/* 主界面聚焦购物清单和推荐结果；详细条件收进弹窗，手机保留完整功能。 */
:root{color-scheme:light;--bg:#f5f6fa;--ink:#202431;--muted:#747987;--line:#e9ebf1;--accent:#6551df;--soft:#f2efff;--success:#288169;--danger:#b64343;font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;font-synthesis:none;color:var(--ink);background:var(--bg)}
*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}button,summary{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #b6a9f5;outline-offset:3px}button{border:0}h1,h2,h3,p{margin:0}h2{font-size:17px;font-weight:650;letter-spacing:-.3px}h3{font-size:14px}.header{height:84px;max-width:1220px;margin:auto;padding:0 40px;display:flex;align-items:center;justify-content:space-between}/* 品牌采用图形与两级文字，图标不重复品牌首字；副标题说明工具用途。 */
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:#6150dc;color:#fff;flex-shrink:0}.brand-mark svg{display:block;width:30px;height:30px}.brand-wordmark{display:grid;gap:4px}.brand-name{font-size:21px;font-weight:650;line-height:1.2;letter-spacing:.5px;color:#25283b}.brand-note{font-size:10px;font-weight:400;line-height:1.4;letter-spacing:1px;color:#7c8294}main{max-width:1220px;margin:auto;padding:0 40px}.intro{display:flex;justify-content:space-between;align-items:flex-end;padding:31px 0 26px;gap:20px}.eyebrow{font-size:11px;color:var(--muted);letter-spacing:1px;margin-bottom:10px}.intro h1{font-size:34px;letter-spacing:-1.3px;line-height:1.4}.intro h1 span{color:var(--accent)}.intro p{font-size:13px;color:var(--muted);margin-top:9px}.intro-note{font-size:11px;color:var(--muted);padding-bottom:4px;white-space:nowrap}.status-dot{width:6px;height:6px;border-radius:50%;background:var(--success);display:inline-block;margin-right:4px}.notice{display:flex;align-items:center;justify-content:space-between;gap:12px;border:1px solid #e5e0fc;background:#f0edfd;color:#635987;padding:8px 16px;border-radius:10px;margin-bottom:22px;font-size:12px}.notice b{font-weight:550}.notice .text-button{color:var(--accent)}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 350px;gap:24px;align-items:start}.workspace-left{display:grid;gap:20px;min-width:0}.panel{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;min-width:0}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:22px 24px;min-height:75px}.heading-title{display:flex;align-items:center;gap:10px}.count{font-size:11px;background:var(--bg);padding:3px 7px;border-radius:6px;color:var(--muted);font-variant-numeric:tabular-nums}.text-button{font-size:12px;color:var(--muted);padding:8px 4px;background:transparent;white-space:nowrap;min-height:34px}.text-button:hover{color:var(--accent)}.accent{color:var(--accent)}.danger{color:var(--danger)}.small{font-size:11px}.muted{color:var(--muted)}.item-row{display:flex;gap:14px;align-items:center;margin:0 24px;padding:20px 0;border-top:1px solid var(--line)}.item-avatar{width:42px;height:45px;background:#f1f0fa;border-radius:11px;display:grid;place-items:center;flex-shrink:0;font-size:18px;color:#8a7cae;font-weight:550}.item-info{min-width:0;flex:1}.item-name{font-size:14px;font-weight:550;overflow-wrap:anywhere;line-height:1.6}.item-name-button{cursor:pointer;text-align:left;background:transparent;padding:0;color:inherit}.item-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:5px;font-size:11px;color:var(--muted)}.required-toggle{padding:3px 