/* ==========================================
   1. 品牌視覺色彩與全域基礎佈局
   ========================================== */
:root {
    --bg-gradient: linear-gradient(135deg, #021a36 0%, #063d6b 50%, #095991 100%);
    --navbar-bg: #01162e;
    --teal-light: #00e5ff;
    --btn-gradient: linear-gradient(135deg, #00b4db 0%, #0083b0 100%);
    --text-white: #ffffff;
    --text-light-gray: #b0c4de;
    --card-bg: #ffffff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    background: var(--bg-gradient);
    color: var(--text-white);
    min-height: 100vh;
    -webkit-text-size-adjust: 100%;
}
a { text-decoration: none; color: inherit; }
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 按鈕與標籤 */
.badge {
    display: inline-block;
    border: 1px solid var(--teal-light);
    color: var(--teal-light);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    background: rgba(0, 229, 255, 0.05);
    letter-spacing: 1px;
}
.btn {
    display: inline-block;
    background: var(--btn-gradient);
    color: #fff;
    padding: 14px 36px;
    border-radius: 30px;
    font-weight: 600;
    margin-top: 24px;
    box-shadow: 0 4px 15px rgba(0, 180, 219, 0.4);
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-align: center;
}
.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 180, 219, 0.6);
}

/* ==========================================
   2. 導覽列與網頁頁尾
   ========================================== */
header {
    background-color: var(--navbar-bg);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}
.logo { font-size: 1.5rem; font-weight: 700; color: var(--text-white); }
.logo span { color: var(--teal-light); }
.nav-menu { display: flex; list-style: none; gap: 32px; font-weight: 500; }
.nav-menu a { color: var(--text-light-gray); transition: color 0.3s; padding-bottom: 5px; }
.nav-menu a:hover, .nav-menu a.active { color: var(--teal-light); border-bottom: 2px solid var(--teal-light); }

/* 漢堡選單按鈕（電腦版隱藏） */
.menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.menu-toggle span { width: 25px; height: 3px; background-color: #fff; transition: 0.3s; }

/* 區塊通用 */
section { padding: 80px 0; }
.section-title { font-size: 2.6rem; font-weight: 700; line-height: 1.4; margin-bottom: 24px; }
/*.section-desc { color: var(--text-light-gray); font-size: 1.1rem; max-width: 650px; }*/
.section-desc { color: var(--text-light-gray); font-size: 1.1rem; max-width: 650px; text-align: justify; margin: 0 auto; }



/* 頁尾樣式 */
footer {
    background-color: #011226;
    color: var(--text-light-gray);
    padding: 60px 0 30px 0;
    font-size: 0.95rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.footer-content { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 40px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); padding-bottom: 40px; margin-bottom: 30px; }
.footer-info h3 { color: #ffffff; margin-bottom: 15px; font-size: 1.25rem; font-weight: 700; }
.footer-info h3 span { color: var(--teal-light); }
.footer-info p { margin-bottom: 8px; line-height: 1.6; }
.footer-meta { text-align: left; }
.footer-meta p { margin-bottom: 8px; line-height: 1.6; }
.copyright { text-align: center; color: #64748b; font-size: 0.85rem; margin-top: 10px; }

/* ==========================================
   3. 各頁面獨立排版架構 (電腦版)
   ========================================== */
/* 首頁自動輪播結構（全新防擠壓解耦架構） */
.slider-container { width: 100%; position: relative; overflow: hidden; background: rgba(1, 22, 46, 0.3); border-bottom: 1px solid rgba(255, 255, 255, 0.05); }
.slide { width: 100%; display: none; }
.slide.active { display: block; animation: slideFade 0.5s ease-in-out; }
.hero-block { display: flex; align-items: center; gap: 50px; padding: 40px 24px 80px 24px; }
.hero-text { flex: 1.2; text-align: left; }

