/* 소개·404 페이지 공통(2026-10-22) — 게임과 같은 어두운 바탕·라임 글씨 */
:root { color-scheme: dark; --bg: #0D0E11; --card: #16181D; --card2: #1C1F25; --line: #2A2E37; --text: #F3F0E8; --sub: #C8C9CE; --mute: #8A8D95; --accent: #C6F432; --gold: #F5D27A; --up: #FF5C5C; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: 'IBM Plex Sans KR', -apple-system, 'Apple SD Gothic Neo', sans-serif; line-height: 1.65; word-break: keep-all; -webkit-text-size-adjust: 100%; }
a { color: var(--accent); }
.site { max-width: 720px; margin: 0 auto; padding: 18px 16px 120px; }
.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: 13px; color: var(--mute); }
.crumbs a { color: var(--sub); text-decoration: none; }
.crumbs b { color: var(--text); font-weight: 500; }
.hero { margin: 14px 0 8px; }
.hero-art { display: block; width: 100%; height: auto; border-radius: 16px; border: 1px solid var(--line); }
.kicker { margin: 18px 0 0; font-size: 13px; font-weight: 700; letter-spacing: 0.08em; color: var(--accent); }
h1 { font-family: 'Black Han Sans', sans-serif; font-weight: 400; font-size: 48px; line-height: 1.1; margin: 4px 0 10px; }
h1 em { font-style: normal; color: var(--accent); }
.lead { font-size: 16px; color: var(--sub); margin: 0 0 16px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 8px; }
.cta { flex: 1 1 200px; display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 56px; padding: 8px 16px; border-radius: 14px; background: var(--accent); color: #0D0E11; font-weight: 700; font-size: 17px; text-decoration: none; }
.cta small { font-size: 12px; font-weight: 500; opacity: 0.75; }
.cta.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); font-size: 15px; }
section { margin-top: 36px; }
h2 { font-size: 20px; margin: 0 0 12px; }
.steps { list-style: none; padding: 0; margin: 0; counter-reset: s; display: grid; gap: 10px; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 28px minmax(0, 1fr); column-gap: 10px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; }
.steps li::before { content: counter(s); grid-row: span 2; width: 26px; height: 26px; border-radius: 50%; background: var(--accent); color: #0D0E11; font-family: 'IBM Plex Mono', monospace; font-weight: 600; font-size: 13px; display: flex; align-items: center; justify-content: center; }
.steps b { font-size: 16px; }
.steps span { font-size: 14px; color: var(--sub); }
.note { font-size: 13px; color: var(--mute); margin: -4px 0 12px; }
.cases { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
.case { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px; display: flex; flex-direction: column; gap: 6px; }
.case.best { border-color: var(--accent); }
.case b { font-size: 14px; }
.case p { margin: 0; font-size: 14px; color: var(--sub); }
.case em { font-style: normal; font-family: 'IBM Plex Mono', monospace; font-weight: 600; font-size: 20px; color: var(--text); }
.case small { font-size: 12px; color: var(--mute); }
.tag { align-self: flex-start; display: inline-block; font-size: 12px; font-weight: 700; color: #0D0E11; background: var(--gold); border-radius: 6px; padding: 1px 8px; }
.tag.real { background: var(--accent); }
.live { margin-top: 10px; background: var(--card2); border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; }
.live p { margin: 6px 0 0; font-size: 14px; color: var(--sub); }
.rank { margin: 8px 0 0; padding: 0; list-style: none; display: grid; gap: 4px; }
.rank li { display: flex; justify-content: space-between; gap: 8px; font-size: 14px; }
.rank em { font-style: normal; font-family: 'IBM Plex Mono', monospace; color: var(--accent); }
.faq { display: grid; gap: 8px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; }
.faq summary { cursor: pointer; font-weight: 700; font-size: 15px; list-style: none; display: flex; justify-content: space-between; gap: 8px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; color: var(--accent); font-family: 'IBM Plex Mono', monospace; }
.faq details[open] summary::after { content: '−'; }
.faq p { margin: 8px 0 0; font-size: 14px; color: var(--sub); }
.contact { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; }
.contact p { margin: 4px 0; font-size: 15px; color: var(--sub); }
.contact b { color: var(--text); margin-right: 6px; }
.answer-time { color: var(--accent) !important; font-weight: 700; }
.foot { margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--line); }
.foot nav { display: flex; flex-wrap: wrap; gap: 6px 16px; }
.foot nav a { color: var(--sub); font-size: 14px; text-decoration: none; }
.foot nav a[aria-current] { color: var(--text); }
.foot p { font-size: 12px; color: var(--mute); }
.sticky-cta { position: fixed; left: 16px; right: 16px; bottom: calc(12px + env(safe-area-inset-bottom)); z-index: 10; display: none; align-items: center; justify-content: center; gap: 8px; min-height: 54px; border-radius: 16px; background: var(--accent); color: #0D0E11; font-weight: 700; font-size: 17px; text-decoration: none; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5); }
.sticky-cta small { font-size: 12px; font-weight: 500; opacity: 0.75; }
@media (max-width: 760px) { .sticky-cta { display: flex; } h1 { font-size: 42px; } }
/* 404 */
.nf { text-align: center; padding-top: 12vh; }
.nf .code { font-family: 'IBM Plex Mono', monospace; font-size: 15px; color: var(--mute); }
.nf h1 { font-size: 34px; }
.nf .cta-row { max-width: 420px; margin: 20px auto 0; }