/* ========================
   基本設定
   ======================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2c5f8d;
    --primary-dark: #1a3a5c;
    --secondary-color: #4a90c8;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-hover: 0 4px 20px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text-dark);
    line-height: 1.8;
    background-color: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================
   ヘッダー
   ======================== */
.header {
    background: var(--bg-white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo h1 {
    font-size: 1.4rem;
    color: var(--primary-color);
    font-weight: 700;
    line-height: 1.3;
}

.logo .subtitle {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 400;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-list {
    display: flex;
    gap: 25px;
    list-style: none;
    align-items: center;
}

.nav-list a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
    padding: 8px 12px;
    border-radius: 5px;
}

.nav-list a:hover,
.nav-list a.active {
    color: var(--primary-color);
    background: rgba(44, 95, 141, 0.1);
}

.nav-cta {
    background: var(--primary-color);
    color: var(--bg-white) !important;
    padding: 10px 20px !important;
    border-radius: 25px;
}

.nav-cta:hover {
    background: var(--primary-dark) !important;
    transform: translateY(-2px);
}

/* ========================
   ヒーローセクション
   ======================== */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--bg-white);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><path d="M0,300 Q300,200 600,300 T1200,300 L1200,600 L0,600 Z" fill="rgba(255,255,255,0.05)"/></svg>');
    background-size: cover;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,0.2);
    padding: 10px 25px;
    border-radius: 30px;
    margin-bottom: 25px;
    font-size: 0.95rem;
    backdrop-filter: blur(10px);
}

.hero-badge i {
    color: #ffd700;
}

.hero-title {
    font-size: 2.8rem;
    font-weight: 900;
    margin-bottom: 15px;
    line-height: 1.3;
    font-family: 'Noto Serif JP', serif;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    display: block;
    margin-top: 10px;
    opacity: 0.95;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 40px;
    line-height: 1.9;
    opacity: 0.95;
}

.hero-description strong {
    font-weight: 700;
    color: #ffd700;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.hero-feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.hero-feature i {
    font-size: 2.5rem;
    color: #ffd700;
}

.hero-feature span {
    font-size: 0.9rem;
    text-align: center;
    line-height: 1.5;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* ========================
   ボタン
   ======================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
}

.btn-large {
    padding: 15px 40px;
    font-size: 1.05rem;
}

.btn-primary {
    background: var(--bg-white);
    color: var(--primary-color);
}

.btn-primary:hover {
    background: var(--bg-light);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

.btn-outline {
    background: transparent;
    color: var(--bg-white);
    border-color: var(--bg-white);
}

.btn-outline:hover {
    background: var(--bg-white);
    color: var(--primary-color);
}

/* ========================
   セクション共通
   ======================== */
.section {
    padding: 80px 0;
}

.section-light {
    background: var(--bg-light);
}

.section-dark {
    background: var(--primary-dark);
    color: var(--bg-white);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-family: 'Noto Serif JP', serif;
}

.section-dark .section-title {
    color: var(--bg-white);
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.section-dark .section-subtitle {
    color: rgba(255,255,255,0.7);
}

/* ========================
   腎臓病について
   ======================== */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.about-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.about-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-icon i {
    font-size: 2.5rem;
    color: var(--bg-white);
}

.about-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.about-card p {
    color: var(--text-dark);
    line-height: 1.8;
    margin-bottom: 15px;
}

.about-card .emphasis {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1.05rem;
}

/* ========================
   血液透析とは
   ======================== */
.hd-content {
    max-width: 900px;
    margin: 0 auto;
}

.lead-text {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 25px;
    line-height: 1.9;
}

.hd-description p {
    margin-bottom: 20px;
}

.hd-mechanism,
.hd-benefits {
    margin-top: 50px;
    background: var(--bg-white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.hd-mechanism h3,
.hd-benefits h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.mechanism-steps {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.mechanism-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.benefits-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.benefits-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1.05rem;
}

.benefits-list i {
    color: var(--success-color);
    font-size: 1.2rem;
}

/* ========================
   適応症例
   ======================== */
.indications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.indication-card {
    background: var(--bg-white);
    padding: 35px 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 5px solid var(--primary-color);
}

.indication-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.indication-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.indication-icon i {
    font-size: 2rem;
    color: var(--bg-white);
}