/*.hero-media { flex: 0.8; width: 100%; height: 380px; border-radius: 20px; overflow: hidden; position: relative; box-shadow: 0 15px 35px rgba(0,0,0,0.4); border: 1px solid rgba(255,255,255,0.1); background: #000; }*/
/*.hero-media video, .hero-media img { width: 100%; height: 100%; object-fit: cover; display: block; }*/
/*.hero-media video, .hero-media img { width: 100%; height: 100%; object-fit: contain; display: block; }*/

/* 修正後的 16:9 黃金長方形比例容器（已完美注入頂級黑底，徹底消滅藍色透光邊框） */
.hero-media { 
    flex: 0.8; 
    width: 100%; 
    aspect-ratio: 16 / 9; /* 強制轉換為標準 16:9 長方形比例 */
    border-radius: 12px; 
    overflow: hidden; 
    position: relative; 
    box-shadow: 0 15px 35px rgba(0,0,0,0.4); 
    border: 1px solid rgba(255,255,255,0.1); 
    background: #000000; /* 關鍵修正：強制使用純黑色背景襯托媒體檔案 */
}

/* Slide 1 的 MP4 影片：完美滿版填滿 16:9 長方形 */
.hero-media video { 
    width: 100%; 
    height: 100%; 
    object-fit: cover; 
    display: block; 
}

/* Slide 2 的 PPT 圖片：100% 完整包含在 16:9 內，兩側由黑底無縫融合 */
.hero-media img { 
    width: 100%; 
    height: 100%; 
    object-fit: contain; 
    display: block; 
}


/* 幻燈片指示圓點 */
.slider-dots { position: absolute; bottom: 25px; left: 50%; transform: translateX(-50%); display: flex; gap: 12px; z-index: 10; }
.dot { width: 12px; height: 12px; border-radius: 50%; background: rgba(255, 255, 255, 0.3); cursor: pointer; transition: all 0.3s; }
.dot.active { background: var(--teal-light); width: 28px; border-radius: 6px; }

/* 首頁三大亮點卡片 */
.features-grid { display: flex; gap: 30px; margin-top: -40px; position: relative; z-index: 20; }
.feature-card { flex: 1; background: var(--card-bg); padding: 40px 30px; border-radius: 16px; color: #1a202c; box-shadow: 0 10px 30px rgba(0,0,0,0.15); transition: transform 0.3s; }
.feature-card:hover { transform: translateY(-5px); }
.feature-card h3 { margin-bottom: 16px; font-size: 1.3rem; color: #021a36; display: flex; align-items: center; gap: 8px; font-weight: 700; }
.feature-card p { color: #4a5568; font-size: 0.95rem; text-align: justify; line-height: 1.6; }

/* 核心技術頁矩陣 */
.tech-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; margin-top: 50px; }
.tech-card { background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.08); padding: 45px; border-radius: 16px; position: relative; transition: all 0.3s; overflow: hidden; }
.tech-card:hover { transform: translateY(-5px); border-color: rgba(0, 229, 255, 0.3); box-shadow: 0 15px 35px rgba(0,0,0,0.2); }
.tech-card::before { content: ""; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--teal-light); }
.tech-icon { font-size: 2.5rem; margin-bottom: 20px; display: inline-block; }
.tech-card h3 { font-size: 1.5rem; color: var(--teal-light); margin-bottom: 15px; font-weight: 700; }
.tech-card p { color: var(--text-light-gray); text-align: justify; }

/* 關於我們頁 */
.about-content { max-width: 850px; margin: 0 auto; }
.about-p { font-size: 1.15rem; margin-bottom: 24px; color: var(--text-light-gray); text-align: justify; line-height: 1.8; }
.mission-box { background: rgba(1, 22, 46, 0.4); padding: 40px; border-radius: 12px; border-left: 5px solid var(--teal-light); margin: 40px 0; }
.mission-box h3 { color: var(--teal-light); margin-bottom: 12px; font-size: 1.4rem; font-weight: 700; }
.mission-box p { color: #ffffff; font-size: 1.05rem; }

