:root {
  --ink: #08142c;
  --muted: #5a6d86;
  --blue: #0e8fdb;
  --navy: #071e3c;
  --line: #d7e2ee;
  --paper: #f7faff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: "Segoe UI", Roboto, system-ui, sans-serif;
}
a { color: inherit; }
img { max-width: 100%; display: block; }
h1, h2, h3 { font-weight: 360; letter-spacing: -.03em; }
h1 { margin: 0 0 16px; font-size: clamp(40px, 5vw, 60px); line-height: 1.12; color: var(--navy); }
h2 { margin: 0 0 28px; font-size: clamp(32px, 4vw, 48px); line-height: 1.15; text-align: center; color: var(--navy); }
h3 { margin: 0 0 8px; font-size: 22px; text-align: center; }
p { color: #3c516c; line-height: 1.55; }

.hero {
  position: relative;
  overflow: hidden;
  padding: 18px 6vw 40px;
  background:
    radial-gradient(700px 320px at 85% 10%, rgba(14, 143, 219, .16), transparent 60%),
    linear-gradient(160deg, #f8fbff 0%, #f4f8fd 60%, #e4edf6 100%);
}
.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto 28px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 750; font-size: 26px; color: var(--blue); }
.brand img { width: 52px; height: 52px; border-radius: 14px; }
.nav nav { margin-left: auto; display: flex; gap: 8px; }
.nav a { text-decoration: none; text-transform: uppercase; letter-spacing: .06em; font-size: 14px; padding: 8px 12px; border-radius: 8px; }
.nav nav a.on, .nav nav a:hover { background: rgba(7, 30, 60, .06); }
.nav-toggle { display: none; margin-left: auto; width: 42px; height: 42px; border: 0; background: #fff; border-radius: 10px; box-shadow: 0 4px 16px rgba(7, 30, 60, .08); }
.nav-toggle span { display: block; height: 2px; margin: 5px 10px; background: var(--navy); }

.hero-grid { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; align-items: center; }
.hero-copy p { max-width: 520px; font-size: 18px; margin: 0 0 22px; }
.cta { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.store {
  width: min(320px, 100%);
  min-height: 64px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 16px;
  border-radius: 14px;
  background: #fff;
  color: #111;
  text-decoration: none;
  border: 1px solid rgba(0, 0, 0, .12);
  box-shadow: 0 10px 28px rgba(7, 30, 60, .08);
}
.store:hover { transform: translateY(-2px); }
.store.soon { opacity: .72; }
.store-icon { width: 40px; display: grid; place-items: center; }
.store-copy { display: flex; flex-direction: column; line-height: 1.1; }
.store-copy small { font-size: 11px; letter-spacing: .04em; text-transform: uppercase; color: #555; }
.store-copy strong { font-size: 18px; }
.hero-phone { display: flex; justify-content: center; }
.orb { position: absolute; border-radius: 50%; pointer-events: none; }
.orb.a { width: 120px; height: 120px; left: 24px; bottom: 80px; background: rgba(14, 143, 219, .08); }
.orb.b { width: 180px; height: 180px; left: 70px; bottom: 20px; background: rgba(255, 90, 70, .06); }

.phone {
  width: min(300px, 78vw);
  padding: 12px;
  border-radius: 36px;
  background: #101820;
  box-shadow: 0 22px 40px rgba(27, 58, 107, .22);
}
.screen { border-radius: 26px; overflow: hidden; min-height: 520px; background: #f4f7fb; }
.float { animation: float 4.6s ease-in-out infinite; }
.d1 { animation-delay: .4s; }
.d2 { animation-delay: .8s; }
@keyframes float { 50% { transform: translateY(-14px); } }
@media (prefers-reduced-motion: reduce) { .float { animation: none; } }

.login-screen { background: linear-gradient(165deg, #071e3c, #0d4f86 60%, #1494d8); color: #fff; text-align: center; padding: 36px 18px; }
.login-screen img { width: 72px; height: 72px; border-radius: 18px; margin: 12px auto; }
.login-screen b { display: block; font-size: 26px; }
.login-screen span, .login-screen em { display: block; color: #d6e8f8; font-style: normal; font-size: 13px; }
.field, .btn { margin: 12px auto 0; width: 86%; border-radius: 10px; padding: 12px; text-align: left; background: #fff; color: #8aa; font-size: 13px; }
.btn { text-align: center; background: #0e8fdb; color: #fff; font-weight: 750; }

