/* ============================================================
   音序查字法与部首查字法练习（dictionary-lookup-drill）
   主题：绛紫 #8e1f5a + 淡金 #c8961e + 字典纸米色（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 */
.dld-page,
.dld-modal,
.dld-sheet,
.dld-toast {
    --dld-primary: #8e1f5a;
    --dld-primary-2: #b23a76;
    --dld-primary-deep: #5f1239;
    --dld-gold: #b8860b;
    --dld-gold-2: #d9a520;
    --dld-paper: #fbf6ec;
    --dld-paper-2: #f4ead8;
    --dld-ink: #2c2118;
    --dld-primary-soft: #f8e8f0;
    --dld-gold-soft: #fdf3d9;
    --dld-bg: #f7f2ea;
    --dld-surface: #ffffff;
    --dld-surface-2: #fbf7f1;
    --dld-border: rgba(142, 31, 90, .16);
    --dld-border-strong: rgba(142, 31, 90, .32);
    --dld-text: #2b1f28;
    --dld-text-soft: #5e4c58;
    --dld-text-muted: #8d7b86;
    --dld-shadow: 0 14px 34px -20px rgba(60, 20, 40, .38);
    --dld-shadow-lg: 0 26px 60px -30px rgba(60, 20, 40, .5);
    --dld-radius: 18px;
    --dld-radius-sm: 11px;
    color: var(--dld-text);
    font-size: 15px;
    line-height: 1.78;
}

:root[data-theme="dark"] .dld-page,
:root[data-theme="dark"] .dld-modal,
:root[data-theme="dark"] .dld-sheet,
:root[data-theme="dark"] .dld-toast {
    --dld-primary: #e287b4;
    --dld-primary-2: #f0a3c6;
    --dld-primary-deep: #8e1f5a;
    --dld-gold: #e7b53f;
    --dld-gold-2: #f5cf6b;
    --dld-paper: #1a1418;
    --dld-paper-2: #241c21;
    --dld-ink: #f0e6dc;
    --dld-primary-soft: rgba(226, 135, 180, .14);
    --dld-gold-soft: rgba(231, 181, 63, .14);
    --dld-bg: #120e12;
    --dld-surface: #1b1519;
    --dld-surface-2: #221a20;
    --dld-border: rgba(226, 135, 180, .2);
    --dld-border-strong: rgba(226, 135, 180, .38);
    --dld-text: #f2e8ee;
    --dld-text-soft: #c9b4c0;
    --dld-text-muted: #9a8592;
    --dld-shadow: 0 14px 34px -20px rgba(0, 0, 0, .85);
    --dld-shadow-lg: 0 26px 60px -30px rgba(0, 0, 0, .95);
}

.dld-page *,
.dld-page *::before,
.dld-page *::after { box-sizing: border-box; }
.dld-page [hidden] { display: none !important; }
.dld-page b { font-weight: 700; color: var(--dld-primary); }
:root[data-theme="dark"] .dld-page b { color: var(--dld-primary-2); }

/* ---------------- 首屏 ---------------- */
.dld-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.36fr) minmax(0, .95fr);
    gap: 36px;
    align-items: start;
    margin-bottom: 26px;
}

