/* ----------------------------------------------------------------
   Design Tokens
---------------------------------------------------------------- */
:root {
    /* Azure & Deep Navy Palette */
    --color-primary: #004aad;
    /* Trustworthy Blue */
    --color-primary-dark: #002d6a;
    --color-secondary: #f0f7ff;
    --color-accent: #00c2ff;
    /* Cutting-edge Cyan */
    --color-text-main: #1a1a1a;
    --color-text-body: #4a4a4a;
    --color-white: #ffffff;
    --color-glass: rgba(255, 255, 255, 0.8);

    /* Spacing */
    --section-padding: 60px;
    --container-width: 1200px;
    --radius-main: 24px;

    /* Animation */
    --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    background-color: var(--color-white);
    color: var(--color-text-main);
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-smooth);
}

ul {
    list-style: none;
}

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

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

/* ----------------------------------------------------------------
   Loading Animation
---------------------------------------------------------------- */
#loading-screen {
    position: fixed;
    inset: 0;
    background: var(--color-white);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.loader-logo {
    font-size: 2rem;
    font-weight: 700;
    max-width: 200px;
    color: var(--color-primary);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    animation: pulse 1.5s infinite ease-in-out;
}

.loader-bar {
    width: 200px;
    height: 2px;
    background: #eee;
    position: relative;
    overflow: hidden;
    border-radius: 2px;
}

.loader-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--color-primary);
    animation: loading 1.5s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.5;
    }

    50% {
        opacity: 1;
    }
}

@keyframes loading {
    to {
        left: 100%;
    }
}

body.loaded #loading-screen {
    opacity: 0;
    visibility: hidden;
}

/* ----------------------------------------------------------------
   Components
---------------------------------------------------------------- */
section[id] {
    scroll-margin-top: 100px;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 32px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 40px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    gap: 10px;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 10px 20px rgba(0, 74, 173, 0.15);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(0, 74, 173, 0.25);
}

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

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

.gradient-bg-wrapper {
    background: linear-gradient(to bottom, #ffffff 0%, #bfe0ffa1 100%);
    width: 100%;
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: var(--transition-smooth);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ----------------------------------------------------------------
   Header
---------------------------------------------------------------- */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 15px 0px 24px 0px;
    transition: var(--transition-smooth);
}

header.scrolled {
    padding: 16px 0;
    background: var(--color-glass);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-banner {
    width: 192px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

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

.nav-links a {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-text-body);
}

.nav-links a:hover {
    color: var(--color-primary);
}

/* --- ハンバーガーメニューボタンのスタイル（PCでは非表示） --- */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1100;
}

.menu-toggle .bar {
    width: 100%;
    height: 2px;
    background-color: var(--color-primary-dark);
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* モバイル用メニュー内のボタン非表示用 */
.mobile-action {
    display: none;
}

/* ----------------------------------------------------------------
   Hero Section
---------------------------------------------------------------- */
.hero {
    padding-top: 60px;
    padding-bottom: 60px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, rgba(0, 194, 255, 0.05) 0%, rgba(0, 74, 173, 0.05) 100%);
    filter: blur(100px);
    z-index: -1;
    border-radius: 50%;
}

.hero-content {
    max-width: 100%;
    text-align: center;
    margin: 0 auto;
}

.hero h1 {
    font-size: clamp(2.2rem, 4vw, 3.4rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary-dark);
    margin-bottom: 32px;
    letter-spacing: -0.03em;
}

.hero h1 span {
    color: var(--color-primary);
    position: relative;
    display: inline-block;
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-text-body);
    margin-bottom: 48px;
}

.hero-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* ----------------------------------------------------------------
   Trusted By (Achievements)
---------------------------------------------------------------- */
.achievements {
    padding: 80px 0;
    border-bottom: 1px solid #f0f0f0;
}

.achievement-title {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-body);
    margin-bottom: 40px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.logo-marquee {
    display: flex;
    overflow: hidden;
    user-select: none;
    gap: 80px;
}

.logo-track {
    display: flex;
    gap: 80px;
    animation: marquee 30s linear infinite;
    align-items: center;
}

