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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2.2rem;
    font-weight: 600;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: #d94f3f;
    color: white;
    border-color: #d94f3f;
}

.btn-primary:hover, .btn-primary:focus {
    background-color: #c44232;
    border-color: #c44232;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: #fff;
    border-color: #fff;
}

.btn-secondary:hover, .btn-secondary:focus {
    background-color: #666;
    color: white;
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

/* Header */
.header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid #eee;
}

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

.logo img {
    height: auto;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav a:hover, .nav a:focus {
    color: #d94f3f;
}

.nav-cta {
    background-color: #d94f3f;
    color: white !important;
    padding: 8px 16px;
    border-radius: 5px;
}

.nav-cta:hover, .nav-cta:focus {
    background-color: #c44232;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    color: white;
    text-align: center;
}

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

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #f0f0f0;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

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

/* Fade-in Animation */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease forwards;
}

.fade-in:nth-child(2) { animation-delay: 0.2s; }
.fade-in:nth-child(3) { animation-delay: 0.4s; }
.fade-in:nth-child(4) { animation-delay: 0.6s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Section Common Styles */
section {
    padding: 80px 0;
}

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

.section-subtitle {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section - 完全版CSS */
.features {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #d94f3f, #c44232, #d94f3f);
}

.features::after {
    content: '';
    position: absolute;
    bottom: -20%;
    right: -15%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(217, 79, 63, 0.03) 0%, transparent 70%);
    border-radius: 50%;
}

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

.features .section-header h2 {
    color: #333;
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    position: relative;
}

.features .section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, #d94f3f, #c44232);
    border-radius: 2px;
}

.features .section-subtitle {
    font-size: 1.2rem;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.features-grid {
    display: grid;
    gap: 80px;
    margin-bottom: 80px;
}

.feature-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
    padding: 20px 0;
    position: relative;
}

.feature-item.feature-reverse {
    grid-template-columns: 1fr 1fr;
}

.feature-item.feature-reverse .feature-image {
    order: 2;
}

.feature-item.feature-reverse .feature-content {
    order: 1;
}

.feature-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.feature-image {
    width: 100%;
    height: 300px;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.feature-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.feature-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
    display: block;
}

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

.feature-image img:not([src]),
.feature-image img[src=""] {
    display: none;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    border: 2px dashed #d94f3f;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.image-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(217, 79, 63, 0.1), transparent);
    transition: left 0.5s;
}

.image-placeholder:hover::before {
    left: 100%;
}

.image-placeholder:hover {
    background: linear-gradient(135deg, #e9ecef, #dee2e6);
    transform: scale(1.02);
    border-color: #c44232;
}

.placeholder-content {
    text-align: center;
    color: #666;
    z-index: 2;
    position: relative;
}

.placeholder-icon {
    font-size: 3.5rem;
    margin-bottom: 15px;
    line-height: 1;
    filter: drop-shadow(2px 2px 4px rgba(0, 0, 0, 0.1));
}

.placeholder-content p {
    font-weight: 600;
    color: #d94f3f;
    margin: 0;
    font-size: 1rem;
    letter-spacing: 0.5px;
}

.feature-content {
    padding: 20px 0;
    position: relative;
}

.feature-content h3 {
    color: #d94f3f;
    margin-bottom: 25px;
    font-size: 1.8rem;
    font-weight: 600;
    position: relative;
    padding-bottom: 15px;
    visibility: visible !important;
    opacity: 1 !important;
    display: block !important;
}

.feature-content h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #d94f3f, #c44232);
    border-radius: 2px;
}

.feature-content p {
    line-height: 1.8;
    color: #333;
    font-size: 1.1rem;
    margin: 0;
    text-align: justify;
    visibility: visible !important;
    opacity: 1 !important;
    display: block !important;
}

.durability-section {
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
    padding: 70px 60px;
    border-radius: 20px;
    margin-top: 60px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.durability-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #d94f3f, #c44232, #d94f3f);
}

.durability-title {
    text-align: center;
    margin-bottom: 60px;
    color: #333;
    font-size: 2.2rem;
    font-weight: 600;
    position: relative;
}

.durability-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, #d94f3f, #c44232);
    border-radius: 2px;
}

.durability-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 50px;
}

.durability-item {
    text-align: center;
    background: white;
    padding: 50px 40px;
    border-radius: 16px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
}

.durability-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.durability-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #d94f3f, #c44232);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.durability-item:hover::before {
    transform: scaleX(1);
}

