body {
    color: #101010;
}
/* #region banner */
.banner {
    border-radius: 0 0 200px 200px;
    /* header 透明後不再佔位，由 banner 自行補上 header 的高度 */
    padding: calc(100px + var(--header-height)) 0 175px;
    text-align: center;
    color: #ffffff;
    background-image: url(../../../img/v4/adhub/banner.webp);
    background-color: #949494;
    background-blend-mode: multiply;
    background-size: cover;
    background-position: center;
}

.banner-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 44px;
    margin-bottom: 4rem;
}

.banner-logo-img {
    height: 38px;
    width: auto;
}

.banner-logo-x {
    font-size: 20px;
    font-weight: 900;
}

.banner-title {
    font-weight: 900;
    font-size: 3rem;
    letter-spacing: 4%;
    margin-bottom: 2rem;
}

.banner-subtitle {
    font-weight: 500;
    font-size: 1.25rem;
    letter-spacing: 1%;
}

@media (max-width: 767px) {
    .banner {
        border-radius: 0 0 75px 75px;
        padding: 42px 0 86px;
    }

    .banner-logo {
        gap: 22px;
        margin-bottom: 4rem;
    }

    .banner-logo-img {
        height: 20px;
    }

    .banner-logo-x {
        font-size: 12px;
    }

    .banner-title {
        font-size: 2rem;
        letter-spacing: 3%;
        margin-bottom: 1.75rem;
    }

    .banner-subtitle {
        font-size: 1rem;
        letter-spacing: 2%;
    }
}
/* #endregion */

/* #region 共用 */
.section {
    margin-top: 6.25rem;
}
.section-title {
    font-weight: 700;
    font-size: 2rem;
    letter-spacing: 2%;
    margin-bottom: 1.5rem;
    text-align: center;
    display: block;
}

@media (max-width: 767px) {
    .section {
        margin-top: 2.25rem;
    }
    .section-title {
        font-size: 1.25rem;
        margin-bottom: 2rem;
    }
}
/* #endregion */

/* #region 合作夥伴 */
.cooperations {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
}
.cooperation {
    background: #F0F0F0;
    border-radius: 16px;
    padding: 2.25rem 1.875rem;
    text-align: center;
}
.cooperation-title {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 2%;
    color: #AD0000;
}
.cooperation-img {
    margin: 2.5rem 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    height: 154px;
}
.cooperation-img img {
    width: auto;
    height: 128px;
    min-height: 0;
    border-radius: 10px;
    transition: background 0.1s;
}
.cooperation-img img:hover {
    background: rgba(255, 255, 255, 0.5);
}
.cooperation-text {
    font-size: 1rem;
    color: #393939;
}

@media (max-width: 991px) {
    .cooperations {
        grid-template-columns: repeat(1, minmax(0, 1fr));
        gap: 1rem;
    }
    .cooperation {
        padding-bottom: 4rem;
    }
    .cooperation-img {
        max-height: 154px;
        height: auto;
        margin: 1.5rem 0;
    }
}
/* #endregion */

/* #region 行銷服務 */
/* 投影片與 pagination 共用同一組水平節奏，圓點才會永遠對齊圖片欄。
   不能用 padding 簡寫，否則會洗掉這裡設的左右值 */
.service,
.service-pagination {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 6rem;
    padding-left: 8.125rem;
    padding-right: 8.125rem;
}

/* 標題列 */
.service-header {
    position: relative;
}
.service-nav {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translate(0, -50%);
    display: flex;
    gap: 0.75rem;
}
.service-nav button {
    width: 90px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 24px;
    border: 1px solid #000000;
    font-size: 24px;
    background: #FFFFFF;
    transition: 0.3s;
}
.service-nav button:hover {
    background: #000000;
    color: #FFFFFF;
}
.service-nav button:active {
    transform: scale(0.94);
}
.service-nav button:focus-visible {
    /* 鍵盤操作的無障礙 */
    outline: 2px solid #000000;
    outline-offset: 2px;
}
.service-nav button[disabled] {
    /* 與 :hover 同權重，必須排在它後面才蓋得過 */
    color: #949494;
    background: #FFFFFF;
    border-color: #949494;
    cursor: not-allowed;
}

