/* ============================================================
   personal-training-cost-calc · 私教课与教练课包成本计算器
   力量房工业风（ptcc-）：水泥灰底 + 安全橙 + 钢蓝，硬边直角、配重片元素
   与 bbf 奶白软萌 / wuc 蓝图 / pbc 账本 / rsf 紫罗兰流光 零重叠
   ============================================================ */

.ptcc-page {
    --ptcc-orange: #e8590c;
    --ptcc-orange-deep: #c2410c;
    --ptcc-orange-soft: rgba(232, 89, 12, 0.10);
    --ptcc-steel: #31567a;
    --ptcc-steel-deep: #24425f;
    --ptcc-steel-soft: rgba(49, 86, 122, 0.10);
    --ptcc-lime: #4f9d69;
    --ptcc-warn: #d97706;
    --ptcc-danger: #d64545;
    --ptcc-cream: #edf0f3;
    --ptcc-card: #ffffff;
    --ptcc-card-2: #f5f7f9;
    --ptcc-line: #dce3ea;
    --ptcc-line-strong: #c3ccd6;
    --ptcc-text: #17222c;
    --ptcc-muted: #66737f;
    --ptcc-shadow: 0 6px 22px rgba(30, 45, 60, 0.10);
    --ptcc-grad: linear-gradient(135deg, #f2701f 0%, #c2410c 100%);
    --ptcc-grad-steel: linear-gradient(135deg, #3d6a95 0%, #24425f 100%);

    color: var(--ptcc-text);
    font-size: 15px;
    line-height: 1.8;
}

[data-theme="dark"] .ptcc-page {
    --ptcc-orange: #ff7a2f;
    --ptcc-orange-deep: #ffa06b;
    --ptcc-orange-soft: rgba(255, 122, 47, 0.14);
    --ptcc-steel: #7ba3cc;
    --ptcc-steel-deep: #9dbde0;
    --ptcc-steel-soft: rgba(123, 163, 204, 0.14);
    --ptcc-lime: #6fc28a;
    --ptcc-warn: #f0b45c;
    --ptcc-danger: #f07575;
    --ptcc-cream: #10161d;
    --ptcc-card: #182029;
    --ptcc-card-2: #1e2833;
    --ptcc-line: #2b3745;
    --ptcc-line-strong: #3c4c5f;
    --ptcc-text: #e7edf3;
    --ptcc-muted: #8fa0b1;
    --ptcc-shadow: 0 6px 22px rgba(0, 0, 0, 0.4);
    --ptcc-grad: linear-gradient(135deg, #f2701f 0%, #a5350a 100%);
    --ptcc-grad-steel: linear-gradient(135deg, #35597c 0%, #1d3550 100%);
}

.ptcc-page h1, .ptcc-page h2, .ptcc-page h3 { line-height: 1.35; }
.ptcc-page b, .ptcc-page strong { color: var(--ptcc-orange-deep); }

/* ---------- 首屏 ---------- */
.ptcc-hero {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) auto minmax(230px, 0.8fr);
    gap: 26px 30px;
    align-items: center;
    padding: 32px 32px 28px;
    margin-bottom: 26px;
    border: 1px solid var(--ptcc-line);
    border-radius: 16px;
    background:
        repeating-linear-gradient(135deg, transparent 0 14px, var(--ptcc-steel-soft) 14px 15px),
        radial-gradient(90% 130% at 100% 0%, var(--ptcc-orange-soft), transparent 55%),
        var(--ptcc-card);
    box-shadow: var(--ptcc-shadow);
    overflow: hidden;
}
.ptcc-kicker {
    display: inline-block;
    padding: 5px 14px;
    margin-bottom: 14px;
    border: 1px solid var(--ptcc-orange);
    border-radius: 4px;
    background: var(--ptcc-orange-soft);
    color: var(--ptcc-orange-deep);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.16em;
}
.ptcc-hero h1 {
    margin: 0 0 12px;
    font-size: clamp(25px, 3.3vw, 36px);
    font-weight: 900;
    letter-spacing: 0.005em;
}
.ptcc-hero-sub {
    margin: 0 0 16px;
    max-width: 60ch;
    color: var(--ptcc-muted);
    font-size: 15.5px;
}
.ptcc-hero-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}
.ptcc-hero-chips li {
    padding: 5px 13px;
    border-radius: 4px;
    border: 1px solid var(--ptcc-line);
    background: var(--ptcc-card-2);
    color: var(--ptcc-muted);
    font-size: 12.5px;
    font-weight: 700;
}