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

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

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

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

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

/* ---------------- 字典纸样张 ---------------- */
.dld-sheet-preview {
    position: relative;
    padding: 26px 26px 20px;
    border-radius: var(--dld-radius);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, .5), transparent 40%),
        var(--dld-paper);
    border: 1px solid var(--dld-border);
    box-shadow: var(--dld-shadow-lg);
    overflow: hidden;
}
.dld-sheet-preview::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 96px;
    height: 1px;
    background: repeating-linear-gradient(90deg, var(--dld-primary) 0 22px, transparent 22px 30px);
    opacity: .3;
}
.dld-preview-corner {
    font-size: 11px;
    letter-spacing: .14em;
    color: var(--dld-gold);
    font-weight: 700;
    text-transform: uppercase;
}
.dld-preview-char {
    margin-top: 10px;
    font-size: 108px;
    line-height: 1.1;
    font-weight: 700;
    color: var(--dld-ink);
    text-align: center;
    font-family: "Kaiti SC", "STKaiti", "KaiTi", "Microsoft YaHei", serif;
}
.dld-preview-py {
    text-align: center;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: .04em;
    color: var(--dld-primary);
    margin-bottom: 16px;
}
.dld-preview-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    text-align: center;
}
.dld-preview-meta span {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 8px 4px;
    border-radius: 10px;
    background: rgba(255, 255, 255, .6);
    border: 1px solid var(--dld-border);
}
:root[data-theme="dark"] .dld-preview-meta span { background: rgba(255, 255, 255, .04); }
.dld-preview-meta i {
    font-style: normal;
    font-size: 11px;
    color: var(--dld-text-muted);
}
.dld-preview-meta b { font-size: 17px; color: var(--dld-ink); }
.dld-preview-foot {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px dashed var(--dld-border-strong);
    font-size: 13px;
    line-height: 1.7;
    color: var(--dld-text-soft);
    font-weight: 600;
}

/* ---------------- 操作台 ---------------- */
.dld-desk {
    border-radius: var(--dld-radius);
    background: var(--dld-surface);
    border: 1px solid var(--dld-border);
    box-shadow: var(--dld-shadow);
    overflow: hidden;
    margin-bottom: 18px;
}
.dld-desk-top {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(0, .9fr) auto;
    gap: 16px;
    align-items: end;
    padding: 20px 22px;
}
.dld-field { min-width: 0; }
.dld-field--grow { min-width: 0; }
.dld-label {
    display: flex;
    align-items: baseline;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--dld-text);
    margin-bottom: 6px;
}
.dld-label span { font-size: 11.5px; font-weight: 500; color: var(--dld-text-muted); }
.dld-input {
    width: 100%;
    border: 1px solid var(--dld-border-strong);
    border-radius: var(--dld-radius-sm);
    padding: 10px 13px;
    font-size: 15px;
    font-family: inherit;
    color: var(--dld-text);
    background: var(--dld-surface-2);
    outline: none;
    transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}
.dld-input:focus {
    background: var(--dld-surface);
    border-color: var(--dld-primary);
    box-shadow: 0 0 0 4px var(--dld-primary-soft);
}
.dld-input--char {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: .08em;
    padding: 8px 13px;
    font-family: "Kaiti SC", "STKaiti", "KaiTi", "Microsoft YaHei", serif;
}
.dld-hint {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    line-height: 1.65;
    color: var(--dld-text-muted);
}
.dld-desk-btns { display: flex; flex-wrap: wrap; gap: 10px; }

.dld-presets {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    padding: 14px 22px 18px;
    background: var(--dld-surface-2);
    border-top: 1px solid var(--dld-border);
}
.dld-preset-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--dld-text-muted);
    letter-spacing: .04em;
    margin-right: 4px;
}
.dld-chip {
    appearance: none;
    cursor: pointer;
    border: 1px solid var(--dld-border-strong);
    background: var(--dld-surface);
    color: var(--dld-text-soft);
    border-radius: 8px;
    padding: 5px 13px;
    font-size: 14px;
    font-weight: 700;
    font-family: "Kaiti SC", "STKaiti", "KaiTi", "Microsoft YaHei", serif;
    transition: all .16s ease;
}
.dld-chip:hover {
    color: var(--dld-primary);
    border-color: var(--dld-primary);
    background: var(--dld-primary-soft);
    transform: translateY(-1px);
}