8px;border-radius:5px;font-size:10px;line-height:1.6;background:var(--soft);color:var(--accent)}.required-toggle.optional{background:#f2f3f6;color:#6d7380}.item-price{font-size:16px;font-weight:600;font-variant-numeric:tabular-nums;white-space:nowrap;letter-spacing:-.4px}.item-edit{font-size:11px}.cart-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:17px 24px;border-top:1px solid var(--line)}.add-button{background:transparent;color:var(--accent);font-size:13px;padding:8px 0;min-height:38px}.offer-row{display:flex;align-items:center;gap:12px;padding:16px 0;margin:0 24px;border-top:1px solid var(--line)}.offer-symbol{font-size:16px;font-weight:650;color:var(--accent);background:var(--soft);border-radius:8px;min-width:40px;height:40px;display:grid;place-items:center}.offer-info{min-width:0;flex:1}.offer-title{font-size:13px;font-weight:550;line-height:1.6;overflow-wrap:anywhere}.offer-meta{display:flex;gap:7px;flex-wrap:wrap;font-size:10px;color:var(--muted);margin-top:5px}.offer-pending{color:#a46e1e}.offer-disabled{opacity:.55}.switch{display:flex;align-items:center;flex-shrink:0;cursor:pointer;min-height:34px}.switch input{appearance:none;width:30px;height:18px;border-radius:20px;background:#dbdde7;position:relative;margin:0;cursor:pointer}.switch input:before{content:"";position:absolute;top:3px;left:3px;width:12px;height:12px;background:#fff;border-radius:50%;transition:transform .12s}.switch input:checked{background:var(--accent)}.switch input:checked:before{transform:translateX(12px)}.section-footnote{font-size:11px;color:var(--muted);line-height:1.8;padding:14px 24px;border-top:1px solid var(--line);background:#fcfcfe}.bottom-actions{display:flex;align-items:center;justify-content:flex-end;gap:14px;color:var(--muted);font-size:10px;margin-top:-9px}.bottom-actions>span{margin-right:auto;line-height:1.6}.bottom-actions .text-button{font-size:10px}.result-panel{position:sticky;top:24px;border-top:3px solid var(--accent);box-shadow:0 6px 24px #24244404}.estimate-tag{font-size:10px;padding:4px 7px;background:var(--soft);color:var(--accent);border-radius:5px}.result-main{padding:2px 24px 24px}.price-label{font-size:12px;color:var(--muted)}.big-price{font-size:44px;line-height:1.4;font-weight:650;letter-spacing:-1.5px;font-variant-numeric:tabular-nums;margin-top:6px;overflow-wrap:anywhere}.big-price .currency{font-size:22px;font-weight:500;margin-right:3px}.save-pill{display:inline-flex;align-items:center;gap:5px;font-size:11px;color:var(--success);background:#eff8f3;border-radius:6px;padding:6px 9px;margin-top:6px;line-height:1.6}.result-divider{border:0;border-top:1px solid var(--line);margin:21px 0}.money-line{display:flex;justify-content:space-between;gap:14px;font-size:12px;line-height:1.8;margin:9px 0;color:var(--muted)}.money-line span:last-child{color:var(--ink);font-variant-numeric:tabular-nums;white-space:nowrap}.money-line.discount span:last-child{color:var(--accent)}.money-line.strong{font-weight:600;color:var(--ink)}.recommendation{font-size:12px;line-height:1.9;background:var(--bg);padding:13px;border-radius:9px;color:#535a6b;overflow-wrap:anywhere}.recommendation b{font-weight:600;color:var(--ink)}.recommendation+.recommendation{margin-top:10px}.pending-note{font-size:11px;line-height:1.9;color:#9b702c;padding-top:10px}.result-details{margin-top:18px;font-size:11px;color:var(--muted);line-height:1.8}.result-details summary{min-height:30px}.result-details