/* =====================================================
   SparkleNest – Main Stylesheet
   Color palette:
     --teal-dark   : #1A7C6E  (primary)
     --teal-mid    : #2AA899  (accent)
     --cream       : #F5F2EC  (background)
     --warm-white  : #FFFFFF
     --charcoal    : #2B2B2B  (text)
     --gray-mid    : #7A7A7A  (muted text)
     --gray-light  : #E0DDD7  (borders / dividers)
   ===================================================== */

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

:root {
  --teal-dark:   #1A7C6E;
  --teal-mid:    #2AA899;
  --cream:       #F5F2EC;
  --warm-white:  #FFFFFF;
  --charcoal:    #2B2B2B;
  --gray-mid:    #7A7A7A;
  --gray-light:  #E0DDD7;
  --radius:      6px;
  --container:   1160px;
  --font-head:   'Noto Serif JP', 'Yu Mincho', serif;
  --font-body:   'Noto Sans JP', 'Hiragino Kaku Gothic Pro', sans-serif;
}

html { font-size: 16px; scroll-behavior: smooth; background: var(--cream); }
body {
  font-family: var(--font-body);
  color: var(--charcoal);
  background: var(--cream);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul, ol { list-style: none; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── BUTTONS ── */
.btn-primary {
  display: inline-block;
  background: var(--teal-dark);
  color: var(--warm-white);
  padding: 12px 28px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  border: 2px solid var(--teal-dark);
  cursor: pointer;
}
.btn-primary:hover { background: var(--teal-mid); border-color: var(--teal-mid); }

.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--teal-dark);
  padding: 10px 26px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  border: 2px solid var(--teal-dark);
  cursor: pointer;
}
.btn-outline:hover { background: var(--teal-dark); color: var(--warm-white); }

/* ── SECTION TITLES ── */
.section-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal-mid);
  margin-bottom: 10px;
}
.section-title {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--charcoal);
  line-height: 1.35;
  margin-bottom: 16px;
}
.section-lead {
  font-size: 1rem;
  color: var(--gray-mid);
  line-height: 1.7;
  max-width: 640px;
}
.center { text-align: center; }
.center .section-lead { margin: 0 auto; }

/* ── CENTER ALIGN MAIN BLOCKS ── */
.features-grid { margin: 0 auto; }
.steps-grid { margin: 0 auto; }
.products-grid { margin: 0 auto; }
.how-it-works .center { margin: 0 auto; }
.testimonials .center { margin: 0 auto; }
.blog .center { margin: 0 auto; }
.faq .center { margin: 0 auto; }
.cta-banner .container { text-align: center; }
.cta-banner h2 { margin-left: auto; margin-right: auto; }
.cta-banner p { margin-left: auto; margin-right: auto; max-width: 640px; }
.cta-banner .btn-primary { display: inline-block; margin-top: 20px; }

/* ────────────────────────────────────────────────── */
/* COOKIE BANNER */
/* ────────────────────────────────────────────────── */
#cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--charcoal);
  color: var(--warm-white);
  padding: 20px 24px;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(100%);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
}
#cookie-banner.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.cookie-container {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 0 24px;
}
.cookie-content h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.cookie-content p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.5;
}
.cookie-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}
#cookie-accept, #cookie-reject, #cookie-close {
  padding: 10px 20px;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  font-family: var(--font-body);
}
#cookie-accept {
  background: var(--teal-mid);
  color: var(--warm-white);
}
#cookie-accept:hover {
  background: var(--teal-dark);
}
#cookie-reject {
  background: rgba(255,255,255,0.1);
  color: var(--warm-white);
  border: 1px solid rgba(255,255,255,0.2);
}
#cookie-reject:hover {
  background: rgba(255,255,255,0.15);
}
#cookie-close {
  background: transparent;
  color: rgba(255,255,255,0.7);
  padding: 6px;
  font-size: 1.2rem;
  line-height: 1;
  border: none;
}
#cookie-close:hover {
  color: var(--warm-white);
}

