/* ===== Reset & Base ===== */
:root {
  --color-primary: #c25b6d;
  --color-primary-dark: #a83a4d;
  --color-accent: #b04a5c;
  --color-bg-cream: #faf4ee;
  --color-bg-cream-2: #f5ebe1;
  --color-bg-dark: #3a3550;
  --color-bg-dark-2: #4a3a55;
  --color-text: #3a3a3a;
  --color-text-light: #777;
  --font-serif: 'Noto Serif JP', 'YuMincho', '游明朝', serif;
  --font-sans: 'Noto Sans JP', 'YuGothic', '游ゴシック', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  line-height: 1.7;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

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

a { text-decoration: none; color: inherit; }

ul { list-style: none; }

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 12px 28px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 1px 8px rgba(0,0,0,0.05);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #3a3a3a;
}
.logo-mark {
  color: var(--color-primary);
  font-size: 22px;
  line-height: 1;
}
.logo-text {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 400;
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  letter-spacing: 0.04em;
}
.logo-text small {
  font-size: 9px;
  letter-spacing: 0.18em;
  margin-top: 4px;
  opacity: 0.85;
  font-weight: 300;
}
.btn-header {
  background: var(--color-primary);
  color: #fff;
  padding: 9px 22px;
  border-radius: 30px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: opacity 0.2s, transform 0.2s;
}
.btn-header:hover { opacity: 0.88; transform: translateY(-1px); }

/* ===== Hero ===== */
.hero {
  position: relative;
  width: 100%;
  background: #1a1828;
}
.hero img {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== Features ===== */
.features {
  background: var(--color-bg-cream);
  padding: 72px 0 80px;
  background-image:
    radial-gradient(circle at 8% 30%, rgba(194,91,109,0.05) 0%, transparent 30%),
    radial-gradient(circle at 92% 70%, rgba(194,91,109,0.05) 0%, transparent 30%);
}
.section-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 400;
  text-align: center;
  margin-bottom: 22px;
  letter-spacing: 0.04em;
  color: #3a3a3a;
}
.section-title .accent {
  color: var(--color-accent);
  font-weight: 500;
}
.section-lead {
  text-align: center;
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 56px;
  line-height: 2;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 780px;
  margin: 0 auto;
}
.feature { text-align: center; }
.feature-icon {
  width: 78px;
  height: 78px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid rgba(194,91,109,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(194,91,109,0.06);
}
.feature h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--color-accent);
  margin-bottom: 14px;
  font-weight: 500;
  letter-spacing: 0.05em;
}
.feature p {
  font-size: 12.5px;
  color: var(--color-text-light);
  line-height: 1.85;
}

/* ===== Mid section ===== */
.mid-section {
  width: 100%;
  background: #1a1828;
}
.mid-section img {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== Recommend ===== */
.recommend {
  background: var(--color-bg-cream-2);
  padding: 56px 0 64px;
}
.section-title-sm {
  font-family: var(--font-serif);
  font-size: 20px;
  text-align: center;
  margin-bottom: 32px;
  font-weight: 400;
  letter-spacing: 0.05em;
}
.check-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 40px;
  max-width: 720px;
  margin: 0 auto;
  background: #fff;
  padding: 30px 40px;
  border-radius: 6px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.04);
}
.check-list li {
  position: relative;
  padding-left: 30px;
  font-size: 13.5px;
  line-height: 1.6;
  color: #3a3a3a;
}
.check-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid var(--color-primary);
}
.check-list li::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 6px;
  width: 8px;
  height: 4px;
  border-left: 1.5px solid var(--color-primary);
  border-bottom: 1.5px solid var(--color-primary);
  transform: rotate(-45deg);
}

