@charset "UTF-8";

/* ==========================================================================
   Variables
   ========================================================================== */
:root {
    /* Colors */
    --c-primary: #101D38;
    --c-primary-light: #162849;
    --c-accent-1: #2BAFD4;
    --c-accent-2: #55C7E8;
    --c-bg: #FFFFFF;
    --c-bg-alt: #F5F7FA;
    --c-text: #1E293B;
    --c-text-sub: #64748B;
    --c-border: #E2E8F0;
    --c-white: #FFFFFF;

    /* Typography */
    --font-base: 'Inter', 'Noto Sans JP', sans-serif;
    
    /* Layout */
    --container-width: 1200px;
    --header-height: 80px;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-base);
    color: var(--c-text);
    background-color: var(--c-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
    list-style: none;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 4%;
}

.section {
    padding: 100px 0;
}

.bg-gray {
    background-color: var(--c-bg-alt);
}

.bg-dark {
    background-color: var(--c-primary);
    color: var(--c-white);
}

.mt-4 {
    margin-top: 1.5rem;
}

/* ==========================================================================
   Typography & Titles
   ========================================================================== */
.section__header {
    text-align: center;
    margin-bottom: 50px;
}

.section__title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--c-primary);
    position: relative;
    padding-bottom: 16px;
}

.bg-dark .section__title {
    color: var(--c-white);
}

.section__title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background-color: var(--c-accent-1);
    border-radius: 2px;
}

/* ==========================================================================
   Components (Buttons, Tags)
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 30px;
    transition: var(--transition);
    text-align: center;
}

.btn--primary {
    background-color: var(--c-accent-1);
    color: var(--c-white);
}

.btn--primary:hover {
    background-color: var(--c-accent-2);
    color: var(--c-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(85, 199, 232, 0.3);
}

.btn--secondary {
    background-color: var(--c-white);
    color: var(--c-primary);
    border: 1px solid transparent;
}

.btn--secondary:hover {
    background-color: var(--c-bg-alt);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.btn--outline {
    background-color: transparent;
    border: 1px solid var(--c-white);
    color: var(--c-white);
}

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

.btn--full {
    width: 100%;
}

.btn--large {
    padding: 16px 40px;
    font-size: 1.125rem;
}

.tag {
    display: inline-block;
    padding: 4px 10px;
    background-color: var(--c-bg-alt);
    color: var(--c-text-sub);
    font-size: 0.75rem;
    border-radius: 4px;
    font-weight: 500;
    margin: 0 6px 6px 0;
}

/* ==========================================================================
   Header
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 100;
    transition: all 0.4s ease;
    background-color: transparent;
}

.header.is-scrolled {
    background-color: var(--c-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    height: 70px;
}

.header__inner {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 4%;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header__logo img {
    height: 28px;
    width: auto;
}

.logo-dark { display: none; }
.header.is-scrolled .logo-white { display: none; }
.header.is-scrolled .logo-dark { display: block; }

.header__nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.header__nav-list {
    display: flex;
    gap: 24px;
}

.header__nav-list a {
    color: var(--c-white);
    font-weight: 500;
    font-size: 0.95rem;
}

.header__nav-list a:hover {
    color: var(--c-accent-1);
}

.header.is-scrolled .header__nav-list a {
    color: var(--c-text);
}

.header.is-scrolled .header__nav-list a:hover {
    color: var(--c-accent-1);
}

.header.is-scrolled .btn--outline {
    border-color: var(--c-primary);
    color: var(--c-primary);
}

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

/* Hamburger */
.header__toggle {
    display: none;
    width: 44px;
    height: 44px;
    position: relative;
    z-index: 101;
}

.hamburger, .hamburger::before, .hamburger::after {
    content: '';
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--c-white);
    position: absolute;
    left: 10px;
    transition: var(--transition);
}

.header.is-scrolled .hamburger,
.header.is-scrolled .hamburger::before,
.header.is-scrolled .hamburger::after {
    background-color: var(--c-primary);
}

