/* Layout: dark machined hero → light aluminium body; a spec-sheet rhythm of mono labels, tables and one process rail. Single deliberate look. */
:root {
  color-scheme: light;
  --graphite: #17181A;
  --graphite-2: #232427;
  --alu: #ECEBE8;
  --alu-2: #DEDCD7;
  --plate: #F7F6F3;
  --ink: #17181A;
  --ink-2: #4B4A47;
  --ink-3: #6F6C67;
  --on-dark: #F2F0EC;
  --on-dark-2: #B8B4AD;
  --copper: #A3562A;
  --copper-lt: #D58A57;
  --line: #CFCCC6;
  --line-dk: #3A3B3F;
  --f-display: 'Noto Serif KR', 'Apple SD Gothic Neo', Georgia, serif;
  --f-body: 'Noto Sans KR', 'Apple SD Gothic Neo', 'Malgun Gothic', Arial, sans-serif;
  --f-mono: 'IBM Plex Mono', ui-monospace, Menlo, Consolas, monospace;
  --s-1: clamp(2.25rem, 1.4rem + 3.6vw, 4.25rem);
  --s-2: clamp(1.75rem, 1.3rem + 1.8vw, 2.6rem);
  --s-3: clamp(1.2rem, 1.05rem + .5vw, 1.45rem);
  --s-body: 1.0625rem;
  --s-small: .875rem;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--alu); color: var(--ink); font-family: var(--f-body); font-size: var(--s-body); line-height: 1.7; word-break: keep-all; overflow-wrap: anywhere; -webkit-font-smoothing: antialiased; }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--graphite); }
img { max-width: 100%; display: block; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--copper-lt); outline-offset: 3px; border-radius: 2px; }
h1, h2, h3 { margin: 0; text-wrap: balance; }
p { margin: 0; }
.wrap { max-width: 1200px; margin-inline: auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.wrap.pad { padding-left: max(24px, env(safe-area-inset-left, 0px)); padding-right: max(24px, env(safe-area-inset-right, 0px)); }
.label { font-family: var(--f-mono); font-size: .8125rem; letter-spacing: .14em; text-transform: uppercase; color: var(--copper); }
.dark .label { color: var(--copper-lt); }
.sec { padding-block: clamp(4rem, 3rem + 4vw, 7rem); }
.sec-head { display: grid; gap: .9rem; max-width: 46rem; margin-bottom: clamp(2rem, 1.5rem + 2vw, 3.25rem); }
.sec-head h2 { font-family: var(--f-display); font-size: var(--s-2); line-height: 1.3; font-weight: 600; }
.sec-head p { color: var(--ink-2); max-width: 40rem; }
.dark { background: var(--graphite); color: var(--on-dark); }
.dark .sec-head p { color: var(--on-dark-2); }

/* header */
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: var(--graphite); color: var(--on-dark); border-bottom: 1px solid var(--line-dk); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 64px; }
.brand { display: flex; align-items: baseline; gap: .6rem; text-decoration: none; }
.brand b { font-family: var(--f-display); font-size: 1.25rem; font-weight: 700; }
.brand span { font-family: var(--f-mono); font-size: .75rem; letter-spacing: .2em; color: var(--copper-lt); }
.nav { display: flex; align-items: center; gap: 1.5rem; font-size: .9375rem; }
.nav a { text-decoration: none; color: var(--on-dark-2); }
.nav a:hover { color: var(--on-dark); }
.nav .lang { font-family: var(--f-mono); font-size: .8125rem; border: 1px solid var(--line-dk); padding: .2rem .55rem; border-radius: 3px; color: var(--on-dark); }
.nav .cta { background: var(--copper); color: #FBF6F1; padding: .45rem 1rem; border-radius: 3px; }
.menu { display: none; }
@media (max-width: 1180px) {
  .nav { display: none; }
  .menu { display: block; position: relative; }
  .menu summary { list-style: none; cursor: pointer; font-family: var(--f-mono); font-size: .8125rem; letter-spacing: .12em; border: 1px solid var(--line-dk); padding: .45rem .8rem; border-radius: 3px; }
  .menu summary::-webkit-details-marker { display: none; }
  .menu[open] .panel { display: grid; }
  .menu .panel { display: none; position: absolute; right: 0; top: calc(100% + 10px); width: min(280px, calc(100vw - 32px)); background: var(--graphite-2); border: 1px solid var(--line-dk); border-radius: 4px; padding: .5rem; gap: .1rem; }
  .menu .panel a { padding: .65rem .75rem; text-decoration: none; color: var(--on-dark); border-radius: 3px; }
  .menu .panel a:hover { background: var(--graphite); }
}