.logo-track div {
    font-size: 1.2rem;
    font-weight: 700;
    color: #ccc;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-track svg {
    width: 30px;
    height: 30px;
    fill: currentColor;
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

/* ----------------------------------------------------------------
   Features Section
---------------------------------------------------------------- */
.features {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 80px;
}

.section-tag {
    display: inline-block;
    padding: 8px 20px;
    background: var(--color-secondary);
    color: var(--color-primary);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--color-primary-dark);
    margin-bottom: 24px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--color-white);
    padding: 48px;
    border-radius: var(--radius-main);
    border: 1px solid rgba(0, 0, 0, 0.02);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.06);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--color-secondary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    margin-bottom: 32px;
}

.feature-icon svg {
    width: 32px;
    height: 32px;
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 16px;
    color: var(--color-primary-dark);
}

.feature-card p {
    color: var(--color-text-body);
    font-size: 1rem;
}

/* ----------------------------------------------------------------
   Pricing Section
---------------------------------------------------------------- */
.pricing {
    padding: var(--section-padding) 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    align-items: stretch;
}

.price-card {
    padding: 60px 40px;
    border-radius: var(--radius-main);
    border: 1px solid #f0f0f0;
    text-align: center;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    background: var(--color-white);
}

.price-card.featured {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    position: relative;
    box-shadow: 0 30px 60px rgba(0, 74, 173, 0.2);
    z-index: 2;
}

.price-card.featured .price-name,
.price-card.featured .price-amount,
.price-card.featured .price-amount span,
.price-card.featured .price-feature-item {
    color: var(--color-white);
}

.price-card.featured .btn {
    background: var(--color-white);
    color: var(--color-primary);
}

.price-name {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--color-primary-dark);
}

.price-amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 40px;
}

.price-amount span {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--color-text-body);
}

.price-tax-inc {
    display: block;
    font-size: 0.65rem;
    text-align: right;
    font-weight: 400;
    color: #8a8a8a;
    margin-top: -5px;
    letter-spacing: 0.01em;
}

.price-card.featured .price-tax-inc {
    color: rgba(255, 255, 255, 0.6);
}

.price-features {
    margin-bottom: 48px;
    text-align: left;
    flex-grow: 1;
}

.price-feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 0.95rem;
    color: var(--color-text-body);
}

.price-feature-item svg {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
    flex-shrink: 0;
}

/* 料金プランのアコーディオン */
.price-accordion-toggle {
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.price-accordion-toggle strong {
    flex-grow: 1;
    text-align: left;
}

.price-accordion-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    margin-left: 8px;
}

.price-accordion-arrow svg {
    width: 16px;
    height: 16px;
    color: var(--color-accent) !important;
}

.price-card.featured .price-accordion-arrow svg {
    color: var(--color-white) !important;
}

.price-accordion-toggle.active .price-accordion-arrow {
    transform: rotate(180deg);
}

.price-accordion-content {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease;
}

.price-accordion-content.open {
    max-height: 1000px;
    opacity: 1;
}

.nested-price-features {
    margin-left: 12px;
    padding-left: 16px;
    border-left: 2px solid rgba(0, 74, 173, 0.1);
    margin-top: 8px;
    margin-bottom: 16px;
    list-style: none;
}

.price-card.featured .nested-price-features {
    border-left-color: rgba(255, 255, 255, 0.2);
}

.nested-price-features .price-feature-item {
    margin-bottom: 12px;
    font-size: 0.9rem;
}

.nested-price-features .price-feature-item:last-child {
    margin-bottom: 0;
}

/* Recommended plan badge */
.recommended-plan-badge-container {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 12px;
    border-radius: 4px;
}

.recommended-plan-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-white);
    background: linear-gradient(135deg, #f59e0b, #d97706);
    padding: 3px 10px;
    border-radius: 4px;
    margin-left: 8px;
    letter-spacing: 0.04em;
    vertical-align: middle;
    white-space: nowrap;
    animation: optionBadgePulse 2.5s ease-in-out infinite;
}