/* ---------------- 按钮 ---------------- */
.dld-btn {
    appearance: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    font-weight: 700;
    color: var(--dld-text);
    background: var(--dld-surface);
    border: 1px solid var(--dld-border-strong);
    border-radius: 10px;
    padding: 10px 18px;
    transition: transform .14s ease, box-shadow .2s ease, background .18s ease, border-color .18s ease;
}
.dld-btn:hover { transform: translateY(-1px); border-color: var(--dld-primary); color: var(--dld-primary); }
.dld-btn--primary {
    color: #fff;
    border-color: transparent;
    background: linear-gradient(135deg, var(--dld-primary), var(--dld-primary-2));
    box-shadow: 0 8px 20px -8px var(--dld-primary);
}
.dld-btn--primary:hover { color: #fff; box-shadow: 0 12px 26px -10px var(--dld-primary); }
.dld-btn--gold {
    color: #3a2a05;
    border-color: transparent;
    background: linear-gradient(135deg, var(--dld-gold), var(--dld-gold-2));
}
.dld-btn--ghost { background: transparent; color: var(--dld-text-soft); }
.dld-btn--sm { padding: 8px 14px; font-size: 13px; }
.dld-btn-row { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------------- 校验条 ---------------- */
.dld-errbar {
    margin: 0 0 18px;
    padding: 12px 16px;
    border-radius: var(--dld-radius-sm);
    font-size: 13.5px;
    font-weight: 600;
    color: #8a1c4a;
    background: #fdf0f6;
    border: 1px solid #f0bcd6;
}
:root[data-theme="dark"] .dld-errbar {
    color: #f0a3c6;
    background: rgba(226, 135, 180, .12);
    border-color: rgba(226, 135, 180, .4);
}
.dld-errbar.is-warn { color: #7a5a06; background: #fffbeb; border-color: #f5d98a; }
:root[data-theme="dark"] .dld-errbar.is-warn { color: #e7b53f; background: rgba(231, 181, 63, .12); border-color: rgba(231, 181, 63, .38); }

/* ---------------- AI 查字 ---------------- */
.dld-ai-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin: -8px 0 18px;
    padding: 12px 16px;
    border-radius: var(--dld-radius-sm);
    background: linear-gradient(135deg, rgba(142, 31, 90, .07), rgba(184, 134, 11, .09));
    border: 1px dashed var(--dld-border-strong);
}
:root[data-theme="dark"] .dld-ai-bar {
    background: linear-gradient(135deg, rgba(226, 135, 180, .1), rgba(231, 181, 63, .1));
}
.dld-ai-msg {
    flex: 1 1 240px;
    font-size: 13.5px;
    line-height: 1.75;
    color: var(--dld-text-soft);
}
.dld-ai-status {
    font-size: 12.5px;
    line-height: 1.7;
    color: var(--dld-text-muted);
    flex: 1 1 200px;
}
.dld-btn--ai {
    color: #fff;
    background: linear-gradient(135deg, var(--dld-primary), #6d28d9);
    border-color: transparent;
}
.dld-btn--ai:hover { color: #fff; }
:root[data-theme="dark"] .dld-btn--ai {
    background: linear-gradient(135deg, var(--dld-primary), #8b5cf6);
    color: #1b1017;
}
.dld-btn--ai:disabled {
    opacity: .68;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}
.dld-btn--sm.dld-btn--ai { padding: 6px 12px; font-size: 13px; }

/* ---------------- 双页对照 ---------------- */
.dld-duo-page {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;
    border-radius: var(--dld-radius);
    background: var(--dld-surface);
    border: 1px solid var(--dld-border);
    box-shadow: var(--dld-shadow);
    overflow: hidden;
    margin-bottom: 18px;
    position: relative;
}
.dld-duo-page::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 1px;
    background: repeating-linear-gradient(180deg, var(--dld-border-strong) 0 8px, transparent 8px 16px);
    transform: translateX(-50%);
    opacity: .6;
    pointer-events: none;
}
.dld-col-head {
    padding: 18px 22px 12px;
    background: linear-gradient(180deg, var(--dld-primary-soft), transparent);
    border-bottom: 1px solid var(--dld-border);
}
.dld-col-head--bu { background: linear-gradient(180deg, var(--dld-gold-soft), transparent); }
.dld-col-title {
    display: flex;
    align-items: center;
    gap: 9px;
    margin: 0 0 6px;
    font-size: 18px;
    font-weight: 800;
    color: var(--dld-text);
}
.dld-ic {
    display: inline-grid;
    place-items: center;
    width: 30px;
    height: 30px;
    border-radius: 9px;
    font-size: 15px;
    background: var(--dld-primary-soft);
    flex-shrink: 0;
}
.dld-col-head--bu .dld-ic { background: var(--dld-gold-soft); }
.dld-col-desc {
    margin: 0;
    font-size: 13px;
    line-height: 1.8;
    color: var(--dld-text-soft);
}
.dld-pane { padding: 18px 22px 22px; min-width: 0; }
.dld-pane.is-top { box-shadow: inset 0 0 0 2px var(--dld-primary); }

