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

:root {
    --primary-color: #1676ff;
    --secondary-color: #16baff;
    --accent-color: #06b6d4;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* DiveSee 品牌字体样式 */
.divesee-brand {
    font-family: 'Roboto', sans-serif;
    font-weight: 700;
    background: linear-gradient(180deg, #16baff 0%, #1676ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
    padding-right: 0.2em;
    margin-left: 0.3em;
}

.tm-mark {
    font-size: 0.5em;
    font-weight: 400;
    vertical-align: super;
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-logo {
    width: 40px;
    height: 40px;
    transition: transform 0.3s ease;
}

.nav-logo:hover {
    transform: scale(1.1) rotate(5deg);
}

.nav-brand h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
    margin: 0;
}

.brand-subtitle {
    color: #032151;
    font-weight: 600;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    transition: all 0.3s ease;
}

.menu-toggle {
    display: none;
}

/* 移动端菜单遮罩 */
.menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.menu-overlay.active {
    display: block;
    opacity: 1;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

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

/* 英雄区域 */
.hero {
    padding: 140px 0 100px;
    background: linear-gradient(135deg, #E3F5FC 0%, #4AC0FD 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
    z-index: 1;
    will-change: transform, opacity;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="none"/><path d="M0 50 Q 25 25, 50 50 T 100 50" stroke="rgba(255,255,255,0.1)" fill="none"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-logo {
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease;
}

.hero-brand {
    font-size: 5rem;
    font-weight: 800;
    margin-bottom: -1.2rem;
    font-style: italic;
    letter-spacing: 2px;
}

.hero-chinese {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0;
    color:#032151;
}

.hero-tagline {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    padding: 0.5rem 2rem;
    background: rgba(37, 99, 235, 0.8);
    display: inline-block;
    border-radius: 25px;
    font-weight: 600;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-slogan {
    font-size: 1.8rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    font-weight: 300;
    letter-spacing: 3px;
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: fadeInUp 1s ease 0.6s both;
}

.btn {
    padding: 12px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: white;
    color: var(--primary-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: var(--primary-color);
}

.btn-github {
    background: #24292e;
    color: white;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-github:hover {
    background: #000;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.btn-github i {
    font-size: 1.2em;
}

.btn-demo {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-demo:hover {
    background: linear-gradient(135deg, #059669, #047857);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(16, 185, 129, 0.4);
}

.btn-demo i {
    font-size: 1.2em;
}

/* 通用区域样式 */
.section {
    padding: 80px 0;
    position: relative;
    z-index: 2;
    background: inherit;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-dark);
    font-weight: 700;
}

.section-intro {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 技术路线区域 */
.tech-section {
    background: var(--bg-light);
}

.architecture {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.arch-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.arch-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.arch-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.arch-icon i {
    display: block;
}

.arch-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.arch-desc {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.tech-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    background: var(--bg-light);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--primary-color);
    font-weight: 500;
}

/* 工作流 */
.workflow {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 4rem;
}

.workflow-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--secondary-color);
}

.workflow-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.workflow-step {
    flex: 1;
    min-width: 200px;
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.workflow-step:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    transform: scale(1.05);
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.workflow-step:hover .step-number {
    background: white;
    color: var(--primary-color);
}

.workflow-step h4 {
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.workflow-step p {
    font-size: 0.9rem;
    opacity: 0.9;
}

.workflow-arrow {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: bold;
}

/* 技术模块 */
.tech-modules {
    background: white;
    padding: 2rem;
    border-radius: 12px;
}

.modules-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--accent-color);
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.module-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.module-card h4 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.module-card h4 i {
    color: var(--accent-color);
    margin-right: 0.5rem;
}

.module-card ul {
    list-style: none;
}

.module-card li {
    padding: 0.5rem 0;
    color: var(--text-light);
}

.module-card li strong {
    color: var(--text-dark);
}

/* 产品痛点区域 */
.problems-section {
    background: white;
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

@media (max-width: 1200px) {
    .problems-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .problems-grid {
        grid-template-columns: 1fr;
    }
}

.problem-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-top: 4px solid var(--primary-color);
    display: flex;
    flex-direction: column;
}

.problem-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-top-color: var(--secondary-color);
}

