:root {
  --ink: #2e3440;
  --ink-soft: #4c566a;
  --paper: #eceff4;
  --paper-deep: #e5e9f0;
  --line: #d8dee9;
  --frost-teal: #8fbcbb;
  --frost-blue: #88c0d0;
  --frost-slate: #81a1c1;
  --frost-deep: #5e81ac;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Manrope, 'Noto Sans KR', sans-serif; }

.topbar {
  height: 82px; padding: 0 clamp(24px, 5vw, 82px); display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid rgba(46, 52, 64, .12); background: rgba(236, 239, 244, .88); backdrop-filter: blur(12px);
  position: sticky; top: 0; z-index: 10;
}
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); font-size: 20px; font-weight: 800; letter-spacing: -1px; text-decoration: none; }
.brand-mark { width: 25px; height: 25px; display: grid; place-items: center; border-radius: 7px; background: var(--ink); color: #eceff4; font-family: 'DM Mono', monospace; font-size: 16px; line-height: 1; }
.topbar nav { display: flex; gap: 35px; margin-left: 76px; }
.topbar nav a { color: var(--ink-soft); font-size: 14px; font-weight: 700; text-decoration: none; }
.topbar nav a:hover { color: var(--ink); }
.header-cta { padding: 11px 17px; border-radius: 100px; background: var(--ink); color: #eceff4; font-size: 13px; font-weight: 700; text-decoration: none; }
.header-cta span { color: var(--frost-blue); margin-left: 5px; }

.hero { min-height: 544px; padding: 99px 24px 88px; overflow: hidden; position: relative; text-align: center; background: radial-gradient(circle at 50% 46%, #d8e5eb 0, #e5e9f0 38%, var(--paper) 72%); }
.hero::before, .hero::after { content: ''; position: absolute; left: 50%; top: 42%; width: 330px; height: 330px; border: 1px solid rgba(46, 52, 64, .11); border-radius: 50%; transform: translate(-50%, -50%); }
.hero::after { width: 510px; height: 510px; border-style: dashed; opacity: .7; }
.hero > * { position: relative; z-index: 1; }
.eyebrow, .section-label { font-family: 'DM Mono', monospace; font-size: 11px; font-weight: 500; letter-spacing: .08em; }
.eyebrow { display: flex; align-items: center; justify-content: center; gap: 8px; color: var(--ink-soft); }
.eyebrow span { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--frost-deep); }
.hero h1 { margin: 20px 0 17px; font-size: clamp(44px, 6vw, 78px); line-height: 1.12; letter-spacing: -.075em; }
.hero h1 em { color: var(--frost-deep); font-style: normal; }
.hero p { margin: 0; color: var(--ink-soft); font-size: 15px; font-weight: 500; line-height: 1.75; }
.hero-cta { display: inline-flex; align-items: center; gap: 30px; margin-top: 31px; padding: 15px 18px 15px 22px; border: 1px solid rgba(46, 52, 64, .12); border-radius: 999px; background: #b9d8e1; box-shadow: 0 4px 0 #8eb6c5; color: var(--ink); font-size: 14px; font-weight: 800; text-decoration: none; }
.hero-cta:hover { background: #a9ceda; }
.hero-cta span { font-size: 18px; }

.tool-section { display: grid; grid-template-columns: 280px 1fr; gap: clamp(44px, 8vw, 145px); padding: 98px clamp(24px, 8vw, 136px) 112px; }
.section-label { margin: 4px 0 18px; color: var(--frost-deep); }
.section-heading h2, .flow h2 { margin: 0; font-size: clamp(33px, 4vw, 52px); line-height: 1.18; letter-spacing: -.07em; }
.section-heading > p:last-child, .flow-head > p { margin: 22px 0 0; color: var(--ink-soft); font-size: 14px; line-height: 1.75; }
.tool-grid { display: grid; grid-template-columns: repeat(3, minmax(180px, 1fr)); gap: 14px; }
.tool-card { min-height: 357px; padding: 19px 19px 16px; display: flex; flex-direction: column; border: 1px solid rgba(46, 52, 64, .08); border-radius: 16px; color: var(--ink); text-decoration: none; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.tool-card:hover { border-color: rgba(46, 52, 64, .20); box-shadow: 0 16px 30px rgba(46, 52, 64, .12); transform: translateY(-5px); }
.image-card { background: #c9dcda; }
.pdf-card { background: #d7ddec; }
.calc-card { background: #c8dce8; }
.card-top { display: flex; justify-content: space-between; font-family: 'DM Mono', monospace; font-size: 11px; color: var(--ink-soft); }
.launch { font-family: Manrope, 'Noto Sans KR', sans-serif; font-size: 11px; font-weight: 800; }
.launch b { margin-left: 4px; font-size: 15px; }
.icon-wrap { width: 72px; height: 72px; display: grid; place-items: center; margin: auto 0 28px; border: 1px solid rgba(46, 52, 64, .08); border-radius: 22px; background: rgba(236, 239, 244, .52); }
.icon-wrap svg { width: 45px; height: 45px; }
.image-icon { color: #4f7778; }
.pdf-icon { color: #667aa4; }
.calc-icon { color: #4d7d95; }
.tool-card h3 { margin: 0 0 6px; font-size: 21px; letter-spacing: -.05em; }
.tool-card p { margin: 0; color: var(--ink-soft); font-size: 12px; font-weight: 600; }
.domain { margin-top: 20px; color: var(--frost-deep); font-family: 'DM Mono', monospace; font-size: 10px; }

