* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
}

:root {
    --bg-light: #FAFAFA;
    --bg-warm: #F5F5F5;
    --bg-accent: #EEEEEE;
    --accent: #9E9E9E;
    --accent-deep: #757575;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-muted: #999999;
    --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 8px 40px rgba(0, 0, 0, 0.12);
    --shadow-strong: 0 20px 60px rgba(0, 0, 0, 0.18);
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 32px;
    --font-display: serif;
    --font-body: sans-serif;
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

@font-face {
    font-family: 'HongLeiZhuoShu';
    src: url('../fonts/鸿雷拙书简体.otf') format('opentype');
    font-display: swap;
}

@font-face {
    font-family: 'CenterTitle';
    src: url('../fonts/font-subset.woff2') format('woff2');
    font-display: swap;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-warm) 50%, var(--bg-accent) 100%);
    background-attachment: fixed;
    line-height: 1.7;
    position: relative;
}

.loader {
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-warm) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.8s var(--ease-smooth), visibility 0.8s;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-inner {
    position: relative;
    width: 80px;
    height: 80px;
}

.loader-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid transparent;
}

.loader-ring.ring1 {
    border-bottom-color: var(--accent);
    animation: loaderSpin1 1.5s linear infinite;
}

.loader-ring.ring2 {
    border-right-color: var(--accent-deep);
    animation: loaderSpin2 1.5s linear infinite;
}

.loader-ring.ring3 {
    border-top-color: var(--bg-accent);
    animation: loaderSpin3 1.5s linear infinite;
}

@keyframes loaderSpin1 {
    from { transform: rotateX(35deg) rotateY(-45deg) rotateZ(0deg); }
    to { transform: rotateX(35deg) rotateY(-45deg) rotateZ(360deg); }
}

@keyframes loaderSpin2 {
    from { transform: rotateX(50deg) rotateY(10deg) rotateZ(0deg); }
    to { transform: rotateX(50deg) rotateY(10deg) rotateZ(360deg); }
}

@keyframes loaderSpin3 {
    from { transform: rotateX(35deg) rotateY(55deg) rotateZ(0deg); }
    to { transform: rotateX(35deg) rotateY(55deg) rotateZ(360deg); }
}

.loader-text {
    margin-top: 2rem;
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--text-secondary);
    letter-spacing: 3px;
    text-transform: uppercase;
}

.bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
    background:
        radial-gradient(120% 100% at 18% 8%, rgba(250, 250, 250, 0.8) 0%, rgba(250, 250, 250, 0) 55%),
        radial-gradient(110% 90% at 88% 12%, rgba(245, 245, 245, 0.7) 0%, rgba(245, 245, 245, 0) 50%),
        linear-gradient(160deg, var(--bg-light) 0%, var(--bg-warm) 45%, var(--bg-accent) 100%);
}

.bg .layer {
    position: absolute;
    will-change: transform;
    border-radius: 50%;
}

.bg .l1 {
    width: 56vmax;
    height: 56vmax;
    left: -14vmax;
    top: -12vmax;
    background: radial-gradient(circle at 32% 32%, rgba(200, 200, 200, 0.25), transparent 72%);
}

.bg .l2 {
    width: 50vmax;
    height: 50vmax;
    right: -16vmax;
    top: 4vmax;
    background: radial-gradient(circle at 58% 40%, rgba(220, 220, 220, 0.30), transparent 72%);
}

.bg .l3 {
    width: 46vmax;
    height: 46vmax;
    left: 30vmax;
    bottom: -18vmax;
    background: radial-gradient(circle at 50% 50%, rgba(180, 180, 180, 0.20), transparent 70%);
}

.bg .l4 {
    width: 34vmax;
    height: 34vmax;
    left: 6vmax;
    top: 44vmax;
    background: radial-gradient(circle at 50% 50%, rgba(200, 200, 200, 0.18), transparent 74%);
}

.bg .grid {
    position: absolute;
    inset: -40%;
    will-change: transform;
    background-image:
        linear-gradient(rgba(150, 150, 150, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(150, 150, 150, 0.06) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: radial-gradient(circle at 50% 42%, #000 30%, transparent 78%);
}

.bg .dust {
    position: absolute;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0.25;
    filter: blur(1px);
}

