/* ============================================================
   周期问题应用题练习（olympic-cycle-drill）
   主题：湖青 #0e7490 + 蜜橙 #f97316（与站内其它工具页完全错开）
   深浅双主题：跟随导航栏 #themeToggle（data-theme 挂在 <html>）
   ============================================================ */

/* 变量作用域：主体与浮层（弹窗 / 打印单 / 提示条）同域声明，避免浮层取不到变量 */
.ocd-page,
.ocd-modal,
.ocd-sheet,
.ocd-toast {
    --ocd-primary: #0e7490;
    --ocd-primary-2: #0891b2;
    --ocd-primary-deep: #155e75;
    --ocd-accent: #f97316;
    --ocd-accent-2: #fb923c;
    --ocd-accent-soft: #fff1e6;
    --ocd-primary-soft: #e0f4f8;
    --ocd-bg: #f2f8fa;
    --ocd-surface: #ffffff;
    --ocd-surface-2: #f7fbfc;
    --ocd-border: rgba(14, 116, 144, .16);
    --ocd-border-strong: rgba(14, 116, 144, .3);
    --ocd-text: #0d2b33;
    --ocd-text-soft: #4b6a72;
    --ocd-text-muted: #7d97a0;
    --ocd-shadow: 0 14px 34px -20px rgba(8, 67, 82, .38);
    --ocd-shadow-lg: 0 26px 60px -30px rgba(8, 67, 82, .5);
    --ocd-radius: 18px;
    --ocd-radius-sm: 11px;
    color: var(--ocd-text);
    font-size: 15px;
    line-height: 1.75;
}

:root[data-theme="dark"] .ocd-page,
:root[data-theme="dark"] .ocd-modal,
:root[data-theme="dark"] .ocd-sheet,
:root[data-theme="dark"] .ocd-toast {
    --ocd-primary: #38bcd8;
    --ocd-primary-2: #22d3ee;
    --ocd-primary-deep: #0e7490;
    --ocd-accent: #fb923c;
    --ocd-accent-2: #fdba74;
    --ocd-accent-soft: rgba(251, 146, 60, .16);
    --ocd-primary-soft: rgba(56, 188, 216, .14);
    --ocd-bg: #08181d;
    --ocd-surface: #0e242b;
    --ocd-surface-2: #122c34;
    --ocd-border: rgba(56, 188, 216, .18);
    --ocd-border-strong: rgba(56, 188, 216, .34);
    --ocd-text: #e2f4f7;
    --ocd-text-soft: #a5c4cc;
    --ocd-text-muted: #7ba0a9;
    --ocd-shadow: 0 14px 34px -20px rgba(0, 0, 0, .8);
    --ocd-shadow-lg: 0 26px 60px -30px rgba(0, 0, 0, .9);
}

.ocd-page *,
.ocd-page *::before,
.ocd-page *::after { box-sizing: border-box; }

/* hidden 属性需覆盖布局类的 display（否则 grid/flex 会盖掉 UA 的 [hidden]） */
.ocd-page [hidden] { display: none !important; }

.ocd-page b { font-weight: 700; color: var(--ocd-primary); }
:root[data-theme="dark"] .ocd-page b { color: var(--ocd-primary-2); }

/* ---------------- 首屏 ---------------- */
.ocd-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 1fr);
    gap: 34px;
    align-items: start;
    margin-bottom: 26px;
}

.ocd-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 12.5px;
    font-weight: 700;
    letter-spacing: .02em;
    color: var(--ocd-primary);
    background: var(--ocd-primary-soft);
    border: 1px solid var(--ocd-border);
}

.ocd-hero-copy h1 {
    margin: 16px 0 12px;
    font-size: 40px;
    line-height: 1.18;
    font-weight: 900;
    letter-spacing: -.02em;
    background: linear-gradient(120deg, var(--ocd-primary-deep), var(--ocd-primary) 46%, var(--ocd-accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
:root[data-theme="dark"] .ocd-hero-copy h1 {
    background: linear-gradient(120deg, #7dd3fc, #38bcd8 44%, #fb923c);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.ocd-lead {
    margin: 0 0 18px;
    font-size: 16px;
    line-height: 1.95;
    color: var(--ocd-text-soft);
    max-width: 62ch;
}

