@import url('https://fonts.googleapis.com/css2?family=Castoro&family=Noto+Sans+KR:wght@300;400;500;600;700&display=swap');

:root {
  --ink: #181818;
  --ink-soft: #2a2927;
  --paper: #f2efe8;
  --white: #fffdf8;
  --accent: #f68f4b;
  --line: rgba(24, 24, 24, 0.2);
  --line-light: rgba(255, 253, 248, 0.22);
  --max-width: 1360px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans KR", Arial, sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: var(--ink); }

.preloader {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: flex;
  gap: .7rem;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  pointer-events: none;
  transition: opacity 500ms ease 250ms, visibility 0s linear 750ms;
}
.preloader span {
  width: .55rem;
  height: .55rem;
  border-radius: 50%;
  background: var(--accent);
  animation: loader-pulse 900ms ease-in-out infinite;
}
.preloader span:nth-child(2) { animation-delay: 120ms; }
.preloader span:nth-child(3) { animation-delay: 240ms; }
.loaded .preloader { visibility: hidden; opacity: 0; }
@keyframes loader-pulse {
  0%, 100% { opacity: .25; transform: translateY(0); }
  50% { opacity: 1; transform: translateY(-.75rem); }
}

.site-header {
  position: fixed;
  z-index: 30;
  top: 0;
  left: 50%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 8rem), var(--max-width));
  height: 7.5rem;
  transform: translateX(-50%);
  color: var(--white);
  transition: width 260ms ease, height 260ms ease, padding 260ms ease, background-color 260ms ease, backdrop-filter 260ms ease;
}
.site-header::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  border-bottom: 1px solid transparent;
  background: transparent;
  content: "";
  transition: inherit;
}
.site-header.is-scrolled {
  width: 100%;
  height: 5rem;
  padding: 0 max(2rem, calc((100vw - var(--max-width)) / 2));
}
.site-header.is-scrolled::before {
  border-bottom-color: rgba(255,255,255,.1);
  background: rgba(24,24,24,.88);
  backdrop-filter: blur(18px);
}
.brand {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.04em;
}
.site-header nav { display: flex; gap: clamp(1.5rem, 3vw, 3.5rem); }
.site-header nav a {
  position: relative;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.site-header nav a::after {
  position: absolute;
  right: 0;
  bottom: -.55rem;
  left: 0;
  height: 1px;
  background: var(--accent);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}
.site-header nav a:hover::after,
.site-header nav a:focus-visible::after { transform: scaleX(1); transform-origin: left; }

.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100svh;
  overflow: hidden;
  background: var(--ink);
  color: var(--white);
}
.hero-copy {
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 11rem max(4rem, calc((100vw - var(--max-width)) / 2)) 8rem;
}
.eyebrow {
  margin: 0 0 1.5rem;
  color: var(--accent);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .17em;
}
.hero h1 {
  max-width: 900px;
  margin: 0;
  font-family: "Castoro", Georgia, serif;
  font-size: clamp(3.7rem, 6.3vw, 6.9rem);
  font-weight: 400;
  letter-spacing: -.055em;
  line-height: .94;
}
.hero-lede {
  max-width: 640px;
  margin: 2.5rem 0 0;
  color: rgba(255,253,248,.68);
  font-size: clamp(.92rem, 1vw, 1.02rem);
  font-weight: 300;
  line-height: 1.85;
  word-break: keep-all;
}
.hero-actions { display: flex; gap: .8rem; margin-top: 3rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 10.5rem;
  height: 3.5rem;
  border: 1px solid var(--white);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .08em;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}
.button--solid { background: var(--white); color: var(--ink); }
.button--solid:hover { background: var(--accent); border-color: var(--accent); }
.button--outline:hover { background: var(--white); color: var(--ink); }

