/* ========================================
   CSS Variables (Design System)
   ======================================== */
:root {
    /* Colors */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #ec4899;
    --accent-color: #f59e0b;
    
    --bg-color: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --border-color: #334155;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
    --gradient-secondary: linear-gradient(135deg, #f59e0b 0%, #ec4899 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    
    /* Typography */
    --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-black: 900;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* ========================================
   Reset & Base Styles
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    margin: 0;
    padding: 0;
    width: 100%;
    overflow-x: hidden;
}

/* FOUC Prevention */
html[data-i18n-state="loading"] body {
    opacity: 0;
}

html[data-i18n-state="loaded"] body {
    opacity: 1;
    transition: opacity 0.3s ease-in;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    width: 100%;
    overflow-x: hidden;
}

/* Word Break for Natural Line Breaks */
wbr {
    display: inline-block;
    width: 0;
}

/* テキストの自動改行を防ぎ、wbrタグの位置でのみ改行 */
.btn span,
.hero-title span,
.badge span,
[data-i18n] {
    word-break: keep-all;
    overflow-wrap: normal;
}

/* 日本語の場合はモバイルで柔軟に改行（画面外への飛び出しを防ぐ） */
@media (max-width: 768px) {
    html[lang="ja"] .hero-title span,
    html[lang="ja"] .btn span,
    html[lang="ja"] .badge span {
        word-break: normal;
        overflow-wrap: break-word;
    }
}

/* ボタン内のテキストは特に厳密に制御 */
.btn {
    word-break: keep-all;
    overflow-wrap: normal;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    font-family: inherit;
    border: none;
    cursor: pointer;
}

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

/* ========================================
   Container
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   Language Selector
   ======================================== */
.language-selector {
    position: fixed;
    top: 90px;
    right: var(--spacing-md);
    z-index: 999;
}

.language-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-base);
    cursor: pointer;
}

.language-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary-light);
}

.language-btn i {
    color: var(--primary-light);
}

.language-dropdown {
    position: absolute;
    top: calc(100% + var(--spacing-xs));
    right: 0;
    min-width: 200px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    max-height: 400px;
    overflow-y: auto;
}

.language-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.9375rem;
}

.language-option:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.language-option:first-child {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.language-option:last-child {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

@media (max-width: 768px) {
    .language-selector {
        top: 80px;
        right: var(--spacing-sm);
    }
    
    .language-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.875rem;
    }
    
    .language-dropdown {
        right: auto;
        left: 0;
    }
}

/* ========================================
   Header
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition-base);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: var(--font-weight-bold);
    font-size: 1.5rem;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    color: white;
    font-size: 1.2rem;
}

.logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
    position: relative;
}

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

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

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

/* Language Selector */
.language-selector-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.language-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
}

#language-switcher {
    padding: 0.5rem 1rem;
    padding-right: 2.25rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
    min-width: 120px;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='https://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath fill='%23cbd5e1' d='M5 7.5L1 3.5h8z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 10px;
}

#language-switcher:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--primary-color);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='https://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath fill='%23f8fafc' d='M5 7.5L1 3.5h8z'/%3E%3C/svg%3E");
}

#language-switcher:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='https://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath fill='%236366f1' d='M5 7.5L1 3.5h8z'/%3E%3C/svg%3E");
}

#language-switcher option {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.5rem;
}

#language-switcher option:hover {
    background: var(--bg-tertiary);
}

#language-switcher option:checked {
    background: var(--primary-color);
    color: var(--text-primary);
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 1.5rem;
    padding: var(--spacing-xs);
}

/* ========================================
   Mobile Menu
   ======================================== */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background: var(--bg-secondary);
    z-index: 2000;
    transition: right var(--transition-base);
    box-shadow: var(--shadow-xl);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-content {
    padding: var(--spacing-lg);
}

.mobile-menu-close {
    background: transparent;
    color: var(--text-primary);
    font-size: 1.5rem;
    padding: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.mobile-nav-link {
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    font-size: 1.2rem;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.mobile-nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

/* Mobile Menu Language Selector */
.mobile-nav .language-selector-wrapper {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.mobile-language-selector {
    flex-direction: column;
    align-items: stretch;
}

.mobile-language-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    margin-bottom: 0.25rem;
}

.mobile-language-label i {
    color: var(--primary-color);
    font-size: 1rem;
}

#mobile-language-switcher {
    width: 100%;
    padding: 0.75rem 1rem;
    padding-right: 2.5rem;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-base);
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='https://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23cbd5e1' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 12px;
}

#mobile-language-switcher:hover {
    background-color: var(--bg-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='https://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23f8fafc' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    color: var(--text-primary);
}

#mobile-language-switcher:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
    background-color: var(--bg-color);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='https://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236366f1' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    color: var(--text-primary);
}

