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

body {
    font-family: 'Georgia', 'Noto Serif SC', 'Source Han Serif SC', 'STSong', serif;
    background: #1a1a2e;
    color: #e0d5c1;
    height: 100vh;
    overflow: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(139, 92, 56, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(139, 92, 56, 0.06) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.app-container {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    padding: 0 20px;
}

header {
    flex-shrink: 0;
    text-align: center;
    padding: 16px 0 12px;
    border-bottom: 1px solid rgba(139, 92, 56, 0.3);
}

header h1 {
    font-size: 1.5rem;
    font-weight: normal;
    letter-spacing: 0.15em;
    color: #c9a96e;
    margin-bottom: 2px;
}

header .subtitle {
    font-size: 0.8rem;
    color: #8b7355;
    letter-spacing: 0.1em;
}

.main-layout {
    display: flex;
    flex: 1;
    gap: 16px;
    padding: 16px 0;
    overflow: hidden;
    min-height: 0;
}

.config-panel {
    flex-shrink: 0;
    width: 400px;
    background: rgba(30, 30, 50, 0.8);
    border: 1px solid rgba(139, 92, 56, 0.2);
    border-radius: 12px;
    padding: 20px;
    overflow-y: auto;
}

.config-panel h2 {
    font-size: 1.1rem;
    color: #c9a96e;
    font-weight: normal;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    color: #a09080;
    margin-bottom: 6px;
    letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid rgba(139, 92, 56, 0.25);
    border-radius: 8px;
    background: rgba(20, 20, 40, 0.8);
    color: #e0d5c1;
    font-family: inherit;
    font-size: 0.9rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #c9a96e;
}

.form-group textarea {
    resize: vertical;
    min-height: 60px;
}

.api-config-toggle {
    margin-bottom: 14px;
    border: 1px solid rgba(139, 92, 56, 0.2);
    border-radius: 8px;
    overflow: hidden;
}

.api-config-toggle summary {
    padding: 10px 14px;
    cursor: pointer;
    font-size: 0.9rem;
    color: #c9a96e;
    background: rgba(20, 20, 40, 0.5);
    user-select: none;
}

.api-config-toggle[open] summary {
    border-bottom: 1px solid rgba(139, 92, 56, 0.15);
}

.api-config-body {
    padding: 12px 14px;
    background: rgba(15, 15, 30, 0.5);
}

.philosopher-selector {
    margin-bottom: 12px;
}

.philosopher-list {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 6px;
    margin-bottom: 8px;
}

.philosopher-card {
    background: rgba(20, 20, 40, 0.6);
    border: 1px solid rgba(139, 92, 56, 0.2);
    border-radius: 8px;
    padding: 8px 10px;
    cursor: pointer;
    transition: all 0.25s;
    position: relative;
    text-align: center;
}

.philosopher-card:hover {
    border-color: rgba(139, 92, 56, 0.5);
    background: rgba(30, 30, 55, 0.8);
}

.philosopher-card.selected {
    border-color: #c9a96e;
    background: rgba(139, 92, 56, 0.1);
    box-shadow: 0 0 20px rgba(139, 92, 56, 0.1);
}

.philosopher-card .avatar {
    font-size: 1.1rem;
    margin-bottom: 2px;
    cursor: pointer;
    display: inline-block;
    transition: transform 0.2s;
}

.philosopher-card .avatar:hover {
    transform: scale(1.25);
}

.philosopher-card .name {
    font-size: 0.75rem;
    color: #c9a96e;
    margin-bottom: 1px;
}

.philosopher-card .school {
    font-size: 0.65rem;
    color: #8b7355;
}

.philosopher-card .order-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #c9a96e;
    color: #1a1a2e;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    display: none;
}

.philosopher-card.selected .order-badge {
    display: flex;
}

.selected-philosophers {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
    min-height: 32px;
}

.selected-philosopher-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(139, 92, 56, 0.15);
    border: 1px solid rgba(139, 92, 56, 0.3);
    border-radius: 6px;
    padding: 4px 10px;
    font-size: 0.8rem;
    color: #c9a96e;
}

.selected-philosopher-tag .remove {
    cursor: pointer;
    color: #8b7355;
    font-size: 1rem;
    line-height: 1;
}

.selected-philosopher-tag .remove:hover {
    color: #d4a574;
}

.config-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: 1px solid #c9a96e;
    border-radius: 8px;
    background: transparent;
    color: #c9a96e;
    font-family: inherit;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.25s;
    white-space: nowrap;
    flex-shrink: 0;
}

