/* Visioneer — 밝은 임상 블루 테마 */
:root{
  --blue:#2563eb; --blue-d:#1d4ed8; --blue-dd:#1e3a8a;
  --cyan:#06b6d4; --sky:#38bdf8;
  --bg:#f4f8fd; --bg2:#eaf2fc; --surface:#ffffff;
  --border:#e1e9f5; --border2:#cfddf2;
  --text:#0f1e3a; --text2:#46556f; --text3:#8b97ac;
  --card:rgba(255,255,255,.72);
  --grad:linear-gradient(120deg,#38bdf8,#2563eb);
  --grad-soft:linear-gradient(135deg,#eaf4ff,#dbeafe);
  --font:'Pretendard','Malgun Gothic',system-ui,-apple-system,sans-serif;
  --radius:18px; --radius-sm:11px;
  --shadow:0 10px 30px rgba(37,99,235,.08);
  --shadow-h:0 18px 40px rgba(37,99,235,.16);
  --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font); color:var(--text); line-height:1.5;
  background:
    radial-gradient(900px 400px at 85% -10%, rgba(56,189,248,.12), transparent 60%),
    radial-gradient(800px 500px at -5% 0%, rgba(37,99,235,.08), transparent 55%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ── NAVBAR ── */
.navbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.78);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:13px 24px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:9px}
.brand-mark{width:30px;height:30px;display:grid;place-items:center}
.brand-mark svg{width:28px;height:28px}
.brand-name{font-weight:800;font-size:19px;letter-spacing:-.02em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-search{flex:1;max-width:420px;display:flex;align-items:center;gap:8px;
  background:var(--bg2);border:1px solid var(--border);border-radius:11px;padding:8px 12px;color:var(--text3)}
.nav-search input{border:0;background:transparent;outline:none;width:100%;font-family:var(--font);font-size:13.5px;color:var(--text)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-btn{padding:8px 12px;border-radius:9px;font-size:13.5px;font-weight:600;color:var(--text2);transition:.15s}
.nav-btn:hover{background:var(--bg2);color:var(--blue-d)}
.nav-cta{background:var(--grad);color:#fff!important}
.nav-cta:hover{background:var(--grad);color:#fff!important;filter:brightness(1.08)}

/* ── HERO ── */
.hero{max-width:var(--maxw);margin:0 auto;padding:54px 24px 36px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center}
.hero-badge{display:inline-block;background:var(--grad-soft);color:var(--blue-d);
  font-size:12.5px;font-weight:700;padding:7px 13px;border-radius:999px;border:1px solid var(--border2)}
.hero h1{font-size:clamp(30px,4.2vw,50px);font-weight:800;line-height:1.14;letter-spacing:-.03em;margin:16px 0 14px}
.hero-sub{font-size:15.5px;color:var(--text2);max-width:520px;line-height:1.6}
.hero-sub b{color:var(--blue-d);font-weight:700}
.hero-actions{display:flex;align-items:center;gap:12px;margin-top:24px;flex-wrap:wrap}
.btn-primary{background:var(--grad);color:#fff;font-weight:700;font-size:14.5px;
  padding:13px 22px;border-radius:12px;border:0;cursor:pointer;box-shadow:var(--shadow);transition:.18s}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-h)}
.hero-search{display:flex;align-items:center;gap:8px;background:var(--surface);
  border:1px solid var(--border2);border-radius:12px;padding:11px 14px;color:var(--text3);min-width:240px}
.hero-search input{border:0;background:transparent;outline:none;width:100%;font-family:var(--font);font-size:14px;color:var(--text)}
.hero-stats{display:flex;align-items:center;gap:22px;margin-top:30px}
.stat{display:flex;flex-direction:column}
.stat-n{font-size:25px;font-weight:800;color:var(--blue-d);letter-spacing:-.02em}
.stat-l{font-size:12px;color:var(--text3);margin-top:2px}
.stat-div{width:1px;height:34px;background:var(--border2)}

