/* 继承设计令牌中的CSS变量 */
html, body {
    max-width: 100%;
    overflow-x: hidden;
}

:root {
    /* 主题色 */
    --color-primary-darkest: #3d1a5b;
    --color-primary-darker: #5b2c87;
    --color-primary-dark: #7c3aed;
    --color-primary: #a78bfa;
    --color-primary-light: #c4b5fd;
    --color-primary-lighter: #ddd6fe;
    --color-primary-lightest: #f3f4f6;

    --color-neutral-darkest: #0d0e0f;
    --color-neutral-darker: #141517;
    --color-neutral-dark: #1a1b1d;
    --color-neutral: #25262a;
    --color-neutral-light: #36373d;
    --color-neutral-lighter: #4a4c55;
    --color-neutral-lightest: #62646f;

    /* 文本颜色 */
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-tertiary: #7a7a7a;
    --text-on-primary: #0a0a0a;

    /* 背景颜色 */
    --bg-darkest: #0d0e0f;
    --bg-darker: #141517;
    --bg-dark: #1a1b1d;

    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* 圆角 */
    --radius-sm: 0.125rem;
    --radius-md: 0.25rem;
    --radius-lg: 0.5rem;

    /* 阴影 */
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.5), 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5), 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.5), 0 10px 10px rgba(0, 0, 0, 0.3);

    /* 过渡 */
    --transition-normal: 250ms;
    --ease-out: cubic-bezier(0, 0, 0.2, 1);

    /* 导航栏高度变量 */
    --navbar-height: 90px;
}

/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'MiSans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-darkest);
    color: var(--text-primary);
    line-height: 1.5;
}

section {
    min-height: 30vh;
}

/* 统一：标题与内容间距 */
section > h2 {
    margin-top: 100px; /* 添加与导航栏等高的上边距 */
    margin-bottom: var(--spacing-lg);
    font-size: 2.5rem;
    color: var(--text-primary);
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
    scroll-margin-top: 90px; /* 添加滚动边距，确保标题完全可见 */
}

section > h2.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (min-width: 768px) {
    section > h2 {
        margin-bottom: var(--spacing-xl);
        font-size: 3rem;
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

/* 新增和修改的样式 */

/* Hero区域样式调整 */
.hero-banner {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    margin-bottom: 0;
    border-radius: 0;
    box-shadow: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    padding: var(--spacing-xl);
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-description {
    color: var(--color-primary-light);
    margin-top: var(--spacing-md);
    font-size: 1.25rem;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1.5s var(--ease-out) forwards 1.5s;
}

/* 优势部分样式 */
.advantages-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin-top: 0; /* 调整：由标题的margin-bottom统一控制间距 */
}

.advantage-item {
    background: var(--bg-darker);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-neutral-light);
}

.advantage-item h3 {
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.advantage-item p {
    color: var(--text-secondary);
    line-height: 1.75;
}

/* 用户评价部分 */
.voices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: 0; /* 由标题的 margin-bottom 统一控制间距 */
}

.voice-card {
    background: var(--bg-darker);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-neutral-light);
}

.user-info h4 {
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-xs);
}

.user-info p {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.review {
    margin-top: var(--spacing-md);
    color: var(--text-secondary);
    font-style: italic;
}

/* 数据统计部分 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
    text-align: center;
}

.stat-item h3 {
    color: var(--color-primary);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s var(--ease-out) forwards;
}

.stat-item p {
    color: var(--text-secondary);
}

/* FAQ部分 */
.faq-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin-top: 0; /* 调整：由标题的margin-bottom统一控制间距 */
}

.faq-item {
    background: var(--bg-darker);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-neutral-light);
}

.faq-item h3 {
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.faq-item p {
    color: var(--text-secondary);
    line-height: 1.75;
}

/* 响应式调整 */
@media (min-width: 768px) {
    /* 固定为两列，确保第三张跨列后与上面两张总宽度对齐 */
    .advantages-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    /* 第三个（最后一个）卡片占满整行并与容器左右对齐 */
    .advantages-grid .advantage-item:last-child {
        grid-column: 1 / -1;    /* 横跨两列 */
        justify-self: stretch;  /* 拉伸以对齐左右 */
        width: 100%;
        max-width: none;
    }

    .faq-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

/* CTA按钮样式 - 纯透明毛玻璃效果 + 脉冲边框 */
.cta-button,
.nav-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-dark);
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 9999px;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background-color var(--transition-normal) var(--ease-out);
    position: relative;
    animation: breathe 3s ease-in-out infinite;
}

