/* ========================================
   Modern IT Company Design System
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', sans-serif;
    line-height: 1.7;
    color: #1F2937;
    background-color: #FFFFFF;
    overflow-x: hidden;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

ul, ol {
    list-style: none;
}

/* ========================================
   Design Tokens - Modern IT Theme
   ======================================== */
:root {
    /* Primary Colors - Deep Tech Blue */
    --primary-50: #EFF6FF;
    --primary-100: #DBEAFE;
    --primary-200: #BFDBFE;
    --primary-300: #93C5FD;
    --primary-400: #60A5FA;
    --primary-500: #3B82F6;
    --primary-600: #2563EB;
    --primary-700: #1D4ED8;
    --primary-800: #1E40AF;
    --primary-900: #1E3A8A;
    
    /* Secondary Colors - Cyber Teal */
    --secondary-50: #F0FDFA;
    --secondary-100: #CCFBF1;
    --secondary-200: #99F6E4;
    --secondary-300: #5EEAD4;
    --secondary-400: #2DD4BF;
    --secondary-500: #14B8A6;
    --secondary-600: #0D9488;
    --secondary-700: #0F766E;
    --secondary-800: #115E59;
    --secondary-900: #134E4A;
    
    /* Accent Colors - Electric Purple */
    --accent-50: #FAF5FF;
    --accent-100: #F3E8FF;
    --accent-200: #E9D5FF;
    --accent-300: #D8B4FE;
    --accent-400: #C084FC;
    --accent-500: #A855F7;
    --accent-600: #9333EA;
    --accent-700: #7E22CE;
    --accent-800: #6B21A8;
    --accent-900: #581C87;
    
    /* Neutral Colors */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Status Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #3B82F6;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--secondary-500) 0%, var(--secondary-600) 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent-500) 0%, var(--accent-600) 100%);
    --gradient-hero: linear-gradient(135deg, #1E3A8A 0%, #1E40AF 50%, #0F766E 100%);
    
    /* 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, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   Utility Classes
   ======================================== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 16px;
}

.section-title {
    font-size: 1.875rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
    color: var(--gray-900);
    line-height: 1.2;
    letter-spacing: -0.025em;
}

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 48px;
    font-weight: 400;
}

.highlight-accent {
    background: linear-gradient(to top, var(--accent-200) 0%, var(--accent-200) 40%, transparent 40%, transparent 100%);
    padding: 0 8px;
    border-radius: var(--radius-sm);
}

.sp-only {
    display: inline;
}

.pc-only {
    display: none;
}

/* ========================================
   Modern Button System
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: all var(--transition-base);
    text-align: center;
    width: 100%;
    max-width: 100%;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.025em;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
}

.btn:hover::before {
    transform: translateX(100%);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-lg), 0 0 20px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(37, 99, 235, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: white;
    color: var(--primary-600);
    border: 2px solid var(--primary-600);
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    background: var(--primary-50);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--primary-600);
    border: 2px solid var(--primary-300);
}

.btn-outline:hover {
    background: var(--primary-600);
    color: white;
    border-color: var(--primary-600);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.125rem;
}

.btn-line {
    background: linear-gradient(135deg, #06C755 0%, #00A845 100%);
    color: white;
    box-shadow: var(--shadow-lg), 0 0 20px rgba(6, 199, 85, 0.3);
}

.btn-line:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(6, 199, 85, 0.4);
}

.btn-email {
    background: linear-gradient(135deg, var(--error) 0%, #DC2626 100%);
    color: white;
    box-shadow: var(--shadow-lg), 0 0 20px rgba(239, 68, 68, 0.3);
}

.btn-email:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(239, 68, 68, 0.4);
}

.btn-campaign {
    background: var(--gradient-accent);
    color: white;
    box-shadow: var(--shadow-lg), 0 0 20px rgba(168, 85, 247, 0.3);
    font-size: 1.125rem;
    padding: 16px 32px;
}

.btn-campaign:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(168, 85, 247, 0.4);
}

.btn-submit {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-lg);
    width: 100%;
    font-size: 1.125rem;
    padding: 16px 32px;
}

