:root {
  --paper: #f7f3ea;
  --paper-2: #fffdf8;
  --ink: #191816;
  --muted: #746f68;
  --line: rgba(25, 24, 22, 0.11);
  --red: #d92d20;
  --red-dark: #a91c13;
  --red-soft: #f5d8d3;
  --shadow: 0 24px 70px rgba(56, 42, 25, 0.13);
  --radius-xl: 36px;
  --radius-lg: 26px;
  --container: min(1180px, calc(100vw - 40px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 78% 3%, rgba(217, 45, 32, 0.09), transparent 30rem),
    var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }

.container { width: var(--container); margin-inline: auto; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--red-dark);
  font-weight: 650;
  letter-spacing: .06em;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--red); border-radius: 999px; }
.section-title {
  margin: 14px 0 14px;
  max-width: 760px;
  font-family: "Songti SC", "STSong", serif;
  font-size: clamp(36px, 5vw, 68px);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -.035em;
}
.section-copy { max-width: 700px; margin: 0; color: var(--muted); font-size: 18px; line-height: 1.85; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px);
  background: rgba(247, 243, 234, .82);
}
.site-header .inner { height: 78px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 720; }
.brand img { width: 38px; height: 38px; border-radius: 10px; box-shadow: 0 8px 24px rgba(164, 28, 18, .18); }
.brand small { display: block; color: var(--muted); font-size: 11px; font-weight: 500; letter-spacing: .08em; }
.nav { display: flex; align-items: center; gap: 28px; color: #49453f; font-size: 14px; }
.nav a:hover { color: var(--red); }
.nav .download { padding: 11px 18px; border-radius: 999px; background: var(--ink); color: white; }
.menu-button { display: none; border: 0; background: none; font-size: 14px; }
.mobile-nav { display: none; padding: 6px 20px 20px; }
.mobile-nav[data-open="true"] { display: grid; gap: 6px; }
.mobile-nav a { padding: 12px 4px; border-top: 1px solid var(--line); }

.hero { min-height: 790px; padding: 58px 0 84px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.02fr .98fr; gap: 60px; align-items: start; }
.hero-content { padding-top: 98px; position: relative; z-index: 4; }
.hero h1 {
  margin: 20px 0 24px;
  font-family: "Songti SC", "STSong", serif;
  font-size: clamp(54px, 7.1vw, 104px);
  font-weight: 500;
  letter-spacing: -.055em;
  line-height: .98;
}
.hero h1 span { color: var(--red); }
.hero-copy { max-width: 590px; color: var(--muted); font-size: clamp(18px, 2vw, 22px); line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 24px; border-radius: 999px; font-weight: 650; border: 1px solid var(--line); }
.button.primary { background: var(--red); color: white; border-color: var(--red); box-shadow: 0 16px 34px rgba(217, 45, 32, .23); }
.button.secondary { background: rgba(255,255,255,.45); }
.hero-note { margin-top: 22px; color: #8d877d; font-size: 13px; }

.device-stage { position: relative; min-height: 690px; width: 100%; margin-top: -8px; isolation: isolate; }
.device-stage::before {
  content: "";
  position: absolute;
  inset: 4% -7% 7% -7%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(217,45,32,.14), rgba(217,45,32,.035) 54%, transparent 72%);
  filter: blur(12px);
  z-index: -1;
}
.phone {
  position: absolute;
  width: 252px;
  padding: 7px;
  border: 1px solid rgba(25, 24, 22, .14);
  border-radius: 44px;
  background: rgba(255, 253, 248, .94);
  box-shadow: 0 30px 72px rgba(41, 31, 19, .17), 0 7px 18px rgba(41, 31, 19, .08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform .28s ease, box-shadow .28s ease;
}
.phone img { width: 100%; border-radius: 37px; }
.phone-left { left: 0; top: 126px; transform: rotate(-7deg); z-index: 1; }
.phone-center { left: 50%; top: 14px; transform: translateX(-50%); z-index: 3; }
.phone-right { right: 0; top: 126px; transform: rotate(7deg); z-index: 2; }
.phone-left:hover { transform: rotate(-7deg) translateY(-10px); }
.phone-center:hover { transform: translateX(-50%) translateY(-10px); }
.phone-right:hover { transform: rotate(7deg) translateY(-10px); }

