:root{color-scheme:light;--ink:#303840;--accent:#3b6798;--link:#2869a2;--line:#e4e1dc;--paper:#f7f5ee;--muted:#747b83;--white:#fff;--shadow:0 2px 8px #343b4410}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.8 ui-sans-serif,system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif}a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit}button{font-size:14px;background:white;border:1px solid #d8dde3;border-radius:5px;padding:8px 14px;color:var(--ink);cursor:pointer;transition:background .15s}button:hover{background:#f0f4f8;border-color:#9caec3}button:disabled{opacity:.5;cursor:not-allowed}.primary{background:var(--accent);color:white;border-color:var(--accent)}.primary:hover{background:#305982;color:#fff}.site-header{background:var(--accent);color:#fff;box-shadow:0 2px 5px #233c5626}.header-inner{max-width:1200px;margin:auto;min-height:48px;display:flex;align-items:center;gap:30px;padding:0 24px}.site-home{color:#fff;font-size:18px;font-weight:650;letter-spacing:1px;white-space:nowrap}.site-nav{display:flex;gap:24px;align-self:stretch;align-items:center;font-size:14px}.site-nav a{color:#ecf2f8;white-space:nowrap}.site-nav a[aria-current]{color:#fff;border-bottom:2px solid #fff;align-self:stretch;display:flex;align-items:center}.badge{margin-left:auto;font-size:11px;color:#e3edf6;white-space:nowrap}.notice{max-width:1152px;margin:16px auto 0;padding:8px 14px;border:1px solid #e5e3db;border-radius:5px;background:#eeece4;color:#73766f;font-size:12px}.layout{max-width:1200px;margin:24px auto;display:grid;grid-template-columns:220px minmax(0,1fr);gap:28px;padding:0 24px}aside{align-self:start;position:sticky;top:20px;background:#fff;border:1px solid var(--line);border-radius:7px;padding:18px 14px;box-shadow:var(--shadow)}#new{width:100%}aside h2{font-size:12px;font-weight:500;color:var(--muted);margin:24px 8px 10px}#conversations{display:grid;gap:6px}#conversations button{text-align:left;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;width:100%;min-width:0;border-color:transparent;padding:9px 10px;font-size:13px;background:transparent}#conversations button:hover{background:#f4f6f9}#conversations .selected{background:#edf2f8;color:#315c8a;border-left:3px solid var(--accent);border-radius:3px;padding-left:8px}.muted{font-size:12px;color:var(--muted)}aside>.muted{margin:20px 8px;line-height:1.8}aside>details{border-top:1px solid var(--line);padding-top:14px;margin-bottom:0}aside summary{font-size:12px;font-weight:400}main{min-width:0}.page-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:26px}.breadcrumb{font-size:12px;color:var(--muted);margin:0 0 6px}.breadcrumb span{padding:0 6px;color:#aeb2b6}h1{font-size:27px;line-height:1.4;font-weight:650;margin:0;letter-spacing:1px}h1 span{font-size:14px;font-weight:400;letter-spacing:0;color:var(--muted);margin-left:12px}.page-caption{font-size:12px;color:#8a8f94;padding-bottom:3px}.eyebrow{font-size:12px;color:var(--accent);margin:0 0 12px}#welcome{background:#fff;border:1px solid var(--line);border-radius:8px;padding:38px;box-shadow:var(--shadow)}#welcome h2{font-size:25px;font-weight:600;line-height:1.5;margin:0 0 14px}#welcome>p:not(.eyebrow){color:var(--muted);max-width:560px}.example{display:block;margin-top:26px;text-align:left;width:100%;background:#f5f7fa;border-color:#e0e6ee;color:var(--link);padding:14px 16px}.example span{float:right}.question{margin:26px 0 0;padding:18px 24px;background:#edf1f6;border:1px solid #dce3eb;border-bottom:0;border-radius:8px 8px 0 0;white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.85}.question::before{content:"提问";display:block;color:#657c96;font-size:11px;font-weight:600;letter-spacing:1px;margin-bottom:7px}.answer{background:white;padding:24px 28px;border:1px solid var(--line);border-radius:0 0 8px 8px;box-shadow:var(--shadow);margin-bottom:28px}.answer-label{font-size:12px;font-weight:600;color:var(--accent);margin-bottom:16px}.answer-body{overflow-wrap:anywhere;line-height:1.95}.answer-body>p:first-child{font-size:16px;line-height:1.95;margin-top:0}.answer