/* hero scan demo */
.hero-visual{display:flex;justify-content:center}
.scan-card{display:block;text-decoration:none;color:inherit;cursor:pointer;width:100%;max-width:420px;
  background:#0a1626;border:1px solid #16314f;border-radius:18px;
  overflow:hidden;box-shadow:0 24px 60px rgba(14,40,80,.28);transition:transform .18s,box-shadow .18s,border-color .18s}
.scan-card:hover{transform:translateY(-4px);border-color:#38bdf8;box-shadow:0 28px 70px rgba(14,40,80,.4)}
.scan-card .scan-tags{color:#38bdf8;font-weight:700}
.scan-top{display:flex;align-items:center;gap:7px;padding:11px 14px;background:#0d1d33;border-bottom:1px solid #16314f}
.scan-top .dot{width:9px;height:9px;border-radius:50%;background:#27496b}
.scan-top .dot:nth-child(1){background:#fb7185}.scan-top .dot:nth-child(2){background:#fbbf24}.scan-top .dot:nth-child(3){background:#34d399}
.scan-label{margin-left:auto;font-size:11px;color:#6f8db5;font-family:monospace}
.scan-stage{position:relative;aspect-ratio:7/5;overflow:hidden;background:#0a1626}
.scan-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;filter:contrast(1.05) brightness(1.02)}
.scan-ovl{position:absolute;inset:0;width:100%;height:100%;display:block}
.scan-foot{display:flex;align-items:center;justify-content:space-between;padding:11px 14px;background:#0d1d33;border-top:1px solid #16314f}
.chip-live{font-size:11px;color:#34d399;font-weight:600}
.scan-tags{font-size:11px;color:#6f8db5;font-family:monospace}
.seg-mask,.seg-mask2{stroke-dasharray:1000;stroke-dashoffset:1000;animation:draw 4s ease-in-out infinite}
.det-box{opacity:0;animation:pop 4s ease infinite}
.scan-sweep{opacity:0;filter:drop-shadow(0 0 6px #22d3ee);animation:sweep 4s linear infinite}
/* 단일 4초 타임라인: 8% 그리기시작 → 35% 마스크완성 → 48% 박스등장 → 82% 유지 → 92% 다같이 사라짐 → 빈 간격 → 반복 */
@keyframes draw{0%,8%{stroke-dashoffset:1000;opacity:1}35%{stroke-dashoffset:0;opacity:1}82%{stroke-dashoffset:0;opacity:1}92%,100%{stroke-dashoffset:0;opacity:0}}
@keyframes pop{0%,35%{opacity:0}48%{opacity:1}82%{opacity:1}92%,100%{opacity:0}}
@keyframes sweep{0%,8%{transform:translateY(-8px);opacity:0}12%{opacity:.85}78%{opacity:.85}82%,100%{transform:translateY(498px);opacity:0}}
@media(prefers-reduced-motion:reduce){.seg-mask,.seg-mask2,.det-box,.scan-sweep{animation:none;opacity:1;stroke-dashoffset:0}}

/* ── SECTIONS ── */
.section{max-width:var(--maxw);margin:0 auto;padding:38px 24px}
.sec-head{margin-bottom:20px}
.sec-head h2{font-size:24px;font-weight:800;letter-spacing:-.02em;display:flex;align-items:center;gap:10px}
.sec-head p{font-size:13.5px;color:var(--text3);margin-top:5px}
.count-pill{font-size:13px;font-weight:700;color:var(--blue-d);background:var(--grad-soft);
  border:1px solid var(--border2);padding:3px 11px;border-radius:999px}

/* task explorer */
.task-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.task-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px 14px;cursor:pointer;text-align:left;transition:.16s;font-family:var(--font)}
.task-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--border2)}
.task-card.active{border-color:var(--blue);box-shadow:0 0 0 2px rgba(37,99,235,.18),var(--shadow);
  background:var(--grad-soft)}
.tc-ico{font-size:24px;display:block;margin-bottom:9px}
.task-card h3{font-size:14.5px;font-weight:800;color:var(--text)}
.task-card p{font-size:11px;color:var(--text3);margin-top:4px;line-height:1.4}

/* modality bar */
.mod-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.mod-chip{padding:8px 15px;border-radius:999px;border:1px solid var(--border2);background:var(--surface);
  font-family:var(--font);font-size:13px;font-weight:600;color:var(--text2);cursor:pointer;transition:.15s}
.mod-chip:hover{border-color:var(--blue);color:var(--blue-d)}
.mod-chip.active{background:var(--grad);color:#fff;border-color:transparent}

