/* ============================================================
   影子长度与身高估算实验（shadow-length-calc）
   主题：石板蓝灰 #35566e + 柠檬黄 #f2b705 + 雾白底
   标志性 UI：相似三角形比例尺作图 + 太阳高度角 + 日影曲线
   深浅双主题：跟随导航栏 #themeToggle（data-theme 挂在 <html>）
   ============================================================ */

/* 变量作用域：主体 + 浮层（弹窗 / 打印单 / 提示条）必须同作用域声明，
   否则浮层取不到变量，背景与圆角会全部失效 */
.slc-page,
.slc-modal,
.slc-sheet,
.slc-toast {
    --slc-primary: #35566e;
    --slc-primary-2: #4a7594;
    --slc-primary-deep: #1f3949;
    --slc-accent: #f2b705;
    --slc-accent-2: #ffc93c;
    --slc-accent-deep: #a67c00;
    --slc-primary-soft: #e6eef4;
    --slc-accent-soft: #fdf3d6;
    --slc-bg: #f2f5f8;
    --slc-surface: #ffffff;
    --slc-surface-2: #f5f8fb;
    --slc-border: rgba(53, 86, 110, .16);
    --slc-border-strong: rgba(53, 86, 110, .34);
    --slc-text: #16232c;
    --slc-text-soft: #3c4d5a;
    --slc-text-muted: #75899a;
    --slc-ok: #1f7a52;
    --slc-ok-soft: #e2f2ea;
    --slc-warn: #9a6a00;
    --slc-warn-soft: #fbf0d8;
    --slc-bad: #a9382b;
    --slc-bad-soft: #f9e5e2;
    --slc-shadow: 0 14px 34px -22px rgba(31, 57, 73, .38);
    --slc-shadow-lg: 0 28px 62px -30px rgba(31, 57, 73, .5);
    --slc-btn-fg: #1f3949;
    --slc-radius: 18px;
    --slc-radius-sm: 11px;
    --slc-mono: "Cascadia Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
}

:root[data-theme="dark"] .slc-page,
:root[data-theme="dark"] .slc-modal,
:root[data-theme="dark"] .slc-sheet,
:root[data-theme="dark"] .slc-toast {
    --slc-primary: #8fc3e0;
    --slc-primary-2: #a9d4ec;
    --slc-primary-deep: #14293a;
    --slc-accent: #ffc93c;
    --slc-accent-2: #ffd968;
    --slc-accent-deep: #a67c00;
    --slc-primary-soft: rgba(143, 195, 224, .14);
    --slc-accent-soft: rgba(255, 201, 60, .15);
    --slc-bg: #0d141a;
    --slc-surface: #131d26;
    --slc-surface-2: #1a2733;
    --slc-border: rgba(143, 195, 224, .2);
    --slc-border-strong: rgba(143, 195, 224, .4);
    --slc-text: #e8f1f7;
    --slc-text-soft: #b6c9d6;
    --slc-text-muted: #849aab;
    --slc-ok: #6fd3a3;
    --slc-ok-soft: rgba(111, 211, 163, .14);
    --slc-warn: #f0bd5e;
    --slc-warn-soft: rgba(240, 189, 94, .15);
    --slc-bad: #f08a7c;
    --slc-bad-soft: rgba(240, 138, 124, .14);
    --slc-shadow: 0 14px 34px -22px rgba(0, 0, 0, .85);
    --slc-shadow-lg: 0 28px 62px -30px rgba(0, 0, 0, .95);
    --slc-btn-fg: #a9d4ec;
}

.slc-page {
    color: var(--slc-text);
    font-size: 15px;
    line-height: 1.8;
}

.slc-page *,
.slc-page *::before,
.slc-page *::after { box-sizing: border-box; }
.slc-page [hidden] { display: none !important; }
.slc-page b { font-weight: 700; color: var(--slc-primary); }
:root[data-theme="dark"] .slc-page b { color: var(--slc-primary-2); }
.slc-page code {
    font-family: var(--slc-mono);
    font-size: .92em;
    padding: 1px 6px;
    border-radius: 5px;
    background: var(--slc-primary-soft);
    color: var(--slc-primary-deep);
}
:root[data-theme="dark"] .slc-page code { color: var(--slc-primary-2); }