.bg .grain {
    position: absolute;
    inset: 0;
    opacity: 0.035;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

.bg .flow-field {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    opacity: 0.35;
    mix-blend-mode: multiply;
    will-change: transform;
}

.fluid-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
    pointer-events: none;
    mix-blend-mode: multiply;
}

.canvas-container {
    position: fixed;
    inset: 0;
    overflow: hidden;
    cursor: grab;
    z-index: 5;
}

.canvas-container:active {
    cursor: grabbing;
}

.canvas-world {
    position: absolute;
    width: 100%;
    height: 100%;
    transform-origin: center center;
    transition: transform 0.1s ease-out;
    perspective: 1000px;
}

.connections {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1000px;
    height: 600px;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 0;
}

.connection-line {
    fill: none;
    stroke: url(#lineGrad);
    stroke-width: 2;
    stroke-dasharray: 8 4;
    animation: dashFlow 20s linear infinite;
}

@keyframes dashFlow {
    to { stroke-dashoffset: -1000; }
}

.node {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    transform-style: preserve-3d;
    transition: transform 0.05s linear;
}

.center-node {
    z-index: 10;
}

.center-node .node-content {
    text-align: center;
    position: relative;
}

.center-blob {
    width: 180px;
    height: 180px;
    margin: 0 auto;
}

.center-blob svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}

.center-title {
    font-family: 'CenterTitle', cursive;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-deep);
    margin-bottom: 0.5rem;
    letter-spacing: -0.5px;
}

.center-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 300;
}

.node-glow {
    position: absolute;
    top: calc(50% + 60px);
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(158, 158, 158, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    animation: glowPulse 4s ease-in-out infinite;
    pointer-events: none;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.1); }
}

.node:not(.center-node) {
    transition: none;
}

.card {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(158, 158, 158, 0.25);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.8rem;
    box-shadow: var(--shadow-soft);
    transition: box-shadow 0.35s var(--ease-smooth), border-color 0.35s var(--ease-smooth);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 2;
}

.node:not(.center-node):hover .card {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.16);
    border-color: var(--accent);
}

.about-node .card {
    transform: rotate(-2deg);
}

.philosophy-node .card {
    transform: rotate(1deg);
}

.qingzhu-node .card {
    transform: rotate(1.5deg);
}

.effects-node .card {
    transform: rotate(-1deg);
}

.node:not(.center-node):hover .card {
    transform: rotate(0deg);
}

.card-icon {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    color: var(--accent-deep);
}

.card-icon svg,
.card-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.card h2 {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-deep);
    margin: 0;
    white-space: nowrap;
}

.card-desc {
    display: none;
}

.decoration {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(calc(-50% + var(--deco-x, 0px)), calc(-50% + var(--deco-y, 0px)));
    font-size: 2rem;
    color: var(--accent);
    opacity: 0.3;
    pointer-events: none;
    animation-duration: 8s;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
    animation-fill-mode: backwards;
    z-index: 6;
}

.deco-1 { animation-delay: 0s; }
.deco-2 { animation-delay: 2s; }
.deco-3 { animation-delay: 4s; font-size: 3rem; }
.deco-4 { animation-delay: 6s; font-size: 2.5rem; }

.hint {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(158, 158, 158, 0.3);
    border-radius: 30px;
    padding: 0.6rem 1.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    z-index: 100;
    animation: hintFade 5s ease-in-out forwards;
    animation-delay: 2s;
}

@keyframes hintFade {
    0% { opacity: 0; transform: translateX(-50%) translateY(20px); }
    20% { opacity: 1; transform: translateX(-50%) translateY(0); }
    80% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(-20px); pointer-events: none; }
}

.main-content {
    position: fixed;
    inset: 0;
    z-index: 5;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-content.slide-out {
    transform: translateX(-100%);
    opacity: 0;
    pointer-events: none;
}

.qingzhu-overlay {
    position: fixed;
    inset: 0;
    z-index: 50;
    transform: translateX(100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    overflow-x: hidden;
    background: transparent;
    scrollbar-width: thin;
    scrollbar-color: rgba(158, 158, 158, 0.3) transparent;
}

.qingzhu-overlay::-webkit-scrollbar {
    width: 4px;
}

.qingzhu-overlay::-webkit-scrollbar-track {
    background: transparent;
}

.qingzhu-overlay::-webkit-scrollbar-thumb {
    background: rgba(158, 158, 158, 0.3);
    border-radius: 2px;
}

