/* ==========================================================================
   119 · 滚动轴承 L10 寿命计算
   视觉概念：设备点检牌 / 轴承样本页 —— 钢青 + 铜橙 + 冷灰，横向寿命标尺
   ========================================================================== */

:root {
    --bl-bg: #f3f5f4;
    --bl-card: #ffffff;
    --bl-card-2: #e9eeec;
    --bl-ink: #14201d;
    --bl-ink-2: #3d4c47;
    --bl-muted: #76847e;
    --bl-line: #d7dedb;
    --bl-line-2: #c3ccc8;
    --bl-grid-line: rgba(20, 32, 29, .045);
    --bl-cyan: #1f6a72;
    --bl-cyan-soft: #e3f1f2;
    --bl-copper: #a8621f;
    --bl-copper-soft: #fbf0e2;
    --bl-bad: #a8392b;
    --bl-bad-soft: #fbece9;
    --bl-ok: #2b6b4c;
    --bl-shadow: 0 18px 38px -36px rgba(20, 32, 29, .5);
    --bl-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    --bl-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

:root[data-theme="dark"] {
    --bl-bg: #0d1211;
    --bl-card: #151c1a;
    --bl-card-2: #1b2422;
    --bl-ink: #e6ece9;
    --bl-ink-2: #aebbb5;
    --bl-muted: #7b8983;
    --bl-line: #25302c;
    --bl-line-2: #33413c;
    --bl-grid-line: rgba(230, 236, 233, .04);
    --bl-cyan: #6fc0c6;
    --bl-cyan-soft: #10262a;
    --bl-copper: #d99a5b;
    --bl-copper-soft: #2a1e13;
    --bl-bad: #e08d7f;
    --bl-bad-soft: #2b1613;
    --bl-ok: #5cbf8d;
    --bl-shadow: 0 18px 42px -34px rgba(0, 0, 0, .9);
}

/* ---------------- 首屏 ---------------- */
.bl-hero {
    padding: 28px 0 0;
    background-image:
        linear-gradient(var(--bl-grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--bl-grid-line) 1px, transparent 1px);
    background-size: 26px 26px;
}
.bl-hero-in {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 292px;
    gap: 34px;
    align-items: center;
    padding-bottom: 28px;
}
.bl-crumb {
    display: flex;
    align-items: center;
    gap: 7px;
    margin-bottom: 14px;
    font-size: 12.5px;
    color: var(--bl-muted);
}
.bl-crumb a { color: var(--bl-muted); text-decoration: none; }
.bl-crumb a:hover { color: var(--bl-cyan); }
.bl-crumb i { font-style: normal; opacity: .5; }

.bl-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 11px;
    font-family: var(--bl-mono);
    font-size: 11px;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--bl-copper);
}
.bl-eyebrow::before {
    content: "";
    width: 18px;
    height: 3px;
    background: currentColor;
}
.bl-h1 {
    margin: 0 0 12px;
    font-family: var(--bl-sans);
    font-size: clamp(27px, 3.1vw, 38px);
    line-height: 1.24;
    font-weight: 800;
    letter-spacing: -.03em;
    color: var(--bl-ink);
}
.bl-h1 em {
    font-style: normal;
    color: var(--bl-cyan);
    position: relative;
    z-index: 0;
}
.bl-h1 em::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 2px;
    height: 7px;
    background: color-mix(in srgb, var(--bl-copper) 24%, transparent);
    z-index: -1;
}
.bl-sub {
    margin: 0;
    max-width: 54ch;
    font-size: 15px;
    line-height: 1.88;
    color: var(--bl-ink-2);
}
.bl-sub b { color: var(--bl-ink); font-weight: 600; white-space: nowrap; }

.bl-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}
.bl-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    border: 1px solid var(--bl-line);
    border-radius: 4px;
    background: var(--bl-card);
    font-family: var(--bl-mono);
    font-size: 11.5px;
    color: var(--bl-ink-2);
}
.bl-meta span i {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--bl-copper);
    font-style: normal;
}

.bl-theme {
    display: inline-flex;
    gap: 2px;
    margin-top: 14px;
    padding: 3px;
    border: 1px solid var(--bl-line);
    border-radius: 6px;
    background: var(--bl-card-2);
}
.bl-theme button {
    appearance: none;
    border: 0;
    background: transparent;
    color: var(--bl-muted);
    font: inherit;
    font-size: 12px;
    padding: 5px 11px;
    border-radius: 4px;
    cursor: pointer;
}
.bl-theme button:hover { color: var(--bl-ink); }
.bl-theme button[aria-pressed="true"] {
    background: var(--bl-cyan);
    color: #fff;
    font-weight: 600;
}

