/* ============================================================
   带余除法与余数练习（remainder-division-drill）
   主题：深松绿 #14532d + 陶土橙 #c2410c + 方格纸（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>）
   标志性 UI：方格纸竖式演算区 + 等宽 ASCII 竖式
   ============================================================ */

/* 变量作用域：.rmd-page 主体 + 浮层（弹窗 / 打印单 / 提示条）都在根 div 之外，
   必须同作用域声明，否则浮层取不到变量导致背景失效、内容与页面重叠 */
.rmd-page,
.rmd-modal,
.rmd-sheet,
.rmd-toast {
    --rmd-primary: #14532d;
    --rmd-primary-2: #1d7a43;
    --rmd-primary-deep: #0b3319;
    --rmd-accent: #c2410c;
    --rmd-accent-2: #ea580c;
    --rmd-accent-deep: #8a2c06;
    --rmd-primary-soft: #e7f3ea;
    --rmd-accent-soft: #fdece0;
    --rmd-paper: #fbfdfb;
    --rmd-grid: rgba(20, 83, 45, .14);
    --rmd-grid-strong: rgba(20, 83, 45, .3);
    --rmd-bg: #f3f8f4;
    --rmd-surface: #ffffff;
    --rmd-surface-2: #f6faf7;
    --rmd-border: rgba(20, 83, 45, .18);
    --rmd-border-strong: rgba(20, 83, 45, .36);
    --rmd-text: #16281c;
    --rmd-text-soft: #43584a;
    --rmd-text-muted: #7b8f82;
    --rmd-shadow: 0 14px 34px -20px rgba(12, 60, 30, .38);
    --rmd-shadow-lg: 0 26px 60px -30px rgba(12, 60, 30, .5);
    --rmd-radius: 18px;
    --rmd-radius-sm: 11px;
    --rmd-mono: "Cascadia Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
}
.rmd-page {
    color: var(--rmd-text);
    font-size: 15px;
    line-height: 1.78;
}

:root[data-theme="dark"] .rmd-page,
:root[data-theme="dark"] .rmd-modal,
:root[data-theme="dark"] .rmd-sheet,
:root[data-theme="dark"] .rmd-toast {
    --rmd-primary: #6ee7a0;
    --rmd-primary-2: #86efac;
    --rmd-primary-deep: #14532d;
    --rmd-accent: #fb923c;
    --rmd-accent-2: #fdba74;
    --rmd-accent-deep: #c2410c;
    --rmd-primary-soft: rgba(110, 231, 160, .14);
    --rmd-accent-soft: rgba(251, 146, 60, .16);
    --rmd-paper: #10241a;
    --rmd-grid: rgba(134, 239, 172, .14);
    --rmd-grid-strong: rgba(134, 239, 172, .34);
    --rmd-bg: #0b1710;
    --rmd-surface: #12211a;
    --rmd-surface-2: #17291f;
    --rmd-border: rgba(110, 231, 160, .2);
    --rmd-border-strong: rgba(110, 231, 160, .4);
    --rmd-text: #eaf5ee;
    --rmd-text-soft: #b9cfc1;
    --rmd-text-muted: #8ba393;
    --rmd-shadow: 0 14px 34px -20px rgba(0, 0, 0, .85);
    --rmd-shadow-lg: 0 26px 60px -30px rgba(0, 0, 0, .95);
}

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

/* ---------------- 首屏 ---------------- */
.rmd-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.32fr) minmax(0, .98fr);
    gap: 34px;
    align-items: start;
    margin-bottom: 24px;
}

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

.rmd-hero-copy h1 {
    margin: 16px 0 12px;
    font-size: 38px;
    line-height: 1.2;
    font-weight: 900;
    letter-spacing: -.02em;
    color: var(--rmd-text);
}
.rmd-hero-copy h1::after {
    content: "";
    display: block;
    width: 76px;
    height: 4px;
    margin-top: 12px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--rmd-primary), var(--rmd-accent));
}

.rmd-lead {
    margin: 18px 0 18px;
    font-size: 16px;
    line-height: 1.95;
    color: var(--rmd-text-soft);
    max-width: 60ch;
}