.qingzhu-overlay.active {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
}

.qingzhu-back {
    position: fixed;
    top: 24px;
    left: 24px;
    z-index: 60;
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 30px;
    padding: 10px 22px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: box-shadow 0.3s var(--ease-smooth), border-color 0.3s, transform 0.3s var(--ease-smooth), background 0.3s;
    opacity: 0;
    transform: translateX(-20px);
}

.qingzhu-overlay.active .qingzhu-back {
    opacity: 1;
    transform: translateX(0);
    transition: opacity 0.5s ease 0.3s, transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) 0.3s, box-shadow 0.3s, border-color 0.3s, background 0.3s;
}

.qingzhu-back:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    border-color: var(--accent);
    transform: translateX(-4px);
    background: rgba(255, 255, 255, 0.95);
}

.qingzhu-back svg {
    width: 18px;
    height: 18px;
    transition: transform 0.3s var(--ease-smooth);
}

.qingzhu-back:hover svg {
    transform: translateX(-3px);
}

.qingzhu-panel {
    max-width: 780px;
    margin: 0 auto;
    padding: 100px 40px 60px;
}

.qingzhu-header {
    text-align: center;
    margin-bottom: 64px;
    opacity: 0;
    transform: translateY(24px);
}

.qingzhu-overlay.active .qingzhu-header {
    animation: qzFadeUp 0.6s ease 0.2s forwards;
}

.qingzhu-app-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    border-radius: 26px;
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.1);
    position: relative;
}

.qingzhu-app-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 26px;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.3) inset;
    pointer-events: none;
}

.qingzhu-app-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.qingzhu-title {
    font-family: var(--font-display);
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--accent-deep);
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.qingzhu-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    font-weight: 300;
    line-height: 1.9;
}

.qingzhu-philosophy {
    margin-bottom: 64px;
    opacity: 0;
    transform: translateY(24px);
}

.qingzhu-overlay.active .qingzhu-philosophy {
    animation: qzFadeUp 0.6s ease 0.35s forwards;
}

.qingzhu-chapter {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.8rem;
    color: var(--accent);
    letter-spacing: 5px;
    text-transform: uppercase;
    margin-bottom: 14px;
    position: relative;
}

.qingzhu-chapter::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--accent), transparent);
}

.qingzhu-heading {
    font-family: var(--font-display);
    font-size: 1.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 32px;
}

.qingzhu-heading.center {
    text-align: center;
}

.qingzhu-heading.light {
    color: var(--accent-deep);
}

.qingzhu-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.qingzhu-feature {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-sm);
    padding: 28px 24px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    transition: transform 0.4s var(--ease-smooth), box-shadow 0.4s var(--ease-smooth);
    position: relative;
    overflow: hidden;
}

.qingzhu-feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.qingzhu-feature:hover::before {
    opacity: 0.5;
}

.qingzhu-feature:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
}

.qingzhu-feature-num {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--accent);
    opacity: 0.25;
    margin-bottom: 12px;
    line-height: 1;
}

.qingzhu-feature h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--accent-deep);
    margin-bottom: 10px;
}

.qingzhu-feature p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

.qingzhu-quote {
    position: relative;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: var(--radius-md);
    padding: 48px 40px;
    margin-bottom: 64px;
    text-align: center;
    opacity: 0;
    transform: translateY(24px);
}

.qingzhu-overlay.active .qingzhu-quote {
    animation: qzFadeUp 0.6s ease 0.5s forwards;
}

.qingzhu-quote-mark {
    font-family: var(--font-display);
    font-size: 4rem;
    color: var(--accent);
    opacity: 0.2;
    line-height: 1;
    position: absolute;
}

.qingzhu-quote-mark:first-child {
    top: 16px;
    left: 24px;
}

.qingzhu-quote-mark.end {
    bottom: 16px;
    right: 24px;
}

.qingzhu-quote blockquote {
    font-family: var(--font-display);
    font-size: 1.05rem;
    color: var(--text-primary);
    line-height: 2.1;
    font-weight: 400;
}

.qingzhu-download {
    text-align: center;
    padding: 40px 0;
    opacity: 0;
    transform: translateY(24px);
}