p{margin:12px 0}.answer-body .citation-line{display:block;font-size:13px;line-height:1.85;color:var(--muted);margin:6px 0 22px;padding-left:12px;border-left:2px solid #e4ebf3}.answer a{color:var(--link);overflow-wrap:anywhere}.answer a:hover{text-decoration:underline}.reference-link{font-variant-numeric:tabular-nums}.answer pre{white-space:pre-wrap;background:#f6f7f9;padding:14px;border-radius:5px}.answer table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse}.answer td,.answer th{border:1px solid var(--line);padding:6px 10px}.answer img{max-width:100%}.answer blockquote{margin-left:0;padding-left:16px;border-left:3px solid #d8e3ef;color:#667481}.answer details{border-top:1px solid #edf0f3;padding-top:12px;margin:12px 0}.answer summary{font-size:13px;color:#5c7087;font-weight:500}.actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:20px 0 0}.actions button{font-size:12px;padding:5px 12px}.phase{padding:12px 0;font-size:14px;color:var(--muted)}details{margin:14px 0}summary{cursor:pointer;font-size:14px}.sources{display:grid;gap:8px;font-size:13px;margin-top:12px}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-top:14px}.card{border:1px solid var(--line);padding:14px;border-radius:5px;min-width:0}.card p{font-size:12px;white-space:pre-wrap}.card-image{padding:24px 12px;background:#f4f5f7;border-radius:4px;text-align:center;font-size:12px;color:var(--muted)}form{margin-top:24px;background:#fff;border:1px solid #d8e0e9;border-radius:8px;padding:20px 24px;box-shadow:var(--shadow)}label{display:block;font-size:13px;font-weight:500;margin-bottom:8px}textarea{width:100%;resize:vertical;font:inherit;border:1px solid #e1e5eb;border-radius:5px;background:#fcfcfd;padding:12px;color:var(--ink);outline-offset:3px;min-height:100px}textarea::placeholder{color:#9a9fa6}.mode-row{display:flex;gap:12px;align-items:center;margin:12px 0}.mode-row label{margin:0;font-size:12px;color:var(--muted)}select{max-width:100%;background:#fff;border:1px solid #dce1e7;color:#526174;border-radius:4px;padding:5px 8px;font-size:12px}.compose-bottom{display:flex;justify-content:space-between;align-items:center;gap:10px}.compose-bottom span{font-size:11px}footer{text-align:center;color:var(--muted);font-size:11px;margin:24px 0}#status{color:#9d5a35;font-size:13px;white-space:pre-wrap}#status:empty{display:none}dialog{max-width:720px;width:calc(100% - 24px);border:1px solid var(--line);border-radius:8px;color:var(--ink);max-height:85vh;overflow:auto;padding:28px;box-shadow:0 12px 64px #20355033}dialog::backdrop{background:#26374b66}#share-preview{max-height:300px;overflow:auto;border:1px solid var(--line);padding:16px;font-size:14px;margin-bottom:20px}#shares{font-size:12px}#shares button{margin:6px;font-size:12px}:focus-visible{outline:2px solid #3b6798;outline-offset:3px}
@media(max-width:760px){.header-inner{padding:0 16px;gap:20px;min-height:46px}.site-home{font-size:16px}.site-nav{gap:16px;font-size:12px}.badge{display:none}.notice{margin:12px 14px 0;font-size:11px;padding:8px 10px}.layout{display:flex;flex-direction:column;gap:20px;padding:0 14px;margin-top:18px}aside{position:static;width:100%;padding:10px;box-shadow:none}#new{width:auto;font-size:12px;padding:6px 12px}aside h2,aside>.muted{display:none}#conversations{display:flex;overflow-x:auto;margin-top:8px}#conversations button{max-width:230px;flex-shrink:0;width:auto}aside>details{margin:10px 0 0;padding-top:8px}.page-heading{margin-bottom:20px}.page-caption{display:none}h1{font-size:24px}h1 span{font-size:13px}#welcome{padding:24px 20px}#welcome h2{font-size:22px}.example{font-size:12px;padding:12px}.question{padding:16px 18px;margin-top:20px;font-size:14px}.answer{padding:20px 18px}.answer-body{font-size:15px;line-height:1.9}.answer-body>p:first-child{font-size:15px}.cards{grid-template-columns:1fr}form{padding:18px}.compose-bottom span{max-width:165px}.compose-bottom button{white-space:nowrap;font-size:12px}dialog{padding:18px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}

