/* Itda website — shared styles (landing + getting started). No build step. */
:root {
  --bg: #0c0b16;
  --bg-2: #121122;
  --surface: #17162a;
  --surface-2: #1e1c35;
  --line: rgba(255, 255, 255, .08);
  --line-2: rgba(255, 255, 255, .14);
  --text: #f1f0fa;
  --text-2: #b7b4d3;
  --text-3: #8b88aa;
  --indigo: #4744b0;
  --indigo-2: #6f6cf0;
  --violet: #a4a1ff;
  --coral: #ff6a43;
  --teal: #33d1c2;
  --accent: #a4a1ff;
  --accent-ink: #15133a;
  --glow-1: rgba(98, 92, 255, .38);
  --glow-2: rgba(255, 106, 67, .22);
  --glow-3: rgba(51, 209, 194, .18);
  --radius: 18px;
  --shadow: 0 30px 80px rgba(3, 2, 15, .55), 0 8px 24px rgba(3, 2, 15, .35);
  --maxw: 1180px;
  --font: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif;
  --mono: "JetBrains Mono", "Cascadia Mono", ui-monospace, Consolas, monospace;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f6fc;
    --bg-2: #efedf8;
    --surface: #ffffff;
    --surface-2: #f2f0fa;
    --line: rgba(25, 22, 60, .09);
    --line-2: rgba(25, 22, 60, .16);
    --text: #16142d;
    --text-2: #4c4968;
    --text-3: #6d6a8a;
    --accent: #4744b0;
    --accent-ink: #ffffff;
    --glow-1: rgba(98, 92, 255, .20);
    --glow-2: rgba(255, 106, 67, .14);
    --glow-3: rgba(51, 209, 194, .12);
    --shadow: 0 30px 70px rgba(38, 37, 95, .18), 0 6px 18px rgba(38, 37, 95, .10);
    color-scheme: light;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.65 var(--font); letter-spacing: -.005em;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 12px; top: -48px; z-index: 100; padding: 10px 14px; border-radius: 10px; background: var(--accent); color: var(--accent-ink); text-decoration: none; font-weight: 700; }
.skip:focus { top: 12px; }

/* language switch: content carries both, the root picks one */
:root[data-lang="ko"] [lang="en"]:not(html) { display: none !important; }
:root[data-lang="en"] [lang="ko"]:not(html) { display: none !important; }

.wrap { width: min(var(--maxw), 100% - 40px); margin-inline: auto; }

/* ------------------------------------------------ nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(160%) blur(16px); -webkit-backdrop-filter: saturate(160%) blur(16px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid transparent; transition: border-color .2s;
}
.nav.scrolled { border-bottom-color: var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 22px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; font-size: 19px; letter-spacing: -.02em; }
.brand img { width: 32px; height: 32px; border-radius: 9px; box-shadow: 0 4px 14px rgba(71, 68, 176, .45); }
.brand small { font-weight: 600; color: var(--text-3); font-size: 13px; margin-left: 2px; }
.nav-links { display: flex; gap: 4px; margin-left: 8px; }
.nav-links a { text-decoration: none; color: var(--text-2); font-size: 14.5px; font-weight: 550; padding: 6px 10px; border-radius: 8px; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); background: var(--surface-2); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.lang { display: inline-flex; padding: 3px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--line); }
.lang button { border: 0; background: transparent; color: var(--text-3); font: 650 12.5px var(--font); padding: 4px 9px; border-radius: 7px; cursor: pointer; }
.lang button[aria-pressed="true"] { background: var(--surface); color: var(--text); box-shadow: 0 1px 3px rgba(0, 0, 0, .2); }
.icon-btn { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; color: var(--text-2); border: 1px solid var(--line); background: var(--surface-2); }
.icon-btn:hover { color: var(--text); border-color: var(--line-2); }
.icon-btn svg { width: 19px; height: 19px; }

