:root {
    --primary-blue: #2F4858;
    --primary-blue-dark: #223642;
    --primary-green: #FF9800;
    --primary-green-light: #FFB347;
    --dark: #1E293B;
    --dark-light: #334155;
    --gray: #64748B;
    --gray-light: #94A3B8;
    --gray-lighter: #CBD5E1;
    --light: #E2E8F0;
    --lighter: #F8FAFC;
    --white: #FFFFFF;
    --font-main: "Noto Sans JP", "Zen Maru Gothic", sans-serif;
    --font-en: "Inter", "Noto Sans JP", sans-serif;
    --radius-sm: 6px;
    --radius-md: 8px;
    --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
    --shadow-xl: 0 18px 48px rgba(15, 23, 42, 0.16);
    --transition: all 0.25s ease;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body.hsp-blog-page {
    margin: 0;
    color: var(--dark-light);
    background: var(--white);
    font-family: var(--font-main);
    line-height: 1.8;
}

body.hsp-blog-page .blog-site-main,
.post-page {
    padding-top: 72px;
}

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

a:hover {
    color: var(--primary-blue-dark);
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 0 0 auto;
    color: var(--dark);
    text-decoration: none;
    line-height: 1.2;
}

.nav-logo-text {
    color: rgb(35, 47, 62);
    font-size: 16px;
    font-weight: 700;
    line-height: 1.2;
}

.nav-logo i {
    font-size: 1.5rem;
    color: var(--primary-blue);
    flex: 0 0 auto;
}

.nav-logo small {
    display: inline-block;
    font-weight: 400;
    font-size: 11.2px;
    color: rgb(100, 116, 139);
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: var(--transition);
}

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

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

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
    transform: translateY(4px);
}

.nav-link {
    display: block;
    padding: 8px 14px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--dark-light);
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-blue);
    background: rgba(35, 47, 62, 0.06);
}

.nav-cta {
    background: var(--primary-green);
    color: var(--dark) !important;
    font-weight: 700;
    border-radius: 50px;
    padding: 10px 20px;
    margin-left: 8px;
}

.nav-cta:hover {
    color: var(--dark) !important;
    background: #FB8C00;
}

.section-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-blue);
    font-family: var(--font-en);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.blog-hero {
    background: linear-gradient(135deg, #FFF8EE 0%, #F0F4F8 50%, #F8FAFC 100%);
    padding: 56px 0 60px;
    text-align: center;
}

.blog-hero-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
    margin: 12px 0;
}

.blog-hero-subtitle {
    font-size: 1rem;
    color: var(--gray);
    line-height: 1.8;
    margin: 0;
}

.blog-content {
    padding: 60px 0 100px;
}

.blog-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 48px;
    align-items: start;
}

.blog-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 32px;
}

.filter-btn {
    display: inline-flex;
    align-items: center;
    padding: 8px 18px;
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--gray-lighter);
    border-radius: 50px;
    background: var(--white);
    color: var(--gray);
}

.filter-btn:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

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

.blog-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.blog-card {
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(35, 47, 62, 0.1);
}

.blog-card-thumb {
    position: relative;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, #FFF8EE, #F0F4F8);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.blog-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.blog-card-thumb-placeholder {
    font-size: 2.5rem;
    color: var(--primary-blue);
    opacity: 0.2;
}

.blog-card-category {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--primary-blue);
    color: var(--white);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 50px;
}

.blog-card-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.blog-card-date {
    font-size: 0.78rem;
    color: var(--gray-light);
    font-family: var(--font-en);
    margin-bottom: 8px;
}

.blog-card-title {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.6;
    margin: 0 0 10px;
}

.blog-card-title a {
    color: var(--dark);
}

.blog-card-excerpt {
    font-size: 0.85rem;
    color: var(--gray);
    line-height: 1.7;
    margin: 0 0 16px;
    flex: 1;
}

.blog-card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.blog-card-link:hover {
    gap: 10px;
}

.blog-card-link i {
    font-size: 0.75rem;
    transition: var(--transition);
}

.blog-empty {
    text-align: center;
    padding: 80px 0;
    color: var(--gray-light);
}

.blog-empty i {
    font-size: 2.5rem;
    margin-bottom: 16px;
    display: block;
    opacity: 0.4;
}

.blog-pagination {
    margin-top: 40px;
}

.blog-pagination .nav-links {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}

.blog-pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 38px;
    height: 38px;
    padding: 0 12px;
    border: 1px solid var(--light);
    border-radius: var(--radius-sm);
    color: var(--dark-light);
    font-size: 0.88rem;
}

.blog-pagination .page-numbers.current {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: var(--white);
}

.blog-sidebar {
    position: sticky;
    top: 90px;
}

.sidebar-widget {
    background: var(--lighter);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 24px;
}

.sidebar-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--dark);
    margin: 0 0 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-title i {
    color: var(--primary-blue);
    font-size: 0.85rem;
}

.sidebar-search {
    display: flex;
    gap: 8px;
}

.sidebar-search input {
    min-width: 0;
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--gray-lighter);
    border-radius: var(--radius-sm);
    font-family: var(--font-main);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition);
}

.sidebar-search input:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(255, 153, 0, 0.15);
}

.sidebar-search button {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.sidebar-search button:hover {
    background: var(--primary-blue-dark);
}

.sidebar-categories,
.sidebar-recent {
    list-style: none;
    margin: 0;
    padding: 0;
}

.sidebar-categories li {
    margin-bottom: 4px;
}

.sidebar-categories a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    font-size: 0.88rem;
    color: var(--dark-light);
    border-radius: var(--radius-sm);
}

.sidebar-categories a:hover {
    background: rgba(35, 47, 62, 0.06);
    color: var(--primary-blue);
}

