom: 10%; }
  .trust-strip { gap: .7rem; flex-wrap: wrap; font-size: .72rem; }
  .section { width: min(calc(100% - 32px), var(--max)); padding: 5rem 0; }
  .section-heading h2, .retention-copy h2, .pricing-copy h2, .download-section h2 { font-size: clamp(2.55rem, 13vw, 3.7rem); }
  .principles-grid { grid-template-columns: 1fr; }
  .principles-grid article + article { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .retention-visual { min-height: 470px; }
  .stack-card { width: 230px; height: 290px; }
  .stack-front strong { font-size: 6rem; }
  .retention-copy { padding: 5rem 1.5rem; }
  .price strong { font-size: 4rem; }
  .download-section { min-height: 540px; }
  footer { grid-template-columns: 1fr; gap: .8rem; padding: 2.5rem 0; text-align: center; justify-items: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}