@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.8/dist/web/static/pretendard.css");

:root {
    --primary: #0a192f;
    --primary-light: #172a45;
    --accent: #ff6b00; /* Industrial Orange */
    --accent-hover: #e65c00;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --bg-main: #ffffff;
    --bg-alt: #f1f5f9;
    --border: #cbd5e1;
    --shadow-sm: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --font-main: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-main); color: var(--text-main); background: var(--bg-main); line-height: 1.6; word-break: keep-all; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }

.si-container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Header */
.si-header { position: sticky; top: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(8px); z-index: 100; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-sm); }
.header-inner { display: flex; justify-content: space-between; align-items: center; height: 80px; }
.logo { display: flex; align-items: center; gap: 12px; font-weight: 900; font-size: 1.25rem; color: var(--primary); letter-spacing: -0.02em; }
.main-nav ul { list-style: none; display: flex; gap: 32px; }
.main-nav a { font-weight: 700; font-size: 1rem; color: var(--text-main); transition: color 0.3s; }
.main-nav a:hover { color: var(--accent); }

/* Hero */
.si-hero { position: relative; background: url('https://images.unsplash.com/photo-1580983538356-cc556a310111?auto=format&fit=crop&q=80&w=1920') no-repeat center center/cover; color: white; padding: 150px 0; text-align: center; }
.hero-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(135deg, rgba(10, 25, 47, 0.95) 0%, rgba(23, 42, 69, 0.8) 100%); z-index: 1; }
.hero-content { position: relative; z-index: 2; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 20px; background: rgba(255, 107, 0, 0.15); border: 1px solid var(--accent); color: var(--accent); border-radius: 4px; font-weight: 800; font-size: 0.95rem; margin-bottom: 24px; text-transform: uppercase; letter-spacing: 0.05em; }
.hero-title { font-size: clamp(2.8rem, 5vw, 5rem); font-weight: 900; line-height: 1.2; letter-spacing: -0.04em; margin-bottom: 24px; }
.hero-title .highlight { color: var(--accent); border-bottom: 4px solid var(--accent); }
.hero-subtitle { font-size: clamp(1.1rem, 2vw, 1.3rem); color: #cbd5e1; margin-bottom: 48px; font-weight: 400; }
.btn-primary { display: inline-flex; align-items: center; gap: 12px; background: var(--accent); color: white; padding: 20px 48px; border-radius: 4px; font-weight: 800; font-size: 1.15rem; transition: all 0.3s ease; box-shadow: 0 4px 15px rgba(255, 107, 0, 0.4); }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-3px); box-shadow: 0 8px 25px rgba(255, 107, 0, 0.5); }

/* Challenge */
.si-challenge { padding: 120px 0; background: var(--bg-main); }
.challenge-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.ch-image img { border-radius: 8px; box-shadow: var(--shadow-lg); }
.ch-text h2 { font-size: 2.8rem; font-weight: 900; color: var(--primary); margin-bottom: 24px; line-height: 1.2; letter-spacing: -0.03em; }
.ch-text p { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 32px; }
.ch-bullets { list-style: none; }
.ch-bullets li { display: flex; align-items: center; gap: 12px; font-size: 1.1rem; font-weight: 600; margin-bottom: 16px; color: var(--primary); }
.ch-bullets i { color: var(--accent); font-size: 1.2rem; }

/* Features */
.si-features { padding: 120px 0; background: var(--bg-alt); }
.section-heading { text-align: center; margin-bottom: 60px; }
.section-heading h2 { font-size: 2.5rem; font-weight: 900; color: var(--primary); margin-bottom: 16px; }
.section-heading p { font-size: 1.15rem; color: var(--text-muted); }
.features-asym { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.feat-content-box { display: flex; flex-direction: column; gap: 40px; }
.feat-item { display: flex; gap: 24px; }
.feat-icon { width: 70px; height: 70px; background: white; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 2rem; color: var(--accent); box-shadow: var(--shadow-sm); flex-shrink: 0; }
.feat-item h3 { font-size: 1.3rem; font-weight: 800; color: var(--primary); margin-bottom: 10px; }
.feat-item p { color: var(--text-muted); line-height: 1.6; }
.feat-img-box { position: relative; }
.feat-img-box img { border-radius: 8px; box-shadow: var(--shadow-lg); position: relative; z-index: 2; border-left: 8px solid var(--accent); }

/* Stats */
.si-stats { padding: 80px 0; background: var(--primary); color: white; }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); text-align: center; gap: 40px; }
.stat-num { display: block; font-size: 4rem; font-weight: 900; color: var(--accent); line-height: 1; margin-bottom: 12px; }
.stat-desc { font-weight: 700; font-size: 1.1rem; letter-spacing: 0.05em; opacity: 0.9; }