/* 輪播容器 */
.service-carousel {
    position: relative;
}
.services {
    display: grid;
    gap: 1.5rem;
    color: #FFFFFF;
}

/* 投影片 */
.service {
    border-radius: 8px;
    padding-top: 5rem;
    padding-bottom: 5rem;
    /* 上下 1fr 當彈簧，把 logo+list 夾在垂直中央 */
    grid-template-rows: 1fr auto auto 1fr;
    grid-template-areas:
        "img ."
        "img logo"
        "img list"
        "img .";
    row-gap: 3.5rem;

    grid-area: 1 / 1; /* 所有投影片疊在同一格 */
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}
.service.facebook {
    background: #2D6FBD;
}
.service.google {
    background: #FBBC05;
}
.service.line {
    background: #0AC656;
}
.service.active {
    opacity: 1;
    pointer-events: auto;
}

/* 投影片內容 */
.service-logo {
    grid-area: logo;
}
.service-logo img {
    height: 40px;
    width: auto;
}
.service-img {
    grid-area: img;
    height: auto;
}
.service-img img {
    width: 500px;
    height: 100%;
    aspect-ratio: 438/349;
    object-fit: cover;
    border-radius: 40px;
    border: 2px solid #FFFFFF;
    position: relative;
}
.service-list {
    grid-area: list;
    list-style-type: '・';
    display: grid;
    gap: 0.5rem;
    grid-auto-flow: column;  /* 先往下排滿一欄，再跳到下一欄 */
    grid-template-rows: repeat(4, auto); /* 每欄固定 4 列 */
}
.service-list li {
    margin-left: 1em;
}

/* 頁碼圓點 */
.service-pagination {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 2.5rem;
    pointer-events: none; /* 這條橫幅橫跨整張卡，別擋住投影片 */
}
.service-dots {
    grid-column: 1; /* 圖片那欄 */
    justify-self: center;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    pointer-events: auto;
}
.service-dot {
    width: 8px;
    height: 8px;
    padding: 0;
    border: 0;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: width 0.3s, background-color 0.3s;
}
.service-dot:hover {
    background: rgba(255, 255, 255, 0.8);
}
.service-dot.active {
    /* 與 :hover 同權重，必須排在它後面，hover 才不會把啟用中的圓點洗淡 */
    width: 60px;
    background: #FFFFFF;
}
.service-dot:focus-visible {
    outline: 2px solid #FFFFFF;
    outline-offset: 2px;
}

@media (max-width: 991px) {
    .service-nav, .service-pagination {
        display: none;
    }
    .service {
        padding: 2rem 2.25rem;
        gap: 1.25rem;
        grid-template-columns: 1fr;
        grid-template-areas:"logo" "img" "list";
        grid-template-rows: auto;
        justify-items: center;
        opacity: 1;
        pointer-events: auto;
        grid-area: auto;
    }
    .service-img img {
        border-radius: 24px;
        aspect-ratio: 281 / 176;
    }
    .service-list {
        width: 100%;
        max-width: 450px;
    }
    .facebook .service-list {
        grid-template-rows: repeat(2, auto);
    }
    .line .service-list {
        width: auto;
    }
}

@media (max-width: 767px) {
    .service-logo img {
        height: 30px;
    }
    .service-list {
        font-size: 0.875rem;
    }
}
/* #endregion */

