@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.css');
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ---------- Tokens ---------- */
:root{
  --c-bg: #F8FAFC;
  --c-bg-soft: #F1F5F9;
  --c-surface: #FFFFFF;
  --c-fg: #020617;
  --c-fg-soft: #334155;
  --c-fg-muted: #64748B;
  --c-primary: #0F172A;
  --c-on-primary: #FFFFFF;
  --c-accent: #0369A1;
  --c-accent-2: #06B6D4;
  --c-border: #E2E8F0;
  --c-border-strong: #CBD5E1;
  --c-muted: #E8ECF1;
  --c-ring: #0F172A;
  --c-success: #059669;

  --shadow-sm: 0 1px 2px rgba(2,6,23,.06), 0 1px 3px rgba(2,6,23,.04);
  --shadow-md: 0 4px 12px rgba(2,6,23,.06), 0 2px 6px rgba(2,6,23,.04);
  --shadow-lg: 0 20px 40px -12px rgba(2,6,23,.12), 0 8px 16px -8px rgba(2,6,23,.08);

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --font-body: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
  --font-display: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-eng: 'Poppins', var(--font-body);

  --container: 1200px;
  --header-h: 72px;

  --ease: cubic-bezier(.22,.61,.36,1);

  --grid-line: rgba(15,23,42,.06);
  --dot: rgba(15,23,42,.08);
}

[data-theme="dark"]{
  --c-bg: #060B18;
  --c-bg-soft: #0B1220;
  --c-surface: #0F172A;
  --c-fg: #E2E8F0;
  --c-fg-soft: #CBD5E1;
  --c-fg-muted: #94A3B8;
  --c-primary: #E2E8F0;
  --c-on-primary: #0F172A;
  --c-accent: #38BDF8;
  --c-accent-2: #22D3EE;
  --c-border: #1E293B;
  --c-border-strong: #334155;
  --c-muted: #131C2E;
  --c-ring: #38BDF8;
  --c-success: #34D399;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,.4);
  --shadow-lg: 0 20px 40px -12px rgba(0,0,0,.6), 0 8px 16px -8px rgba(0,0,0,.4);

  --grid-line: rgba(148,163,184,.08);
  --dot: rgba(148,163,184,.12);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--c-fg);
  background:var(--c-bg);
  line-height:1.6;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  transition: background-color .3s var(--ease), color .3s var(--ease);
}
img,svg,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}

h1,h2,h3,h4{
  font-family:var(--font-display);
  color:var(--c-fg);
  letter-spacing:-.02em;
  line-height:1.2;
  word-break:keep-all;
  margin:0 0 .4em;
  font-weight:700;
}
h1{font-size:clamp(2.2rem, 5vw, 3.75rem); letter-spacing:-.035em}
h2{font-size:clamp(1.75rem, 3.2vw, 2.5rem); letter-spacing:-.03em}
h3{font-size:1.25rem; font-weight:600}
p{margin:0 0 1em;color:var(--c-fg-soft); word-break:keep-all}
.mono{font-family:var(--font-mono); font-feature-settings:"tnum" 1}
.eng{font-family:var(--font-eng); letter-spacing:0}

/* ---------- Layout ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
section{padding: clamp(72px, 10vw, 120px) 0; position:relative}
.section-head{max-width:720px;margin-bottom:clamp(32px, 5vw, 56px)}
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-mono); font-size:12px; font-weight:500;
  color:var(--c-accent); text-transform:uppercase; letter-spacing:.14em;
  padding:6px 12px; border:1px solid var(--c-border);
  border-radius:999px; background:var(--c-surface);
}
.eyebrow::before{
  content:""; width:6px; height:6px; border-radius:50%;
  background:var(--c-accent-2);
  box-shadow:0 0 0 3px color-mix(in srgb, var(--c-accent-2) 25%, transparent);
  animation:pulse 2.4s var(--ease) infinite;
}
@keyframes pulse{
  0%,100%{opacity:1; transform:scale(1)}
  50%{opacity:.55; transform:scale(.85)}
}
.lead{font-size:1.125rem;color:var(--c-fg-soft);max-width:60ch}

