:root {
      --green-light: #6BCFA3;
      --green-mid: #2EAF82;
      --green-dark: #1A7A60;
      --green-deep: #0D5040;
      --bg: #F7FBF9;
      --bg-card: #FFFFFF;
      --text-primary: #1A2A24;
      --text-secondary: #4A6A5C;
      --text-muted: #8AABA0;
      --border: #D4EBE2;
      --gradient-brand: linear-gradient(135deg, #6BCFA3 0%, #2EAF82 50%, #1A7A60 100%);
      --gradient-hero: linear-gradient(160deg, #EBF8F2 0%, #D4EBE2 40%, #B8DFCF 100%);
      --shadow-sm: 0 2px 8px rgba(46,175,130,0.08);
      --shadow-md: 0 8px 32px rgba(46,175,130,0.12);
      --shadow-lg: 0 20px 60px rgba(46,175,130,0.16);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-xl: 40px;
    }

    * { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      font-family: 'Noto Sans SC', -apple-system, sans-serif;
      background: var(--bg);
      color: var(--text-primary);
      line-height: 1.7;
      overflow-x: hidden;
    }

    /* NAV */
    nav {
      position: fixed; top: 0; left: 0; right: 0; z-index: 100;
      background: rgba(247,251,249,0.92);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border);
      padding: 0 40px;
      height: 72px;
      display: flex; align-items: center; justify-content: space-between;
    }
    .nav-logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
    .nav-logo img { height: 40px; }
    .nav-brand {
      font-family: 'Noto Serif SC', serif;
      font-size: 20px; font-weight: 600;
      background: var(--gradient-brand);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    }
    .nav-links { display: flex; gap: 28px; list-style: none; }
    .nav-links a {
      text-decoration: none; color: var(--text-secondary);
      font-size: 14px; font-weight: 500; transition: color 0.2s;
    }
    .nav-links a:hover { color: var(--green-mid); }
    .nav-cta {
      background: var(--gradient-brand);
      color: white; border: none; cursor: pointer;
      padding: 10px 24px; border-radius: 100px;
      font-size: 14px; font-weight: 500; font-family: inherit;
      transition: opacity 0.2s, transform 0.2s;
    }
    .nav-cta:hover { opacity: 0.9; transform: translateY(-1px); }

    /* HERO */
    .hero {
      min-height: 100vh;
      background: var(--gradient-hero);
      display: flex; align-items: center;
      padding: 120px 80px 80px;
      position: relative; overflow: hidden;
    }
    .hero::before {
      content: '';
      position: absolute; top: -30%; right: -10%;
      width: 70vw; height: 70vw;
      background: radial-gradient(circle, rgba(107,207,163,0.15) 0%, transparent 70%);
      border-radius: 50%; pointer-events: none;
    }
    .hero::after {
      content: '';
      position: absolute; bottom: -20%; left: -5%;
      width: 50vw; height: 50vw;
      background: radial-gradient(circle, rgba(46,175,130,0.08) 0%, transparent 70%);
      border-radius: 50%; pointer-events: none;
    }
    .hero-content { max-width: 600px; position: relative; z-index: 1; }
    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px;
      background: rgba(46,175,130,0.1);
      border: 1px solid rgba(46,175,130,0.25);
      padding: 6px 16px; border-radius: 100px;
      font-size: 12px; font-weight: 500; color: var(--green-dark);
      margin-bottom: 28px; letter-spacing: 0.5px;
    }
    .hero-badge::before {
      content: ''; width: 6px; height: 6px; border-radius: 50%;
      background: var(--green-mid); animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(1.3); }
    }
    .hero h1 {
      font-family: 'Noto Serif SC', serif;
      font-size: clamp(36px, 5vw, 64px);
      font-weight: 600; line-height: 1.25;
      color: var(--text-primary); margin-bottom: 24px;
    }
    .hero h1 span {
      background: var(--gradient-brand);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 17px; color: var(--text-secondary);
      line-height: 1.8; margin-bottom: 40px; max-width: 500px;
    }
    .hero-actions { display: flex; gap: 16px; align-items: center; }
    .btn-primary {
      background: var(--gradient-brand);
      color: white; border: none; cursor: pointer;
      padding: 16px 36px; border-radius: 100px;
      font-size: 16px; font-weight: 500; font-family: inherit;
      transition: opacity 0.2s, transform 0.2s, box-shadow 0.2s;
      box-shadow: var(--shadow-md);
    }
    .btn-primary:hover { opacity: 0.9; transform: translateY(-2px); box-shadow: var(--shadow-lg); }
    .btn-ghost {
      background: transparent; border: 1.5px solid var(--green-mid);
      color: var(--green-dark); padding: 15px 28px; border-radius: 100px;
      font-size: 15px; font-weight: 500; font-family: inherit; cursor: pointer;
      transition: all 0.2s;
    }
    .btn-ghost:hover { background: var(--green-mid); color: white; }
    .hero-visual {
      flex: 1; display: flex; justify-content: flex-end; align-items: center;
      position: relative; z-index: 1;
    }
    .hero-visual-inner {
      width: clamp(280px, 35vw, 500px);
      aspect-ratio: 1;
      background: white;
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      box-shadow: var(--shadow-lg);
      position: relative; overflow: hidden;
    }
    .hero-logo-big { width: 65%; }
    .orbit {
      position: absolute; top: 50%; left: 50%;
      width: 110%; height: 110%;
      border-radius: 50%;
      border: 1.5px dashed rgba(46,175,130,0.2);
      transform: translate(-50%, -50%);
      animation: spin 20s linear infinite;
    }
    .orbit-dot {
      position: absolute; width: 12px; height: 12px;
      background: var(--green-mid); border-radius: 50%;
      top: -6px; left: 50%;
      box-shadow: 0 0 12px rgba(46,175,130,0.5);
    }
    @keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }
    .hero-stats {
      position: absolute; bottom: 0; left: 80px;
      display: flex; gap: 48px; padding-bottom: 60px;
    }
    .hero-stat-num {
      font-size: 36px; font-weight: 700;
      background: var(--gradient-brand);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    }
    .hero-stat-label { font-size: 13px; color: var(--text-muted); margin-top: 2px; }

