/* 基本フォント設定 */
html,
body {
    font-family: 'Noto Sans JP', sans-serif !important;
}

.cLogo {
    position: absolute;
    top: 1%;
    left: 5%;
    width: 21%;
    max-width: 350px;
    z-index: 1000;
}

.main-visual-section-wrapper {
    max-width: 1500px;
    margin: 0 auto;
    z-index: 100;
    position: relative;
}

/* MV: 767px 以下は SP、768px 以上は PC（常にどちらか一方のみ） */
.main-visual-section-wrapper.pc {
    display: none;
}

.main-visual-section-wrapper.sp {
    display: block;
}

@media screen and (min-width: 768px) {
    .main-visual-section-wrapper.pc {
        display: block;
    }

    .main-visual-section-wrapper.sp {
        display: none;
    }
}

.main-visual-section {
    background: url(../img/main_pc_bg.jpg) no-repeat center center;
    background-size: cover;
    position: relative;
    width: 100%;
    padding-bottom: 46%;
    /* 16:9比率 */
    height: 0;
}

.main-visual-section-sp {
    background: url(../img/icon.png) no-repeat center center;
    background-size: cover;
    position: relative;
    width: 100%;
    padding-bottom: 100%;
    /* 16:9比率 */
    height: 0;
    overflow: hidden;
}

.main-visual-section-sp .maincatch {
    top: 83%;
    position: absolute;
    margin: 0 auto;
    display: block;
    width: 90%;
    left: 5%;
}

.main-visual-section-sp .cLogo {
    width: 36%;
    top: -0.5%;
    left: 0;
}


.title-container {
    height: 42vw;
    align-items: center;
    justify-content: center;
    display: flex;
}

.video-container {
    max-width: 960px;
    margin: 0 auto;
}

.video-responsive {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    /* 16:9比率 */
    height: 0;
    overflow: hidden;
}

.video-responsive iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.sho-list {
    list-style: none;
    padding-left: 0;
    text-align: left;
    counter-reset: number;
}

.sho-list li {
    position: relative;
    padding-left: 2em;
    margin-bottom: 0.7em;
    text-align: left;
    counter-increment: number;
}

.text h3 {
    font-size: 1.7rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
}

.user-img {
    display: block;
    margin: 0 auto 1rem auto;
}

.voice-section {
    background-color: #f6f7f8;
    padding: 1rem;
}

.dousa-section {
    background-color: #f6f7f8;
    padding: 1rem;
}

.dousa-section h2 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 4rem;
}

.voice-section .container {
    max-width: 1160px;
}

.voice-inner {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    padding: 2rem;
    height: 100%;
    font-size: 15px;
    line-height: 1.6;
}

.qa-section {
    background: url(../img/qabg.jpg) no-repeat center center;
    background-size: cover;
    padding: 4rem 0;
}

.qa-section .container {
    max-width: 960px;
}

.q-area,
.a-area {
    background-color: #ffffff;
    padding: 2rem 3rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    margin: 0.2rem;
}

.q-area p,
.a-area p {
    margin-bottom: 0;
}

.q-area {
    font-weight: bold;
    font-size: 1.3rem;
}


.mb-5 {
    margin-bottom: 4rem !important;
}

.mt-5 {
    margin-top: 4rem !important;
}

.imgmax {
    max-width: 920px;
    margin: 0 auto;
    width: 100%;
}

.txt-read {
    font-size: 1.2rem;
    text-align: left;
    max-width: 900px;
    margin: 4rem auto;
    line-height: 2.2;
}

hr {
    width: 100%;
    box-sizing: border-box;
    margin-left: 0;
    margin-right: 0;
}

.platforms {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

/* 各ブロック共通 */
.platform-block {
    flex: 1 1 240px;
    border-radius: 8px;
    overflow: hidden;
    /* 見出しの角丸を保つ */
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    background: #fff;
    /* 本文は白背景 */
}

/* 見出し部分 */
.platform-title {
    margin: 0;
    padding: 1rem;
    font-size: 1.25rem;
    color: #fff;
}

