:root {
    --bg: #ffffff;
    --fg: #0a0a0a;
    --muted: #f5f7fb;
    --muted-fg: #64748b;
    --border: #e5e7eb;
    --primary: #2563eb;
    --primary-soft: #eff6ff;
    --primary-fg: #ffffff;
    --radius: 12px;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    background: var(--bg);
    color: var(--fg);
    line-height: 1.6;
    word-break: keep-all;
    -webkit-font-smoothing: antialiased;
  }
  a { color: inherit; text-decoration: none; }
  .container { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

  header {
    position: sticky; top: 0; z-index: 10;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
  }
  .nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
  .logo { font-weight: 800; font-size: 18px; letter-spacing: -0.02em; }
  .logo span { color: var(--primary); }
  .nav-links { display: flex; gap: 24px; font-size: 14px; color: var(--muted-fg); }
  .nav-links a:hover { color: var(--fg); }

  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    height: 40px; padding: 0 18px; border-radius: 8px;
    font-size: 14px; font-weight: 600; transition: background .15s, border-color .15s;
  }
  .btn-primary { background: var(--primary); color: var(--primary-fg); }
  .btn-primary:hover { background: #1d4ed8; }
  .btn-outline { border: 1px solid var(--border); background: #fff; }
  .btn-outline:hover { background: var(--muted); }

  .hero { padding: 96px 0 72px; text-align: center; }
  .badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 4px 12px; border-radius: 999px;
    border: 1px solid #bfdbfe; background: var(--primary-soft);
    color: var(--primary); font-size: 13px; font-weight: 600;
  }
  .badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }
  h1 {
    margin: 24px auto 0; max-width: 760px;
    font-size: clamp(36px, 6vw, 60px); line-height: 1.1;
    font-weight: 800; letter-spacing: -0.035em;
  }
  h1 em { font-style: normal; color: var(--primary); }
  .lead { margin: 20px auto 0; max-width: 620px; font-size: 18px; color: var(--muted-fg); }
  .lead-ko { margin-top: 8px; font-size: 15px; }
  .hero-actions { margin-top: 32px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

  section { padding: 72px 0; }
  .section-head { margin-bottom: 32px; }
  .eyebrow { font-size: 13px; font-weight: 700; color: var(--primary); letter-spacing: 0.04em; text-transform: uppercase; }
  h2 { margin-top: 8px; font-size: clamp(26px, 4vw, 34px); font-weight: 800; letter-spacing: -0.03em; line-height: 1.2; }
  .section-sub { margin-top: 8px; color: var(--muted-fg); }

  .grid { display: grid; gap: 16px; grid-template-columns: repeat(3, 1fr); }
  .card {
    border: 1px solid var(--border); border-radius: var(--radius);
    padding: 24px; background: #fff;
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
  }
  .card-icon {
    width: 40px; height: 40px; border-radius: 10px;
    display: grid; place-items: center;
    background: var(--primary-soft); color: var(--primary);
  }
  .card h3 { margin-top: 16px; font-size: 18px; font-weight: 700; letter-spacing: -0.02em; }
  .card p { margin-top: 8px; font-size: 15px; color: var(--muted-fg); }
  .card .ko { margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--border); font-size: 14px; }


  .services { display: grid; gap: 24px; }
  .service {
    display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 40px;
    border: 1px solid var(--border); border-radius: 16px; padding: 24px; background: #fff;
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
  }
  .service:nth-child(even) .service-img { order: 2; }
  .service-img { border-radius: 12px; overflow: hidden; background: #f8fafc; }
  .service-img img { display: block; width: 100%; height: auto; }
  .service-num { font-size: 13px; font-weight: 700; color: var(--primary); font-variant-numeric: tabular-nums; }
  .service h3 { margin-top: 6px; font-size: 24px; font-weight: 800; letter-spacing: -0.03em; }
  .service h3 small { display: block; margin-top: 2px; font-size: 15px; font-weight: 600; color: var(--muted-fg); letter-spacing: 0; }
  .service p { margin-top: 12px; color: var(--muted-fg); }
  .service p.ko { margin-top: 6px; font-size: 14px; }
  .service ul { margin-top: 16px; list-style: none; display: grid; gap: 8px; }
  .service li { display: flex; gap: 10px; align-items: center; font-size: 14px; font-weight: 500; }
  .service li::before {
    content: ""; flex: none; width: 18px; height: 18px; border-radius: 50%;
    background: var(--primary-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232563eb' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center/11px no-repeat;
  }

  .band { background: var(--muted); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
  .stack { display: grid; gap: 12px; grid-template-columns: repeat(2, 1fr); }
  .row {
    display: flex; gap: 16px; align-items: flex-start;
    border: 1px solid var(--border); border-radius: var(--radius);
    background: #fff; padding: 20px;
  }
  .row-num {
    flex: none; width: 28px; height: 28px; border-radius: 8px;
    background: var(--primary); color: #fff; font-size: 13px; font-weight: 700;
    display: grid; place-items: center;
  }
  .row h4 { font-size: 16px; font-weight: 700; letter-spacing: -0.01em; }
  .row p { margin-top: 4px; font-size: 14px; color: var(--muted-fg); }

