:root {
    --bg: #eff8ff;
    --bg-soft: #f9fcff;
    --surface: rgba(255, 255, 255, 0.82);
    --surface-strong: #ffffff;
    --line: rgba(146, 184, 215, 0.35);
    --text: #17324d;
    --muted: #5f7690;
    --primary: #0f8bd7;
    --primary-strong: #0a67b7;
    --accent: #0f766e;
    --violet: #4f46e5;
    --shadow: 0 22px 60px rgba(32, 87, 136, 0.12);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 16px;
    --container: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "SUIT Variable", "Noto Sans KR", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(92, 197, 255, 0.28), transparent 30%),
        radial-gradient(circle at top right, rgba(103, 80, 255, 0.12), transparent 28%),
        linear-gradient(180deg, #f3fbff 0%, #eef6fb 52%, #f9fcff 100%);
    min-height: 100vh;
}

body.content-protected,
body.content-protected img,
body.content-protected video {
    -webkit-user-select: none;
    user-select: none;
    -webkit-user-drag: none;
}

body.content-protected.screen-guard-active main,
body.content-protected.screen-guard-active .science-layout-main,
body.content-protected.screen-guard-active .ppt-stage-wrap,
body.content-protected.screen-guard-active .container {
    filter: blur(14px);
}

.content-protect-badge {
    position: fixed;
    right: 18px;
    bottom: 18px;
    z-index: 1200;
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(23, 50, 77, 0.88);
    color: #fff;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    box-shadow: 0 14px 30px rgba(23, 50, 77, 0.2);
    pointer-events: none;
}

.content-protect-toast {
    position: fixed;
    left: 50%;
    bottom: 28px;
    z-index: 1300;
    transform: translateX(-50%) translateY(18px);
    padding: 12px 16px;
    border-radius: 14px;
    background: rgba(12, 30, 48, 0.94);
    color: #fff;
    font-size: 0.92rem;
    font-weight: 600;
    box-shadow: 0 16px 34px rgba(12, 30, 48, 0.24);
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease, transform 180ms ease;
}

.content-protect-toast.is-visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

@media print {
    body.content-protected * {
        display: none !important;
    }

    body.content-protected::before {
        content: "보호된 교안은 인쇄하거나 PDF로 저장할 수 없습니다.";
        display: block;
        padding: 48px 24px;
        color: #17324d;
        font-size: 18px;
        font-weight: 700;
    }
}

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

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

button,
select {
    font: inherit;
}

.site-shell {
    position: relative;
    overflow-x: hidden;
    overflow-y: visible;
}

.site-shell::before,
.site-shell::after {
    content: "";
    position: fixed;
    z-index: -1;
    border-radius: 999px;
    filter: blur(30px);
    opacity: 0.45;
}

.site-shell::before {
    width: 360px;
    height: 360px;
    top: -120px;
    right: -100px;
    background: rgba(73, 184, 255, 0.32);
}

.site-shell::after {
    width: 300px;
    height: 300px;
    bottom: -90px;
    left: -60px;
    background: rgba(103, 80, 255, 0.14);
}

.container {
    width: min(calc(100% - 32px), var(--container));
    margin: 0 auto;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 30;
    backdrop-filter: blur(18px);
    background: rgba(245, 251, 255, 0.72);
    border-bottom: 1px solid rgba(186, 215, 238, 0.45);
}

.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 16px 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
    font-weight: 800;
}

.brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary) 0%, #3db7ff 100%);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 24px rgba(15, 139, 215, 0.24);
}

.brand-copy small,
.section-lead,
.eyebrow,
.meta,
.muted {
    color: var(--muted);
}

.brand-copy {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.brand-copy strong {
    font-size: 1rem;
}

.topnav {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.nav-link,
.ghost-link,
.chip {
    border: 1px solid transparent;
    border-radius: 999px;
    transition: 180ms ease;
}

.nav-link {
    padding: 10px 14px;
    color: var(--muted);
}

.nav-link:hover,
.nav-link.active {
    background: rgba(15, 139, 215, 0.1);
    border-color: rgba(15, 139, 215, 0.18);
    color: var(--primary-strong);
}

.hero {
    padding: 56px 0 30px;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
    gap: 24px;
    align-items: stretch;
}

.glass-card,
.panel,
.chapter-card,
.media-card,
.info-card,
.metric-card,
.feature-card,
.timeline-card {
    background: var(--surface);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    backdrop-filter: blur(16px);
}

.glass-card {
    border-radius: 34px;
    padding: 34px;
    position: relative;
    overflow: hidden;
}

.glass-card::after {
    content: "";
    position: absolute;
    inset: auto -40px -90px auto;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.14) 0%, transparent 68%);
    pointer-events: none;
}

.glass-card > * {
    position: relative;
    z-index: 1;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.hero h1,
.section-head h2,
.chapter-hero h1 {
    margin: 0;
    line-height: 1.08;
    letter-spacing: -0.03em;
}

.hero h1,
.chapter-hero h1 {
    font-size: clamp(2.4rem, 4vw, 4.6rem);
}

.hero p,
.chapter-hero p {
    font-size: 1.06rem;
    line-height: 1.75;
}

.hero-actions,
.button-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 24px;
}

.button,
.button-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border-radius: 16px;
    padding: 14px 18px;
    font-weight: 700;
    border: 1px solid transparent;
    transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button {
    color: #fff;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-strong) 100%);
    box-shadow: 0 18px 32px rgba(15, 139, 215, 0.24);
}

.button-secondary {
    color: var(--text);
    background: rgba(255, 255, 255, 0.72);
    border-color: rgba(156, 189, 216, 0.35);
}

.button:hover,
.button-secondary:hover,
.chapter-card:hover,
.feature-card:hover,
.media-card:hover {
    transform: translateY(-3px);
}

.hero-side {
    display: grid;
    gap: 18px;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.metric-card {
    border-radius: 24px;
    padding: 20px 20px 18px;
}

.metric-card strong {
    display: block;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-top: 12px;
}

.metric-card span {
    color: var(--muted);
    font-size: 0.92rem;
}

.feature-card,
.panel,
.chapter-card,
.media-card,
.timeline-card,
.info-card {
    border-radius: var(--radius-xl);
}

.feature-card {
    padding: 22px;
}

.feature-card h3,
.panel h3,
.chapter-card h3,
.media-card h3,
.info-card h3 {
    margin: 0 0 10px;
    font-size: 1.1rem;
}

.section {
    padding: 20px 0 34px;
}

.section-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 20px;
}

.section-head h2 {
    font-size: clamp(1.7rem, 3vw, 2.6rem);
}

.section-lead {
    max-width: 720px;
    line-height: 1.7;
}

.program-grid,
.feature-grid,
.chapter-grid,
.info-grid,
.media-grid {
    display: grid;
    gap: 18px;
}

.program-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.feature-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

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

.info-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.media-grid {
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
}

.lesson-section-grid {
    display: grid;
    gap: 18px;
}

.lesson-block {
    padding: 24px;
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(146, 184, 215, 0.32);
    box-shadow: var(--shadow);
}

.lesson-block-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.lesson-block-head h3 {
    margin: 0;
    font-size: 1.25rem;
}

