:root {
  --bg: #0a0b0f;
  --bg-soft: #0f1015;
  --panel: rgba(255,255,255,.04);
  --panel-solid: #14151c;
  --line: rgba(255,255,255,.1);
  --line-soft: rgba(255,255,255,.06);
  --ink: #ffffff;
  --text: rgba(255,255,255,.86);
  --muted: rgba(255,255,255,.6);
  --yellow: #ffd23f;
  --accent: #ffd23f;
  --accent-soft: rgba(255,210,63,.14);
  --ember: #ff7a1a;
  --warn: #ffb347;
  --ok: #5fe0a8;
  --navy: #0b1a3a;
  --max: 1160px;
  --radius: 14px;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Pretendard Variable", Pretendard, "Apple SD Gothic Neo", -apple-system, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg);
  -webkit-font-smoothing: antialiased; word-break: keep-all;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--max); margin: 0 auto; padding-inline: 24px; }

/* ── header ─────────────────────────────── */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 50; background: transparent; border-bottom: 1px solid transparent; transition: background .25s ease, border-color .25s ease; }
.site-header.scrolled { background: rgba(10,11,15,.82); backdrop-filter: saturate(160%) blur(12px); border-bottom-color: var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.wm { display: inline-flex; align-items: center; gap: 8px; font-size: 25px; font-weight: 800; letter-spacing: -.02em; color: #fff; line-height: 1; }
.wm .flame { width: 20px; height: 24px; filter: drop-shadow(0 0 10px rgba(255,138,30,.55)); }
.ft-left .wm .flame { width: 17px; height: 20px; }
.nav { display: flex; align-items: center; gap: 26px; font-size: 14.5px; font-weight: 600; color: rgba(255,255,255,.8); }
.nav a { position: relative; padding: 4px 0; transition: color .15s ease; }
.nav a:hover { color: #fff; }
.nav a:not(.cta)::after { content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 3px; background: var(--yellow); transform: scaleX(0); transform-origin: left; transition: transform .2s ease; }
.nav a.active:not(.cta) { color: #fff; }
.nav a.active:not(.cta)::after { transform: scaleX(1); }
.nav .cta { color: var(--yellow); }
@media (max-width: 860px) {
  .nav a:not(.cta) { display: none; }
  .nav .cta { border: 1.5px solid currentColor; border-radius: 8px; padding: 7px 14px; font-size: 14px; }
  .site-header .wrap { height: 64px; }
  .brand .wm { font-size: 22px; }
}

/* ── type ───────────────────────────────── */
h1 { font-size: clamp(34px, 4.8vw, 60px); line-height: 1.16; letter-spacing: -.03em; font-weight: 800; color: var(--ink); margin: 0 0 20px; }
h2 { font-size: clamp(25px, 3.1vw, 35px); line-height: 1.26; letter-spacing: -.02em; font-weight: 800; color: var(--ink); margin: 0 0 14px; }
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }
.lead { font-size: 17px; color: var(--muted); max-width: 720px; margin: 0 0 38px; text-wrap: balance; overflow-wrap: anywhere; }
br.d { display: none; }
@media (min-width: 981px) { br.d { display: inline; } }
.kicker { font-family: var(--mono); font-size: 12.5px; letter-spacing: .18em; color: var(--yellow); margin: 0 0 18px; }
section { padding: 96px 0; }
section.soft { background: var(--bg-soft); }

/* reveal + typing */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); transition-delay: var(--delay, 0s); }
.reveal.in { opacity: 1; transform: none; }
h1.typing, h2.typing { text-wrap: initial; }
.caret { display: inline-block; width: .12em; height: .95em; margin-left: .06em; background: var(--yellow); vertical-align: -.1em; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ── buttons ────────────────────────────── */
.btns { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.btn { display: inline-block; padding: 14px 24px; border-radius: 10px; font-weight: 700; font-size: 15px; transition: transform .12s ease, background .12s ease, border-color .12s ease; }
.btn:active { transform: translateY(1px); }
.btn-accent { background: var(--yellow); color: var(--navy); }
.btn-accent:hover { background: #ffdb62; }
.btn-ghost { border: 1.5px solid rgba(255,255,255,.3); color: #fff; }
.btn-ghost:hover { border-color: var(--yellow); color: var(--yellow); }