/* hero 杠铃装饰 */
.ptcc-hero-barbell {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 10px 6px;
    min-width: 190px;
}
.ptcc-bar {
    width: 74px;
    height: 10px;
    border-radius: 5px;
    background: linear-gradient(180deg, #9aa7b4, #5c6b79);
    box-shadow: 0 2px 5px rgba(20, 30, 40, 0.35);
}
[data-theme="dark"] .ptcc-bar { background: linear-gradient(180deg, #6d7d8d, #3a4754); }
.ptcc-plate {
    border-radius: 6px;
    background: var(--ptcc-grad);
    box-shadow: 0 3px 8px rgba(194, 65, 12, 0.35), inset 0 -3px 0 rgba(0, 0, 0, 0.18);
}
.ptcc-plate.pl { width: 26px; height: 84px; }
.ptcc-plate.pm { width: 20px; height: 64px; background: var(--ptcc-grad-steel); box-shadow: 0 3px 8px rgba(36, 66, 95, 0.35), inset 0 -3px 0 rgba(0, 0, 0, 0.18); }
.ptcc-plate.ps { width: 14px; height: 46px; }
.ptcc-hero-barbell .ptcc-plate:nth-child(4),
.ptcc-hero-barbell .ptcc-plate:nth-child(5) { transform: scaleX(-1); }
.ptcc-hero-barbell.ptcc-clank { animation: ptcc-clank 0.55s ease; }
@keyframes ptcc-clank {
    0% { transform: translateY(0); }
    30% { transform: translateY(-7px); }
    55% { transform: translateY(3px); }
    75% { transform: translateY(-2px); }
    100% { transform: translateY(0); }
}

/* hero 读数卡 */
.ptcc-hero-readout {
    display: grid;
    gap: 7px;
    padding: 20px 22px;
    border: 1px solid var(--ptcc-line-strong);
    border-radius: 14px;
    border-top: 4px solid var(--ptcc-orange);
    background: var(--ptcc-card-2);
}
.ptcc-readout-label {
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.14em;
    color: var(--ptcc-muted);
    text-transform: uppercase;
}
.ptcc-readout-num {
    font-size: 34px;
    font-weight: 900;
    line-height: 1.1;
    color: var(--ptcc-orange-deep);
    font-variant-numeric: tabular-nums;
}
.ptcc-readout-avg { font-size: 13.5px; font-weight: 700; color: var(--ptcc-steel-deep); }
.ptcc-readout-meta { font-size: 12.5px; color: var(--ptcc-muted); }
.ptcc-readout-tip { font-size: 11.5px; color: var(--ptcc-muted); opacity: 0.8; }

/* ---------- 测算区 ---------- */
.ptcc-calc {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 380px);
    gap: 24px;
    align-items: start;
    margin-bottom: 30px;
}
.ptcc-input-col { display: grid; gap: 20px; }

.ptcc-panel {
    padding: 22px 24px 20px;
    border: 1px solid var(--ptcc-line);
    border-radius: 14px;
    background: var(--ptcc-card);
    box-shadow: var(--ptcc-shadow);
    position: relative;
}
.ptcc-panel::before {
    content: "";
    position: absolute;
    left: 0;
    top: 22px;
    width: 4px;
    height: 30px;
    border-radius: 0 4px 4px 0;
    background: var(--ptcc-orange);
}
.ptcc-panel-head {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    margin-bottom: 16px;
}
.ptcc-step {
    flex: none;
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    background: var(--ptcc-grad-steel);
    color: #fff;
    font-size: 16px;
    font-weight: 900;
    letter-spacing: 0.02em;
}
.ptcc-panel-head h2 { margin: 0 0 3px; font-size: 18px; font-weight: 900; }
.ptcc-panel-head p { margin: 0; font-size: 13px; color: var(--ptcc-muted); line-height: 1.6; }

