:root {
  --ink: #10233f;
  --ink-soft: #42536a;
  --paper: #f6f1e7;
  --paper-deep: #ece3d4;
  --white: #fffdf8;
  --line: #d8d0c3;
  --green: #167a58;
  --green-soft: #e3f2eb;
  --red: #b9423b;
  --red-soft: #fae8e5;
  --amber: #a86608;
  --amber-soft: #fff2d6;
  --shadow: 0 24px 70px rgba(16, 35, 63, .14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Pretendard, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif; line-height: 1.68; letter-spacing: -.018em; }
button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
img { max-width: 100%; }
.skip-link { position: fixed; z-index: 100; top: -60px; left: 16px; padding: 10px 16px; background: var(--ink); color: white; border-radius: 8px; }
.skip-link:focus { top: 16px; }
:focus-visible { outline: 3px solid #e4a02c; outline-offset: 3px; }
.section-shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }

.site-header { position: sticky; z-index: 30; top: 0; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; min-height: 72px; padding: 10px max(24px, calc((100vw - 1180px) / 2)); border-bottom: 1px solid rgba(16,35,63,.1); background: rgba(246,241,231,.94); backdrop-filter: blur(16px); }
.brand { display: inline-flex; align-items: center; gap: 10px; width: max-content; text-decoration: none; font-weight: 850; letter-spacing: -.04em; }
.brand-mark { display: grid; place-items: center; width: 36px; height: 36px; border: 1px solid var(--ink); border-radius: 8px; background: var(--ink); color: var(--paper); font-family: Georgia, serif; font-size: 18px; }
.site-header nav { display: flex; align-items: center; gap: 28px; font-size: 14px; font-weight: 700; }
.site-header nav a { text-decoration: none; }
.site-header nav a:hover { color: var(--green); }
.header-actions { display: flex; justify-content: flex-end; align-items: center; gap: 12px; }
.text-button { border: 0; background: transparent; color: var(--ink); font-weight: 750; cursor: pointer; min-height: 44px; }
.button { min-height: 48px; padding: 0 22px; border: 1px solid var(--ink); border-radius: 10px; background: transparent; color: var(--ink); font-weight: 800; text-decoration: none; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
.button:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(16,35,63,.13); }
.button:disabled { cursor: not-allowed; opacity: .48; }
.button.primary, .button.compact { background: var(--ink); color: white; }
.button.secondary { background: var(--white); }
.button.compact { min-height: 42px; padding-inline: 16px; font-size: 14px; }
.button.wide { width: 100%; }
.button.light { background: var(--paper); border-color: var(--paper); }
.button.outline-light { color: white; border-color: rgba(255,255,255,.7); }
.eyebrow { margin: 0 0 10px; color: var(--green); font-size: 12px; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; }
.eyebrow.light { color: #80d4b5; }

.hero { display: grid; grid-template-columns: .86fr 1.14fr; gap: 64px; align-items: center; min-height: 730px; padding-block: 80px 96px; }
.hero h1 { margin: 0; font-family: Georgia, "Noto Serif KR", serif; font-size: clamp(48px, 5.8vw, 82px); line-height: 1.08; letter-spacing: -.065em; font-weight: 700; }
.hero h1 em { color: var(--green); font-style: normal; }
.hero-lead { max-width: 610px; margin: 30px 0 0; color: var(--ink-soft); font-size: 18px; line-height: 1.8; }
.hero-actions { display: flex; gap: 12px; margin-top: 34px; }
.proof-list { display: flex; flex-wrap: wrap; gap: 10px 22px; padding: 0; margin: 24px 0 0; list-style: none; color: var(--ink-soft); font-size: 13px; font-weight: 700; }
.proof-list li::before { content: "✓"; margin-right: 7px; color: var(--green); }

