/* ========================================
   かいごのスキマ - LP スタイルシート
   ======================================== */

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.8;
    color: #1f2937;
    background-color: #fff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: #d1fae5;
    color: #065f46;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

/* Variables */
:root {
    --color-green-50: #ecfdf5;
    --color-green-100: #d1fae5;
    --color-green-500: #22c55e;
    --color-green-600: #16a34a;
    --color-green-700: #15803d;
    --color-green-800: #166534;
    --color-orange-300: #fdba74;
    --color-orange-400: #fb923c;
    --color-orange-500: #f97316;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    --font-serif: 'Noto Serif JP', serif;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
}

/* Utility Classes */
.text-green {
    color: var(--color-green-600);
}

.sp-only {
    display: inline;
}

.pc-only {
    display: none;
}

@media (min-width: 768px) {
    .sp-only {
        display: none;
    }
    .pc-only {
        display: inline;
    }
}

/* ========================================
   Navigation
   ======================================== */
.nav {
    position: fixed;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-logo-icon {
    width: 40px;
    height: 40px;
    background: var(--color-green-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-green-600);
}

.nav-logo-text {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-gray-800);
}

@media (min-width: 768px) {
    .nav-logo-text {
        font-size: 1.5rem;
    }
}

.nav-links {
    display: none;
    align-items: center;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .nav-links {
        display: flex;
    }
}

.nav-link {
    color: var(--color-gray-600);
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--color-green-600);
}

.nav-cta {
    display: none;
    background: var(--color-orange-400);
    color: #fff;
    padding: 0.625rem 1.5rem;
    border-radius: 9999px;
    font-weight: 700;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.nav-cta:hover {
    background: var(--color-orange-500);
    transform: scale(1.05);
}

@media (min-width: 1024px) {
    .nav-cta {
        display: inline-block;
    }
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-gray-600);
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

@media (min-width: 1024px) {
    .nav-toggle {
        display: none;
    }
}

.nav-mobile {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: #fff;
    border-top: 1px solid var(--color-gray-100);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 1rem 1.5rem;
}

.nav-mobile.active {
    display: block;
}

.nav-mobile-link {
    display: block;
    padding: 0.75rem;
    color: var(--color-gray-600);
    font-weight: 500;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
}

.nav-mobile-link:hover {
    color: var(--color-green-600);
    background: var(--color-green-50);
}

.nav-mobile-cta {
    display: block;
    margin-top: 1rem;
    padding: 0.75rem;
    background: var(--color-orange-400);
    color: #fff;
    text-align: center;
    border-radius: 0.5rem;
    font-weight: 700;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

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

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.7) 50%, transparent 100%);
}

@media (max-width: 767px) {
    .hero-overlay {
        background: linear-gradient(to bottom, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.8) 100%);
    }
}

.hero-content {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .hero-content {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .hero-content {
        padding: 0 2rem;
    }
}

.hero-inner {
    max-width: 640px;
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-block;
    padding: 0.25rem 1rem;
    margin-bottom: 1.5rem;
    background: var(--color-green-100);
    color: var(--color-green-800);
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-gray-800);
    line-height: 1.3;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 3.75rem;
    }
}

.hero-subtitle {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-gray-700);
    line-height: 1.8;
    margin-bottom: 1rem;
}

@media (min-width: 768px) {
    .hero-subtitle {
        font-size: 1.5rem;
    }
}

.hero-description {
    color: var(--color-gray-600);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

@media (min-width: 640px) {
    .hero-cta {
        flex-direction: row;
    }
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 9999px;
    font-weight: 700;
    font-size: 1.125rem;
    text-align: center;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--color-orange-400);
    color: #fff;
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    background: var(--color-orange-500);
    transform: translateY(-2px);
}

.btn-secondary {
    background: #fff;
    color: var(--color-green-700);
    border: 2px solid var(--color-green-600);
}

.btn-secondary:hover {
    background: var(--color-gray-50);
}

/* ========================================
   Section Common Styles
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header-left {
    text-align: left;
}

.section-label {
    display: block;
    color: var(--color-green-600);
    font-weight: 700;
    letter-spacing: 0.1em;
    font-size: 0.875rem;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 1.875rem;
    font-weight: 500;
    color: var(--color-gray-800);
    line-height: 1.4;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.25rem;
    }
}