.hamburger { top: 21px; }
.hamburger::before { top: -7px; left: 0; }
.hamburger::after { top: 7px; left: 0; }

/* Menu Open State */
.header.is-open .hamburger { background-color: transparent !important; }
.header.is-open .hamburger::before { top: 0; transform: rotate(45deg); background-color: var(--c-primary); }
.header.is-open .hamburger::after { top: 0; transform: rotate(-45deg); background-color: var(--c-primary); }

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    background-color: var(--c-primary);
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: var(--header-height);
}

.hero__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 2;
    width: 100%;
}

.hero__content {
    flex: 1;
    max-width: 600px;
    color: var(--c-white);
}

.hero__subcopy {
    color: var(--c-accent-1);
    font-weight: 600;
    font-size: 1.125rem;
    margin-bottom: 16px;
    letter-spacing: 0.05em;
}

.hero__title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: 0.02em;
}

.hero__desc {
    font-size: 1.05rem;
    color: #cbd5e1;
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero__actions {
    display: flex;
    gap: 16px;
}

.hero__visual {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.hero__image {
    width: 100%;
    max-width: 500px;
    animation: float 6s ease-in-out infinite;
}

.hero__bg-glow {
    position: absolute;
    top: 50%;
    right: 10%;
    transform: translateY(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(85,199,232,0.15) 0%, rgba(16,29,56,0) 70%);
    z-index: 1;
    pointer-events: none;
}

@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0); }
}

/* ==========================================================================
   Features Section
   ========================================================================== */
.features__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--c-white);
    padding: 32px 24px;
    border-radius: 12px;
    border: 1px solid var(--c-border);
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(16, 29, 56, 0.06);
    border-color: var(--c-accent-1);
}

.feature-card__icon {
    width: 56px;
    height: 56px;
    background-color: var(--c-bg-alt);
    color: var(--c-accent-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-card__title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card__desc {
    font-size: 0.9rem;
    color: var(--c-text-sub);
}

/* ==========================================================================
   Search & Companies Section
   ========================================================================== */
.search-box {
    background: var(--c-white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(16, 29, 56, 0.05);
    margin-bottom: 40px;
}

.search-form {
    display: flex;
    gap: 20px;
    align-items: flex-end;
}

.search-form__item {
    flex: 1;
}

.search-form__item label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--c-text);
}

.search-form input,
.search-form select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--c-border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    color: var(--c-text);
    background-color: var(--c-bg-alt);
    transition: var(--transition);
}

.search-form input:focus,
.search-form select:focus {
    outline: none;
    border-color: var(--c-accent-1);
    background-color: var(--c-white);
    box-shadow: 0 0 0 3px rgba(85, 199, 232, 0.1);
}

.select-wrapper {
    position: relative;
}

.select-wrapper::after {
    content: '';
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 6px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 6'%3E%3Cpath fill='%2364748B' d='M5 6L0 1.3 1.4 0 5 3.4 8.6 0 10 1.3 5 6z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    pointer-events: none;
}

.search-form select {
    appearance: none;
    padding-right: 40px;
}

.search-form__action {
    flex: 0 0 160px;
}

/* Company Grid */
.company-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.company-card {
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.company-card:hover {
    box-shadow: 0 10px 30px rgba(16, 29, 56, 0.08);
    transform: translateY(-4px);
}

.company-card__header {
    margin-bottom: 12px;
}

.company-card__category {
    font-size: 0.75rem;
    color: var(--c-accent-1);
    font-weight: 700;
    letter-spacing: 0.05em;
}

.company-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.4;
}

.company-card__desc {
    font-size: 0.9rem;
    color: var(--c-text-sub);
    margin-bottom: 20px;
    flex-grow: 1;
}

.company-card__fields {
    margin-bottom: 20px;
}

.company-card__link {
    display: inline-flex;
    align-items: center;
    color: var(--c-primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-top: auto;
}

