:root {
    --color-primary: #1f7a8c;
    --color-primary-deep: #145f73;
    --color-secondary: #72b01d;
    --color-secondary-soft: #dff3c5;
    --color-accent: #ffd166;
    --color-surface: #ffffff;
    --color-surface-soft: #f5fbfd;
    --color-ink: #17324d;
    --color-ink-soft: #587086;
    --color-border: rgba(23, 50, 77, 0.1);
    --shadow-soft: 0 18px 48px rgba(16, 68, 101, 0.12);
    --shadow-card: 0 16px 34px rgba(18, 71, 104, 0.1);
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --transition-base: 220ms ease;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Be Vietnam Pro", sans-serif;
    color: var(--color-ink);
    overflow-x: hidden;
    background:
        radial-gradient(circle at top right, rgba(114, 176, 29, 0.18), transparent 26%),
        radial-gradient(circle at top left, rgba(31, 122, 140, 0.18), transparent 28%),
        linear-gradient(180deg, #f8fdff 0%, #eef8fb 100%);
}

a {
    color: inherit;
    text-decoration: none;
}

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

iframe {
    border: 0;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(23, 50, 77, 0.06);
}

.navbar-brand {
    max-width: 460px;
    min-width: 0;
    flex-shrink: 1;
}

.brand-logos {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    flex-shrink: 0;
}

.brand-logo-frame {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    overflow: hidden;
    flex: 0 0 64px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    box-shadow: 0 12px 30px rgba(31, 122, 140, 0.18);
}

.brand-logo-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.brand-logo-image--contain {
    object-fit: contain;
    padding: 0.2rem;
}

.brand-logo-frame--secondary {
    width: 64px;
    height: 64px;
    flex-basis: 64px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.98);
}

.brand-logo-frame--admin {
    box-shadow: none;
    background: rgba(255, 255, 255, 0.95);
}

.brand-mark {
    width: 52px;
    height: 52px;
    border-radius: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    box-shadow: 0 12px 30px rgba(31, 122, 140, 0.28);
}

.brand-mark__shield {
    width: 24px;
    height: 28px;
    background: #fff;
    clip-path: polygon(50% 0%, 100% 18%, 100% 58%, 50% 100%, 0% 58%, 0% 18%);
}

.brand-title {
    font-size: 1rem;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: 0.02em;
}

.brand-tagline {
    margin-top: 2px;
    color: var(--color-ink-soft);
    font-size: 0.78rem;
    line-height: 1.35;
}

.nav-link {
    font-weight: 600;
    color: var(--color-ink-soft);
    border-radius: 999px;
    padding: 0.65rem 1rem !important;
    white-space: nowrap;
    transition: color var(--transition-base), background-color var(--transition-base), transform var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary-deep);
    background: rgba(31, 122, 140, 0.1);
}

@media (min-width: 992px) {
    .navbar .container {
        gap: 1rem;
    }

    .navbar-brand {
        max-width: 320px;
    }

    .navbar-collapse {
        min-width: 0;
    }

    .navbar-nav {
        flex-wrap: nowrap !important;
        white-space: nowrap;
        overflow-x: auto;
        overflow-y: hidden;
        gap: 0.35rem !important;
        scrollbar-width: none;
    }

    .navbar-nav::-webkit-scrollbar {
        display: none;
    }

    .nav-link {
        font-size: 0.92rem;
        padding: 0.55rem 0.8rem !important;
        flex-shrink: 0;
    }
}

@media (max-width: 1399.98px) and (min-width: 992px) {
    .navbar .container {
        flex-wrap: wrap;
        align-items: center;
    }

    .navbar-brand {
        width: 100%;
        max-width: 100%;
        margin-right: 0;
    }

    .navbar-collapse {
        width: 100%;
        flex-basis: 100%;
        margin-top: 0.6rem;
    }

    .navbar-nav {
        width: 100%;
        justify-content: flex-start;
    }
}

.hero-section,
.page-hero {
    padding: 5.75rem 0 4rem;
}

.hero-section {
    position: relative;
    overflow: hidden;
}

.hero-section--with-image {
    padding: 1.25rem 0 2.5rem;
    background: transparent;
}

