/* NEXTGROW WITH AI — 광고사업부 목적 페이지(/ad) v1.0
   원고: 조은결 R3 인계본(2026-10-09) · 첫 화면 치수: 문서영 합본 v5(통과)
   색 세 가지: 바탕 흰색, 글자 먹색, 강조색 짙은 파랑(문서영 10-04 권고 A) */
@font-face{font-family:"NG Sans KR";font-weight:400;font-style:normal;font-display:swap;src:url(/assets/fonts/ngsans-kr-400.woff2?v=2) format("woff2")}
@font-face{font-family:"NG Sans KR";font-weight:600;font-style:normal;font-display:swap;src:url(/assets/fonts/ngsans-kr-600.woff2?v=2) format("woff2")}
@font-face{font-family:"NG Sans KR";font-weight:700;font-style:normal;font-display:swap;src:url(/assets/fonts/ngsans-kr-700.woff2?v=2) format("woff2")}
@font-face{font-family:"NG Sans KR";font-weight:800;font-style:normal;font-display:swap;src:url(/assets/fonts/ngsans-kr-800.woff2?v=2) format("woff2")}
:root{
  --bg:#ffffff;--ink:#1a1a1a;--ink-70:rgba(26,26,26,.70);--ink-55:rgba(26,26,26,.55);
  --line:#e6e8eb;--soft:#f6f7f9;--accent:#1d4ed8;--accent-d:#1a43bb;--error:#c2362b;--ok:#17734f;
  --inner:1200px;--pad:clamp(20px,5vw,40px);--wrap:calc(var(--inner) + 2*var(--pad));
  --font:"NG Sans KR","Malgun Gothic","Apple SD Gothic Neo","Noto Sans KR",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:24px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;word-break:keep-all;overflow-wrap:break-word;padding-bottom:104px}
a{color:inherit}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.skip{position:absolute;left:12px;top:-60px;z-index:50;background:var(--ink);color:#fff;padding:10px 16px;border-radius:8px;text-decoration:none}
.skip:focus{top:12px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.nb{white-space:nowrap}

/* 글자 로고 — 윗선 40, 안쪽 폭 왼쪽 끝 */
.top{max-width:var(--wrap);margin:0 auto;padding:40px var(--pad) 0}
.wordmark{display:inline-block;font-size:22px;line-height:28px;font-weight:700;letter-spacing:.06em;text-decoration:none}

/* ① 첫 화면 두 줄 — 머리 72 · 받침 28, 사이 32 */
.hero{max-width:var(--wrap);margin:0 auto;padding:120px var(--pad) 112px;text-align:center}
.hero h1{margin:0;font-size:clamp(32px,5.2vw,72px);line-height:1.25;font-weight:800;letter-spacing:-.02em}
.hero-sub{margin:32px auto 0;max-width:30em;font-size:clamp(16px,1.9vw,28px);line-height:1.5;color:var(--ink-70);font-weight:400}

/* ② 상품과 가격 */
.group{max-width:var(--wrap);margin:0 auto;padding:0 clamp(20px,5vw,40px) 96px}
.group-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 24px;border-top:2px solid var(--ink);padding-top:28px;margin-bottom:28px}
.group h2{margin:0;font-size:clamp(24px,2.4vw,32px);font-weight:800;letter-spacing:-.01em}
.group-lead{margin:0;color:var(--ink-70);font-size:16px}
.cards{display:grid;gap:16px}
.cards-3{grid-template-columns:repeat(3,1fr)}
.cards-4{grid-template-columns:repeat(4,1fr)}
.card{border:1px solid var(--line);border-radius:12px;padding:24px 22px 22px;background:#fff;display:flex;flex-direction:column}
.tier{margin:0 0 10px;font-size:16px;font-weight:700}
.price{margin:0;font-size:16px;color:var(--ink-70)}
.price strong{font-size:34px;line-height:1.1;font-weight:800;color:var(--ink);letter-spacing:-.02em;margin-right:2px}
.what{margin:10px 0 18px;font-size:15px;color:var(--ink-70);min-height:2.6em}
.card dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:9px 14px;font-size:14.5px;line-height:1.5;border-top:1px solid var(--line);padding-top:16px}
.card dt{color:var(--ink-55);white-space:nowrap}
.card dd{margin:0}
.card dt.due,.card dd.due{font-weight:700;color:var(--ink)}
.ask{margin:22px 0 0;font-size:15.5px;color:var(--ink-70);display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.chips{display:inline-flex;flex-wrap:wrap;gap:8px}
.chips span{border:1px solid var(--line);background:var(--soft);border-radius:999px;padding:4px 12px;font-size:14px;color:var(--ink)}
.tax{margin:14px 0 0;font-size:15.5px;font-weight:600}

/* ③ 납기와 조건 */
.terms{max-width:var(--wrap);margin:0 auto;padding:0 clamp(20px,5vw,40px) 96px}
.terms p{margin:0;background:var(--soft);border-radius:12px;padding:24px 26px;font-size:15.5px;line-height:1.75;color:var(--ink-70)}

