:root {
  color-scheme: dark;
  --bg: #0b0b0d;
  --bg-2: #111215;
  --surface: #16171b;
  --surface-2: #1d1f24;
  --line: #26282e;
  --line-2: #33363d;
  --text: #f5f5f6;
  --muted: #a3a6ae;
  --dim: #7c7f88;
  --red: #ff4646;
  --red-2: #ff6b5b;
  --red-soft: rgba(255, 70, 70, .13);
  --gold: #f2b84f;
  --green: #3ddc97;
  --blue: #55b6ff;
  --radius: 22px;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.6; overflow-x: hidden; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
img { display: block; max-width: 100%; height: auto; }
.wrap { width: 100%; max-width: 74rem; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 28px; } }

/* ---------- Top bar ---------- */
.top { position: sticky; top: 0; z-index: 20; background: rgba(11, 11, 13, .78); backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px); border-bottom: 1px solid rgba(255, 255, 255, .06); }
.top .wrap { display: flex; align-items: center; gap: 18px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; font-size: 1.28rem; letter-spacing: -.04em; }
.brand img { width: 34px; height: 34px; border-radius: 9px; }
.top nav { display: flex; gap: 26px; margin-left: auto; font-size: .93rem; }
.top nav a { color: var(--muted); text-decoration: none; transition: color .2s; }
.top nav a:hover { color: var(--text); }
.lang { margin-left: 8px; display: inline-flex; border: 1px solid var(--line-2); border-radius: 999px; overflow: hidden; font-size: .78rem; font-weight: 700; letter-spacing: .06em; }
.lang a, .lang span { padding: 6px 11px; text-decoration: none; }
.lang span { background: var(--text); color: #0b0b0d; }
.lang a { color: var(--muted); }
.lang a:hover { color: var(--text); }
@media (max-width: 820px) { .top nav { display: none; } .lang { margin-left: auto; } }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 14px 24px; border-radius: 999px; font-weight: 700; font-size: 1rem; text-decoration: none; border: 1px solid transparent; transition: transform .15s, filter .2s, border-color .2s; }
.btn:hover { transform: translateY(-1px); }
.btn-ghost { border-color: var(--line-2); background: rgba(255, 255, 255, .03); }
.btn-ghost:hover { border-color: #4a4d55; }
.store { display: inline-flex; align-items: center; gap: 12px; padding: 10px 20px 10px 14px; border-radius: 14px; background: #000; border: 1px solid #3a3d44; color: #fff; text-decoration: none; }
.store svg { width: 28px; height: 28px; flex: none; }
.store small { display: block; font-size: .66rem; text-transform: uppercase; letter-spacing: .06em; color: #c8cad0; line-height: 1.2; }
.store b { display: block; font-size: 1.15rem; font-weight: 600; line-height: 1.2; }

/* ---------- Type helpers ---------- */
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: .76rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--red); }
.eyebrow::before { content: ""; width: 18px; height: 2px; background: currentColor; border-radius: 2px; }
.kicker { color: var(--muted); font-size: 1.1rem; }
h1, h2, h3 { letter-spacing: -.035em; line-height: 1.05; margin: 0; }
.grad { background: linear-gradient(92deg, #fff 10%, #ffb3a8 55%, var(--red) 95%); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 72px 0 56px; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background:
  radial-gradient(40rem 26rem at 78% 18%, rgba(255, 70, 70, .26), transparent 65%),
  radial-gradient(30rem 20rem at 8% 90%, rgba(255, 70, 70, .08), transparent 70%); pointer-events: none; }
.hero::after { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px); background-size: 56px 56px; mask-image: radial-gradient(ellipse at 70% 30%, #000 10%, transparent 70%); -webkit-mask-image: radial-gradient(ellipse at 70% 30%, #000 10%, transparent 70%); pointer-events: none; }
.hero .wrap { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(2.8rem, 6.4vw, 4.9rem); font-weight: 850; margin: 18px 0 22px; }
.hero .lead { font-size: clamp(1.08rem, 2.2vw, 1.25rem); color: #c9cbd1; max-width: 33rem; margin: 0 0 30px; }
.hero .lead strong { color: var(--text); }
.cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.note { margin-top: 16px; font-size: .87rem; color: var(--dim); display: flex; align-items: center; gap: 8px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(61, 220, 151, .15); flex: none; }

