/* ==========================================================================
   Buen Fin 2026 · 活动页样式
   所有规则都限定在 .bf-page 内，避免污染站内 0917header / 0308footer 的全局样式。
   原型里 body / header / section / footer / code / a 等全局选择器均已命名空间化。
   ========================================================================== */

.bf-page {
    --bf-bg: #fff;
    --bf-fg: #212121;
    --bf-mut: #757575;
    --bf-card: #f7f7f7;
    --bf-line: #e0e0e0;
    --bf-or: #ff6900;
    --bf-inv: #212121;
    --bf-invfg: #fff;
    background: var(--bf-bg);
    color: var(--bf-fg);
    font-family: "Helvetica Neue", Arial, system-ui, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    color-scheme: light;
    overflow: hidden;
}

@media (prefers-color-scheme: dark) {
    .bf-page:not([data-theme="light"]),
    .bf-page[data-theme="dark"] {
        --bf-bg: #141414;
        --bf-fg: #f2f2f2;
        --bf-mut: #a0a0a0;
        --bf-card: #1f1f1f;
        --bf-line: #333;
        --bf-inv: #ff6900;
        --bf-invfg: #111;
        color-scheme: dark;
    }
}

.bf-page[data-theme="dark"] {
    --bf-bg: #141414;
    --bf-fg: #f2f2f2;
    --bf-mut: #a0a0a0;
    --bf-card: #1f1f1f;
    --bf-line: #333;
    --bf-inv: #ff6900;
    --bf-invfg: #111;
    color-scheme: dark;
}

.bf-page,
.bf-page *,
.bf-page *:before,
.bf-page *:after { box-sizing: border-box; }

.bf-page a { color: inherit; text-decoration: none; }
.bf-page img { display: block; max-width: 100%; }

.bf-page .bf-w {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 活动品牌条（站内已有商城 header，这里只做活动标识，不重复放导航） */
.bf-page .bf-brand {
    background: var(--bf-bg);
    border-bottom: 1px solid var(--bf-line);
}
.bf-page .bf-brand .bf-w {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    gap: 16px;
}
.bf-page .bf-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 18px;
}
.bf-page .bf-logo i {
    background: var(--bf-or);
    color: #fff;
    font-style: normal;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: grid;
    place-items: center;
    font-weight: 800;
}
.bf-page .bf-brand-tag {
    font-size: 13px;
    color: var(--bf-mut);
}

/* Hero：模块 1 只提供 banner 图 + banner 下方一行通知
   banner 图由后台上传，作为 hero 的完整视觉主体铺满整行（不透明、完整显示）。
   banner 图下方（通知/倒计时/按钮）落在深色背景上，保证白字可读；
   不再使用会与上传图产生色差拼接的橙色渐变背景。 */
.bf-page .bf-hero {
    background: #1f1f1f;
    color: #fff;
    text-align: center;
    padding: 0 0 56px;
}
.bf-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    border: 0;
}
.bf-page .bf-banner {
    display: block;
    width: 100%;
    height: auto;
    margin: 0 auto;
}
.bf-page .bf-notice {
    max-width: 1200px;
    margin: 0 auto;
    padding: 14px 24px;
    background: rgba(0, 0, 0, .22);
    font-size: clamp(14px, 2vw, 18px);
    line-height: 1.5;
}
.bf-page .bf-hero .bf-btn {
    margin-top: 28px;
}
.bf-page .bf-btn {
    display: inline-block;
    background: #ff6900;
    color: #fff;
    padding: 14px 36px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 15px;
    border: 0;
    cursor: pointer;
    font-family: inherit;
    box-shadow: 0 6px 20px rgba(255, 105, 0, .35);
    transition: background .15s ease, transform .15s ease;
}
.bf-page .bf-btn:hover {
    background: #ff7a1a;
    transform: translateY(-1px);
}
.bf-page .bf-hero .bf-countdown {
    margin: 32px auto 0;
    text-align: center;
}
.bf-page .bf-countdown-title {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: .04em;
    opacity: .95;
    margin-bottom: 14px;
}
.bf-page .bf-countdown-boxes {
    display: flex;
    justify-content: center;
    gap: 10px;
}
.bf-page .bf-count-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 72px;
    padding: 12px 8px 10px;
    background: rgba(0, 0, 0, .22);
    border-radius: 12px;
}
.bf-page .bf-count-unit b {
    font-size: 34px;
    font-weight: 800;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}
.bf-page .bf-count-unit span {
    margin-top: 6px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .03em;
    opacity: .9;
    text-transform: lowercase;
}
@media (max-width: 520px) {
    .bf-page .bf-countdown-boxes { gap: 6px; }
    .bf-page .bf-count-unit { min-width: 60px; padding: 10px 6px 8px; border-radius: 10px; }
    .bf-page .bf-count-unit b { font-size: 28px; }
    .bf-page .bf-count-unit span { font-size: 11px; }
}