/* models grid */
.models-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.vt-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;transition:.18s}
.vt-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:var(--border2)}
.vt-thumb{position:relative;aspect-ratio:16/10;background:#0b1b30;overflow:hidden}
.vt-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.vt-thumb .ovl{position:absolute;inset:0;width:100%;height:100%;display:block}
.vt-scrim{position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,18,34,.40),rgba(8,18,34,0) 26%,rgba(8,18,34,0) 60%,rgba(8,18,34,.34))}
.vt-task-badge{position:absolute;left:10px;top:10px;background:rgba(8,20,38,.78);color:#bfe9ff;
  font-size:11px;font-weight:700;padding:4px 9px;border-radius:999px;backdrop-filter:blur(4px)}
.vt-mod-badge{position:absolute;right:10px;top:10px;background:var(--grad);color:#fff;
  font-size:10.5px;font-weight:700;padding:4px 9px;border-radius:999px}
.vt-body{padding:15px 16px 16px;display:flex;flex-direction:column;flex:1}
.vt-head{display:flex;align-items:baseline;justify-content:space-between;gap:8px}
.vt-head h3{font-size:16px;font-weight:800;letter-spacing:-.01em}
.vt-host{font-size:10.5px;color:var(--text3);font-weight:600;white-space:nowrap}
.vt-org{font-size:12px;color:var(--blue-d);font-weight:600;margin-top:2px}
.vt-desc{font-size:12.5px;color:var(--text2);margin-top:9px;line-height:1.55;flex:1}
.vt-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.vt-tag{font-size:10.5px;font-weight:600;color:var(--blue-d);background:var(--bg2);
  border:1px solid var(--border);padding:2px 8px;border-radius:7px}
.vt-meta{display:flex;gap:8px;margin-top:11px;padding-top:11px;border-top:1px solid var(--border);
  font-size:11px;color:var(--text3)}
.empty-state{text-align:center;color:var(--text3);padding:50px 0;font-size:14px}

/* info strip */
.info-strip{background:var(--grad-soft);border-radius:24px;margin-top:18px;
  border:1px solid var(--border2)}
.info-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.info-c{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px}
.info-c .ic{font-size:22px}
.info-c b{display:block;margin:8px 0 6px;font-size:14.5px;font-weight:800}
.info-c p{font-size:12.5px;color:var(--text2);line-height:1.55}
.info-c p b{display:inline;color:var(--blue-d);font-weight:700;margin:0}

/* footer */
.footer{max-width:var(--maxw);margin:30px auto 0;padding:30px 24px 40px;border-top:1px solid var(--border)}
.foot-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.foot-tag{font-size:12px;color:var(--text3);margin-left:10px}
.foot-links{display:flex;gap:16px}
.foot-links a{font-size:13px;color:var(--text2);font-weight:600}
.foot-links a:hover{color:var(--blue-d)}
.foot-copy{font-size:11.5px;color:var(--text3);margin-top:16px}
.img-credits-wrap{margin-top:18px;padding-top:16px;border-top:1px dashed var(--border2)}
.img-credits-wrap h4{font-size:12px;font-weight:700;color:var(--text2);margin-bottom:8px}
.img-credits{display:grid;grid-template-columns:repeat(2,1fr);gap:4px 18px}
.img-credits .cred{font-size:11px;color:var(--text3);line-height:1.5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.img-credits .cred b{color:var(--blue-d);font-weight:700;margin-right:4px}
.img-credits .cred:hover{color:var(--blue-d)}
@media(max-width:600px){.img-credits{grid-template-columns:1fr}}

/* ── RESPONSIVE ── */
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .hero-visual{order:-1}
  .task-grid{grid-template-columns:repeat(3,1fr)}
  .models-grid,.info-cards{grid-template-columns:repeat(2,1fr)}
  .nav-search{display:none}
}
@media(max-width:600px){
  .task-grid{grid-template-columns:repeat(2,1fr)}
  .models-grid,.info-cards{grid-template-columns:1fr}
  .nav-links{gap:0}
  .nav-btn{padding:8px 8px;font-size:12.5px}
  .hero-stats{gap:14px}
}