/* Option Badge & Custom Examples */
.price-option-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-white);
    background: linear-gradient(135deg, #f59e0b, #d97706);
    padding: 3px 10px;
    border-radius: 4px;
    margin-left: 8px;
    letter-spacing: 0.04em;
    vertical-align: middle;
    white-space: nowrap;
    animation: optionBadgePulse 2.5s ease-in-out infinite;
}

@keyframes optionBadgePulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.3);
    }

    50% {
        box-shadow: 0 0 0 6px rgba(245, 158, 11, 0);
    }
}

.price-custom-examples {
    margin-top: 4px;
    margin-left: 32px;
    padding: 10px 14px;
    background: rgba(0, 74, 173, 0.03);
    border-left: 3px solid var(--color-accent);
    border-radius: 0 8px 8px 0;
}

.price-custom-example-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--color-text-body);
    padding: 3px 0;
}

.price-custom-example-item .example-label {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-accent);
    background: rgba(0, 194, 255, 0.1);
    padding: 1px 6px;
    border-radius: 3px;
    white-space: nowrap;
}

.price-custom-example-item .example-text {
    font-size: 0.85rem;
    color: var(--color-text-body);
}

.price-custom-more {
    font-size: 0.75rem;
    color: var(--color-primary);
    font-weight: 600;
    margin-top: 6px;
    padding-left: 2px;
    opacity: 0.8;
}


/* ----------------------------------------------------------------
   Columns Section
---------------------------------------------------------------- */
.columns {
    padding: var(--section-padding) 0;
    background: transparent;
}

.columns-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.column-card {
    background: var(--color-white);
    border-radius: var(--radius-main);
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
    transition: var(--transition-smooth);
    border: 1px solid rgba(0, 74, 173, 0.05);
    display: flex;
    flex-direction: column;
}

.column-card-link {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.column-img-wrapper {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--color-secondary);
}

.column-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.column-content {
    padding: 32px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.column-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.column-date {
    font-size: 0.85rem;
    color: #8a8a8a;
}

.column-category {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-primary);
    background: rgba(0, 74, 173, 0.08);
    padding: 3px 10px;
    border-radius: 4px;
}

.column-title {
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.5;
    color: var(--color-primary-dark);
    margin-bottom: 16px;
    transition: color 0.3s ease;
}

.column-excerpt {
    font-size: 0.95rem;
    color: var(--color-text-body);
    line-height: 1.6;
    margin-bottom: 24px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.column-more {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-primary);
    transition: var(--transition-smooth);
}

.column-more svg {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

/* Hover Effects */
.column-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 74, 173, 0.08);
    border-color: rgba(0, 194, 255, 0.3);
}

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

.column-card:hover .column-title {
    color: var(--color-accent);
}

.column-card:hover .column-more {
    color: var(--color-accent);
}

.column-card:hover .column-more svg {
    transform: translateX(4px);
}

@media (max-width: 768px) {
    .columns-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

/* ----------------------------------------------------------------
   Contact Section
---------------------------------------------------------------- */
.contact {
    padding: var(--section-padding) 0;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.contact-info h2 {
    font-size: 3rem;
    color: var(--color-primary-dark);
    margin-bottom: 32px;
    line-height: 1.2;
}

.contact-info p {
    font-size: 1.1rem;
    color: var(--color-text-body);
    margin-bottom: 40px;
}

.contact-form {
    background: var(--color-white);
    padding: 60px;
    border-radius: var(--radius-main);
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.05);
}

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

.input-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    font-size: 0.9rem;
}

.input-group input,
.input-group textarea,
.input-group select {
    width: 100%;
    padding: 16px;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition-smooth);
}

.input-group input:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(0, 74, 173, 0.05);
}

/* 必須マークおよびエラー表示 */
.required-badge {
    background-color: #e53e3e;
    color: #ffffff;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 8px;
    vertical-align: middle;
    font-weight: bold;
    display: inline-block;
}

.input-group input.is-invalid,
.input-group textarea.is-invalid,
.input-group select.is-invalid {
    border-color: #e53e3e !important;
    background-color: #fffafb;
}

.error-text {
    color: #e53e3e;
    font-size: 0.8rem;
    margin-top: 6px;
    display: block;
    font-weight: 500;
}