/* 本文部分 */
.platform-content {
    padding: 1.5rem 0.5rem;
    color: #333;
    background: #fff;
    text-align: left;
    font-size: 14px;
}

.platform-content ul {
    margin: 0;
    padding-left: 1.2em;
}

.platform-content li {
    margin-bottom: 0.5em;
    line-height: 1.4;
}

/* カラー指定 */
.windows .platform-title {
    background: #0072c6;
}

.mac .platform-title {
    background: #666;
}

.android .platform-title {
    background: #94c11f;
}

.ios .platform-title {
    background: #e6007e;
}

/* 注意書き */
.note {
    margin-top: 15px;
    padding: 1rem;
    text-align: center;
    font-weight: bold;
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.iconimg {
    max-width: 400px;
}

.buy-section {
    padding-top: 6rem !important;
    padding-bottom: 6rem !important;
}

.buy-section h2,
.buy-section__page-title {
    font-size: clamp(1.55rem, 4vw, 2rem);
    font-weight: bold;
    margin-bottom: 0.75rem;
    border-bottom: 1px solid #56a2e5;
    padding-bottom: 1rem;
}

.buy-section__lead {
    font-size: 1.15rem;
    font-weight: bold;
    margin-top: 0;
    margin-bottom: 0.5rem;
    line-height: 1.5;
}

.buy-section__tier-name {
    font-weight: inherit;
}

.buy-section__tier-name--lite {
    color: #198754;
}

.buy-section__tier-name--standard {
    color: #e07600;
}

.buy-section__tier-name--premium {
    color: #6f42c1;
}

.buy-tier__features {
    list-style: none;
    margin: 0 0 1.35rem;
    padding: 0;
    font-size: clamp(0.95rem, 2.2vw, 1.05rem);
    line-height: 1.65;
    color: #333;
}

.buy-tier__features li {
    position: relative;
    padding-left: 1.65em;
    margin-bottom: 0.1em;
}

.buy-tier__features li:last-child {
    margin-bottom: 0;
}

/* ご購入ボタン直上の価格表示（割引・税込・希望小売価格） */
.buy-tier__pricing {
    margin-bottom: 0.85rem;
    max-width: 420px;
    margin-left: auto;
    margin-right: auto;
}

.buy-tier__pricing-main {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.4rem 0.95rem;
    justify-content: center;
    margin-bottom: 0.2rem;
}

.buy-tier__pricing-discount {
    font-weight: 700;
    font-size: clamp(1.1rem, 3.1vw, 1.4rem);
    color: #c41e3a;
    letter-spacing: 0.02em;
}

.buy-tier__pricing-sale {
    display: inline-flex;
    align-items: baseline;
    gap: 0.3rem;
}

.buy-tier__pricing-price {
    font-weight: 700;
    font-size: clamp(1.9rem, 5.5vw, 2.45rem);
    line-height: 1.05;
    color: #111;
    letter-spacing: 0.02em;
}

.buy-tier__pricing-tax {
    font-size: 0.875rem;
    font-weight: 400;
    color: #444;
    line-height: 1;
    transform: translateY(0.05em);
}

.buy-tier__pricing-msrp {
    margin: 0;
    padding: 0;
    font-size: 1.1rem;
    color: #8a9099;
    text-align: center;
    line-height: 1.5;
}

.buy-tier__pricing-msrp-num {
    text-decoration: line-through;
    text-decoration-thickness: 1px;
}

@media (min-width: 768px) {
    .buy-tier__pricing {
        margin-left: 0;
        margin-right: 0;
    }

    .buy-tier__pricing-main {
        justify-content: flex-start;
    }

    .buy-tier__pricing-msrp {
        text-align: left;
    }
}

.buy-tier--lite .buy-tier__features li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    font-weight: 700;
    color: #198754;
}

.buy-tier--standard .buy-tier__features li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    font-weight: 700;
    color: #e07600;
}

.buy-tier--premium .buy-tier__features li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    font-weight: 700;
    color: #6f42c1;
}