.ptcc-grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-bottom: 14px; }
.ptcc-grid4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }

.ptcc-field { display: grid; gap: 6px; }
.ptcc-field--ghost { pointer-events: none; }
.ptcc-label { font-size: 12.5px; font-weight: 800; color: var(--ptcc-muted); letter-spacing: 0.04em; }
.ptcc-input-wrap, .ptcc-select-wrap { position: relative; display: block; }
.ptcc-input {
    width: 100%;
    padding: 10px 12px;
    border: 1.5px solid var(--ptcc-line-strong);
    border-radius: 8px;
    background: var(--ptcc-card-2);
    color: var(--ptcc-text);
    font-size: 15px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.ptcc-input:focus {
    outline: none;
    border-color: var(--ptcc-orange);
    box-shadow: 0 0 0 3px var(--ptcc-orange-soft);
}
.ptcc-input:disabled { opacity: 0.45; cursor: not-allowed; }
.ptcc-input-wrap .ptcc-input { padding-right: 74px; }
.ptcc-unit {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 11.5px;
    font-style: normal;
    font-weight: 700;
    color: var(--ptcc-muted);
    pointer-events: none;
    white-space: nowrap;
}
select.ptcc-input { appearance: none; padding-right: 34px; }
.ptcc-select-wrap::after {
    content: "";
    position: absolute;
    right: 14px;
    top: 50%;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--ptcc-muted);
    border-bottom: 2px solid var(--ptcc-muted);
    transform: translateY(-70%) rotate(45deg);
    pointer-events: none;
}

.ptcc-level-ref {
    margin: 14px 0 4px;
    padding: 9px 14px;
    border-radius: 8px;
    border: 1px dashed var(--ptcc-line-strong);
    background: var(--ptcc-steel-soft);
    color: var(--ptcc-steel-deep);
    font-size: 13px;
    font-weight: 700;
}
.ptcc-hint { margin: 8px 0 0; font-size: 12.5px; color: var(--ptcc-muted); line-height: 1.7; }

/* 批量对比行 */
.ptcc-specgrid { display: grid; gap: 10px; margin-bottom: 14px; }
.ptcc-specrow {
    display: grid;
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 12px;
    align-items: center;
    padding: 10px 14px;
    border: 1px solid var(--ptcc-line);
    border-radius: 10px;
    background: var(--ptcc-card-2);
}
.ptcc-specrow b { font-size: 13px; color: var(--ptcc-steel-deep); }
.ptcc-specrow .ptcc-input-wrap .ptcc-input { padding-right: 52px; }
.ptcc-spec-note { grid-column: 1 / -1; margin: 0; font-size: 12px; color: var(--ptcc-muted); }

/* 报错 + 按钮 */
.ptcc-error {
    margin: 4px 0 12px;
    padding: 11px 14px;
    border: 1px solid var(--ptcc-danger);
    border-left-width: 4px;
    border-radius: 8px;
    background: rgba(214, 69, 69, 0.08);
    color: var(--ptcc-danger);
    font-size: 13px;
    font-weight: 700;
    line-height: 1.6;
}
.ptcc-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.ptcc-btn {
    padding: 10px 22px;
    border: 1.5px solid var(--ptcc-line-strong);
    border-radius: 8px;
    background: var(--ptcc-card-2);
    color: var(--ptcc-text);
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
    transition: transform 0.12s ease, border-color 0.12s ease, box-shadow 0.12s ease;
}
.ptcc-btn:hover { transform: translateY(-1px); border-color: var(--ptcc-steel); }
.ptcc-btn--primary {
    border: none;
    background: var(--ptcc-grad);
    color: #fff;
    box-shadow: 0 4px 12px rgba(194, 65, 12, 0.3);
}
.ptcc-btn--primary:hover { box-shadow: 0 6px 16px rgba(194, 65, 12, 0.4); }

