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

:root {
    /* 木纹色系 */
    --primary-color: #8B6914;
    --primary-light: #A68B3D;
    --primary-lighter: #C4AD66;
    --secondary-color: #A0522D;
    --warning-color: #D4A574;
    --danger-color: #C75B39;
    --text-primary: #3E2723;
    --text-regular: #5D4E37;
    --text-secondary: #8B7355;
    --border-color: #D4C4A8;
    --bg-color: #FDF8F0;
    --white: #FFFEF9;
    --paper-color: #FFFEF9;
    --wood-light: #DEB887;
    --wood-lighter: #F5DEB3;
    --shadow-sm: 0 1px 3px rgba(139, 105, 20, 0.08);
    --shadow-md: 0 2px 8px rgba(139, 105, 20, 0.1);
    --shadow-lg: 0 4px 16px rgba(139, 105, 20, 0.12);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB',
                 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    color: var(--text-primary);
    line-height: 1.8;
    overflow-x: hidden;
    font-size: 16px;
    background: var(--bg-color);
    letter-spacing: 0.2px;
    /* 纸张纹理背景 - 更淡 */
    background-image:
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 32px,
            rgba(139, 105, 20, 0.012) 32px,
            rgba(139, 105, 20, 0.012) 33px
        );
}

/* 标题使用衬线字体 */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Georgia', 'Noto Serif SC', 'Source Han Serif CN', serif;
    letter-spacing: 0.5px;
}

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

/* 导航栏 */
.navbar {
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

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

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

/* 导航栏登录按钮样式 */
.nav-links .btn-primary {
    background: var(--primary-color);
    color: var(--white);
    border: 1px solid var(--primary-color);
    padding: 0.35rem 1rem;
    border-radius: 16px;
    font-size: 0.85rem;
}

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

/* 导航栏注册按钮样式 */
.nav-links .btn-secondary-nav {
    background: var(--white);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 0.35rem 1rem;
    border-radius: 16px;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
    font-size: 0.85rem;
}

.nav-links .btn-secondary-nav:hover {
    background: var(--bg-color);
    color: var(--primary-color);
}

/* 按钮样式 */
.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    padding: 0.5rem 1.25rem;
    border-radius: 20px;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
}

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-color);
    padding: 0.5rem 1.25rem;
    border-radius: 20px;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
    border: 2px solid var(--primary-color);
    font-size: 0.9rem;
}

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

.btn-large {
    padding: 0.6rem 1.75rem;
    font-size: 1rem;
    font-weight: 500;
}

/* Hero Section */
.hero {
    background: var(--white);
    padding: 5rem 0 4rem;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    animation: fadeInLeft 1s ease-out;
}

.hero-title {
    font-size: 3.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-regular);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-image {
    animation: fadeInRight 1s ease-out;
}

.hero-illustration {
    background: var(--white);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.hero-illustration svg {
    width: 100%;
    height: auto;
}

.hero-badge {
    display: inline-block;
    background: rgba(139, 105, 20, 0.1);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(139, 105, 20, 0.2);
}

.hero-features {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-regular);
    font-size: 1rem;
}

.feature-emoji {
    font-size: 1.25rem;
}

.feature-name {
    font-weight: 500;
    color: var(--text-primary);
}

/* 核心功能 */
.features {
    padding: 3.5rem 0;
    background: var(--bg-color);
}

.features-grid {
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 3rem;
}

.feature-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary-color);
    opacity: 0.6;
    flex-shrink: 0;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: border-color 0.2s ease;
    min-width: 350px;
}

.feature-card:hover {
    border-color: var(--primary-color);
}

.feature-icon-large {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.feature-desc {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.feature-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--bg-color);
    border-radius: var(--radius-sm);
}

.item-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.item-content {
    display: flex;
    flex-direction: column;
}

.item-content strong {
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

.feature-highlight {
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.highlight-badge {
    background: var(--primary-color);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 500;
    flex-shrink: 0;
}

