:root {
  --yellow: #F2B705;
  --green: #1D6F73;
  --charcoal: #11141A;
  --slate: #2C3E46;
  --ivory: #F4EDD9;
  --white: #FFFFFF;
  --gray: #9CA3AF;
  --gray-dark: #4B5563;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background-color: var(--charcoal);
  color: var(--ivory);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

a { color: var(--yellow); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--ivory); }

img { max-width: 100%; height: auto; }

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

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(17, 20, 26, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo { display: flex; align-items: center; gap: 10px; }
.logo img { height: 36px; width: auto; }
.logo span {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
}

nav { display: flex; gap: 32px; align-items: center; }
nav a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  white-space: nowrap;
}
nav a:hover, nav a.active { color: var(--yellow); border-bottom-color: var(--yellow); }

.menu-toggle { display: none; }
.menu-btn { display: none; cursor: pointer; flex-direction: column; gap: 5px; padding: 8px; z-index: 101; }
.menu-btn span {
  display: block; width: 24px; height: 2px;
  background: var(--ivory); border-radius: 2px;
  transition: all 0.3s;
}

main { flex: 1; margin-top: 72px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  line-height: 1.2;
}
.btn-primary {
  background: var(--yellow);
  color: var(--charcoal);
}
.btn-primary:hover {
  background: #e0a800;
  color: var(--charcoal);
}
.btn-secondary {
  background: transparent;
  color: var(--yellow);
  border: 2px solid var(--yellow);
}
.btn-secondary:hover {
  background: var(--yellow);
  color: var(--charcoal);
}

footer {
  background: rgba(0, 0, 0, 0.3);
  border-top: 1px solid var(--border);
  padding: 40px 0;
  margin-top: 80px;
}
footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
footer .footer-info { color: var(--gray); font-size: 0.85rem; line-height: 1.7; }
footer .footer-social { display: flex; gap: 12px; }
footer .footer-social a {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--slate);
  color: var(--gray);
  font-size: 1.1rem;
  transition: all 0.2s;
}
footer .footer-social a:hover {
  background: var(--yellow);
  color: var(--charcoal);
}

.page-section { padding: 80px 0; }

.page-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}
.page-subtitle {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: var(--gray);
  max-width: 640px;
  margin-bottom: 48px;
}

.hero {
  min-height: calc(100vh - 72px);
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--charcoal) 0%, var(--slate) 100%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 80%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(29, 111, 115, 0.15) 0%, transparent 70%);
  pointer-events: none;
}
.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-content h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--white);
  letter-spacing: -0.04em;
  margin-bottom: 24px;
}
.hero-content h1 span { color: var(--yellow); }
.hero-content p {
  font-size: clamp(0.95rem, 2vw, 1.2rem);
  color: var(--gray);
  margin-bottom: 36px;
  max-width: 500px;
}
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-visual .hero-logo {
  width: clamp(180px, 30vw, 280px);
  height: clamp(180px, 30vw, 280px);
  border-radius: 24px;
  background: linear-gradient(135deg, var(--green), var(--slate));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 80px rgba(29, 111, 115, 0.2);
}
.hero-visual .hero-logo img { width: 70%; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  background: rgba(44, 62, 70, 0.4);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  transition: transform 0.2s, border-color 0.2s;
}
.feature-card:hover { transform: translateY(-4px); border-color: var(--green); }
.feature-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: rgba(29, 111, 115, 0.2);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
  color: var(--yellow);
}
.feature-card h3 { font-size: 1.15rem; color: var(--white); margin-bottom: 8px; }
.feature-card p { font-size: 0.9rem; color: var(--gray); }

.company-box {
  margin-top: 48px;
  background: linear-gradient(135deg, rgba(44, 62, 70, 0.6), rgba(29, 111, 115, 0.15));
  border: 1px solid rgba(29, 111, 115, 0.3);
  border-radius: 16px;
  padding: 40px;
}
.company-content h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray);
  margin-bottom: 8px;
}
.company-content p strong {
  font-size: 1.2rem;
  color: var(--white);
}
.company-detail {
  display: flex; align-items: center; gap: 12px;
  color: var(--gray); margin-top: 12px; font-size: 0.95rem;
}
.company-detail .icon { color: var(--yellow); font-size: 1.1rem; flex-shrink: 0; }

.contact-types {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

.contact-type-card {
  background: rgba(44, 62, 70, 0.4);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px 16px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
  color: var(--gray);
  font-family: inherit;
  min-height: 100%;
}
.contact-type-card:hover {
  border-color: var(--green);
  transform: translateY(-4px);
}
.contact-type-card.active {
  border-color: var(--yellow);
  background: rgba(242, 183, 5, 0.08);
}
.contact-type-card.active h3 { color: var(--yellow); }
.ctc-icon { font-size: 2rem; margin-bottom: 12px; }
.contact-type-card h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 4px;
}
.contact-type-card p {
  font-size: 0.78rem;
  color: var(--gray);
  line-height: 1.4;
}

.contact-form-wrapper { max-width: 760px; }

form { max-width: 100%; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.form-group { margin-bottom: 24px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.form-group small {
  display: block;
  font-size: 0.75rem;
  color: var(--gray-dark);
  margin-top: 6px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: rgba(44, 62, 70, 0.5);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--white);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s, background 0.2s;
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--green);
  background: rgba(44, 62, 70, 0.7);
}
.form-group textarea { min-height: 140px; resize: vertical; }

