/* 빌집사 랜딩 — 인트로 일러스트의 크림색 바탕 + 토스 파랑 */
:root {
  --bg: #fbf5ea; --paper: #ffffff; --ink: #1d2433; --sub: #5b6474; --muted: #8b95a1; --line: #eadfcb;
  --blue: #3182f6; --blue-deep: #1b64da; --blue-weak: #e8f3ff; --cream: #f5ead6;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --bg: #14161b; --paper: #1d2027; --ink: #eceef2; --sub: #a9b0bb; --muted: #7f8791; --line: #2b2f38;
    --blue-weak: #1b2a40; --cream: #22252d; }
}
:root[data-theme="dark"] { --bg: #14161b; --paper: #1d2027; --ink: #eceef2; --sub: #a9b0bb; --muted: #7f8791; --line: #2b2f38;
  --blue-weak: #1b2a40; --cream: #22252d; }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); word-break: keep-all; overflow-wrap: anywhere;
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
main { max-width: 1040px; margin: 0 auto; padding: 0 16px; }

/* 상단 */
.nav { position: sticky; top: 0; z-index: 10; display: flex; justify-content: space-between; align-items: center;
  padding: 12px max(16px, calc((100vw - 1040px) / 2)); background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 19px; letter-spacing: -0.02em; text-decoration: none; }
.brand img { border-radius: 8px; }
.nav-cta { font-size: 14px; font-weight: 700; color: var(--blue); text-decoration: none; padding: 8px 14px; border-radius: 99px; background: var(--blue-weak); }

/* 버튼 */
.btn { display: inline-block; padding: 16px 24px; border-radius: 14px; background: var(--blue); color: #fff; font-weight: 700; font-size: 17px; text-decoration: none; text-align: center; }
.btn:hover { background: var(--blue-deep); }
.btn.ghost { background: var(--paper); color: var(--ink); box-shadow: inset 0 0 0 1px var(--line); }
.btn.light { background: #fff; color: var(--blue-deep); }

/* 첫 화면 */
.hero { display: grid; gap: 28px; padding: 24px 0 40px; align-items: center; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 700; color: var(--blue); background: var(--blue-weak); padding: 4px 10px; border-radius: 99px; }
.hero h1 { font-size: clamp(32px, 7vw, 52px); line-height: 1.22; letter-spacing: -0.03em; margin: 14px 0 14px; }
.hero h1 em { font-style: normal; color: var(--blue); }
.lead { font-size: 18px; color: var(--sub); margin: 0 0 24px; max-width: 30em; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-art { margin: 0; }
.hero-art img { display: block; width: 100%; height: auto; border-radius: 24px; box-shadow: 0 20px 50px rgba(60, 40, 10, .12); }
@media (min-width: 860px) {
  .hero { grid-template-columns: 1.1fr .9fr; gap: 56px; padding: 48px 0 64px; }
  .hero-art img { max-height: 78vh; width: auto; margin-left: auto; }
}

/* 섹션 */
.block { background: var(--paper); border-radius: 24px; padding: 28px 22px; margin: 0 0 16px; }
.block h2, .start h2 { font-size: clamp(22px, 4.2vw, 30px); letter-spacing: -0.02em; margin: 0 0 16px; }
@media (min-width: 860px) { .block { padding: 40px 44px; } }

.nothanks { list-style: none; padding: 0; margin: 0; display: grid; gap: 4px; }
.nothanks li { display: grid; grid-template-columns: 32px 1fr; column-gap: 12px; padding: 12px 0; border-top: 1px solid var(--line); }
.nothanks li:first-child { border-top: 0; }
.nothanks li::before { content: "✕"; grid-row: span 2; width: 32px; height: 32px; border-radius: 16px; background: var(--blue-weak); color: var(--blue); font-weight: 800; display: grid; place-items: center; }
.nothanks b { font-size: 18px; text-decoration: line-through; text-decoration-thickness: 2px; text-decoration-color: var(--blue); }
.nothanks span { color: var(--sub); }

.flow { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.flow li { display: flex; gap: 14px; align-items: flex-start; padding: 16px; border-radius: 16px; background: var(--cream); }
.flow i { flex: none; width: 32px; height: 32px; border-radius: 16px; background: var(--blue); color: #fff; font-style: normal; font-weight: 800; display: grid; place-items: center; }
.flow b { display: block; font-size: 17px; }
.flow span { color: var(--sub); font-size: 15px; }
@media (min-width: 860px) { .flow { grid-template-columns: repeat(5, 1fr); } .flow li { flex-direction: column; } }

.features { display: grid; gap: 12px; }
.features article { padding: 20px; border-radius: 18px; background: var(--cream); }
.features .ic { font-size: 28px; }
.features h3 { margin: 8px 0 6px; font-size: 18px; }
.features p { margin: 0; color: var(--sub); font-size: 15px; }
@media (min-width: 640px) { .features { grid-template-columns: 1fr 1fr; } }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips span { padding: 8px 14px; border-radius: 99px; background: var(--cream); font-weight: 600; font-size: 15px; }
.note { color: var(--muted); font-size: 14px; margin: 14px 0 0; }

.safe ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.safe li { padding: 14px 16px; border-radius: 14px; background: var(--cream); color: var(--sub); font-size: 15px; }
.safe li b { display: block; color: var(--ink); font-size: 16px; }
@media (min-width: 640px) { .safe ul { grid-template-columns: 1fr 1fr; } }

.faq details { border-top: 1px solid var(--line); padding: 14px 0; }
.faq details:first-of-type { border-top: 0; }
.faq summary { cursor: pointer; font-weight: 700; font-size: 16px; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::after { content: "+"; color: var(--muted); font-weight: 400; font-size: 20px; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq summary::-webkit-details-marker { display: none; }
.faq p { margin: 8px 0 0; color: var(--sub); }

.start { margin: 24px 0 16px; padding: 40px 24px; border-radius: 24px; text-align: center; color: #fff;
  background: linear-gradient(135deg, #4c95ff, #1b64da); }
.start p { margin: 0 0 20px; opacity: .92; }

.foot { max-width: 1040px; margin: 0 auto; padding: 24px 16px 40px; color: var(--muted); font-size: 13px; text-align: center; display: grid; gap: 6px; }
.foot a { text-decoration: none; }