#mobile-language-switcher option {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.5rem;
    font-size: 1rem;
}

#mobile-language-switcher option:hover {
    background: var(--bg-tertiary);
}

#mobile-language-switcher option:checked {
    background: var(--primary-color);
    color: var(--text-primary);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    width: 100%;
    margin: 0;
    padding: 70px 0 0 0;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.2), transparent 50%),
                radial-gradient(circle at bottom left, rgba(236, 72, 153, 0.2), transparent 50%);
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    background-image: 
        linear-gradient(rgba(99, 102, 241, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: patternMove 20s linear infinite;
}

@keyframes patternMove {
    0% { background-position: 0 0; }
    100% { background-position: 50px 50px; }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    padding: var(--spacing-2xl) 0;
}

.hero-text {
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: var(--font-weight-black);
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

.hero-title-main {
    display: block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title-sub {
    display: block;
    color: var(--text-primary);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-base);
    text-align: center;
    white-space: nowrap;
}

/* モバイルではボタン内で柔軟に折り返す */
@media (max-width: 480px) {
    .btn {
        white-space: normal;
        min-height: 44px;
    }
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-glow);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.6), 0 0 60px rgba(236, 72, 153, 0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 40px rgba(99, 102, 241, 0.6), 0 0 60px rgba(236, 72, 153, 0.3);
    }
    50% {
        box-shadow: 0 0 50px rgba(99, 102, 241, 0.8), 0 0 80px rgba(236, 72, 153, 0.5);
    }
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    transform: translateY(-2px);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.badge i {
    color: var(--primary-light);
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.device-showcase {
    position: relative;
    width: 100%;
    max-width: 500px;
}

.device-tv {
    background: linear-gradient(145deg, #1e293b, #334155);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-xl);
    position: relative;
}

.device-screen {
    background: #000;
    border-radius: var(--radius-sm);
    aspect-ratio: 16 / 9;
    overflow: hidden;
    position: relative;
}

.video-grid-demo {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    padding: var(--spacing-md);
    height: 100%;
}

.video-grid-demo::before,
.video-grid-demo::after {
    content: '';
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.device-remote {
    position: absolute;
    bottom: -20px;
    right: -30px;
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: var(--shadow-xl);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ========================================
   Section Styles
   ======================================== */
section {
    padding: var(--spacing-2xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: var(--font-weight-black);
    margin-bottom: var(--spacing-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   Features Section
   ======================================== */
.features {
    background: linear-gradient(180deg, var(--bg-color) 0%, var(--bg-secondary) 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.feature-card.featured {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    border-color: var(--primary-light);
}

.feature-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: 0.75rem;
    font-weight: var(--font-weight-bold);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: var(--spacing-md);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    word-break: break-word;
    overflow-wrap: break-word;
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.7;
    word-break: break-word;
    overflow-wrap: break-word;
}

/* ========================================
   Download Section
   ======================================== */
.download {
    background: var(--bg-secondary);
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    margin-bottom: var(--spacing-2xl);
}

.download-title {
    font-size: 2.5rem;
    font-weight: var(--font-weight-black);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.download-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.download-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.step {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    color: white;
    flex-shrink: 0;
}

.step-text {
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
}

.download-box {
    background: linear-gradient(145deg, #1e293b, #334155);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.2);
}

.download-box-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    margin: 0 auto var(--spacing-md);
}

.download-box-title {
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xs);
}

.download-box-version,
.download-box-size {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xs);
}

.btn-download {
    width: 100%;
    margin: var(--spacing-lg) 0;
}

.download-box-note {
    color: var(--text-muted);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.tv-apps-info {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    max-width: 100%;
    box-sizing: border-box;
    overflow-wrap: break-word;
}

.tv-apps-title {
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

.tv-apps-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    word-break: break-word;
    overflow-wrap: break-word;
    word-wrap: break-word;
    max-width: 100%;
}

.tv-apps-stores {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.store-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-base);
    text-decoration: none;
    color: inherit;
}

.store-badge:hover {
    transform: translateY(-2px);
    background: var(--bg-secondary);
    text-decoration: none;
    color: inherit;
}

.store-badge i {
    font-size: 1.5rem;
    color: var(--primary-light);
}

/* ========================================
   How It Works Section
   ======================================== */
.how-it-works {
    background: var(--bg-color);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.step-card {
    background: linear-gradient(145deg, #1e293b, #334155);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    position: relative;
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.step-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-light);
    box-shadow: var(--shadow-xl);
}

.step-card-number {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: 0.75rem;
    font-weight: var(--font-weight-bold);
}

.step-card-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin: 0 auto var(--spacing-md);
}

.step-card-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    word-break: break-word;
    overflow-wrap: break-word;
}

.step-card-description {
    color: var(--text-secondary);
    line-height: 1.7;
    word-break: break-word;
    overflow-wrap: break-word;
}

