/* Transsera — iOS-like tokens shared with the app (DesignTokens.swift). */
:root {
  color-scheme: light dark;
  --bg: #f2f2f7;
  --card: #ffffff;
  --card-2: #f7f7fa;
  --text: #000000;
  --text-2: rgba(60, 60, 67, 0.72);
  --text-3: rgba(60, 60, 67, 0.45);
  --separator: rgba(60, 60, 67, 0.16);
  --accent: #007aff;
  --accent-soft: rgba(0, 122, 255, 0.1);
  --brand-1: #2eb5ce;
  --brand-2: #4183cc;
  --green: #34c759;
  --orange: #ff9500;
  --yellow: #ffcc00;
  --indigo: #5856d6;
  --gray: #8e8e93;
  --nav: rgba(242, 242, 247, 0.82);
  --radius-card: 16px;
  --radius-control: 10px;
  --radius-icon: 7px;
  --content: 1080px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --card: #1c1c1e;
    --card-2: #2c2c2e;
    --text: #ffffff;
    --text-2: rgba(235, 235, 245, 0.72);
    --text-3: rgba(235, 235, 245, 0.42);
    --separator: rgba(84, 84, 88, 0.6);
    --accent: #0a84ff;
    --accent-soft: rgba(10, 132, 255, 0.16);
    --green: #30d158;
    --orange: #ff9f0a;
    --yellow: #ffd60a;
    --indigo: #5e5ce6;
    --nav: rgba(0, 0, 0, 0.78);
    --brand-1: #1f93ab;
    --brand-2: #2e6dc7;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-size: 17px;
  line-height: 1.5;
}
main { flex: 1; }
img { display: block; max-width: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0; }
p { margin: 0; }

.wrap { width: min(var(--content), calc(100% - 32px)); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--card); padding: 8px 14px; border-radius: 8px; }
.skip:focus { left: 16px; }

/* Header: translucent like a UINavigationBar */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--nav);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 0.5px solid var(--separator);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 19px; letter-spacing: -0.01em; }
.brand:hover { text-decoration: none; }
.brand img { width: 34px; height: 34px; border-radius: 8px; }
.nav { display: flex; gap: 2px; flex-wrap: wrap; justify-content: flex-end; }
.nav a { color: var(--text-2); font-weight: 600; font-size: 15px; padding: 8px 12px; border-radius: var(--radius-control); }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); background: var(--accent-soft); text-decoration: none; }
@media (max-width: 560px) {
  .nav { flex-wrap: nowrap; }
  .nav .nav-optional { display: none; }
  .nav a { padding: 8px 8px; font-size: 14px; }
  .brand { font-size: 17px; }
}
@media (max-width: 340px) {
  .brand span { display: none; }
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: linear-gradient(180deg, var(--brand-1) 0%, var(--brand-2) 100%);
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto -20% -60% auto;
  width: 720px;
  height: 720px;
  border: 28px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 48px; align-items: center; padding: 72px 0 80px; }
.hero-icon { width: 76px; height: 76px; border-radius: 18px; box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.35); margin-bottom: 24px; }
.hero h1 { font-size: clamp(34px, 5vw, 54px); font-weight: 800; }
.hero .lead { margin-top: 18px; font-size: 19px; color: rgba(255, 255, 255, 0.9); max-width: 34em; }
.cta { margin-top: 28px; display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.badge img { height: 52px; width: auto; }
.meta { margin-top: 16px; font-size: 14px; color: rgba(255, 255, 255, 0.82); }
@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 40px; padding: 48px 0 56px; }
}