/* ── hero ───────────────────────────────── */
.hero { position: relative; overflow: hidden; padding: 170px 0 110px; text-align: center; }
.hero .wrap { position: relative; }
.hero .lead { margin: 0 auto 30px; max-width: 820px; }
.horizon { position: absolute; left: 50%; transform: translateX(-50%); width: 170vw; max-width: 2400px; height: 640px; pointer-events: none;
  background: radial-gradient(ellipse 52% 62% at 50% 100%, rgba(255,110,20,.62) 0%, rgba(255,150,40,.3) 32%, rgba(255,130,30,.1) 55%, rgba(255,122,26,0) 72%); }
.hero .horizon { bottom: -230px; }
.hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 220px; background: linear-gradient(180deg, rgba(255,122,26,0), rgba(255,122,26,.06) 55%, rgba(255,122,26,.12)); pointer-events: none; }
.hero .wrap { z-index: 1; }
.hero::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 1px 1px, rgba(255,255,255,.07) 1px, transparent 0) 0 0/24px 24px; mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 20%, transparent 80%); pointer-events: none; }

/* status panel */
.status { margin: 44px auto 0; max-width: 860px; text-align: left; background: rgba(12,13,18,.9); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; font-family: var(--mono); box-shadow: 0 40px 80px -40px rgba(0,0,0,.9), 0 0 0 1px rgba(255,255,255,.02); backdrop-filter: blur(6px); }
.s-head { display: flex; align-items: center; gap: 10px; padding: 11px 16px; border-bottom: 1px solid var(--line); font-size: 11.5px; color: var(--muted); }
.s-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px rgba(95,224,168,.18); }
.s-head em { font-style: normal; }
.s-note { margin-left: 6px; padding: 1px 7px; border: 1px solid var(--line); border-radius: 999px; font-size: 10px; color: var(--muted); font-family: inherit; }
.s-time { margin-left: auto; }
.s-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.s-cell { padding: 16px; border-bottom: 1px solid var(--line-soft); border-right: 1px solid var(--line-soft); display: grid; gap: 3px; }
.s-cell:last-child { border-right: 0; }
@media (max-width: 720px) { .s-grid { grid-template-columns: repeat(2, 1fr); } .s-cell:nth-child(2) { border-right: 0; } }
.s-lab { font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.s-val { font-size: 22px; color: var(--ink); font-weight: 600; letter-spacing: -.01em; }
.s-sub { font-size: 11px; color: var(--muted); }
.s-sub.ok { color: var(--ok); }
.s-log { padding: 12px 16px 14px; font-size: 11.5px; display: grid; gap: 6px; }
.s-log p { margin: 0; display: flex; gap: 12px; color: var(--text); text-align: left; }
.s-log time { color: var(--muted); flex: none; }
.s-log .ok { color: var(--ok); }
.s-log .warn { color: var(--warn); }

/* stats row (Goldsky 방식: 띠 없이 숫자만) */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 64px; padding-top: 40px; border-top: 1px solid var(--line); }
@media (max-width: 800px) { .stat-row { grid-template-columns: repeat(2, 1fr); } }
.stat-row div { display: grid; gap: 6px; text-align: left; }
.stat-row b { font-family: var(--mono); font-size: clamp(30px, 3.6vw, 44px); font-weight: 600; letter-spacing: -.02em; line-height: 1; color: var(--ink); }
.stat-row span { font-size: 13.5px; color: var(--muted); }

/* ── cards (services) ───────────────────── */
.grid { display: grid; gap: 16px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 900px) { .grid.cols-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid.cols-3 { grid-template-columns: 1fr; } }
.card { position: relative; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 26px 22px; display: grid; align-content: start; gap: 10px; transition: border-color .15s ease, background .15s ease; }
.card:hover { border-color: rgba(255,210,63,.45); background: rgba(255,255,255,.055); }
.card::after { content: "→"; position: absolute; right: 22px; top: 22px; color: var(--muted); font-size: 15px; transition: color .15s ease, transform .15s ease; }
.card:hover::after { color: var(--yellow); transform: translateX(3px); }
.card h3 { font-size: 18px; margin: 0; padding-right: 26px; color: var(--ink); letter-spacing: -.01em; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.65; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.chips span { font-family: var(--mono); font-size: 11px; color: var(--muted); border: 1px solid var(--line); border-radius: 6px; padding: 3px 8px; line-height: 1.4; white-space: nowrap; }