.ocd-tags {
    list-style: none;
    margin: 0 0 20px;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.ocd-tags li {
    font-size: 12.5px;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: 999px;
    color: var(--ocd-text-soft);
    background: var(--ocd-surface);
    border: 1px solid var(--ocd-border);
}

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

/* ---------------- 环形周期表 ---------------- */
.ocd-dial {
    padding: 18px 18px 16px;
    border-radius: var(--ocd-radius);
    background:
        radial-gradient(120% 100% at 100% 0%, var(--ocd-primary-soft), transparent 62%),
        var(--ocd-surface);
    border: 1px solid var(--ocd-border);
    box-shadow: var(--ocd-shadow-lg);
    position: sticky;
    top: 92px;
}
.ocd-dial-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 10px;
}
.ocd-dial-head b { font-size: 14px; color: var(--ocd-text); font-weight: 800; }
.ocd-dial-head span { font-size: 12px; color: var(--ocd-text-muted); }

.ocd-ring { width: 100%; }
.ocd-ring svg { width: 100%; height: auto; display: block; }
.ocd-ring .seg { transition: opacity .2s ease, stroke-width .2s ease; }
.ocd-ring .lbl { font-size: 13px; font-weight: 700; }
.ocd-ring .idx { font-size: 10.5px; font-weight: 600; }

.ocd-ring-foot {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 10px;
}
.ocd-ring-stat {
    padding: 9px 12px;
    border-radius: var(--ocd-radius-sm);
    background: var(--ocd-surface-2);
    border: 1px solid var(--ocd-border);
}
.ocd-ring-stat span { display: block; font-size: 11.5px; color: var(--ocd-text-muted); }
.ocd-ring-stat b { font-size: 17px; font-weight: 800; color: var(--ocd-primary); }

/* ---------------- 操作台 ---------------- */
.ocd-desk {
    border-radius: var(--ocd-radius);
    background: var(--ocd-surface);
    border: 1px solid var(--ocd-border);
    box-shadow: var(--ocd-shadow);
    overflow: hidden;
    margin-bottom: 18px;
}
.ocd-desk-tabs {
    display: flex;
    gap: 4px;
    padding: 10px 12px 0;
    background: linear-gradient(180deg, var(--ocd-surface-2), transparent);
    border-bottom: 1px solid var(--ocd-border);
    overflow-x: auto;
}
.ocd-tab {
    appearance: none;
    border: 1px solid transparent;
    border-bottom: none;
    background: none;
    cursor: pointer;
    padding: 10px 16px;
    border-radius: 10px 10px 0 0;
    font-size: 14px;
    font-weight: 700;
    color: var(--ocd-text-soft);
    transition: all .18s ease;
    white-space: nowrap;
}
.ocd-tab:hover { color: var(--ocd-primary); }
.ocd-tab.is-on {
    color: var(--ocd-primary);
    background: var(--ocd-surface);
    border-color: var(--ocd-border);
    box-shadow: inset 0 3px 0 var(--ocd-accent);
}

.ocd-desk-body { padding: 20px 20px 16px; }
.ocd-desk-row {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    gap: 16px;
    align-items: start;
}
.ocd-desk-row[data-ocd-pane="weekday"] { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.ocd-field { min-width: 0; }
.ocd-field--wide { min-width: 0; }
.ocd-label {
    display: flex;
    align-items: baseline;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--ocd-text);
    margin-bottom: 6px;
}
.ocd-label span { font-size: 11.5px; font-weight: 500; color: var(--ocd-text-muted); }
.ocd-input {
    width: 100%;
    border: 1px solid var(--ocd-border-strong);
    border-radius: var(--ocd-radius-sm);
    padding: 10px 13px;
    font-size: 15px;
    font-family: inherit;
    color: var(--ocd-text);
    background: var(--ocd-surface-2);
    outline: none;
    transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}
.ocd-input:focus {
    background: var(--ocd-surface);
    border-color: var(--ocd-primary);
    box-shadow: 0 0 0 4px var(--ocd-primary-soft);
}
.ocd-input[readonly] { color: var(--ocd-text-soft); background: var(--ocd-surface-2); }
.ocd-hint {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    line-height: 1.65;
    color: var(--ocd-text-muted);
}
.ocd-hint--inline { margin: 0; align-self: center; }
.ocd-hint kbd {
    font-family: inherit;
    font-size: 11px;
    padding: 1px 6px;
    border-radius: 5px;
    border: 1px solid var(--ocd-border-strong);
    background: var(--ocd-surface-2);
}

