.demo-page,
.gr4-page {
    background:
        radial-gradient(circle at 88% 12%, rgba(var(--color-accent-light-rgb), 0.2), transparent 40%),
        radial-gradient(circle at 12% 0%, rgba(var(--color-accent-rgb), 0.16), transparent 44%),
        linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface-alt) 50%, var(--color-bg) 100%);
}

.demo-main,
.gr4-main {
    min-height: 100vh;
    padding-top: 7.4rem;
}

.demo-main {
    padding-bottom: 3.5rem;
}

.gr4-main {
    padding-bottom: 4rem;
}

.demo-layout,
.gr4-layout {
    margin: 0 auto;
    padding: 0 1.5rem;
}

.demo-layout {
    max-width: 1120px;
}

.gr4-layout {
    max-width: 1040px;
}

.demo-header,
.gr4-header {
    text-align: center;
    margin-bottom: 1.6rem;
}

.demo-kicker,
.gr4-kicker {
    display: inline-flex;
    padding: 0.34rem 0.78rem;
    border-radius: 999px;
    border: 1px solid rgba(var(--color-accent-rgb), 0.24);
    background: rgba(var(--color-accent-rgb), 0.08);
    font-size: 0.76rem;
    letter-spacing: 0.08em;
    color: var(--color-accent-strong);
    margin-bottom: 0.78rem;
    font-weight: 700;
}

.demo-header h1,
.gr4-header h1 {
    font-family: "Instrument Serif", "Times New Roman", serif;
    font-weight: 400;
    color: var(--color-accent-strong);
    line-height: 1.1;
}

.demo-header h1 {
    font-size: clamp(2.3rem, 6vw, 3.8rem);
    margin-bottom: 0.5rem;
}

.gr4-header h1 {
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    margin-bottom: 0.7rem;
}

.demo-header p,
.gr4-header p {
    color: var(--color-text-dim);
    font-size: 1.02rem;
}

.gr4-header p {
    max-width: 730px;
    margin: 0 auto;
}

.demo-frame-card,
.gr4-video-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-stroke);
    border-radius: 30px;
    padding: 1rem;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
}

.demo-frame-card iframe {
    width: 100%;
    max-width: 100%;
    height: min(74vh, 700px);
    border-radius: 20px;
    display: block;
    border: 1px solid rgba(var(--color-accent-rgb), 0.15);
}

.gr4-video-card {
    margin-top: 2.1rem;
}

.gr4-video-frame {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(var(--color-accent-rgb), 0.15);
}

.gr4-video-frame iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.gr4-bottom-link {
    margin-top: 2.3rem;
    padding-top: 1.8rem;
    border-top: 1px solid rgba(var(--color-accent-rgb), 0.15);
    text-align: center;
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    flex-wrap: wrap;
}

@media (max-width: 900px) {
    .demo-main,
    .gr4-main {
        padding-top: 6.8rem;
    }
}

@media (max-width: 620px) {
    .demo-layout,
    .gr4-layout {
        padding: 0 1rem;
    }

    .demo-main,
    .gr4-main {
        padding-top: 6.4rem;
    }

    .demo-frame-card,
    .gr4-video-card {
        border-radius: 22px;
        padding: 0.7rem;
    }

    .demo-frame-card iframe,
    .gr4-video-frame {
        border-radius: 15px;
    }
}

.gr-page {
    background:
        radial-gradient(circle at 88% 12%, rgba(var(--color-accent-light-rgb), 0.2), transparent 40%),
        radial-gradient(circle at 12% 0%, rgba(var(--color-accent-rgb), 0.16), transparent 44%),
        linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface-alt) 50%, var(--color-bg) 100%);
}

.gr-main {
    min-height: 100vh;
    padding-top: 7.4rem;
    padding-bottom: 4rem;
}

.gr-layout {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.gr-header {
    text-align: center;
    margin-bottom: 1.8rem;
}

.gr-kicker {
    display: inline-flex;
    padding: 0.34rem 0.78rem;
    border-radius: 999px;
    border: 1px solid rgba(var(--color-accent-rgb), 0.24);
    background: rgba(var(--color-accent-rgb), 0.08);
    font-size: 0.76rem;
    letter-spacing: 0.08em;
    color: var(--color-accent-strong);
    margin-bottom: 0.78rem;
    font-weight: 700;
}

.gr-header h1 {
    font-family: "Instrument Serif", "Times New Roman", serif;
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    font-weight: 400;
    color: var(--color-accent-strong);
    line-height: 1.1;
    margin-bottom: 0.7rem;
}