/* ----------------------------------------------------------------
   Footer
---------------------------------------------------------------- */
footer {
    background: var(--color-primary-dark);
    color: var(--color-white);
    padding: 80px 0 40px;
}

.footer-main {
    display: grid;
    grid-template-columns: 1.2fr 1.3fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand h2 {
    font-size: 1.8rem;
    margin-bottom: 16px;
    color: var(--color-white);
    font-weight: 700;
}

.footer-brand p {
    opacity: 0.7;
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer-company h3,
.footer-sns h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 0.05em;
    position: relative;
    padding-bottom: 8px;
}

.footer-company h3::after,
.footer-sns h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 30px;
    height: 2px;
    background: var(--color-accent);
}

.footer-company p {
    margin-bottom: 12px;
    font-size: 0.95rem;
    opacity: 0.8;
    line-height: 1.6;
}

.footer-company .company-name {
    font-weight: 700;
    opacity: 1;
}

.footer-company a {
    color: var(--color-accent);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.footer-company a:hover {
    color: var(--color-white);
    text-decoration: underline;
}

/* SNSリンク */
.sns-icons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.sns-icon-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--color-white);
    transition: var(--transition-smooth);
}

.sns-icon-link:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 194, 255, 0.2);
}

.sns-icon-link svg,
.sns-icon-link img {
    width: 20px;
    height: 20px;
}

/* プロモーションエリア */
.footer-promo {
    margin-bottom: 60px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.promo-title {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 24px;
    opacity: 0.9;
    letter-spacing: 0.1em;
}

.promo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.promo-banner {
    display: block;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 24px;
    transition: var(--transition-smooth);
    color: var(--color-white);
}

.promo-banner:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.25);
}

.promo-banner-content {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.promo-image-placeholder {
    width: 100%;
    height: 90px;
    background: linear-gradient(135deg, rgba(230, 230, 230, 0.9) 0%, rgba(0, 194, 255, 0.1) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.05em;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.promo-service-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-white);
}

.promo-service-desc {
    font-size: 0.85rem;
    opacity: 0.7;
    line-height: 1.5;
}

/* コピーライト */
.footer-copyright {
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.6;
    letter-spacing: 0.02em;
}

/* ----------------------------------------------------------------
   Alert Modal
---------------------------------------------------------------- */
/* success */
/* ----------------------------------------------------------------
   Alert Modal (Dialogs)
---------------------------------------------------------------- */
.dialog {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    animation: fadeIn-2 0.3s;
    backdrop-filter: blur(4px);
}

.dialog .dialog-content {
    background-color: var(--color-white);
    border-radius: var(--radius-main);
    box-shadow: 0 20px 50px rgba(0, 74, 173, 0.15);
    overflow: hidden;
    width: 90%;
    max-width: 480px;
    margin: 12% auto;
    animation: slideInFromTop-2 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    border: 1px solid rgba(0, 74, 173, 0.05);
}

.dialog .card-header {
    background-color: #fafbfc;
    padding: 36px 24px 16px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    text-align: center;
}

.dialog .card-icon {
    font-size: 28px;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--color-white);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.05);
}

/* 成功時：グリーン */
#dialog_success .card-icon {
    background-color: #10b981;
}
#dialog_success .card-title {
    color: var(--color-primary-dark);
}

/* エラー時：レッド */
#dialog_error .card-icon {
    background-color: #ef4444;
}
#dialog_error .card-title {
    color: #b91c1c;
}

.dialog .card-title {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.4;
}

.dialog .card-body {
    padding: 16px 32px 32px 32px;
    text-align: center;
}

.dialog .card-body p {
    margin: 0;
    line-height: 1.6;
    color: var(--color-text-body);
    font-size: 1.05rem;
    font-weight: 500;
}

.dialog .card-footer {
    padding: 0 32px 36px 32px;
    text-align: center;
}

.dialog .closeSuccess-btn,
.dialog .closeError-btn {
    color: var(--color-white);
    border: none;
    padding: 12px 40px;
    border-radius: 30px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 12px rgba(0, 74, 173, 0.15);
}