.company-card__link::after {
    content: '→';
    margin-left: 8px;
    transition: transform 0.3s;
}

.company-card:hover .company-card__link::after {
    transform: translateX(4px);
    color: var(--c-accent-1);
}

.no-result {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px;
    color: var(--c-text-sub);
    background: var(--c-white);
    border-radius: 12px;
}

/* ==========================================================================
   Industries Section
   ========================================================================== */
.industries {
    background:
        radial-gradient(ellipse 60% 40% at 50% 0%, rgba(43, 175, 212, 0.08) 0%, transparent 70%),
        var(--c-bg);
}

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

.industry-card {
    position: relative;
    background: var(--c-white);
    padding: 28px 28px 32px;
    border-radius: 16px;
    border: 1px solid var(--c-border);
    overflow: hidden;
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.industry-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-accent-1) 100%);
    opacity: 0.85;
    transition: opacity 0.35s ease, height 0.35s ease;
}

.industry-card:hover {
    transform: translateY(-6px);
    border-color: rgba(43, 175, 212, 0.35);
    box-shadow: 0 18px 40px rgba(16, 29, 56, 0.1);
}

.industry-card:hover::before {
    opacity: 1;
    height: 4px;
}

.industry-card__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.industry-card__num {
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--c-accent-1);
}

.industry-card__icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-accent-1);
    background: linear-gradient(145deg, rgba(43, 175, 212, 0.12) 0%, rgba(16, 29, 56, 0.04) 100%);
    transition: transform 0.35s ease, background 0.35s ease, color 0.35s ease;
}

.industry-card:hover .industry-card__icon {
    transform: scale(1.06);
    color: var(--c-white);
    background: linear-gradient(145deg, var(--c-accent-1) 0%, var(--c-primary) 100%);
}

.industry-card__title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--c-primary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.industry-card__desc {
    font-size: 0.9rem;
    color: var(--c-text-sub);
    line-height: 1.8;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 60px;
    border-radius: 24px;
}

.about__content {
    flex: 1;
}

.about__title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.about__desc {
    color: #cbd5e1;
    font-size: 1rem;
    line-height: 1.8;
}

.about__visual {
    flex: 0 0 300px;
    display: flex;
    justify-content: center;
}

.about__circle {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(85,199,232,0.8), rgba(22,40,73,0.8));
    position: relative;
    box-shadow: 0 0 40px rgba(85,199,232,0.3);
}

.about__circle::before {
    content: '';
    position: absolute;
    top: -10px; left: -10px; right: -10px; bottom: -10px;
    border: 1px dashed var(--c-accent-2);
    border-radius: 50%;
    animation: spin 20s linear infinite;
    opacity: 0.5;
}

@keyframes spin { 100% { transform: rotate(360deg); } }

/* ==========================================================================
   News Section
   ========================================================================== */
.news__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.news-card {
    background: var(--c-white);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--c-border);
    transition: var(--transition);
}

.news-card:hover {
    box-shadow: 0 12px 30px rgba(16, 29, 56, 0.08);
    transform: translateY(-4px);
}

.news-card__thumb {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

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

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

.news-card__category {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--c-primary);
    color: var(--c-white);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 4px;
}

/* Category colors */
.news-card__category--news,
.article-meta__category--news,
.cat-legend__item--news::before {
    background: #2BAFD4;
    color: #fff;
}

.news-card__category--intro,
.article-meta__category--intro,
.cat-legend__item--intro::before {
    background: #3B82F6;
    color: #fff;
}

.news-card__category--case,
.article-meta__category--case,
.cat-legend__item--case::before {
    background: #0F766E;
    color: #fff;
}

.news__actions {
    text-align: center;
    margin-top: 48px;
}

.news-list-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 40px;
}

.news-filter-btn {
    padding: 8px 18px;
    border-radius: 999px;
    border: 1px solid var(--c-border);
    background: var(--c-white);
    color: var(--c-text);
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
}