/* hero */
.hero { padding-block: clamp(3rem, 2rem + 4vw, 6rem) 0; overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: clamp(2rem, 1rem + 3vw, 4rem); align-items: end; }
.hero-copy { display: grid; gap: 1.6rem; padding-bottom: clamp(3rem, 2rem + 4vw, 6rem); }
.hero h1 { font-family: var(--f-display); font-size: var(--s-1); line-height: 1.2; font-weight: 600; letter-spacing: -.01em; }
.hero h1 em { font-style: normal; color: var(--copper-lt); }
.hero .lead { font-size: clamp(1.05rem, 1rem + .35vw, 1.25rem); color: var(--on-dark-2); max-width: 32rem; }
.spec { font-family: var(--f-mono); font-size: .8125rem; color: var(--on-dark-2); display: flex; flex-wrap: wrap; gap: .4rem 1.1rem; border-top: 1px solid var(--line-dk); padding-top: 1rem; }
.spec b { color: var(--on-dark); font-weight: 500; }
.btns { display: flex; flex-wrap: wrap; gap: .75rem; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: .7rem 1.4rem; border-radius: 3px; text-decoration: none; font-weight: 500; border: 1px solid transparent; }
.btn.primary { background: var(--copper); color: #FBF6F1; }
.btn.primary:hover { background: #8F4A23; }
.btn.ghost { border-color: var(--line-dk); color: var(--on-dark); }
.btn.ghost:hover { border-color: var(--on-dark-2); }
.hero-img { position: relative; aspect-ratio: 4 / 4.4; max-width: 100%; }
.hero-img img { width: 100%; height: 100%; object-fit: cover; border-radius: 4px 4px 0 0; }
.hero-img figcaption { position: absolute; left: 1rem; bottom: 1rem; font-family: var(--f-mono); font-size: .75rem; letter-spacing: .08em; color: var(--on-dark); background: rgba(23,24,26,.72); padding: .35rem .6rem; border-radius: 3px; }
@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-copy { padding-bottom: 0; }
  .hero-img { aspect-ratio: 4 / 3; }
}

/* domains strip */
.domains { background: var(--alu-2); border-bottom: 1px solid var(--line); }
.domains .wrap { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.dom { display: grid; gap: .25rem; align-content: start; padding: 1.6rem 1.25rem 1.7rem; text-decoration: none; border-left: 1px solid var(--line); min-width: 0; }
.dom:first-child { border-left: 0; padding-left: 0; }
.dom .code { font-family: var(--f-mono); font-size: .75rem; letter-spacing: .14em; color: var(--copper); }
.dom b { font-family: var(--f-display); font-size: 1.5rem; font-weight: 600; }
.dom span:last-child { font-size: .9375rem; color: var(--ink-2); line-height: 1.55; }
.dom:hover b { color: var(--copper); }
@media (max-width: 860px) { .domains .wrap { grid-template-columns: 1fr 1fr; } .dom { padding: 1.25rem 1rem; } .dom:nth-child(odd) { border-left: 0; padding-left: 0; } .dom:nth-child(n+3) { border-top: 1px solid var(--line); } }

