:root {
    --primary-color: #1a90ff;
    --secondary-color: #096dd9;
    --background-color: #000000;
    --text-color: #ffffff;
    --light-gray: #1f1f1f;
    --border-color: #333333;
    --gradient-text: linear-gradient(26deg, #ffd89b, #19547b);
    --primary-hover: #4096ff;
    
    /* 基础字体大小 - 响应式缩放 */
    font-size: 16px;
}

/* 亮色主题变量 */
:root[data-theme="light"] {
    --primary-color: #3478af;
    --secondary-color: #1e4c70;
    --background-color: #ffffff;
    --text-color: #22313f;
    --light-gray: #f5f5f5;
    --border-color: #e0e0e0;
    --gradient-text: linear-gradient(26deg, #000000, #1e4c70, #3478af);
    --primary-hover: #1e4c70;
}

/* 导航栏主题切换按钮 */
.theme-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    transition: all 0.3s ease;
    background-color: rgba(255, 255, 255, 0.1);
}

.theme-toggle-btn i {
    font-size: 1rem;
    transition: transform 0.3s ease;
}

.theme-toggle-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.theme-toggle-btn:hover i {
    transform: rotate(30deg);
}

:root[data-theme="light"] .theme-toggle-btn {
    background: linear-gradient(to right, rgba(0,0,0,0.05), rgba(30,76,112,0.1));
}

:root[data-theme="light"] .theme-toggle-btn:hover {
    background: linear-gradient(to right, rgba(0,0,0,0.1), rgba(30,76,112,0.2));
}

/* 亮色主题下特定元素调整 */
:root[data-theme="light"] .main-nav {
    background-color: rgba(255,255,255,0.7);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

:root[data-theme="light"] .main-nav:hover {
    background-color: rgba(255,255,255,0.9);
}

:root[data-theme="light"] .main-nav a {
    color: var(--text-color);
}

:root[data-theme="light"] .feature-card {
    background-color: rgba(0,0,0,0.03);
    border: 1px solid var(--border-color);
}

:root[data-theme="light"] .feature-card:hover {
    box-shadow: 0 10px 30px rgba(30, 60, 114, 0.15);
}

:root[data-theme="light"] .title {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

:root[data-theme="light"] .title-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

:root[data-theme="light"] .display-1 {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

:root[data-theme="light"] .subtitle {
    color: #22313f;
    opacity: 0.8;
}

:root[data-theme="light"] .download-section {
    background: rgba(0,0,0,0.05);
    backdrop-filter: blur(5px);
}

:root[data-theme="light"] .typed-text,
:root[data-theme="light"] .cursor {
    color: rgba(0, 0, 0, 0.7);
}

:root[data-theme="light"] .noise {
    background-color: rgba(0,0,0,0.03);
    border: 1px solid var(--border-color);
}

:root[data-theme="light"] .noise:hover {
    background-color: rgba(0,0,0,0.05);
}

:root[data-theme="light"] .noise p {
    color: rgba(0, 0, 0, 0.7);
}

:root[data-theme="light"] .text-light {
    color: var(--text-color) !important;
}

:root[data-theme="light"] .footer-copyright {
    background-color: var(--light-gray);
}

:root[data-theme="light"] .footer-copyright p,
:root[data-theme="light"] .footer-copyright a {
    color: rgba(0, 0, 0, 0.7);
}

:root[data-theme="light"] .domain a,
:root[data-theme="light"] .bookmark-tip {
    color: #22313f;
    opacity: 0.8;
}

:root[data-theme="light"] .domain a:hover {
    color: var(--primary-color);
    opacity: 1;
}

:root[data-theme="light"] .copy-hint {
    color: var(--primary-color);
}

:root[data-theme="light"] .header {
    background-color: rgba(255,255,255,0.7);
    backdrop-filter: blur(10px) saturate(180%);
    -webkit-backdrop-filter: blur(10px) saturate(180%);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

/* 亮色主题下导航菜单样式 */
:root[data-theme="light"] .nav a {
    color: var(--text-color);
}

:root[data-theme="light"] .nav a:not(.register):not(.theme-toggle-btn)::after {
    background-color: var(--primary-color);
}