.product-window { position: relative; overflow: hidden; border: 1px solid rgba(16,35,63,.18); border-radius: 18px; background: #f8fafc; box-shadow: var(--shadow); transform: rotate(.6deg); }
.product-window::after { content: ""; position: absolute; inset: 0; pointer-events: none; box-shadow: inset 0 0 0 1px rgba(255,255,255,.65); border-radius: inherit; }
.window-bar { display: flex; align-items: center; gap: 7px; height: 48px; padding: 0 18px; border-bottom: 1px solid #dce3ea; background: white; }
.window-bar span { width: 10px; height: 10px; border-radius: 50%; background: #ced6df; }
.window-bar span:first-child { background: #e26b60; }.window-bar span:nth-child(2) { background: #e7b64e; }.window-bar span:nth-child(3) { background: #68b784; }
.window-bar b { margin-left: 8px; font-size: 13px; }
.health-banner { display: flex; justify-content: space-between; align-items: center; padding: 22px 24px; background: var(--ink); color: white; }
.health-banner small { display: block; color: #b7c6d8; }.health-banner strong { display: block; margin-top: 3px; font-size: 25px; }
.metric-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 10px; padding: 14px; }
.metric-grid article { padding: 18px; border: 1px solid #dde4eb; border-radius: 11px; background: white; }
.metric-grid span, .metric-grid small { display: block; color: #6b7888; font-size: 12px; }
.metric-grid strong { display: block; margin: 6px 0 3px; font-size: 18px; letter-spacing: -.04em; }
.ledger-table { margin: 0 14px 14px; border: 1px solid #dde4eb; border-radius: 11px; overflow: hidden; background: white; }
.ledger-row { display: grid; grid-template-columns: 1.3fr .9fr 1fr 1fr; align-items: center; min-height: 52px; padding: 8px 14px; border-top: 1px solid #edf0f3; font-size: 12px; }
.ledger-row.head { min-height: 38px; border-top: 0; background: #f0f4f7; color: #68778a; font-weight: 750; }
.ledger-row b { text-align: right; }.ledger-row i { justify-self: end; font-style: normal; }
.status-pill { display: inline-flex; align-items: center; width: max-content; padding: 5px 8px; border-radius: 999px; font-size: 10px; font-weight: 850; }
.status-pill.good { background: var(--green-soft); color: var(--green); }.status-pill.warn { background: var(--amber-soft); color: var(--amber); }.status-pill.danger { background: var(--red-soft); color: var(--red); }
.preview-note { margin: 0 18px 14px; color: #7c8896; font-size: 11px; text-align: right; }

.outcome-strip { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: end; padding: 50px max(24px, calc((100vw - 1180px) / 2)); background: var(--paper-deep); border-block: 1px solid var(--line); }
.outcome-strip h2 { margin: 0; font-family: Georgia, "Noto Serif KR", serif; font-size: clamp(28px, 3vw, 43px); letter-spacing: -.05em; }
.outcome-strip > p { max-width: 560px; margin: 0; color: var(--ink-soft); font-size: 17px; }
.content-section { padding-block: 130px; }
.section-heading { max-width: 740px; margin: 0 auto 50px; text-align: center; }
.section-heading.left { margin-inline: 0; text-align: left; }
.section-heading h2 { margin: 0; font-family: Georgia, "Noto Serif KR", serif; font-size: clamp(36px, 4vw, 55px); line-height: 1.2; letter-spacing: -.055em; }
.section-heading > p:last-child { color: var(--ink-soft); font-size: 17px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); border-left: 1px solid var(--line); }
.feature-grid article { min-height: 265px; padding: 32px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,253,248,.48); }
.feature-number { color: var(--green); font-size: 12px; font-weight: 900; letter-spacing: .12em; }
.feature-grid h3 { margin: 50px 0 12px; font-size: 22px; letter-spacing: -.04em; }.feature-grid p { margin: 0; color: var(--ink-soft); }

.workflow-section { padding-block: 110px; background: var(--white); border-block: 1px solid var(--line); }
.workflow-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 100px; align-items: start; }
.steps { padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--ink); }
.steps li { display: grid; grid-template-columns: 68px 1fr; gap: 20px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.steps b { color: var(--green); }.steps h3 { margin: 0 0 6px; font-size: 21px; }.steps p { margin: 0; color: var(--ink-soft); }

.security-section { display: grid; grid-template-columns: .8fr 1.2fr; gap: 90px; width: min(1240px, calc(100% - 40px)); margin-block: 130px; padding: 72px; border-radius: 24px; background: var(--ink); color: white; }
.security-copy h2 { margin: 0; font-family: Georgia, "Noto Serif KR", serif; font-size: clamp(38px, 4.5vw, 58px); line-height: 1.2; letter-spacing: -.055em; }.security-copy > p:last-child { color: #bdc9d8; }
.security-list article { display: grid; grid-template-columns: 48px 1fr; gap: 20px; padding: 24px 0; border-top: 1px solid rgba(255,255,255,.18); }.security-list article b { color: #80d4b5; }.security-list h3 { margin: 0 0 7px; }.security-list p { margin: 0; color: #bdc9d8; }.security-list aside { padding: 18px 20px; border: 1px solid rgba(255,255,255,.22); border-radius: 10px; color: #dbe4ed; font-size: 13px; }