/* 脉冲边框效果 */
.cta-button::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg,
            rgba(124, 58, 237, 0.8),
            rgba(59, 130, 246, 0.8),
            rgba(16, 185, 129, 0.8),
            rgba(245, 101, 101, 0.8),
            rgba(124, 58, 237, 0.8));
    background-size: 400% 400%;
    border-radius: 9999px;
    z-index: -1;
    animation: pulsingBorder 3s ease-in-out infinite;
    filter: blur(3px);
}

/* 内部高光效果 - 仅用于增强玻璃质感 */
.cta-button::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.08) 0%,
            rgba(255, 255, 255, 0.02) 50%,
            rgba(255, 255, 255, 0) 100%);
    border-radius: 9999px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s var(--ease-out);
}

/* 呼吸动画 */
@keyframes breathe {

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

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

/* 脉冲边框动画 */
@keyframes pulsingBorder {

    0%,
    100% {
        background-position: 0% 50%;
        opacity: 0.6;
    }

    50% {
        background-position: 100% 50%;
        opacity: 1;
    }
}

/* 悬停效果 - 保持透明 */
.cta-button:hover,
.nav-button:hover {
    background: var(--color-primary-darker);
}

.cta-button:hover::before,
.nav-button:hover::before {
    animation-duration: 2s;
    opacity: 0.7;
}

.cta-button:hover::after,
.nav-button:hover::after {
    opacity: 1;
}

/* 点击效果 */
.cta-button:active,
.nav-button:active {
    transform: translateY(1px) scale(0.98);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

/* Hero区域CTA按钮特殊样式 */
.hero-content .cta-button {
    font-size: 1.25rem;
    padding: var(--spacing-lg) var(--spacing-2xl);
    margin-top: var(--spacing-xl);
    letter-spacing: 0.5px;
    /* 稍微增强毛玻璃效果但保持透明 */
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.hero-content .cta-button::before {
    background: linear-gradient(45deg,
            rgba(124, 58, 237, 0.7),
            rgba(236, 72, 153, 0.7),
            rgba(59, 130, 246, 0.7),
            rgba(16, 185, 129, 0.7),
            rgba(245, 158, 11, 0.7),
            rgba(124, 58, 237, 0.7));
    animation-duration: 5s;
    opacity: 0.5;
}

.hero-content .cta-button:hover {
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(35px) saturate(200%);
    -webkit-backdrop-filter: blur(35px) saturate(200%);
}

/* CTA区域按钮特殊样式 */
.cta-section .cta-button {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg) var(--spacing-2xl);
    width: 100%;
    max-width: 300px;
}

/* 响应式设计 */
@media (max-width: 768px) {

    .cta-button,
    .nav-button {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 1rem;
        backdrop-filter: blur(15px) saturate(140%);
        -webkit-backdrop-filter: blur(15px) saturate(140%);
        background: rgba(255, 255, 255, 0.06);
    }

    .hero-content .cta-button {
        font-size: 1.125rem;
        padding: var(--spacing-md) var(--spacing-xl);
        backdrop-filter: blur(20px) saturate(160%);
        -webkit-backdrop-filter: blur(20px) saturate(160%);
        background: rgba(255, 255, 255, 0.1);
    }

    .cta-button::before,
    .nav-button::before {
        animation-duration: 5s;
        opacity: 0.3;
    }
}

/* 暗色主题适配 */
@media (prefers-color-scheme: dark) {

    .cta-button,
    .nav-button {
        background: rgba(0, 0, 0, 0.1);
        border-color: rgba(255, 255, 255, 0.1);
    }

    .cta-button:hover,
    .nav-button:hover {
        background: rgba(0, 0, 0, 0.15);
        border-color: rgba(255, 255, 255, 0.15);
    }

    .hero-content .cta-button {
        background: rgba(0, 0, 0, 0.12);
        border-color: rgba(255, 255, 255, 0.12);
    }

    .hero-content .cta-button:hover {
        background: rgba(0, 0, 0, 0.18);
    }
}

/* 调整装饰元素位置 */
.hero-decoration-1 {
    width: 300px;
    height: 300px;
    top: -100px;
    left: -100px;
    animation: float 8s ease-in-out infinite;
}

.hero-decoration-2 {
    width: 250px;
    height: 250px;
    bottom: -50px;
    right: 15%;
    animation: float 6s ease-in-out infinite 1s;
}

.hero-decoration-3 {
    width: 200px;
    height: 200px;
    top: 40%;
    right: -50px;
    animation: float 7s ease-in-out infinite 0.5s;
}

/* SVG镂空标题样式 */
/*
.hero-title-container {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto var(--spacing-lg) auto;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1.5s var(--ease-out) forwards 0.5s;
}