.trust-strip { border-block: 1px solid var(--line); background: rgba(255,255,255,.3); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-item { padding: 30px; border-right: 1px solid var(--line); }
.trust-item:last-child { border-right: 0; }
.trust-item strong { display: block; margin-bottom: 7px; font-size: 16px; }
.trust-item span { color: var(--muted); font-size: 13px; }

.section { padding: 130px 0; }
.feature-grid { margin-top: 55px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.feature-card {
  min-height: 270px;
  padding: 36px;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,.62);
  border: 1px solid rgba(255,255,255,.75);
  box-shadow: 0 16px 50px rgba(73, 58, 38, .06);
}
.feature-index { color: var(--red); font-size: 13px; font-weight: 700; letter-spacing: .1em; }
.feature-card h3 { margin: 70px 0 12px; font-family: "Songti SC", serif; font-size: 30px; font-weight: 500; }
.feature-card p { margin: 0; color: var(--muted); line-height: 1.8; }
.feature-card.accent { background: var(--red); color: white; }
.feature-card.accent .feature-index, .feature-card.accent p { color: rgba(255,255,255,.78); }

.showcase { background: #1b1a18; color: white; overflow: hidden; }
.showcase .section-copy { color: rgba(255,255,255,.63); }
.screenshot-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; margin-top: 60px; align-items: end; }
.screen { padding: 7px; border-radius: 32px; background: #34312d; box-shadow: 0 24px 65px rgba(0,0,0,.35); transition: transform .25s ease; }
.screen:hover { transform: translateY(-12px); }
.screen img { border-radius: 26px; }
.screen:nth-child(2), .screen:nth-child(4) { transform: translateY(44px); }
.screen:nth-child(2):hover, .screen:nth-child(4):hover { transform: translateY(32px); }

.privacy-panel {
  display: grid;
  grid-template-columns: .82fr 1.18fr;
  gap: 60px;
  align-items: center;
  padding: 70px;
  border-radius: var(--radius-xl);
  background: var(--paper-2);
  box-shadow: var(--shadow);
}
.seal { display: grid; place-items: center; width: min(300px, 100%); aspect-ratio: 1; margin-inline: auto; border-radius: 50%; border: 1px solid var(--line); }
.seal img { width: 72%; border-radius: 25%; box-shadow: 0 28px 60px rgba(160, 25, 16, .2); }
.privacy-list { display: grid; gap: 0; margin-top: 32px; }
.privacy-row { display: grid; grid-template-columns: 130px 1fr; gap: 22px; padding: 18px 0; border-top: 1px solid var(--line); }
.privacy-row strong { font-size: 14px; }
.privacy-row span { color: var(--muted); line-height: 1.7; }

.faq-list { margin-top: 50px; border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; list-style: none; padding: 26px 0; display: flex; justify-content: space-between; font-size: 19px; font-weight: 630; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--red); font-size: 24px; font-weight: 400; }
details[open] summary::after { content: "−"; }
details p { max-width: 780px; margin: -4px 0 26px; color: var(--muted); line-height: 1.8; }

.cta { padding: 0 0 120px; }
.cta-card { padding: 70px; border-radius: var(--radius-xl); background: var(--red); color: white; text-align: center; }
.cta-card h2 { margin: 0 0 14px; font-family: "Songti SC", serif; font-size: clamp(38px, 5vw, 64px); font-weight: 500; }
.cta-card p { margin: 0 auto 30px; max-width: 650px; color: rgba(255,255,255,.78); line-height: 1.8; }
.cta-card .button { background: white; color: var(--red-dark); border: none; }

.site-footer { padding: 42px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-grid { display: flex; justify-content: space-between; gap: 30px; align-items: flex-end; }
.footer-brand strong { color: #5f5a52; }
.footer-meta { display: flex; flex-wrap: nowrap; align-items: center; gap: 8px 18px; margin-top: 10px; }
.footer-meta a, .footer-links a { color: inherit; text-decoration: none; transition: color .2s ease; }
.footer-meta a:hover, .footer-links a:hover { color: var(--red-dark); }
.police-filing { display: inline-flex; align-items: center; gap: 5px; white-space: nowrap; }
.police-filing img { width: 18px; height: 20px; object-fit: contain; flex: 0 0 auto; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }

