@charset "UTF-8";
/* ============================================================
   三久太陽能 - 認識太陽能熱水器頁 (s39-solar-intro)
   需搭配 nav-footer.css 一起使用
   ============================================================ */

/* ============================================================
   頁面主標題 (與 about 頁面同風格 - 高度 200px)
   ============================================================ */
.s39-solar-hero {
    background: linear-gradient(135deg, #3a8fd4 0%, #6bb0e8 100%);
    color: white;
    padding: 0;
    height: 200px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.s39-solar-hero::after {
    
    font-size: 160px;
    opacity: 0.06;
    position: absolute;
    right: -10px;
    bottom: -20px;
    transform: rotate(12deg);
}

.s39-solar-hero .s39-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
    width: 100%;
}

.s39-solar-hero .s39-hero-text {
    flex: 1 1 50%;
}

.s39-solar-hero .s39-hero-text h1 {
    font-size: 48px;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 4px;
    line-height: 1.2;
}

.s39-solar-hero .s39-breadcrumb {
    color: rgba(255, 255, 255, 0.85);
    font-size: 22px;
}

.s39-solar-hero .s39-breadcrumb a {
    color: #ffe484;
    text-decoration: none;
    transition: color 0.2s;
}

.s39-solar-hero .s39-breadcrumb a:hover {
    text-decoration: underline;
    color: #ffffff;
}

.s39-solar-hero .s39-hero-image {
    flex: 1 1 40%;
    text-align: center;
}

.s39-solar-hero .s39-hero-image img {
    max-width: 85%;
    height: auto;
    max-height: 210px;
    display: block;
    background: transparent;
    margin: 0 auto;
}

/* ----- 內容區塊 ----- */
.s39-solar-section {
    padding: 50px 0;
    background: #ffffff;
}

.s39-solar-section.s39-bg-sky {
    background: #e8f2fc;
}

.s39-solar-section .s39-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ----- 區塊標題 ----- */
.s39-solar-section .s39-section-title {
    font-size: 38px;
    font-weight: 700;
    color: #1a5a96;
    margin-bottom: 6px;
}

.s39-solar-section .s39-section-divider {
    width: 60px;
    height: 3px;
    background: #6bb0e8;
    margin: 8px 0 20px 0;
}

.s39-solar-section .s39-section-divider.s39-center {
    margin: 8px auto 20px auto;
}

.s39-solar-section .s39-section-sub {
    color: #4a6a8a;
    font-size: 22px;
    margin-bottom: 24px;
}

/* ----- 主視覺 Banner ----- */
.s39-solar-banner {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(43, 123, 201, 0.10);
    margin-bottom: 30px;
}

.s39-solar-banner img {
    width: 100%;
    height: auto;
    display: block;
}

/* ----- 特色區塊 (三大項) ----- */
.s39-solar-feature {
    margin-bottom: 40px;
}

.s39-solar-feature:last-child {
    margin-bottom: 0;
}

.s39-solar-feature .s39-feature-head {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
}

.s39-solar-feature .s39-feature-head .s39-num {
    background: #2b7bc9;
    color: #ffffff;
    font-size: 24px;
    font-weight: 700;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.s39-solar-feature .s39-feature-head h2 {
    font-size: 34px;
    font-weight: 700;
    color: #1a5a96;
}

.s39-solar-feature .s39-feature-head h2 i {
    color: #2b7bc9;
    margin-right: 10px;
}

.s39-solar-feature .s39-feature-banner {
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 16px;
    box-shadow: 0 2px 12px rgba(43, 123, 201, 0.06);
}

.s39-solar-feature .s39-feature-banner img {
    width: 100%;
    height: auto;
    display: block;
}

/* ----- 特色內文列表 ----- */
.s39-solar-feature .s39-feature-content {
    background: #f5faff;
    border-radius: 16px;
    padding: 28px 32px;
    border: 1px solid #dce8f5;
}

.s39-solar-feature .s39-feature-content p {
    font-size: 22px;
    color: #1e2a4a;
    line-height: 1.9;
    margin-bottom: 8px;
}

.s39-solar-feature .s39-feature-content p:last-child {
    margin-bottom: 0;
}

.s39-solar-feature .s39-feature-content .s39-bold {
    font-weight: 600;
    color: #1a5a96;
}