:root[data-theme="light"] .nav a:not(.register):not(.theme-toggle-btn):hover {
    color: var(--primary-color);
    background: rgba(30, 60, 114, 0.05);
}

:root[data-theme="light"] .nav .register {
    color: white;
    background: var(--primary-color);
    background: linear-gradient(to right, #1e4c70, #3478af);
}

:root[data-theme="light"] .nav .register:hover {
    background: linear-gradient(to right, #153650, #2a608c);
}

:root[data-theme="light"] .menu-toggle span {
    background-color: var(--text-color);
}

/* 按钮样式调整 */
:root[data-theme="light"] .btn {
    background: var(--primary-color);
    background: linear-gradient(to right, #1e4c70, #3478af);
    color: white;
}

:root[data-theme="light"] .btn:hover {
    background: linear-gradient(to right, #153650, #2a608c);
}

:root[data-theme="light"] .btn.btn-secondary {
    background: rgba(0,0,0,0.05);
    color: var(--text-color);
}

:root[data-theme="light"] .btn.btn-secondary:hover {
    background: rgba(0,0,0,0.1);
}

/* 下载链接样式调整 */
:root[data-theme="light"] .download-links a {
    color: var(--text-color);
    border: 1px solid rgba(0,0,0,0.1);
}

:root[data-theme="light"] .download-links a:hover {
    background: rgba(0,0,0,0.05);
}

@media (max-width: 992px) {
    :root {
        font-size: 15px;
    }
}

@media (max-width: 768px) {
    :root {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 13px;
    }
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

/* 导航栏样式 */
.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background-color: rgba(0,0,0,0.7);
    backdrop-filter: blur(10px) saturate(180%);
    -webkit-backdrop-filter: blur(10px) saturate(180%);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: background-color 0.3s ease;
}

.main-nav:hover {
    background-color: rgba(0,0,0,0.8);
}

.logo {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-color);
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.main-nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

.main-nav a:hover {
    color: var(--primary-color);
}

.register-btn {
    background-color: var(--primary-color);
    color: white !important;
    padding: 0.5rem 1.5rem;
    border-radius: 0.5rem;
    transition: all 0.3s;
}

.register-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

/* 英雄区域样式 */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 50px 5% 0;
    position: relative;
}

.typewriter {
    margin-bottom: 0;
    margin-top: 50px;
    height: 35px;
    color: var(--text-muted);
}

.typed-text {
    font-size: 32px;
    color: var(--text-muted);
    font-weight: 500;
    opacity: 0.8;
}

.cursor {
    font-size: 28px;
    color: var(--text-muted);
    font-weight: 500;
    animation: blink 1s infinite;
    opacity: 0.8;
}

.title {
    font-size: 6rem;
    font-weight: 800;
    margin: 2rem 0;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.subtitle {
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    font-weight: 500;
}

.download-section {
    margin-top: 3rem;
    background: rgba(255,255,255,0.1);
    padding: 2rem;
    border-radius: 1rem;
    backdrop-filter: blur(5px);
}

.download-section h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
}

.download-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.download-links a {
    color: var(--text-color);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 4px;
    transition: all 0.3s;
}

.download-links a:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-2px);
}

/* 特性区域样式 */
.features {
    background-color: var(--light-gray);
    padding: 6rem 5%;
}

.features h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    background: linear-gradient(to right, #fff, #666);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    padding: 2rem;
    background-color: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(26,144,255,0.1);
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* 价格区域样式 */
.pricing {
    background-color: var(--background-color);
    padding: 6rem 5%;
}

.pricing h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    background: linear-gradient(to right, #fff, #666);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.price-card {
    background-color: rgba(255,255,255,0.05);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.price-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(26,144,255,0.1);
}

.price-card.featured {
    border: 1px solid var(--primary-color);
    background-color: rgba(30, 60, 114, 0.05);
    transform: scale(1.05);
}

.price-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.price {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.price span {
    font-size: 1rem;
    color: #888;
}

.price-card ul {
    list-style: none;
    margin-bottom: 2rem;
}

.price-card li {
    margin-bottom: 0.5rem;
    color: #888;
}

.buy-btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 0.5rem;
    transition: all 0.3s;
}

