/* ============================================
   TY-EMS 產品官網 — 設計系統
   品牌色：金黃 #f7c325
   ============================================ */

/* --- CSS 變數 --- */
:root {
    --brand-primary: #f7c325;
    --brand-primary-hover: #e5a800;
    --brand-primary-light: #fff8e1;
    --brand-dark: #333;
    --brand-darker: #1a1a1a;
    --brand-line: #00B900;
    --brand-line-hover: #00a000;

    --text-primary: #333;
    --text-secondary: #666;
    --text-muted: #888;
    --text-white: #fff;

    --bg-white: #fff;
    --bg-light: #f5f5f5;
    --bg-lighter: #f9f9f9;
    --bg-dark: #333;
    --bg-darker: #1a1a1a;

    --border: #eee;
    --border-dark: #ddd;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-pill: 50px;

    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
    --shadow-hover: 0 12px 32px rgba(0,0,0,0.12);

    --nav-height: 70px;
    --max-width: 1200px;
    --section-padding: 80px 0;

    --transition: all 0.3s ease;
}

/* --- Reset --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* --- 字體 --- */
body.font-tc { font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }
body.font-sc { font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }
body.font-th { font-family: 'Noto Sans Thai', 'Sarabun', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }

body {
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--brand-primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--brand-primary-hover); }

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

/* --- 容器 --- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* --- 區塊 --- */
.section {
    padding: var(--section-padding);
}
.section-light { background: var(--bg-light); }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-brand { background: var(--brand-primary); color: var(--bg-darker); }

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
}
.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}
.section-dark .section-subtitle { color: rgba(255,255,255,0.7); }

/* --- 按鈕 --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    line-height: 1.4;
}
.btn-lg { padding: 14px 36px; font-size: 16px; }
.btn-sm { padding: 8px 16px; font-size: 13px; }

.btn-primary {
    background: var(--brand-primary);
    color: var(--bg-darker);
    border-color: var(--brand-primary);
}
.btn-primary:hover {
    background: var(--brand-primary-hover);
    border-color: var(--brand-primary-hover);
    color: var(--bg-darker);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(247,195,37,0.3);
}

.btn-outline {
    background: transparent;
    color: var(--brand-primary);
    border-color: var(--brand-primary);
}
.btn-outline:hover {
    background: var(--brand-primary);
    color: var(--bg-darker);
}

.btn-dark {
    background: var(--bg-dark);
    color: var(--text-white);
    border-color: var(--bg-dark);
}
.btn-dark:hover {
    background: #555;
    border-color: #555;
    color: var(--text-white);
}

.btn-white {
    background: var(--bg-white);
    color: var(--text-primary);
    border-color: var(--bg-white);
}
.btn-white:hover {
    background: var(--bg-light);
    border-color: var(--bg-light);
    color: var(--text-primary);
}

.btn-line {
    background: var(--brand-line);
    color: var(--text-white);
    border-color: var(--brand-line);
}
.btn-line:hover {
    background: var(--brand-line-hover);
    border-color: var(--brand-line-hover);
    color: var(--text-white);
}

/* --- 導航列 --- */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    height: var(--nav-height);
    display: flex;
    align-items: center;
    padding: 0 40px;
    transition: var(--transition);
}
.top-nav.scrolled {
    box-shadow: var(--shadow-sm);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
}

.nav-logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav-logo span { color: var(--brand-primary); }

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}
.nav-menu a {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}
.nav-menu a:hover,
.nav-menu a.active {
    color: var(--text-primary);
}

/* Mega Menu */
.nav-dropdown {
    position: relative;
}
.nav-dropdown-trigger {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-dropdown-trigger i {
    font-size: 12px;
    transition: var(--transition);
}
.nav-dropdown:hover .nav-dropdown-trigger i {
    transform: rotate(180deg);
}

.mega-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 24px;
    min-width: 640px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(8px);
    transition: var(--transition);
    pointer-events: none;
}
.nav-dropdown:hover .mega-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

.mega-menu-item {
    display: flex;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    text-decoration: none;
    color: var(--text-primary);
}
.mega-menu-item:hover {
    background: var(--bg-light);
    color: var(--text-primary);
}
.mega-menu-item .mega-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--brand-primary-light);
    color: var(--brand-primary-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}
.mega-menu-item h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 2px;
}
.mega-menu-item p {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.4;
}