.gr-header p {
    color: var(--color-text-dim);
    font-size: 1.02rem;
    max-width: 760px;
    margin: 0 auto;
}

.gr-resource-actions {
    margin-top: 1.9rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    justify-content: center;
}

.gr-deck-card {
    margin-top: 2.1rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-stroke);
    border-radius: 30px;
    padding: 1rem;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
}

.gr-deck-frame {
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(var(--color-accent-rgb), 0.15);
}

.gr-deck-frame iframe {
    width: 100%;
    height: min(78vh, 900px);
    border: 0;
    display: block;
    background: #fff;
}

.gr-prototype-frame {
    width: min(100%, 430px);
    margin: 0 auto;
    border-radius: 34px;
    overflow: hidden;
    border: 1px solid rgba(var(--color-accent-rgb), 0.15);
    background: #fff;
    aspect-ratio: 390 / 844;
}

.gr-prototype-frame iframe {
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
    background: #fff;
}

.gr-resource-note {
    margin-top: 1rem;
    text-align: center;
    color: var(--color-text-dim);
    font-size: 0.92rem;
}

.gr-hub-page {
    --gr-stack-gap: 0.55rem;
    background:
        radial-gradient(circle at 88% 12%, rgba(var(--color-accent-light-rgb), 0.2), transparent 40%),
        radial-gradient(circle at 12% 0%, rgba(var(--color-accent-rgb), 0.16), transparent 44%),
        linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface-alt) 50%, var(--color-bg) 100%);
}

.gr-subnav-region {
    position: relative;
    z-index: 920;
    padding-top: calc(var(--primary-nav-bottom, 90px) + var(--gr-stack-gap));
    padding-inline: 1rem;
}

.gr-subnav-shell {
    max-width: 1120px;
    margin: 0 auto;
    position: sticky;
    top: calc(var(--primary-nav-bottom, 90px) + var(--gr-stack-gap));
}

.gr-subnav-inner {
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-stroke);
    background: var(--glass-bg-strong);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(24px) saturate(165%);
    -webkit-backdrop-filter: blur(24px) saturate(165%);
    padding: 0.7rem 0.8rem;
}

.gr-hub-main {
    min-height: 100vh;
    padding-top: calc(var(--primary-nav-bottom, 92px) + 1.8rem);
    padding-bottom: 4rem;
}

.gr-hub-layout {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.gr-hub-header {
    text-align: center;
    margin-bottom: 1.35rem;
}

.gr-hub-kicker {
    display: inline-flex;
    padding: 0.34rem 0.78rem;
    border-radius: 999px;
    border: 1px solid rgba(var(--color-accent-rgb), 0.24);
    background: rgba(var(--color-accent-rgb), 0.08);
    font-size: 0.76rem;
    letter-spacing: 0.08em;
    color: var(--color-accent-strong);
    margin-bottom: 0.78rem;
    font-weight: 700;
}

.gr-hub-header h1 {
    font-family: "Instrument Serif", "Times New Roman", serif;
    font-size: clamp(2.3rem, 6vw, 4rem);
    font-weight: 400;
    color: var(--color-accent-strong);
    line-height: 1.1;
    margin-bottom: 0.7rem;
}

.gr-hub-header p {
    color: var(--color-text-dim);
    font-size: 1.02rem;
    max-width: 780px;
    margin: 0 auto;
}

.gr-quick-jump {
    display: grid;
    grid-template-columns: repeat(10, minmax(0, 1fr));
    gap: 0.46rem;
    align-items: stretch;
}

.gr-jump-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    text-decoration: none;
    color: var(--color-accent-strong);
    border: 1px solid rgba(var(--color-accent-rgb), 0.2);
    background: rgba(255, 255, 255, 0.65);
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    min-height: 40px;
    padding: 0.45rem 0.64rem;
    transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.gr-jump-link:hover {
    border-color: rgba(var(--color-accent-rgb), 0.35);
    background: rgba(255, 255, 255, 0.9);
}

.gr-jump-link.is-active {
    background: linear-gradient(130deg, var(--accent-faint), rgba(var(--color-accent-light-rgb), 0.16));
    border-color: rgba(var(--color-accent-rgb), 0.36);
}

.gr-jump-link.is-muted {
    opacity: 0.58;
    filter: saturate(0.6);
}

.gr-timeline {
    display: grid;
    gap: 1.15rem;
}

.gr-milestone {
    scroll-margin-top: calc(var(--primary-nav-bottom, 90px) + var(--gr-subnav-height, 88px) + 1rem);
    border-radius: 30px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-stroke);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
    padding: 1.25rem;
}