.choose { padding: 90px clamp(24px, 8vw, 136px); background: var(--paper-deep); }
.choose-heading { display: grid; grid-template-columns: 1.1fr 1fr; column-gap: 8vw; align-items: end; }
.choose-heading .section-label { grid-column: 1 / -1; }
.choose h2 { margin: 0; font-size: clamp(33px, 4vw, 52px); line-height: 1.18; letter-spacing: -.07em; }
.choose-heading > p:last-child { margin: 0 0 4px; color: var(--ink-soft); font-size: 14px; line-height: 1.75; }
.choice-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 48px; border: 1px solid #c7d0dd; background: #c7d0dd; }
.choice-grid a { min-height: 257px; padding: 24px; display: flex; flex-direction: column; background: #f4f6fa; color: var(--ink); text-decoration: none; transition: background .2s ease; }
.choice-grid a:hover { background: #e8edf3; }
.choice-grid span { color: var(--frost-deep); font-family: 'DM Mono', monospace; font-size: 11px; }
.choice-grid h3 { margin: 36px 0 10px; font-size: 21px; line-height: 1.3; letter-spacing: -.05em; }
.choice-grid p { margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.65; }
.choice-grid b { margin-top: auto; padding-top: 22px; font-size: 12px; }

.flow { padding: 70px clamp(24px, 8vw, 136px) 97px; background: #2e3440; color: #eceff4; }
.flow .section-label { color: var(--frost-blue); }
.flow-head { display: flex; align-items: flex-end; justify-content: space-between; }
.flow-head h2 { color: #fff; }
.flow-head > p { margin: 0; color: #d8dee9; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 68px; }
.steps > div { padding-top: 17px; border-top: 1px solid rgba(216, 222, 233, .28); }
.steps span { color: var(--frost-teal); font-family: 'DM Mono', monospace; font-size: 12px; }
.steps h3 { margin: 34px 0 8px; font-size: 18px; }
.steps p { margin: 0; color: #d8dee9; font-size: 13px; line-height: 1.6; }

footer { display: flex; align-items: center; justify-content: space-between; padding: 30px clamp(24px, 5vw, 82px); color: #4c566a; font-size: 12px; }
footer p { margin: 0; }
footer span:last-child { font-family: 'DM Mono', monospace; font-size: 10px; }
footer nav { display: flex; gap: 18px; }
footer nav a { color: inherit; font-size: 12px; font-weight: 700; text-decoration: none; }
footer nav a:hover { color: var(--ink); }

@media (max-width: 800px) {
  .topbar { height: 70px; }
  .topbar nav { display: none; }
  .header-cta { padding: 9px 13px; }
  .hero { min-height: 500px; padding-top: 79px; }
  .hero h1 { font-size: 48px; }
  .desktop-break { display: none; }
  .tool-section { display: block; padding-top: 70px; }
  .section-heading { margin-bottom: 42px; }
  .tool-grid, .choice-grid, .steps { grid-template-columns: 1fr; }
  .tool-card { min-height: 280px; }
  .choose { padding-top: 68px; padding-bottom: 68px; }
  .choose-heading { display: block; }
  .choose-heading > p:last-child { margin-top: 18px; }
  .choice-grid { margin-top: 34px; }
  .choice-grid a { min-height: 220px; }
  .flow-head { display: block; }
  .flow-head > p { margin-top: 18px; }
  .steps { gap: 28px; margin-top: 50px; }
  .steps h3 { margin-top: 20px; }
  footer { display: grid; gap: 18px; }
  footer nav { flex-wrap: wrap; gap: 14px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .tool-card { transition: none; } }