:root {
  color-scheme: dark;
  --release-ink: #17120e;
  --release-panel: #211913;
  --release-panel-strong: #2a2018;
  --release-paper: #f9efdd;
  --release-muted: #b7a995;
  --release-subtle: #8f806d;
  --release-gold: #c9a24b;
  --release-gold-light: #e4c98a;
  --release-line: rgba(244, 231, 208, .15);
  --release-danger: #f3a2a2;
  font-family: 'IBM Plex Sans', system-ui, -apple-system, 'Apple SD Gothic Neo', 'Noto Sans KR', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--release-ink); }
body { margin: 0; min-width: 320px; background: var(--release-ink); color: var(--release-paper); }
a { color: inherit; }
button, input, select, textarea { font: inherit; }

.release-shell { min-height: 100vh; overflow: clip; background: radial-gradient(ellipse 950px 560px at 50% -5%, #2a2016 0%, var(--release-ink) 62%); }
.release-nav { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 24px 0; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.release-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--release-paper); text-decoration: none; letter-spacing: 2px; font-size: 13px; font-weight: 700; white-space: nowrap; }
.release-brand img { width: 25px; height: 25px; }
.release-lang { display: inline-flex; align-items: center; gap: 2px; border: 1px solid var(--release-line); border-radius: 999px; padding: 3px; background: rgba(23, 18, 14, .55); }
.release-lang a { padding: 6px 11px; border-radius: 999px; color: var(--release-muted); text-decoration: none; font-size: 12px; font-weight: 700; }
.release-lang a[aria-current='page'] { color: #241b0d; background: var(--release-gold); }

.release-main { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.release-hero { padding: clamp(54px, 8vw, 100px) 0 clamp(52px, 7vw, 84px); text-align: center; }
.release-kicker { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 24px; padding: 7px 13px; border: 1px solid rgba(201, 162, 75, .42); border-radius: 999px; color: var(--release-gold-light); background: rgba(201, 162, 75, .08); font-size: 13px; font-weight: 700; letter-spacing: .03em; }
.release-kicker::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: #f37021; box-shadow: 0 0 0 4px rgba(243, 112, 33, .12); }
.release-title { max-width: 840px; margin: 0 auto 18px; color: #fbf2e3; font-size: clamp(38px, 5.4vw, 66px); line-height: 1.08; letter-spacing: -.055em; text-wrap: balance; }
.release-lede { max-width: 650px; margin: 0 auto; color: var(--release-muted); font-size: clamp(16px, 2vw, 19px); line-height: 1.68; text-wrap: pretty; }

.platform-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; max-width: 900px; margin: 38px auto 20px; text-align: left; }
.platform-card { display: grid; grid-template-columns: 44px minmax(0, 1fr) 24px; align-items: center; gap: 15px; min-height: 126px; padding: 22px; border: 1px solid rgba(228, 201, 138, .46); border-radius: 17px; color: var(--release-paper); background: linear-gradient(135deg, rgba(255,255,255,.035), rgba(201,162,75,.04)); text-decoration: none; transition: transform .18s ease, border-color .18s ease, background .18s ease, box-shadow .18s ease; }
.platform-card:hover, .platform-card:focus-visible { transform: translateY(-2px); border-color: var(--release-gold); background: rgba(201,162,75,.1); box-shadow: 0 20px 40px -28px rgba(0,0,0,.85); outline: none; }
.platform-card[aria-disabled='true'], .platform-card[aria-disabled='true']:hover { transform: none; opacity: .72; cursor: not-allowed; box-shadow: none; }
.platform-card[data-recommended='true'] { border-color: var(--release-gold); box-shadow: 0 0 0 1px rgba(201,162,75,.18), 0 24px 42px -32px rgba(201,162,75,.85); }
.platform-icon { display: grid; width: 44px; height: 44px; place-items: center; border: 1px solid var(--release-line); border-radius: 13px; color: var(--release-gold-light); background: rgba(244,231,208,.05); font-size: 24px; font-weight: 700; }
.platform-copy { min-width: 0; }
.platform-copy strong { display: block; font-size: 19px; line-height: 1.2; }
.platform-copy span { display: block; margin-top: 7px; color: var(--release-muted); font-size: 14px; }
.platform-arrow { color: var(--release-gold-light); font-size: 27px; line-height: 1; }
.platform-note { min-height: 22px; margin: 0 auto; color: var(--release-gold-light); font-size: 13px; }