.hero-title-svg {
    width: 100%;
    height: auto;
    max-height: 120px;
    filter: drop-shadow(0 4px 20px rgba(124, 58, 237, 0.3));
}
*/

/* 纯透明镂空标题样式 */
.hero-title {
    font-size: 5.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-align: center;

    /* 完全透明字体，仅保留描边 */
    color: transparent;
    background: transparent;
    -webkit-text-stroke: 3px rgba(255, 255, 255, 0.9);
    text-stroke: 3px rgba(255, 255, 255, 0.9);

    /* 渐入动画 */
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1.5s var(--ease-out) forwards 0.5s;

    /* 去掉文字阴影，保持纯净的镂空效果 */
    text-shadow: none;
}



.hero-subtitle {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin: var(--spacing-md) 0;
    display: inline-block;
    overflow: hidden;
    white-space: nowrap;
    border-right: 2px solid var(--color-primary);
    width: 0;
    max-width: fit-content;
    min-height: 2em;
}

/* Typewriter-specific overrides: smoother sizing and caret-only animation */
#typewriterText {
    font-size: 1.625rem;           /* Desktop: 更醒目但不过分 */
    width: auto;                   /* 使用JS逐字，不再用宽度动画 */
    animation: cursor 0.75s step-end infinite; /* 保留光标闪烁 */
}

@media (max-width: 768px) {
    #typewriterText {
        font-size: 1.375rem;       /* Mobile: 更易读 */
    }
}

.hero-subtitle.typing {
    animation: typing 3s steps(40) forwards,
        cursor 0.75s step-end infinite;
}

.hero-subtitle.erasing {
    animation: erasing 1.5s steps(40) forwards,
        cursor 0.75s step-end infinite;
}

@keyframes typing {
    0% {
        width: 0
    }

    100% {
        width: 100%
    }
}

@keyframes erasing {
    0% {
        width: 100%
    }

    100% {
        width: 0
    }
}

@keyframes cursor {

    0%,
    50% {
        border-color: var(--color-primary)
    }

    51%,
    100% {
        border-color: transparent
    }
}

/* 装饰元素 */
.hero-decoration {
    position: absolute;
    border-radius: 50%;
    background: var(--color-primary);
    filter: blur(40px);
    opacity: 0.15;
    z-index: 1;
}

.hero-decoration-1 {
    width: 200px;
    height: 200px;
    top: -50px;
    left: -50px;
    animation: float 8s ease-in-out infinite;
}

.hero-decoration-2 {
    width: 150px;
    height: 150px;
    bottom: -30px;
    right: 10%;
    animation: float 6s ease-in-out infinite 1s;
}

.hero-decoration-3 {
    width: 100px;
    height: 100px;
    top: 30%;
    right: -20px;
    animation: float 7s ease-in-out infinite 0.5s;
}

/* 特性展示区样式 */
.features {
    margin: 0; /* 交由 .main-content > section 统一控制上下间距 */
}

.features h2 {
    font-size: 2.25rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

/* FAQ标题样式与其他板块一致 */
.faq-section {
    margin: 0; /* 交由 .main-content > section 统一控制上下间距 */
}

.faq-section h2 {
    font-size: 2.25rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

/* Unified vertical rhythm for all sections inside main content */
.main-content > section {
    margin: 0; /* 改为由 .main-content 的 grid gap 统一控制间距，避免外边距折叠 */
    /* 取消默认满屏最小高度，改为按需使用 .snap-section 控制 */
}

/* 工具类：仅对标记为 snap-section 的区块做接近满屏展示 */
.snap-section {
    min-height: calc(100vh - var(--navbar-height)); /* 与导航高度/scroll-margin-top 对齐 */
}

/* 工具类：内容较少时收紧留白 */
.section-compact {
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
}

/* 移动端可选择不做满屏，避免过度留白 */
@media (max-width: 768px) {
    .snap-section {
        min-height: auto;
    }
}

/* 用户评价（Voices）区块样式 */
.voices {
    margin: 0; /* 交由 .main-content 的 row-gap 统一控制模块间距 */
}

.voices h2 {
    font-size: 2.25rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

/* Voices - Stats emphasis and spacing */
.voices .stats-section {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-xl);
    background: linear-gradient(
        180deg,
        rgba(124, 58, 237, 0.06),
        rgba(59, 130, 246, 0.06)
    );
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
}

@media (min-width: 768px) {
    .voices .stats-section {
        margin: var(--spacing-2xl) 0;
        padding: calc(var(--spacing-xl) + 0.5rem);
    }
}

/* 覆盖通用 stats-grid 的外边距，交由 stats-section 控制 */
.voices .stats-grid {
    margin-top: 0;
    gap: var(--spacing-xl);
}

