/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #1F2328;
    background: #FAF6F2;
}

/* 导航栏 */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(250, 246, 242, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid #EDE5DD;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 3rem 1.5rem 1rem;
}

.logo {
    display: flex;
    align-items: center;
    height: 40px;
}

.logo img {
    height: 65%;
    width: auto;
    object-fit: contain;
}

.nav-links {
    display: flex;
    gap: 3rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: #1F2328;
    font-size: 0.95rem;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 0.6;
}

.nav-cta {
    background: #D26E41;
    color: #FFFFFF;
    padding: 0.6rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.95rem;
    transition: background 0.3s;
}

.nav-cta:hover {
    background: #C45F34;
}

.nav-cta:active {
    background: #A94E29;
}

/* Hero Section */
.hero {
    margin-top: 80px;
    min-height: 90vh;
    display: flex;
    align-items: center;
    padding: 0 3rem;
    background: radial-gradient(ellipse at center, #FFF7F0 0%, #FAF6F2 100%);
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.2;
    margin-bottom: 2.5rem;
    font-weight: 300;
    max-width: 850px;
    letter-spacing: -0.02em;
}

.hero h1 .highlight {
    font-weight: 400;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    background: rgba(210, 110, 65, 0.1);
    color: #D26E41;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 400;
    margin-bottom: 2rem;
    border: 1px solid rgba(210, 110, 65, 0.2);
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.btn-primary {
    background: #D26E41;
    color: #FFFFFF;
    padding: 0.9rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: background 0.3s;
    display: inline-block;
}

.btn-primary:hover {
    background: #C45F34;
}

.btn-secondary {
    background: transparent;
    color: #1F2328;
    padding: 0.9rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 400;
    border: 1px solid #EDE5DD;
    transition: all 0.3s;
    display: inline-block;
}

.btn-secondary:hover {
    border-color: #D26E41;
    color: #D26E41;
}

.hero-stats {
    display: flex;
    gap: 4rem;
    padding-top: 3rem;
    border-top: 1px solid #EDE5DD;
}

.hero-trust {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    padding-top: 3rem;
    margin-top: 3rem;
    border-top: 1px solid #EDE5DD;
}

.trust-badge {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.trust-label {
    font-size: 0.85rem;
    color: #5B5F66;
    font-weight: 300;
}

.trust-value {
    font-size: 1.8rem;
    font-weight: 300;
    color: #D26E41;
    letter-spacing: -0.01em;
}

/* 核心价值 */
.value-section {
    background: #FFFDFB;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
}

.value-item {
    position: relative;
    padding-left: 4rem;
}

.value-number {
    position: absolute;
    left: 0;
    top: 0;
    font-size: 2.5rem;
    font-weight: 200;
    color: #F1D4C5;
    line-height: 1;
}

.value-item h3 {
    font-size: 1.4rem;
    font-weight: 400;
    margin-bottom: 1rem;
    color: #1F2328;
}

.value-item p {
    font-size: 1rem;
    color: #5B5F66;
    line-height: 1.7;
}

/* 客户案例 */
.cases-section {
    background: #FAF6F2;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.case-card {
    background: #FFFDFB;
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid #EDE5DD;
    transition: all 0.3s;
}

.case-card:hover {
    border-color: #D26E41;
    box-shadow: 0 8px 24px rgba(210, 110, 65, 0.1);
}

.case-industry {
    font-size: 0.8rem;
    color: #D26E41;
    font-weight: 500;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.case-card h3 {
    font-size: 1.3rem;
    font-weight: 400;
    margin-bottom: 1rem;
    color: #1F2328;
    line-height: 1.4;
}

.case-desc {
    font-size: 0.95rem;
    color: #5B5F66;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.case-metrics {
    display: flex;
    gap: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid #EDE5DD;
}

.metric {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.metric-value {
    font-size: 1.6rem;
    font-weight: 400;
    color: #D26E41;
}

.metric-label {
    font-size: 0.8rem;
    color: #5B5F66;
}

/* 简化工作流 */
.workflow-simple {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    padding: 3rem;
    background: #FFFDFB;
    border-radius: 12px;
    border: 1px solid #EDE5DD;
}

.workflow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    flex: 1;
    max-width: 160px;
}

.step-num {
    width: 48px;
    height: 48px;
    background: #D26E41;
    color: #FFFFFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    font-size: 1.2rem;
}

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

.step-info h4 {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: #1F2328;
}

.step-info p {
    font-size: 0.85rem;
    color: #5B5F66;
    line-height: 1.5;
}

.workflow-arrow {
    color: #D26E41;
    font-size: 1.5rem;
    font-weight: 300;
    flex-shrink: 0;
}

/* 简化信任模块 */
.trust-section-simple {
    background: #FFFDFB;
}

.trust-grid-simple {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.trust-simple-item h4 {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.8rem;
    color: #1F2328;
}

.trust-simple-item p {
    font-size: 0.95rem;
    color: #5B5F66;
    line-height: 1.7;
}