.hero-media {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  background: #d8d1c5;
}
.hero-media::after {
  position: absolute;
  z-index: 2;
  inset: 0;
  background: linear-gradient(90deg, rgba(24,24,24,.16), transparent 42%), linear-gradient(0deg, rgba(24,24,24,.35), transparent 48%);
  content: "";
  pointer-events: none;
}
.hero-poster {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: 9rem 4rem 5rem;
  background:
    radial-gradient(circle at 78% 18%, rgba(246,143,75,.55), transparent 22%),
    linear-gradient(145deg, #d7d0c4 0%, #beb5a7 100%);
}
.poster-topline {
  display: flex;
  justify-content: space-between;
  color: rgba(24,24,24,.62);
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .16em;
}
.poster-mark {
  align-self: center;
  justify-self: center;
  display: grid;
  place-items: center;
  width: clamp(14rem, 24vw, 24rem);
  aspect-ratio: 1;
  border: 1px solid rgba(24,24,24,.16);
  border-radius: 50%;
  background: rgba(255,253,248,.45);
  color: var(--ink);
  font-family: "Castoro", Georgia, serif;
  font-size: clamp(7rem, 15vw, 14rem);
  letter-spacing: -.08em;
  box-shadow: 0 2.5rem 5rem rgba(24,24,24,.12);
  backdrop-filter: blur(12px);
}
.poster-copy { align-self: end; color: var(--ink); }
.poster-copy > span { display: block; margin-bottom: .8rem; font-size: .62rem; font-weight: 700; letter-spacing: .16em; }
.poster-copy strong {
  font-family: "Castoro", Georgia, serif;
  font-size: clamp(2.2rem, 4vw, 4.6rem);
  font-weight: 400;
  letter-spacing: -.04em;
  line-height: .97;
}
.hero-media__label {
  position: absolute;
  z-index: 3;
  right: 2.5rem;
  bottom: 2.5rem;
  left: 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: end;
  border-top: 1px solid rgba(255,255,255,.5);
  padding-top: .9rem;
  color: rgba(255,255,255,.72);
  font-size: .62rem;
  letter-spacing: .14em;
}
.hero-media__project { display: grid; gap: .35rem; }
.hero-media__project strong {
  color: var(--white);
  font-family: "Castoro", Georgia, serif;
  font-size: 1.35rem;
  font-weight: 400;
  letter-spacing: -.02em;
}
.hero-media__project small { font-size: .58rem; letter-spacing: .14em; }
.hero-side {
  position: absolute;
  z-index: 4;
  top: 50%;
  color: rgba(255,255,255,.52);
  font-size: .58rem;
  letter-spacing: .2em;
  writing-mode: vertical-rl;
}
.hero-side--left { left: 1.3rem; transform: translateY(-50%) rotate(180deg); }
.hero-side--right { right: 1.3rem; transform: translateY(-50%); }
.hero-side--right::before {
  display: inline-block;
  width: 1px;
  height: 5rem;
  margin-bottom: 1rem;
  background: rgba(255,255,255,.35);
  content: "";
}

.section-shell { width: min(calc(100% - 8rem), var(--max-width)); margin: 0 auto; }
.about,
.principles,
.contact { padding: clamp(7rem, 12vw, 12rem) 0; }
.section-heading {
  position: relative;
  display: grid;
  grid-template-columns: minmax(160px, .33fr) 1fr;
  gap: 2rem;
  align-items: start;
  border-top: 1px solid var(--line);
  padding-top: 2.3rem;
}
.section-heading::before {
  position: absolute;
  top: -1.1rem;
  left: 0;
  padding-right: 1rem;
  background: var(--paper);
  color: var(--accent);
  content: attr(data-num);
  font-family: "Castoro", Georgia, serif;
  font-size: 1.2rem;
}
.section-heading > p {
  margin: .55rem 0 0;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .16em;
}
.section-heading h2 {
  max-width: 1000px;
  margin: 0;
  font-family: "Castoro", Georgia, serif;
  font-size: clamp(2.4rem, 4.3vw, 4.8rem);
  font-weight: 400;
  letter-spacing: -.045em;
  line-height: 1.06;
  word-break: keep-all;
}
.about-intro {
  max-width: 800px;
  margin: clamp(4rem, 7vw, 7rem) 0 0 33%;
}
.about-intro p {
  margin: 0;
  color: rgba(24,24,24,.75);
  font-size: clamp(.95rem, 1.1vw, 1.08rem);
  line-height: 1.9;
  word-break: keep-all;
}
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(2rem, 5vw, 6rem);
  margin-top: clamp(5rem, 9vw, 9rem);
  border-top: 1px solid var(--line);
  padding-top: 3rem;
}
.about-grid h3,
.principle h3 {
  position: relative;
  margin: 0 0 1.4rem;
  padding-left: 1rem;
  font-family: "Castoro", Georgia, serif;
  font-size: 1.35rem;
  font-weight: 400;
}
.about-grid h3::before,
.principle h3::before {
  position: absolute;
  top: .2em;
  bottom: .2em;
  left: 0;
  width: 3px;
  background: var(--accent);
  content: "";
}
.about-grid p,
.principle p { margin: 0; color: rgba(24,24,24,.68); font-size: .9rem; line-height: 1.75; word-break: keep-all; }

