@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@500;700;800&family=Noto+Sans+KR:wght@400;500;700&display=swap');

    :root {
      --bg-0: #f4f8fb;
      --bg-1: #e7f0fb;
      --ink-0: #0f172a;
      --ink-1: #334155;
      --line: #d6e2f2;
      --surface: rgba(255, 255, 255, 0.84);
      --surface-strong: #ffffff;
      --brand: #0ea5a4;
      --brand-strong: #0f766e;
      --accent: #f59e0b;
      --shadow: 0 20px 50px rgba(15, 23, 42, 0.14);
      --radius-lg: 24px;
      --radius-md: 14px;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      min-height: 100vh;
      color: var(--ink-0);
      font-family: 'Noto Sans KR', 'Apple SD Gothic Neo', sans-serif;
      background:
        radial-gradient(circle at 15% 20%, #c9f3ea 0%, transparent 33%),
        radial-gradient(circle at 83% 12%, #dbeafe 0%, transparent 28%),
        linear-gradient(135deg, var(--bg-0), var(--bg-1));
      display: grid;
      place-items: center;
      padding: 20px;
    }

    .aurora {
      position: fixed;
      inset: 0;
      z-index: 0;
      pointer-events: none;
      overflow: hidden;
    }

    .aurora::before,
    .aurora::after {
      content: '';
      position: absolute;
      border-radius: 999px;
      filter: blur(10px);
      opacity: 0.45;
      animation: float 9s ease-in-out infinite;
    }

    .aurora::before {
      width: 360px;
      height: 360px;
      background: #99f6e4;
      top: -110px;
      left: -100px;
    }

    .aurora::after {
      width: 420px;
      height: 420px;
      background: #bfdbfe;
      right: -150px;
      bottom: -160px;
      animation-delay: 1.8s;
    }

    .wrap {
      width: min(920px, 100%);
      position: relative;
      z-index: 1;
    }

    .shell {
      border: 1px solid rgba(255, 255, 255, 0.65);
      border-radius: var(--radius-lg);
      background: var(--surface);
      backdrop-filter: blur(16px);
      box-shadow: var(--shadow);
      overflow: hidden;
      animation: rise-up 0.7s ease both;
    }

    .hero {
      padding: 30px 28px 22px;
      border-bottom: 1px solid var(--line);
      background: linear-gradient(110deg, rgba(14, 165, 164, 0.1), rgba(245, 158, 11, 0.08));
      position: relative;
    }

    .hero-nav {
      position: absolute;
      top: 20px;
      right: 22px;
      display: flex;
      gap: 8px;
    }

    .hero-nav a {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 7px 14px;
      border-radius: 999px;
      font: 700 0.8rem/1 'Manrope', 'Noto Sans KR', sans-serif;
      letter-spacing: 0.02em;
      text-decoration: none;
      transition: background 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
      white-space: nowrap;
    }

    .hero-nav a:hover {
      transform: translateY(-1px);
    }

    .hero-nav .btn-manual {
      background: rgba(255, 255, 255, 0.78);
      color: var(--brand-strong);
      border: 1px solid rgba(14, 165, 164, 0.32);
      box-shadow: 0 2px 8px rgba(14, 165, 164, 0.12);
    }

    .hero-nav .btn-manual:hover {
      background: rgba(255, 255, 255, 0.96);
      box-shadow: 0 4px 14px rgba(14, 165, 164, 0.2);
    }

    .hero-nav .btn-promo {
      background: linear-gradient(135deg, var(--brand), var(--brand-strong));
      color: #ffffff;
      border: 1px solid transparent;
      box-shadow: 0 2px 10px rgba(14, 165, 164, 0.35);
    }

    .hero-nav .btn-promo:hover {
      box-shadow: 0 4px 18px rgba(14, 165, 164, 0.48);      
    }

    .hero-nav .btn-pdf {
      background: linear-gradient(135deg, #c2410c, #9a3412);
      color: #ffffff;
      border: 1px solid transparent;
      box-shadow: 0 2px 10px rgba(194, 65, 12, 0.35);
    }

