/* =====================================================================
 * 45 · 银行卡年费多少 —— 独立设计
 * 视觉原型：年度用量账本 + CSS 绘制的卡片货架 + 横向成本条形图。
 * 与前面各页不同：深蓝 / 香槟金、大号等宽金额、卡片式实体隐喻。
 * ===================================================================== */
.p45 {
    --g5c-bg: #f5f7fa;
    --g5c-bg2: #e8eef5;
    --g5c-surface: #ffffff;
    --g5c-surface2: #f4f7fb;
    --g5c-ink: #14283f;
    --g5c-ink2: #4a5d73;
    --g5c-muted: #8798ab;
    --g5c-line: #dbe4ee;
    --g5c-line2: #c2d0e0;
    --g5c-accent: #1c4f82;
    --g5c-accent2: #b8892f;
    --g5c-on: #ffffff;
    --g5d-bg: #0c1420;
    --g5d-bg2: #131f2e;
    --g5d-surface: #162337;
    --g5d-surface2: #1c2c42;
    --g5d-ink: #edf3fa;
    --g5d-ink2: #b3c4d8;
    --g5d-muted: #8296ad;
    --g5d-line: #293c53;
    --g5d-line2: #3a5270;
    --g5d-accent: #7fb0e8;
    --g5d-accent2: #e0bb72;
    --g5d-on: #0c1420;
    --g5-h: "Inter", "HarmonyOS Sans SC", "PingFang SC", system-ui, sans-serif;
    --g5-body: 14.6px;
    --g5-lh: 1.82;
    --g5-r: 13px;
}

/* ---------- 首屏 ---------- */
.bfc-hero { display: grid; grid-template-columns: 1.06fr .94fr; gap: 32px; padding: 12px 0 30px; }
.bfc-kicker { font-family: var(--g5-m); font-size: 10.8px; font-weight: 700; letter-spacing: .16em; color: var(--g5-accent2); margin-bottom: 18px; }
.bfc-hero h1 { font-size: clamp(2.3rem, 4.6vw, 3.5rem); line-height: 1.16; letter-spacing: -.04em; margin: 0 0 17px; }
.bfc-hero h1 em { font-style: normal; color: var(--g5-accent2); }
.bfc-lede { max-width: 600px; font-size: 15.6px; line-height: 1.92; color: var(--g5-ink2); margin-bottom: 22px; }
.bfc-lede b { color: var(--g5-ink); }
.bfc-facts { display: grid; gap: 9px; max-width: 520px; }
.bfc-facts > div { display: flex; align-items: baseline; gap: 13px; padding: 7px 0 7px 13px; border-left: 2px solid var(--g5-accent2); }
.bfc-facts b { font-size: 13.4px; white-space: nowrap; }
.bfc-facts small { color: var(--g5-muted); font-size: 12.2px; line-height: 1.7; }
.bfc-disclaimer { margin-top: 20px; font-size: 12.3px; color: var(--g5-muted); line-height: 1.8; }

.bfc-usage {
    background: linear-gradient(155deg, var(--g5-accent) 0%, #10314f 100%);
    border-radius: 18px; padding: 20px; color: #fff; box-shadow: 0 18px 40px rgba(20, 50, 85, .22);
}
:root[data-theme="dark"] .bfc-usage { background: linear-gradient(155deg, #1d3a5c, #122538); }
.bfc-usage-hd { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; padding-bottom: 13px; border-bottom: 1px solid rgba(255, 255, 255, .22); }
.bfc-usage-hd b { font-size: 15px; letter-spacing: .03em; }
.bfc-usage-hd span { font-family: var(--g5-m); font-size: 11px; color: rgba(255, 255, 255, .72); }
.bfc-usage-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; padding: 17px 0; }
.bfc-usage-grid label > span { display: block; font-size: 11.5px; color: rgba(255, 255, 255, .78); margin-bottom: 5px; }
.p45 .bfc-usage-grid input,
:root[data-theme="dark"] .p45 .bfc-usage-grid input {
    background: rgba(255, 255, 255, .1); color: #fff;
    border: 1px solid rgba(255, 255, 255, .28); font-family: var(--g5-m); font-size: 13px;
}
.p45 .bfc-usage-grid input::placeholder { color: rgba(255, 255, 255, .5); }
.p45 .bfc-usage-grid input:hover, .p45 .bfc-usage-grid input:focus { border-color: #e7c985; box-shadow: 0 0 0 3px rgba(231, 201, 133, .2); }
.bfc-usage-ft { display: flex; gap: 9px; flex-wrap: wrap; }
.bfc-usage-ft .g5-btn--main { background: #e2bd76; border-color: #e2bd76; color: #182c40; box-shadow: none; }
.bfc-usage-ft .g5-btn--ghost { color: #fff; border-color: rgba(255, 255, 255, .45); }
.bfc-msg { margin-top: 13px; padding: 9px 12px; border-radius: 7px; background: rgba(255, 255, 255, .16); font-size: 12.2px; line-height: 1.7; }
.bfc-msg.is-err { background: #f7d9dc; color: #8b2632; }