/* 强化数字视觉 */
.voices .stat-item h3 {
    font-size: 3rem;
    line-height: 1.05;
    color: var(--color-primary);
    text-shadow: 0 0 18px rgba(167, 139, 250, 0.28);
}

@media (max-width: 768px) {
    .voices .stat-item h3 {
        font-size: 2.25rem;
    }
}

/* 标签更清晰 */
.voices .stat-item p {
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    text-transform: none;
}

/* 轮播容器样式 */
.carousel-container {
    position: relative;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    overflow: visible;
    /* 让外层不裁剪，交给 viewport 控制 */
}

/* 新增：视口与轨道 */
.carousel-viewport {
    overflow: hidden;
    /* 仅裁剪可视范围，避免阴影/发光被外层裁剪 */
    width: 100%;
    position: relative;
}

.carousel-track {
    will-change: transform;
    transition: transform 0.5s ease;
}

/* 避免 feature-grid 自身横向滚动与滚动捕捉影响 transform 动画 */
.carousel-viewport .feature-grid {
    overflow: visible;
    scroll-snap-type: none;
}

/* 轮播控制按钮样式 */
.carousel-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: var(--spacing-lg);
    gap: var(--spacing-xl);
}

.carousel-control {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all var(--transition-normal) var(--ease-out);
}

.carousel-control:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

/* 轮播指示器样式 */
.carousel-indicators {
    display: flex;
    gap: var(--spacing-sm);
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all var(--transition-normal) var(--ease-out);
}

.indicator.active {
    background: var(--color-primary);
    transform: scale(1.2);
}

/* 修改为横排展示 - 增大卡片间距 */
.feature-grid {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    /* 改为auto允许横向滚动 */
    gap: var(--spacing-2xl);
    padding: var(--spacing-md) var(--spacing-md);
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    /* 增加移动端滚动体验 */
    transition: transform 0.5s ease;
    transform-style: preserve-3d;
}

/* 添加滚动条样式美化 */
.feature-grid::-webkit-scrollbar {
    height: 8px;
}

.feature-grid::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.feature-grid::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.feature-grid::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* 毛玻璃卡片样式 - 调整为3:4比例 */
.glass-card {
    flex: 0 0 300px;
    /* 改为flex-basis确保卡片大小一致 */
    min-height: 350px;
    /* 使用最小高度而不是固定高度 */
    display: flex;
    flex-direction: column;
    background-color: rgba(26, 27, 29, 0.7);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md), 0 0 15px rgba(167, 139, 250, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform var(--transition-normal) var(--ease-out),
        box-shadow var(--transition-normal) var(--ease-out);
    scroll-snap-align: start;
    position: relative;
    overflow: visible;
    /* 改为visible确保内容不被截断 */
}

/* 添加内部发光效果 - 确保与卡片圆角匹配 */
.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(167, 139, 250, 0.15), transparent);
    z-index: -1;
    animation: innerGlow 3s ease-in-out infinite alternate;
    border-radius: var(--radius-lg);
    /* 确保与卡片圆角匹配 */
}

/* 为每个卡片添加不同颜色 */
.glass-card:nth-child(1) {
    background-color: rgba(124, 58, 237, 0.2);
    /* 紫色 */
    box-shadow: var(--shadow-md), 0 0 20px rgba(124, 58, 237, 0.4);
}

.glass-card:nth-child(1)::before {
    background: linear-gradient(45deg, transparent, rgba(124, 58, 237, 0.15), transparent);
}

.glass-card:nth-child(1)::after {
    background: linear-gradient(45deg, rgba(124, 58, 237, 0.6), transparent, rgba(124, 58, 237, 0.6));
}

.glass-card:nth-child(2) {
    background-color: rgba(59, 130, 246, 0.2);
    /* 蓝色 */
    box-shadow: var(--shadow-md), 0 0 20px rgba(59, 130, 246, 0.4);
}

.glass-card:nth-child(2)::before {
    background: linear-gradient(45deg, transparent, rgba(59, 130, 246, 0.15), transparent);
}

.glass-card:nth-child(2)::after {
    background: linear-gradient(45deg, rgba(59, 130, 246, 0.6), transparent, rgba(59, 130, 246, 0.6));
}

.glass-card:nth-child(3) {
    background-color: rgba(16, 185, 129, 0.2);
    /* 绿色 */
    box-shadow: var(--shadow-md), 0 0 20px rgba(16, 185, 129, 0.4);
}

.glass-card:nth-child(3)::before {
    background: linear-gradient(45deg, transparent, rgba(16, 185, 129, 0.15), transparent);
}