.card-art{margin:12px auto;max-width:265px}.card-art img{display:block;width:100%;height:auto;border-radius:12px}.card-art .card-image{min-height:100px;display:flex;align-items:center;justify-content:center}

.compose-bottom{justify-content:flex-end;margin-top:12px}

#conversations .conversation-row{display:flex;align-items:center;min-width:0;border-radius:4px}
#conversations .conversation-row.selected{border-left:3px solid var(--accent);padding-left:0;background:#edf2f8}
#conversations .conversation-select{flex:1;min-width:0;width:0;margin:0}
#conversations .conversation-more{flex:0 0 30px;width:30px;padding:5px 0;font-size:20px;line-height:1.4;color:#758294}
#conversations .conversation-more:hover{background:#e3eaf3;color:var(--accent)}
#conversation-dialog,#delete-dialog{max-width:420px}#conversation-dialog h2,#delete-dialog h2{font-size:18px;margin-top:0}
#conversation-title{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:5px;color:var(--ink)}
.danger{color:#ac403b}#conversation-error,#delete-error{font-size:13px;color:#ac403b}
#undo-delete{margin:12px 0;font-size:13px;color:var(--muted)}#undo-delete button{padding:3px 10px;color:var(--link)}
#messages:empty+div[hidden]+#status:empty+form{margin-top:0}
@media(max-width:760px){#conversations .conversation-row{flex:0 0 230px}#conversations .conversation-select{flex-shrink:1;width:0}#conversations .conversation-more{flex-shrink:0}}

.preview-warning{padding:10px 12px;border-left:3px solid #b48547;background:#faf5e9;color:#795a30;font-size:13px}textarea:disabled{color:var(--muted);background:#f5f6f7;cursor:not-allowed}

.page-heading{align-items:center;justify-content:flex-start;gap:18px}.brand-mascot{display:block;width:96px;height:auto;flex:0 0 auto}.page-heading>div{min-width:0}
@media(max-width:760px){.page-heading{gap:12px}.brand-mascot{width:72px}.page-heading h1 span{display:block;margin:3px 0 0}}
#privacy-notice { margin: 1rem auto; max-width: 46rem; font-size: .9rem; line-height: 1.75; }
#privacy-notice[open] { text-align: left; padding: 1rem; background: #fff; border: 1px solid #ddd; border-radius: .35rem; }
#privacy-notice summary { cursor: pointer; }
#invite-form { padding: 1rem; margin-bottom: 1rem; background: #fff; border: 1px solid #ddd; border-radius: .35rem; }
#invite-secret { display: block; width: 100%; box-sizing: border-box; margin: .5rem 0; padding: .6rem; font: inherit; }

.detail-main{max-width:1000px;margin:32px auto;padding:0 20px;display:block}.detail-main .answer{margin-top:20px}.detail-main .question{white-space:pre-wrap}.detail-main h1 span{font-size:.5em}