.s39-solar-feature .s39-feature-content ul {
    list-style: none;
    padding: 0;
    margin: 6px 0 0 0;
}

.s39-solar-feature .s39-feature-content ul li {
    font-size: 21px;
    color: #1e2a4a;
    line-height: 1.8;
    padding: 4px 0 4px 30px;
    position: relative;
}

.s39-solar-feature .s39-feature-content ul li::before {
    content: "◆";
    color: #2b7bc9;
    font-size: 16px;
    position: absolute;
    left: 4px;
    top: 4px;
}

/* ============================================================
   三層保溫 (三個小圖) - 文字加大版
   ============================================================ */
.s39-insulation-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin: 16px 0;
}

.s39-insulation-grid .s39-insulation-item {
    background: #ffffff;
    border-radius: 16px;
    padding: 28px 22px;
    text-align: center;
    border: 1px solid #dce8f5;
    transition: transform 0.2s, box-shadow 0.2s;
}

.s39-insulation-grid .s39-insulation-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(43, 123, 201, 0.10);
}

.s39-insulation-grid .s39-insulation-item img {
    width: 100%;
    max-width: 280px;
    height: auto;
    margin-bottom: 12px;
}

.s39-insulation-grid .s39-insulation-item .s39-step {
    display: inline-block;
    background: #2b7bc9;
    color: #ffffff;
    font-size: 18px;
    font-weight: 700;
    padding: 4px 20px;
    border-radius: 20px;
    margin-bottom: 10px;
}

.s39-insulation-grid .s39-insulation-item h5 {
    font-size: 25px;
    font-weight: 700;
    color: #1a5a96;
    margin-bottom: 6px;
}

.s39-insulation-grid .s39-insulation-item p {
    font-size: 20px;
    color: #4a6a8a;
    line-height: 1.7;
}

/* ============================================================
   直上直下設計比較
   ============================================================ */
.s39-compare-title {
    text-align: center;
    font-size: 30px;
    font-weight: 700;
    color: #1a5a96;
    margin: 24px 0 6px 0;
    padding: 16px 24px;
    background: #e8f2fc;
    border-radius: 12px;
    border: 2px solid #6bb0e8;
}

.s39-compare-title i {
    color: #2b7bc9;
    margin-right: 12px;
}

.s39-compare-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin: 16px 0 0 0;
}

.s39-compare-wrap .s39-compare-item {
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid #dce8f5;
    background: #ffffff;
    transition: transform 0.2s, box-shadow 0.2s;
}

.s39-compare-wrap .s39-compare-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(43, 123, 201, 0.12);
}

.s39-compare-wrap .s39-compare-item .s39-compare-image {
    overflow: hidden;
    background: #f5faff;
}

.s39-compare-wrap .s39-compare-item .s39-compare-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s;
}

.s39-compare-wrap .s39-compare-item:hover .s39-compare-image img {
    transform: scale(1.02);
}

.s39-compare-wrap .s39-compare-item .s39-compare-label {
    padding: 18px 22px;
    text-align: center;
    font-size: 22px;
    font-weight: 500;
    line-height: 1.7;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px 12px;
}

.s39-compare-wrap .s39-compare-item.s39-good {
    border-color: #2b7bc9;
}

.s39-compare-wrap .s39-compare-item.s39-good .s39-compare-label {
    color: #1a5a96;
    background: #e8f2fc;
}

.s39-compare-wrap .s39-compare-item.s39-bad {
    border-color: #d9534f;
}

.s39-compare-wrap .s39-compare-item.s39-bad .s39-compare-label {
    color: #8a2a2a;
    background: #fde8e8;
}

.s39-compare-wrap .s39-badge {
    display: inline-block;
    font-weight: 700;
    font-size: 20px;
    padding: 4px 16px;
    border-radius: 20px;
    white-space: nowrap;
}

.s39-compare-wrap .s39-badge-good {
    background: #2b7bc9;
    color: #ffffff;
}

.s39-compare-wrap .s39-badge-bad {
    background: #d9534f;
    color: #ffffff;
}

/* ============================================================
   微電腦控制系統 (功能列表) - 文字加大版
   ============================================================ */
.s39-control-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    margin: 16px 0;
}

