/* ============ Tokens ============ */
:root {
  --bg: #f4efe3;
  --bg-alt: #fbf8f0;
  --ink: #2b2620;
  --ink-soft: #6c6455;
  --line: #e3dbc9;
  --accent: #6f6c3f;
  --ink-invert: #f4efe3;
  --bg-invert: #2b2620;
  --radius: 18px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --container: 1120px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Pretendard Variable", Pretendard, system-ui, -apple-system, "Apple SD Gothic Neo", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.01em;
  overflow-x: hidden;
}

.container {
  width: min(100% - 44px, var(--container));
  margin-inline: auto;
}

a { color: inherit; text-decoration: none; }
em { font-style: normal; color: var(--accent); }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: var(--ink-invert);
  padding: 10px 16px; z-index: 200; border-radius: 0 0 10px 0;
}
.skip-link:focus { left: 0; }

/* ============ Buttons ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 15px 26px;
  background: var(--ink); color: var(--ink-invert);
  border-radius: 100px; font-weight: 600; font-size: 0.95rem;
  border: 1px solid var(--ink);
  transition: transform 0.4s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease);
  will-change: transform;
}
.btn:hover { transform: translateY(-3px); background: var(--accent); border-color: var(--accent); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--ink-invert); border-color: var(--ink); }
.btn--sm { padding: 10px 18px; font-size: 0.85rem; }

/* ============ Nav ============ */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  padding: 18px 0;
  transition: padding 0.4s var(--ease), background 0.4s var(--ease), border-color 0.4s var(--ease), backdrop-filter 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  padding: 12px 0;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.nav__logo { font-weight: 800; font-size: 1.15rem; letter-spacing: -0.03em; }
.nav__logo span { color: var(--accent); }
.nav__links { display: flex; gap: 28px; font-size: 0.92rem; font-weight: 500; }
.nav__links a { position: relative; color: var(--ink-soft); transition: color 0.25s; }
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -5px; width: 0; height: 2px;
  background: var(--accent); transition: width 0.35s var(--ease);
}
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after { width: 100%; }

/* ============ Hero ============ */
.hero {
  padding: 88px 0 64px;
  text-align: center;
}
.hero__art { display: block; width: 100%; }
.hero__art img {
  display: block; width: 100%; height: auto;
  max-width: 1180px; margin: 0 auto;
}
.hero__meta {
  display: flex; flex-direction: column; align-items: center;
  gap: 22px; margin-top: 26px;
}
.hero__line {
  max-width: 42ch; font-size: clamp(1rem, 1.5vw, 1.18rem);
  color: var(--ink-soft);
}
.hero__line strong { color: var(--ink); font-weight: 700; }
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }
.hero__channels { display: flex; gap: 22px; flex-wrap: wrap; justify-content: center; }
.hero__channels a {
  font-size: 0.92rem; font-weight: 600; color: var(--ink-soft);
  display: inline-flex; align-items: center; gap: 5px;
  border-bottom: 1px solid transparent; padding-bottom: 2px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.hero__channels a i { transition: transform 0.25s var(--ease); }
.hero__channels a:hover { color: var(--accent); border-color: var(--accent); }
.hero__channels a:hover i { transform: translate(2px, -2px); }

/* ============ Marquee ============ */
.marquee {
  border-block: 1px solid var(--line);
  padding: 20px 0; overflow: hidden; white-space: nowrap;
  background: var(--bg-alt);
}
.marquee__track {
  display: inline-flex; align-items: center; gap: 34px;
  font-size: 1.4rem; font-weight: 700; letter-spacing: -0.02em;
  animation: marquee 26s linear infinite;
}
.marquee__track i { color: var(--accent); font-size: 0.9rem; }
.marquee:hover .marquee__track { animation-play-state: paused; }

/* ============ Stats ============ */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  padding: 90px 0;
}
.stat strong {
  display: block; font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 800; letter-spacing: -0.04em; line-height: 1;
}
.stat span { display: block; margin-top: 10px; color: var(--ink-soft); font-size: 0.92rem; }

/* ============ Section shared ============ */
.section__label {
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.16em;
  color: var(--accent); margin-bottom: 22px;
}
.about, .skills, .career { padding: 90px 0; }

