/* ═══════════════════════════════════════════════════════════
   WHITESTONE — Design System
   ARK Holdings 디자인 토큰 상속 + 화이트스톤 자매 팔레트
   (Industrial Luxury: 잉크 블랙 · 차콜 화이트 · ARK 골드 · 엠버)
   ═══════════════════════════════════════════════════════════ */

:root{
  /* ── 잉크 (다크) ── */
  --ink:#08090b; --ink2:#0e1114; --ink3:#151a1f; --ink4:#1d242b;
  --ash:#2a2f36; --smoke:#6b7480; --mist:#a8b0b8;

  /* ── 차콜 화이트 (라이트) ── */
  --paper:#f5f2ea; --paper2:#e8e3d7; --paper3:#d6d0c2;

  /* ── ARK 상속 ── */
  --gold:#c9a84c; --gold-l:#e8c97a; --gold-d:#8a6f3a;
  --emerald:#10b981; --ark-blue:#4b77a9;

  /* ── 엠버 (열) ── */
  --ember:#ff6a1f; --ember-l:#ffb45c; --ember-d:#c2360d;

  /* ── 텍스트 ── */
  --txt:#e8e4dc; --txt-dim:#9aa3ad; --txt-ink:#14181c;

  --line:rgba(255,255,255,.09);
  --line-p:rgba(20,24,28,.12);

  /* ── 타이포 (ARK 상속) ── */
  --serif:'Cormorant Garamond','Noto Serif KR',Georgia,serif;
  --sans:'Montserrat','Pretendard','Noto Sans KR','Malgun Gothic',-apple-system,sans-serif;

  --nav-h:74px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--ink);color:var(--txt);
  font-family:var(--sans);font-weight:300;line-height:1.75;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* ── 공통 레이아웃 ── */
.wrap{max-width:1280px;margin:0 auto;padding:0 32px}
.wrap-n{max-width:1040px;margin:0 auto;padding:0 32px}
section{position:relative}
.sec{padding:clamp(80px,11vw,150px) 0}

/* ── 타이포 스케일 ── */
.eyebrow{
  font-size:11px;letter-spacing:.34em;color:var(--gold);
  font-weight:600;text-transform:uppercase;margin-bottom:18px;
}
h1,h2,h3{font-family:var(--serif);font-weight:400;letter-spacing:.01em;color:#fff}
h1{font-size:clamp(2.8rem,7.4vw,6.2rem);line-height:1.04}
h2{font-size:clamp(1.9rem,4.3vw,3.4rem);line-height:1.16;margin-bottom:22px}
h3{font-size:clamp(1.15rem,1.9vw,1.55rem);line-height:1.3}
.lead{font-size:clamp(15px,1.25vw,17px);color:var(--txt-dim);max-width:660px;line-height:1.85}
.g{color:var(--gold-l)}
.em{color:var(--ember-l)}

/* ── 버튼 ── */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  border:1px solid var(--line);border-radius:100px;
  padding:13px 26px;font-size:12.5px;letter-spacing:.06em;
  color:var(--txt);background:rgba(255,255,255,.03);
  transition:all .35s var(--ease);
}
.btn:hover{background:rgba(201,168,76,.1);border-color:rgba(201,168,76,.45);color:var(--gold-l)}
.btn.solid{background:var(--gold);border-color:var(--gold);color:#14100a;font-weight:600}
.btn.solid:hover{background:var(--gold-l);border-color:var(--gold-l);color:#14100a}
.btn .ar{transition:transform .35s var(--ease)}
.btn:hover .ar{transform:translateX(4px)}

