/* opsy.kr 첫 화면 전용. 약관·고객지원 페이지는 style.css 그대로. */
:root {
  --bg: #f4f5f7; --surface: #fff; --text: #191f28; --sub: #6b7684; --line: #e5e8eb;
  --accent: #4c6fff; --accent-ink: #3552e0; --accent-soft: #eef1ff;
  --band: #141a2e; --band-text: #fff; --band-sub: #b9c1d9;
  --frame: #191f28;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317; --surface: #1b1e24; --text: #eceef2; --sub: #9ca3af; --line: #2c2f36;
    --accent: #6683ff; --accent-ink: #8ea2ff; --accent-soft: #1f2640;
    --band: #1f2640; --band-sub: #aab4d6;
    --frame: #2c2f36;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.65 "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif;
  word-break: keep-all; overflow-wrap: anywhere; -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-ink); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
h1, h2, h3 { letter-spacing: -0.03em; line-height: 1.25; margin: 0; }
section h2 { font-size: clamp(24px, 6vw, 34px); font-weight: 800; }
ul, ol { margin: 0; padding: 0; list-style: none; }
figure { margin: 0; }

/* 머리글 */
.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; height: 56px; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--text); text-decoration: none; font-weight: 800; font-size: 19px; letter-spacing: -0.02em; }
.brand svg { width: 26px; height: 26px; }
.top nav { display: flex; align-items: center; gap: 4px; font-size: 14px; }
.top nav a { color: var(--sub); text-decoration: none; padding: 8px; }
.top nav a:hover { color: var(--text); }
.top nav a.login { color: var(--text); font-weight: 600; }
.top nav a.start { margin-left: 4px; padding: 8px 14px; border-radius: 10px; background: var(--accent); color: #fff; font-weight: 700; }
@media (max-width: 560px) { .top nav a:not(.login):not(.start) { display: none; } }

/* 버튼 */
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; }
.btn { display: inline-flex; align-items: center; min-height: 52px; padding: 0 24px; border-radius: 14px; background: var(--accent); color: #fff; font-weight: 700; font-size: 16px; text-decoration: none; }
.btn:hover, .top nav a.start:hover { filter: brightness(0.92); }
.btn.quiet { background: var(--surface); color: var(--text); }
.btn.quiet:hover { background: var(--line); }

/* 첫 화면 */
.hero { padding: 40px 0 64px; overflow: hidden; }
.hero .wrap { display: grid; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(38px, 11vw, 68px); font-weight: 800; letter-spacing: -0.045em; line-height: 1.12; }
.lead { font-size: clamp(16px, 4.2vw, 19px); color: var(--sub); margin: 20px 0 28px; max-width: 30em; }
.note { margin: 14px 0 0; font-size: 14px; color: var(--sub); }
.stores { display: flex; gap: 8px; margin: 16px 0 0; }
.stores[hidden] { display: none; }
.hero-shot { position: relative; display: grid; place-items: center; padding: 8px 0; }
.ring { position: absolute; width: min(122%, 540px); color: var(--accent); opacity: 0.22; transform: rotate(-8deg); }
.hero-shot .phone { position: relative; width: min(64vw, 300px); }
@media (min-width: 880px) {
  .hero { padding: 72px 0 96px; }
  .hero .wrap { grid-template-columns: 1.15fr 0.85fr; gap: 48px; }
}

/* 폰·브라우저 틀 */
.phone.cut { border-radius: 34px 34px 0 0; padding-bottom: 0; -webkit-mask-image: linear-gradient(#000 70%, transparent); mask-image: linear-gradient(#000 70%, transparent); box-shadow: none; }
.phone.cut img { aspect-ratio: 600 / 760; object-fit: cover; object-position: top; border-radius: 28px 28px 0 0; }
.phone { background: var(--frame); padding: 7px; border-radius: 34px; box-shadow: 0 24px 48px -20px rgba(20, 26, 46, 0.45); }
.phone img { display: block; width: 100%; height: auto; border-radius: 28px; }
.browser { background: var(--surface); border-radius: 12px; padding: 22px 6px 6px; position: relative; box-shadow: 0 24px 48px -24px rgba(20, 26, 46, 0.35); }
.browser::before { content: ""; position: absolute; top: 8px; left: 10px; width: 36px; height: 7px; background: radial-gradient(circle, var(--line) 3.5px, transparent 4px) 0 0 / 12px 7px repeat-x; }
.browser img { display: block; width: 100%; height: auto; border-radius: 6px; }
.browser figcaption { position: absolute; top: 2px; right: 12px; font-size: 12px; color: var(--sub); }