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

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

/* ---------------- 方格纸样张 ---------------- */
.rmd-notebook {
    position: relative;
    padding: 24px 24px 18px;
    border-radius: var(--rmd-radius);
    background:
        linear-gradient(var(--rmd-grid) 1px, transparent 1px) 0 0 / 26px 26px,
        linear-gradient(90deg, var(--rmd-grid) 1px, transparent 1px) 0 0 / 26px 26px,
        var(--rmd-paper);
    border: 1px solid var(--rmd-border-strong);
    box-shadow: var(--rmd-shadow-lg);
    overflow: hidden;
}
.rmd-nb-corner {
    position: absolute;
    top: 12px;
    right: 14px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .08em;
    color: var(--rmd-accent);
    background: var(--rmd-accent-soft);
    border: 1px solid var(--rmd-border);
    border-radius: 999px;
    padding: 3px 10px;
}
.rmd-nb-long {
    margin: 14px 0 12px;
    font-family: var(--rmd-mono);
    font-size: 25px;
    line-height: 1.34;
    letter-spacing: .5px;
    color: var(--rmd-text);
    white-space: pre;
    overflow-x: auto;
}
.rmd-nb-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 10px;
    border-top: 1px dashed var(--rmd-border-strong);
}
.rmd-nb-meta span {
    display: inline-flex;
    align-items: baseline;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 7px;
    background: var(--rmd-surface);
    border: 1px solid var(--rmd-border);
    font-size: 12.5px;
}
.rmd-nb-meta i {
    font-style: normal;
    color: var(--rmd-text-muted);
}
.rmd-nb-meta b {
    font-family: var(--rmd-mono);
    font-size: 14px;
}
.rmd-nb-foot {
    margin-top: 10px;
    font-size: 12.5px;
    color: var(--rmd-text-soft);
}

/* ---------------- 操作台 ---------------- */
.rmd-desk {
    padding: 18px 20px;
    border-radius: var(--rmd-radius);
    background: var(--rmd-surface);
    border: 1px solid var(--rmd-border);
    box-shadow: var(--rmd-shadow);
    margin-bottom: 18px;
}
.rmd-desk-top {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: flex-end;
}
.rmd-field { display: flex; flex-direction: column; gap: 6px; min-width: 140px; }
.rmd-field--grow { flex: 1 1 190px; }
.rmd-field--op { min-width: 34px; justify-content: center; padding-bottom: 22px; }
.rmd-op {
    font-size: 24px;
    font-weight: 800;
    color: var(--rmd-accent);
    line-height: 1;
}
.rmd-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--rmd-text);
}
.rmd-input {
    width: 100%;
    padding: 9px 12px;
    font-size: 15px;
    font-family: inherit;
    color: var(--rmd-text);
    background: var(--rmd-surface-2);
    border: 1px solid var(--rmd-border-strong);
    border-radius: var(--rmd-radius-sm);
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}
.rmd-input:focus {
    border-color: var(--rmd-primary-2);
    box-shadow: 0 0 0 3px var(--rmd-primary-soft);
}
.rmd-input--num {
    font-family: var(--rmd-mono);
    font-size: 18px;
    font-weight: 700;
    text-align: center;
}
.rmd-textarea {
    font-family: var(--rmd-mono);
    font-size: 14px;
    line-height: 1.9;
    resize: vertical;
}
.rmd-hint {
    font-size: 12px;
    color: var(--rmd-text-muted);
    line-height: 1.6;
}
.rmd-desk-btns {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-left: auto;
}