/* ═══════ 헤더 ═══════ */
#hd{
  position:fixed;inset:0 0 auto 0;height:var(--nav-h);z-index:100;
  display:flex;align-items:center;
  transition:background .4s var(--ease),border-color .4s var(--ease),backdrop-filter .4s;
  border-bottom:1px solid transparent;
}
#hd.on{background:rgba(8,9,11,.82);backdrop-filter:blur(16px);border-bottom-color:var(--line)}
#hd .wrap{display:flex;align-items:center;justify-content:space-between;width:100%}
.logo{display:flex;align-items:baseline;gap:11px}
.logo .m{font-family:var(--serif);font-size:1.42rem;letter-spacing:.3em;color:#fff}
.logo .s{font-size:9.5px;letter-spacing:.24em;color:var(--gold);font-weight:600}
.nav{display:flex;align-items:center;gap:30px}
.nav a{font-size:12.5px;letter-spacing:.09em;color:var(--txt-dim);transition:color .3s;position:relative}
.nav a::after{
  content:'';position:absolute;left:0;bottom:-6px;width:0;height:1px;
  background:var(--gold);transition:width .35s var(--ease);
}
.nav a:hover{color:#fff}
.nav a:hover::after,.nav a.cur::after{width:100%}
.nav a.cur{color:var(--gold-l)}
.ark-badge{
  display:inline-flex;align-items:center;gap:7px;font-size:10px;letter-spacing:.14em;
  color:var(--smoke);border-left:1px solid var(--line);padding-left:18px;transition:color .3s;
}
.ark-badge:hover{color:var(--gold-l)}
.ark-badge .dot{width:5px;height:5px;border-radius:50%;background:var(--ark-blue)}
.burger{display:none;background:none;border:0;color:#fff;font-size:22px;cursor:pointer}
@media(max-width:940px){
  .nav{
    position:fixed;inset:var(--nav-h) 0 auto 0;flex-direction:column;align-items:flex-start;
    gap:0;background:rgba(8,9,11,.97);backdrop-filter:blur(18px);
    padding:0 32px;max-height:0;overflow:hidden;transition:max-height .45s var(--ease);
    border-bottom:1px solid var(--line);
  }
  .nav.open{max-height:520px;padding:14px 32px 26px}
  .nav a{padding:13px 0;font-size:14px;width:100%}
  .ark-badge{border-left:0;padding-left:0;margin-top:8px}
  .burger{display:block}
}

/* ═══════ HERO ═══════ */
#hero{
  position:relative;min-height:100svh;display:flex;align-items:center;
  overflow:hidden;padding-top:var(--nav-h);
}
#carbonfield{position:absolute;inset:0;z-index:0;display:block}
#hero .veil{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(1100px 620px at 22% 32%, rgba(255,106,31,.13), transparent 62%),
    radial-gradient(900px 520px at 84% 72%, rgba(75,119,169,.11), transparent 62%),
    linear-gradient(180deg, rgba(8,9,11,.35) 0%, rgba(8,9,11,.06) 34%, rgba(8,9,11,.92) 100%);
}
#hero .wrap{position:relative;z-index:2}
.hero-in{max-width:1000px}
.hero-in h1{margin:20px 0 24px}
.hero-in h1 .ln{display:block;overflow:hidden}
.hero-in h1 .ln > span{
  display:block;transform:translateY(105%);
  animation:lnUp 1.15s var(--ease) forwards;
}
.hero-in h1 .ln:nth-child(2) > span{animation-delay:.13s}
@keyframes lnUp{to{transform:translateY(0)}}
.hero-sub{
  font-size:clamp(14px,1.35vw,17px);color:var(--mist);max-width:620px;line-height:1.9;
  opacity:0;animation:fadeUp 1s var(--ease) .5s forwards;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:38px;opacity:0;animation:fadeUp 1s var(--ease) .68s forwards}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

