:root {
    --bg-color: #f8f9fa;
    --surface-color: #ffffff;
    --primary-color: #007bff;
    --primary-hover-color: #0056b3;
    --text-color: #212529;
    --text-muted-color: #6c757d;
    --border-color: #dee2e6;
    --font-family: 'Noto Sans JP', sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.7;
}

body.nav-open {
    overflow: hidden;
}

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

a:hover {
    text-decoration: underline;
}

h1, h2, h3 {
    line-height: 1.3;
    margin-bottom: 1rem;
    font-weight: 700;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Footer */
.main-header {
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: bold;
    color: var(--text-color);
}
.logo:hover { text-decoration: none; }

.logo ruby {
    font-size: 1.5rem;
    line-height: 1;
}

.logo rt {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-muted-color);
    letter-spacing: 0.05em;
}

.main-header .main-nav > * {
    margin-left: 20px;
}

.main-header .main-nav a {
    color: var(--text-muted-color);
    font-weight: 400;
}

.main-header .main-nav a:hover {
    color: var(--text-color);
    text-decoration: none;
}

.main-header .main-nav a.nav-cta {
    background-color: var(--primary-color);
    color: white;
    padding: 8px 16px;
    border-radius: 5px;
}
.main-header .main-nav a.nav-cta:hover {
    background-color: var(--primary-hover-color);
}

.main-header .main-nav a.language-switcher-nav {
    border: 1px solid var(--border-color);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.main-header .main-nav a.language-switcher-nav:hover {
    background-color: var(--bg-color);
}

.nav-separator {
    display: inline-block;
    width: 1px;
    height: 20px;
    background-color: var(--border-color);
    margin: 0 5px 0 15px;
    vertical-align: middle;
}

/* Dropdown Menu Styles */
.nav-item-dropdown {
    position: relative;
    display: inline-block;
    padding-bottom: 10px; /* Creates a "bridge" for the cursor */
    margin-bottom: -10px; /* Compensates for the padding to keep nav alignment */
}

.dropdown-toggle::after {
    content: ' ▼';
    font-size: 0.6em;
    display: inline-block;
    margin-left: 4px;
    vertical-align: 2px;
    transition: transform 0.2s ease-in-out;
}

.dropdown-menu {
    display: none;
    position: absolute;
    background-color: var(--surface-color);
    min-width: 200px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.07);
    z-index: 100;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 8px 0;
    /* margin-top: 10px; This was creating an inaccessible gap */
}

.dropdown-menu a {
    padding: 10px 20px;
    display: block;
    margin-left: 0 !important;
    color: var(--text-color);
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none; /* Hidden by default on desktop, shown in media query */
    background: transparent;
    border: 0;
    cursor: pointer;
    z-index: 1001; /* Above the nav */
    align-items: center;
    gap: 8px;
    padding: 5px;
    color: var(--text-color);
}

.nav-toggle-label {
    font-weight: bold;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.hamburger-box {
    position: relative;
    width: 30px;
    height: 25px;
}

.hamburger {
    display: block;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%; /* Use width of hamburger-box */
    height: 3px;
    background: var(--text-color);
    border-radius: 3px;
    transition: background-color 0s 0.3s;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--text-color);
    border-radius: 3px;
    transition: transform 0.3s ease;
}

.hamburger::before {
    top: -10px;
}

.hamburger::after {
    bottom: -10px;
}

.nav-toggle.is-active .hamburger {
    background-color: transparent;
}

.nav-toggle.is-active .hamburger::before {
    transform: translateY(10px) rotate(45deg);
}

.nav-toggle.is-active .hamburger::after {
    transform: translateY(-10px) rotate(-45deg);
}

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

    .main-nav {
        visibility: hidden;
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: var(--surface-color);
        padding-top: 80px;
        display: flex;
        flex-direction: column;
        align-items: center;
        transition: right 0.35s ease-in-out, visibility 0.35s;
        z-index: 1000;
        box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    }

    .main-nav.nav--visible {
        right: 0;
        visibility: visible;
    }

    .main-header .main-nav > * {
        margin: 15px 0;
        width: 100%;
        text-align: center;
        margin-left: 0;
    }