.buy-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

/* 运营商logo区域 */
.carriers {
    padding: 2rem 0;
    background-color: var(--background-color);
    width: 100%;
    overflow: hidden;
}

.owl-carousel {
    display: block;
    width: 100%;
    -webkit-tap-highlight-color: transparent;
    position: relative;
    z-index: 1;
}

.owl-carousel.no-pb .owl-stage-outer {
    padding-bottom: 0;
}

.owl-carousel .owl-stage {
    position: relative;
    -ms-touch-action: pan-Y;
    touch-action: manipulation;
    -moz-backface-visibility: hidden;
    display: flex;
    align-items: center;
}

.owl-carousel .owl-item {
    position: relative;
    float: left;
    -webkit-backface-visibility: hidden;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    display: flex;
    justify-content: center;
    align-items: center;
}

.owl-carousel .item {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.owl-carousel .clients-logo {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 130px;
    height: 31px;
}

.owl-carousel .clients-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: brightness(0.5);
    transition: all 0.3s ease;
}

.owl-carousel .clients-logo:hover img {
    filter: brightness(1);
}

/* 亮色主题下运营商logo调整 - 使用深色高亮 */
:root[data-theme="light"] .owl-carousel .clients-logo img {
    filter: brightness(0.7);
    transition: all 0.3s ease;
}

:root[data-theme="light"] .owl-carousel .clients-logo:hover img {
    filter: brightness(0.2); /* 使用黑色/深色高亮，与白色主题形成对比 */
}

/* 移除之前的复杂效果 */
:root[data-theme="light"] .owl-carousel .clients-logo::before,
:root[data-theme="light"] .owl-carousel .clients-logo::after {
    display: none;
}

@media (max-width: 768px) {
    .carriers {
        padding: 1.5rem 0;
    }
    
    .owl-carousel .clients-logo {
        width: 100px;
        height: 24px;
    }
    
    .typed-text, .cursor {
        font-size: 24px;
    }
    
    .typewriter {
        height: 35px;
        margin-top: 0;
    }
}

/* 页脚样式 */
footer {
    background-color: var(--background-color);
    color: #888;
    padding: 2rem 5%;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-nav {
        flex-direction: column;
        padding: 1rem;
        background-color: rgba(0,0,0,0.95);
    }

    .main-nav ul {
        flex-direction: column;
        gap: 1rem;
        margin-top: 1rem;
        width: 100%;
        text-align: center;
    }

    .hero {
        padding-top: 4rem;
    }

    .main-title {
        font-size: 2.5em;
    }

    .sub-title {
        font-size: 1.8em;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 1rem;
    }

    .price-card.featured {
        transform: none;
    }

    .carrier-logos {
        gap: 2rem;
    }

    .carrier-logos img {
        height: 30px;
    }

    .title {
        font-size: 3.5rem;
    }
    
    .subtitle {
        font-size: 1.5rem;
    }
    
    .typed-text, .cursor {
        font-size: 20px;
    }

    .display-1 {
        font-size: 3.5rem;
    }

    .domain, .bookmark-tip {
        font-size: 18px;
    }

    .bookmark-tip {
        margin-bottom: 25px;
    }
}

/* 添加按钮点击效果 */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:active::after {
    width: 300px;
    height: 300px;
}

/* 滚动动画 */
.animate-ready {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* Toast样式 */
.toast {
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    backdrop-filter: blur(10px);
}

/* 进度条动画 */
.page-progress {
    box-shadow: 0 0 10px rgba(26,144,255,0.3);
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(0.625rem);
    -webkit-backdrop-filter: blur(0.625rem);
}

.header-inner {
    max-width: 75rem;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    width: 11.25rem;
    height: 2.7rem;
}

.title {
    font-size: 3.5rem;
    font-weight: bold;
    margin: 2rem 0;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
}

section {
    padding: 5rem 0;
}

/* 移动端适配 - 优化 */
@media (max-width: 768px) {
    /* 调整字体大小 */
    body {
        font-size: 0.875rem;
    }
    
