/* 兵卒Office 网站样式 - 蓝绿白配色 */

:root {
    --primary-blue: #1a73e8;
    --primary-green: #0d9488;
    --dark-blue: #0d47a1;
    --dark-green: #065f46;
    --light-blue: #e8f0fe;
    --light-green: #d1fae5;
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius: 8px;
    --radius-lg: 12px;
    --transition: all 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--white);
}

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

.nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: baseline;
    gap: 4px;
    text-decoration: none;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-sub {
    font-size: 18px;
    font-weight: 500;
    color: var(--gray-600);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-menu a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    transition: var(--transition);
}

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

.nav-cta {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    color: var(--white) !important;
    padding: 8px 20px;
    border-radius: var(--radius);
}

.nav-cta:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* Hero区域 */
.hero {
    max-width: 1200px;
    margin: 0 auto;
    padding: 120px 24px 80px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.hero-content h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--dark-blue), var(--dark-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--gray-600);
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
}

.hero-image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    color: var(--white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
    background: var(--light-blue);
}

.btn-large {
    padding: 16px 40px;
    font-size: 18px;
}

/* 通用section */
section {
    padding: 80px 24px;
}

.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 48px;
    color: var(--gray-900);
}

/* 功能卡片 */
.features {
    background: var(--gray-50);
}

.feature-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.feature-icon.doc {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
}

.feature-icon.pdf {
    background: linear-gradient(135deg, #ef4444, #b91c1c);
}

.feature-icon.image {
    background: linear-gradient(135deg, #10b981, #047857);
}

.feature-icon.idphoto {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.feature-icon.mobile {
    background: linear-gradient(135deg, #8b5cf6, #6d28d9);
}

.feature-icon.util {
    background: linear-gradient(135deg, #06b6d4, #0891b2);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--gray-900);
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.6;
}

/* 截图 */
.screenshots {
    text-align: center;
}

.screenshot-grid {
    max-width: 1200px;
    margin: 0 auto 32px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.screenshot-grid img {
    width: 100%;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

.screenshot-grid img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

/* API区域 */
.api-section {
    background: linear-gradient(135deg, var(--light-blue), var(--light-green));
}

.api-content {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.api-info p {
    font-size: 18px;
    margin-bottom: 24px;
    color: var(--gray-700);
}

.api-list {
    list-style: none;
    margin-bottom: 24px;
}

.api-list li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--gray-700);
}

.api-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-green);
    font-weight: bold;
}

.api-code {
    background: var(--gray-900);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.api-code pre {
    padding: 24px;
    color: #e5e7eb;
    font-family: "JetBrains Mono", "Fira Code", Consolas, monospace;
    font-size: 14px;
    line-height: 1.7;
    overflow-x: auto;
}

code {
    background: var(--gray-100);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: "JetBrains Mono", "Fira Code", Consolas, monospace;
    font-size: 0.9em;
}

/* 技术栈 */
.architecture {
    text-align: center;
}

.tech-stack {
    max-width: 800px;
    margin: 0 auto 32px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.tech-item {
    background: var(--white);
    border: 1px solid var(--gray-200);
    padding: 16px 24px;
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.tech-name {
    font-weight: 600;
    color: var(--primary-blue);
}

.tech-desc {
    font-size: 14px;
    color: var(--gray-600);
}

/* 下载区域 */
.download-section {
    text-align: center;
    background: linear-gradient(135deg, var(--dark-blue), var(--dark-green));
    color: var(--white);
}

.download-section h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.download-section p {
    font-size: 18px;
    margin-bottom: 32px;
    opacity: 0.9;
}

/* 页脚 */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: 48px 24px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 32px;
}

.footer-brand .logo {
    font-size: 28px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--gray-300);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-license {
    text-align: right;
    font-size: 14px;
}

.footer-license p {
    margin: 4px 0;
}

/* 响应式 */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 100px;
    }

    .hero-content h1 {
        font-size: 36px;
    }

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

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

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

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

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-md);
        display: none;
    }

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

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

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

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: 12px;
    }

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

/* 功能详情页样式 */
.feature-detail-hero {
    max-width: 800px;
    margin: 100px auto 0;
    padding: 60px 24px;
    text-align: center;
}

.feature-detail-hero .feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    border-radius: 16px;
}

.feature-detail-hero h1 {
    font-size: 36px;
    margin-bottom: 12px;
}

.feature-detail-hero p {
    font-size: 18px;
    color: var(--gray-600);
}

.feature-detail-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 48px 24px;
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 48px;
    align-items: start;
}

.feature-detail-content .content-wrapper h2 {
    font-size: 24px;
    margin: 32px 0 16px;
    color: var(--gray-900);
}

.feature-detail-content .content-wrapper h2:first-child {
    margin-top: 0;
}

.format-grid, .tool-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin: 16px 0;
}

.format-item, .tool-item {
    background: var(--gray-50);
    padding: 20px;
    border-radius: var(--radius);
}

.format-item strong, .tool-item h4 {
    display: block;
    margin-bottom: 8px;
    color: var(--primary-blue);
}

.format-item ul, .tool-item p {
    color: var(--gray-700);
    font-size: 14px;
    margin: 0;
}

.feature-list, .size-list, .step-list {
    margin: 16px 0 16px 24px;
    color: var(--gray-700);
}

.feature-list li, .step-list li {
    margin: 8px 0;
    line-height: 1.6;
}

.use-cases {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin: 16px 0;
}

.use-case {
    background: var(--light-blue);
    padding: 20px;
    border-radius: var(--radius);
}

.use-case h4 {
    margin-bottom: 8px;
    color: var(--primary-blue);
}

.use-case p {
    font-size: 14px;
    color: var(--gray-700);
}

.feature-screenshot img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.api-call-section {
    max-width: 800px;
    margin: 0 auto;
    padding: 48px 24px;
    background: var(--gray-50);
}

.api-call-section h2 {
    text-align: center;
    margin-bottom: 24px;
}

@media (max-width: 900px) {
    .feature-detail-content {
        grid-template-columns: 1fr;
    }

    .feature-screenshot {
        order: -1;
    }

    .format-grid, .tool-grid {
        grid-template-columns: 1fr;
    }

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

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content, .hero-image, .feature-card {
    animation: fadeInUp 0.6s ease forwards;
}

.hero-image {
    animation-delay: 0.2s;
}

.feature-card:nth-child(2) { animation-delay: 0.1s; }
.feature-card:nth-child(3) { animation-delay: 0.2s; }
.feature-card:nth-child(4) { animation-delay: 0.3s; }
.feature-card:nth-child(5) { animation-delay: 0.4s; }
.feature-card:nth-child(6) { animation-delay: 0.5s; }