:root {
    --bg-page: linear-gradient(90deg, #fce4ec 0%, #e3f2fd 100%);
    --bg-surface: rgba(255, 255, 255, 0.88);
    --bg-surface-strong: #ffffff;
    --bg-muted: #f1f5f9;
    --bg-accent-soft: linear-gradient(135deg, rgba(244, 143, 177, 0.14), rgba(144, 202, 249, 0.12));
    --text-primary: #102033;
    --text-secondary: #4d6279;
    --text-tertiary: #7f90a3;
    --border-subtle: rgba(148, 163, 184, 0.24);
    --border-strong: rgba(144, 202, 249, 0.32);
    --shadow-card: 0 22px 48px rgba(15, 23, 42, 0.08);
    --shadow-soft: 0 12px 28px rgba(15, 23, 42, 0.05);
    --shadow-focus: 0 0 0 4px rgba(244, 143, 177, 0.16);
    --brand: #f48fb1;
    --brand-strong: #f06292;
    --brand-warm: #f8bbd0;
    --brand-cool: #90caf9;
    --danger: #dc2626;
    --success: #047857;
    --warning: #b45309;
    --radius-xs: 8px;
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 24px;
    --content-width: 1180px;
    --transition-fast: 160ms ease;
    --transition-medium: 260ms cubic-bezier(0.2, 0.8, 0.2, 1);
    --transition-slow: 420ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text-primary);
    background: var(--bg-page);
    line-height: 1.65;
    text-rendering: optimizeLegibility;
}

body::before,
body::after {
    content: "";
    position: fixed;
    inset: auto;
    pointer-events: none;
    z-index: -1;
    /* 移除 filter: blur()，用更大的渐变 + 更低透明度模拟柔和效果 */
}

body::before {
    top: -200px;
    right: -180px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(244, 143, 177, 0.10), transparent 65%);
}

body::after {
    bottom: -220px;
    left: -200px;
    width: 650px;
    height: 650px;
    background: radial-gradient(circle, rgba(144, 202, 249, 0.08), transparent 60%);
}

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

button,
input,
textarea,
select {
    font: inherit;
}

button {
    border: 0;
    background: none;
    cursor: pointer;
}

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

.site-shell {
    width: min(var(--content-width), calc(100vw - 32px));
    margin: 0 auto;
}

.page-frame {
    position: relative;
    padding: 32px 0 56px;
}

.section-card,
.glass-panel {
    position: relative;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-card);
}

.section-card {
    border-radius: var(--radius-lg);
    padding: 28px;
}

.glass-panel {
    border-radius: var(--radius-md);
}

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

.section-title {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.section-subtitle,
.muted-text {
    color: var(--text-secondary);
}

.muted-text {
    margin: 0;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.6);
    color: var(--brand);
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: var(--shadow-soft);
}

.hero-title {
    margin: 0 0 16px;
    font-size: clamp(2.5rem, 6vw, 4.6rem);
    line-height: 1.02;
    letter-spacing: -0.05em;
}

.hero-copy {
    max-width: 720px;
    margin: 0;
    font-size: 1.05rem;
    color: var(--text-secondary);
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.btn,
.btn-secondary,
.btn-ghost,
.icon-button,
.tab-button,
.link-chip,
.interactive-card,
.list-item,
.sidebar-item,
.doc-item,
.folder-card,
.record-card,
.info-tile,
.back-link {
    transition:
        transform var(--transition-medium),
        box-shadow var(--transition-medium),
        border-color var(--transition-fast),
        background-color var(--transition-fast),
        color var(--transition-fast),
        opacity var(--transition-fast);
    will-change: transform;
}

.btn,
.btn-secondary,
.btn-ghost,
.tab-button,
.back-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 46px;
    padding: 0 18px;
    border-radius: 999px;
    font-weight: 600;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn {
    color: #fff;
    background: linear-gradient(135deg, var(--brand), var(--brand-cool));
    box-shadow: 0 14px 28px rgba(244, 143, 177, 0.24);
}

.btn:hover,
.btn-secondary:hover,
.btn-ghost:hover,
.tab-button:hover,
.back-link:hover {
    transform: translateY(-2px) scale(1.01);
    box-shadow: var(--shadow-focus), var(--shadow-soft);
}

