:root {
  --bg: #FAF8F5;
  --bg-warm: #F3EDE4;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FDF9F5;
  --text: #1A1612;
  --text-secondary: #6B6156;
  --text-muted: #9C9185;
  --accent: #C4704B;
  --accent-dark: #A85A38;
  --accent-light: #F0DDD2;
  --terracotta: #D4856A;
  --sage: #7A9E7E;
  --slate: #5B6B7A;
  --border: #E8E0D6;
  --border-light: #F0EAE0;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: "DM Sans", "Noto Sans SC", -apple-system, sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.6; overflow-x: hidden;
}
a, button { cursor: pointer; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.text-accent { color: var(--accent); }

/* ===================== NAV ===================== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(250, 248, 245, 0.9); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent; transition: border-color 0.3s;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 24px; height: 64px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-mark {
  width: 32px; height: 32px; border-radius: 8px; background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 700; font-size: 15px;
}
.logo-text { font-size: 16px; font-weight: 600; color: var(--text); letter-spacing: -0.02em; }
.logo-img { width: 32px; height: 32px; border-radius: 8px; object-fit: contain; flex-shrink: 0; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { color: var(--text-secondary); text-decoration: none; font-size: 14px; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav-actions { display: flex; gap: 10px; align-items: center; }
.nav-hamburger { display: none; background: none; border: none; color: var(--text-secondary); padding: 4px; }
.nav-hamburger:hover { color: var(--text); }
.mobile-menu {
  display: none; position: absolute; top: 100%; left: 0; right: 0;
  background: var(--bg); border-bottom: 1px solid var(--border);
  padding: 16px 24px; flex-direction: column; gap: 12px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a { color: var(--text-secondary); text-decoration: none; font-size: 15px; padding: 8px 0; }

/* ===================== BUTTONS ===================== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 20px; border-radius: var(--radius-sm); font-size: 14px; font-weight: 600;
  text-decoration: none; transition: all 0.2s ease; border: none; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg-warm); border-color: var(--text-muted); }
.btn-lg { padding: 12px 28px; font-size: 15px; border-radius: var(--radius-md); }
.btn-xl { padding: 14px 32px; font-size: 16px; border-radius: var(--radius-md); }

/* ===================== HERO ===================== */
.hero {
  position: relative; min-height: 90vh; display: flex; align-items: center; justify-content: center;
  padding: 120px 24px 80px; overflow: hidden;
}
.hero-deco { position: absolute; inset: 0; pointer-events: none; }
.deco-circle {
  position: absolute; border-radius: 50%; opacity: 0.15;
  animation: floatDeco 20s ease-in-out infinite;
}
.deco-circle.c1 { width: 400px; height: 400px; top: -80px; right: -100px; background: var(--accent-light); animation-delay: 0s; }
.deco-circle.c2 { width: 300px; height: 300px; bottom: -60px; left: -80px; background: #E8DDD0; animation-delay: -7s; }
.deco-circle.c3 { width: 200px; height: 200px; top: 30%; left: 60%; background: #D5E5D5; opacity: 0.1; animation-delay: -14s; }
@keyframes floatDeco {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(20px, -15px) scale(1.05); }
  66% { transform: translate(-15px, 10px) scale(0.97); }
}

.hero-content { position: relative; z-index: 2; text-align: center; max-width: 720px; }
.hero-title {
  font-size: clamp(40px, 6vw, 64px); font-weight: 400; line-height: 1.15;
  letter-spacing: -0.02em; margin-bottom: 24px; animation: fadeInUp 0.8s ease-out;
}
.title-serif { font-family: "Source Serif 4", "Noto Sans SC", serif; font-weight: 600; }
.title-accent { font-family: "Source Serif 4", "Noto Sans SC", serif; font-weight: 600; color: var(--accent); }
.hero-desc {
  font-size: 17px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 36px;
  animation: fadeInUp 0.8s ease-out 0.1s both;
}
.hero-actions { display: flex; gap: 14px; justify-content: center; margin-bottom: 56px; animation: fadeInUp 0.8s ease-out 0.2s both; }
.hero-metrics {
  display: flex; align-items: center; justify-content: center; gap: 32px;
  padding: 20px 32px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); animation: fadeInUp 0.8s ease-out 0.3s both;
}
.metric { display: flex; flex-direction: column; align-items: center; }
.metric-value { font-size: 24px; font-weight: 700; color: var(--accent); letter-spacing: -0.02em; }
.metric-label { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.metric-sep { width: 1px; height: 32px; background: var(--border); }