.work { padding: clamp(7rem, 12vw, 12rem) 0 clamp(6rem, 10vw, 10rem); background: var(--ink); color: var(--white); }
.section-heading--light { border-color: var(--line-light); }
.section-heading--light::before { background: var(--ink); }
.project-list {
  display: grid;
  gap: 2rem;
  width: min(calc(100% - 8rem), var(--max-width));
  margin: clamp(5rem, 9vw, 9rem) auto 0;
}
.project {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 560px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.12);
}
.project-copy {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 2rem;
  align-content: end;
  padding: clamp(2.5rem, 5vw, 5rem);
  background: #1d1d1d;
}
.project-number { color: rgba(255,253,248,.42); font-family: "Castoro", Georgia, serif; font-size: 1.05rem; }
.project-label { margin: 0 0 1.1rem; color: var(--accent); font-size: .65rem; font-weight: 700; letter-spacing: .16em; }
.project-copy h3 {
  margin: 0;
  font-family: "Castoro", Georgia, serif;
  font-size: clamp(2rem, 3.7vw, 4rem);
  font-weight: 400;
  letter-spacing: -.045em;
  line-height: 1.04;
}
.project-copy p:last-child { max-width: 520px; margin: 1.8rem 0 0; color: rgba(255,253,248,.62); font-size: .93rem; line-height: 1.85; word-break: keep-all; }
.project-visual { position: relative; min-height: 560px; overflow: hidden; }
.project-visual--cream { background: #ddd5c9; }
.project-visual--orange { display: grid; place-items: center; background: var(--accent); }
.project-visual--dark { background: #101010; }
.phone {
  position: absolute;
  width: 210px;
  height: 430px;
  border: 9px solid #161616;
  border-radius: 38px;
  background: #161616;
  box-shadow: 0 2.2rem 3rem rgba(24,24,24,.23);
  overflow: hidden;
}
.phone-back { left: 19%; top: 17%; transform: rotate(-8deg); opacity: .82; }
.phone-front { right: 18%; top: 10%; transform: rotate(7deg); }
.phone-screen { height: 100%; border-radius: 29px; padding: 2.4rem 1.3rem; }
.muted-screen { display: grid; gap: 1rem; align-content: center; background: #f7f2ea; }
.muted-screen span { display: block; height: 4.5rem; border-radius: 1rem; background: #e4ddd2; }
.accent-screen { display: grid; place-items: center; align-content: center; gap: 1.5rem; background: var(--accent); color: var(--white); text-align: center; }
.accent-screen strong { font-family: "Castoro", Georgia, serif; font-size: 1.65rem; font-weight: 400; }
.mini-m { display: grid; place-items: center; width: 5.5rem; height: 5.5rem; border: 1px solid rgba(255,255,255,.65); border-radius: 50%; font-family: "Castoro", Georgia, serif; font-size: 3rem; }
.browser-card {
  width: min(78%, 620px);
  aspect-ratio: 1.25;
  padding: 1.25rem;
  border: 1px solid rgba(24,24,24,.22);
  background: var(--white);
  color: var(--ink);
  box-shadow: 2rem 2rem 0 rgba(24,24,24,.12);
}
.browser-dots { display: flex; gap: .45rem; padding-bottom: 1rem; border-bottom: 1px solid rgba(24,24,24,.12); }
.browser-dots i { width: .5rem; height: .5rem; border-radius: 50%; background: var(--ink); opacity: .32; }
.browser-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: .9rem; height: calc(100% - 4rem); padding-top: 1rem; }
.browser-grid span { border: 1px solid rgba(24,24,24,.16); background: #eee8df; }
.browser-grid span:first-child { grid-row: span 2; background: var(--ink); }
.browser-caption { margin-top: .7rem; font-size: .56rem; font-weight: 700; letter-spacing: .17em; }
.process-ring { position: absolute; border: 1px solid rgba(255,255,255,.16); border-radius: 50%; }
.ring-a { inset: 15%; }
.ring-b { inset: 28%; }
.process-core {
  position: absolute;
  left: 50%; top: 50%; transform: translate(-50%,-50%);
  display: grid; place-items: center;
  width: 8rem; height: 8rem;
  border: 1px solid rgba(255,255,255,.45);
  border-radius: 50%;
  background: var(--accent);
  color: var(--ink);
  font-family: "Castoro", Georgia, serif;
  font-size: 4rem;
}
.process-tag { position: absolute; color: rgba(255,255,255,.62); font-size: .62rem; font-weight: 700; letter-spacing: .16em; }
.tag-idea { top: 12%; left: 50%; transform: translateX(-50%); }
.tag-build { right: 11%; top: 49%; }
.tag-run { left: 18%; bottom: 14%; }