.pricing-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; max-width: 900px; margin: 0 auto; }
.price-card { padding: 38px; border: 1px solid var(--line); border-radius: 16px; background: var(--white); }.price-card.featured { border: 2px solid var(--ink); box-shadow: var(--shadow); }.price-card h3 { margin: 0; font-size: 23px; }.price { min-height: 56px; margin: 24px 0; font-family: Georgia, serif; font-size: 31px; font-weight: 700; letter-spacing: -.045em; }.price small { color: var(--ink-soft); font-family: inherit; font-size: 13px; font-weight: 500; }.price-card ul { display: grid; gap: 10px; padding: 20px 0 28px; margin: 0; border-top: 1px solid var(--line); list-style: none; }.price-card li::before { content: "✓"; margin-right: 9px; color: var(--green); font-weight: 900; }.pricing-note { max-width: 760px; margin: 24px auto 0; color: var(--ink-soft); font-size: 13px; text-align: center; }

.downloads-section { padding-block: 120px; border-top: 1px solid var(--line); }
.release-grid { display: grid; gap: 12px; }.release-grid article { display: grid; grid-template-columns: 60px 1fr auto; gap: 18px; align-items: center; padding: 20px 22px; border: 1px solid var(--line); border-radius: 12px; background: var(--white); }.os-icon { display: grid; place-items: center; width: 50px; height: 50px; border-radius: 12px; background: var(--ink); color: white; font-size: 25px; }.release-grid h3, .release-grid p { margin: 0; }.release-grid p { color: var(--ink-soft); font-size: 13px; }

.faq-section { padding-block: 100px 140px; }.faq-list { border-top: 1px solid var(--ink); }.faq-list details { border-bottom: 1px solid var(--line); }.faq-list summary { position: relative; padding: 24px 48px 24px 0; list-style: none; cursor: pointer; font-size: 19px; font-weight: 800; }.faq-list summary::after { content: "+"; position: absolute; right: 12px; font-size: 25px; font-weight: 400; }.faq-list details[open] summary::after { content: "−"; }.faq-list p { max-width: 800px; margin: -8px 0 24px; color: var(--ink-soft); }
.final-cta { display: flex; justify-content: space-between; align-items: end; gap: 50px; padding: 80px max(24px, calc((100vw - 1180px) / 2)); background: var(--green); color: white; }.final-cta h2 { margin: 0; font-family: Georgia, "Noto Serif KR", serif; font-size: clamp(38px, 4.5vw, 60px); line-height: 1.18; letter-spacing: -.05em; }.final-cta > div:last-child { display: flex; gap: 12px; }
footer { display: grid; grid-template-columns: 1fr auto; gap: 10px 40px; align-items: center; padding: 52px max(24px, calc((100vw - 1180px) / 2)); background: #0b192d; color: #bec9d5; }.footer-brand { color: white; }.footer-brand .brand-mark { border-color: #dce4ed; }.footer-brand + p { grid-column: 1; margin: 0; }.footer nav { grid-column: 2; grid-row: 1 / span 2; display: flex; gap: 20px; }.footer nav a { font-size: 13px; }.footer small { grid-column: 1 / -1; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.12); }

dialog { width: min(590px, calc(100% - 28px)); max-height: calc(100vh - 28px); padding: 0; border: 0; border-radius: 18px; background: var(--white); color: var(--ink); box-shadow: var(--shadow); }.dialog-card { position: relative; overflow-y: auto; max-height: calc(100vh - 28px); padding: 34px; }.dialog-close { position: absolute; top: 16px; right: 16px; width: 44px; height: 44px; border: 0; border-radius: 50%; background: var(--paper); font-size: 25px; cursor: pointer; }dialog::backdrop { background: rgba(5,16,29,.64); backdrop-filter: blur(4px); }.auth-tabs { display: grid; grid-template-columns: 1fr 1fr; padding: 4px; margin: 38px 0 26px; border-radius: 10px; background: var(--paper); }.auth-tabs button { min-height: 44px; border: 0; border-radius: 8px; background: transparent; color: var(--ink-soft); font-weight: 800; cursor: pointer; }.auth-tabs button.active { background: var(--white); color: var(--ink); box-shadow: 0 3px 12px rgba(16,35,63,.09); }.auth-form { display: grid; gap: 16px; }.auth-form[hidden] { display: none; }.auth-form h2, .account-card h2 { margin: 0; font-size: 29px; letter-spacing: -.045em; }.auth-form > div > p:last-child { color: var(--ink-soft); }.auth-form label { display: grid; gap: 7px; font-size: 13px; font-weight: 750; }.auth-form input, .auth-form select { width: 100%; min-height: 48px; padding: 0 13px; border: 1px solid var(--line); border-radius: 9px; background: white; color: var(--ink); }.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }.auth-form small { color: var(--ink-soft); font-weight: 500; }.check-line { grid-template-columns: 20px 1fr !important; align-items: start; }.check-line input { width: 18px; min-height: 18px; }.honeypot { display: none !important; }.form-error { min-height: 24px; margin: 0; color: var(--red); font-size: 13px; font-weight: 750; }.account-actions { display: flex; gap: 10px; margin: 24px 0 34px; }.account-card section { padding-top: 22px; border-top: 1px solid var(--line); }.order-list { display: grid; gap: 8px; }.order-item { padding: 14px; border: 1px solid var(--line); border-radius: 9px; }.order-item p { margin: 0; }.order-item small { color: var(--ink-soft); }.toast { position: fixed; z-index: 80; right: 22px; bottom: 22px; max-width: 420px; padding: 14px 18px; border-radius: 10px; background: var(--ink); color: white; box-shadow: var(--shadow); opacity: 0; transform: translateY(15px); pointer-events: none; transition: .2s ease; }.toast.show { opacity: 1; transform: none; }