    /* SECTIONS */
    section { padding: 100px 80px; }
    .section-label {
      font-size: 12px; font-weight: 600; letter-spacing: 2px;
      text-transform: uppercase; color: var(--green-mid); margin-bottom: 16px;
    }
    .section-title {
      font-family: 'Noto Serif SC', serif;
      font-size: clamp(28px, 3.5vw, 44px);
      font-weight: 600; line-height: 1.3;
      color: var(--text-primary); margin-bottom: 20px;
    }
    .section-desc {
      font-size: 16px; color: var(--text-secondary);
      max-width: 560px; line-height: 1.8;
    }

    /* SCIENCE PILLARS */
    #science { background: white; }
    .pillars-grid {
      display: grid; grid-template-columns: repeat(4, 1fr);
      gap: 24px; margin-top: 60px;
    }
    .pillar-card {
      background: var(--bg); border: 1px solid var(--border);
      border-radius: var(--radius-lg); padding: 36px 28px;
      transition: transform 0.3s, box-shadow 0.3s; cursor: default;
    }
    .pillar-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
    .pillar-icon {
      width: 56px; height: 56px; border-radius: 16px;
      background: var(--gradient-brand);
      display: flex; align-items: center; justify-content: center;
      font-size: 24px; margin-bottom: 20px;
    }
    .pillar-title {
      font-family: 'Noto Serif SC', serif;
      font-size: 18px; font-weight: 600; margin-bottom: 12px; color: var(--text-primary);
    }
    .pillar-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.75; }

    /* INGREDIENTS */
    #ingredients { background: var(--bg); }
    .ingredients-header {
      display: flex; justify-content: space-between;
      align-items: flex-end; margin-bottom: 60px;
    }
    .filter-tabs { display: flex; gap: 8px; }
    .filter-tab {
      padding: 8px 20px; border-radius: 100px;
      border: 1.5px solid var(--border);
      background: white; color: var(--text-secondary);
      font-size: 13px; font-weight: 500; cursor: pointer;
      font-family: inherit; transition: all 0.2s;
    }
    .filter-tab.active, .filter-tab:hover {
      border-color: var(--green-mid); background: var(--green-mid); color: white;
    }
    .ingredients-grid {
      display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
    }
    .ingredient-card {
      background: white; border-radius: var(--radius-lg);
      overflow: hidden; border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .ingredient-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

    /* Ingredient image */
    .ingredient-img-wrap {
      width: 100%; height: 160px; overflow: hidden;
      background: var(--gradient-hero);
      display: flex; align-items: center; justify-content: center;
      position: relative;
    }
    .ingredient-img-wrap img {
      width: 100%; height: 100%; object-fit: cover;
      transition: transform 0.4s ease;
    }
    .ingredient-card:hover .ingredient-img-wrap img { transform: scale(1.05); }
    .ingredient-img-placeholder {
      font-size: 64px; opacity: 0.6;
    }

