/* ============================================================
   Global CSS — SRich 祥富數位 (aaservice.cc)
   改色系、按鈕、卡片等全站共用樣式只要改這裡
   ============================================================ */

/* --- A. CSS Variables --- */
:root {
    --primary: #A8B600;
    --primary-light: #C8D600;
    --primary-hover: #d4d00b;
    --primary-shadow: rgba(200, 214, 0, 0.25);
    --primary-shadow-strong: rgba(200, 214, 0, 0.4);
    --dark: #1a202c;
    --dark-2: #2d3748;
    --gray: #718096;
    --gray-2: #4a5568;
    --gray-light: #e2e8f0;
    --gray-bg: #f7fafc;
    --gray-bg-2: #edf2f7;
    --footer-text: #cbd5e0;
    --bg: #ffffff;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft JhengHei', sans-serif;
    --max-width: 1200px;
}

/* --- B. Reset + Base --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font);
    line-height: 1.6;
    color: var(--dark-2);
    background: var(--bg);
}

img {
    max-width: 100%;
    height: auto;
}

a {
    transition: color 0.3s;
}

/* --- C. Shared Components --- */

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Section */
section {
    padding: 5rem 2rem;
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 1rem;
}

.section-header h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--primary);
    margin: 1rem auto 0;
    border-radius: 2px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--gray);
    max-width: 700px;
    margin: 0 auto;
}

/* Breadcrumb */
.breadcrumb {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem 2rem;
    font-size: 0.875rem;
    color: var(--gray);
}

.breadcrumb a {
    color: var(--primary);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    margin: 0 0.5rem;
}

/* Buttons */
.btn {
    padding: 1rem 2.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.125rem;
    transition: all 0.3s;
    display: inline-block;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--primary);
    color: var(--dark);
    box-shadow: 0 2px 12px var(--primary-shadow-strong);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(200, 214, 0, 0.5);
    background: var(--primary-hover);
}

.btn-secondary {
    background: transparent;
    color: #333333;
    border: 2px solid #333333;
}

.btn-secondary:hover {
    background: #333333;
    color: var(--bg);
}

.btn-dark {
    background: var(--dark);
    color: var(--primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn-dark:hover {
    background: var(--dark-2);
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    padding: 4rem 2rem;
    text-align: center;
    color: var(--dark);
}

.cta-section h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.125rem;
    color: var(--dark-2);
    margin-bottom: 2rem;
}

/* CTA Group (button row) */
.cta-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Highlight Box */
.highlight-box {
    background: var(--gray-bg);
    border-left: 4px solid var(--primary);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 4px;
}

/* Comparison Table */
.comparison-table {
    background: var(--bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table thead {
    background: var(--primary);
}

.comparison-table th {
    padding: 1.5rem;
    text-align: left;
    font-weight: 700;
    color: var(--dark);
    font-size: 1.125rem;
}

.comparison-table td {
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-light);
}

.comparison-table tbody tr:hover {
    background: #fffbf0;
}

/* --- D. Header / Footer / Mobile Menu --- */

/* Header */
header {
    background: var(--bg);
    border-bottom: 3px solid var(--primary);
    padding: 1rem 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
}

.logo {
    height: 50px;
    width: auto;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

nav a {
    margin-left: 2rem;
    text-decoration: none;
    color: var(--gray-2);
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    cursor: pointer;
    gap: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 3px;
    background: var(--dark);
    border-radius: 2px;
    transition: all 0.3s;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* Mobile Nav - desktop hidden */
.mobile-nav {
    display: none;
}

/* Footer */
footer {
    background: var(--dark);
    color: var(--footer-text);
    padding: 3rem 0 1.5rem;
    border-top: 3px solid var(--primary);
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--primary);
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.footer-section p, .footer-section a {
    color: var(--footer-text);
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}

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

.footer-bottom {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1.5rem 2rem 0;
    border-top: 1px solid var(--dark-2);
    text-align: center;
    color: var(--gray);
    font-size: 0.875rem;
}

/* --- E. Responsive --- */

@media (max-width: 768px) {
    /* Header responsive */
    .header-content > nav {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg);
        border-top: 1px solid var(--gray-light);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        flex-direction: column;
        padding: 1rem 0;
    }

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

    .mobile-nav a {
        padding: 1rem 2rem;
        text-decoration: none;
        color: var(--gray-2);
        font-weight: 500;
        border-bottom: 1px solid var(--gray-light);
        transition: all 0.3s;
    }

    .mobile-nav a:last-child {
        border-bottom: none;
    }

    .mobile-nav a:hover {
        background: #F9FBF0;
        color: var(--primary);
    }

    /* Footer responsive */
    .footer-content {
        grid-template-columns: 1fr;
    }

    /* Section header responsive */
    .section-header h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .cta-group {
        flex-direction: column;
        align-items: center;
    }

    .section-header h2 {
        font-size: 1.75rem;
    }
}