.durability-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.12);
}

.durability-icon {
    margin-bottom: 30px;
}

.icon-circle {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, #d94f3f, #c44232);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-size: 1.6rem;
    font-weight: bold;
    box-shadow: 0 6px 20px rgba(217, 79, 63, 0.3);
    transition: all 0.3s ease;
}

.durability-item:hover .icon-circle {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(217, 79, 63, 0.4);
}

.durability-item h4 {
    color: #d94f3f;
    margin-bottom: 25px;
    font-size: 1.4rem;
    font-weight: 600;
    visibility: visible !important;
    opacity: 1 !important;
    display: block !important;
}

.durability-item p {
    line-height: 1.8;
    color: #555;
    font-size: 1rem;
    margin: 0;
    text-align: justify;
    visibility: visible !important;
    opacity: 1 !important;
    display: block !important;
}

.feature-image.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #d94f3f;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    transform: translate(-50%, -50%);
    z-index: 10;
}

/* Problem & Solution Section - 完全版CSS */
.problem-solution {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
    padding: 80px 0;
}

.problem-solution::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #d94f3f, #c44232, #d94f3f);
}

.problem-solution::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(217, 79, 63, 0.05) 0%, transparent 70%);
    border-radius: 50%;
}

.problem-solution .section-header {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
}

.problem-solution .section-header h2 {
    color: #333;
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    position: relative;
}

.problem-solution .section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, #d94f3f, #c44232);
    border-radius: 2px;
}

.problem-solution .section-subtitle {
    font-size: 1.2rem;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.problem-solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    margin-bottom: 80px;
}

.problem-item {
    text-align: center;
    padding: 40px 30px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
}

.problem-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(217, 79, 63, 0.05), transparent);
    transition: left 0.6s ease;
}

.problem-item:hover::before {
    left: 100%;
}

.problem-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.problem-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.problem-icon {
    margin-bottom: 25px;
    position: relative;
}

.problem-icon-placeholder {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    background: linear-gradient(135deg, #d94f3f, #c44232);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-size: 1.8rem;
    font-weight: bold;
    box-shadow: 0 8px 25px rgba(217, 79, 63, 0.3);
    transition: all 0.3s ease;
    position: relative;
}

.problem-item:nth-child(1) .problem-icon-placeholder::before {
    content: "景";
}

.problem-item:nth-child(2) .problem-icon-placeholder::before {
    content: "劣";
}

.problem-item:nth-child(3) .problem-icon-placeholder::before {
    content: "落";
}

.problem-item:hover .problem-icon-placeholder {
    transform: scale(1.1);
    box-shadow: 0 12px 35px rgba(217, 79, 63, 0.4);
}

.problem-item h3 {
    color: #333;
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 15px;
    position: relative;
}

.problem-item p {
    color: #666;
    line-height: 1.7;
    font-size: 1rem;
    margin: 0;
}

.solution-arrow {
    text-align: center;
    margin: 60px 0;
    position: relative;
}

.solution-arrow::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #d94f3f, transparent);
    transform: translateY(-50%);
    z-index: 1;
}

.arrow-icon {
    background: white;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #d94f3f;
    box-shadow: 0 4px 15px rgba(217, 79, 63, 0.2);
    position: relative;
    z-index: 2;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.solution-content {
    background: white;
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease;
}

.solution-content.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.solution-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #d94f3f, #c44232, #d94f3f);
}

.solution-title {
    text-align: center;
    color: #d94f3f;
    margin-bottom: 50px;
    font-size: 2.2rem;
    font-weight: 600;
    position: relative;
}

.solution-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 3px;
    background: linear-gradient(90deg, #d94f3f, #c44232);
    border-radius: 2px;
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.solution-item {
    text-align: center;
    padding: 20px;
    border-radius: 12px;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.solution-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.solution-item:hover {
    transform: translateY(-5px);
    background: rgba(217, 79, 63, 0.02);
}

.solution-image {
    width: 100%;
    height: 220px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 25px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
}

.solution-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.3s ease;
    border-radius: 12px;
}

.solution-item:hover .solution-image {
    transform: scale(1.03);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.solution-item:hover .solution-image img {
    transform: scale(1.05);
}

.solution-image img:not([src]),
.solution-image img[src=""],
.solution-image.error::after {
    content: attr(alt);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #e8f5e8, #d4edda);
    border: 2px dashed #28a745;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #28a745;
    font-weight: 600;
    text-align: center;
    border-radius: 12px;
}

.solution-image.loading::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.solution-image.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #28a745;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    transform: translate(-50%, -50%);
    z-index: 3;
}

.solution-item h4 {
    color: #d94f3f;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    position: relative;
}

.solution-item h4::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: #d94f3f;
    border-radius: 1px;
}

