/*!
 * 项链长度对照 · necklace-length-guide
 * 独立设计系统「珠宝陈列卡」：象牙白 + 孔雀绿 + 香槟金 + 淡玫瑰
 * 版式：颈肩人像首屏 / 左窄量体参数 / 右宽落点与长度表 / 叠戴排布
 * 浮层共享变量作用域；深浅主题跟随导航 #themeToggle。
 */
.nlg-page, .nlg-modal, .nlg-sheet, .nlg-toast {
    --nlg-bg: #faf8f4;
    --nlg-bg2: #f1ede5;
    --nlg-card: #fffefb;
    --nlg-line: #e3ded2;
    --nlg-line2: #cbc2b0;
    --nlg-ink: #25332f;
    --nlg-ink2: #5a6a64;
    --nlg-ink3: #8e9a94;
    --nlg-green: #1f5c52;
    --nlg-green-soft: rgba(31, 92, 82, .09);
    --nlg-gold: #a87f2d;
    --nlg-gold-soft: rgba(168, 127, 45, .13);
    --nlg-rose: #b9756f;
    --nlg-rose-soft: rgba(185, 117, 111, .12);
    --nlg-shadow: 0 22px 46px -30px rgba(37, 51, 47, .5);
    --nlg-shadow-s: 0 10px 22px -16px rgba(37, 51, 47, .45);
    --nlg-serif: "Songti SC", "Noto Serif SC", Georgia, serif;
    --nlg-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    --nlg-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}
:root[data-theme="dark"] .nlg-page,
:root[data-theme="dark"] .nlg-modal,
:root[data-theme="dark"] .nlg-sheet,
:root[data-theme="dark"] .nlg-toast {
    --nlg-bg: #101a18;
    --nlg-bg2: #14211e;
    --nlg-card: #192722;
    --nlg-line: #2a3c36;
    --nlg-line2: #395048;
    --nlg-ink: #e8f1ed;
    --nlg-ink2: #b2c5bc;
    --nlg-ink3: #7d968c;
    --nlg-green: #63c2ad;
    --nlg-green-soft: rgba(99, 194, 173, .14);
    --nlg-gold: #e0c47a;
    --nlg-gold-soft: rgba(224, 196, 122, .15);
    --nlg-rose: #efb0ad;
    --nlg-rose-soft: rgba(239, 176, 173, .14);
    --nlg-shadow: 0 22px 46px -28px rgba(0, 0, 0, .85);
    --nlg-shadow-s: 0 10px 22px -14px rgba(0, 0, 0, .75);
}
.nlg-page {
    background:
        radial-gradient(820px 400px at 6% -8%, var(--nlg-green-soft), transparent 62%),
        radial-gradient(680px 380px at 100% 2%, var(--nlg-gold-soft), transparent 60%),
        var(--nlg-bg);
    color: var(--nlg-ink); font-family: var(--nlg-sans); font-size: 15px; line-height: 1.85; min-height: 60vh;
}
.nlg-page *, .nlg-page *::before, .nlg-page *::after, .nlg-modal *, .nlg-sheet * { box-sizing: border-box; }
.nlg-page b, .nlg-page strong { color: var(--nlg-green); font-weight: 800; }
.nlg-wrap { max-width: 1180px; margin: 0 auto; padding: 20px 16px 12px; }
.nlg-page .detail-breadcrumb { margin: 0 0 16px; font-size: 13px; color: var(--nlg-ink2); }
.nlg-page .detail-breadcrumb a { color: var(--nlg-gold); text-decoration: none; }
.nlg-page .detail-breadcrumb .sep { margin: 0 8px; color: var(--nlg-ink3); }