/* 成功時ボタン：青 */
#dialog_success .closeSuccess-btn {
    background-color: var(--color-primary);
}
#dialog_success .closeSuccess-btn:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 74, 173, 0.25);
}

/* エラー時ボタン：赤 */
#dialog_error .closeError-btn {
    background-color: #ef4444;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.15);
}
#dialog_error .closeError-btn:hover {
    background-color: #dc2626;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(239, 68, 68, 0.25);
}

@keyframes fadeIn-2 {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideInFromTop-2 {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }

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

@media (max-width: 768px) {
    .dialog .dialog-content {
        width: 90%;
        margin: 20% auto;
    }

    .dialog .card-title {
        font-size: 1.15rem;
    }

    .dialog .card-body p {
        font-size: 0.95rem;
    }
}

/* ----------------------------------------------------------------
   Responsive
---------------------------------------------------------------- */
@media (max-width: 1024px) {
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .price-card.featured {
        transform: scale(1);
    }

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

    .contact-info {
        text-align: center;
    }
}

@media (max-width: 768px) {
    /* スマホ表示時にヘッダー上のボタンを非表示にし、ハンバーガーを表示 */
    .header-action {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    /* メニュー（リンク集）をドロワー形式に変更 */
    .nav-links {
        display: flex;
        position: fixed;
        top: 0;
        right: -100%; /* 初期状態は画面外に隠す */
        width: 80%;
        height: 100vh;
        background: var(--color-white);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.05);
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        padding: 100px 40px 40px 40px;
        gap: 24px;
        transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 1050;
    }

    /* メニュー展開時 */
    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        font-size: 1.2rem;
        width: 100%;
        padding: 8px 0;
        border-bottom: 1px solid rgba(0, 0, 0, 0.03);
    }

    .mobile-action {
        display: block;
        width: 100%;
        margin-top: 16px;
    }

    .mobile-action a {
        width: 100%;
        text-align: center;
        border: none;
        color: var(--color-white);
        border-bottom: none;
    }

    .mobile-action a:hover {
        color: var(--color-white);
    }

    /* 三本線ボタンのアニメーション（展開時） */
    .menu-toggle.active .bar:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    .menu-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle.active .bar:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    body.menu-open {
        overflow: hidden; /* メニュー表示時は背面のスクロールを禁止 */
    }

    header {
        padding: 16px 0;
    }

    .hero {
        padding-top: 60px;
    }

    .hero-btns {
        flex-direction: column;
    }

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

    .contact-form {
        padding: 40px 24px;
    }

    /* フッターレスポンシブ */
    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-company h3,
    .footer-sns h3 {
        margin-bottom: 16px;
    }

    .promo-grid {
        display: flex;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        gap: 16px;
        padding-bottom: 16px;
        margin-right: -32px;
        padding-right: 32px;
        -webkit-overflow-scrolling: touch;
    }

    .promo-grid::-webkit-scrollbar {
        display: none;
    }

    .promo-banner {
        flex: 0 0 280px;
        scroll-snap-align: start;
    }
}

/* ----------------------------------------------------------------
   News Section
---------------------------------------------------------------- */
.news-section {
    margin-top: 80px;
    /* 固定ヘッダーの高さ分下げる */
    padding: 24px 0 16px;
    border-bottom: 1px solid rgba(0, 74, 173, 0.08);
}

.news-wrapper {
    background: var(--color-white);
    border-radius: 16px;
    padding: 24px 24px 16px 24px;
    box-shadow: 0 4px 20px rgba(0, 74, 173, 0.03);
    border: 1px solid rgba(0, 74, 173, 0.05);
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.news-item {
    display: flex;
    align-items: center;
    padding-bottom: 10px;
    border-bottom: 1px dashed #e2e8f0;
    font-size: 0.95rem;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.news-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

/* 初期状態の非表示アイテム用スタイル */
.news-item.news-item-hidden {
    display: none;
    opacity: 0;
    transform: translateY(-8px);
}