.hero-stats{
  position:absolute;left:0;right:0;bottom:38px;z-index:2;
  opacity:0;animation:fadeUp 1s var(--ease) .9s forwards;
}
.hs-row{display:flex;flex-wrap:wrap;gap:38px;border-top:1px solid var(--line);padding-top:20px}
.hs{min-width:128px}
.hs .n{font-family:var(--serif);font-size:clamp(1.45rem,2.6vw,2.15rem);color:var(--gold-l);line-height:1}
.hs .l{font-size:10.5px;letter-spacing:.13em;color:var(--smoke);margin-top:6px}
.scroll-cue{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3;
  width:1px;height:52px;background:linear-gradient(180deg,transparent,var(--gold));
  opacity:.55;animation:cue 2.4s ease-in-out infinite;
}
@keyframes cue{0%,100%{transform:translateX(-50%) scaleY(.35);opacity:.25}50%{transform:translateX(-50%) scaleY(1);opacity:.8}}
@media(max-width:860px){.hero-stats{position:static;margin-top:52px}.scroll-cue{display:none}}

/* ═══════ 스크롤 리빌 ═══════ */
.rv{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv-d1{transition-delay:.09s}.rv-d2{transition-delay:.18s}.rv-d3{transition-delay:.27s}.rv-d4{transition-delay:.36s}

/* ═══════ 카드 / 그리드 ═══════ */
.grid{display:grid;gap:16px}
.g3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.g2{grid-template-columns:repeat(auto-fit,minmax(400px,1fr))}
.card{
  border:1px solid var(--line);border-radius:14px;padding:30px 28px;
  background:linear-gradient(180deg,rgba(255,255,255,.032),rgba(255,255,255,.008));
  transition:border-color .4s var(--ease),transform .4s var(--ease),background .4s;
}
.card:hover{border-color:rgba(201,168,76,.34);transform:translateY(-4px);background:linear-gradient(180deg,rgba(201,168,76,.06),rgba(255,255,255,.01))}
.card .k{font-size:10px;letter-spacing:.2em;color:var(--gold);font-weight:600;margin-bottom:12px}
.card p{font-size:13px;color:var(--txt-dim);margin-top:10px;line-height:1.75}
.card .num{font-family:var(--serif);font-size:2.3rem;color:var(--gold-l);line-height:1;margin-bottom:8px}

/* 이미지 슬롯 (자산 미확보 시 우아한 대체) */
.slot{
  position:relative;border-radius:12px;overflow:hidden;background:var(--ink3);
  aspect-ratio:16/10;border:1px solid var(--line);
}
.slot img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.slot:hover img{transform:scale(1.045)}
.slot.empty img{opacity:0}
.slot.empty::after{
  content:attr(data-label);position:absolute;inset:0;display:grid;place-items:center;
  font-size:11px;letter-spacing:.18em;color:var(--smoke);
  background:
    repeating-linear-gradient(135deg,rgba(255,255,255,.018) 0 12px,transparent 12px 24px),
    var(--ink3);
}

/* ═══════ 푸터 ═══════ */
#ft{border-top:1px solid var(--line);padding:64px 0 40px;background:var(--ink2)}
#ft .top{display:flex;flex-wrap:wrap;gap:44px;justify-content:space-between;margin-bottom:46px}
#ft .cols{display:flex;flex-wrap:wrap;gap:56px}
#ft .col h4{font-size:10px;letter-spacing:.2em;color:var(--gold);font-weight:600;margin-bottom:14px}
#ft .col a,#ft .col span{display:block;font-size:12.5px;color:var(--txt-dim);padding:5px 0;transition:color .3s}
#ft .col a:hover{color:var(--gold-l)}
#ft .bot{
  border-top:1px solid var(--line);padding-top:22px;display:flex;flex-wrap:wrap;gap:14px;
  justify-content:space-between;font-size:11px;color:var(--smoke);
}

/* ═══════ 유틸 ═══════ */
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);margin:0}
.tag{
  display:inline-block;border:1px solid var(--line);border-radius:100px;
  padding:6px 14px;font-size:11px;color:var(--txt-dim);margin:0 6px 6px 0;
}
.tag b{color:var(--gold-l);font-weight:600}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}
  .rv{opacity:1;transform:none}
}