/* ============ About ============ */
.about__grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: start; }
.about__head {
  font-size: clamp(1.7rem, 3.4vw, 2.7rem); font-weight: 800;
  letter-spacing: -0.035em; line-height: 1.2;
}
.about__body p { color: var(--ink-soft); margin-bottom: 18px; }
.about__list { list-style: none; margin-top: 26px; border-top: 1px solid var(--line); }
.about__list li {
  padding: 15px 0; border-bottom: 1px solid var(--line);
  font-weight: 600; font-size: 0.98rem;
}
.about__list span { color: var(--accent); margin: 0 8px; }

/* ============ Featured ============ */
.featured { padding: 90px 0; }
.featured__head {
  font-size: clamp(1.9rem, 4vw, 3rem); font-weight: 800;
  letter-spacing: -0.04em; margin-bottom: 44px;
}
.feat__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feat {
  display: flex; flex-direction: column; gap: 12px;
  padding: 28px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-alt);
  transition: transform 0.4s var(--ease), border-color 0.3s var(--ease), box-shadow 0.4s var(--ease);
}
.feat:hover {
  transform: translateY(-4px);
  border-color: var(--ink);
  box-shadow: 0 18px 40px -24px rgba(0, 0, 0, 0.35);
}
.feat__badge {
  align-self: flex-start;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em;
  background: var(--ink); color: var(--ink-invert);
  padding: 5px 11px; border-radius: 100px;
}
.feat__title { font-size: 1.08rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1.4; }
.feat__desc { font-size: 0.9rem; color: var(--ink-soft); flex-grow: 1; }
.feat__stats {
  display: flex; flex-wrap: wrap; gap: 6px 16px;
  padding-top: 14px; border-top: 1px dashed var(--line);
  font-size: 0.82rem; color: var(--ink-soft);
}
.feat__stats strong { font-size: 0.95rem; font-weight: 800; color: var(--ink); letter-spacing: -0.02em; }
.feat__go {
  font-size: 0.86rem; font-weight: 700; color: var(--accent);
  display: inline-flex; align-items: center; gap: 5px;
}
.feat__go i { transition: transform 0.25s var(--ease); }
.feat:hover .feat__go i { transform: translate(3px, -3px); }
.featured__more {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 26px; font-size: 0.92rem; font-weight: 600; color: var(--ink-soft);
  border-bottom: 1px solid transparent; padding-bottom: 2px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.featured__more:hover { color: var(--accent); border-color: var(--accent); }

/* ============ Work ============ */
.work { background: var(--bg-alt); border-block: 1px solid var(--line); padding: 100px 0; }
.process__intro {
  max-width: 60ch; color: var(--ink-soft);
  font-size: clamp(1rem, 1.4vw, 1.12rem); margin: -20px 0 44px;
}
.process { list-style: none; counter-reset: none; }
.process li {
  display: grid; grid-template-columns: 84px 1fr; gap: 28px;
  padding: 30px 0; border-top: 1px solid var(--line);
}
.process li:last-child { border-bottom: 1px solid var(--line); }
.process__num {
  font-size: 1.4rem; font-weight: 800; letter-spacing: -0.03em;
  color: var(--accent);
}
.process__body h3 {
  font-size: clamp(1.15rem, 2.2vw, 1.5rem); font-weight: 700;
  letter-spacing: -0.03em; margin-bottom: 10px;
}
.process__body p { color: var(--ink-soft); max-width: 60ch; }
.process__eg {
  margin-top: 12px; padding: 12px 16px;
  background: color-mix(in srgb, var(--accent) 6%, transparent);
  border-radius: 12px;
  font-size: 0.88rem; color: var(--ink);
}
.work__head, .skills__head, .career__head, .contact__head {
  font-size: clamp(1.9rem, 4vw, 3rem); font-weight: 800;
  letter-spacing: -0.04em; margin-bottom: 50px;
}
.case {
  padding: 40px 0; border-top: 1px solid var(--line);
  display: grid; grid-template-columns: 1fr; gap: 16px;
  transition: background 0.4s var(--ease);
}
.case:last-child { border-bottom: 1px solid var(--line); }
.case:hover { background: color-mix(in srgb, var(--accent) 4%, transparent); }
.case__meta { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: baseline; }
.case__tag {
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.04em;
  background: var(--ink); color: var(--ink-invert);
  padding: 5px 12px; border-radius: 100px;
}
.case__role { font-size: 0.86rem; color: var(--ink-soft); }
.case__title {
  font-size: clamp(1.25rem, 2.4vw, 1.75rem); font-weight: 700;
  letter-spacing: -0.03em; line-height: 1.3;
}
.case__desc { color: var(--ink-soft); max-width: 62ch; }
.case__kpis {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
  margin-top: 12px; padding-top: 22px; border-top: 1px dashed var(--line);
}
.case__kpis strong {
  display: block; font-size: clamp(1.05rem, 2vw, 1.4rem); font-weight: 800;
  letter-spacing: -0.03em;
}
.case__kpis span { font-size: 0.82rem; color: var(--ink-soft); }

