:root {
  --bg: #FAFAF7;
  --fg: #1A1A18;
  --muted: #7A7A72;
  --accent: #3D6B4F;
  --accent-light: #EAF2EC;
  --border: #E2E2DC;
  --card-bg: #FFFFFF;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Navigation */
.nav {
  padding: 20px 48px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
}

.nav-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--fg);
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 100px 48px 80px;
  min-height: 72vh;
  border-bottom: 1px solid var(--border);
}

.hero-eyebrow {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.hero-headline {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 17px;
  color: var(--muted);
  max-width: 440px;
  line-height: 1.65;
  font-weight: 300;
}

/* Hero visual — illustrated living room card */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.room-card {
  width: 320px;
  height: 260px;
  background: linear-gradient(160deg, #F4F9F4 0%, #EDF5F0 100%);
  border-radius: 20px;
  border: 1.5px solid var(--border);
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(61, 107, 79, 0.12), 0 4px 16px rgba(0,0,0,0.06);
}

.room-window {
  position: absolute;
  top: 32px;
  left: 32px;
  width: 100px;
  height: 80px;
  border: 2px solid #C8DED0;
  border-radius: 6px;
  background: linear-gradient(180deg, #D4EAF5 0%, #E8F4F0 100%);
}

.room-window::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #C8DED0;
  transform: translateX(-50%);
}

.room-window::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: #C8DED0;
  transform: translateY(-50%);
}

.plant-pot {
  position: absolute;
  bottom: 70px;
  right: 40px;
  width: 36px;
  height: 30px;
  background: #C4784A;
  border-radius: 4px 4px 8px 8px;
}

.plant-leaves {
  position: absolute;
  bottom: 95px;
  right: 44px;
  width: 28px;
  height: 40px;
  background: #4A8C5E;
  border-radius: 50% 50% 50% 20%;
}

.sofa-base {
  position: absolute;
  bottom: 30px;
  left: 28px;
  width: 180px;
  height: 50px;
  background: #C4B49A;
  border-radius: 10px 10px 6px 6px;
}

.sofa-cushion {
  position: absolute;
  bottom: 70px;
  left: 36px;
  width: 160px;
  height: 32px;
  background: #D4C9B4;
  border-radius: 8px 8px 4px 4px;
}

.room-floor {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 30px;
  background: #DEDAD0;
}

.sparkles { position: relative; }
.sp {
  position: absolute;
  font-size: 18px;
  color: var(--accent);
  opacity: 0.7;
  animation: sparkle 2.5s ease-in-out infinite;
}
.sp1 { top: 20px; left: 200px; animation-delay: 0s; }
.sp2 { top: 60px; right: 30px; animation-delay: 0.6s; }
.sp3 { bottom: 90px; left: 140px; animation-delay: 1.1s; }
.sp4 { top: 40px; right: 80px; animation-delay: 1.7s; font-size: 12px; }

@keyframes sparkle {
  0%, 100% { opacity: 0.3; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.2); }
}

/* Sections */
.difference, .how, .guarantee, .closing {
  padding: 80px 48px;
  border-bottom: 1px solid var(--border);
}

.diff-inner, .how-inner {
  max-width: 960px;
  margin: 0 auto;
}

.section-eyebrow {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(28px, 3.5vw, 44px);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 20px;
  max-width: 560px;
}

.section-sub {
  font-size: 17px;
  color: var(--muted);
  max-width: 540px;
  line-height: 1.65;
  font-weight: 300;
  margin-bottom: 56px;
}

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

.diff-card {
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: 16px;
  padding: 28px 28px 32px;
}

.diff-icon {
  width: 44px;
  height: 44px;
  background: var(--accent-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.diff-card h3 {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 8px;
}

.diff-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

/* Steps */
.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 24px;
  align-items: start;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
}

.step:last-child { border-bottom: none; }

.step-num {
  font-family: 'DM Serif Display', serif;
  font-size: 32px;
  color: var(--accent);
  opacity: 0.35;
  line-height: 1;
  padding-top: 2px;
}

.step-content h3 {
  font-size: 17px;
  font-weight: 500;
  margin-bottom: 6px;
}

.step-content p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.6;
}

/* Guarantee */
.guarantee {
  background: var(--accent-light);
}

.guarantee-inner {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
}

.guarantee-badge {
  margin-bottom: 24px;
  display: inline-block;
}

.guarantee-title {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(28px, 3vw, 40px);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.guarantee-text {
  font-size: 17px;
  color: var(--muted);
  line-height: 1.65;
}

/* Closing */
.closing { text-align: center; }
.closing-inner { max-width: 640px; margin: 0 auto; }
.closing-headline {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(32px, 4vw, 56px);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
}
.closing-sub {
  font-size: 18px;
  color: var(--muted);
  font-weight: 300;
}

/* Footer */
.footer {
  padding: 48px;
  text-align: center;
}
.footer-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 22px;
  display: block;
  margin-bottom: 8px;
}
.footer-tagline {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 4px;
}
.footer-note {
  font-size: 13px;
  color: var(--muted);
  opacity: 0.6;
}

/* Responsive */
@media (max-width: 768px) {
  .nav { padding: 16px 24px; }
  .hero { grid-template-columns: 1fr; gap: 40px; padding: 60px 24px 48px; min-height: auto; }
  .hero-visual { order: -1; }
  .room-card { width: 240px; height: 200px; }
  .diff-grid { grid-template-columns: 1fr; gap: 16px; }
  .difference, .how, .guarantee, .closing { padding: 56px 24px; }
  .footer { padding: 40px 24px; }
}