@media (max-width: 768px) {
  .cookie-container {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 0 16px;
  }
  .cookie-actions {
    justify-content: flex-start;
    flex-direction: column;
  }
  #cookie-accept, #cookie-reject {
    width: 100%;
    text-align: center;
  }
  #cookie-banner { padding: 16px 16px; }
}

/* ────────────────────────────────────────────────── */
/* HEADER */
/* ────────────────────────────────────────────────── */
.site-header {
  background: var(--warm-white);
  border-bottom: 1px solid var(--gray-light);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-logo { width: 36px; height: 36px; flex-shrink: 0; }
.brand-name {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--teal-dark);
  letter-spacing: 0.02em;
}
.header-cta { display: flex; gap: 10px; align-items: center; }

/* ────────────────────────────────────────────────── */
/* HERO – Block 1 */
/* ────────────────────────────────────────────────── */
.hero {
  background: var(--teal-dark);
  color: var(--warm-white);
  padding: 80px 0;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.hero-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal-mid);
  margin-bottom: 16px;
  background: rgba(255,255,255,0.1);
  padding: 4px 12px;
  border-radius: 100px;
}
.hero-title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--warm-white);
  margin-bottom: 20px;
}
.hero-lead {
  font-size: 1rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 480px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-actions .btn-primary {
  background: var(--warm-white);
  color: var(--teal-dark);
  border-color: var(--warm-white);
}
.hero-actions .btn-primary:hover { background: var(--cream); border-color: var(--cream); }
.hero-actions .btn-outline { color: var(--warm-white); border-color: rgba(255,255,255,0.6); }
.hero-actions .btn-outline:hover { background: rgba(255,255,255,0.15); }

.hero-image-wrap {
  border-radius: 12px;
  overflow: hidden;
  background: rgba(255,255,255,0.08);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-image-wrap img { width: 100%; height: 100%; object-fit: cover; }
.img-placeholder {
  width: 100%;
  height: 100%;
  background: rgba(255,255,255,0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.35);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  gap: 8px;
}
.img-placeholder svg { opacity: 0.35; }

/* ────────────────────────────────────────────────── */
/* STATS – Block 2 */
/* ────────────────────────────────────────────────── */
.stats { background: var(--warm-white); padding: 56px 0; border-bottom: 1px solid var(--gray-light); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--gray-light); border: 1px solid var(--gray-light); border-radius: var(--radius); overflow: hidden; }
.stat-item { background: var(--warm-white); padding: 32px 24px; text-align: center; }
.stat-num {
  font-family: var(--font-head);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--teal-dark);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label { font-size: 0.82rem; color: var(--gray-mid); }

/* ────────────────────────────────────────────────── */
/* FEATURES – Block 3 */
/* ────────────────────────────────────────────────── */
.features { padding: 80px 0; background: var(--cream); }
.features-header { margin-bottom: 52px; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature-card {
  background: var(--warm-white);
  border: 1px solid var(--gray-light);
  border-radius: 10px;
  padding: 32px 28px;
}
.feature-icon {
  width: 48px;
  height: 48px;
  background: #E8F5F3;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--teal-dark);
}
.feature-card h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--charcoal);
  margin-bottom: 10px;
}
.feature-card p { font-size: 0.9rem; color: var(--gray-mid); line-height: 1.7; }

/* ────────────────────────────────────────────────── */
/* TIPS SHOWCASE – Block 4 */
/* ────────────────────────────────────────────────── */
.tips-showcase { padding: 80px 0; background: var(--warm-white); }
.tips-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.tips-image-wrap {
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 5/4;
  background: var(--gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
}
.tips-image-wrap .img-placeholder { color: var(--gray-mid); }
.tips-image-wrap .img-placeholder svg { opacity: 0.4; }
.tips-list { margin-top: 28px; display: flex; flex-direction: column; gap: 16px; }
.tip-item { display: flex; gap: 14px; align-items: flex-start; }
.tip-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--teal-dark);
  color: var(--warm-white);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.tip-item p { font-size: 0.92rem; color: var(--charcoal); line-height: 1.6; }