/* ------------------------------------------------ buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  height: 46px; padding: 0 20px; border-radius: 12px; border: 1px solid var(--line-2);
  font: 700 15.5px var(--font); text-decoration: none; color: var(--text); background: var(--surface-2);
  transition: transform .15s, box-shadow .2s, background .2s; white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); border-color: color-mix(in srgb, var(--accent) 45%, var(--line-2)); }
.btn svg { width: 19px; height: 19px; flex: none; }
.btn.primary {
  border: 0; color: #fff;
  background: linear-gradient(135deg, #5a56e0 0%, #4744b0 55%, #3a3796 100%);
  box-shadow: 0 10px 30px rgba(71, 68, 176, .45), inset 0 1px 0 rgba(255, 255, 255, .18);
}
.btn.primary:hover { box-shadow: 0 14px 36px rgba(71, 68, 176, .55), inset 0 1px 0 rgba(255, 255, 255, .2); }
.btn.small { height: 38px; padding: 0 14px; font-size: 14px; border-radius: 10px; }
.btn .sub { font-weight: 550; opacity: .75; font-size: 13px; }

/* ------------------------------------------------ hero */
.hero { position: relative; padding: 76px 0 40px; isolation: isolate; }
.hero::before {
  content: ""; position: absolute; inset: -120px 0 auto; height: 900px; z-index: -1; pointer-events: none;
  background:
    radial-gradient(600px 380px at 22% 18%, var(--glow-1), transparent 70%),
    radial-gradient(520px 340px at 82% 8%, var(--glow-2), transparent 70%),
    radial-gradient(560px 360px at 70% 62%, var(--glow-3), transparent 72%);
  filter: blur(8px);
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 55% at 50% 25%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 55% at 50% 25%, #000 30%, transparent 75%);
  opacity: .55;
}
.hero-copy { text-align: center; max-width: 860px; margin-inline: auto; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px 6px 8px; border-radius: 999px;
  border: 1px solid var(--line-2); background: color-mix(in srgb, var(--surface) 70%, transparent);
  font-size: 13.5px; font-weight: 600; color: var(--text-2);
}
.eyebrow .tag { padding: 2px 8px; border-radius: 999px; background: linear-gradient(135deg, var(--coral), #ff8d5c); color: #fff; font-size: 12px; font-weight: 800; }
h1.title {
  margin: 22px 0 18px; font-size: clamp(42px, 7.2vw, 86px); line-height: 1.04; letter-spacing: -.045em; font-weight: 850;
}
.grad {
  background: linear-gradient(100deg, var(--violet) 0%, #c9b8ff 30%, var(--coral) 62%, var(--teal) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
@media (prefers-color-scheme: light) {
  .grad { background: linear-gradient(100deg, #4744b0 0%, #7c4dd6 35%, #ff6a43 68%, #12a596 100%); -webkit-background-clip: text; background-clip: text; }
}
.lead { font-size: clamp(17px, 2vw, 20px); color: var(--text-2); max-width: 680px; margin: 0 auto; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 32px; }
.also { margin: 14px 0 0; text-align: center; font-size: 14px; }
.also a { color: var(--text-2); text-decoration: none; border-bottom: 1px solid currentColor; }
.also a:hover { color: var(--text); }
.meta { margin-top: 16px; font-size: 13.5px; color: var(--text-3); display: flex; gap: 8px 18px; justify-content: center; flex-wrap: wrap; }
.meta span { display: inline-flex; align-items: center; gap: 6px; }
.meta svg { width: 15px; height: 15px; color: var(--teal); }

