:root {
  --accent: #0060df;
  --accent-dark: #004bb0;
  --ink: #10131a;
  --body: #3a4250;
  --muted: #4a5260;
  --faint: #5a6270;
  --card: #f4f6fa;
  --line: #e3e7ee;
  --ios-blue: #007aff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Noto Sans KR", "Apple SD Gothic Neo", system-ui, sans-serif;
  color: var(--ink);
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }
a:hover { color: var(--accent-dark); }
img { display: block; }

.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.wrap-narrow { width: min(820px, calc(100% - 40px)); margin: 0 auto; }

/* NAV */
.nav {
  min-height: 76px;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 12px 24px;
}
.brand {
  display: flex; align-items: center; gap: 12px;
  color: var(--ink); text-decoration: none;
  font-weight: 800; font-size: 20px; letter-spacing: -0.03em;
}
.brand img { width: 40px; height: 40px; border-radius: 10px; }
.nav-links { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 28px; font-size: 15px; font-weight: 500; }
.nav-links a { color: #3a4250; text-decoration: none; }
.nav-links a:hover { color: var(--accent); }
.nav-links .pill {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 20px;
  border-radius: 999px; background: var(--accent); color: #fff; font-weight: 700;
}
.nav-links .pill:hover { background: var(--accent-dark); color: #fff; }

/* BUTTONS */
.store-btn {
  display: inline-flex; align-items: center; gap: 12px;
  min-height: 56px; padding: 0 28px; border-radius: 16px;
  background: var(--ink); color: #fff; text-decoration: none;
  font-size: 17px; font-weight: 700;
}
.store-btn:hover { background: #262b36; color: #fff; }

/* HERO */
.hero { background: linear-gradient(180deg, #eef4ff 0%, #fff 100%); }
.hero-inner { padding: 56px 0 72px; display: flex; flex-wrap: wrap; align-items: center; gap: 48px; }
.hero-text { flex: 1 1 440px; min-width: 0; }
.hero-phone { flex: 1 1 340px; min-width: 0; display: flex; justify-content: center; }
.badge {
  display: inline-flex; align-items: center; min-height: 32px; padding: 0 14px;
  border-radius: 999px; background: #fff; border: 1px solid #d6e2f7;
  color: var(--accent); font-size: 14px; font-weight: 700;
}
h1 {
  margin: 20px 0 0;
  font-size: clamp(40px, 6.4vw, 72px); line-height: 1.12; letter-spacing: -0.045em; font-weight: 800;
}
.lead { margin: 22px 0 0; max-width: 460px; font-size: 20px; line-height: 1.65; color: var(--muted); }
.cta-row { margin-top: 34px; display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.cta-note { font-size: 15px; color: var(--faint); }

/* SECTIONS */
.eyebrow { font-size: 14px; font-weight: 700; color: var(--accent); }
h2 {
  margin: 10px 0 0;
  font-size: clamp(30px, 4.6vw, 44px); line-height: 1.25; letter-spacing: -0.04em; font-weight: 800;
}
.section-lead { margin: 14px 0 0; font-size: 18px; line-height: 1.65; color: var(--muted); max-width: 560px; }
.how { padding: 88px 0 24px; }
.how-body { margin-top: 48px; display: flex; flex-wrap: wrap; align-items: center; gap: 48px; }
.steps { flex: 1 1 380px; min-width: 0; display: flex; flex-direction: column; gap: 14px; }
.step { display: flex; gap: 18px; padding: 24px; border-radius: 20px; background: var(--card); }
.step-num {
  flex: 0 0 40px; width: 40px; height: 40px; border-radius: 20px;
  background: var(--accent); color: #fff; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.step h3 { margin: 0; font-size: 19px; font-weight: 700; letter-spacing: -0.02em; }
.step p { margin: 6px 0 0; font-size: 16px; line-height: 1.65; color: var(--muted); }
.phones { flex: 1 1 520px; min-width: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 28px; }