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: clamp(5rem, 9vw, 9rem);
  border-top: 1px solid var(--line);
  padding-top: 3rem;
}
.principle > span { display: block; margin-bottom: 3rem; color: rgba(24,24,24,.4); font-family: "Castoro", Georgia, serif; font-size: 1rem; }

.contact { background: #ded7cb; }
.contact .section-heading::before { background: #ded7cb; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-top: 5rem;
  border-top: 1px solid var(--line);
  padding-top: 2.5rem;
}
.contact-grid > p { margin: 0; max-width: 580px; color: rgba(24,24,24,.7); line-height: 1.9; }
.contact-links { display: flex; justify-content: flex-end; gap: .8rem; flex-wrap: wrap; }
.contact-links a {
  display: inline-flex;
  align-items: center;
  gap: 1.5rem;
  min-height: 3.4rem;
  padding: 0 1.3rem;
  border: 1px solid var(--ink);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  transition: background 160ms ease, color 160ms ease;
}
.contact-links a:hover { background: var(--ink); color: var(--white); }

.site-footer { background: var(--ink); color: rgba(255,253,248,.58); }
.footer-wrap { min-height: 12rem; display: flex; align-items: center; justify-content: space-between; gap: 3rem; padding: 2.5rem 0; }
.footer-wrap strong { color: var(--white); font-family: "Castoro", Georgia, serif; font-size: 1.5rem; font-weight: 400; }
.footer-wrap p { margin: .5rem 0 0; font-size: .72rem; line-height: 1.7; }

.reveal { opacity: 0; transform: translateY(3.5rem); transition: opacity 760ms cubic-bezier(.22,1,.36,1), transform 900ms cubic-bezier(.22,1,.36,1); }
.reveal.is-visible { opacity: 1; transform: none; }