.lesson-block p {
    margin: 0 0 18px;
    color: var(--muted);
    line-height: 1.7;
}

.lesson-slide-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
}

.lesson-slide-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 10px;
    border-radius: 18px;
    background: rgba(245, 251, 255, 0.9);
    border: 1px solid rgba(146, 184, 215, 0.26);
    transition: transform 180ms ease, box-shadow 180ms ease;
    width: 100%;
    text-align: left;
    cursor: pointer;
}

.lesson-slide-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(32, 87, 136, 0.12);
}

.lesson-slide-card img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: 12px;
    background: #eaf5ff;
}

.lesson-slide-card span {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--primary-strong);
}

.resource-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.ppt-viewer-shell {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
}

.ppt-sidebar,
.ppt-stage-wrap {
    background: rgba(255, 255, 255, 0.84);
    border: 1px solid rgba(146, 184, 215, 0.32);
    box-shadow: var(--shadow);
    border-radius: 24px;
}

.ppt-sidebar {
    padding: 16px;
    position: sticky;
    top: 96px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

.ppt-sidebar-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 14px;
}

.ppt-sidebar-list {
    display: grid;
    gap: 10px;
}

.ppt-sidebar-item {
    display: grid;
    gap: 6px;
    width: 100%;
    text-align: left;
    padding: 12px;
    border-radius: 16px;
    border: 1px solid rgba(146, 184, 215, 0.24);
    background: rgba(245, 251, 255, 0.76);
    cursor: pointer;
}

.ppt-sidebar-thumb {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: 12px;
    background: #ddefff;
    border: 1px solid rgba(146, 184, 215, 0.18);
}

.ppt-sidebar-video-thumb {
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: #ffffff;
    background: linear-gradient(135deg, #0f172a 0%, #1d4ed8 100%);
}

.ppt-sidebar-item.active {
    border-color: rgba(15, 139, 215, 0.42);
    background: rgba(222, 243, 255, 0.95);
}

.ppt-sidebar-item strong {
    font-size: 0.97rem;
}

.ppt-sidebar-item small {
    color: var(--muted);
}

.ppt-stage-wrap {
    padding: 20px;
}

.lesson-cover-panel {
    padding: 14px;
}

.lesson-cover-panel img {
    width: 100%;
    border-radius: 18px;
    display: block;
    background: #fff;
}

.ppt-stage-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 14px;
}

.ppt-stage {
    background: #edf6ff;
    border-radius: 20px;
    padding: 12px;
    min-height: 72vh;
}

.ppt-image-button {
    position: relative;
    display: block;
    width: 100%;
    border: 0;
    background: transparent;
    padding: 0;
    cursor: zoom-in;
}

.ppt-image-button img {
    width: 100%;
    max-height: calc(100vh - 210px);
    object-fit: contain;
    border-radius: 16px;
    background: #fff;
}

.ppt-embed {
    position: relative;
    width: 100%;
    min-height: min(78vh, 920px);
    aspect-ratio: 16 / 10;
    background: #000;
    border-radius: 16px;
    overflow: hidden;
}

.protected-watermark-host {
    position: relative;
    overflow: hidden;
}

.protected-watermark-host::after {
    content: attr(data-protect-label);
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    color: rgba(88, 103, 120, 0.16);
    font-size: clamp(1.3rem, 2.6vw, 2.4rem);
    font-weight: 800;
    line-height: 1.75;
    letter-spacing: 0.14em;
    text-align: center;
    text-shadow:
        0 1px 0 rgba(255, 255, 255, 0.28),
        0 2px 10px rgba(0, 0, 0, 0.04);
    transform: rotate(-22deg) scale(1.02);
    pointer-events: none;
    z-index: 2;
    white-space: pre-line;
    -webkit-user-select: none;
    user-select: none;
}

.protected-watermark-host::before {
    content: attr(data-protect-id);
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 14px;
    padding: 8px 12px;
    border-radius: 12px;
    background: rgba(18, 31, 46, 0.1);
    color: rgba(42, 61, 82, 0.58);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    line-height: 1.45;
    text-align: right;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.24);
    pointer-events: none;
    z-index: 3;
}

.ppt-image-button img,
.ppt-embed video,
.ppt-embed iframe,
.media-thumb img,
.media-thumb iframe {
    position: relative;
    z-index: 1;
}

.ppt-stage .protected-watermark-host::after,
.ppt-embed.protected-watermark-host::after,
.ppt-image-button.protected-watermark-host::after {
    color: rgba(70, 86, 102, 0.2);
    font-size: clamp(1.4rem, 2.8vw, 2.7rem);
}

.ppt-embed iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

.ppt-embed video {
    width: 100%;
    height: 100%;
    display: block;
    background: #000;
}

.ppt-stage:fullscreen,
.ppt-stage-wrap:fullscreen,
.ppt-embed:fullscreen,
.ppt-stage video:fullscreen,
.ppt-stage iframe:fullscreen {
    background: #000;
}

.ppt-stage-wrap:fullscreen {
    width: 100vw;
    height: 100vh;
    padding: 16px;
    border-radius: 0;
    box-sizing: border-box;
    display: grid;
    grid-template-rows: auto 1fr;
    gap: 14px;
}

.ppt-stage-wrap:fullscreen .ppt-stage {
    min-height: 0;
    height: 100%;
}

.ppt-stage-wrap:fullscreen .ppt-stage-head {
    margin-bottom: 0;
    color: #fff;
}

.ppt-stage-wrap:fullscreen .ppt-stage-head .muted {
    color: rgba(255, 255, 255, 0.76);
}

.ppt-stage:fullscreen {
    padding: 0;
    border-radius: 0;
    width: 100vw;
    height: 100vh;
}

.ppt-stage:fullscreen .ppt-image-button,
.ppt-stage:fullscreen .ppt-image-button img,
.ppt-stage:fullscreen .ppt-embed,
.ppt-stage:fullscreen .ppt-embed video,
.ppt-stage:fullscreen .ppt-embed iframe {
    width: 100%;
    height: 100%;
    max-height: 100vh;
    border-radius: 0;
}

.slide-viewer {
    position: fixed;
    inset: 0;
    background: rgba(8, 18, 33, 0.82);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    z-index: 120;
}

.slide-viewer.active {
    display: flex;
}

.slide-viewer-dialog {
    width: min(1100px, 100%);
    background: rgba(255, 255, 255, 0.98);
    border-radius: 24px;
    border: 1px solid rgba(146, 184, 215, 0.28);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
    overflow: hidden;
}

.slide-viewer-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 18px;
    border-bottom: 1px solid rgba(146, 184, 215, 0.22);
}

.slide-viewer-top strong {
    font-size: 1rem;
}

.slide-viewer-stage {
    padding: 18px;
    background: #eef6ff;
}

.slide-viewer-stage img {
    width: 100%;
    max-height: 75vh;
    object-fit: contain;
    border-radius: 18px;
    background: #fff;
}

.slide-viewer-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 16px 18px 20px;
}

.slide-viewer-nav {
    display: flex;
    gap: 10px;
}

.program-card,
.chapter-card,
.media-card {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 22px;
}