/* 音序字母表 */
.dld-alpha {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 10px 12px;
    margin-bottom: 16px;
    border-radius: var(--dld-radius-sm);
    background: var(--dld-surface-2);
    border: 1px solid var(--dld-border);
}
.dld-alpha span {
    min-width: 21px;
    padding: 3px 4px;
    text-align: center;
    font-size: 12px;
    font-weight: 700;
    border-radius: 5px;
    color: var(--dld-text-muted);
}
.dld-alpha span.is-hit {
    color: #fff;
    background: var(--dld-primary);
    box-shadow: 0 4px 10px -4px var(--dld-primary);
}
.dld-alpha span.is-dim { opacity: .35; }

/* 部首雷达 */
.dld-radar {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px 14px;
    margin-bottom: 16px;
    border-radius: var(--dld-radius-sm);
    background: var(--dld-surface-2);
    border: 1px solid var(--dld-border);
}
.dld-radar-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font-size: 13px;
}
.dld-radar-row .k { color: var(--dld-text-muted); }
.dld-radar-row .v { font-weight: 700; color: var(--dld-text); text-align: right; }
.dld-radar-row.is-hit { color: var(--dld-gold); }
.dld-radar-row.is-hit .v { color: var(--dld-gold); font-size: 16px; }
.dld-radar-row .v b { color: inherit; }

/* 步骤列表 */
.dld-steps-list {
    list-style: none;
    margin: 0;
    padding: 0;
    counter-reset: dldstep;
}
.dld-steps-list li {
    position: relative;
    counter-increment: dldstep;
    padding: 12px 14px 12px 46px;
    margin-bottom: 10px;
    border-radius: var(--dld-radius-sm);
    background: var(--dld-surface-2);
    border: 1px solid var(--dld-border);
    transition: border-color .18s ease, transform .18s ease;
}
.dld-steps-list li:last-child { margin-bottom: 0; }
.dld-steps-list li:hover { border-color: var(--dld-border-strong); transform: translateX(2px); }
.dld-steps-list li::before {
    content: counter(dldstep);
    position: absolute;
    left: 12px;
    top: 12px;
    width: 24px;
    height: 24px;
    border-radius: 8px;
    display: grid;
    place-items: center;
    font-size: 12px;
    font-weight: 800;
    color: #fff;
    background: var(--dld-primary);
}
.dld-pane--bu .dld-steps-list li::before,
#dldPaneBu .dld-steps-list li::before { background: var(--dld-gold); color: #3a2a05; }
.dld-steps-list .st-t {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: var(--dld-text);
    margin-bottom: 3px;
}
.dld-steps-list .st-d {
    display: block;
    font-size: 13px;
    line-height: 1.85;
    color: var(--dld-text-soft);
}
.dld-steps-list .st-d code {
    font-size: 12.5px;
    padding: 1px 6px;
    border-radius: 5px;
    background: var(--dld-surface);
    border: 1px solid var(--dld-border);
    color: var(--dld-primary);
}
.dld-steps-list .st-key {
    display: inline-block;
    margin-top: 6px;
    font-size: 12px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 999px;
    background: var(--dld-gold-soft);
    color: var(--dld-gold);
}