.hero-section::after {
    display: none;
}

.hero-banner-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0.5rem;
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.74);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}

.hero-banner-image {
    display: block;
    width: 100%;
    height: auto;
    max-height: min(70vh, 560px);
    object-fit: contain;
}

.hero-title,
.page-hero h1 {
    font-size: clamp(2.4rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.04;
    letter-spacing: -0.03em;
    margin: 1rem 0;
}

.hero-tagline,
.page-hero p {
    font-size: 1.18rem;
    font-weight: 600;
    line-height: 1.7;
    color: var(--color-primary-deep);
}

.hero-description {
    max-width: 680px;
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-ink-soft);
    margin-bottom: 2rem;
}

.hero-actions,
.cta-actions,
.card-actions,
.filter-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn {
    border-radius: 999px;
    padding: 0.85rem 1.35rem;
    font-weight: 700;
}

.btn-sm {
    padding: 0.6rem 1rem;
}

.btn-accent {
    background: var(--color-accent);
    color: var(--color-ink);
    border: 0;
    box-shadow: 0 14px 30px rgba(255, 209, 102, 0.28);
}

.btn-accent:hover {
    background: #ffc84a;
    color: var(--color-ink);
    transform: translateY(-1px);
}

.btn-outline-light-alt {
    color: var(--color-primary-deep);
    border: 1px solid rgba(31, 122, 140, 0.25);
    background: rgba(255, 255, 255, 0.75);
}

.btn-outline-light-alt:hover {
    color: var(--color-primary-deep);
    background: rgba(31, 122, 140, 0.08);
}

.hero-card,
.footer-panel,
.cta-panel,
.filter-panel,
.feedback-form,
.detail-content,
.side-panel,
.preview-shell {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-soft);
}

.hero-card {
    padding: 1.75rem;
}

.hero-card__item + .hero-card__item {
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-border);
}

.hero-card__label,
.section-chip,
.card-kicker,
.footer-eyebrow,
.timeline-step {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.4rem 0.75rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.section-chip,
.footer-eyebrow,
.timeline-step {
    color: var(--color-primary-deep);
    background: rgba(31, 122, 140, 0.12);
}

.hero-card__label,
.card-kicker {
    color: var(--color-secondary);
    background: rgba(114, 176, 29, 0.12);
}

.summary-section,
.notice-section,
.content-section,
.cta-section {
    padding: 0 0 4.5rem;
}

.summary-grid,
.info-grid,
.timeline-list,
.quiz-grid {
    display: grid;
    gap: 1.5rem;
}

.summary-grid,
.info-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.quiz-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.summary-card,
.info-card,
.content-card,
.timeline-item,
.quiz-card {
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}

.summary-card,
.info-card,
.timeline-item,
.quiz-card {
    padding: 1.5rem;
}

.summary-card h2,
.info-card h2,
.section-heading h2,
.cta-panel h2,
.footer-title,
.detail-content h2,
.quiz-card h2 {
    font-size: clamp(1.5rem, 2vw, 2.2rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 0.9rem;
}

.summary-card p,
.info-card p,
.section-heading p,
.content-card p,
.timeline-item p,
.cta-panel p,
.footer-text,
.footer-contact li,
.footer-links a,
.detail-content p,
.quiz-card p,
.side-note,
.side-list li {
    color: var(--color-ink-soft);
    line-height: 1.75;
}

.section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.section-heading p {
    max-width: 520px;
    margin: 0;
}

.section-muted {
    position: relative;
}

.section-muted::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.2), rgba(114, 176, 29, 0.06));
    z-index: -1;
}

.content-card {
    padding: 1.6rem;
    height: 100%;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.content-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 22px 46px rgba(16, 68, 101, 0.16);
}

.content-card--highlight {
    background: linear-gradient(180deg, rgba(31, 122, 140, 0.08), rgba(255, 255, 255, 0.96));
}

.content-card--thumb {
    padding: 0;
    overflow: hidden;
}

.thumb-link {
    display: block;
    height: 100%;
}

.thumb-media {
    aspect-ratio: 4 / 3;
    background: #edf6f8;
    overflow: hidden;
}

