/* ==========================================================================
   道路救援拖车费用计算器 /tool/towing-fee-calc
   独立设计「救援派单台」风：沥青灰 + 安全橙 + 黄黑警示斜纹
   深浅主题由导航栏主题按钮（data-theme）驱动
   ========================================================================== */

.twc-page {
    --twc-orange: #f26419;
    --twc-orange-2: #ff8c42;
    --twc-orange-soft: rgba(242, 100, 25, 0.10);
    --twc-asphalt: #26292e;
    --twc-panel: #ffffff;
    --twc-bg: #f4f5f7;
    --twc-line: #dde1e6;
    --twc-line-soft: #e9edf1;
    --twc-ink: #23262b;
    --twc-sub: #5f6771;
    --twc-muted: #939ca6;
    --twc-ok: #2e7d4f;
    --twc-warn: #c07a00;
    --twc-bad: #cc3b2e;
    --twc-hazard: repeating-linear-gradient(-45deg, #f7c948 0 14px, #26292e 14px 28px);
    --twc-r: 14px;
    --twc-r-sm: 10px;
    --twc-shadow: 0 8px 26px rgba(35, 38, 43, 0.09);
    --twc-num: "Bahnschrift", "DIN Alternate", "Segoe UI Variable Text", ui-sans-serif, system-ui, sans-serif;
}

[data-theme="dark"] .twc-page {
    --twc-orange: #ff8c42;
    --twc-orange-2: #ffab6e;
    --twc-orange-soft: rgba(255, 140, 66, 0.12);
    --twc-asphalt: #16181c;
    --twc-panel: #1c1f24;
    --twc-bg: #14161a;
    --twc-line: #343941;
    --twc-line-soft: #262b31;
    --twc-ink: #eceff3;
    --twc-sub: #b3bcc6;
    --twc-muted: #8590a0;
    --twc-ok: #63c98d;
    --twc-warn: #f0b354;
    --twc-bad: #ff8d84;
    --twc-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.twc-page *,
.twc-page *::before,
.twc-page *::after { box-sizing: border-box; }
.twc-page [hidden] { display: none !important; }

/* ============================ 首屏 ============================ */
.twc-hero {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 330px;
    gap: 30px;
    align-items: center;
    padding: 34px 36px;
    margin-bottom: 22px;
    border-radius: 20px;
    overflow: hidden;
    background:
        radial-gradient(120% 150% at 90% -10%, rgba(242, 100, 25, 0.32) 0%, rgba(242, 100, 25, 0) 55%),
        linear-gradient(135deg, #1c1f24 0%, #2a2e35 55%, #3a3428 100%);
    box-shadow: 0 16px 40px rgba(28, 31, 36, 0.32);
}
.twc-hero-stripes {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 12px;
    background: var(--twc-hazard);
    opacity: 0.9;
}
.twc-hero-copy { position: relative; z-index: 1; }
.twc-kicker {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 12px;
    letter-spacing: 3px;
    font-weight: 700;
    color: #1c1f24;
    background: #f7c948;
    margin-bottom: 12px;
}
.twc-hero-copy h1 {
    margin: 0 0 10px;
    font-size: clamp(24px, 3.4vw, 34px);
    color: #f6f7f9;
    letter-spacing: 1px;
}
.twc-hero-sub {
    margin: 0 0 14px;
    max-width: 570px;
    font-size: 14.5px;
    line-height: 1.8;
    color: #c2c8d0;
}
.twc-hero-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}
.twc-hero-chips li {
    font-size: 12px;
    color: #ffe2cc;
    padding: 4px 10px;
    border-radius: 6px;
    background: rgba(242, 100, 25, 0.16);
    border: 1px solid rgba(255, 140, 66, 0.4);
}
.twc-hero-readout {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 22px;
    border-radius: 12px;
    background: var(--twc-panel);
    color: var(--twc-ink);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.4);
    border-top: 5px solid var(--twc-orange);
}
.twc-readout-label { font-size: 12px; letter-spacing: 2px; color: var(--twc-sub); }
.twc-readout-num { font-family: var(--twc-num); font-size: 27px; line-height: 1.25; color: var(--twc-orange); }
.twc-readout-avg { font-size: 13.5px; font-weight: 600; color: var(--twc-ink); }
.twc-readout-meta { font-size: 12.5px; color: var(--twc-sub); }
.twc-readout-tip { font-size: 11.5px; color: var(--twc-warn); border-top: 1px dashed var(--twc-line); padding-top: 8px; margin-top: 4px; font-weight: 600; }