/* method rail */
.rail { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 10px; }
.rail .bracket { grid-column: 2 / -1; background: var(--copper); color: #FBF6F1; font-size: .9375rem; font-weight: 500; text-align: center; padding: .6rem 1rem; border-radius: 3px; }
.rail .spacer { grid-column: 1 / 2; }
.step { background: var(--graphite); color: var(--on-dark); border-radius: 4px; padding: 1.1rem 1rem 1.25rem; display: grid; gap: .4rem; align-content: start; min-width: 0; }
.step .n { font-family: var(--f-mono); font-size: .75rem; color: var(--copper-lt); letter-spacing: .1em; }
.step b { font-weight: 500; font-size: 1.0625rem; line-height: 1.4; }
.step.kr { background: var(--plate); color: var(--ink); border: 1.5px solid var(--ink); }
.step.kr .n { color: var(--copper); }
.rail-note { margin-top: 1.75rem; color: var(--ink-2); max-width: 44rem; }
.rail-note strong { color: var(--ink); }
@media (max-width: 860px) {
  .rail { grid-template-columns: 1fr; }
  .rail .bracket { grid-column: auto; order: 2; text-align: left; }
  .rail .spacer { display: none; }
  .step.kr { order: 1; }
  .step:not(.kr) { order: 3; }
}

/* numbers */
.nums { background: var(--copper); color: #FBF6F1; }
.nums .grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr) minmax(0,1.45fr) minmax(0,1fr); gap: 0; }
.num { padding: 2.25rem 1.5rem 2.25rem 0; border-left: 1px solid rgba(251,246,241,.35); padding-left: 1.5rem; display: grid; gap: .35rem; align-content: start; }
.num:first-child { border-left: 0; padding-left: 0; }
.num strong { font-family: var(--f-display); font-size: clamp(1.9rem, 1.4rem + 1.5vw, 2.75rem); font-weight: 600; line-height: 1.15; font-variant-numeric: tabular-nums; }
.num span { font-size: .9375rem; color: #F6E4D6; }
@media (max-width: 860px) {
  .nums .grid { grid-template-columns: minmax(0,1fr) minmax(0,1fr); }
  .num { border-left: 0; padding-left: 0; border-top: 1px solid rgba(251,246,241,.35); }
}
@media (max-width: 480px) { .nums .grid { grid-template-columns: 1fr; } }

/* compare */
.tbl { overflow-x: auto; border: 1px solid var(--line); border-radius: 4px; background: var(--plate); }
table { border-collapse: collapse; width: 100%; min-width: 640px; font-size: .9688rem; }
th, td { text-align: left; padding: 1rem 1.1rem; vertical-align: top; border-bottom: 1px solid var(--line); }
th { font-family: var(--f-mono); font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); font-weight: 500; background: var(--alu-2); }
tr:last-child td { border-bottom: 0; }
td:first-child { font-weight: 700; width: 26%; }
tr.us td { background: var(--graphite); color: var(--on-dark); }
tr.us td:first-child { color: var(--copper-lt); }