.trust-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 22px; margin: 24px auto 0; color: #ded1be; font-size: 14px; }
.trust-row span { display: inline-flex; align-items: center; gap: 8px; }
.trust-row strong { color: var(--release-gold-light); font-size: 16px; }
.release-section { padding: clamp(44px, 6vw, 76px) 0; border-top: 1px solid rgba(244,231,208,.1); }
.release-section-heading { margin: 0 0 10px; color: var(--release-paper); font-size: clamp(25px, 3.6vw, 38px); letter-spacing: -.035em; text-wrap: balance; }
.release-section-copy { max-width: 670px; margin: 0; color: var(--release-muted); font-size: 16px; line-height: 1.7; }
.install-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; padding: 0; margin: 30px 0 0; list-style: none; }
.install-step { min-height: 175px; padding: 23px; border: 1px solid var(--release-line); border-radius: 16px; background: rgba(244,231,208,.035); }
.step-number { display: grid; width: 30px; height: 30px; place-items: center; margin-bottom: 18px; border: 1px solid rgba(201,162,75,.68); border-radius: 50%; color: var(--release-gold-light); font-size: 13px; font-weight: 700; }
.install-step strong { display: block; margin-bottom: 8px; font-size: 18px; }
.install-step p { margin: 0; color: var(--release-muted); font-size: 14px; line-height: 1.65; }
.release-two-column { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(290px, .88fr); gap: 22px; align-items: start; }
.release-card { padding: 28px; border: 1px solid var(--release-line); border-radius: 18px; background: rgba(244,231,208,.035); }
.release-card h3 { margin: 0 0 10px; color: var(--release-paper); font-size: 20px; }
.release-card p { margin: 0; color: var(--release-muted); line-height: 1.65; }
.release-card ul { padding-left: 20px; margin: 18px 0 0; color: #ded1be; line-height: 1.8; }
.release-card li::marker { color: var(--release-gold); }
.release-primary, .release-secondary { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 9px; padding: 12px 17px; border-radius: 12px; font-weight: 750; text-decoration: none; cursor: pointer; }
.release-primary { border: 1px solid #dfbd6b; color: #261b0a; background: linear-gradient(180deg, #dfbd6b, var(--release-gold)); }
.release-primary:hover, .release-primary:focus-visible { background: #e5c678; outline: 3px solid rgba(201,162,75,.3); outline-offset: 2px; }
.release-secondary { border: 1px solid rgba(228,201,138,.48); color: var(--release-paper); background: transparent; }
.release-secondary:hover, .release-secondary:focus-visible { border-color: var(--release-gold); background: rgba(201,162,75,.08); outline: 0; }
.release-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.release-details { margin-top: 20px; border-top: 1px solid rgba(244,231,208,.1); }
.release-details summary { padding: 18px 0; color: var(--release-paper); cursor: pointer; font-weight: 700; }
.release-details p, .release-details code { color: var(--release-muted); font-size: 13px; line-height: 1.7; word-break: break-all; }
.release-details code { display: block; margin-top: 8px; }
.release-footer { margin-top: 28px; padding: 40px 20px; border-top: 1px solid rgba(244,231,208,.1); color: var(--release-subtle); text-align: center; font-size: 13px; }
.release-footer nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 22px; margin-bottom: 17px; }
.release-footer a { color: var(--release-muted); }

.checkin-intro { max-width: 710px; padding: 28px; margin: 28px 0 0; border-left: 2px solid var(--release-gold); color: var(--release-muted); background: rgba(201,162,75,.06); line-height: 1.7; }
.checkin-form { max-width: 760px; margin: 30px 0 0; padding: clamp(22px,4vw,34px); border: 1px solid var(--release-line); border-radius: 20px; background: rgba(244,231,208,.035); }
.checkin-fields { display: grid; gap: 19px; }
.checkin-field { display: grid; gap: 8px; }
.checkin-field label, .checkin-form legend { color: var(--release-paper); font-size: 15px; font-weight: 700; }
.checkin-field select, .checkin-field input, .checkin-field textarea { width: 100%; padding: 12px 13px; border: 1px solid rgba(244,231,208,.2); border-radius: 10px; color: var(--release-paper); background: rgba(10,8,6,.45); }
.checkin-field textarea { min-height: 122px; resize: vertical; line-height: 1.55; }
.checkin-field small { color: var(--release-subtle); line-height: 1.5; }
.checkin-form fieldset { padding: 0; margin: 0; border: 0; }
.checkin-options { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.checkin-options label { display: inline-flex; align-items: center; gap: 7px; padding: 10px 12px; border: 1px solid var(--release-line); border-radius: 10px; color: var(--release-muted); cursor: pointer; }
.checkin-options input { accent-color: var(--release-gold); }
.checkin-result { min-height: 22px; margin: 16px 0 0; color: var(--release-gold-light); font-size: 14px; }
.danger-note { color: var(--release-danger) !important; }