/* ---------------- 首屏 ---------------- */
.slc-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.24fr) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
    margin-bottom: 22px;
}

.slc-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--slc-primary);
    background: var(--slc-primary-soft);
    border: 1px solid var(--slc-border);
}

.slc-hero-copy h1 {
    margin: 15px 0 12px;
    font-size: 36px;
    line-height: 1.22;
    font-weight: 900;
    letter-spacing: -.02em;
    color: var(--slc-text);
}
.slc-hero-copy h1::after {
    content: "";
    display: block;
    width: 74px;
    height: 4px;
    margin-top: 12px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--slc-primary), var(--slc-accent));
}

.slc-lead {
    margin: 16px 0 18px;
    font-size: 15.5px;
    line-height: 1.95;
    color: var(--slc-text-soft);
    max-width: 58ch;
}

.slc-tags {
    list-style: none;
    margin: 0 0 20px;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.slc-tags li {
    font-size: 12.5px;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: 6px;
    color: var(--slc-text-soft);
    background: var(--slc-surface);
    border: 1px solid var(--slc-border);
}

.slc-steps {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}
.slc-steps li {
    padding: 12px 14px;
    border-radius: var(--slc-radius-sm);
    background: var(--slc-surface);
    border: 1px solid var(--slc-border);
    box-shadow: var(--slc-shadow);
    border-left: 3px solid var(--slc-accent);
}
.slc-steps b {
    display: block;
    font-size: 11px;
    letter-spacing: .12em;
    color: var(--slc-accent-deep);
    margin-bottom: 3px;
}
:root[data-theme="dark"] .slc-steps b { color: var(--slc-accent); }
.slc-steps span {
    display: block;
    font-size: 14.5px;
    font-weight: 700;
    color: var(--slc-text);
}
.slc-steps i {
    display: block;
    font-style: normal;
    font-size: 12.5px;
    color: var(--slc-text-muted);
    line-height: 1.6;
    margin-top: 2px;
}

/* ---------------- 首屏右侧：示意图卡 ---------------- */
.slc-figure {
    padding: 16px 18px 14px;
    border-radius: var(--slc-radius);
    background: linear-gradient(165deg, var(--slc-surface), var(--slc-surface-2));
    border: 1px solid var(--slc-border-strong);
    box-shadow: var(--slc-shadow-lg);
    position: relative;
    overflow: hidden;
}
.slc-figure::before {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 4px;
    background: linear-gradient(90deg, var(--slc-primary), var(--slc-accent));
}
.slc-fig-cap {
    font-size: 11.5px;
    font-weight: 800;
    letter-spacing: .14em;
    color: var(--slc-accent-deep);
    margin-bottom: 6px;
}
:root[data-theme="dark"] .slc-fig-cap { color: var(--slc-accent); }
.slc-figure svg { width: 100%; height: auto; display: block; }
.slc-fig-note {
    margin-top: 8px;
    font-size: 12.5px;
    line-height: 1.7;
    color: var(--slc-text-muted);
}

/* ---------------- 模式切换 ---------------- */
.slc-modes {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}
.slc-mode {
    flex: 1 1 210px;
    text-align: left;
    padding: 12px 15px;
    border-radius: var(--slc-radius-sm);
    background: var(--slc-surface);
    border: 1px solid var(--slc-border);
    cursor: pointer;
    font-family: inherit;
    transition: border-color .15s, background .15s, transform .12s;
}
.slc-mode:hover { transform: translateY(-1px); }
.slc-mode.on {
    background: var(--slc-primary-soft);
    border-color: var(--slc-primary-2);
    box-shadow: var(--slc-shadow);
}
.slc-mode b {
    display: block;
    font-size: 14px;
    color: var(--slc-text);
    margin-bottom: 2px;
}
.slc-mode span {
    display: block;
    font-size: 12px;
    line-height: 1.6;
    color: var(--slc-text-muted);
}
.slc-mode em {
    font-style: normal;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .08em;
    color: var(--slc-accent-deep);
    display: block;
    margin-bottom: 3px;
}
:root[data-theme="dark"] .slc-mode em { color: var(--slc-accent); }