.gr-milestone.is-coming-soon {
    background: rgba(255, 255, 255, 0.42);
    border-color: rgba(var(--color-accent-rgb), 0.08);
    filter: saturate(0.64);
}

.gr-milestone-head {
    padding: 0.55rem 0.3rem 1.1rem;
}

.gr-milestone-toggle {
    width: 100%;
    border: 0;
    background: transparent;
    color: inherit;
    padding: 0;
    text-align: left;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 0.75rem;
    align-items: start;
}

.gr-milestone-toggle:disabled {
    cursor: default;
}

.gr-milestone-toggle:disabled .gr-toggle-icon {
    opacity: 0;
}

.gr-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    border: 1px solid rgba(var(--color-accent-rgb), 0.24);
    padding: 0.26rem 0.66rem;
    font-size: 0.76rem;
    letter-spacing: 0.06em;
    font-weight: 700;
    color: var(--color-accent-strong);
    background: rgba(var(--color-accent-rgb), 0.09);
    order: 2;
    justify-self: end;
    margin-top: 0.2rem;
}

.gr-toggle-copy {
    display: grid;
    gap: 0.22rem;
    min-width: 0;
    order: 1;
}

.gr-toggle-title {
    font-family: "Instrument Serif", "Times New Roman", serif;
    font-size: clamp(1.8rem, 4vw, 2.7rem);
    font-weight: 400;
    line-height: 1.14;
    color: var(--color-text);
}

.gr-toggle-subtitle {
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: rgba(var(--color-accent-strong-rgb), 0.72);
    white-space: normal;
}

.gr-milestone-summary {
    color: var(--color-text-dim);
    margin-top: 0.68rem;
    max-width: 850px;
}

.gr-toggle-icon {
    width: 0.82rem;
    height: 0.82rem;
    margin-top: 0.8rem;
    border-right: 2px solid rgba(var(--color-accent-strong-rgb), 0.74);
    border-bottom: 2px solid rgba(var(--color-accent-strong-rgb), 0.74);
    transform: rotate(45deg);
    transition: transform var(--transition-fast);
    order: 3;
}

.gr-milestone-toggle[aria-expanded="true"] .gr-toggle-icon {
    transform: rotate(-135deg);
}

.gr-milestone-panel[hidden] {
    display: none !important;
}

.gr-milestone-body {
    display: grid;
    grid-template-columns: 1fr 1.35fr;
    gap: 1rem;
}

.gr-resources-panel,
.gr-media-panel {
    border-radius: 22px;
    border: 1px solid rgba(var(--color-accent-rgb), 0.14);
    background: rgba(255, 255, 255, 0.62);
    padding: 1rem;
}

.gr-resources-panel h3 {
    font-size: 0.9rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(var(--color-accent-strong-rgb), 0.72);
    margin-bottom: 0.75rem;
}

.gr-resources-list {
    list-style: none;
    display: grid;
    gap: 0.55rem;
}

.gr-resource-item {
    border-radius: 14px;
    border: 1px solid rgba(var(--color-accent-rgb), 0.18);
    background: rgba(255, 255, 255, 0.82);
    min-height: 64px;
}

.resource-link {
    text-decoration: none;
    color: inherit;
    min-height: 64px;
    border-radius: 14px;
    padding: 0.62rem 0.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.65rem;
}

.resource-link-with-action {
    width: 100%;
}

.resource-main-link {
    text-decoration: none;
    color: inherit;
    display: block;
    flex: 1;
    min-width: 0;
}

.resource-main {
    color: var(--color-text);
    font-weight: 700;
    flex: 1;
    min-width: 0;
}

.resource-meta,
.resource-status {
    font-size: 0.78rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.resource-meta {
    color: rgba(var(--color-accent-strong-rgb), 0.62);
}

.resource-status {
    color: rgba(var(--color-accent-rgb), 0.72);
    justify-self: end;
}

.gr-resource-item.is-missing {
    display: flex;
    align-items: center;
    padding: 0.62rem 0.75rem;
    opacity: 0.72;
    border-style: dashed;
}

.resource-actions {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    flex-shrink: 0;
}

.resource-icon-link {
    width: 33px;
    height: 33px;
    border-radius: 10px;
    border: 1px solid rgba(var(--color-accent-rgb), 0.2);
    background: rgba(255, 255, 255, 0.84);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: rgba(var(--color-accent-strong-rgb), 0.8);
    text-decoration: none;
    transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.resource-icon-link:hover {
    background: rgba(255, 255, 255, 0.96);
    border-color: rgba(var(--color-accent-rgb), 0.34);
    color: var(--color-accent-strong);
}