/* ---------- Header ---------- */
.header{
  position:fixed; inset:0 0 auto 0; z-index:50;
  height:var(--header-h);
  background:color-mix(in srgb, var(--c-bg) 82%, transparent);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease), background-color .3s var(--ease);
}
.header.is-scrolled{border-bottom-color:var(--c-border)}
.header-inner{
  height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;color:var(--c-fg);}
.brand-mark{
  width:32px;height:32px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),color-mix(in srgb, var(--c-primary) 60%, var(--c-accent)));
  border-radius:8px; color:var(--c-on-primary);
}
[data-theme="dark"] .brand-mark{
  background:linear-gradient(135deg, var(--c-accent), var(--c-accent-2));
  color:#020617;
}
.brand-name{font-family:var(--font-display); letter-spacing:-.02em; font-size:.98rem}
.brand-name em{font-style:normal; color:var(--c-accent)}
.nav{display:flex;align-items:center;gap:4px}
.nav a{
  display:inline-flex;align-items:center;
  padding:8px 14px; font-size:.94rem; color:var(--c-fg-soft); font-weight:500;
  border-radius:8px; transition:color .18s var(--ease), background-color .18s var(--ease);
}
.nav a:hover{color:var(--c-fg); background:var(--c-muted)}
.nav a.is-active{color:var(--c-fg)}
.nav a.is-active::after{
  content:""; display:block; width:4px; height:4px; border-radius:50%;
  background:var(--c-accent); margin-left:6px;
}
.header-actions{display:flex;align-items:center;gap:8px}
.theme-toggle{
  width:38px;height:38px;display:grid;place-items:center;border-radius:10px;
  border:1px solid var(--c-border); color:var(--c-fg-soft);
  transition:all .18s var(--ease);
}
.theme-toggle:hover{background:var(--c-muted); color:var(--c-fg)}
.theme-toggle .sun{display:none}
.theme-toggle .moon{display:block}
[data-theme="dark"] .theme-toggle .sun{display:block}
[data-theme="dark"] .theme-toggle .moon{display:none}
.nav-toggle{display:none}

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 20px; font-size:.94rem; font-weight:500;
  border-radius:10px; transition:all .2s var(--ease);
  border:1px solid transparent; white-space:nowrap;
  max-width:100%;
}
@media(max-width:420px){
  .btn{white-space:normal; text-align:center}
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--c-accent); color:#fff}
.btn-primary:hover{background:color-mix(in srgb, var(--c-accent) 88%, #000); transform:translateY(-1px); box-shadow:var(--shadow-md)}
.btn-outline{border-color:var(--c-border-strong); color:var(--c-fg)}
.btn-outline:hover{background:var(--c-muted); border-color:var(--c-fg-soft)}
.btn-dark{background:var(--c-primary); color:var(--c-on-primary)}
.btn-dark:hover{background:color-mix(in srgb, var(--c-primary) 85%, var(--c-accent)); transform:translateY(-1px)}
.btn-lg{padding:14px 24px; font-size:1rem}
.btn-ghost{color:var(--c-fg-soft)}
.btn-ghost:hover{color:var(--c-fg)}

/* ---------- Hero ---------- */
.hero{
  padding-top: calc(var(--header-h) + 64px);
  padding-bottom: clamp(80px, 10vw, 140px);
  position:relative; overflow:hidden;
}
.hero-bg{
  position:absolute; inset:0; z-index:0; pointer-events:none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 100% 70% at 50% 30%, #000 40%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse 100% 70% at 50% 30%, #000 40%, transparent 85%);
}
.hero-video-wrap{
  position:absolute; inset:0; z-index:0; overflow:hidden;
  mask-image: linear-gradient(180deg, #000 0%, #000 55%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 55%, transparent 100%);
  opacity:.18;
}
[data-theme="dark"] .hero-video-wrap{opacity:.35}
.hero-video-wrap video, .hero-video-wrap .video-poster{
  width:100%; height:100%; object-fit:cover;
}
.hero-inner{position:relative; z-index:1; max-width:900px}
.hero h1 .accent{
  background:linear-gradient(90deg, var(--c-accent), var(--c-accent-2));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.hero .lead{font-size:clamp(1.05rem, 1.5vw, 1.2rem); margin-top:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:32px 40px;
  margin-top:64px; padding-top:32px;
  border-top:1px solid var(--c-border);
}
.hero-meta .stat{display:flex;flex-direction:column;gap:4px}
.hero-meta .stat-num{
  font-family:var(--font-eng); font-weight:700; font-size:2rem;
  color:var(--c-fg); letter-spacing:-.02em; line-height:1;
}
.hero-meta .stat-num span{color:var(--c-accent)}
.hero-meta .stat-label{font-size:.85rem; color:var(--c-fg-muted)}

