@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

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

:root {
    --bg-top: #141a32;
    --bg-mid: #090d1a;
    --bg-bottom: #03050b;

    --text: #f5f7ff;
    --muted: rgba(226, 232, 240, 0.74);
    --muted-2: rgba(226, 232, 240, 0.56);

    --line: rgba(255, 255, 255, 0.12);
    --line-strong: rgba(255, 255, 255, 0.2);
    --surface: rgba(255, 255, 255, 0.065);
    --surface-2: rgba(255, 255, 255, 0.04);

    --blue: #60a5fa;
    --cyan: #22d3ee;
    --violet: #8b5cf6;
    --pink: #f472b6;
    --green: #34d399;

    --shadow-lg: 0 28px 90px rgba(0, 0, 0, 0.34);
    --shadow-md: 0 18px 54px rgba(0, 0, 0, 0.26);

    --radius-xxl: 32px;
    --radius-xl: 26px;
    --radius-lg: 22px;
    --radius-md: 18px;
    --radius-sm: 14px;

    --container: 1280px;
}

html {
    min-height: 100%;
    scroll-behavior: smooth;
    background: radial-gradient(ellipse at top, var(--bg-top) 0%, var(--bg-mid) 48%, var(--bg-bottom) 100%) fixed;
}

body {
    min-height: 100vh;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    background: transparent;
    position: relative;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

button {
    font: inherit;
}

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

:focus-visible {
    outline: 3px solid rgba(96, 165, 250, 0.32);
    outline-offset: 2px;
}

/* 背景效果 */
.scene-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background: linear-gradient(180deg, rgba(5, 8, 20, 0.16) 0%, rgba(5, 8, 20, 0.8) 100%);
    opacity: 0.16;
    transform: scale(1.04);
}

.stars {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
            radial-gradient(1.5px 1.5px at 25px 35px, rgba(255, 255, 255, 1), rgba(0, 0, 0, 0)),
            radial-gradient(2px 2px at 150px 200px, rgba(210, 190, 255, 0.95), rgba(0, 0, 0, 0)),
            radial-gradient(1px 1px at 50px 160px, rgba(255, 255, 255, 0.95), rgba(0, 0, 0, 0)),
            radial-gradient(1.5px 1.5px at 100px 120px, rgba(255, 255, 255, 1), rgba(0, 0, 0, 0)),
            radial-gradient(1px 1px at 190px 70px, rgba(255, 255, 255, 1), rgba(0, 0, 0, 0)),
            radial-gradient(1.5px 1.5px at 10px 230px, rgba(255, 170, 220, 0.86), rgba(0, 0, 0, 0)),
            radial-gradient(2px 2px at 210px 40px, rgba(255, 220, 140, 0.86), rgba(0, 0, 0, 0)),
            radial-gradient(1.5px 1.5px at 230px 145px, rgba(130, 220, 255, 0.86), rgba(0, 0, 0, 0));
    background-repeat: repeat;
    background-size: 280px 280px;
    opacity: 0.52;
    animation: moveStars 80s linear infinite;
}

.grid-overlay {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    opacity: 0.05;
    background-image:
            linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 84px 84px;
    mask-image: radial-gradient(circle at center, black 14%, transparent 82%);
    -webkit-mask-image: radial-gradient(circle at center, black 14%, transparent 82%);
}

.glow-effect {
    position: fixed;
    width: 620px;
    height: 620px;
    border-radius: 50%;
    filter: blur(110px);
    opacity: 0.14;
    pointer-events: none;
    z-index: 1;
}

.glow-1 {
    top: -220px;
    left: -180px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.42) 0%, transparent 70%);
    animation: drift 20s ease-in-out infinite;
}

.glow-2 {
    right: -180px;
    bottom: -220px;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.38) 0%, transparent 70%);
    animation: drift 26s ease-in-out infinite reverse;
}

/* 页面布局 */
.page-shell {
    position: relative;
    z-index: 10;
    width: min(var(--container), 100%);
    margin: 0 auto;
    padding: 18px 24px 88px;
}