/* ---------- 章节标题 ---------- */
.bfc-sec-hd { display: flex; align-items: center; gap: 11px; padding-bottom: 12px; border-bottom: 1px solid var(--g5-line); margin-bottom: 16px; }
.bfc-sec-hd > i { font-family: var(--g5-m); font-style: normal; font-size: 10.5px; font-weight: 700; color: var(--g5-accent2); background: var(--g5-bg2); padding: 3px 7px; border-radius: 5px; }
.bfc-sec-hd h2 { font-size: 18px; }
.bfc-sec-hd > span { margin-left: auto; font-size: 11.8px; color: var(--g5-muted); }

/* ---------- 添加卡片 ---------- */
.bfc-add, .bfc-shelf, .bfc-detail {
    margin-top: 24px; padding: 20px 22px 22px;
    background: var(--g5-surface); border: 1px solid var(--g5-line);
    border-radius: var(--g5-r); box-shadow: var(--g5-shadow);
}
.bfc-add-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.bfc-add-grid label { min-width: 0; }
.bfc-add-grid label > span { display: block; font-size: 11.5px; font-weight: 700; color: var(--g5-ink2); margin-bottom: 5px; }
.bfc-add-grid label > span b { color: var(--g5-bad); }
.bfc-add-grid input, .bfc-add-grid select { font-size: 12.6px; padding: 7px 9px; font-family: var(--g5-m); }
.bfc-add-grid .bfc-span2 { grid-column: span 2; }
.bfc-err { margin-top: 12px; padding: 9px 13px; border-radius: 7px; background: var(--g5-badbg); color: var(--g5-bad); font-size: 12.6px; }

/* ---------- 卡片货架 ---------- */
.bfc-cards { display: flex; flex-wrap: wrap; gap: 16px; min-height: 40px; }
.bfc-placeholder { font-size: 12.9px; color: var(--g5-muted); line-height: 1.9; margin: 0; }
.bfc-card {
    position: relative; width: 258px; min-height: 156px; flex: none;
    border-radius: 14px; padding: 16px 17px; color: #fff;
    background: linear-gradient(135deg, #244a72 0%, #142c47 62%, #0e2237 100%);
    box-shadow: 0 12px 26px rgba(14, 34, 55, .24); overflow: hidden;
}
.bfc-card.is-best { background: linear-gradient(135deg, #a57b2c 0%, #7c5a1e 60%, #5d4316 100%); }
.bfc-card::after {
    content: ''; position: absolute; right: -40px; top: -50px; width: 150px; height: 150px;
    border-radius: 50%; background: rgba(255, 255, 255, .07);
}
.bfc-card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.bfc-card-name { font-size: 14.5px; font-weight: 750; letter-spacing: .01em; }
.bfc-card-kind { font-size: 10.5px; padding: 2px 8px; border: 1px solid rgba(255, 255, 255, .4); border-radius: 999px; }
.bfc-chip { width: 32px; height: 23px; border-radius: 5px; margin: 17px 0 12px; background: linear-gradient(135deg, #e8d19a, #b99a55); position: relative; }
.bfc-chip::after { content: ''; position: absolute; inset: 5px 8px; border: 1px solid rgba(80, 60, 20, .55); border-radius: 2px; }
.bfc-card-no { font-family: var(--g5-m); font-size: 11.5px; letter-spacing: .13em; color: rgba(255, 255, 255, .74); }
.bfc-card-cost { margin-top: 10px; display: flex; align-items: baseline; gap: 8px; }
.bfc-card-cost b { font-family: var(--g5-m); font-size: 21px; font-variant-numeric: tabular-nums; }
.bfc-card-cost small { font-size: 10.8px; color: rgba(255, 255, 255, .7); }
.bfc-card-tag { position: absolute; right: 14px; bottom: 14px; font-size: 10px; padding: 2px 8px; border-radius: 999px; background: rgba(255, 255, 255, .18); }
.bfc-bars { margin-top: 20px; display: grid; gap: 9px; }
.bfc-bar-row { display: grid; grid-template-columns: 132px 1fr 92px; align-items: center; gap: 12px; font-size: 12px; }
.bfc-bar-row > span { color: var(--g5-ink2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bfc-bar-track { height: 12px; border-radius: 99px; background: var(--g5-bg2); overflow: hidden; }
.bfc-bar-fill { height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--g5-accent), #5a8dbd); transition: width .3s ease; }
.bfc-bar-row.is-best .bfc-bar-fill { background: linear-gradient(90deg, var(--g5-accent2), #e0bb72); }
.bfc-bar-row > b { font-family: var(--g5-m); text-align: right; color: var(--g5-ink); }