.s39-control-grid .s39-control-item {
    background: #ffffff;
    border-radius: 14px;
    padding: 24px 20px;
    border: 1px solid #dce8f5;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

.s39-control-grid .s39-control-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(43, 123, 201, 0.10);
}

.s39-control-grid .s39-control-item .s39-ctrl-icon {
    font-size: 38px;
    color: #2b7bc9;
    margin-bottom: 8px;
}

.s39-control-grid .s39-control-item h5 {
    font-size: 24px;
    font-weight: 700;
    color: #1a5a96;
    margin-bottom: 6px;
}

.s39-control-grid .s39-control-item p {
    font-size: 20px;
    color: #4a6a8a;
    line-height: 1.6;
}

/* ----- 安全設計 (八項) ----- */
.s39-safety-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin: 12px 0;
}

.s39-safety-grid .s39-safety-item {
    background: #ffffff;
    border-radius: 10px;
    padding: 16px 14px;
    text-align: center;
    border: 1px solid #dce8f5;
    font-size: 18px;
    font-weight: 500;
    color: #1a5a96;
    transition: transform 0.2s, box-shadow 0.2s;
}

.s39-safety-grid .s39-safety-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(43, 123, 201, 0.08);
}

.s39-safety-grid .s39-safety-item .s39-safety-num {
    display: block;
    font-size: 14px;
    color: #6a8aaa;
    font-weight: 400;
}

/* ----- APP 功能 (三個圓形圖示) ----- */
.s39-app-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin: 16px 0;
}

.s39-app-grid .s39-app-item {
    background: #ffffff;
    border-radius: 16px;
    padding: 24px 18px;
    text-align: center;
    border: 1px solid #dce8f5;
    transition: transform 0.2s, box-shadow 0.2s;
}

.s39-app-grid .s39-app-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(43, 123, 201, 0.10);
}

.s39-app-grid .s39-app-item img {
    width: 100%;
    max-width: 286px;
    height: auto;
    margin-bottom: 10px;
}

.s39-app-grid .s39-app-item h5 {
    font-size: 22px;
    font-weight: 600;
    color: #1a5a96;
    margin-bottom: 4px;
}

.s39-app-grid .s39-app-item p {
    font-size: 18px;
    color: #4a6a8a;
    line-height: 1.6;
}

/* ----- APP 功能清單 (內文) ----- */
.s39-app-features {
    background: #f5faff;
    border-radius: 16px;
    padding: 24px 28px;
    border: 1px solid #dce8f5;
    margin: 16px 0;
}

.s39-app-features ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px 20px;
}

.s39-app-features ul li {
    font-size: 20px;
    color: #1e2a4a;
    line-height: 1.8;
    padding: 3px 0 3px 26px;
    position: relative;
}

.s39-app-features ul li::before {
    content: "✓";
    color: #2b7bc9;
    font-weight: 700;
    position: absolute;
    left: 2px;
    top: 3px;
}

/* ----- 註腳 (免責聲明) ----- */
.s39-solar-footnote {
    font-size: 20px;
    color: #2a3a4a;
    line-height: 1.9;
    margin-top: 20px;
    padding: 24px 30px;
    background: #edf3fa;
    border-radius: 12px;
    border: 1px solid #c8d8e8;
}

.s39-solar-footnote p {
    margin-bottom: 6px;
}

.s39-solar-footnote p:last-child {
    margin-bottom: 0;
}

/* ============================================================
   響應式設計 (RWD) - 完整整合版
   ============================================================ */

/* ----- 平板 (max-width: 992px) ----- */
@media (max-width: 992px) {
    /* 頁面標題 */
    .s39-solar-hero {
        height: 180px;
    }

    .s39-solar-hero .s39-hero-text h1 {
        font-size: 36px;
    }

    .s39-solar-hero .s39-breadcrumb {
        font-size: 18px;
    }

    .s39-solar-hero .s39-hero-image {
        flex: 1 1 100%;
        text-align: center;
    }

    .s39-solar-hero .s39-hero-image img {
        max-width: 55%;
        max-height: 120px;
        transform: none;
    }

    .s39-solar-hero .s39-hero-text {
        transform: translateY(-30px);
    }

    /* 區塊標題 */
    .s39-solar-section .s39-section-title {
        font-size: 32px;
    }
    .s39-solar-section .s39-section-sub {
        font-size: 20px;
    }