.solution-item p {
    color: #555;
    line-height: 1.7;
    font-size: 1rem;
    margin: 0;
}

/* Benefits Section - 完全修正版 */
.benefits {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.benefits::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #d94f3f, #c44232, #d94f3f);
}

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

.benefits .section-header h2 {
    color: #333;
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    position: relative;
}

.benefits .section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, #d94f3f, #c44232);
    border-radius: 2px;
}

.benefits .section-subtitle {
    font-size: 1.2rem;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

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

.benefit-item {
    background: white !important;
    padding: 40px !important;
    border-radius: 16px !important;
    text-align: center !important;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08) !important;
    transition: all 0.4s ease !important;
    display: block !important;
    visibility: visible !important;
    opacity: 0;
    transform: translateY(30px);
    position: relative;
    overflow: hidden;
}

.benefit-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.benefit-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(217, 79, 63, 0.05), transparent);
    transition: left 0.6s ease;
}

.benefit-item:hover::before {
    left: 100%;
}

.benefit-item:hover {
    transform: translateY(-8px) !important;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12) !important;
}

.benefit-icon {
    margin-bottom: 25px !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    height: 80px !important;
}

.benefit-icon img {
    width: 50px;
    height: 50px;
    display: block;
}

.benefit-icon img[src=""],
.benefit-icon img:not([src]),
.benefit-icon img[src*="benefit-durability.svg"],
.benefit-icon img[src*="benefit-design.svg"],
.benefit-icon img[src*="benefit-construction.svg"],
.benefit-icon img[src*="benefit-maintenance.svg"],
.benefit-icon img[src*="benefit-jis.svg"],
.benefit-icon img[src*="benefit-earthquake.svg"] {
    display: none;
}

.benefit-icon::before {
    content: '';
    width: 60px;
    height: 60px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: bold;
    color: white;
    background: linear-gradient(135deg, #d94f3f, #c44232);
    box-shadow: 0 6px 20px rgba(217, 79, 63, 0.3);
    transition: all 0.3s ease;
}

.benefit-item:nth-child(1) .benefit-icon::before { content: "耐"; }
.benefit-item:nth-child(2) .benefit-icon::before { content: "意"; }
.benefit-item:nth-child(3) .benefit-icon::before { content: "施"; }
.benefit-item:nth-child(4) .benefit-icon::before { content: "保"; }
.benefit-item:nth-child(5) .benefit-icon::before { content: "品"; }
.benefit-item:nth-child(6) .benefit-icon::before { content: "震"; }

.benefit-item:hover .benefit-icon::before {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(217, 79, 63, 0.4);
}

.benefit-item h3 {
    color: #d94f3f !important;
    margin-bottom: 15px !important;
    font-size: 1.3rem !important;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    font-weight: 600 !important;
    position: relative;
}

.benefit-item h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: #d94f3f;
    border-radius: 1px;
}

.benefit-item p {
    color: #555 !important;
    line-height: 1.7 !important;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    margin: 0 !important;
    font-size: 1rem !important;
    text-align: justify;
}

/* Cases Section - 完全版 カード統一サイズ・手動ナビゲーション対応 */
.cases {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cases::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #d94f3f, #c44232, #d94f3f);
}

.cases::after {
    content: '';
    position: absolute;
    bottom: -15%;
    left: -10%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(217, 79, 63, 0.04) 0%, transparent 70%);
    border-radius: 50%;
}

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

.cases .section-header h2 {
    color: #333;
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    position: relative;
}

.cases .section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, #d94f3f, #c44232);
    border-radius: 2px;
}

.cases .section-subtitle {
    font-size: 1.2rem;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.carousel-wrapper {
    position: relative;
    max-width: 900px;
    margin: 0 auto 60px;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.carousel-wrapper.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.carousel {
    display: flex;
    transition: transform 0.5s ease-in-out;
    will-change: transform;
}

.carousel-item {
    min-width: 100%;
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.card {
    display: flex;
    background: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    outline: none;
    width: 880px;
    height: 400px;
    max-width: 880px;
    min-height: 400px;
    flex-shrink: 0;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.card:focus {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    outline: 2px solid #d94f3f;
    outline-offset: 2px;
}

.card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(217, 79, 63, 0.05), rgba(196, 66, 50, 0.05));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.card:hover::after,
.card:focus::after {
    opacity: 1;
}

.card-image {
    flex: 0 0 50%;
    width: 50%;
    height: 400px;
    overflow: hidden;
    position: relative;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.card:hover .card-image img,
.card:focus .card-image img {
    transform: scale(1.05);
}