    .ingredient-card-header {
      padding: 20px 28px 16px;
      background: var(--gradient-hero);
      position: relative;
    }
    .ingredient-tag {
      display: inline-block; padding: 4px 12px; border-radius: 100px;
      font-size: 11px; font-weight: 600; letter-spacing: 0.5px; margin-bottom: 12px;
    }
    .tag-prebiotic { background: rgba(107,207,163,0.2); color: var(--green-dark); }
    .tag-fiber { background: rgba(46,175,130,0.15); color: var(--green-dark); }
    .tag-kinetics { background: rgba(26,122,96,0.15); color: var(--green-deep); }
    .tag-antioxidant { background: rgba(255,180,80,0.15); color: #A06020; }
    .ingredient-name {
      font-family: 'Noto Serif SC', serif;
      font-size: 20px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px;
    }
    .ingredient-en { font-size: 12px; color: var(--text-muted); }
    .ingredient-card-body { padding: 24px 28px; }
    .ingredient-targets { margin-bottom: 20px; }
    .targets-label {
      font-size: 11px; font-weight: 700; letter-spacing: 1px;
      text-transform: uppercase; color: var(--text-muted); margin-bottom: 10px;
    }
    .target-chips { display: flex; flex-wrap: wrap; gap: 6px; }
    .target-chip {
      display: inline-flex; align-items: center; gap: 5px;
      padding: 5px 12px; border-radius: 100px;
      background: rgba(46,175,130,0.08);
      border: 1px solid rgba(46,175,130,0.2);
      font-size: 12px; color: var(--green-dark); font-weight: 500;
    }
    .target-chip::before { content: '◎'; font-size: 10px; color: var(--green-mid); }
    .pathway-block {
      background: var(--bg); border-radius: var(--radius-sm);
      padding: 16px 18px; margin-bottom: 16px;
    }
    .pathway-title {
      font-size: 12px; font-weight: 600; text-transform: uppercase;
      letter-spacing: 0.5px; color: var(--text-muted); margin-bottom: 10px;
    }
    .pathway-arrow {
      display: flex; align-items: center; flex-wrap: wrap; gap: 4px;
      font-size: 13px; color: var(--text-secondary);
    }
    .pathway-step {
      padding: 3px 10px; border-radius: 4px;
      background: white; border: 1px solid var(--border); white-space: nowrap;
    }
    .pathway-sep { color: var(--green-mid); font-weight: 700; font-size: 14px; }
    .ref-link {
      display: inline-flex; align-items: center; gap: 4px;
      font-size: 11px; color: var(--green-mid);
      text-decoration: none; margin-top: 12px; transition: color 0.2s;
    }
    .ref-link:hover { color: var(--green-dark); }

    /* MECHANISM MAP */
    #mechanism { background: white; }
    .mech-container {
      margin-top: 60px; background: var(--bg);
      border-radius: var(--radius-xl); padding: 60px;
      position: relative; overflow: hidden;
    }
    .mech-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
    .mech-card {
      background: white; border-radius: var(--radius-lg); padding: 32px;
      border: 1px solid var(--border); position: relative;
    }
    .mech-num {
      position: absolute; top: -16px; left: 24px;
      width: 32px; height: 32px; background: var(--gradient-brand);
      border-radius: 50%; display: flex; align-items: center; justify-content: center;
      font-size: 14px; font-weight: 700; color: white;
    }
    .mech-title {
      font-family: 'Noto Serif SC', serif;
      font-size: 17px; font-weight: 600; margin-bottom: 16px; margin-top: 8px;
    }
    .mech-items { list-style: none; }
    .mech-items li {
      display: flex; align-items: flex-start; gap: 8px;
      font-size: 13px; color: var(--text-secondary);
      padding: 6px 0; border-bottom: 1px solid var(--border);
    }
    .mech-items li:last-child { border: none; }
    .mech-items li::before { content: '→'; color: var(--green-mid); font-weight: 700; flex-shrink: 0; margin-top: 1px; }
    .synergy-table {
      margin-top: 48px; width: 100%; border-collapse: collapse;
      border-radius: var(--radius-md); overflow: hidden;
    }
    .synergy-table th {
      background: var(--gradient-brand); color: white; padding: 14px 20px;
      font-size: 13px; font-weight: 600; text-align: left;
    }
    .synergy-table td {
      padding: 14px 20px; font-size: 13px;
      border-bottom: 1px solid var(--border); color: var(--text-secondary);
    }
    .synergy-table tr:nth-child(even) td { background: rgba(107,207,163,0.04); }
    .synergy-table tr:hover td { background: rgba(107,207,163,0.08); }

