/* acvi — 필요한 것만.
   글꼴 하나(Pretendard), 흑백 + 주황 한 점(로고 · 파형 · 대상 표시에만). */

:root{
  --bg:#FFFFFF;
  --ink:#1D1D1F;
  --gray:#6E6E73;
  --tile:#F5F5F7;
  --line:#D2D2D7;
  --black:#000000;
  --on-black:#F5F5F7;
  --accent:#FF5B2E;  /* 로고 · 파형에만 */
  --accent-ink:#C2410C;
  --font:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR","Noto Sans CJK KR",system-ui,sans-serif;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:64px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.47;letter-spacing:-.01em;word-break:keep-all;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
h1,h2,h3,p,dl,dd,figure{margin:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
:focus-visible{outline:2px solid var(--accent-ink);outline-offset:3px;border-radius:6px}

.skip{position:absolute;left:-9999px;top:8px}
.skip:focus{left:12px;z-index:100;background:var(--ink);color:#fff;padding:10px 16px;border-radius:10px}

/* ---------- 상단 메뉴 ---------- */
.gnav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(0,0,0,.06)}
.gnav-in{max-width:1024px;margin:0 auto;padding:0 22px;height:52px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:8px;min-height:44px;font-size:19px;font-weight:700;letter-spacing:-.03em}
.logo svg{width:28px;height:14px;flex:none}
.links{display:flex;gap:2px;margin-right:-12px}
.links a{display:inline-flex;align-items:center;min-height:44px;padding:0 12px;font-size:14px;color:var(--ink);opacity:.82}
.links a:hover{opacity:1}

/* ---------- 홈: 첫 화면 ---------- */
.hero{padding:104px 0 0;text-align:center;overflow:hidden}
.wordmark{font-size:clamp(96px,20vw,208px);font-weight:700;letter-spacing:-.065em;line-height:.88;padding:0 22px}
.tagline{margin-top:24px;text-wrap:balance;padding:0 22px;font-size:clamp(22px,3vw,32px);font-weight:600;letter-spacing:-.025em;line-height:1.2}
.wave{margin-top:64px;height:clamp(96px,13vw,176px)}
.wave svg{display:block;width:100%;height:100%}
.wave path{fill:none;stroke:var(--accent);stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round;vector-effect:non-scaling-stroke}
@media (prefers-reduced-motion:no-preference){
  .wave{animation:record 2.6s cubic-bezier(.25,.6,.2,1) .25s both}
  @keyframes record{from{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0 0 0 0)}}
}

/* ---------- 홈: 프로젝트 타일 — 모두 같은 모양 ---------- */
.tiles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:56px 12px 12px}
.tile{background:var(--tile);color:var(--ink);min-height:400px;padding:64px 32px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
.tile .award{font-size:17px;font-weight:600;letter-spacing:-.015em;color:var(--gray)}
.tile h2{margin-top:8px;text-wrap:balance;font-size:clamp(36px,4.2vw,52px);font-weight:700;letter-spacing:-.04em;line-height:1.05}
.tile .desc{margin-top:12px;max-width:22em;text-wrap:balance;font-size:clamp(19px,1.9vw,24px);font-weight:500;letter-spacing:-.02em;line-height:1.3}
.tile .shot{margin-top:40px;width:100%;max-width:880px}

.pill{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 22px;border-radius:980px;font-size:17px;font-weight:500;letter-spacing:-.01em;background:var(--ink);color:#fff;transition:opacity .2s}
.pill:hover{opacity:.86}
.pill.light{background:#fff;color:var(--ink)}
.pill.line{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}

/* ---------- 홈: 연락 ---------- */
.contact{padding:136px 22px 144px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:12px}
.contact .what{font-size:17px;color:var(--gray)}
.mail{font-size:clamp(34px,5.4vw,60px);font-weight:700;letter-spacing:-.04em;line-height:1.1;transition:color .2s}
.mail:hover{color:var(--accent-ink)}
.sub-link{display:inline-flex;align-items:center;min-height:44px;font-size:17px;color:var(--gray)}
.sub-link:hover{color:var(--ink)}

/* ---------- 하단 ---------- */
.foot{border-top:1px solid var(--line)}
.foot-in{max-width:1024px;margin:0 auto;padding:18px 22px 32px;display:flex;justify-content:space-between;gap:16px;font-size:12px;color:var(--gray)}

/* ---------- 프로젝트 페이지 ---------- */
.phero{padding:96px 22px 0;text-align:center;display:flex;flex-direction:column;align-items:center}
.phero .award{font-size:19px;font-weight:600;letter-spacing:-.015em;color:var(--gray)}
.phero h1{margin-top:10px;font-size:clamp(80px,15vw,168px);font-weight:700;letter-spacing:-.065em;line-height:.92}
.phero .desc{margin-top:22px;max-width:22em;text-wrap:balance;font-size:clamp(21px,2.6vw,28px);font-weight:600;letter-spacing:-.025em;line-height:1.3}
.phero .shot{margin-top:56px;width:100%;max-width:1024px}

.highlights{max-width:1024px;margin:0 auto;padding:96px 22px 104px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;text-align:center}
.highlights b{display:block;font-size:clamp(40px,5vw,56px);font-weight:700;letter-spacing:-.045em;line-height:1.05}
.highlights span{display:block;margin-top:10px;font-size:15px;line-height:1.4;color:var(--gray)}

.specs{max-width:1024px;margin:0 auto;padding:0 22px 40px}
.spec{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,3fr);gap:24px;padding:40px 0;border-top:1px solid var(--line)}
.spec h2{font-size:21px;font-weight:600;letter-spacing:-.02em;line-height:1.3}
.kv{display:grid;grid-template-columns:128px minmax(0,1fr);gap:14px 24px;align-items:baseline}
.kv dt{font-size:15px;color:var(--gray)}
.kv dd{font-size:17px;line-height:1.5}
.kv a{text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:4px;transition:text-decoration-color .2s}
.kv a:hover{text-decoration-color:currentColor}

.cert{display:block;width:100%;max-width:320px;transition:opacity .2s}
.cert:hover{opacity:.86}
.cert img{width:100%;border:1px solid var(--line)}

.back{text-align:center;padding:40px 22px 120px}

/* ---------- 좁은 화면 ---------- */
@media (max-width:734px){
  .hero{padding-top:72px}
  .wave{margin-top:48px}
  .tiles{grid-template-columns:minmax(0,1fr);padding-top:40px}
  .tile{min-height:300px;padding:56px 24px}
  .contact{padding:104px 22px 112px}
  .phero{padding-top:72px}
  .highlights{grid-template-columns:minmax(0,1fr);gap:36px;padding:72px 22px 80px}
  .spec{grid-template-columns:minmax(0,1fr);gap:18px;padding:32px 0}
  .kv{grid-template-columns:minmax(0,1fr);gap:2px}
  .kv dd{margin-bottom:14px}
}