/* 首屏铭牌 */
.bl-plate {
    padding: 16px 18px;
    border: 1px solid var(--bl-line-2);
    border-radius: 6px;
    background:
        linear-gradient(var(--bl-card), var(--bl-card)) padding-box,
        repeating-linear-gradient(135deg, var(--bl-copper) 0 8px, transparent 8px 16px) border-box;
    box-shadow: var(--bl-shadow);
}
.bl-plate h2 {
    margin: 0 0 10px;
    font-family: var(--bl-mono);
    font-size: 10.5px;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--bl-muted);
}
.bl-plate-row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    padding: 6px 0;
    border-bottom: 1px dashed var(--bl-line);
    font-size: 12.5px;
    color: var(--bl-ink-2);
}
.bl-plate-row:last-of-type { border-bottom: 0; }
.bl-plate-row b {
    font-family: var(--bl-mono);
    font-size: 13.5px;
    color: var(--bl-ink);
    font-variant-numeric: tabular-nums;
}
.bl-plate p {
    margin: 10px 0 0;
    font-size: 11px;
    line-height: 1.7;
    color: var(--bl-muted);
}

/* ---------------- 工作台 ---------------- */
.bl-work {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.04fr);
    gap: 16px;
    align-items: start;
}
.bl-card {
    border: 1px solid var(--bl-line);
    border-radius: 8px;
    background: var(--bl-card);
    box-shadow: var(--bl-shadow);
}
.bl-card-head {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 11px 16px;
    border-bottom: 1px solid var(--bl-line);
    background: var(--bl-card-2);
    border-radius: 8px 8px 0 0;
}
.bl-card-head::before {
    content: "";
    width: 3px;
    height: 13px;
    background: var(--bl-copper);
    border-radius: 1px;
}
.bl-card-head h2 {
    margin: 0;
    font-family: var(--bl-mono);
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--bl-ink);
}
.bl-card-head .bl-side {
    margin-left: auto;
    font-family: var(--bl-mono);
    font-size: 11px;
    color: var(--bl-muted);
}

/* 表单 */
.bl-form { padding: 14px 16px 16px; }
.bl-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 11px 13px;
}
.bl-field { display: grid; gap: 5px; min-width: 0; }
.bl-field.is-wide { grid-column: 1 / -1; }
.bl-field > label {
    font-family: var(--bl-mono);
    font-size: 10.5px;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--bl-muted);
}
.bl-input,
.bl-select {
    width: 100%;
    box-sizing: border-box;
    border: 1px solid var(--bl-line-2);
    border-radius: 5px;
    background: var(--bl-card);
    color: var(--bl-ink);
    font-family: var(--bl-mono);
    font-size: 14px;
    padding: 8px 10px;
    outline: none;
    font-variant-numeric: tabular-nums;
    transition: border-color .15s, box-shadow .15s;
}
.bl-input:focus,
.bl-select:focus {
    border-color: var(--bl-cyan);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--bl-cyan) 12%, transparent);
}
.bl-input.is-bad { border-color: var(--bl-bad); background: var(--bl-bad-soft); }
.bl-select { font-family: var(--bl-sans); font-size: 13px; cursor: pointer; }

/* 预设按钮 */
.bl-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-top: 7px;
}
.bl-presets button {
    appearance: none;
    border: 1px solid var(--bl-line-2);
    background: var(--bl-card);
    color: var(--bl-ink-2);
    font-family: var(--bl-mono);
    font-size: 11px;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    transition: border-color .15s, background .15s, color .15s;
}
.bl-presets button:hover { border-color: var(--bl-cyan); color: var(--bl-cyan); }
.bl-presets button[aria-pressed="true"] {
    background: var(--bl-cyan);
    border-color: var(--bl-cyan);
    color: #fff;
    font-weight: 600;
}

.bl-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-top: 15px;
    padding-top: 13px;
    border-top: 1px solid var(--bl-line);
}
.bl-btn {
    appearance: none;
    font: inherit;
    font-size: 13px;
    padding: 8px 15px;
    border-radius: 5px;
    border: 1px solid var(--bl-line-2);
    background: var(--bl-card);
    color: var(--bl-ink-2);
    cursor: pointer;
    white-space: nowrap;
    transition: border-color .15s, color .15s, background .15s;
}
.bl-btn:hover { border-color: var(--bl-ink); color: var(--bl-ink); }
.bl-btn.is-primary {
    background: var(--bl-cyan);
    border-color: var(--bl-cyan);
    color: #fff;
    font-weight: 700;
}
.bl-btn.is-primary:hover { background: color-mix(in srgb, var(--bl-cyan) 86%, #000); }
.bl-btn.is-ghost { background: transparent; }
.bl-actions .bl-spacer { flex: 1 1 auto; }

