/* ============================================================
   程式介紹頁共用樣式（content.css）
   引用者：trtc / tmrt / bus / tra 四頁，於 common.css 之後載入。
   首頁與 404 不載入本檔——首頁的 .download-button 是另一套尺寸，
   寫在 index.php 自身的 <style>，兩者互不影響。
   ============================================================ */

.content-card {
    background-color: rgba(255, 255, 255, 0.93);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 30px;
}
.content-card h2 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.8rem;
    border-bottom: 2px solid #3498db;
    padding-bottom: 10px;
}
.content-card p {
    color: #666;
    margin-bottom: 15px;
    font-size: 1.2rem;
}
.feature-list {
    list-style-type: none;
    padding-left: 20px;
}
.feature-list li {
    color: #666;
    margin-bottom: 10px;
    font-size: 1.2rem;
    position: relative;
    padding-left: 25px;
}
.feature-list li:before {
    content: "✓";
    color: #3498db;
    position: absolute;
    left: 0;
}
/* 操作說明的有序步驟清單（沿用瀏覽器編號） */
.step-list {
    color: #666;
    font-size: 1.2rem;
    padding-left: 30px;
}
.step-list li {
    margin-bottom: 10px;
}
/* 程式畫面截圖與圖說 */
.screenshot {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto 8px;
    border: 1px solid #ccc;
    border-radius: 8px;
}
.screenshot-caption {
    text-align: center;
    color: #666;
    margin-bottom: 25px;
}
/* 版權宣告：段落內文縮至與素材來源清單同級（1.1rem），比一般內文小一號 */
.license-card p {
    font-size: 1.1rem;
}
/* 版權宣告的素材來源清單（無符號、留行距） */
.credit-list {
    list-style-type: none;
    padding-left: 0;
}
.credit-list li {
    color: #666;
    margin-bottom: 12px;
    font-size: 1.1rem;
    overflow-wrap: break-word;
}
.download-section {
    text-align: center;
    margin-top: 40px;
}
.download-button {
    display: inline-block;
    background-color: #3498db;
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 8px;
    transition: background-color 0.3s;
    font-weight: bold;
    font-size: 1.3rem;
}
.download-button:hover {
    background-color: #2980b9;
}
.download-button:focus-visible {
    outline: 3px solid #ffd54a;
    outline-offset: 3px;
}
.version-info {
    color: white;
    margin-top: 15px;
    font-size: 1.1rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

/* ---- 手機版（.main-content／.container 的手機版在 common.css）---- */
@media (max-width: 600px) {
    .page-title {
        margin-bottom: 24px;
        font-size: 2rem;
        line-height: 1.3;
    }
    .content-card {
        padding: 20px 18px;
        margin-bottom: 20px;
    }
    .content-card h2 {
        margin-bottom: 16px;
        font-size: 1.5rem;
        line-height: 1.35;
    }
    .content-card p,
    .feature-list li,
    .step-list li {
        font-size: 1.05rem;
    }
    .feature-list {
        padding-left: 0;
    }
    .step-list {
        padding-left: 22px;
    }
    .credit-list li {
        font-size: 1rem;
    }
    .download-section {
        margin-top: 28px;
    }
    .download-button {
        padding: 12px 24px;
        font-size: 1.1rem;
    }
    .version-info {
        display: block;
        width: fit-content;
        margin: 15px auto 0;
        padding: 6px 10px;
        border-radius: 6px;
        font-size: 1rem;
    }
}
@media (prefers-reduced-motion: reduce) {
    .download-button {
        transition: none;
    }
}