.legal-hero { padding: 100px 0 55px; border-bottom: 1px solid var(--line); }
.legal-hero h1 { margin: 10px 0 16px; font-family: "Songti SC", serif; font-size: clamp(44px, 6vw, 76px); font-weight: 500; }
.legal-hero p { color: var(--muted); }
.legal-wrap { width: min(820px, calc(100vw - 40px)); margin: 0 auto; padding: 70px 0 120px; }
.legal-wrap h2 { margin: 46px 0 14px; font-size: 24px; }
.legal-wrap h3 { margin: 30px 0 12px; font-size: 18px; }
.legal-wrap p, .legal-wrap li { color: #57524b; line-height: 1.95; }
.legal-wrap ul { padding-left: 1.25em; }
.legal-note { padding: 20px 22px; border-left: 3px solid var(--red); background: rgba(255,255,255,.52); color: var(--muted); }
.contact-card { padding: 32px; border-radius: 24px; background: white; box-shadow: 0 16px 45px rgba(54,45,32,.07); }
.contact-card a { color: var(--red-dark); text-decoration: underline; text-underline-offset: 4px; }

@media (max-width: 980px) {
  .nav { display: none; }
  .menu-button { display: block; }
  .hero { min-height: 0; padding: 45px 0 80px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-content { padding-top: 18px; }
  .device-stage { min-height: 650px; width: min(620px, 100%); margin: 35px auto 0; }
  .phone { width: 248px; }
  .phone-left { left: 0; top: 118px; }
  .phone-center { top: 8px; }
  .phone-right { right: 0; top: 118px; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-item:nth-child(2) { border-right: 0; }
  .trust-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .screenshot-row { width: 930px; }
  .showcase .container { overflow: hidden; }
  .privacy-panel { grid-template-columns: 1fr; padding: 50px 30px; }
  .footer-meta { flex-wrap: wrap; }
}

@media (max-width: 640px) {
  :root { --container: calc(100vw - 28px); --radius-xl: 28px; --radius-lg: 22px; }
  .site-header .inner { height: 68px; }
  .hero { min-height: auto; padding: 54px 0 70px; }
  .hero h1 { font-size: clamp(50px, 17vw, 74px); }
  .hero-copy { font-size: 17px; }
  .button { width: 100%; }
  .device-stage { min-height: 500px; width: 520px; left: 50%; transform: translateX(-50%) scale(.76); transform-origin: top center; margin: 28px 0 -112px; }
  .phone { width: 230px; }
  .phone-left { left: 0; top: 106px; }
  .phone-center { top: 0; }
  .phone-right { right: 0; top: 106px; }
  .trust-item { padding: 23px 18px; }
  .section { padding: 90px 0; }
  .section-title { font-size: 42px; }
  .section-copy { font-size: 16px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 240px; padding: 28px; }
  .feature-card h3 { margin-top: 55px; }
  .screenshot-row { width: 760px; gap: 13px; margin-top: 42px; }
  .screen { border-radius: 24px; padding: 5px; }
  .screen img { border-radius: 20px; }
  .privacy-panel { padding: 38px 22px; }
  .privacy-row { grid-template-columns: 1fr; gap: 5px; }
  .cta-card { padding: 54px 24px; }
  .footer-grid { align-items: flex-start; flex-direction: column; gap: 24px; }
  .footer-meta { gap: 8px 14px; }
  .legal-hero { padding: 70px 0 40px; }
  .legal-wrap { padding-top: 45px; }
}
.prelaunch-banner{background:#191816;color:#fff;padding:10px 20px;text-align:center;font-size:13px}.prelaunch-banner a{text-decoration:underline;text-underline-offset:3px}.skip-link{position:absolute;left:-999px;top:0}.skip-link:focus{left:12px;top:12px;z-index:100;background:#fff;padding:10px;border-radius:8px}.support-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:36px 0}.support-box{padding:28px;border-radius:22px;background:#fff;border:1px solid var(--line)}.support-box h3{margin:0 0 10px}.support-box p{margin:0;color:var(--muted);line-height:1.8}@media(max-width:640px){.support-grid{grid-template-columns:1fr}}