/* SHIELD BAND */
.band {
  margin: 64px auto 0; padding: 48px clamp(24px, 5vw, 56px);
  border-radius: 32px; background: var(--ink); color: #fff;
  display: flex; flex-wrap: wrap; align-items: center; gap: 40px;
}
.band img { width: 180px; height: 180px; border-radius: 36px; flex: 0 0 auto; }
.band-text { flex: 1 1 320px; min-width: 0; }
.band .eyebrow { color: #8fbcff; }
.band h2 { font-size: clamp(28px, 4vw, 38px); line-height: 1.3; }
.band p { margin: 14px 0 0; font-size: 17px; line-height: 1.7; color: #c4cad6; max-width: 560px; }

/* FEATURES */
.features { padding: 96px 0 24px; }
.grid { margin-top: 40px; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card { padding: 28px; border-radius: 24px; background: var(--card); }
.card h3 { margin: 0; font-size: 18px; font-weight: 700; letter-spacing: -0.02em; }
.card p { margin: 8px 0 0; font-size: 15px; line-height: 1.7; color: var(--muted); }

/* CTA */
.cta {
  margin: 72px auto 0; padding: 64px 24px; border-radius: 32px;
  background: linear-gradient(180deg, #eef4ff 0%, #dfeaff 100%); text-align: center;
}
.cta img { width: 72px; height: 72px; border-radius: 18px; margin: 0 auto; }
.cta h2 { margin-top: 22px; }
.cta p { margin: 12px 0 0; font-size: 17px; color: var(--muted); }
.cta .store-btn { margin-top: 28px; }

/* FOOTER */
.footer {
  padding: 48px 0 56px;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 16px 24px; font-size: 14px; color: var(--faint);
}
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 24px; }

/* PHONE MOCKUPS (illustrations, not real screenshots) */
.phone {
  width: 250px; height: 520px; border: 9px solid var(--ink); border-radius: 42px;
  background: #f2f2f7; position: relative; overflow: hidden;
  box-shadow: 0 24px 48px rgba(16, 19, 26, 0.16);
}
.phone.big { width: 292px; height: 600px; border-width: 10px; border-radius: 48px; box-shadow: 0 30px 60px rgba(16, 19, 26, 0.18); }
.phone::before {
  content: ""; position: absolute; top: 9px; left: 50%; width: 72px; height: 20px;
  margin-left: -36px; border-radius: 12px; background: var(--ink); z-index: 2;
}
.phone.big::before { top: 10px; width: 84px; height: 24px; margin-left: -42px; border-radius: 14px; }
.ph-pad { padding: 44px 12px 0; }
.phone.big .ph-pad { padding: 52px 16px 0; }
.ph-row { display: flex; align-items: center; justify-content: space-between; }
.ph-title { font-size: 13px; font-weight: 700; }
.ph-plus {
  width: 28px; height: 28px; border-radius: 14px; background: var(--ios-blue); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 20px; line-height: 1;
}
.ph-h { margin-top: 18px; font-size: 22px; font-weight: 800; letter-spacing: -0.04em; line-height: 1.2; }
.ph-sub { margin-top: 6px; font-size: 11px; color: #6b7280; }
.ph-card { margin-top: 14px; padding: 12px; border-radius: 16px; background: #fff; }
.ph-card-row { display: flex; align-items: center; gap: 10px; }
.ph-card-row img { width: 46px; height: 46px; border-radius: 11px; }
.ph-card b { display: block; font-size: 12px; }
.ph-card small { display: block; margin-top: 2px; font-size: 10px; color: #6b7280; }
.ph-btns { margin-top: 10px; display: flex; gap: 6px; }
.ph-btn {
  flex: 1; height: 30px; border-radius: 15px; background: var(--ios-blue); color: #fff;
  font-size: 11px; font-weight: 700; display: flex; align-items: center; justify-content: center;
}
.ph-btn.light { flex: 0 0 54px; background: #dbe8ff; color: #0a5fd1; }
.ph-section { margin-top: 16px; display: flex; justify-content: space-between; align-items: baseline; }
.ph-section b { font-size: 14px; font-weight: 800; }
.ph-section small { font-size: 9px; color: #6b7280; }
.ph-empty { margin-top: 8px; padding: 20px 12px; border-radius: 16px; background: #fff; text-align: center; }
.ph-empty b { display: block; margin-top: 8px; font-size: 12px; }
.ph-empty small { display: block; margin-top: 3px; font-size: 9px; color: #6b7280; }
.ph-chip { padding: 5px 9px; border-radius: 12px; background: #fff; color: #0a5fd1; font-size: 10px; font-weight: 700; }
.ph-chip.off { color: #8a919c; }
.ph-box { margin-top: 14px; padding: 10px; border-radius: 12px; background: #fff; display: flex; justify-content: space-between; font-size: 10px; }
.ph-box span:last-child { color: #0a5fd1; font-weight: 700; }
.ph-note { margin-top: 5px; font-size: 8px; color: #6b7280; }
.ph-label { margin-top: 12px; font-size: 9px; color: #6b7280; font-weight: 700; }
.ph-panel { margin-top: 5px; padding: 8px 6px 12px; border-radius: 12px; background: #fff; }
.ph-seg { display: flex; border-radius: 8px; background: #eeeef1; padding: 2px; font-size: 9px; font-weight: 700; text-align: center; }
.ph-seg div { flex: 1; padding: 5px 0; color: #6b7280; }
.ph-seg div.on { border-radius: 6px; background: #fff; color: var(--ink); }
.ph-wheels { margin-top: 12px; display: flex; justify-content: center; gap: 10px; font-size: 11px; text-align: center; }
.ph-wheel { width: 84px; line-height: 2; }
.ph-wheel i { font-style: normal; color: #a3a8b1; display: block; }
.ph-wheel b { display: block; border-radius: 6px; background: #eeeef1; font-weight: 700; }
.ph-manual { margin-top: 12px; padding-top: 8px; border-top: 1px solid #eeeef1; display: flex; justify-content: space-between; font-size: 9px; }
.shield { background: linear-gradient(180deg, #e7e8ec 0%, #f6f6f8 55%); }
.shield-center { position: absolute; left: 0; right: 0; top: 46%; text-align: center; }
.shield-center img { width: 60px; height: 60px; border-radius: 14px; margin: 0 auto; }
.shield-center b { display: block; margin-top: 10px; font-size: 14px; font-weight: 800; }
.shield-center small { display: block; margin-top: 4px; font-size: 10px; color: var(--faint); }
.shield-btn {
  position: absolute; left: 14px; right: 14px; bottom: 22px; height: 38px; border-radius: 19px;
  background: var(--ios-blue); color: #fff; font-size: 12px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}