/* product shot */
.stage { position: relative; margin: 64px auto 0; max-width: 1080px; padding-bottom: 40px; }
.window {
  position: relative; border-radius: 16px; overflow: hidden; background: #1c1b1f;
  border: 1px solid var(--line-2); box-shadow: var(--shadow);
  transform: perspective(1800px) rotateX(6deg); transform-origin: 50% 0;
}
.window .chrome { display: flex; align-items: center; gap: 8px; height: 34px; padding: 0 14px; background: #202020; border-bottom: 1px solid rgba(255, 255, 255, .06); }
.window .chrome i { width: 11px; height: 11px; border-radius: 50%; background: #3a3a3e; }
.window .chrome b { margin-left: auto; margin-right: auto; font: 600 12px var(--font); color: #9a99a8; transform: translateX(-24px); }
.window .chrome .ctl { display: flex; gap: 18px; color: #9a99a8; font-size: 12px; }
.window img { width: 100%; height: auto; }
.phone {
  position: absolute; right: -22px; bottom: -6px; width: min(25%, 250px); aspect-ratio: 9 / 18.5;
  border-radius: 34px; padding: 9px; background: linear-gradient(160deg, #3b3a4b, #18171f);
  box-shadow: 0 30px 70px rgba(0, 0, 0, .55), inset 0 0 0 1px rgba(255, 255, 255, .08);
  transform: rotate(3deg);
}
.phone::before { content: ""; position: absolute; top: 17px; left: 50%; width: 30%; height: 16px; transform: translateX(-50%); border-radius: 10px; background: #0b0a12; z-index: 2; }
.phone img { width: 100%; height: 100%; object-fit: cover; object-position: top; border-radius: 26px; }
.float-pill {
  position: absolute; left: -18px; top: 38%; display: flex; align-items: center; gap: 10px;
  padding: 10px 14px 10px 10px; border-radius: 14px; background: color-mix(in srgb, var(--surface) 88%, transparent);
  border: 1px solid var(--line-2); box-shadow: var(--shadow); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  font-size: 13.5px; font-weight: 650; animation: bob 6s ease-in-out infinite;
}
.float-pill .dot { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: color-mix(in srgb, var(--teal) 18%, transparent); color: var(--teal); }
.float-pill .dot svg { width: 18px; height: 18px; }
.float-pill small { display: block; font-weight: 550; color: var(--text-3); font-size: 12px; }
@keyframes bob { 50% { transform: translateY(-8px); } }

/* works-with strip */
.strip { padding: 22px 0 8px; }
.strip p { text-align: center; color: var(--text-3); font-size: 13px; font-weight: 650; letter-spacing: .08em; text-transform: uppercase; margin: 0 0 16px; }
.logos { display: flex; flex-wrap: wrap; gap: 10px 12px; justify-content: center; }
.logos > span {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--surface); color: var(--text-2); font-size: 14px; font-weight: 600;
}
.logos svg { width: 17px; height: 17px; }

/* ------------------------------------------------ sections */
section { scroll-margin-top: 72px; }
.section { padding: 96px 0; position: relative; }
.section.alt { background: linear-gradient(180deg, transparent, var(--bg-2) 18%, var(--bg-2) 82%, transparent); }
.kicker { display: inline-block; font-size: 13px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--coral); margin-bottom: 12px; }
h2 { font-size: clamp(30px, 4.2vw, 48px); line-height: 1.12; letter-spacing: -.035em; margin: 0 0 14px; font-weight: 820; }
h3 { font-size: 19px; letter-spacing: -.015em; margin: 0 0 6px; }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head p { color: var(--text-2); font-size: 17.5px; margin: 0; }

/* features */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feature {
  position: relative; padding: 24px 22px; border-radius: var(--radius); background: var(--surface);
  border: 1px solid var(--line); overflow: hidden; transition: transform .2s, border-color .2s;
}
.feature:hover { transform: translateY(-3px); border-color: var(--line-2); }
.feature::after {
  content: ""; position: absolute; inset: auto -40% -60% auto; width: 70%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle, var(--c, var(--glow-1)), transparent 70%); opacity: .5; pointer-events: none;
}
.feature .ic {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 16px;
  color: var(--ic, var(--violet)); background: color-mix(in srgb, var(--ic, var(--violet)) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--ic, var(--violet)) 28%, transparent);
}
.feature .ic svg { width: 22px; height: 22px; }
.feature p { margin: 0; color: var(--text-2); font-size: 14.5px; }
.feature.wide { grid-column: span 2; }

/* showcase rows */
.show { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; align-items: center; margin-bottom: 110px; }
.show:last-child { margin-bottom: 0; }
.show.flip { grid-template-columns: 1.25fr 1fr; }
.show.flip .show-copy { order: 2; }
.show-copy ul { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 12px; }
.show-copy li { display: flex; gap: 12px; color: var(--text-2); }
.show-copy li svg { width: 20px; height: 20px; flex: none; margin-top: 3px; color: var(--teal); }
.show-copy li b { color: var(--text); }
.show-copy > p { color: var(--text-2); font-size: 17px; margin: 0; }
.shot {
  position: relative; border-radius: 14px; overflow: hidden; border: 1px solid var(--line-2); box-shadow: var(--shadow); background: #1c1b1f;
}
.shot-wrap { position: relative; }
.shot-wrap::before {
  content: ""; position: absolute; inset: 8% -6% -8% 8%; z-index: -1; border-radius: 40px; filter: blur(40px);
  background: linear-gradient(135deg, var(--glow-1), var(--glow-2));
}
.shot-wrap .phone { right: -16px; bottom: -28px; width: min(32%, 210px); }