.additional-features {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.additional-features-title {
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.additional-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.feature-item i {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.feature-item strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.feature-item p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* ========================================
   Manual Section
   ======================================== */
.manual {
    background: var(--bg-secondary);
}

.manual-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.manual-title {
    font-size: 2.5rem;
    font-weight: var(--font-weight-black);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.manual-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.manual-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.manual-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.manual-link:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary-light);
    transform: translateX(5px);
}

.manual-link i {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.manual-link strong {
    display: block;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.manual-link p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.manual-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.manual-preview {
    width: 300px;
    height: 400px;
    background: linear-gradient(145deg, #1e293b, #334155);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
}

.manual-preview i {
    font-size: 5rem;
    color: var(--primary-light);
    opacity: 0.5;
}

/* ========================================
   Hero Stats
   ======================================== */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: var(--font-weight-black);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    margin-bottom: var(--spacing-xs);
}

.stat-number i {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
}

/* ========================================
   Use Cases Section
   ======================================== */
.use-cases {
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.use-cases::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.use-case-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    text-align: center;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.use-case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
    background: rgba(255, 255, 255, 0.05);
}

.use-case-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin: 0 auto var(--spacing-md);
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.use-case-card:hover .use-case-icon {
    transform: scale(1.1) rotate(5deg);
}

.use-case-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    word-break: break-word;
    overflow-wrap: break-word;
}

.use-case-description {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9375rem;
    word-break: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

/* ========================================
   Comparison Section
   ======================================== */
.comparison {
    background: var(--bg-color);
    position: relative;
}

.comparison-table {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.comparison-header,
.comparison-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-sm);
}

.comparison-header {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    border-bottom: 2px solid var(--border-color);
    padding: var(--spacing-lg);
    font-weight: var(--font-weight-bold);
}

.comparison-row {
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
    transition: all var(--transition-fast);
}

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

.comparison-row:hover {
    background: rgba(255, 255, 255, 0.03);
}

.comparison-method,
.comparison-feature,
.comparison-value {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    text-align: center;
}

.comparison-feature {
    justify-content: flex-start;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.comparison-method {
    flex-direction: column;
    gap: var(--spacing-xs);
}

.comparison-method i {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.comparison-method.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.comparison-method.highlight i {
    color: var(--primary-color);
}

.comparison-value {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.comparison-value.highlight {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.text-positive {
    color: #10b981 !important;
}

.text-negative {
    color: #ef4444 !important;
}

.text-neutral {
    color: #f59e0b !important;
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(236, 72, 153, 0.15));
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 30px 30px;
    animation: patternMove 15s linear infinite;
    z-index: 0;
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-2xl);
    background: rgba(15, 23, 42, 0.7);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-xl);
    box-shadow: 0 0 60px rgba(99, 102, 241, 0.3);
}

.cta-title {
    font-size: 2.5rem;
    font-weight: var(--font-weight-black);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.cta-description {
    color: var(--text-secondary);
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-size: 0.9375rem;
    transition: all var(--transition-base);
}

.cta-feature:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-light);
    transform: translateY(-2px);
}

.cta-feature i {
    color: var(--primary-light);
    font-size: 1.25rem;
}

.btn-cta {
    font-size: 1.25rem;
    padding: var(--spacing-lg) var(--spacing-2xl);
    margin: var(--spacing-md) 0;
    box-shadow: 0 0 50px rgba(99, 102, 241, 0.5);
}

.btn-cta:hover {
    box-shadow: 0 0 70px rgba(99, 102, 241, 0.7), 0 0 100px rgba(236, 72, 153, 0.4);
}

.cta-note {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: var(--spacing-md);
}

/* ========================================
   FAQ Section
   ======================================== */
.faq {
    background: var(--bg-color);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    background: transparent;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    text-align: left;
    transition: all var(--transition-base);
}

.faq-question:hover {
    background: var(--bg-tertiary);
}

.faq-question i {
    color: var(--primary-light);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

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

.faq-answer p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: var(--font-weight-bold);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    color: var(--text-muted);
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.footer-column h4 {
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ========================================
   Responsive Styles
   ======================================== */
@media (max-width: 1024px) {
    .hero-content,
    .download-content,
    .manual-content {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        font-size: 0.95rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .btn-large {
        width: 100%;
    }
    
    .hero-visual {
        display: none;
    }
    
    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.25rem;
        padding: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 2.25rem;
    }
    
    .stat-label {
        font-size: 0.875rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .download-content {
        grid-template-columns: 1fr;
    }
    
    .manual-content {
        grid-template-columns: 1fr;
    }
    
    .manual-visual {
        display: none;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    /* モバイルでは比較表をカード形式に変更 */
    .comparison-table {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .comparison-header {
        display: none; /* モバイルではヘッダーを非表示 */
    }
    
