/* 统一样式变量 - 优化版 */
:root {
    /* 深色渐变背景 - 从深蓝到青绿 */
    --primary-gradient: linear-gradient(145deg, #0b1d2c 0%, #112b3a 35%, #163a46 65%, #1b4c50 100%);

    /* 主题色 - 青蓝与霓虹绿 */
    --accent-color: #2bd4c4;
    --accent-glow: rgba(43, 212, 196, 0.25);
    --accent-secondary: #6aa7ff;
    --accent-secondary-glow: rgba(106, 167, 255, 0.25);

    /* 背景色系 */
    --bg-dark: #0b1018;
    --bg-card: rgba(17, 27, 42, 0.92);
    --bg-card-hover: rgba(23, 35, 54, 0.95);
    --bg-input: rgba(12, 20, 35, 0.75);
    --bg-input-focus: rgba(18, 30, 50, 0.9);

    /* 文本色系 */
    --text-primary: #f4f7fb;
    --text-secondary: rgba(244, 247, 251, 0.78);
    --text-muted: rgba(244, 247, 251, 0.55);
    --text-placeholder: rgba(43, 212, 196, 0.35);

    /* 边框与阴影 */
    --border-color: rgba(120, 190, 210, 0.25);
    --border-color-hover: rgba(120, 190, 210, 0.45);
    --border-glow: 0 0 12px rgba(43, 212, 196, 0.2);
    --shadow-card: 0 10px 26px rgba(3, 8, 18, 0.55);
    --shadow-input: inset 0 2px 6px rgba(0, 0, 0, 0.35);
    --shadow-input-focus: inset 0 2px 8px rgba(0, 0, 0, 0.45), 0 0 16px rgba(43, 212, 196, 0.18);

    /* 状态色 */
    --success-color: #31d38b;
    --error-color: #ff6b6b;
    --warning-color: #f6b04d;

    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;

    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

/* 优化滚动条 */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.4);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent-color), var(--accent-secondary));
    border-radius: 5px;
    border: 2px solid rgba(0, 0, 0, 0.4);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #00e0ff, #00ffaa);
    box-shadow: 0 0 10px var(--accent-glow);
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--accent-color) rgba(0, 0, 0, 0.4);
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.65;
    min-height: 100vh;
    font-weight: 400;
}

body.home {
    --accent-color: #5dd6ff;
    --accent-glow: rgba(93, 214, 255, 0.35);
    --accent-secondary: #8aa7ff;
    --accent-secondary-glow: rgba(138, 167, 255, 0.3);
    --bg-card: rgba(10, 24, 44, 0.78);
    --bg-card-hover: rgba(14, 32, 56, 0.88);
    --bg-input: rgba(10, 22, 38, 0.7);
    --bg-input-focus: rgba(14, 30, 54, 0.82);
    --border-color: rgba(120, 190, 255, 0.28);
    --border-color-hover: rgba(140, 210, 255, 0.45);
    --shadow-card: 0 14px 28px rgba(2, 8, 20, 0.55);
}

/* 增强背景效果 */
#particles-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    z-index: -1;
}

body.home #particles-bg {
    background: url("../image.png") center/cover no-repeat;
}

body.home #particles-bg::before,
body.home #particles-bg::after {
    content: none;
}

#particles-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 15% 85%, rgba(43, 212, 196, 0.18) 0%, transparent 55%),
        radial-gradient(circle at 85% 15%, rgba(106, 167, 255, 0.14) 0%, transparent 55%),
        radial-gradient(circle at 50% 50%, rgba(43, 212, 196, 0.06) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
}

#particles-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(106, 167, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(106, 167, 255, 0.035) 1px, transparent 1px);
    background-size: 72px 72px;
    opacity: 0.35;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.8;
        transform: scale(1.02);
    }
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.container.full-height {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 优化头部 */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(22px);
    box-shadow: var(--shadow-card);
    transition: var(--transition-normal);
}

.header:hover {
    border-color: var(--border-color-hover);
    box-shadow: 0 12px 32px rgba(3, 8, 18, 0.6), var(--border-glow);
}

.header.compact {
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.network-icon {
    width: 48px;
    height: 48px;
    color: var(--accent-color);
    filter: drop-shadow(0 0 10px var(--accent-glow));
    animation: iconGlow 3s ease-in-out infinite;
}

@keyframes iconGlow {

    0%,
    100% {
        filter: drop-shadow(0 0 12px var(--accent-glow));
    }

    50% {
        filter: drop-shadow(0 0 20px var(--accent-glow));
    }
}

.title-section {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.main-title {
    font-size: 1.55rem;
    font-weight: 700;
    background: linear-gradient(120deg, var(--accent-color) 0%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 16px var(--accent-glow);
}

.subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(12, 20, 35, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-normal);
}

.nav-link:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    background: rgba(12, 24, 40, 0.85);
    box-shadow: var(--border-glow);
    transform: translateX(-2px);
}

