/* ── Reset & Base ── */
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    background: #f1f4ff;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: #2d2d3a;
    font-size: 15px;
    line-height: 1.65;
  }
  img { display: block; width: 100%; height: auto; object-fit: cover; }

  /* ── Layout ── */
  .container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
  section { padding: 56px 0; }

  /* ── Hero Banner ── */
  .hero {
    background: linear-gradient(135deg, #fff8f0 0%, #f1f4ff 60%, #e8edff 100%);
    padding: 64px 20px 48px;
    text-align: center;
  }
  .hero-tag {
    display: inline-block;
    background: #ffe0ec;
    color: #c2406a;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.08em;
    padding: 4px 14px;
    border-radius: 999px;
    margin-bottom: 18px;
  }
  .hero h1 {
    font-size: clamp(26px, 5vw, 46px);
    font-weight: 700;
    color: #1a1a2e;
    line-height: 1.2;
    margin-bottom: 14px;
  }
  .hero p {
    font-size: clamp(14px, 2vw, 17px);
    color: #555570;
    max-width: 560px;
    margin: 0 auto 36px;
  }
  .hero-img-wrap {
    max-width: 520px;
    margin: 0 auto;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 12px 48px rgba(100,100,200,0.12);
  }

  /* ── Section Title ── */
  .sec-label {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: #8888b0;
    text-transform: uppercase;
    margin-bottom: 8px;
  }
  .sec-title {
    font-size: clamp(20px, 3.5vw, 32px);
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 10px;
  }
  .sec-sub {
    font-size: 14px;
    color: #666688;
    margin-bottom: 40px;
    max-width: 540px;
  }
  .center { text-align: center; margin-left: auto; margin-right: auto; }

  /* ── Product Gallery (7 shots) ── */
  .gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  @media(min-width: 640px) {
    .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  }
  @media(min-width: 900px) {
    .gallery-grid { grid-template-columns: repeat(4, 1fr); }
  }
  .gallery-grid .span2 { grid-column: span 2; }
  .gallery-card {
    border-radius: 18px;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 4px 16px rgba(100,100,200,0.08);
    aspect-ratio: 1/1;
  }
  .gallery-card img { height: 100%; object-fit: cover; }
  .gallery-card.wide { aspect-ratio: 16/9; }

  /* ── Specs Strip ── */
  .specs-strip {
    background: #fff;
    border-radius: 20px;
    padding: 32px 28px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    box-shadow: 0 4px 20px rgba(100,100,200,0.07);
  }
  @media(min-width: 600px) {
    .specs-strip { grid-template-columns: repeat(4, 1fr); }
  }
  .spec-item { text-align: center; }
  .spec-icon { font-size: 26px; margin-bottom: 6px; }
  .spec-val {
    font-size: 16px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 2px;
  }
  .spec-key { font-size: 12px; color: #8888b0; }

  /* ── Feature Cards ── */
  .features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
  }
  @media(min-width: 600px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
  @media(min-width: 900px) { .features-grid { grid-template-columns: repeat(3, 1fr); } }
  .feat-card {
    background: #fff;
    border-radius: 18px;
    padding: 26px 22px;
    box-shadow: 0 4px 16px rgba(100,100,200,0.07);
    display: flex;
    gap: 14px;
    align-items: flex-start;
  }
  .feat-icon {
    width: 44px; height: 44px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
  }
  .feat-card h3 { font-size: 14px; font-weight: 600; color: #1a1a2e; margin-bottom: 5px; }
  .feat-card p { font-size: 13px; color: #666688; line-height: 1.55; }
  .ic1 { background: #fff0f6; }
  .ic2 { background: #f0f4ff; }
  .ic3 { background: #f0fff4; }
  .ic4 { background: #fffaf0; }
  .ic5 { background: #f5f0ff; }
  .ic6 { background: #f0faff; }

  /* ── Wide image rows ── */
  .wide-img {
    border-radius: 22px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(100,100,200,0.1);
    margin-bottom: 16px;
  }

  /* ── 2-col layout ── */
  .two-col {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
    align-items: center;
  }
  @media(min-width: 760px) {
    .two-col { grid-template-columns: 1fr 1fr; }
    .two-col.rev .col-text { order: 2; }
    .two-col.rev .col-img  { order: 1; }
  }
  .col-img { border-radius: 20px; overflow: hidden; box-shadow: 0 8px 32px rgba(100,100,200,0.1); }
  .col-text {}
  .col-text h2 { font-size: clamp(18px, 3vw, 26px); font-weight: 700; color: #1a1a2e; margin-bottom: 10px; }
  .col-text p { font-size: 14px; color: #555570; margin-bottom: 12px; }
  .tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
  .tag {
    padding: 5px 14px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 500;
  }
  .tag-y { background: #fff5d6; color: #9a6800; }
  .tag-p { background: #fde8f4; color: #9a2070; }
  .tag-b { background: #e8f0ff; color: #2a54a8; }
  .tag-g { background: #e8fff0; color: #1a7a44; }

