/* 그라운드업벤처스 홈페이지 — 공용 스타일 (원본: jkoon-web.imweb.me 재현) */
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable.css');

:root{
  --bg:#0F1525;            /* 배경 짙은 네이비 (원본 rgb 15,21,37) */
  --bg-2:#131b30;          /* 카드/구역 살짝 밝은 배경 */
  --brand:#53E8E6;         /* 브랜드 시안 (원본 rgb 83,232,230) */
  --ink:#ffffff;
  --muted:#9aa4bf;
  --line:rgba(255,255,255,.12);
  --maxw:1000px;
  font-synthesis:none;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:'Pretendard',system-ui,-apple-system,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.accent{color:var(--brand)}
.section-heading{font-size:clamp(24px,3.4vw,32px);font-weight:800;text-align:center;margin:0 0 10px}
.section-sub{text-align:center;color:var(--muted);margin:0 0 40px}

/* ===== 헤더 ===== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(15,21,37,.85);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:70px;flex-wrap:wrap}
.logo img{height:34px;width:auto}
.nav{display:flex;gap:26px;margin:0 auto;font-weight:700;font-size:14px;letter-spacing:.02em}
.nav a{color:#e7ebf5;padding:6px 2px}
.nav a:hover{color:var(--brand)}
.social{display:flex;gap:10px}
.social a{display:grid;place-items:center;width:30px;height:30px;border:1px solid var(--line);
  border-radius:7px;color:#e7ebf5}
.social a:hover{color:var(--bg);background:var(--brand);border-color:var(--brand)}

/* ===== 히어로 ===== */
.hero{text-align:center;padding:70px 0 100px}
.hero-rocket{width:260px;height:auto;margin:0 auto 44px}
.hero-eyebrow{color:var(--brand);font-weight:700;letter-spacing:.02em;margin:0 0 6px}
.hero-sub{font-weight:800;letter-spacing:.06em;font-size:clamp(18px,3vw,26px);margin:0 0 26px}
.hero-title{font-size:clamp(34px,6vw,58px);font-weight:800;letter-spacing:-.01em;margin:0 0 30px}
.hero-desc{color:var(--muted);font-size:clamp(15px,2vw,18px);margin:0}

/* ===== OUR STORY ===== */
.story{position:relative;padding:60px 0 90px;overflow:hidden}
.watermark{font-size:clamp(48px,11vw,120px);font-weight:800;line-height:1;color:#fff;
  opacity:.05;text-align:center;margin:0 0 50px;letter-spacing:-.02em}
.story .accent{text-align:center;font-size:clamp(20px,3vw,28px);font-weight:800;margin:0 0 36px}
.story-body{text-align:center;color:#cfd6ea;margin:0 auto 22px;max-width:820px}
.story-slogan{text-align:center;color:#fff;font-weight:600;margin:56px auto 0;max-width:760px;
  font-size:clamp(16px,2.2vw,20px)}

/* 통계 */
.stats{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  margin:60px auto 0;padding:44px 20px;max-width:900px;
  border:1px solid var(--line);border-radius:20px;background:rgba(255,255,255,.02)}
.stats li{display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center}
.stat-label{color:var(--muted);font-size:15px;letter-spacing:.03em}
.stat-num{font-size:clamp(24px,3.4vw,34px);font-weight:800;color:#fff}
.stat-num em{font-style:normal;font-size:.5em;font-weight:600;margin-left:2px;color:#cfd6ea}

/* ===== WHAT WE DO ===== */
.what{padding:40px 0 80px}
.cat{margin:0 0 70px}
.cat-title{font-size:clamp(22px,3vw,30px);font-weight:800;margin:0 0 12px}
.cat-desc{color:#cfd6ea;margin:0 0 28px;max-width:760px}
.cat-note{color:var(--muted);margin:24px 0 0;font-size:15px}
.cards{display:grid;gap:20px}
.cards.two{grid-template-columns:repeat(2,1fr)}
.card-img{display:block;border-radius:12px;overflow:hidden;transition:transform .2s,box-shadow .2s}
.card-img img{width:100%;height:auto}
.card-img:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(0,0,0,.4)}
.partners{margin:28px 0 0;background:#fff;border-radius:12px;padding:10px}
.partners img{width:100%;height:auto}

/* ===== WHO WE ARE ===== */
.who{padding:60px 0 80px}
.values{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin:30px 0 0;padding:0;max-width:880px;margin-inline:auto}
.values img{width:100%;max-width:200px;height:auto;margin:0 auto;border-radius:50%}

/* ===== 뉴스 ===== */
.news{padding:60px 0 70px}
.news-card{display:block;max-width:620px;margin:0 auto;background:#eef1f6;color:#1a1f2e;
  border-radius:14px;padding:34px 34px 30px;transition:transform .2s}
.news-card:hover{transform:translateY(-3px)}
.news-crumb{color:#8a90a0;font-size:13px;margin:0 0 16px}
.news-title{font-size:clamp(20px,3vw,28px);font-weight:800;margin:0 0 14px;line-height:1.35}
.news-lead{color:#4a5163;border-left:3px solid #1a1f2e;padding-left:12px;margin:0 0 22px}
.news-meta{color:#8a90a0;font-size:13px;margin:0}