  .channels { display: flex; gap: 12px; flex-wrap: wrap; }
  .chip {
    display: inline-flex; align-items: center; gap: 10px;
    border: 1px solid var(--border); border-radius: 10px;
    padding: 12px 16px; font-size: 15px; font-weight: 600; background: #fff;
  }
  .chip small { color: var(--muted-fg); font-weight: 500; }
  a.chip:hover { border-color: #bfdbfe; background: var(--primary-soft); }

  .cta {
    border-radius: 16px; padding: 48px 32px; text-align: center;
    background: linear-gradient(135deg, #1d4ed8, #3b82f6);
    color: #fff;
  }
  .cta h2 { color: #fff; }
  .cta p { margin-top: 8px; color: #dbeafe; }
  .cta .btn { margin-top: 24px; background: #fff; color: var(--primary); }
  .cta .btn:hover { background: #eff6ff; }

  footer { border-top: 1px solid var(--border); padding: 32px 0; font-size: 13px; color: var(--muted-fg); }
  .foot { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

  @media (max-width: 820px) {
    .grid { grid-template-columns: 1fr; }
    .stack { grid-template-columns: 1fr; }
    .service { grid-template-columns: 1fr; gap: 20px; padding: 16px; }
    .service:nth-child(even) .service-img { order: 0; }
    .nav-links { display: none; }
    .hero { padding: 64px 0 48px; }
    section { padding: 56px 0; }
  }
  @media (max-width: 480px) {
    .container { padding: 0 16px; }
    .cta { padding: 36px 20px; }
  }

  .nav-right { display: flex; align-items: center; gap: 12px; }
  .lang { font-size: 13px; font-weight: 600; color: var(--muted-fg); border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; }
  .lang:hover { color: var(--fg); background: var(--muted); }
  .nav-links a.active { color: var(--fg); font-weight: 600; }

  .gallery { display: grid; gap: 16px; grid-template-columns: repeat(2, 1fr); }
  .photo { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: #fff; }
  .photo img { display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
  .photo figcaption { padding: 14px 16px; }
  .photo b { display: block; font-size: 15px; font-weight: 700; letter-spacing: -0.01em; }
  .photo span { font-size: 13px; color: var(--muted-fg); }

  .awards { display: grid; gap: 16px; grid-template-columns: 1fr 1fr 1fr; align-items: stretch; }
  .award { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: #fff; display: flex; flex-direction: column; }
  .award img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: var(--muted); }
  .award div { padding: 16px; }
  .award .tag { display: inline-block; font-size: 12px; font-weight: 700; color: var(--primary); background: var(--primary-soft); border-radius: 999px; padding: 2px 10px; }
  .award h3 { margin-top: 10px; font-size: 16px; font-weight: 700; letter-spacing: -0.01em; line-height: 1.4; }
  .award p { margin-top: 4px; font-size: 13px; color: var(--muted-fg); }

  .about { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
  .about-imgs { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
  .about-imgs img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; border-radius: var(--radius); border: 1px solid var(--border); display: block; }
  .about p { margin-top: 12px; color: var(--muted-fg); }
  .stats { margin-top: 24px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .stat { border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; }
  .stat b { display: block; font-size: 22px; font-weight: 800; color: var(--primary); letter-spacing: -0.02em; }
  .stat span { font-size: 12px; color: var(--muted-fg); }

  .tips { display: grid; gap: 20px; }
  .tip { border: 1px solid var(--border); border-radius: 16px; padding: 28px; background: #fff; box-shadow: 0 1px 2px rgba(0,0,0,0.04); }
  .tip-head { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; align-items: center; }
  .tip-num { font-size: 13px; font-weight: 700; color: var(--primary); }
  .views { font-size: 12px; font-weight: 700; color: var(--primary); background: var(--primary-soft); border-radius: 999px; padding: 3px 10px; }
  .tip h3 { margin-top: 8px; font-size: 22px; font-weight: 800; letter-spacing: -0.03em; line-height: 1.3; }
  .tip .sum { margin-top: 8px; color: var(--muted-fg); }
  .tools { margin-top: 14px; display: flex; gap: 6px; flex-wrap: wrap; }
  .tools span { font-size: 12px; font-weight: 600; border: 1px solid var(--border); border-radius: 6px; padding: 2px 8px; }
  .steps { margin-top: 18px; list-style: none; counter-reset: s; display: grid; gap: 10px; }
  .steps li { counter-increment: s; display: flex; gap: 12px; font-size: 15px; }
  .steps li::before { content: counter(s); flex: none; width: 24px; height: 24px; border-radius: 7px; background: var(--primary); color: #fff; font-size: 12px; font-weight: 700; display: grid; place-items: center; margin-top: 1px; }
  .point { margin-top: 16px; padding: 12px 14px; border-radius: 10px; background: var(--muted); font-size: 14px; }
  .point b { color: var(--primary); }
  .tip .more { margin-top: 16px; display: inline-flex; font-size: 14px; font-weight: 600; color: var(--primary); }
  .tip .more:hover { text-decoration: underline; }