.stack { position: relative; height: 640px; }
.stack .phone { position: absolute; width: 270px; }
.stack .p1 { left: 50%; top: 0; transform: translateX(-50%); z-index: 3; }
.stack .p2 { left: 4%; top: 70px; transform: rotate(-8deg); z-index: 2; opacity: .9; }
.stack .p3 { right: 4%; top: 70px; transform: rotate(8deg); z-index: 1; opacity: .9; }
@media (max-width: 960px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 28px; }
  .stack { height: 560px; max-width: 30rem; width: 100%; margin: 0 auto; }
  .stack .phone { width: 236px; }
}
@media (max-width: 520px) {
  .stack { height: 470px; }
  .stack .phone { width: 200px; }
  .stack .p2 { left: -4%; } .stack .p3 { right: -4%; }
}

/* ---------- Phone frame ---------- */
.phone { background: #050506; border-radius: 40px; padding: 9px; border: 1px solid #3b3e45; box-shadow: 0 0 0 7px #131418, 0 40px 80px -20px rgba(0, 0, 0, .8), 0 0 60px -10px rgba(255, 70, 70, .18); }
.phone img { border-radius: 31px; width: 100%; aspect-ratio: 9 / 16; object-fit: cover; }

/* ---------- Ticker ---------- */
.ticker { border-block: 1px solid var(--line); background: var(--bg-2); overflow: hidden; }
.ticker-track { display: flex; gap: 44px; width: max-content; padding: 18px 0; animation: tick 38s linear infinite; }
.ticker span { color: #cfd1d6; font-weight: 700; letter-spacing: -.01em; white-space: nowrap; display: inline-flex; align-items: center; gap: 44px; }
.ticker span::after { content: "✦"; color: var(--red); font-size: .8rem; }
@keyframes tick { to { transform: translateX(-50%); } }

/* ---------- Sections ---------- */
section { padding: 96px 0; position: relative; }
.head { max-width: 46rem; margin: 0 auto 56px; text-align: center; }
.head h2 { font-size: clamp(2.1rem, 5vw, 3.5rem); font-weight: 850; margin: 14px 0 16px; }
.head p { color: var(--muted); font-size: 1.12rem; margin: 0; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.step { background: linear-gradient(180deg, var(--surface), var(--bg-2)); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 26px 30px; position: relative; overflow: hidden; }
.step .n { font-size: 4.2rem; font-weight: 900; line-height: 1; letter-spacing: -.06em; color: transparent; -webkit-text-stroke: 1.5px rgba(255, 70, 70, .55); }
.step h3 { font-size: 1.35rem; margin: 18px 0 8px; letter-spacing: -.02em; }
.step p { margin: 0; color: var(--muted); }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }

/* Features */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; padding: 56px 0; }
.feature.flip .media { order: 2; }
.feature h3 { font-size: clamp(1.9rem, 4vw, 2.8rem); font-weight: 850; margin: 14px 0 16px; }
.feature p { color: var(--muted); font-size: 1.08rem; margin: 0 0 22px; }
.media { position: relative; display: flex; justify-content: center; gap: 18px; }
.media::before { content: ""; position: absolute; width: 70%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle, rgba(255, 70, 70, .22), transparent 65%); top: 50%; left: 50%; transform: translate(-50%, -50%); filter: blur(10px); }
.media .phone { width: min(100%, 300px); position: relative; }
.media.duo .phone { width: min(46%, 270px); }
.media.duo .phone:last-child { margin-top: 64px; }
.list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.list li { display: grid; grid-template-columns: 26px 1fr; gap: 12px; color: #dcdee2; }
.list li::before { content: ""; width: 22px; height: 22px; margin-top: 2px; border-radius: 7px; background: var(--red-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ff4646' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center / 14px no-repeat; box-shadow: inset 0 0 0 1px rgba(255, 70, 70, .35); }
.list b { color: var(--text); }
.fine { font-size: .86rem; color: var(--dim); margin-top: 18px !important; }
.quote { margin: 24px 0 0; padding: 16px 18px; border-left: 3px solid var(--red); background: var(--surface); border-radius: 0 14px 14px 0; color: #d9dbe0; font-style: italic; }
@media (max-width: 900px) {
  .feature { grid-template-columns: 1fr; gap: 36px; padding: 40px 0; }
  .feature.flip .media { order: 0; }
  .media .phone { width: min(78%, 280px); }
  .media.duo .phone { width: min(47%, 230px); }
}