.site-header {
    position: sticky;
    top: 18px;
    z-index: 80;
}

.header-stack {
    display: grid;
    gap: 12px;
}

.nav-panel,
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 12px 14px;
    border-radius: 24px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
    border: 1px solid var(--line);
    backdrop-filter: blur(22px) saturate(180%);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
    box-shadow: var(--shadow-lg);
}

.brand-area {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.brand-mark {
    width: 46px;
    height: 46px;
    display: block;
    object-fit: contain;
    flex-shrink: 0;
}

.brand-copy {
    min-width: 0;
}

.brand-name {
    font-size: 0.98rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 0.02em;
    line-height: 1.15;
}

.brand-domain {
    margin-top: 3px;
    font-size: 0.76rem;
    color: rgba(226, 232, 240, 0.58);
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.nav-center {
    display: flex;
    align-items: center;
    gap: 24px;
    min-width: 0;
}

.nav-link {
    color: rgba(226, 232, 240, 0.74);
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    transition: color 0.28s ease;
    white-space: nowrap;
}

.nav-link:hover {
    color: #ffffff;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.ghost-btn,
.primary-btn,
.secondary-btn,
.lang-btn,
.menu-toggle {
    border: none;
    cursor: pointer;
    transition: all 0.28s ease;
}

.ghost-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 42px;
    padding: 0 16px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #ffffff;
    font-size: 0.9rem;
    font-weight: 600;
}

.ghost-btn:hover {
    background: rgba(255, 255, 255, 0.09);
}

.lang-container {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.lang-btn {
    min-width: 62px;
    height: 38px;
    border-radius: 12px;
    background: transparent;
    color: rgba(255, 255, 255, 0.74);
    font-size: 0.88rem;
    font-weight: 700;
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #ffffff;
}

.lang-btn.is-active {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.22), rgba(56, 189, 248, 0.22));
    color: #ffffff;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.055);
    border: 1px solid rgba(255, 255, 255, 0.1);
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.menu-toggle:hover {
    background: rgba(255, 255, 255, 0.09);
}

.menu-bars {
    position: relative;
    width: 18px;
    height: 14px;
}

.menu-bars span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    border-radius: 999px;
    background: #ffffff;
    transition: all 0.28s ease;
}

.menu-bars span:nth-child(1) {
    top: 0;
}

.menu-bars span:nth-child(2) {
    top: 6px;
}

.menu-bars span:nth-child(3) {
    top: 12px;
}

.menu-toggle.is-active .menu-bars span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

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

.menu-toggle.is-active .menu-bars span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

.mobile-menu-panel {
    display: none;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
    border: 1px solid var(--line);
    backdrop-filter: blur(22px) saturate(180%);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
    box-shadow: var(--shadow-md);
}

.hero-section {
    margin-top: 22px;
}

.doc-kicker,
.hero-kicker {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    padding: 10px 16px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #e7edff;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.hero-title {
    margin-top: 18px;
    font-size: clamp(3rem, 5vw, 5rem);
    line-height: 1.02;
    letter-spacing: -0.06em;
    font-weight: 800;
    background: linear-gradient(135deg, #ffffff 0%, #dfe9ff 46%, #b5d6ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    margin-top: 18px;
    color: var(--muted);
    font-size: 1.02rem;
    line-height: 1.9;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 28px;
}

.primary-btn,
.secondary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 18px;
    border-radius: 14px;
    font-size: 0.94rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.primary-btn {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.96), rgba(56, 189, 248, 0.96));
    color: #ffffff;
    box-shadow: 0 16px 36px rgba(56, 189, 248, 0.18), 0 12px 30px rgba(139, 92, 246, 0.16);
}

.primary-btn:hover {
    transform: translateY(-2px);
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.055);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #ffffff;
}

.secondary-btn:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.08);
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    padding: 9px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.055);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(241, 245, 249, 0.86);
    font-size: 0.88rem;
    font-weight: 500;
}

/* Section通用样式 */
.section {
    margin-top: 78px;
}

.section-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 22px;
}

.section-copy {
    max-width: 700px;
}

.section-kicker {
    margin-top: -50px;
    color: rgba(186, 230, 253, 0.86);
    font-size: 0.8rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 700;
}

.section-title {
    margin-top: 10px;
    font-size: clamp(2rem, 3.2vw, 3.1rem);
    line-height: 1.06;
    letter-spacing: -0.05em;
    font-weight: 800;
    color: #ffffff;
}