/* Player mock: landscape device with a subtitle translation popup */
.device {
  background: #111;
  border-radius: 28px;
  padding: 14px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.25), 0 30px 60px -30px rgba(0, 0, 0, 0.5);
}
.screen {
  position: relative;
  aspect-ratio: 16 / 10;
  border-radius: 18px;
  overflow: hidden;
  background:
    radial-gradient(circle at 74% 38%, rgba(255, 255, 255, 0.10) 0, transparent 34%),
    linear-gradient(135deg, #3b4252 0%, #1f242d 55%, #14171c 100%);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  container-type: inline-size;
}
.slide {
  position: absolute;
  left: 7%;
  top: 12%;
  width: 46%;
  height: 46%;
  background: #f4f4f1;
  border-radius: 6px;
  padding: 5% 6%;
  color: #1d1d1f;
  display: flex;
  flex-direction: column;
  gap: 2cqw;
}
.slide b { font-size: 4.4cqw; letter-spacing: -0.01em; }
.slide i { display: block; flex: none; height: 1.3cqw; border-radius: 1cqw; background: #d7d9de; }
.slide i:nth-child(3) { width: 82%; }
.slide i:nth-child(4) { width: 64%; }
.slide .formula { font: italic 600 3.1cqw / 1 "Times New Roman", Georgia, serif; white-space: nowrap; color: #2e6dc7; margin-top: auto; }
.speaker { position: absolute; right: 9%; top: 20%; width: 22%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle at 50% 38%, #c9a68a 0 22%, transparent 23%), radial-gradient(ellipse at 50% 100%, #2b3340 0 52%, transparent 53%); opacity: 0.85; }
.player-bar { position: absolute; left: 4%; right: 4%; top: 5%; display: flex; align-items: center; gap: 10px; color: rgba(255, 255, 255, 0.85); font-size: 2.6cqw; font-variant-numeric: tabular-nums; }
.player-bar .track { flex: 1; height: 3px; border-radius: 2px; background: rgba(255, 255, 255, 0.25); position: relative; }
.player-bar .track::before { content: ""; position: absolute; inset: 0 62% 0 0; border-radius: 2px; background: #fff; }
.subtitle {
  position: absolute;
  left: 50%;
  bottom: 4cqw;
  transform: translateX(-50%);
  width: 84%;
  padding: 1.4cqw 2.4cqw;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.72);
  color: #fff;
  text-align: center;
  font-size: 3.7cqw;
  line-height: 1.35;
}
.subtitle mark { background: rgba(10, 132, 255, 0.45); color: #fff; border-radius: 3px; padding: 0 2px; }
.popup {
  position: absolute;
  bottom: 18.5cqw;
  left: 41%;
  display: flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.45em 0.5em 0.45em 0.9em;
  border-radius: 10px;
  background: rgba(44, 44, 46, 0.96);
  color: #fff;
  font-weight: 700;
  font-size: 4cqw;
  white-space: nowrap;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}
.popup::after { content: ""; position: absolute; left: 22%; bottom: -6px; border: 6px solid transparent; border-bottom: 0; border-top-color: rgba(44, 44, 46, 0.96); }
.popup small { font-weight: 500; color: rgba(235, 235, 245, 0.6); }
.popup .svc { display: inline-grid; place-items: center; width: 1.8em; height: 1.8em; border-radius: 6px; background: #4285f4; font-size: 0.8em; }

/* Sections */
.section { padding: 80px 0; }
.section + .section { padding-top: 0; }
.eyebrow { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent); margin-bottom: 10px; }
.section-head { max-width: 680px; margin-bottom: 36px; }
.section-head h2 { font-size: clamp(28px, 3.6vw, 40px); font-weight: 800; }
.section-head p { margin-top: 14px; color: var(--text-2); font-size: 18px; }
.section-head p.eyebrow { margin-top: 0; color: var(--accent); font-size: 13px; }

.formula-row { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.chip { display: inline-flex; align-items: center; gap: 10px; padding: 12px 18px; border-radius: var(--radius-card); background: var(--card); font-weight: 700; font-size: 18px; }
.chip img { width: 30px; height: 30px; border-radius: 7px; }
.op { font-size: 26px; font-weight: 700; color: var(--text-3); }