.section-title-left {
    font-family: var(--font-serif);
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--color-gray-800);
    margin-top: 0.5rem;
}

.section-line {
    height: 4px;
    width: 80px;
    background: var(--color-orange-300);
    margin: 1rem auto 0;
}

.section-line-left {
    margin-left: 0;
}

/* ========================================
   Problems Section
   ======================================== */
.problems {
    padding: 5rem 0;
    background: var(--color-gray-50);
}

.problems-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .problems-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .problems-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.problem-card {
    background: #fff;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    border-bottom: 4px solid var(--color-orange-300);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: box-shadow 0.3s ease;
}

.problem-card:hover {
    box-shadow: var(--shadow-md);
}

.problem-icon {
    width: 64px;
    height: 64px;
    background: #fff7ed;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.problem-icon i {
    font-size: 1.5rem;
    color: var(--color-orange-400);
}

.problem-text {
    color: var(--color-gray-700);
    font-weight: 500;
    line-height: 1.6;
}

/* ========================================
   Concept Section
   ======================================== */
.concept {
    padding: 6rem 0;
    background: var(--color-green-50);
}

.concept-grid {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

@media (min-width: 1024px) {
    .concept-grid {
        flex-direction: row;
        align-items: center;
    }
}

.concept-image {
    flex: 1;
}

.concept-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 1rem;
    box-shadow: var(--shadow-xl);
}

@media (min-width: 1024px) {
    .concept-image img {
        height: 400px;
    }
}

.concept-content {
    flex: 1;
}

.concept-title {
    font-family: var(--font-serif);
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--color-gray-800);
    line-height: 1.4;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .concept-title {
        font-size: 2.25rem;
    }
}

.concept-lead {
    color: var(--color-gray-700);
    font-size: 1.125rem;
    line-height: 2;
    margin-bottom: 1.5rem;
}

.concept-text {
    color: var(--color-gray-600);
    line-height: 2;
    margin-bottom: 1.5rem;
}

/* Concept Representative */
.concept-representative {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0;
    padding: 1rem;
    background: #fff;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-green-100);
}

.concept-rep-image {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-green-100);
    flex-shrink: 0;
}

.concept-rep-info {
    flex: 1;
}

.concept-rep-title {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 1rem;
    color: var(--color-gray-800);
    margin-bottom: 0.25rem;
}

.concept-rep-company {
    font-size: 0.75rem;
    color: var(--color-gray-500);
    line-height: 1.4;
}

.concept-badges {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.concept-badge {
    background: #fff;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-green-100);
    text-align: center;
}

.badge-label {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-bottom: 0.25rem;
}

.badge-value {
    font-weight: 700;
    color: var(--color-green-800);
}

/* ========================================
   Features Section
   ======================================== */
.features {
    padding: 5rem 0;
    background: #fff;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.feature-icon {
    width: 96px;
    height: 96px;
    background: var(--color-green-500);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-icon i {
    font-size: 2.5rem;
    color: #fff;
}

.feature-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-gray-800);
    margin-bottom: 1rem;
}

.feature-text {
    color: var(--color-gray-600);
    line-height: 1.8;
}

/* ========================================
   Achievements Section
   ======================================== */
.achievements {
    padding: 5rem 0;
    background: var(--color-gray-50);
}

.achievements-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .achievements-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.achievement-card {
    background: #fff;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: box-shadow 0.3s ease;
}

.achievement-card:hover {
    box-shadow: var(--shadow-xl);
}

.achievement-image {
    height: 192px;
    overflow: hidden;
}

.achievement-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.achievement-content {
    padding: 1.5rem;
}

.achievement-title {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--color-gray-800);
    margin-bottom: 0.5rem;
}

.achievement-voice {
    background: var(--color-green-50);
    padding: 0.75rem;
    border-radius: 0.5rem;
    margin-top: 0.5rem;
}

.achievement-voice p {
    color: var(--color-green-800);
    font-size: 0.875rem;
    font-style: italic;
    font-weight: 500;
}

/* ========================================
   Flow & Price Section
   ======================================== */
.flow-price {
    padding: 5rem 0;
    background: #fff;
}

.flow-price-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
}

@media (min-width: 1024px) {
    .flow-price-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Price Section */
.price-card {
    background: #fff;
    border: 1px solid var(--color-gray-200);
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    padding: 1.5rem;
}

