/* 基本樣式設置 */
:root {
    --primary-color: #1a365d;
    --secondary-color: #4a90e2;
    --accent-color: #f2b632;
    --dark-gray: #333333;
    --medium-gray: #666666;
    --light-gray: #f5f5f5;
    --white: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans TC', sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
}

.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 15px;
}

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.25rem;
    text-align: center;
    margin-bottom: 50px;
    color: var(--primary-color);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: var(--accent-color);
    margin: 15px auto 0;
}

/* 按鈕樣式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

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

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

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

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

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

/* 導航欄 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
}

.logo a {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-menu ul {
    display: flex;
    list-style: none;
}

.nav-menu ul li {
    margin-left: 25px;
}

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

.nav-menu ul li a:hover {
    color: var(--secondary-color);
}

.hamburger {
    display: none;
    cursor: pointer;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 5px 0;
    transition: var(--transition);
}

/* 英雄區 */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(26, 54, 93, 0.8), rgba(26, 54, 93, 0.8)), url('https://via.placeholder.com/1920x1080?text=PingLex') no-repeat center center/cover;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white);
    padding-top: 80px;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* 問題與挑戰 */
.challenges {
    background-color: var(--light-gray);
}

.challenges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.challenge-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.challenge-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.challenge-card .icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.challenge-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

/* 解決方案介紹 */
.solution-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 40px;
}

.solution-text {
    flex: 1;
    min-width: 300px;
}

.solution-image {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.solution-image img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.solution-intro {
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.value-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.value-point {
    margin-bottom: 20px;
}

.value-point h3 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.value-point h3 i {
    margin-right: 10px;
    color: var(--accent-color);
}

/* 技術架構 */
.technology {
    background-color: var(--light-gray);
}

.tech-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
    font-size: 1.1rem;
}

.tech-diagram {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 50px;
}

.tech-component {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    text-align: center;
    flex: 1;
    min-width: 200px;
    max-width: 250px;
    transition: var(--transition);
}

.tech-component:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.tech-icon {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.tech-component h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.tech-arrow {
    font-size: 1.5rem;
    color: var(--medium-gray);
    display: flex;
    align-items: center;
}

.tech-advantages {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 50px;
}

.tech-advantage {
    display: flex;
    align-items: center;
    gap: 15px;
}

.tech-advantage i {
    color: var(--accent-color);
    font-size: 1.2rem;
}

/* 三檔預算方案 */
.pricing-plans {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

.pricing-plan {
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    overflow: hidden;
    flex: 1;
    min-width: 280px;
    max-width: 350px;
    transition: var(--transition);
}

.pricing-plan:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.professional {
    transform: scale(1.05);
    z-index: 1;
}

.professional:hover {
    transform: scale(1.05) translateY(-10px);
}

.plan-header {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 30px 20px;
    text-align: center;
}

.professional .plan-header {
    background-color: var(--secondary-color);
}

.plan-header h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.price {
    font-size: 1.5rem;
    font-weight: 700;
}

.plan-body {
    padding: 30px 20px;
}

.plan-target, .plan-hardware, .plan-features {
    margin-bottom: 20px;
}

.plan-target h4, .plan-hardware h4, .plan-features h4 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.plan-features ul {
    list-style: none;
}

.plan-features ul li {
    padding: 8px 0;
    border-bottom: 1px solid var(--light-gray);
    position: relative;
    padding-left: 25px;
}

.plan-features ul li::before {
    content: '\f00c';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    color: var(--accent-color);
    position: absolute;
    left: 0;
}

.plan-footer {
    padding: 20px;
    text-align: center;
}

/* 應用場景 */
.applications {
    background-color: var(--light-gray);
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.application-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.application-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.app-icon {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
    text-align: center;
}

.application-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
    text-align: center;
}

.app-benefit {
    margin-top: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--light-gray);
    padding: 10px;
    border-radius: 4px;
}

.app-benefit i {
    color: var(--accent-color);
}

/* 競爭優勢 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.advantage-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.adv-icon {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
    text-align: center;
}

.advantage-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
    text-align: center;
}

.adv-compare {
    margin-top: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--light-gray);
    padding: 10px;
    border-radius: 4px;
}

.adv-compare i {
    color: #e74c3c;
}

/* 發展願景 */
.vision {
    background-color: var(--light-gray);
}

.mission-statement {
    max-width: 800px;
    margin: 0 auto 50px;
    text-align: center;
    font-size: 1.2rem;
    font-style: italic;
    color: var(--primary-color);
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50px;
    width: 4px;
    background-color: var(--secondary-color);
}

.timeline-item {
    position: relative;
    padding-left: 100px;
    margin-bottom: 50px;
}

.timeline-marker {
    position: absolute;
    left: 0;
    width: 100px;
    text-align: center;
}

.timeline-marker span {
    display: inline-block;
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: 500;
    font-size: 0.9rem;
}

.timeline-content {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.timeline-content ul {
    list-style: none;
}

.timeline-content ul li {
    padding: 8px 0;
    position: relative;
    padding-left: 25px;
}

.timeline-content ul li::before {
    content: '\f054';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    color: var(--accent-color);
    position: absolute;
    left: 0;
}

/* 聯繫我們 */
.contact-container {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.contact-form {
    flex: 1;
    min-width: 300px;
}

.contact-info {
    flex: 1;
    min-width: 300px;
    padding: 30px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 8px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--light-gray);
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.info-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.info-item i {
    font-size: 1.5rem;
    color: var(--accent-color);
}

.social-media {
    margin-top: 30px;
    display: flex;
    gap: 15px;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

.social-icon:hover {
    background-color: var(--accent-color);
}

/* 頁腳 */
.footer {
    background-color: var(--dark-gray);
    color: var(--white);
    padding: 50px 0 20px;
    position: relative;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.footer-logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
}

.footer-links {
    display: flex;
    gap: 20px;
}

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

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

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: var(--light-gray);
}

.back-to-top {
    position: absolute;
    right: 30px;
    bottom: 30px;
}

.back-to-top a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

.back-to-top a:hover {
    background-color: var(--accent-color);
}

/* 響應式設計 */
@media (max-width: 1199px) {
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
        margin-bottom: 40px;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .tech-diagram {
        flex-direction: column;
    }
    
    .tech-component {
        max-width: 100%;
    }
    
    .tech-arrow {
        transform: rotate(90deg);
    }
}

@media (max-width: 991px) {
    .pricing-plans {
        flex-direction: column;
        align-items: center;
    }
    
    .pricing-plan {
        max-width: 100%;
        width: 100%;
    }
    
    .professional {
        transform: none;
    }
    
    .professional:hover {
        transform: translateY(-10px);
    }
}

@media (max-width: 767px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--white);
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu ul {
        flex-direction: column;
        align-items: center;
        padding: 30px 0;
    }
    
    .nav-menu ul li {
        margin: 15px 0;
    }
    
    .hamburger {
        display: block;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero {
        height: auto;
        min-height: 100vh;
        padding: 100px 0 50px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-marker {
        width: 60px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 40px 0;
    }
    
    .section-title {
        font-size: 1.5rem;
        margin-bottom: 30px;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .btn {
        width: 100%;
    }
    
    .challenges-grid,
    .applications-grid,
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .value-points {
        grid-template-columns: 1fr;
    }
}