.ocd-desk-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px dashed var(--ocd-border);
}

.ocd-presets {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    padding: 14px 20px 18px;
    background: var(--ocd-surface-2);
    border-top: 1px solid var(--ocd-border);
}
.ocd-preset-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--ocd-text-muted);
    letter-spacing: .04em;
    margin-right: 4px;
}
.ocd-chip {
    appearance: none;
    cursor: pointer;
    border: 1px solid var(--ocd-border-strong);
    background: var(--ocd-surface);
    color: var(--ocd-text-soft);
    border-radius: 999px;
    padding: 6px 14px;
    font-size: 12.5px;
    font-weight: 600;
    font-family: inherit;
    transition: all .16s ease;
}
.ocd-chip:hover {
    color: var(--ocd-primary);
    border-color: var(--ocd-primary);
    background: var(--ocd-primary-soft);
    transform: translateY(-1px);
}

/* ---------------- 按钮 ---------------- */
.ocd-btn {
    appearance: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    font-weight: 700;
    color: var(--ocd-text);
    background: var(--ocd-surface);
    border: 1px solid var(--ocd-border-strong);
    border-radius: 10px;
    padding: 10px 18px;
    transition: transform .14s ease, box-shadow .2s ease, background .18s ease, border-color .18s ease;
}
.ocd-btn:hover { transform: translateY(-1px); border-color: var(--ocd-primary); color: var(--ocd-primary); }
.ocd-btn--primary {
    color: #fff;
    border-color: transparent;
    background: linear-gradient(135deg, var(--ocd-primary), var(--ocd-primary-2));
    box-shadow: 0 8px 20px -8px var(--ocd-primary);
}
.ocd-btn--primary:hover { color: #fff; box-shadow: 0 12px 26px -10px var(--ocd-primary); }
.ocd-btn--accent {
    color: #fff;
    border-color: transparent;
    background: linear-gradient(135deg, var(--ocd-accent), var(--ocd-accent-2));
    box-shadow: 0 8px 20px -8px var(--ocd-accent);
}
.ocd-btn--ghost { background: transparent; color: var(--ocd-text-soft); }
.ocd-btn--sm { padding: 8px 14px; font-size: 13px; }
.ocd-btn-row { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------------- 错误条 ---------------- */
.ocd-errbar {
    margin: 0 0 18px;
    padding: 12px 16px;
    border-radius: var(--ocd-radius-sm);
    font-size: 13.5px;
    font-weight: 600;
    color: #9a3412;
    background: #fff7ed;
    border: 1px solid #fdba74;
}
:root[data-theme="dark"] .ocd-errbar {
    color: #fdba74;
    background: rgba(251, 146, 60, .12);
    border-color: rgba(251, 146, 60, .38);
}
.ocd-errbar.is-warn { color: #92400e; background: #fffbeb; border-color: #fcd34d; }
:root[data-theme="dark"] .ocd-errbar.is-warn { color: #fcd34d; background: rgba(250, 204, 21, .12); border-color: rgba(250, 204, 21, .35); }

/* ---------------- 结论区 ---------------- */
.ocd-verdict {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 22px;
    align-items: center;
    padding: 26px 28px;
    border-radius: var(--ocd-radius);
    margin-bottom: 18px;
    color: #eaf7fa;
    background:
        radial-gradient(90% 140% at 100% 0%, rgba(249, 115, 22, .34), transparent 58%),
        linear-gradient(135deg, #0b4a59, #0e7490 62%, #0f7f9e);
    box-shadow: var(--ocd-shadow-lg);
}
:root[data-theme="dark"] .ocd-verdict {
    background:
        radial-gradient(90% 140% at 100% 0%, rgba(249, 115, 22, .3), transparent 58%),
        linear-gradient(135deg, #072f39, #0c4f5e 62%, #106274);
    border: 1px solid rgba(56, 188, 216, .26);
}
.ocd-verdict-label {
    font-size: 12px;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, .72);
    margin-bottom: 6px;
}
.ocd-verdict-value {
    font-size: 40px;
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -.02em;
    color: #fff;
    word-break: break-word;
}
.ocd-verdict-value em {
    font-style: normal;
    color: #ffd7a8;
}
.ocd-verdict-sub {
    margin-top: 8px;
    font-size: 13.5px;
    line-height: 1.8;
    color: rgba(255, 255, 255, .82);
}