.buy-tier {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem 2rem;
    align-items: flex-start;
    padding: 5rem 0;
    border-bottom: 1px solid rgba(86, 162, 229, 0.35);
}

.buy-tier:last-of-type {
    border-bottom: none;
    padding-bottom: 0;
}

/* 旧2カラム（左ビジュアル大）に寄せた比率：アイコンを十分大きく */
.buy-tier__icon {
    flex: 0 0 auto;
    width: 100%;
    max-width: min(92vw, 320px);
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.buy-tier__icon img {
    width: 100%;
    height: auto;
    max-width: 400px;
    margin: 0 auto;
    display: block;
}

.buy-tier__body {
    flex: 1 1 260px;
    min-width: 0;
}

@media (min-width: 768px) {
    .buy-tier {
        flex-wrap: nowrap;
        gap: 2rem 3.5rem;
        align-items: flex-start;
    }

    .buy-tier__icon {
        flex: 0 0 42%;
        width: 42%;
        max-width: 400px;
        margin-left: 0;
        margin-right: 0;
    }

    .buy-tier__body {
        flex: 1 1 0;
        padding-top: 0.25rem;
    }
}

.buy-tier__name {
    font-size: 1.15rem;
    font-weight: bold;
    margin: 0 0 0.75rem;
    line-height: 1.4;
}

.buy-tier__label {
    font-size: 1rem;
    font-weight: bold;
    margin: 0 0 0.4rem;
}

.buy-tier__label--spaced {
    margin-top: 1.25rem;
}

.midashi-col {
    padding: 20px 45px;
}

.text-col {
    justify-content: center;
    align-items: center;
    display: flex;
    font-size: 19px;
    line-height: 1.8;
}

.mainlogo {

    width: 43%;

    margin-top: 7%;

    margin-left: 5%;
}

.maincatch {

    margin: 0 auto;

    display: block;

    width: 76%;

    z-index: 10;

    position: relative;
}

.about-section {
    background-color: #f0f3f7;
}

/* LP 統計・訴求ブロック（catch3/catch4 画像の代替） */
.lp-stat-block {
    max-width: 920px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 0.75rem;
    padding-right: 0.75rem;
}

.lp-stat-catch {
    background: linear-gradient(90deg, #ccff00 0%, #fff566 50%, #ffee00 100%);
    border-radius: 12px;
    padding: clamp(1.75rem, 5vw, 3rem) 1.25rem;
    margin-bottom: 0;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.12);
}

.lp-stat-catch__headline {
    margin: 0;
    font-size: clamp(1.35rem, 3.8vw, 2.05rem);
    font-weight: 700;
    line-height: 1.45;
    color: #111;
    letter-spacing: 0.02em;
    text-align: center;
    word-break: keep-all;
}

.lp-stat-catch__line2 {
    display: inline-block;
    margin-top: 0.15em;
}

.lp-stat-catch__qk {
    font-weight: 700;
    font-size: 1.05em;
    color: #111;
}

.lp-stat-catch__num {
    font-weight: 900;
    font-size: 1.35em;
    color: #1a1a1a;
    letter-spacing: 0.03em;
}

.lp-stat-panel {
    margin-top: 0;
}

.lp-stat-panel--body {
    background: #f7f8fa;
    border-radius: 10px;
    padding: clamp(1.5rem, 4vw, 2.5rem) clamp(1rem, 3vw, 4rem);
    margin-top: 2rem;
    margin-bottom: 0;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85);
}

.lp-stat-p {
    margin: 0 0 1.35em;
    font-size: clamp(1rem, 2.5vw, 1.15rem);
    line-height: 2;
    color: #333;
    font-weight: 400;
}

.lp-stat-p:last-child {
    margin-bottom: 0;
}

.lp-stat-p--emph {
    font-weight: 500;
    font-size: clamp(1.05rem, 2.6vw, 1.2rem);
    color: #222;
}

.lp-stat-p--cta {
    text-align: center;
    font-size: clamp(1.1rem, 2.8vw, 2rem);
    font-weight: 700;
    line-height: 1.75;
    color: #1a1a1a;
    margin-top: 1.75rem;
}