    .main-header .main-nav a {
        font-size: 1.2rem;
    }

    .nav-separator {
        display: none;
    }

    /* Mobile Dropdown Styles */
    .nav-item-dropdown {
        display: block;
        padding-bottom: 0; /* Reset bridge for mobile */
        margin-bottom: 0;  /* Reset compensation for mobile */
    }

    .dropdown-toggle::after {
        transform: rotate(0deg);
    }

    .nav-item-dropdown.is-open .dropdown-toggle::after {
        transform: rotate(180deg);
    }

    .dropdown-menu {
        display: none;
        position: static;
        box-shadow: none;
        border: none;
        border-radius: 0;
        background-color: transparent;
        padding: 5px 0 0 0;
        margin-top: 0;
        width: 100%;
    }

    .nav-item-dropdown.is-open .dropdown-menu {
        display: block;
    }

    .dropdown-menu a {
        padding: 10px 20px;
        font-size: 1rem;
        color: var(--text-muted-color);
        background-color: rgba(0,0,0,0.03);
        border-radius: 5px;
        margin: 5px 20px !important;
    }

    .main-header .main-nav a.nav-cta {
        padding: 12px 24px;
    }
}

.nav-item-dropdown:hover .dropdown-menu {
    display: block;
}


.main-footer {
    text-align: center;
    padding: 40px 20px;
    margin-top: 60px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted-color);
    font-size: 0.9rem;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 80px 20px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 30px auto;
    color: var(--text-muted-color);
}

.hero-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 5px;
    font-weight: bold;
    text-decoration: none;
    transition: background-color 0.2s ease;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover-color);
    color: white;
    text-decoration: none;
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 10px 22px; /* Adjust padding to account for border */
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
}

/* Features Section */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin: 60px 0;
}

.feature-card {
    background-color: var(--surface-color);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.feature-card h3 {
    margin-top: 0;
}

.feature-card p {
    color: var(--text-muted-color);
    margin-bottom: 20px;
}

/* FAQ Section */
.faq-item {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}
.faq-q { font-weight: bold; }
.faq-a { color: var(--text-muted-color); }

/* Forms */
.form-wrapper {
    max-width: 480px;
    margin: 60px auto;
    padding: 40px;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    background-color: var(--bg-color);
    color: var(--text-color);
}

/* Alerts for Flashed Messages */
.alert {
    padding: 15px;
    margin: 20px 0;
    border: 1px solid transparent;
    border-radius: 4px;
}

.alert-danger {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

.alert-success {
    color: #155724;
    background-color: #d4edda;
    border-color: #c3e6cb;
}

/* Account Page Info Cards */
.info-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 30px;
    margin-top: 30px;
}

.info-card h3 {
    margin-top: 0;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    margin-bottom: 20px;
}

.info-card p {
    color: var(--text-muted-color);
}

.credential-item {
    margin-top: 15px;
}

.credential-item label {
    font-weight: bold;
    color: var(--text-color);
    display: block;
}

/* Base style for all credential code blocks */
.credential-item code, .credential-grid code {
    font-family: monospace;
    background-color: var(--bg-color);
    padding: 5px 8px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    word-break: break-all;
    transition: background-color 0.2s ease-in-out;
}
 
.credential-grid {
    border-collapse: separate;
    border-spacing: 0 16px; /* vertical spacing between rows */
    margin-top: 0; /* Let the preceding paragraph's margin-bottom create the space */
}

.credential-grid td {
    vertical-align: middle;
}

.credential-grid td:first-child {
    padding-right: 25px;
    white-space: nowrap;
}

.credential-grid strong {
    font-weight: bold;
}

/* Specific rules for code blocks inside the grid */
.credential-grid code {
    display: block; /* Ensure it fills the table cell */
    cursor: pointer;
}