.thumb-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.content-card--thumb:hover .thumb-media img {
    transform: scale(1.03);
}

.thumb-body {
    padding: 1.15rem;
}

.thumb-body h3 {
    margin: 0.85rem 0 0;
}

.content-card h3,
.timeline-item h3,
.footer-heading,
.side-panel h3 {
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.45;
    margin: 1rem 0 0.75rem;
}

.card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-top: 1.2rem;
}

.card-meta span {
    display: inline-flex;
    align-items: center;
    padding: 0.45rem 0.7rem;
    border-radius: 999px;
    background: var(--color-surface-soft);
    color: var(--color-primary-deep);
    font-size: 0.84rem;
    font-weight: 600;
}

.card-actions {
    margin-top: 1.3rem;
}

.section-footer-link {
    margin-top: 1.6rem;
}

.section-footer-link a {
    color: var(--color-primary-deep);
    font-weight: 700;
}

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

.filter-panel,
.feedback-form,
.detail-content,
.side-panel {
    padding: 1.6rem;
}

.form-control,
.form-select,
.btn,
.nav-link {
    -webkit-tap-highlight-color: transparent;
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
}

.filter-grid--compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.filter-actions {
    margin-top: 1.2rem;
}

.results-bar {
    margin: 1.4rem 0 1.8rem;
    color: var(--color-primary-deep);
}

.empty-state {
    padding: 1.4rem 1.6rem;
    text-align: center;
    border-radius: var(--radius-md);
    border: 1px dashed rgba(31, 122, 140, 0.24);
    background: rgba(255, 255, 255, 0.7);
    color: var(--color-ink-soft);
}

.page-hero--inner {
    padding-top: 4.8rem;
}

.cta-panel {
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.detail-layout {
    display: grid;
    grid-template-columns: minmax(0, 2.1fr) minmax(280px, 0.9fr);
    gap: 1.8rem;
}

.detail-main {
    display: grid;
    gap: 1.5rem;
}

.detail-sidebar {
    min-width: 0;
}

.detail-sticky {
    position: sticky;
    top: 110px;
    display: grid;
    gap: 1rem;
}

.preview-shell {
    padding: 1.2rem;
    overflow: hidden;
}

.preview-shell--image img {
    width: 100%;
    border-radius: var(--radius-lg);
}

.preview-shell--placeholder {
    min-height: 280px;
    display: grid;
    align-content: center;
    gap: 1rem;
    justify-items: start;
}

.preview-shell--sm {
    min-height: 180px;
}

.info-pair-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.info-pair {
    padding: 1rem 1.1rem;
    border-radius: var(--radius-md);
    background: var(--color-surface-soft);
}

.info-pair span {
    display: block;
    color: var(--color-ink-soft);
    margin-bottom: 0.3rem;
}

.info-pair strong {
    color: var(--color-primary-deep);
}

.side-links,
.side-list {
    display: grid;
    gap: 0.7rem;
    padding-left: 1.1rem;
}

.side-links {
    padding-left: 0;
}

.side-links a {
    color: var(--color-primary-deep);
    font-weight: 600;
}

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

.video-frame {
    overflow: hidden;
    border-radius: var(--radius-lg);
}

.quiz-card {
    display: grid;
    gap: 1rem;
}

.quiz-card__header {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 1rem;
}

.quiz-card h2 {
    font-size: 1.22rem;
    margin: 0;
}

.quiz-options {
    display: grid;
    gap: 0.9rem;
}

.quiz-option {
    display: flex;
    gap: 0.85rem;
    align-items: start;
    padding: 0.95rem 1rem;
    border-radius: var(--radius-md);
    background: rgba(245, 251, 253, 0.9);
    border: 1px solid rgba(31, 122, 140, 0.1);
    cursor: pointer;
    transition: border-color var(--transition-base), background-color var(--transition-base), transform var(--transition-base);
}

.quiz-option:hover {
    transform: translateY(-1px);
    border-color: rgba(31, 122, 140, 0.22);
}