.btn:active,
.btn-secondary:active,
.btn-ghost:active,
.tab-button:active,
.back-link:active,
.folder-card:active,
.record-card:active,
.doc-item:active,
.sidebar-item:active {
    transform: translateY(0) scale(0.985);
}

.btn-secondary {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.86);
    border: 1px solid rgba(148, 163, 184, 0.22);
    box-shadow: var(--shadow-soft);
}

.btn-ghost,
.back-link {
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.52);
    border: 1px solid rgba(148, 163, 184, 0.2);
}

.btn:focus-visible,
.btn-secondary:focus-visible,
.btn-ghost:focus-visible,
.tab-button:focus-visible,
.back-link:focus-visible,
.icon-button:focus-visible,
.sidebar-item:focus-visible,
.doc-item:focus-visible,
.folder-card:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
}

.icon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(148, 163, 184, 0.2);
    box-shadow: var(--shadow-soft);
}

.icon-button:hover {
    transform: translateY(-2px) rotate(-6deg);
    color: var(--brand);
}

.meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.meta-pill,
.tag,
.stat-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
}

.meta-pill,
.stat-pill {
    background: rgba(255, 255, 255, 0.76);
    border: 1px solid rgba(148, 163, 184, 0.18);
    color: var(--text-secondary);
}

.tag {
    background: rgba(244, 143, 177, 0.12);
    color: var(--brand-cool);
}

.stats-grid,
.info-grid,
.folder-grid,
.record-grid,
.page-grid {
    display: grid;
    gap: 18px;
}

.stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

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

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

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

.stat-card,
.info-tile,
.folder-card,
.record-card,
.doc-item,
.sidebar-item,
.toolbar {
    position: relative;
    background: var(--bg-surface-strong);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
}

.stat-card,
.info-tile,
.record-card,
.folder-card,
.doc-item {
    border-radius: var(--radius-md);
}

.stat-card,
.info-tile,
.folder-card,
.record-card {
    padding: 18px;
}

.stat-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 140px;
}

.stat-card__value {
    font-size: clamp(2rem, 4vw, 2.8rem);
    line-height: 1;
    font-weight: 800;
    letter-spacing: -0.04em;
}

.stat-card__label {
    color: var(--text-secondary);
    font-weight: 600;
}

.stat-card__meta {
    color: var(--text-tertiary);
    font-size: 0.92rem;
}

.info-tile {
    overflow: hidden;
}

.info-tile:hover,
.folder-card:hover,
.record-card:hover,
.doc-item:hover,
.sidebar-item:hover {
    box-shadow: var(--shadow-focus), 0 22px 40px rgba(15, 23, 42, 0.1);
    border-color: var(--border-strong);
}

.record-card:hover,
.doc-item:hover,
.sidebar-item:hover {
    transform: translateY(-4px);
}

[data-tilt].is-tilting {
    transition:
        box-shadow var(--transition-medium),
        border-color var(--transition-fast),
        background-color var(--transition-fast),
        color var(--transition-fast),
        opacity var(--transition-fast);
}

.info-tile__header,
.record-card__header,
.doc-item__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.tile-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: var(--bg-accent-soft);
    color: var(--brand);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.56);
}

.tile-label {
    display: block;
    margin-top: 14px;
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

.tile-value {
    margin-top: 4px;
    font-size: 1.06rem;
    font-weight: 700;
    color: var(--text-primary);
}

.empty-state {
    display: grid;
    place-items: center;
    gap: 12px;
    min-height: 180px;
    padding: 28px;
    border: 1px dashed rgba(148, 163, 184, 0.42);
    border-radius: var(--radius-md);
    color: var(--text-tertiary);
    text-align: center;
    background: rgba(255, 255, 255, 0.48);
}

.empty-state i {
    font-size: 2rem;
    color: rgba(244, 143, 177, 0.48);
}

.loading-ring {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 3px solid rgba(244, 143, 177, 0.15);
    border-top-color: var(--brand-cool);
    animation: spin 0.9s linear infinite;
}

.surface-caption {
    color: var(--text-tertiary);
    font-size: 0.92rem;
}

.page-transition {
    position: fixed;
    inset: 0;
    z-index: 9999;
    pointer-events: none;
    background:
        radial-gradient(circle at 20% 20%, rgba(244, 143, 177, 0.18), transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(144, 202, 249, 0.18), transparent 35%),
        rgba(248, 250, 252, 0.72);
    opacity: 0;
    visibility: hidden;
    transform: scale(1.02);
    transition: opacity 220ms ease, transform 220ms ease, visibility 0s linear 220ms;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