/* ---------- 结果列 ---------- */
.ptcc-result-col {
    position: sticky;
    top: 86px;
    display: grid;
    gap: 14px;
}
.ptcc-result-hero {
    display: grid;
    gap: 6px;
    padding: 20px 22px;
    border-radius: 14px;
    background: var(--ptcc-grad-steel);
    color: #fff;
    box-shadow: 0 8px 22px rgba(36, 66, 95, 0.35);
}
.ptcc-rh-label { font-size: 12px; font-weight: 800; letter-spacing: 0.14em; opacity: 0.82; }
.ptcc-rh-num { font-size: 36px; font-weight: 900; line-height: 1.1; font-variant-numeric: tabular-nums; }
.ptcc-rh-sub { font-size: 13px; opacity: 0.9; }

.ptcc-kpis { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.ptcc-kpi {
    position: relative;
    display: grid;
    gap: 2px;
    padding: 14px 16px 12px;
    border: 1px solid var(--ptcc-line);
    border-radius: 12px;
    background: var(--ptcc-card);
    box-shadow: var(--ptcc-shadow);
    overflow: hidden;
}
.ptcc-kpi::after {
    content: "";
    position: absolute;
    right: -14px;
    top: -14px;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--ptcc-orange-soft);
    border: 5px solid var(--ptcc-orange-soft);
}
.ptcc-kpi span { font-size: 12px; font-weight: 800; color: var(--ptcc-muted); letter-spacing: 0.04em; }
.ptcc-kpi b { font-size: 20px; font-weight: 900; color: var(--ptcc-text); font-variant-numeric: tabular-nums; }
.ptcc-kpi small { font-size: 11.5px; color: var(--ptcc-muted); }

.ptcc-verdict {
    padding: 15px 18px;
    border-radius: 12px;
    border: 1px solid var(--ptcc-line);
    background: var(--ptcc-card);
    font-size: 13.5px;
    line-height: 1.75;
}
.ptcc-verdict.is-good { border-left: 5px solid var(--ptcc-lime); background: rgba(79, 157, 105, 0.07); }
.ptcc-verdict.is-warn { border-left: 5px solid var(--ptcc-warn); background: rgba(217, 119, 6, 0.08); }
.ptcc-verdict.is-bad { border-left: 5px solid var(--ptcc-danger); background: rgba(214, 69, 69, 0.07); }
.ptcc-verdict b { font-size: 14.5px; }

.ptcc-mini-card {
    padding: 16px 18px;
    border: 1px solid var(--ptcc-line);
    border-radius: 12px;
    background: var(--ptcc-card);
    box-shadow: var(--ptcc-shadow);
}
.ptcc-mini-card h3 { margin: 0 0 10px; font-size: 14.5px; font-weight: 900; }

.ptcc-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.ptcc-table th, .ptcc-table td { padding: 7px 8px; text-align: left; border-bottom: 1px solid var(--ptcc-line); font-variant-numeric: tabular-nums; }
.ptcc-table th { font-size: 12px; font-weight: 800; color: var(--ptcc-muted); background: var(--ptcc-card-2); }
.ptcc-table tr:last-child td { border-bottom: none; }
.ptcc-table .is-price { text-align: right; }
.ptcc-table tr.is-best td { background: var(--ptcc-orange-soft); font-weight: 800; }
.ptcc-table tr.is-warnrow td { color: var(--ptcc-danger); font-weight: 700; }

.ptcc-result-actions { display: grid; gap: 10px; }
.ptcc-result-actions .ptcc-btn { width: 100%; }
.ptcc-result-foot { margin: 0; font-size: 12px; color: var(--ptcc-muted); line-height: 1.7; }

/* ---------- 通用节标题 ---------- */
.ptcc-section-head { margin-bottom: 18px; }
.ptcc-section-kicker, .ptcc-sheet-kicker {
    display: inline-block;
    margin-bottom: 8px;
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.18em;
    color: var(--ptcc-orange-deep);
}
.ptcc-section-head h2 { margin: 0 0 6px; font-size: 24px; font-weight: 900; }
.ptcc-section-head p { margin: 0; color: var(--ptcc-muted); font-size: 14px; }