p{margin-top:8px;overflow-wrap:anywhere}.primary-button{background:var(--accent);color:#fff;border-radius:9px;padding:12px 18px;font-size:13px;font-weight:550;min-height:44px}.primary-button:hover{background:#5745c7}.copy-button{width:100%;margin-top:18px}.copy-status{font-size:11px;line-height:1.6;margin-top:8px;color:var(--muted)}.result-footer{padding:16px 24px;background:#fafafe;border-top:1px solid var(--line);font-size:10px;line-height:1.8;color:var(--muted)}.empty-state{padding:28px 24px 36px;font-size:13px;line-height:1.9;color:var(--muted);text-align:center}.error-state{padding:16px 24px 24px;font-size:13px;color:var(--danger);line-height:1.9}.loading-state{padding:20px 24px 30px;color:var(--muted);font-size:13px}.empty-mark{font-size:30px;color:#b2a6e5;margin-bottom:10px}footer{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:10px;color:#8a8f9b;padding:28px 0 36px;line-height:1.8}.mobile-result-link{display:none}
/* 弹窗输入不落盘，保存时才更新清单，取消不会修改数据。 */
dialog{width:min(520px,calc(100% - 28px));max-height:calc(100dvh - 40px);padding:26px;border:1px solid var(--line);border-radius:18px;color:var(--ink);background:#fff;box-shadow:0 24px 100px #15152b30}dialog::backdrop{background:#1b1c354a;backdrop-filter:blur(3px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;gap:12px}.dialog-heading h2{font-size:19px}.close-button{background:transparent;color:var(--muted);font-size:24px;min-height:36px;min-width:36px;border-radius:8px}.close-button:hover{background:var(--bg)}.field{display:grid;gap:8px;margin-top:18px;min-width:0}.field>label,legend{font-size:12px;font-weight:550}.field input,.field select,textarea{width:100%;min-width:0;min-height:44px;border:1px solid #dfe2ec;border-radius:8px;padding:11px 12px;background:#fff;color:var(--ink);font-size:14px}.field input::placeholder,textarea::placeholder{color:#a0a5b2}.field-hint{font-size:11px;color:var(--muted);line-height:1.85;margin-top:4px}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.choice-field,.scope-field{padding:0;border:0;margin:22px 0 0}.choice-field legend,.scope-field legend{margin-bottom:12px}.choice-field label{font-size:13px;display:inline-flex;align-items:center;gap:7px;margin-right:24px;min-height:34px}input[type=checkbox],input[type=radio]{accent-color:var(--accent)}.advanced{margin-top:22px;border-top:1px solid var(--line);padding-top:16px}.advanced summary{font-size:12px;color:#626a7e;line-height:1.8;min-height:30px}.advanced[open] summary{color:var(--accent)}.dialog-actions{display:flex;justify-content:flex-end;align-items:center;gap:16px;margin-top:26px}.dialog-actions .danger{margin-right:auto}.error{font-size:12px;color:var(--danger);line-height:1.8;margin-top:12px}.input-with-button{display:flex;gap:8px;min-width:0}.input-with-button input{flex:1}.secondary-button{font-size:12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);padding:0 12px;white-space:nowrap}.scope-option{display:flex;align-items:center;gap:9px;min-height:38px;font-size:12px;line-height:1.7;overflow-wrap:anywhere}.scope-option input{flex-shrink:0}.confirmation{display:flex;align-items:flex-start;gap:8px;font-size:12px;line-height:1.9;margin-top:22px;color:#535b6c}.confirmation input{margin-top:5px;flex-shrink:0}textarea{resize:vertical;line-height:1.9;margin-top:12px}.help-content{font-size:13px;line-height:1.9}.help-content h3{margin-top:20px;margin-bottom:6px}.help-content p{color:var(--muted);margin:8px 0}.help-content a{color:var(--accent);font-size:12px}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}[hidden]{display:none!important}
