:root {
  --navy: #0f1f3d;
  --navy-light: #1b3460;
  --accent: #e63946;
  --bg-alt: #f5f7fb;
  --text: #1c1c1c;
  --text-muted: #5a6373;
  --border: #e6e9ef;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: #fff;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--navy);
}

.nav {
  display: flex;
  gap: 28px;
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--navy);
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: #fff;
  padding: 80px 0;
}

.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
}

.hero-text { flex: 1; min-width: 320px; }

.eyebrow {
  color: var(--accent);
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.lead {
  font-size: 1.05rem;
  color: #cbd4e6;
  margin-bottom: 32px;
}

.hero-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-image {
  flex: 0 0 auto;
  display: flex;
  justify-content: center;
}

.hero-image img {
  width: 260px;
  border-radius: 8px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: #d12d3a;
}

.btn-secondary {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.35);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.18);
}

/* Sections */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-title {
  font-size: 1.9rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: 12px;
  color: var(--navy);
}

.section-sub {
  text-align: center;
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 48px;
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px 24px;
  text-align: center;
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--navy);
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* Step grid */
.step-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.step-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
}

.step-card-highlight {
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(230,57,70,0.08);
}

.step-label {
  display: inline-block;
  background: var(--navy);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 12px;
}

.step-card-highlight .step-label {
  background: var(--accent);
}

.step-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--navy);
}

.step-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* Recommendation box */
.reco-box {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
}

.reco-box > strong {
  display: block;
  text-align: center;
  font-size: 1.05rem;
  color: var(--navy);
  margin-bottom: 20px;
}

.reco-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.reco-item {
  text-align: center;
}

.reco-tag {
  display: inline-block;
  background: var(--bg-alt);
  color: var(--navy);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 6px 12px;
  border-radius: 6px;
  margin-bottom: 8px;
}

.reco-item p {
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* Plan grid */
.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.plan-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
}

.plan-card-highlight {
  border-color: var(--navy);
  box-shadow: 0 4px 20px rgba(15,31,61,0.08);
}

.plan-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--navy);
  display: flex;
  align-items: center;
  gap: 8px;
}

.plan-tag {
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--bg-alt);
  color: var(--text-muted);
  padding: 3px 10px;
  border-radius: 999px;
}

.plan-card ul {
  list-style: none;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.plan-card li {
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}

.plan-card li:last-child {
  border-bottom: none;
}

.plan-note {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.92rem;
  font-style: italic;
}

/* Daily section */
.daily-wrap {
  display: flex;
  gap: 48px;
  align-items: flex-start;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

/* Phone mockup */
.phone-mock {
  flex: 0 0 340px;
  background: #fff;
  border-radius: 20px;
  border: 1px solid var(--border);
  box-shadow: 0 16px 40px rgba(15,31,61,0.08);
  overflow: hidden;
}

.phone-mock-header {
  background: var(--navy);
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
}

.phone-mock-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #4caf50;
  display: inline-block;
}

.phone-mock-title {
  font-weight: 700;
  font-size: 0.95rem;
  flex: 1;
}

.phone-mock-time {
  font-size: 0.8rem;
  color: #aab4cc;
}

.phone-mock-body {
  padding: 20px;
}

.phone-mock-body hr {
  border: none;
  border-top: 1px dashed var(--border);
  margin: 14px 0;
}

.msg-label {
  font-weight: 700;
  color: var(--navy);
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.msg-title {
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.msg-text {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.7;
}

.msg-link {
  color: var(--accent);
  font-weight: 600;
}

/* Daily steps */
.daily-steps {
  flex: 1;
  min-width: 320px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.daily-step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.daily-step-num {
  flex: 0 0 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
}

.daily-step h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 4px;
}

.daily-step p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.daily-step a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

@media (max-width: 768px) {
  .daily-wrap { flex-direction: column; }
  .phone-mock { flex: none; width: 100%; max-width: 360px; margin: 0 auto; }
}

/* Contact */
.contact {
  text-align: center;
}

.contact .section-sub {
  margin-bottom: 32px;
}

/* Footer */
.footer {
  background: var(--navy);
  color: #aab4cc;
  text-align: center;
  padding: 28px 0;
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav { display: none; }
  .hero { padding: 56px 0; }
  .hero h1 { font-size: 2rem; }
  .feature-grid, .step-grid, .reco-grid, .plan-grid {
    grid-template-columns: 1fr;
  }
  .daily-box { padding: 24px; }
}