.news-filter-btn:hover {
    border-color: var(--c-accent-1);
    color: var(--c-accent-1);
}

.news-filter-btn.is-active {
    background: var(--c-primary);
    border-color: var(--c-primary);
    color: var(--c-white);
}

.news-filter-btn.is-active[data-filter="news"] {
    background: #2BAFD4;
    border-color: #2BAFD4;
}

.news-filter-btn.is-active[data-filter="intro"] {
    background: #3B82F6;
    border-color: #3B82F6;
}

.news-filter-btn.is-active[data-filter="case"] {
    background: #0F766E;
    border-color: #0F766E;
}

.cat-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    margin-bottom: 28px;
    font-size: 0.85rem;
    color: var(--c-text-sub);
}

.cat-legend__item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.cat-legend__item::before {
    content: '';
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--c-primary);
}

.news-card.is-hidden {
    display: none;
}

.news-card__content {
    padding: 24px;
}

.news-card__date {
    display: block;
    font-size: 0.85rem;
    color: var(--c-text-sub);
    margin-bottom: 8px;
    font-family: 'Inter', sans-serif;
}

.news-card__title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.5;
}

.news-card__desc {
    font-size: 0.9rem;
    color: var(--c-text-sub);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==========================================================================
   CTA Section
   ========================================================================== */
.cta {
    background: linear-gradient(135deg, var(--c-bg-alt) 0%, #E0F7FA 100%);
    text-align: center;
}

.cta__container {
    max-width: 800px;
    background: var(--c-white);
    padding: 60px 40px;
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(16, 29, 56, 0.05);
}

.cta__title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--c-primary);
    margin-bottom: 20px;
}

.cta__desc {
    font-size: 1rem;
    color: var(--c-text-sub);
    margin-bottom: 30px;
}

.text-small {
    display: block;
    font-size: 0.85rem;
    margin-top: 12px;
    color: #94a3b8;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--c-primary);
    color: var(--c-white);
    padding: 80px 0 20px;
}

.footer__top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 60px;
    gap: 40px;
}

.footer__info {
    max-width: 400px;
}

.footer__logo {
    height: 32px;
    margin-bottom: 20px;
}

.footer__desc {
    font-size: 0.9rem;
    color: #cbd5e1;
    line-height: 1.8;
}

.footer__links {
    display: flex;
    gap: 80px;
}

.footer__nav-title {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--c-accent-1);
}

.footer__nav-group ul li {
    margin-bottom: 12px;
}

.footer__nav-group a {
    color: #cbd5e1;
    font-size: 0.95rem;
}

.footer__nav-group a:hover {
    color: var(--c-white);
    padding-left: 4px;
}

.footer__bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
    font-size: 0.85rem;
    color: #94a3b8;
    font-family: 'Inter', sans-serif;
}

/* ==========================================================================
   Animations
   ========================================================================== */
.js-fade {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.js-fade.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media screen and (max-width: 1024px) {
    .section { padding: 80px 0; }
    
    .hero__title { font-size: 2.75rem; }
    
    .features__grid { grid-template-columns: repeat(2, 1fr); }
    .company-grid { grid-template-columns: repeat(2, 1fr); }
    .industries__grid { grid-template-columns: repeat(2, 1fr); }
    .news__grid { grid-template-columns: repeat(2, 1fr); }
    
    .about__inner { flex-direction: column; text-align: center; padding: 40px; }
    .about__desc { text-align: left; }
    .about__visual { margin-top: 30px; }
    
    .footer__links { gap: 40px; }
}

@media screen and (max-width: 767px) {
    :root { --header-height: 60px; }
    
    .section { padding: 60px 0; }
    
    .section__title { font-size: 1.5rem; }
    
    .header__nav {
        position: fixed;
        top: 0; left: 0; width: 100%; height: 100vh;
        background-color: var(--c-white);
        flex-direction: column;
        justify-content: center;
        padding: 80px 20px;
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        transform: translateY(-20px);
    }
    
