:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --emerald: #10b981;
  --emerald-light: #34d399;
  --dark: #0f172a;
  --gray: #64748b;
  --light: #f8fafc;
  --white: #ffffff;
  --radius: 14px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Noto Sans SC', sans-serif; background: var(--light); color: var(--dark); line-height: 1.7; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,0.92); backdrop-filter: blur(12px);
  border-bottom: 1px solid #e2e8f0;
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--dark); font-size: 1.15rem; }
.logo-dot { width: 10px; height: 10px; background: linear-gradient(135deg, var(--blue), var(--emerald)); border-radius: 50%; }
.logo strong { background: linear-gradient(135deg, var(--blue), var(--emerald)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }
.nav-links a { text-decoration: none; color: var(--gray); font-size: 0.9rem; transition: color 0.2s; }
.nav-links a:hover { color: var(--blue); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; }
.nav-toggle span { width: 22px; height: 2px; background: var(--dark); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 24px; border-radius: 10px; font-size: 0.95rem; font-weight: 600;
  text-decoration: none; border: none; cursor: pointer; transition: all 0.25s;
}
.btn-accent { background: linear-gradient(135deg, var(--blue), var(--emerald)); color: var(--white); }
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(37,99,235,0.35); }
.btn-lg { padding: 16px 32px; font-size: 1rem; }
.btn-ghost { background: transparent; color: var(--gray); border: 1px solid #e2e8f0; }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }
.btn-full { width: 100%; }

.hero {
  position: relative; padding: 140px 0 100px; overflow: hidden;
  background: var(--dark); color: var(--white);
}
.hero-glow {
  position: absolute; top: -50%; right: -20%; width: 80%; height: 100%;
  background: radial-gradient(circle, rgba(37,99,235,0.25) 0%, transparent 60%);
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 720px; }
.hero-badge {
  display: inline-block; background: rgba(16,185,129,0.15); color: var(--emerald-light);
  padding: 8px 16px; border-radius: 100px; font-size: 0.85rem; font-weight: 600; margin-bottom: 24px;
}
.hero h1 { font-size: clamp(2.4rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.15; margin-bottom: 20px; }
.hero h1 span {
  background: linear-gradient(135deg, var(--blue), var(--emerald));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-desc { font-size: 1.05rem; color: rgba(255,255,255,0.7); margin-bottom: 32px; line-height: 1.8; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 48px; }
.hero-metrics { display: flex; gap: 48px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.1); }
.hero-metrics strong { display: block; font-size: 2rem; font-weight: 800; color: var(--emerald-light); }
.hero-metrics span { font-size: 0.85rem; color: rgba(255,255,255,0.5); }

.section { padding: 80px 0; }
.section-dark { background: var(--dark); color: var(--white); }
.section-header { margin-bottom: 48px; }
.section-header.light h2, .section-header.light p { color: var(--white); }
.section-header.light p { opacity: 0.7; }
.tag { display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--blue); margin-bottom: 8px; }
.section-dark .tag { color: var(--emerald-light); }
.section-header h2 { font-size: 1.75rem; font-weight: 700; margin-bottom: 8px; }
.section-header p { color: var(--gray); }

.phases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.phase {
  background: var(--white); border-radius: var(--radius); padding: 32px;
  border: 2px solid #e2e8f0; transition: all 0.3s;
}
.phase:hover { border-color: var(--blue); transform: translateY(-4px); }
.phase-active { border-color: var(--emerald); background: linear-gradient(to bottom, rgba(16,185,129,0.05), var(--white)); }
.phase-num { font-size: 0.75rem; font-weight: 700; color: var(--blue); letter-spacing: 0.05em; margin-bottom: 8px; }
.phase h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 4px; }
.phase-week { font-size: 0.85rem; color: var(--gray); margin-bottom: 16px; }
.phase ul { list-style: none; }
.phase li { padding: 6px 0; font-size: 0.9rem; color: var(--gray); }
.phase li::before { content: '→'; color: var(--emerald); margin-right: 8px; }

.support-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.support-item {
  padding: 28px; background: rgba(255,255,255,0.05); border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.08);
}
.support-icon { font-size: 1.75rem; display: block; margin-bottom: 12px; }
.support-item h3 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; }
.support-item p { font-size: 0.85rem; opacity: 0.7; }

.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.timeline-item {
  padding: 24px; background: var(--white); border-radius: var(--radius);
  border-left: 4px solid var(--blue);
}
.timeline-item time { font-size: 0.8rem; font-weight: 600; color: var(--blue); }
.timeline-item h4 { font-size: 1rem; font-weight: 600; margin: 8px 0 6px; }
.timeline-item p { font-size: 0.85rem; color: var(--gray); }

.apply-section { background: linear-gradient(135deg, #eff6ff, #ecfdf5); }
.apply-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.apply-info h2 { font-size: 1.75rem; font-weight: 700; margin-bottom: 16px; line-height: 1.3; }
.apply-info > p { color: var(--gray); margin-bottom: 24px; }
.criteria { background: var(--white); border-radius: var(--radius); padding: 24px; }
.criteria h4 { font-size: 0.9rem; font-weight: 600; margin-bottom: 12px; }
.criteria ul { list-style: none; }
.criteria li { padding: 6px 0; font-size: 0.9rem; color: var(--gray); }
.criteria li::before { content: '✓'; color: var(--emerald); margin-right: 8px; font-weight: 700; }

.apply-form { display: flex; flex-direction: column; gap: 14px; }
.apply-form input, .apply-form textarea {
  padding: 14px 16px; border: 1px solid #e2e8f0; border-radius: 10px;
  font-family: inherit; font-size: 0.95rem; background: var(--white); transition: border-color 0.2s;
}
.apply-form input:focus, .apply-form textarea:focus { outline: none; border-color: var(--blue); }

.footer { padding: 32px 0; border-top: 1px solid #e2e8f0; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; }
.footer p { font-size: 0.85rem; color: var(--gray); margin-top: 4px; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--gray); text-decoration: none; font-size: 0.85rem; }
.footer-links a:hover { color: var(--blue); }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .header .nav { position: relative; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute;
    top: 68px; left: 0; right: 0; background: var(--white);
    padding: 20px; gap: 12px; box-shadow: 0 8px 24px rgba(0,0,0,0.08); z-index: 200;
  }
  .phases, .support-grid, .timeline, .apply-grid { grid-template-columns: 1fr; }
  .hero-metrics { gap: 24px; }
  .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
}