.news-item.news-item-show {
    display: flex;
    animation: slideDown 0.4s forwards cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* バッジのスタイル */
.news-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    width: 100px;
    text-align: center;
    border-radius: 4px;
    margin-right: 16px;
    white-space: nowrap;
}

.badge-maintenance {
    background-color: #fef3c7;
    color: #b45309;
}

.badge-notice {
    background-color: #e0f2fe;
    color: #0369a1;
}

.badge-columns {
    background-color: #dcfce7;
    color: #15803d;
}

/* 日付 */
.news-date {
    font-size: 0.8rem;
    font-weight: 400;
    color: #1e2125;
    margin-right: 24px;
    width: 90px;
    font-family: 'Inter', sans-serif;
    white-space: nowrap;
}

/* タイトルエリア */
.news-title {
    font-size: 0.8rem;
    flex-grow: 1;
    color: var(--color-text-main);
}

.news-text {
    color: var(--color-text-main);
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
    color: var(--color-text-main);
}

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

.news-link-icon {
    opacity: 0;
    transform: translateX(-4px);
    transition: var(--transition-smooth);
}

.news-link:hover .news-link-icon {
    opacity: 1;
    transform: translateX(0);
}

/* もっと見るボタン */
.news-toggle-wrapper {
    display: flex;
    justify-content: center;
    margin-top: 14px;
}

.news-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 24px;
    border-radius: 20px;
    background-color: var(--color-secondary);
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.75rem;
    transition: var(--transition-smooth);
    border: 1px solid rgba(0, 74, 173, 0.1);
}

.news-toggle-btn:hover {
    background-color: #e0f0ff;
    transform: translateY(-1px);
}

.news-toggle-btn svg {
    transition: transform 0.3s ease;
}

.news-toggle-btn.active svg {
    transform: rotate(180deg);
}

/* レスポンシブ */
@media (max-width: 768px) {
    .news-section {
        margin-top: 64px;
        /* モバイルヘッダーの高さに合わせる */
    }

    .news-item {
        flex-wrap: wrap;
        gap: 8px;
        align-items: flex-start;
    }

    .news-badge {
        margin-right: 8px;
    }

    .usecase {
        padding: 80px 0;
    }

    .usecase-tabs-container {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 8px;
        margin-left: -32px;
        margin-right: -32px;
        padding-left: 32px;
        padding-right: 32px;
        -webkit-overflow-scrolling: touch;
    }

    .usecase-tabs-container::-webkit-scrollbar {
        display: none;
        /* スクロールバー非表示 */
    }

    .usecase-tabs {
        padding: 4px;
        border-radius: 30px;
    }

    .usecase-tab-btn {
        min-width: 250px;
        padding: 8px 18px;
        font-size: 0.85rem;
    }

    .usecase-body-columns {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .usecase-text-side h3 {
        font-size: 1.6rem;
    }

    .usecase-desc-lead {
        font-size: 1rem;
    }

    .usecase-desc-detail {
        font-size: 0.9rem;
    }

    .usecase-features-list {
        gap: 16px;
    }

    .usecase-steps-area {
        padding-top: 32px;
    }

    .usecase-steps {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 16px;
        margin-left: -32px;
        margin-right: -32px;
        padding-left: 32px;
        padding-right: 32px;
        -webkit-overflow-scrolling: touch;
        gap: 16px;
    }

    .usecase-steps::-webkit-scrollbar {
        height: 4px;
    }

    .usecase-steps::-webkit-scrollbar-thumb {
        background: rgba(0, 74, 173, 0.15);
        border-radius: 2px;
    }

    .usecase-step {
        min-width: 240px;
    }
}

/* ----------------------------------------------------------------
   UseCase Section (Global Styles - Refactored)
---------------------------------------------------------------- */
.usecase {
    padding: var(--section-padding) 0;
}

.usecase-tabs-container {
    display: flex;
    justify-content: center;
    margin-bottom: 48px;
}

.usecase-tabs {
    display: flex;
    background-color: var(--color-secondary);
    padding: 6px;
    border-radius: 40px;
    gap: 4px;
    width: 90%;
    max-width: 1000px;
}