/* how it works */
.flow { position: relative; border-radius: 24px; border: 1px solid var(--line); background: var(--surface); padding: 36px 28px; overflow: hidden; }
.flow svg.diagram { width: 100%; height: auto; display: block; }
.flow .legend { display: flex; gap: 10px 22px; flex-wrap: wrap; justify-content: center; margin-top: 18px; color: var(--text-2); font-size: 14px; }
.flow .legend span { display: inline-flex; align-items: center; gap: 8px; }
.flow .legend i { width: 22px; height: 3px; border-radius: 3px; background: var(--c); }
.dash { stroke-dasharray: 6 8; animation: flow 1.4s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -28; } }
.steps3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 22px; }
.steps3 div { padding: 18px 20px; border-radius: 14px; background: var(--surface-2); border: 1px solid var(--line); }
.steps3 b { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }
.steps3 b .n { width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; font-size: 13px; background: var(--accent); color: var(--accent-ink); }
.steps3 p { margin: 0; color: var(--text-2); font-size: 14.5px; }

/* security */
.sec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.sec { display: flex; gap: 16px; padding: 22px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); }
.sec .ic { flex: none; width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; color: var(--teal); background: color-mix(in srgb, var(--teal) 14%, transparent); }
.sec .ic svg { width: 21px; height: 21px; }
.sec p { margin: 0; color: var(--text-2); font-size: 14.5px; }
.note { margin-top: 18px; padding: 14px 18px; border-radius: 14px; border: 1px solid color-mix(in srgb, var(--coral) 35%, transparent); background: color-mix(in srgb, var(--coral) 9%, transparent); color: var(--text-2); font-size: 14.5px; }
.note b { color: var(--text); }

/* FAQ */
.faq { max-width: 820px; margin-inline: auto; display: grid; gap: 10px; }
.faq details { border-radius: 14px; border: 1px solid var(--line); background: var(--surface); padding: 0 20px; transition: border-color .2s; }
.faq details[open] { border-color: var(--line-2); }
.faq summary { list-style: none; cursor: pointer; padding: 18px 0; font-weight: 700; display: flex; align-items: center; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; margin-left: auto; width: 10px; height: 10px; border-right: 2px solid var(--text-3); border-bottom: 2px solid var(--text-3); transform: rotate(45deg); transition: transform .2s; flex: none; }
.faq details[open] summary::after { transform: rotate(-135deg); }
.faq details > div { padding: 0 0 18px; color: var(--text-2); font-size: 15px; }
.faq details > div p { margin: 0 0 8px; }

/* final CTA */
.final {
  position: relative; text-align: center; padding: 72px 28px; border-radius: 28px; overflow: hidden; isolation: isolate;
  background: linear-gradient(140deg, #2b2878 0%, #26255f 45%, #1a1940 100%); color: #f1f0fa; border: 1px solid rgba(255, 255, 255, .1);
}
.final::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(420px 260px at 15% 20%, rgba(255, 106, 67, .35), transparent 70%), radial-gradient(420px 280px at 90% 90%, rgba(51, 209, 194, .3), transparent 70%);
}
.final h2 { color: #fff; }
.final p { color: #c9c7e6; margin: 0 auto; max-width: 560px; }
.final .btn { background: rgba(255, 255, 255, .08); color: #fff; border-color: rgba(255, 255, 255, .22); }
.final .btn.primary { background: #fff; color: #26255f; box-shadow: 0 10px 30px rgba(0, 0, 0, .3); }
.final img.mark { width: 64px; height: 64px; border-radius: 18px; margin: 0 auto 18px; box-shadow: 0 12px 30px rgba(0, 0, 0, .35); }

/* footer */
footer { padding: 56px 0 40px; border-top: 1px solid var(--line); margin-top: 96px; color: var(--text-3); font-size: 14px; }
footer .wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 28px; }
footer h4 { margin: 0 0 10px; color: var(--text); font-size: 14px; }
footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
footer a { color: var(--text-2); text-decoration: none; }
footer a:hover { color: var(--text); text-decoration: underline; }
footer .fine { grid-column: 1 / -1; padding-top: 20px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; }