.lp-stat-p--closing {
    text-align: center;
    font-size: clamp(1.05rem, 2.6vw, 1.22rem);
    font-weight: 500;
    margin-top: 1.25rem;
    color: #2c2c2c;
}

.lp-stat-note {
    font-weight: 700;
    color: #5a2db0;
}

.lp-stat-key {
    font-weight: 700;
    font-size: 1.08em;
    color: #c62828;
}

.lp-stat-key--accent {
    font-size: 1.12em;
    background: linear-gradient(transparent 58%, rgba(255, 235, 59, 0.65) 58%);
}

.lp-stat-forecast {
    font-weight: 700;
    font-size: 1.09em;
    color: #1565c0;
}

.lp-stat-pull {
    display: inline;
    font-weight: 700;
    color: #4a148c;
    border-bottom: 2px solid rgba(106, 27, 154, 0.35);
    padding-bottom: 0.05em;
}

.lp-stat-q {
    color: #0d47a1;
    font-weight: 800;
}

.lp-stat-chevron {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 0.5rem;
    margin: 1.75rem 0 1.25rem;
}

.lp-stat-chevron__icon {
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 12px solid #e91eac;
    filter: drop-shadow(0 1px 0 rgba(0, 0, 0, 0.15));
}

.lp-stat-banner {
    background: linear-gradient(135deg, #5b1fb8 0%, #7020a8 45%, #8e24aa 100%);
    border-radius: 12px;
    padding: clamp(1.35rem, 4vw, 2.25rem) 1rem;
    text-align: center;
    box-shadow: 0 6px 22px rgba(94, 36, 168, 0.45);
    margin-bottom: 0;
}

.lp-stat-banner__but {
    font-family: 'Dancing Script', cursive;
    font-size: clamp(2.2rem, 7vw, 3.4rem);
    font-weight: 700;
    line-height: 1.1;
    margin: 0 0 0.35rem;
    background: linear-gradient(180deg, #b3e5fc 0%, #ffffff 55%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 2px 3px rgba(0, 0, 0, 0.35));
}

.lp-stat-banner__main {
    margin: 0;
    font-size: clamp(1.25rem, 4vw, 1.85rem);
    font-weight: 700;
    color: #fff;
    line-height: 1.4;
    letter-spacing: 0.04em;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
}

@media screen and (max-width: 767px) {
    .lp-stat-catch__num {
        font-size: 1.28em;
    }

    .lp-stat-panel--body + .lp-stat-chevron {
        margin-top: 1.5rem;
    }
}

.about2-section {
    background: url(../img/bg001.png) no-repeat center center;
    background-size: cover;
}

.maim-bottom {
    background: linear-gradient(to right, #611ce9, #892de4);
    z-index: 1;
    position: relative;
}

.buy-title {
    font-size: 20px;
    font-weight: bold;
}

.buy-title2 {
    font-size: 20px;
    font-weight: bold;
}

.buy-btn {
    background: linear-gradient(to right, #00C9FF, #ce46f8);
    color: #fff;
    border: none;
    padding: 10px 40px;
    border-radius: 5px;
    font-weight: bold;
}

.buy-btn:hover,
.buy-btn:focus {
    color: #fff;
    filter: brightness(1.06);
}

.buy-btn--block {
    display: block;
    width: 100%;
    max-width: 420px;
    box-sizing: border-box;
}



.news-list-wrapper {
    width: 100%;
    position: relative;
    display: inline-block;
}

.news-list-wrapper::before {
    content: "";
    pointer-events: none;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 5px;
    border: 5px solid transparent;
    background: linear-gradient(135deg, rgb(21 199 255) 0%, rgb(111 55 215) 20%, rgb(207, 42, 186) 40%, rgb(238, 44, 130) 60%, rgb(251, 105, 98) 80%, rgb(255 191 0) 100%) border-box border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0) border-box;
    -webkit-mask-composite: destination-out;
    mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0) border-box;
    mask-composite: exclude;
}