.quiz-option input {
    margin-top: 0.25rem;
}

.quiz-option.is-correct {
    border-color: rgba(114, 176, 29, 0.5);
    background: rgba(223, 243, 197, 0.75);
}

.quiz-option.is-incorrect {
    border-color: rgba(215, 67, 67, 0.42);
    background: rgba(255, 232, 232, 0.9);
}

.quiz-result {
    padding: 1rem 1.1rem;
    border-radius: var(--radius-md);
    background: var(--color-surface-soft);
}

.quiz-result.is-correct {
    background: rgba(223, 243, 197, 0.75);
}

.quiz-result.is-incorrect {
    background: rgba(255, 232, 232, 0.9);
}

.quiz-result.is-neutral {
    background: rgba(255, 243, 205, 0.9);
}

.feedback-form .form-control,
.feedback-form .form-select,
.filter-panel .form-control,
.filter-panel .form-select {
    min-height: 52px;
    border-radius: 16px;
    border-color: rgba(31, 122, 140, 0.12);
}

.feedback-form textarea.form-control {
    min-height: 170px;
}

.article-content p + p {
    margin-top: 1rem;
}

.article-content img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 1rem auto;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(16, 24, 40, 0.12);
}

.site-footer {
    padding: 1rem 0 2.4rem;
}

.footer-panel {
    padding: 2rem;
}

.footer-heading {
    margin-top: 0.1rem;
}

.footer-links,
.footer-contact {
    display: grid;
    gap: 0.75rem;
}

.footer-links a:hover,
.footer-contact a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.75rem;
    padding-top: 1.2rem;
    color: var(--color-ink-soft);
    font-size: 0.95rem;
}

.admin-body {
    background: #eef5f8;
}

.admin-shell {
    display: grid;
    grid-template-columns: 290px minmax(0, 1fr);
    min-height: 100vh;
}

.admin-sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 1.5rem;
    background: linear-gradient(180deg, #17324d 0%, #10273d 100%);
    color: #fff;
    display: grid;
    align-content: start;
    gap: 1.5rem;
}

.admin-sidebar__brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: #fff;
}

.admin-sidebar__brand small {
    display: block;
    color: rgba(255, 255, 255, 0.72);
}

.admin-nav {
    display: grid;
    gap: 0.55rem;
}

.admin-nav__link {
    padding: 0.85rem 1rem;
    border-radius: 16px;
    color: rgba(255, 255, 255, 0.86);
    font-weight: 600;
    transition: background-color var(--transition-base), color var(--transition-base);
}

.admin-nav__link:hover,
.admin-nav__link.active {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

.admin-sidebar__footer a {
    color: rgba(255, 255, 255, 0.78);
}

.admin-main {
    min-width: 0;
    padding: 1.5rem;
}

.admin-topbar {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: 1rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    background: rgba(255, 255, 255, 0.92);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
}

.admin-topbar__eyebrow {
    margin: 0 0 0.35rem;
    color: var(--color-ink-soft);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    font-weight: 700;
}

.admin-topbar__title {
    margin: 0;
    font-size: clamp(1.5rem, 2.5vw, 2.4rem);
    font-weight: 800;
}

.admin-topbar__user {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 600;
}

.admin-content {
    display: grid;
    gap: 1.5rem;
}

.admin-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.admin-stat-card,
.admin-panel {
    background: rgba(255, 255, 255, 0.94);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
    padding: 1.4rem;
}

.admin-stat-card strong {
    display: block;
    margin: 1rem 0 0.35rem;
    font-size: 2rem;
    color: var(--color-primary-deep);
}

.admin-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
}

.admin-grid-2--wide {
    align-items: start;
}

.admin-panel__head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.admin-panel__head h2 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 800;
}

.admin-panel__head a {
    color: var(--color-primary-deep);
    font-weight: 700;
}

.admin-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    align-items: center;
}

.admin-inline-filter {
    margin: 0;
}

.admin-inline-filter .form-select {
    min-width: 180px;
}

.admin-editor-tools {
    margin-bottom: 1rem;
    padding: 1rem;
    border: 1px solid rgba(31, 122, 140, 0.14);
    border-radius: 18px;
    background: rgba(247, 252, 255, 0.9);
}