.problem-header {
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
    color: var(--text-dark);
    padding: 1.5rem 1.5rem 1rem;
    text-align: center;
}

.problem-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.problem-icon i {
    display: block;
}

.problem-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.problem-content {
    padding: 1.5rem;
    flex-grow: 1;
}

.problem-desc {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.6;
}



.problem-list {
    list-style: none;
}

.problem-list li {
    padding: 0.4rem 0 0.4rem 1.5rem;
    position: relative;
    color: var(--text-dark);
    font-size: 0.9rem;
    line-height: 1.5;
}

.problem-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
}



/* 解决方案区域 */
.solutions-section {
    background: var(--bg-light);
}

.solution-architecture {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.solution-block {
    flex: 1;
    min-width: 300px;
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.solution-icon {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 1rem;
}

.solution-block h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    text-align: center;
}

.solution-desc {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.solution-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: var(--primary-color);
    color: white;
    transform: translateX(5px);
}

.feature-badge {
    width: 30px;
    height: 30px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.feature-item:hover .feature-badge {
    background: white;
    color: var(--primary-color);
}

.feature-item span:not(.feature-badge) {
    font-weight: 600;
    display: block;
    margin-bottom: 0.25rem;
}

.feature-item p {
    font-size: 0.9rem;
    opacity: 0.9;
    margin: 0;
}

.solution-connector {
    font-size: 3rem;
    color: var(--accent-color);
    font-weight: bold;
}

/* 您是否区域 */
.why-section {
    background: white;
}

.why-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.why-question {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.why-question i {
    margin-right: 0.5rem;
    color: var(--accent-color);
}

.why-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 2rem;
}

.goal-highlight {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    padding: 2rem;
    border-radius: 12px;
    margin: 2rem 0;
    border-left: 4px solid var(--accent-color);
}

.goal-title {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.goal-title i {
    margin-right: 0.5rem;
}

.goal-text {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin: 0;
}

.why-solution {
    font-size: 1.2rem;
    color: var(--secondary-color);
    font-weight: 600;
    text-align: center;
    padding: 1.5rem;
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

/* 保留旧的目标区域样式以防其他地方使用 */
.goal-section {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.goal-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

/* Sample 对比区域 */
.sample-section {
    background: white;
}

.sample-icon {
    font-size: 2rem;
    vertical-align: middle;
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.comparison-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.comparison-item {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease;
}

.comparison-item:hover {
    transform: translateY(-5px);
}

.comparison-header {
    padding: 1.5rem;
    color: white;
}

.before-header {
    background: linear-gradient(135deg, #64748b, #475569);
}

.after-header {
    background: linear-gradient(135deg, #10b981, #059669);
}

.comparison-header h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.comparison-note {
    font-size: 0.85rem;
    opacity: 0.9;
    margin: 0;
}

.comparison-text {
    padding: 2rem;
    font-size: 1.1rem;
    line-height: 2;
    background: var(--bg-light);
    min-height: 300px;
}

.comparison-text.highlighted {
    background: #fffbeb;
}

/* 高亮样式 */
.underline-main {
    text-decoration: underline wavy #1e40af;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

.bold-main {
    font-weight: 800;
    color: #dc2626;
}

.bold-key {
    font-weight: 700;
    color: #2563eb;
}

.bold-blue {
    font-weight: 700;
    color: #2563eb;
}

.highlight-yellow {
    background: #fef08a;
    padding: 2px 4px;
    border-radius: 3px;
}

.highlight-green {
    background: #86efac;
    padding: 2px 4px;
    border-radius: 3px;
}

.highlight-blue {
    background: #93c5fd;
    padding: 2px 4px;
    border-radius: 3px;
}

.underline-theme {
    text-decoration: underline;
    text-decoration-color: #f59e0b;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

/* 图例 */
.sample-legend {
    display: flex;
    justify-content: center;
    gap: 3rem;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 12px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

.legend-dot {
    width: 40px;
    height: 20px;
    border-radius: 4px;
    display: inline-block;
}

.legend-dot.underline {
    border-bottom: 2px wavy #1e40af;
    background: transparent;
    text-decoration: underline wavy #1e40af;
    text-decoration-thickness: 2px;
}

