@font-face {
    font-family: 'jost';
    src: url('https://kokyujene.super-hiko14.com/fonts/Jost-Bold.ttf') format('truetype');
    font-weight: bold;
    font-style: normal;
}

@font-face {
    font-family: 'jost';
    src: url('https://kokyujene.super-hiko14.com/fonts/Jost.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

@font-face {
    font-family: 'zenkaku';
    src: url('https://kokyujene.super-hiko14.com/fonts/zenkaku.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

@font-face {
    font-family: 'zenkaku';
    src: url('https://kokyujene.super-hiko14.com/fonts/zenkaku-Bold.ttf') format('truetype');
    font-weight: bold;
    font-style: normal;
}

:root {
    --primary-color: rgba(178, 178, 178);
    --primary-hover: #dadada;
    --primary-color-dark: rgba(178, 178, 178);
    --primary-hover-dark: #bbb;
    --bg-light: #fdfdfd;
    --bg-dark: #0a0a0a;
    --panel-dark: #151515;
    --panel-dark-2: #151515;
    --panel-light: #f5f5f5;
    --panel-light-2: #f5f5f5;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'jost', 'zenkaku', sans-serif;
}

body {
    background-color: var(--bg-light);
    color: #0a0a0a;
}

body.dark {
    background-color: var(--bg-dark);
    color: #fdfdfd;
}

@keyframes headerGrowIn {
    0% {
        opacity: 0;
        transform: translateX(-50%) scaleX(0.72);
    }
    100% {
        opacity: 1;
        transform: translateX(-50%) scaleX(1);
    }
}

@keyframes fadeInFromLeft {
    0% {
        opacity: 0;
        transform: translateX(-18px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInSoft {
    0% {
        opacity: 0;
        transform: translateY(8px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes mobileMainVisualPan {
    0% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(calc(-1 * var(--pan-distance, 0px)));
    }
    100% {
        transform: translateX(0);
    }
}

/* ヘッダー */
header#mainHeader {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin: 24px auto;
    width: 90%;
    max-width: 800px;
    padding: 12px 24px;
    background-color: var(--panel-light);
    border-radius: 999px;
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    transform-origin: center;
    animation: headerGrowIn 0.55s cubic-bezier(0.2, 0.9, 0.2, 1) both;
}

body.dark header#mainHeader {
    background-color: var(--panel-dark);
}

/* ロゴ */
header#mainHeader .logo img {
    width: 40px;
    height: 40px;
    vertical-align: middle;
}

/* メニューリスト */
header#mainHeader .list {
    flex: 1;
    display: flex;
    justify-content: center;
}

header#mainHeader .logo,
header#mainHeader .list,
header#mainHeader .hamburger-wrapper {
    opacity: 0;
    animation: fadeInFromLeft 0.45s ease both;
}

header#mainHeader .logo {
    animation-delay: 0.35s;
}

header#mainHeader .list {
    animation-delay: 0.45s;
}

header#mainHeader .hamburger-wrapper {
    animation-delay: 0.55s;
}

header#mainHeader .list ul {
    display: flex;
    list-style: none;
    gap: 8px;
}

header#mainHeader .list a {
    display: inline-flex;
    align-items: center;
    padding: 10px 25px;
    background-color: transparent;
    color: #0a0a0a;
    text-decoration: none;
    border-radius: 24px;
    font-weight: 500;
    font-size: 14px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

body.dark header#mainHeader .list a {
    color: #fdfdfd;
}

header#mainHeader .list a:hover {
    background-color: var(--primary-color);
    color: white;
}

body.dark header#mainHeader .list a:hover {
    background-color: var(--primary-color-dark);
    color: white;
}

/* ハンバーガーボタン */
.hamburger {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    position: relative;
    z-index: 102;
}

.hamburger-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.hamburger-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.hamburger span {
    width: 32px;
    height: 2.5px;
    background: #0a0a0a;
    border-radius: 2px;
    transition: all 0.3s ease;
    position: relative;
}

body.dark .hamburger span {
    background: #fdfdfd;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.navigation-dropdown {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    background: var(--panel-light);
    border-radius: 0 0 24px 24px;
    padding: 16px 12px;
    z-index: 99;
    min-width: 200px;
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
}

.navigation-dropdown.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.98);
    pointer-events: none;
}

body.dark .navigation-dropdown {
    background: var(--panel-dark-2);
}

.navigation-dropdown .nav-content .list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.navigation-dropdown .list a {
    display: inline-flex;
    align-items: center;
    padding: 10px 25px;
    background-color: transparent;
    color: #0a0a0a;
    text-decoration: none;
    border-radius: 24px;
    font-weight: 500;
    font-size: 14px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

body.dark .navigation-dropdown .list a {
    color: #fdfdfd;
}

.navigation-dropdown .list a:hover {
    background-color: var(--primary-color);
    color: white;
}

body.dark .navigation-dropdown .list a:hover {
    background-color: var(--primary-color-dark);
    color: white;
}

/* スマホハンバーガー浮動 */
.hamburger-float {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 102;
    display: none;
    background: none;
}