    .header.is-open .header__nav {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .header__nav-list {
        flex-direction: column;
        text-align: center;
        gap: 32px;
        margin-bottom: 40px;
    }
    
    .header__nav-list a {
        color: var(--c-primary) !important;
        font-size: 1.25rem;
    }
    
    .header__toggle { display: block; }
    
    .hero { flex-direction: column; padding-top: calc(var(--header-height) + 40px); min-height: auto; padding-bottom: 60px;}
    .hero__container { flex-direction: column; text-align: center; }
    .hero__actions { flex-direction: column; }
    .hero__visual { display: none; /* SPではビジュアル非表示でシンプルに */ }
    
    .features__grid, .company-grid, .industries__grid, .news__grid {
        grid-template-columns: 1fr;
    }
    
    .search-form { flex-direction: column; align-items: stretch; }
    .search-form__action { flex: auto; margin-top: 10px; }
    .search-box { padding: 24px; }
    
    .cta__container { padding: 40px 20px; }
    
    .footer__top { flex-direction: column; }
    .footer__links { flex-direction: column; gap: 40px; }
}

/* ==========================================================================
   Sub Pages (下層ページ共通)
   ========================================================================== */
.header--sub {
    background-color: var(--c-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.header--sub .logo-white { display: none; }
.header--sub .logo-dark { display: block; }

.header--sub .header__nav-list a {
    color: var(--c-text);
}

.header--sub .header__nav-list a:hover {
    color: var(--c-accent-1);
}

.header--sub .btn--outline {
    border-color: var(--c-primary);
    color: var(--c-primary);
}

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

.header--sub .hamburger,
.header--sub .hamburger::before,
.header--sub .hamburger::after {
    background-color: var(--c-primary);
}

.page-hero {
    background-color: var(--c-primary);
    color: var(--c-white);
    padding: calc(var(--header-height) + 48px) 0 48px;
    position: relative;
    overflow: hidden;
}

.page-hero__inner {
    position: relative;
    z-index: 2;
}

.page-hero__label {
    display: inline-block;
    color: var(--c-accent-1);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
}

.page-hero__title {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 12px;
}

.page-hero__desc {
    color: #cbd5e1;
    font-size: 1rem;
    max-width: 640px;
    line-height: 1.8;
}

.page-hero__bg {
    position: absolute;
    top: 50%;
    right: 5%;
    transform: translateY(-50%);
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(85,199,232,0.18) 0%, rgba(16,29,56,0) 70%);
    pointer-events: none;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    font-size: 0.85rem;
    margin-bottom: 20px;
    color: #94a3b8;
}

.breadcrumb a {
    color: var(--c-accent-2);
}

.breadcrumb a:hover {
    color: var(--c-white);
}

.breadcrumb__sep {
    opacity: 0.5;
}

.content-section {
    padding: 80px 0;
}

.content-block {
    max-width: 800px;
    margin: 0 auto;
}

.content-block h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--c-primary);
    margin: 48px 0 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--c-border);
}

.content-block h2:first-child {
    margin-top: 0;
}

.content-block h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--c-primary);
    margin: 32px 0 12px;
}

.content-block p {
    color: var(--c-text);
    line-height: 1.9;
    margin-bottom: 16px;
}

.content-block ul,
.content-block ol {
    margin: 0 0 20px 1.25rem;
    list-style: disc;
}

.content-block ol {
    list-style: decimal;
}

.content-block li {
    margin-bottom: 8px;
    line-height: 1.8;
    color: var(--c-text);
}

.content-block a {
    color: var(--c-accent-1);
    text-decoration: underline;
}

.content-block a:hover {
    color: var(--c-primary);
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-bottom: 8px;
}

.article-meta__category {
    display: inline-block;
    background: var(--c-primary);
    color: var(--c-white);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 4px;
}

.article-meta__date {
    font-size: 0.9rem;
    color: #94a3b8;
    font-family: 'Inter', sans-serif;
}