.rmd-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 16px;
    font-size: 14px;
    font-weight: 700;
    font-family: inherit;
    color: var(--rmd-primary-deep);
    background: var(--rmd-primary-soft);
    border: 1px solid var(--rmd-border);
    border-radius: 999px;
    cursor: pointer;
    transition: transform .12s, box-shadow .15s, background .15s;
}
.rmd-btn:hover { transform: translateY(-1px); box-shadow: var(--rmd-shadow); }
.rmd-btn--primary {
    color: #fff;
    background: linear-gradient(135deg, var(--rmd-primary), var(--rmd-primary-2));
    border-color: transparent;
}
:root[data-theme="dark"] .rmd-btn--primary { color: #06210f; }
.rmd-btn--ghost {
    color: var(--rmd-text-soft);
    background: transparent;
}
.rmd-btn--sm { padding: 6px 12px; font-size: 13px; }
.rmd-btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.rmd-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px dashed var(--rmd-border);
}
.rmd-preset-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--rmd-text-muted);
}
.rmd-chip {
    padding: 5px 12px;
    font-size: 12.5px;
    font-weight: 600;
    font-family: inherit;
    color: var(--rmd-text-soft);
    background: var(--rmd-surface-2);
    border: 1px solid var(--rmd-border);
    border-radius: 999px;
    cursor: pointer;
    transition: background .15s, color .15s;
}
.rmd-chip:hover {
    color: var(--rmd-primary-deep);
    background: var(--rmd-primary-soft);
}

/* ---------------- 提示条 ---------------- */
.rmd-errbar {
    margin: 0 0 18px;
    padding: 11px 16px;
    border-radius: var(--rmd-radius-sm);
    font-size: 14px;
    font-weight: 600;
    color: var(--rmd-accent-deep);
    background: var(--rmd-accent-soft);
    border: 1px solid rgba(194, 65, 12, .32);
}
:root[data-theme="dark"] .rmd-errbar { color: var(--rmd-accent-2); }

/* ---------------- 结果卡 ---------------- */
.rmd-verdict {
    display: grid;
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    gap: 18px;
    margin-bottom: 20px;
}
.rmd-verdict-main {
    padding: 20px 22px;
    border-radius: var(--rmd-radius);
    background: linear-gradient(140deg, var(--rmd-primary), var(--rmd-primary-deep));
    color: #eaf5ee;
    box-shadow: var(--rmd-shadow-lg);
}
:root[data-theme="dark"] .rmd-verdict-main {
    background: linear-gradient(140deg, #173d28, #0d2417);
    border: 1px solid var(--rmd-border-strong);
}
.rmd-verdict-label {
    font-size: 12.5px;
    font-weight: 700;
    letter-spacing: .06em;
    color: rgba(234, 245, 238, .72);
}
.rmd-verdict-eq {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin: 8px 0 6px;
}
.rmd-verdict-eq b {
    font-family: var(--rmd-mono);
    font-size: 44px;
    line-height: 1.1;
    font-weight: 800;
    color: #fff;
}
.rmd-verdict-eq .rmd-rem {
    color: var(--rmd-accent-2);
}
:root[data-theme="dark"] .rmd-verdict-eq .rmd-rem { color: var(--rmd-accent-2); }
.rmd-eq-word {
    font-size: 16px;
    font-weight: 700;
    color: rgba(234, 245, 238, .78);
}
.rmd-verdict-sub {
    font-size: 13.5px;
    line-height: 1.75;
    color: rgba(234, 245, 238, .82);
}

.rmd-scene-card {
    padding: 18px 20px;
    border-radius: var(--rmd-radius);
    background: var(--rmd-surface);
    border: 1px solid var(--rmd-border);
    border-top: 3px solid var(--rmd-accent);
    box-shadow: var(--rmd-shadow);
}
.rmd-scene-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
}
.rmd-scene-name {
    font-size: 15.5px;
    font-weight: 800;
    color: var(--rmd-text);
}
.rmd-scene-mode {
    font-size: 12px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 999px;
    color: var(--rmd-accent-deep);
    background: var(--rmd-accent-soft);
    border: 1px solid rgba(194, 65, 12, .26);
}
:root[data-theme="dark"] .rmd-scene-mode { color: var(--rmd-accent-2); }
.rmd-scene-q {
    margin: 0 0 10px;
    font-size: 13.5px;
    line-height: 1.8;
    color: var(--rmd-text-soft);
}
.rmd-scene-res {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.rmd-scene-line {
    flex: 1 1 150px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--rmd-radius-sm);
    background: var(--rmd-surface-2);
    border: 1px solid var(--rmd-border);
    font-size: 13px;
    color: var(--rmd-text-soft);
}
.rmd-scene-line b {
    font-family: var(--rmd-mono);
    font-size: 18px;
    color: var(--rmd-primary);
}
.rmd-scene-tip {
    margin: 10px 0 0;
    font-size: 12.5px;
    line-height: 1.7;
    color: var(--rmd-text-muted);
}