/* ---------------- 实验台（输入区） ---------------- */
.slc-desk {
    padding: 18px 20px;
    border-radius: var(--slc-radius);
    background: var(--slc-surface);
    border: 1px solid var(--slc-border);
    box-shadow: var(--slc-shadow);
    margin-bottom: 18px;
}
.slc-mode-box { margin-bottom: 4px; }
.slc-mode-box[hidden] { display: none !important; }
.slc-desk-top {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: flex-end;
}
.slc-field { display: flex; flex-direction: column; gap: 6px; min-width: 140px; }
.slc-field--grow { flex: 1 1 180px; }
.slc-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--slc-text);
}
.slc-input {
    width: 100%;
    padding: 9px 12px;
    font-size: 15px;
    font-family: inherit;
    color: var(--slc-text);
    background: var(--slc-surface-2);
    border: 1px solid var(--slc-border-strong);
    border-radius: var(--slc-radius-sm);
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}
.slc-input:focus {
    border-color: var(--slc-primary-2);
    box-shadow: 0 0 0 3px var(--slc-primary-soft);
}
.slc-input--num {
    font-family: var(--slc-mono);
    font-size: 18px;
    font-weight: 700;
    text-align: center;
}
.slc-textarea {
    font-family: var(--slc-mono);
    font-size: 14px;
    line-height: 1.9;
    resize: vertical;
}
.slc-hint { font-size: 12px; color: var(--slc-text-muted); line-height: 1.6; }
.slc-desk-btns {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-left: auto;
}

.slc-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 16px;
    font-size: 14px;
    font-weight: 700;
    font-family: inherit;
    color: var(--slc-btn-fg);
    background: var(--slc-primary-soft);
    border: 1px solid var(--slc-border);
    border-radius: 999px;
    cursor: pointer;
    transition: transform .12s, box-shadow .15s, background .15s;
}
.slc-btn:hover { transform: translateY(-1px); box-shadow: var(--slc-shadow); }
.slc-btn--primary {
    color: #fff;
    background: linear-gradient(135deg, var(--slc-primary), var(--slc-primary-2));
    border-color: transparent;
}
:root[data-theme="dark"] .slc-btn--primary { color: #10222f; }
.slc-btn--accent {
    color: #241a00;
    background: linear-gradient(135deg, var(--slc-accent), var(--slc-accent-2));
    border-color: transparent;
}
.slc-btn--ghost { color: var(--slc-text-soft); background: transparent; }
.slc-btn--sm { padding: 6px 12px; font-size: 13px; }
.slc-btn-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

.slc-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-top: 13px;
    padding-top: 12px;
    border-top: 1px dashed var(--slc-border);
}
.slc-preset-label { font-size: 12px; font-weight: 700; color: var(--slc-text-muted); }
.slc-chip {
    padding: 5px 12px;
    font-size: 12.5px;
    font-weight: 600;
    font-family: inherit;
    color: var(--slc-text-soft);
    background: var(--slc-surface-2);
    border: 1px solid var(--slc-border);
    border-radius: 999px;
    cursor: pointer;
    transition: background .15s, color .15s;
}
.slc-chip:hover { color: var(--slc-primary); background: var(--slc-primary-soft); }

/* ---------------- 提示条 ---------------- */
.slc-errbar {
    margin: 0 0 18px;
    padding: 11px 16px;
    border-radius: var(--slc-radius-sm);
    font-size: 14px;
    font-weight: 600;
    color: var(--slc-bad);
    background: var(--slc-bad-soft);
    border: 1px solid var(--slc-bad);
}
.slc-errbar.ok { color: var(--slc-ok); background: var(--slc-ok-soft); border-color: var(--slc-ok); }