/* ---------- A4 对比单 ---------- */
.ptcc-sheet-wrap {
    padding: 26px 28px;
    margin-bottom: 30px;
    border: 1px solid var(--ptcc-line);
    border-radius: 16px;
    background: var(--ptcc-card-2);
}
.ptcc-sheet-head {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: flex-start;
    margin-bottom: 18px;
}
.ptcc-sheet-head h2 { margin: 0 0 6px; font-size: 21px; font-weight: 900; }
.ptcc-sheet-head p { margin: 0; max-width: 70ch; font-size: 13.5px; color: var(--ptcc-muted); }
.ptcc-sheet-badge {
    flex: none;
    padding: 6px 14px;
    border-radius: 4px;
    background: var(--ptcc-grad-steel);
    color: #fff;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.ptcc-sheet {
    padding: 26px 28px;
    border: 1px solid var(--ptcc-line-strong);
    border-radius: 10px;
    background: var(--ptcc-card);
    box-shadow: var(--ptcc-shadow);
}
.ptcc-sheet-top {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    padding-bottom: 14px;
    border-bottom: 3px solid var(--ptcc-text);
}
.ptcc-sheet-top h3 { margin: 0 0 4px; font-size: 19px; font-weight: 900; }
.ptcc-sheet-top p { margin: 0; font-size: 12px; color: var(--ptcc-muted); }
.ptcc-sheet-meta { display: grid; gap: 3px; text-align: right; font-size: 12.5px; color: var(--ptcc-muted); }
.ptcc-sheet-meta b { color: var(--ptcc-text); font-size: 13px; }

.ptcc-sheet-info {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 22px;
    padding: 12px 0;
    border-bottom: 1px dashed var(--ptcc-line-strong);
    font-size: 13px;
    color: var(--ptcc-muted);
}
.ptcc-sheet-info b { color: var(--ptcc-text); }

.ptcc-sheet-big { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; padding: 16px 0; }
.ptcc-sheet-big-item {
    display: grid;
    gap: 4px;
    padding: 12px 14px;
    border: 1px solid var(--ptcc-line);
    border-radius: 8px;
    background: var(--ptcc-card-2);
}
.ptcc-sheet-big-item span { font-size: 11.5px; font-weight: 800; color: var(--ptcc-muted); letter-spacing: 0.05em; }
.ptcc-sheet-big-item b { font-size: 19px; font-weight: 900; color: var(--ptcc-orange-deep); font-variant-numeric: tabular-nums; }

.ptcc-sheet-table { width: 100%; border-collapse: collapse; font-size: 12.5px; margin-bottom: 14px; }
.ptcc-sheet-table th, .ptcc-sheet-table td { padding: 7px 9px; border: 1px solid var(--ptcc-line-strong); text-align: left; font-variant-numeric: tabular-nums; }
.ptcc-sheet-table th { background: var(--ptcc-card-2); font-size: 11.5px; color: var(--ptcc-muted); }
.ptcc-sheet-table .w-no { width: 34px; }
.ptcc-sheet-table .w-sub { width: 84px; }

.ptcc-sheet-notes { display: grid; gap: 4px; margin-bottom: 12px; }
.ptcc-sheet-notes p { margin: 0; font-size: 12px; color: var(--ptcc-muted); line-height: 1.7; }
.ptcc-sheet-foot { padding-top: 10px; border-top: 1px solid var(--ptcc-line); font-size: 11.5px; color: var(--ptcc-muted); }