    /* 特色區塊 */
    .s39-solar-feature .s39-feature-head h2 {
        font-size: 30px;
    }
    .s39-solar-feature .s39-feature-content p {
        font-size: 20px;
    }
    .s39-solar-feature .s39-feature-content ul li {
        font-size: 19px;
    }

    /* 三層保溫 */
    .s39-insulation-grid {
        gap: 20px;
    }
    .s39-insulation-grid .s39-insulation-item h5 {
        font-size: 22px;
    }
    .s39-insulation-grid .s39-insulation-item p {
        font-size: 18px;
    }
    .s39-insulation-grid .s39-insulation-item .s39-step {
        font-size: 16px;
        padding: 3px 18px;
    }

    /* 直上直下比較 */
    .s39-compare-title {
        font-size: 26px;
    }
    .s39-compare-wrap .s39-compare-item .s39-compare-label {
        font-size: 20px;
    }
    .s39-compare-wrap .s39-badge {
        font-size: 18px;
    }

    /* 微電腦控制 */
    .s39-control-grid .s39-control-item h5 {
        font-size: 22px;
    }
    .s39-control-grid .s39-control-item p {
        font-size: 18px;
    }
    .s39-control-grid .s39-control-item .s39-ctrl-icon {
        font-size: 34px;
    }

    /* 安全設計 */
    .s39-safety-grid .s39-safety-item {
        font-size: 17px;
    }

    /* APP功能 */
    .s39-app-grid .s39-app-item h5 {
        font-size: 20px;
    }
    .s39-app-grid .s39-app-item p {
        font-size: 17px;
    }
    .s39-app-features ul li {
        font-size: 18px;
    }

    /* 註腳 */
    .s39-solar-footnote {
        font-size: 18px;
        padding: 22px 26px;
    }
}

/* ----- 手機 (max-width: 768px) ----- */
@media (max-width: 768px) {
    /* 頁面標題 */
    .s39-solar-hero {
        height: 170px;
    }

    .s39-solar-hero .s39-hero-text h1 {
        font-size: 30px;
    }

    .s39-solar-hero .s39-breadcrumb {
        font-size: 16px;
    }

    .s39-solar-hero .s39-hero-image img {
        max-width: 65%;
        max-height: 150px;
        transform: translate(60px, -30px);
    }

    .s39-solar-hero .s39-hero-text {
        transform: translateY(30px);
    }

    /* 區塊標題 */
    .s39-solar-section .s39-section-title {
        font-size: 28px;
    }
    .s39-solar-section .s39-section-sub {
        font-size: 18px;
    }

    /* 特色區塊 */
    .s39-solar-feature .s39-feature-head h2 {
        font-size: 26px;
    }
    .s39-solar-feature .s39-feature-head .s39-num {
        font-size: 20px;
        width: 42px;
        height: 42px;
    }
    .s39-solar-feature .s39-feature-content {
        padding: 22px 20px;
    }
    .s39-solar-feature .s39-feature-content p {
        font-size: 19px;
    }
    .s39-solar-feature .s39-feature-content ul li {
        font-size: 18px;
        padding: 3px 0 3px 26px;
    }

    /* 三層保溫 */
    .s39-insulation-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    .s39-insulation-grid .s39-insulation-item {
        padding: 22px 18px;
    }
    .s39-insulation-grid .s39-insulation-item h5 {
        font-size: 20px;
    }
    .s39-insulation-grid .s39-insulation-item p {
        font-size: 17px;
    }
    .s39-insulation-grid .s39-insulation-item .s39-step {
        font-size: 15px;
        padding: 2px 16px;
    }

    /* 直上直下比較 */
    .s39-compare-wrap {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .s39-compare-title {
        font-size: 22px;
        padding: 12px 16px;
    }
    .s39-compare-wrap .s39-compare-item .s39-compare-label {
        font-size: 19px;
        padding: 14px 16px;
        min-height: 60px;
    }
    .s39-compare-wrap .s39-badge {
        font-size: 17px;
        padding: 2px 14px;
    }