.bl-demos {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
    margin-top: 11px;
}
.bl-demos > span { font-size: 11.5px; color: var(--bl-muted); }
.bl-demos button {
    appearance: none;
    border: 1px dashed var(--bl-line-2);
    background: transparent;
    color: var(--bl-ink-2);
    font: inherit;
    font-size: 11.8px;
    padding: 4px 9px;
    border-radius: 4px;
    cursor: pointer;
}
.bl-demos button:hover { border-color: var(--bl-copper); color: var(--bl-copper); }

.bl-note {
    margin: 11px 0 0;
    padding: 9px 12px;
    border-left: 3px solid var(--bl-copper);
    border-radius: 4px;
    background: var(--bl-copper-soft);
    font-size: 12px;
    line-height: 1.75;
    color: var(--bl-ink-2);
}
.bl-note.is-bad { border-left-color: var(--bl-bad); background: var(--bl-bad-soft); }
.bl-note b { color: var(--bl-ink); }

/* ---------------- 结果 ---------------- */
.bl-result { position: sticky; top: 14px; }
.bl-life {
    padding: 18px 16px 14px;
    border-bottom: 1px solid var(--bl-line);
    text-align: center;
}
.bl-life-num {
    font-family: var(--bl-mono);
    font-size: clamp(34px, 4.4vw, 46px);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -.03em;
    color: var(--bl-ink);
    font-variant-numeric: tabular-nums;
}
.bl-life-num small { font-size: 15px; font-weight: 500; color: var(--bl-muted); margin-left: 4px; }
.bl-life-cap {
    margin-top: 6px;
    font-family: var(--bl-mono);
    font-size: 10.5px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--bl-muted);
}
.bl-life-sub {
    margin: 7px 0 0;
    font-size: 12.5px;
    color: var(--bl-ink-2);
}
.bl-life-sub b { color: var(--bl-cyan); font-weight: 600; }

/* 寿命标尺 */
.bl-ruler { margin-top: 14px; }
.bl-ruler-bar {
    position: relative;
    height: 12px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--bl-bad) 0%, var(--bl-copper) 30%, var(--bl-cyan) 68%, var(--bl-ok) 100%);
    opacity: .85;
}
.bl-ruler-pin {
    position: absolute;
    top: -5px;
    left: 0;
    width: 2px;
    height: 22px;
    background: var(--bl-ink);
    border-radius: 1px;
    transform: translateX(-1px);
    transition: left .4s cubic-bezier(.22, .8, .3, 1);
}
.bl-ruler-pin::after {
    content: "";
    position: absolute;
    left: -3px;
    top: -4px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--bl-ink);
    box-shadow: 0 0 0 2px var(--bl-card);
}
.bl-ruler-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 7px;
    font-family: var(--bl-mono);
    font-size: 10px;
    color: var(--bl-muted);
}

/* 关键数据 */
.bl-facts {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    background: var(--bl-line);
    border-bottom: 1px solid var(--bl-line);
}
.bl-fact { padding: 11px 14px; background: var(--bl-card); }
.bl-fact span {
    display: block;
    font-family: var(--bl-mono);
    font-size: 10px;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--bl-muted);
    margin-bottom: 3px;
}
.bl-fact b {
    font-family: var(--bl-mono);
    font-size: 16px;
    color: var(--bl-ink);
    font-variant-numeric: tabular-nums;
}
.bl-fact b small { font-size: 11px; font-weight: 500; color: var(--bl-muted); margin-left: 2px; }

/* 修正系数 */
.bl-corr { padding: 13px 16px 4px; }
.bl-corr h3,
.bl-scale h3 {
    margin: 0 0 8px;
    font-family: var(--bl-mono);
    font-size: 10.5px;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--bl-muted);
}
.bl-corr-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    border-bottom: 1px dashed var(--bl-line);
    font-size: 12.4px;
    color: var(--bl-ink-2);
}
.bl-corr-row:last-child { border-bottom: 0; }
.bl-corr-row i {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--bl-copper);
    font-style: normal;
    flex: 0 0 auto;
}
.bl-corr-row b {
    margin-left: auto;
    font-family: var(--bl-mono);
    color: var(--bl-ink);
    font-variant-numeric: tabular-nums;
}
.bl-corr-total {
    margin: 10px 0 12px;
    padding: 8px 10px;
    border-radius: 4px;
    background: var(--bl-cyan-soft);
    font-size: 12px;
    color: var(--bl-ink-2);
}
.bl-corr-total b {
    font-family: var(--bl-mono);
    color: var(--bl-cyan);
    font-size: 14px;
}