/* ===================== SECTIONS ===================== */
section { position: relative; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-label {
  display: inline-block; font-size: 12px; font-weight: 600; color: var(--accent);
  text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 14px;
}
.section-title {
  font-family: "Source Serif 4", "Noto Sans SC", serif; font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 600; letter-spacing: -0.02em; line-height: 1.25; margin-bottom: 14px;
}
.section-desc { font-size: 16px; color: var(--text-secondary); max-width: 520px; margin: 0 auto; }

/* ===================== FEATURES ===================== */
.features { padding: 80px 0; background: var(--bg-warm); }
.features-groups { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.feature-group {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 28px 32px; transition: all 0.25s ease;
}
.feature-group:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.06); }
.feature-group-header { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.feature-group-icon {
  width: 40px; height: 40px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.feature-group-title {
  font-size: 19px; font-weight: 700; letter-spacing: -0.02em;
  font-family: "Source Serif 4", "Noto Sans SC", serif;
}
.feature-group-items { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.fg-item {
  display: inline-block; padding: 6px 14px; background: var(--bg); border: 1px solid var(--border-light);
  border-radius: 100px; font-size: 13px; font-weight: 500; color: var(--text-secondary);
  transition: all 0.2s ease; cursor: default;
}
.fg-item:hover { background: var(--accent-light); border-color: var(--accent); color: var(--accent-dark); }
.fg-item.hot { background: var(--accent-light); border-color: rgba(196,112,75,0.3); color: var(--accent-dark); }
.fg-item.new { background: #EEF2FF; border-color: rgba(99,102,241,0.3); color: #4338CA; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature-card {
  padding: 28px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); transition: all 0.25s ease;
}
.feature-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.06); }
.feature-hero { grid-column: span 3; display: flex; align-items: center; gap: 24px; padding: 32px 36px; }
.feature-icon-box {
  width: 44px; height: 44px; border-radius: 10px; background: var(--accent-light);
  display: flex; align-items: center; justify-content: center; color: var(--accent); flex-shrink: 0; margin-bottom: 14px;
}
.feature-icon-box.primary { background: var(--accent); color: white; width: 48px; height: 48px; margin-bottom: 0; }
.feature-title { font-size: 17px; font-weight: 600; margin-bottom: 6px; letter-spacing: -0.01em; }
.feature-hero .feature-title { font-size: 22px; }
.feature-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.feature-hero .feature-desc { font-size: 15px; }
.feature-tags { display: flex; gap: 8px; margin-top: 14px; }
.feature-tags span {
  padding: 4px 12px; background: var(--accent-light); border-radius: 100px;
  font-size: 12px; font-weight: 500; color: var(--accent-dark);
}

/* ===================== TOOLS ===================== */
.tools { padding: 80px 0; }
.tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.tool-card {
  padding: 24px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); transition: all 0.25s ease;
}
.tool-card:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(0,0,0,0.05); }
.tool-featured { background: var(--bg-warm); border-color: var(--border); }
.tool-badge {
  display: inline-block; padding: 3px 10px; background: var(--accent-light); border-radius: 4px;
  font-size: 10px; font-weight: 600; color: var(--accent-dark);
  letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 14px;
}
.tool-icon {
  width: 40px; height: 40px; border-radius: 10px; background: var(--bg-warm);
  display: flex; align-items: center; justify-content: center; color: var(--text-secondary);
  margin-bottom: 14px;
}
.tool-icon.primary { background: var(--accent); color: white; }
.tool-name { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.tool-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 12px; }
.tool-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tool-tags span { padding: 3px 10px; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; font-size: 11px; color: var(--text-muted); }

/* ===================== SCENARIOS ===================== */
.scenarios { padding: 80px 0; background: var(--bg-warm); }
.scenarios-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.scenario-card {
  padding: 28px 24px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); transition: all 0.25s ease;
}
.scenario-card:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(0,0,0,0.05); }
.scenario-num {
  font-family: "Source Serif 4", serif; font-size: 40px; font-weight: 600;
  color: var(--accent-light); line-height: 1; margin-bottom: 14px;
}
.scenario-title { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.scenario-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }

/* ===================== REVIEWS ===================== */
.reviews { padding: 80px 0; }
.reviews-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.review-card {
  padding: 24px; background: var(--bg-warm);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  transition: transform 0.25s ease;
}
.review-card:hover { transform: translateY(-3px); }
.review-text { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; font-style: italic; }
.review-author { display: flex; flex-direction: column; gap: 2px; }
.review-name { font-size: 14px; font-weight: 600; color: var(--text); }
.review-role { font-size: 12px; color: var(--text-muted); }