/* ────────────────────────────────────────────────── */
/* HOW IT WORKS – Block 5 */
/* ────────────────────────────────────────────────── */
.how-it-works { padding: 80px 0; background: var(--cream); }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 52px; }
.step-card { text-align: center; padding: 24px 16px; }
.step-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--warm-white);
  border: 2px solid var(--gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--teal-dark);
}
.step-card h3 {
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--charcoal);
  margin-bottom: 8px;
}
.step-card p { font-size: 0.85rem; color: var(--gray-mid); line-height: 1.6; }
.step-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 32px;
  color: var(--gray-light);
  font-size: 1.4rem;
}

/* ────────────────────────────────────────────────── */
/* PRODUCTS – Block 6 */
/* ────────────────────────────────────────────────── */
.products { padding: 80px 0; background: var(--warm-white); }
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 52px; }
.product-card {
  background: var(--cream);
  border: 1px solid var(--gray-light);
  border-radius: 10px;
  overflow: hidden;
}
.product-img {
  aspect-ratio: 4/3;
  background: var(--gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.product-img .img-placeholder { color: var(--gray-mid); }
.product-img .img-placeholder svg { opacity: 0.4; }
.product-body { padding: 20px; }
.product-tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal-mid);
  margin-bottom: 8px;
}
.product-card h3 {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--charcoal);
  margin-bottom: 8px;
}
.product-card p { font-size: 0.85rem; color: var(--gray-mid); line-height: 1.6; margin-bottom: 16px; }
.product-price {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--teal-dark);
  margin-bottom: 14px;
}
.product-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.products-grid .product-card:last-child:nth-child(3n+1) { grid-column: 2 / 3; }

/* ────────────────────────────────────────────────── */
/* TESTIMONIALS – Block 7 */
/* ────────────────────────────────────────────────── */
.testimonials { padding: 80px 0; background: var(--cream); }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 52px; }
.testimonial-card {
  background: var(--warm-white);
  border: 1px solid var(--gray-light);
  border-radius: 10px;
  padding: 28px;
}
.testimonial-stars { color: var(--teal-mid); font-size: 1.05rem; margin-bottom: 14px; letter-spacing: 3px; }
.testimonial-card blockquote {
  font-size: 0.9rem;
  color: var(--charcoal);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gray-light);
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-mid);
  font-size: 0.7rem;
}
.author-info strong { display: block; font-size: 0.88rem; color: var(--charcoal); font-weight: 600; }
.author-info span { font-size: 0.78rem; color: var(--gray-mid); }

/* ────────────────────────────────────────────────── */
/* BLOG TEASER – Block 8 */
/* ────────────────────────────────────────────────── */
.blog { padding: 80px 0; background: var(--warm-white); }
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 52px; }
.blog-card {
  border: 1px solid var(--gray-light);
  border-radius: 10px;
  overflow: hidden;
  background: var(--cream);
}
.blog-img {
  aspect-ratio: 16/9;
  background: var(--gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.blog-img .img-placeholder { color: var(--gray-mid); }
.blog-img .img-placeholder svg { opacity: 0.4; }
.blog-body { padding: 20px; }
.blog-category {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal-mid);
  margin-bottom: 8px;
}
.blog-card h3 {
  font-family: var(--font-head);
  font-size: 0.97rem;
  font-weight: 700;
  color: var(--charcoal);
  margin-bottom: 8px;
  line-height: 1.45;
}
.blog-card p { font-size: 0.83rem; color: var(--gray-mid); line-height: 1.6; margin-bottom: 14px; }
.blog-meta { font-size: 0.76rem; color: var(--gray-mid); }
.blog-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--teal-dark);
  margin-top: 12px;
}