/* reveal on scroll (only when JS runs) */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s cubic-bezier(.2, .8, .2, 1); }
.js .reveal.in { opacity: 1; transform: none; }

/* ------------------------------------------------ getting started page */
.page-hero { padding: 64px 0 28px; position: relative; isolation: isolate; }
.page-hero::before { content: ""; position: absolute; inset: -80px 0 auto; height: 520px; z-index: -1; background: radial-gradient(520px 300px at 20% 30%, var(--glow-1), transparent 70%), radial-gradient(460px 280px at 85% 10%, var(--glow-2), transparent 70%); }
.page-hero h1 { font-size: clamp(36px, 5.4vw, 60px); line-height: 1.08; letter-spacing: -.04em; margin: 14px 0 12px; font-weight: 850; }
.page-hero p { color: var(--text-2); font-size: 18px; max-width: 700px; margin: 0; }
.paths { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 30px; }
.path {
  display: flex; flex-direction: column; gap: 6px; padding: 18px; border-radius: 16px; text-decoration: none;
  background: var(--surface); border: 1px solid var(--line); transition: transform .2s, border-color .2s;
}
.path:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }
.path .ic { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; color: var(--ic); background: color-mix(in srgb, var(--ic) 15%, transparent); }
.path .ic svg { width: 20px; height: 20px; }
.path b { font-size: 15.5px; }
.path > span:not(.ic) { color: var(--text-3); font-size: 13.5px; }

.guide { display: grid; grid-template-columns: 230px 1fr; gap: 48px; padding: 40px 0 0; align-items: start; }
.toc { position: sticky; top: 88px; display: grid; gap: 2px; font-size: 14px; }
.toc b { color: var(--text-3); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; padding: 0 12px 8px; }
.toc a { text-decoration: none; color: var(--text-2); padding: 8px 12px; border-radius: 9px; border-left: 2px solid transparent; display: flex; gap: 10px; align-items: center; }
.toc a .n { width: 22px; height: 22px; border-radius: 7px; display: grid; place-items: center; font-size: 12px; font-weight: 800; background: var(--surface-2); color: var(--text-3); flex: none; }
.toc a:hover { background: var(--surface); color: var(--text); }
.toc a.on { color: var(--text); background: var(--surface); }
.toc a.on .n { background: var(--accent); color: var(--accent-ink); }

.step { padding: 0 0 64px; position: relative; }
.step-head { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.step-num {
  width: 44px; height: 44px; border-radius: 13px; flex: none; display: grid; place-items: center; font-weight: 850; font-size: 18px;
  color: #fff; background: linear-gradient(135deg, #5a56e0, #3a3796); box-shadow: 0 8px 20px rgba(71, 68, 176, .4);
}
.step h2 { font-size: clamp(24px, 3vw, 32px); margin: 0; }
.step > p, .step li { color: var(--text-2); }
.step ol.sub, .step ul.sub { padding-left: 20px; display: grid; gap: 8px; margin: 14px 0; }
.step ol.sub li::marker { color: var(--accent); font-weight: 800; }
.step .shot { margin: 22px 0 6px; }
.cap { font-size: 13.5px; color: var(--text-3); margin: 8px 2px 0; }
.path-ui { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 4px; font-weight: 650; color: var(--text); }
.path-ui i { font-style: normal; padding: 2px 9px; border-radius: 7px; background: var(--surface-2); border: 1px solid var(--line); font-size: 14px; }
.path-ui i + i { margin-left: 14px; position: relative; }
.path-ui i + i::before { content: "›"; position: absolute; left: -12px; color: var(--text-3); font-weight: 700; }
kbd { font: 600 12.5px var(--mono); padding: 2px 7px; border-radius: 6px; border: 1px solid var(--line-2); border-bottom-width: 2px; background: var(--surface-2); color: var(--text); }
code { font: 13.5px var(--mono); padding: 2px 7px; border-radius: 6px; background: var(--surface-2); border: 1px solid var(--line); color: var(--text); word-break: break-word; }
.callout { display: flex; gap: 12px; padding: 14px 16px; border-radius: 14px; margin: 16px 0; background: color-mix(in srgb, var(--accent) 10%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent); color: var(--text-2); font-size: 14.5px; }
.callout.warn { background: color-mix(in srgb, var(--coral) 9%, transparent); border-color: color-mix(in srgb, var(--coral) 32%, transparent); }
.callout.ok { background: color-mix(in srgb, var(--teal) 9%, transparent); border-color: color-mix(in srgb, var(--teal) 30%, transparent); }
.callout svg { width: 20px; height: 20px; flex: none; margin-top: 2px; color: var(--accent); }
.callout.warn svg { color: var(--coral); }
.callout.ok svg { color: var(--teal); }
.callout b { color: var(--text); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 18px 0; }
.card { padding: 20px; border-radius: 16px; background: var(--surface); border: 1px solid var(--line); }
.card h3 { display: flex; align-items: center; gap: 10px; }
.card h3 .badge { font-size: 11.5px; font-weight: 800; padding: 2px 8px; border-radius: 999px; background: color-mix(in srgb, var(--teal) 18%, transparent); color: var(--teal); }
.card p, .card li { color: var(--text-2); font-size: 14.5px; }
.card ol { padding-left: 18px; margin: 10px 0 0; display: grid; gap: 6px; }
.phone-row { display: grid; grid-template-columns: 1fr 210px; gap: 28px; align-items: center; }
.mini-phone { border-radius: 30px; padding: 8px; background: linear-gradient(160deg, #3b3a4b, #18171f); box-shadow: var(--shadow); }
.mini-phone img { border-radius: 23px; }
.done { text-align: center; padding: 48px 24px; border-radius: 24px; border: 1px solid var(--line); background: var(--surface); }
.done h2 { margin-bottom: 8px; }
.done p { color: var(--text-2); margin: 0 auto 22px; max-width: 520px; }