.hero-stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.hero-stat-item strong {
    font-size: 2rem;
    font-weight: 300;
    color: #D26E41;
    letter-spacing: -0.02em;
}

.hero-stat-item span {
    font-size: 0.9rem;
    color: #5B5F66;
    font-weight: 300;
}

/* 模块网格 */
.modules-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.module-card {
    background: #FFFDFB;
    padding: 3rem;
    border-radius: 12px;
    border: 1px solid #EDE5DD;
    transition: all 0.3s;
    position: relative;
    background-size: 80%;
    background-position: center;
    background-repeat: no-repeat;
}

.module-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 253, 251, 0.85);
    border-radius: 12px;
    z-index: 0;
}

.module-card > * {
    position: relative;
    z-index: 1;
}

.module-card:hover {
    border-color: #F1D4C5;
    box-shadow: 0 8px 24px rgba(210, 110, 65, 0.08);
    transform: translateY(-2px);
}

.module-card.featured {
    grid-column: span 2;
    background: linear-gradient(135deg, #FFFDFB 0%, #FFF7F0 100%);
    border: 1px solid #F1D4C5;
}

.module-icon-text {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #D26E41 0%, #C45F34 100%);
    color: #FFFFFF;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    letter-spacing: 0.5px;
}

.module-icon-img {
    display: none;
}

.module-label {
    font-size: 0.75rem;
    color: #5B5F66;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 1rem;
    font-weight: 400;
}

.module-card h3 {
    font-size: 1.6rem;
    font-weight: 400;
    margin-bottom: 1rem;
    color: #1F2328;
}

.module-card p {
    font-size: 1rem;
    color: #5B5F66;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.module-features {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.feature-tag {
    padding: 0.4rem 1rem;
    background: #FCEEE6;
    border-radius: 20px;
    font-size: 0.85rem;
    color: #6B3E27;
    font-weight: 400;
    border: 1px solid #F1D4C5;
}

.module-example {
    background: rgba(110, 141, 106, 0.05);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 3px solid #6E8D6A;
}

.example-label {
    font-size: 0.75rem;
    color: #6E8D6A;
    font-weight: 500;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.example-text {
    font-size: 0.95rem;
    color: #1F2328;
    font-style: italic;
}

/* 工作流路径 */
.workflow-section {
    background: #FAF6F2;
}

.workflow-container {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.workflow-path {
    background: #FFFDFB;
    padding: 3rem;
    border-radius: 12px;
    border: 1px solid #EDE5DD;
}

.path-header {
    margin-bottom: 3rem;
}

.path-badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    background: #FCEEE6;
    color: #D26E41;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.path-header h3 {
    font-size: 1.8rem;
    font-weight: 400;
    margin-bottom: 0.8rem;
    color: #1F2328;
}

.path-header p {
    font-size: 1.05rem;
    color: #5B5F66;
}

.path-steps {
    display: flex;
    align-items: center;
    gap: 1rem;
    overflow-x: auto;
    padding-bottom: 1rem;
}

.step-item {
    flex-shrink: 0;
    width: 180px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.step-number {
    width: 40px;
    height: 40px;
    background: #D26E41;
    color: #FFFFFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    font-size: 1.1rem;
}

.step-content h4 {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: #1F2328;
}

.step-content p {
    font-size: 0.85rem;
    color: #5B5F66;
    line-height: 1.5;
}

.step-arrow {
    flex-shrink: 0;
    color: #D26E41;
    font-size: 1.5rem;
    font-weight: 300;
    margin: 0 0.5rem;
}

/* 可信与可控 */
.trust-section {
    background: #FFFDFB;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.trust-item {
    text-align: left;
}

.trust-icon-text {
    width: 56px;
    height: 56px;
    background: #FCEEE6;
    color: #D26E41;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 1rem;
    border: 1px solid #F1D4C5;
}

.trust-item h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: #1F2328;
    font-weight: 400;
}

.trust-item p {
    color: #5B5F66;
    font-size: 0.95rem;
    line-height: 1.7;
    font-weight: 300;
}

.cta-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: flex-start;
}

.hero p {
    font-size: 1.25rem;
    color: #5B5F66;
    margin-bottom: 3rem;
    max-width: 650px;
    line-height: 1.7;
    font-weight: 300;
}

/* Section通用样式 */
section {
    padding: 5rem 3rem;
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    margin-bottom: 5rem;
}

.section-label {
    font-size: 0.8rem;
    color: #5B5F66;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    max-width: 800px;
    letter-spacing: -0.01em;
    line-height: 1.3;
}

.section-description {
    font-size: 1.1rem;
    color: #5B5F66;
    max-width: 650px;
    line-height: 1.8;
    font-weight: 300;
}

/* 产品展示 */
.products {
    background: #FFFDFB;
    border-radius: 0;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: #EDE5DD;
    border: 1px solid #EDE5DD;
}

.product-item {
    background: #FFFDFB;
    padding: 4rem;
    transition: background 0.3s, border 0.3s;
    border: 1px solid transparent;
}