/* 聊天界面优化 */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(25px);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-height: calc(100vh - 280px);
    min-height: 400px;
}

.message {
    display: flex;
    gap: var(--spacing-sm);
    max-width: 85%;
    animation: messageIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.message.ai {
    align-self: flex-start;
}

.message.user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

@keyframes messageIn {
    from {
        opacity: 0;
        transform: translateY(15px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.message-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.message.ai .message-avatar {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    color: var(--bg-dark);
}

.message.user .message-avatar {
    background: rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
}

.message-content {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    line-height: 1.2;
}

.message.ai .message-content {
    background: rgba(43, 212, 196, 0.08);
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 4px;
}

.message.user .message-content {
    background: linear-gradient(135deg, var(--accent-secondary), var(--accent-color));
    color: var(--bg-dark);
    font-weight: 500;
    border-bottom-right-radius: 4px;
    box-shadow: 0 6px 18px var(--accent-secondary-glow);
}

.message-content p {
    margin-bottom: 0.5rem;
}

.message-content p:last-child {
    margin-bottom: 0;
}

/* Markdown 优化 */
.message-content h2 {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 0.8rem 0 0.5rem;
    color: var(--accent-color);
}

.message-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 0.6rem 0 0.4rem;
    color: var(--accent-color);
}

.message-content h4 {
    font-size: 1.05rem;
    font-weight: 600;
    margin: 0.5rem 0 0.3rem;
    color: var(--accent-secondary);
}

.message-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.5rem 0;
    font-size: 0.9rem;
}

.message-content th,
.message-content td {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    text-align: left;
}

.message-content th {
    background: rgba(43, 212, 196, 0.12);
    font-weight: 600;
}

.message-content code {
    background: rgba(0, 0, 0, 0.5);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: 'Consolas', monospace;
    color: var(--accent-secondary);
}

.message-content pre {
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    margin: 0.5rem 0;
    overflow-x: auto;
    position: relative;
}

.message-content pre code {
    background: transparent;
    padding: 0;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--accent-secondary);
    display: block;
    white-space: pre;
}

.message-content pre::before {
    content: 'Code';
    position: absolute;
    top: 0;
    right: 0;
    padding: 3px 10px;
    font-size: 0.7rem;
    font-weight: 600;
    background: var(--accent-color);
    color: var(--bg-dark);
    border-radius: 0 var(--radius-sm) 0 6px;
}

.message-content ul,
.message-content ol {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
}

.message-content li {
    margin: 0.1rem 0;
}

.typing-indicator {
    display: flex;
    gap: 5px;
    padding: 8px 0;
}

.typing-dot {
    width: 9px;
    height: 9px;
    background: var(--accent-color);
    border-radius: 50%;
    animation: typingBounce 1.4s infinite ease-in-out;
    box-shadow: 0 0 8px var(--accent-glow);
}

.typing-dot:nth-child(1) {
    animation-delay: 0s;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typingBounce {

    0%,
    80%,
    100% {
        transform: scale(0.6);
        opacity: 0.5;
    }

    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* 优化输入区域 */
.chat-input-area {
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    background: rgba(10, 15, 25, 0.5);
}

.chat-input-wrapper {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-end;
}

.chat-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    resize: none;
    min-height: 46px;
    max-height: 120px;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-input);
}

.chat-input:focus {
    outline: none;
    border-color: var(--accent-color);
    background: var(--bg-input-focus);
    box-shadow: var(--shadow-input-focus);
}

.chat-input::placeholder {
    color: var(--text-placeholder);
    font-weight: 300;
}

.send-btn {
    width: 46px;
    height: 46px;
    border: none;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    color: var(--bg-dark);
    font-size: 1.3rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.send-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.send-btn:active {
    transform: scale(0.95);
}

.send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* 主页卡片优化 */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.module-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(25px);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
}

.module-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-color-hover);
    box-shadow: 0 14px 36px rgba(3, 8, 18, 0.6), var(--border-glow);
    background: var(--bg-card-hover);
}

.module-card-header {
    padding: var(--spacing-lg);
    text-align: center;
    background: linear-gradient(135deg, rgba(43, 212, 196, 0.12), rgba(106, 167, 255, 0.08));
}

.module-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.module-title {
    font-size: 1.3rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.module-card-body {
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
}

.module-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.module-status {
    margin-top: var(--spacing-sm);
    font-size: 0.85rem;
    color: var(--accent-secondary);
}

/* 问卷专用 - textarea 优化 */
textarea,
input[type="text"],
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    min-height: 80px;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-input);
    line-height: 1.6;
}

textarea:focus,
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: var(--accent-color);
    background: var(--bg-input-focus);
    box-shadow: var(--shadow-input-focus);
}

textarea::placeholder,
input::placeholder {
    color: var(--text-placeholder);
    font-weight: 300;
}