.resource-icon-link svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.gr-media-panel {
    display: grid;
    gap: 0.75rem;
    align-content: start;
}

.gr-awards-strip {
    margin-top: 0.85rem;
    padding-top: 0.9rem;
    border-top: 1px solid rgba(var(--color-accent-rgb), 0.16);
}

.gr-awards-strip .laurel-awards--center .laurel-award-badge {
    width: 220px;
}

.gr-media-card {
    margin: 0;
}

.gr-media-card iframe {
    width: 100%;
    aspect-ratio: 4 / 3;
    border: 0;
    border-radius: 15px;
    display: block;
    background: #fff;
    border: 1px solid rgba(var(--color-accent-rgb), 0.16);
}

.gr-media-card-image img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    border-radius: 15px;
    border: 1px solid rgba(var(--color-accent-rgb), 0.16);
    display: block;
}

.gr-media-card figcaption {
    color: var(--color-text-dim);
    font-size: 0.86rem;
    margin-top: 0.5rem;
}

.gr-media-card-video iframe {
    aspect-ratio: 16 / 9;
}

.gr-media-card-video video {
    width: 100%;
    border-radius: 15px;
    border: 1px solid rgba(var(--color-accent-rgb), 0.16);
    background: #000;
    aspect-ratio: 16 / 9;
    display: block;
}

.gr-media-card-figma iframe {
    aspect-ratio: 390 / 844;
    max-height: 580px;
    margin: 0 auto;
}

.gr-media-placeholder {
    border: 1px dashed rgba(var(--color-accent-rgb), 0.2);
    border-radius: 16px;
    min-height: 112px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    text-align: center;
}

.gr-media-placeholder p {
    color: var(--color-text-dim);
    font-size: 0.92rem;
}

@media (max-width: 1180px) {
    .gr-main {
        padding-top: 6.8rem;
    }

    .gr-deck-frame iframe {
        height: min(72vh, 760px);
    }

    .gr-hub-page {
        --gr-subnav-height: 0px;
    }

    .gr-subnav-region {
        display: none;
    }

    .gr-hub-main {
        padding-top: calc(var(--primary-nav-bottom, 86px) + 1.15rem);
    }

    .gr-milestone {
        scroll-margin-top: calc(var(--primary-nav-bottom, 90px) + var(--gr-subnav-height, 88px) + 0.85rem);
    }

    .gr-milestone-body {
        grid-template-columns: 1fr;
    }

    .gr-media-card-figma iframe {
        max-height: 520px;
    }

    .gr-timeline.is-accordion-mode .gr-milestone {
        padding: 0.95rem;
    }

    .gr-timeline.is-accordion-mode .gr-milestone-head {
        padding-bottom: 0.42rem;
    }

    .gr-timeline.is-accordion-mode .gr-milestone-summary {
        margin-bottom: 0.15rem;
    }
}

@media (max-width: 620px) {
    .gr-layout {
        padding: 0 1rem;
    }

    .gr-main {
        padding-top: 6.4rem;
    }

    .gr-deck-card {
        border-radius: 22px;
        padding: 0.7rem;
    }

    .gr-deck-frame {
        border-radius: 15px;
    }

    .gr-deck-frame iframe {
        height: min(66vh, 620px);
    }

    .gr-prototype-frame {
        border-radius: 24px;
    }

    .gr-hub-layout {
        padding: 0 1rem;
    }

    .gr-hub-main {
        padding-top: calc(var(--primary-nav-bottom, 82px) + 0.9rem);
    }

    .gr-milestone {
        border-radius: 22px;
        padding: 0.85rem;
    }

    .gr-resources-panel,
    .gr-media-panel {
        border-radius: 16px;
        padding: 0.8rem;
    }

    .gr-awards-strip .laurel-awards--center {
        gap: 0.7rem;
    }

    .gr-awards-strip .laurel-awards--center .laurel-award-badge {
        width: 158px;
    }

    .gr-resource-item {
        min-height: 58px;
    }

    .resource-link,
    .gr-resource-item.is-missing {
        min-height: 58px;
        padding: 0.56rem 0.65rem;
    }

    .gr-milestone-head {
        padding: 0.4rem 0.1rem 0.9rem;
    }

    .gr-hub-header p {
        font-size: 0.96rem;
    }

    .gr-toggle-title {
        font-size: clamp(1.45rem, 8vw, 2rem);
        line-height: 1.1;
    }

    .gr-toggle-subtitle {
        font-size: 0.82rem;
        letter-spacing: 0.025em;
    }

    .gr-toggle-icon {
        margin-top: 0.6rem;
    }
}