/* ============ Skills ============ */
.skills__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.skill {
  background: var(--bg-alt); padding: 34px 28px;
  transition: background 0.35s var(--ease), transform 0.35s var(--ease);
}
.skill:hover { background: var(--ink); transform: translateY(-2px); }
.skill:hover h3, .skill:hover p { color: var(--ink-invert); }
.skill h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 12px; letter-spacing: -0.02em; transition: color 0.3s; }
.skill p { font-size: 0.92rem; color: var(--ink-soft); transition: color 0.3s; }

/* ============ Career ============ */
.timeline { list-style: none; }
.timeline li {
  display: grid; grid-template-columns: 180px 1fr; gap: 30px;
  padding: 26px 0; border-top: 1px solid var(--line); align-items: baseline;
}
.timeline li:last-child { border-bottom: 1px solid var(--line); }
.timeline__year { font-weight: 700; font-size: 0.9rem; color: var(--accent); letter-spacing: 0.02em; }
.timeline strong { display: block; font-size: 1.1rem; font-weight: 700; letter-spacing: -0.02em; }
.timeline div span { color: var(--ink-soft); font-size: 0.92rem; }

/* ============ Collab ============ */
.collab { padding: 90px 0; }
.collab__head {
  font-size: clamp(1.9rem, 4vw, 3rem); font-weight: 800;
  letter-spacing: -0.04em; margin-bottom: 44px;
}
.collab__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.collab__card { background: var(--bg-alt); padding: 30px 26px; }
.collab__no {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--accent); color: var(--ink-invert);
  font-size: 0.82rem; font-weight: 800; margin-bottom: 14px;
}
.collab__card h3 { font-size: 1.1rem; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 9px; }
.collab__card p { font-size: 0.9rem; color: var(--ink-soft); }
.collab__note { margin-top: 24px; font-size: 0.92rem; color: var(--ink-soft); }
.collab__note a { color: var(--accent); font-weight: 600; border-bottom: 1px solid currentColor; }

/* ============ Service ============ */
.service { padding: 40px 0 90px; }
.service__head {
  font-size: clamp(1.9rem, 4vw, 3rem); font-weight: 800;
  letter-spacing: -0.04em; margin-bottom: 32px;
}
.service__card {
  display: flex; align-items: center; justify-content: space-between;
  gap: 32px; flex-wrap: wrap;
  padding: 34px 34px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: color-mix(in srgb, var(--accent) 7%, var(--bg-alt));
}
.service__card h3 { font-size: 1.2rem; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 10px; }
.service__card p { font-size: 0.94rem; color: var(--ink-soft); max-width: 60ch; }
.service__card .btn { flex-shrink: 0; }
.service__act { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; flex-shrink: 0; }
.service__mail { font-size: 0.84rem; color: var(--ink-soft); }
.service__mail b { color: var(--ink); font-weight: 700; }

/* ============ Toast ============ */
.toast {
  position: fixed; left: 50%; bottom: 26px; transform: translate(-50%, 12px);
  background: var(--bg-invert); color: var(--ink-invert);
  padding: 12px 20px; border-radius: 100px;
  font-size: 0.88rem; font-weight: 600; letter-spacing: -0.01em;
  box-shadow: 0 12px 34px -12px rgba(0, 0, 0, 0.45);
  opacity: 0; pointer-events: none; z-index: 300;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* ============ Contact ============ */
.contact {
  background: var(--bg-invert); color: var(--ink-invert);
  padding: 120px 0; margin-top: 40px;
}
.contact .section__label { color: var(--accent); }
.contact__head {
  font-size: clamp(2rem, 5vw, 3.6rem); line-height: 1.18;
  margin-bottom: 40px;
}
.contact__mail {
  display: inline-block; font-size: clamp(1.3rem, 3.6vw, 2.4rem);
  font-weight: 800; letter-spacing: -0.03em;
  border-bottom: 2px solid color-mix(in srgb, var(--ink-invert) 40%, transparent);
  padding-bottom: 6px;
  transition: border-color 0.35s var(--ease), color 0.35s var(--ease);
}
.contact__mail:hover { color: var(--accent); border-color: var(--accent); }
.contact__channels { display: flex; gap: 24px; flex-wrap: wrap; margin-top: 28px; }
.contact__channels a {
  font-size: 1rem; font-weight: 600;
  display: inline-flex; align-items: center; gap: 6px;
  border-bottom: 1px solid color-mix(in srgb, var(--ink-invert) 35%, transparent);
  padding-bottom: 3px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.contact__channels a i { transition: transform 0.25s var(--ease); }
.contact__channels a:hover { color: var(--accent); border-color: var(--accent); }
.contact__channels a:hover i { transform: translate(2px, -2px); }
.contact__sub { margin-top: 30px; max-width: 48ch; color: color-mix(in srgb, var(--ink-invert) 65%, transparent); }