/* Principles */
.principles { background: linear-gradient(180deg, var(--bg), #120b0c 50%, var(--bg)); }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; transition: border-color .2s, transform .2s; }
.card:hover { border-color: rgba(255, 70, 70, .45); transform: translateY(-2px); }
.card .ico { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; background: var(--red-soft); color: var(--red); margin-bottom: 18px; }
.card .ico svg { width: 24px; height: 24px; }
.card h3 { font-size: 1.18rem; margin: 0 0 8px; letter-spacing: -.02em; line-height: 1.2; }
.card p { margin: 0; color: var(--muted); font-size: .97rem; }
@media (max-width: 1000px) { .grid4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .grid4 { grid-template-columns: 1fr; } }

/* Premium */
.premium { border: 1px solid #3b2023; border-radius: 30px; padding: clamp(28px, 5vw, 56px); background:
  radial-gradient(30rem 18rem at 85% 0%, rgba(255, 70, 70, .22), transparent 70%), linear-gradient(180deg, #17100f, #0f0f12); display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; }
.premium h2 { font-size: clamp(2rem, 4.6vw, 3.2rem); font-weight: 850; margin: 14px 0 14px; }
.premium p { color: #c9cbd1; font-size: 1.08rem; margin: 0 0 22px; }
.chat { display: grid; gap: 10px; }
.bubble { max-width: 88%; padding: 14px 16px; border-radius: 20px; font-size: .98rem; line-height: 1.45; }
.bubble.me { justify-self: end; background: var(--red); color: #fff; border-bottom-right-radius: 6px; }
.bubble.bot { background: var(--surface-2); border: 1px solid var(--line-2); border-bottom-left-radius: 6px; }
.bubble.bot b { color: var(--text); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips span { border: 1px solid var(--line-2); border-radius: 999px; padding: 7px 13px; font-size: .88rem; color: #d7d9de; }
@media (max-width: 860px) { .premium { grid-template-columns: 1fr; } }

/* Trust */
.trust { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.trust .card { background: transparent; }
@media (max-width: 1000px) { .trust { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .trust { grid-template-columns: 1fr; } }
.disclaimer { margin-top: 26px; padding: 18px 20px; border-radius: 16px; background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--red); color: #d5d7dc; font-size: .96rem; }

/* FAQ */
.faq { max-width: 48rem; margin: 0 auto; }
details { border-bottom: 1px solid var(--line); padding: 20px 4px; }
details:first-child { border-top: 1px solid var(--line); }
summary { cursor: pointer; list-style: none; font-weight: 700; font-size: 1.08rem; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--red); font-size: 1.4rem; line-height: 1; transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p { color: var(--muted); margin: 12px 0 0; }

/* Final CTA */
.final { text-align: center; padding: 120px 0; background: radial-gradient(36rem 20rem at 50% 100%, rgba(255, 70, 70, .2), transparent 70%); }
.final h2 { font-size: clamp(2.4rem, 6.4vw, 4.6rem); font-weight: 850; margin: 0 0 16px; }
.final p { color: var(--muted); font-size: 1.15rem; margin: 0 auto 30px; max-width: 34rem; }
.final .cta { justify-content: center; }

footer { border-top: 1px solid var(--line); padding: 40px 0 48px; color: var(--dim); font-size: .9rem; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 22px 40px; }
footer nav { display: flex; flex-wrap: wrap; gap: 10px 22px; }
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--text); }

/* Reveal on scroll (only when JS is on) */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .ticker-track { animation: none; }
  html { scroll-behavior: auto; }
}