* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    background: transparent;
}

body {
    background: #f3f4f6;
}

.page {
    width: 100%;
    padding: 40px 20px;
}

.dhb-lp {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    overflow: hidden;
    background: transparent;
}

.dhb-lp section {
    width: 100%;
}

.dhb-image {
    display: block;
    width: 100%;
    height: auto;
}

.fv {
    position: relative;
}

.fv img {
    display: block;
    width: 100%;
}

.fv-btn {
    position: absolute;

    bottom: 3.5%;
    right: 4.5%;

    width: 42%;
    height: 9.5%;

    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;

    border-radius: 999px;

    color: #fff;
    text-decoration: none;

    font-family:
        "Yu Mincho",
        "Hiragino Mincho ProN",
        "Hiragino Mincho Pro",
        serif;

    font-size: clamp(16px, 1.7vw, 26px);
    font-weight: 500;
    line-height: 1;
    letter-spacing: 0.14em;

    background:
        linear-gradient(90deg,
            #0c2f73 0%,
            #17489f 55%,
            #2769d8 100%);

    box-shadow:
        0 9px 22px rgba(0, 12, 40, 0.3);

    overflow: hidden;

    transition:
        transform 0.25s ease,
        box-shadow 0.25s ease,
        filter 0.25s ease;
}


/* 左側のカートアイコン */
.fv-btn::before {
    content: "";

    position: absolute;
    left: 10%;

    width: 7%;
    aspect-ratio: 1 / 1;

    background-color: #fff;

    -webkit-mask:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='9' cy='20' r='1'/%3E%3Ccircle cx='19' cy='20' r='1'/%3E%3Cpath d='M3 4h2l2.4 10.2a2 2 0 0 0 2 1.5h8.8a2 2 0 0 0 2-1.6L21.5 8H7'/%3E%3C/svg%3E") center / contain no-repeat;

    mask:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='9' cy='20' r='1'/%3E%3Ccircle cx='19' cy='20' r='1'/%3E%3Cpath d='M3 4h2l2.4 10.2a2 2 0 0 0 2 1.5h8.8a2 2 0 0 0 2-1.6L21.5 8H7'/%3E%3C/svg%3E") center / contain no-repeat;

    opacity: 0.9;
}


/* 右側の矢印 */
.fv-btn::after {
    content: "›";

    position: absolute;
    right: 10%;

    display: flex;
    align-items: center;
    justify-content: center;

    width: 8%;
    aspect-ratio: 1 / 1;

    border: 1px solid rgba(255, 255, 255, 0.48);
    border-radius: 50%;

    background: rgba(255, 255, 255, 0.08);

    color: #fff;

    font-family: serif;
    font-size: 1.35em;
    font-weight: 300;
    line-height: 1;

    transition:
        transform 0.25s ease,
        background-color 0.25s ease;
}


.fv-btn:hover {
    transform: translateY(-2px);

    filter: brightness(1.06);

    box-shadow:
        0 13px 28px rgba(0, 12, 40, 0.4);
}


.fv-btn:hover::after {
    transform: translateX(4px);

    background: rgba(255, 255, 255, 0.16);
}

.dhb-offer {
    position: relative;
}

.dhb-product {
    position: relative;
}

.dhpro-link {

    position: absolute;

    right: 8%;
    bottom: 3%;

    display: flex;
    align-items: center;
    justify-content: center;

    width: 240px;
    height: 45px;

    border: 1px solid #12398b;
    border-radius: 999px;

    background: #fff;

    color: #12398b;

    font-size: 16px;
    font-weight: 700;

    text-decoration: none;

    transition: .25s;
}

.dhpro-link::after {

    content: "";

    width: 10px;
    height: 10px;

    margin-left: 18px;

    border-top: 2px solid #12398b;
    border-right: 2px solid #12398b;

    transform: rotate(45deg);

}

.dhpro-link:hover {

    background: #12398b;
    color: #fff;

}

.dhpro-link:hover::after {

    border-color: #fff;

}

.parts-link-wrap {
    background: transparent;
    text-align: right;
    margin: 0 0 px;
}