/* 導航右側 */
.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 語系切換 */
.lang-switch {
    display: flex;
    background: var(--bg-light);
    border-radius: var(--radius-pill);
    padding: 3px;
    gap: 0;
}
.lang-toggle-btn {
    padding: 5px 10px;
    border: none;
    border-radius: var(--radius-pill);
    background: transparent;
    color: var(--text-muted);
    font-size: 12px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}
.lang-toggle-btn:hover { color: var(--text-primary); }
.lang-toggle-btn.active {
    background: var(--brand-primary);
    color: var(--bg-darker);
    font-weight: 600;
}

/* 手機漢堡選單 */
.nav-hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-primary);
    padding: 4px;
}

/* 手機版 Overlay */
.mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--bg-white);
    z-index: 999;
    padding: 80px 24px 24px;
    overflow-y: auto;
}
.mobile-overlay.open { display: block; }

.mobile-menu {
    list-style: none;
}
.mobile-menu > li {
    border-bottom: 1px solid var(--border);
}
.mobile-menu > li > a,
.mobile-menu > li > .mobile-accordion-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}
.mobile-submenu {
    display: none;
    padding: 0 0 12px 16px;
}
.mobile-submenu.open { display: block; }
.mobile-submenu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    font-size: 14px;
    color: var(--text-secondary);
}
.mobile-submenu a:hover { color: var(--brand-primary); }

.mobile-close {
    position: absolute;
    top: 20px;
    right: 24px;
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-primary);
}

.mobile-cta {
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.mobile-cta .btn { width: 100%; }

/* --- 卡片 --- */
.card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}
.card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--brand-primary-light);
    color: var(--brand-primary-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 16px;
}

.card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}
.card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}
.card .card-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--brand-primary);
}
.card .card-link:hover { gap: 8px; }

/* --- 網格 --- */
.grid, .grid-2, .grid-3, .grid-4, .grid-6 {
    display: grid;
    gap: 24px;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

/* --- Hero --- */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--bg-darker) 0%, #2a2a2a 50%, var(--bg-dark) 100%);
    color: var(--text-white);
    position: relative;
    overflow: hidden;
}
.hero::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(247,195,37,0.12) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 720px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(247,195,37,0.15);
    color: var(--brand-primary);
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
}
.hero h1 .highlight { color: var(--brand-primary); }

.hero .subtitle {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 12px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
}
.hero-stat {
    text-align: center;
}
.hero-stat .number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--brand-primary);
    display: block;
}
.hero-stat .label {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}

/* --- Footer --- */
.site-footer {
    background: var(--bg-darker);
    color: rgba(255,255,255,0.7);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 12px;
}
.footer-brand span { color: var(--brand-primary); }
.footer-desc {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 16px;
}

.footer-col h4 {
    color: var(--text-white);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}
.footer-col ul {
    list-style: none;
}
.footer-col li {
    margin-bottom: 8px;
}
.footer-col a {
    color: rgba(255,255,255,0.6);
    font-size: 13px;
    transition: var(--transition);
}
.footer-col a:hover {
    color: var(--brand-primary);
}

.footer-bottom {
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.4);
}

/* --- CTA Section --- */
.cta-section {
    background: var(--brand-primary);
    padding: 64px 0;
    text-align: center;
}
.cta-section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--bg-darker);
    margin-bottom: 12px;
}
.cta-section p {
    color: rgba(0,0,0,0.6);
    margin-bottom: 24px;
    font-size: 1rem;
}
.cta-section .btn-group {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* --- 統計欄 --- */
.stats-bar {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
    padding: 32px 0;
}
.stat-item {
    text-align: center;
}
.stat-item .stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--brand-primary);
}
.stat-item .stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* --- 信任標籤 --- */
.trust-badges {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    padding: 16px 0;
}
.trust-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    font-size: 13px;
    color: var(--text-secondary);
}
.trust-badge i { color: var(--brand-primary); font-size: 16px; }

/* --- 頁面 Hero（子頁面用） --- */
.page-hero {
    padding: 120px 0 60px;
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
    color: var(--text-white);
    text-align: center;
}
.page-hero h1 { font-size: 2.5rem; font-weight: 700; margin-bottom: 12px; }
.page-hero p { font-size: 1.1rem; color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto; }