.qingzhu-overlay.active .qingzhu-download {
    animation: qzFadeUp 0.6s ease 0.65s forwards;
}

@keyframes qzFadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.qingzhu-download-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.qingzhu-download-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.qingzhu-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 30px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: transform 0.3s var(--ease-smooth), box-shadow 0.3s var(--ease-smooth);
    cursor: pointer;
}

.qingzhu-btn svg {
    width: 20px;
    height: 20px;
}

.qingzhu-btn.primary {
    background: var(--accent-deep);
    color: white;
    box-shadow: 0 4px 20px rgba(117, 117, 117, 0.2);
}

.qingzhu-btn.primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(117, 117, 117, 0.3);
}

.qingzhu-btn.secondary {
    background: rgba(255, 255, 255, 0.85);
    color: var(--text-primary);
    border: 1px solid rgba(158, 158, 158, 0.25);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.qingzhu-btn.secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    border-color: var(--accent);
}

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s var(--ease-smooth), visibility 0.5s;
    padding: 20px;
    overflow-y: auto;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    position: relative;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-lg);
    padding: 0;
    max-width: 540px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    overflow-x: hidden;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(255, 255, 255, 0.4) inset;
    transform: scale(0.92) translateY(30px);
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    scrollbar-width: thin;
    scrollbar-color: rgba(158, 158, 158, 0.3) transparent;
}

.modal-container::-webkit-scrollbar {
    width: 4px;
}

.modal-container::-webkit-scrollbar-track {
    background: transparent;
}

.modal-container::-webkit-scrollbar-thumb {
    background: rgba(158, 158, 158, 0.3);
    border-radius: 2px;
}

.modal-overlay.active .modal-container {
    transform: scale(1) translateY(0);
}

.modal-accent {
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent), var(--accent-deep), var(--accent), transparent);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-close {
    position: fixed;
    top: 24px;
    right: 24px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(158, 158, 158, 0.15);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s var(--ease-smooth);
    z-index: 201;
    opacity: 0;
    transform: scale(0.8);
}

.modal-overlay.active .modal-close {
    opacity: 1;
    transform: scale(1);
    transition: opacity 0.3s ease 0.2s, transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s, background 0.3s, border-color 0.3s, color 0.3s;
}

.modal-close:hover {
    background: rgba(158, 158, 158, 0.15);
    color: var(--text-primary);
    transform: rotate(90deg) scale(1);
    border-color: rgba(158, 158, 158, 0.3);
}

.modal-close svg {
    width: 16px;
    height: 16px;
}

.modal-header {
    text-align: center;
    padding: 44px 40px 0;
}

.modal-icon {
    width: 68px;
    height: 68px;
    margin: 0 auto 20px;
    border-radius: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    opacity: 0;
    transform: scale(0.6);
    transition: opacity 0.5s ease 0.1s, transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) 0.1s;
}

.modal-overlay.active .modal-icon {
    opacity: 1;
    transform: scale(1);
}

.modal-icon::after {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 28px;
    background: inherit;
    opacity: 0.15;
    filter: blur(12px);
}

.about-icon {
    background: linear-gradient(135deg, #e8e8e8, #d0d0d0);
    color: var(--accent-deep);
}

.philosophy-icon {
    background: linear-gradient(135deg, #e0e0e0, #c8c8c8);
    color: var(--accent-deep);
}

.modal-icon svg {
    width: 28px;
    height: 28px;
    position: relative;
    z-index: 1;
}

.modal-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 14px;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.4s ease 0.15s, transform 0.4s ease 0.15s;
}

.modal-overlay.active .modal-title {
    opacity: 1;
    transform: translateY(0);
}

.modal-divider {
    width: 36px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-deep));
    margin: 0 auto;
    border-radius: 2px;
    opacity: 0;
    transform: scaleX(0);
    transition: opacity 0.4s ease 0.2s, transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s;
}

.modal-overlay.active .modal-divider {
    opacity: 1;
    transform: scaleX(1);
}

.modal-body {
    padding: 28px 40px 40px;
}

.modal-content {
    color: var(--text-secondary);
    line-height: 1.8;
}

.modal-text {
    font-size: 0.95rem;
    text-align: center;
    margin-bottom: 28px;
    color: var(--text-secondary);
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s ease 0.25s, transform 0.4s ease 0.25s;
}