.header-gradient {
    background: linear-gradient(135deg, #5a36c5, #ff2a8c);
    color: white;
    padding: 10px 20px;
    font-size: 20px;
    font-weight: bold;
    border-radius: 8px;
}

.news dt {
    border-bottom: 1px solid #a7a7a7;
    padding-bottom: 0.2rem;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.news h2 {
    font-weight: bold;
    font-size: 1.6rem;
    display: block;
    margin: 0 auto;
    width: fit-content;
    border-radius: 0;
    padding: 0.7rem 3rem;
    margin-bottom: -27px !important;
    z-index: 100;
    position: relative;
    transform: skewX(-5deg);
}

.news-list-wrapper {
    padding: 2rem;
    border-radius: 0.5rem;
}

.news-list {
    padding: 0rem 1rem;
    border-radius: 1rem;
    height: 8rem;
    overflow: auto;
    margin-top: 15px;
    margin-bottom: 15px;
}

.vertical-gradient {
    background: linear-gradient(to bottom, #3f2b47 0%, #511b9b 40%, #6bd0ff 100%);
}

.kochira-btn {
    position: fixed;
    right: 20px;
    top: 20px;
    z-index: 1000;
    width: 13%;
    max-width: 140px;
}

/* ラインナップ（3コース） */
.lineup-section {
    max-width: 1140px;
    margin-left: auto;
    margin-right: auto;
}

.lineup-lead {
    margin: 1.75rem auto 1rem;
    max-width: 40em;
    font-size: clamp(1rem, 2.4vw, 1.125rem);
    line-height: 1.85;
    color: #333;
    text-align: center;
    font-weight: 500;
}

.lineup-lead strong {
    font-weight: 700;
    color: #1a1a1a;
}

.lineup-tagline {
    margin: 0 auto 0.5rem;
    max-width: 42em;
    font-size: clamp(1.05rem, 2.6vw, 1.35rem);
    font-weight: 700;
    color: #111;
    line-height: 1.5;
    text-align: center;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.35rem 0.5rem;
}

.lineup-tagline__blue {
    color: #00a0e9;
    font-weight: 800;
}

.lineup-tagline__slash {
    color: #00a0e9;
    font-weight: 300;
    opacity: 0.65;
    font-size: 1.15em;
}

.lineup-cards {
    margin-top: 0.5rem;
    text-align: left;
}

.lineup-card {
    height: 100%;
    border-radius: 16px;
    padding: 1.25rem 1.25rem 1.5rem;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.lineup-card:hover {
    box-shadow: 0 10px 32px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
}

.lineup-card--lite {
    border-top: 4px solid #43a047;
    background: linear-gradient(180deg, #e8f5e9 0%, #f9fff9 24%, #fff 32%);
}

.lineup-card--standard {
    border-top: 4px solid #f9a825;
    background: linear-gradient(180deg, #fffbf0 0%, #fff 30%);
}

.lineup-card--premium {
    border-top: 4px solid #8e24aa;
    background: linear-gradient(180deg, #faf5fc 0%, #fff 30%);
}

.lineup-card__titleimg {
    display: block;
    width: 100%;
    max-width: 100%;
    margin: 0 auto 1rem;
    border-radius: 8px;
}

.lineup-card__list {
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: clamp(0.95rem, 2.2vw, 1.05rem);
    line-height: 1.65;
    color: #333;
}

.lineup-card__list li {
    position: relative;
    padding-left: 1.65em;
    margin-bottom: 0.5em;
}

.lineup-card__list li:last-child {
    margin-bottom: 0;
}

.lineup-card--lite .lineup-card__list li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    font-weight: 700;
    color: #2e7d32;
}

.lineup-card--standard .lineup-card__list li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    font-weight: 700;
    color: #ef6c00;
}

.lineup-card--premium .lineup-card__list li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    font-weight: 700;
    color: #7b1fa2;
}