.program-card {
    min-height: 100%;
}

.program-card-visual {
    width: 100%;
    border-radius: 22px;
    overflow: hidden;
    background: linear-gradient(180deg, #f8fbff 0%, #eef5ff 100%);
    border: 1px solid rgba(156, 189, 216, 0.2);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.program-card-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.program-card-dual-visual {
    display: flex !important;
    flex-direction: row;
    gap: 8px;
    padding: 12px;
    overflow: hidden;
    background: linear-gradient(135deg, #e8f4ff 0%, #ede9fe 100%);
    align-items: center;
}

.program-card-dual-visual img {
    flex: 1;
    min-width: 0;
    height: 100%;
    width: 50%;
    object-fit: contain;
    object-position: center;
    border-radius: 8px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.14);
    transition: transform 300ms ease;
}

.program-card:hover .program-card-dual-visual img:first-child { transform: translateX(-6px) rotate(-2deg); }
.program-card:hover .program-card-dual-visual img:last-child  { transform: translateX(6px) rotate(2deg); }

.program-card-visual-placeholder {
    padding: 24px;
    text-align: center;
}

.program-card-visual-placeholder span {
    font-weight: 800;
    color: var(--muted);
    line-height: 1.5;
}

.card-badge,
.chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(15, 139, 215, 0.1);
    color: var(--primary-strong);
    font-weight: 700;
    font-size: 0.82rem;
}

.chip.alt {
    background: rgba(79, 70, 229, 0.1);
    color: var(--violet);
}

.chip.chip-energy {
    background: #fff4c7;
    color: #b76a00;
    border-color: rgba(234, 179, 8, 0.16);
}

.chip.chip-structure {
    background: #dcecff;
    color: #2b64c8;
    border-color: rgba(59, 130, 246, 0.16);
}

.chip.chip-thinking {
    background: #efe2ff;
    color: #8a39d3;
    border-color: rgba(168, 85, 247, 0.18);
}

.chip.chip-motion {
    background: #dcfce7;
    color: #15803d;
    border-color: rgba(34, 197, 94, 0.16);
}

.chip.chip-creative {
    background: #ffe4eb;
    color: #c24176;
    border-color: rgba(236, 72, 153, 0.16);
}

.chip.dim {
    background: rgba(23, 50, 77, 0.08);
    color: var(--muted);
}

.card-title {
    font-size: 1.45rem;
    margin: 0;
}

.card-description,
.chapter-card p,
.panel p,
.media-copy,
.info-card p {
    line-height: 1.72;
    color: var(--muted);
}

.tag-list,
.bullet-list,
.meta-list,
.timeline-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.tag-list {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag-list li {
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(15, 118, 110, 0.1);
    color: var(--accent);
    font-size: 0.86rem;
    font-weight: 700;
}

.program-footer,
.chapter-footer {
    margin-top: auto;
    padding-top: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.chapter-card .status {
    font-size: 0.88rem;
    font-weight: 700;
}

.status.ready {
    color: var(--primary-strong);
}

.status.preparing {
    color: #b7791f;
}

.panel {
    padding: 26px;
}

.split-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.8fr);
    gap: 20px;
}

.hero-visual {
    min-height: 260px;
    border-radius: 24px;
    overflow: hidden;
    position: relative;
    background:
        linear-gradient(160deg, rgba(15, 139, 215, 0.14), rgba(79, 70, 229, 0.08)),
        url("./images/slide1.jpg") center/cover no-repeat;
}

.hero-visual::after {
    content: "";
    position: absolute;
    inset: auto 20px 20px auto;
    width: 140px;
    height: 140px;
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.1));
    border: 1px solid rgba(255, 255, 255, 0.35);
}

.chapter-hero {
    padding: 44px 0 28px;
}

.chapter-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
    gap: 24px;
    align-items: start;
}

.summary-panel {
    display: grid;
    gap: 18px;
}

.meta-list {
    display: grid;
    gap: 12px;
}

.meta-list li {
    display: flex;
    align-items: start;
    gap: 12px;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.65);
    border-radius: 18px;
    border: 1px solid rgba(156, 189, 216, 0.22);
}

.bullet-list {
    display: grid;
    gap: 10px;
}

.bullet-list li {
    padding-left: 18px;
    position: relative;
    line-height: 1.7;
}

.bullet-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.72em;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #5fc8ff);
}

.timeline-list {
    display: grid;
    gap: 12px;
}

.timeline-list li {
    display: grid;
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 14px;
    align-items: start;
    padding: 14px 0;
    border-top: 1px solid rgba(156, 189, 216, 0.22);
}

.timeline-list li:first-child {
    border-top: 0;
    padding-top: 0;
}

.timeline-label {
    font-weight: 800;
    color: var(--primary-strong);
}

.media-thumb {
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, rgba(15, 139, 215, 0.12), rgba(79, 70, 229, 0.12));
    border: 1px solid rgba(156, 189, 216, 0.25);
}

.media-thumb img,
.media-thumb iframe {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border: 0;
}

.empty-state {
    padding: 26px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px dashed rgba(156, 189, 216, 0.5);
    color: var(--muted);
}

.footer {
    padding: 36px 0 54px;
    color: var(--muted);
}

.footer-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 20px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.62);
    border: 1px solid rgba(156, 189, 216, 0.22);
}

.science-main {
    padding-bottom: 24px;
}

.science-layout-page {
    background:
        radial-gradient(circle at top left, rgba(14, 165, 233, 0.16), transparent 24%),
        linear-gradient(180deg, #f0f9ff 0%, #eaf5ff 52%, #f7fbff 100%);
}

.science-layout {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    min-height: 100vh;
}

.science-sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 24px 18px;
    background: rgba(255, 255, 255, 0.92);
    border-right: 1px solid rgba(156, 189, 216, 0.24);
    box-shadow: 10px 0 40px rgba(32, 87, 136, 0.06);
    z-index: 20;
}

.science-sidebar-brand,
.science-sidebar-foot {
    padding: 12px 10px;
}

.science-home-link {
    display: inline-flex;
    width: 100%;
    padding: 12px 14px;
    border-radius: 16px;
    background: linear-gradient(135deg, #0f8bd7 0%, #0a67b7 100%);
    color: #fff;
    font-weight: 700;
    justify-content: center;
    margin-bottom: 18px;
}

.science-brand-block {
    display: flex;
    align-items: center;
    gap: 12px;
}

.science-side-nav {
    display: grid;
    gap: 10px;
    padding: 0 8px;
}

.science-side-link {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 14px 16px;
    border-radius: 18px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--muted);
    text-align: left;
    cursor: pointer;
    transition: 180ms ease;
}

.science-side-link:hover,
.science-side-link.active {
    color: var(--primary-strong);
    background: rgba(15, 139, 215, 0.1);
    border-color: rgba(15, 139, 215, 0.18);
}

.science-sidebar-foot {
    margin-top: auto;
    display: grid;
    gap: 6px;
    color: var(--muted);
    font-size: 0.92rem;
}

.science-layout-main {
    overflow-y: auto;
    height: 100vh;
    padding: 32px;
}