.legend-dot.main {
    background: #86efac;
}

.legend-dot.keyword {
    background: #2563eb;
}

/* 我们的解决方案区域 */
.our-solutions-section {
    background: var(--bg-light);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

@media (max-width: 1200px) {
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .solutions-grid {
        grid-template-columns: 1fr;
    }
}

.solution-card {
    background: white;
    padding: 2rem 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-top: 4px solid var(--primary-color);
    text-align: center;
    display: flex;
    flex-direction: column;
}

.solution-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-top-color: var(--secondary-color);
}

.solution-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
    color: var(--secondary-color);
}

.solution-icon i {
    display: block;
}

.solution-card h3 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 700;
}

.solution-desc {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 0.95rem;
    text-align: left;
}

.solution-desc strong {
    color: var(--text-dark);
    font-weight: 600;
}

/* 对比分析区域 */
.comparison-section {
    background: var(--bg-light);
}

.comparison-table-wrapper {
    overflow-x: auto;
    margin-bottom: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.comparison-table {
    width: 100%;
    background: white;
    border-collapse: collapse;
    border-radius: 12px;
    overflow: hidden;
}

.comparison-table thead {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.comparison-table th {
    padding: 1.5rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 1.1rem;
}

.comparison-table th.highlight-col {
    background: linear-gradient(135deg, var(--secondary-color), #9333ea);
    position: relative;
}

.comparison-table th.highlight-col::after {
    content: '⭐';
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 1.5rem;
}

.comparison-table .sub-title {
    font-size: 0.85rem;
    font-weight: 400;
    opacity: 0.9;
}

.comparison-table tbody tr {
    transition: all 0.3s ease;
}

.comparison-table tbody tr:hover {
    background: #f0f9ff;
    transform: scale(1.01);
}

.comparison-table td {
    padding: 1.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: top;
}

.comparison-table td.feature-name {
    font-weight: 600;
    color: var(--primary-color);
    background: var(--bg-light);
    white-space: nowrap;
}

.comparison-table td.our-solution {
    background: #fef3c7;
    font-weight: 500;
}

.comparison-table td strong {
    color: var(--primary-color);
    display: block;
    margin-bottom: 0.5rem;
}

.comparison-table td.cell-highlight {
    background: #dbeafe !important;
    box-shadow: inset 0 0 0 2px var(--primary-color);
    animation: pulse 0.5s ease;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}

.comparison-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.highlight-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.highlight-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.highlight-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    color: var(--primary-color);
}

.highlight-icon i {
    display: block;
}

.highlight-card h3 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

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

/* 核心功能区域 */
.features-section {
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.feature-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    color: var(--accent-color);
}

.feature-icon i {
    display: block;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
}

/* 费用方案区域 */
.pricing-section {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.pricing-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.pricing-card-featured {
    border: 3px solid var(--primary-color);
    transform: scale(1.05);
}

.pricing-card-featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.pricing-badge {
    position: absolute;
    top: 5px;
    right: -30px;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    padding: 0.4rem 2.5rem;
    font-size: 0.85rem;
    font-weight: 700;
    transform: rotate(45deg);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.pricing-header {
    text-align: center;
    padding: 2.5rem 2rem 2rem;
    background: linear-gradient(135deg, #fafafa 0%, #f5f5f5 100%);
    border-bottom: 2px solid #e5e7eb;
}

.pricing-card-featured .pricing-header {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
}

.pricing-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.pricing-icon i {
    display: block;
}

.pricing-card-featured .pricing-icon {
    color: #f59e0b;
}

.pricing-name {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.pricing-price {
    margin-bottom: 1rem;
}

.price-currency {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-light);
    vertical-align: top;
}

.price-amount {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
}

.pricing-card-featured .price-amount {
    background: linear-gradient(180deg, #16baff 0%, #1676ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-period {
    font-size: 1.2rem;
    color: var(--text-light);
}

.pricing-desc {
    color: var(--text-light);
    font-size: 1rem;
}

.pricing-features {
    padding: 2rem;
    flex-grow: 1;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-dark);
    font-size: 0.95rem;
    border-bottom: 1px solid #f3f4f6;
}

.feature-list li:last-child {
    border-bottom: none;
}

.feature-list li i {
    color: #10b981;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.feature-list li.feature-unavailable {
    color: var(--text-light);
    opacity: 0.6;
}