.status-active { color: #28a745; font-weight: bold; }
.status-inactive { color: #dc3545; font-weight: bold; }
/* Account Navigation */
.account-nav {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
    margin-top: 30px;
}
.account-nav-item {
    display: block;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 20px 25px;
    border-radius: 8px;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.account-nav-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    text-decoration: none;
}
.nav-item-title {
    font-weight: bold;
    color: var(--text-color);
    font-size: 1.1rem;
    display: block;
}
.nav-item-desc {
    font-size: 0.9rem;
    color: var(--text-muted-color);
}
.btn-link {
    background: none;
    border: none;
    color: var(--primary-color);
    text-decoration: underline;
    cursor: pointer;
    padding: 0;
    font-family: inherit;
    font-size: inherit;
}
.btn-danger {
    background-color: #dc3545;
    color: white;
}
.btn-danger:hover {
    background-color: #c82333;
    color: white;
    text-decoration: none;
}
/* Port Forwarding Form */
.port-forward-header, .port-forward-rule {
    display: grid;
    grid-template-columns: 1fr 1fr 3fr 1fr 2fr 2fr;
    gap: 15px;
    align-items: center;
    margin-bottom: 15px;
}

.port-forward-header {
    font-weight: bold;
    color: var(--text-color);
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.port-forward-rule input, .port-forward-rule select {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 0.9rem;
    background-color: var(--bg-color);
    color: var(--text-color);
}

.sub-form .form-group {
    max-width: 400px;
}

/* Responsive adjustments for port forwarding form */
@media (max-width: 768px) {
    .port-forward-header { display: none; }
    .port-forward-rule { grid-template-columns: 1fr; }

    /* Responsive Connection Diagrams */
    .diagram-row {
        flex-direction: column;
        gap: 20px;
    }

    .diagram-arrow {
        flex-grow: 0;
    }

    .diagram-arrow svg {
        transform: rotate(90deg);
        height: 40px;
        width: 40px;
    }
}

fieldset {
    border: none;
    padding: 0;
    margin: 0;
}

/* Speedtest Page */
.test-conditions {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 30px;
    margin: 30px 0;
}

.test-conditions ul {
    list-style-position: inside;
    padding-left: 0;
    margin-bottom: 1rem;
}

.speedtest-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.result-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 25px;
}

.result-card h4 {
    margin-top: 0;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    margin-bottom: 20px;
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.result-label {
    color: var(--text-muted-color);
}

.result-speed {
    font-weight: bold;
}

.result-speed.with-service {
    color: var(--primary-color);
}

.result-summary {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.improvement-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: #28a745;
}

/* Connection Diagram */
.diagram-container {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 30px;
    margin: 40px 0;
}

.diagram-title {
    text-align: center;
    font-weight: bold;
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--text-muted-color);
}

.diagram-title.with-service {
    color: var(--primary-color);
    margin-top: 40px;
}

.diagram-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.diagram-box {
    background-color: var(--bg-color);
    border: 2px solid var(--border-color);
    padding: 15px 25px;
    border-radius: 8px;
    text-align: center;
    font-weight: bold;
    flex-shrink: 0;
}

.diagram-box.special {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.diagram-box small {
    display: block;
    font-weight: 400;
    font-size: 0.8rem;
    color: var(--text-muted-color);
}

.diagram-arrow {
    flex-grow: 1;
    text-align: center;
    padding: 0 10px;
}

.diagram-arrow span {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.diagram-arrow.slow span { color: #dc3545; }
.diagram-arrow.fast span { color: #28a745; }

.diagram-arrow.congested-but-fast span {
    color: #28a745;
    font-weight: bold;
}

.diagram-arrow svg {
    width: 100%;
    height: 20px;
}

.diagram-arrow path {
    fill: none;
    stroke-linecap: round;
}

.diagram-arrow.slow path { stroke: #dc3545; stroke-width: 2; }
.diagram-arrow.fast path,
.diagram-arrow.congested-but-fast path {
    stroke: #28a745;
    stroke-width: 5;
}

/* Admin Panel Styles */
.admin-panel {
    background-color: #f4f6f9;
    color: #333;
    min-height: 100vh;
}

.admin-header {
    background-color: #343a40;
    color: white;
    padding: 1rem 0;
}

.admin-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.admin-logo {
    font-size: 1.2rem;
    font-weight: bold;
}

.admin-header .admin-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.admin-header nav a {
    color: #ccc;
    margin-left: 20px;
    text-decoration: none;
}

.admin-header nav a:hover {
    color: white;
}

.admin-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.admin-table th, .admin-table td {
    border: 1px solid #dee2e6;
    padding: 0.75rem;
    text-align: left;
}

