:root {
  --paper: #f7f3ea;
  --paper-deep: #efe8da;
  --card: #fffcf5;
  --ink: #1e1b18;
  --ink-soft: #5c564f;
  --accent: #c8412f;
  --accent-soft: rgba(200, 65, 47, 0.1);
  --line: rgba(30, 27, 24, 0.1);
  --shadow: 0 24px 60px rgba(30, 27, 24, 0.18);
  --radius: 22px;
  --hanzi: "PingFang SC", "Hiragino Sans GB", "Noto Serif SC", "Noto Sans SC", serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #161412;
    --paper-deep: #1d1a17;
    --card: #221f1c;
    --ink: #ede6da;
    --ink-soft: #a9a196;
    --accent: #d9604f;
    --accent-soft: rgba(217, 96, 79, 0.14);
    --line: rgba(237, 230, 218, 0.12);
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
img { max-width: 100%; display: block; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* Navigation */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(16px);
  -webkit-backdrop-filter: saturate(1.4) blur(16px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; gap: 24px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a { color: var(--ink-soft); text-decoration: none; font-size: 15px; }
.nav-links a:hover { color: var(--ink); }
@media (max-width: 640px) { .nav-links { display: none; } }

/* Hero */
.hero { padding: 64px 0 40px; overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; align-items: center; }
.eyebrow { color: var(--accent); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; font-size: 13px; }
.hero h1 { font-size: clamp(36px, 5.4vw, 60px); line-height: 1.05; letter-spacing: -0.02em; margin: 12px 0 18px; }
.hero h1 .hz { font-family: var(--hanzi); color: var(--accent); font-weight: 600; }
.lead { font-size: 20px; color: var(--ink-soft); margin: 0 0 28px; max-width: 34ch; }
.cta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.store-btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--ink); color: var(--paper); text-decoration: none;
  padding: 12px 20px; border-radius: 14px; font-weight: 600;
}
.store-btn small { display: block; font-weight: 500; font-size: 11px; opacity: 0.75; line-height: 1; }
.store-btn span { line-height: 1.15; }
.store-btn svg { width: 22px; height: 22px; fill: currentColor; }
.store-btn[aria-disabled="true"] { cursor: default; }
.pill { font-size: 14px; color: var(--ink-soft); }
.facts { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 26px; color: var(--ink-soft); font-size: 15px; }
.facts span::before { content: "✓"; color: var(--accent); margin-right: 6px; font-weight: 700; }

.phones { position: relative; height: 560px; }
.phone {
  position: absolute; width: 260px; border-radius: 42px; padding: 9px;
  background: #111; box-shadow: var(--shadow);
}
.phone img { border-radius: 34px; }
.phone.front { right: 38%; top: 0; z-index: 2; transform: rotate(-4deg); }
.phone.back { right: 2%; top: 56px; transform: rotate(5deg); }
@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .phones { height: 470px; max-width: 440px; margin: 0 auto; width: 100%; }
  .phone { width: 220px; }
  .phone.front { right: auto; left: 2%; }
}

/* Sections */
section { padding: 72px 0; }
section.alt { background: var(--paper-deep); }
.section-head { max-width: 640px; margin-bottom: 36px; }
.section-head h2 { font-size: clamp(28px, 3.6vw, 40px); line-height: 1.15; letter-spacing: -0.01em; margin: 8px 0 12px; }
.section-head p { color: var(--ink-soft); margin: 0; font-size: 18px; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 860px) { .features { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .features { grid-template-columns: 1fr; } }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.feature .glyph {
  width: 48px; height: 48px; border-radius: 13px; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); font: 600 26px/1 var(--hanzi); margin-bottom: 14px;
}
.feature h3 { margin: 0 0 6px; font-size: 19px; }
.feature p { margin: 0; color: var(--ink-soft); font-size: 16px; }

.gallery {
  display: flex; gap: 22px; overflow-x: auto; padding: 8px 20px 28px;
  scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
  max-width: 1080px; margin: 0 auto;
}
.gallery figure { margin: 0; flex: 0 0 220px; scroll-snap-align: start; text-align: center; }
.gallery .phone { position: static; width: 220px; transform: none; padding: 7px; border-radius: 34px; }
.gallery .phone img { border-radius: 28px; }
.gallery figcaption { margin-top: 12px; font-size: 15px; color: var(--ink-soft); }

.steps-grid { display: grid; grid-template-columns: 1fr 300px; gap: 48px; align-items: center; }
@media (max-width: 760px) { .steps-grid { grid-template-columns: 1fr; } .steps-grid .phone { margin: 0 auto; } }
.steps-grid .phone { position: static; transform: none; width: 280px; }
ol.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; }
ol.steps li { counter-increment: step; position: relative; padding: 0 0 22px 52px; }
ol.steps li::before {
  content: counter(step); position: absolute; left: 0; top: -2px;
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  background: var(--accent); color: #fff; font-weight: 700; font-size: 16px;
}
ol.steps strong { display: block; }
ol.steps span { color: var(--ink-soft); font-size: 16px; }

.faq { max-width: 760px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 16px; margin-bottom: 10px; }
.faq summary { cursor: pointer; padding: 16px 20px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 22px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0; padding: 0 20px 18px; color: var(--ink-soft); }

.contact {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
@media (max-width: 700px) { .contact { grid-template-columns: 1fr; } }
.contact .feature a.mail { font-size: 19px; font-weight: 600; word-break: break-all; }

footer { padding: 36px 0 56px; color: var(--ink-soft); font-size: 14px; border-top: 1px solid var(--line); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 10px 28px; justify-content: space-between; }
footer a { color: var(--ink-soft); }

/* Privacy policy page */
.doc { max-width: 720px; margin: 0 auto; padding: 48px 20px 64px; }
.doc h1 { font-size: 36px; margin: 0 0 4px; letter-spacing: -0.01em; }
.doc .date { color: var(--ink-soft); margin: 0 0 28px; }
.doc .card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 6px 22px 16px; margin: 14px 0; }
.doc h2 { font-size: 20px; margin: 18px 0 6px; }