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

/* ========================================
   Hero Section - Futuristic Design
   ======================================== */
.hero {
    background: var(--gradient-hero);
    color: white;
    padding: 80px 0 60px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(20, 184, 166, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(30deg, rgba(255, 255, 255, 0.02) 12%, transparent 12.5%, transparent 87%, rgba(255, 255, 255, 0.02) 87.5%, rgba(255, 255, 255, 0.02)),
        linear-gradient(150deg, rgba(255, 255, 255, 0.02) 12%, transparent 12.5%, transparent 87%, rgba(255, 255, 255, 0.02) 87.5%, rgba(255, 255, 255, 0.02)),
        linear-gradient(30deg, rgba(255, 255, 255, 0.02) 12%, transparent 12.5%, transparent 87%, rgba(255, 255, 255, 0.02) 87.5%, rgba(255, 255, 255, 0.02)),
        linear-gradient(150deg, rgba(255, 255, 255, 0.02) 12%, transparent 12.5%, transparent 87%, rgba(255, 255, 255, 0.02) 87.5%, rgba(255, 255, 255, 0.02));
    background-size: 80px 140px;
    pointer-events: none;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-image-space {
    margin-bottom: 32px;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
}

.hero-image-space img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.hero-image-placeholder {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 2px dashed rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-2xl);
    padding: 80px 24px;
    text-align: center;
}

.hero-image-placeholder i {
    font-size: 4rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.hero-image-placeholder p {
    font-size: 1rem;
    opacity: 0.7;
}

.hero-image-placeholder small {
    font-size: 0.875rem;
    opacity: 0.5;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 10px 24px;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    letter-spacing: 0.05em;
}

.hero-title {
    margin-bottom: 24px;
}

.catch-main {
    display: block;
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.025em;
}

.catch-sub {
    display: block;
    font-size: 1.375rem;
    font-weight: 600;
    line-height: 1.4;
    opacity: 0.95;
}

.hero-description {
    font-size: 1.0625rem;
    line-height: 1.8;
    margin-bottom: 32px;
    opacity: 0.9;
    padding: 0 8px;
    font-weight: 400;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
}

.hero-campaign {
    background: linear-gradient(135deg, var(--warning) 0%, #F59E0B 100%);
    color: white;
    padding: 14px 28px;
    border-radius: var(--radius-full);
    font-weight: 700;
    display: inline-block;
    font-size: 0.9375rem;
    box-shadow: var(--shadow-lg), 0 0 20px rgba(245, 158, 11, 0.3);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,112C1248,107,1344,117,1392,122.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-size: cover;
}

/* ========================================
   Problem Section - Clean Cards
   ======================================== */
.problem {
    padding: 80px 0;
    background: var(--gray-50);
}

.problem-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 48px;
}

.problem-card {
    background: white;
    padding: 32px 24px;
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--gray-200);
}

.problem-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-200);
}

.problem-icon {
    font-size: 2.5rem;
    color: var(--error);
    margin-bottom: 16px;
}

.problem-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--gray-900);
}

.problem-card p {
    font-size: 0.9375rem;
    color: var(--gray-600);
    line-height: 1.7;
}

.problem-solution {
    text-align: center;
    padding: 40px 24px;
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl);
    color: white;
    box-shadow: var(--shadow-xl), 0 0 40px rgba(37, 99, 235, 0.2);
}

.problem-solution-text {
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.problem-solution-text i {
    font-size: 2.5rem;
}

/* ========================================
   Solution Section - Dark Premium
   ======================================== */
.solution {
    padding: 80px 0;
    background: var(--gray-900);
    color: white;
    position: relative;
    overflow: hidden;
}

.solution::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(20, 184, 166, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.solution .section-title {
    color: white;
}

.solution-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    position: relative;
    z-index: 1;
}

.solution-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 40px 28px;
    border-radius: var(--radius-2xl);
    position: relative;
    transition: all var(--transition-base);
}