.ocd-formula-title {
    font-size: 12px;
    letter-spacing: .12em;
    color: rgba(255, 255, 255, .7);
    margin-bottom: 8px;
}
.ocd-formula-body {
    font-size: 15px;
    line-height: 2;
    color: #fff;
    font-variant-numeric: tabular-nums;
}
.ocd-formula-body .fm {
    display: block;
    padding: 3px 0;
}
.ocd-formula-body .fm b { color: #ffd7a8; font-weight: 800; }
.ocd-formula-body .fm .tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    padding: 1px 8px;
    border-radius: 999px;
    margin-right: 8px;
    background: rgba(255, 255, 255, .16);
    color: #fff;
}
.ocd-formula-body .fm--key .tag { background: var(--ocd-accent); }

/* ---------------- 刻度带 ---------------- */
.ocd-scale-card {
    padding: 22px 24px;
    border-radius: var(--ocd-radius);
    background: var(--ocd-surface);
    border: 1px solid var(--ocd-border);
    box-shadow: var(--ocd-shadow);
    margin-bottom: 18px;
}
.ocd-scale {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 14px;
}
.ocd-tick {
    position: relative;
    min-width: 66px;
    padding: 10px 12px 9px;
    border-radius: var(--ocd-radius-sm);
    text-align: center;
    background: var(--ocd-surface-2);
    border: 1px solid var(--ocd-border);
    transition: transform .18s ease, box-shadow .18s ease;
}
.ocd-tick .no {
    display: block;
    font-size: 11px;
    color: var(--ocd-text-muted);
    font-variant-numeric: tabular-nums;
}
.ocd-tick .v {
    display: block;
    font-size: 18px;
    font-weight: 800;
    color: var(--ocd-text);
    line-height: 1.4;
    word-break: break-all;
}
.ocd-tick.is-hit {
    background: linear-gradient(160deg, var(--ocd-accent), var(--ocd-accent-2));
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: 0 12px 24px -12px var(--ocd-accent);
}
.ocd-tick.is-hit .no { color: rgba(255, 255, 255, .85); }
.ocd-tick.is-hit .v { color: #fff; }
.ocd-tick.is-mini::after {
    content: "最小周期";
    position: absolute;
    left: 50%;
    bottom: -9px;
    transform: translateX(-50%);
    font-size: 10px;
    font-weight: 700;
    padding: 1px 7px;
    border-radius: 999px;
    color: var(--ocd-primary);
    background: var(--ocd-primary-soft);
    white-space: nowrap;
}

/* ---------------- 卡片 ---------------- */
.ocd-duo {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 18px;
}
.ocd-card {
    padding: 22px 24px;
    border-radius: var(--ocd-radius);
    background: var(--ocd-surface);
    border: 1px solid var(--ocd-border);
    box-shadow: var(--ocd-shadow);
    min-width: 0;
}
.ocd-card-head { margin-bottom: 14px; }
.ocd-card-title {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 9px;
    margin: 0 0 8px;
    font-size: 19px;
    font-weight: 800;
    letter-spacing: -.01em;
    color: var(--ocd-text);
}
.ocd-ic {
    display: inline-grid;
    place-items: center;
    width: 30px;
    height: 30px;
    border-radius: 9px;
    font-size: 15px;
    background: var(--ocd-primary-soft);
    flex-shrink: 0;
}
.ocd-card-desc {
    margin: 0;
    font-size: 13.5px;
    line-height: 1.85;
    color: var(--ocd-text-soft);
}
.ocd-card-desc code {
    font-size: 12.5px;
    padding: 1px 6px;
    border-radius: 5px;
    background: var(--ocd-surface-2);
    border: 1px solid var(--ocd-border);
    color: var(--ocd-primary);
}
.ocd-grid2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