/* ---------- Problem/Solution split ---------- */
.split{
  display:grid; grid-template-columns: 1fr; gap:56px;
  align-items:start;
}
@media(min-width:900px){.split{grid-template-columns: 5fr 6fr; gap:80px}}
.problems{list-style:none;padding:0;margin:32px 0 0;display:grid;gap:14px}
.problems li{
  display:flex; gap:14px; align-items:flex-start;
  padding:18px 20px; background:var(--c-surface);
  border:1px solid var(--c-border); border-radius:12px;
  transition:border-color .2s var(--ease), transform .2s var(--ease);
}
.problems li:hover{border-color:var(--c-border-strong); transform:translateX(4px)}
.problems .x{
  flex:0 0 22px; width:22px; height:22px;
  color:var(--c-fg-muted);
}
.solution-card{
  background:var(--c-primary); color:var(--c-on-primary);
  border-radius:20px; padding:40px; position:relative; overflow:hidden;
  box-shadow: var(--shadow-lg);
}
[data-theme="dark"] .solution-card{
  background:linear-gradient(160deg, #0F172A 0%, #0B1220 100%);
  border:1px solid var(--c-border);
}
.solution-card::before{
  content:""; position:absolute; top:-20%; right:-15%;
  width:340px; height:340px; border-radius:50%;
  background:radial-gradient(circle, color-mix(in srgb, var(--c-accent-2) 40%, transparent), transparent 60%);
  filter:blur(20px);
}
.solution-card h3{color:var(--c-on-primary); font-size:1.5rem}
.solution-card p{color:color-mix(in srgb, var(--c-on-primary) 75%, transparent)}
.solution-card .kv{
  display:grid; grid-template-columns:auto 1fr; gap:8px 14px;
  margin-top:24px; font-family:var(--font-mono); font-size:.85rem;
  position:relative;
}
.solution-card .kv dt{color:var(--c-accent-2)}
.solution-card .kv dd{margin:0; color:color-mix(in srgb, var(--c-on-primary) 85%, transparent)}

/* ---------- Feature grid ---------- */
.features{
  display:grid; gap:20px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.feature{
  padding:32px 28px; border-radius:16px;
  background:var(--c-surface); border:1px solid var(--c-border);
  transition:all .25s var(--ease); position:relative; overflow:hidden;
}
.feature:hover{transform:translateY(-4px); border-color:var(--c-border-strong); box-shadow:var(--shadow-lg)}
.feature-icon{
  width:44px; height:44px; border-radius:10px;
  display:grid; place-items:center;
  background:color-mix(in srgb, var(--c-accent) 12%, transparent);
  color:var(--c-accent); margin-bottom:20px;
}
.feature-icon svg{width:22px;height:22px}
.feature h3{margin-bottom:8px}
.feature p{font-size:.95rem; margin:0}
.feature .n{
  position:absolute; top:24px; right:28px;
  font-family:var(--font-mono); font-size:.75rem; color:var(--c-fg-muted);
}

/* ---------- Process ---------- */
.process{
  display:grid; gap:0;
  grid-template-columns: repeat(4, 1fr);
  border:1px solid var(--c-border); border-radius:16px;
  overflow:hidden; background:var(--c-surface);
}
@media(max-width:800px){.process{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.process{grid-template-columns:1fr}}
.step{
  padding:32px 28px; border-right:1px solid var(--c-border);
  position:relative;
}
.step:last-child{border-right:0}
@media(max-width:800px){
  .step{border-right:0; border-bottom:1px solid var(--c-border)}
  .step:nth-child(even){border-right:0}
  .step:nth-child(odd){border-right:1px solid var(--c-border)}
  .step:nth-last-child(-n+2){border-bottom:0}
}
@media(max-width:520px){
  .step{border-right:0 !important; border-bottom:1px solid var(--c-border) !important}
  .step:last-child{border-bottom:0 !important}
}
.step-num{
  font-family:var(--font-mono); font-size:.8rem; font-weight:500;
  color:var(--c-accent); letter-spacing:.05em; margin-bottom:16px;
  display:inline-block;
}
.step h3{font-size:1.05rem; margin-bottom:6px}
.step p{font-size:.9rem; margin:0; color:var(--c-fg-muted)}