/* ============================ 布局 ============================ */
.twc-calc {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(340px, 430px);
    gap: 22px;
    align-items: start;
}
.twc-input-col { display: flex; flex-direction: column; gap: 18px; }

.twc-panel {
    background: var(--twc-panel);
    border: 1px solid var(--twc-line);
    border-radius: var(--twc-r);
    padding: 22px 24px;
    box-shadow: var(--twc-shadow);
    position: relative;
    overflow: hidden;
}
.twc-panel::after {
    content: "";
    position: absolute;
    right: 0; top: 0;
    width: 64px; height: 8px;
    background: var(--twc-hazard);
    opacity: 0.75;
}
.twc-panel-head { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 16px; }
.twc-step {
    flex: none;
    width: 38px; height: 38px;
    display: grid; place-items: center;
    border-radius: 8px;
    font-family: var(--twc-num);
    font-size: 16px; font-weight: 700;
    color: #fff;
    background: var(--twc-orange);
}
[data-theme="dark"] .twc-step { color: #1c1207; }
.twc-panel-head h2 { margin: 0 0 4px; font-size: 17px; color: var(--twc-ink); }
.twc-panel-head p { margin: 0; font-size: 12.5px; color: var(--twc-sub); line-height: 1.7; }

/* 类型切换 */
.twc-seg {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 16px;
}
.twc-seg-btn {
    padding: 11px 6px;
    border-radius: var(--twc-r-sm);
    border: 1.5px solid var(--twc-line);
    background: var(--twc-bg);
    color: var(--twc-sub);
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}
.twc-seg-btn:hover { border-color: var(--twc-orange-2); color: var(--twc-ink); }
.twc-seg-btn.is-on {
    background: var(--twc-orange);
    border-color: var(--twc-orange);
    color: #fff;
    box-shadow: 0 6px 16px rgba(242, 100, 25, 0.3);
}
[data-theme="dark"] .twc-seg-btn.is-on { color: #1c1207; }

.twc-grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.twc-field { display: flex; flex-direction: column; gap: 6px; }
.twc-label { font-size: 12.5px; color: var(--twc-sub); font-weight: 600; }
.twc-input-wrap, .twc-select-wrap { position: relative; display: block; }
.twc-input {
    width: 100%;
    padding: 10px 12px;
    border-radius: var(--twc-r-sm);
    border: 1.5px solid var(--twc-line);
    background: var(--twc-bg);
    color: var(--twc-ink);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.twc-input:focus {
    outline: none;
    border-color: var(--twc-orange);
    box-shadow: 0 0 0 3px var(--twc-orange-soft);
}
.twc-input[type="number"] { font-family: var(--twc-num); }
.twc-unit {
    position: absolute;
    right: 12px; top: 50%;
    transform: translateY(-50%);
    font-style: normal;
    font-size: 12px;
    color: var(--twc-muted);
    pointer-events: none;
}
.twc-select-wrap::after {
    content: "▾";
    position: absolute;
    right: 12px; top: 50%;
    transform: translateY(-50%);
    color: var(--twc-muted);
    pointer-events: none;
    font-size: 12px;
}
.twc-select-wrap select { appearance: none; -webkit-appearance: none; padding-right: 30px; }
.twc-hint { margin: 0; font-size: 12px; color: var(--twc-muted); line-height: 1.7; }
.twc-hint-box { display: flex; flex-direction: column; gap: 6px; justify-content: flex-start; }

.twc-checks { display: flex; flex-direction: column; gap: 10px; margin-top: 14px; }
.twc-check {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--twc-ink);
    cursor: pointer;
    padding: 9px 12px;
    border: 1px solid var(--twc-line-soft);
    border-radius: var(--twc-r-sm);
    background: var(--twc-bg);
    transition: border-color 0.15s ease;
}
.twc-check:hover { border-color: var(--twc-orange-2); }
.twc-check input { accent-color: var(--twc-orange); width: 16px; height: 16px; flex: none; }