.card-text {
    flex: 0 0 50%;
    width: 50%;
    height: 400px;
    padding: 32px 40px;
    color: #333;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    z-index: 2;
    box-sizing: border-box;
}

.card-text h3 {
    font-size: 1.8rem;
    color: #d94f3f;
    margin-bottom: 8px;
    transition: color 0.3s ease;
    line-height: 1.3;
    flex-shrink: 0;
    max-height: 2.6em;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.card:hover .card-text h3,
.card:focus .card-text h3 {
    color: #c44232;
}

.card-text .location {
    font-weight: 500;
    color: #666;
    margin-bottom: 18px;
    font-size: 0.95rem;
    flex-shrink: 0;
    line-height: 1.2;
}

.card-text p {
    line-height: 1.6;
    font-size: 1rem;
    margin-bottom: 20px;
    flex: 1;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
}

.card-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #d94f3f;
    font-weight: 500;
    transition: all 0.3s ease;
    flex-shrink: 0;
    margin-top: auto;
}

.link-text {
    font-size: 0.95rem;
}

.link-arrow {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.card:hover .link-arrow,
.card:focus .link-arrow {
    transform: translateX(5px);
}

.carousel-prev, .carousel-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: #d94f3f;
    border: none;
    color: white;
    font-size: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(217, 79, 63, 0.3);
}

.carousel-prev:hover, .carousel-next:hover,
.carousel-prev:focus, .carousel-next:focus {
    background-color: #c44232;
    outline: none;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 15px rgba(217, 79, 63, 0.4);
}

.carousel-prev {
    left: 10px;
}

.carousel-next {
    right: 10px;
}

.cases-cta {
    text-align: center;
    margin-top: 80px;
    position: relative;
}

.cases-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #d94f3f, #c44232);
    border: none;
    color: white;
    padding: 18px 36px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(217, 79, 63, 0.3);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.cases-btn.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.cases-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.cases-btn:hover::before,
.cases-btn:focus::before {
    left: 100%;
}

.cases-btn:hover,
.cases-btn:focus {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(217, 79, 63, 0.4);
    outline: none;
}

.btn-icon {
    font-size: 1.3rem;
    transition: transform 0.3s ease;
}

.cases-btn:hover .btn-icon,
.cases-btn:focus .btn-icon {
    transform: translateX(5px);
}

.card.loading {
    opacity: 0.7;
    pointer-events: none;
}

.card.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #d94f3f;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    transform: translate(-50%, -50%);
    z-index: 10;
}

.cases-btn.loading {
    opacity: 0.7;
    pointer-events: none;
}

.cases-btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 15px;
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    transform: translateY(-50%);
}

/* Contact Section - お問い合わせセクション完全版 */
.contact-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #d94f3f, #c44232, #d94f3f);
}

.contact-section::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(217, 79, 63, 0.05) 0%, transparent 70%);
    border-radius: 50%;
}

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

.contact-section .section-header h2 {
    color: #333;
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    position: relative;
}

.contact-section .section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, #d94f3f, #c44232);
    border-radius: 2px;
}

.contact-section .section-subtitle {
    font-size: 1.2rem;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.contact-buttons {
    display: flex;
    justify-content: center;
    align-items: stretch;
    gap: 30px;
    margin-bottom: 60px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.contact-btn {
    flex: 1;
    max-width: 350px;
    min-width: 300px;
    display: flex;
    align-items: center;
    padding: 30px 25px;
    background: white;
    border-radius: 16px;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
}

.contact-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(217, 79, 63, 0.05), transparent);
    transition: left 0.6s ease;
}

.contact-btn:hover::before,
.contact-btn:focus::before {
    left: 100%;
}

.contact-btn:hover,
.contact-btn:focus {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
    border-color: #d94f3f;
}

.btn-icon-wrapper {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.contact-btn-email .btn-icon-wrapper {
    background: linear-gradient(135deg, #17a2b8, #138496);
    box-shadow: 0 6px 20px rgba(23, 162, 184, 0.3);
}

.contact-btn-phone .btn-icon-wrapper {
    background: linear-gradient(135deg, #28a745, #218838);
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.3);
}

.contact-btn-form .btn-icon-wrapper {
    background: linear-gradient(135deg, #d94f3f, #c44232);
    box-shadow: 0 6px 20px rgba(217, 79, 63, 0.3);
}

.contact-btn:hover .btn-icon-wrapper,
.contact-btn:focus .btn-icon-wrapper {
    transform: scale(1.1);
}