@media (min-width: 1024px) {
    .price-card {
        padding: 2rem;
    }
}

.price-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--color-gray-100);
}

.price-item-last {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.price-name {
    font-weight: 700;
    color: var(--color-gray-800);
    font-size: 1.125rem;
}

.price-desc {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.price-amount {
    text-align: right;
}

.price-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-green-600);
}

.price-unit {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-left: 0.25rem;
}

.price-tax {
    display: block;
    font-size: 0.75rem;
    color: var(--color-gray-400);
}

.price-estimate {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-gray-600);
}

.price-note {
    margin-top: 2rem;
    background: #fff7ed;
    padding: 1rem;
    border-radius: 0.5rem;
}

.price-note p {
    font-size: 0.875rem;
    color: #9a3412;
    line-height: 1.6;
}

/* Flow Section */
.flow-timeline {
    position: relative;
    padding-left: 1.5rem;
}

.flow-timeline::before {
    content: '';
    position: absolute;
    left: 16px;
    top: 16px;
    bottom: 16px;
    width: 2px;
    background: var(--color-green-200);
}

.flow-item {
    position: relative;
    padding-left: 2.5rem;
    margin-bottom: 2rem;
}

.flow-item:last-child {
    margin-bottom: 0;
}

.flow-step {
    position: absolute;
    left: -8px;
    top: 0;
    width: 32px;
    height: 32px;
    background: var(--color-green-500);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    box-shadow: var(--shadow-md);
    z-index: 1;
}

.flow-title {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--color-gray-800);
    margin-bottom: 0.25rem;
}

.flow-desc {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

/* ========================================
   FAQ Section
   ======================================== */
.faq {
    padding: 5rem 0;
    background: #fff;
}

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

.faq-item {
    margin-bottom: 1rem;
    border: 1px solid var(--color-gray-200);
    border-radius: 0.75rem;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1.25rem;
    background: var(--color-gray-50);
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-800);
    transition: background 0.2s ease;
}

.faq-question:hover {
    background: var(--color-gray-100);
}

.faq-question i {
    color: var(--color-green-600);
    transition: transform 0.3s ease;
}

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

.faq-answer {
    display: none;
    padding: 1.25rem;
    background: #fff;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-answer p {
    color: var(--color-gray-600);
    line-height: 1.8;
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    padding: 5rem 0;
    background: var(--color-gray-800);
}

.contact-title {
    font-family: var(--font-serif);
    font-size: 1.875rem;
    font-weight: 700;
    color: #fff;
    text-align: center;
    margin-bottom: 1.5rem;
}

.contact-desc {
    color: var(--color-gray-400);
    text-align: center;
    margin-bottom: 3rem;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .contact-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    border-radius: 1rem;
    transition: all 0.3s ease;
}

.contact-card i {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    transition: transform 0.3s ease;
}

.contact-card:hover i {
    transform: scale(1.1);
}

.contact-phone {
    background: #fff;
    color: var(--color-gray-800);
}

.contact-phone:hover {
    background: var(--color-gray-100);
}

.contact-phone i {
    color: var(--color-green-600);
}

.contact-email {
    background: var(--color-green-600);
    color: #fff;
}

.contact-email:hover {
    background: var(--color-green-700);
}

.contact-email .contact-value {
    font-size: 1rem;
}

.contact-form {
    background: var(--color-orange-400);
    color: #fff;
}

.contact-form:hover {
    background: var(--color-orange-500);
}

.contact-label {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-bottom: 0.25rem;
}

.contact-value {
    font-size: 1.25rem;
    font-weight: 700;
}

.contact-phone .contact-value {
    font-size: 1.5rem;
    font-family: sans-serif;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-400);
    padding: 3rem 0;
    border-top: 1px solid var(--color-gray-800);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #fff;
    margin-bottom: 1rem;
}

.footer-logo i {
    color: var(--color-green-500);
}

.footer-logo span {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-company {
    font-size: 0.875rem;
    line-height: 1.6;
}

.footer-nav-title {
    color: #fff;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-nav-list {
    list-style: none;
}

.footer-nav-list li {
    margin-bottom: 0.5rem;
}

.footer-nav-list a {
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-nav-list a:hover {
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid var(--color-gray-800);
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.75rem;
}