.modal-overlay.active .modal-text {
    opacity: 1;
    transform: translateY(0);
}

.modal-cards {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.modal-card {
    background: rgba(250, 250, 250, 0.8);
    border: 1px solid rgba(158, 158, 158, 0.12);
    border-radius: var(--radius-sm);
    padding: 18px 20px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    transition: transform 0.35s var(--ease-smooth), box-shadow 0.35s var(--ease-smooth), border-color 0.35s var(--ease-smooth), background 0.35s var(--ease-smooth);
    opacity: 0;
    transform: translateX(-16px);
}

.modal-overlay.active .modal-card {
    opacity: 1;
    transform: translateX(0);
}

.modal-overlay.active .modal-card:nth-child(1) { transition-delay: 0.3s; }
.modal-overlay.active .modal-card:nth-child(2) { transition-delay: 0.38s; }
.modal-overlay.active .modal-card:nth-child(3) { transition-delay: 0.46s; }

.modal-card:hover {
    transform: translateX(6px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    border-color: rgba(158, 158, 158, 0.25);
    background: rgba(255, 255, 255, 0.95);
}

.modal-card-icon {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(158, 158, 158, 0.12), rgba(158, 158, 158, 0.04));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--accent-deep);
    transition: transform 0.3s var(--ease-smooth);
}

.modal-card:hover .modal-card-icon {
    transform: scale(1.08);
}

.modal-card-icon svg {
    width: 18px;
    height: 18px;
}

.modal-card h3 {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.modal-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin: 0;
}

.philosophy-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 28px;
}

.philosophy-item {
    display: flex;
    gap: 18px;
    align-items: flex-start;
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.modal-overlay.active .philosophy-item:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: 0.3s; }
.modal-overlay.active .philosophy-item:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 0.4s; }
.modal-overlay.active .philosophy-item:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 0.5s; }

.philosophy-num {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-deep));
    color: white;
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 14px rgba(117, 117, 117, 0.25);
    position: relative;
}

.philosophy-num::after {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    background: inherit;
    opacity: 0.2;
    filter: blur(8px);
}

.philosophy-content h3 {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.philosophy-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

.philosophy-quote {
    position: relative;
    background: linear-gradient(135deg, rgba(158, 158, 158, 0.06), rgba(158, 158, 158, 0.02));
    border: 1px solid rgba(158, 158, 158, 0.1);
    border-radius: var(--radius-md);
    padding: 28px 32px;
    text-align: center;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.4s ease 0.55s, transform 0.4s ease 0.55s;
}

.modal-overlay.active .philosophy-quote {
    opacity: 1;
    transform: translateY(0);
}

.philosophy-quote .quote-mark {
    position: absolute;
    top: 8px;
    left: 16px;
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--accent);
    opacity: 0.2;
    line-height: 1;
}

.philosophy-quote p {
    font-family: var(--font-display);
    font-size: 0.95rem;
    color: var(--text-primary);
    line-height: 1.9;
    margin: 0;
}

@media (max-width: 768px) {
    .center-blob {
        width: 120px;
        height: 120px;
    }

    .center-title {
        font-size: 1.8rem;
    }

    .center-subtitle {
        font-size: 0.9rem;
    }

    .card {
        padding: 0.4rem 0.6rem;
        gap: 0.4rem;
    }

    .card h2 {
        font-size: 0.55rem;
    }

    .card-icon {
        width: 18px;
        height: 18px;
    }

    .card-desc {
        font-size: 0.6rem;
    }

    .modal-container {
        max-height: 90vh;
    }

    .modal-header {
        padding: 36px 24px 0;
    }

    .modal-body {
        padding: 24px 24px 32px;
    }

    .modal-title {
        font-size: 1.4rem;
    }

    .modal-icon {
        width: 56px;
        height: 56px;
        border-radius: 18px;
    }

    .philosophy-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .philosophy-num {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .qingzhu-panel {
        padding: 90px 24px 48px;
    }

    .qingzhu-title {
        font-size: 2.2rem;
    }

    .qingzhu-heading {
        font-size: 1.5rem;
    }

    .qingzhu-quote {
        padding: 36px 24px;
    }

    .qingzhu-features {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}