.twc-error {
    padding: 12px 16px;
    border-radius: var(--twc-r-sm);
    background: rgba(204, 59, 46, 0.08);
    border: 1px solid rgba(204, 59, 46, 0.4);
    color: var(--twc-bad);
    font-size: 13px;
    line-height: 1.7;
}
.twc-actions { display: flex; gap: 12px; }
.twc-btn {
    padding: 11px 22px;
    border-radius: var(--twc-r-sm);
    border: 1.5px solid var(--twc-line);
    background: var(--twc-panel);
    color: var(--twc-ink);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease;
}
.twc-btn:hover:not(:disabled) { border-color: var(--twc-orange); transform: translateY(-1px); }
.twc-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.twc-btn--primary {
    background: linear-gradient(135deg, var(--twc-orange), var(--twc-orange-2));
    border-color: transparent;
    color: #fff;
    box-shadow: 0 6px 18px rgba(242, 100, 25, 0.3);
}
[data-theme="dark"] .twc-btn--primary { color: #1c1207; }

/* ============================ 结果区 ============================ */
.twc-result-col { position: sticky; top: 76px; }
.twc-result-card {
    background: var(--twc-panel);
    border: 1px solid var(--twc-line);
    border-radius: var(--twc-r);
    box-shadow: var(--twc-shadow);
    overflow: hidden;
}
.twc-result-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
    background: var(--twc-asphalt);
    color: #e6e9ee;
}
.twc-result-tag { font-size: 13px; font-weight: 700; letter-spacing: 2px; color: var(--twc-orange-2); }
.twc-result-note { font-size: 12px; color: #aeb6c0; }

.twc-result-main { padding: 20px; text-align: center; border-bottom: 1px dashed var(--twc-line); }
.twc-result-label { display: block; font-size: 12.5px; color: var(--twc-sub); margin-bottom: 6px; }
.twc-result-total { display: block; font-family: var(--twc-num); font-size: 30px; color: var(--twc-orange); line-height: 1.3; }
.twc-result-mid { display: block; font-size: 12.5px; color: var(--twc-muted); margin-top: 4px; }

.twc-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--twc-line-soft); }
.twc-metric { background: var(--twc-panel); padding: 12px 16px; display: flex; flex-direction: column; gap: 4px; }
.twc-metric-k { font-size: 11.5px; color: var(--twc-muted); }
.twc-metric-v { font-size: 14.5px; font-weight: 700; color: var(--twc-ink); font-family: var(--twc-num); }
.twc-metric-v small { font-size: 11px; color: var(--twc-muted); font-weight: 400; font-family: inherit; }

.twc-breakdown { padding: 16px 20px; border-top: 1px solid var(--twc-line-soft); }
.twc-breakdown h3 { margin: 0 0 10px; font-size: 14px; color: var(--twc-ink); }
.twc-table-scroll { overflow-x: auto; }
.twc-table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.twc-table th {
    text-align: left;
    padding: 8px 10px;
    background: var(--twc-bg);
    color: var(--twc-sub);
    font-weight: 600;
    border-bottom: 1.5px solid var(--twc-line);
    white-space: nowrap;
}
.twc-table td { padding: 9px 10px; border-bottom: 1px solid var(--twc-line-soft); color: var(--twc-ink); vertical-align: top; }
.twc-table .is-price { font-family: var(--twc-num); white-space: nowrap; }
.twc-table tfoot td { font-weight: 700; background: var(--twc-orange-soft); }
.twc-table-empty { text-align: center; color: var(--twc-muted); padding: 18px 0 !important; }

.twc-notes { padding: 8px 20px; display: flex; flex-direction: column; gap: 8px; }
.twc-note {
    font-size: 12.5px;
    line-height: 1.7;
    color: var(--twc-sub);
    background: var(--twc-bg);
    border-left: 3px solid var(--twc-orange);
    border-radius: 0 8px 8px 0;
    padding: 9px 12px;
}
.twc-note b { color: var(--twc-ink); }
.twc-note.is-warn { border-left-color: var(--twc-bad); }
.twc-note.is-free { border-left-color: var(--twc-ok); }

.twc-result-actions { display: flex; gap: 10px; padding: 14px 20px; flex-wrap: wrap; }
.twc-result-actions .twc-btn { flex: 1; min-width: 140px; text-align: center; }
.twc-result-foot { margin: 0; padding: 0 20px 16px; font-size: 11.5px; color: var(--twc-muted); line-height: 1.7; }