.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 900px) { .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .grid { grid-template-columns: 1fr; } }
.card { background: var(--card); border-radius: var(--radius-card); padding: 22px; }
.card h3 { font-size: 19px; font-weight: 700; margin-top: 14px; }
.card p { margin-top: 6px; color: var(--text-2); font-size: 16px; }

/* Settings-style icon tile (SettingsIcon in the app) */
.tile { width: 29px; height: 29px; border-radius: var(--radius-icon); display: inline-grid; place-items: center; color: #fff; flex: none; }
.tile svg { width: 17px; height: 17px; }
.tile.blue { background: #007aff; }
.tile.green { background: #34c759; }
.tile.orange { background: #ff9500; }
.tile.yellow { background: #ffcc00; }
.tile.indigo { background: #5856d6; }
.tile.gray { background: #8e8e93; }
.tile.teal { background: #30b0c7; }
.tile.red { background: #ff3b30; }

/* Inset grouped list */
.group { background: var(--card); border-radius: var(--radius-card); overflow: hidden; }
.group-title { font-size: 13px; text-transform: uppercase; letter-spacing: 0.02em; color: var(--text-2); margin: 0 16px 8px; }
.row { display: flex; align-items: center; gap: 14px; padding: 12px 16px; min-height: 52px; color: var(--text); }
.row + .row { border-top: 0.5px solid var(--separator); margin-left: 59px; padding-left: 0; }
.row .row-text { flex: 1; min-width: 0; }
.row .row-text small { display: block; color: var(--text-2); font-size: 14px; }
.row .chev { color: var(--text-3); font-size: 20px; line-height: 1; }
a.row:hover { text-decoration: none; background: var(--card-2); }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.checks { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 14px; }
.checks li { display: flex; gap: 12px; align-items: flex-start; }
.checks li .tile { margin-top: 1px; }
.checks b { display: block; }
.checks span { color: var(--text-2); font-size: 16px; }

.price-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 600px) { .price-cards { grid-template-columns: 1fr; } }
.price-card { background: var(--card); border-radius: var(--radius-card); padding: 22px; display: flex; flex-direction: column; gap: 8px; }
.price-card h3 { font-size: 20px; }
.price-card p { color: var(--text-2); font-size: 16px; }
.pill { align-self: flex-start; margin-top: auto; font-size: 13px; font-weight: 700; color: #1f7f37; background: rgba(52, 199, 89, 0.16); padding: 4px 10px; border-radius: 999px; }
@media (prefers-color-scheme: dark) { .pill { color: #30d158; } }

/* FAQ accordion */
.faq { display: grid; gap: 10px; }
.faq details { background: var(--card); border-radius: var(--radius-card); }
.faq summary { cursor: pointer; list-style: none; padding: 16px 48px 16px 18px; font-weight: 600; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 20px; top: 50%; width: 8px; height: 8px; border-right: 2px solid var(--text-3); border-bottom: 2px solid var(--text-3); transform: translateY(-70%) rotate(45deg); transition: transform 0.2s; }
.faq details[open] summary::after { transform: translateY(-30%) rotate(225deg); }
.faq .answer { padding: 0 18px 18px; color: var(--text-2); }
.faq .answer p + p, .faq .answer p + ul, .faq .answer ul + p { margin-top: 10px; }
.faq .answer ul { margin: 0; padding-left: 20px; }

.final-cta { text-align: center; background: var(--card); border-radius: 24px; padding: 48px 24px; }
.final-cta img.icon { width: 72px; height: 72px; border-radius: 16px; margin: 0 auto 18px; }
.final-cta h2 { font-size: clamp(26px, 3.4vw, 36px); font-weight: 800; }
.final-cta p { color: var(--text-2); margin-top: 10px; }
.final-cta .cta { justify-content: center; }

/* Buttons */
.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 12px 20px; border-radius: var(--radius-control); background: var(--accent); color: #fff; font-weight: 600; }
.button:hover { text-decoration: none; filter: brightness(1.08); }
.button.secondary { background: var(--accent-soft); color: var(--accent); }