  /* ── Process 4-step ── */
  .process-img {
    border-radius: 22px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(100,100,200,0.1);
  }
  .process-steps {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    margin-top: 24px;
  }
  @media(min-width: 600px) { .process-steps { grid-template-columns: repeat(4, 1fr); } }
  .step-card {
    background: #fff;
    border-radius: 14px;
    padding: 16px;
    text-align: center;
    box-shadow: 0 4px 14px rgba(100,100,200,0.07);
  }
  .step-num {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: #1a1a2e;
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 10px;
  }
  .step-card p { font-size: 12px; color: #555570; }
  .step-card strong { font-size: 13px; color: #1a1a2e; display: block; margin-bottom: 4px; }

  /* ── Color Series grid ── */
  .series-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  @media(min-width: 600px) { .series-grid { grid-template-columns: repeat(3, 1fr); } }
  .series-card {
    border-radius: 18px;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 4px 16px rgba(100,100,200,0.08);
    aspect-ratio: 1/1;
  }
  .series-card img { width: 100%; height: 100%; object-fit: cover; }

  /* ── Gift section ── */
  .gift-strip {
    background: linear-gradient(120deg, #fff8f0 0%, #f9f1ff 100%);
    border-radius: 24px;
    padding: 40px 28px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
    align-items: center;
  }
  @media(min-width: 760px) { .gift-strip { grid-template-columns: 1fr 1fr; } }
  .gift-img { border-radius: 18px; overflow: hidden; }
  .gift-text h2 { font-size: clamp(18px, 3vw, 26px); font-weight: 700; color: #1a1a2e; margin-bottom: 12px; }
  .gift-text p { font-size: 14px; color: #555570; margin-bottom: 10px; }
  .bullet-list { list-style: none; padding: 0; margin-top: 14px; }
  .bullet-list li {
    font-size: 13px;
    color: #444466;
    padding: 6px 0;
    display: flex;
    gap: 10px;
    align-items: flex-start;
    border-bottom: 1px solid #eeeef8;
  }
  .bullet-list li:last-child { border-bottom: none; }
  .bullet-list li::before {
    content: '✦';
    color: #f5a623;
    font-size: 11px;
    margin-top: 3px;
    flex-shrink: 0;
  }

  /* ── FAQ ── */
  .faq-wrap { max-width: 740px; margin: 0 auto; }
  .faq-item {
    background: #fff;
    border-radius: 16px;
    margin-bottom: 12px;
    box-shadow: 0 3px 12px rgba(100,100,200,0.06);
    overflow: hidden;
  }
  .faq-q {
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
    padding: 20px 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    text-align: left;
    font-family: inherit;
  }
  .faq-q-text { font-size: 14px; font-weight: 600; color: #1a1a2e; }
  .faq-arrow {
    width: 28px; height: 28px;
    border-radius: 50%;
    background: #f1f4ff;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    transition: transform 0.3s;
    color: #5566cc;
    font-size: 14px;
  }
  .faq-item.open .faq-arrow { transform: rotate(180deg); }
  .faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s;
    font-size: 13px;
    color: #555570;
    line-height: 1.65;
    padding: 0 22px;
  }
  .faq-item.open .faq-a { max-height: 320px; padding: 0 22px 20px; }

  /* ── Review Stars ── */
  .reviews-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
  }
  @media(min-width: 600px) { .reviews-grid { grid-template-columns: repeat(2, 1fr); } }
  @media(min-width: 900px) { .reviews-grid { grid-template-columns: repeat(3, 1fr); } }
  .review-card {
    background: #fff;
    border-radius: 16px;
    padding: 22px;
    box-shadow: 0 4px 14px rgba(100,100,200,0.07);
  }
  .stars { color: #f5a623; font-size: 14px; margin-bottom: 10px; }
  .review-text { font-size: 13px; color: #555570; margin-bottom: 14px; line-height: 1.6; }
  .reviewer { font-size: 12px; color: #8888b0; font-weight: 500; }

  /* ── Divider ── */
  .divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, #dde0f5, transparent);
    margin: 8px 0;
  }

  /* ── Footer ── */
  footer {
    background: #1a1a2e;
    color: #8888b0;
    text-align: center;
    padding: 32px 20px;
    font-size: 13px;
  }
  footer p { margin-bottom: 4px; }