.science-content-shell {
    width: min(1180px, 100%);
    margin: 0 auto;
}

.science-page-head {
    display: grid;
    gap: 8px;
    margin-bottom: 28px;
}

.science-page-head h1 {
    margin: 0;
    font-size: clamp(2rem, 3vw, 3rem);
    line-height: 1.08;
    letter-spacing: -0.03em;
}

.science-page-head p {
    margin: 0;
    color: var(--muted);
    line-height: 1.7;
}

.science-page-head-split {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
}

.science-infographic-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.science-info-card {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 14px;
    align-items: start;
    padding: 22px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(156, 189, 216, 0.24);
    box-shadow: var(--shadow);
}

.science-info-card-accent {
    background: linear-gradient(135deg, rgba(15, 139, 215, 0.98) 0%, rgba(30, 58, 138, 0.98) 100%);
    color: #fff;
}

.science-info-card-accent p,
.science-info-card-accent h3 {
    color: #fff;
}

.science-info-card h3 {
    margin: 0 0 8px;
    font-size: 1.02rem;
}

.science-info-card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.7;
}

.science-info-icon {
    width: 56px;
    height: 56px;
    border-radius: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    background: rgba(15, 139, 215, 0.12);
}

.science-info-card-accent .science-info-icon {
    background: rgba(255, 255, 255, 0.16);
}

.science-curriculum-entry {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) 320px;
    gap: 20px;
    padding: 28px;
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(156, 189, 216, 0.24);
    box-shadow: var(--shadow);
}

.science-curriculum-entry-copy h2 {
    margin: 14px 0 12px;
    font-size: clamp(1.8rem, 2.8vw, 2.4rem);
}

.science-curriculum-entry-copy p {
    margin: 0;
    color: var(--muted);
    line-height: 1.8;
}

.science-curriculum-entry-thumb {
    display: block;
    overflow: hidden;
    border-radius: 24px;
    background: #fff;
    border: 1px solid rgba(156, 189, 216, 0.3);
    box-shadow: var(--shadow);
}

.science-curriculum-entry-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.science-issue-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
}

.science-curriculum-rows {
    display: grid;
    gap: 26px;
}

.science-issue-row {
    display: grid;
    gap: 16px;
}

.science-issue-row-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.science-issue-row-head h2 {
    margin: 12px 0 0;
    font-size: 1.7rem;
}

.science-week-inline-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.science-week-inline-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid rgba(156, 189, 216, 0.22);
    box-shadow: var(--shadow);
    transition: transform 180ms ease;
}

.science-week-inline-card:hover {
    transform: translateY(-3px);
}

.science-week-inline-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
}

.science-week-inline-image {
    overflow: hidden;
    border-radius: 18px;
    background: #eef6ff;
    border: 1px solid rgba(156, 189, 216, 0.18);
}

.science-week-inline-image img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    display: block;
}

.science-week-inline-body h3 {
    margin: 0 0 10px;
    font-size: 1.05rem;
    line-height: 1.35;
}

.science-week-inline-meta {
    display: grid;
    gap: 4px;
    padding: 10px 12px;
    margin-bottom: 8px;
    border-radius: 14px;
    background: #f7fbff;
    border: 1px solid rgba(156, 189, 216, 0.16);
}

.science-week-inline-meta span {
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--muted);
}

.science-week-inline-meta strong {
    font-size: 0.94rem;
    line-height: 1.45;
    color: var(--text);
}

.science-week-inline-body p {
    margin: 0;
    color: var(--muted);
    line-height: 1.68;
    font-size: 0.93rem;
}

.science-issue-card {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 20px;
    border-radius: 26px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(156, 189, 216, 0.24);
    box-shadow: var(--shadow);
    transition: transform 180ms ease;
}

.science-issue-card:hover {
    transform: translateY(-4px);
}

.science-issue-card h3 {
    margin: 0;
    font-size: 1.2rem;
}

.science-issue-card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.72;
}

.science-issue-card-image {
    overflow: hidden;
    border-radius: 20px;
    background: #eef6ff;
    border: 1px solid rgba(156, 189, 216, 0.18);
}

.science-issue-card-image img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    display: block;
}

.science-curriculum-focus {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) 280px;
    gap: 18px;
    padding: 28px;
    border-radius: 28px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.92) 0%, rgba(231, 245, 255, 0.92) 100%);
    border: 1px solid rgba(156, 189, 216, 0.26);
    box-shadow: var(--shadow);
    margin-bottom: 22px;
}

.science-curriculum-side {
    display: grid;
    gap: 12px;
}

.science-curriculum-image {
    display: block;
    overflow: hidden;
    border-radius: 24px;
    border: 1px solid rgba(156, 189, 216, 0.3);
    background: rgba(255, 255, 255, 0.86);
    box-shadow: var(--shadow);
}

.science-curriculum-image img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform 180ms ease;
}

.science-curriculum-image:hover img {
    transform: scale(1.03);
}

.science-curriculum-copy h2 {
    margin: 14px 0 12px;
    font-size: clamp(1.7rem, 2.8vw, 2.4rem);
}

.science-curriculum-copy p {
    margin: 0;
    color: var(--muted);
    line-height: 1.8;
}

.science-session-board {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: 18px;
}

.science-session-card {
    padding: 16px 18px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(156, 189, 216, 0.24);
}

.science-session-kicker {
    display: inline-flex;
    margin-bottom: 10px;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(15, 139, 215, 0.1);
    color: var(--primary-strong);
    font-size: 0.8rem;
    font-weight: 800;
}

.science-session-card p,
.science-session-goals {
    margin: 0;
    color: var(--muted);
    line-height: 1.7;
    font-size: 0.95rem;
}

.science-session-goals {
    padding-left: 18px;
}

.science-curriculum-stat {
    display: grid;
    gap: 12px;
}

.science-stat-pill {
    padding: 18px 20px;
    border-radius: 22px;
    background: linear-gradient(135deg, #0f8bd7 0%, #1d4ed8 100%);
    color: #fff;
    box-shadow: 0 18px 32px rgba(15, 139, 215, 0.2);
}

.science-stat-pill strong {
    display: block;
    font-size: 2rem;
    line-height: 1;
    margin-bottom: 6px;
}

.science-session-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 18px;
}

.science-issue-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
    gap: 22px;
    align-items: center;
    padding: 28px;
    border-radius: 30px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.96) 0%, rgba(232, 245, 255, 0.96) 100%);
    border: 1px solid rgba(156, 189, 216, 0.24);
    box-shadow: var(--shadow);
    margin-bottom: 26px;
}

.science-issue-hero-copy h1 {
    margin: 14px 0 12px;
    font-size: clamp(2rem, 3vw, 3rem);
}

.science-issue-hero-copy p {
    margin: 0;
    color: var(--muted);
    line-height: 1.8;
}

.science-issue-hero-art {
    overflow: hidden;
    border-radius: 24px;
    background: #fff;
    border: 1px solid rgba(156, 189, 216, 0.22);
}

.science-issue-hero-art img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    display: block;
}

.science-week-link-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
}

.science-week-link-card {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 20px;
    border-radius: 26px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(156, 189, 216, 0.24);
    box-shadow: var(--shadow);
}

.science-week-link-image {
    display: block;
    overflow: hidden;
    border-radius: 20px;
    background: #eef6ff;
    border: 1px solid rgba(156, 189, 216, 0.18);
}