    /* 顶部导航栏横向布局 */
    .header-inner {
        padding: 0.8rem 1rem;
    }
    
    .nav {
        position: fixed;
        top: 4.375rem;
        left: 0;
        right: 0;
        flex-direction: row;
        justify-content: center;
        align-items: center;
        background: rgba(0, 0, 0, 0.95);
        padding: 0.75rem 0.625rem;
        gap: 0.625rem;
        flex-wrap: wrap;
        z-index: 1000;
        display: none; /* 初始状态为隐藏 */
    }
    
    .nav.active {
        display: flex; /* 激活时显示 */
    }
    
    .nav a {
        width: auto;
        font-size: 0.875rem;
        text-align: center;
        padding: 0.5rem 0.875rem;
    }
    
    .nav .register {
        width: auto;
        margin-top: 0;
    }
    
    .menu-toggle {
        display: flex;
        margin-right: 0.5rem;
        z-index: 1010;
    }
    
    /* 标题和字体大小调整 */
    .title {
        font-size: 2.2rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    .display-1 {
        font-size: 2.8rem;
        line-height: 1.3;
        margin-bottom: 0.9375rem;
    }
    
    .domain, .bookmark-tip {
        font-size: 0.875rem;
        line-height: 1.5;
    }
    
    .bookmark-tip {
        margin-bottom: 1.25rem;
    }
    
    /* 按钮样式调整 */
    .buttons {
        gap: 0.75rem;
        flex-direction: row;
        justify-content: center;
    }
    
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
    
    /* 下载链接样式调整 */
    .download-links {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .download-links a {
        padding: 0.375rem 0.75rem;
        font-size: 0.8125rem;
        margin: 0.25rem;
    }
    
    /* 标题文字调整 */
    .title-text {
        font-size: 1.8rem;
    }
    
    /* 功能区块调整 */
    .noise {
        padding: 1.5rem;
    }
    
    .noise p {
        font-size: 0.8125rem;
    }
    
    .text-light {
        font-size: 1.1rem;
    }
}

/* 小屏幕手机适配 */
@media (max-width: 480px) {
    .display-1 {
        font-size: 2.3rem;
    }
    
    .nav a {
        padding: 6px 10px;
        font-size: 13px;
    }
    
    .nav .register {
        padding: 6px 14px;
    }
    
    .buttons {
        flex-direction: column;
    }
    
    .title-text {
        font-size: 1.5rem;
    }
}

.display-1 {
    font-size: 6rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
    margin-bottom: 1.25rem;
    letter-spacing: 0.125rem;
}

.domain, .bookmark-tip {
    color: #8090b5;
    line-height: 1.8;
    font-size: 18px;
    margin-bottom: 15px;
}

.bookmark-tip {
    margin-bottom: 30px;
}

.buttons {
    margin-top: 0.625rem;
    display: flex;
    gap: 1.25rem;
    margin-bottom: 2.5rem;
}

.nav {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.nav a:not(.register)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav a:not(.register):hover {
    color: var(--primary-color);
    background: rgba(26, 144, 255, 0.05);
}

.nav a:not(.register):hover::after {
    width: 80%;
}

.nav .register {
    background: var(--primary-color);
    color: white !important;
    padding: 8px 24px;
    border-radius: 6px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.nav .register:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(26, 144, 255, 0.3);
}

.nav .register:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(26, 144, 255, 0.2);
}

.nav .register::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.nav .register:hover::before {
    transform: translateX(0);
}

@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: 15px;
        padding: 20px;
    }

    .nav a {
        width: 100%;
        text-align: center;
        padding: 12px 20px;
    }

    .nav .register {
        width: 100%;
        margin-top: 10px;
    }
    
    /* 移动端下主题切换按钮样式 */
    .theme-toggle-btn {
        width: 100%;
        height: auto;
        border-radius: 6px;
        padding: 12px 20px;
        margin-top: 10px;
    }
    
    .theme-toggle-btn i {
        margin-right: 5px;
    }
    
    .theme-toggle-btn::after {
        content: "切换主题";
        margin-left: 5px;
    }
}

.pt-0 {
    padding-top: 0 !important;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}

