/* 變數定義 */
:root {
    --primary-blue: #1a5f7a;
    --primary-light: #219eab;
    --primary-dark: #0d3d4d;
    --accent-blue: #5bc0de;
    --text-dark: #2c3e50;
    --text-light: #596275;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e4e8;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* 重設與基本樣式 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans HK', 'Microsoft JhengHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* 按鈕樣式 */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    border: 2px solid transparent;
}

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

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

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

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

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

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

.btn-submit {
    width: 100%;
    padding: 16px 28px;
    font-size: 17px;
}

/* 導航欄 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    padding: 15px 0;
}

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

.logo {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    background-color: var(--primary-blue);
    color: white;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

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

.nav-menu a {
    color: var(--text-dark);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

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

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

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

.hamburger {
    width: 24px;
    height: 2px;
    background-color: var(--text-dark);
    transition: all var(--transition-fast);
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--text-dark);
    transition: all var(--transition-fast);
}

.hamburger::before {
    top: -7px;
}

.hamburger::after {
    top: 7px;
}

/* Hero 區域 */
.hero {
    padding: 140px 0 100px;
    background: linear-gradient(135deg, var(--bg-light) 0%, #e8f4f8 100%);
    position: relative;
    overflow: hidden;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 24px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-light);
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.decoration-circle {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent-blue) 100%);
    opacity: 0.1;
}

.circle-1 {
    width: 300px;
    height: 300px;
    top: -100px;
    right: -100px;
}

.circle-2 {
    width: 200px;
    height: 200px;
    bottom: -50px;
    left: -50px;
}

/* 區域標題 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 16px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-light);
}

/* 服務範圍 */
.services {
    padding: 100px 0;
    background-color: var(--bg-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition-normal);
}

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

.service-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 20px;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-light);
    font-size: 15px;
}

/* 為何選擇我們 */
.why-us {
    padding: 100px 0;
    background-color: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background-color: var(--bg-white);
    border-radius: 12px;
    padding: 36px 28px;
    text-align: center;
    transition: all var(--transition-normal);
}

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

.feature-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-light);
    font-size: 15px;
}

/* 收費方案 */
.pricing {
    padding: 100px 0;
    background-color: var(--bg-white);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    align-items: start;
}

.pricing-card {
    background-color: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    position: relative;
    transition: all var(--transition-normal);
}

.pricing-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
}

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

.pricing-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-light));
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 32px;
}

.pricing-header h3 {
    font-size: 26px;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.pricing-tag {
    color: var(--text-light);
    font-size: 15px;
}

.pricing-features ul {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    padding: 12px 0;
    color: var(--text-dark);
    border-bottom: 1px solid var(--border-color);
}

.pricing-features li:last-child {
    border-bottom: none;
}

/* 工作流程 */
.process {
    padding: 100px 0;
    background-color: var(--bg-light);
}

.process-steps {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 20px;
}

.process-step {
    flex: 1;
    min-width: 180px;
    max-width: 200px;
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-light));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 24px;
    box-shadow: var(--shadow-md);
}

.process-step h3 {
    font-size: 18px;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.process-step p {
    color: var(--text-light);
    font-size: 14px;
}

.process-arrow {
    font-size: 36px;
    color: var(--primary-light);
    align-self: center;
}

/* 客戶評價 */
.testimonials {
    padding: 100px 0;
    background-color: var(--bg-white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.testimonial-card {
    background-color: var(--bg-light);
    border-radius: 12px;
    padding: 40px 32px;
    transition: all var(--transition-normal);
}

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

.testimonial-rating {
    color: #f5a623;
    font-size: 18px;
    margin-bottom: 20px;
}

.testimonial-text {
    color: var(--text-dark);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 24px;
    font-style: italic;
}

.testimonial-author {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.author-name {
    font-weight: 600;
    color: var(--primary-dark);
    font-size: 16px;
}

.author-company {
    color: var(--text-light);
    font-size: 14px;
}

/* 常見問題 */
.faq {
    padding: 100px 0;
    background-color: var(--bg-light);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--bg-white);
    border-radius: 8px;
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 17px;
    font-weight: 600;
    color: var(--primary-dark);
    transition: all var(--transition-fast);
}

.faq-question:hover {
    background-color: var(--bg-light);
}

.faq-toggle {
    font-size: 28px;
    font-weight: 300;
    color: var(--primary-light);
    transition: transform var(--transition-fast);
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 24px 20px;
    color: var(--text-light);
    line-height: 1.8;
}

/* 聯絡我們 */
.contact {
    padding: 100px 0;
    background-color: var(--bg-white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-form-container {
    background-color: var(--bg-light);
    border-radius: 16px;
    padding: 40px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    font-size: 15px;
}

.form-group input,
.form-group textarea {
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(33, 158, 171, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #9da5b4;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 17px;
    color: var(--primary-dark);
    margin-bottom: 6px;
}

.contact-item p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Footer */
.footer {
    background-color: var(--primary-dark);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
    font-size: 18px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

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

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

/* 返回頂部按鈕 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-blue);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
}

/* 響應式設計 */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .pricing-card.featured {
        transform: none;
    }

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

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

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

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

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-white);
        flex-direction: column;
        gap: 0;
        padding: 0;
        box-shadow: var(--shadow-md);
        display: none;
    }

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

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

    .nav-menu a {
        display: block;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border-color);
    }

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

    .hero {
        padding: 100px 0 60px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 17px;
    }

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

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

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

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

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

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

    .footer-section ul {
        display: inline-block;
        text-align: left;
    }
}

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

    .hero h1 {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .section-header h2 {
        font-size: 28px;
    }
}

/* 成功訊息 */
.form-success {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
    padding: 16px 20px;
    border-radius: 8px;
    text-align: center;
    margin-top: 20px;
    display: none;
}

.form-success.show {
    display: block;
}