/* ---------------- 结果卡 ---------------- */
.slc-result {
    display: grid;
    grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr);
    gap: 18px;
    margin-bottom: 18px;
}
.slc-res-main {
    padding: 20px 22px;
    border-radius: var(--slc-radius);
    background: linear-gradient(145deg, var(--slc-primary), var(--slc-primary-deep));
    color: #f2f8fc;
    box-shadow: var(--slc-shadow-lg);
}
:root[data-theme="dark"] .slc-res-main {
    background: linear-gradient(145deg, #14293a, #0d1a25);
    border: 1px solid var(--slc-border-strong);
}
.slc-res-label {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .06em;
    color: rgba(242, 248, 252, .72);
}
.slc-res-value {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin: 6px 0 4px;
}
.slc-res-value b {
    font-family: var(--slc-mono);
    font-size: 46px;
    line-height: 1.05;
    font-weight: 800;
    color: #fff;
}
.slc-res-value span {
    font-size: 16px;
    font-weight: 700;
    color: var(--slc-accent-2);
}
.slc-res-sub {
    font-size: 13px;
    line-height: 1.75;
    color: rgba(242, 248, 252, .85);
}
.slc-res-main b { color: #fff; }
.slc-res-kpis {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin-top: 14px;
}
.slc-kpi {
    padding: 9px 8px;
    border-radius: 10px;
    text-align: center;
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .18);
}
.slc-kpi span { display: block; font-size: 11px; color: rgba(242, 248, 252, .74); }
.slc-kpi b { display: block; font-family: var(--slc-mono); font-size: 15px; color: #fff; }

/* 公式卡 */
.slc-formula {
    padding: 20px 22px;
    border-radius: var(--slc-radius);
    background: var(--slc-surface);
    border: 1px solid var(--slc-border);
    border-top: 3px solid var(--slc-accent);
    box-shadow: var(--slc-shadow);
}
.slc-formula h3 {
    margin: 0 0 10px;
    font-size: 16px;
    font-weight: 800;
    color: var(--slc-text);
}
.slc-eq {
    padding: 12px 14px;
    border-radius: var(--slc-radius-sm);
    background: var(--slc-primary-soft);
    border: 1px solid var(--slc-border);
    font-family: var(--slc-mono);
    font-size: 15px;
    line-height: 1.9;
    color: var(--slc-primary-deep);
    overflow-x: auto;
    white-space: nowrap;
}
:root[data-theme="dark"] .slc-eq { color: var(--slc-primary-2); }
.slc-eq b { color: var(--slc-accent-deep); }
:root[data-theme="dark"] .slc-eq b { color: var(--slc-accent); }
.slc-sub-list {
    list-style: none;
    margin: 12px 0 0;
    padding: 0;
}
.slc-sub-list li {
    font-size: 13px;
    line-height: 1.8;
    color: var(--slc-text-soft);
    padding-left: 14px;
    position: relative;
}
.slc-sub-list li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--slc-accent);
    font-weight: 800;
}

/* ---------------- 校验清单 ---------------- */
.slc-checks {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 10px;
}
.slc-check {
    display: flex;
    gap: 10px;
    padding: 11px 13px;
    border-radius: var(--slc-radius-sm);
    background: var(--slc-surface-2);
    border: 1px solid var(--slc-border);
    border-left: 3px solid var(--slc-ok);
}
.slc-check--warn { border-left-color: var(--slc-warn); }
.slc-check--bad { border-left-color: var(--slc-bad); }
.slc-check-ic {
    flex: 0 0 auto;
    width: 22px;
    height: 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 12px;
    font-weight: 800;
    color: #fff;
    background: var(--slc-ok);
}
.slc-check--warn .slc-check-ic { background: var(--slc-warn); }
.slc-check--bad .slc-check-ic { background: var(--slc-bad); }
.slc-check b { display: block; font-size: 13.5px; color: var(--slc-text); }
.slc-check span { display: block; font-size: 12.5px; line-height: 1.7; color: var(--slc-text-muted); }