/* ── diagram ────────────────────────────── */
.diagram { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; overflow-x: auto; }
.diagram svg { width: 100%; min-width: 720px; height: auto; display: block; }
.d-lab { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; fill: var(--muted); }
.d-box rect { fill: #14151c; stroke: #34363f; stroke-width: 1.2; }
.d-box.out rect { fill: rgba(255,210,63,.1); stroke: var(--yellow); }
.d-box.mkt rect { fill: #14151c; stroke: #34363f; stroke-dasharray: 4 3; }
.d-t { font-family: "Pretendard Variable", Pretendard, sans-serif; font-size: 16px; font-weight: 700; fill: var(--ink); text-anchor: middle; }
.d-t.sm { font-size: 13.5px; }
.d-s { font-family: var(--mono); font-size: 11px; fill: var(--muted); text-anchor: middle; }
.d-s.dim { fill: rgba(255,255,255,.4); }
.d-ln { stroke: #8b8f9c; stroke-width: 1.5; fill: none; }

/* ── steps ──────────────────────────────── */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, 1fr); gap: 14px; } }
@media (max-width: 600px) { .steps { grid-template-columns: 1fr; } }
.steps li { position: relative; padding: 24px 22px 24px 26px; background: var(--panel); border: 1px solid var(--line); display: grid; gap: 8px; align-content: start; }
.steps li:first-child { border-radius: 14px 0 0 14px; } .steps li:last-child { border-radius: 0 14px 14px 0; }
.steps li + li { border-left: 0; }
.steps li::before { content: ""; position: absolute; left: 0; top: 22px; bottom: 22px; width: 3px; background: var(--yellow); }
@media (max-width: 900px) { .steps li, .steps li:first-child, .steps li:last-child { border-radius: 12px; border-left: 1px solid var(--line); } }
.steps .num { font-family: var(--mono); font-size: 11.5px; color: var(--yellow); letter-spacing: .1em; }
.steps h3 { font-size: 17.5px; margin: 0; color: var(--ink); }
.steps p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }

/* ── who ────────────────────────────────── */
.who { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 980px) { .who { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .who { grid-template-columns: 1fr; } }
.who > div { border-top: 1px solid var(--line); padding-top: 18px; }
.who h3 { font-size: 17px; margin: 0 0 8px; color: var(--ink); letter-spacing: -.01em; }
.who p { margin: 0; color: var(--muted); font-size: 14.5px; }

/* ── faq ────────────────────────────────── */
.faq-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: start; }
@media (max-width: 900px) { .faq-grid { grid-template-columns: 1fr; gap: 24px; } }
.faq-side { position: sticky; top: 110px; }
.faq-side .lead { margin-bottom: 0; }
.faq { display: grid; gap: 10px; }
.faq details { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 0 20px; }
.faq summary { cursor: pointer; list-style: none; padding: 16px 0; font-weight: 700; color: var(--ink); font-size: 16px; display: flex; align-items: center; gap: 14px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; margin-left: auto; color: var(--yellow); font-weight: 400; font-size: 20px; }
.faq details[open] summary::after { content: "–"; }
.faq .qn { font-family: var(--mono); font-size: 11.5px; color: var(--yellow); letter-spacing: .06em; flex: none; }
.faq p { margin: 0 0 18px; padding-left: 36px; color: var(--muted); font-size: 15px; }