.science-week-link-image img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    display: block;
}

.science-week-link-body h3 {
    margin: 0 0 10px;
    font-size: 1.1rem;
}

.science-week-link-body p {
    margin: 0;
    color: var(--muted);
    line-height: 1.72;
}

.science-session-detail {
    padding: 28px;
    margin-bottom: 22px;
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid rgba(156, 189, 216, 0.24);
    box-shadow: var(--shadow);
}

.science-session-detail h2 {
    margin: 14px 0 24px;
    font-size: clamp(2rem, 3vw, 2.6rem);
}

.science-session-summary-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.science-session-summary-card {
    padding: 20px 22px;
    border-radius: 20px;
    background: #f7fbff;
    border: 1px solid rgba(156, 189, 216, 0.18);
}

.science-session-summary-card strong {
    display: block;
    font-size: 1.2rem;
    line-height: 1.5;
    color: var(--text);
}

.science-session-showcase,
.science-session-goal-panel {
    margin-bottom: 24px;
}

.science-session-showcase h3,
.science-session-goal-panel h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 14px;
    font-size: 1.25rem;
}

.science-section-bar {
    width: 5px;
    height: 24px;
    border-radius: 999px;
    background: #0f8bd7;
}

.science-section-bar-purple {
    background: #6d28d9;
}

.science-session-showcase-image {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 320px;
    padding: 18px;
    border-radius: 22px;
    background: #fbfdff;
    border: 1px solid rgba(156, 189, 216, 0.22);
    overflow: hidden;
}

.science-session-showcase-image img {
    max-width: 100%;
    max-height: 320px;
    object-fit: contain;
    transition: transform 180ms ease;
}

.science-session-showcase-image:hover img {
    transform: scale(1.02);
}

.science-session-goals-panel {
    margin: 0;
    padding-left: 24px;
    color: var(--muted);
    line-height: 1.9;
    font-size: 1rem;
}

.science-session-link-card {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 20px;
    border-radius: 26px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(156, 189, 216, 0.24);
    box-shadow: var(--shadow);
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.science-session-link-card:hover {
    transform: translateY(-4px);
}

.science-session-link-card.is-disabled:hover {
    transform: none;
}

.science-session-link-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.science-session-link-image {
    overflow: hidden;
    border-radius: 22px;
    background: #eef6ff;
    border: 1px solid rgba(156, 189, 216, 0.2);
}

.science-session-link-image img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    display: block;
}

.science-session-link-placeholder {
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted);
    font-weight: 700;
}

.science-session-link-body h3 {
    margin: 0 0 10px;
    font-size: 1.12rem;
}

.science-session-link-body p {
    margin: 0;
    color: var(--muted);
    line-height: 1.72;
}

.science-session-link-card.is-disabled {
    opacity: 0.84;
}

.science-week-card {
    border: 1px solid rgba(15, 139, 215, 0.24);
}

.science-eval-card {
    border-top: 4px solid rgba(15, 139, 215, 0.82);
}

.science-mobile-toggle {
    display: none;
    position: fixed;
    top: 12px;
    right: 12px;
    z-index: 40;
    width: 48px;
    height: 48px;
    border: 0;
    border-radius: 14px;
    background: #0f8bd7;
    color: #fff;
    font-size: 1.3rem;
    box-shadow: 0 14px 28px rgba(15, 139, 215, 0.24);
}

.science-section.is-hidden {
    display: none;
}

.science-metric-grid {
    margin-bottom: 24px;
}

.science-chart-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.chart-shell {
    position: relative;
    width: 100%;
    min-height: 320px;
}

.science-hero-banner {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
    gap: 18px;
    padding: 28px;
    border-radius: 28px;
    background: linear-gradient(135deg, #0f5f9a 0%, #1e3a8a 100%);
    color: #fff;
    box-shadow: var(--shadow);
}

.science-hero-banner h3 {
    margin: 0 0 12px;
    font-size: 1.7rem;
}

.science-hero-banner p {
    margin: 0;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.88);
}

.science-hero-art {
    position: relative;
    min-height: 220px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.08);
    overflow: hidden;
}

.science-hero-cover {
    display: block;
    min-height: 220px;
    border-radius: 24px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 20px 40px rgba(7, 24, 55, 0.18);
}

.science-hero-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 180ms ease;
}

.science-hero-cover:hover img {
    transform: scale(1.03);
}

.science-orb {
    position: absolute;
    border-radius: 999px;
    filter: blur(8px);
}

.science-orb-a {
    width: 150px;
    height: 150px;
    top: 18px;
    right: 24px;
    background: rgba(96, 165, 250, 0.35);
}

.science-orb-b {
    width: 120px;
    height: 120px;
    bottom: 18px;
    left: 20px;
    background: rgba(59, 130, 246, 0.24);
}

.science-cardlet {
    position: absolute;
    padding: 12px 16px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.2);
    font-weight: 700;
    backdrop-filter: blur(8px);
}

.science-cardlet:nth-of-type(3) {
    top: 26px;
    left: 22px;
}

.science-cardlet:nth-of-type(4) {
    top: 92px;
    right: 34px;
}

.science-cardlet:nth-of-type(5) {
    bottom: 82px;
    left: 54px;
}

.science-cardlet:nth-of-type(6) {
    bottom: 24px;
    right: 28px;
}

.science-filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.science-filter-row .chip {
    cursor: pointer;
}

.science-filter-row .chip.active {
    background: rgba(15, 139, 215, 0.18);
    border-color: rgba(15, 139, 215, 0.28);
}

.evaluation-table-panel h3 {
    margin-top: 0;
}

.evaluation-table-wrap {
    overflow-x: auto;
}

.evaluation-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}

.evaluation-table th,
.evaluation-table td {
    padding: 14px 16px;
    border-top: 1px solid rgba(156, 189, 216, 0.24);
    text-align: left;
    vertical-align: top;
    line-height: 1.65;
}

.evaluation-table th {
    border-top: 0;
    background: rgba(239, 246, 255, 0.85);
}

.design-layout-page {
    background:
        radial-gradient(circle at top right, rgba(213, 162, 95, 0.12), transparent 24%),
        radial-gradient(circle at bottom left, rgba(196, 111, 66, 0.12), transparent 22%),
        #f6efe4;
}

.design-layout {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    min-height: 100vh;
}

.design-sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 24px 18px;
    background: rgba(92, 60, 43, 0.94);
    color: #fff8f1;
    display: flex;
    flex-direction: column;
    gap: 24px;
    border-right: 1px solid rgba(255, 241, 226, 0.12);
    box-shadow: 24px 0 40px rgba(68, 42, 29, 0.12);
    z-index: 10;
}

.design-sidebar-brand {
    display: grid;
    gap: 16px;
}

.design-sidebar .science-home-link {
    color: rgba(255, 248, 241, 0.82);
}

.design-sidebar .science-brand-block {
    padding: 18px;
    border-radius: 24px;
    background: rgba(255, 248, 241, 0.08);
    border: 1px solid rgba(255, 248, 241, 0.12);
}