/* 状态提示条 */
.bf-page .bf-status {
    background: #fff4e8;
    color: #8a3b00;
    border-bottom: 1px solid #ffd6b0;
    padding: 12px 24px;
    text-align: center;
    font-size: 14px;
}
@media (prefers-color-scheme: dark) {
    .bf-page .bf-status { background: #3a2612; color: #ffd6b0; border-color: #6b4522; }
}

/* 活动内锚点导航：站内 header 是 fixed，这里不做 sticky 以免层叠冲突 */
.bf-page .bf-tabs {
    background: var(--bf-bg);
    border-bottom: 1px solid var(--bf-line);
}
.bf-page .bf-tabs .bf-w {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    justify-content: center;
}
.bf-page .bf-tabs a {
    padding: 18px 20px;
    font-size: 15px;
    white-space: nowrap;
    border-bottom: 3px solid transparent;
    color: var(--bf-mut);
}
.bf-page .bf-tabs a:hover { color: var(--bf-or); border-color: var(--bf-or); }

/* 通用区块 */
.bf-page .bf-section {
    padding: 72px 0;
    scroll-margin-top: 90px;
}
.bf-page .bf-title {
    margin: 0 0 8px;
    font-size: clamp(26px, 4vw, 40px);
    font-weight: 700;
    text-align: center;
    line-height: 1.2;
}
.bf-page .bf-sub {
    margin: 0 auto 36px;
    max-width: 640px;
    text-align: center;
    color: var(--bf-mut);
    font-size: 16px;
}
.bf-page .bf-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}
.bf-page .bf-alt { background: var(--bf-card); }
.bf-page .bf-dark { background: #212121; color: #fff; }
.bf-page .bf-dark .bf-sub { color: #ccc; }

/* 阶梯券 */
.bf-page .bf-tier {
    background: var(--bf-card);
    border-radius: 12px;
    padding: 32px 24px;
    text-align: center;
}
.bf-page .bf-tier span { color: var(--bf-mut); font-size: 14px; }
.bf-page .bf-tier .bf-tier-name {
    display: block;
    margin: 0 0 16px;
    color: var(--bf-fg, #222);
    font-size: 16px;
    font-weight: 700;
    line-height: 1.35;
}
.bf-page .bf-tier .bf-tier-valid { display: block; margin-top: 12px; font-size: 12px; }
.bf-page .bf-tier b {
    display: block;
    font-size: 54px;
    margin: 8px 0 2px;
    color: var(--bf-or);
    line-height: 1.1;
}
.bf-page .bf-tier.bf-featured { background: var(--bf-inv); color: var(--bf-invfg); }
.bf-page .bf-tier.bf-featured span { color: inherit; opacity: .8; }
.bf-page .bf-tier.bf-featured .bf-tier-name { color: inherit; opacity: 1; }
.bf-page .bf-tier.bf-featured b { color: inherit; }
.bf-page .bf-tier-claim {
    display: inline-block;
    margin-top: 14px;
    font: inherit;
    font-size: 14px;
    font-weight: 700;
    padding: 9px 22px;
    border-radius: 999px;
    border: 0;
    background: var(--bf-or);
    color: #fff;
    cursor: pointer;
}
.bf-page .bf-tier-feedback { min-height: 18px; margin: 8px 0 0; font-size: 13px; }
.bf-page .bf-tier-feedback.is-ok { color: #1a8a4a; }
.bf-page .bf-tier-feedback.is-error { color: #d33; }