/* 首屏 */
.nlg-hero {
    display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 26px;
    padding: 28px 30px 24px; border-radius: 22px; border: 1.5px solid var(--nlg-line);
    background: linear-gradient(145deg, var(--nlg-card) 0%, var(--nlg-bg2) 100%);
    box-shadow: var(--nlg-shadow); position: relative; overflow: hidden;
}
.nlg-hero::after { content: ''; position: absolute; right: 24px; top: 18px; width: 54px; height: 54px; border-radius: 50%; border: 1px solid var(--nlg-gold); opacity: .35; }
.nlg-kicker { display: inline-block; padding: 3px 12px; border-radius: 999px; font-size: 12px; font-weight: 800; letter-spacing: .12em; color: var(--nlg-green); background: var(--nlg-green-soft); border: 1px solid var(--nlg-line); }
.nlg-hero h1 { font-family: var(--nlg-serif); font-size: clamp(26px, 3.3vw, 38px); line-height: 1.32; margin: 13px 0 8px; }
.nlg-sub { margin: 0; color: var(--nlg-ink2); font-size: 15px; line-height: 1.9; max-width: 600px; }
.nlg-sub b { color: var(--nlg-gold); }
.nlg-facts { display: flex; gap: 10px; flex-wrap: wrap; margin: 16px 0; }
.nlg-facts > div { flex: 1 1 120px; padding: 10px 14px; border-radius: 12px; background: var(--nlg-card); border: 1px solid var(--nlg-line); box-shadow: var(--nlg-shadow-s); }
.nlg-facts b { display: block; font-family: var(--nlg-mono); font-size: 21px; line-height: 1.3; color: var(--nlg-green); }
.nlg-facts span { font-size: 12px; color: var(--nlg-ink3); }
.nlg-quick { display: flex; gap: 7px; align-items: center; flex-wrap: wrap; }
.nlg-quick > span { font-size: 12.5px; color: var(--nlg-ink3); }
.nlg-inch {
    min-width: 48px; padding: 7px 10px; border-radius: 999px; border: 1.5px solid var(--nlg-line2);
    background: var(--nlg-card); color: var(--nlg-ink2); font-family: var(--nlg-mono); font-size: 13px; font-weight: 700; cursor: pointer; transition: .16s;
}
.nlg-inch:hover { border-color: var(--nlg-gold); color: var(--nlg-gold); }
.nlg-inch.is-on { background: var(--nlg-green); border-color: var(--nlg-green); color: #fff; }
:root[data-theme="dark"] .nlg-inch.is-on { color: #101a18; }
.nlg-inch--go { border-radius: 9px; font-family: var(--nlg-sans); border-color: var(--nlg-rose); color: var(--nlg-rose); }
.nlg-inch--go:hover { background: var(--nlg-rose); color: #fff; }

/* 人像 SVG */
.nlg-hero-side { display: flex; align-items: center; justify-content: center; padding: 12px; border-radius: 16px; background: var(--nlg-bg2); border: 1px dashed var(--nlg-line2); }
.nlg-figure { width: min(320px, 100%); text-align: center; }
.nlg-figure svg { width: 100%; height: auto; display: block; }
.nlg-figure-body { fill: var(--nlg-card); stroke: var(--nlg-line2); stroke-width: 2; }
.nlg-head { fill: var(--nlg-card); stroke: var(--nlg-line2); stroke-width: 2; }
.nlg-collar, .nlg-clav { fill: none; stroke: var(--nlg-line2); stroke-width: 1.4; stroke-dasharray: 4 4; }
.nlg-arc { fill: none; stroke: var(--nlg-line2); stroke-width: 2.2; opacity: .55; cursor: pointer; transition: .2s; }
.nlg-arc:hover { opacity: .95; stroke: var(--nlg-gold); }
.nlg-arc.is-on { stroke: var(--nlg-gold); stroke-width: 3.6; opacity: 1; filter: drop-shadow(0 2px 3px var(--nlg-gold-soft)); }
.nlg-pendant { fill: var(--nlg-rose); stroke: var(--nlg-card); stroke-width: 2; transition: .3s; }
.nlg-figure-cap { display: block; margin-top: 6px; font-size: 11.5px; color: var(--nlg-ink3); }