/* ── contact (protofire 방식: 한 상자) ─── */
.contact { position: relative; overflow: hidden; padding: 80px 0 90px; }
.contact .horizon.bottom { bottom: -340px; height: 700px; opacity: .7; }
.contact .wrap { position: relative; }
.apply { border: 1px solid rgba(255,255,255,.12); border-radius: 18px; padding: 30px 32px 28px; background: rgba(12,13,18,.55); backdrop-filter: blur(8px); box-shadow: 0 40px 80px -50px rgba(0,0,0,.9); }
@media (max-width: 700px) { .apply { padding: 24px 18px; } }
.apply-head { margin-bottom: 22px; }
@media (max-width: 900px) { .apply-head { flex-direction: column; } }
.apply-head h2 { margin-bottom: 10px; }
.apply-head .lead { margin: 0; max-width: 620px; }
.reader { flex: none; display: flex; align-items: center; gap: 12px; padding: 12px 16px 12px 12px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255,255,255,.03); }
.reader .rav { display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: var(--yellow); color: var(--navy); font-family: var(--mono); font-weight: 600; font-size: 12.5px; }
.reader small { display: block; font-size: 11.5px; color: var(--muted); }
.reader b { font-size: 14px; color: var(--ink); }
.form { display: grid; gap: 12px; }
.form .hp { position: absolute; left: -9999px; }
.form label { display: block; font-size: 13.5px; font-weight: 600; color: var(--text); }
.form label > input, .form label > textarea { margin-top: 7px; }
.form .req { color: var(--yellow); }
.form input, .form textarea { font: inherit; font-size: 14.5px; font-weight: 400; padding: 10px 13px; border: 1px solid rgba(255,255,255,.14); border-radius: 10px; background: rgba(255,255,255,.05); color: var(--ink); width: 100%; transition: border-color .15s ease, background .15s ease; }
.form input::placeholder, .form textarea::placeholder { color: rgba(255,255,255,.35); }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--yellow); background: rgba(255,255,255,.07); box-shadow: 0 0 0 3px var(--accent-soft); }
.form textarea { resize: vertical; }
.form .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .form .row2 { grid-template-columns: 1fr; } }
.form .flab { display: block; font-size: 13.5px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.toggles { display: flex; flex-wrap: wrap; gap: 8px; }
.toggles button { font: inherit; font-size: 13.5px; font-weight: 600; color: var(--text); padding: 8px 14px; border-radius: 999px; border: 1px solid rgba(255,255,255,.16); background: rgba(255,255,255,.04); cursor: pointer; transition: all .15s ease; }
.toggles button:hover { border-color: rgba(255,210,63,.6); }
.toggles button.on { background: var(--yellow); color: var(--navy); border-color: var(--yellow); }
.submit-row { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; margin-top: 6px; }
.form button.btn { border: 0; cursor: pointer; font: inherit; font-weight: 700; }
.form button.btn:disabled { opacity: .6; cursor: default; }
.form-note { margin: 0; font-size: 13px; color: var(--muted); max-width: 520px; }
.form-msg { margin: 0; font-size: 13.5px; min-height: 1em; color: var(--muted); }
.form-msg.err { color: #ff8a7a; }
.thanks b { font-size: 18px; color: var(--ink); }
.thanks p { margin: 6px 0 0; color: var(--muted); }

/* ── footer ─────────────────────────────── */
footer { padding: 44px 0 36px; background: #06070a; border-top: 1px solid var(--line-soft); }
.ft { display: grid; grid-template-columns: 1.2fr 1fr; gap: 24px 40px; align-items: start; }
@media (max-width: 800px) { .ft { grid-template-columns: 1fr; } }
.ft-left .wm { font-size: 22px; }
.ft-left p { margin: 12px 0 0; font-size: 13.5px; color: var(--muted); max-width: 420px; }
.ft-links { display: flex; flex-wrap: wrap; gap: 8px 22px; font-size: 13.5px; font-weight: 600; color: rgba(255,255,255,.75); justify-content: flex-end; }
@media (max-width: 800px) { .ft-links { justify-content: flex-start; } }
.ft-links a:hover { color: #fff; }
.ft-copy { grid-column: 1 / -1; padding-top: 18px; border-top: 1px solid var(--line-soft); font-size: 12.5px; color: var(--muted); }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .reveal { opacity: 1; transform: none; transition: none; } .script .rot { transition: none; } }

/* hero heading measures */
.hero h1 { max-width: 900px; margin-left: auto; margin-right: auto; }
.hero .kicker { text-align: center; }