    /* PRODUCT */
    #product { background: var(--gradient-hero); }
    .product-layout {
      display: grid; grid-template-columns: 1fr 1fr;
      gap: 80px; align-items: center; margin-top: 60px;
    }
    .product-image-wrap { position: relative; }
    .product-pkg-img {
      width: 100%; border-radius: var(--radius-xl);
      box-shadow: var(--shadow-lg);
      transition: transform 0.4s ease;
    }
    .product-pkg-img:hover { transform: scale(1.02) rotate(1deg); }
    .product-badge-float {
      position: absolute; background: white;
      border-radius: var(--radius-md); padding: 14px 18px;
      box-shadow: var(--shadow-md); font-size: 13px;
    }
    .product-badge-float strong {
      display: block;
      background: var(--gradient-brand);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent;
      font-size: 20px; font-weight: 700;
    }
    .badge-top { top: -20px; right: -20px; }
    .badge-bottom { bottom: 20px; left: -20px; }
    .product-name {
      font-family: 'Noto Serif SC', serif;
      font-size: clamp(28px, 3vw, 40px);
      font-weight: 600; line-height: 1.3; margin-bottom: 24px;
    }
    .product-desc { font-size: 16px; color: var(--text-secondary); line-height: 1.9; margin-bottom: 32px; }
    .product-specs { margin-bottom: 36px; }
    .spec-row {
      display: flex; justify-content: space-between; align-items: center;
      padding: 12px 0; border-bottom: 1px solid var(--border);
    }
    .spec-key { font-size: 14px; color: var(--text-muted); }
    .spec-val { font-size: 14px; font-weight: 600; color: var(--text-primary); }

    /* USAGE BOX */
    .usage-box {
      background: white; border-radius: var(--radius-lg); padding: 28px 32px;
      border: 1.5px solid var(--green-mid); margin-bottom: 28px;
      box-shadow: var(--shadow-sm);
    }
    .usage-title {
      font-family: 'Noto Serif SC', serif;
      font-size: 16px; font-weight: 600; color: var(--green-dark);
      margin-bottom: 16px; display: flex; align-items: center; gap: 8px;
    }
    .usage-steps { display: flex; gap: 24px; flex-wrap: wrap; }
    .usage-step {
      display: flex; align-items: center; gap: 10px;
      background: var(--bg); border-radius: var(--radius-md);
      padding: 12px 18px; flex: 1; min-width: 140px;
    }
    .usage-step-icon { font-size: 22px; }
    .usage-step-text { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }
    .usage-step-text strong { display: block; color: var(--text-primary); font-size: 15px; }

    /* NUTRITION CHART */
    .nutrition-section {
      background: white; border-radius: var(--radius-xl);
      padding: 48px; margin-top: 60px;
    }
    .nutrition-title {
      font-family: 'Noto Serif SC', serif;
      font-size: 20px; font-weight: 600; margin-bottom: 32px;
      color: var(--text-primary); text-align: center;
    }
    .nutrition-layout { display: flex; align-items: center; gap: 60px; }
    .donut-chart {
      position: relative; width: 220px; height: 220px; flex-shrink: 0;
    }
    .donut-chart svg { width: 100%; height: 100%; }
    .donut-center {
      position: absolute; top: 50%; left: 50%;
      transform: translate(-50%, -50%);
      text-align: center;
    }
    .donut-center-val {
      font-size: 36px; font-weight: 700;
      background: var(--gradient-brand);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    }
    .donut-center-label { font-size: 12px; color: var(--text-muted); }
    .nutrition-legend { flex: 1; }
    .legend-item {
      display: flex; align-items: center; gap: 12px;
      padding: 10px 0; border-bottom: 1px solid var(--border);
    }
    .legend-item:last-child { border: none; }
    .legend-dot { width: 14px; height: 14px; border-radius: 50%; flex-shrink: 0; }
    .legend-name { flex: 1; font-size: 14px; color: var(--text-secondary); }
    .legend-pct { font-size: 14px; font-weight: 700; color: var(--text-primary); }