.usecase-tab-btn {
    padding: 14px 28px;
    border-radius: 30px;
    width: 25%;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-body);
    transition: var(--transition-smooth);
    white-space: nowrap;
}

.usecase-tab-btn:hover {
    color: var(--color-primary);
}

.usecase-tab-btn.active {
    background-color: var(--color-white);
    color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(0, 74, 173, 0.08);
}

.usecase-content-wrapper {
    position: relative;
    min-height: 500px;
    padding: 20px;
    background-color: white;
    border-radius: var(--radius-main);
    border: 1px solid rgba(0, 0, 0, 0.02);
}

.usecase-tab-content {
    display: none;
}

.usecase-tab-content.active {
    display: flex;
    flex-direction: column;
    gap: 56px;
    animation: usecaseFadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes usecaseFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.usecase-body-columns {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 64px;
    align-items: start;
}

.usecase-text-side {
    display: flex;
    flex-direction: column;
}

.usecase-num {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 12px;
    font-family: 'Inter', sans-serif;
    opacity: 0.8;
}

.usecase-text-side h3 {
    font-size: 2rem;
    color: var(--color-primary-dark);
    margin-bottom: 16px;
    line-height: 1.3;
}

.usecase-desc-lead {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-text-main);
    margin-bottom: 16px;
    line-height: 1.5;
}

.usecase-desc-detail {
    color: var(--color-text-body);
    font-size: 0.98rem;
    line-height: 1.7;
}

.usecase-features-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 110px;
}

.usecase-features-list li {
    position: relative;
    padding-left: 32px;
    font-size: 0.95rem;
    color: var(--color-text-body);
    line-height: 1.6;
}

.usecase-features-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 2px;
    color: var(--color-primary);
    font-weight: bold;
    font-size: 1.2rem;
    line-height: 1;
}

.usecase-features-list li strong {
    display: inline-block;
    color: var(--color-text-main);
    font-size: 1.05rem;
    margin-bottom: 4px;
}

.usecase-steps-area {
    border-top: 1px solid rgba(0, 74, 173, 0.08);
    padding-top: 48px;
}

.usecase-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    width: 100%;
}

.usecase-step {
    flex: 1;
    max-width: 320px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    text-align: center;
}

.usecase-steps.steps-2 .usecase-step {
    max-width: 440px;
}

.usecase-step-media-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    background-color: #f8fafc;
    border-radius: 12px;
    border: 1px solid rgba(0, 74, 173, 0.08);
    box-shadow: 0 12px 24px rgba(0, 74, 173, 0.04);
    overflow: hidden;
    transition: var(--transition-smooth);
}

.usecase-step:hover .usecase-step-media-wrapper {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(0, 74, 173, 0.08);
}

.usecase-step-media-wrapper img,
.usecase-step-media-wrapper video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.usecase-step-label {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text-main);
    line-height: 1.4;
}

.usecase-step-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    opacity: 0.5;
    flex-shrink: 0;
}

.usecase-step-arrow svg {
    width: 40px;
    height: 90px;
}

/* UseCase Section Responsive Overrides */
@media (max-width: 768px) {
    .usecase-body-columns {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .usecase-features-list {
        margin-top: 0;
    }

    .usecase-steps {
        flex-direction: column;
        gap: 32px;
    }

    .usecase-step-arrow {
        transform: rotate(90deg);
    }
}

/* ----------------------------------------------------------------
   トップへ戻るボタン
---------------------------------------------------------------- */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: #005fcc;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0.8;
    z-index: 999;
}

.back-to-top:hover {
    background: #003f80;
    transform: translateY(-5px);
    opacity: 1;
}

.back-to-top.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
}

/* ----------------------------------------------------------------
   Article Detail Page Template Styling
---------------------------------------------------------------- */
.article-detail {
    padding: 180px 32px 80px 32px;
    max-width: 800px;
    margin: 0 auto;
}

.article-back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 32px;
    transition: var(--transition-smooth);
}

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

.article-header {
    position: static;
    top: auto;
    width: auto;
    z-index: auto;
    padding: 0;
    transition: none;
    background: none;
    backdrop-filter: none;
    border-bottom: none;
    margin-bottom: 40px;
}