/* works */
.works { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.25rem 1rem; }
.work { display: grid; gap: .75rem; align-content: start; min-width: 0; }
.work .ph { aspect-ratio: 1 / 1; max-width: 100%; overflow: hidden; border-radius: 4px; background: var(--alu-2); }
.work .ph img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.work:hover .ph img { transform: scale(1.03); }
@media (prefers-reduced-motion: reduce) { .work .ph img { transition: none; } .work:hover .ph img { transform: none; } }
.work h3 { font-size: 1.0625rem; font-weight: 700; line-height: 1.4; }
.work p { font-size: .9375rem; color: var(--ink-2); line-height: 1.55; }
.chip { justify-self: start; font-family: var(--f-mono); font-size: .75rem; letter-spacing: .06em; padding: .2rem .55rem; border-radius: 3px; border: 1px solid var(--ink); }
.chip.done { background: var(--ink); color: var(--plate); }
.chip.wip { background: var(--copper); border-color: var(--copper); color: #FBF6F1; }
.chip.own { border-color: var(--line); color: var(--ink-3); }
.works-sub { margin: 3rem 0 1.25rem; font-family: var(--f-mono); font-size: .8125rem; letter-spacing: .14em; color: var(--ink-3); text-transform: uppercase; display: flex; align-items: center; gap: 1rem; }
.works-sub::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.work.text .ph { display: grid; align-content: end; padding: 1.25rem; background: var(--graphite); color: var(--on-dark); }
.work.text .ph b { font-family: var(--f-display); font-size: 1.35rem; line-height: 1.35; font-weight: 600; }
.work.text .ph small { font-family: var(--f-mono); color: var(--copper-lt); letter-spacing: .12em; font-size: .75rem; }
@media (max-width: 960px) { .works { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* infra */
.infra { width: 100%; border-collapse: collapse; min-width: 560px; }
.infra td { border-bottom: 1px solid var(--line-dk); padding: 1.05rem .5rem 1.05rem 0; color: var(--on-dark-2); }
.infra td:first-child { color: var(--on-dark); font-weight: 500; width: 30%; }
.infra td.code { font-family: var(--f-mono); font-size: .8125rem; color: var(--copper-lt); width: 4.5rem; white-space: nowrap; }
.infra tr:first-child td { border-top: 1px solid var(--line-dk); }
.dark .tbl-wrap { overflow-x: auto; }
.infra tr.grp th { text-align: left; font-family: var(--f-mono); font-size: .75rem; letter-spacing: .14em; font-weight: 500; color: var(--on-dark-2); background: transparent; padding: 1.6rem 0 .6rem; border-bottom: 1px solid var(--line-dk); }
.infra tr.grp:first-child th { padding-top: 0; }
.b2b-flow { list-style: none; margin: 0 0 2.5rem; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.b2b-flow li { background: var(--graphite-2); border: 1px solid var(--line-dk); border-radius: 4px; padding: .9rem 1rem; font-weight: 500; display: grid; gap: .2rem; }
.b2b-flow span { font-family: var(--f-mono); font-size: .75rem; color: var(--copper-lt); letter-spacing: .1em; }
.b2b-foot { margin-top: 1.75rem; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem 2rem; }
.b2b-foot .trust { margin-top: 0; max-width: 40rem; }
@media (max-width: 760px) { .b2b-flow { grid-template-columns: 1fr 1fr; } }
.trust { margin-top: 1.75rem; display: flex; gap: .75rem; align-items: baseline; color: var(--on-dark); }
.trust::before { content: ""; width: 1.5rem; height: 1px; background: var(--copper-lt); flex: none; transform: translateY(-.3rem); }

/* founder */
.founder { display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr); gap: clamp(2rem, 1rem + 4vw, 5rem); align-items: start; }
.founder img { width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; object-position: 50% 25%; border-radius: 4px; align-self: start; }
.facts { display: grid; margin-top: 2rem; border-top: 1px solid var(--line); }
.fact { display: grid; grid-template-columns: 9.5rem minmax(0, 1fr); gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--line); }
.fact b { font-family: var(--f-mono); font-weight: 500; color: var(--copper); font-size: .9375rem; }
.quote { margin-top: 2rem; font-family: var(--f-display); font-size: var(--s-3); line-height: 1.6; font-weight: 600; }
.career { margin-top: 2rem; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.career div { background: var(--plate); border-radius: 4px; padding: 1.1rem 1.1rem 1.25rem; display: grid; gap: .35rem; align-content: start; }
.career small { font-family: var(--f-mono); font-size: .75rem; letter-spacing: .1em; color: var(--copper); }
.career p { font-size: .9375rem; line-height: 1.55; color: var(--ink-2); }
.career p strong { color: var(--ink); display: block; font-size: 1rem; margin-bottom: .2rem; }
@media (max-width: 860px) { .founder { grid-template-columns: 1fr; } .founder img { max-width: 240px; } .career { grid-template-columns: 1fr; } }
@media (max-width: 420px) { .fact { grid-template-columns: 1fr; gap: .15rem; } }

/* partners */
.flow { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr); gap: .75rem; align-items: stretch; }
.flow .box { background: var(--plate); border-radius: 4px; padding: 1.4rem; display: grid; gap: .4rem; align-content: start; }
.flow .box.us { background: var(--graphite); color: var(--on-dark); }
.flow .box small { font-family: var(--f-mono); font-size: .75rem; letter-spacing: .1em; color: var(--copper); }
.flow .box.us small { color: var(--copper-lt); }
.flow .box b { font-size: 1.0625rem; line-height: 1.5; font-weight: 500; }
.flow .arr { align-self: center; color: var(--copper); font-family: var(--f-mono); }
.benefits { margin-top: 2rem; display: grid; border-top: 1px solid var(--line); }
.benefits p { padding: 1rem 0; border-bottom: 1px solid var(--line); color: var(--ink-2); }
.benefits strong { color: var(--ink); }
@media (max-width: 860px) { .flow { grid-template-columns: 1fr; } .flow .arr { justify-self: center; transform: rotate(90deg); } }