/* 银行 / 信贷 */
.bf-page .bf-bank {
    background: var(--bf-bg);
    border-radius: 12px;
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 14px;
}
.bf-page .bf-bank h3 { margin: 0; font-size: 20px; }
.bf-page .bf-bank .bf-big { font-size: 26px; color: var(--bf-or); line-height: 1.2; }
.bf-page .bf-bank .bf-m { color: var(--bf-mut); }
.bf-page .bf-code {
    background: var(--bf-card);
    border: 1px dashed var(--bf-or);
    border-radius: 6px;
    padding: 2px 8px;
    font-weight: 700;
}
.bf-page .bf-bank .bf-terms { font-size: 13px; text-decoration: underline; }

/* 商品筛选 */
.bf-page .bf-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-bottom: 32px;
}
.bf-page .bf-chips button {
    font: inherit;
    font-size: 14px;
    font-weight: 600;
    min-height: 44px;
    padding: 0 20px;
    border-radius: 999px;
    border: 1px solid var(--bf-line);
    background: var(--bf-bg);
    color: var(--bf-fg);
    cursor: pointer;
}
.bf-page .bf-chips button.on { background: var(--bf-or); border-color: var(--bf-or); color: #fff; }
.bf-page .bf-pg {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
}
.bf-page .bf-p {
    background: var(--bf-bg);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    border: 1px solid var(--bf-line);
}
.bf-page .bf-alt .bf-p { border-color: transparent; }
.bf-page .bf-p .bf-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--bf-mut);
}
.bf-page .bf-p .bf-off {
    background: var(--bf-or);
    color: #fff;
    font-weight: 700;
    padding: 3px 9px;
    border-radius: 999px;
}
.bf-page .bf-p .bf-img {
    height: 200px;
    border-radius: 8px;
    background: var(--bf-card);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    letter-spacing: .1em;
    color: var(--bf-mut);
    font-size: 20px;
    overflow: hidden;
}
.bf-page .bf-p .bf-img img { width: 100%; height: 100%; object-fit: contain; }
.bf-page .bf-p h4 { margin: 0; font-size: 15px; font-weight: 600; line-height: 1.3; flex: 1; }
.bf-page .bf-p .bf-v { font-size: 12px; color: var(--bf-mut); }
.bf-page .bf-p .bf-pr { display: flex; gap: 8px; align-items: baseline; }
.bf-page .bf-p .bf-pr b { font-size: 20px; }
.bf-page .bf-p .bf-pr s { font-size: 13px; color: var(--bf-mut); }
.bf-page .bf-p .bf-buy {
    font-size: 13px;
    font-weight: 700;
    color: var(--bf-or);
    padding-top: 4px;
}
.bf-page .bf-more { text-align: center; margin-top: 28px; }
.bf-page .bf-more button {
    font: inherit;
    font-weight: 700;
    padding: 14px 36px;
    border-radius: 999px;
    border: 2px solid var(--bf-or);
    background: none;
    color: var(--bf-or);
    cursor: pointer;
}
.bf-page .bf-empty { text-align: center; color: var(--bf-mut); grid-column: 1 / -1; }

/* 拍卖 */
.bf-page .bf-auction-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.bf-page .bf-a {
    border: 1px solid #444;
    border-radius: 12px;
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.bf-page .bf-a b { font-size: 17px; }
.bf-page .bf-a span { color: #bbb; font-size: 13px; }
.bf-page .bf-a strong { font-size: 30px; color: var(--bf-or); }
.bf-page .bf-a .bf-a-link { color: var(--bf-or); font-weight: 700; font-size: 13px; margin-top: 6px; }

/* 活动页脚（站内 footer.lbi 之外） */
.bf-page .bf-footer {
    padding: 36px 0;
    font-size: 13px;
    color: var(--bf-mut);
    text-align: center;
    border-top: 1px solid var(--bf-line);
}
.bf-page .bf-footer a { color: var(--bf-or); text-decoration: underline; }

@media (max-width: 700px) {
    .bf-page .bf-brand .bf-w { height: 52px; }
    .bf-page .bf-brand-tag { display: none; }
    .bf-page .bf-hero { padding: 0 0 40px; }
    .bf-page .bf-section { padding: 48px 0; }
    .bf-page .bf-tabs .bf-w { justify-content: flex-start; }
}