/* ------------------------------------------------ responsive */
@media (max-width: 1040px) {
  .features { grid-template-columns: repeat(2, 1fr); }
  .show, .show.flip { grid-template-columns: 1fr; gap: 36px; }
  .show.flip .show-copy { order: 0; }
  .guide { grid-template-columns: 1fr; gap: 0; }
  .toc { display: none; }
  .paths { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 820px) {
  .nav-links { display: none; }
  .steps3, .sec-grid, .two { grid-template-columns: 1fr; }
  footer .wrap { grid-template-columns: 1fr 1fr; }
  footer .wrap > div:first-child { grid-column: 1 / -1; }
  .float-pill { display: none; }
  .phone { right: -8px; width: 28%; border-radius: 26px; padding: 6px; }
  .phone img { border-radius: 21px; }
  .phone::before { top: 12px; height: 11px; }
  .phone-row { grid-template-columns: 1fr; }
  .mini-phone { max-width: 230px; margin: 0 auto; }
  .section { padding: 72px 0; }
}
@media (max-width: 560px) {
  .wrap { width: min(var(--maxw), 100% - 32px); }
  .hero { padding-top: 48px; }
  .features { grid-template-columns: 1fr; }
  .feature.wide { grid-column: auto; }
  .paths { grid-template-columns: 1fr 1fr; gap: 10px; }
  .path { padding: 14px; }
  .nav .btn.small .label { display: none; }
  .nav .wrap { gap: 10px; }
  .brand small { display: none; }
  .cta .btn { width: 100%; }
  .window { transform: none; }
  .window .chrome .ctl { display: none; }
  .final { padding: 52px 20px; }
  footer .wrap { grid-template-columns: 1fr; }
  .show { margin-bottom: 80px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}
.diagram .box { fill: var(--surface-2); stroke: var(--line-2); }
.diagram .muted { fill: var(--text-3); }
.diagram { color: var(--text); }
@media (max-width: 1180px) {
  .phone, .shot-wrap .phone { right: -6px; }
  .float-pill { left: -6px; }
}
html, body { overflow-x: clip; }
/* Korean reads better with whole-word wrapping and looser display tracking */
:root[data-lang="ko"] body { word-break: keep-all; overflow-wrap: anywhere; }
:root[data-lang="ko"] h1.title, :root[data-lang="ko"] h2, :root[data-lang="ko"] .page-hero h1 { letter-spacing: -.025em; }
.lead, .section-head p, .page-hero p { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; }
.phone { aspect-ratio: 640 / 994; }
.flow .scroller { overflow-x: auto; scrollbar-width: thin; }
@media (max-width: 700px) {
  .flow { padding: 22px 14px; }
  .flow svg.diagram { min-width: 640px; }
}