    .comparison-row {
        display: flex;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.02);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
    }
    
    .comparison-feature {
        font-size: 1.1rem;
        font-weight: var(--font-weight-bold);
        margin-bottom: var(--spacing-xs);
        padding-bottom: var(--spacing-xs);
        border-bottom: 1px solid var(--border-color);
        text-align: left;
    }
    
    .comparison-value {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: var(--spacing-xs) var(--spacing-sm);
        background: rgba(255, 255, 255, 0.02);
        border-radius: var(--radius-sm);
        text-align: left;
        position: relative;
        gap: 0; /* gapを0にして、アイコンとテキストを近づける */
    }
    
    /* モバイル表示用の方法名ラベル（左側に配置） */
    .comparison-method-label {
        font-weight: var(--font-weight-semibold);
        font-size: 0.875rem;
        color: var(--text-secondary);
        flex-shrink: 0;
        display: inline-block;
        order: 1; /* 左側に配置 */
    }
    
    /* アイコンとテキストのラッパー（モバイル表示用） */
    .comparison-icon-text-wrapper {
        display: inline-flex;
        align-items: center;
        gap: 0.25rem;
        order: 2; /* 右側に配置 */
        flex-shrink: 0;
    }
    
    /* ラッパー内のアイコン */
    .comparison-icon-text-wrapper > i {
        flex-shrink: 0;
        width: 20px;
        text-align: center;
        margin: 0; /* マージンをリセット */
    }
    
    /* ラッパー内のテキスト */
    .comparison-icon-text-wrapper > span {
        flex-shrink: 0;
        white-space: nowrap; /* テキストの折り返しを防ぐ */
        margin: 0; /* マージンをリセット */
    }
    
    /* デスクトップ表示用：ラッパーがない場合のアイコンとテキスト */
    .comparison-value > i,
    .comparison-value > span:not(.comparison-method-label) {
        order: 2; /* 右側に配置 */
    }
    
    /* デスクトップ表示用：アイコンとテキストの間隔 */
    .comparison-value > i {
        flex-shrink: 0;
        width: 20px;
        text-align: center;
        margin-right: 0.25rem;
        margin-left: 0;
    }
    
    /* デスクトップ表示用：テキスト */
    .comparison-value > span:not(.comparison-method-label) {
        flex-shrink: 0;
        white-space: nowrap;
        margin-left: 0;
    }
    
}

/* デスクトップ表示では方法名ラベルを非表示 */
@media (min-width: 769px) {
    .comparison-method-label {
        display: none !important;
    }
}

/* 小さい画面でさらに調整 */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
        line-height: 1.3;
    }
    
    .hero-description {
        font-size: 0.95rem;
    }
    
    .btn {
        font-size: 0.9rem;
        padding: 0.65rem 1rem;
    }
    
    .badge {
        font-size: 0.8rem;
        padding: 0.4rem 0.75rem;
    }
    
    .container {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
    
    .hero {
        padding: 60px 0 0 0;
        margin: 0;
    }
    
    .hero-content {
        padding: var(--spacing-lg) 0;
    }
    
    .hero-stats {
        gap: 0.15rem;
        padding: var(--spacing-sm);
    }
    
    .stat-number {
        font-size: 1.875rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
    
    .cta-title {
        font-size: 1.5rem;
    }
    
    .cta-description {
        font-size: 1rem;
    }
    
    .btn-cta {
        font-size: 1rem;
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .comparison-method span {
        font-size: 0.875rem;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.sp-only {
    display: none;
}

@media (max-width: 768px) {
    .sp-only {
        display: inline;
    }
}

/* ========================================
   Modal Styles
   ======================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    pointer-events: none;
}

.modal.active {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    transform: scale(0.9) translateY(20px);
    transition: transform 0.3s ease;
    border: 1px solid var(--border-color);
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-xs);
    line-height: 1;
    transition: color 0.2s ease;
    z-index: 1;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.modal-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.modal-title {
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0;
}

.modal-body {
    margin-bottom: var(--spacing-lg);
}

.modal-description {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.modal-instructions {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.modal-instructions-title {
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.modal-steps {
    margin: 0;
    padding-left: var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

.modal-steps li {
    margin-bottom: var(--spacing-sm);
}

.modal-steps li:last-child {
    margin-bottom: 0;
}

.modal-footer {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.modal-close-btn {
    min-width: 120px;
}

/* モバイル対応 */
@media (max-width: 768px) {
    .modal-content {
        padding: var(--spacing-lg);
        width: 95%;
        max-height: 85vh;
    }
    
    .modal-title {
        font-size: 1.5rem;
    }
    
    .modal-icon {
        font-size: 2.5rem;
    }
    
    .modal-instructions {
        padding: var(--spacing-md);
    }
    
    .modal-steps {
        padding-left: var(--spacing-md);
        font-size: 0.9rem;
    }
}