/* ---------- 明细表 ---------- */
.bfc-table { width: 100%; min-width: 760px; font-size: 12.7px; }
.bfc-table th { text-align: left; padding: 10px; font-size: 11.3px; color: var(--g5-muted); border-bottom: 1px solid var(--g5-line2); white-space: nowrap; }
.bfc-table td { padding: 11px 10px; border-bottom: 1px solid var(--g5-line); color: var(--g5-ink2); line-height: 1.75; }
.bfc-table tr:last-child td { border-bottom: 0; }
.bfc-table .bfc-name { font-weight: 750; color: var(--g5-ink); }
.bfc-table .g5-num { font-family: var(--g5-m); font-weight: 700; }
.bfc-table .bfc-total { font-family: var(--g5-m); font-weight: 800; color: var(--g5-accent2); }
.bfc-empty { text-align: center; color: var(--g5-muted); padding: 26px 10px !important; }
.bfc-del { border: 0; background: transparent; color: var(--g5-muted); font-size: 16px; padding: 2px 6px; border-radius: 6px; }
.bfc-del:hover { color: var(--g5-bad); background: var(--g5-badbg); }
.bfc-batch { margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--g5-line); }
.bfc-hint { font-size: 12.4px; line-height: 1.85; color: var(--g5-ink2); margin: 0 0 10px; }
.bfc-batch textarea { font-family: var(--g5-m); font-size: 12.3px; line-height: 1.75; }
.bfc-clean { display: flex; align-items: center; flex-wrap: wrap; gap: 9px; margin-top: 12px; padding: 11px; border: 1px dashed var(--g5-line2); border-radius: 9px; background: var(--g5-surface2); }
.bfc-clean > b { font-size: 11.8px; color: var(--g5-ink2); }
.g5-check { display: inline-flex; align-items: center; gap: 6px; padding: 4px 9px; border: 1px solid var(--g5-line); border-radius: 6px; background: var(--g5-surface); color: var(--g5-ink2); font-size: 11.4px; font-weight: 650; cursor: pointer; user-select: none; }
.g5-check input { width: 14px; height: 14px; margin: 0; }
.g5-check.is-on { border-color: var(--g5-accent2); color: var(--g5-accent2); background: var(--g5-bg2); }
#bfcPreview { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 10.8px; }

/* ---------- 阅读区 ---------- */
.bfc-read { margin-top: 40px; padding: 26px 30px 8px; border-top: 2px solid var(--g5-ink); }
.bfc-read h2 { font-size: 21px; margin-bottom: 16px; }
.bfc-read p { font-size: 14.1px; line-height: 2.05; color: var(--g5-ink2); margin-bottom: 15px; }
.bfc-read b { color: var(--g5-accent2); }

@media (max-width: 1080px) {
    .bfc-hero { grid-template-columns: 1fr; }
    .bfc-add-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
    .bfc-add-grid { grid-template-columns: 1fr 1fr; }
    .bfc-add-grid .bfc-span2 { grid-column: span 2; }
    .bfc-usage-grid { grid-template-columns: 1fr 1fr; }
    .bfc-add, .bfc-shelf, .bfc-detail { padding: 16px 14px 18px; }
    .bfc-card { width: 100%; }
    .bfc-bar-row { grid-template-columns: 96px 1fr 76px; gap: 8px; }
    .bfc-read { padding: 22px 16px 6px; }
}