/* ---------- 参考 / 规则 / FAQ ---------- */
.ptcc-reference, .ptcc-rules { margin-bottom: 30px; }
.ptcc-ref-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.ptcc-ref-card {
    padding: 18px 20px;
    border: 1px solid var(--ptcc-line);
    border-radius: 14px;
    background: var(--ptcc-card);
    box-shadow: var(--ptcc-shadow);
}
.ptcc-ref-card h3 { margin: 0 0 2px; font-size: 16px; font-weight: 900; }
.ptcc-ref-sub { margin: 0 0 12px; font-size: 12.5px; color: var(--ptcc-muted); }
.ptcc-table-scroll { overflow-x: auto; }
.ptcc-table--ref td, .ptcc-table--ref th { white-space: nowrap; }
.ptcc-ref-tip { margin: 10px 0 0; font-size: 12.5px; color: var(--ptcc-steel-deep); background: var(--ptcc-steel-soft); padding: 9px 12px; border-radius: 8px; }
.ptcc-ref-note {
    margin: 16px 0 0;
    padding: 13px 18px;
    border-left: 4px solid var(--ptcc-orange);
    border-radius: 0 10px 10px 0;
    background: var(--ptcc-orange-soft);
    font-size: 13.5px;
    color: var(--ptcc-text);
}

.ptcc-rule-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-bottom: 18px; }
.ptcc-rule {
    padding: 18px;
    border: 1px solid var(--ptcc-line);
    border-radius: 12px;
    background: var(--ptcc-card);
    box-shadow: var(--ptcc-shadow);
}
.ptcc-rule-no {
    display: inline-grid;
    place-items: center;
    width: 30px;
    height: 30px;
    margin-bottom: 10px;
    border-radius: 6px;
    background: var(--ptcc-orange-soft);
    color: var(--ptcc-orange-deep);
    font-size: 15px;
    font-weight: 900;
}
.ptcc-rule h3 { margin: 0 0 6px; font-size: 15px; font-weight: 900; }
.ptcc-rule p { margin: 0; font-size: 13px; color: var(--ptcc-muted); line-height: 1.7; }

.ptcc-example {
    padding: 20px 24px;
    border: 1px dashed var(--ptcc-line-strong);
    border-radius: 12px;
    background: var(--ptcc-card-2);
}
.ptcc-example h3 { margin: 0 0 8px; font-size: 16px; font-weight: 900; }
.ptcc-example p { margin: 0; font-size: 14px; line-height: 1.9; }
.ptcc-example-note { margin-top: 8px !important; color: var(--ptcc-muted); font-size: 13px !important; }

.ptcc-faq { margin-bottom: 30px; }

/* ---------- 返回顶部 ---------- */
.ptcc-top {
    position: fixed;
    right: 26px;
    bottom: 30px;
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    border: 1px solid var(--ptcc-line-strong);
    border-radius: 10px;
    background: var(--ptcc-card);
    color: var(--ptcc-steel-deep);
    font-size: 18px;
    font-weight: 900;
    cursor: pointer;
    box-shadow: var(--ptcc-shadow);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.15s ease;
    z-index: 60;
}
.ptcc-top.is-show { opacity: 1; pointer-events: auto; }
.ptcc-top:hover { transform: translateY(-2px); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
    .ptcc-calc { grid-template-columns: minmax(0, 1fr); }
    .ptcc-result-col { position: static; }
    .ptcc-hero { grid-template-columns: minmax(0, 1fr); }
    .ptcc-hero-barbell { display: none; }
    .ptcc-grid4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .ptcc-rule-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
    .ptcc-hero, .ptcc-panel, .ptcc-sheet-wrap { padding: 18px 16px; }
    .ptcc-grid2 { grid-template-columns: minmax(0, 1fr); }
    .ptcc-grid4 { grid-template-columns: minmax(0, 1fr); }
    .ptcc-kpis { grid-template-columns: minmax(0, 1fr); }
    .ptcc-ref-grid { grid-template-columns: minmax(0, 1fr); }
    .ptcc-rule-grid { grid-template-columns: minmax(0, 1fr); }
    .ptcc-sheet-big { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .ptcc-sheet-head { flex-direction: column; }
}

/* ---------- 打印：仅 A4 对比单 ---------- */
@media print {
    body * { visibility: hidden !important; }
    .ptcc-sheet, .ptcc-sheet * { visibility: visible !important; }
    .ptcc-sheet {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        border: none;
        box-shadow: none;
        background: #fff;
        color: #111;
    }
    .ptcc-sheet-big-item, .ptcc-sheet-table th { background: #f3f4f6 !important; }
    .ptcc-top, .ptcc-sheet-badge { display: none !important; }
}