:root {
    --primary-gold: #C5A059;
    --bg-warm-white: #F9F7F2;
    --text-navy: #2C3E50;
    --card-bg: #ffffff;
    --accent-red: #e74c3c;
}

body {
    background-color: var(--bg-warm-white);
    color: var(--text-navy);
    font-family: 'Noto Sans TC', sans-serif;
    margin: 0;
    line-height: 1.6;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: var(--card-bg);
    border-bottom: 2px solid var(--primary-gold);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

header h1 { margin: 0; font-size: 1.5rem; color: var(--primary-gold); }

nav a {
    text-decoration: none;
    color: var(--text-navy);
    margin-left: 20px;
    font-weight: 500;
}

.hero {
    margin: 20px 0 40px 0;
}

.greeting-box {
    background: var(--primary-gold);
    color: white;
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 25px;
    font-size: 1.1rem;
    box-shadow: 0 4px 15px rgba(197, 160, 89, 0.3);
    border-left: 8px solid #b38f4d;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    border-radius: 12px;
    overflow: hidden;
    background: #000;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

h2 {
    border-bottom: 2px solid var(--primary-gold);
    display: inline-block;
    padding-bottom: 5px;
    margin-bottom: 20px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    border-left: 5px solid var(--primary-gold);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.qa-section {
    margin-top: 60px;
    background: #fff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.qa-box {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

#qa-input {
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
}

#qa-input:focus {
    outline: none;
    border-color: var(--primary-gold);
}

button {
    background: var(--primary-gold);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s;
}

button:hover {
    background: #b38f4d;
}

#qa-response {
    margin-top: 20px;
    padding: 20px;
    background: #fdfaf5;
    border-radius: 8px;
    min-height: 50px;
    line-height: 1.8;
}