/* ---------------- 作图区 ---------------- */
.slc-canvas {
    padding: 16px 18px;
    border-radius: var(--slc-radius-sm);
    background:
        linear-gradient(rgba(53, 86, 110, .07) 1px, transparent 1px) 0 0 / 100% 26px,
        linear-gradient(90deg, rgba(53, 86, 110, .07) 1px, transparent 1px) 0 0 / 26px 26px,
        var(--slc-surface-2);
    border: 1px solid var(--slc-border-strong);
    overflow-x: auto;
}
.slc-canvas svg { display: block; max-width: 100%; height: auto; }
.slc-canvas-note {
    margin-top: 10px;
    font-size: 12.5px;
    line-height: 1.7;
    color: var(--slc-text-muted);
}

/* ---------------- 通用卡片 ---------------- */
.slc-card {
    padding: 20px 22px;
    border-radius: var(--slc-radius);
    background: var(--slc-surface);
    border: 1px solid var(--slc-border);
    box-shadow: var(--slc-shadow);
    margin-bottom: 18px;
}
.slc-card-head { margin-bottom: 12px; }
.slc-card-title {
    margin: 0 0 6px;
    font-size: 19px;
    font-weight: 800;
    color: var(--slc-text);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}
.slc-card-desc {
    margin: 0;
    font-size: 13.5px;
    line-height: 1.85;
    color: var(--slc-text-soft);
}
.slc-note-sub {
    margin-left: auto;
    font-size: 12.5px;
    font-weight: 500;
    letter-spacing: 0;
    color: var(--slc-text-muted);
}

/* ---------------- 表格 ---------------- */
.slc-table-wrap {
    overflow-x: auto;
    border-radius: var(--slc-radius-sm);
    border: 1px solid var(--slc-border);
    background: var(--slc-surface-2);
}
.slc-table {
    width: 100%;
    min-width: 660px;
    border-collapse: collapse;
    font-size: 13.5px;
}
.slc-table th,
.slc-table td {
    padding: 9px 12px;
    text-align: left;
    border-bottom: 1px solid var(--slc-border);
    vertical-align: middle;
}
.slc-table thead th {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--slc-text);
    background: var(--slc-primary-soft);
    white-space: nowrap;
}
.slc-table tbody tr:last-child td { border-bottom: none; }
.slc-table td.num { font-family: var(--slc-mono); font-weight: 700; color: var(--slc-primary); }
.slc-table td.dim { color: var(--slc-text-muted); }
.slc-table .slc-empty { padding: 18px 12px; text-align: center; color: var(--slc-text-muted); }
.slc-pill {
    display: inline-block;
    padding: 2px 9px;
    border-radius: 999px;
    font-size: 11.5px;
    font-weight: 700;
    white-space: nowrap;
}
.slc-pill--ok { color: var(--slc-ok); background: var(--slc-ok-soft); }
.slc-pill--warn { color: var(--slc-warn); background: var(--slc-warn-soft); }
.slc-pill--bad { color: var(--slc-bad); background: var(--slc-bad-soft); }

/* ---------------- 导出与分享 ---------------- */
.slc-pre {
    margin: 14px 0 0;
    padding: 14px 16px;
    border-radius: var(--slc-radius-sm);
    font-family: var(--slc-mono);
    font-size: 12.5px;
    line-height: 1.85;
    color: var(--slc-text-soft);
    background: var(--slc-surface-2);
    border: 1px solid var(--slc-border);
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 320px;
    overflow: auto;
}

