:root{--green:#36a590;--deep:#007062;--soft:#f1faf8;--ground:#f7f9fa;--paper:#fff;--line:#e8ebed;--ink:#242528;--body:#3b3d40;--muted:#757980;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--ground);font-size:16px;line-height:1.55}*{box-sizing:border-box}body{margin:0;background:var(--ground);min-width:320px}button,input,select{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:2px solid var(--green);outline-offset:3px}button:disabled{cursor:not-allowed;opacity:.55}[hidden]{display:none!important}.topbar{height:73px;background:var(--paper);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 32px;gap:20px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--deep)}.brand-mark{width:40px;height:40px;border-radius:10px;background:var(--deep);display:grid;place-items:center;color:#fff;font-weight:750;font-size:21px;letter-spacing:-1px}.brand strong{display:block;font-size:18px;letter-spacing:.2px}.brand span:not(.brand-mark){display:block;color:var(--muted);font-size:12px}.topbar-actions{display:flex;align-items:center;gap:14px}.access{color:var(--muted);font-size:13px}.avatar{width:34px;height:34px;border:1px solid #d2f1eb;background:var(--soft);color:var(--deep);border-radius:50%;font-size:13px}.ghost,.outline{border:1px solid var(--line);border-radius:6px;background:var(--paper);color:#555c63;padding:7px 12px;font-size:14px}.layout{display:grid;grid-template-columns:190px minmax(0,1fr);min-height:calc(100vh - 73px)}.sidebar{background:var(--paper);border-right:1px solid var(--line);padding:28px 14px 19px;display:flex;flex-direction:column}.side-label{font-size:12px;color:var(--muted);padding:0 13px 10px}.nav-list{display:flex;flex-direction:column;gap:4px}.nav-list button{border:0;background:transparent;color:#5c6168;border-radius:6px;text-align:left;padding:10px 13px;font-size:14px}.nav-list button:hover{background:#f5f6f7}.nav-list button[aria-pressed=true]{background:var(--soft);color:var(--deep);font-weight:650}.nav-list button span{float:right;font-size:12px}.topic-label{margin-top:27px}.topic-list button{padding:8px 13px}.source-note{margin:auto 11px 1px;color:var(--muted);font-size:12px;padding-top:30px}main{padding:30px;min-width:0}.heading-row{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:22px}.heading-row h1{font-size:24px;line-height:1.3;margin:0;font-weight:700}.heading-row p{font-size:13px;color:var(--muted);margin:5px 0 0}.search{width:300px;border:1px solid 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7px;border-radius:4px;font-weight:550}.source-tag.good{background:#fff7e6;color:#956615}.source-tag.ai{background:#eef4fa;color:#496788}.topic-tag{font-size:12px;color:#767c84}.item-title{border:0;background:transparent;padding:0;text-align:left;color:var(--ink);font-size:17px;line-height:1.5;font-weight:700}.item-title:hover{color:var(--deep)}.excerpt{margin:7px 0 12px;color:#686e76;font-size:14px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:#767c84;font-size:12px}.platform-tag{background:#f5f6f7;border-radius:3px;padding:2px 7px;margin-left:auto;color:#60676e;white-space:nowrap}.save{position:absolute;right:16px;top:18px;border:0;border-radius:5px;background:transparent;color:#8d949b;width:32px;height:32px;font-size:21px;line-height:1}.save:hover,.save[aria-pressed=true]{background:var(--soft);color:var(--deep)}.empty{padding:58px 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span{font-size:12px;color:var(--muted)}.auth-screen{position:fixed;inset:0;z-index:3;display:grid;place-items:center;padding:20px;background:linear-gradient(145deg,#f1faf8 0%,#f7f9fa 55%,#fff 100%)}.auth-card{width:min(100%,410px);border:1px solid var(--line);border-radius:14px;background:var(--paper);padding:34px;box-shadow:0 18px 48px #24252812}.auth-card .brand{margin-bottom:31px}.auth-card h1{margin:0;font-size:24px}.auth-card p{margin:7px 0 21px;color:var(--muted);font-size:14px}.auth-card label{display:block;color:var(--body);font-size:14px;margin:14px 0}.auth-card input{display:block;width:100%;border:1px solid #dfe3e6;border-radius:6px;padding:11px 12px;margin-top:6px;min-height:43px}.primary{width:100%;border:0;border-radius:6px;background:var(--deep);color:#fff;padding:11px 15px;margin-top:10px}.text-button{border:0;background:transparent;color:var(--deep);font-size:14px;width:100%;margin-top:15px}.form-error{color:#b34738!important;min-height:21px;margin:10px 0 0!important}.admin-dialog{border:1px solid var(--line);border-radius:12px;width:min(600px,calc(100% - 30px));padding:0;background:var(--paper);color:var(--ink);box-shadow:0 18px 50px #24252820}.admin-dialog::backdrop{background:#2425285c}.dialog-head{display:flex;justify-content:space-between;align-items:flex-start;padding:25px 26px 18px;border-bottom:1px solid var(--line)}.dialog-head h2{font-size:20px;margin:0}.dialog-head p{font-size:13px;color:var(--muted);margin:4px 0 0}.close{border:0;background:transparent;color:var(--muted);font-size:27px;line-height:1}.admin-dialog section{padding:20px 26px}.status-card{background:#f8fcfb;border-bottom:1px solid var(--line)}.status-card>div{display:flex;justify-content:space-between;align-items:center}.status-card span{font-size:13px;color:var(--muted)}.status-card strong{color:var(--deep);font-size:14px}.status-card p{color:var(--body);font-size:14px;margin:7px 0 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