/* ---------------- 判断卡 ---------------- */
.dld-verdict {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 24px;
    align-items: center;
    padding: 26px 28px;
    border-radius: var(--dld-radius);
    margin-bottom: 18px;
    color: #fbeef5;
    background:
        radial-gradient(85% 130% at 100% 0%, rgba(184, 134, 11, .3), transparent 58%),
        linear-gradient(135deg, #4d1030, #8e1f5a 62%, #a32a68);
    box-shadow: var(--dld-shadow-lg);
}
:root[data-theme="dark"] .dld-verdict {
    background:
        radial-gradient(85% 130% at 100% 0%, rgba(231, 181, 63, .22), transparent 58%),
        linear-gradient(135deg, #2c0a1b, #5b1239 62%, #6d1746);
    border: 1px solid rgba(226, 135, 180, .28);
}
.dld-verdict-label {
    font-size: 12px;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, .72);
    margin-bottom: 6px;
}
.dld-verdict-value {
    font-size: 32px;
    font-weight: 900;
    line-height: 1.25;
    color: #fff;
    letter-spacing: -.01em;
}
.dld-verdict-value em {
    font-style: normal;
    color: #ffdf9e;
}
.dld-verdict-why {
    margin-top: 10px;
    font-size: 13.5px;
    line-height: 1.9;
    color: rgba(255, 255, 255, .84);
}
.dld-fact {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 10px;
}
.dld-fact-item {
    padding: 10px 12px;
    border-radius: 10px;
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .16);
}
.dld-fact-item .k {
    display: block;
    font-size: 11px;
    color: rgba(255, 255, 255, .72);
    margin-bottom: 2px;
}
.dld-fact-item .v {
    font-size: 16px;
    font-weight: 800;
    color: #fff;
    word-break: break-all;
}

/* ---------------- 卡片 ---------------- */
.dld-duo {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 18px;
}
.dld-card {
    padding: 22px 24px;
    border-radius: var(--dld-radius);
    background: var(--dld-surface);
    border: 1px solid var(--dld-border);
    box-shadow: var(--dld-shadow);
    min-width: 0;
    margin-bottom: 18px;
}
.dld-duo .dld-card { margin-bottom: 0; }
.dld-card-head { margin-bottom: 14px; }
.dld-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(--dld-text);
}
.dld-card-desc {
    margin: 0;
    font-size: 13.5px;
    line-height: 1.85;
    color: var(--dld-text-soft);
}
.dld-card-desc code {
    font-size: 12.5px;
    padding: 1px 6px;
    border-radius: 5px;
    background: var(--dld-surface-2);
    border: 1px solid var(--dld-border);
    color: var(--dld-primary);
}
.dld-grid2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

/* ---------------- 表格 ---------------- */
.dld-table-wrap {
    margin-top: 14px;
    overflow-x: auto;
    border-radius: var(--dld-radius-sm);
    border: 1px solid var(--dld-border);
}
.dld-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
    min-width: 520px;
}
.dld-table th,
.dld-table td {
    padding: 9px 12px;
    text-align: left;
    border-bottom: 1px solid var(--dld-border);
    white-space: nowrap;
}
.dld-table thead th {
    font-size: 12px;
    font-weight: 700;
    color: var(--dld-text-muted);
    background: var(--dld-surface-2);
    letter-spacing: .03em;
}
.dld-table tbody tr:last-child td { border-bottom: none; }
.dld-table tbody tr:hover td { background: var(--dld-surface-2); }
.dld-table .t-char {
    font-size: 19px;
    font-weight: 700;
    color: var(--dld-primary);
    font-family: "Kaiti SC", "STKaiti", "KaiTi", "Microsoft YaHei", serif;
}
.dld-table .t-py { font-weight: 700; color: var(--dld-text); }
.dld-table .t-dim { color: var(--dld-text-muted); }
.dld-table .t-key {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 12.5px;
    color: var(--dld-gold);
    font-weight: 700;
}
.dld-table .empty {
    text-align: center;
    color: var(--dld-text-muted);
    padding: 26px 12px;
    white-space: normal;
}

/* ---------------- 自填字条 ---------------- */
.dld-self-list {
    margin-top: 14px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.dld-self-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px 6px 12px;
    border-radius: 999px;
    font-size: 13px;
    background: var(--dld-surface-2);
    border: 1px solid var(--dld-border);
}
.dld-self-item b {
    font-size: 17px;
    color: var(--dld-primary);
    font-family: "Kaiti SC", "STKaiti", "KaiTi", "Microsoft YaHei", serif;
}
.dld-self-item small { color: var(--dld-text-muted); }
.dld-self-item button {
    appearance: none;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--dld-text-muted);
    font-size: 15px;
    line-height: 1;
    padding: 2px 4px;
    border-radius: 6px;
}
.dld-self-item button:hover { color: #d33b5c; background: rgba(211, 59, 92, .12); }
.dld-self-empty {
    font-size: 12.5px;
    color: var(--dld-text-muted);
    padding: 10px 0;
}