/* ---- Inquiry form ---- */
.cform {
  margin-top: 40px; max-width: 620px;
  display: flex; flex-direction: column; gap: 16px;
}
.cform__row { display: flex; gap: 16px; }
.cform__row > label { flex: 1; }
.cform label {
  display: flex; flex-direction: column; gap: 7px;
  font-size: 0.82rem; font-weight: 600;
  color: color-mix(in srgb, var(--ink-invert) 78%, transparent);
}
.cform input,
.cform select,
.cform textarea {
  width: 100%;
  background: color-mix(in srgb, var(--ink-invert) 7%, transparent);
  border: 1px solid color-mix(in srgb, var(--ink-invert) 22%, transparent);
  border-radius: 10px;
  padding: 12px 14px;
  font: inherit; font-size: 0.95rem; font-weight: 400;
  color: var(--ink-invert);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.cform textarea { resize: vertical; min-height: 96px; }
.cform select { appearance: none; }
.cform select option { color: #1a1a1a; }
.cform input:focus,
.cform select:focus,
.cform textarea:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--ink-invert) 55%, transparent);
  background: color-mix(in srgb, var(--ink-invert) 12%, transparent);
}
.cform input[name="_gotcha"] { display: none; }
.cform .btn {
  align-self: flex-start; margin-top: 6px;
  background: var(--ink-invert); color: var(--bg-invert); border-color: var(--ink-invert);
}
.cform .btn:hover { background: var(--accent); color: var(--ink-invert); border-color: var(--accent); }
.cform .btn:disabled { opacity: 0.55; cursor: default; transform: none; }
.cform__note { font-size: 0.76rem; color: color-mix(in srgb, var(--ink-invert) 50%, transparent); }
.cform__done {
  margin-top: 40px; padding: 24px 26px;
  border: 1px solid color-mix(in srgb, var(--ink-invert) 22%, transparent);
  border-radius: var(--radius);
  font-size: 1rem; font-weight: 600;
  color: var(--ink-invert);
}

/* ============ Footer ============ */
.footer { background: var(--bg-invert); color: color-mix(in srgb, var(--ink-invert) 55%, transparent); padding: 40px 0 60px; }
.footer__inner { display: flex; flex-wrap: wrap; gap: 10px 40px; justify-content: space-between; font-size: 0.8rem; }
.footer__note { max-width: 60ch; }

/* ============ Reveal animation ============ */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.09s; }
.reveal[data-delay="2"] { transition-delay: 0.18s; }
.reveal[data-delay="3"] { transition-delay: 0.27s; }

/* ============ Keyframes ============ */
@keyframes rise { to { transform: translateY(0); } }
@keyframes marquee { to { transform: translateX(-50%); } }
@keyframes scrollLine { 0% { transform: translateX(-100%); } 100% { transform: translateX(250%); } }

/* ============ Responsive ============ */
@media (max-width: 900px) {
  .nav__links { display: none; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 40px 24px; padding: 70px 0; }
  .about__grid { grid-template-columns: 1fr; gap: 30px; }
  .skills__grid { grid-template-columns: 1fr; }
  .feat__grid { grid-template-columns: 1fr; }
  .collab__grid { grid-template-columns: 1fr; }
  .process li { grid-template-columns: 1fr; gap: 8px; }
  .cform__row { flex-direction: column; gap: 16px; }
  .service__card { flex-direction: column; align-items: flex-start; }
  .case__kpis { grid-template-columns: 1fr; gap: 14px; }
  .timeline li { grid-template-columns: 1fr; gap: 6px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .reveal { opacity: 1; transform: none; }
  .hero__title .line span { transform: none; }
}