.section-desc {
    max-width: 56ch;
    color: var(--muted);
    font-size: 1rem;
    line-height: 1.85;
}

.hero-panel,
.masthead,
.app-card,
.metric-card,
.portal-card,
.capability-card,
.architecture-panel,
.governance-panel,
.doc-intro,
.viewer-container,
.info-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
    border: 1px solid var(--line);
    backdrop-filter: blur(22px) saturate(180%);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
    box-shadow: var(--shadow-md);
}

.app-card:hover,
.portal-card:hover {
    transform: translateY(-6px);
    border-color: var(--line-strong);
    box-shadow: 0 24px 68px rgba(0, 0, 0, 0.34);
}

.footer-panel {
    margin-top: 50px;
    padding: 30px;
    border-radius: 28px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
    border: 1px solid var(--line);
    backdrop-filter: blur(22px) saturate(180%);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
    box-shadow: var(--shadow-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr 1fr;
    gap: 26px;
}

.footer-brand-mark {
    width: 50px;
    height: 50px;
    display: block;
    object-fit: contain;
}

.footer-brand-desc {
    margin-top: 16px;
    color: rgba(226, 232, 240, 0.68);
    font-size: 0.94rem;
    line-height: 1.82;
    max-width: 32ch;
}

.footer-title {
    color: #ffffff;
    font-size: 0.98rem;
    font-weight: 700;
    margin-bottom: 14px;
}

.footer-col a,
.footer-col p {
    display: block;
    color: rgba(226, 232, 240, 0.64);
    font-size: 0.92rem;
    line-height: 1.8;
    margin: 8px 0;
    transition: color 0.28s ease;
}

.footer-col a:hover {
    color: #ffffff;
}

.footer-bottom {
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.09);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    color: rgba(148, 163, 184, 0.72);
    font-size: 0.84rem;
    letter-spacing: 0.04em;
}

@keyframes moveStars {
    from {
        background-position: 0 0;
    }
    to {
        background-position: 500px 1000px;
    }
}

@keyframes drift {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(36px, 28px) scale(1.05);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 960px) {
    .nav-center,
    .ghost-btn {
        display: none;
    }

    .menu-toggle {
        display: inline-flex;
    }

    .mobile-menu-panel {
        display: block;
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        transform: translateY(-8px);
        pointer-events: none;
        border-radius: 22px;
        transition: max-height 0.36s ease, opacity 0.28s ease, transform 0.28s ease;
    }

    .mobile-menu-panel.is-open {
        max-height: 680px;
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    .mobile-menu-inner {
        padding: 18px;
        display: grid;
        gap: 18px;
    }

    .mobile-menu-group {
        display: grid;
        gap: 10px;
    }

    .mobile-menu-title {
        color: rgba(186, 230, 253, 0.82);
        font-size: 0.76rem;
        font-weight: 700;
        letter-spacing: 0.16em;
        text-transform: uppercase;
        margin-bottom: 2px;
    }

    .mobile-menu-link {
        min-height: 44px;
        padding: 0 14px;
        border-radius: 14px;
        display: flex;
        align-items: center;
        background: rgba(255, 255, 255, 0.045);
        border: 1px solid rgba(255, 255, 255, 0.08);
        color: rgba(226, 232, 240, 0.86);
        font-size: 0.92rem;
        font-weight: 600;
    }

    .mobile-menu-link:hover {
        background: rgba(255, 255, 255, 0.08);
        color: #ffffff;
    }

    .mobile-menu-cta {
        width: 100%;
    }
}

@media (max-width: 640px) {
    .page-shell {
        padding: 14px 14px 82px;
    }

    .site-header {
        top: 12px;
    }

    .header-stack {
        gap: 10px;
    }

    .nav-panel,
    .topbar {
        padding: 10px;
        border-radius: 20px;
    }

    .brand-mark {
        width: 40px;
        height: 40px;
    }

    .brand-name {
        font-size: 0.9rem;
    }

    .brand-domain {
        font-size: 0.7rem;
    }

    .lang-container {
        gap: 6px;
        padding: 5px;
        border-radius: 14px;
    }