.feature-highlight span:last-child {
    font-size: 0.9rem;
    color: var(--text-regular);
}

/* 使用流程 */
.how-it-works {
    padding: 3.5rem 0;
    background: var(--white);
}

.steps-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.step-card {
    background: var(--bg-color);
    padding: 2rem 1.5rem;
    border-radius: var(--radius-md);
    text-align: center;
    width: 200px;
    position: relative;
    border: 1px solid var(--border-color);
    transition: border-color 0.2s ease;
}

.step-card:hover {
    border-color: var(--primary-color);
}

.step-card .step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 30px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: bold;
}

.step-card .step-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.step-card h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.step-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.step-arrow {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
}

.step-highlight {
    background: var(--white);
    border: 1px solid var(--primary-color);
}

.step-highlight .step-number {
    background: var(--primary-color);
}

.step-badge {
    display: inline-block;
    margin-top: 0.75rem;
    padding: 0.2rem 0.6rem;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* 通用样式 */
.section-title {
    text-align: center;
    font-size: 2.2rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-weight: 400;
}

/* 使用场景 */
.use-cases {
    padding: 3.5rem 0;
    background: var(--white);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.use-case-card {
    background: var(--bg-color);
    padding: 2rem 1.5rem;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: border-color 0.2s ease;
}

.use-case-card:hover {
    border-color: var(--primary-color);
}

.use-case-emoji {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.use-case-card h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.use-case-card p {
    color: var(--text-regular);
    line-height: 1.6;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.use-case-benefit {
    font-size: 0.85rem;
    color: var(--primary-color);
    font-weight: 500;
}

/* 差异化 */
.difference {
    padding: 3.5rem 0;
    background: var(--bg-color);
}

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

.difference-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
}

.diff-compare {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.diff-not, .diff-is {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1rem;
}

.diff-not {
    color: var(--text-secondary);
    text-decoration: line-through;
}

.diff-is {
    color: var(--primary-color);
    font-weight: 600;
}

.diff-icon {
    font-size: 1.25rem;
}

.difference-card p {
    color: var(--text-regular);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 关于我们 */
.about {
    padding: 3.5rem 0;
    background: var(--white);
}

.about-content {
    max-width: 700px;
    margin: 2rem auto 0;
}

.about-quote {
    background: var(--bg-color);
    border-left: 3px solid var(--primary-color);
    padding: 2rem;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin-bottom: 2rem;
}

.quote-text {
    font-size: 1.2rem;
    color: var(--text-primary);
    line-height: 1.8;
    font-style: italic;
    text-align: center;
    margin: 0;
}

.about-text {
    font-size: 1.05rem;
    color: var(--text-regular);
    margin-bottom: 1rem;
    line-height: 1.9;
    text-align: center;
}

/* CTA Section */
.cta {
    padding: 3.5rem 0;
    background: var(--primary-color);
    text-align: center;
    color: var(--white);
}

.cta h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.cta p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    margin-bottom: 0;
}

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

.cta .btn-primary:hover {
    background: var(--bg-color);
}

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

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.footer-brand p {
    opacity: 0.8;
}

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

.footer-column h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.footer-column a {
    display: block;
    color: var(--white);
    text-decoration: none;
    margin-bottom: 0.5rem;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-column a:hover {
    opacity: 1;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    text-align: center;
    opacity: 0.6;
}

.footer-bottom .icp-info {
    margin-top: 8px;
    font-size: 12px;
}

.footer-bottom .icp-info a {
    color: inherit;
    text-decoration: none;
    opacity: 0.8;
}

.footer-bottom .icp-info a:hover {
    opacity: 1;
    text-decoration: underline;
}

/* 动画 */
@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .features-grid {
        flex-direction: column;
        align-items: center;
    }

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

    .feature-card {
        width: 100%;
        max-width: 400px;
    }

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

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

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

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

    .step-card {
        width: 100%;
        max-width: 300px;
    }

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

@media (max-width: 768px) {
    /* 导航栏移动端适配 */
    .navbar {
        padding: 0.75rem 0;
    }