.policy-page { min-height: 100vh; background: var(--white); }.policy-header { padding: 22px max(24px, calc((100vw - 900px) / 2)); border-bottom: 1px solid var(--line); }.policy-main { width: min(900px, calc(100% - 40px)); margin: 0 auto; padding: 70px 0 110px; }.policy-main h1 { font-family: Georgia, "Noto Serif KR", serif; font-size: clamp(38px, 5vw, 58px); letter-spacing: -.055em; }.policy-main h2 { margin-top: 45px; font-size: 23px; }.policy-main p, .policy-main li { color: var(--ink-soft); }.policy-alert { padding: 18px 20px; border: 1px solid #d8b77d; border-radius: 10px; background: var(--amber-soft); color: #6c4709 !important; }.payment-result { display: grid; place-items: center; min-height: 100vh; padding: 20px; }.result-card { width: min(580px, 100%); padding: 42px; border: 1px solid var(--line); border-radius: 18px; background: var(--white); box-shadow: var(--shadow); text-align: center; }.result-mark { display: grid; place-items: center; width: 64px; height: 64px; margin: 0 auto 20px; border-radius: 50%; background: var(--green-soft); color: var(--green); font-size: 31px; font-weight: 900; }.result-card h1 { margin: 0; }.result-card p { color: var(--ink-soft); }

@media (max-width: 980px) {
  .site-header { grid-template-columns: 1fr auto; }.site-header nav { display: none; }.header-actions .compact { display: none; }
  .hero { grid-template-columns: 1fr; min-height: 0; gap: 54px; }.hero-copy { max-width: 760px; }.product-window { transform: none; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }.workflow-grid, .security-section { grid-template-columns: 1fr; gap: 50px; }.security-section { padding: 50px; }
  .final-cta { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 680px) {
  .section-shell { width: min(100% - 28px, 1180px); }.site-header { min-height: 62px; padding: 9px 14px; }.brand-mark { width: 32px; height: 32px; }.header-actions { gap: 4px; }.text-button { font-size: 13px; }
  .hero { padding-block: 60px 70px; }.hero h1 { font-size: clamp(42px, 13vw, 58px); }.hero-lead { font-size: 16px; }.hero-actions, .final-cta > div:last-child { align-items: stretch; flex-direction: column; }.hero-actions .button { width: 100%; }
  .metric-grid { grid-template-columns: 1fr; }.ledger-row { grid-template-columns: 1fr auto; gap: 4px 12px; }.ledger-row.head { display: none; }.ledger-row > :nth-child(2) { grid-column: 1; }.ledger-row > :nth-child(3), .ledger-row > :nth-child(4) { grid-column: 2; }.ledger-row > :nth-child(3) { grid-row: 1; }.ledger-row > :nth-child(4) { grid-row: 2; }
  .outcome-strip { grid-template-columns: 1fr; gap: 20px; padding-block: 38px; }.content-section { padding-block: 90px; }.feature-grid, .pricing-grid { grid-template-columns: 1fr; }.feature-grid article { min-height: 220px; }.feature-grid h3 { margin-top: 34px; }
  .workflow-section { padding-block: 80px; }.workflow-grid { gap: 24px; }.security-section { width: calc(100% - 20px); margin-block: 80px; padding: 34px 24px; }.release-grid article { grid-template-columns: 48px 1fr; }.release-grid .button { grid-column: 1 / -1; width: 100%; }
  .final-cta { padding-block: 62px; }.final-cta h2 { font-size: 40px; }footer { grid-template-columns: 1fr; }.footer nav { grid-column: 1; grid-row: auto; flex-wrap: wrap; }.footer small { grid-column: 1; }.dialog-card { padding: 26px 20px; }.form-grid { grid-template-columns: 1fr; }.account-actions { flex-direction: column; }.toast { right: 12px; bottom: 12px; left: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}