    /* NOTICE */
    .notice-banner {
      background: rgba(46,175,130,0.06);
      border: 1px solid rgba(46,175,130,0.2);
      border-radius: var(--radius-md); padding: 20px 28px;
      display: flex; gap: 14px; align-items: flex-start; margin-top: 48px;
    }
    .notice-icon { font-size: 20px; flex-shrink: 0; }
    .notice-text { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }
    .notice-text strong { color: var(--text-primary); }

    /* CULTURE */
    #culture { background: var(--gradient-hero); }
    .culture-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; margin-top: 60px; align-items: start; }
    .culture-values { display: grid; gap: 24px; }
    .culture-value-card {
      background: white; border-radius: var(--radius-lg); padding: 28px 32px;
      border: 1px solid var(--border); box-shadow: var(--shadow-sm);
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .culture-value-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
    .culture-value-icon { font-size: 32px; margin-bottom: 14px; }
    .culture-value-title {
      font-family: 'Noto Serif SC', serif;
      font-size: 18px; font-weight: 600; color: var(--text-primary); margin-bottom: 10px;
    }
    .culture-value-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.75; }
    .culture-mission {
      background: white; border-radius: var(--radius-xl); padding: 48px;
      box-shadow: var(--shadow-md); position: sticky; top: 100px;
    }
    .culture-mission-title {
      font-family: 'Noto Serif SC', serif;
      font-size: 22px; font-weight: 600; color: var(--text-primary); margin-bottom: 20px;
    }
    .culture-mission-text {
      font-size: 15px; color: var(--text-secondary); line-height: 1.9; margin-bottom: 24px;
    }
    .culture-tag-list { display: flex; flex-wrap: wrap; gap: 10px; }
    .culture-tag {
      padding: 8px 18px; border-radius: 100px;
      background: rgba(46,175,130,0.1);
      border: 1px solid rgba(46,175,130,0.25);
      font-size: 13px; color: var(--green-dark); font-weight: 500;
    }
    .brand-timeline { margin-top: 40px; }
    .timeline-title {
      font-size: 14px; font-weight: 600; color: var(--text-primary);
      margin-bottom: 20px; letter-spacing: 0.5px;
    }
    .timeline-item {
      display: flex; gap: 16px; padding: 14px 0;
      border-left: 2px solid var(--green-mid); margin-left: 8px;
      padding-left: 24px; position: relative;
    }
    .timeline-item::before {
      content: ''; position: absolute; left: -6px;
      width: 10px; height: 10px; border-radius: 50%;
      background: var(--green-mid);
    }
    .timeline-year { font-size: 13px; font-weight: 700; color: var(--green-dark); min-width: 50px; }
    .timeline-event { font-size: 13px; color: var(--text-secondary); }

    /* FAQ */
    #faq { background: white; }
    .faq-list { margin-top: 48px; max-width: 800px; }
    .faq-item { border-bottom: 1px solid var(--border); padding: 24px 0; }
    .faq-q {
      font-size: 16px; font-weight: 600; cursor: pointer;
      display: flex; justify-content: space-between; align-items: center;
      color: var(--text-primary); user-select: none;
    }
    .faq-q::after { content: '+'; font-size: 24px; color: var(--green-mid); transition: transform 0.3s; flex-shrink: 0; }
    .faq-item.open .faq-q::after { transform: rotate(45deg); }
    .faq-a {
      font-size: 14px; color: var(--text-secondary);
      line-height: 1.8; max-height: 0; overflow: hidden;
      transition: max-height 0.4s ease, padding-top 0.3s;
    }
    .faq-item.open .faq-a { max-height: 300px; padding-top: 16px; }

    /* FOOTER */
    footer {
      background: var(--text-primary); color: rgba(255,255,255,0.6);
      padding: 60px 80px 40px;
    }
    .footer-top {
      display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 60px; margin-bottom: 48px;
    }
    .footer-brand-name {
      font-family: 'Noto Serif SC', serif; font-size: 24px; color: white;
      background: var(--gradient-brand);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent;
      margin-bottom: 16px;
    }
    .footer-desc { font-size: 13px; line-height: 1.8; }
    .footer-col-title { font-size: 14px; font-weight: 600; color: white; margin-bottom: 20px; }
    .footer-links { list-style: none; }
    .footer-links li { margin-bottom: 10px; }
    .footer-links a {
      color: rgba(255,255,255,0.5); text-decoration: none;
      font-size: 13px; transition: color 0.2s;
    }
    .footer-links a:hover { color: var(--green-light); }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1); padding-top: 28px;
      display: flex; justify-content: space-between; align-items: center;
    }
    .footer-copy { font-size: 12px; }
    .footer-disclaimer {
      font-size: 11px; color: rgba(255,255,255,0.3);
      max-width: 500px; text-align: right; line-height: 1.6;
    }