.hamburger-float.mobile-only {
    display: none;
}

/* スマホ全画面ナビ */
.mobile-fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--bg-light);
    z-index: 101;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 1;
    visibility: visible;
    transition: all 0.3s ease;
}

.mobile-fullscreen.hidden {
    opacity: 0;
    visibility: hidden;
}

body.dark .mobile-fullscreen {
    background: var(--bg-dark);
}

body.mobile-nav-open {
    overflow: hidden;
}

.mobile-nav-content {
    width: 90%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
    max-height: 100vh;
    max-height: 100svh;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    padding: 40px 0;
}

.mobile-nav-logo {
    text-align: center;
}

.mobile-nav-logo img {
    width: 60px;
    height: 60px;
}

.mobile-nav-content .list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
    width: 100%;
    text-align: center;
}

.mobile-nav-content .list a {
    display: inline-flex;
    align-items: center;
    padding: 10px 25px;
    background-color: transparent;
    color: #0a0a0a;
    text-decoration: none;
    border-radius: 24px;
    font-weight: 500;
    font-size: 14px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

body.dark .mobile-nav-content .list a {
    color: #fdfdfd;
}

.mobile-nav-content .list a:hover {
    background-color: var(--primary-color);
    color: white;
}

body.dark .mobile-nav-content .list a:hover {
    background-color: var(--primary-color-dark);
    color: white;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .pc-only {
        display: none !important;
    }
    
    .mobile-only {
        display: block !important;
    }
    
    .hamburger-float {
        display: block !important;
        opacity: 0;
        animation: fadeInSoft 0.45s ease 0.2s both;
    }
    
    .hamburger-float.mobile-only {
        display: block !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    header#mainHeader,
    header#mainHeader .logo,
    header#mainHeader .list,
    header#mainHeader .hamburger-wrapper,
    .hamburger-float {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }

    header#mainHeader {
        transform: translateX(-50%) !important;
    }

    .navigation-dropdown,
    .navigation-dropdown.hidden {
        transition: none !important;
    }

    .main-visual img {
        animation: none !important;
        transform: none !important;
    }
}

/* コンテンツセクション */
.main-visual {
    width: 100%;
    overflow: hidden;
}

.main-visual img {
    width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
}

.section {
    padding: 80px 0;
}

/* ヒーロー */
.section.hero {
    text-align: center;
    background: linear-gradient(135deg, var(--panel-light) 0%, var(--bg-light) 100%);
    padding: 120px 0 100px;
}

body.dark .section.hero {
    background: linear-gradient(135deg, var(--panel-dark) 0%, var(--bg-dark) 100%);
}

.section.hero h1 {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 16px;
    color: #0a0a0a;
}

body.dark .section.hero h1 {
    color: #fdfdfd;
}

.subtitle {
    font-size: 1.25rem;
    color: #666;
    margin-bottom: 40px;
    line-height: 1.6;
}

b {
    color: #0a0a0a;
    font-size: 120%;
}

body.dark .subtitle {
    color: #aaa;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    border-radius: 24px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

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

body.dark .btn-primary {
    background-color: var(--primary-color-dark);
}

body.dark .btn-primary:hover {
    background-color: var(--primary-hover-dark);
}

.btn-secondary {
    background-color: transparent;
    color: #0a0a0a;
}

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

body.dark .btn-secondary {
    color: #fdfdfd;
}

body.dark .btn-secondary:hover {
    background-color: var(--primary-color-dark);
}

.btn-large {
    padding: 16px 48px;
    font-size: 1.1rem;
}

/* フィーチャーセクション */
.section.features {
    background: var(--bg-light);
}

body.dark .section.features {
    background: var(--bg-dark);
}

.section.features h2 {
    font-size: 2.5rem;
    margin-bottom: 60px;
    text-align: center;
    color: #0a0a0a;
}

body.dark .section.features h2 {
    color: #fdfdfd;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--panel-light);
    padding: 32px 24px;
    border-radius: 24px;
    text-align: center;
    transition: all 0.3s ease;
}

body.dark .feature-card {
    background: var(--panel-dark);
}

.feature-icon {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.feature-icon svg {
    color: var(--primary-color);
}

body.dark .feature-icon svg {
    color: var(--primary-color-dark);
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: #0a0a0a;
}

body.dark .feature-card h3 {
    color: #fdfdfd;
}

.feature-list {
    list-style: none;
    text-align: left;
    display: inline-block;
    margin: 0 auto;
}

.feature-list li {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.8;
    padding-left: 20px;
    position: relative;
    margin-bottom: 6px;
}

body.dark .feature-list li {
    color: #aaa;
}

.feature-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background-color: var(--primary-color);
    border-radius: 50%;
}

body.dark .feature-list li::before {
    background-color: var(--primary-color-dark);
}

.feature-card p {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.6;
}

body.dark .feature-card p {
    color: #aaa;
}

/* CTA セクション */
.section.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, rgba(178, 178, 178, 0.8) 100%);
    text-align: center;
    padding: 100px 0;
}

.section.cta-section h2 {
    font-size: 2.2rem;
    color: white;
    margin-bottom: 12px;
}

.section.cta-section .subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 32px;
}