.glass-card:nth-child(3)::after {
    background: linear-gradient(45deg, rgba(16, 185, 129, 0.6), transparent, rgba(16, 185, 129, 0.6));
}

.glass-card:nth-child(4) {
    background-color: rgba(245, 158, 11, 0.2);
    /* 橙色 */
    box-shadow: var(--shadow-md), 0 0 20px rgba(245, 158, 11, 0.4);
}

.glass-card:nth-child(4)::before {
    background: linear-gradient(45deg, transparent, rgba(245, 158, 11, 0.15), transparent);
}

.glass-card:nth-child(4)::after {
    background: linear-gradient(45deg, rgba(245, 158, 11, 0.6), transparent, rgba(245, 158, 11, 0.6));
}

.glass-card:nth-child(5) {
    background-color: rgba(236, 72, 153, 0.2);
    /* 粉色 */
    box-shadow: var(--shadow-md), 0 0 20px rgba(236, 72, 153, 0.4);
}

.glass-card:nth-child(5)::before {
    background: linear-gradient(45deg, transparent, rgba(236, 72, 153, 0.15), transparent);
}

.glass-card:nth-child(5)::after {
    background: linear-gradient(45deg, rgba(236, 72, 153, 0.6), transparent, rgba(236, 72, 153, 0.6));
}

.glass-card:nth-child(6) {
    background-color: rgba(6, 182, 212, 0.2);
    /* 青色 */
    box-shadow: var(--shadow-md), 0 0 20px rgba(6, 182, 212, 0.4);
}

.glass-card:nth-child(6)::before {
    background: linear-gradient(45deg, transparent, rgba(6, 182, 212, 0.15), transparent);
}

.glass-card:nth-child(6)::after {
    background: linear-gradient(45deg, rgba(6, 182, 212, 0.6), transparent, rgba(6, 182, 212, 0.6));
}

.glass-card:hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    box-shadow: var(--shadow-lg), 0 0 20px rgba(167, 139, 250, 0.5);
    border-color: rgba(255, 255, 255, 0.3);
}

/* 主题色基于类名，覆盖 nth-child 的限制，保证克隆后仍有颜色 */
.glass-card.glass-card-purple {
    background:
        radial-gradient(120% 140% at 0% 0%, rgba(168, 85, 247, 0.26) 0%, rgba(124, 58, 237, 0.18) 40%, rgba(124, 58, 237, 0.08) 100%),
        rgba(26, 27, 29, 0.70);
    box-shadow: var(--shadow-md), 0 12px 32px rgba(124, 58, 237, 0.50), inset 0 0 0 1px rgba(255, 255, 255, 0.06);
    border-color: rgba(168, 85, 247, 0.45);
}

.glass-card.glass-card-purple::before {
    background: linear-gradient(135deg, transparent, rgba(168, 85, 247, 0.30), transparent);
}

.glass-card.glass-card-blue {
    background:
        radial-gradient(120% 140% at 100% 0%, rgba(96, 165, 250, 0.26) 0%, rgba(59, 130, 246, 0.18) 40%, rgba(59, 130, 246, 0.08) 100%),
        rgba(26, 27, 29, 0.70);
    box-shadow: var(--shadow-md), 0 12px 32px rgba(59, 130, 246, 0.50), inset 0 0 0 1px rgba(255, 255, 255, 0.06);
    border-color: rgba(96, 165, 250, 0.45);
}

.glass-card.glass-card-blue::before {
    background: linear-gradient(135deg, transparent, rgba(96, 165, 250, 0.30), transparent);
}

.glass-card.glass-card-green {
    background:
        radial-gradient(120% 140% at 0% 100%, rgba(52, 211, 153, 0.26) 0%, rgba(16, 185, 129, 0.18) 40%, rgba(16, 185, 129, 0.08) 100%),
        rgba(26, 27, 29, 0.70);
    box-shadow: var(--shadow-md), 0 12px 32px rgba(16, 185, 129, 0.50), inset 0 0 0 1px rgba(255, 255, 255, 0.06);
    border-color: rgba(52, 211, 153, 0.45);
}

.glass-card.glass-card-green::before {
    background: linear-gradient(135deg, transparent, rgba(52, 211, 153, 0.30), transparent);
}

.glass-card.glass-card-orange {
    background:
        radial-gradient(120% 140% at 100% 100%, rgba(251, 191, 36, 0.26) 0%, rgba(245, 158, 11, 0.18) 40%, rgba(245, 158, 11, 0.08) 100%),
        rgba(26, 27, 29, 0.70);
    box-shadow: var(--shadow-md), 0 12px 32px rgba(245, 158, 11, 0.50), inset 0 0 0 1px rgba(255, 255, 255, 0.06);
    border-color: rgba(251, 191, 36, 0.45);
}