.solution-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
}

.solution-number {
    position: absolute;
    top: -20px;
    left: 28px;
    background: var(--gradient-primary);
    color: white;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    box-shadow: var(--shadow-xl), 0 0 30px rgba(37, 99, 235, 0.4);
}

.solution-icon {
    font-size: 3rem;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.solution-card h3 {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.4;
}

.solution-card p {
    font-size: 1rem;
    line-height: 1.8;
    opacity: 0.9;
}

.solution-card strong {
    color: var(--accent-300);
}

.cost-comparison {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 28px;
}

.cost-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 24px;
    border-radius: var(--radius-xl);
    text-align: center;
    border: 2px solid transparent;
    transition: all var(--transition-base);
}

.cost-bad {
    border-color: rgba(239, 68, 68, 0.5);
}

.cost-good {
    border-color: rgba(16, 185, 129, 0.5);
}

.cost-label {
    font-size: 0.875rem;
    margin-bottom: 8px;
    opacity: 0.8;
}

.cost-value {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.cost-detail {
    font-size: 0.8125rem;
    opacity: 0.7;
}

.cost-arrow {
    font-size: 1.5rem;
    color: var(--accent-300);
    text-align: center;
    transform: rotate(90deg);
}

/* ========================================
   Plans Section - Premium Cards
   ======================================== */
.plans {
    padding: 80px 0;
    background: linear-gradient(to bottom, var(--gray-50) 0%, white 100%);
}

.plans-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: 80px;
}

.plan-card {
    background: white;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    position: relative;
    border: 2px solid var(--gray-200);
}

.plan-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-2xl);
}

.plan-recommended {
    border-color: var(--primary-500);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(37, 99, 235, 0.2);
}

.plan-badge {
    position: absolute;
    top: 20px;
    right: -32px;
    background: var(--gradient-accent);
    color: white;
    padding: 8px 40px;
    transform: rotate(45deg);
    font-weight: 700;
    font-size: 0.8125rem;
    box-shadow: var(--shadow-lg);
    z-index: 10;
    letter-spacing: 0.05em;
}

.plan-header {
    background: var(--gradient-primary);
    color: white;
    padding: 40px 24px;
    text-align: center;
    position: relative;
}

.plan-name {
    font-size: 1.625rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.025em;
}

.plan-campaign-badge {
    background: var(--warning);
    color: white;
    padding: 8px 20px;
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 700;
    display: inline-block;
    margin-bottom: 16px;
    box-shadow: var(--shadow-md);
}

.plan-price {
    margin-bottom: 16px;
}

.price-original {
    font-size: 1rem;
    margin-bottom: 8px;
    opacity: 0.9;
}

.price-strike {
    text-decoration: line-through;
    font-weight: 700;
}

.price-current {
    margin: 12px 0;
}

.price-amount {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -0.025em;
}

.price-unit {
    font-size: 1.125rem;
    font-weight: 500;
}

.price-save {
    font-size: 1.0625rem;
    font-weight: 700;
    background: rgba(255, 255, 255, 0.2);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    display: inline-block;
    margin-top: 8px;
}

.price-tax {
    display: block;
    font-size: 0.875rem;
    opacity: 0.9;
    margin-top: 8px;
}

.plan-target {
    font-size: 1rem;
    opacity: 0.95;
}

.plan-value {
    background: var(--warning);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.05) 100%);
    color: #92400E;
    padding: 16px 20px;
    text-align: center;
    font-weight: 600;
    font-size: 0.9375rem;
    border-left: 4px solid var(--warning);
}

.plan-value-best {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(16, 185, 129, 0.05) 100%);
    color: #065F46;
    border-left: 4px solid var(--success);
}

.plan-value strong {
    font-size: 1.0625rem;
}

.plan-features {
    padding: 32px 24px;
}

.plan-features li {
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.9375rem;
    line-height: 1.6;
}

.plan-features li:last-child {
    border-bottom: none;
}

.plan-features i {
    color: var(--success);
    font-size: 1.25rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.plan-note {
    padding: 16px 24px;
    background: var(--gray-50);
    font-size: 0.8125rem;
    color: var(--gray-600);
    border-top: 1px dashed var(--gray-300);
}