/* ============================ 章节通用 ============================ */
.twc-reference, .twc-rules, .twc-faq, .twc-sheet-wrap {
    margin-top: 26px;
    background: var(--twc-panel);
    border: 1px solid var(--twc-line);
    border-radius: var(--twc-r);
    padding: 26px 28px;
    box-shadow: var(--twc-shadow);
}
.twc-section-head { margin-bottom: 18px; }
.twc-section-kicker { font-size: 11px; letter-spacing: 3px; color: var(--twc-orange); font-weight: 700; }
.twc-section-head h2 { margin: 6px 0 8px; font-size: 20px; color: var(--twc-ink); }
.twc-section-head p { margin: 0; font-size: 13px; color: var(--twc-sub); line-height: 1.8; }
.twc-ref-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.twc-ref-card { border: 1px solid var(--twc-line-soft); border-radius: var(--twc-r-sm); padding: 16px 18px; background: var(--twc-bg); }
.twc-ref-card h3 { margin: 0 0 4px; font-size: 15px; color: var(--twc-ink); }
.twc-ref-sub { margin: 0 0 12px; font-size: 12px; color: var(--twc-muted); }
.twc-ref-note { margin: 14px 0 0; font-size: 12.5px; color: var(--twc-sub); line-height: 1.8; background: var(--twc-orange-soft); border-radius: 8px; padding: 10px 14px; }

.twc-rule-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.twc-rule { border: 1px solid var(--twc-line-soft); border-radius: var(--twc-r-sm); padding: 16px; background: var(--twc-bg); }
.twc-rule-no { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: var(--twc-asphalt); color: #f7c948; font-weight: 700; margin-bottom: 10px; }
.twc-rule h3 { margin: 0 0 6px; font-size: 14.5px; color: var(--twc-ink); }
.twc-rule p { margin: 0; font-size: 12.5px; color: var(--twc-sub); line-height: 1.8; }
.twc-example { margin-top: 16px; border: 1px dashed var(--twc-orange); border-radius: var(--twc-r-sm); padding: 16px 18px; background: var(--twc-orange-soft); }
.twc-example h3 { margin: 0 0 8px; font-size: 14.5px; color: var(--twc-ink); }
.twc-example p { margin: 0 0 6px; font-size: 13px; color: var(--twc-sub); line-height: 1.9; }
.twc-example b { color: var(--twc-orange); }
.twc-example-note { color: var(--twc-muted) !important; font-size: 12px !important; }

.twc-faq .faq-list { display: flex; flex-direction: column; gap: 10px; }
.twc-faq .faq-item { border: 1px solid var(--twc-line-soft); border-radius: var(--twc-r-sm); background: var(--twc-bg); overflow: hidden; }
.twc-faq .faq-item summary { cursor: pointer; padding: 13px 16px; font-size: 14px; font-weight: 600; color: var(--twc-ink); list-style: none; position: relative; padding-right: 36px; }
.twc-faq .faq-item summary::-webkit-details-marker { display: none; }
.twc-faq .faq-item summary::after { content: "+"; position: absolute; right: 16px; top: 50%; transform: translateY(-50%); color: var(--twc-orange); font-size: 18px; font-weight: 700; }
.twc-faq .faq-item[open] summary::after { content: "−"; }
.twc-faq .faq-a { padding: 0 16px 14px; font-size: 13px; line-height: 1.9; color: var(--twc-sub); }
.twc-faq .faq-a b { color: var(--twc-ink); }

/* ============================ A4 确认单 ============================ */
.twc-sheet-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 16px; }
.twc-sheet-kicker { font-size: 11px; letter-spacing: 3px; color: var(--twc-orange); font-weight: 700; }
.twc-sheet-head h2 { margin: 6px 0 6px; font-size: 20px; color: var(--twc-ink); }
.twc-sheet-head p { margin: 0; font-size: 12.5px; color: var(--twc-sub); line-height: 1.7; }
.twc-sheet-badge { flex: none; font-size: 11.5px; color: var(--twc-warn); border: 1px dashed var(--twc-warn); border-radius: 999px; padding: 4px 12px; }