.btn-icon {
    font-size: 1.8rem;
    color: white;
}

.btn-content {
    flex: 1;
    position: relative;
    z-index: 2;
}

.btn-content h3 {
    color: #333;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 5px;
    transition: color 0.3s ease;
}

.btn-content p {
    color: #666;
    font-size: 1rem;
    margin: 0;
    transition: color 0.3s ease;
}

.contact-btn:hover .btn-content h3,
.contact-btn:focus .btn-content h3 {
    color: #d94f3f;
}

.btn-arrow {
    font-size: 1.5rem;
    color: #d94f3f;
    font-weight: bold;
    margin-left: 15px;
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.contact-btn:hover .btn-arrow,
.contact-btn:focus .btn-arrow {
    transform: translateX(5px);
    color: #c44232;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.contact-info-item {
    display: flex;
    align-items: center;
    padding: 25px;
    background: rgba(217, 79, 63, 0.05);
    border-radius: 12px;
    border-left: 4px solid #d94f3f;
    transition: all 0.3s ease;
}

.contact-info-item:hover {
    background: rgba(217, 79, 63, 0.08);
    transform: translateX(5px);
}

.info-icon {
    font-size: 1.5rem;
    margin-right: 15px;
    color: #d94f3f;
    flex-shrink: 0;
}

.info-content strong {
    display: block;
    color: #d94f3f;
    font-weight: 600;
    margin-bottom: 5px;
    font-size: 1rem;
}

.info-content p {
    color: #555;
    margin: 0;
    line-height: 1.5;
    font-size: 0.95rem;
}

/* FAQ Section */
.faq {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.faq::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #d94f3f, #c44232, #d94f3f);
}

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

.faq .section-header h2 {
    color: #333;
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    position: relative;
}

.faq .section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, #d94f3f, #c44232);
    border-radius: 2px;
}

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

.faq-item {
    background: white;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    overflow: hidden;
}

.faq-item:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.faq-question {
    width: 100%;
    padding: 25px;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.1rem;
    font-weight: 500;
    color: #333;
    transition: color 0.3s ease;
}

.faq-question:hover,
.faq-question:focus {
    color: #d94f3f;
    outline: none;
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 300;
    transition: transform 0.3s ease;
    color: #d94f3f;
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: rgba(217, 79, 63, 0.02);
}

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

.faq-answer p {
    padding: 0 25px 25px;
    color: #666;
    line-height: 1.8;
    margin: 0;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #d94f3f, #c44232);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -20%;
    left: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-content h2 {
    margin-bottom: 20px;
    font-size: 2.2rem;
    position: relative;
}

.cta-subtitle {
    font-size: 1.3rem;
    margin-bottom: 20px;
    opacity: 0.95;
}

.cta-description {
    font-size: 1.1rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.cta-buttons .btn-primary {
    background-color: white;
    color: #d94f3f;
    border-color: white;
}

.cta-buttons .btn-primary:hover,
.cta-buttons .btn-primary:focus {
    background-color: #f0f0f0;
    border-color: #f0f0f0;
}

.cta-buttons .btn-secondary {
    color: white;
    border-color: white;
}

.cta-buttons .btn-secondary:hover,
.cta-buttons .btn-secondary:focus {
    background-color: white;
    color: #d94f3f;
}

.cta-phone {
    font-size: 1.1rem;
    opacity: 0.9;
}

.cta-phone a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s ease;
}

.cta-phone a:hover,
.cta-phone a:focus {
    text-decoration: underline;
    opacity: 1;
}

/* Footer - ロゴテキスト削除版 */
.footer {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 80px 0 30px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #d94f3f, #c44232, #d94f3f);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-company {
    max-width: 400px;
}

.footer-company img {
    height: 50px;
    width: auto;
    margin-bottom: 30px;
}

.company-description {
    color: #ecf0f1;
    line-height: 1.7;
    font-size: 1rem;
    margin: 0;
}

.footer-contact h3 {
    color: #d94f3f;
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 30px;
    position: relative;
    padding-bottom: 10px;
}

.footer-contact h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: #d94f3f;
    border-radius: 1px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 15px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-item:last-child {
    border-bottom: none;
}

.contact-icon {
    font-size: 1.2rem;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(217, 79, 63, 0.2);
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-details {
    flex: 1;
}

.contact-details strong {
    color: #d94f3f;
    font-size: 0.9rem;
    font-weight: 600;
    display: block;
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact-details p,
.contact-details address {
    color: #ecf0f1;
    margin: 0;
    font-style: normal;
    line-height: 1.6;
    font-size: 1rem;
}

.contact-details a {
    color: #ecf0f1;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