/* ── product blocks ─────────────────────── */
.prod { display: grid; grid-template-columns: 1fr 1fr; gap: 88px; align-items: center; padding: 56px 0; border-top: 1px solid var(--line-soft); }
.prod:first-of-type { border-top: 0; padding-top: 10px; }
.prod.flip .prod-text { order: 2; } .prod.flip .prod-vis { order: 1; }
@media (max-width: 900px) { .prod { grid-template-columns: 1fr; gap: 26px; padding: 40px 0; } .prod.flip .prod-text { order: 1; } .prod.flip .prod-vis { order: 2; } }
.p-k { display: block; font-family: var(--mono); font-size: 11.5px; letter-spacing: .18em; color: var(--yellow); margin-bottom: 12px; }
.prod h3 { font-size: clamp(21px, 2.3vw, 27px); line-height: 1.3; letter-spacing: -.02em; margin: 0 0 12px; color: var(--ink); }
.prod p { margin: 0 0 18px; color: var(--muted); font-size: 15.5px; max-width: 560px; }
.feat { display: grid; grid-template-columns: 38px 1fr; gap: 12px; align-items: start; margin-top: 10px; }
.f-lab { font-family: var(--mono); font-size: 10.5px; letter-spacing: .14em; color: var(--muted); padding-top: 6px; }
.chips.dim span { color: rgba(255,255,255,.5); border-color: var(--line-soft); }
.mock { background: rgba(12,13,18,.9); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; font-family: var(--mono); box-shadow: 0 40px 80px -40px rgba(0,0,0,.9); }
.m-head { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--line); font-size: 11px; color: var(--muted); }
.m-head em { font-style: normal; }
.m-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 3px rgba(95,224,168,.18); }
.m-search { margin: 14px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 9px; font-size: 12.5px; color: var(--muted); display: flex; justify-content: space-between; }
.m-search b { color: var(--navy); background: var(--yellow); font-weight: 600; font-size: 11px; padding: 1px 8px; border-radius: 5px; }
.m-rows { padding: 4px 14px 14px; display: grid; gap: 6px; }
.m-rows p { margin: 0; display: grid; grid-template-columns: 84px 1fr auto; gap: 12px; font-size: 12px; color: var(--text); padding: 7px 0; border-bottom: 1px solid var(--line-soft); }
.m-rows p:last-child { border-bottom: 0; }
.m-k { color: var(--muted); }
.mock .ok { color: var(--ok); } .mock .warn { color: var(--warn); }
.mock.code pre { margin: 0; padding: 14px 16px; font-size: 12px; line-height: 1.7; color: var(--text); overflow-x: auto; }
.m-flow { display: flex; align-items: center; gap: 8px; padding: 16px 14px 8px; font-size: 12px; color: var(--text); flex-wrap: wrap; }
.m-flow span { border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; background: rgba(255,255,255,.03); }
.m-flow i { flex: 1; min-width: 12px; height: 1px; background: rgba(255,255,255,.25); position: relative; }
.m-flow i::after { content: ""; position: absolute; right: -1px; top: -3px; border: 3.5px solid transparent; border-left-color: rgba(255,255,255,.45); }
.m-infra { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding: 14px; }
.m-infra > div { border: 1px dashed rgba(255,255,255,.2); border-radius: 10px; padding: 10px; display: grid; gap: 6px; }
.m-infra small { font-size: 10px; letter-spacing: .14em; color: var(--muted); }
.m-infra b { font-weight: 500; font-size: 12px; color: var(--text); background: rgba(255,255,255,.05); border: 1px solid var(--line-soft); border-radius: 6px; padding: 5px 8px; }
.case-line { display: grid; grid-template-columns: 38px 1fr; gap: 12px; margin: 18px 0 0; padding-top: 16px; border-top: 1px dashed var(--line); font-size: 14px; color: var(--text); max-width: none; }
.case-line .f-lab { color: var(--yellow); padding-top: 4px; }
.case-line > span:last-child { color: rgba(255,255,255,.78); }

/* ── 분위기: 불씨, 블록 뒤 빛, 배경 큰 글자 ── */
.hero .embers { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.prod { position: relative; }
.prod > * { position: relative; z-index: 1; }
.prod-vis { position: relative; }
.p-glow { position: absolute; left: 50%; top: 50%; width: 130%; height: 130%; transform: translate(-50%, -50%); background: radial-gradient(ellipse 55% 55% at 50% 50%, rgba(255,122,26,.38), rgba(255,122,26,0) 70%); filter: blur(14px); pointer-events: none; z-index: 0; }
.prod-vis .mock { position: relative; z-index: 1; }
section.soft { background: linear-gradient(180deg, #0f1015, #0c0d12); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
#arch { position: relative; overflow: hidden; }
#arch::before { content: ""; position: absolute; left: 50%; top: -260px; transform: translateX(-50%); width: 900px; height: 520px; background: radial-gradient(ellipse 50% 50% at 50% 50%, rgba(255,122,26,.12), rgba(255,122,26,0) 70%); pointer-events: none; }
#arch .wrap { position: relative; }