.admin-editor-note {
    margin-top: 0.75rem;
    color: var(--color-ink-soft);
    font-size: 0.92rem;
}

.admin-table {
    margin: 0;
}

.admin-table th {
    color: var(--color-ink-soft);
    font-size: 0.84rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom-width: 1px;
}

.admin-table__detail-row td {
    background: rgba(245, 251, 253, 0.9);
    color: var(--color-ink-soft);
    border-top: 0;
}

.admin-login-body {
    min-height: 100vh;
    margin: 0;
    display: grid;
    place-items: center;
    background:
        radial-gradient(circle at top left, rgba(114, 176, 29, 0.18), transparent 25%),
        radial-gradient(circle at bottom right, rgba(31, 122, 140, 0.18), transparent 25%),
        linear-gradient(180deg, #f7fcff 0%, #eaf3f8 100%);
}

.admin-login-shell {
    width: min(100%, 460px);
    padding: 1.25rem;
}

.admin-login-card {
    background: rgba(255, 255, 255, 0.96);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-soft);
    padding: 2rem;
}

.admin-login-card__brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.admin-login-card__brand strong {
    display: block;
    font-size: 1.15rem;
}

.admin-login-card__brand p,
.admin-login-card__footer a {
    color: var(--color-ink-soft);
}

.admin-login-card__footer {
    margin-top: 1.25rem;
    text-align: center;
}

@media (max-width: 1199.98px) {
    .brand-tagline {
        display: none;
    }

    .filter-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .admin-stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 991.98px) {
    .hero-section,
    .page-hero {
        padding-top: 4.2rem;
    }

    .summary-grid,
    .info-grid,
    .quiz-grid,
    .detail-layout {
        grid-template-columns: 1fr;
    }

    .section-heading,
    .cta-panel,
    .quiz-card__header {
        align-items: start;
        flex-direction: column;
    }

    .detail-sticky {
        position: static;
    }

    .admin-shell,
    .admin-grid-2,
    .admin-stats-grid {
        grid-template-columns: 1fr;
    }

    .admin-sidebar {
        position: static;
        height: auto;
    }

    .navbar-collapse {
        margin-top: 1rem;
        padding: 1rem;
        border-radius: 20px;
        background: rgba(255, 255, 255, 0.96);
        box-shadow: var(--shadow-card);
    }

    .navbar-nav {
        gap: 0.35rem !important;
    }

    .nav-link {
        width: 100%;
        text-align: left;
        white-space: nowrap;
    }
}

@media (max-width: 767.98px) {
    .summary-grid,
    .info-grid,
    .filter-grid,
    .filter-grid--compact,
    .info-pair-grid {
        grid-template-columns: 1fr;
    }

    .brand-tagline {
        display: none;
    }

    .site-header {
        backdrop-filter: blur(10px);
    }

    .navbar .container {
        align-items: center;
    }

    .navbar-brand {
        max-width: calc(100% - 64px);
        gap: 0.75rem !important;
    }

    .brand-logos {
        gap: 0.45rem;
    }

    .brand-logo-frame {
        width: 48px;
        height: 48px;
        flex-basis: 48px;
        border-radius: 14px;
    }

    .brand-logo-frame--secondary {
        width: 48px;
        height: 48px;
        flex-basis: 48px;
        border-radius: 14px;
    }

    .brand-title {
        font-size: 0.9rem;
        line-height: 1.25;
    }

    .hero-title,
    .page-hero h1 {
        font-size: 2.2rem;
    }

    .hero-tagline,
    .page-hero p {
        font-size: 1.02rem;
    }

    .footer-panel,
    .cta-panel,
    .hero-card,
    .content-card,
    .summary-card,
    .info-card,
    .timeline-item,
    .filter-panel,
    .feedback-form,
    .detail-content,
    .side-panel,
    .quiz-card,
    .preview-shell,
    .admin-panel,
    .admin-stat-card,
    .admin-login-card,
    .admin-topbar {
        padding: 1.35rem;
    }