.design-sidebar .brand-mark {
    background: linear-gradient(135deg, #d5a25f, #c56f42);
    color: #fff;
}

.design-sidebar .brand-copy strong,
.design-sidebar .brand-copy small {
    color: inherit;
}

.design-side-link {
    color: rgba(255, 248, 241, 0.8);
    background: transparent;
}

.design-side-link:hover,
.design-side-link.active {
    background: rgba(255, 248, 241, 0.12);
    color: #fff8f1;
    border-color: rgba(255, 248, 241, 0.16);
}

.design-sidebar-foot {
    margin-top: auto;
    color: rgba(255, 248, 241, 0.86);
    border-top-color: rgba(255, 248, 241, 0.14);
}

.design-layout-main {
    background: transparent;
}

.design-mobile-toggle {
    background: rgba(92, 60, 43, 0.95);
    color: #fff8f1;
}

.design-panel,
.design-metric-card,
.design-info-card,
.design-eval-card {
    border-color: rgba(174, 135, 106, 0.18);
    box-shadow: 0 18px 36px rgba(118, 78, 54, 0.08);
}

.design-metric-card {
    background: rgba(255, 251, 246, 0.92);
}

.design-info-card-accent {
    background: linear-gradient(135deg, #c56f42, #8d5a3a);
}

.design-hero-banner {
    background: linear-gradient(135deg, #7d5238, #c56f42);
}

.design-hero-art {
    position: relative;
    min-height: 220px;
    border-radius: 24px;
    background:
        linear-gradient(135deg, rgba(255, 248, 241, 0.12), rgba(255, 248, 241, 0.04)),
        rgba(255, 248, 241, 0.08);
    overflow: hidden;
}

.design-orb {
    position: absolute;
    border-radius: 999px;
    filter: blur(10px);
}

.design-orb-a {
    width: 170px;
    height: 170px;
    top: 16px;
    right: 18px;
    background: rgba(255, 215, 160, 0.3);
}

.design-orb-b {
    width: 132px;
    height: 132px;
    left: 24px;
    bottom: 20px;
    background: rgba(255, 245, 231, 0.18);
}

.design-cardlet {
    position: absolute;
    padding: 12px 16px;
    border-radius: 999px;
    background: rgba(255, 248, 241, 0.18);
    border: 1px solid rgba(255, 248, 241, 0.24);
    color: #fff8f1;
    font-weight: 700;
    letter-spacing: 0.04em;
    backdrop-filter: blur(6px);
}

.design-cardlet:nth-of-type(3) {
    left: 24px;
    top: 28px;
}

.design-cardlet:nth-of-type(4) {
    right: 30px;
    top: 88px;
}

.design-cardlet:nth-of-type(5) {
    left: 48px;
    bottom: 34px;
}

.design-cardlet:nth-of-type(6) {
    right: 28px;
    bottom: 28px;
}

.design-filter-row .chip.active {
    background: rgba(197, 111, 66, 0.16);
    border-color: rgba(197, 111, 66, 0.34);
}

.design-simple-hero {
    background: linear-gradient(135deg, rgba(255, 250, 244, 0.98) 0%, rgba(244, 233, 221, 0.96) 100%);
    border-color: rgba(174, 135, 106, 0.24);
}

.design-issue-hero-copy {
    width: 100%;
    min-height: 100%;
    display: grid;
    gap: 10px;
    align-content: center;
    padding: 24px;
    background: linear-gradient(135deg, #fffaf4, #f3e5d6);
}

.design-issue-hero-copy span {
    display: block;
    padding: 10px 14px;
    border-radius: 14px;
    background: rgba(197, 111, 66, 0.1);
    color: #5b4336;
    font-weight: 700;
}

.design-simple-hero-art,
.design-issue-card-art {
    display: grid;
    gap: 10px;
    align-content: center;
    justify-items: center;
    text-align: center;
    border-radius: 24px;
    padding: 22px;
    background: linear-gradient(135deg, #c56f42, #8d5a3a);
    color: rgba(255, 248, 241, 0.96);
}

.design-simple-hero-art span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 88px;
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.14);
    font-weight: 700;
}

.design-issue-card-art {
    min-height: 170px;
}

.design-issue-card-art strong {
    font-size: 2rem;
}

.design-issue-card-art small {
    font-size: 0.92rem;
    opacity: 0.92;
}

.design-issue-thumb {
    width: 100%;
    aspect-ratio: 4 / 3;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 8px;
    color: rgba(255, 248, 241, 0.96);
}

.design-issue-thumb strong {
    font-size: 1.5rem;
}

.design-issue-thumb small {
    font-size: 0.9rem;
    opacity: 0.92;
}

.design-inline-card {
    text-decoration: none;
}

.design-inline-thumb {
    width: 100%;
    aspect-ratio: 4 / 3;
    display: grid;
    align-content: center;
    justify-items: start;
    gap: 10px;
    padding: 22px;
    color: rgba(255, 248, 241, 0.96);
}

.design-inline-thumb strong {
    font-size: 1.3rem;
    line-height: 1.35;
}

.design-inline-thumb small {
    font-size: 0.92rem;
    opacity: 0.92;
}

.design-module-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.design-module-card {
    display: grid;
    gap: 12px;
    background: linear-gradient(180deg, rgba(255, 251, 246, 0.98), rgba(248, 239, 229, 0.9));
}

.design-module-head {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 12px;
}

.design-module-head h3,
.design-module-card p {
    margin: 0;
}

.design-module-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.design-session-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.design-session-card {
    text-align: left;
    border: 1px solid rgba(174, 135, 106, 0.18);
    border-radius: 28px;
    background: rgba(255, 251, 246, 0.94);
    padding: 18px;
    display: grid;
    gap: 14px;
    transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
    box-shadow: 0 18px 36px rgba(118, 78, 54, 0.08);
}

.design-session-card:hover {
    transform: translateY(-4px);
    border-color: rgba(197, 111, 66, 0.32);
    box-shadow: 0 24px 44px rgba(118, 78, 54, 0.12);
}

.design-session-card-head,
.design-session-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.design-session-number {
    font-size: 0.8rem;
    color: var(--muted);
    font-weight: 700;
}

.design-session-art {
    min-height: 120px;
    border-radius: 22px;
    display: grid;
    place-items: center;
    font-size: 1.8rem;
    font-weight: 800;
    color: rgba(255, 248, 241, 0.94);
    letter-spacing: 0.08em;
}

.design-category-person {
    background: linear-gradient(135deg, #c56f42, #a44d38);
}

.design-category-culture {
    background: linear-gradient(135deg, #b8833f, #d5a25f);
}

.design-category-science {
    background: linear-gradient(135deg, #6e7f59, #466951);
}

.design-session-body h3 {
    margin: 0 0 8px;
    font-size: 1.04rem;
}

.design-session-body p,
.design-session-meta span {
    margin: 0;
    color: var(--muted);
}

.design-session-meta {
    padding-top: 12px;
    border-top: 1px solid rgba(174, 135, 106, 0.16);
    font-size: 0.86rem;
}

.design-modal {
    position: fixed;
    inset: 0;
    background: rgba(45, 29, 20, 0.42);
    display: grid;
    place-items: center;
    padding: 24px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease;
    z-index: 120;
}