/* ---------------- 表格 ---------------- */
.ocd-table-wrap {
    margin-top: 14px;
    overflow-x: auto;
    border-radius: var(--ocd-radius-sm);
    border: 1px solid var(--ocd-border);
}
.ocd-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
    min-width: 420px;
}
.ocd-table th,
.ocd-table td {
    padding: 9px 12px;
    text-align: left;
    border-bottom: 1px solid var(--ocd-border);
    white-space: nowrap;
}
.ocd-table thead th {
    font-size: 12px;
    font-weight: 700;
    color: var(--ocd-text-muted);
    background: var(--ocd-surface-2);
    letter-spacing: .03em;
}
.ocd-table tbody tr:last-child td { border-bottom: none; }
.ocd-table tbody tr:hover td { background: var(--ocd-surface-2); }
.ocd-table .t-num { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--ocd-text); }
.ocd-table .t-val { font-weight: 800; color: var(--ocd-accent); }
.ocd-table .t-dim { color: var(--ocd-text-muted); font-variant-numeric: tabular-nums; }
.ocd-table .empty {
    text-align: center;
    color: var(--ocd-text-muted);
    padding: 26px 12px;
    white-space: normal;
}

/* ---------------- 键值行 ---------------- */
.ocd-rows { display: flex; flex-direction: column; gap: 8px; }
.ocd-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    padding: 10px 14px;
    border-radius: var(--ocd-radius-sm);
    background: var(--ocd-surface-2);
    border: 1px solid var(--ocd-border);
    font-size: 13.5px;
}
.ocd-row .k { color: var(--ocd-text-soft); flex-shrink: 0; }
.ocd-row .v { font-weight: 700; color: var(--ocd-text); text-align: right; word-break: break-word; }
.ocd-row.is-good { border-color: rgba(16, 185, 129, .4); background: rgba(16, 185, 129, .08); }
.ocd-row.is-good .v { color: #047857; }
.ocd-row.is-bad { border-color: rgba(249, 115, 22, .45); background: var(--ocd-accent-soft); }
.ocd-row.is-bad .v { color: var(--ocd-accent); }
:root[data-theme="dark"] .ocd-row.is-good .v { color: #34d399; }

.ocd-reverse-out {
    margin-top: 14px;
    padding: 14px 16px;
    border-radius: var(--ocd-radius-sm);
    font-size: 13.5px;
    line-height: 1.9;
    color: var(--ocd-text-soft);
    background: var(--ocd-surface-2);
    border: 1px dashed var(--ocd-border-strong);
}
.ocd-reverse-out .ro-line { display: flex; gap: 8px; }
.ocd-reverse-out .ro-line b { flex-shrink: 0; min-width: 84px; }
.ocd-reverse-out .ro-ans {
    margin-top: 8px;
    font-size: 16px;
    font-weight: 800;
    color: var(--ocd-accent);
}
.ocd-reverse-out .ro-none { color: #9a3412; font-weight: 700; }
:root[data-theme="dark"] .ocd-reverse-out .ro-none { color: #fdba74; }

/* ---------------- 口径表 ---------------- */
.ocd-notes {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
    margin-top: 4px;
}
.ocd-notes th,
.ocd-notes td {
    padding: 11px 14px;
    border: 1px solid var(--ocd-border);
    text-align: left;
    vertical-align: top;
    line-height: 1.85;
}
.ocd-notes th {
    width: 132px;
    background: var(--ocd-surface-2);
    font-weight: 700;
    color: var(--ocd-text);
    white-space: nowrap;
}
.ocd-notes td { color: var(--ocd-text-soft); }
.ocd-notes code {
    font-size: 12.5px;
    padding: 1px 6px;
    border-radius: 5px;
    background: var(--ocd-primary-soft);
    color: var(--ocd-primary);
    white-space: nowrap;
}

/* ---------------- 底部标签页 ---------------- */
.ocd-tabs {
    display: flex;
    gap: 6px;
    border-bottom: 1px solid var(--ocd-border);
    margin: 26px 0 22px;
    overflow-x: auto;
}
.ocd-tabbtn {
    appearance: none;
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    padding: 13px 18px;
    font-size: 15px;
    font-weight: 700;
    color: var(--ocd-text-soft);
    position: relative;
    border-bottom: 0;
    margin-bottom: -1px;
    white-space: nowrap;
    transition: color .18s ease;
}
.ocd-tabbtn:hover { color: var(--ocd-text); }
.ocd-tabbtn.on { color: var(--ocd-primary); }
.ocd-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(--ocd-primary), var(--ocd-accent));
}

/* 口径说明标题右侧标语 */
.ocd-note-sub {
    margin-left: auto;
    font-size: 12.5px;
    font-weight: 500;
    letter-spacing: 0;
    color: var(--ocd-text-muted);
}