/* ---------- Industries ---------- */
.industries{
  display:grid; gap:24px;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}
.industry{
  border-radius:20px; border:1px solid var(--c-border);
  background:var(--c-surface); overflow:hidden;
  transition:all .3s var(--ease);
}
.industry:hover{transform:translateY(-4px); box-shadow:var(--shadow-lg); border-color:var(--c-border-strong)}
.industry-visual{
  aspect-ratio: 16/10;
  background:
    radial-gradient(circle at 20% 30%, color-mix(in srgb, var(--c-accent) 24%, transparent), transparent 50%),
    radial-gradient(circle at 80% 70%, color-mix(in srgb, var(--c-accent-2) 24%, transparent), transparent 50%),
    var(--c-bg-soft);
  position:relative; overflow:hidden;
}
.industry-visual::after{
  content:""; position:absolute; inset:0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 28px 28px;
}
.industry-visual svg{position:absolute; inset:0; margin:auto; width:60%; height:60%; opacity:.75}
.industry-body{padding:28px}
.industry-body h3{margin-bottom:8px}
.industry-body p{font-size:.95rem; margin-bottom:16px}
.tag-row{display:flex; flex-wrap:wrap; gap:6px}
.tag{
  font-family:var(--font-mono); font-size:.72rem;
  padding:4px 10px; border-radius:999px;
  background:var(--c-muted); color:var(--c-fg-soft);
}

/* ---------- FAQ ---------- */
.faq{max-width:800px; margin:0 auto}
.faq details{
  border-bottom:1px solid var(--c-border);
  padding:20px 0;
}
.faq details[open]{padding-bottom:24px}
.faq summary{
  list-style:none; cursor:pointer;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  font-weight:500; color:var(--c-fg); font-size:1.05rem;
  padding: 4px 0;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .plus{
  flex:0 0 24px; width:24px; height:24px; color:var(--c-fg-muted);
  transition:transform .3s var(--ease), color .2s var(--ease);
}
.faq details[open] summary .plus{transform:rotate(45deg); color:var(--c-accent)}
.faq details p{margin: 12px 0 0; color:var(--c-fg-soft)}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--c-primary); color:var(--c-on-primary);
  border-radius:24px; padding: clamp(48px, 6vw, 72px);
  position:relative; overflow:hidden;
}
[data-theme="dark"] .cta-band{
  background:linear-gradient(160deg, #0B1220 0%, #060B18 100%);
  border:1px solid var(--c-border);
}
.cta-band::before{
  content:""; position:absolute; inset:0;
  background-image:
    linear-gradient(color-mix(in srgb, var(--c-on-primary) 6%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--c-on-primary) 6%, transparent) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 80% 80% at 100% 0%, #000, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 100% 0%, #000, transparent 70%);
}
.cta-band .container-inner{position:relative}
.cta-band h2{color:var(--c-on-primary)}
.cta-band p{color:color-mix(in srgb, var(--c-on-primary) 78%, transparent); max-width:52ch}
.cta-actions{margin-top:32px; display:flex; gap:12px; flex-wrap:wrap}
.cta-band .btn-primary{background:var(--c-accent-2); color:#020617}
.cta-band .btn-primary:hover{background:#fff}
.cta-band .btn-outline{border-color:color-mix(in srgb, var(--c-on-primary) 30%, transparent); color:var(--c-on-primary)}
.cta-band .btn-outline:hover{background:color-mix(in srgb, var(--c-on-primary) 8%, transparent)}