/* ---------------- 演算台 ---------------- */
.rmd-workbench {
    display: grid;
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    gap: 18px;
    margin-bottom: 20px;
}
.rmd-wb-col {
    padding: 18px 20px;
    border-radius: var(--rmd-radius);
    background: var(--rmd-surface);
    border: 1px solid var(--rmd-border);
    box-shadow: var(--rmd-shadow);
}
.rmd-wb-head { margin-bottom: 12px; }
.rmd-wb-title {
    margin: 0 0 4px;
    font-size: 19px;
    font-weight: 800;
    color: var(--rmd-text);
    display: flex;
    align-items: center;
    gap: 8px;
}
.rmd-wb-desc {
    margin: 0;
    font-size: 13px;
    line-height: 1.75;
    color: var(--rmd-text-muted);
}

.rmd-grid-paper {
    position: relative;
    padding: 22px 18px;
    border-radius: var(--rmd-radius-sm);
    background:
        linear-gradient(var(--rmd-grid) 1px, transparent 1px) 0 0 / 26px 26px,
        linear-gradient(90deg, var(--rmd-grid) 1px, transparent 1px) 0 0 / 26px 26px,
        var(--rmd-paper);
    border: 1px solid var(--rmd-border-strong);
    box-shadow: inset 0 0 30px rgba(20, 83, 45, .06);
    overflow-x: auto;
}
.rmd-long {
    margin: 0;
    font-family: var(--rmd-mono);
    font-size: 27px;
    line-height: 1.34;
    letter-spacing: .5px;
    color: var(--rmd-text);
    white-space: pre;
}
.rmd-long-caption {
    margin-top: 10px;
    font-family: var(--rmd-mono);
    font-size: 13.5px;
    font-weight: 700;
    color: var(--rmd-accent);
}
:root[data-theme="dark"] .rmd-long-caption { color: var(--rmd-accent-2); }

.rmd-steps-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.rmd-step {
    padding: 12px 14px;
    border-radius: var(--rmd-radius-sm);
    background: var(--rmd-surface-2);
    border: 1px solid var(--rmd-border);
    border-left: 3px solid var(--rmd-primary);
}
.rmd-step-head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}
.rmd-step-no {
    font-family: var(--rmd-mono);
    font-size: 11.5px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 999px;
    color: var(--rmd-primary-deep);
    background: var(--rmd-primary-soft);
}
.rmd-step-title {
    font-size: 14.5px;
    font-weight: 800;
    color: var(--rmd-text);
}
.rmd-step-body {
    margin: 0;
    font-size: 13.5px;
    line-height: 1.8;
    color: var(--rmd-text-soft);
}
.rmd-step-body em {
    font-style: normal;
    font-family: var(--rmd-mono);
    font-weight: 700;
    color: var(--rmd-accent);
}
:root[data-theme="dark"] .rmd-step-body em { color: var(--rmd-accent-2); }
.rmd-step-four {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 10px;
}
.rmd-four {
    padding: 7px 8px;
    border-radius: 8px;
    text-align: center;
    background: var(--rmd-surface);
    border: 1px dashed var(--rmd-border-strong);
}
.rmd-four span {
    display: block;
    font-size: 11.5px;
    font-weight: 700;
    color: var(--rmd-text-muted);
}
.rmd-four b {
    display: block;
    font-family: var(--rmd-mono);
    font-size: 15px;
    color: var(--rmd-primary);
}