.btn:hover {
    background: rgba(201, 169, 110, 0.1);
}

.btn.primary {
    background: #c9a96e;
    color: #1a1a2e;
    border: none;
}

.btn.primary:hover {
    background: #d4a574;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-row {
    display: flex;
    gap: 8px;
    margin-top: 20px;
    justify-content: flex-end;
    flex-wrap: nowrap;
}

.dialogue-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: rgba(30, 30, 50, 0.8);
    border: 1px solid rgba(139, 92, 56, 0.2);
    border-radius: 12px;
    padding: 20px;
    overflow: hidden;
    min-width: 0;
}

.dialogue-section h2 {
    flex-shrink: 0;
    font-size: 1.1rem;
    color: #c9a96e;
    font-weight: normal;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
}

.dialogue-topic {
    flex-shrink: 0;
    text-align: center;
    padding: 12px;
    margin-bottom: 12px;
    background: rgba(139, 92, 56, 0.08);
    border-radius: 8px;
    border: 1px dashed rgba(139, 92, 56, 0.2);
}

.dialogue-topic .topic-label {
    font-size: 0.7rem;
    color: #8b7355;
    letter-spacing: 0.1em;
    margin-bottom: 2px;
}

.dialogue-topic .topic-text {
    font-size: 1rem;
    color: #e0d5c1;
}

.dialogue-messages {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-right: 4px;
}

.message-card {
    display: flex;
    gap: 16px;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-avatar {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    border: 2px solid rgba(139, 92, 56, 0.3);
    background: rgba(20, 20, 40, 0.8);
}

.message-body {
    flex: 1;
}

.message-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.message-name {
    font-size: 0.95rem;
    color: #c9a96e;
    font-weight: bold;
}

.message-round {
    font-size: 0.7rem;
    color: #8b7355;
    background: rgba(139, 92, 56, 0.1);
    padding: 2px 8px;
    border-radius: 10px;
}

.message-content {
    font-size: 0.85rem;
    line-height: 1.7;
    color: #d0c5b0;
    white-space: pre-wrap;
    word-break: break-word;
}

.message-content p {
    margin-bottom: 8px;
}

.typing-indicator {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    color: #8b7355;
    font-size: 0.85rem;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.typing-dots {
    display: flex;
    gap: 4px;
}

.typing-dots span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #c9a96e;
    animation: dotBounce 1.4s infinite;
}

.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotBounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-6px); }
}

.status-bar {
    flex-shrink: 0;
    text-align: center;
    padding: 8px 0 0;
    color: #8b7355;
    font-size: 0.85rem;
}

.status-bar.completed {
    color: #7a9a7a;
}

.progress-bar-wrap {
    flex-shrink: 0;
    height: 4px;
    background: rgba(139, 92, 56, 0.15);
    border-radius: 2px;
    margin: 0 0 8px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: #c9a96e;
    border-radius: 2px;
    transition: width 0.4s ease;
    width: 0%;
}

.typing-timer {
    font-size: 0.75rem;
    color: #8b7355;
    margin-left: 8px;
    font-variant-numeric: tabular-nums;
}

.source-badge {
    font-size: 0.65rem;
    padding: 1px 6px;
    border-radius: 4px;
    margin-left: 6px;
    vertical-align: middle;
}

.source-badge.api {
    background: rgba(122, 154, 122, 0.2);
    color: #7a9a7a;
}

.source-badge.simulation {
    background: rgba(201, 169, 110, 0.2);
    color: #c9a96e;
}

.export-btn {
    flex-shrink: 0;
    display: none;
    margin-top: 8px;
    padding: 8px 16px;
    border: 1px solid rgba(139, 92, 56, 0.3);
    border-radius: 6px;
    background: rgba(30, 30, 50, 0.8);
    color: #c9a96e;
    font-family: inherit;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
    align-self: center;
}

.export-btn:hover {
    background: rgba(139, 92, 56, 0.1);
}

.export-btn.show {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.export-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: #7a9a7a;
    color: #1a1a2e;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 0.85rem;
    z-index: 200;
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.export-toast.show {
    opacity: 1;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    color: #6a5a4a;
    gap: 12px;
}

.empty-state .icon {
    font-size: 3rem;
    opacity: 0.4;
}

.empty-state .text {
    font-size: 0.9rem;
    letter-spacing: 0.05em;
}

.philosopher-config-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 100;
    align-items: center;
    justify-content: center;
}