/* ────────────────────────────────────────────────── */
/* FAQ – Block 9 */
/* ────────────────────────────────────────────────── */
.faq { padding: 80px 0; background: var(--cream); }
.faq-list { margin-top: 52px; max-width: 760px; margin-left: auto; margin-right: auto; }
.faq-item {
  border-bottom: 1px solid var(--gray-light);
}
.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 20px 0;
  font-family: var(--font-body);
  font-size: 0.97rem;
  font-weight: 600;
  color: var(--charcoal);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.faq-question svg { flex-shrink: 0; color: var(--teal-dark); }
.faq-answer {
  overflow: hidden;
  max-height: 0;
  font-size: 0.9rem;
  color: var(--gray-mid);
  line-height: 1.7;
  padding-bottom: 0;
}
.faq-answer.open { max-height: 300px; padding-bottom: 20px; }

/* ────────────────────────────────────────────────── */
/* CTA BANNER – Block 10 */
/* ────────────────────────────────────────────────── */
.cta-banner { padding: 80px 0; background: var(--teal-dark); color: var(--warm-white); text-align: center; }
.cta-banner .section-title { color: var(--warm-white); }
.cta-banner .section-lead { color: rgba(255,255,255,0.75); margin: 0 auto 32px; }
.cta-banner .btn-primary { background: var(--warm-white); color: var(--teal-dark); border-color: var(--warm-white); }
.cta-banner .btn-primary:hover { background: var(--cream); border-color: var(--cream); }

/* ────────────────────────────────────────────────── */
/* CONTACTS – Block 11 */
/* ────────────────────────────────────────────────── */
.contacts { padding: 80px 0; background: var(--warm-white); }
.contacts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; margin-top: 52px; align-items: start; }
.contact-items { display: flex; flex-direction: column; gap: 28px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-icon {
  width: 44px;
  height: 44px;
  background: #E8F5F3;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--teal-dark);
  flex-shrink: 0;
}
.contact-item h4 { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gray-mid); margin-bottom: 4px; }
.contact-item p, .contact-item a { font-size: 0.95rem; color: var(--charcoal); line-height: 1.5; }
.contact-item a:hover { color: var(--teal-dark); }
.contact-map {
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-map .img-placeholder { color: var(--gray-mid); }

/* ────────────────────────────────────────────────── */
/* FOOTER */
/* ────────────────────────────────────────────────── */
.site-footer { background: var(--charcoal); color: rgba(255,255,255,0.75); padding: 56px 0 28px; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer-brand .brand-name { color: var(--warm-white); font-size: 1.1rem; margin-bottom: 14px; }
.footer-brand p { font-size: 0.85rem; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 280px; margin-top: 10px; }
.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a { font-size: 0.87rem; color: rgba(255,255,255,0.65); }
.footer-col ul li a:hover { color: var(--warm-white); }
.footer-divider { border: none; border-top: 1px solid rgba(255,255,255,0.1); margin-bottom: 24px; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-copyright { font-size: 0.8rem; color: rgba(255,255,255,0.4); }
.footer-legal { display: flex; gap: 20px; }
.footer-legal a { font-size: 0.8rem; color: rgba(255,255,255,0.4); }
.footer-legal a:hover { color: rgba(255,255,255,0.75); }

/* ────────────────────────────────────────────────── */
/* RESPONSIVE */
/* ────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero-inner { gap: 36px; }
  .features-grid, .products-grid, .testimonials-grid, .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .hero { padding: 56px 0; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-image-wrap { display: none; }
  .tips-inner { grid-template-columns: 1fr; }
  .contacts-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid, .products-grid, .testimonials-grid, .blog-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: span 2; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
}

@media (max-width: 480px) {
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-brand { grid-column: span 1; }
  .header-cta .btn-outline { display: none; }
}