:root{--bg:#f5f7f4;--panel:#fff;--ink:#23392e;--muted:#869088;--green:#2c6651;--lime:#d6eb99;--line:#e8ece7;--soft:#eef3ec;--orange:#ba8152;--shadow:0 8px 36px #24362b05;font-family:'DM Sans','Noto Sans SC',system-ui,sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.5;cursor:wait}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #96b98f;outline-offset:3px}a{color:var(--green)}button{border:0;background:none;color:inherit}svg.icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}h1,h2,h3,p{margin:0}h1{font-size:30px;letter-spacing:-1px;font-weight:600}h2{font-size:19px;font-weight:600}h3{font-size:16px;font-weight:600}small{font-size:12px;color:var(--muted)}.muted{color:var(--muted)}.eyebrow{font-size:11px;letter-spacing:2px;color:var(--muted);text-transform:uppercase}.shell{display:flex;min-height:100vh}.sidebar{width:222px;position:fixed;inset:0 auto 0 0;background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column;padding:34px 20px 22px;z-index:20}.brand{display:flex;align-items:center;gap:11px;padding:0 14px 37px}.brand-mark{width:37px;height:37px;display:grid;place-items:center;background:var(--green);border-radius:11px;color:#f8ffe4}.brand-mark .icon{width:25px;height:25px}.brand b{font-size:23px;letter-spacing:2px}.brand small{display:block;font-size:9px;letter-spacing:2px;margin-top:3px}.nav-label{font-size:10px;letter-spacing:1.5px;color:#acb4ac;padding:0 16px;margin:16px 0 12px}.nav-btn{width:100%;display:flex;align-items:center;gap:13px;padding:13px 16px;border-radius:9px;margin-bottom:5px;color:#7b867d;font-size:13px;text-align:left;transition:.2s}.nav-btn:hover{background:#f6f8f4;color:var(--green)}.nav-btn.active{background:#edf4e8;color:var(--green);font-weight:600}.nav-btn.active:after{content:'';width:5px;height:5px;border-radius:50%;background:var(--green);margin-left:auto}.nav-btn 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var(--line);background:#f9faf7;gap:20px}.crumb{font-size:12px;color:#a1a89f;display:flex;gap:14px;align-items:center}.crumb strong{color:#6d796e;font-weight:500}.top-actions{display:flex;align-items:center;gap:17px}.top-actions small{font-size:11px}.pill{border:1px solid #e3e9df;border-radius:30px;padding:7px 11px;display:flex;align-items:center;gap:7px;font-size:10px;background:#fff;color:#6a7d68}.dot{width:5px;height:5px;background:#7ca471;border-radius:50%}.content{max-width:1440px;padding:34px 42px 30px;margin:auto}.welcome{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;gap:20px}.welcome h1{margin:7px 0 10px}.welcome p{color:#8a958a;font-size:12px}.date-chip{border:1px solid var(--line);background:white;padding:9px 14px;border-radius:7px;display:flex;gap:9px;align-items:center;font-size:11px;color:#7f8e7f}.date-chip svg{width:15px;height:15px}.dashboard-grid{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:24px}.main-stack{min-width:0}.hero{position:relative;overflow:hidden;border-radius:15px;padding:28px 30px;background:#e9efe0;min-height:204px;border:1px solid #dfe7d8}.hero-content{position:relative;z-index:1;max-width:65%}.hero .eyebrow{color:#819173;font-size:9px;font-weight:600}.hero h2{font-size:25px;line-height:1.5;margin:13px 0 9px;letter-spacing:-.5px}.hero h2 span{color:#648149}.hero p{font-size:11px;color:#87917d;line-height:1.9;max-width:280px}.hero .btn{margin-top:18px;font-size:11px;padding:10px 15px}.hero-art{position:absolute;right:2%;top:5px;width:225px;height:205px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:7px;padding:10px 16px;background:var(--green);color:white;font-size:12px;border:1px