.philosopher-config-modal.active {
    display: flex;
}

.modal-content {
    background: #1e1e32;
    border: 1px solid rgba(139, 92, 56, 0.3);
    border-radius: 12px;
    padding: 24px;
    max-width: 520px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-content h3 {
    font-size: 1.1rem;
    color: #c9a96e;
    font-weight: normal;
    margin-bottom: 16px;
}

.modal-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 20px;
    flex-wrap: nowrap;
}

@media (max-width: 900px) {
    .main-layout {
        flex-direction: column;
    }

    .config-panel {
        width: 100%;
        flex-shrink: 1;
        max-height: 45%;
    }

    .config-row {
        grid-template-columns: 1fr;
    }

    .philosopher-list {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }

    header h1 {
        font-size: 1.3rem;
    }
}

.toast {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(-120px);
    background: #c9a96e;
    color: #1a1a2e;
    padding: 14px 32px;
    border-radius: 10px;
    font-family: inherit;
    font-size: 1rem;
    letter-spacing: 0.05em;
    z-index: 200;
    opacity: 0;
    transition: transform 0.4s ease, opacity 0.4s ease;
    pointer-events: none;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Summary card */
.summary-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
    margin: 1rem 0;
    background: linear-gradient(135deg, rgba(26, 28, 35, 0.95), rgba(20, 22, 28, 0.95));
    border: 1px solid rgba(201, 169, 110, 0.3);
    border-radius: 12px;
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

.summary-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid rgba(201, 169, 110, 0.15);
}

.summary-icon {
    font-size: 1.5rem;
}

.summary-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #c9a96e;
    letter-spacing: 0.05em;
}

.summary-content {
    font-size: 0.95rem;
    line-height: 1.8;
    color: #c8c8d0;
}

.summary-content p {
    margin-bottom: 0.8rem;
}

.summary-content strong {
    color: #c9a96e;
    font-weight: 600;
}

.summary-content h3 {
    font-size: 1.1rem;
    color: #c9a96e;
    margin: 1.2rem 0 0.5rem 0;
    font-weight: 600;
}

.summary-content h4 {
    font-size: 1rem;
    color: #d4b87a;
    margin: 1rem 0 0.4rem 0;
    font-weight: 600;
}

.summary-content ol,
.summary-content ul {
    margin: 0.4rem 0;
    padding-left: 1.5rem;
}

.summary-content li {
    margin-bottom: 0.3rem;
    line-height: 1.7;
}

.think-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 50;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.think-overlay.active {
    opacity: 1;
}

.think-label {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    color: #c9a96e;
    font-size: 1.2rem;
    letter-spacing: 0.1em;
    text-align: center;
}

.think-label .dots {
    display: inline-block;
    animation: dotPulse 1.5s infinite;
}

@keyframes dotPulse {
    0%, 20% { opacity: 0; }
    50% { opacity: 1; }
    80%, 100% { opacity: 0; }
}

/* 苏格拉底: 上升的问号 */
.think-socrates .particle {
    position: absolute;
    font-size: 1.8rem;
    color: rgba(201, 169, 110, 0.4);
    animation: floatUpQuestion 4s infinite;
}

@keyframes floatUpQuestion {
    0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
    20% { opacity: 0.6; }
    80% { opacity: 0.3; }
    100% { transform: translateY(-10vh) rotate(360deg); opacity: 0; }
}

/* 尼采: 闪电裂纹 */
.think-nietzsche .crack {
    position: absolute;
    width: 2px;
    background: linear-gradient(to bottom, rgba(255, 200, 80, 0.6), transparent);
    animation: crackFlash 3s infinite;
    transform-origin: top center;
}

@keyframes crackFlash {
    0% { opacity: 0; transform: scaleY(0); }
    15% { opacity: 0.8; }
    30% { opacity: 0; transform: scaleY(1.5); }
    100% { opacity: 0; transform: scaleY(0); }
}

/* 庄子: 蝴蝶 */
.think-zhuangzi .butterfly {
    position: absolute;
    font-size: 2rem;
    animation: butterflyFloat 6s infinite ease-in-out;
}