.parts-link {
    text-align: right;
    margin: 5px 15px 20px;
}

.parts-btn {
    display: inline-flex;
    align-items: center;
    gap: 14px;

    font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
    font-size: 16px;
    letter-spacing: .08em;
    color: #153a8b;
    text-decoration: none;

    padding-bottom: 1px;

    border-bottom: 1px solid #153a8b;

    transition: .25s ease;
}

.parts-btn span {
    font-size: 34px;
    transition: .25s ease;
}

.parts-btn:hover {
    color: #2d7fff;
    border-color: #2d7fff;
}

.parts-btn:hover span {
    transform: translateX(6px);
}

/* ==========================
   offer CTA
========================== */

.cta-area {
    position: absolute;
    left: 50%;
    bottom: 10px;
    z-index: 2;

    width: 75%;
    padding: 0;

    transform: translateX(-50%);
}

.cta-button {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;

    width: 100%;
    min-height: 112px;
    margin: 0 auto;
    padding: 16px 72px 14px 124px;

    border-radius: 16px;

    background: linear-gradient(100deg,
            #051d58 0%,
            #062768 48%,
            #073a82 100%);

    box-shadow: 0 10px 20px rgba(5, 29, 85, 0.22);

    color: #ffffff;
    text-decoration: none;

    transition:
        transform 0.25s ease,
        box-shadow 0.25s ease,
        filter 0.25s ease;
}

.cta-button:hover {
    transform: translateY(-3px);

    box-shadow:
        0 16px 30px rgba(5, 29, 85, 0.3);

    filter: brightness(1.06);
}

/* 送料無料の丸 */

.cta-badge {
    position: absolute;
    top: 50%;
    left: 20px;

    display: flex;
    align-items: center;
    justify-content: center;

    width: 82px;
    height: 82px;

    border-radius: 50%;

    background: linear-gradient(145deg,
            #f8dfa9 0%,
            #e7b967 100%);

    color: #09235c;

    font-family:
        "Yu Mincho",
        "Hiragino Mincho ProN",
        serif;

    font-size: 21px;
    line-height: 1.25;
    letter-spacing: 0.08em;
    text-align: center;

    transform: translateY(-50%);
}

/* CTA中央の文字 */

.cta-copy {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    width: 100%;
    min-width: 0;

    text-align: center;
}

.cta-main {
    display: flex;
    align-items: baseline;
    justify-content: center;
    flex-wrap: nowrap;
    gap: 8px;

    width: 100%;

    font-family:
        "Yu Mincho",
        "Hiragino Mincho ProN",
        serif;

    font-size: clamp(21px, 2.5vw, 30px);
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: 0.025em;
    white-space: nowrap;
}

.cta-main strong {
    color: #f1c078;
    font-size: 1.12em;
    font-weight: 500;
    letter-spacing: 0.035em;
}

.cta-sub {
    display: block;
    margin-top: 5px;

    font-family:
        "Yu Mincho",
        "Hiragino Mincho ProN",
        serif;

    font-size: clamp(11px, 1.25vw, 15px);
    line-height: 1.5;
    letter-spacing: 0.06em;
}

/* 右側の矢印 */

.cta-arrow {
    position: absolute;
    top: 50%;
    right: 24px;

    display: block;

    width: 19px;
    height: 19px;

    border-top: 3px solid #efbf78;
    border-right: 3px solid #efbf78;

    transform:
        translateY(-50%) rotate(45deg);
}

/* ==========================
   FAQ accordion PC
========================== */

.dhb-faq {
    position: relative;

    padding: 50px 38px 74px;

    background:
        url("../img/item01/w-hydrogen-bottle-new/14_faq_bg.png") top center / 100% 100% no-repeat;
}

.dhb-faq-inner {
    position: relative;
    z-index: 1;

    width: 100%;
    max-width: 910px;
    margin: 0 auto;
}

.dhb-faq-header {
    margin-bottom: 28px;
    text-align: center;
}

.dhb-faq-en {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;

    margin: 0 0 8px;

    color: #c79a53;

    font-family:
        "Yu Mincho",
        "Hiragino Mincho ProN",
        serif;

    font-size: 24px;
    letter-spacing: 0.08em;
}

.dhb-faq-en::before,
.dhb-faq-en::after {
    content: "";

    width: 88px;
    height: 1px;

    background: rgba(15, 47, 111, 0.35);
}

.dhb-faq-title {
    margin: 0;

    color: #09285f;

    font-family:
        "Yu Mincho",
        "Hiragino Mincho ProN",
        serif;

    font-size: clamp(34px, 4.8vw, 52px);
    font-weight: 500;
    line-height: 1.35;
    letter-spacing: 0.09em;
}