@media(max-width:1020px){.header{padding:0 24px}main{padding:0 24px}.workspace{grid-template-columns:minmax(0,1fr) 315px;gap:18px}.intro-note{display:none}.item-row,.offer-row{margin:0 20px}.item-row{gap:10px}.item-avatar{width:32px;height:37px;font-size:15px}.panel-heading{padding:20px}.cart-actions{padding:14px 20px}.cart-actions .small{display:none}}
@media(max-width:780px){.workspace{grid-template-columns:1fr}.result-panel{position:static}.intro{padding-top:20px}.intro h1{font-size:30px}.header{height:72px}.mobile-result-link{display:flex;position:fixed;bottom:16px;left:50%;transform:translateX(-50%);align-items:center;gap:20px;background:#29243f;color:#fff;padding:13px 22px;border-radius:50px;box-shadow:0 6px 28px #211b3c25;font-size:12px;white-space:nowrap;z-index:2;max-width:calc(100% - 32px)}.mobile-result-link span:first-child{font-weight:600;font-variant-numeric:tabular-nums}footer{padding-bottom:85px}.big-price{font-size:46px}.result-panel{scroll-margin-top:16px}.cart-actions .small{display:block}.bottom-actions{padding:0 2px}}
@media(max-width:480px){.header{padding:0 18px}.brand{gap:9px}.brand-mark{width:36px;height:36px;border-radius:10px}.brand-mark svg{width:26px;height:26px}.brand-name{font-size:18px}.brand-wordmark{gap:3px}.brand-note{font-size:9px;letter-spacing:.3px}main{padding:0 16px}.intro h1{font-size:28px}.intro p{font-size:12px}.intro{padding:17px 0 22px}.eyebrow{font-size:10px}.notice{padding:8px 12px;margin-bottom:16px}.notice-detail{display:none}.notice .text-button{font-size:11px}.workspace-left{gap:16px}.panel-heading{padding:18px;min-height:66px}h2{font-size:16px}.item-row,.offer-row{margin:0 18px}.item-row{gap:10px;padding:17px 0;flex-wrap:wrap}.item-avatar{display:none}.item-price{font-size:15px}.item-info{flex-basis:calc(100% - 100px)}.item-edit{margin-left:auto;padding:3px 0;min-height:25px}.item-row>.item-edit{display:none}.item-name-button:after{content:" ›";color:#9b95b0}.cart-actions{padding:13px 18px}.cart-actions .small{font-size:10px}.offer-row{gap:9px}.offer-symbol{min-width:34px;height:36px;font-size:14px}.offer-meta{gap:5px}.section-footnote{padding:12px 18px}.result-main{padding:0 20px 22px}.result-footer{padding:14px 20px}.bottom-actions{gap:10px;flex-wrap:wrap}.bottom-actions>span{flex-basis:100%;margin-bottom:-5px}dialog{padding:22px 18px;max-height:calc(100dvh - 24px)}.field input,.field select,textarea{font-size:16px}.confirmation,.scope-option{font-size:13px}.scope-option{min-height:44px}.field-grid{gap:10px}footer{font-size:10px;gap:4px}.mobile-result-link{bottom:12px}.item-meta{font-size:10px}.required-toggle{min-height:32px;padding:3px 9px}}
@media(prefers-reduced-motion:reduce){.switch input:before{transition:none}}
/* 页头保留轻量方案入口，不挤占手机上的商品录入空间。 */
.header-actions{display:flex;gap:16px;align-items:center}
/* 优惠入口按常用名称排列，窄屏自动换行，不要求用户横向寻找按钮。 */
.offer-shortcuts{display:flex;flex-wrap:wrap;gap:8px;padding:0 24px 18px}.shortcut-chip{border:1px solid #e4def8;background:#f9f7ff;color:#68579a;font-size:12px;min-height:36px;padding:8px 11px;border-radius:9px}.shortcut-chip:hover{background:var(--soft)}.shortcut-chip:disabled{opacity:.45;cursor:not-allowed}.template-hint{font-size:12px;line-height:1.9;color:#68579a;background:var(--soft);padding:12px 14px;border-radius:10px}.scope-actions{display:flex;gap:20px;margin-top:-8px;margin-bottom:6px}