    /* 微電腦控制 */
    .s39-control-grid {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }
    .s39-control-grid .s39-control-item {
        padding: 20px 16px;
    }
    .s39-control-grid .s39-control-item h5 {
        font-size: 20px;
    }
    .s39-control-grid .s39-control-item p {
        font-size: 17px;
    }
    .s39-control-grid .s39-control-item .s39-ctrl-icon {
        font-size: 30px;
    }

    /* 安全設計 */
    .s39-safety-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .s39-safety-grid .s39-safety-item {
        font-size: 16px;
        padding: 14px 12px;
    }

    /* APP功能 */
    .s39-app-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    .s39-app-grid .s39-app-item h5 {
        font-size: 19px;
    }
    .s39-app-grid .s39-app-item p {
        font-size: 16px;
    }
    .s39-app-features ul {
        grid-template-columns: 1fr;
    }
    .s39-app-features ul li {
        font-size: 17px;
    }

    /* 註腳 */
    .s39-solar-footnote {
        font-size: 17px;
        padding: 20px 22px;
    }
}

/* ----- 小手機 (max-width: 480px) ----- */
@media (max-width: 480px) {
    /* 頁面標題 */
    .s39-solar-hero {
        height: 140px;
    }

    .s39-solar-hero .s39-hero-text h1 {
        font-size: 24px;
    }

    .s39-solar-hero .s39-breadcrumb {
        font-size: 14px;
    }

    .s39-solar-hero .s39-hero-image img {
        max-width: 58%;
        max-height: 110px;
        transform: translate(60px, -30px);
    }

    .s39-solar-hero .s39-hero-text {
        transform: translateY(30px);
    }

    /* 區塊標題 */
    .s39-solar-section .s39-section-title {
        font-size: 24px;
    }
    .s39-solar-section .s39-section-sub {
        font-size: 16px;
    }

    /* 特色區塊 */
    .s39-solar-feature .s39-feature-head h2 {
        font-size: 22px;
    }
    .s39-solar-feature .s39-feature-head .s39-num {
        font-size: 17px;
        width: 36px;
        height: 36px;
    }
    .s39-solar-feature .s39-feature-content {
        padding: 18px 16px;
    }
    .s39-solar-feature .s39-feature-content p {
        font-size: 17px;
    }
    .s39-solar-feature .s39-feature-content ul li {
        font-size: 16px;
        padding: 2px 0 2px 24px;
    }
    .s39-solar-feature .s39-feature-content ul li::before {
        font-size: 14px;
        left: 2px;
        top: 2px;
    }

    /* 三層保溫 */
    .s39-insulation-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .s39-insulation-grid .s39-insulation-item {
        padding: 20px 16px;
    }
    .s39-insulation-grid .s39-insulation-item h5 {
        font-size: 19px;
    }
    .s39-insulation-grid .s39-insulation-item p {
        font-size: 16px;
    }
    .s39-insulation-grid .s39-insulation-item .s39-step {
        font-size: 14px;
        padding: 2px 14px;
    }

    /* 直上直下比較 */
    .s39-compare-title {
        font-size: 19px;
        padding: 10px 14px;
    }
    .s39-compare-wrap .s39-compare-item .s39-compare-label {
        font-size: 17px;
        padding: 12px 14px;
        min-height: 50px;
        flex-direction: column;
        gap: 4px;
    }
    .s39-compare-wrap .s39-badge {
        font-size: 15px;
        padding: 2px 12px;
    }

    /* 微電腦控制 */
    .s39-control-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .s39-control-grid .s39-control-item {
        padding: 18px 14px;
    }
    .s39-control-grid .s39-control-item h5 {
        font-size: 19px;
    }
    .s39-control-grid .s39-control-item p {
        font-size: 16px;
    }
    .s39-control-grid .s39-control-item .s39-ctrl-icon {
        font-size: 28px;
    }

    /* 安全設計 */
    .s39-safety-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    .s39-safety-grid .s39-safety-item {
        font-size: 15px;
        padding: 12px 10px;
    }

    /* APP功能 */
    .s39-app-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .s39-app-grid .s39-app-item h5 {
        font-size: 18px;
    }
    .s39-app-grid .s39-app-item p {
        font-size: 16px;
    }
    .s39-app-features ul li {
        font-size: 16px;
    }

    /* 註腳 */
    .s39-solar-footnote {
        font-size: 16px;
        padding: 16px 18px;
        line-height: 1.8;
    }
}