.indication-icon.aki { background: linear-gradient(135deg, #e74c3c, #c0392b); }
.indication-icon.toxin { background: linear-gradient(135deg, #9b59b6, #8e44ad); }
.indication-icon.infection { background: linear-gradient(135deg, #e67e22, #d35400); }
.indication-icon.electrolyte { background: linear-gradient(135deg, #1abc9c, #16a085); }
.indication-icon.volume { background: linear-gradient(135deg, #3498db, #2980b9); }
.indication-icon.ckd { background: linear-gradient(135deg, #34495e, #2c3e50); }

.indication-card h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.indication-card p {
    color: var(--text-dark);
    margin-bottom: 20px;
    line-height: 1.8;
}

.indication-detail {
    background: var(--bg-light);
    padding: 15px;
    border-radius: 10px;
    font-size: 0.95rem;
    line-height: 1.7;
}

.indication-detail strong {
    color: var(--primary-color);
    display: block;
    margin-bottom: 5px;
}

/* ========================
   猫のCKD
   ======================== */
.ckd-intro {
    max-width: 1000px;
    margin: 0 auto 60px;
}

.ckd-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.stat-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--bg-white);
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-number {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 10px;
}

.stat-number span {
    font-size: 2rem;
}

.stat-label {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.stat-source {
    font-size: 0.9rem;
    opacity: 0.9;
}

.ckd-description {
    background: var(--bg-white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.iris-staging,
.qol-research,
.ihd-for-ckd,
.ckd-literature,
.ckd-considerations {
    max-width: 1000px;
    margin: 60px auto 0;
}

.iris-staging h3,
.qol-research h3,
.ihd-for-ckd h3,
.ckd-literature h3,
.ckd-considerations h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.subsection-intro {
    font-size: 1.05rem;
    margin-bottom: 30px;
    line-height: 1.9;
}

.staging-table {
    background: var(--bg-white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.staging-row {
    display: grid;
    grid-template-columns: 150px 1fr 1fr;
    gap: 20px;
    padding: 20px;
    align-items: center;
}

.staging-header {
    background: var(--primary-color);
    color: var(--bg-white);
    font-weight: 700;
}

.staging-row:not(.staging-header) {
    border-bottom: 1px solid var(--border-color);
}

.staging-row:last-child {
    border-bottom: none;
}

.stage-label {
    padding: 8px 15px;
    border-radius: 25px;
    color: var(--bg-white);
    font-weight: 600;
    text-align: center;
}

.stage-2 { background: #f39c12; }
.stage-3 { background: #e67e22; }
.stage-4 { background: #e74c3c; }

.survival-data {
    font-weight: 600;
    color: var(--primary-color);
}

.table-note {
    margin-top: 15px;
    font-size: 0.9rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 10px;
}

.qol-factors {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 25px;
}

.qol-factor {
    background: var(--bg-white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    text-align: center;
}

.qol-factor i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.qol-factor h4 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.qol-factor p {
    font-size: 0.95rem;
    line-height: 1.7;
}

.guideline-box {
    background: var(--bg-white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    border-left: 5px solid var(--primary-color);
}

.guideline-statement {
    font-size: 1.1rem;
    margin-bottom: 25px;
    line-height: 1.9;
}

.guideline-statement strong {
    color: var(--primary-color);
}

.guideline-conditions {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 25px;
}

.guideline-conditions li {
    display: flex;
    gap: 15px;
    align-items: flex-start;
    padding: 15px;
    background: var(--bg-light);
    border-radius: 10px;
}

.guideline-conditions i {
    color: var(--success-color);
    font-size: 1.3rem;
    flex-shrink: 0;
    margin-top: 3px;
}

.guideline-agreement {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: var(--primary-color);
}

.literature-card {
    background: var(--bg-white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.lit-header {
    background: var(--primary-color);
    color: var(--bg-white);
    padding: 20px 30px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.lit-header i {
    font-size: 1.5rem;
}

.lit-title {
    font-size: 1.3rem;
    font-weight: 600;
}

.lit-body {
    padding: 30px;
}

.lit-authors,
.lit-journal {
    margin-bottom: 15px;
    color: var(--text-light);
}

.lit-findings {
    background: var(--bg-light);
    padding: 20px;
    border-radius: 10px;
    line-height: 1.8;
}

.lit-findings strong {
    color: var(--primary-color);
    display: block;
    margin-bottom: 10px;
}

.consideration-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.consideration-item {
    background: var(--bg-white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    text-align: center;
}