    .navbar .container {
        flex-direction: column;
        gap: 0.75rem;
    }

    .nav-brand h1 {
        font-size: 1.25rem;
    }

    .nav-links {
        gap: 0.75rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-links a {
        font-size: 0.9rem;
    }

    .nav-links .btn-primary {
        padding: 0.4rem 1rem;
        font-size: 0.9rem;
    }

    /* Hero 区域移动端适配 */
    .hero {
        padding: 2rem 0;
    }

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

    .hero-badge {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }

    .hero-title {
        font-size: 1.75rem;
        line-height: 1.3;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .hero-features {
        gap: 0.5rem;
        flex-wrap: nowrap;
        justify-content: center;
    }

    .hero-feature {
        padding: 0.4rem 0.6rem;
        font-size: 0.75rem;
    }

    .feature-emoji {
        font-size: 0.9rem;
    }

    .hero-feature {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }

    .hide-mobile {
        display: none;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }

    .btn-large {
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }

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

    .hero-image {
        display: none;
    }

    /* 功能区域移动端适配 */
    .features {
        padding: 2.5rem 0;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .section-subtitle {
        font-size: 0.9rem;
    }

    .feature-card {
        padding: 1.25rem;
    }

    .feature-card h3 {
        font-size: 1.1rem;
    }

    .feature-icon-large {
        font-size: 2rem;
    }

    .feature-item {
        padding: 0.5rem 0;
    }

    .feature-highlight {
        flex-direction: column;
        text-align: center;
        padding: 0.75rem;
    }

    /* 适合人群移动端适配 */
    .use-cases {
        padding: 2.5rem 0;
    }

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

    .use-case-card {
        padding: 1.25rem;
    }

    .use-case-emoji {
        font-size: 2rem;
    }

    .use-case-card h3 {
        font-size: 1.1rem;
    }

    /* 关于区域移动端适配 */
    .about {
        padding: 2.5rem 0;
    }

    .about-quote {
        padding: 1.25rem;
    }

    .quote-text {
        font-size: 1rem;
    }

    /* CTA 区域移动端适配 */
    .cta {
        padding: 2.5rem 0;
    }

    .cta h2 {
        font-size: 1.5rem;
    }

    .cta p {
        font-size: 0.9rem;
    }

    /* Footer 移动端适配 */
    .footer {
        padding: 2rem 0 1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        text-align: center;
    }

    .footer-brand h3 {
        font-size: 1.25rem;
    }

    .footer-links {
        justify-content: center;
        gap: 2rem;
    }

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

    .footer-bottom {
        margin-top: 1.5rem;
        padding-top: 1rem;
    }
}

/* 职场展望 */
.career-outlook {
    padding: 3.5rem 0;
    background: linear-gradient(to bottom, var(--bg-color), var(--paper-color));
}

.career-outlook .section-title {
    text-align: center;
}

.career-outlook .section-subtitle {
    text-align: center;
    margin-bottom: 2rem;
}

.outlook-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    max-width: 1100px;
    margin: 0 auto;
}

.outlook-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.75rem;
    transition: all 0.2s ease;
}

.outlook-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.outlook-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.outlook-content h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.outlook-content p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.outlook-note {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

@media (max-width: 900px) {
    .outlook-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .outlook-grid {
        grid-template-columns: 1fr;
    }
}

/* 隐私说明 */
.privacy-section {
    padding: 3.5rem 0;
    background: var(--white);
}

.privacy-section .section-title {
    text-align: center;
}

.privacy-section .section-subtitle {
    text-align: center;
    margin-bottom: 2rem;
}

.privacy-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    max-width: 1100px;
    margin: 0 auto;
}

.privacy-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.75rem;
}

.privacy-icon {
    font-size: 2rem;
}

.privacy-card h4 {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

.privacy-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

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