/* 講座内容：コース別収録一覧テーブル */
.curriculum-table-wrap {
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.curriculum-table-lead {
    text-align: center;
    font-size: 0.95rem;
    color: #444;
    margin-bottom: 0.85rem;
    font-weight: 600;
}

.curriculum-table-box {
    border: 1px solid #dee2e6;
    overflow: hidden;
}

.curriculum-table {
    font-size: clamp(0.78rem, 1.6vw, 0.9rem);
    vertical-align: middle;
}

.curriculum-table thead th {
    white-space: nowrap;
    text-align: center;
    font-weight: 700;
}

.curriculum-table thead .curriculum-th-sec {
    font-size: clamp(1rem, 2.2vw, 1.15rem);
}

.curriculum-table .curriculum-th-ch {
    min-width: 12rem;
}

.curriculum-table .curriculum-th-mark {
    width: 4.5rem;
}

.curriculum-table tbody th.curriculum-sec {
    vertical-align: middle;
    font-weight: 700;
    font-size: clamp(1rem, 2.4vw, 1.2rem);
    line-height: 1.4;
    background: #f8f9fb;
    border-right: 2px solid #e9ecef;
}

.curriculum-table .curriculum-ch {
    text-align: left;
    line-height: 1.45;
}

.curriculum-table .curriculum-mark {
    text-align: center;
    font-weight: 700;
    color: #333;
}

.curriculum-table tbody tr:nth-child(even) td:not(.curriculum-sec) {
    background: #fcfcfd;
}

.tokuten {
    background: #fffde4;
    margin: 4rem 0 0rem;
    padding: 6rem 0;
}

@media screen and (min-width: 1300px) {
    .kochira-btn {
        position: fixed;
        right: calc((100% - 1350px) / 2 + 20px);
        top: 20px;
    }
}

@media (min-width: 1400px) {

    .container,
    .container-lg,
    .container-md,
    .container-sm,
    .container-xl,
    .container-xxl {
        max-width: 1140px;
    }
}

/* フッター（コピッペ製品ページと同等のトーン・構成） */
.site-footer {
    position: relative;
    z-index: 10;
    background: #0f172a;
    padding-top: 3.5rem;
    padding-bottom: 2rem;
}

.site-footer__grid {
    margin-bottom: 2.5rem;
    row-gap: 2rem;
}

.site-footer__brand-row {
    margin-bottom: 0.65rem;
}

.site-footer__logo-link {
    display: inline-block;
    line-height: 0;
}

.site-footer__logo-link:focus-visible {
    outline: 2px solid #94a3b8;
    outline-offset: 4px;
}

.site-footer__logo {
    max-width: 210px;
    width: 100%;
    height: auto;
    display: block;
}

.site-footer__product-name {
    font-weight: 900;
    font-size: clamp(1.15rem, 2.8vw, 1.45rem);
    letter-spacing: -0.02em;
    color: #fff;
    line-height: 1.4;
    margin: 0 0 0.85rem;
}

.site-footer__desc {
    font-size: 0.875rem;
    color: #94a3b8;
    line-height: 1.65;
    max-width: 28rem;
    margin: 0;
}

.site-footer__heading {
    font-weight: 700;
    font-size: 0.8125rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #fff;
    margin: 0 0 1rem;
}

.site-footer__links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-footer__links li {
    margin-bottom: 0.55rem;
}

.site-footer__links li:last-child {
    margin-bottom: 0;
}

.site-footer__links a {
    font-size: 0.875rem;
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.15s ease;
}

.site-footer__links a:hover {
    color: #fff;
}

.site-footer__bottom {
    border-top: 1px solid #334155;
    padding-top: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
}

@media (min-width: 768px) {
    .site-footer__bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        text-align: left;
    }
}

.site-footer__copyright {
    font-size: 0.875rem;
    color: #64748b;
    margin: 0;
}

.site-footer__meta {
    font-size: 0.75rem;
    color: #64748b;
    margin: 0;
}

/* フッターからのアンカー移動時に上部が隠れないようにする */
#overview,
#course-content,
#video,
#buy-section,
#system,
#faq {
    scroll-margin-top: 0.75rem;
}