/* PRIVACY PAGE */
.doc-hero { background: linear-gradient(180deg, #eef4ff 0%, #fff 100%); }
.doc-hero .wrap-narrow { padding: 56px 0 40px; }
.doc-hero h1 { margin: 12px 0 0; font-size: clamp(32px, 5.6vw, 52px); line-height: 1.2; }
.doc-hero p { margin: 18px 0 0; font-size: 18px; line-height: 1.7; color: var(--muted); }
.updated {
  margin-top: 20px; display: inline-flex; align-items: center; min-height: 34px; padding: 0 14px;
  border-radius: 999px; background: #fff; border: 1px solid #d6e2f7; font-size: 14px; color: var(--muted);
}
.doc { padding: 8px 0 72px; }
.chips { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.chip { padding: 20px; border-radius: 18px; background: var(--card); }
.chip b { display: block; font-size: 15px; }
.chip span { display: block; margin-top: 4px; font-size: 14px; line-height: 1.6; color: var(--muted); }
.section { margin-top: 14px; padding: clamp(22px, 4vw, 32px); border-radius: 22px; border: 1px solid var(--line); }
.section h2 { margin: 0; font-size: 21px; letter-spacing: -0.02em; line-height: 1.4; font-weight: 800; }
.section p { margin: 14px 0 0; font-size: 16px; line-height: 1.7; color: var(--body); }
.section ul { margin: 14px 0 0; padding-left: 22px; display: grid; gap: 10px; font-size: 16px; line-height: 1.7; color: var(--body); }
.doc-footer { border-top: 1px solid var(--line); padding: 32px 0 56px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px 24px; font-size: 14px; color: var(--faint); }

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}