.dhb-faq-lead {
    margin: 9px 0 0;

    color: #17376f;

    font-family:
        "Yu Mincho",
        "Hiragino Mincho ProN",
        serif;

    font-size: 17px;
    line-height: 1.7;
    letter-spacing: 0.05em;
}

.dhb-faq-list {
    display: grid;
    gap: 10px;
}

.dhb-faq-item {
    overflow: hidden;

    border: 1px solid rgba(41, 75, 143, 0.27);
    border-radius: 7px;

    background: rgba(255, 255, 255, 0.76);
}

.dhb-faq-question {
    position: relative;

    display: grid;
    grid-template-columns: 58px minmax(0, 1fr) 26px;
    align-items: center;
    gap: 10px;

    min-height: 75px;
    padding: 18px 26px 18px 28px;

    color: #09285f;

    cursor: pointer;
    list-style: none;
}

.dhb-faq-question::-webkit-details-marker {
    display: none;
}

.dhb-faq-question::marker {
    content: "";
}

.dhb-faq-mark,
.dhb-faq-answer-mark {
    font-family:
        "Times New Roman",
        "Yu Mincho",
        serif;

    font-size: 29px;
    line-height: 1;
}

.dhb-faq-mark {
    color: #09285f;
}

.dhb-faq-question-text {
    font-family:
        "Yu Mincho",
        "Hiragino Mincho ProN",
        serif;

    font-size: 19px;
    font-weight: 600;
    line-height: 1.55;
    letter-spacing: 0.025em;
}

.dhb-faq-toggle {
    position: relative;

    display: block;

    width: 18px;
    height: 18px;

    justify-self: end;
}

.dhb-faq-toggle::before,
.dhb-faq-toggle::after {
    content: "";

    position: absolute;
    top: 50%;
    left: 50%;

    width: 18px;
    height: 2px;

    background: #09285f;

    transform: translate(-50%, -50%);
    transition: transform 0.25s ease;
}

.dhb-faq-toggle::after {
    transform:
        translate(-50%, -50%) rotate(90deg);
}

.dhb-faq-item[open] .dhb-faq-toggle::after {
    transform:
        translate(-50%, -50%) rotate(0deg);
}

.dhb-faq-answer {
    display: grid;
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 10px;

    padding: 0 70px 23px 28px;

    color: #374967;
}

.dhb-faq-answer-mark {
    color: #c79a53;
}

.dhb-faq-answer-text {
    font-family:
        "Yu Mincho",
        "Hiragino Mincho ProN",
        serif;

    font-size: 16px;
    line-height: 1.95;
    letter-spacing: 0.02em;
}

.dhb-faq-answer-text p {
    margin: 0;
}

.dhb-faq-answer-text p+p {
    margin-top: 2px;
}

.dhb-faq-question:hover {
    background: rgba(234, 242, 255, 0.48);
}

.dhb-faq-question:focus-visible {
    outline: 3px solid rgba(20, 88, 180, 0.34);
    outline-offset: -3px;
}


/* 追従CTAの外側：背景は完全に透明 */
.floating-cta {
    position: fixed;
    left: 50%;
    bottom: 22px;
    transform: translateX(-50%);
    z-index: 9999;

    width: min(620px, calc(100% - 40px));
    padding: 0;

    background: transparent;
    pointer-events: none;
}

/* ボタン本体 */
.floating-cta__button {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 100%;
    min-height: 76px;
    padding: 18px 60px;

    border: 1px solid rgba(147, 200, 255, 0.65);
    border-radius: 999px;

    background: linear-gradient(135deg, #163f79 0%, #0b2554 100%);

    box-shadow:
        0 14px 35px rgba(3, 29, 83, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.24);

    color: #fff;
    font-family:
        "Yu Mincho",
        "Hiragino Mincho ProN",
        "游明朝",
        serif;
    font-size: 25px;
    font-weight: 500;
    letter-spacing: 0.14em;
    line-height: 1.4;
    text-align: center;
    text-decoration: none;
    text-shadow: 0 1px 5px rgba(0, 15, 55, 0.3);

    pointer-events: auto;
    transition:
        transform 0.25s ease,
        box-shadow 0.25s ease,
        filter 0.25s ease;
}

.floating-cta__button:hover {
    transform: translateY(-3px);
    filter: brightness(1.08);

    background: linear-gradient(135deg, #1d4d94 0%, #14366f 100%);

    box-shadow:
        0 18px 42px rgba(3, 29, 83, 0.42),
        inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