/* 主体 */
.nlg-body { display: grid; grid-template-columns: minmax(0, 330px) minmax(0, 1fr); gap: 22px; margin-top: 22px; align-items: start; }
.nlg-body > * { min-width: 0; }
.nlg-form, .nlg-result { background: var(--nlg-card); border: 1.5px solid var(--nlg-line); border-radius: 18px; padding: 20px 22px 22px; box-shadow: var(--nlg-shadow-s); }
.nlg-form { border-right: 4px solid var(--nlg-gold); }
.nlg-h { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.nlg-h > span { font-family: var(--nlg-mono); font-size: 12px; color: var(--nlg-rose); border: 1px solid var(--nlg-rose-soft); padding: 2px 7px; border-radius: 6px; }
.nlg-h h2 { margin: 0; font-family: var(--nlg-serif); font-size: 18px; }
.nlg-field { margin-bottom: 15px; }
.nlg-label { display: flex; justify-content: space-between; gap: 8px; align-items: baseline; font-size: 13.5px; font-weight: 700; margin-bottom: 6px; }
.nlg-label em { font-style: normal; font-size: 12px; color: var(--nlg-green); font-weight: 700; }
.nlg-label small { font-size: 11px; color: var(--nlg-ink3); font-weight: 400; }
.nlg-input { width: 100%; padding: 9px 11px; border-radius: 9px; border: 1.5px solid var(--nlg-line2); background: var(--nlg-bg2); color: var(--nlg-ink); font-family: var(--nlg-mono); font-size: 15px; outline: none; }
.nlg-input:focus { border-color: var(--nlg-green); box-shadow: 0 0 0 3px var(--nlg-green-soft); }
.nlg-seg { display: flex; gap: 5px; }
.nlg-seg--wrap { flex-wrap: wrap; }
.nlg-seg button { flex: 1 1 auto; padding: 8px 8px; border-radius: 9px; border: 1.5px solid var(--nlg-line); background: var(--nlg-bg2); color: var(--nlg-ink2); font-size: 12.5px; font-weight: 700; cursor: pointer; font-family: var(--nlg-sans); }
.nlg-seg button.is-on { border-color: var(--nlg-green); background: var(--nlg-green-soft); color: var(--nlg-green); }
.nlg-err { margin: 0 0 8px; font-size: 12px; color: var(--nlg-rose); }
.nlg-actions { display: flex; gap: 7px; flex-wrap: wrap; }
.nlg-btn { padding: 9px 14px; border-radius: 9px; border: 1.5px solid var(--nlg-line2); background: var(--nlg-card); color: var(--nlg-ink2); font-size: 13px; font-weight: 700; cursor: pointer; font-family: var(--nlg-sans); transition: .15s; }
.nlg-btn:hover { border-color: var(--nlg-green); color: var(--nlg-green); }
.nlg-btn--main { background: var(--nlg-green); border-color: var(--nlg-green); color: #fff; flex: 1 1 100%; }
.nlg-btn--main:hover { color: #fff; filter: brightness(1.1); }
:root[data-theme="dark"] .nlg-btn--main { color: #101a18; }
.nlg-btn--sm { padding: 6px 11px; font-size: 12px; }

/* 结果 */
.nlg-verdict { display: grid; grid-template-columns: minmax(0, .75fr) minmax(0, 1.25fr); gap: 18px; padding: 18px; border-radius: 14px; background: var(--nlg-bg2); border: 1px solid var(--nlg-line); }
.nlg-verdict-num small { display: block; font-size: 12px; color: var(--nlg-ink3); }
.nlg-verdict-num b { display: block; font-family: var(--nlg-mono); font-size: clamp(28px, 3.8vw, 42px); color: var(--nlg-green); line-height: 1.2; }
.nlg-verdict-num span { display: block; font-size: 12.5px; color: var(--nlg-ink2); }
.nlg-verdict-txt { display: flex; align-items: center; font-size: 13.5px; line-height: 1.85; color: var(--nlg-ink2); }
.nlg-block-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; margin: 18px 0 9px; flex-wrap: wrap; }
.nlg-block-head b { font-family: var(--nlg-serif); font-size: 15.5px; }
.nlg-block-head span { font-size: 11.5px; color: var(--nlg-ink3); }
.nlg-layer-list { display: flex; gap: 9px; flex-wrap: wrap; }
.nlg-layer-item { flex: 1 1 130px; padding: 11px 13px; border-radius: 11px; border: 1px solid var(--nlg-line); background: var(--nlg-card); }
.nlg-layer-item b { display: block; font-family: var(--nlg-mono); font-size: 17px; color: var(--nlg-gold); }
.nlg-layer-item span { display: block; font-size: 11.5px; color: var(--nlg-ink2); }
.nlg-scroll { overflow-x: auto; }
.nlg-table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.nlg-table th { text-align: left; padding: 8px 9px; background: var(--nlg-bg2); color: var(--nlg-ink3); font-weight: 700; border-bottom: 1.5px solid var(--nlg-line2); white-space: nowrap; }
.nlg-table td { padding: 8px 9px; border-bottom: 1px solid var(--nlg-line); color: var(--nlg-ink2); }
.nlg-table .nlg-pick { border: 0; background: none; color: var(--nlg-green); font-weight: 700; cursor: pointer; padding: 0; font-family: var(--nlg-mono); font-size: 12.5px; }
.nlg-table .nlg-pick:hover { text-decoration: underline; }
.nlg-table .nlg-mini { padding: 3px 8px; font-size: 11px; border-radius: 6px; border: 1px solid var(--nlg-line2); background: var(--nlg-card); color: var(--nlg-rose); cursor: pointer; }
.nlg-table input.nlg-memo { width: 100%; min-width: 80px; padding: 4px 6px; border-radius: 6px; border: 1px solid var(--nlg-line); background: var(--nlg-bg2); color: var(--nlg-ink); font-size: 12px; }
.nlg-memo-view { display: block; font-size: 11px; color: var(--nlg-ink3); word-break: break-all; }
.nlg-tip { margin: 8px 0 0; font-size: 11.5px; color: var(--nlg-ink3); }
.nlg-batch-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.nlg-batch-head b { font-family: var(--nlg-serif); font-size: 15.5px; }
.nlg-batch-head span { font-size: 11.5px; color: var(--nlg-ink3); }
.nlg-batch-btns { display: flex; gap: 6px; flex-wrap: wrap; }