.landing-main { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.landing-hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(380px, .95fr); gap: clamp(38px, 7vw, 88px); align-items: center; min-height: 660px; padding: clamp(58px, 9vw, 112px) 0 clamp(72px, 10vw, 128px); }
.landing-hero-copy { position: relative; z-index: 1; }
.landing-title { max-width: 760px; margin: 0 0 24px; color: #fbf2e3; font-size: clamp(43px, 6.2vw, 76px); line-height: 1.04; letter-spacing: -.06em; text-wrap: balance; word-break: keep-all; overflow-wrap: break-word; }
.landing-lede { max-width: 670px; margin: 0; color: var(--release-muted); font-size: clamp(17px, 2vw, 20px); line-height: 1.7; text-wrap: pretty; }
.landing-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 32px; }
.landing-trust { display: flex; flex-wrap: wrap; gap: 10px 18px; padding: 0; margin: 28px 0 0; color: #d6c8b5; list-style: none; font-size: 13px; }
.landing-trust li { display: inline-flex; align-items: center; gap: 7px; }
.landing-trust li::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--release-gold); box-shadow: 0 0 0 3px rgba(201,162,75,.1); }

.landing-flow { position: relative; isolation: isolate; padding: clamp(24px, 4vw, 34px); border: 1px solid rgba(228,201,138,.24); border-radius: 24px; background: linear-gradient(150deg, rgba(42,32,24,.96), rgba(24,18,14,.92)); box-shadow: 0 36px 90px -48px rgba(0,0,0,.95); overflow: hidden; }
.landing-flow::before { content: ''; position: absolute; z-index: -1; width: 300px; height: 300px; top: -180px; right: -110px; border-radius: 50%; background: rgba(201,162,75,.16); filter: blur(10px); animation: landing-drift 8s ease-in-out infinite alternate; }
.landing-flow-head { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding-bottom: 20px; border-bottom: 1px solid var(--release-line); }
.landing-flow-head strong { font-size: 16px; }
.landing-flow-head span { color: var(--release-gold-light); font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.landing-flow-list { display: grid; gap: 10px; padding: 0; margin: 20px 0 0; list-style: none; counter-reset: flow; }
.landing-flow-list li { display: grid; grid-template-columns: 38px minmax(0, 1fr); gap: 13px; align-items: center; min-height: 76px; padding: 13px 15px; border: 1px solid rgba(244,231,208,.1); border-radius: 14px; background: rgba(244,231,208,.035); counter-increment: flow; transition: border-color .18s ease, background .18s ease, transform .18s ease; }
.landing-flow-list li:hover { transform: translateX(3px); border-color: rgba(201,162,75,.45); background: rgba(201,162,75,.07); }
.landing-flow-list li::before { content: counter(flow, decimal-leading-zero); display: grid; width: 36px; height: 36px; place-items: center; border: 1px solid rgba(201,162,75,.5); border-radius: 11px; color: var(--release-gold-light); font-size: 11px; font-weight: 800; }
.landing-flow-list strong { display: block; margin-bottom: 4px; color: var(--release-paper); font-size: 15px; }
.landing-flow-list span { display: block; color: var(--release-muted); font-size: 13px; line-height: 1.45; }