.glass-card.glass-card-orange::before {
    background: linear-gradient(135deg, transparent, rgba(251, 191, 36, 0.30), transparent);
}

.glass-card.glass-card-pink {
    background:
        radial-gradient(120% 140% at 0% 50%, rgba(244, 114, 182, 0.26) 0%, rgba(236, 72, 153, 0.18) 40%, rgba(236, 72, 153, 0.08) 100%),
        rgba(26, 27, 29, 0.70);
    box-shadow: var(--shadow-md), 0 12px 32px rgba(236, 72, 153, 0.50), inset 0 0 0 1px rgba(255, 255, 255, 0.06);
    border-color: rgba(244, 114, 182, 0.45);
}

.glass-card.glass-card-pink::before {
    background: linear-gradient(135deg, transparent, rgba(244, 114, 182, 0.30), transparent);
}

.glass-card.glass-card-cyan {
    background:
        radial-gradient(120% 140% at 100% 50%, rgba(34, 211, 238, 0.26) 0%, rgba(6, 182, 212, 0.18) 40%, rgba(6, 182, 212, 0.08) 100%),
        rgba(26, 27, 29, 0.70);
    box-shadow: var(--shadow-md), 0 12px 32px rgba(6, 182, 212, 0.50), inset 0 0 0 1px rgba(255, 255, 255, 0.06);
    border-color: rgba(34, 211, 238, 0.45);
}

.glass-card.glass-card-cyan::before {
    background: linear-gradient(135deg, transparent, rgba(34, 211, 238, 0.30), transparent);
}

/* 调整卡片内容布局 - 修改图标样式 */
.glass-card-icon {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 60px;
    height: 60px;
    background-color: rgba(13, 14, 15, 0.5);
    border-radius: var(--radius-lg);
    /* 增大圆角 */
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
    position: relative;
    z-index: 1;
    box-shadow: 0 0 15px rgba(167, 139, 250, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.3);
    /* 添加白色描边 */
}

.glass-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.glass-card-description {
    color: var(--text-secondary);
    line-height: 1.75;
}

/* 产品优势样式 */
.advantages {
    margin: 0; /* 交由 .main-content > section 统一控制上下间距 */
}

.advantages h2 {
    font-size: 2.25rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.header-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-left: 0;
    list-style: none;
}

.header-features li {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    background-color: var(--bg-darker);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-primary);
    transition: transform 0.2s ease-in-out,
        box-shadow 0.2s ease-in-out,
        background-color 0.2s ease-in-out;
}

.header-features li:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background-color: var(--bg-dark);
}

/* 动画 */
@keyframes gradientAnimation {
    0% {
        background-position: 0% 0%;
        filter: hue-rotate(0deg) brightness(1);
    }

    50% {
        background-position: 100% 100%;
        filter: hue-rotate(10deg) brightness(1.1);
    }

    100% {
        background-position: 0% 0%;
        filter: hue-rotate(0deg) brightness(1);
    }
}

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

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(180deg, rgba(20, 22, 25, 0.55), rgba(20, 22, 25, 0.35));
    backdrop-filter: blur(14px) saturate(1.2) contrast(1.02);
    -webkit-backdrop-filter: blur(14px) saturate(1.2) contrast(1.02);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}
/* 玻璃高光叠层（微弱顶部高光） */
.navbar::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0));
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    padding: 0 var(--spacing-xl);
}

.navbar-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: var(--font-weight-semibold);
}

.logo-icon {
    font-size: 1.5rem;
    margin-right: var(--spacing-xs);
}

.logo-text {
    font-size: var(--font-size-lg);
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

/* 在现有的导航样式中添加以下内容 */

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

/* 降低滚动链与橡皮筋影响，提升翻屏稳定性 */
html, body {
    overscroll-behavior-y: none;
}

/* 导航链接选中状态 */
.nav-link {
    position: relative;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-md);
    transition: color var(--transition-normal) var(--ease-out);
    padding: var(--spacing-xs) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-normal) var(--ease-out);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

/* 移动端样式调整 */
@media (max-width: 768px) {
    .nav-link::after {
        bottom: 0;
    }

    .navbar-menu.active {
        display: flex;
        animation: slideDown 0.3s var(--ease-out);
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }

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

.nav-button {
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-primary);
    color: var(--text-on-primary);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-normal) var(--ease-out);
}

.nav-button:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
}

.navbar-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.toggle-line {
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition-normal) var(--ease-out);
}