.plan-benefit {
    padding: 20px 24px;
    background: var(--primary-50);
    border-left: 4px solid var(--primary-500);
    margin: 20px 24px;
    font-size: 0.9375rem;
    line-height: 1.7;
    border-radius: var(--radius-md);
}

.plan-card .btn {
    margin: 0 24px 32px;
    width: calc(100% - 48px);
}

/* ========================================
   Comparison Table - Modern Design
   ======================================== */
.comparison-section {
    margin-top: 80px;
}

.comparison-title {
    text-align: center;
    font-size: 1.875rem;
    font-weight: 800;
    margin-bottom: 40px;
    color: var(--gray-900);
    letter-spacing: -0.025em;
}

.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: 16px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.comparison-table {
    width: 100%;
    min-width: 800px;
    border-collapse: collapse;
    background: white;
    font-size: 0.875rem;
}

.comparison-table thead {
    background: var(--gradient-primary);
    color: white;
}

.comparison-table th {
    padding: 20px 16px;
    text-align: center;
    font-weight: 700;
    font-size: 0.9375rem;
}

.comparison-table th.feature-col {
    text-align: left;
    min-width: 200px;
}

.comparison-table th.plan-col {
    min-width: 160px;
}

.comparison-table th.plan-col-recommended {
    background: var(--primary-700);
    position: relative;
}

.comparison-table td {
    padding: 18px 16px;
    text-align: center;
    border-bottom: 1px solid var(--gray-200);
    font-size: 0.875rem;
}

.comparison-table tbody tr:last-child td {
    border-bottom: none;
}

.comparison-table tbody tr:nth-child(even) {
    background: var(--gray-50);
}

.comparison-table td.feature-name {
    font-weight: 600;
    text-align: left;
    color: var(--gray-900);
}

.comparison-table td.plan-recommended-cell {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(37, 99, 235, 0.02) 100%) !important;
    font-weight: 600;
    color: var(--primary-700);
}

.table-price {
    display: block;
    font-size: 1.125rem;
    font-weight: 800;
    margin-top: 6px;
}

.recommended-badge-small {
    background: var(--gradient-accent);
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: 700;
    display: inline-block;
    margin-top: 6px;
    letter-spacing: 0.05em;
}

.comparison-table i.fa-check-circle {
    color: var(--success);
    font-size: 1.5rem;
}

.table-note {
    text-align: center;
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-top: 16px;
}

/* ========================================
   Campaign Section
   ======================================== */
.campaign {
    padding: 80px 0;
    background: var(--gradient-accent);
    color: white;
    position: relative;
    overflow: hidden;
}

.campaign::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.campaign-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
    position: relative;
    z-index: 1;
}

.campaign-icon {
    font-size: 5rem;
    opacity: 0.9;
}

.campaign-text {
    text-align: center;
}

.campaign-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -0.025em;
}

.campaign-description {
    font-size: 1.1875rem;
    line-height: 1.7;
    margin-bottom: 28px;
}

.campaign-highlight {
    font-size: 1.5rem;
    background: rgba(255, 255, 255, 0.2);
    padding: 6px 16px;
    border-radius: var(--radius-md);
}

.campaign-conditions {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    padding: 28px 24px;
    border-radius: var(--radius-xl);
    margin-bottom: 28px;
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.campaign-conditions h3 {
    font-size: 1.1875rem;
    font-weight: 700;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.campaign-conditions ul {
    list-style: none;
}

.campaign-conditions li {
    padding: 8px 0;
    padding-left: 28px;
    position: relative;
    font-size: 1.0625rem;
}

.campaign-conditions li::before {
    content: '✓';
    position: absolute;
    left: 0;
    font-weight: 900;
    color: var(--warning);
}

/* ========================================
   Benefits Section
   ======================================== */
.benefits {
    padding: 80px 0;
    background: white;
}

.benefits-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

.benefit-card {
    text-align: center;
    padding: 48px 28px;
    background: var(--gray-50);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
    border: 2px solid var(--gray-200);
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-200);
}