.ocd-panel { display: none; }
.ocd-panel.on { display: block; }
.ocd-panel h2 {
    font-size: 20px;
    font-weight: 800;
    margin: 26px 0 12px;
    letter-spacing: -.01em;
    color: var(--ocd-text);
}
.ocd-panel h2:first-child { margin-top: 0; }
.ocd-panel p {
    margin: 0 0 14px;
    font-size: 14.5px;
    line-height: 2;
    color: var(--ocd-text-soft);
}
.ocd-panel ol,
.ocd-panel ul { margin: 0 0 16px; padding-left: 22px; }
.ocd-panel li {
    font-size: 14.5px;
    line-height: 2;
    color: var(--ocd-text-soft);
    margin-bottom: 4px;
}

.ocd-faq { display: flex; flex-direction: column; gap: 10px; }
.ocd-faq details {
    border: 1px solid var(--ocd-border);
    border-radius: var(--ocd-radius-sm);
    background: var(--ocd-surface-2);
    overflow: hidden;
}
.ocd-faq summary {
    list-style: none;
    cursor: pointer;
    padding: 13px 42px 13px 16px;
    font-size: 14.5px;
    font-weight: 700;
    color: var(--ocd-text);
    position: relative;
    line-height: 1.7;
}
.ocd-faq summary::-webkit-details-marker { display: none; }
.ocd-faq summary::after {
    content: "＋";
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-weight: 700;
    color: var(--ocd-primary);
}
.ocd-faq details[open] summary::after { content: "－"; }
.ocd-faq .a {
    padding: 12px 16px 15px;
    font-size: 13.5px;
    line-height: 1.95;
    color: var(--ocd-text-soft);
    border-top: 1px dashed var(--ocd-border);
}

.ocd-timeline { list-style: none; padding: 0; margin: 0; }
.ocd-timeline li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 14px 0;
    border-bottom: 1px dashed var(--ocd-border);
    flex-wrap: wrap;
}
.ocd-timeline .ver {
    font-size: 12px;
    font-weight: 800;
    padding: 3px 10px;
    border-radius: 999px;
    color: var(--ocd-primary);
    background: var(--ocd-primary-soft);
}
.ocd-timeline .date { font-size: 13px; color: var(--ocd-text-muted); }
.ocd-timeline .txt { flex: 1 1 100%; font-size: 13.5px; line-height: 1.9; color: var(--ocd-text-soft); }

/* ---------------- 相关工具 ---------------- */
.ocd-related {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--ocd-border);
}
.ocd-related h2 { font-size: 20px; font-weight: 800; margin: 0 0 16px; }
.ocd-rel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 12px;
}
.ocd-rel {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 15px;
    border-radius: var(--ocd-radius-sm);
    text-decoration: none;
    background: var(--ocd-surface);
    border: 1px solid var(--ocd-border);
    transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.ocd-rel:hover {
    transform: translateY(-2px);
    border-color: var(--ocd-primary);
    box-shadow: var(--ocd-shadow);
}
.ocd-rel .ri {
    flex-shrink: 0;
    width: 38px;
    height: 38px;
    border-radius: 11px;
    display: grid;
    place-items: center;
    font-size: 18px;
    background: var(--ocd-primary-soft);
}
.ocd-rel span:last-child { min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.ocd-rel b { font-size: 14px; font-weight: 700; color: var(--ocd-text); }
.ocd-rel small { font-size: 12px; color: var(--ocd-text-muted); line-height: 1.5; }

/* ---------------- CSV 预览 ---------------- */
.ocd-pre {
    margin: 14px 0 0;
    padding: 14px 16px;
    border-radius: var(--ocd-radius-sm);
    background: var(--ocd-surface-2);
    border: 1px solid var(--ocd-border);
    font-size: 12px;
    line-height: 1.85;
    color: var(--ocd-text-soft);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 320px;
    overflow: auto;
}