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

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

.col-12 {
    flex: 0 0 100%;
    max-width: 100%;
    padding: 0 15px;
}

.col-md-12 {
    flex: 0 0 100%;
    max-width: 100%;
}

.col-lg-8 {
    flex: 0 0 66.666667%;
    max-width: 66.666667%;
}

.mb-8 {
    margin-bottom: 4rem;
}

.mb-lg-0 {
    margin-bottom: 0;
}

.slogan {
    margin-top: 3rem;
}

.title-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.mt-4 {
    margin-top: 2rem;
}

.mt-1 {
    margin-top: 0.5rem;
}

.font-w-6 {
    font-weight: 600;
}

.col-lg-4 {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
    padding: 0 15px;
}

.col-md-6 {
    flex: 0 0 50%;
    max-width: 50%;
}

.align-items-center {
    align-items: center;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

.text-light {
    color: var(--text-color) !important;
    font-size: 1.25rem;
}

.mb-0 {
    margin-bottom: 0 !important;
}

.mt-6 {
    margin-top: 3rem;
}

.mt-md-0 {
    margin-top: 0;
}

.noise {
    position: relative;
    padding: 2rem;
    height: 100%;
    border-radius: 1rem;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.noise:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-5px);
}

.noise p {
    color: #8090b5;
    line-height: 1.6;
}

@media (max-width: 992px) {
    .row.align-items-end {
        flex-wrap: wrap;
    }
    
    .col-lg-4 {
        flex: 0 0 calc(100% - 30px);
        max-width: calc(100% - 30px);
        margin: 15px;
    }
    
    .mt-6, .mt-md-0 {
        margin-top: 0 !important;
    }
}

@media (max-width: 768px) {
    .col-md-6 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .mt-6 {
        margin-top: 2rem;
    }
    
    .mb-8 {
        margin-bottom: 2rem;
    }
}

.footer-copyright {
    background-color: var(--background-color);
    padding: 1rem 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-copyright p {
    color: rgba(255, 255, 255, 0.5);
    margin: 0;
    font-size: 14px;
}

.footer-copyright a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* 菜单切换按钮样式 */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    cursor: pointer;
    position: relative;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-color);
    transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    border-radius: 1px;
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* 安全区域适配 */
@supports (padding: max(0px)) {
    .header {
        padding-left: max(2rem, env(safe-area-inset-left));
        padding-right: max(2rem, env(safe-area-inset-right));
        padding-top: max(0px, env(safe-area-inset-top));
    }
    
    .header-inner {
        padding-left: max(1rem, env(safe-area-inset-left));
        padding-right: max(1rem, env(safe-area-inset-right));
    }
    
    .nav {
        padding-left: max(0.625rem, env(safe-area-inset-left));
        padding-right: max(0.625rem, env(safe-area-inset-right));
        padding-bottom: max(0.625rem, env(safe-area-inset-bottom));
    }
    
    .footer-copyright {
        padding-bottom: max(1rem, env(safe-area-inset-bottom));
    }
}

/* 横屏适配 */
@media (max-width: 896px) and (orientation: landscape) {
    .hero {
        padding-top: 3rem;
    }
    
    .display-1 {
        font-size: 2.5rem;
    }
    
    .buttons {
        flex-direction: row;
    }
    
    .nav.active {
        max-height: 80vh;
        overflow-y: auto;
    }
}

/* 移动端下亮色主题样式调整 */
@media (max-width: 768px) {
    :root[data-theme="light"] .nav {
        background: rgba(255, 255, 255, 0.95);
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    }
    
    :root[data-theme="light"] .nav a:not(.register):not(.theme-toggle-btn) {
        color: var(--text-color);
    }
    
    :root[data-theme="light"] .theme-toggle-btn::after {
        color: var(--text-color);
    }
}

/* 特性卡片标题 */
:root[data-theme="light"] .feature-card h3 {
    color: var(--primary-color);
}

/* 价格卡片 */
:root[data-theme="light"] .price-card.featured {
    border: 1px solid var(--primary-color);
    background-color: rgba(30, 60, 114, 0.05);
}

:root[data-theme="light"] .price-card h3 {
    color: var(--primary-color);
}

/* 亮色主题下的标题文字 */
:root[data-theme="light"] .pricing h2,
:root[data-theme="light"] .features h2 {
    background: linear-gradient(to right, #1e3c72, #4b9fe1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}