.article-meta-info {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.article-meta-info .category {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-primary);
    background: rgba(0, 74, 173, 0.08);
    padding: 4px 12px;
    border-radius: 4px;
}

.article-meta-info .date {
    font-size: 0.9rem;
    color: #8a8a8a;
}

.article-title {
    font-size: 2.5rem;
    line-height: 1.4;
    color: var(--color-primary-dark);
    font-weight: 700;
}

.article-hero-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-main);
    margin-bottom: 48px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
}

.article-body {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--color-text-main);
}

.article-body p {
    margin-bottom: 28px;
}

.article-body h2 {
    font-size: 1.6rem;
    color: var(--color-primary-dark);
    margin: 56px 0 24px 0;
    padding-left: 16px;
    border-left: 4px solid var(--color-accent);
    line-height: 1.4;
}

.article-body h3 {
    font-size: 1.3rem;
    color: var(--color-primary-dark);
    margin: 40px 0 20px 0;
    line-height: 1.4;
}

.article-body ul, 
.article-body ol {
    margin-bottom: 28px;
    padding-left: 24px;
}

.article-body li {
    margin-bottom: 12px;
}

.article-body blockquote {
    background: var(--color-secondary);
    border-left: 4px solid var(--color-primary);
    padding: 24px;
    border-radius: 0 12px 12px 0;
    margin: 40px 0;
    font-style: italic;
    color: var(--color-text-body);
}

.article-footer {
    margin-top: 64px;
    padding-top: 40px;
    border-top: 1px solid rgba(0, 74, 173, 0.1);
    text-align: center;
}

@media (max-width: 768px) {
    .article-detail {
        padding: 140px 24px 60px 24px;
    }
    
    .article-hero-image {
        margin-bottom: 32px;
    }
    
    .article-title {
        font-size: 1.8rem;
    }
    
    .article-body h2 {
        font-size: 1.4rem;
        margin: 40px 0 20px 0;
    }
}

/* ----------------------------------------------------------------
   Department Use Case Section
---------------------------------------------------------------- */
.department-usecase {
    padding: var(--section-padding) 0;
    background: transparent;
}

.dept-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 48px;
}

.dept-card {
    background: var(--color-white);
    border-radius: var(--radius-main);
    padding: 40px;
    border: 1px solid rgba(0, 0, 0, 0.02);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.dept-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 30px 60px rgba(0, 74, 173, 0.08);
}

.dept-card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
}

.dept-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-secondary);
    color: var(--color-primary);
}

.dept-icon svg {
    width: 24px;
    height: 24px;
}

.dept-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.dept-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.dept-list li {
    font-size: 1.05rem;
    color: var(--color-text-body);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    line-height: 1.5;
}

.dept-list li::before {
    content: "›";
    font-size: 1.35rem;
    line-height: 1.1;
    font-weight: 700;
    color: var(--color-primary);
}

@media (max-width: 992px) {
    .dept-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

/* ----------------------------------------------------------------
   References Section in Column Detail
   ---------------------------------------------------------------- */
.article-references {
    margin-top: 56px;
    padding-top: 32px;
    border-top: 1px dashed rgba(0, 74, 173, 0.15);
    font-size: 0.9rem;
    color: var(--color-text-body);
}

.article-references h4 {
    font-size: 1.05rem;
    color: var(--color-primary-dark);
    margin-bottom: 16px;
    font-weight: 700;
}

.article-references ul {
    list-style-type: none;
    padding-left: 0;
}

.article-references ul li {
    margin-bottom: 16px;
}

.article-references ul li:last-child {
    margin-bottom: 0;
}

.article-references ul li strong {
    color: var(--color-primary-dark);
    display: inline-block;
    margin-bottom: 6px;
}

.article-references ul li ul {
    list-style-type: disc;
    padding-left: 20px;
}

.article-references ul li ul li {
    margin-bottom: 6px;
}

.article-references ul li ul li a {
    color: var(--color-primary);
    text-decoration: underline;
    transition: var(--transition-smooth);
}

.article-references ul li ul li a:hover {
    color: var(--color-primary-dark);
}