    .lang-btn {
        min-width: 52px;
        height: 36px;
        border-radius: 10px;
        font-size: 0.82rem;
    }

    .menu-toggle {
        width: 40px;
        height: 40px;
        border-radius: 12px;
    }

    .hero-section {
        margin-top: 14px;
    }

    .hero-kicker {
        font-size: 0.72rem;
        padding: 8px 13px;
    }

    .hero-title {
        font-size: 2.45rem;
        margin-top: 16px;
    }

    .hero-desc {
        font-size: 0.92rem;
        line-height: 1.78;
    }

    .hero-actions {
        margin-top: 20px;
    }

    .primary-btn,
    .secondary-btn {
        width: 100%;
        min-height: 44px;
        font-size: 0.9rem;
    }

    .hero-tag {
        font-size: 0.8rem;
        padding: 8px 12px;
    }

    .section {
        margin-top: 60px;
    }

    .section-head {
        margin-bottom: 16px;
    }

    .section-kicker {
        font-size: 0.74rem;
    }

    .section-title {
        font-size: 1.9rem;
    }

    .section-desc {
        font-size: 0.92rem;
        line-height: 1.78;
    }

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

    .footer-panel {
        margin-top: 60px;
        padding: 22px;
    }

    .footer-brand-desc,
    .footer-col a,
    .footer-col p {
        font-size: 0.88rem;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        font-size: 0.78rem;
    }

    .mobile-menu-inner {
        padding: 14px;
    }

    .mobile-menu-link {
        min-height: 42px;
        font-size: 0.88rem;
    }
}

.masthead {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(340px, 0.88fr);
    gap: 22px;
    padding: 34px;
    border-radius: var(--radius-xxl);
    overflow: hidden;
    animation: fadeInUp 0.55s ease both;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
    border: 1px solid var(--line);
    backdrop-filter: blur(22px) saturate(180%);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
    box-shadow: var(--shadow-md);
}

.masthead::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
            radial-gradient(circle at 14% 12%, rgba(139, 92, 246, 0.12), transparent 30%),
            radial-gradient(circle at 86% 16%, rgba(56, 189, 248, 0.12), transparent 28%),
            linear-gradient(120deg, rgba(255, 255, 255, 0.06), transparent 22%, transparent 78%, rgba(255, 255, 255, 0.03));
}

.masthead-copy,
.abstract-panel {
    position: relative;
    z-index: 1;
}

.masthead-copy {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 360px;
}

.hero-title {
    max-width: 13ch;
    font-size: clamp(3rem, 5vw, 4.8rem);
}

.hero-desc {
    max-width: 70ch;
    line-height: 1.92;
}

.abstract-panel {
    min-height: 360px;
    padding: 24px;
    border-radius: 28px;
    background:
            linear-gradient(160deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.025)),
            radial-gradient(circle at 18% 18%, rgba(139, 92, 246, 0.14), transparent 34%),
            radial-gradient(circle at 82% 18%, rgba(56, 189, 248, 0.14), transparent 34%);
    border: 1px solid rgba(255, 255, 255, 0.12);
    overflow: hidden;
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
}

.abstract-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(130deg, rgba(255, 255, 255, 0.06), transparent 24%, transparent 76%, rgba(255, 255, 255, 0.03));
}

.abstract-label,
.abstract-title,
.abstract-desc,
.abstract-meta {
    position: relative;
    z-index: 1;
}

.abstract-label {
    color: rgba(226, 232, 240, 0.62);
    font-size: 0.76rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 700;
}

.abstract-title {
    margin-top: 16px;
    color: #ffffff;
    font-size: 1.5rem;
    line-height: 1.2;
    letter-spacing: -0.04em;
    font-weight: 760;
    max-width: 16ch;
}

.abstract-desc {
    margin-top: 12px;
    color: rgba(226, 232, 240, 0.76);
    font-size: 0.95rem;
    line-height: 1.84;
    max-width: 54ch;
}

.abstract-meta {
    margin-top: 18px;
    display: grid;
    gap: 12px;
}

.abstract-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.abstract-row span {
    color: rgba(226, 232, 240, 0.62);
    font-size: 0.84rem;
    line-height: 1.6;
}