/* 逐件金额直接来自最终分摊，名称允许换行，价格列保持完整。 */
.item-breakdown,.coupon-checks{margin-top:20px;border-top:1px solid var(--line);padding-top:16px;font-size:12px}.item-breakdown summary,.coupon-checks summary{font-weight:600;line-height:1.8;min-height:32px;cursor:pointer}.breakdown-row{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;padding:11px 0;border-bottom:1px solid var(--line)}.breakdown-row>div{min-width:0}.breakdown-row b{font-weight:500;display:block;overflow-wrap:anywhere;line-height:1.7}.breakdown-row span{font-size:10px;color:var(--muted);display:block;line-height:1.8;margin-top:3px}.breakdown-row strong{font-variant-numeric:tabular-nums;white-space:nowrap;font-weight:600;line-height:1.7}.coupon-check{margin-top:10px;padding:11px 12px;background:#fff9ef;border-radius:8px;font-size:11px;line-height:1.8;color:#8e6b37}.coupon-check b{font-weight:600}.coupon-check p{margin-top:4px;overflow-wrap:anywhere}
/* 快照管理放在二级弹窗，手机首屏仍以商品录入为主。 */
.plan-action{margin-top:14px;padding:14px;background:var(--soft);border-radius:10px;font-size:12px;line-height:1.9;overflow-wrap:anywhere}
.saved-plans{display:grid;gap:10px;margin-top:22px}.saved-plan{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:10px;padding:12px}.saved-plan>div{flex:1;min-width:0}.saved-plan b{display:block;font-size:13px;font-weight:550;overflow-wrap:anywhere}.saved-plan span{display:block;font-size:11px;color:var(--muted);margin-top:5px}.backup-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:12px}#backup-text{font-size:12px;-webkit-user-select:text;user-select:text}.backup-actions .secondary-button{min-height:44px}
@media(max-width:480px){.header-actions{gap:10px}.offer-shortcuts{padding:0 18px 16px;gap:7px}.shortcut-chip{font-size:11px;min-height:40px}.saved-plan{gap:8px;padding:10px}.saved-plan .text-button{font-size:11px}#backup-text{font-size:16px}}
/* 手机横屏避开刘海；保留缩放能力，使用安全区适配底部手势条。 */
body{padding-left:env(safe-area-inset-left,0px);padding-right:env(safe-area-inset-right,0px);-webkit-text-size-adjust:100%}
body.modal-open{position:fixed;left:0;right:0;overflow:hidden}
.modal-open .mobile-result-link{display:none}
/* 显式隐藏未打开的 dialog，兼容不认识原生弹窗的内核；后备遮罩阻止点击背景。 */
dialog:not([open]){display:none}
dialog[open]{display:block;position:fixed;left:0;right:0;bottom:auto;top:calc(var(--viewport-top,0px) + 24px);margin:0 auto;z-index:11;overflow:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;max-height:calc(100vh - 48px);max-height:calc(var(--viewport-height,100vh) - 48px - env(safe-area-inset-bottom,0px))}
.dialog-backdrop{position:fixed;inset:0;background:#1b1c3570;z-index:10}
#copy-text{-webkit-user-select:text;user-select:text;resize:none}
/* 触屏输入用 16px，避免输入时页面意外放大；较大的点击区域便于单手操作。 */
@media(pointer:coarse){.field input,.field select,textarea{font-size:16px}.close-button,.text-button,.add-button,.switch,.choice-field label,.scope-option{min-height:44px}.close-button{min-width:44px}.required-toggle{min-height:40px}.advanced summary{min-height:40px}.switch{padding:0 5px}}
@media(max-width:780px){.mobile-result-link{bottom:calc(12px + env(safe-area-inset-bottom,0px))}footer{padding-bottom:calc(90px + env(safe-area-inset-bottom,0px))}dialog[open]{top:calc(var(--viewport-top,0px) + 12px);max-height:calc(100vh - 24px);max-height:calc(var(--viewport-height,100vh) - 24px - env(safe-area-inset-bottom,0px))}}