/* 소개·로그인·가입 페이지 공용 */
:root { --ink:#22293a; --ink-2:#4a5263; --ink-3:#8a93a6; --line:#e7ebf3; --bg:#f6f8fc; --accent:#3f6fe8; --accent-d:#2f57c9; --mint:#dcf3e8; --mint-d:#2f9e78; --sky:#dfeeff; --peach:#ffe6d6; --lav:#ece6ff; }
* { box-sizing: border-box; }
body { margin: 0; font-family: Pretendard, -apple-system, "Apple SD Gothic Neo", sans-serif; color: var(--ink); background: #fff; word-break: keep-all; line-height: 1.6; }
a { color: var(--accent-d); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.gnb { position: sticky; top: 0; background: rgba(255,255,255,.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); z-index: 10; }
.gnb .wrap { display: flex; align-items: center; justify-content: space-between; height: 62px; gap: 12px; }
.logo { font-size: 18px; color: var(--ink); text-decoration: none; white-space: nowrap; }
.gnb nav { display: flex; align-items: center; gap: 18px; }
.gnb nav a.txt { color: var(--ink-2); text-decoration: none; font-weight: 600; font-size: 15px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 11px 20px; border-radius: 12px; font-weight: 700; font-size: 15px; text-decoration: none; border: 0; cursor: pointer; background: var(--accent); color: #fff; }
.btn:hover { background: var(--accent-d); }
.btn.ghost { background: #fff; color: var(--ink); box-shadow: inset 0 0 0 1px var(--line); }
.btn.sm { padding: 8px 14px; font-size: 14px; border-radius: 10px; }
.hero { background: linear-gradient(180deg, #eef4ff 0%, #fff 100%); padding: 72px 0 64px; text-align: center; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 700; color: var(--accent-d); background: #fff; border: 1px solid #d6e2ff; padding: 5px 12px; border-radius: 999px; }
.hero h1 { font-size: clamp(30px, 5vw, 48px); line-height: 1.25; margin: 18px 0 14px; letter-spacing: -0.02em; }
.hero p.lead { font-size: 17px; color: var(--ink-2); margin: 0 auto 26px; max-width: 620px; }
.hero .cta { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.free { margin-top: 18px; font-size: 14px; color: var(--ink-3); }
section.block { padding: 64px 0; }
section.block.alt { background: var(--bg); }
.sec-head { text-align: center; margin-bottom: 32px; }
.sec-head small { color: var(--accent-d); font-weight: 700; font-size: 13px; }
.sec-head h2 { font-size: clamp(24px, 3.4vw, 32px); margin: 6px 0 8px; letter-spacing: -0.01em; }
.sec-head p { color: var(--ink-2); margin: 0; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 860px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .cards { grid-template-columns: 1fr; } }
.card { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 22px; }
.card .ic { font-size: 28px; width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 12px; }
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--ink-2); font-size: 15px; }
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; counter-reset: s; }
.step { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 22px; position: relative; }
.step b.n { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 999px; background: var(--accent); color: #fff; font-size: 14px; margin-bottom: 10px; }
.step h3 { margin: 0 0 6px; font-size: 17px; }
.step p { margin: 0; color: var(--ink-2); font-size: 15px; }
.closing { text-align: center; padding: 64px 0; }
.closing h2 { font-size: clamp(22px, 3vw, 30px); margin: 0 0 18px; }
footer { border-top: 1px solid var(--line); padding: 26px 0 40px; color: var(--ink-3); font-size: 13px; }
footer .wrap { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
/* 로그인·가입 */
.auth { min-height: calc(100vh - 62px); display: grid; place-items: center; background: linear-gradient(180deg, #eef4ff 0%, #fff 100%); padding: 24px 16px; }
.auth form { width: 100%; max-width: 400px; background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 28px; box-shadow: 0 10px 30px rgba(60,80,130,.08); }
.auth h1 { font-size: 22px; margin: 0 0 4px; }
.auth p.sub { margin: 0 0 18px; color: var(--ink-2); font-size: 14px; }
.auth label { display: block; font-size: 13px; font-weight: 600; color: var(--ink-2); margin: 12px 0 5px; }
.auth input { width: 100%; padding: 11px 12px; border: 1px solid var(--line); border-radius: 10px; font: inherit; font-size: 15px; }
.auth input:focus { outline: 2px solid #c9d8ff; border-color: var(--accent); }
.auth .btn { width: 100%; margin-top: 18px; padding: 12px; }
.auth .err { color: #d9475a; font-size: 13px; min-height: 18px; margin-top: 10px; }
.auth .alt { text-align: center; font-size: 14px; margin-top: 14px; color: var(--ink-2); }
.auth .hint { font-size: 12.5px; color: var(--ink-3); margin-top: 4px; }
@media (max-width: 640px) { .gnb nav a.txt { display: none; } .hero { padding: 52px 0 44px; } section.block { padding: 48px 0; } }