/* 检修建议 */
.bl-advice { padding: 0 16px 16px; }
.bl-advice-box {
    padding: 10px 12px;
    border: 1px dashed var(--bl-line-2);
    border-radius: 5px;
    background: var(--bl-card-2);
    font-size: 12.2px;
    line-height: 1.8;
    color: var(--bl-ink-2);
}
.bl-advice-box b { color: var(--bl-ink); }
.bl-advice-box strong {
    font-family: var(--bl-mono);
    color: var(--bl-copper);
    font-size: 13px;
}

/* ---------------- 批量表 ---------------- */
.bl-batch { margin-top: 16px; padding: 14px 16px 16px; }
.bl-batch-head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}
.bl-batch-head h2 {
    margin: 0;
    font-family: var(--bl-mono);
    font-size: 11.5px;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--bl-ink);
}
.bl-batch-head span { font-size: 12px; color: var(--bl-muted); }
.bl-batch-head .bl-btn { margin-left: auto; padding: 6px 12px; font-size: 12px; }
.bl-batch-wrap { overflow-x: auto; }
.bl-batch table { width: 100%; min-width: 620px; border-collapse: collapse; font-size: 12.4px; }
.bl-batch th,
.bl-batch td {
    padding: 7px 9px;
    text-align: left;
    border-bottom: 1px dashed var(--bl-line);
    font-variant-numeric: tabular-nums;
}
.bl-batch th {
    font-family: var(--bl-mono);
    font-size: 10.5px;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--bl-muted);
    font-weight: 600;
    white-space: nowrap;
}
.bl-batch td { color: var(--bl-ink-2); font-family: var(--bl-mono); }
.bl-batch tbody tr:hover td { background: var(--bl-card-2); }
.bl-batch .bl-cur td { color: var(--bl-cyan); font-weight: 700; background: var(--bl-cyan-soft); }

/* ---------------- 说明 ---------------- */
.bl-doc { margin-top: 30px; }
.bl-doc-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.bl-doc-block {
    padding: 16px 18px;
    border: 1px solid var(--bl-line);
    border-radius: 8px;
    background: var(--bl-card);
}
.bl-doc-block h2 {
    margin: 0 0 9px;
    font-size: 15.5px;
    font-weight: 700;
    color: var(--bl-ink);
}
.bl-doc-block p,
.bl-doc-block li { font-size: 13.2px; line-height: 1.95; color: var(--bl-ink-2); }
.bl-doc-block p { margin: 0 0 8px; }
.bl-doc-block p:last-child { margin-bottom: 0; }
.bl-doc-block ol,
.bl-doc-block ul { margin: 0; padding-left: 19px; }
.bl-doc-block li + li { margin-top: 4px; }
.bl-doc-block b { color: var(--bl-ink); }
.bl-doc-block code {
    font-family: var(--bl-mono);
    font-size: 12px;
    padding: 1px 5px;
    border-radius: 3px;
    background: var(--bl-card-2);
    color: var(--bl-cyan);
}
.bl-formula {
    margin: 9px 0 0;
    padding: 11px 13px;
    border: 1px dashed var(--bl-line-2);
    border-radius: 5px;
    background: var(--bl-card-2);
    font-family: var(--bl-mono);
    font-size: 11.8px;
    line-height: 1.95;
    color: var(--bl-ink-2);
    overflow-x: auto;
}

.bl-toast {
    position: fixed;
    left: 50%;
    bottom: 24px;
    transform: translate(-50%, 10px);
    z-index: 90;
    max-width: min(88vw, 440px);
    padding: 10px 18px;
    border-radius: 5px;
    background: var(--bl-ink);
    color: var(--bl-card);
    font-size: 13px;
    line-height: 1.6;
    box-shadow: 0 16px 32px -20px rgba(0, 0, 0, .7);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s, transform .2s;
}
.bl-toast.is-show { opacity: 1; transform: translate(-50%, 0); }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1020px) {
    .bl-hero-in { grid-template-columns: minmax(0, 1fr); gap: 20px; }
    .bl-plate { max-width: 420px; }
    .bl-work { grid-template-columns: minmax(0, 1fr); }
    .bl-result { position: static; }
    .bl-doc-grid { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 620px) {
    .bl-hero { padding-top: 20px; }
    .bl-h1 { font-size: 25px; }
    .bl-sub { font-size: 14px; line-height: 1.85; max-width: none; }
    .bl-plate { display: none; }
    .bl-meta { margin-top: 12px; }
    .bl-grid { grid-template-columns: minmax(0, 1fr); }
    .bl-field.is-wide { grid-column: auto; }
    .bl-btn { flex: 1 1 auto; text-align: center; }
    .bl-actions .bl-spacer { display: none; }
    .bl-facts { grid-template-columns: minmax(0, 1fr); }
    .bl-form { padding: 12px; }
    .bl-life { padding: 14px 12px 12px; }
    .bl-life-num { font-size: 32px; }
    .bl-batch-head span { display: none; }
}