/* ===================== STATS ===================== */
.stats { padding: 80px 0; background: var(--text); color: white; }
.stats-inner {
  display: flex; align-items: center; justify-content: center; gap: 48px; padding: 24px 0;
}
.stat-item { display: flex; flex-direction: column; align-items: center; }
.stat-number { display: inline-flex; align-items: baseline; }
.stat-value { font-size: 40px; font-weight: 700; letter-spacing: -0.03em; color: var(--terracotta); }
.stat-suffix { font-size: 24px; font-weight: 700; color: var(--terracotta); margin-left: 2px; }
.stat-label { font-size: 13px; color: rgba(255,255,255,0.5); margin-top: 4px; }
.stat-divider { width: 1px; height: 50px; background: rgba(255,255,255,0.1); }

/* ===================== CTA ===================== */
.cta { padding: 100px 0; text-align: center; background: var(--bg-warm); }
.cta-title {
  font-family: "Source Serif 4", "Noto Sans SC", serif; font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 600; letter-spacing: -0.02em; line-height: 1.25; margin-bottom: 16px;
}
.cta-desc { font-size: 16px; color: var(--text-secondary); margin-bottom: 32px; }
.cta-coupon {
  display: inline-flex; align-items: center; gap: 12px; flex-wrap: wrap; justify-content: center;
  padding: 14px 24px; background: var(--bg-card); border: 2px dashed var(--accent);
  border-radius: var(--radius-md); margin-bottom: 28px;
}
.coupon-label { font-size: 13px; color: var(--text-secondary); font-weight: 500; }
.coupon-code {
  font-size: 20px; font-weight: 700; color: var(--accent); letter-spacing: 0.08em;
  font-family: "DM Sans", monospace; padding: 2px 16px; background: var(--accent-light); border-radius: 6px;
}
.coupon-copy {
  padding: 6px 16px; background: var(--accent); color: #fff; border: none; border-radius: 6px;
  font-size: 13px; font-weight: 600; cursor: pointer; transition: all 0.2s;
}
.coupon-copy:hover { background: var(--accent-dark); }
.coupon-tip { font-size: 12px; color: var(--text-muted); width: 100%; margin-top: 4px; text-align: center; }
.cta-actions { margin-bottom: 16px; }
.cta-note { font-size: 13px; color: var(--text-muted); }

/* ===================== FOOTER ===================== */
.footer { padding: 56px 0 32px; border-top: 1px solid var(--border); }
.footer-top { display: flex; justify-content: space-between; gap: 64px; margin-bottom: 40px; }
.footer-brand { max-width: 280px; }
.footer-desc { font-size: 13px; color: var(--text-muted); margin-top: 12px; line-height: 1.7; }
.footer-links { display: flex; gap: 56px; }
.footer-col h4 { font-size: 12px; font-weight: 600; color: var(--text); margin-bottom: 14px; text-transform: uppercase; letter-spacing: 0.08em; }
.footer-col a { display: block; font-size: 13px; color: var(--text-muted); text-decoration: none; padding: 3px 0; transition: color 0.2s; }
.footer-col a:hover { color: var(--text-secondary); }
.footer-bottom { padding-top: 20px; border-top: 1px solid var(--border); font-size: 12px; color: var(--text-muted); }

/* ===================== ANIMATIONS ===================== */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 1024px) {
  .features-groups { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-hero { grid-column: span 2; }
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: block; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-hero { grid-column: span 1; flex-direction: column; align-items: flex-start; }
  .feature-hero .feature-icon-box { margin-bottom: 14px; }
  .tools-grid { grid-template-columns: 1fr; }
  .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-inner { flex-direction: column; gap: 20px; }
  .stat-divider { width: 50px; height: 1px; }
  .hero-metrics { flex-direction: column; gap: 16px; }
  .metric-sep { width: 40px; height: 1px; }
  .footer-top { flex-direction: column; gap: 32px; }
  .footer-links { gap: 28px; flex-wrap: wrap; }
  .hero-actions { flex-direction: column; align-items: center; }
  .nav-actions .btn-secondary { display: none; }
  .review-card { width: auto; }
  .reviews-grid { grid-template-columns: 1fr; }
  .scenarios-grid { grid-template-columns: 1fr; }
}