/* 큰나무 랜딩 — 모바일 우선, 단정한 단일 톤 */
:root{
  --ink:#16211c; --ink-2:#4a5a52; --line:#dfe6e2; --bg:#fff; --soft:#f4f7f5;
  --brand:#1f6f4a; --brand-d:#17563a; --warn:#b4530a;
  --radius:10px; --max:960px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:"Malgun Gothic","맑은 고딕","Apple SD Gothic Neo","Noto Sans KR",system-ui,sans-serif;
  font-size:16px; line-height:1.65; padding-bottom:72px;
}
a{color:var(--brand-d)}
main{max-width:var(--max); margin:0 auto; padding:0 18px}
h1{font-size:1.9rem; line-height:1.3; margin:.2em 0 .4em; letter-spacing:-.02em}
h2{font-size:1.3rem; margin:2rem 0 .6rem}
h3{font-size:1.05rem; margin:.2rem 0 .4rem}
.ph{color:#8d9a94; font-style:italic; font-size:.9rem}

/* 상단바 */
.topbar{
  display:flex; align-items:center; gap:12px; flex-wrap:wrap;
  max-width:var(--max); margin:0 auto; padding:12px 18px; border-bottom:1px solid var(--line);
}
.topbar .brand{font-weight:700; color:var(--ink); text-decoration:none; margin-right:auto; font-size:1.02rem}
.topbar nav{display:flex; gap:14px; font-size:.92rem}
.topbar nav a{color:var(--ink-2); text-decoration:none}
.topbar nav a:hover{color:var(--brand-d)}

/* CTA */
.cta{
  display:inline-block; background:var(--brand); color:#fff; text-decoration:none;
  padding:13px 22px; border-radius:var(--radius); font-weight:700; border:0; cursor:pointer;
  font-size:1rem; font-family:inherit;
}
.cta:hover{background:var(--brand-d)}
.cta-sm{padding:8px 13px; font-size:.86rem}
.cta-lg{padding:16px 26px; font-size:1.08rem; width:100%; text-align:center}

/* 히어로 */
.hero{padding:36px 0 28px; text-align:left}
.hero .eyebrow{color:var(--brand); font-weight:700; font-size:.85rem; letter-spacing:.06em; margin:0}
.hero h1{font-size:2.15rem}
.hero .lead{font-size:1.06rem; color:var(--ink-2); max-width:34em}
.hero .sub{color:#8d9a94; font-size:.87rem; margin-top:10px}

.lead{font-size:1.02rem; color:var(--ink-2)}

/* 가치 3줄 */
.value{display:grid; gap:14px; margin:8px 0 28px}
.value .v{background:var(--soft); border:1px solid var(--line); border-radius:var(--radius); padding:16px 18px}
.value .v p{margin:.2rem 0 0; color:var(--ink-2); font-size:.95rem}

/* 데모 */
.demo{margin:28px 0; text-align:center}
.video-slot{
  border:2px dashed var(--line); border-radius:var(--radius); background:var(--soft);
  aspect-ratio:16/9; display:flex; align-items:center; justify-content:center;
  color:#8d9a94; font-size:.92rem; margin-bottom:16px;
}
.price-teaser{background:var(--soft); border-radius:var(--radius); padding:18px; margin:24px 0}

/* 페이지 머리 */
.page-head{padding:28px 0 10px; border-bottom:1px solid var(--line); margin-bottom:18px}

/* 가격 */
.plans{display:grid; gap:16px; margin-bottom:28px}
.plan{border:1px solid var(--line); border-radius:var(--radius); padding:20px}
.plan-main{border-color:var(--brand); border-width:2px}
.plan .amount{font-size:1.9rem; font-weight:700; margin:.2rem 0 0}
.plan .per{color:var(--ink-2); font-size:.88rem; margin:0 0 .6rem}
.plan ul{padding-left:1.1em; color:var(--ink-2); font-size:.95rem}
.plan .cta{width:100%; text-align:center; margin-top:10px}
.notes ul{color:var(--ink-2); font-size:.95rem}

/* 폼 */
.formwrap{max-width:520px; margin:0 auto 32px}
.formwrap label{display:block; margin-bottom:14px; font-weight:600; font-size:.95rem}
.formwrap input, .formwrap textarea{
  display:block; width:100%; margin-top:6px; padding:12px; font-size:1rem; font-family:inherit;
  border:1px solid #c8d3cd; border-radius:var(--radius); background:#fff; color:var(--ink);
}
.formwrap input:focus, .formwrap textarea:focus{outline:2px solid var(--brand); border-color:var(--brand)}
.req{color:#c0392b}
.opt{color:#8d9a94; font-weight:400}
.err{display:block; color:#c0392b; font-style:normal; font-size:.85rem; margin-top:4px; font-weight:400}
.err-top{background:#fdecea; border:1px solid #f5c6c0; color:#8e2a1f; padding:10px 12px; border-radius:var(--radius)}
.agree{font-size:.83rem; color:#8d9a94; margin-top:12px}
.hp{position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden}

/* 완료 */
.done{padding:48px 0; text-align:center}
.done .next{list-style:none; padding:0; color:var(--ink-2); font-size:.95rem}
.done .cta{margin-top:18px}

/* 자료실 · 약관 */
.resources ul{list-style:none; padding:0}
.resources li{border-bottom:1px solid var(--line); padding:14px 0; display:flex; flex-wrap:wrap; gap:8px; align-items:baseline}
.resources li a{font-weight:600}
.legal h2{font-size:1.05rem; margin:1.4rem 0 .3rem}
.legal p{color:var(--ink-2); font-size:.95rem; margin:.2rem 0}
table.mini{border-collapse:collapse; width:100%; font-size:.88rem; margin:.6rem 0}
table.mini th, table.mini td{border:1px solid var(--line); padding:7px 9px; text-align:left; vertical-align:top}
table.mini th{background:var(--soft)}

/* 바닥 */
footer{border-top:1px solid var(--line); margin-top:36px}
.foot-cta{background:var(--soft); text-align:center; padding:32px 18px}
.foot-cta p{margin:0 0 14px; font-weight:600}
.foot-meta{max-width:var(--max); margin:0 auto; padding:18px; color:#8d9a94; font-size:.83rem; text-align:center}
.foot-meta p{margin:.2rem 0}

/* 모바일 하단 고정 CTA */
.sticky-cta{
  position:fixed; left:0; right:0; bottom:0; z-index:50;
  background:var(--brand); color:#fff; text-align:center; text-decoration:none;
  padding:16px; font-weight:700; box-shadow:0 -2px 10px rgba(0,0,0,.12);
}
.sticky-cta:hover{background:var(--brand-d)}

@media (min-width:720px){
  .value{grid-template-columns:repeat(3,1fr)}
  .plans{grid-template-columns:repeat(3,1fr); align-items:start}
  .hero h1{font-size:2.6rem}
  .cta-lg{width:auto}
  .sticky-cta{display:none}
  body{padding-bottom:0}
}