/* ---------------- 底部标签页 ---------------- */
.slc-tabs {
    display: flex;
    gap: 6px;
    border-bottom: 1px solid var(--slc-border);
    margin: 26px 0 22px;
    overflow-x: auto;
}
.slc-tabbtn {
    appearance: none;
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    padding: 13px 18px;
    font-size: 15px;
    font-weight: 700;
    color: var(--slc-text-soft);
    position: relative;
    border-bottom: 0;
    margin-bottom: -1px;
    white-space: nowrap;
    transition: color .18s ease;
}
.slc-tabbtn:hover { color: var(--slc-text); }
.slc-tabbtn.on { color: var(--slc-primary); }
.slc-tabbtn.on::after {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: -1px;
    height: 3px;
    border-radius: 3px 3px 0 0;
    background: linear-gradient(90deg, var(--slc-primary), var(--slc-accent));
}
.slc-panel {
    display: none;
    padding: 22px 24px;
    border-radius: var(--slc-radius);
    background: var(--slc-surface);
    border: 1px solid var(--slc-border);
    box-shadow: var(--slc-shadow);
}
.slc-panel.on { display: block; }
.slc-panel h2 {
    margin: 20px 0 8px;
    font-size: 17px;
    font-weight: 800;
    color: var(--slc-text);
}
.slc-panel h2:first-child { margin-top: 0; }
.slc-panel p,
.slc-panel li {
    font-size: 14.5px;
    line-height: 1.95;
    color: var(--slc-text-soft);
}
.slc-panel ol,
.slc-panel ul { margin: 0 0 12px; padding-left: 22px; }
.slc-timeline { list-style: none; padding: 0; margin: 0; }
.slc-timeline li {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 14px 16px;
    border-radius: var(--slc-radius-sm);
    background: var(--slc-surface-2);
    border: 1px solid var(--slc-border);
    border-left: 3px solid var(--slc-accent);
    margin-bottom: 10px;
}
.slc-timeline .ver { font-family: var(--slc-mono); font-size: 13px; font-weight: 800; color: var(--slc-accent-deep); }
:root[data-theme="dark"] .slc-timeline .ver { color: var(--slc-accent); }
.slc-timeline .date { font-size: 12.5px; color: var(--slc-text-muted); }
.slc-timeline .txt { flex: 1 1 100%; font-size: 13.5px; line-height: 1.85; }
.slc-faq details {
    border: 1px solid var(--slc-border);
    border-radius: var(--slc-radius-sm);
    background: var(--slc-surface-2);
    margin-bottom: 8px;
    overflow: hidden;
}
.slc-faq summary {
    padding: 12px 16px;
    font-size: 14.5px;
    font-weight: 700;
    color: var(--slc-text);
    cursor: pointer;
    background: var(--slc-surface);
}
.slc-faq .a {
    padding: 12px 16px;
    font-size: 13.5px;
    line-height: 1.9;
    color: var(--slc-text-soft);
    border-top: 1px dashed var(--slc-border);
}
.slc-notes {
    width: 100%;
    min-width: 520px;
    border-collapse: collapse;
    font-size: 13.5px;
}
.slc-notes th,
.slc-notes td {
    padding: 11px 14px;
    border-bottom: 1px solid var(--slc-border);
    vertical-align: top;
    text-align: left;
    line-height: 1.8;
}
.slc-notes tbody tr:last-child th,
.slc-notes tbody tr:last-child td { border-bottom: none; }
.slc-notes th {
    width: 122px;
    font-size: 13px;
    font-weight: 700;
    color: var(--slc-primary-deep);
    background: var(--slc-primary-soft);
    white-space: nowrap;
}
:root[data-theme="dark"] .slc-notes th { color: var(--slc-primary-2); }
.slc-notes td { color: var(--slc-text-soft); }

/* ---------------- 相关工具 ---------------- */
.slc-related {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--slc-border);
}
.slc-related h2 {
    margin: 0 0 16px;
    font-size: 20px;
    font-weight: 800;
    color: var(--slc-text);
}
.slc-rel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
}
.slc-rel {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-radius: var(--slc-radius-sm);
    background: var(--slc-surface);
    border: 1px solid var(--slc-border);
    text-decoration: none;
    transition: transform .12s, box-shadow .15s;
}
.slc-rel:hover { transform: translateY(-2px); box-shadow: var(--slc-shadow); }
.slc-rel .ri {
    flex: 0 0 auto;
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 19px;
    border-radius: 10px;
    background: var(--slc-primary-soft);
}
.slc-rel b { display: block; font-size: 14px; color: var(--slc-text); }
.slc-rel small { display: block; font-size: 12px; color: var(--slc-text-muted); }