/* ---------- Footer ---------- */
.footer{
  border-top:1px solid var(--c-border);
  padding:56px 0 32px;
  background:var(--c-bg);
  color:var(--c-fg-soft);
}
.footer-grid{
  display:grid; gap:40px;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
}
@media(max-width:800px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr}}
.footer h4{font-size:.8rem; color:var(--c-fg-muted); text-transform:uppercase; letter-spacing:.1em; font-weight:600; margin-bottom:16px; font-family:var(--font-mono)}
.footer ul{list-style:none; padding:0; margin:0; display:grid; gap:10px}
.footer a{font-size:.92rem; color:var(--c-fg-soft)}
.footer a:hover{color:var(--c-fg)}
.footer-brand p{font-size:.9rem; margin-top:12px; max-width:36ch}
.footer-bot{
  margin-top:48px; padding-top:24px;
  border-top:1px solid var(--c-border);
  display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
  font-size:.82rem; color:var(--c-fg-muted); font-family:var(--font-mono);
}
.footer-disclaimer{
  margin-top:16px;
  font-size:.74rem; line-height:1.7;
  color:var(--c-fg-muted);
  max-width:640px;
}

/* ---------- About page ---------- */
.about-hero{
  padding-top: calc(var(--header-h) + 72px);
  padding-bottom: 48px;
  border-bottom:1px solid var(--c-border);
  position:relative; overflow:hidden;
}
.about-hero .hero-bg{position:absolute; inset:0; z-index:0}
.about-hero .container{position:relative}
.about-hero h1{max-width:20ch}
.mv{display:grid; gap:24px; grid-template-columns:repeat(auto-fit, minmax(260px, 1fr))}
.mv-card{
  padding:32px; border:1px solid var(--c-border); border-radius:16px;
  background:var(--c-surface);
}
.mv-card .k{
  font-family:var(--font-mono); font-size:.75rem; color:var(--c-accent);
  text-transform:uppercase; letter-spacing:.14em; margin-bottom:14px;
}
.mv-card h3{font-size:1.35rem; margin-bottom:10px}
.mv-card p{font-size:.98rem; margin:0}
.timeline{border-left:2px solid var(--c-border); padding-left:32px; margin-top:32px}
.timeline .row{position:relative; padding:0 0 32px}
.timeline .row::before{
  content:""; position:absolute; left:-40px; top:6px;
  width:12px; height:12px; border-radius:50%;
  background:var(--c-bg); border:2px solid var(--c-accent);
}
.timeline .row:last-child{padding-bottom:0}
.timeline .y{font-family:var(--font-mono); color:var(--c-accent); font-size:.85rem; font-weight:500}
.timeline .t{margin:4px 0 4px; font-weight:600; color:var(--c-fg)}
.timeline .d{font-size:.92rem; color:var(--c-fg-soft); margin:0}

.values-grid{display:grid; gap:20px; grid-template-columns:repeat(auto-fit, minmax(260px, 1fr))}
.value{
  padding:28px; border-radius:14px; border:1px solid var(--c-border);
  background:var(--c-surface);
}
.value .n{font-family:var(--font-mono); font-size:.75rem; color:var(--c-fg-muted); margin-bottom:10px}
.value h3{font-size:1.1rem; margin-bottom:6px}
.value p{margin:0; font-size:.94rem}

/* ---------- Contact ---------- */
.contact-grid{
  display:grid; gap:40px;
  grid-template-columns: 1fr;
}
@media(min-width:900px){.contact-grid{grid-template-columns: 5fr 7fr; gap:64px}}
.contact-info h1{margin-top:8px}
.contact-info .lead{margin-bottom:32px}
.info-list{list-style:none; padding:0; margin:0; display:grid; gap:18px}
.info-list li{display:flex; gap:14px; align-items:flex-start}
.info-list .ic{
  flex:0 0 40px; width:40px; height:40px; border-radius:10px;
  display:grid; place-items:center;
  background:color-mix(in srgb, var(--c-accent) 12%, transparent);
  color:var(--c-accent);
}
.info-list .ic svg{width:20px; height:20px}
.info-list .k{font-size:.78rem; color:var(--c-fg-muted); text-transform:uppercase; letter-spacing:.08em; font-family:var(--font-mono)}
.info-list .v{color:var(--c-fg); font-weight:500}
.info-list .v.mono{font-family:var(--font-mono); font-size:.95rem}