/* ── data flow graph ────────────────────── */
#flow { position: relative; overflow: hidden; padding: 60px 0 56px; }
#flow::before { content: ""; position: absolute; left: 50%; top: 40%; transform: translate(-50%, -50%); width: 900px; height: 600px; background: radial-gradient(ellipse 50% 50% at 50% 50%, rgba(255,122,26,.12), rgba(255,122,26,0) 70%); pointer-events: none; }
#flow .wrap { position: relative; }
.flow-wrap { overflow-x: auto; }
.flow-map { width: 100%; min-width: 760px; height: auto; display: block; }
.fl-edge { fill: none; stroke: rgba(255,255,255,.16); stroke-width: 1.2; }
.fl-edge.dim { stroke-dasharray: 3 5; stroke: rgba(255,255,255,.1); }
.fl-dot { fill: var(--ember); filter: drop-shadow(0 0 4px rgba(255,138,30,.8)); }
.fl-node rect { fill: #14151c; stroke: rgba(255,255,255,.16); stroke-width: 1; }
.fl-l { font-family: "Pretendard Variable", Pretendard, sans-serif; font-size: 13.5px; font-weight: 700; fill: var(--ink); }
.fl-s { font-family: var(--mono); font-size: 10.5px; fill: var(--muted); }
.nav .cta { border: 1.5px solid currentColor; border-radius: 9px; padding: 8px 16px; font-size: 14px; }
.nav .cta:hover { background: var(--yellow); color: var(--navy); }
.flow-cap { margin: 10px 0 0; text-align: center; font-family: var(--mono); font-size: 11.5px; letter-spacing: .06em; color: var(--muted); }
.form .row3 { display: grid; grid-template-columns: 1fr 1fr 1.3fr; gap: 12px; }
@media (max-width: 760px) { .form .row3 { grid-template-columns: 1fr; } }
.apply-head .lead { font-size: 15.5px; }

/* ── 블록을 잇는 세로 데이터 선 ─────────── */
.prods { position: relative; }
.prods::before { content: ""; position: absolute; left: 50%; top: 40px; bottom: 40px; width: 1px; transform: translateX(-.5px);
  background: linear-gradient(180deg, rgba(255,160,70,.12), rgba(255,160,70,.3) 35%, rgba(255,160,70,.5) 70%, rgba(255,160,70,.55) 92%, rgba(255,160,70,0)); pointer-events: none; }
.prods::after { content: ""; position: absolute; left: 50%; top: 40px; bottom: 40px; width: 1px; transform: translateX(-.5px);
  background: linear-gradient(180deg, transparent 0%, rgba(255,210,120,.9) 50%, transparent 100%); background-size: 100% 220px; background-repeat: no-repeat; animation: pulse-line 5.5s linear infinite; pointer-events: none; }
@keyframes pulse-line { from { background-position: 0 -220px; } to { background-position: 0 calc(100% + 220px); } }
.prod { position: relative; }
.prod::before { content: ""; position: absolute; left: 50%; top: 50%; width: 10px; height: 10px; margin: -5px 0 0 -5px; border-radius: 50%; background: var(--ember); box-shadow: 0 0 0 4px rgba(255,122,26,.18), 0 0 18px rgba(255,138,30,.7); z-index: 1; }
.prod > * { position: relative; z-index: 1; }
@media (max-width: 900px) {
  .prods::before, .prods::after { left: 6px; transform: none; top: 20px; bottom: 20px; }
  .prod { padding-left: 28px; }
  .prod::before { left: 6px; top: 50.5px; margin-left: -4.5px; width: 9px; height: 9px; }
  .prod:first-of-type::before { top: 20.5px; }
}
@media (prefers-reduced-motion: reduce) { .prods::after { animation: none; display: none; } }