.admin-table th {
    background-color: #e9ecef;
}

.btn-small {
    padding: 4px 8px;
    font-size: 0.8rem;
    border-radius: 3px;
    background-color: #6c757d;
    color: white;
    text-decoration: none;
}
.btn-small.btn-danger {
    background-color: #dc3545;
    border: none;
    cursor: pointer;
}

.admin-card {
    background-color: white;
    padding: 2rem;
    border-radius: 5px;
    margin-top: 2rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.admin-form {
    max-width: 500px;
}

/* Pricing Page */
.pricing-header {
    text-align: center;
    margin-bottom: 60px;
}

.pricing-header h1 {
    font-size: 3rem;
}

.pricing-header p {
    font-size: 1.2rem;
    color: var(--text-muted-color);
    max-width: 600px;
    margin: 0 auto;
}

.pricing-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: center;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    position: relative;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

.pricing-card.recommended {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
}

.recommended-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-color);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
}

.pricing-card h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-muted-color);
    margin-left: 5px;
}

.discount-info {
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: 20px;
}

.plan-features {
    list-style: none;
    padding: 0;
    margin: 30px 0;
    text-align: left;
    display: inline-block;
}

.plan-features li {
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
}

.plan-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

.guarantee-box {
    max-width: 800px;
    margin: 60px auto 0 auto;
    background-color: #e9f5ff;
    border: 1px solid #bde0ff;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
}

.guarantee-box h3 {
    color: var(--primary-hover-color);
    margin-top: 0;
}

@media (max-width: 768px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    .pricing-card.recommended {
        transform: scale(1);
        margin-top: 30px;
    }
}

/* Payment Options on Account Page */
.payment-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 30px;
}

.payment-option {
    text-align: center;
}

.payment-option h4 {
    margin-bottom: 15px;
}

.payment-option p {
    margin-bottom: 10px;
}

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

/* Spinner for loading states */
.spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border-left-color: var(--primary-color);
    animation: spin 1s ease infinite;
    margin-left: auto;
    margin-right: auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Performance Proof Section */
.performance-proof {
    text-align: center;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 40px 30px;
    margin: 80px 0;
}

.performance-proof h2 {
    margin-top: 0;
}

.performance-proof p {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    color: var(--text-muted-color);
    margin-bottom: 40px;
}

.proof-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

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

.proof-card {
    background-color: var(--bg-color);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.proof-card h4 {
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--text-muted-color);
}

.speeds {
    display: flex;
    justify-content: space-around;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.speed-item .label {
    font-size: 0.8rem;
    color: var(--text-muted-color);
    display: block;
}

.speed-item .value {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.2;
}

.speed-item.improved .value {
    color: var(--primary-color);
}

.arrow {
    font-size: 2rem;
    color: var(--text-muted-color);
}

.improvement {
    font-weight: 700;
    font-size: 1.2rem;
    color: #28a745;
    background-color: #d4edda;
    padding: 5px 10px;
    border-radius: 20px;
    display: inline-block;
}

.proof-cta {
    margin-top: 40px;
}

/* Responsive Video Embed */
.video-container {
    position: relative;
    overflow: hidden;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    margin-top: 20px;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* Tabbed Interface */
.tabs-container {
    margin-top: 20px;
}

.tabs-nav {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 25px;
}

.tab-link {
    padding: 10px 20px;
    cursor: pointer;
    border: 2px solid transparent;
    border-bottom: none;
    margin-bottom: -2px;
    font-weight: bold;
    color: var(--text-muted-color);
    text-decoration: none;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.tab-link:hover {
    color: var(--text-color);
    text-decoration: none;
}

.tab-link.is-active {
    color: var(--primary-color);
    border-color: var(--border-color);
    border-top-left-radius: 5px;
    border-top-right-radius: 5px;
    background-color: var(--surface-color);
}

.tab-content {
    display: none;
}

.tab-content.is-active {
    display: block;
}
.region-list {
    list-style: none;
    padding: 0;
    margin-top: 20px;
    column-count: 2;
    column-gap: 30px;
}

.region-list li {
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
}

.region-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

@media (max-width: 500px) {
    .region-list {
        column-count: 1;
    }
}