    /* SCROLL REVEAL */
    .reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease, transform 0.7s ease; }
    .reveal.visible { opacity: 1; transform: none; }

    /* ── CORE GROUP CARDS ─────────────────────────────────── */
    .core-group-grid {
      display: grid; grid-template-columns: repeat(5, 1fr);
      gap: 20px; margin-top: 48px;
    }
    .core-card {
      background: white; border-radius: var(--radius-lg);
      padding: 32px 24px; text-align: center; position: relative;
    }
    .core-card.b-green  { border: 2px solid var(--green-mid); }
    .core-card.b-purple { border: 2px solid #D4C5E8; }
    .core-card.b-gold   { border: 2px solid #C8B88A; }
    .core-card.b-lgreen { border: 2px solid var(--green-light); }
    .core-card.b-rose   { border: 2px solid #F0B8B8; }

    .core-icon {
      width: 48px; height: 48px; border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-size: 24px; margin: 0 auto 16px;
    }
    .core-icon.i-green  { background: var(--gradient-brand); }
    .core-icon.i-purple { background: linear-gradient(135deg, #9B7EC4, #7B5EA4); }
    .core-icon.i-gold   { background: linear-gradient(135deg, #D4B88A, #B8946A); }
    .core-icon.i-rose   { background: linear-gradient(135deg, #F0A0A0, #D86A6A); }
    .core-icon img { width: 28px; height: 28px; display: block; }

    .core-name {
      font-family: 'Noto Serif SC', serif; font-size: 16px;
      font-weight: 600; margin-bottom: 8px; color: var(--text-primary);
    }
    .core-sub { font-size: 12px; color: var(--text-muted); line-height: 1.6; }

    .core-badge {
      position: absolute; top: -12px; left: 50%;
      transform: translateX(-50%); color: white;
      padding: 3px 14px; border-radius: 100px;
      font-size: 11px; font-weight: 600; white-space: nowrap;
    }
    .core-badge.b-green  { background: var(--gradient-brand); }
    .core-badge.b-purple { background: linear-gradient(135deg, #9B7EC4, #7B5EA4); }
    .core-badge.b-gold   { background: linear-gradient(135deg, #D4B88A, #B8946A); }
    .core-badge.b-rose   { background: linear-gradient(135deg, #F0A0A0, #D86A6A); }