@keyframes butterflyFloat {
    0% { transform: translate(-10vw, 80vh) rotate(0deg); opacity: 0; }
    10% { opacity: 0.7; }
    50% { transform: translate(50vw, 30vh) rotate(180deg); }
    90% { opacity: 0.7; }
    100% { transform: translate(110vw, 60vh) rotate(360deg); opacity: 0; }
}

/* 康德: 几何线框 */
.think-kant .geo-line {
    position: absolute;
    border: 1px solid rgba(201, 169, 110, 0.3);
    animation: geoPulse 4s infinite;
}

@keyframes geoPulse {
    0% { opacity: 0; transform: scale(0.8); }
    30% { opacity: 0.5; }
    70% { opacity: 0.2; }
    100% { opacity: 0; transform: scale(1.2); }
}

/* 孔子: 暖光涟漪 */
.think-confucius .ripple {
    position: absolute;
    width: 60px; height: 60px;
    border: 1px solid rgba(201, 169, 110, 0.4);
    border-radius: 50%;
    animation: rippleExpand 4s infinite;
}

@keyframes rippleExpand {
    0% { transform: scale(0); opacity: 0.6; }
    100% { transform: scale(20); opacity: 0; }
}

/* 萨特: 烟雾 */
.think-sartre .smoke {
    position: absolute;
    width: 40px; height: 40px;
    background: radial-gradient(circle, rgba(180, 160, 140, 0.3), transparent);
    border-radius: 50%;
    animation: smokeRise 5s infinite;
}

@keyframes smokeRise {
    0% { transform: translateY(0) scale(1); opacity: 0.4; }
    100% { transform: translateY(-60vh) scale(3); opacity: 0; }
}

/* 亚里士多德: 方格子 */
.think-aristotle .square {
    position: absolute;
    width: 30px; height: 30px;
    border: 1px solid rgba(201, 169, 110, 0.3);
    animation: squareSpin 5s infinite;
}

@keyframes squareSpin {
    0% { opacity: 0; transform: rotate(0deg) scale(0); }
    30% { opacity: 0.5; }
    70% { opacity: 0.2; }
    100% { opacity: 0; transform: rotate(180deg) scale(1.5); }
}

/* 笛卡尔: 坐标网格 */
.think-descartes .grid-line {
    position: absolute;
    background: rgba(201, 169, 110, 0.15);
    animation: gridScan 4s infinite;
}

@keyframes gridScan {
    0% { opacity: 0; }
    30% { opacity: 0.6; }
    60% { opacity: 0.2; }
    100% { opacity: 0; }
}

/* 卢梭: 生长的藤蔓 */
.think-rousseau .vine {
    position: absolute;
    width: 2px;
    background: linear-gradient(to top, rgba(120, 160, 100, 0.5), transparent);
    animation: vineGrow 5s infinite;
    transform-origin: bottom center;
}

@keyframes vineGrow {
    0% { transform: scaleY(0); opacity: 0; }
    30% { opacity: 0.6; }
    70% { opacity: 0.3; }
    100% { transform: scaleY(1.5); opacity: 0; }
}

/* 王阳明: 心跳光晕 */
.think-wangyangming .heart-glow {
    position: absolute;
    width: 80px; height: 80px;
    background: radial-gradient(circle, rgba(201, 169, 110, 0.3), transparent 70%);
    border-radius: 50%;
    animation: heartBeat 2s infinite;
}

@keyframes heartBeat {
    0% { transform: scale(0.5); opacity: 0.6; }
    15% { transform: scale(1.2); opacity: 0.8; }
    30% { transform: scale(0.5); opacity: 0.6; }
    45% { transform: scale(1.2); opacity: 0.8; }
    60% { transform: scale(0.5); opacity: 0.6; }
    100% { transform: scale(0.5); opacity: 0; }
}

/* 叔本华: 黑暗漩涡 */
.think-schopenhauer .vortex {
    position: absolute;
    width: 60px; height: 60px;
    border: 2px solid rgba(100, 90, 120, 0.4);
    border-radius: 50%;
    border-top-color: transparent;
    animation: vortexSpin 4s infinite linear;
}

@keyframes vortexSpin {
    0% { transform: rotate(0deg) scale(0.5); opacity: 0; }
    20% { opacity: 0.5; }
    80% { opacity: 0.3; }
    100% { transform: rotate(720deg) scale(1.5); opacity: 0; }
}

/* 福柯: 监视之眼 */
.think-foucault .watch-eye {
    position: absolute;
    width: 6px; height: 6px;
    background: rgba(201, 169, 110, 0.5);
    border-radius: 50%;
    animation: eyeWatch 4s infinite;
}