/* 导读 */
.nlg-guide { margin: 22px 0 6px; padding: 20px 24px; border-radius: 18px; background: var(--nlg-card); border: 1.5px solid var(--nlg-line); }
.nlg-guide h2 { margin: 0 0 14px; font-family: var(--nlg-serif); font-size: 19px; }
.nlg-guide-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.nlg-guide article { padding: 12px 14px; border-radius: 12px; background: var(--nlg-bg2); border: 1px solid var(--nlg-line); }
.nlg-guide article > span { font-family: var(--nlg-mono); font-size: 12px; color: var(--nlg-gold); font-weight: 700; }
.nlg-guide h3 { margin: 3px 0 5px; font-size: 15px; font-family: var(--nlg-serif); }
.nlg-guide p { margin: 0; font-size: 13px; line-height: 1.85; color: var(--nlg-ink2); }

/* 浮层 */
.nlg-modal[hidden] { display: none !important; }
.nlg-modal { position: fixed; inset: 0; z-index: 9000; display: flex; align-items: center; justify-content: center; padding: 20px; background: rgba(14, 26, 22, .6); backdrop-filter: blur(3px); font-family: var(--nlg-sans); color: var(--nlg-ink); }
.nlg-sheet { width: min(460px, 100%); padding: 24px; border-radius: 18px; background: var(--nlg-card); border: 1.5px solid var(--nlg-line); box-shadow: var(--nlg-shadow); }
.nlg-sheet h3 { margin: 0 0 8px; font-family: var(--nlg-serif); font-size: 20px; }
.nlg-sheet p { margin: 0 0 12px; font-size: 13.5px; color: var(--nlg-ink2); line-height: 1.8; }
.nlg-sheet code { display: block; padding: 10px 12px; border-radius: 9px; background: var(--nlg-bg2); border: 1px dashed var(--nlg-line2); font-family: var(--nlg-mono); font-size: 12px; word-break: break-all; color: var(--nlg-green); }
.nlg-sheet-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 14px; }
.nlg-toast { position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%) translateY(10px); z-index: 9500; padding: 9px 18px; border-radius: 999px; font-size: 13px; font-weight: 700; background: var(--nlg-ink); color: var(--nlg-card); opacity: 0; pointer-events: none; transition: .25s; font-family: var(--nlg-sans); }
.nlg-toast.is-on { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 980px) {
    .nlg-hero, .nlg-body, .nlg-verdict { grid-template-columns: minmax(0, 1fr); }
    .nlg-guide-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 600px) {
    .nlg-wrap { padding: 14px 12px 8px; }
    .nlg-hero { padding: 20px 16px; }
    .nlg-form, .nlg-result, .nlg-guide { padding: 16px 14px; }
    .nlg-table { min-width: 0; }
    .nlg-table th, .nlg-table td { padding: 6px 5px; font-size: 11.5px; }
}


/* 390 窄屏：公共「下一步推荐」卡片的 grid item 默认 min-width:auto 会被长文本撑开，
   这里做页面级兼容修复（本 CSS 只在本页加载，不影响站内其它页面）。 */
@media (max-width: 640px) {
    .tool-rec-grid > * { min-width: 0; }
    .tool-rec-item { min-width: 0; max-width: 100%; }
    .tool-rec-body b, .tool-rec-body small { white-space: normal; word-break: break-word; }
}