/* 뉴스 목록/상세 */
.news-list{display:grid;gap:18px;max-width:660px;margin:0 auto}
.news-more{text-align:center;margin:24px 0 0}
.news-more a{color:var(--brand);font-weight:700;font-size:15px}
.news-empty{text-align:center;color:var(--muted);padding:40px 0}
.article-section{padding:70px 0 90px}
.wrap.narrow{max-width:760px}
.article-title{font-size:clamp(24px,4vw,36px);font-weight:800;line-height:1.35;margin:14px 0 12px}
.article-sub{color:var(--brand);font-weight:600;margin:0 0 18px}
.article-thumb{width:100%;border-radius:12px;margin:24px 0}
.article-body{color:#cfd6ea;line-height:1.9;margin:26px 0 0}
.article-body p{margin:0 0 18px}
.article-back{margin:40px 0 0}
.article-back a{color:var(--brand);font-weight:700}

/* ===== 영상 ===== */
.videos{padding:20px 0 70px}
.video-grid{display:grid;grid-template-columns:1fr;gap:20px;max-width:620px;margin:0 auto}
.video{display:block;border-radius:12px;overflow:hidden;border:1px solid var(--line)}

/* ===== CONTACT ===== */
.contact{padding:70px 0 90px;border-top:1px solid var(--line)}
.contact-lead{text-align:center;font-size:clamp(20px,3vw,28px);font-weight:800;margin:0 0 40px;line-height:1.5}
.contact-title{display:flex;align-items:center;justify-content:center;gap:8px;
  color:var(--brand);font-weight:800;font-size:clamp(22px,3.4vw,32px);margin:0 0 14px}
.contact-title .bolt{width:26px;height:26px}
.contact-guide{text-align:center;color:var(--muted);margin:0 0 40px}
.contact-form{max-width:640px;margin:0 auto}
.contact-form .row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;margin:0 0 12px}
.contact-form .row:nth-of-type(2){grid-template-columns:1fr 1fr}
.contact-form input,.contact-form textarea{width:100%;background:rgba(255,255,255,.04);
  border:1px solid var(--line);border-radius:8px;padding:14px 16px;color:#fff;font:inherit}
.contact-form input::placeholder,.contact-form textarea::placeholder{color:#6d768f}
.contact-form textarea{margin:0 0 16px;resize:vertical}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--brand)}
.btn{display:inline-block;background:var(--brand);color:#0b1020;font-weight:800;
  padding:15px 40px;border-radius:999px;font-size:16px;border:0;cursor:pointer}
.btn:hover{filter:brightness(1.05)}
.form-note{color:var(--muted);font-size:13px;margin:14px 0 0}
.contact-direct{display:flex;gap:20px;justify-content:center;margin:36px 0 0;flex-wrap:wrap}
.contact-direct a{font-weight:800;font-size:clamp(18px,2.6vw,24px);color:var(--brand)}
.offices{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:640px;margin:50px auto 0}
.offices h4{margin:0 0 8px;font-size:15px;color:#fff}
.offices p{margin:0;color:var(--muted);font-size:14px;line-height:1.6}

/* ===== 푸터 ===== */
.site-footer{border-top:1px solid var(--line);padding:50px 0 60px}
.footer-logo{height:32px;width:auto;margin:0 0 22px;opacity:.9}
.footer-company{color:var(--muted);font-size:13px;line-height:1.9;margin:0 0 18px}
.footer-links{margin:0 0 18px}
.footer-links a{color:#cfd6ea;font-size:13px;font-weight:600}
.footer-links a:hover{color:var(--brand)}
.footer-copy{color:#5b647d;font-size:12px;margin:0}

/* ===== /vat 부가세 계산기 (라이트 테마) ===== */
.vat-page{background:#fff;color:#111827}
.vat-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);
  backdrop-filter:blur(8px);border-bottom:1px solid #e5e7eb}
.vat-header .wrap{display:flex;align-items:center;height:60px;max-width:1200px}
.vat-home{font-weight:800;color:#0b57d0;font-size:16px}
.vat-home:hover{opacity:.8}
.vat-cta{margin-left:auto;background:#0b57d0;color:#fff;font-weight:700;
  padding:10px 22px;border-radius:999px;font-size:14px}
.vat-cta:hover{filter:brightness(1.06)}
.vat-slides{display:block}
.vat-slide{display:block;line-height:0}
.vat-slide img{width:100%;height:auto;display:block;margin:0 auto;max-width:1920px}
.vat-bottom{text-align:center;padding:60px 20px 80px;background:#f4f6fb}
.vat-bottom p{margin:0 0 22px;font-size:clamp(18px,2.6vw,24px);font-weight:700;color:#111827}
.vat-cta.big{display:inline-block;margin:0;padding:16px 44px;font-size:16px}

/* ===== 반응형 ===== */
@media(max-width:768px){
  .nav{gap:16px;font-size:12px;order:3;width:100%;margin:0;justify-content:center;padding-top:6px}
  .header-inner{min-height:auto;padding:12px 20px}
  .social{margin-left:auto}
  .stats{grid-template-columns:repeat(2,1fr);gap:30px 16px}
  .cards.two{grid-template-columns:1fr}
  .values{grid-template-columns:repeat(2,1fr)}
  .contact-form .row,.contact-form .row:nth-of-type(2){grid-template-columns:1fr}
  .offices{grid-template-columns:1fr}
}