.product-item:hover {
    background: #FFF7F0;
    border: 1px solid #F1D4C5;
}

.product-label {
    font-size: 0.75rem;
    color: #5B5F66;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.product-item h3 {
    font-size: 1.9rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    color: #1F2328;
    letter-spacing: -0.01em;
}

.product-item p {
    font-size: 1.05rem;
    color: #5B5F66;
    line-height: 1.8;
    margin-bottom: 2rem;
    font-weight: 300;
}

.product-tags {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.tag {
    padding: 0.35rem 0.9rem;
    background: #FCEEE6;
    border-radius: 20px;
    font-size: 0.8rem;
    color: #8A5A3B;
    font-weight: 300;
    border: 1px solid transparent;
    transition: border 0.3s;
}

.tag:hover {
    border: 1px solid #F1D4C5;
}

.learn-more {
    color: #D26E41;
    text-decoration: none;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid #D26E41;
    padding-bottom: 2px;
    transition: all 0.3s;
}

.learn-more:hover {
    color: #C45F34;
    border-bottom-color: #C45F34;
}

/* 特性网格 */
.features-section {
    background: #FFFDFB;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4rem;
    margin-top: 3rem;
}

.feature-item {
    padding: 0;
}

.feature-item h4 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: #1F2328;
    font-weight: 400;
}

.feature-item p {
    color: #5B5F66;
    font-size: 0.95rem;
    line-height: 1.7;
    font-weight: 300;
}

/* 统计数据 */
.stats {
    background: #2B2A28;
    color: #FFFFFF;
    padding: 8rem 3rem;
    margin: 0;
}

.stats-container {
    max-width: 1400px;
    margin: 0 auto;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: left;
}

.stat-item h3 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    font-weight: 300;
    letter-spacing: -0.02em;
    color: #D26E41;
}

.stat-item p {
    font-size: 0.95rem;
    color: #E6E0DB;
    font-weight: 300;
}

/* 页脚 */
footer {
    background: #1F1E1B;
    color: #E6E0DB;
    padding: 5rem 3rem 3rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-section h4 {
    margin-bottom: 1.5rem;
    color: #FFFFFF;
    font-weight: 400;
    font-size: 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section a {
    color: #E6E0DB;
    text-decoration: none;
    font-size: 0.95rem;
    transition: all 0.3s;
}

.footer-section a:hover {
    color: #FFFFFF;
    text-decoration: underline;
}

.footer-about p {
    line-height: 1.7;
    font-size: 0.95rem;
    max-width: 400px;
}

.footer-bottom {
    padding-top: 3rem;
    border-top: 1px solid rgba(230, 224, 219, 0.2);
    max-width: 1400px;
    margin: 0 auto;
}

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

.footer-bottom-content p {
    font-size: 0.9rem;
    color: #8B8680;
    margin: 0;
}

.copyright {
    font-weight: 400;
}

.footer-divider {
    color: #5B5F66;
    opacity: 0.5;
}

.footer-tagline {
    color: #9B9590;
    font-weight: 300;
}

.footer-icp {
    color: #8B8680;
    text-decoration: none;
    font-size: 0.9rem;
    border: 1px solid rgba(139, 134, 128, 0.4);
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    transition: all 0.3s ease;
}

.footer-icp:hover {
    color: #FFFFFF;
    border-color: rgba(210, 110, 65, 0.6);
    box-shadow: 0 6px 16px rgba(210, 110, 65, 0.15);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 3rem;
    }

    .hero-trust {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

    .module-card.featured {
        grid-column: span 1;
    }

    .trust-grid-simple {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

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

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

    .workflow-step {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 1rem 1.5rem;
    }

    .nav-links {
        display: none;
    }

    .hero {
        padding: 0 1.5rem;
        min-height: 70vh;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .hero-actions {
        flex-direction: column;
        gap: 1rem;
    }

    .btn-primary, .btn-secondary {
        width: 100%;
        text-align: center;
    }

    .hero-trust {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    section {
        padding: 4rem 1.5rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .module-card {
        padding: 2rem;
    }

    .trust-grid-simple {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .cta-actions {
        flex-direction: column;
    }

    .cta-actions .btn-primary,
    .cta-actions .btn-secondary {
        width: 100%;
        text-align: center;
    }
}

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

/* 暖沙×赤陶配色系统变量 */
:root{
    --warm-bg: #FAF6F2;
    --warm-surface: #FFFDFB;
    --warm-text: #1F2328;
    --warm-muted: #5B5F66;
    --warm-primary: #D26E41;
    --warm-primary-hover: #C45F34;
    --warm-primary-active: #A94E29;
    --warm-light-fill: #FCEEE6;
    --warm-light-border: #F1D4C5;
    --warm-sage: #6E8D6A;
    --warm-divider: #EDE5DD;
    --warm-dark: #2B2A28;
    --warm-footer: #1F1E1B;
    --warm-light-text: #E6E0DB;
}