/* 이런 고민 */
.pains { padding: 56px 0; background: var(--surface); }
.pain-list { margin-top: 28px; display: grid; gap: 0; }
.pain-list li { padding: 20px 0; border-top: 1px solid var(--line); display: grid; gap: 6px; }
.pain-list li:last-child { border-bottom: 1px solid var(--line); }
.pain-list strong { font-size: clamp(19px, 5vw, 22px); letter-spacing: -0.02em; text-decoration: line-through; text-decoration-color: var(--accent); text-decoration-thickness: 2px; }
.pain-list span { color: var(--sub); }
@media (min-width: 880px) {
  .pain-list li { grid-template-columns: 1fr 1fr; gap: 32px; align-items: baseline; padding: 24px 0; }
}

/* 핵심 기능 */
.features { padding: 72px 0 24px; }
.feature { display: grid; gap: 32px; align-items: center; padding: 0 0 72px; }
.feature .phone { width: min(64vw, 280px); justify-self: center; }
.claim { font-size: clamp(18px, 4.8vw, 22px); font-weight: 700; letter-spacing: -0.02em; margin: 10px 0 18px; }
.feature h2 { color: var(--accent-ink); font-size: 17px; letter-spacing: -0.01em; }
.feature-text ul { display: grid; gap: 10px; }
.feature-text li { position: relative; padding-left: 20px; color: var(--sub); }
.feature-text li::before { content: ""; position: absolute; left: 2px; top: 0.62em; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
@media (min-width: 880px) {
  .feature { grid-template-columns: 1fr 1fr; gap: 64px; padding-bottom: 104px; }
  .feature .claim { font-size: 28px; }
  .feature.flip .feature-text { order: 2; }
  .feature.wide { grid-template-columns: 0.8fr 1.2fr; }
}

.more { border-top: 1px solid var(--line); padding: 48px 0 56px; }
.more h2 { font-size: clamp(20px, 5vw, 24px); }
.more dl { margin: 20px 0 0; display: grid; gap: 20px; }
.more dt { font-weight: 700; }
.more dd { margin: 2px 0 0; color: var(--sub); font-size: 15px; }
@media (min-width: 640px) { .more dl { grid-template-columns: 1fr 1fr; gap: 28px 40px; } }

/* 시작 3단계 */
.steps { padding: 56px 0; background: var(--surface); }
.steps ol { margin-top: 28px; display: grid; gap: 24px; counter-reset: step; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 40px 1fr; column-gap: 14px; }
.steps li::before { content: counter(step); grid-row: span 2; width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent-ink); font-weight: 800; }
.steps strong { font-size: 18px; letter-spacing: -0.02em; padding-top: 7px; }
.steps span { color: var(--sub); }
@media (min-width: 880px) { .steps ol { grid-template-columns: repeat(3, 1fr); gap: 32px; } }

/* 가격 */
.price { background: var(--band); color: var(--band-text); padding: 64px 0; }
.price h2 { font-size: 17px; color: var(--band-sub); letter-spacing: -0.01em; }
.amount { margin: 12px 0 0; font-size: clamp(44px, 13vw, 72px); font-weight: 800; letter-spacing: -0.045em; line-height: 1.1; font-variant-numeric: tabular-nums; }
.amount .unit { display: block; font-size: clamp(18px, 4.6vw, 22px); font-weight: 600; letter-spacing: -0.02em; color: var(--band-sub); margin-bottom: 4px; }
.vat { margin: 6px 0 28px; color: var(--band-sub); }
.price ul { display: grid; gap: 10px; }
.price li { position: relative; padding-left: 26px; }
.price li::before { content: ""; position: absolute; left: 2px; top: 0.45em; width: 12px; height: 7px; border: solid #8ea2ff; border-width: 0 0 2.5px 2.5px; transform: rotate(-45deg); }
@media (min-width: 880px) {
  .price .wrap { display: grid; grid-template-columns: 1fr 1fr; column-gap: 64px; align-items: end; }
  .price h2, .amount, .vat { grid-column: 1; }
  .price ul { grid-column: 2; grid-row: 1 / span 3; align-self: center; font-size: 18px; }
}

/* 자주 묻는 질문 */
.faq { padding: 64px 0; }
.faq h2 { margin-bottom: 20px; }
.faq details { border-top: 1px solid var(--line); max-width: 760px; }
.faq details:last-of-type { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 18px 36px 18px 0; font-weight: 700; font-size: 17px; letter-spacing: -0.02em; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 8px; top: 50%; width: 9px; height: 9px; border: solid var(--sub); border-width: 0 2px 2px 0; transform: translateY(-70%) rotate(45deg); transition: transform 0.15s; }
.faq details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.faq details p { margin: 0 0 20px; color: var(--sub); }

/* 마지막 문의 */
.contact { padding: 64px 0 72px; background: var(--accent-soft); }
.contact p { color: var(--sub); margin: 12px 0 24px; }

footer { border-top: 1px solid var(--line); padding: 24px 0 40px; font-size: 13px; color: var(--sub); }
footer .links { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-bottom: 8px; }
footer a { color: var(--sub); }
footer .biz { margin-top: 4px; }