/* 数据分析页 */
.glass-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(25px);
    box-shadow: var(--shadow-card);
    padding: var(--spacing-lg);
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-desc {
    margin-top: var(--spacing-xs);
    color: var(--text-secondary);
}

.analysis-intro {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.analysis-gate {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
}

.primary-btn {
    border: none;
    padding: 0.65rem 1.4rem;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    color: var(--bg-dark);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--accent-glow);
}

.gate-hint {
    width: 100%;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.gate-hint.error {
    color: var(--error-color);
}

.analysis-sections {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.analysis-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.analysis-tag {
    font-size: 0.8rem;
    padding: 0.2rem 0.65rem;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    color: var(--accent-color);
    background: rgba(43, 212, 196, 0.08);
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.metric-card {
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    background: rgba(43, 212, 196, 0.08);
    border: 1px solid rgba(43, 212, 196, 0.2);
}

.metric-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.metric-value {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.analysis-placeholder {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px dashed var(--border-color);
    color: var(--text-secondary);
    background: rgba(10, 20, 35, 0.45);
}

.analysis-placeholder strong {
    display: block;
    color: var(--accent-color);
    margin-bottom: var(--spacing-xs);
}

.is-hidden {
    display: none;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-sm);
    font-size: 0.95rem;
}

.data-table th,
.data-table td {
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--border-color);
    text-align: left;
}

.data-table th {
    background: rgba(43, 212, 196, 0.12);
    color: var(--accent-color);
    font-weight: 600;
}

.data-table td strong {
    color: var(--text-primary);
}

.analysis-note {
    margin-top: var(--spacing-xs);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.status-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.2rem 0.7rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid transparent;
}

.status-pill.ok {
    color: var(--bg-dark);
    background: linear-gradient(135deg, rgba(43, 212, 196, 0.85), rgba(106, 167, 255, 0.7));
    border-color: rgba(43, 212, 196, 0.6);
    box-shadow: 0 6px 16px rgba(43, 212, 196, 0.25);
}

.status-pill.wait {
    color: var(--accent-color);
    background: rgba(43, 212, 196, 0.12);
    border-color: rgba(43, 212, 196, 0.4);
}

.status-pill.fail {
    color: #ffced4;
    background: rgba(255, 71, 87, 0.2);
    border-color: rgba(255, 71, 87, 0.45);
    box-shadow: 0 6px 16px rgba(255, 71, 87, 0.2);
}

.qa-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.qa-card {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(43, 212, 196, 0.3);
    background: linear-gradient(135deg, rgba(43, 212, 196, 0.12), rgba(106, 167, 255, 0.08));
    box-shadow: inset 0 0 12px rgba(0, 0, 0, 0.25);
}

.qa-card-title {
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: var(--spacing-xs);
    font-size: 1rem;
}

.qa-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.word-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(43, 212, 196, 0.2);
    background: radial-gradient(circle at 20% 20%, rgba(43, 212, 196, 0.2), transparent 60%),
        radial-gradient(circle at 80% 30%, rgba(106, 167, 255, 0.18), transparent 65%),
        rgba(10, 20, 35, 0.45);
    justify-content: center;
    align-items: center;
    min-height: 170px;
    position: relative;
    overflow: hidden;
}

.word-cloud::after {
    content: '';
    position: absolute;
    inset: 20%;
    background: radial-gradient(circle, rgba(43, 212, 196, 0.15), transparent 65%);
    filter: blur(20px);
    opacity: 0.9;
    pointer-events: none;
}

.word-cloud .word {
    padding: 0.6rem 1.4rem;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(43, 212, 196, 0.2), rgba(106, 167, 255, 0.18));
    border: 1px solid rgba(43, 212, 196, 0.45);
    color: var(--text-primary);
    box-shadow: 0 12px 30px rgba(43, 212, 196, 0.18);
    transition: var(--transition-normal);
    position: relative;
    z-index: 1;
    text-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
}

.word-cloud .word:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(43, 212, 196, 0.25);
}

.word-cloud .word-xl {
    font-size: 1.9rem;
    font-weight: 700;
    background: linear-gradient(135deg, rgba(43, 212, 196, 0.55), rgba(106, 167, 255, 0.35));
    border-color: rgba(43, 212, 196, 0.7);
    box-shadow: 0 0 30px rgba(43, 212, 196, 0.35);
}

.word-cloud .word-lg {
    font-size: 1.4rem;
    font-weight: 600;
    background: linear-gradient(135deg, rgba(43, 212, 196, 0.35), rgba(106, 167, 255, 0.2));
    border-color: rgba(43, 212, 196, 0.55);
}

.word-cloud .word-md {
    font-size: 1.1rem;
    font-weight: 500;
}

.word-cloud .word-sm {
    font-size: 0.95rem;
}

/* 响应式 */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }

    .header {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-md);
    }

    .main-title {
        font-size: 1.3rem;
    }

    .chat-messages {
        max-height: calc(100vh - 240px);
        min-height: 300px;
    }

    .message {
        max-width: 95%;
    }
}