/* Lead Form */
.si-lead-form { padding: 120px 0; background: var(--bg-main); }
.form-wrapper { max-width: 800px; }
.form-header { text-align: center; margin-bottom: 40px; }
.form-header h2 { font-size: 2.8rem; font-weight: 900; color: var(--primary); margin-bottom: 16px; }
.form-header p { font-size: 1.1rem; color: var(--text-muted); }
.form-container { background: white; padding: 50px; border-radius: 12px; box-shadow: var(--shadow-lg); border: 1px solid var(--border); }
.input-row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.input-group { margin-bottom: 24px; }
.input-group label { display: block; font-weight: 700; margin-bottom: 8px; color: var(--primary); }
.input-group input { width: 100%; padding: 16px; border: 2px solid var(--border); border-radius: 6px; font-size: 1rem; font-family: var(--font-main); transition: all 0.3s; background: var(--bg-alt); }
.input-group input:focus { outline: none; border-color: var(--accent); background: white; }
.checkbox-group { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 32px; font-size: 0.95rem; color: var(--text-muted); }
.checkbox-group input { margin-top: 4px; }
.checkbox-group a { color: var(--primary); text-decoration: underline; font-weight: 700; }
.btn-submit { width: 100%; padding: 20px; background: var(--primary); color: white; border: none; border-radius: 6px; font-size: 1.2rem; font-weight: 800; cursor: pointer; display: flex; justify-content: center; align-items: center; gap: 12px; transition: background 0.3s; }
.btn-submit:hover { background: var(--primary-light); }
.btn-submit:disabled { opacity: 0.7; cursor: not-allowed; }

/* Success Message */
.success-message { text-align: center; padding: 40px 20px; }
.success-message i { font-size: 4.5rem; color: var(--accent); margin-bottom: 24px; }
.success-message h3 { font-size: 1.8rem; font-weight: 800; color: var(--primary); margin-bottom: 16px; }

/* FAQ */
.si-faq { padding: 100px 0; background: var(--bg-alt); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
details { background: white; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
summary { padding: 24px; font-weight: 800; font-size: 1.1rem; color: var(--primary); cursor: pointer; list-style: none; position: relative; display: flex; justify-content: space-between; align-items: center; }
summary::-webkit-details-marker { display: none; }
summary::after { content: '\f067'; font-family: "Font Awesome 6 Free"; font-weight: 900; color: var(--accent); transition: transform 0.3s; }
details[open] summary::after { content: '\f068'; transform: rotate(180deg); }
.details-content { padding: 0 24px 24px; color: var(--text-muted); line-height: 1.7; font-size: 1.05rem; border-top: 1px solid var(--bg-alt); margin-top: -10px; padding-top: 20px; }

/* Footer */
.si-footer { background: var(--primary); color: #94a3b8; padding: 80px 0 40px; font-size: 0.95rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 60px; margin-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 40px; }
.footer-info h3 { color: white; font-size: 1.4rem; font-weight: 800; margin-bottom: 20px; }
.footer-info p { margin-bottom: 10px; }
.footer-links { display: flex; flex-direction: column; gap: 16px; }
.footer-links a { font-weight: 600; transition: color 0.3s; }
.footer-links a:hover { color: white; }
.highlight-link { color: var(--accent); }
.footer-bottom { text-align: center; }

/* Legal Pages General */
.legal-page { background: var(--bg-alt); padding: 80px 0; }
.legal-card { background: white; padding: 60px; border-radius: 12px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); }
.legal-card h1 { font-size: 2.2rem; font-weight: 900; color: var(--primary); margin-bottom: 40px; border-bottom: 3px solid var(--primary); padding-bottom: 20px; }
.legal-card h2 { font-size: 1.3rem; font-weight: 800; margin: 32px 0 16px; color: var(--primary); }
.legal-card p { margin-bottom: 16px; color: var(--text-muted); font-size: 1.05rem; }
.legal-card ul { margin-left: 24px; margin-bottom: 16px; color: var(--text-muted); font-size: 1.05rem; }
.map-container { width: 100%; height: 450px; border-radius: 8px; overflow: hidden; margin-top: 40px; border: 1px solid var(--border); }

/* Cookie Banner */
.cookie-banner { position: fixed; bottom: -100%; left: 0; width: 100%; background: var(--primary); color: white; padding: 24px; z-index: 9999; transition: bottom 0.5s ease-in-out; border-top: 4px solid var(--accent); }
.cookie-banner.show { bottom: 0; }
.cookie-content { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.cookie-content p { font-size: 0.95rem; line-height: 1.5; }
.cookie-btns { display: flex; gap: 12px; flex-shrink: 0; }
.cookie-btns button { padding: 12px 24px; border: none; border-radius: 4px; font-weight: 800; cursor: pointer; transition: background 0.3s; }
.btn-cookie-accept { background: var(--accent); color: white; }
.btn-cookie-accept:hover { background: var(--accent-hover); }
.btn-cookie-decline { background: transparent; color: white; border: 1px solid rgba(255,255,255,0.3) !important; }
.btn-cookie-decline:hover { background: rgba(255,255,255,0.1); }

/* Mobile Responsive */
@media (max-width: 768px) {
    .main-nav { display: none; }
    .hero-title { font-size: 2.5rem; }
    .challenge-grid, .features-asym, .footer-grid, .stats-grid { grid-template-columns: 1fr; gap: 40px; }
    .features-asym { display: flex; flex-direction: column-reverse; }
    .input-row { grid-template-columns: 1fr; }
    .form-container { padding: 30px 20px; }
    .cookie-content { flex-direction: column; text-align: center; }
    .legal-card { padding: 30px 20px; }
}