:root {
  --color-bg: #ffffff;
  --color-bg-soft: #f5f6fa;
  --color-text: #16181d;
  --color-text-muted: #5a5f6b;
  --color-ink: #0c0e13;
  --color-accent: #3a5ddb;
  --color-accent-dark: #2944a8;
  --color-border: #e6e8ef;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  --font-mono: "SF Mono", "Consolas", monospace;
  --max-width: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font-base); color: var(--color-text); background: var(--color-bg); line-height: 1.65; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 18px; font-weight: 800; letter-spacing: -0.02em; }
h1 { font-size: 3.2rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.2rem; }
p { margin: 0 0 16px; color: var(--color-text-muted); }
a { color: var(--color-accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.72rem; color: var(--color-accent-dark); font-weight: 700; margin-bottom: 10px; }
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--color-accent); display: inline-block; }
.center { text-align: center; }
.eyebrow.center { justify-content: center; }

.btn { display: inline-block; padding: 13px 26px; border-radius: 6px; font-weight: 700; font-size: 0.95rem; cursor: pointer; border: 1px solid transparent; }
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-dark); text-decoration: none; }
.btn-ghost { background: transparent; border: 1px solid rgba(255,255,255,0.45); color: #fff; }
.btn-ghost:hover { border-color: #fff; text-decoration: none; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(12,14,19,0.94); backdrop-filter: blur(6px); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 18px 24px; }
.logo { display: flex; align-items: center; gap: 9px; font-size: 1.25rem; font-weight: 800; color: #fff; font-family: var(--font-base); letter-spacing: -0.01em; }
.logo img { display: block; height: 32px; width: auto; }
.logo span { color: var(--color-accent); }
.site-header nav ul { list-style: none; display: flex; gap: 26px; margin: 0; padding: 0; }
.site-header nav a { color: rgba(255,255,255,0.82); font-weight: 600; font-size: 0.9rem; }
.header-cta { white-space: nowrap; }

.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 32px; height: 32px; background: none; border: none; cursor: pointer; padding: 0; }
.nav-toggle span { display: block; width: 100%; height: 2px; background: #fff; transition: transform 0.2s, opacity 0.2s; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav { display: none; }
.mobile-nav.is-open { display: block; }
.mobile-nav ul { list-style: none; margin: 0; padding: 12px 24px 20px; display: flex; flex-direction: column; gap: 4px; }
.mobile-nav a { display: block; padding: 10px 0; color: rgba(255,255,255,0.85); font-weight: 600; font-size: 0.95rem; border-top: 1px solid rgba(255,255,255,0.08); }
.mobile-nav li:first-child a { border-top: none; }

/* Hero */
.hero { background: linear-gradient(rgba(12,14,19,0.88), rgba(12,14,19,0.93)), url("images/hero-bg.jpg") center/cover no-repeat; color: #fff; padding: 120px 0 128px; }
.hero .eyebrow { color: #aebdf7; }
.hero h1 { color: #fff; max-width: 820px; }
.hero-sub { font-size: 1.2rem; max-width: 660px; color: rgba(255,255,255,0.75); }
.hero-actions { display: flex; gap: 12px; margin-top: 36px; }
.hero-tool-note { margin: 14px 0 0; font-size: 0.86rem; color: rgba(255,255,255,0.55); }

/* Channels */
.channels-bar { padding: 40px 0; background: var(--color-bg-soft); border-bottom: 1px solid var(--color-border); }
.channels-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; text-align: center; }
.channel-group { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.channel-number { font-size: 1.9rem; color: var(--color-accent-dark); font-family: var(--font-mono); line-height: 1; }
.channel-label { font-size: 0.85rem; color: var(--color-text-muted); }
.channel-badges { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.channel-badges .badge { font-size: 0.78rem; font-weight: 700; color: var(--color-accent-dark); background: #fff; border: 1px solid var(--color-border); border-radius: 20px; padding: 4px 12px; }
.channel-badges.flags { font-size: 1.3rem; gap: 8px; }