.consideration-item i {
    font-size: 2.5rem;
    color: var(--warning-color);
    margin-bottom: 15px;
}

.consideration-item h4 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.consideration-note {
    background: var(--bg-light);
    padding: 20px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 15px;
    line-height: 1.8;
}

.consideration-note i {
    color: var(--primary-color);
    font-size: 1.5rem;
    flex-shrink: 0;
}

/* ========================
   治療の流れ
   ======================== */
.process-timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 25px;
    top: 30px;
    bottom: 30px;
    width: 3px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
}

.process-step {
    display: flex;
    gap: 30px;
    margin-bottom: 50px;
    position: relative;
}

.process-step .step-number {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    flex-shrink: 0;
    z-index: 1;
    box-shadow: 0 4px 10px rgba(44,95,141,0.3);
}

.process-step .step-content {
    flex: 1;
    background: var(--bg-white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.process-step .step-content:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-hover);
}

.process-step .step-content h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.process-step .step-content p {
    line-height: 1.8;
}

/* ========================
   エビデンス
   ======================== */
.evidence-intro {
    max-width: 800px;
    margin: 0 auto 50px;
    text-align: center;
    font-size: 1.1rem;
    line-height: 1.9;
}

.evidence-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.evidence-card {
    background: var(--bg-light);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.evidence-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.evidence-badge {
    background: var(--primary-color);
    color: var(--bg-white);
    display: inline-block;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin: 20px 20px 0;
}

.evidence-card h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    padding: 20px 20px 10px;
    line-height: 1.5;
}

.evidence-authors,
.evidence-journal {
    padding: 0 20px;
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

.evidence-findings {
    background: var(--bg-white);
    padding: 25px 20px;
    margin: 20px;
    border-radius: 10px;
}

.evidence-findings h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.evidence-findings p {
    line-height: 1.8;
    font-size: 0.95rem;
}

.evidence-link {
    padding: 0 20px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.evidence-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.evidence-link a:hover {
    color: var(--secondary-color);
}

.evidence-note {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-light);
    padding: 25px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.evidence-note i {
    color: var(--primary-color);
    font-size: 1.5rem;
    flex-shrink: 0;
}

/* ========================
   リスク・副作用
   ======================== */
.legal-notice {
    background: var(--warning-color);
    color: var(--bg-white);
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.legal-notice i {
    font-size: 1.8rem;
    flex-shrink: 0;
}

.risks-intro {
    max-width: 800px;
    margin: 0 auto 50px;
    font-size: 1.05rem;
    line-height: 1.9;
}

.risks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.risk-category {
    background: var(--bg-white);
    padding: 35px 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.risk-category h3 {
    font-size: 1.4rem;
    color: var(--accent-color);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.risk-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.risk-list li {
    padding-left: 25px;
    position: relative;
    line-height: 1.7;
}

.risk-list li::before {
    content: '●';
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.risk-management {
    max-width: 1000px;
    margin: 0 auto 60px;
}

.risk-management h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.management-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.management-item {
    background: var(--bg-white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    text-align: center;
}

.management-item i {
    font-size: 2.5rem;
    color: var(--success-color);
    margin-bottom: 15px;
}

.management-item h4 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.important-notes {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    border-left: 5px solid var(--accent-color);
}

.important-notes h3 {
    font-size: 1.6rem;
    color: var(--accent-color);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.notes-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.notes-list li {
    padding: 15px;
    background: var(--bg-light);
    border-radius: 10px;
    padding-left: 40px;
    position: relative;
    line-height: 1.8;
}

.notes-list li::before {
    content: '!';
    position: absolute;
    left: 15px;
    top: 15px;
    width: 20px;
    height: 20px;
    background: var(--accent-color);
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
}

/* ========================
   NCU-A機器紹介
   ======================== */
.ncu-intro {
    max-width: 900px;
    margin: 0 auto 60px;
    text-align: center;
}

.ncu-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--success-color), #27ae60);
    color: var(--bg-white);
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    margin-bottom: 25px;
}

.ncu-badge i {
    font-size: 1.3rem;
}

.ncu-features h3,
.ncu-specs h3,
.ncu-safety-for-cats h3,
.ncu-support h3,
.ncu-performance h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.feature-card {
    background: var(--bg-white);
    padding: 35px 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 4px solid var(--primary-color);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon i {
    font-size: 2rem;
    color: var(--bg-white);
}

.feature-card h4 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature-card p {
    line-height: 1.8;
}

.feature-card strong {
    color: var(--primary-color);
}

.ncu-specs {
    max-width: 1000px;
    margin: 0 auto 60px;
}

.specs-table {
    background: var(--bg-white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.spec-row {
    display: grid;
    grid-template-columns: 250px 1fr;
    border-bottom: 1px solid var(--border-color);
}

.spec-row:last-child {
    border-bottom: none;
}

.spec-label {
    background: var(--primary-color);
    color: var(--bg-white);
    padding: 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
}

.spec-value {
    padding: 20px;
    line-height: 1.8;
}

.ncu-safety-for-cats,
.ncu-support {
    max-width: 900px;
    margin: 0 auto 60px;
}

.safety-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.safety-list li {
    display: flex;
    gap: 15px;
    align-items: flex-start;
    background: var(--bg-white);
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.safety-list i {
    color: var(--success-color);
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 3px;
}

.safety-list strong {
    color: var(--primary-color);
}

.ncu-support p {
    background: var(--bg-white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    line-height: 1.9;
}

.ncu-support strong {
    color: var(--primary-color);
}

.ncu-performance {
    max-width: 800px;
    margin: 0 auto;
}

.performance-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.stat-item {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--bg-white);
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-item .stat-number {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 15px;
}

.stat-item .stat-number span {
    font-size: 2rem;
}

.stat-description {
    font-size: 1.1rem;
}

/* ========================
   お問い合わせ
   ======================== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.print-button-container {
    margin-top: 30px;
    text-align: center;
    padding: 25px;
    background: rgba(255,255,255,0.1);
    border-radius: 15px;
}

.print-btn {
    background: transparent;
    color: var(--bg-white);
    border: 2px solid var(--bg-white);
}

.print-btn:hover {
    background: var(--bg-white);
    color: var(--primary-dark);
}

.print-note {
    margin-top: 15px;
    font-size: 0.9rem;
    opacity: 0.9;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.hospital-name h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.hospital-director {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    gap: 20px;
}

.contact-item i {
    font-size: 1.8rem;
    color: var(--secondary-color);
    flex-shrink: 0;
    margin-top: 5px;
}

.contact-item h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    opacity: 0.9;
}

.contact-item p {
    line-height: 1.8;
}

.contact-item a {
    color: var(--bg-white);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.contact-item a:hover {
    color: var(--secondary-color);
}

.contact-item .note {
    font-size: 0.9rem;
    opacity: 0.8;
}

.contact-cta {
    margin-bottom: 30px;
}

.contact-note {
    background: rgba(255,255,255,0.1);
    padding: 20px;
    border-radius: 10px;
    display: flex;
    gap: 15px;
    line-height: 1.8;
}

.contact-note i {
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 3px;
}

.contact-map h4 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.map-container {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

/* ========================
   フッター
   ======================== */
.footer {
    background: var(--text-dark);
    color: var(--bg-white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-info h4,
.footer-links h4,
.footer-disclaimer h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.footer-info p {
    line-height: 1.8;
    opacity: 0.9;
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: var(--bg-white);
    text-decoration: none;
    opacity: 0.9;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    padding-left: 5px;
}

.footer-disclaimer p {
    line-height: 1.8;
    opacity: 0.8;
    font-size: 0.9rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.2);
    opacity: 0.7;
}

/* ========================
   スクロールトップボタン
   ======================== */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--bg-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

/* ========================
   レスポンシブ対応
   ======================== */
@media (max-width: 1024px) {
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .spec-row {
        grid-template-columns: 200px 1fr;
    }
    
    .print-button-container {
        margin-top: 20px;
        padding: 20px;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-list {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: var(--bg-white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow);
        transition: var(--transition);
        align-items: stretch;
    }
    
    .nav-list.active {
        left: 0;
    }
    
    .nav-list a {
        padding: 15px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .staging-row {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .spec-row {
        grid-template-columns: 1fr;
    }
    
    .spec-label {
        border-bottom: 1px solid var(--border-color);
    }
    
    .process-timeline::before {
        left: 15px;
    }
    
    .process-step .step-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .about-grid,
    .indications-grid,
    .evidence-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 50px 0;
    }
    
    .hero-title {
        font-size: 1.6rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-features {
        gap: 20px;
    }
    
    .hero-feature i {
        font-size: 2rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .stat-number {
        font-size: 3rem;
    }
}