/* CTAに本文が隠れないようにする */
.w-hydrogen-lp {
    padding-bottom: 125px;
}

.floating-cta a {
    display: block;
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
    padding: 16px;
    border-radius: 999px;
    background: #1f5fff;
    color: #fff;
    text-align: center;
    text-decoration: none;
    font-weight: bold;
}

.page-w-hydrogen-bottle .product_inner {
    width: 100% !important;
    max-width: 1200px !important;
    margin: 0 auto !important;
}

@media screen and (max-width: 767px) {


    .fv-btn {
        width: 42%;
        height: 9.5%;

        right: 4.5%;
        bottom: 3.5%;

        padding: 0 10% 0 9%;

        font-size: 2.0vw;
        letter-spacing: 0.08em;

        box-shadow:
            0 5px 12px rgba(0, 12, 40, 0.3);
    }

    .fv-btn::before {
        left: 7%;
        width: 8%;
    }

    .fv-btn::after {
        right: 5%;
        width: 9%;

        font-size: 1.25em;
    }


    .parts-link {
        margin: 2px 2px 6vw;
    }

    .parts-btn {
        font-size: 2vw;
        gap: 5px;
    }

    .parts-btn span {
        font-size: 6vw;
    }


    .cta-area {
        width: 92%;
        bottom: 5px;
    }

    .cta-button {

        min-height: 34px;

        padding: 3px 24px 3px 46px;

        border-radius: 8px;
    }

    .cta-badge {

        left: 34px;

        width: 28px;
        height: 28px;

        font-size: 8px;
        line-height: 1.05;
    }

    .cta-copy {
        align-items: center;
        text-align: center;

        width: 100%;
    }

    .cta-main {

        display: block;

        width: 100%;

        text-align: center;

        font-size: 10px;

        white-space: nowrap;
    }

    .cta-main strong {

        display: inline;

        font-size: 1em;
    }

    .cta-sub {

        margin-top: 0;

        font-size: 5px;

        line-height: 1.1;
    }

    .cta-arrow {

        right: 32px;

        width: 8px;
        height: 8px;

        border-top: 1.5px solid #efbf78;
        border-right: 1.5px solid #efbf78;
    }

    .dhpro-link {

        width: 90px;
        height: 20px;

        border: 0.5px solid #12398b;

        right: 8%;
        bottom: 2%;

        font-size: 6px;

    }

    .dhpro-link::after {

        width: 5px;
        height: 5px;

        margin-left: 6px;

        border-width: 1.5px;

    }


    /* ==========================
FAQ smartphone
========================== */


    .dhb-faq {
        padding: 27px 18px 40px;

        background-size: cover;
    }

    .dhb-faq-header {
        margin-bottom: 17px;
    }

    .dhb-faq-en {
        gap: 12px;

        margin-bottom: 4px;

        font-size: 13px;
    }

    .dhb-faq-en::before,
    .dhb-faq-en::after {
        width: 42px;
    }

    .dhb-faq-title {
        font-size: 27px;
        letter-spacing: 0.07em;
    }

    .dhb-faq-lead {
        margin-top: 5px;

        font-size: 10px;
        line-height: 1.6;
    }

    .dhb-faq-list {
        gap: 6px;
    }

    .dhb-faq-question {
        grid-template-columns: 31px minmax(0, 1fr) 15px;
        gap: 5px;

        min-height: 48px;
        padding: 11px 12px;
    }

    .dhb-faq-mark,
    .dhb-faq-answer-mark {
        font-size: 18px;
    }

    .dhb-faq-question-text {
        font-size: 10px;
        line-height: 1.55;
    }

    .dhb-faq-toggle {
        width: 11px;
        height: 11px;
    }

    .dhb-faq-toggle::before,
    .dhb-faq-toggle::after {
        width: 11px;
        height: 1px;
    }

    .dhb-faq-answer {
        grid-template-columns: 31px minmax(0, 1fr);
        gap: 5px;

        padding: 0 28px 13px 12px;
    }

    .dhb-faq-answer-text {
        font-size: 8px;
        line-height: 1.8;
    }

    .floating-cta {
        bottom: 12px;
        width: calc(100% - 28px);
    }

    .floating-cta__button {
        min-height: 58px;
        padding: 13px 24px;

        font-size: 18px;
        letter-spacing: 0.1em;
    }

    .w-hydrogen-lp {
        padding-bottom: 90px;
    }

    .product_inner {
        max-width: 100%;
        padding: 0 !important;
        margin: 0 !important;
    }

    .page {
        padding: 0 !important;
    }

    .dhb-lp {
        max-width: 100%;
    }

}