    /* RESPONSIVE */
    @media (max-width: 1200px) {
      .pillars-grid { grid-template-columns: repeat(2, 1fr); }
      .ingredients-grid { grid-template-columns: repeat(2, 1fr); }
      .mech-grid { grid-template-columns: repeat(2, 1fr); }
      .culture-layout { grid-template-columns: 1fr; }
      .core-group-grid { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 900px) {
      nav { padding: 0 24px; }
      .nav-links { display: none; }
      section { padding: 70px 28px; }
      .hero { padding: 100px 28px 70px; flex-direction: column; }
      .hero-visual { margin-top: 40px; width: 100%; justify-content: center; }
      .hero-stats { left: 28px; }
      .pillars-grid { grid-template-columns: 1fr; }
      .ingredients-grid { grid-template-columns: 1fr; }
      .ingredients-header { flex-direction: column; gap: 20px; align-items: flex-start; }
      .mech-grid { grid-template-columns: 1fr; }
      .mech-container { padding: 32px 20px; }
      .product-layout { grid-template-columns: 1fr; gap: 40px; }
      .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
      .footer-bottom { flex-direction: column; gap: 16px; }
      .footer-disclaimer { text-align: left; max-width: 100%; }
      .nutrition-layout { flex-direction: column; }
      .usage-steps { flex-direction: column; }
      .core-group-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 560px) {
      .core-group-grid { grid-template-columns: 1fr; }
    }
    /* BOWEL DIARY */
    #bowel-diary { background: var(--bg); }
    .diary-layout { display: grid; grid-template-columns: 380px 1fr; gap: 40px; margin-top: 48px; align-items: start; }
    .diary-form-wrap {
      background: white; border-radius: var(--radius-lg);
      padding: 36px 32px; border: 1px solid var(--border);
      position: sticky; top: 92px;
    }
    .diary-form-title {
      font-family: 'Noto Serif SC', serif; font-size: 18px; font-weight: 600;
      margin-bottom: 28px; color: var(--text-primary);
      display: flex; align-items: center; gap: 10px;
    }
    .diary-form-title::before {
      content: ''; display: inline-block; width: 4px; height: 22px;
      border-radius: 2px; background: var(--gradient-brand);
    }
    .form-group { margin-bottom: 22px; }
    .form-label {
      display: block; font-size: 13px; font-weight: 500;
      color: var(--text-secondary); margin-bottom: 8px;
    }
    .form-hint { font-size: 11px; color: var(--text-muted); margin-top: 4px; }
    .form-input {
      width: 100%; padding: 10px 14px; border: 1.5px solid var(--border);
      border-radius: var(--radius-sm); font-size: 14px; font-family: inherit;
      color: var(--text-primary); background: var(--bg);
      transition: border-color 0.2s;
    }
    .form-input:focus { outline: none; border-color: var(--green-mid); box-shadow: 0 0 0 3px rgba(46,175,130,0.1); }
    .form-select {
      width: 100%; padding: 10px 14px; border: 1.5px solid var(--border);
      border-radius: var(--radius-sm); font-size: 14px; font-family: inherit;
      color: var(--text-primary); background: var(--bg); cursor: pointer;
      appearance: none; -webkit-appearance: none;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%234A6A5C' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
      background-repeat: no-repeat; background-position: right 14px center;
    }
    .form-select:focus { outline: none; border-color: var(--green-mid); }
    .range-group { display: flex; align-items: center; gap: 12px; }
    .range-val {
      min-width: 32px; text-align: center; font-size: 14px;
      font-weight: 600; color: var(--green-dark);
    }
    input[type="range"] {
      flex: 1; -webkit-appearance: none; height: 6px;
      border-radius: 3px; background: var(--border); outline: none;
    }
    input[type="range"]::-webkit-slider-thumb {
      -webkit-appearance: none; width: 20px; height: 20px;
      border-radius: 50%; background: var(--gradient-brand);
      border: 2px solid white; box-shadow: 0 1px 4px rgba(46,175,130,0.3);
      cursor: pointer;
    }
    .bristol-scale { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
    .bristol-btn {
      border: 2px solid var(--border); border-radius: var(--radius-sm);
      padding: 8px 2px; text-align: center; cursor: pointer;
      background: white; transition: all 0.2s; font-size: 11px;
      color: var(--text-secondary); line-height: 1.5;
    }
    .bristol-btn:hover { border-color: var(--green-light); background: rgba(107,207,163,0.06); }
    .bristol-btn.selected {
      border-color: var(--green-mid); background: rgba(46,175,130,0.08);
      color: var(--green-dark); font-weight: 600;
    }
    .bristol-num { font-size: 18px; font-weight: 700; display: block; margin-bottom: 2px; }
    .btn-save {
      width: 100%; padding: 14px; border: none; border-radius: var(--radius-sm);
      background: var(--gradient-brand); color: white; font-size: 15px;
      font-weight: 500; font-family: inherit; cursor: pointer;
      transition: opacity 0.2s, transform 0.2s; margin-top: 8px;
    }
    .btn-save:hover { opacity: 0.9; transform: translateY(-1px); }
    .btn-save:active { transform: translateY(0); }