.talk-screen, .host-screen { display: flex; flex-direction: column; min-height: 520px; }
.topbar { background: linear-gradient(160deg, #071e3c, #0d4f86); color: #fff; text-align: center; padding: 16px 12px 18px; }
.topbar img { width: 54px; height: 54px; border-radius: 14px; margin: 0 auto 6px; }
.topbar b, .topbar span { display: block; }
.topbar span { color: #d6e8f8; font-size: 12px; }
.topbar.slim { text-align: left; padding: 16px; }
.tools { display: flex; justify-content: center; gap: 8px; padding: 14px; }
.tools i, .tiles i { font-style: normal; }
.tools i { width: 44px; height: 44px; border-radius: 12px; background: #fff; display: grid; place-items: center; font-size: 10px; font-weight: 800; box-shadow: 0 4px 12px rgba(7, 30, 60, .08); }
.tools .rec { color: #c5364a; }
.status, .hint { text-align: center; margin: 4px 0; font-weight: 700; color: var(--ink); }
.hint { font-weight: 500; color: var(--muted); }
.ptt { width: 150px; height: 150px; margin: 18px auto; border-radius: 50%; background: rgba(14, 143, 219, .18); display: grid; place-items: center; }
.ptt span { width: 92px; height: 92px; border-radius: 50%; background: radial-gradient(circle at 40% 35%, #5ec8ff, #0e8fdb); box-shadow: inset 0 -8px 12px rgba(0, 0, 0, .15); }
.room-card { margin: 14px 16px 0; background: #fff; border-radius: 14px; padding: 14px; box-shadow: 0 8px 20px rgba(7, 30, 60, .06); }
.room-card b, .room-card span { display: block; }
.room-card.dim { opacity: .55; }
.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; padding: 12px; flex: 1; }
.tiles i { border-radius: 12px; background: #1f9d55; color: #fff; display: grid; place-items: center; min-height: 72px; font-weight: 800; }
.tiles .hot { background: #d64545; }
.tiles .mute { background: #5d6b7c; }
.host-bar { display: flex; align-items: center; gap: 8px; padding: 10px; }
.host-bar em { flex: 1; font-style: normal; text-align: center; border: 1px solid #c5d4e4; border-radius: 10px; padding: 14px 4px; font-size: 11px; font-weight: 800; }
.host-bar .go { background: #0e8fdb; color: #fff; border: 0; }
.mic { width: 54px; height: 54px; border-radius: 50%; background: radial-gradient(circle at 40% 35%, #5ec8ff, #0e8fdb); }

.band { padding: 72px 6vw; }
.wrap { max-width: 1100px; margin: 0 auto; }
.tag { text-align: center; color: #e85d4c; letter-spacing: .12em; text-transform: uppercase; font-weight: 700; font-size: 13px; }
.feature-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 28px; align-items: center; }
.feature-list { display: grid; gap: 14px; }
.feature {
  display: flex;
  gap: 16px;
  text-align: left;
  border: 0;
  background: transparent;
  border-radius: 20px;
  padding: 14px;
  cursor: pointer;
  color: inherit;
  font: inherit;
}
.feature.on { background: rgba(14, 143, 219, .07); box-shadow: 0 8px 24px rgba(27, 58, 107, .06); }
.feature b { display: block; font-size: 18px; margin-bottom: 6px; }
.feature p { margin: 0; font-size: 15px; }
.ficon { width: 72px; height: 72px; flex: 0 0 72px; border-radius: 16px; background: #fff; box-shadow: 0 8px 20px rgba(0, 0, 0, .08); display: grid; place-items: center; font-size: 28px; }
.feature-stage { display: flex; justify-content: center; min-height: 560px; }

.steps { background: linear-gradient(#fff, #f4f8fd); }
.step-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step-row article { background: #fff; border-radius: 18px; padding: 28px 20px; text-align: center; box-shadow: 0 10px 28px rgba(27, 58, 107, .08); }
.step-row span { width: 46px; height: 46px; margin: 0 auto 14px; border-radius: 50%; display: grid; place-items: center; background: #e7f5fd; color: var(--blue); font-weight: 800; }
.step-row p { margin: 0; }

.stats { background: linear-gradient(160deg, #e7eef6, #f8fbff 40%, #f8fbff); }
.showcase { position: relative; max-width: 920px; margin: 0 auto; min-height: 640px; display: flex; justify-content: center; align-items: center; }
.cards .card {
  position: absolute;
  width: 150px;
  min-height: 110px;
  background: #fff;
  border-radius: 22px;
  box-shadow: 0 12px 28px rgba(27, 58, 107, .12);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 16px;
  text-align: center;
}
.cards b { font-size: 18px; }
.cards span { color: var(--muted); font-size: 13px; }
.cards .card::after { content: ""; width: 42px; height: 4px; border-radius: 99px; background: rgba(14, 143, 219, .35); margin-top: 6px; }
.p2::after, .p5::after { background: rgba(232, 93, 76, .4) !important; }
.p1 { left: 4%; top: 16%; }
.p2 { left: 6%; top: 40%; }
.p3 { left: 8%; top: 66%; }
.p4 { right: 4%; top: 14%; }
.p5 { right: 6%; top: 58%; }

.ready { display: flex; justify-content: space-between; gap: 24px; align-items: center; padding: 56px 8%; background: linear-gradient(135deg, #0b6fbe, #0e8fdb); color: #fff; }
.ready h2, .ready p { color: #fff; text-align: left; margin: 0; }
.ready p { opacity: .92; margin-top: 8px; }
.ready-btn { background: #fff; color: var(--navy); text-decoration: none; font-weight: 800; border-radius: 14px; padding: 16px 22px; box-shadow: 0 8px 24px rgba(0, 0, 0, .16); }
footer { display: flex; gap: 18px; justify-content: center; padding: 22px; background: var(--navy); }
footer a { color: #d5e4f4; text-decoration: none; font-size: 14px; }

@media (max-width: 900px) {
  .nav-toggle { display: inline-block; }
  .nav nav { display: none; position: absolute; top: 78px; right: 6vw; background: #fff; flex-direction: column; padding: 8px; border-radius: 12px; box-shadow: 0 12px 30px rgba(7, 30, 60, .12); z-index: 3; }
  .nav nav.open { display: flex; }
  .hero-grid, .feature-grid, .step-row { grid-template-columns: 1fr; }
  .feature-stage, .showcase { min-height: 0; }
  .showcase { flex-direction: column; }
  .cards { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; width: min(480px, 100%); margin-top: 18px; }
  .cards .card, .p1, .p2, .p3, .p4, .p5 { position: relative; left: auto; right: auto; top: auto; width: auto; }
  .p5 { grid-column: 1 / -1; }
  .ready { flex-direction: column; align-items: flex-start; }
}