/* --- 區塊標題（通用） --- */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}
.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 12px;
}
.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}
.bg-light { background: var(--bg-light); }

/* --- Hero 子元素 --- */
.hero-subtitle {
    font-size: 1.35rem;
    color: rgba(255,255,255,0.65);
    margin-bottom: 12px;
    font-weight: 400;
}
.hero-desc {
    font-size: 1rem;
    color: rgba(255,255,255,0.55);
    line-height: 1.8;
    margin-bottom: 32px;
    max-width: 600px;
}

/* --- 卡片 hover 變體 --- */
.card-hover { cursor: default; }

/* --- 產品卡片 --- */
.product-card {
    display: block;
    text-align: center;
    padding: 32px 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-white);
    transition: var(--transition);
    text-decoration: none;
    color: var(--text-primary);
}
.product-card:hover {
    border-color: var(--brand-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    color: var(--text-primary);
}
.product-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--brand-primary-light);
    color: var(--brand-primary-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin: 0 auto 16px;
}
.product-card h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
}
.product-card p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
}

/* --- LINE 整合區塊 --- */
.line-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}
.line-content .badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 16px;
}
.badge-line {
    background: #e6f9e6;
    color: var(--brand-line);
}
.line-content h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.3;
}
.line-content > p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}
.line-features-mini {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.line-feature-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}
.line-feature-item i {
    font-size: 20px;
    color: var(--brand-line);
    margin-top: 2px;
}
.line-feature-item strong {
    font-size: 14px;
    display: block;
    margin-bottom: 2px;
}
.line-feature-item p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
}

/* LINE 手機 Mockup */
.line-mockup {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}
.phone-frame {
    width: 280px;
    background: var(--bg-white);
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--border);
}
.phone-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
}
.phone-header-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
}
.phone-chat {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 200px;
}
.chat-bubble {
    padding: 12px 14px;
    border-radius: 12px 12px 12px 4px;
    font-size: 13px;
    line-height: 1.5;
}
.chat-system {
    background: var(--bg-light);
    border: 1px solid var(--border);
}
.line-advantages {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
}
.line-advantages span {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--brand-line);
    font-weight: 500;
}

/* --- 信任標籤（首頁版 — 卡片式）--- */
.trust-badges {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding: 0;
}
.trust-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 8px;
    padding: 24px 16px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}
.trust-badge:hover {
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}
.trust-badge i { color: var(--brand-primary); font-size: 28px; margin-bottom: 4px; }
.trust-badge h4 { font-size: 14px; font-weight: 600; margin: 0; }
.trust-badge p { font-size: 13px; color: var(--text-muted); margin: 0; line-height: 1.5; }

/* --- CTA 按鈕組 --- */
.cta-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}
.btn-outline-light {
    background: transparent;
    color: var(--bg-darker);
    border-color: var(--bg-darker);
}
.btn-outline-light:hover {
    background: var(--bg-darker);
    color: var(--text-white);
}

/* --- 痛點區塊 --- */
.pain-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.pain-card {
    display: flex;
    gap: 16px;
    padding: 24px;
    border-radius: var(--radius-md);
    background: var(--bg-white);
    border: 1px solid var(--border);
    transition: var(--transition);
}
.pain-card:hover {
    border-color: var(--border-dark);
    box-shadow: var(--shadow-sm);
}
.pain-icon {
    font-size: 28px;
    flex-shrink: 0;
    margin-top: 2px;
}
.pain-body h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
}
.pain-quote {
    font-size: 14px;
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: 8px;
    padding-left: 12px;
    border-left: 3px solid var(--border);
}
.pain-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* --- 痛點→解法對照 --- */
.solution-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 900px;
    margin: 0 auto;
}
.solution-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-white);
    border: 1px solid var(--border);
    transition: var(--transition);
}
.solution-row:hover {
    border-color: var(--brand-primary);
    box-shadow: 0 4px 12px rgba(247, 195, 37, 0.1);
}
.solution-pain {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
    font-size: 14px;
    color: var(--text-secondary);
}
.solution-pain-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    color: var(--text-white);
    font-size: 14px;
    flex-shrink: 0;
}
.solution-arrow {
    color: var(--brand-primary);
    font-size: 18px;
    flex-shrink: 0;
}
.solution-answer {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1.5;
    min-width: 0;
}
.solution-answer-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--brand-primary-light);
    color: var(--brand-primary-hover);
    font-size: 16px;
    flex-shrink: 0;
}
.solution-answer strong {
    display: block;
    font-size: 14px;
    color: var(--text-primary);
}
.solution-answer p {
    font-size: 12px;
    color: var(--text-muted);
    margin: 2px 0 0;
}
.solution-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--bg-light);
    color: var(--text-secondary);
    text-decoration: none;
    flex-shrink: 0;
    transition: var(--transition);
}
.solution-link:hover {
    background: var(--brand-primary);
    color: var(--brand-dark);
}