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

/* ---------------- 校验器 ---------------- */
.rmd-check-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-end;
}
.rmd-check-grid .rmd-field { min-width: 120px; }
.rmd-check-out {
    margin-top: 14px;
    padding: 12px 16px;
    border-radius: var(--rmd-radius-sm);
    font-size: 13.5px;
    line-height: 1.8;
    color: var(--rmd-text-soft);
    background: var(--rmd-surface-2);
    border: 1px solid var(--rmd-border);
}
.rmd-check-out.is-ok {
    color: var(--rmd-primary-deep);
    background: var(--rmd-primary-soft);
    border-color: var(--rmd-primary-2);
}
.rmd-check-out.is-bad {
    color: var(--rmd-accent-deep);
    background: var(--rmd-accent-soft);
    border-color: var(--rmd-accent-2);
}
:root[data-theme="dark"] .rmd-check-out.is-ok { color: var(--rmd-primary-2); }
:root[data-theme="dark"] .rmd-check-out.is-bad { color: var(--rmd-accent-2); }

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

.rmd-notes {
    width: 100%;
    min-width: 520px;
    border-collapse: collapse;
    font-size: 13.5px;
}
.rmd-notes th,
.rmd-notes td {
    padding: 11px 14px;
    border-bottom: 1px solid var(--rmd-border);
    vertical-align: top;
    text-align: left;
    line-height: 1.8;
}
.rmd-notes tbody tr:last-child th,
.rmd-notes tbody tr:last-child td { border-bottom: none; }
.rmd-notes th {
    width: 118px;
    font-size: 13px;
    font-weight: 700;
    color: var(--rmd-primary-deep);
    background: var(--rmd-primary-soft);
    white-space: nowrap;
}
:root[data-theme="dark"] .rmd-notes th { color: var(--rmd-primary-2); }
.rmd-notes td { color: var(--rmd-text-soft); }

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

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

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

.rmd-panel {
    display: none;
    padding: 22px 24px;
    border-radius: var(--rmd-radius);
    background: var(--rmd-surface);
    border: 1px solid var(--rmd-border);
    box-shadow: var(--rmd-shadow);
}
.rmd-panel.on { display: block; }
.rmd-panel h2 {
    margin: 20px 0 8px;
    font-size: 17px;
    font-weight: 800;
    color: var(--rmd-text);
}
.rmd-panel h2:first-child { margin-top: 0; }
.rmd-panel p,
.rmd-panel li {
    font-size: 14.5px;
    line-height: 1.95;
    color: var(--rmd-text-soft);
}
.rmd-panel ol,
.rmd-panel ul { margin: 0 0 12px; padding-left: 22px; }

.rmd-timeline { list-style: none; padding: 0; margin: 0; }
.rmd-timeline li {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 14px 16px;
    border-radius: var(--rmd-radius-sm);
    background: var(--rmd-surface-2);
    border: 1px solid var(--rmd-border);
    border-left: 3px solid var(--rmd-accent);
    margin-bottom: 10px;
}
.rmd-timeline .ver {
    font-family: var(--rmd-mono);
    font-size: 13px;
    font-weight: 800;
    color: var(--rmd-accent);
}
.rmd-timeline .date {
    font-size: 12.5px;
    color: var(--rmd-text-muted);
}
.rmd-timeline .txt { flex: 1 1 100%; font-size: 13.5px; line-height: 1.85; }

.rmd-faq details {
    border: 1px solid var(--rmd-border);
    border-radius: var(--rmd-radius-sm);
    background: var(--rmd-surface-2);
    margin-bottom: 8px;
    overflow: hidden;
}
.rmd-faq summary {
    padding: 12px 16px;
    font-size: 14.5px;
    font-weight: 700;
    color: var(--rmd-text);
    cursor: pointer;
    background: var(--rmd-surface);
}
.rmd-faq .a {
    padding: 12px 16px;
    font-size: 13.5px;
    line-height: 1.9;
    color: var(--rmd-text-soft);
    border-top: 1px dashed var(--rmd-border);
}