.sidebar-categories .cat-count {
    font-size: 0.75rem;
    color: var(--gray-light);
    background: rgba(0, 0, 0, 0.04);
    padding: 2px 8px;
    border-radius: 50px;
}

.sidebar-recent li {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.sidebar-recent li:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.sidebar-recent a {
    font-size: 0.88rem;
    color: var(--dark-light);
    line-height: 1.6;
    display: block;
}

.sidebar-recent a:hover {
    color: var(--primary-blue);
}

.sidebar-recent .recent-date,
.sidebar-empty {
    font-size: 0.75rem;
    color: var(--gray-light);
    font-family: var(--font-en);
    margin-top: 4px;
    display: block;
}

.sidebar-cta {
    background: linear-gradient(135deg, #232F3E, #191E26);
    color: var(--white);
    text-align: center;
}

.sidebar-cta-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.sidebar-cta h3 {
    font-size: 1rem;
    margin: 0 0 8px;
}

.sidebar-cta p {
    font-size: 0.82rem;
    opacity: 0.85;
    line-height: 1.6;
    margin: 0 0 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 50px;
    font-weight: 700;
    line-height: 1;
}

.btn-primary {
    background: var(--primary-green);
    color: var(--dark) !important;
}

.btn-outline {
    border: 1px solid var(--primary-blue);
    color: var(--primary-blue);
}

.sidebar-cta .btn-sm {
    padding: 10px 24px;
    font-size: 0.85rem;
}

.post-page {
    padding-bottom: 0;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 24px 0;
    font-size: 0.82rem;
    color: var(--gray-light);
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--gray);
}

.breadcrumb a:hover {
    color: var(--primary-blue);
}

.breadcrumb i {
    font-size: 0.6rem;
    opacity: 0.4;
}

.breadcrumb span {
    color: var(--dark-light);
    font-weight: 500;
}

.post-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 48px;
    align-items: start;
    padding-bottom: 100px;
}

.post-header {
    margin-bottom: 40px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--light);
}

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

.post-category {
    background: var(--primary-blue);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 14px;
    border-radius: 50px;
}

.post-category:hover {
    color: var(--white);
    background: var(--primary-blue-dark);
}

.post-date {
    font-size: 0.85rem;
    color: var(--gray-light);
    font-family: var(--font-en);
}

.post-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.5;
    margin: 0;
}

.post-featured-image {
    margin: 0 0 36px;
    overflow: hidden;
    border-radius: var(--radius-md);
    background: var(--lighter);
}

.post-featured-image img {
    width: 100%;
}

.post-body {
    font-size: 1rem;
    color: var(--dark-light);
    line-height: 2;
}

.post-body h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark);
    margin-top: 48px;
    margin-bottom: 16px;
    padding-left: 16px;
    border-left: 4px solid var(--primary-blue);
}

.post-body h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--dark);
    margin-top: 32px;
    margin-bottom: 12px;
}

.post-body p {
    margin-bottom: 20px;
}

.post-body ul,
.post-body ol {
    padding-left: 24px;
    margin-bottom: 20px;
}

.post-body li {
    margin-bottom: 8px;
}

.post-body strong {
    color: var(--dark);
}

.post-footer-actions {
    display: flex;
    gap: 16px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--light);
    flex-wrap: wrap;
}

.post-footer-actions .btn {
    padding: 14px 24px;
}

.footer {
    background: var(--dark);
    color: var(--white);
    padding: 56px 0 32px;
}

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

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    font-weight: 700;
}

.footer-logo i {
    color: var(--primary-green);
    font-size: 1.5rem;
}

.footer-logo small {
    font-weight: 400;
    font-size: 0.7em;
    opacity: 0.7;
}

.footer-text {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.95rem;
    line-height: 1.8;
    margin: 0 0 24px;
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px 24px;
    margin-bottom: 24px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.78);
    font-size: 0.88rem;
}

.footer-links a:hover {
    color: var(--white);
}

.footer-copyright {
    margin: 0;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.78rem;
}

.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    color: var(--white);
    background: var(--primary-blue);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: var(--transition);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

body.admin-bar .header {
    top: 32px;
}

body.admin-bar.hsp-blog-page .blog-site-main,
body.admin-bar.hsp-blog-page .post-page {
    padding-top: 104px;
}

@media (max-width: 900px) {
    .blog-layout,
    .post-layout {
        grid-template-columns: 1fr;
    }

    .blog-sidebar {
        position: static;
    }
}

@media (max-width: 782px) {
    body.admin-bar .header {
        top: 46px;
    }

    body.admin-bar.hsp-blog-page .blog-site-main,
    body.admin-bar.hsp-blog-page .post-page {
        padding-top: 118px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 18px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        width: 80%;
        max-width: 320px;
        height: 100dvh;
        min-height: 100vh;
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        padding: 80px 24px 40px;
        background: var(--white);
        box-shadow: var(--shadow-xl);
        transition: transform 0.3s ease;
        transform: translateX(100%);
        z-index: 10020;
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-link {
        width: 100%;
        padding: 12px 16px;
        font-size: 1rem;
    }

    .nav-cta {
        width: 100%;
        margin-top: 12px;
        margin-left: 0;
        text-align: center;
    }

    .blog-hero {
        padding: 44px 0 40px;
    }

    .blog-hero-title {
        font-size: 1.5rem;
    }

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

    .blog-content {
        padding: 40px 0 60px;
    }

    .post-title {
        font-size: 1.35rem;
    }

    .post-body h2 {
        font-size: 1.2rem;
    }

    .blog-filter {
        gap: 6px;
    }

    .filter-btn {
        padding: 6px 14px;
        font-size: 0.8rem;
    }
}

.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 990;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}