.article-eyecatch {
    margin: 40px 0;
    border-radius: 12px;
    overflow: hidden;
}

.article-eyecatch img {
    width: 100%;
    height: auto;
}

.article-nav {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 60px;
    padding-top: 32px;
    border-top: 1px solid var(--c-border);
}

.article-nav a {
    color: var(--c-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

.article-nav a:hover {
    color: var(--c-accent-1);
}

.company-detail {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 40px;
    align-items: start;
}

.company-detail__main {
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: 16px;
    padding: 40px;
}

.company-detail__side {
    position: sticky;
    top: calc(var(--header-height) + 24px);
}

.company-detail__panel {
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: 16px;
    padding: 28px;
}

.company-detail__panel + .company-detail__panel {
    margin-top: 20px;
}

.company-detail__label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--c-text-sub);
    margin-bottom: 8px;
}

.company-detail__value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--c-primary);
    margin-bottom: 20px;
}

.company-detail__value:last-child {
    margin-bottom: 0;
}

.company-detail__category {
    display: inline-block;
    color: var(--c-accent-1);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.company-detail__name {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--c-primary);
    margin-bottom: 20px;
    line-height: 1.4;
}

.company-detail__desc {
    color: var(--c-text-sub);
    line-height: 1.9;
    margin-bottom: 28px;
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
    align-items: start;
}

.contact-info {
    background: var(--c-bg-alt);
    border-radius: 16px;
    padding: 36px;
}

.contact-info__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--c-primary);
    margin-bottom: 16px;
}

.contact-info__desc {
    color: var(--c-text-sub);
    line-height: 1.8;
    margin-bottom: 24px;
}

.contact-info__list li {
    margin-bottom: 12px;
    padding-left: 16px;
    position: relative;
    color: var(--c-text);
    line-height: 1.7;
}

.contact-info__list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.7em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--c-accent-1);
}

.contact-form {
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: 16px;
    padding: 36px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--c-text);
}

.form-group .required {
    color: #ef4444;
    font-size: 0.75rem;
    margin-left: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--c-border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    color: var(--c-text);
    background-color: var(--c-bg-alt);
    transition: var(--transition);
}

.form-group textarea {
    min-height: 160px;
    resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--c-accent-1);
    background-color: var(--c-white);
    box-shadow: 0 0 0 3px rgba(85, 199, 232, 0.1);
}

.form-note {
    font-size: 0.85rem;
    color: var(--c-text-sub);
    margin-bottom: 20px;
    line-height: 1.7;
}

.form-message {
    display: none;
    margin-top: 16px;
    padding: 14px 16px;
    border-radius: 8px;
    background: rgba(85, 199, 232, 0.12);
    color: var(--c-primary);
    font-weight: 500;
}

.form-message.is-visible {
    display: block;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.related-card {
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: 12px;
    padding: 24px;
    transition: var(--transition);
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(16, 29, 56, 0.08);
}

.related-card__title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--c-primary);
}

.related-card__desc {
    font-size: 0.9rem;
    color: var(--c-text-sub);
    line-height: 1.7;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--c-primary);
    margin-top: 40px;
}

.back-link:hover {
    color: var(--c-accent-1);
}

@media screen and (max-width: 1024px) {
    .company-detail {
        grid-template-columns: 1fr;
    }

    .company-detail__side {
        position: static;
    }

    .contact-layout {
        grid-template-columns: 1fr;
    }

    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 767px) {
    .page-hero {
        padding: calc(var(--header-height) + 32px) 0 36px;
    }

    .page-hero__title {
        font-size: 1.5rem;
    }

    .content-section {
        padding: 48px 0;
    }

    .company-detail__main,
    .contact-form,
    .contact-info {
        padding: 24px;
    }

    .related-grid {
        grid-template-columns: 1fr;
    }

    .article-nav {
        flex-direction: column;
    }
}

/* アクセシビリティ考慮（アニメーション軽減設定） */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .js-fade { opacity: 1; transform: none; }
}