/* 为主内容添加上边距，避免被固定导航栏遮挡 */
.main-content {
    padding-top: 90px;
    display: grid;                 /* 统一由栅格行间距控制模块间距 */
    row-gap: var(--spacing-2xl);   /* 统一的上下间距 */
}

@media (min-width: 1024px) {
    .main-content {
        row-gap: calc(var(--spacing-2xl) + 0.5rem); /* 桌面端稍加间距，更舒展 */
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: linear-gradient(180deg, rgba(20, 22, 25, 0.60), rgba(20, 22, 25, 0.40));
        backdrop-filter: blur(14px) saturate(1.05);
        -webkit-backdrop-filter: blur(14px) saturate(1.05);
        flex-direction: column;
        padding: var(--spacing-md);
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        box-shadow: 0 12px 24px rgba(0, 0, 0, 0.25);
    }

    .navbar-menu.active {
        display: flex;
    }

    .navbar-toggle {
        display: flex;
    }

    .nav-link {
        padding: var(--spacing-md) 0;
    }

    .nav-button {
        width: 100%;
        text-align: center;
        margin-top: var(--spacing-sm);
    }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero-banner {
        height: 400px;
    }

    .hero-title {
        font-size: 4rem;
        -webkit-text-stroke: 2px rgba(255, 255, 255, 0.9);
    }

    .hero-title-svg {
        max-height: 80px;
    }

    .hero-title-container svg text {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 1.25rem;
        overflow: hidden;
        white-space: nowrap;
        border-right: 2px solid var(--color-primary);
        width: 0;
        animation: typing 3s steps(40) forwards,
            cursor .75s step-end infinite;
    }

    @keyframes typing {
        from {
            width: 0
        }

        to {
            width: 100%
        }
    }

    @keyframes cursor {

        from,
        to {
            border-color: transparent
        }

        50% {
            border-color: var(--color-primary)
        }
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 3rem;
        -webkit-text-stroke: 1.5px rgba(255, 255, 255, 0.9);
    }

    .hero-title-svg {
        max-height: 60px;
    }

    .hero-title-container svg text {
        font-size: 24px;
    }
}

/* CTA区域样式 */
.cta-section {
    width: 100%;
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg,
        var(--color-primary-darkest) 0%,
        var(--color-neutral-darker) 50%,
        var(--color-primary-darkest) 100%);
    position: relative;
    overflow: hidden;
}

/* 添加动态渐变背景 */
.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg,
        rgba(124, 58, 237, 0.1),
        rgba(59, 130, 246, 0.1),
        rgba(16, 185, 129, 0.1));
    background-size: 200% 200%;
    animation: gradientMove 15s ease infinite;
    z-index: 1;
}

.cta-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    text-align: center;
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.cta-description {
    color: var(--text-secondary);
    margin: var(--spacing-md) 0 var(--spacing-xl);
    font-size: 1.125rem;
}

.cta-action {
    display: flex;
    justify-content: center;
}

/* CTA区域按钮特殊样式 */
.cta-section .cta-button {
    padding: var(--spacing-lg) var(--spacing-2xl);
    width: auto;
    min-width: 200px;
    max-width: none;
}

.button-text {
    position: relative;
}

.button-arrow {
    font-size: 1.25rem;
    transition: transform 0.3s ease;
}

.cta-button:hover {
    background: var(--color-primary-darker);
    transform: translateY(-2px);
}

.cta-button:hover .button-arrow {
    transform: translateX(4px);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .feature-grid {
        padding-bottom: var(--spacing-lg);
    }

    .glass-card {
        width: 240px;
        height: 320px;
    }

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

    .container {
        padding: var(--spacing-md);
    }

    .cta-section {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .cta-section h2 {
        font-size: 2rem;
    }

    .cta-description {
        font-size: 1.125rem;
    }

    .cta-button {
        width: 100%;
        justify-content: center;
    }
}

/* 声浪动画样式 */
.sound-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40%;
    overflow: hidden;
    line-height: 0;
    transform: rotate(180deg);
    z-index: 1;
}

.sound-wave svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 100%;
}

.wave {
    animation: waveAnimation 25s linear infinite;
    animation-delay: 0s;
    transform-origin: 50% 50%;
}

.wave2 {
    animation-duration: 20s;
    animation-delay: -5s;
}

.wave3 {
    animation-duration: 15s;
    animation-delay: -2s;
}

@keyframes waveAnimation {
    0% {
        transform: translateX(0) translateZ(0) scaleY(1);
    }