    .admin-topbar,
    .admin-topbar__user,
    .admin-panel__head {
        flex-direction: column;
        align-items: start;
    }

    .hero-section,
    .page-hero {
        padding: 1rem 0 2rem;
    }

    .hero-section--with-image {
        padding: 0.75rem 0 1.5rem;
    }

    .hero-banner-wrap {
        padding: 0.25rem;
        border-radius: 20px;
    }

    .hero-banner-image {
        max-height: 42vh;
    }

    .summary-section,
    .notice-section,
    .content-section,
    .cta-section {
        padding: 0 0 2.75rem;
    }

    .section-heading {
        gap: 0.9rem;
        margin-bottom: 1.35rem;
    }

    .section-heading h2,
    .cta-panel h2,
    .footer-title,
    .detail-content h2 {
        font-size: 1.45rem;
    }

    .summary-card h2,
    .info-card h2 {
        font-size: 1.3rem;
    }

    .card-meta {
        gap: 0.5rem;
    }

    .card-meta span {
        font-size: 0.78rem;
        padding: 0.42rem 0.62rem;
    }

    .card-actions,
    .hero-actions,
    .cta-actions,
    .filter-actions {
        gap: 0.75rem;
    }

    .hero-actions .btn,
    .cta-actions .btn,
    .card-actions .btn,
    .filter-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .detail-layout {
        gap: 1rem;
    }

    .detail-main {
        gap: 1rem;
    }

    .preview-shell--placeholder {
        min-height: 220px;
    }

    .results-bar {
        margin: 1rem 0 1.25rem;
        font-size: 0.95rem;
    }

    .feedback-form textarea.form-control,
    .detail-content textarea.form-control,
    .admin-panel textarea.form-control {
        min-height: 140px;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: start;
        gap: 0.45rem;
        font-size: 0.88rem;
    }

    .admin-main {
        padding: 1rem;
    }

    .admin-sidebar {
        padding: 1rem;
        gap: 1rem;
    }

    .admin-sidebar__brand {
        gap: 0.75rem;
    }

    .admin-nav__link {
        padding: 0.75rem 0.9rem;
    }
}

@media (max-width: 575.98px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .navbar {
        padding-top: 0.75rem !important;
        padding-bottom: 0.75rem !important;
    }

    .navbar-toggler {
        padding: 0.35rem 0.45rem;
    }

    .brand-logo-frame {
        width: 44px;
        height: 44px;
        flex-basis: 44px;
    }

    .brand-logo-frame--secondary {
        width: 44px;
        height: 44px;
        flex-basis: 44px;
    }

    .brand-title {
        font-size: 0.84rem;
    }

    .hero-section--with-image {
        padding-top: 0.5rem;
    }

    .hero-banner-wrap {
        border-radius: 16px;
    }

    .hero-banner-image {
        max-height: 34vh;
    }

    .page-hero h1 {
        font-size: 1.85rem;
    }

    .page-hero p,
    .hero-tagline,
    .hero-description {
        font-size: 0.98rem;
        line-height: 1.65;
    }

    .summary-card,
    .info-card,
    .content-card,
    .timeline-item,
    .quiz-card,
    .filter-panel,
    .feedback-form,
    .detail-content,
    .side-panel,
    .admin-panel,
    .admin-stat-card {
        border-radius: 18px;
    }

    .content-card h3,
    .timeline-item h3,
    .footer-heading,
    .side-panel h3 {
        font-size: 1.05rem;
    }

    .quiz-card h2 {
        font-size: 1.05rem;
    }

    .quiz-option {
        padding: 0.85rem 0.9rem;
    }

    .filter-panel,
    .feedback-form,
    .detail-content,
    .side-panel,
    .admin-panel,
    .admin-stat-card,
    .admin-topbar {
        padding: 1rem;
    }

    .admin-topbar__title {
        font-size: 1.35rem;
    }

    .admin-topbar__user {
        width: 100%;
    }

    .admin-topbar__user .btn {
        width: 100%;
    }

    .admin-login-shell {
        padding: 0.85rem;
    }

    .admin-login-card {
        padding: 1.25rem;
    }
}