/* faq */
.faq { border-top: 1px solid var(--line); max-width: 52rem; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 1.15rem 2.5rem 1.15rem 0; font-weight: 500; font-size: 1.0625rem; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: .25rem; top: 1rem; font-family: var(--f-mono); font-size: 1.25rem; color: var(--copper); }
.faq details[open] summary::after { content: "−"; }
.faq .a { padding: 0 0 1.25rem; color: var(--ink-2); max-width: 44rem; }

/* contact */
.contact { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(2rem, 1rem + 4vw, 5rem); }
.lines { display: grid; gap: 1.1rem; margin-top: 2rem; }
.line small { display: block; font-family: var(--f-mono); font-size: .75rem; letter-spacing: .12em; color: var(--copper-lt); }
.line .v { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; font-size: 1.125rem; user-select: all; }
.copy { font-family: var(--f-mono); font-size: .75rem; background: transparent; color: var(--on-dark-2); border: 1px solid var(--line-dk); border-radius: 3px; padding: .25rem .55rem; cursor: pointer; user-select: none; }
.copy:hover { color: var(--on-dark); }
form { display: grid; gap: 1rem; background: var(--graphite-2); border-radius: 4px; padding: clamp(1.25rem, 1rem + 1.5vw, 2rem); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.fld { display: grid; gap: .35rem; min-width: 0; }
.fld label { font-size: .875rem; color: var(--on-dark-2); }
.fld label i { font-style: normal; color: var(--copper-lt); }
input, select, textarea { font: inherit; font-size: 1rem; color: var(--on-dark); background: var(--graphite); border: 1px solid var(--line-dk); border-radius: 3px; padding: .7rem .8rem; width: 100%; min-width: 0; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--copper-lt); }
textarea { min-height: 140px; resize: vertical; }
.consent { display: flex; gap: .6rem; align-items: flex-start; font-size: .875rem; color: var(--on-dark-2); }
.consent input { width: 1.1rem; height: 1.1rem; margin-top: .3rem; flex: none; accent-color: var(--copper); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-msg { font-size: .9375rem; color: var(--copper-lt); min-height: 1.5em; }
form .btn { justify-self: start; cursor: pointer; font-size: 1rem; }
@media (max-width: 860px) { .contact { grid-template-columns: 1fr; } }
@media (max-width: 520px) { .row2 { grid-template-columns: 1fr; } }

footer { background: var(--graphite); color: var(--on-dark-2); border-top: 1px solid var(--line-dk); padding-block: 2.5rem calc(2.5rem + env(safe-area-inset-bottom, 0px)); font-size: .875rem; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; }
footer b { color: var(--on-dark); font-family: var(--f-display); }

/* nav extras + b2b page */
.nav .b2b { color: var(--on-dark); border-left: 1px solid var(--line-dk); padding-left: 1.5rem; }
.nav a[aria-current="page"], .menu .panel a[aria-current="page"] { color: var(--copper-lt); }
.hero.compact { padding-block: clamp(3rem, 2rem + 4vw, 5.5rem); }
.hero.compact .wrap { display: block; }
.hero.compact .hero-copy { padding-bottom: 0; max-width: 46rem; }
.roles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.roles div { background: var(--plate); border-radius: 4px; padding: 1.4rem; display: grid; gap: .4rem; align-content: start; }
.roles small { font-family: var(--f-mono); font-size: .75rem; letter-spacing: .1em; color: var(--copper); }
.roles b { font-size: 1.0625rem; line-height: 1.45; }
.roles p { font-size: .9375rem; color: var(--ink-2); line-height: 1.6; }
.flow-light .b2b-flow li { background: var(--plate); border-color: var(--line); color: var(--ink); }
.flow-light .b2b-flow span { color: var(--copper); }
@media (max-width: 860px) { .roles { grid-template-columns: 1fr; } }