.policy-shell { min-height: 100svh; background: var(--paper); }
.policy-header { position: sticky; top: 0; z-index: 20; background: rgba(242,239,232,.9); backdrop-filter: blur(16px); border-bottom: 1px solid var(--line); }
.policy-nav { width: min(calc(100% - 4rem), 980px); min-height: 5rem; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.policy-nav .brand { color: var(--ink); }
.policy-nav a:last-child { font-size: .7rem; font-weight: 700; letter-spacing: .12em; }
.policy {
  width: min(calc(100% - 4rem), 980px);
  margin: 0 auto;
  padding: 7rem 0 10rem;
}
.policy .eyebrow { color: var(--accent); }
.policy h1 {
  margin: 0;
  font-family: "Castoro", Georgia, serif;
  font-size: clamp(3.2rem, 7vw, 6.5rem);
  font-weight: 400;
  letter-spacing: -.05em;
  line-height: .98;
}
.policy-date { margin: 1.5rem 0 5rem; color: rgba(24,24,24,.48); font-size: .8rem; }
.policy section { display: grid; grid-template-columns: minmax(180px, .34fr) 1fr; gap: 2rem; padding: 2.2rem 0; border-top: 1px solid var(--line); }
.policy section h2 { margin: 0; font-family: "Castoro", Georgia, serif; font-size: 1.25rem; font-weight: 400; }
.policy section p { margin: 0; color: rgba(24,24,24,.7); font-size: .92rem; line-height: 1.85; word-break: keep-all; }
.back-link { display: inline-block; margin-top: 3.5rem; border-bottom: 1px solid var(--ink); padding-bottom: .3rem; font-size: .78rem; font-weight: 700; }
.policy-footer { background: var(--ink); color: rgba(255,253,248,.55); }
.policy-footer > div { width: min(calc(100% - 4rem), 980px); min-height: 8rem; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.policy-footer p { margin: 0; font-size: .72rem; }

@media (max-width: 980px) {
  .site-header { width: calc(100% - 4rem); }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { min-height: 86svh; padding: 10rem 3rem 6rem; }
  .hero-media { min-height: 78svh; }
  .hero-side { display: none; }
  .section-shell,
  .project-list { width: calc(100% - 4rem); }
  .project { grid-template-columns: 1fr; }
  .project-copy { min-height: 430px; }
  .project-visual { min-height: 480px; }
  .about-grid,
  .principle-grid { grid-template-columns: 1fr; gap: 3rem; }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-links { justify-content: flex-start; }
}

@media (max-width: 720px) {
  .site-header { width: calc(100% - 2rem); height: 5.5rem; }
  .site-header nav { gap: 1rem; }
  .site-header nav a { font-size: .6rem; }
  .hero-copy { min-height: 78svh; padding: 8.5rem 1.5rem 5rem; }
  .hero h1 { font-size: clamp(3.5rem, 17vw, 5.2rem); }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .button { width: 100%; }
  .hero-poster { padding: 7rem 1.5rem 3rem; }
  .poster-mark { width: min(70vw, 19rem); }
  .hero-media__label { right: 1.5rem; left: 1.5rem; }
  .hero-media__meta { display: none; }
  .section-shell,
  .project-list { width: calc(100% - 2rem); }
  .about,
  .principles,
  .contact,
  .work { padding-top: 6rem; padding-bottom: 6rem; }
  .section-heading { grid-template-columns: 1fr; gap: 1rem; }
  .section-heading h2 { font-size: clamp(2.4rem, 12vw, 3.8rem); }
  .about-intro { margin-left: 0; }
  .project-list { margin-top: 4rem; }
  .project-copy { grid-template-columns: 3.5rem 1fr; gap: 1rem; padding: 2.2rem 1.3rem; min-height: 380px; }
  .project-copy h3 { font-size: clamp(2.25rem, 12vw, 3.4rem); }
  .project-visual { min-height: 390px; }
  .phone { width: 160px; height: 330px; border-radius: 30px; }
  .phone-screen { border-radius: 22px; }
  .browser-card { width: 86%; }
  .process-core { width: 6.5rem; height: 6.5rem; font-size: 3.2rem; }
  .contact-grid { margin-top: 3.5rem; }
  .contact-links { flex-direction: column; }
  .contact-links a { justify-content: space-between; }
  .footer-wrap { align-items: flex-start; flex-direction: column; justify-content: center; }
  .policy-nav,
  .policy,
  .policy-footer > div { width: calc(100% - 2rem); }
  .policy { padding: 6rem 0 8rem; }
  .policy section { grid-template-columns: 1fr; gap: 1rem; }
}

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