/* ---------------- 自测 ---------------- */
.dld-quiz {
    border-radius: var(--dld-radius-sm);
    background: var(--dld-surface-2);
    border: 1px solid var(--dld-border);
    padding: 18px;
    min-height: 190px;
}
.dld-quiz-empty {
    text-align: center;
    color: var(--dld-text-muted);
    font-size: 13.5px;
    padding: 60px 10px;
}
.dld-quiz-clue {
    font-size: 15px;
    line-height: 1.9;
    color: var(--dld-text);
    margin-bottom: 14px;
}
.dld-quiz-clue b {
    font-size: 26px;
    color: var(--dld-primary);
    font-family: "Kaiti SC", "STKaiti", "KaiTi", "Microsoft YaHei", serif;
}
.dld-quiz-opts { display: flex; gap: 10px; flex-wrap: wrap; }
.dld-opt {
    appearance: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 13.5px;
    font-weight: 700;
    padding: 11px 16px;
    border-radius: 10px;
    color: var(--dld-text);
    background: var(--dld-surface);
    border: 1px solid var(--dld-border-strong);
    transition: all .16s ease;
}
.dld-opt:hover { border-color: var(--dld-primary); color: var(--dld-primary); transform: translateY(-1px); }
.dld-opt.is-right {
    color: #fff;
    background: linear-gradient(135deg, #15803d, #22c55e);
    border-color: transparent;
}
.dld-opt.is-wrong {
    color: #fff;
    background: linear-gradient(135deg, #b91c1c, #ef4444);
    border-color: transparent;
}
.dld-opt.is-dim { opacity: .5; }
.dld-quiz-feedback {
    margin-top: 14px;
    font-size: 13px;
    line-height: 1.85;
    color: var(--dld-text-soft);
    min-height: 24px;
}
.dld-quiz-feedback b { color: var(--dld-primary); }
.dld-quiz-score {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px dashed var(--dld-border);
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--dld-text-muted);
}
.dld-quiz-score b { font-size: 16px; color: var(--dld-primary); }

/* ---------------- 口径表 ---------------- */
.dld-notes {
    width: 100%;
    min-width: 460px;
    border-collapse: collapse;
    font-size: 13.5px;
}
.dld-notes th,
.dld-notes td {
    padding: 11px 14px;
    border: 1px solid var(--dld-border);
    text-align: left;
    vertical-align: top;
    line-height: 1.85;
}
.dld-notes th {
    width: 132px;
    background: var(--dld-surface-2);
    font-weight: 700;
    color: var(--dld-text);
    white-space: nowrap;
}
.dld-notes td { color: var(--dld-text-soft); }
.dld-notes code {
    font-size: 12.5px;
    padding: 1px 6px;
    border-radius: 5px;
    background: var(--dld-primary-soft);
    color: var(--dld-primary);
    white-space: nowrap;
}