.landing-section { padding: clamp(66px, 9vw, 112px) 0; border-top: 1px solid rgba(244,231,208,.1); }
.landing-section-head { display: grid; grid-template-columns: minmax(0, .78fr) minmax(300px, 1.22fr); gap: 36px; align-items: end; margin-bottom: 44px; }
.landing-eyebrow { display: block; margin-bottom: 12px; color: var(--release-gold-light); font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.landing-heading { max-width: 650px; margin: 0; color: var(--release-paper); font-size: clamp(30px, 4.4vw, 48px); line-height: 1.12; letter-spacing: -.045em; text-wrap: balance; }
.landing-section-copy { max-width: 660px; margin: 0; color: var(--release-muted); font-size: 16px; line-height: 1.75; }
.landing-card-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.landing-card { min-height: 230px; padding: 25px; border: 1px solid var(--release-line); border-radius: 18px; background: rgba(244,231,208,.035); transition: transform .18s ease, border-color .18s ease, background .18s ease; }
.landing-card:hover { transform: translateY(-3px); border-color: rgba(201,162,75,.5); background: rgba(201,162,75,.065); }
.landing-card-index { display: grid; width: 38px; height: 38px; place-items: center; margin-bottom: 32px; border: 1px solid rgba(201,162,75,.38); border-radius: 12px; color: var(--release-gold-light); background: rgba(201,162,75,.07); font-size: 12px; font-weight: 800; }
.landing-card h3 { margin: 0 0 9px; color: var(--release-paper); font-size: 19px; }
.landing-card p { margin: 0; color: var(--release-muted); font-size: 14px; line-height: 1.65; }

.landing-choice { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .8fr); gap: 18px; align-items: stretch; }
.landing-choice-main, .landing-choice-note { padding: clamp(26px, 4vw, 38px); border-radius: 20px; }
.landing-choice-main { border: 1px solid rgba(228,201,138,.38); background: linear-gradient(140deg, rgba(201,162,75,.11), rgba(244,231,208,.035)); }
.landing-choice-note { border: 1px solid var(--release-line); background: rgba(244,231,208,.035); }
.landing-choice h2 { margin: 0 0 13px; color: var(--release-paper); font-size: clamp(25px, 3.3vw, 36px); letter-spacing: -.035em; }
.landing-choice h3 { margin: 0 0 10px; color: var(--release-paper); font-size: 20px; }
.landing-choice p { margin: 0; color: var(--release-muted); line-height: 1.7; }

.landing-alpha { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 32px; align-items: center; padding: clamp(30px, 5vw, 48px); border: 1px solid rgba(228,201,138,.42); border-radius: 22px; background: linear-gradient(115deg, rgba(201,162,75,.14), rgba(42,32,24,.78)); }
.landing-alpha h2 { margin: 0 0 10px; color: var(--release-paper); font-size: clamp(27px, 3.6vw, 40px); letter-spacing: -.04em; }
.landing-alpha p { max-width: 720px; margin: 0; color: var(--release-muted); line-height: 1.68; }
.landing-faq { display: grid; gap: 10px; max-width: 820px; }
.landing-faq details { border: 1px solid var(--release-line); border-radius: 14px; background: rgba(244,231,208,.03); }
.landing-faq summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 19px 21px; color: var(--release-paper); cursor: pointer; font-weight: 700; list-style: none; }
.landing-faq summary::-webkit-details-marker { display: none; }
.landing-faq summary::after { content: '+'; color: var(--release-gold-light); font-size: 22px; font-weight: 400; }
.landing-faq details[open] summary::after { content: '−'; }
.landing-faq p { padding: 0 21px 20px; margin: 0; color: var(--release-muted); font-size: 14px; line-height: 1.7; }
.landing-company { margin: 12px 0 0; color: var(--release-subtle); font-size: 12px; }

@keyframes landing-drift {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(-28px, 28px, 0); }
}

@media (max-width: 760px) {
  .release-nav, .release-main { width: min(100% - 28px, 1120px); }
  .release-nav { padding: 17px 0; }
  .release-brand { font-size: 11px; letter-spacing: 1.45px; }
  .release-lang a { padding: 5px 8px; }
  .platform-grid, .install-steps, .release-two-column { grid-template-columns: 1fr; }
  .platform-card { min-height: 108px; padding: 18px; }
  .release-hero { padding-top: 58px; }
  .release-title { font-size: clamp(34px, 11vw, 49px); }
  .trust-row { justify-content: flex-start; }
  .landing-main { width: min(100% - 28px, 1180px); }
  .landing-hero, .landing-section-head, .landing-choice, .landing-alpha { grid-template-columns: 1fr; }
  .landing-hero { min-height: 0; padding-top: 62px; }
  .landing-title { font-size: clamp(39px, 12vw, 56px); }
  .landing-flow { padding: 20px; }
  .landing-card-grid { grid-template-columns: 1fr; }
  .landing-card { min-height: 0; }
  .landing-alpha { align-items: start; }
}

@media (min-width: 761px) and (max-width: 1040px) {
  .landing-hero { grid-template-columns: 1fr; min-height: 0; }
  .landing-flow { max-width: 720px; }
  .landing-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
  .landing-flow::before { animation: none; }
}