:root { 
    --primary: #F38120; 
    --primary-hover: #E67610;
    --bg: #FFF9F5; 
    --card: #FFFFFF; 
    --text-dark: #4A2B20;
    --text-gray: #7D6B64;
}

body { 
    font-family: 'Noto Sans TC', sans-serif; 
    background-color: var(--bg); 
    margin: 0; 
    padding: 20px; 
    color: var(--text-dark); 
    line-height: 1.6;
}

.container { 
    max-width: 500px; 
    margin: 20px auto; 
    background: var(--card); 
    padding: 40px 32px; 
    border-radius: 32px; 
    box-shadow: 0 20px 40px rgba(74, 43, 32, 0.08); 
    border: 1px solid #FFEDDE;
}

.logo-area { text-align: center; margin-bottom: 24px; }
.logo-icon { 
    width: 100px; 
    height: 100px; 
    border-radius: 24px; 
    display: inline-block;
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}
.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

h1 { font-weight: 700; text-align: center; margin: 0 0 8px 0; font-size: 24px; color: var(--text-dark); }
.subtitle { text-align: center; color: var(--text-gray); margin-bottom: 32px; font-size: 14px; }

.tabs {
    display: flex;
    background: #F2F2F7;
    padding: 4px;
    border-radius: 14px;
    margin-bottom: 32px;
}
.tab-btn {
    flex: 1;
    padding: 10px;
    border: none;
    background: none;
    font-weight: 600;
    color: var(--text-gray);
    cursor: pointer;
    border-radius: 10px;
    transition: all 0.2s;
}
.tab-btn.active {
    background: var(--card);
    color: var(--primary);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

.file-info { 
    background: #FFF9F5; 
    padding: 20px; 
    border-radius: 18px; 
    border: 1px dashed #FFD6B1; 
    margin-bottom: 32px; 
    text-align: center; 
}
.file-label { font-size: 13px; color: var(--text-gray); display: block; margin-bottom: 4px; }
.file-name { font-weight: 700; color: var(--primary); font-size: 18px; }

.btn { 
    background: var(--primary); 
    color: white; 
    border: none; 
    padding: 20px; 
    border-radius: 20px; 
    font-size: 18px; 
    font-weight: 700; 
    cursor: pointer; 
    width: 100%; 
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    box-sizing: border-box;
    box-shadow: 0 8px 20px rgba(243, 129, 32, 0.25);
}

.dot-card {
    background: #FDF1E6;
    padding: 24px;
    border-radius: 20px;
    border: 2px solid var(--primary);
    text-align: center;
    margin-bottom: 24px;
}
.dot-value {
    font-family: monospace;
    font-size: 18px;
    color: var(--primary);
    font-weight: 700;
    word-break: break-all;
    margin: 10px 0;
    display: block;
}

.guide { margin-top: 32px; padding-top: 24px; border-top: 1.5px solid #FFF0E2; }
.guide h3 { font-size: 18px; margin-bottom: 20px; color: var(--text-dark); display: flex; align-items: center; }
.guide h3::before { content: ''; width: 4px; height: 18px; background: var(--primary); margin-right: 12px; border-radius: 2px; }

.step { display: flex; align-items: flex-start; margin-bottom: 20px; }
.step-num { 
    background: #FFF0E2; color: var(--primary); width: 28px; height: 28px; border-radius: 8px; 
    display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; margin-right: 14px; flex-shrink: 0; 
}
.step-text { font-size: 15px; color: var(--text-gray); }
.important { color: var(--primary); font-weight: 700; }

.footer-note { text-align: center; margin-top: 32px; font-size: 12px; color: #A0908A; }