.contact-details a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #d94f3f;
    transition: width 0.3s ease;
}

.contact-details a:hover,
.contact-details a:focus {
    color: #d94f3f;
    transform: translateX(3px);
}

.contact-details a:hover::after,
.contact-details a:focus::after {
    width: 100%;
}

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

.footer-message h3 {
    color: #d94f3f;
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 25px;
}

.footer-note {
    color: #bdc3c7;
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 30px;
    max-width: 300px;
    margin-left: auto;
    margin-right: auto;
}

.contact-emphasis {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
}

.phone-highlight,
.email-highlight {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
    padding: 12px 20px;
    background: rgba(217, 79, 63, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(217, 79, 63, 0.3);
    transition: all 0.3s ease;
    min-width: 220px;
    justify-content: center;
}

.phone-highlight:hover,
.email-highlight:hover {
    background: rgba(217, 79, 63, 0.2);
    border-color: rgba(217, 79, 63, 0.5);
    transform: translateY(-2px);
}

.phone-icon,
.email-icon {
    font-size: 1.1rem;
    color: #d94f3f;
}

.phone-highlight a,
.email-highlight a {
    color: #ecf0f1;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

.phone-highlight:hover a,
.email-highlight:hover a {
    color: #d94f3f;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-bottom p {
    color: #bdc3c7;
    margin: 0;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.footer-links a {
    color: #bdc3c7;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-links a:hover,
.footer-links a:focus {
    color: #d94f3f;
}

.footer-links .separator {
    color: #7f8c8d;
    font-size: 0.8rem;
}

/* Animation classes for scroll effects */
.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.feature-item,
.benefit-item,
.problem-item,
.solution-item,
.durability-item {
    opacity: 0;
    transform: translateY(30px);
}

/* Loading States */
.problem-item.loading,
.solution-item.loading,
.benefit-item.loading,
.durability-item.loading {
    opacity: 0.6;
    pointer-events: none;
}

.problem-item.loading::after,
.solution-item.loading::after,
.benefit-item.loading::after,
.durability-item.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #d94f3f;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    transform: translate(-50%, -50%);
    z-index: 10;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .contact-buttons {
        gap: 20px;
    }
    
    .contact-btn {
        min-width: 280px;
        padding: 25px 20px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .header-content {
        flex-direction: column;
        gap: 15px;
    }

    .nav ul {
        flex-direction: column;
        gap: 15px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .features {
        padding: 60px 0;
    }

    .features .section-header {
        margin-bottom: 60px;
    }

    .features .section-header h2 {
        font-size: 2rem;
    }

    .features-grid {
        gap: 60px;
    }

    .feature-item,
    .feature-item.feature-reverse {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .feature-item.feature-reverse .feature-image,
    .feature-item.feature-reverse .feature-content {
        order: unset;
    }

    .feature-image {
        height: 280px;
    }

    .feature-content h3 {
        font-size: 1.6rem;
    }

    .feature-content h3::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .feature-content p {
        font-size: 1rem;
        text-align: center;
    }

    .durability-section {
        padding: 50px 30px;
        margin-top: 40px;
    }

    .durability-title {
        font-size: 1.8rem;
        margin-bottom: 40px;
    }

    .durability-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .durability-item {
        padding: 40px 30px;
    }

    .problem-solution {
        padding: 60px 0;
    }

    .problem-solution .section-header {
        margin-bottom: 60px;
    }

    .problem-solution .section-header h2 {
        font-size: 2rem;
    }

    .problem-solution-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        margin-bottom: 60px;
    }

    .problem-item {
        padding: 35px 25px;
    }

    .problem-icon-placeholder {
        width: 70px;
        height: 70px;
        font-size: 1.6rem;
    }

    .solution-content {
        padding: 40px 30px;
    }

    .solution-title {
        font-size: 1.8rem;
        margin-bottom: 40px;
    }

    .solution-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .solution-image {
        height: 200px;
    }

    .solution-arrow {
        margin: 40px 0;
    }

    .arrow-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }

    .benefits {
        padding: 60px 0;
    }

    .benefits-grid {
        grid-template-columns: 1fr !important;
    }

    .benefit-item {
        padding: 30px 20px !important;
    }

    .cases {
        padding: 60px 0;
    }

    .cases .section-header {
        margin-bottom: 60px;
    }

    .cases .section-header h2 {
        font-size: 2rem;
    }

    .carousel-wrapper {
        margin-bottom: 40px;
    }

    .card {
        flex-direction: column;
        width: 100%;
        max-width: 100%;
        height: auto;
        min-height: 500px;
    }