.design-modal.open {
    opacity: 1;
    pointer-events: auto;
}

body.modal-open {
    overflow: hidden;
}

.design-modal-dialog {
    position: relative;
    width: min(980px, 100%);
    max-height: min(90vh, 920px);
    overflow: auto;
    padding: 28px;
    border-radius: 30px;
    background: #fffaf4;
    box-shadow: 0 36px 80px rgba(45, 29, 20, 0.24);
}

.design-modal-close {
    position: absolute;
    top: 18px;
    right: 18px;
    width: 42px;
    height: 42px;
    border-radius: 999px;
    border: 1px solid rgba(174, 135, 106, 0.2);
    background: #fff;
    font-size: 1.5rem;
    line-height: 1;
}

.design-modal-head,
.design-modal-badges,
.design-modal-grid {
    display: grid;
    gap: 18px;
}

.design-modal-head {
    grid-template-columns: 1fr auto;
    align-items: start;
    margin-bottom: 18px;
}

.design-modal-head h2 {
    margin: 4px 0 8px;
}

.design-modal-head p {
    margin: 0;
    color: var(--muted);
}

.design-modal-badges {
    grid-auto-flow: row;
    align-content: start;
}

.design-modal-grid {
    grid-template-columns: 0.95fr 1.05fr;
}

.design-meta-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin: 12px 0 16px;
}

.design-meta-item {
    padding: 12px 14px;
    border-radius: 18px;
    background: rgba(197, 111, 66, 0.08);
    display: grid;
    gap: 4px;
}

.design-meta-item span {
    font-size: 0.78rem;
    color: var(--muted);
}

.design-resource-panel {
    grid-column: 1 / -1;
}

.design-resource-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.design-session-hero {
    background: linear-gradient(135deg, rgba(255, 249, 242, 0.98) 0%, rgba(244, 232, 220, 0.96) 100%);
    border-color: rgba(174, 135, 106, 0.24);
}

.design-session-hero-art {
    min-height: 280px;
    border-radius: 28px;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 10px;
    color: rgba(255, 248, 241, 0.96);
    text-align: center;
    padding: 28px;
}

.design-session-hero-art strong {
    font-size: clamp(2.6rem, 5vw, 4.6rem);
    line-height: 1;
}

.design-session-hero-art span {
    font-size: 1.6rem;
    font-weight: 800;
}

.design-session-hero-image {
    width: 100%;
    max-width: 360px;
    max-height: 320px;
    object-fit: contain;
    display: block;
    filter: drop-shadow(0 18px 30px rgba(45, 29, 20, 0.18));
}

.design-session-hero-art small {
    font-size: 0.95rem;
    opacity: 0.92;
}

.design-session-summary-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 18px 0;
}

.design-session-detail-grid,
.design-flow-grid,
.design-related-grid {
    display: grid;
    gap: 18px;
}

.design-session-detail-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-bottom: 8px;
}

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

.design-related-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.design-related-card {
    display: grid;
    gap: 10px;
    padding: 18px;
    border-radius: 22px;
    background: rgba(255, 251, 246, 0.94);
    border: 1px solid rgba(174, 135, 106, 0.16);
    box-shadow: 0 14px 30px rgba(118, 78, 54, 0.08);
    color: inherit;
    text-decoration: none;
}

.design-related-card strong,
.design-related-card small {
    margin: 0;
}

.design-related-card small {
    color: var(--muted);
}

.design-related-card.is-current {
    border-color: rgba(197, 111, 66, 0.4);
    box-shadow: 0 18px 36px rgba(118, 78, 54, 0.12);
}

.design-viewer-text-panel {
    min-height: 420px;
    display: grid;
    align-content: start;
    gap: 16px;
}

.design-viewer-text-panel h3,
.design-viewer-text-panel p {
    margin: 0;
}

.design-flow-list {
    display: grid;
    gap: 14px;
}

.design-flow-list strong {
    display: block;
    margin-bottom: 6px;
}

.design-flow-list p {
    margin: 0;
    color: var(--muted);
}

.design-evaluation-table th {
    background: rgba(255, 242, 227, 0.92);
}

@media (max-width: 960px) {
    .hero-grid,
    .split-panel,
    .chapter-layout,
    .ppt-viewer-shell,
    .science-chart-grid,
    .science-hero-banner,
    .science-curriculum-focus,
    .science-issue-hero,
    .science-infographic-grid,
    .science-curriculum-entry {
        grid-template-columns: 1fr;
    }

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

    .science-session-summary-grid {
        grid-template-columns: 1fr;
    }

    .science-session-board {
        grid-template-columns: 1fr;
    }

    .topbar-inner,
    .footer-panel,
    .section-head {
        align-items: start;
        flex-direction: column;
    }

    .hero {
        padding-top: 34px;
    }

    .ppt-sidebar {
        position: static;
        max-height: none;
    }

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

    .science-sidebar {
        position: fixed;
        left: 0;
        top: 0;
        transform: translateX(-100%);
        transition: transform 180ms ease;
        width: min(300px, calc(100% - 48px));
    }

    .science-sidebar.open {
        transform: translateX(0);
    }

    .science-mobile-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .science-layout-main {
        height: auto;
        min-height: 100vh;
        padding: 72px 16px 24px;
    }

    .science-page-head-split {
        grid-template-columns: 1fr;
    }

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

    .design-sidebar {
        position: fixed;
        left: 0;
        top: 0;
        transform: translateX(-100%);
        transition: transform 180ms ease;
        width: min(300px, calc(100% - 48px));
    }

    .design-sidebar.open {
        transform: translateX(0);
    }

    .design-session-grid,
    .design-module-grid,
    .design-session-detail-grid,
    .design-flow-grid,
    .design-related-grid,
    .design-modal-grid,
    .design-modal-head {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .container {
        width: min(calc(100% - 20px), var(--container));
    }

    .glass-card,
    .panel,
    .chapter-card,
    .program-card,
    .feature-card,
    .metric-card,
    .media-card {
        padding: 20px;
        border-radius: 22px;
    }

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

    .science-week-inline-grid {
        grid-template-columns: 1fr;
    }

    .timeline-list li {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .design-modal-dialog,
    .design-session-card {
        border-radius: 22px;
    }

    .design-session-grid {
        grid-template-columns: 1fr;
    }

    .design-meta-list {
        grid-template-columns: 1fr;
    }
}

.microbit-hero-visual,
.microbit-showcase-card,
.microbit-intro-panel,
.microbit-resource-card,
.microbit-phase-card {
    border-radius: 28px;
}

.microbit-hero-visual,
.microbit-showcase-card {
    padding: 18px;
}

.microbit-hero-visual img,
.microbit-showcase-card img {
    width: 100%;
    border-radius: 20px;
    background: #fff;
    border: 1px solid rgba(156, 189, 216, 0.24);
    object-fit: contain;
}

.microbit-showcase-card img {
    aspect-ratio: 4 / 3;
    padding: 10px;
}

.microbit-intro-panel {
    margin-top: 24px;
}

.microbit-intro-panel p {
    margin: 0;
    line-height: 1.8;
}

.microbit-intro-panel .muted {
    margin-top: 14px;
}

.microbit-resource-grid,
.microbit-phase-grid {
    display: grid;
    gap: 18px;
}