@keyframes eyeWatch {
    0% { opacity: 0; transform: scale(0); }
    15% { opacity: 0.7; transform: scale(1); }
    85% { opacity: 0.7; }
    100% { opacity: 0; transform: scale(2); }
}

/* 柏拉图: 金色光束 */
.think-plato .beam {
    position: absolute;
    width: 2px;
    background: linear-gradient(to bottom, rgba(201, 169, 110, 0.6), transparent);
    animation: beamDescend 5s infinite;
    top: 0;
}

@keyframes beamDescend {
    0% { height: 0; opacity: 0; }
    30% { opacity: 0.6; }
    60% { opacity: 0.3; }
    100% { height: 100vh; opacity: 0; }
}

/* 老子: 飘渺云雾 */
.think-laozi .cloud {
    position: absolute;
    width: 100px; height: 40px;
    background: radial-gradient(ellipse, rgba(180, 170, 150, 0.3), transparent 70%);
    border-radius: 50%;
    animation: cloudDrift 8s infinite ease-in-out;
}

@keyframes cloudDrift {
    0% { transform: translateX(-20vw); opacity: 0; }
    20% { opacity: 0.4; }
    80% { opacity: 0.4; }
    100% { transform: translateX(120vw); opacity: 0; }
}

/* 马克思: 齿轮旋转 */
.think-marx .gear {
    position: absolute;
    width: 50px; height: 50px;
    border: 3px dashed rgba(201, 169, 110, 0.4);
    border-radius: 50%;
    animation: gearSpin 4s infinite linear;
}

@keyframes gearSpin {
    0% { transform: rotate(0deg); opacity: 0.5; }
    100% { transform: rotate(360deg); opacity: 0; }
}

/* 亚当·斯密: 上升的箭头 */
.think-smith .arrow {
    position: absolute;
    width: 0; height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-bottom: 20px solid rgba(80, 160, 80, 0.5);
    animation: arrowRise 4s infinite;
}

@keyframes arrowRise {
    0% { transform: translateY(0) scale(0.8); opacity: 0; }
    30% { opacity: 0.6; }
    100% { transform: translateY(-80vh) scale(1.5); opacity: 0; }
}

/* 波伏娃: 挣脱的锁链 */
.think-debeauvoir .chain {
    position: absolute;
    height: 3px;
    background: linear-gradient(to right, transparent, rgba(201, 169, 110, 0.5), transparent);
    animation: chainBreak 4s infinite;
}

@keyframes chainBreak {
    0% { width: 0; opacity: 0.6; }
    40% { width: 100px; opacity: 0.6; }
    60% { opacity: 0; width: 120px; }
    100% { width: 0; opacity: 0; }
}

/* 爱因斯坦: 轨道粒子 */
.think-einstein .orbit {
    position: absolute;
    width: 4px; height: 4px;
    background: rgba(201, 169, 110, 0.7);
    border-radius: 50%;
    animation: orbitFloat 5s infinite ease-in-out;
}

@keyframes orbitFloat {
    0% { transform: translate(0, 0) scale(1); opacity: 0.6; }
    25% { transform: translate(60px, -40px) scale(0.5); }
    50% { transform: translate(0, -80px) scale(1.2); }
    75% { transform: translate(-60px, -40px) scale(0.5); }
    100% { transform: translate(0, 0) scale(1); opacity: 0; }
}

/* 佛陀: 莲花瓣 */
.think-buddha .petal {
    position: absolute;
    width: 20px; height: 35px;
    background: rgba(200, 160, 180, 0.3);
    border-radius: 50% 50% 0 0;
    animation: petalFall 6s infinite;
    transform-origin: bottom center;
}

@keyframes petalFall {
    0% { transform: translateY(-10vh) rotate(0deg); opacity: 0; }
    20% { opacity: 0.5; }
    50% { transform: translateY(40vh) rotate(180deg); }
    100% { transform: translateY(100vh) rotate(360deg); opacity: 0; }
}

/* 马基雅维利: 棋子 */
.think-machiavelli .piece {
    position: absolute;
    width: 20px; height: 30px;
    border: 2px solid rgba(201, 169, 110, 0.4);
    border-radius: 50% 50% 10% 10%;
    animation: chessFall 4s infinite;
}