/* #region 方案 */
.cases {
    display: grid;
    grid-template-columns: auto repeat(3, 1fr);
    grid-template-rows: auto auto auto auto; /* 卡片 / 服務 / 適用商家 / 費用 */
    column-gap: 1.5rem;
    margin-bottom: 1.5rem;
}
.case-head {
    border: 2px solid #C61414;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    margin-bottom: 1rem;
    padding: 2.5rem 1rem;
    transition: background 0.1s;
}
.case-title {
    color: #C61414;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 3%;
    margin-bottom: 0.25rem;
    text-align: center;
}
.case-subtitle {
    color: #949494;
    font-size: 0.75rem;
}
.case-pick {
    position: absolute;
    inset: 0;
}
.case-head:has(.case-pick:hover), .case-head:has(.case-pick:focus-visible) {
    background: rgba(198, 20, 20, 0.05)
}
.case {
    grid-row: 2 / -1; /* 只跨資料列，不碰卡片列 */
    display: grid;
    grid-template-rows: subgrid; /* 繼承外層列高 → 跨欄自動對齊 */
    transition: opacity 0.3s;
}
.case-cell {
    background: rgba(240, 240, 240, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 -0.75rem 0.25rem;
    padding: 2rem;
    color: #393939;
    transition: background 0.1s;
}
.case-labels .case-cell {
    margin-left: 0;
    border-radius: 8px 0 0 8px;
    font-weight: 500;
    letter-spacing: 1%;
}
.case:last-child .case-cell {
    margin-right: 0;
    border-radius: 0 8px 8px 0;
}
.case-list {
    list-style-type: '・';
    padding-left: 1em;
}
.case.hover .case-cell {
    background: rgba(232, 232, 232, 0.1);
}
.case-apply {
    background-color: #C61414;
    background-image: linear-gradient(to right, #AD0000, #AD0000);
    background-repeat: no-repeat;
    background-size: 0% 100%; /* 預設寬度 0 → 看不見 */
    transition: background-size 0.3s;

    color: #FFFFFF;
    font-weight: 700;
    letter-spacing: 3%;
    padding: 0.875rem;
    width: 100%;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    transition: background 0.5s;
}
.case-apply:hover {
    color: #FFFFFF;
    background-size: 100% 100%;  /* 展開到滿版 → 深紅從左滑入 */
}
.case-note {
    color: #393939;
    text-align: center;
}
@media (max-width: 767px) {
    .cases {
        column-gap: 0.5rem;
        grid-template-columns: repeat(3, 1fr);
        margin-bottom: 1rem;
    }
    .case-head-spacer {
        display: none;
    }
    .case-head {
        padding: 0.75rem;
        margin-bottom: 0.5rem;
    }
    .case-title {
        font-size: 1rem;
        letter-spacing: 2%;
        line-height: 1.75;
    }
    .case-subtitle {
        font-size: 0.675rem;
    }
    .case-cell {
        margin: 0 0 0.25rem;
        padding: 1.75rem;
        font-size: 0.75rem;
    }
    .case.case-labels .case-cell{
        background: rgba(240, 240, 240, 1);
        padding: 1.75rem;

    }
    .case:not(.case-labels) {
        opacity: 0;
        grid-column: 2 / -1;
        
    }
    .case:not(.case-labels) .case-cell{
        margin-left: -1.5rem;
    }
    .case.active {
        opacity: 1;
    }
    .case.hover .case-cell {
        background: rgba(240, 240, 240, 0.5);
    }
    .case-head:has(.case-pick.active) {
        background: rgba(198, 20, 20, 0.05)
    }

    .case-apply {
        padding: 0.675rem;
        position: relative;
    }
    .case-apply-arrow {
        position: absolute;
        right: 1rem;
        top: 50%;
        transform: translate(0, -50%);
    }
    .case-note {
        font-size: 0.675rem;
    }
}
/* #endregion */

/* #region 常見問題 */
.section:has(.questions) {
    background: #F0F0F0;
    padding: 3.125rem 0 9rem;
}
.questions {
    margin-top: 3rem;
    margin-bottom: 0rem;
    display: grid;
    gap: 1.125rem;
}