/* --- Before→After 對比 --- */
.transform-grid {
    display: flex;
    gap: 32px;
    align-items: stretch;
    max-width: 800px;
    margin: 0 auto;
}
.transform-col {
    flex: 1;
    padding: 28px 24px;
    border-radius: var(--radius-lg);
}
.transform-before {
    background: #fbe9e7;
    border: 1px solid #ef9a9a;
}
.transform-after {
    background: #e8f5e9;
    border: 1px solid #a5d6a7;
}
.transform-label {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}
.transform-before .transform-label { color: #c62828; }
.transform-after .transform-label { color: #2e7d32; }
.transform-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-primary);
}
.transform-before .transform-item i { color: #e53935; }
.transform-after .transform-item i { color: #43a047; }
.transform-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.transform-divider-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--brand-primary);
    color: var(--brand-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

/* --- 捲動進場動畫 --- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Mega Menu JS 控制 --- */
.nav-dropdown.active .mega-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}
.nav-dropdown.active .nav-dropdown-trigger i {
    transform: rotate(180deg);
}

/* --- 響應式 --- */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-6 { grid-template-columns: repeat(3, 1fr); }
    .mega-menu { min-width: 480px; grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .solution-row { flex-wrap: wrap; }
    .solution-pain, .solution-answer { flex-basis: 100%; }
    .hero h1 { font-size: 2.5rem; }
    .line-section { grid-template-columns: 1fr; }
    .trust-badges { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 48px 0;
        --nav-height: 60px;
    }

    .top-nav { padding: 0 16px; }
    .nav-menu { display: none; }
    .nav-right .btn { display: none; }
    .nav-hamburger { display: block; }

    .hero { padding: 100px 0 48px; }
    .hero h1 { font-size: 2rem; }
    .hero .subtitle { font-size: 1rem; }
    .hero-stats { gap: 24px; }
    .hero-stat .number { font-size: 1.5rem; }
    .hero-cta { flex-direction: column; }
    .hero-cta .btn { width: 100%; }

    .grid-2, .grid-3, .grid-4, .grid-6 { grid-template-columns: 1fr; }
    .pain-grid { grid-template-columns: 1fr; }
    .solution-row { flex-direction: column; text-align: center; }
    .solution-pain { justify-content: center; }
    .solution-answer { justify-content: center; flex-direction: column; }
    .solution-arrow { transform: rotate(90deg); }
    .transform-grid { flex-direction: column; }
    .transform-divider { padding: 8px 0; }
    .transform-divider-icon i { transform: rotate(90deg); }

    .section-header h2 { font-size: 1.5rem; }
    .section-header p { font-size: 0.95rem; }
    .section-title { font-size: 1.5rem; }
    .section-subtitle { font-size: 0.95rem; margin-bottom: 32px; }

    .hero-subtitle { font-size: 1.1rem; }
    .hero-desc { font-size: 0.9rem; }

    .trust-badges { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .trust-badge { padding: 16px 12px; }

    .line-section { grid-template-columns: 1fr; text-align: center; }
    .line-mockup { order: -1; }
    .line-features-mini { align-items: center; }
    .line-feature-item { text-align: left; }

    .cta-section h2 { font-size: 1.4rem; }
    .cta-buttons { flex-direction: column; align-items: center; }
    .cta-buttons .btn { width: 100%; max-width: 300px; }

    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .stats-bar { gap: 24px; }
    .stat-item .stat-number { font-size: 2rem; }

    .page-hero { padding: 90px 0 40px; }
    .page-hero h1 { font-size: 1.75rem; }

    .container { padding: 0 16px; }
}