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

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

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

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

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

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

/* ---------------- CSV 预览 ---------------- */
.dld-pre {
    margin: 14px 0 0;
    padding: 14px 16px;
    border-radius: var(--dld-radius-sm);
    background: var(--dld-surface-2);
    border: 1px solid var(--dld-border);
    font-size: 12px;
    line-height: 1.85;
    color: var(--dld-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 ---------------- */
.dld-modal {
    position: fixed;
    inset: 0;
    z-index: 9990;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.dld-modal[hidden] { display: none; }
.dld-modal-mask {
    position: absolute;
    inset: 0;
    background: rgba(40, 12, 26, .6);
    backdrop-filter: blur(2px);
}
.dld-modal-box {
    position: relative;
    width: min(640px, 100%);
    max-height: 84vh;
    display: flex;
    flex-direction: column;
    border-radius: var(--dld-radius);
    background: var(--dld-surface);
    border: 1px solid var(--dld-border);
    box-shadow: var(--dld-shadow-lg);
    overflow: hidden;
    animation: dld-pop .22s ease;
}
@keyframes dld-pop {
    from { opacity: 0; transform: translateY(14px) scale(.98); }
    to { opacity: 1; transform: none; }
}
.dld-modal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--dld-border);
    background: var(--dld-surface-2);
}
.dld-modal-head h3 { margin: 0; font-size: 17px; font-weight: 800; color: var(--dld-text); }
.dld-modal-x {
    appearance: none;
    border: 1px solid var(--dld-border);
    background: var(--dld-surface);
    color: var(--dld-text-soft);
    width: 30px;
    height: 30px;
    border-radius: 9px;
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
}
.dld-modal-x:hover { color: var(--dld-primary); border-color: var(--dld-primary); }
.dld-modal-body {
    padding: 18px 20px;
    overflow: auto;
    font-size: 14px;
    line-height: 1.95;
    color: var(--dld-text-soft);
}
.dld-modal-body .md-step {
    display: flex;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px dashed var(--dld-border);
}
.dld-modal-body .md-step:last-child { border-bottom: none; }
.dld-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(--dld-primary);
}
.dld-modal-foot {
    padding: 14px 20px;
    border-top: 1px solid var(--dld-border);
    display: flex;
    justify-content: flex-end;
    background: var(--dld-surface-2);
}

/* ---------------- toast ---------------- */
.dld-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(74, 16, 45, .95);
    box-shadow: 0 12px 30px rgba(50, 12, 30, .3);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
    max-width: 88vw;
    text-align: center;
}
.dld-toast.on { opacity: 1; transform: translateX(-50%) translateY(0); }

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

@media print {
    body > *:not(.detail-wrap) { display: none !important; }
    .detail-wrap > .container > *:not(.dld-sheet) { display: none !important; }
    .dld-sheet {
        display: block !important;
        padding: 12mm 10mm;
        background: #fff;
        color: #000;
        font-size: 13px;
        line-height: 1.8;
    }
    .dld-sheet h1 { font-size: 20px; margin: 0 0 4px; }
    .dld-sheet .sh-sub { font-size: 12px; color: #444; margin-bottom: 12px; }
    .dld-sheet .sh-q { font-weight: 700; margin: 10px 0 6px; }
    .dld-sheet .sh-char {
        font-size: 30px;
        font-weight: 700;
        border: 1px solid #999;
        display: inline-block;
        padding: 4px 16px;
        margin-bottom: 6px;
    }
    .dld-sheet table { width: 100%; border-collapse: collapse; margin-top: 8px; }
    .dld-sheet th, .dld-sheet td { border: 1px solid #999; padding: 5px 8px; font-size: 12px; }
    .dld-sheet th { background: #f0f0f0; }
    .dld-sheet .sh-space { height: 20mm; border: 1px dashed #bbb; margin-top: 8px; }
    .dld-sheet .sh-ans { margin-top: 10px; padding: 10px; border: 1px solid #999; }
    .dld-sheet .sh-foot { margin-top: 14px; font-size: 11px; color: #555; }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1080px) {
    .dld-hero { grid-template-columns: 1fr; }
    .dld-desk-top { grid-template-columns: 1fr; }
    .dld-duo { grid-template-columns: 1fr; }
    .dld-duo-page { grid-template-columns: 1fr; }
    .dld-duo-page::before { display: none; }
    .dld-pane { border-top: 1px solid var(--dld-border); }
}
@media (max-width: 760px) {
    .dld-hero-copy h1 { font-size: 29px; }
    .dld-lead { font-size: 15px; }
    .dld-steps { grid-template-columns: 1fr; }
    .dld-grid2 { grid-template-columns: 1fr; }
    .dld-verdict { grid-template-columns: 1fr; padding: 22px; }
    .dld-verdict-value { font-size: 26px; }
    .dld-card, .dld-pane { padding: 18px; }
    .dld-preview-char { font-size: 86px; }
    .dld-notes th { width: auto; }
}