    .hero-nav .btn-pdf:hover {
      box-shadow: 0 4px 18px rgba(194, 65, 12, 0.5);
    }    

    .eyebrow {
      width: fit-content;
      border-radius: 999px;
      border: 1px solid rgba(14, 165, 164, 0.28);
      color: var(--brand-strong);
      background: rgba(255, 255, 255, 0.62);
      padding: 6px 12px;
      font: 700 12px/1 'Manrope', sans-serif;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    h1 {
      margin: 12px 0 8px;
      font-family: 'Manrope', 'Noto Sans KR', sans-serif;
      font-size: clamp(1.6rem, 3.8vw, 2.25rem);
      line-height: 1.12;
    }

    .hero p {
      margin: 0;
      color: var(--ink-1);
      font-size: 0.95rem;
    }

    .theme-bar {
      margin-top: 14px;
      display: flex;
      gap: 10px;
      align-items: center;
      flex-wrap: wrap;
    }

    .theme-bar label {
      margin: 0;
      font: 700 0.8rem/1 'Manrope', 'Noto Sans KR', sans-serif;
      color: #334155;
      letter-spacing: 0.04em;
      text-transform: uppercase;
    }

    .theme-select {
      border: 1px solid #bfdbfe;
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.9);
      color: #0f172a;
      font: 700 0.86rem/1 'Manrope', 'Noto Sans KR', sans-serif;
      padding: 8px 10px;
      min-width: 210px;
    }

    .theme-select:focus {
      outline: none;
      border-color: #22d3ee;
      box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.18);
    }

    form {
      margin: 0;
      padding: 26px 22px 22px;
      display: grid;
      gap: 14px;
    }

    .field {
      background: var(--surface-strong);
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      padding: 14px;
      transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
      animation: field-in 0.6s ease both;
    }

    .field:nth-child(2) { animation-delay: 0.08s; }
    .field:nth-child(3) { animation-delay: 0.16s; }
    .field:nth-child(4) { animation-delay: 0.24s; }

    .field:focus-within {
      transform: translateY(-2px);
      border-color: #7dd3fc;
      box-shadow: 0 10px 24px rgba(14, 165, 164, 0.18);
    }

    label {
      display: block;
      font: 700 0.88rem/1.2 'Manrope', 'Noto Sans KR', sans-serif;
      margin-bottom: 8px;
      color: #1f2937;
    }

    .hint {
      margin: 0 0 10px;
      color: #64748b;
      font-size: 0.82rem;
    }

    input[type="password"] {
      width: 100%;
      border: 1px solid #dbe7f5;
      border-radius: 10px;
      padding: 12px 13px;
      background: #f8fbff;
      color: #0f172a;
      font: 500 0.98rem/1.3 'Manrope', 'Noto Sans KR', sans-serif;
      transition: border-color 0.2s ease, background-color 0.2s ease;
    }

    input[type="password"]:focus {
      outline: none;
      border-color: #38bdf8;
      background: #ffffff;
    }

    .bottom {
      margin-top: 2px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      color: #64748b;
      font-size: 0.8rem;
      padding: 4px 2px 0;
    }

    .status {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #f0fdf4;
      color: #166534;
      border: 1px solid #bbf7d0;
      border-radius: 999px;
      padding: 6px 10px;
      font-weight: 700;
    }

    .dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #22c55e;
      box-shadow: 0 0 0 6px rgba(34, 197, 94, 0.18);
      animation: pulse 2s infinite;
    }

    @keyframes rise-up {
      from {
        transform: translateY(16px);
        opacity: 0;
      }
      to {
        transform: translateY(0);
        opacity: 1;
      }
    }

    @keyframes field-in {
      from {
        opacity: 0;
        transform: translateY(12px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @keyframes float {
      0%,
      100% { transform: translateY(0); }
      50% { transform: translateY(16px); }
    }

    @keyframes pulse {
      0%, 100% { transform: scale(1); }
      50% { transform: scale(1.15); }
    }

    @media (max-width: 640px) {
      body {
        padding: 14px;
      }

      .hero {
        padding: 24px 18px 18px;
      }

      form {
        padding: 18px 14px 16px;
      }

      .bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }