/* ========================================
   グローバルスタイル
   ======================================== */
:root {
    --color-primary: #1a2b49;        /* ディープネイビー */
    --color-secondary: #c9a961;      /* エレガントゴールド */
    --color-accent: #d4af37;         /* ブライトゴールド */
    --color-dark: #0f1419;           /* ダークネイビー */
    --color-light: #f8f9fa;          /* ライトグレー */
    --color-white: #ffffff;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-border: #e0e0e0;
    
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-secondary: 'Noto Serif JP', serif;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

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

/* ========================================
   ヘッダー
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(26, 43, 73, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 20px 0;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo-image {
    height: 60px;
    width: auto;
    transition: var(--transition);
}

.logo-image:hover {
    transform: scale(1.05);
}

.nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--color-white);
    text-decoration: none;
    font-weight: 400;
    font-size: 14px;
    letter-spacing: 0.5px;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-secondary);
    transition: var(--transition);
}

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

.nav-link:hover::after {
    width: 100%;
}

.btn-header {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    color: var(--color-white);
    padding: 12px 28px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    letter-spacing: 0.5px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.btn-header:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ========================================
   ファーストビュー（ヒーロー）
   ======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-image-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    /* 画像プレースホルダー用の背景 */
    background: linear-gradient(135deg, #1a2b49 0%, #2d4563 100%);
    /* ぼかし効果を追加 */
    filter: blur(1px);
    transform: scale(1.02);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(26, 43, 73, 0.55) 0%,
        rgba(15, 20, 25, 0.45) 100%
    );
    /* オーバーレイに軽いぼかし効果 */
    backdrop-filter: blur(0.5px);
}

.hero-content {
    position: relative;
    z-index: 10;
    color: var(--color-white);
    text-align: center;
}

.hero-subtitle {
    font-size: 18px;
    font-weight: 300;
    letter-spacing: 2px;
    margin-bottom: 24px;
    opacity: 0;
    animation: fadeInUp 1s forwards;
}

.hero-title {
    font-family: var(--font-secondary);
    font-size: 56px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 32px;
    background: linear-gradient(135deg, var(--color-white), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0;
    animation: fadeInUp 1s 0.3s forwards;
}

.hero-description {
    font-size: 18px;
    line-height: 1.9;
    margin-bottom: 48px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 300;
    opacity: 0;
    animation: fadeInUp 1s 0.6s forwards;
}

.hero-cta {
    opacity: 0;
    animation: fadeInUp 1s 0.9s forwards;
}

/* アニメーション */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 1s forwards;
}

.fade-in-delay-1 {
    animation: fadeInUp 1s 0.3s forwards;
}

.fade-in-delay-2 {
    animation: fadeInUp 1s 0.6s forwards;
}

.fade-in-delay-3 {
    animation: fadeInUp 1s 0.9s forwards;
}

/* ========================================
   ボタンスタイル
   ======================================== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    color: var(--color-white);
    padding: 18px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    letter-spacing: 1px;
    transition: var(--transition);
    box-shadow: 0 8px 24px rgba(201, 169, 97, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(201, 169, 97, 0.4);
}

.btn-primary i {
    transition: var(--transition);
}

.btn-primary:hover i {
    transform: translateX(5px);
}

.btn-large {
    padding: 22px 50px;
    font-size: 18px;
}

/* ========================================
   セクション共通スタイル
   ======================================== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-family: var(--font-secondary);
    font-size: 42px;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.4;
    margin-bottom: 24px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-text-light);
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
}

/* ========================================
   お悩み共感エリア
   ======================================== */
.concerns {
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-light) 100%);
}

.checklist {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    gap: 24px;
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--color-white);
    padding: 28px 32px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.checklist-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.checklist-item i {
    font-size: 28px;
    color: var(--color-secondary);
    flex-shrink: 0;
}

.checklist-item p {
    font-size: 17px;
    color: var(--color-text);
    margin: 0;
}

/* ========================================
   原因とリスク
   ======================================== */
.risks {
    background: var(--color-primary);
    color: var(--color-white);
}

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

.risks .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.risk-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.risk-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 48px 36px;
    border-radius: 16px;
    text-align: center;
    transition: var(--transition);
}

.risk-card:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.risk-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    border-radius: 50%;
}

.risk-icon i {
    font-size: 36px;
    color: var(--color-white);
}

.risk-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--color-secondary);
}

.risk-description {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
}

/* ========================================
   解決策（ボトックス治療）
   ======================================== */
.solution {
    background: var(--color-light);
}

.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.solution-text {
    padding: 20px;
}

.solution-subtitle {
    font-size: 26px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 20px;
    margin-top: 40px;
}

.solution-subtitle:first-child {
    margin-top: 0;
}

.solution-description {
    font-size: 17px;
    line-height: 1.9;
    color: var(--color-text);
    margin-bottom: 32px;
}

.solution-description strong {
    color: var(--color-secondary);
    font-weight: 600;
}

.comparison {
    display: grid;
    gap: 20px;
    margin-top: 24px;
}

.comparison-item {
    background: var(--color-white);
    padding: 24px;
    border-radius: 12px;
    border: 2px solid var(--color-border);
    transition: var(--transition);
}

.comparison-item.highlight {
    border-color: var(--color-secondary);
    background: linear-gradient(135deg, rgba(201, 169, 97, 0.05), rgba(212, 175, 55, 0.05));
}

.comparison-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.comparison-item p {
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    margin: 0;
}

.solution-image {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.solution-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
    /* 画像プレースホルダー用の背景 */
    background: linear-gradient(135deg, #c9a961 0%, #d4af37 100%);
    min-height: 400px;
    border-radius: 16px;
}

/* ========================================
   治療のメリット
   ======================================== */
.benefits {
    background: var(--color-white);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.benefit-card {
    background: var(--color-light);
    padding: 48px 32px;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-secondary), var(--color-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.benefit-card:hover::before {
    transform: scaleX(1);
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.benefit-number {
    font-family: var(--font-secondary);
    font-size: 48px;
    font-weight: 700;
    color: var(--color-secondary);
    opacity: 0.3;
    margin-bottom: 20px;
}

.benefit-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.benefit-description {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
}

/* ========================================
   治療の流れ
   ======================================== */
.flow {
    background: linear-gradient(180deg, var(--color-light) 0%, var(--color-white) 100%);
}

.flow-steps {
    max-width: 800px;
    margin: 0 auto;
}

.flow-step {
    display: flex;
    gap: 32px;
    align-items: flex-start;
    background: var(--color-white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.flow-step:hover {
    box-shadow: var(--shadow-md);
}

.flow-step-number {
    flex-shrink: 0;
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    color: var(--color-white);
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 1px;
    border-radius: 50%;
}

.flow-step-content {
    flex: 1;
    padding-top: 20px;
}

.flow-step-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.flow-step-description {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
}

.flow-arrow {
    text-align: center;
    margin: 24px 0;
}

.flow-arrow i {
    font-size: 32px;
    color: var(--color-secondary);
}

.flow-note {
    text-align: center;
    margin-top: 48px;
    padding: 24px;
    background: rgba(201, 169, 97, 0.1);
    border-radius: 8px;
}

.flow-note p {
    font-size: 16px;
    color: var(--color-text);
    margin: 0;
}

/* ========================================
   よくある質問
   ======================================== */
.faq {
    background: var(--color-white);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 24px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-sm);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 28px 32px;
    background: var(--color-light);
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(201, 169, 97, 0.1);
}

.faq-question h3 {
    font-size: 19px;
    font-weight: 600;
    color: var(--color-primary);
    margin: 0;
}

.faq-question i {
    font-size: 20px;
    color: var(--color-secondary);
    transition: var(--transition);
}

.faq-item.active .faq-question i {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 28px 32px;
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
    margin: 0;
    background: var(--color-white);
}

/* ========================================
   クロージング・CTA
   ======================================== */
.closing {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-dark) 100%);
    color: var(--color-white);
    text-align: center;
    padding: 120px 0;
}

.closing-title {
    font-family: var(--font-secondary);
    font-size: 42px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 32px;
    background: linear-gradient(135deg, var(--color-white), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.closing-description {
    font-size: 18px;
    line-height: 1.9;
    margin-bottom: 48px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: rgba(255, 255, 255, 0.9);
}

.closing-cta {
    margin-top: 48px;
}

.closing-contact {
    margin-top: 32px;
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
}

.closing-contact i {
    color: var(--color-secondary);
    margin-right: 8px;
}

.phone-link {
    color: var(--color-secondary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.phone-link:hover {
    color: var(--color-accent);
}

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

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
    text-align: center;
}

.footer-tagline {
    font-family: var(--font-secondary);
    font-size: 24px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    letter-spacing: 2px;
    position: relative;
    display: inline-block;
}

.footer-tagline::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-secondary), transparent);
}

.footer-nav {
    display: flex;
    gap: 32px;
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-nav a:hover {
    color: var(--color-secondary);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
}

.footer-bottom p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    margin: 0;
}

/* ========================================
   レスポンシブデザイン
   ======================================== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 48px;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .solution-content {
        grid-template-columns: 1fr;
    }
    
    .solution-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: row;
        gap: 20px;
        justify-content: space-between;
    }
    
    .logo-image {
        height: 40px;
    }
    
    .nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }
    
    .btn-header {
        display: none;
    }
    
    .hero {
        height: auto;
        min-height: 600px;
        padding: 120px 0 60px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle,
    .hero-description {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 30px;
    }
    
    .section-subtitle {
        font-size: 16px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .risk-cards,
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .flow-step {
        flex-direction: column;
        text-align: center;
    }
    
    .flow-step-number {
        margin: 0 auto;
    }
    
    .footer-nav {
        flex-direction: column;
        gap: 16px;
    }
    
    .footer-tagline {
        font-size: 20px;
    }
    
    .closing {
        padding: 80px 0;
    }
    
    .closing-title {
        font-size: 32px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .btn-primary {
        padding: 16px 32px;
        font-size: 14px;
    }
    
    .btn-large {
        padding: 18px 36px;
        font-size: 16px;
    }
    
    .checklist-item {
        padding: 20px;
    }
    
    .risk-card {
        padding: 32px 24px;
    }
    
    .benefit-card {
        padding: 32px 24px;
    }
    
    .flow-step {
        padding: 28px 20px;
    }
    
    .faq-question,
    .faq-answer p {
        padding: 20px;
    }
}