    .diary-log-wrap { min-width: 0; }
    .diary-log-header {
      display: flex; justify-content: space-between; align-items: center;
      margin-bottom: 24px;
    }
    .diary-log-title {
      font-family: 'Noto Serif SC', serif; font-size: 18px; font-weight: 600;
      color: var(--text-primary); display: flex; align-items: center; gap: 10px;
    }
    .diary-log-title::before {
      content: ''; display: inline-block; width: 4px; height: 22px;
      border-radius: 2px; background: var(--gradient-brand);
    }
    .diary-stats {
      display: flex; gap: 16px; margin-bottom: 28px; flex-wrap: wrap;
    }
    .diary-stat-card {
      flex: 1; min-width: 120px; background: white;
      border-radius: var(--radius-md); padding: 20px; border: 1px solid var(--border);
      text-align: center;
    }
    .diary-stat-num {
      font-size: 28px; font-weight: 700; color: var(--green-dark);
      font-family: 'Noto Serif SC', serif;
    }
    .diary-stat-label { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
    .diary-empty {
      text-align: center; padding: 60px 20px; color: var(--text-muted); font-size: 14px;
    }
    .diary-empty-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.5; }
    .log-list { display: flex; flex-direction: column; gap: 12px; }
    .log-card {
      background: white; border-radius: var(--radius-md);
      border: 1px solid var(--border); padding: 20px 24px;
      display: grid; grid-template-columns: auto 1fr auto; gap: 8px 20px;
      align-items: center; transition: box-shadow 0.2s;
    }
    .log-card:hover { box-shadow: var(--shadow-sm); }
    .log-date {
      font-size: 13px; font-weight: 600; color: var(--text-primary);
      white-space: nowrap;
    }
    .log-weekday { font-size: 11px; color: var(--text-muted); }
    .log-fields { display: flex; flex-wrap: wrap; gap: 8px 20px; }
    .log-field { font-size: 12px; color: var(--text-secondary); }
    .log-field-val { font-weight: 600; color: var(--text-primary); }
    .log-bristol {
      display: inline-block; width: 22px; height: 22px; border-radius: 50%;
      text-align: center; line-height: 22px; font-size: 11px; font-weight: 700;
      color: white;
    }
    .log-delete {
      background: none; border: none; cursor: pointer; color: var(--text-muted);
      font-size: 18px; padding: 4px; transition: color 0.2s;
    }
    .log-delete:hover { color: #E85050; }
    .bristol-1 { background: #8B7355; }
    .bristol-2 { background: #A0845A; }
    .bristol-3 { background: #C8A86A; }
    .bristol-4 { background: var(--green-mid); }
    .bristol-5 { background: #4AAA55; }
    .bristol-6 { background: #D4A030; }
    .bristol-7 { background: #C07030; }

    /* Bristol Simple (icon style) */
    .bristol-simple-btn {
      border: 2px solid var(--border); border-radius: var(--radius-sm);
      padding: 8px 4px; text-align: center; cursor: pointer;
      background: white; transition: all 0.2s; font-size: 11px;
      color: var(--text-secondary); line-height: 1.5;
    }
    .bristol-simple-btn:hover { border-color: var(--green-light); background: rgba(107,207,163,0.06); }
    .bristol-simple-btn.selected {
      border-color: var(--green-mid); background: rgba(46,175,130,0.08);
      color: var(--green-dark); font-weight: 600;
    }
    .bs-num { font-size: 18px; font-weight: 700; display: block; margin-bottom: 2px; }

    /* Bristol Detail Panel */
    .bristol-detail-panel {
      margin-top: 10px; padding: 14px 16px;
      background: var(--bg); border-radius: var(--radius-sm);
      border: 1px solid var(--border); font-size: 13px;
      color: var(--text-secondary); line-height: 1.8;
    }
    .bristol-detail-panel:not(.shown) { display: none; }
    .btn-bristol-confirm, .btn-bristol-cancel {
      margin-top: 10px; padding: 6px 16px; border-radius: 100px;
      border: none; cursor: pointer; font-size: 12px; font-family: inherit;
    }
    .btn-bristol-confirm { background: var(--green-mid); color: white; margin-right: 8px; }
    .btn-bristol-cancel { background: #e0e0e0; color: var(--text-secondary); }

    /* Satisfaction Stars (Dianping style) */
    .sat-stars { display: flex; align-items: center; gap: 2px; }
    .star-btn {
      background: none; border: none; cursor: pointer;
      font-size: 28px; color: #ddd; padding: 0 2px;
      transition: color 0.15s, transform 0.15s; line-height: 1;
    }
    .star-btn:hover { transform: scale(1.15); }
    .star-btn.lit { color: #F5A623; }
    .sat-label {
      margin-left: 10px; font-size: 13px; font-weight: 600;
      white-space: nowrap;
    }
    .sat-label.lv1, .sat-label.lv2 { color: #E85050; }
    .sat-label.lv3, .sat-label.lv4 { color: #D4A030; }
    .sat-label.lv5, .sat-label.lv6, .sat-label.lv7 { color: var(--green-dark); }

    /* Toast */
    .form-toast {
      margin-top: 12px; padding: 10px 16px; border-radius: var(--radius-sm);
      font-size: 13px; text-align: center;
    }
    .form-toast:not(.shown) { display: none; }
    .form-toast.success { background: rgba(46,175,130,0.1); color: var(--green-dark); }
    .form-toast.error { background: rgba(232,80,80,0.1); color: #E85050; }

    @media (max-width: 960px) {
      .diary-layout { grid-template-columns: 1fr; }
      .diary-form-wrap { position: static; }
      .bristol-scale { grid-template-columns: repeat(4, 1fr); }
    }
    @media (max-width: 560px) {
      .bristol-scale { grid-template-columns: repeat(3, 1fr); }
      .diary-stats { flex-direction: column; }
    }