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

/* ---------------- 弹窗 / 提示 ---------------- */
.rmd-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
/* 弹窗在 .rmd-page 之外，需单独兜底 hidden，避免遮罩拦截整页点击 */
.rmd-modal[hidden] { display: none !important; }
.rmd-modal-mask {
    position: absolute;
    inset: 0;
    background: rgba(8, 26, 16, .58);
    backdrop-filter: blur(2px);
}
.rmd-modal-box {
    position: relative;
    width: min(680px, 100%);
    max-height: 84vh;
    display: flex;
    flex-direction: column;
    border-radius: var(--rmd-radius);
    background: var(--rmd-surface);
    border: 1px solid var(--rmd-border-strong);
    box-shadow: var(--rmd-shadow-lg);
    overflow: hidden;
}
.rmd-modal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 18px;
    background: var(--rmd-primary-soft);
    border-bottom: 1px solid var(--rmd-border);
}
.rmd-modal-head h3 {
    margin: 0;
    font-size: 16.5px;
    font-weight: 800;
    color: var(--rmd-primary-deep);
}
:root[data-theme="dark"] .rmd-modal-head h3 { color: var(--rmd-primary-2); }
.rmd-modal-x {
    width: 30px;
    height: 30px;
    font-size: 15px;
    color: var(--rmd-text-soft);
    background: transparent;
    border: 1px solid var(--rmd-border);
    border-radius: 50%;
    cursor: pointer;
}
.rmd-modal-body {
    padding: 18px 20px;
    overflow: auto;
}
.rmd-modal-body p {
    margin: 0 0 10px;
    font-size: 14px;
    line-height: 1.9;
    color: var(--rmd-text-soft);
}
.rmd-modal-body b { color: var(--rmd-primary); font-weight: 700; }
.rmd-modal-body .rmd-pre {
    background: var(--rmd-surface-2);
    border-color: var(--rmd-border);
    color: var(--rmd-text);
}
.rmd-modal-foot {
    padding: 12px 18px;
    border-top: 1px solid var(--rmd-border);
    text-align: right;
}

.rmd-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(--rmd-primary), var(--rmd-primary-deep));
    box-shadow: var(--rmd-shadow-lg);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s, transform .2s;
}
.rmd-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

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

@media print {
    body * { visibility: hidden !important; }
    .rmd-sheet, .rmd-sheet * { visibility: visible !important; }
    .rmd-sheet {
        display: block !important;
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        padding: 12mm 14mm;
        color: #000;
        background: #fff;
    }
    .rmd-sheet-title {
        font-size: 18pt;
        font-weight: 800;
        margin: 0 0 4pt;
    }
    .rmd-sheet-sub {
        font-size: 10pt;
        color: #444;
        margin: 0 0 10pt;
    }
    .rmd-sheet-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 8mm;
    }
    .rmd-sheet-item {
        border: 1px solid #999;
        border-radius: 6pt;
        padding: 4mm 5mm 6mm;
        page-break-inside: avoid;
    }
    .rmd-sheet-q {
        font-family: var(--rmd-mono);
        font-size: 12pt;
        font-weight: 700;
        margin: 0 0 3mm;
    }
    .rmd-sheet-box {
        height: 26mm;
        border: 1px dashed #bbb;
        border-radius: 4pt;
        background:
            linear-gradient(rgba(0, 0, 0, .08) 1px, transparent 1px) 0 0 / 6mm 6mm,
            linear-gradient(90deg, rgba(0, 0, 0, .08) 1px, transparent 1px) 0 0 / 6mm 6mm;
    }
    .rmd-sheet-foot {
        margin-top: 8pt;
        font-size: 9pt;
        color: #555;
    }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1080px) {
    .rmd-hero { grid-template-columns: minmax(0, 1fr); }
    .rmd-verdict { grid-template-columns: minmax(0, 1fr); }
    .rmd-workbench { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 760px) {
    .rmd-hero-copy h1 { font-size: 30px; }
    .rmd-steps { grid-template-columns: minmax(0, 1fr); }
    .rmd-desk-top { gap: 10px; }
    .rmd-field { min-width: 100%; }
    .rmd-field--op { display: none; }
    .rmd-desk-btns { margin-left: 0; width: 100%; }
    .rmd-btn { flex: 1 1 auto; justify-content: center; }
    .rmd-nb-long { font-size: 20px; }
    .rmd-long { font-size: 21px; }
    .rmd-step-four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .rmd-verdict-eq b { font-size: 34px; }
    .rmd-panel { padding: 18px 16px; }
    .rmd-card, .rmd-wb-col { padding: 16px 14px; }
    .rmd-notes { min-width: 460px; }
}