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

.microbit-resource-card {
    display: grid;
    grid-template-columns: minmax(220px, 0.85fr) minmax(0, 1fr);
    gap: 18px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(156, 189, 216, 0.22);
    box-shadow: var(--shadow);
}

.microbit-resource-image {
    border-radius: 22px;
    overflow: hidden;
    background: linear-gradient(180deg, #f8fbff 0%, #eef5ff 100%);
    border: 1px solid rgba(156, 189, 216, 0.18);
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px;
}

.microbit-resource-image img {
    max-height: 260px;
    object-fit: contain;
}

.microbit-resource-copy {
    display: grid;
    align-content: center;
    gap: 10px;
}

.microbit-resource-copy h3,
.microbit-phase-card h3 {
    margin: 0;
}

.microbit-resource-copy p,
.microbit-phase-card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.75;
}

.microbit-phase-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.microbit-phase-card {
    padding: 22px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(156, 189, 216, 0.22);
    box-shadow: var(--shadow);
    display: grid;
    gap: 12px;
}

.microbit-session-card {
    display: grid;
    gap: 16px;
}

.smartfarm-infographic-strip {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}

.smartfarm-fact-card {
    padding: 18px 20px;
    border-radius: 22px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.96) 0%, rgba(232, 244, 255, 0.96) 100%);
    border: 1px solid rgba(156, 189, 216, 0.24);
    box-shadow: var(--shadow);
    display: grid;
    gap: 8px;
}

.smartfarm-fact-card span {
    font-size: 0.82rem;
    font-weight: 800;
    color: var(--muted);
}

.smartfarm-fact-card strong {
    font-size: 1.02rem;
    line-height: 1.5;
}

.smartfarm-fact-card.tone-coding {
    background: linear-gradient(135deg, rgba(238, 246, 255, 0.98) 0%, rgba(217, 236, 255, 0.98) 100%);
}

.smartfarm-fact-card.tone-sensor {
    background: linear-gradient(135deg, rgba(240, 251, 247, 0.98) 0%, rgba(217, 244, 232, 0.98) 100%);
}

.smartfarm-fact-card.tone-automation {
    background: linear-gradient(135deg, rgba(255, 248, 234, 0.98) 0%, rgba(255, 236, 200, 0.98) 100%);
}

.smartfarm-fact-card.tone-project {
    background: linear-gradient(135deg, rgba(248, 242, 255, 0.98) 0%, rgba(232, 221, 255, 0.98) 100%);
}

.smartfarm-process-panel {
    margin: 24px 0;
}

.smartfarm-curriculum-chart-grid {
    margin-top: 24px;
    margin-bottom: 0;
}

.smartfarm-graph-card {
    display: grid;
    gap: 18px;
    min-height: 320px;
}

.smartfarm-bar-list {
    display: grid;
    gap: 14px;
}

.smartfarm-bar-item {
    display: grid;
    gap: 8px;
}

.smartfarm-bar-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font-size: 0.94rem;
}

.smartfarm-bar-top span {
    color: var(--text);
    font-weight: 700;
}

.smartfarm-bar-top strong {
    color: var(--primary-strong);
}

.smartfarm-bar-track {
    width: 100%;
    height: 12px;
    border-radius: 999px;
    background: rgba(156, 189, 216, 0.22);
    overflow: hidden;
}

.smartfarm-bar-fill {
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, #0ea5e9 0%, #38bdf8 100%);
}

.smartfarm-donut-shell {
    display: grid;
    gap: 20px;
    justify-items: center;
}

.smartfarm-donut-ring {
    width: 220px;
    height: 220px;
    border-radius: 50%;
    display: grid;
    place-items: center;
}

.smartfarm-donut-center {
    width: 116px;
    height: 116px;
    border-radius: 50%;
    background: #ffffff;
    display: grid;
    place-items: center;
    font-size: 2rem;
    font-weight: 800;
    color: var(--text);
    box-shadow: inset 0 0 0 1px rgba(156, 189, 216, 0.22);
}

.smartfarm-donut-legend {
    width: 100%;
    display: grid;
    gap: 10px;
}

.smartfarm-donut-legend-item {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 16px;
    background: rgba(248, 251, 255, 0.92);
    border: 1px solid rgba(156, 189, 216, 0.16);
}

.smartfarm-donut-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.smartfarm-process-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.smartfarm-step-card {
    padding: 20px;
    border-radius: 24px;
    background: linear-gradient(180deg, rgba(247, 251, 255, 0.98) 0%, rgba(236, 246, 255, 0.98) 100%);
    border: 1px solid rgba(156, 189, 216, 0.22);
    position: relative;
    overflow: hidden;
}

.smartfarm-step-card::after {
    content: "";
    position: absolute;
    inset: auto -20px -38px auto;
    width: 96px;
    height: 96px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(15, 139, 215, 0.14) 0%, transparent 70%);
}

.smartfarm-step-card.tone-coding {
    background: linear-gradient(180deg, rgba(244, 249, 255, 0.98) 0%, rgba(224, 239, 255, 0.98) 100%);
}

.smartfarm-step-card.tone-sensor {
    background: linear-gradient(180deg, rgba(244, 255, 249, 0.98) 0%, rgba(224, 248, 235, 0.98) 100%);
}

.smartfarm-step-card.tone-automation {
    background: linear-gradient(180deg, rgba(255, 250, 239, 0.98) 0%, rgba(255, 239, 210, 0.98) 100%);
}

.smartfarm-step-card.tone-project {
    background: linear-gradient(180deg, rgba(250, 245, 255, 0.98) 0%, rgba(237, 227, 255, 0.98) 100%);
}

.smartfarm-step-icon {
    width: fit-content;
    min-width: 70px;
    padding: 8px 12px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: var(--text);
    background: rgba(255, 255, 255, 0.74);
    border: 1px solid rgba(156, 189, 216, 0.24);
    position: relative;
    z-index: 1;
}

.smartfarm-step-card.tone-coding .smartfarm-step-icon {
    background: rgba(205, 230, 255, 0.88);
    color: #0b5da8;
}

.smartfarm-step-card.tone-sensor .smartfarm-step-icon {
    background: rgba(204, 239, 221, 0.92);
    color: #13795b;
}

.smartfarm-step-card.tone-automation .smartfarm-step-icon {
    background: rgba(255, 228, 170, 0.92);
    color: #a15b00;
}

.smartfarm-step-card.tone-project .smartfarm-step-icon {
    background: rgba(226, 212, 255, 0.92);
    color: #6d28d9;
}

.smartfarm-step-card h3 {
    margin: 14px 0 10px;
    font-size: 1.08rem;
    position: relative;
    z-index: 1;
}

.smartfarm-step-card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.72;
    font-size: 0.94rem;
    position: relative;
    z-index: 1;
}

@media (max-width: 980px) {
    .microbit-resource-grid,
    .microbit-phase-grid,
    .smartfarm-infographic-strip,
    .smartfarm-process-grid {
        grid-template-columns: 1fr;
    }

    .microbit-resource-card {
        grid-template-columns: 1fr;
    }
}