@charset "utf-8";

/* ==========================================================================
   기기소개 (/bike)   — 모바일 우선
   ========================================================================== */

/* 제품 개요 --------------------------------------------------------------- */

.bike-intro {
    display: flex;
    flex-direction: column;
    gap: 28px;
    padding: 40px 0 48px;
    border-bottom: 1px solid var(--color-line);
}

.bike-intro__media {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
}

.bike-intro__media img {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    object-fit: contain;
}

.bike-intro__brand {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .18em;
    color: var(--color-muted);
}

.bike-intro__model {
    margin-top: 6px;
    font-size: 32px;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.03em;
}

.bike-intro__color {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    font-size: 14px;
    color: var(--color-muted);
}

.swatch {
    width: 16px;
    height: 16px;
    border: 1px solid var(--color-line);
    border-radius: 50%;
    /* 실리카 베이지 */
    background: #DDD5C4;
}

.bike-intro__lead {
    margin: 16px 0 26px;
    font-size: 16px;
    color: var(--color-muted);
}

/* 섹션 공통 --------------------------------------------------------------- */

.bike-section { padding: 44px 0; }

.bike-section + .bike-section { border-top: 1px solid var(--color-line); }

.bike-section__title {
    font-size: 21px;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.bike-section__lead {
    margin-top: 8px;
    font-size: 14px;
    color: var(--color-muted);
}

.bike-section__title + .hl-grid,
.bike-section__title + .acc-list,
.bike-section__title + .spec-group { margin-top: 22px; }

.bike-section__lead + .table-scroll,
.bike-section__lead + .acc-list { margin-top: 20px; }

/* 핵심 스펙 --------------------------------------------------------------- */

.hl-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1px;
    background: var(--color-line);
    border: 1px solid var(--color-line);
}

.hl-card {
    padding: 22px 20px;
    background: var(--color-bg);
}

.hl-card__value {
    font-size: 34px;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.hl-card__unit {
    margin-left: 4px;
    font-size: 15px;
    font-weight: 700;
    color: var(--color-muted);
}

.hl-card__label {
    display: block;
    margin-top: 10px;
    font-size: 15px;
    font-weight: 700;
}

.hl-card__desc {
    margin-top: 4px;
    font-size: 13px;
    color: var(--color-muted);
}

/* 사이즈 표 --------------------------------------------------------------- */

/* 좁은 화면에서 표만 가로 스크롤 (페이지 전체가 밀리지 않게) */
.table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.size-table {
    width: 100%;
    min-width: 420px;
    border-collapse: collapse;
    font-size: 14px;
}

.size-table th,
.size-table td {
    padding: 13px 14px;
    text-align: left;
    border-bottom: 1px solid var(--color-line);
    white-space: nowrap;
}

.size-table thead th {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-muted);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
}

.size-table tbody th {
    font-weight: 700;
}

.size-table tbody td {
    color: var(--color-muted);
}

/* 상세 스펙 (네이티브 details) --------------------------------------------- */

.spec-group {
    border-bottom: 1px solid var(--color-line);
}

.spec-group:first-of-type {
    border-top: 1px solid var(--color-line);
}

.spec-group__summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 56px;           /* 터치 타겟 */
    padding: 10px 0;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    list-style: none;
    user-select: none;
}

/* 기본 삼각형 마커 제거 */
.spec-group__summary::-webkit-details-marker { display: none; }
.spec-group__summary::marker { content: ''; }

/* +/− 아이콘 */
.spec-group__summary::after {
    content: '';
    flex: 0 0 auto;
    width: 13px;
    height: 13px;
    margin-left: 16px;
    background:
        linear-gradient(var(--color-fg), var(--color-fg)) center/13px 1.5px no-repeat,
        linear-gradient(var(--color-fg), var(--color-fg)) center/1.5px 13px no-repeat;
    transition: transform .2s ease;
}

.spec-group[open] .spec-group__summary::after {
    /* 세로줄을 지워 − 로 */
    background: linear-gradient(var(--color-fg), var(--color-fg)) center/13px 1.5px no-repeat;
    transform: rotate(180deg);
}

.spec-group__summary:focus-visible {
    outline: 2px solid var(--color-fg);
    outline-offset: 2px;
}

.spec-list {
    padding-bottom: 14px;
}

.spec-list__row {
    display: flex;
    flex-direction: column;
    gap: 3px;
    padding: 12px 0;
    border-top: 1px solid var(--color-line);
}

.spec-list__row dt {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-muted);
}

.spec-list__row dd {
    margin: 0;
    font-size: 14.5px;
    line-height: 1.55;
}

/* 기본 포함 --------------------------------------------------------------- */

.acc-list {
    border-top: 1px solid var(--color-line);
}

.acc-list li {
    position: relative;
    padding: 13px 0 13px 24px;
    border-bottom: 1px solid var(--color-line);
    font-size: 14.5px;
}

.acc-list li::before {
    content: '';
    position: absolute;
    top: 23px;
    left: 4px;
    width: 5px;
    height: 5px;
    background: var(--color-fg);
    border-radius: 50%;
}

/* CTA --------------------------------------------------------------------- */

.bike-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    margin-top: 8px;
    padding: 44px 20px;
    background: var(--color-inverse-bg);
    color: var(--color-inverse-fg);
    text-align: center;
}

.bike-cta__text {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.bike-cta .btn { width: 100%; max-width: 320px; }

/* ── 태블릿 이상 ───────────────────────────────────────────────────────── */

@media (min-width: 641px) {
    .bike-intro { padding: 56px 0 60px; }
    .bike-intro__model { font-size: 38px; }
    .bike-intro__lead { font-size: 17px; }

    .bike-section { padding: 60px 0; }
    .bike-section__title { font-size: 24px; }

    .hl-grid { grid-template-columns: repeat(2, 1fr); }

    .size-table { min-width: 0; }

    .spec-list__row {
        flex-direction: row;
        gap: 24px;
        padding: 13px 0;
    }

    .spec-list__row dt { flex: 0 0 148px; padding-top: 1px; }
    .spec-list__row dd { flex: 1 1 auto; }

    .bike-cta { padding: 60px 24px; }
    .bike-cta__text { font-size: 21px; }
    .bike-cta .btn { width: auto; }
}

/* ── 데스크톱 ─────────────────────────────────────────────────────────── */

@media (min-width: 861px) {
    .bike-intro {
        flex-direction: row;
        align-items: center;
        gap: 56px;
        padding: 72px 0;
    }

    .bike-intro__media { flex: 0 0 52%; }
    .bike-intro__body  { flex: 1 1 auto; }

    .bike-intro__model { font-size: 44px; }

    .hl-grid { grid-template-columns: repeat(4, 1fr); }
}