.form-card{
  background:var(--c-surface); border:1px solid var(--c-border);
  border-radius:20px; padding:40px;
}
.form-row{display:grid; gap:20px; grid-template-columns:1fr 1fr}
@media(max-width:640px){.form-row{grid-template-columns:1fr}}
.field{display:flex; flex-direction:column; gap:8px; margin-bottom:20px}
.field label{
  font-size:.82rem; font-weight:500; color:var(--c-fg-soft);
  display:flex; align-items:center; gap:6px;
}
.field label .req{color:var(--c-accent)}
.field input, .field select, .field textarea{
  font-family:inherit; font-size:.95rem;
  padding:12px 14px; border:1px solid var(--c-border); border-radius:10px;
  background:var(--c-bg); color:var(--c-fg);
  transition:border-color .18s var(--ease), box-shadow .18s var(--ease);
  width:100%;
}
.field textarea{resize:vertical; min-height:140px; line-height:1.55}
.field input:focus, .field select:focus, .field textarea:focus{
  outline:none; border-color:var(--c-accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--c-accent) 15%, transparent);
}
.field .hint{font-size:.78rem; color:var(--c-fg-muted)}
.check-row{display:flex; align-items:flex-start; gap:10px; font-size:.88rem; color:var(--c-fg-soft); margin: 8px 0 24px}
.check-row input{margin-top:3px}
.form-actions{display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap}
.form-status{font-size:.88rem; color:var(--c-fg-muted); font-family:var(--font-mono)}
.form-status.ok{color:var(--c-success)}
.form-status.err{color:#DC2626}

/* ---------- Reveal (progressive enhancement) ---------- */
.reveal{
  opacity:1; transform:none;
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
html.js .reveal{opacity:0; transform:translateY(24px)}
html.js .reveal.is-in{opacity:1; transform:translateY(0)}
html.js .reveal-delay-1{transition-delay:.08s}
html.js .reveal-delay-2{transition-delay:.16s}
html.js .reveal-delay-3{transition-delay:.24s}
html.js .reveal-delay-4{transition-delay:.32s}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important; animation-iteration-count:1 !important;
    transition-duration:.01ms !important; scroll-behavior:auto !important;
  }
  html.js .reveal{opacity:1 !important; transform:none !important}
  .hero-video-wrap video{display:none}
}

/* focus ring */
:focus-visible{outline:2px solid var(--c-ring); outline-offset:3px; border-radius:6px}

/* Tablet header 완화: nav/actions gap 축소 + 보조 버튼 숨김 */
@media(max-width:1100px) and (min-width:821px){
  .header-inner{gap:12px}
  .nav{gap:0}
  .nav a{padding:8px 10px; font-size:.9rem}
  .header-actions .btn-outline{display:none}
}

/* 히어로 강제 개행: 매우 좁은 폭에서 완화 */
@media(max-width:520px){
  .hero h1 br{display:none}
}

/* ---------- Mobile nav ---------- */
@media(max-width:820px){
  .nav-toggle{
    display:grid; place-items:center; width:38px; height:38px;
    border-radius:10px; border:1px solid var(--c-border); color:var(--c-fg);
  }
  .nav{
    position:absolute; top:calc(var(--header-h)); left:0; right:0;
    flex-direction:column; align-items:stretch; gap:2px;
    padding:16px 24px; background:var(--c-bg); border-bottom:1px solid var(--c-border);
    transform: translateY(-8px); opacity:0; pointer-events:none;
    transition: opacity .2s var(--ease), transform .2s var(--ease);
  }
  .nav.is-open{transform:translateY(0); opacity:1; pointer-events:auto}
  .nav a{padding:14px 12px}
  .header-actions .btn:not(.btn-primary):not(.btn-dark){display:none}
  .header-actions .btn{padding:10px 14px; font-size:.88rem}
}

/* ---------- Utility ---------- */
.muted-bg{background:var(--c-bg-soft)}
.text-accent{color:var(--c-accent)}
.center{text-align:center}
.grid-2{display:grid; gap:24px; grid-template-columns:1fr}
@media(min-width:800px){.grid-2{grid-template-columns:1fr 1fr; gap:40px}}