    50% {
        transform: translateX(-25%) translateZ(0) scaleY(0.8);
    }

    100% {
        transform: translateX(-50%) translateZ(0) scaleY(1);
    }
}

/* 添加内发光动画 */
@keyframes innerGlow {
    0% {
        opacity: 0.1;
    }

    100% {
        opacity: 0.3;
    }
}

/* 调整hero内容的z-index确保在波浪上层 */
.hero-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    padding: var(--spacing-xl);
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
}

/* 声纹动画样式 */
.voice-pattern {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 40%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 1;
    padding: 0 2rem;
}

/* 声纹背景动画样式增强 */
.voice-pattern-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1;
    opacity: 0.2;
    pointer-events: none;
    overflow: hidden;
    filter: blur(1px);
}

.pattern-group {
    display: flex;
    gap: 2rem;
    transform: rotate(30deg) scale(1.8);
}

.pattern-group .bar {
    width: 4px;
    height: 120px;
    background: linear-gradient(180deg,
            var(--color-primary-dark),
            var(--color-primary),
            var(--color-primary-light));
    border-radius: 2px;
    animation: voicePatternAnimation 2s ease-in-out infinite;
    box-shadow: 0 0 20px var(--color-primary-dark),
        0 0 40px var(--color-primary);
    position: relative;
}

.pattern-group .bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: inherit;
    filter: blur(8px);
    opacity: 0.7;
}

.pattern-group:nth-child(2) {
    transform: rotate(-30deg) scale(1.8);
}

.pattern-group:nth-child(3) {
    transform: rotate(0deg) scale(1.8);
}

.pattern-group .bar:nth-child(2n) {
    animation-delay: 0.3s;
    height: 180px;
}

.pattern-group .bar:nth-child(3n) {
    animation-delay: 0.5s;
    height: 150px;
}

.pattern-group .bar:nth-child(4n) {
    animation-delay: 0.7s;
    height: 220px;
}

/* 页脚样式 */
.footer {
    background: linear-gradient(to bottom, var(--bg-darker), var(--bg-darkest));
    padding-top: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-neutral-light);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-xl);
    padding-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.footer-logo i {
    margin-right: var(--spacing-sm);
    color: var(--color-primary);
}

.footer-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-md);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-normal) var(--ease-out);
}

.footer-links a:hover {
    color: var(--color-primary);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-neutral);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-normal) var(--ease-out);
}

.social-link:hover {
    background: var(--color-primary);
    transform: translateY(-2px);
}

.footer-bottom {
    background: var(--bg-darkest);
    padding: var(--spacing-lg) 0;
    text-align: center;
    border-top: 1px solid var(--color-neutral-light);
}

.footer-bottom p {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-2xl);
    }

    .footer-logo {
        justify-content: center;
    }

    .social-links {
        justify-content: center;
    }
}

@keyframes voicePatternAnimation {
    0% {
        transform: scaleY(0.3);
        opacity: 0.5;
        filter: hue-rotate(0deg);
    }

    50% {
        transform: scaleY(1);
        opacity: 1;
        filter: hue-rotate(180deg);
    }

    100% {
        transform: scaleY(0.3);
        opacity: 0.5;
        filter: hue-rotate(360deg);
    }
}

/* How It Works 区块样式 */
.how-it-works {
    padding: 0 var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.how-it-works h2 {
    margin-bottom: var(--spacing-xl);
}

/* 教程视频容器 */
.how-video {
    position: relative;
    max-width: 960px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: rgba(255, 255, 255, 0.04);
}

/* 16:9 占位，避免视频加载前布局抖动 */
.how-video::before {
    content: '';
    display: block;
    padding-top: 56.25%;
}

.how-video-player {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Global Background Effects (fixed, behind all content) */
.global-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

/* 柔和的发光渐变层，增强层次感 */
.global-gradient {
    position: absolute;
    inset: -20%;
    background:
        radial-gradient(60% 60% at 20% 20%, rgba(124, 58, 237, 0.25), transparent 60%),
        radial-gradient(50% 50% at 80% 30%, rgba(59, 130, 246, 0.20), transparent 60%),
        radial-gradient(55% 55% at 50% 80%, rgba(16, 185, 129, 0.15), transparent 60%),
        linear-gradient(to bottom, rgba(0,0,0,0.2), rgba(0,0,0,0.35));
    filter: blur(20px) saturate(1.1);
}

/* 全局声纹动画（透明度更低，避免喧宾夺主） */
.global-voice-bg {
    position: absolute;
    inset: 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    opacity: 0.12;         /* 全局更轻，避免遮挡内容 */
    filter: blur(2px);
}

/* 小屏减少视觉强度，保证可读性 */
@media (max-width: 768px) {
    .global-gradient { filter: blur(24px) saturate(1.0); }
    .global-voice-bg { opacity: 0.10; }
}