.feature-list li.feature-unavailable i {
    color: #dc2626;
}

.feature-list li.feature-highlight {
    color: var(--primary-color);
    font-weight: 600;
}

.feature-list li.feature-highlight i {
    color: var(--primary-color);
}

.feature-list li.feature-limit {
    background: #fef3c7;
    padding: 0.75rem 1rem;
    margin: 0.5rem -1rem;
    border-radius: 8px;
    border: 1px solid #fcd34d;
}

.feature-list li.feature-limit i {
    color: #f59e0b;
}

.pricing-action {
    padding: 0 2rem 2rem;
}

.btn-pricing-free,
.btn-pricing-plus,
.btn-pricing-pro {
    width: 100%;
    text-align: center;
    padding: 1rem 2rem;
    border-radius: 10px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    display: block;
    text-decoration: none;
}

.btn-pricing-free {
    background: var(--bg-light);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-pricing-free:hover {
    background: var(--primary-color);
    color: white;
}

.btn-pricing-plus {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-pricing-plus:hover {
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
    transform: translateY(-2px);
}

.btn-pricing-pro {
    background: linear-gradient(135deg, #7c3aed, #6d28d9);
    color: white;
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
}

.btn-pricing-pro:hover {
    box-shadow: 0 8px 20px rgba(124, 58, 237, 0.4);
    transform: translateY(-2px);
}

.pricing-notes {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.pricing-notes p {
    display: inline-block;
    margin: 0.5rem 2rem;
    color: var(--text-light);
    font-size: 0.95rem;
}

.pricing-notes i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

/* 页脚 */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--text-light);
}

.footer-links {
    display: flex;
    gap: 3rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-light);
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar .container {
        flex-wrap: wrap;
    }

    /* 移动端品牌logo调整 */
    .nav-brand h1 {
        font-size: 1.3rem;
    }

    .nav-logo {
        width: 35px;
        height: 35px;
    }

    .menu-toggle {
        display: block !important;
        background: none;
        border: none;
        font-size: 2rem;
        color: var(--primary-color);
        cursor: pointer;
        padding: 0;
        z-index: 1001;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        max-width: 300px;
        height: 100vh;
        background: white;
        flex-direction: column;
        gap: 0.5rem;
        padding: 80px 1.5rem 2rem;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        overflow-y: auto;
        z-index: 1000;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu a {
        display: block;
        padding: 1rem;
        border-radius: 8px;
        transition: all 0.3s ease;
    }

    .nav-menu a:hover,
    .nav-menu a.active {
        background: var(--bg-light);
        color: var(--primary-color);
    }

    .nav-menu a::after {
        display: none;
    }

    .hero-brand {
        font-size: 3rem;
    }

    .hero-chinese {
        font-size: 2rem;
    }

    .hero-tagline {
        font-size: 1.2rem;
        padding: 0.5rem 1.5rem;
    }

    .hero-slogan {
        font-size: 1.3rem;
        letter-spacing: 1px;
    }

    .comparison-container {
        grid-template-columns: 1fr;
    }

    .comparison-text {
        padding: 1.5rem;
        font-size: 1rem;
    }

    .sample-legend {
        flex-direction: column;
        gap: 1rem;
    }

    .why-question {
        font-size: 1.2rem;
    }

    .why-description {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .workflow-steps {
        flex-direction: column;
    }

    .workflow-arrow {
        transform: rotate(90deg);
    }

    .solution-architecture {
        flex-direction: column;
    }

    .solution-connector {
        transform: rotate(90deg);
    }

    .modules-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
    }

    .comparison-table {
        font-size: 0.9rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 1rem 0.5rem;
    }

    .comparison-highlights {
        grid-template-columns: 1fr;
    }

    /* 费用方案响应式 */
    .pricing-cards {
        grid-template-columns: 1fr;
    }

    .pricing-card-featured {
        transform: scale(1);
    }

    .pricing-card-featured:hover {
        transform: translateY(-10px);
    }

    .pricing-badge {
        font-size: 0.75rem;
        padding: 0.3rem 2rem;
    }

    .pricing-notes p {
        display: block;
        margin: 0.5rem 0;
    }
}