/* ---------------- 弹窗 / 提示 ---------------- */
.slc-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.slc-modal[hidden] { display: none !important; }
.slc-modal-mask {
    position: absolute;
    inset: 0;
    background: rgba(22, 35, 44, .58);
    backdrop-filter: blur(2px);
}
.slc-modal-box {
    position: relative;
    width: min(720px, 100%);
    max-height: 84vh;
    display: flex;
    flex-direction: column;
    border-radius: var(--slc-radius);
    background: var(--slc-surface);
    border: 1px solid var(--slc-border-strong);
    box-shadow: var(--slc-shadow-lg);
    overflow: hidden;
}
.slc-modal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 18px;
    background: var(--slc-primary-soft);
    border-bottom: 1px solid var(--slc-border);
}
.slc-modal-head h3 {
    margin: 0;
    font-size: 16.5px;
    font-weight: 800;
    color: var(--slc-primary-deep);
}
:root[data-theme="dark"] .slc-modal-head h3 { color: var(--slc-primary-2); }
.slc-modal-x {
    width: 30px;
    height: 30px;
    font-size: 15px;
    color: var(--slc-text-soft);
    background: transparent;
    border: 1px solid var(--slc-border);
    border-radius: 50%;
    cursor: pointer;
}
.slc-modal-body { padding: 18px 20px; overflow: auto; }
.slc-modal-body p {
    margin: 0 0 10px;
    font-size: 14px;
    line-height: 1.9;
    color: var(--slc-text-soft);
}
.slc-modal-body b { color: var(--slc-primary); font-weight: 700; }
.slc-modal-foot {
    padding: 12px 18px;
    border-top: 1px solid var(--slc-border);
    text-align: right;
}
.slc-toast {
    position: fixed;
    left: 50%;
    bottom: 34px;
    transform: translateX(-50%) translateY(20px);
    z-index: 10000;
    padding: 10px 20px;
    border-radius: 999px;
    font-size: 13.5px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--slc-primary), var(--slc-primary-deep));
    box-shadow: var(--slc-shadow-lg);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s, transform .2s;
}
.slc-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ---------------- A4 打印单 ---------------- */
.slc-sheet { display: none; }

@media print {
    body * { visibility: hidden !important; }
    .slc-sheet, .slc-sheet * { visibility: visible !important; }
    .slc-sheet {
        display: block !important;
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        padding: 12mm 14mm;
        color: #000;
        background: #fff;
    }
    .slc-sheet-title { font-size: 18pt; font-weight: 800; margin: 0 0 4pt; }
    .slc-sheet-sub { font-size: 10pt; color: #444; margin: 0 0 8pt; }
    .slc-sheet-meta { font-size: 10pt; color: #333; margin: 0 0 8pt; line-height: 1.7; }
    .slc-sheet-table { width: 100%; border-collapse: collapse; font-size: 9.5pt; }
    .slc-sheet-table th,
    .slc-sheet-table td { border: 1px solid #999; padding: 3.6mm 2mm; text-align: left; }
    .slc-sheet-table th { background: #f2f2f2; }
    .slc-sheet-field { margin-top: 6mm; font-size: 10pt; line-height: 1.9; }
    .slc-sheet-field b { display: inline-block; min-width: 62mm; }
    .slc-sheet-foot { margin-top: 8pt; font-size: 9pt; color: #555; }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1080px) {
    .slc-hero { grid-template-columns: minmax(0, 1fr); }
    .slc-result { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 760px) {
    .slc-hero-copy h1 { font-size: 27px; }
    .slc-steps { grid-template-columns: minmax(0, 1fr); }
    .slc-field { min-width: 100%; }
    .slc-desk-btns { margin-left: 0; width: 100%; }
    .slc-btn { flex: 1 1 auto; justify-content: center; }
    .slc-res-kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .slc-res-value b { font-size: 36px; }
    .slc-panel { padding: 18px 16px; }
    .slc-card { padding: 16px 14px; }
    .slc-notes { min-width: 460px; }
}