    .card-image {
        flex: 0 0 200px;
        width: 100%;
        height: 200px;
    }

    .card-text {
        flex: 1;
        width: 100%;
        height: auto;
        min-height: 300px;
        padding: 24px 20px;
        text-align: center;
    }

    .card-text h3 {
        font-size: 1.5rem;
        max-height: none;
        -webkit-line-clamp: none;
    }

    .card-text p {
        -webkit-line-clamp: 3;
    }

    .card-link {
        justify-content: center;
    }

    .carousel-prev, .carousel-next {
        width: 44px;
        height: 44px;
        font-size: 1.8rem;
    }

    .cases-cta {
        margin-top: 60px;
    }

    .cases-btn {
        padding: 15px 28px;
        font-size: 1rem;
    }

    .contact-section {
        padding: 60px 0;
    }

    .contact-section .section-header {
        margin-bottom: 60px;
    }

    .contact-section .section-header h2 {
        font-size: 2rem;
    }

    .contact-buttons {
        flex-direction: column;
        gap: 25px;
        max-width: 400px;
    }
    
    .contact-btn {
        min-width: auto;
        max-width: none;
    }

    .contact-info {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .contact-info-item {
        padding: 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 50px;
        text-align: center;
    }

    .footer-company {
        max-width: 100%;
    }

    .contact-info {
        max-width: 400px;
        margin: 0 auto;
    }

    .contact-item {
        text-align: left;
    }

    .contact-emphasis {
        max-width: 300px;
        margin: 0 auto;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.8rem; }
    h3 { font-size: 1.3rem; }
    section {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .hero {
        height: 90vh;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .btn-large {
        padding: 12px 24px;
        font-size: 1rem;
    }

    .features {
        padding: 50px 0;
    }

    .features .section-header h2 {
        font-size: 1.8rem;
    }

    .features .section-subtitle {
        font-size: 1.1rem;
    }

    .features-grid {
        gap: 50px;
    }

    .feature-item {
        padding: 15px 0;
    }

    .feature-image {
        height: 250px;
    }

    .feature-content h3 {
        font-size: 1.4rem;
        margin-bottom: 20px;
    }

    .feature-content p {
        font-size: 0.95rem;
        line-height: 1.7;
    }

    .placeholder-icon {
        font-size: 3rem;
    }

    .placeholder-content p {
        font-size: 0.9rem;
    }

    .durability-section {
        padding: 40px 20px;
        border-radius: 15px;
    }

    .durability-title {
        font-size: 1.6rem;
    }

    .durability-item {
        padding: 35px 25px;
    }

    .durability-item h4 {
        font-size: 1.2rem;
    }

    .durability-item p {
        font-size: 0.95rem;
        text-align: center;
    }

    .icon-circle {
        width: 60px;
        height: 60px;
        font-size: 1.4rem;
    }

    .problem-solution .section-header h2 {
        font-size: 1.8rem;
    }

    .problem-solution .section-subtitle {
        font-size: 1.1rem;
    }

    .problem-item {
        padding: 30px 20px;
    }

    .problem-icon-placeholder {
        width: 60px;
        height: 60px;
        font-size: 1.4rem;
    }

    .problem-item h3 {
        font-size: 1.2rem;
    }

    .solution-content {
        padding: 30px 20px;
        border-radius: 15px;
    }

    .solution-title {
        font-size: 1.6rem;
    }

    .solution-item h4 {
        font-size: 1.2rem;
    }

    .solution-image {
        height: 180px;
    }

    .cases .section-header h2 {
        font-size: 1.8rem;
    }

    .cases .section-subtitle {
        font-size: 1.1rem;
    }

    .card {
        min-height: 450px;
    }

    .card-image {
        height: 180px;
    }

    .card-text {
        min-height: 270px;
        padding: 20px 16px;
    }

    .card-text h3 {
        font-size: 1.3rem;
    }

    .carousel-prev, .carousel-next {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }

    .carousel-prev {
        left: 5px;
    }

    .carousel-next {
        right: 5px;
    }

    .cases-cta {
        margin-top: 50px;
    }

    .cases-btn {
        padding: 12px 24px;
        font-size: 0.95rem;
        gap: 8px;
    }

    .contact-buttons {
        gap: 20px;
    }
    
    .contact-btn {
        padding: 20px 15px;
    }

    .btn-icon-wrapper {
        width: 55px;
        height: 55px;
        margin-right: 12px;
    }