/* 聯絡我們表單 */
.form-container { max-width: 650px; margin: 40px auto 0 auto; background: rgba(255,255,255,0.03); padding: 45px; border-radius: 16px; border: 1px solid rgba(255,255,255,0.08); box-shadow: 0 20px 40px rgba(0,0,0,0.2); }
.form-group { margin-bottom: 24px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 600; color: var(--text-light-gray); }
.form-control { width: 100%; padding: 14px 16px; background: rgba(1, 22, 46, 0.6); border: 1px solid rgba(255,255,255,0.15); border-radius: 8px; color: #fff; font-size: 1rem; transition: border-color 0.3s; }
.form-control:focus { border-color: var(--teal-light); outline: none; box-shadow: 0 0 10px rgba(0, 229, 255, 0.2); }
select.form-control option { background: #01162e; color: #fff; }
textarea.form-control { resize: vertical; }

@keyframes slideFade { from { opacity: 0; } to { opacity: 1; } }

/* ==========================================
   4. 【核心關鍵】手機版的媒體查詢(RWD) 雙端完美相容媒體查詢
   ========================================== */
@media (max-width: 992px) {
    .section-title { font-size: 2.2rem; }
    .features-grid { gap: 20px; padding: 0 10px; }
    .feature-card { padding: 30px 20px; }
}

@media (max-width: 768px) {
    .container { padding: 0 20px; }
    section { padding: 60px 0; }
    .section-title { font-size: 1.9rem; text-align: left; }
    /*.section-desc { text-align: center; margin: 0 auto; font-size: 1rem; }*/
	.section-desc { 
    text-align: justify; 
    text-justify: inter-ideograph; /* 更適合中英文混排的對齊模式 */
    word-break: break-word;        /* 允許長英文單字內自動換行，防止撐開字距 */
    word-wrap: break-word;         /* 相容舊版瀏覽器 */
    hyphens: auto;                 /* 自動在適當地方加入英文連字號（如將 Scattering 變成 Scat-tering） */
    margin: 0 auto; 
    font-size: 1rem; 
    max-width: 650px; 
	}
    
    /* 手機版漢堡選單滑出 */
    .menu-toggle { display: flex; }
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: var(--navbar-bg);
        padding: 24px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.4);
        border-bottom: 1px solid rgba(255,255,255,0.08);
        gap: 20px;
        text-align: center;
        z-index: 999;
    }
    .nav-menu.active { display: flex; }
    .nav-menu a { font-size: 1.05rem; display: block; padding: 10px 0; }
    .nav-menu a:hover, .nav-menu a.active { border-bottom: none; color: var(--teal-light); }

    /* 手機版垂直堆疊排版 */
    .hero-block { flex-direction: column; gap: 35px; text-align: center; padding: 40px 20px 60px 20px; }
    .hero-text { width: 100%; }
    .hero-media { width: 100%; max-width: 420px; height: 260px; margin: 0 auto; }
    
    .features-grid { display: flex; flex-direction: column; gap: 20px; margin-top: 30px; padding: 0; }
    .tech-grid, .footer-content { display: flex; flex-direction: column; gap: 20px; }

    .feature-card, .tech-card { width: 100%; padding: 30px 20px; }
    .form-container { padding: 30px 20px; }
    .btn { width: 100%; text-align: center; }
    
    .footer-meta { text-align: left; }
}

/* ==========================================
   5. 【全新安全防護】全域防選取、防拖曳、防點擊
   ========================================== */

/* 防止網頁任何文字與內容被框選反白 */
body {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* 額外禁止全站圖片被鼠標拖曳拉走 */
img {
    -webkit-user-drag: none;
}

/* 關鍵核心：將多媒體容器設定為禁止滑鼠事件 */
/* 這會讓滑鼠無法與影片、圖片產生互動，徹底封鎖「右鍵另存」或「手機長按儲存」的可能性 */
.hero-media, 
.hero-media video, 
.hero-media img {
    pointer-events: none;
    -webkit-touch-callout: none; /* 禁用 iOS Safari 的長按彈出選單 */
}