.page-transition.is-active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
    transition-delay: 0s;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal.is-revealed {
    transition-delay: 0ms;
}

.stagger-1 { transition-delay: 40ms; }
.stagger-2 { transition-delay: 100ms; }
.stagger-3 { transition-delay: 160ms; }
.stagger-4 { transition-delay: 220ms; }

.floating-orb {
    position: absolute;
    width: 110px;
    height: 110px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(244, 143, 177, 0.18), transparent 72%);
    animation: drift 7s ease-in-out infinite;
    pointer-events: none;
}

.floating-orb--warm {
    background: radial-gradient(circle, rgba(144, 202, 249, 0.18), transparent 70%);
    animation-duration: 9s;
}

.divider {
    width: 100%;
    height: 1px;
    margin: 20px 0;
    background: linear-gradient(90deg, transparent, rgba(148, 163, 184, 0.28), transparent);
}

.hidden {
    display: none !important;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes drift {
    0%, 100% {
        transform: translate3d(0, 0, 0) scale(1);
    }
    50% {
        transform: translate3d(0, -18px, 0) scale(1.05);
    }
}

/* ── 骨架屏闪烁 ── */
@keyframes shimmer {
    0% { background-position: -400% 0; }
    100% { background-position: 400% 0; }
}

/* ── 卡片悬浮呼吸光晕 ── */
@keyframes glow-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(244, 143, 177, 0); }
    50% { box-shadow: 0 0 20px 4px rgba(244, 143, 177, 0.08); }
}

/* ── 文字渐变流动 ── */
@keyframes gradient-text-flow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ── 骨架屏占位块 ── */
.skeleton {
    display: block;
    height: 1em;
    border-radius: 6px;
    background: linear-gradient(
        90deg,
        rgba(148, 163, 184, 0.08) 25%,
        rgba(148, 163, 184, 0.20) 40%,
        rgba(148, 163, 184, 0.08) 55%
    );
    background-size: 400% 100%;
    animation: shimmer 1.8s ease-in-out infinite;
    pointer-events: none;
    user-select: none;
}

/* ── 骨架屏列表（通用） ── */
.skeleton-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 8px 0;
}
.skeleton-block {
    height: 16px;
    border-radius: 8px;
    background: linear-gradient(
        90deg,
        rgba(148,163,184,0.06) 25%,
        rgba(148,163,184,0.16) 40%,
        rgba(148,163,184,0.06) 55%
    );
    background-size: 400% 100%;
    animation: shimmer 1.8s ease-in-out infinite;
}
.skeleton-block--w60 { width: 60%; }
.skeleton-block--w75 { width: 75%; }
.skeleton-block--w85 { width: 85%; }
.skeleton-block--w40 { width: 40%; }
.skeleton-block--h24 { height: 24px; border-radius: 10px; }
.skeleton-block--h32 { height: 32px; border-radius: 12px; }
.skeleton-block--h48 { height: 48px; border-radius: 14px; }
.skeleton-block--full { width: 100%; }

/* ── 玻璃卡片加载态 ── */
.glass-panel.is-loading .skeleton-block {
    background: linear-gradient(
        90deg,
        rgba(148,163,184,0.04) 25%,
        rgba(148,163,184,0.14) 40%,
        rgba(148,163,184,0.04) 55%
    );
    background-size: 400% 100%;
}

/* ── 卡片悬浮光晕 ── */
.glass-panel.card-glow {
    transition:
        transform var(--transition-medium),
        box-shadow var(--transition-medium),
        border-color var(--transition-fast);
}
.glass-panel.card-glow:hover {
    border-color: rgba(244, 143, 177, 0.25);
    animation: glow-pulse 2s ease-in-out infinite;
}

/* ── 链接下划线动画 ── */
.link-animated {
    position: relative;
    text-decoration: none;
}
.link-animated::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 100%;
    height: 1.5px;
    background: var(--brand);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-medium);
}
.link-animated:hover::after {
    transform: scaleX(1);
}

/* ── 渐变文字 ── */
.text-gradient {
    background: linear-gradient(90deg, var(--brand), var(--brand-cool), var(--brand));
    background-size: 200% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-text-flow 4s ease-in-out infinite;
}