@keyframes chessFall {
    0% { transform: translateY(-10vh) scale(1); opacity: 0; }
    20% { opacity: 0.6; }
    60% { opacity: 0.3; }
    100% { transform: translateY(100vh) scale(0.8); opacity: 0; }
}

/* 弗洛伊德: 墨迹扩散 */
.think-freud .blot {
    position: absolute;
    background: radial-gradient(circle, rgba(100, 80, 120, 0.3), transparent 60%);
    border-radius: 50%;
    animation: blotSpread 5s infinite;
}

@keyframes blotSpread {
    0% { width: 10px; height: 10px; opacity: 0.4; }
    70% { opacity: 0.2; }
    100% { width: 150px; height: 150px; opacity: 0; }
}

/* 阿伦特: 烛光 */
.think-arendt .flame {
    position: absolute;
    width: 8px; height: 20px;
    background: radial-gradient(ellipse at bottom, rgba(241, 196, 15, 0.5), transparent);
    border-radius: 50% 50% 10% 10%;
    animation: flameFlicker 3s infinite;
}

@keyframes flameFlicker {
    0% { transform: scaleY(1) scaleX(1); opacity: 0.5; }
    25% { transform: scaleY(0.8) scaleX(1.2); opacity: 0.6; }
    50% { transform: scaleY(1.1) scaleX(0.9); opacity: 0.5; }
    75% { transform: scaleY(0.9) scaleX(1.1); opacity: 0.6; }
    100% { transform: scaleY(1) scaleX(1); opacity: 0; }
}

/* 墨子: 盾牌交错 */
.think-mozi .shield {
    position: absolute;
    width: 40px; height: 50px;
    border: 2px solid rgba(201, 169, 110, 0.3);
    border-radius: 20% 20% 40% 40%;
    animation: shieldAppear 4s infinite;
}

@keyframes shieldAppear {
    0% { opacity: 0; transform: scale(0); }
    30% { opacity: 0.5; transform: scale(1); }
    80% { opacity: 0.2; }
    100% { opacity: 0; transform: scale(1.3); }
}

/* 伏尔泰: 飞舞的羽毛笔 */
.think-voltaire .quill {
    position: absolute;
    font-size: 1.5rem;
    color: rgba(201, 169, 110, 0.5);
    animation: quillFly 5s infinite;
}

@keyframes quillFly {
    0% { transform: translate(0, 0) rotate(0deg); opacity: 0; }
    20% { opacity: 0.6; }
    50% { transform: translate(60px, -40px) rotate(180deg); }
    80% { opacity: 0.4; }
    100% { transform: translate(-40px, -80px) rotate(360deg); opacity: 0; }
}

/* 达尔文: 分支树 */
.think-darwin .branch {
    position: absolute;
    height: 2px;
    background: rgba(120, 160, 100, 0.4);
    animation: branchGrow 5s infinite;
    transform-origin: left center;
}

@keyframes branchGrow {
    0% { width: 0; opacity: 0; }
    30% { opacity: 0.6; }
    70% { opacity: 0.3; }
    100% { width: 100px; opacity: 0; }
}

/* 孙子: 排兵布阵 */
.think-suntzu .soldier {
    position: absolute;
    width: 8px; height: 12px;
    background: rgba(201, 169, 110, 0.4);
    border-radius: 20% 20% 0 0;
    animation: soldierMarch 2s infinite linear;
}

@keyframes soldierMarch {
    0% { transform: translateX(0) scale(1); opacity: 0.6; }
    100% { transform: translateX(200px) scale(1); opacity: 0; }
}

/* 维特根斯坦: 浮动的字母 */
.think-wittgenstein .letter {
    position: absolute;
    font-family: monospace;
    color: rgba(201, 169, 110, 0.4);
    animation: letterFloat 6s infinite ease-in-out;
}

@keyframes letterFloat {
    0% { transform: translateY(60vh); opacity: 0; }
    20% { opacity: 0.5; }
    50% { transform: translateY(10vh); }
    80% { opacity: 0.5; }
    100% { transform: translateY(-10vh); opacity: 0; }
}

/* 图灵: 二进制雨 */
.think-turing .binary {
    position: absolute;
    font-family: monospace;
    font-size: 0.9rem;
    color: rgba(100, 200, 100, 0.4);
    animation: binaryRain 3s infinite linear;
}

@keyframes binaryRain {
    0% { transform: translateY(-10vh); opacity: 0.6; }
    100% { transform: translateY(110vh); opacity: 0; }
}