.section.cta-section p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 32px;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .main-visual {
        height: 100vh;
        height: 100svh;
        overflow: hidden;
    }

    .main-visual img {
        width: auto;
        height: 100%;
        max-width: none;
        transform: translateX(0);
    }

    .main-visual.auto-pan img {
        animation: mobileMainVisualPan 14s ease-in-out infinite;
    }

    .section {
        padding: 60px 0;
    }

    .section.hero {
        padding: 80px 0 60px;
    }

    .section.hero h1 {
        font-size: 2.2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .section.features h2 {
        font-size: 1.8rem;
        margin-bottom: 40px;
    }

    .feature-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .section.cta-section h2 {
        font-size: 1.6rem;
    }

    .section.cta-section p {
        font-size: 1rem;
    }
}

/* フッター */
.site-footer {
    background-color: var(--panel-light);
    padding: 80px 0 24px;
    margin-top: 0;
}

body.dark .site-footer {
    background-color: var(--panel-dark);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 48px;
    margin-bottom: 60px;
    flex-wrap: wrap;
    text-align: left;
}

.footer-brand {
    flex: 1 1 300px;
}

.footer-logo {
    width: 64px;
    height: 64px;
    margin-bottom: 20px;
}

.footer-brand-title {
    font-size: 1.8rem;
    font-weight: bold;
    color: #0a0a0a;
    margin-bottom: 12px;
}

body.dark .footer-brand-title {
    color: #fdfdfd;
}

.footer-desc {
    color: #666;
    font-size: 1rem;
    line-height: 1.8;
}

body.dark .footer-desc {
    color: #aaa;
}

.theme-toggle-footer {
    background: var(--panel-light-2);
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    margin-top: 24px;
    transition: all 0.3s ease;
}

body.dark .theme-toggle-footer {
    background: var(--panel-dark-2);
}

.theme-toggle-footer:hover {
    transform: scale(1.05);
    background-color: var(--primary-color);
}

.theme-toggle-footer img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.footer-links-group {
    display: flex;
    gap: 64px;
    flex-wrap: wrap;
}

.footer-col h4 {
    font-size: 1.1rem;
    color: #0a0a0a;
    margin-bottom: 24px;
}

body.dark .footer-col h4 {
    color: #fdfdfd;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-col a {
    color: #666;
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

body.dark .footer-col a {
    color: #aaa;
}

.footer-col a:hover {
    color: var(--primary-color);
}

body.dark .footer-col a:hover {
    color: var(--primary-color-dark);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

body.dark .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: #888;
    font-size: 0.9rem;
}

body.dark .footer-bottom p {
    color: #777;
}

/* スマホ用フッター調整 */
@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        text-align: center;
        align-items: center;
        gap: 40px;
    }
    
    .footer-brand {
        flex: 1 1 auto;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .footer-links-group {
        width: 100%;
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-col {
        text-align: center;
    }
}

/* 404エラーページ */
.section.error-404 {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--panel-light) 0%, var(--bg-light) 100%);
    padding: 120px 0;
}

body.dark .section.error-404 {
    background: linear-gradient(135deg, var(--panel-dark) 0%, var(--bg-dark) 100%);
}

.error-container {
    max-width: 700px;
    text-align: center;
}

.error-code {
    font-size: 12rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary-color) 0%, rgba(178, 178, 178, 0.6) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 16px;
    opacity: 0.8;
}

body.dark .error-code {
    background: linear-gradient(135deg, var(--primary-color-dark) 0%, rgba(178, 178, 178, 0.4) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.error-container h1 {
    font-size: 2.8rem;
    font-weight: bold;
    color: #0a0a0a;
    margin-bottom: 16px;
}

body.dark .error-container h1 {
    color: #fdfdfd;
}

.error-message {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 40px;
    line-height: 1.8;
}

body.dark .error-message {
    color: #aaa;
}

.error-suggestions {
    background: var(--panel-light);
    padding: 40px 32px;
    border-radius: 24px;
    margin-bottom: 40px;
    text-align: left;
}

body.dark .error-suggestions {
    background: var(--panel-dark);
}

.error-suggestions > p {
    font-size: 1rem;
    font-weight: 600;
    color: #0a0a0a;
    margin-bottom: 16px;
}

body.dark .error-suggestions > p {
    color: #fdfdfd;
}

.suggestion-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.suggestion-list li {
    font-size: 0.95rem;
    color: #666;
    padding-left: 24px;
    position: relative;
}

body.dark .suggestion-list li {
    color: #aaa;
}

.suggestion-list li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

body.dark .suggestion-list li:before {
    color: var(--primary-color-dark);
}

.error-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* スマホ用404調整 */
@media (max-width: 768px) {
    .section.error-404 {
        min-height: auto;
        padding: 60px 0;
    }
    
    .error-code {
        font-size: 6rem;
    }
    
    .error-container h1 {
        font-size: 1.8rem;
    }
    
    .error-message {
        font-size: 1rem;
    }
    
    .error-suggestions {
        padding: 28px 20px;
    }
    
    .error-buttons {
        flex-direction: column;
    }
    
    .error-buttons .btn {
        width: 100%;
    }
}