/* ---------------- 弹窗（仅在用户点击后触发） ---------------- */
.ocd-modal {
    position: fixed;
    inset: 0;
    z-index: 9990;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.ocd-modal[hidden] { display: none; }
.ocd-modal-mask {
    position: absolute;
    inset: 0;
    background: rgba(6, 30, 36, .58);
    backdrop-filter: blur(2px);
}
.ocd-modal-box {
    position: relative;
    width: min(620px, 100%);
    max-height: 84vh;
    display: flex;
    flex-direction: column;
    border-radius: var(--ocd-radius);
    background: var(--ocd-surface);
    border: 1px solid var(--ocd-border);
    box-shadow: var(--ocd-shadow-lg);
    overflow: hidden;
    animation: ocd-pop .22s ease;
}
@keyframes ocd-pop {
    from { opacity: 0; transform: translateY(14px) scale(.98); }
    to { opacity: 1; transform: none; }
}
.ocd-modal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--ocd-border);
    background: var(--ocd-surface-2);
}
.ocd-modal-head h3 { margin: 0; font-size: 17px; font-weight: 800; color: var(--ocd-text); }
.ocd-modal-x {
    appearance: none;
    border: 1px solid var(--ocd-border);
    background: var(--ocd-surface);
    color: var(--ocd-text-soft);
    width: 30px;
    height: 30px;
    border-radius: 9px;
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
}
.ocd-modal-x:hover { color: var(--ocd-accent); border-color: var(--ocd-accent); }
.ocd-modal-body {
    padding: 18px 20px;
    overflow: auto;
    font-size: 14px;
    line-height: 1.95;
    color: var(--ocd-text-soft);
}
.ocd-modal-body .md-step {
    display: flex;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px dashed var(--ocd-border);
}
.ocd-modal-body .md-step:last-child { border-bottom: none; }
.ocd-modal-body .md-no {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 8px;
    display: grid;
    place-items: center;
    font-size: 12px;
    font-weight: 800;
    color: #fff;
    background: var(--ocd-primary);
}
.ocd-modal-foot {
    padding: 14px 20px;
    border-top: 1px solid var(--ocd-border);
    display: flex;
    justify-content: flex-end;
    background: var(--ocd-surface-2);
}

/* ---------------- toast ---------------- */
.ocd-toast {
    position: fixed;
    left: 50%;
    bottom: 30px;
    transform: translateX(-50%) translateY(12px);
    z-index: 9995;
    padding: 11px 22px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    background: rgba(9, 56, 67, .95);
    box-shadow: 0 12px 30px rgba(6, 40, 48, .3);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
    max-width: 88vw;
    text-align: center;
}
.ocd-toast.on { opacity: 1; transform: translateX(-50%) translateY(0); }

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

@media print {
    body > *:not(.detail-wrap) { display: none !important; }
    .detail-wrap > .container > *:not(.ocd-sheet) { display: none !important; }
    .ocd-sheet {
        display: block !important;
        padding: 12mm 10mm;
        background: #fff;
        color: #000;
        font-size: 13px;
        line-height: 1.8;
    }
    .ocd-sheet h1 { font-size: 20px; margin: 0 0 4px; }
    .ocd-sheet .sh-sub { font-size: 12px; color: #444; margin-bottom: 12px; }
    .ocd-sheet .sh-q { font-weight: 700; margin: 10px 0 6px; }
    .ocd-sheet table { width: 100%; border-collapse: collapse; margin-top: 8px; }
    .ocd-sheet th, .ocd-sheet td { border: 1px solid #999; padding: 5px 8px; font-size: 12px; }
    .ocd-sheet th { background: #f0f0f0; }
    .ocd-sheet .sh-space { height: 22mm; border: 1px dashed #bbb; margin-top: 8px; }
    .ocd-sheet .sh-ans { margin-top: 10px; padding: 10px; border: 1px solid #999; }
    .ocd-sheet .sh-foot { margin-top: 14px; font-size: 11px; color: #555; }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1080px) {
    .ocd-hero { grid-template-columns: 1fr; }
    .ocd-dial { position: static; max-width: 460px; }
    .ocd-duo { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
    .ocd-hero-copy h1 { font-size: 31px; }
    .ocd-lead { font-size: 15px; }
    .ocd-steps { grid-template-columns: 1fr; }
    .ocd-desk-row,
    .ocd-desk-row[data-ocd-pane="weekday"] { grid-template-columns: 1fr; }
    .ocd-grid2 { grid-template-columns: 1fr; }
    .ocd-verdict { grid-template-columns: 1fr; padding: 22px; }
    .ocd-verdict-value { font-size: 32px; }
    .ocd-card, .ocd-scale-card { padding: 18px; }
    .ocd-notes th { width: auto; }
}