#urls { min-height: 80px; }

.file-upload { position: relative; }
.file-upload input[type="file"] {
  position: absolute;
  width: 0; height: 0; opacity: 0;
  overflow: hidden;
}
.file-upload-label {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 20px;
  background: rgba(44, 62, 70, 0.5);
  border: 1px dashed var(--border);
  border-radius: 10px;
  cursor: pointer;
  color: var(--gray);
  transition: all 0.2s;
  font-size: 0.9rem;
}
.file-upload-label:hover {
  border-color: var(--green);
  color: var(--ivory);
}
.file-upload-icon { font-size: 1.3rem; color: var(--yellow); }

.alert {
  padding: 16px 20px;
  border-radius: 10px;
  margin-bottom: 24px;
  font-weight: 500;
  display: none;
}
.alert-success { background: rgba(29, 111, 115, 0.2); border: 1px solid var(--green); color: var(--green); }
.alert-error { background: rgba(220, 38, 38, 0.15); border: 1px solid #DC2626; color: #FCA5A5; }

.contact-info { margin-top: 64px; padding-top: 48px; border-top: 1px solid var(--border); }
.contact-info h3 { font-size: 1.25rem; color: var(--white); margin-bottom: 16px; }
.contact-detail {
  display: flex; align-items: center; gap: 12px;
  color: var(--gray); margin-bottom: 12px; font-size: 0.95rem;
}
.contact-detail .icon { color: var(--yellow); font-size: 1.1rem; flex-shrink: 0; }

.broadcast-stub {
  display: flex; align-items: center; justify-content: center;
  min-height: calc(100vh - 72px);
  flex-direction: column;
  text-align: center;
  padding: 40px 24px;
}
.broadcast-stub .icon { font-size: clamp(3rem, 8vw, 5rem); margin-bottom: 24px; color: var(--yellow); }
.broadcast-stub h2 { font-size: clamp(1.25rem, 3vw, 1.75rem); color: var(--white); margin-bottom: 12px; }
.broadcast-stub p { color: var(--gray); max-width: 400px; }

@media (max-width: 1024px) {
  .hero .container { gap: 40px; }
  .features-grid { gap: 24px; }
  .feature-card { padding: 24px; }
  .contact-types { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  header .container { height: 64px; }

  .logo img { height: 30px; }
  .logo span { font-size: 1rem; }

  .menu-btn { display: flex; }

  nav {
    display: none;
    position: absolute; top: 64px; left: 0; right: 0;
    background: rgba(17, 20, 26, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 8px 24px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
  }
  nav a {
    padding: 14px 0;
    font-size: 1rem;
    width: 100%;
    border-bottom: 1px solid var(--border);
  }
  nav a:last-child { border-bottom: none; }

  .menu-toggle:checked ~ nav { display: flex; }
  .menu-toggle:checked ~ .menu-btn span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .menu-toggle:checked ~ .menu-btn span:nth-child(2) { opacity: 0; }
  .menu-toggle:checked ~ .menu-btn span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 32px;
    padding-top: 32px;
    padding-bottom: 32px;
  }
  .hero-content h1 { margin-bottom: 16px; }
  .hero-content p { max-width: 100%; margin-bottom: 24px; }
  .hero-visual { order: -1; }
  .hero-visual .hero-logo { width: 160px; height: 160px; border-radius: 20px; }
  .hero-visual .hero-logo img { width: 64%; }

  .page-section { padding: 56px 0; }

  .features-grid { grid-template-columns: 1fr; gap: 20px; }
  .feature-card { padding: 24px; }

  .company-box { padding: 24px; margin-top: 32px; }
  .company-detail { font-size: 0.85rem; }

  .contact-types { grid-template-columns: 1fr 1fr; gap: 10px; }
  .contact-type-card { padding: 16px 12px; border-radius: 12px; }
  .contact-type-card .ctc-icon { font-size: 1.5rem; margin-bottom: 8px; }
  .contact-type-card h3 { font-size: 0.82rem; }
  .contact-type-card p { font-size: 0.72rem; }

  .form-row { grid-template-columns: 1fr; gap: 0; }

  .contact-form-wrapper { max-width: 100%; }
  .contact-info { margin-top: 40px; padding-top: 32px; }

  .btn { padding: 14px 24px; width: 100%; }

  footer { margin-top: 48px; padding: 32px 0; }
  footer .container { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }

  header .container { height: 60px; padding: 0 16px; }
  nav { top: 60px; padding: 4px 16px 20px; }
  nav a { padding: 12px 0; font-size: 0.95rem; }

  .hero { min-height: calc(100vh - 60px); }
  .hero-content .btn-row { flex-direction: column; gap: 12px; }
  .hero-content .btn-row .btn { width: 100%; }

  .hero-visual .hero-logo { width: 140px; height: 140px; }

  .page-title { font-size: 1.6rem; }

  .feature-icon { width: 48px; height: 48px; border-radius: 12px; font-size: 1.3rem; }
  .feature-card h3 { font-size: 1.05rem; }
  .feature-card p { font-size: 0.85rem; }

  .company-box { padding: 20px; border-radius: 12px; }

  .contact-types { gap: 8px; margin-bottom: 32px; }
  .contact-type-card { padding: 14px; border-radius: 12px; gap: 10px; }

  .form-group { margin-bottom: 18px; }
  .form-group input,
  .form-group textarea { padding: 12px 14px; font-size: 0.95rem; border-radius: 8px; }
  .form-group textarea { min-height: 120px; }
  .form-group label { font-size: 0.78rem; }

  .file-upload-label { padding: 14px 16px; font-size: 0.85rem; }

  .alert { padding: 14px 16px; }

  footer .footer-social { gap: 10px; }
  footer .footer-social a { width: 36px; height: 36px; font-size: 1rem; }
}