.abstract-row strong {
    color: #ffffff;
    font-size: 0.88rem;
    font-weight: 700;
    line-height: 1.6;
    text-align: right;
    white-space: nowrap;
}

/* Album Grid */
.section-copy {
    max-width: 760px;
}

.section-desc {
    max-width: 64ch;
}

.album-grid {
    max-width: 1240px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.media-card {
    position: relative;
    overflow: hidden;
    border-radius: 28px;
    padding: 16px 16px 18px;
    transition: transform 0.34s ease, border-color 0.32s ease, box-shadow 0.32s ease;
    animation: fadeInUp 0.52s ease both;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
    border: 1px solid var(--line);
    backdrop-filter: blur(22px) saturate(180%);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
    box-shadow: var(--shadow-md);
}

.media-card:nth-child(1) { animation-delay: 0.05s; }
.media-card:nth-child(2) { animation-delay: 0.1s; }
.media-card:nth-child(3) { animation-delay: 0.15s; }
.media-card:nth-child(4) { animation-delay: 0.2s; }
.media-card:nth-child(5) { animation-delay: 0.25s; }
.media-card:nth-child(6) { animation-delay: 0.3s; }
.media-card:nth-child(7) { animation-delay: 0.35s; }
.media-card:nth-child(8) { animation-delay: 0.4s; }
.media-card:nth-child(9) { animation-delay: 0.45s; }

.media-card::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
            radial-gradient(circle at 18% 16%, rgba(139, 92, 246, 0.16), transparent 30%),
            radial-gradient(circle at 82% 14%, rgba(56, 189, 248, 0.14), transparent 28%);
    opacity: 0.9;
}

.media-card:hover {
    transform: translateY(-6px);
    border-color: var(--line-strong);
    box-shadow: 0 24px 68px rgba(0, 0, 0, 0.34);
}

.media-top {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.media-code {
    color: rgba(226, 232, 240, 0.62);
    font-size: 0.76rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 700;
}

.media-type {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 11px;
    border-radius: 999px;
    font-size: 0.76rem;
    font-weight: 700;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: rgba(241, 245, 249, 0.9);
    white-space: nowrap;
}

.media-type.image {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.14), rgba(56, 189, 248, 0.14));
}

.media-type.video {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.14), rgba(139, 92, 246, 0.14));
}

.media-container {
    aspect-ratio: 3 / 2;
    background: linear-gradient(135deg, #0a0a1a 0%, #000000 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    border-radius: 22px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.media-container::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.34) 100%);
    opacity: 0;
    transition: opacity 0.3s;
}

.media-card:hover .media-container::after {
    opacity: 1;
}

.media-container img,
.media-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.4s ease;
}

.media-card:hover .media-container img,
.media-card:hover .media-container video {
    transform: scale(1.05);
}

.media-body {
    position: relative;
    z-index: 1;
    margin-top: 14px;
}

.media-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
}

.card-title {
    color: #ffffff;
    font-size: 1rem;
    font-weight: 760;
    letter-spacing: -0.03em;
    line-height: 1.35;
}

.media-card:hover .card-title {
    background: linear-gradient(135deg, #ffffff 0%, #dfe9ff 42%, #c6d9ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-date {
    color: rgba(226, 232, 240, 0.56);
    font-size: 0.74rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    white-space: nowrap;
    flex-shrink: 0;
}

.card-desc {
    margin-top: 10px;
    color: rgba(226, 232, 240, 0.72);
    font-size: 0.88rem;
    line-height: 1.72;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 响应式 - 文件2特有 */
@media (max-width: 1160px) {
    .masthead {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 960px) {
    .album-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .masthead {
        padding: 20px;
        border-radius: 24px;
        gap: 18px;
    }

    .hero-title {
        max-width: none;
    }

    .abstract-panel {
        min-height: auto;
        padding: 18px;
        border-radius: 22px;
    }

    .abstract-title {
        font-size: 1.28rem;
    }

    .album-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .media-card {
        padding: 14px 14px 16px;
        border-radius: 22px;
    }

    .media-container {
        border-radius: 18px;
    }

    .card-title {
        font-size: 0.96rem;
    }

    .card-desc {
        font-size: 0.86rem;
        line-height: 1.7;
    }
}