.twc-sheet {
    background: #fff;
    color: #23262b;
    border: 1px solid #dde1e6;
    border-radius: 6px;
    padding: 30px 34px;
    font-size: 12.5px;
    line-height: 1.7;
}
.twc-sheet-top { display: flex; justify-content: space-between; align-items: flex-start; border-bottom: 3px solid #f26419; padding-bottom: 12px; margin-bottom: 12px; }
.twc-sheet-top h3 { margin: 0 0 4px; font-size: 19px; color: #b34a10; }
.twc-sheet-top p { margin: 0; font-size: 12px; color: #5f6771; }
.twc-sheet-meta { text-align: right; font-size: 12px; color: #5f6771; display: flex; flex-direction: column; gap: 3px; }
.twc-sheet-meta b { color: #23262b; font-family: var(--twc-num); }
.twc-sheet-info { display: flex; flex-wrap: wrap; gap: 8px 22px; padding: 10px 0 14px; font-size: 12.5px; color: #5f6771; border-bottom: 1px dashed #cfd6dd; }
.twc-sheet-info b { color: #23262b; }
.twc-sheet-table { width: 100%; border-collapse: collapse; margin: 12px 0; }
.twc-sheet-table th, .twc-sheet-table td { border: 1px solid #cfd6dd; padding: 8px 10px; text-align: left; font-size: 12px; }
.twc-sheet-table th { background: #f4f0ea; color: #23262b; font-weight: 700; }
.twc-sheet-table td { color: #23262b; }
.twc-sheet-table .w-no { width: 44px; text-align: center; }
.twc-sheet-table .w-sub { width: 130px; text-align: right; }
.twc-sheet-table td.w-sub { font-family: var(--twc-num); }
.twc-sheet-table tfoot td { font-weight: 700; background: #fdf1e7; }
.twc-sheet-summary { border: 1px solid #cfd6dd; border-radius: 4px; margin: 12px 0; overflow: hidden; }
.twc-sheet-row { display: flex; justify-content: space-between; padding: 9px 14px; border-bottom: 1px solid #e6ebf0; font-size: 12.5px; color: #5f6771; }
.twc-sheet-row:last-child { border-bottom: none; }
.twc-sheet-row b { color: #23262b; font-family: var(--twc-num); }
.twc-sheet-row--total { background: #f26419; }
.twc-sheet-row--total span { color: #fff; font-weight: 700; }
.twc-sheet-row--total b { color: #fff; font-size: 15px; }
.twc-sheet-notes { margin: 12px 0; }
.twc-sheet-notes p { margin: 0 0 6px; font-size: 11.5px; color: #5f6771; line-height: 1.8; }
.twc-sheet-notes b { color: #23262b; }
.twc-sheet-sign { display: flex; justify-content: space-between; gap: 20px; margin-top: 18px; font-size: 12.5px; color: #23262b; }
.twc-sheet-foot { margin-top: 14px; padding-top: 10px; border-top: 1px dashed #cfd6dd; font-size: 11px; color: #939ca6; text-align: center; }

/* ============================ 返回顶部 ============================ */
.twc-top {
    position: fixed;
    right: 22px; bottom: 26px;
    width: 42px; height: 42px;
    border-radius: 10px;
    border: none;
    background: var(--twc-orange);
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: opacity 0.25s ease, transform 0.25s ease;
    box-shadow: 0 8px 20px rgba(242, 100, 25, 0.35);
    z-index: 60;
}
.twc-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* ============================ 响应式 ============================ */
@media (max-width: 1100px) {
    .twc-hero { grid-template-columns: 1fr; }
    .twc-hero-readout { max-width: 420px; }
    .twc-calc { grid-template-columns: 1fr; }
    .twc-result-col { position: static; }
    .twc-rule-grid { grid-template-columns: 1fr 1fr; }
    .twc-ref-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .twc-hero { padding: 26px 20px 34px; }
    .twc-seg { grid-template-columns: 1fr 1fr; }
    .twc-grid2 { grid-template-columns: 1fr; }
    .twc-metrics { grid-template-columns: 1fr; }
    .twc-rule-grid { grid-template-columns: 1fr; }
    .twc-panel, .twc-reference, .twc-rules, .twc-faq, .twc-sheet-wrap { padding: 18px 16px; }
    .twc-sheet { padding: 18px 14px; }
    .twc-sheet-sign { flex-direction: column; gap: 12px; }
}

/* ============================ 打印：只留 A4 单 ============================ */
@media print {
    .detail-wrap > .container > *:not(.twc-page),
    .twc-page > *:not(.twc-sheet-wrap),
    .twc-sheet-head,
    .twc-top { display: none !important; }
    body { background: #fff !important; }
    .detail-wrap, .container, .twc-page, .twc-sheet-wrap {
        display: block !important;
        margin: 0 !important; padding: 0 !important;
        border: none !important; box-shadow: none !important;
        background: #fff !important;
        max-width: none !important;
    }
    .twc-sheet { border: none; border-radius: 0; padding: 0; color: #000; }
    .twc-sheet-row--total { background: #f26419 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
    .twc-sheet-table tfoot td { background: #fdf1e7 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
    @page { size: A4; margin: 14mm; }
}