.benefit-icon {
    width: 88px;
    height: 88px;
    margin: 0 auto 24px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.75rem;
    color: white;
    box-shadow: var(--shadow-lg);
}

.benefit-icon-1 {
    background: var(--gradient-primary);
}

.benefit-icon-2 {
    background: var(--gradient-accent);
}

.benefit-icon-3 {
    background: var(--gradient-secondary);
}

.benefit-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--gray-900);
}

.benefit-card p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: 20px;
}

.benefit-example {
    background: white;
    padding: 16px 20px;
    border-radius: var(--radius-lg);
    font-size: 0.9375rem;
    color: var(--primary-600);
    font-weight: 600;
    border-left: 4px solid var(--primary-500);
    box-shadow: var(--shadow-sm);
}

/* ========================================
   Profile Section
   ======================================== */
.profile {
    padding: 80px 0;
    background: linear-gradient(to bottom, var(--gray-50) 0%, white 100%);
}

.profile-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
    align-items: center;
    text-align: center;
}

.profile-image {
    flex-shrink: 0;
}

.profile-photo {
    width: 280px;
    height: 280px;
    border-radius: var(--radius-2xl);
    object-fit: cover;
    box-shadow: var(--shadow-2xl);
}

.profile-placeholder {
    width: 280px;
    height: 280px;
    border-radius: var(--radius-2xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    font-size: 6rem;
    color: rgba(255, 255, 255, 0.8);
    box-shadow: var(--shadow-2xl);
}

.profile-placeholder p {
    font-size: 1.0625rem;
    margin: 0;
}

.profile-text {
    flex: 1;
}

.profile-name {
    font-size: 2rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 12px;
    letter-spacing: -0.025em;
}

.profile-title {
    font-size: 1.0625rem;
    font-weight: 400;
    color: var(--gray-600);
    display: block;
    margin-top: 8px;
}

.profile-company {
    font-size: 1.1875rem;
    color: var(--primary-600);
    font-weight: 600;
    margin-bottom: 20px;
}

.profile-specialty {
    display: flex;
    gap: 10px;
    margin-bottom: 28px;
    flex-wrap: wrap;
    justify-content: center;
}

.specialty-tag {
    background: var(--gradient-primary);
    color: white;
    padding: 8px 20px;
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.profile-description p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: 20px;
    text-align: left;
}

.profile-philosophy {
    background: var(--primary-50);
    padding: 32px 28px;
    border-radius: var(--radius-xl);
    border-left: 4px solid var(--primary-500);
    margin-top: 28px;
    text-align: left;
}

.profile-philosophy h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.profile-philosophy h4 i {
    color: var(--primary-500);
}

.profile-philosophy p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--gray-700);
}

/* ========================================
   FAQ Section
   ======================================== */
.faq {
    padding: 80px 0;
    background: white;
}

.faq-list {
    max-width: 100%;
}

.faq-item {
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    margin-bottom: 20px;
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-300);
}

.faq-question {
    padding: 24px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--gray-900);
    background: var(--gray-50);
    transition: all var(--transition-base);
}

.faq-question:hover {
    background: var(--primary-50);
}

.faq-question > i:first-child {
    color: var(--primary-600);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.faq-question span {
    flex: 1;
}

.faq-toggle {
    color: var(--primary-600);
    font-size: 1.125rem;
    transition: transform var(--transition-base);
}

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

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

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

.faq-answer p {
    padding: 24px 20px;
    font-size: 1rem;
    line-height: 1.8;
    color: var(--gray-600);
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
    padding: 80px 0;
    background: var(--gradient-primary);
    color: white;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.cta-content {
    max-width: 100%;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -0.025em;
}

.cta-description {
    font-size: 1.1875rem;
    line-height: 1.7;
    margin-bottom: 40px;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 60px;
}

.cta-form-section {
    background: white;
    color: var(--gray-900);
    padding: 40px 24px;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    text-align: left;
}

.cta-form-section h3 {
    text-align: center;
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 40px;
    color: var(--gray-900);
}