/* Legal / document pages */
.page-head { padding: 56px 0 28px; }
.page-head h1 { font-size: clamp(32px, 4.4vw, 46px); font-weight: 800; }
.page-head p { margin-top: 12px; color: var(--text-2); font-size: 18px; max-width: 46em; }
.page-head .updated { font-size: 15px; color: var(--text-3); margin-top: 8px; }
.doc-layout { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 32px; align-items: start; padding-bottom: 80px; }
@media (max-width: 900px) { .doc-layout { grid-template-columns: 1fr; } }
.toc { position: sticky; top: 80px; background: var(--card); border-radius: var(--radius-card); padding: 16px 8px; font-size: 15px; }
@media (max-width: 900px) { .toc { position: static; } }
.toc b { display: block; padding: 0 10px 8px; font-size: 13px; text-transform: uppercase; color: var(--text-2); letter-spacing: 0.02em; }
.toc ol { margin: 0; padding: 0; list-style: none; counter-reset: toc; }
.toc li { counter-increment: toc; }
.toc a { display: block; padding: 6px 10px; border-radius: 8px; color: var(--text); }
.toc a::before { content: counter(toc) ". "; color: var(--text-3); }
.toc a:hover { background: var(--card-2); text-decoration: none; }
.doc { background: var(--card); border-radius: var(--radius-card); padding: clamp(20px, 4vw, 40px); counter-reset: sec; }
.doc section + section { margin-top: 32px; padding-top: 28px; border-top: 0.5px solid var(--separator); }
.doc h2 { font-size: 23px; font-weight: 700; counter-increment: sec; }
.doc h2::before { content: counter(sec) ". "; color: var(--text-3); }
.doc h3 { font-size: 18px; font-weight: 700; margin-top: 20px; }
.doc p, .doc ul, .doc table { margin-top: 12px; }
.doc ul { padding-left: 22px; }
.doc li + li { margin-top: 6px; }
.doc .note { background: var(--accent-soft); border-radius: 12px; padding: 14px 16px; }
.table-scroll { overflow-x: auto; margin-top: 12px; }
.table-scroll table { margin-top: 0; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 0.5px solid var(--separator); }
th { font-weight: 600; color: var(--text-2); font-size: 13px; text-transform: uppercase; letter-spacing: 0.02em; }
kbd { display: inline-block; min-width: 1.8em; text-align: center; font: 600 13px/1.6 ui-monospace, SFMono-Regular, Menlo, monospace; padding: 0 6px; border-radius: 6px; background: var(--card-2); border: 0.5px solid var(--separator); }

/* Support page */
.support-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: 24px; align-items: start; padding-bottom: 80px; }
@media (max-width: 900px) { .support-grid { grid-template-columns: 1fr; } }
.dev-card { background: var(--card); border-radius: var(--radius-card); padding: 24px; display: grid; gap: 14px; }
.dev-card .who { display: flex; align-items: center; gap: 14px; }
.dev-card .who img { width: 56px; height: 56px; border-radius: 13px; }
.dev-card .who small { display: block; color: var(--text-2); font-size: 14px; }
.dev-card .email { font-weight: 600; word-break: break-all; }
.dev-card ul { margin: 0; padding-left: 20px; color: var(--text-2); font-size: 15px; }
.stack { display: grid; gap: 28px; }

/* 404 */
.notfound { text-align: center; padding: 96px 0; }
.notfound h1 { font-size: 72px; font-weight: 800; color: var(--accent); }
.notfound p { margin-top: 12px; color: var(--text-2); font-size: 19px; }
.notfound .cta { justify-content: center; }

/* Footer */
.site-footer { border-top: 0.5px solid var(--separator); padding: 32px 0 40px; font-size: 14px; color: var(--text-2); }
.site-footer .wrap { display: grid; gap: 14px; }
.footer-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; }
.footer-top nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.footer-top nav a { color: var(--text); }
.disclaimer { color: var(--text-3); font-size: 13px; }