/* ===== CTA ===== */
.cta {
  background: linear-gradient(135deg, #443d5a 0%, #5a3852 50%, #6b3a52 100%);
  color: #fff;
  padding: 64px 0;
  position: relative;
  overflow: hidden;
}
.cta-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
}
.cta-text h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 400;
  margin-bottom: 16px;
  line-height: 1.5;
  letter-spacing: 0.04em;
}
.cta-text p {
  font-size: 13.5px;
  margin-bottom: 28px;
  opacity: 0.9;
  letter-spacing: 0.04em;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: #fff;
  padding: 16px 64px;
  border-radius: 50px;
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 0.08em;
  box-shadow: 0 6px 18px rgba(194,91,109,0.4);
  transition: opacity 0.2s, transform 0.2s;
}
.btn-primary .arrow {
  margin-left: 18px;
  font-size: 22px;
  font-weight: 300;
}
.btn-primary:hover { opacity: 0.92; transform: translateY(-2px); }
.cta-image img {
  max-width: 220px;
  filter: drop-shadow(0 12px 24px rgba(0,0,0,0.35));
}

/* ===== Footer ===== */
.site-footer {
  background: linear-gradient(135deg, #2f2c45 0%, #463856 100%);
  color: #fff;
  padding: 48px 0 24px;
  font-size: 13px;
}
.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 32px;
  display: grid;
  grid-template-columns: 1.5fr 1.4fr 0.6fr;
  gap: 40px;
  align-items: start;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.footer-logo .logo-mark { color: var(--color-primary); font-size: 22px; }
.footer-logo .logo-text {
  font-family: var(--font-serif);
  font-size: 17px;
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.footer-logo .logo-text small {
  font-size: 9px;
  letter-spacing: 0.18em;
  margin-top: 4px;
  opacity: 0.7;
  font-weight: 300;
}
.footer-brand p {
  font-size: 11.5px;
  line-height: 1.9;
  opacity: 0.82;
}
.footer-safety h3 {
  font-size: 12.5px;
  font-weight: 500;
  margin-bottom: 14px;
  opacity: 0.95;
  letter-spacing: 0.05em;
}
.footer-safety ul li {
  position: relative;
  padding-left: 22px;
  font-size: 11.5px;
  margin-bottom: 8px;
  opacity: 0.85;
  line-height: 1.6;
}
.footer-safety ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid var(--color-primary);
}
.footer-safety ul li::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 6px;
  width: 6px;
  height: 3px;
  border-left: 1.2px solid var(--color-primary);
  border-bottom: 1.2px solid var(--color-primary);
  transform: rotate(-45deg);
}
.footer-badge {
  display: flex;
  justify-content: flex-end;
}
.ims-badge {
  width: 78px;
  height: 78px;
  border-radius: 50%;
  background: rgba(255,255,255,0.95);
  color: var(--color-bg-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 9px;
  line-height: 1.4;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}
.ims-badge .badge-icon {
  color: var(--color-primary);
  margin-bottom: 2px;
}
.footer-bottom {
  max-width: 1000px;
  margin: 32px auto 0;
  padding: 16px 32px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 11px;
  opacity: 0.5;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .site-header { padding: 12px 16px; }
  .logo-text { font-size: 16px; }
  .btn-header { padding: 7px 16px; font-size: 11px; }

  .features { padding: 48px 0 56px; }
  .section-title { font-size: 21px; }
  .section-lead { font-size: 13px; margin-bottom: 40px; }
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    max-width: 320px;
  }

  .recommend { padding: 40px 0 48px; }
  .check-list {
    grid-template-columns: 1fr;
    padding: 24px 24px;
    gap: 12px;
  }

  .cta { padding: 48px 0; }
  .cta-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 32px;
    padding: 0 24px;
  }
  .cta-text h2 { font-size: 24px; }
  .btn-primary { padding: 14px 48px; font-size: 16px; }
  .cta-image img { margin: 0 auto; max-width: 180px; }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    text-align: center;
  }
  .footer-logo { justify-content: center; }
  .footer-badge { justify-content: center; }
}