.question-title {
    display: flex;
    align-items: start;
    cursor: pointer;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 2%;
    padding: 1rem 0;
    transition: opacity 0.3s;
}
.question-title:hover {
    opacity: 0.8;
}
.question-title::before {
    content: "Q" counter(list-item);
    color: #C61414;
    font-weight: 700;
    margin-right: 0.5rem;
}
.question-text {
    flex: 1;
}
.questions details::details-content {
    display: grid;
    grid-template-rows: 0fr;
    overflow: hidden;
    transition: grid-template-rows 0.3s, content-visibility 0.3s allow-discrete;
}
.questions details[open]::details-content {
    grid-template-rows: 1fr;
}
.question-answer {
    color: #393939;
    min-height: 0; /* grid item 預設 min-height:auto，不歸零就壓不下去 */
}
.question-answer > p {
    margin: 0;
    padding: 0 2em 0;
}
.question-answer a {
    color: inherit;
    text-decoration: underline;

}

.question-toggle {
    margin-left: 2.5rem;
    display: block;
    font-size: 1.5rem;
    width: 1em;
    height: 1em;
    background: rgba(198, 20, 20, 1);
    color: #FFFFFF;
    border-radius: 100%;
    position: relative;
    transition: background 0.2s;
    flex: none;
    margin-top: 0.1875rem;   /* (1.875rem 行高 − 1.5rem 圓圈) / 2 */
}
/* 兩根白條疊成 +。豎的那根轉 90° 就跟橫的重合，看起來就變成 − */
.question-toggle::before,
.question-toggle::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 0.46em;
    height: 0.12em;
    background: #FFFFFF;
    border-radius: 1em;
}
.question-toggle::after {
    transform: translate(-50%, -50%) rotate(90deg);
    transition: transform 0.2s;
}
.questions details[open] .question-toggle {
    background: rgba(198, 20, 20, 0.5);
}
.questions details[open] .question-toggle::after {
    transform: translate(-50%, -50%) rotate(0deg);
}

.question-title::-webkit-details-marker {
    /* Safari 18.4 以前的三角形是 shadow DOM,改 display 動不到,要另外關掉 */
    display: none;
}

@media (max-width: 767px) {
    .section:has(.questions) {
        padding: 1.125rem 0 1.25rem;
    }
    .section:has(.questions) .section-title {
        margin-bottom: 0;
    }
    .questions {
        margin-top: 1.5rem;
        gap: 0;
    }
    .question-title {
        font-size: 1rem;
    }
    .question-toggle {
        font-size: 1.125rem;
        margin-top: 0.1875rem;   /* (1.5rem − 1.125rem) / 2 */
    }
    .question-answer > p {
        padding-top: 1.25rem;
        font-size: 0.875rem;
    }

}
/* #endregion */

/* #region 懸浮按鈕 */
.float-btn {
    position: fixed;
    right: 2.5rem;
    bottom: 2.5rem;
    font-size: 50px;
    width: 1em;
    height: 1em;
    display: flex;
    justify-content: center;
    align-items: center;
}
/* 圓圈不能當 .float-btn 的背景：fixed 會建立 stacking context，
   自己的背景永遠畫在負 z-index 子層之前，文字躲不到後面 */
.float-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 100%;
    background: #5EB842;
    box-shadow: 0px 0px 26px 0px rgba(130, 226, 105, 0.5), 1px 1px 4px 0px rgba(116, 188, 97, 0.5), -1px -1px 4px 0px rgba(116, 188, 97, 0.5);
    transition: background 0.3s, box-shadow 0.3s;
}
.float-btn img {
    /* 有定位的 ::before 會蓋過一般流的 flex item，圖示要再往上疊一層 */
    position: relative;
    z-index: 1;
    width: 0.5em;
    height: auto;
}
.float-btn-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.875rem;
    color: #368F1A;
    white-space: nowrap;
    opacity: 0;
    transition: top 0.3s, opacity 0.3s;
    z-index: -1;
}
.float-btn:hover::before {
    background: #368F1A;
    box-shadow: none;
}
.float-btn:hover .float-btn-text {
    top: -16px;
    opacity: 1;
}
@media (max-width: 767px) {
    .float-btn {
        right: 15px;
    }
}

/* #endregion */