/* ── 入场：从下方缩放进入 ── */
.reveal-scale {
    opacity: 0;
    transform: translateY(20px) scale(0.96);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.reveal-scale.is-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* ── 统计数字卡片悬浮效果 ── */
.stat-card:hover .stat-card__value {
    color: var(--brand);
    transition: color var(--transition-medium);
}

/* ── 玻璃卡片入场轻微弹跳 ── */
.glass-panel.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity var(--transition-slow), transform var(--transition-medium);
}
.glass-panel.reveal {
    transition: opacity var(--transition-slow), transform var(--transition-medium);
}

/* ── 毛玻璃悬浮发光 ── */
.glass-panel.glow-hover {
    transition:
        transform var(--transition-medium),
        box-shadow var(--transition-medium),
        border-color var(--transition-fast);
}
.glass-panel.glow-hover:hover {
    transform: translateY(-2px);
    box-shadow: 0 24px 48px rgba(15, 23, 42, 0.12), 0 0 0 1px rgba(244, 143, 177, 0.15);
}

/* ── 数字滚动动画 ── */
.counter-value {
    display: inline-block;
    transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.counter-value.is-counting {
    animation: counter-bounce 0.15s ease-out;
}
@keyframes counter-bounce {
    0% { transform: scale(1); }
    50% { transform: scale(1.08); }
    100% { transform: scale(1); }
}

/* ── 鼠标跟随光晕 ── */
.cursor-glow {
    position: fixed;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(244, 143, 177, 0.06), transparent 70%);
    pointer-events: none;
    z-index: 0;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
    will-change: left, top;
    mix-blend-mode: normal;
}
.cursor-glow--blue {
    background: radial-gradient(circle, rgba(144, 202, 249, 0.06), transparent 70%);
}

/* ── 页面加载进度条 ── */
.page-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--brand), var(--brand-cool));
    z-index: 10000;
    transition: width 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
    box-shadow: 0 0 10px rgba(244, 143, 177, 0.3);
}
.page-progress.is-done {
    opacity: 0;
    transition: opacity 0.4s ease 0.2s;
}

/* ── 打字机光标 ── */
.typewriter-cursor {
    display: inline-block;
    width: 2px;
    height: 1em;
    background: var(--brand);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: blink-cursor 1s step-end infinite;
}
@keyframes blink-cursor {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* ── 标签云浮动 ── */
.tag-pill--float {
    animation: tag-float 3s ease-in-out infinite;
}
.tag-pill--float:nth-child(2n) {
    animation-delay: 0.5s;
    animation-duration: 3.5s;
}
.tag-pill--float:nth-child(3n) {
    animation-delay: 1s;
    animation-duration: 4s;
}
@keyframes tag-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

/* ── 平滑滚动 ── */
html {
    scroll-behavior: smooth;
}

/* ── 涟漪效果容器 ── */
.ripple-container {
    position: relative;
    overflow: hidden;
}
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(244, 143, 177, 0.15);
    transform: scale(0);
    animation: ripple-expand 0.6s ease-out forwards;
    pointer-events: none;
}
@keyframes ripple-expand {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* ── 卡片悬浮边框流光 ── */
.glow-border {
    position: relative;
}
.glow-border::before {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, transparent, rgba(244, 143, 177, 0.3), rgba(144, 202, 249, 0.3), transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}
.glow-border:hover::before {
    opacity: 1;
}

@media (max-width: 960px) {
    .page-frame {
        padding-top: 20px;
    }

    .section-card {
        padding: 22px;
    }
}

@media (max-width: 720px) {
    .site-shell {
        width: min(var(--content-width), calc(100vw - 20px));
    }

    .page-frame {
        padding-bottom: 40px;
    }

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

    .hero-title {
        font-size: clamp(2.25rem, 11vw, 3rem);
    }

    .button-row {
        flex-direction: column;
        align-items: stretch;
    }

    .btn,
    .btn-secondary,
    .btn-ghost,
    .back-link {
        width: 100%;
    }

    .reveal {
        opacity: 1;
        transform: none;
        transition-delay: 0ms;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation: none !important;
        transition-duration: 1ms !important;
        transition-delay: 0ms !important;
        scroll-behavior: auto !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}