.section { padding: 104px 0; }

/* Portfolio grid */
.portfolio-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.portfolio-card { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: 14px; overflow: hidden; display: flex; flex-direction: column; transition: transform 0.15s ease, box-shadow 0.15s ease; }
.portfolio-card:hover { transform: translateY(-4px); box-shadow: 0 14px 32px rgba(20,22,35,0.1); }
.portfolio-swatch { min-height: 130px; display: flex; align-items: flex-end; padding: 16px 18px; }
.portfolio-swatch span { font-family: var(--font-mono); font-size: 0.72rem; color: rgba(255,255,255,0.85); background: rgba(0,0,0,0.18); padding: 4px 10px; border-radius: 20px; }
.portfolio-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.portfolio-body h3 { margin-bottom: 6px; }
.portfolio-tag { font-size: 0.78rem; color: var(--color-text-muted); font-family: var(--font-mono); margin-bottom: 10px; }
.portfolio-body p { font-size: 0.92rem; flex: 1; }
.portfolio-body a.btn { align-self: flex-start; margin-top: 8px; padding: 10px 18px; font-size: 0.85rem; }

.swatch-1 { background: linear-gradient(135deg, #7c9885, #5e7a68); }
.swatch-2 { background: linear-gradient(135deg, #2a1f14, #c79a56); }
.swatch-3 { background: linear-gradient(135deg, #2bb3a3, #1d8f82); }
.swatch-4 { background: linear-gradient(135deg, #0d1b2e, #2e6fd9); }
.swatch-5 { background: linear-gradient(135deg, #5c4632, #2f3b52); }
.swatch-6 { background: linear-gradient(135deg, #14161c, #6a5cff); }

/* Journey */
.journey-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 40px; counter-reset: none; }
.journey-step { position: relative; background: var(--color-bg-soft); border: 1px solid var(--color-border); border-radius: 12px; padding: 28px 20px 22px; text-align: center; }
.journey-step::after { content: "→"; position: absolute; top: 50%; right: -28px; transform: translateY(-50%); color: var(--color-border); font-size: 1.4rem; }
.journey-step:last-child::after { content: none; }
.journey-num { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background: var(--color-accent); color: #fff; font-family: var(--font-mono); font-weight: 700; margin-bottom: 14px; }
.journey-step h3 { margin-bottom: 6px; font-size: 1.05rem; }
.journey-step p { margin: 0; font-size: 0.86rem; }
.journey-note { color: var(--color-text-muted); font-size: 0.9rem; margin-top: 28px; }

/* Why section */
.why { background: var(--color-bg-soft); }
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; margin-top: 40px; }
.why-card { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: 12px; padding: 28px 24px; }
.why-card h3 { color: var(--color-text); }

/* Checklist */
.checklist { background: var(--color-bg-soft); }
.checklist-grid { list-style: none; display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; max-width: 760px; margin: 36px auto 0; padding: 0; }
.checklist-grid li { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: 10px; padding: 16px 18px; font-size: 0.92rem; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.check-mark { display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border-radius: 50%; background: var(--color-accent); color: #fff; font-size: 0.78rem; font-weight: 800; flex-shrink: 0; }

/* FAQ */
.faq-list { max-width: 720px; margin: 40px auto 0; display: flex; flex-direction: column; gap: 10px; }
.faq-item { background: var(--color-bg-soft); border: 1px solid var(--color-border); border-radius: 10px; padding: 4px 20px; }
.faq-item summary { padding: 16px 0; font-weight: 700; cursor: pointer; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; float: right; color: var(--color-accent-dark); font-weight: 800; }
.faq-item[open] summary::after { content: "-"; }
.faq-item p { padding: 0 0 18px; margin: 0; font-size: 0.92rem; }

/* CTA */
.cta { background: var(--color-ink); color: #fff; text-align: center; }
.cta h2 { color: #fff; }
.cta p { color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 28px; }

/* Footer */
.site-footer { background: var(--color-ink); color: rgba(255,255,255,0.55); padding: 28px 0; font-size: 0.85rem; }
.footer-contact { margin-top: 4px; font-size: 0.85rem; }
.footer-disclaimer { margin-top: 4px; font-style: italic; }
.footer-tools { margin-top: 10px; font-size: 0.8rem; }
.footer-tools a { color: rgba(255,255,255,0.75); }

@media (max-width: 900px) {
  .site-header nav { display: none; }
  .header-cta { display: none; }
  .nav-toggle { display: flex; }
  h1 { font-size: 2.1rem; }
  .channels-grid { grid-template-columns: repeat(2, 1fr); }
  .portfolio-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .journey-grid { grid-template-columns: 1fr; }
  .checklist-grid { grid-template-columns: 1fr; }
  .journey-step::after { content: "↓"; top: auto; right: auto; left: 50%; bottom: -28px; transform: translateX(-50%); }
}

/* Mobile line-wrap fix: Korean text wraps at word boundaries, not mid-syllable */
body { word-break: keep-all; overflow-wrap: break-word; }
@media (max-width: 640px) {
  .lg-break { display: none; }
}