/* ⑤ 문의 양식 */
.ask-form{max-width:var(--wrap);margin:0 auto;padding:0 clamp(20px,5vw,40px) 72px}
.ask-form h2{margin:0;font-size:clamp(24px,2.4vw,32px);font-weight:800;border-top:2px solid var(--ink);padding-top:28px}
.ask-form .lead{margin:10px 0 28px;color:var(--ink-70)}
.form{display:grid;grid-template-columns:1fr 1fr;gap:18px 20px;max-width:820px}
.field{display:flex;flex-direction:column;gap:6px}
.field.span-2,.consent,.field-error.full,.status,.form-foot,.form noscript{grid-column:1/-1}
.field label{font-size:14.5px;font-weight:600}
.req{color:var(--accent)}
.field input,.field select,.field textarea{font:inherit;font-size:16px;color:var(--ink);background:#fff;border:1px solid #cfd3d8;border-radius:8px;padding:12px 14px;min-height:48px;width:100%}
.field textarea{resize:vertical;min-height:96px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(29,78,216,.18)}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--error)}
.field-error{font-size:13.5px;color:var(--error);min-height:0}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink-70)}
.consent input{width:20px;height:20px;margin:2px 0 0;flex:none;accent-color:var(--accent)}
.consent.invalid label{color:var(--error)}
.status{border-radius:8px;padding:14px 16px;font-size:15px}
.status.ok{background:#e9f6ef;color:var(--ok)}
.status.err{background:#fcecea;color:var(--error)}
.status.info{background:var(--soft)}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}
.small{font-size:13.5px;color:var(--ink-55)}
.btn-accent{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:56px;padding:0 32px;border:0;border-radius:8px;background:var(--accent);color:#fff;font:inherit;font-size:18px;font-weight:700;text-decoration:none;cursor:pointer;white-space:nowrap;transition:background .2s}
.btn-accent:hover{background:var(--accent-d)}
.btn-accent:disabled{opacity:.6;cursor:default}
.spinner{display:none;width:16px;height:16px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}
.is-loading .spinner{display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}

/* ⑥ 메인홈피 링크 · 바닥글 */
.to-home{max-width:var(--wrap);margin:0 auto;padding:8px clamp(20px,5vw,40px) 40px;font-size:14px;color:var(--ink-55)}
.to-home a{text-decoration:underline;text-underline-offset:3px}
.foot{border-top:1px solid var(--line);padding:24px clamp(20px,5vw,40px) 28px;font-size:13px;color:var(--ink-55)}
.foot p{max-width:var(--inner);margin:0 auto 6px;display:flex;flex-wrap:wrap;gap:4px 18px}
.foot a{text-decoration:none}
.foot a:hover{text-decoration:underline}

/* ⑤ 화면 하단 고정 버튼 1개 */
.dock{position:fixed;left:0;right:0;bottom:0;z-index:40;background:rgba(255,255,255,.96);border-top:1px solid var(--line);padding:12px clamp(20px,5vw,40px) calc(12px + env(safe-area-inset-bottom));display:flex;align-items:center;justify-content:center;gap:24px;transition:transform .25s,opacity .25s}
.dock p{margin:0;font-size:15px;color:var(--ink-70)}
.dock .btn-accent{min-height:56px;min-width:240px}
.dock.is-hidden{transform:translateY(110%);opacity:0;pointer-events:none}

@media (max-width:1100px){.cards-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:860px){
  .cards-3{grid-template-columns:1fr}
  .what{min-height:0}
}
@media (max-width:640px){
  body{font-size:16px;padding-bottom:96px}
  .top{padding-top:24px}
  .wordmark{font-size:16px;line-height:22px}
  .hero{padding:64px 20px 64px}
  .hero h1{font-size:32px;line-height:1.3}
  .hero-sub{margin-top:16px;font-size:16px}
  .hero-sub .nb{white-space:normal}
  .cards-4{grid-template-columns:1fr}
  .group,.terms{padding-bottom:64px}
  .price strong{font-size:30px}
  .form{grid-template-columns:1fr}
  .dock{gap:0;padding-top:10px}
  .dock p{display:none}
  .dock .btn-accent{width:100%;min-height:52px}
  .form-foot .btn-accent{width:100%}
}

/* ④ 견본 — 상품 카드 바로 아래, 눌러서 재생(자동 재생 없음) */
.samples{display:grid;gap:16px;margin-top:20px}
.samples-2{grid-template-columns:repeat(2,1fr)}
.samples-4{grid-template-columns:repeat(4,1fr)}
.samples figure{margin:0}
.samples video{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;background:#0b0f14;border-radius:12px}
.samples-4 video{aspect-ratio:9/16}
.samples figcaption{margin-top:10px;display:flex;flex-direction:column;gap:2px;font-size:14.5px;line-height:1.45}
.samples figcaption strong{font-weight:700}
.samples figcaption span{color:var(--ink-55);font-size:13.5px}
.note{margin:14px 0 0;font-size:13.5px;color:var(--ink-55)}
@media (max-width:860px){.samples-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.samples-2{grid-template-columns:1fr}}