:root {
  --asphalt: #1a1c21;
  --asphalt-deep: #121316;
  --asphalt-light: #292b33;
  --line: #ffcc38;
  --paper: #faf5e6;
  --ink: #212129;
  --sign: #2666d9;
  --green: #52d18f;
  --text: #f4f2ec;
  --muted: #a3a7b0;
  --radius: 20px;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--asphalt);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard", "Noto Sans KR", "Segoe UI", sans-serif;
  line-height: 1.6;
  word-break: keep-all;
  overflow-wrap: break-word;
}

a { color: var(--line); }

/* Language switching: <html data-lang="ko|en">, content tagged with lang. */
html[data-lang="ko"] [lang="en"]:not(html),
html[data-lang="en"] [lang="ko"]:not(html) { display: none !important; }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

/* Header */
.top {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--asphalt) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 800; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.lang-toggle {
  display: flex; background: var(--asphalt-light); border-radius: 999px; padding: 3px;
}
.lang-toggle button {
  border: 0; background: transparent; color: var(--muted);
  font: inherit; font-size: 13px; font-weight: 700;
  padding: 6px 12px; border-radius: 999px; cursor: pointer;
}
.lang-toggle button[aria-pressed="true"] { background: var(--line); color: var(--ink); }
.lang-toggle a {
  color: var(--muted); text-decoration: none;
  font-size: 13px; font-weight: 700; padding: 6px 12px; border-radius: 999px;
}
.lang-toggle a[aria-current="page"] { background: var(--line); color: var(--ink); }

/* Hero */
.hero { padding: 64px 0 40px; }
.hero .wrap { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.hero-icon { width: 88px; height: 88px; border-radius: 22px; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4); }
.hero h1 { font-size: clamp(36px, 6vw, 60px); line-height: 1.15; margin: 24px 0 16px; letter-spacing: -0.02em; }
.hero h1 em { font-style: normal; color: var(--line); }
.hero p.lead { font-size: 19px; color: var(--muted); margin: 0 0 28px; max-width: 30em; }
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--line); color: var(--ink);
  font-weight: 800; padding: 14px 22px; border-radius: 999px; text-decoration: none;
}
.badge.soon { background: var(--asphalt-light); color: var(--text); }

.phone {
  position: relative; margin: 0 auto; width: min(100%, 320px);
  padding: 10px; background: #08080a; border-radius: 48px;
  border: 2px solid #4e515a;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
}
.phone img { display: block; width: 100%; border-radius: 38px; }
.bay { position: relative; padding: 0 34px; }
.bay::before, .bay::after {
  content: ""; position: absolute; top: 18%; bottom: -40px; width: 8px;
  background: var(--line); opacity: 0.6;
}
.bay::before { left: 0; }
.bay::after { right: 0; }

/* Sections */
section { padding: 56px 0; }
section h2 { font-size: clamp(26px, 4vw, 36px); line-height: 1.25; margin: 0 0 12px; letter-spacing: -0.01em; }
section .sub { color: var(--muted); margin: 0 0 32px; font-size: 17px; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.step {
  background: var(--asphalt-light); border-radius: var(--radius); padding: 24px;
  border-top: 4px solid var(--line);
}
.step .num {
  display: inline-grid; place-items: center; width: 32px; height: 32px;
  border-radius: 50%; background: var(--line); color: var(--ink); font-weight: 800;
}
.step h3 { margin: 14px 0 6px; font-size: 20px; }
.step p { margin: 0; color: var(--muted); }

.gallery {
  display: flex; gap: 20px; overflow-x: auto; scroll-snap-type: x mandatory;
  padding: 8px 20px 24px; margin: 0 -20px;
}
.gallery figure { flex: 0 0 240px; margin: 0; scroll-snap-align: center; }
.gallery .phone { width: 100%; border-radius: 40px; padding: 8px; }
.gallery .phone img { border-radius: 32px; }
.gallery figcaption { text-align: center; color: var(--muted); font-size: 15px; margin-top: 12px; }

.plans { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.plan { background: var(--asphalt-light); border-radius: var(--radius); padding: 28px; }
.plan.pro { outline: 2px solid var(--line); }
.plan h3 { margin: 0 0 4px; font-size: 22px; }
.plan .price { color: var(--muted); margin: 0 0 16px; }
.plan ul { margin: 0; padding-left: 20px; }
.plan li { margin: 6px 0; }

.stat {
  display: flex; gap: 20px; align-items: center;
  background: var(--paper); color: var(--ink); border-radius: var(--radius); padding: 28px;
}
.stat strong { font-size: 56px; line-height: 1; color: #1f9a5b; }

.note {
  background: var(--asphalt-light); border-radius: var(--radius); padding: 20px 24px;
  color: var(--muted); font-size: 15px;
}

footer { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 32px 0 48px; color: var(--muted); font-size: 14px; }
footer nav { display: flex; flex-wrap: wrap; gap: 20px; margin-bottom: 12px; }
footer a { color: var(--text); text-decoration: none; }
footer a:hover { color: var(--line); }

/* Document pages (privacy) */
.doc { padding: 48px 0 24px; }
.doc .wrap { max-width: 760px; }
.doc h1 { font-size: clamp(30px, 5vw, 42px); line-height: 1.2; margin: 0 0 8px; }
.doc .meta { color: var(--muted); margin: 0 0 32px; }
.doc h2 { font-size: 21px; margin: 36px 0 10px; }
.doc p, .doc li { color: #d9d8d3; }
.doc ul { padding-left: 22px; }
.doc li { margin: 6px 0; }
.summary {
  background: var(--paper); color: var(--ink); border-radius: var(--radius); padding: 24px 26px;
}
.summary p, .summary li { color: var(--ink); margin: 4px 0; }
.summary strong { font-size: 18px; }
table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 15px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }

/* Support FAQ */
.faq details {
  background: var(--asphalt-light); border-radius: 16px; padding: 0 20px; margin: 10px 0;
}
.faq summary {
  cursor: pointer; font-weight: 700; padding: 16px 0; list-style: none;
  display: flex; justify-content: space-between; gap: 12px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--line); font-weight: 800; }
.faq details[open] summary::after { content: "−"; }
.faq details > :not(summary) { margin: 0 0 16px; }
.contact {
  display: flex; flex-wrap: wrap; align-items: center; gap: 16px;
  background: var(--asphalt-light); border-radius: var(--radius); padding: 24px;
}
.contact p { margin: 0; flex: 1 1 260px; }

@media (max-width: 760px) {
  .hero { padding-top: 40px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 40px; }
  .steps, .plans { grid-template-columns: 1fr; }
  .stat { flex-direction: column; align-items: flex-start; }
  .bay { padding: 0 24px; }
  .gallery figure { flex-basis: 200px; }
}