    .btn-icon {
        font-size: 1.3rem;
    }

    .btn-content h3 {
        font-size: 1.1rem;
    }

    .btn-content p {
        font-size: 0.85rem;
    }

    .btn-arrow {
        font-size: 1.3rem;
        margin-left: 10px;
    }

    .contact-info-item {
        padding: 18px 15px;
    }

    .info-icon {
        font-size: 1.3rem;
        margin-right: 12px;
    }

    .info-content strong {
        font-size: 0.9rem;
    }

    .info-content p {
        font-size: 0.85rem;
    }

    .footer {
        padding: 50px 0 20px;
    }

    .footer-content {
        gap: 40px;
    }

    .footer-contact h3,
    .footer-message h3 {
        font-size: 1.2rem;
        margin-bottom: 20px;
    }

    .contact-item {
        padding: 12px 0;
        gap: 12px;
    }

    .contact-icon {
        font-size: 1rem;
        width: 20px;
        height: 20px;
    }

    .contact-details strong {
        font-size: 0.8rem;
    }

    .contact-details p,
    .contact-details address {
        font-size: 0.9rem;
    }

    .footer-note {
        font-size: 0.9rem;
        max-width: 100%;
    }

    .phone-highlight,
    .email-highlight {
        padding: 10px 15px;
        min-width: 200px;
    }

    .phone-highlight a,
    .email-highlight a {
        font-size: 1rem;
    }

    .footer-links {
        justify-content: center;
    }

    .footer-links a {
        font-size: 0.8rem;
    }

    .faq-question {
        padding: 20px;
        font-size: 1rem;
    }

    .faq-answer p {
        padding: 0 20px 20px;
    }

    section {
        padding: 50px 0;
    }
}

/* Focus and Accessibility */
*:focus {
    outline: 2px solid #d94f3f;
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .carousel {
        transition: none;
    }

    .card,
    .card-image img,
    .carousel-prev,
    .carousel-next,
    .cases-btn,
    .feature-item,
    .feature-image,
    .image-placeholder,
    .durability-item,
    .icon-circle,
    .problem-item,
    .solution-content,
    .solution-item,
    .arrow-icon,
    .benefit-item,
    .contact-btn {
        transition: none;
        animation: none;
    }

    .card.loading::after,
    .cases-btn.loading::after,
    .feature-image.loading::after,
    .solution-image.loading::after,
    .problem-item.loading::after,
    .solution-item.loading::after,
    .benefit-item.loading::after,
    .durability-item.loading::after {
        animation: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn-primary {
        border: 2px solid;
    }

    .btn-secondary {
        border: 2px solid;
    }

    .card {
        border: 2px solid #333;
    }

    .card:focus {
        outline: 3px solid #d94f3f;
    }

    .cases-btn {
        border: 2px solid;
    }

    .carousel-prev, .carousel-next {
        border: 2px solid white;
    }

    .image-placeholder {
        border-width: 3px;
        border-style: solid;
    }

    .feature-content h3::after,
    .durability-title::after {
        background: #d94f3f;
    }

    .durability-item {
        border: 2px solid #333;
    }

    .problem-item,
    .solution-content {
        border: 2px solid #333;
    }

    .problem-icon-placeholder {
        border: 2px solid;
    }

    .solution-image {
        border: 2px solid #333;
    }

    .benefit-item {
        border: 2px solid #333 !important;
    }

    .contact-btn {
        border: 2px solid #333;
    }

    .contact-info-item {
        border: 2px solid #d94f3f;
    }

    .faq-item {
        border: 2px solid #333;
    }
}

/* Print styles */
@media print {
    .features,
    .problem-solution,
    .benefits,
    .cases,
    .contact-section,
    .faq,
    .cta-section {
        background: white;
        padding: 40px 0;
    }

    .features::before,
    .features::after,
    .problem-solution::before,
    .problem-solution::after,
    .benefits::before,
    .cases::before,
    .cases::after,
    .contact-section::before,
    .contact-section::after,
    .faq::before,
    .footer::before {
        display: none;
    }

    .feature-item,
    .problem-item,
    .benefit-item,
    .durability-item,
    .solution-item {
        page-break-inside: avoid;
        opacity: 1;
        transform: none;
    }

    .image-placeholder,
    .solution-image {
        border-color: #333;
    }

    .carousel-wrapper {
        overflow: visible;
        box-shadow: none;
    }

    .carousel {
        display: block;
    }

    .carousel-item {
        display: block;
        page-break-inside: avoid;
        margin-bottom: 20px;
    }

    .card {
        width: 100%;
        height: auto;
        min-height: auto;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
        page-break-inside: avoid;
    }

    .carousel-prev,
    .carousel-next {
        display: none;
    }

    .cases-btn {
        display: none;
    }
}