  @media (max-width: 820px) {
    .gallery, .awards, .about { grid-template-columns: 1fr; }
    .tip { padding: 20px; }
    .tip h3 { font-size: 19px; }
  }

  .intro { padding: 72px 0 56px; }
  .intro-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: center; }
  .intro h1 { margin: 20px 0 0; text-align: left; max-width: none; }
  .intro .lead { margin: 20px 0 0; text-align: left; max-width: 560px; }
  .intro-p { margin-top: 12px; color: var(--muted-fg); font-size: 15px; max-width: 560px; }
  .intro .hero-actions { justify-content: flex-start; }
  .intro-img img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: center 30%; border-radius: 20px; border: 1px solid var(--border); display: block; }
  .intro .stats { margin-top: 40px; grid-template-columns: repeat(3, 1fr); }

  .book { display: grid; grid-template-columns: 300px 1fr; gap: 56px; align-items: center; }
  .book-cover img { width: 100%; display: block; border-radius: 6px; box-shadow: 0 20px 40px -12px rgba(15, 23, 42, 0.35); transform: rotate(-2deg); }
  .book-meta { margin-top: 6px; font-size: 14px; font-weight: 600; color: var(--primary); }
  .book p:not(.book-meta) { margin-top: 12px; color: var(--muted-fg); }
  .toc { margin: 20px 0 24px; display: flex; flex-wrap: wrap; gap: 6px; }
  .toc span { font-size: 13px; font-weight: 600; border: 1px solid var(--border); background: #fff; border-radius: 999px; padding: 4px 12px; }

  .community { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
  .join { margin-top: 24px; list-style: none; counter-reset: j; display: grid; gap: 12px; }
  .join li { counter-increment: j; display: grid; grid-template-columns: 32px 1fr; column-gap: 12px; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
  .join li::before { content: counter(j); grid-row: span 2; width: 32px; height: 32px; border-radius: 9px; background: var(--primary); color: #fff; font-weight: 700; display: grid; place-items: center; }
  .join b { font-size: 15px; }
  .join span { font-size: 14px; color: var(--muted-fg); }
  .form-box { border: 1px solid var(--border); border-radius: 16px; padding: 20px; background: #fff; box-shadow: 0 1px 2px rgba(0,0,0,0.04); min-height: 200px; }

  .divider { display: flex; align-items: center; gap: 16px; margin: 24px 0 -24px; color: var(--muted-fg); font-size: 13px; font-weight: 700; letter-spacing: 0.04em; }
  .divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }

  @media (max-width: 820px) {
    .intro-grid, .book, .community { grid-template-columns: 1fr; gap: 28px; }
    .intro .stats { grid-template-columns: repeat(3, 1fr); }
    .book-cover { max-width: 220px; }
    .intro-img { max-width: 360px; }
  }

  @media (max-width: 820px) {
    .nav { flex-wrap: wrap; height: auto; padding-top: 10px; padding-bottom: 8px; row-gap: 6px; }
    header .nav-links { display: flex; order: 3; width: 100%; overflow-x: auto; gap: 18px; padding: 4px 0; white-space: nowrap; scrollbar-width: none; }
    header .nav-links::-webkit-scrollbar { display: none; }
  }

  .com-card { display: flex; justify-content: space-between; align-items: center; gap: 32px; border: 1px solid var(--border); border-radius: 16px; padding: 32px; background: linear-gradient(135deg, #eff6ff, #ffffff); }
  .com-steps { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
  .com-steps span { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; background: #fff; border: 1px solid var(--border); border-radius: 999px; padding: 6px 14px 6px 6px; }
  .com-steps i { font-style: normal; width: 22px; height: 22px; border-radius: 50%; background: var(--primary); color: #fff; font-size: 12px; display: grid; place-items: center; }
  .com-card .btn { flex: none; height: 48px; padding: 0 24px; font-size: 15px; }
  @media (max-width: 820px) { .com-card { flex-direction: column; align-items: flex-start; padding: 24px; } }

  .guides { display: grid; gap: 16px; grid-template-columns: repeat(3, 1fr); }
  .guide { display: flex; flex-direction: column; gap: 8px; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; background: #fff; transition: border-color .15s, box-shadow .15s, transform .15s; }
  .guide:hover { border-color: #bfdbfe; box-shadow: 0 8px 24px -12px rgba(37, 99, 235, 0.35); transform: translateY(-2px); }
  .g-date { font-size: 12px; font-weight: 600; color: var(--muted-fg); font-variant-numeric: tabular-nums; }
  .guide h3 { font-size: 17px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.4; }
  .g-sub { font-size: 13px; color: var(--muted-fg); }
  .g-more { margin-top: auto; padding-top: 8px; font-size: 13px; font-weight: 600; color: var(--primary); }
  .g-note { margin-top: 8px; font-size: 13px; color: var(--muted-fg); }
  @media (max-width: 960px) { .guides { grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 560px) { .guides { grid-template-columns: 1fr; } }