/* --- 1. 核心設定 --- */
:root {
    --brand-blue: #1736F5;
    --brand-dark: #0b1a7a;
    --accent-yellow: #FFC709;
    --text-dark: #333333;
}

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

body {
    background-color: var(--brand-blue);
    background-image: radial-gradient(circle at 50% 10%, #4c6aff 0%, var(--brand-blue) 40%, var(--brand-dark) 100%);
    /* 預設字體 */
    font-family: 'PingFang TC', 'Microsoft JhengHei', sans-serif;
    min-height: 100vh;
    padding: 40px 20px 120px 20px;
    display: flex;
    justify-content: center;
    color: #fff;
}

.container {
    width: 100%;
    max-width: 1100px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* --- 2. 標題區 (透明度 0.8) --- */
.header-card {
    grid-column: span 3;
    background: rgba(255, 255, 255, 1);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 30px;
    padding: 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

/* [修改] H1 大標題設定 */
.header-content h1 { 
    /* 指定特粗黑體 */
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 900;
    
    font-size: 3rem; 
    margin-bottom: 10px; 
    color: var(--brand-blue); 
    /* 讓 icon 與文字垂直置中 */
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px; /* Icon 與文字的間距 */
}

.header-content p { 
    font-size: 1.2rem; 
    color: #333; 
    font-weight: 600;
}

.header-tag {
    background: var(--accent-yellow);
    color: var(--brand-blue);
    font-weight: 900;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.85rem;
    display: inline-block;
    margin-bottom: 15px;
}

/* --- 3. 方案卡片 (透明度 0.7) --- */
.plan-card {
    grid-column: span 1;
    background: rgba(222, 222, 222, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: 30px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    position: relative;
}

.plan-card:hover {
    background: rgba(222, 222, 222, 1);
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    z-index: 10;
}

.plan-header {
    border-bottom: 1px solid rgba(0,0,0,0.1);
    padding-bottom: 15px;
    margin-bottom: 20px;
}

/* [修改] 方案標題 (基本款/進階款...) */
.plan-title {
    /* 指定特粗黑體 */
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 900;
    
    font-size: 1.8rem;
    color: var(--brand-blue);
    margin-bottom: 5px;
}

.plan-subtitle {
    font-size: 1rem;
    color: #555;
    font-weight: bold;
}

.plan-target {
    background: rgba(23, 54, 245, 1);
    color: #FFFFFF;
    padding: 10px;
    border-radius: 10px;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 20px;
}

.plan-features {
    list-style: none;
    margin-bottom: 20px;
    flex-grow: 1;
}

.plan-features li {
    margin-bottom: 12px;
    color: #333;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 199, 9, 0.8);
    padding: 8px 15px;
    border-radius: 50px;
}

.plan-features li i { color: var(--brand-blue); }

.note-box {
    font-size: 0.8rem;
    color: #666;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px dashed rgba(0,0,0,0.2);
    line-height: 1.4;
}

.cta-btn {
    background: var(--brand-blue);
    color: #fff;
    text-align: center;
    padding: 12px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: 0.3s;
    margin-top: 15px;
    box-shadow: 0 5px 15px rgba(23, 54, 245, 0.3);
}
.cta-btn:hover { background: var(--accent-yellow); color: var(--brand-blue); }

/* --- 4. 客製化方案 (橫跨全寬) --- */
.custom-card {
    grid-column: span 3;
    background: linear-gradient(135deg, rgba(255, 199, 9, 0.9), rgba(255, 220, 90, 0.9));
    color: #333;
    border-radius: 30px;
    padding: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

/* [修改] 客製款標題 */
.custom-content h2 { 
    /* 指定特粗黑體 */
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 900;
    
    font-size: 2.2rem; 
    margin-bottom: 10px; 
    color: var(--brand-blue); 
}
.custom-content p { font-size: 1.1rem; max-width: 600px; line-height: 1.6; }

.custom-price {
    text-align: right;
    background: #fff;
    padding: 20px 30px;
    border-radius: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* --- 5. 導覽列 --- */
.dock-nav {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255,255,255,0.25);
    backdrop-filter: blur(20px);
    padding: 15px 30px;
    border-radius: 50px;
    display: flex;
    gap: 20px;
    border: 1px solid rgba(255,255,255,0.4);
    z-index: 100;
}
.dock-nav a { text-decoration: none; color: #fff; font-weight: bold; transition: 0.2s; }
.dock-nav a:hover { color: var(--accent-yellow); transform: translateY(-3px); }

/* RWD */
@media (max-width: 900px) {
    .container { grid-template-columns: 1fr; }
    .header-card, .plan-card, .custom-card { grid-column: span 1; }
    .custom-card { flex-direction: column; text-align: left; gap: 20px; align-items: flex-start; }
    .custom-price { width: 100%; text-align: center; }
    .dock-nav { 
        width: 90%; 
        justify-content: space-between; 
        padding: 12px 20px; 
        gap: 10px;
        bottom: 20px;
    }
    .dock-nav a { font-size: 0.85rem; }
    
    /* 手機版標題調整 */
    .header-content h1 { font-size: 2.2rem; flex-direction: column; gap: 10px; }
}