.contact-form {
    max-width: 100%;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--gray-900);
    font-size: 0.9375rem;
}

.required {
    color: var(--error);
    font-weight: 700;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-family: 'Noto Sans JP', sans-serif;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--gray-900);
    color: white;
    padding: 60px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-company h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.footer-company p {
    opacity: 0.8;
    margin-bottom: 6px;
}

.footer-tagline {
    font-style: italic;
    margin-top: 16px;
}

.footer-info h4,
.footer-links h4 {
    font-size: 1.1875rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-info p {
    margin-bottom: 10px;
    opacity: 0.9;
    font-size: 1rem;
}

.footer-info i {
    margin-right: 10px;
    color: var(--primary-400);
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links a {
    opacity: 0.9;
    transition: all var(--transition-base);
    font-size: 1rem;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary-400);
    padding-left: 6px;
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
    font-size: 0.9375rem;
}

/* ========================================
   Responsive Design - Tablet (768px+)
   ======================================== */
@media (min-width: 768px) {
    .container {
        padding: 0 32px;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .btn {
        width: auto;
        max-width: none;
    }
    
    .hero {
        padding: 100px 0 80px;
    }
    
    .catch-main {
        font-size: 2.75rem;
    }
    
    .catch-sub {
        font-size: 1.625rem;
    }
    
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
    
    .problem-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    .solution-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
    
    .solution-card:last-child {
        grid-column: 1 / -1;
        max-width: 700px;
        margin: 0 auto;
    }
    
    .plans-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cost-comparison {
        flex-direction: row;
        align-items: center;
    }
    
    .cost-arrow {
        transform: rotate(0deg);
    }
    
    .campaign-content {
        flex-direction: row;
        text-align: left;
    }
    
    .campaign-text {
        text-align: left;
    }
    
    .campaign-icon {
        font-size: 8rem;
    }
    
    .cta-buttons {
        flex-direction: row;
        justify-content: center;
    }
    
    .cta-form-section {
        padding: 48px 40px;
    }
    
    .contact-form {
        max-width: 600px;
        margin: 0 auto;
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ========================================
   Responsive Design - Desktop (1024px+)
   ======================================== */
@media (min-width: 1024px) {
    .sp-only {
        display: none;
    }
    
    .pc-only {
        display: inline;
    }
    
    .hero {
        padding: 140px 0 100px;
    }
    
    .catch-main {
        font-size: 4rem;
    }
    
    .catch-sub {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1.25rem;
    }
    
    .problem {
        padding: 120px 0;
    }
    
    .problem-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 32px;
    }
    
    .solution {
        padding: 120px 0;
    }
    
    .solution-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .solution-card:last-child {
        grid-column: auto;
        max-width: none;
    }
    
    .plans {
        padding: 120px 0;
    }
    
    .plans-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .plan-recommended {
        transform: scale(1.05);
    }
    
    .plan-recommended:hover {
        transform: scale(1.05) translateY(-12px);
    }
    
    .benefits {
        padding: 120px 0;
    }
    
    .benefits-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .profile {
        padding: 120px 0;
    }
    
    .profile-content {
        flex-direction: row;
        text-align: left;
        align-items: flex-start;
    }
    
    .profile-specialty {
        justify-content: flex-start;
    }
    
    .profile-placeholder {
        width: 320px;
        height: 320px;
        font-size: 8rem;
    }
    
    .profile-photo {
        width: 320px;
        height: 320px;
    }
    
    .faq {
        padding: 120px 0;
    }
    
    .faq-list {
        max-width: 900px;
        margin: 0 auto;
    }
    
    .cta {
        padding: 120px 0;
    }
    
    .cta-content {
        max-width: 800px;
    }
    
    .campaign {
        padding: 100px 0;
    }
}

/* ========================================
   Scroll to Top Button
   ======================================== */
.scroll-top-btn {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    color: white;
    border: none;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-xl), 0 0 30px rgba(37, 99, 235, 0.3);
    z-index: 1000;
    transition: all var(--transition-base);
}

.scroll-top-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl), 0 0 40px rgba(37, 99, 235, 0.4);
}