solid transparent;transition:transform .2s,background .2s}.btn:hover{background:#23533f;transform:translateY(-1px)}.btn svg{width:15px;height:15px}.btn.secondary{background:#fff;color:#60755b;border-color:#e2e8dd}.btn.secondary:hover{background:#f1f6eb}.btn.ghost{background:transparent;color:#7f9472;padding:7px 0}.btn.danger{background:#fff5f1;color:#b76851;border-color:#eddad1}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:19px 0 28px}.stat{padding:18px 19px;background:#fff;border:1px solid var(--line);border-radius:11px;box-shadow:var(--shadow)}.stat-head{display:flex;align-items:center;gap:8px;color:#879382;font-size:10px}.stat-head svg{width:15px;height:15px}.stat-value{display:flex;align-items:baseline;gap:5px;margin:11px 0 8px}.stat-value b{font-size:27px;font-weight:500;letter-spacing:-1px}.stat-value span{font-size:11px;color:#99a093}.stat-footer{font-size:9px;color:#9ba594;display:flex;justify-content:space-between;gap:8px}.stat-footer 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#e7ebdd;border-radius:11px;display:flex;align-items:center;gap:15px;padding:19px}.review-icon{width:35px;height:35px;border-radius:9px;background:#e5ebd7;color:#8b9c67;display:grid;place-items:center}.review-banner h3{font-size:12px;margin-bottom:6px}.review-banner p{font-size:10px;color:#9aa28b}.review-banner .text-link{margin-left:auto;white-space:nowrap}.right-stack{display:flex;flex-direction:column;gap:19px}.daily-progress{padding:21px}.panel-title{display:flex;align-items:center;justify-content:space-between}.panel-title h3{font-size:13px}.panel-title .icon{width:15px;height:15px;color:#abb39e}.ring{width:142px;height:142px;margin:21px auto 16px;position:relative;display:grid;place-items:center}.ring svg{position:absolute;inset:0;transform:rotate(-90deg);width:100%;height:100%}.ring-track{fill:none;stroke:#eff3e9;stroke-width:8}.ring-fill{fill:none;stroke:#aac479;stroke-width:8;stroke-linecap:round;transition:stroke-dasharray .6s}.ring 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0;gap:10px}.bar-col{height:100%;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:9px;width:22px}.bar{width:15px;background:#e2eacd;border-radius:4px;min-height:3px}.bar.today{background:#a8c575}.bar-col small{font-size:9px;color:#a2ac94}.activity-note{font-size:9px;color:#99a68b;margin-top:19px;display:flex;align-items:center;gap:6px}.activity-note svg{width:12px;height:12px}.insight{padding:22px;background:#f2f4ed;border-color:#e9eddf}.insight .eyebrow{font-size:9px;color:#a3ae93;display:flex;gap:7px;align-items:center}.insight .eyebrow svg{width:13px;height:13px}.insight blockquote{margin:15px 0 12px;font-size:12px;line-height:2.1;color:#748166}.insight small{font-size:9px}.footer{display:flex;justify-content:space-between;margin-top:32px;border-top:1px solid var(--line);padding-top:18px;color:#b0b7a7;font-size:9px}.footer span:last-child{letter-spacing:1px}.demo-banner{font-size:11px;padding:10px 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#d8e1cc}.auth-form-wrap{display:flex;align-items:center;justify-content:center;padding:40px}.auth-form{max-width:350px;width:100%}.auth-form h2{font-size:26px;margin:13px 0 10px}.auth-form>p{font-size:12px;color:#93a08b;line-height:1.8;margin-bottom:28px}.field{display:block;margin-bottom:18px;font-size:12px;color:#6b7b64}.field input,.field textarea,.field select{display:block;width:100%;padding:12px;border:1px solid #dfe6d7;background:#fff;border-radius:7px;margin-top:9px;color:#3c5136;outline:none;font-size:13px}.field textarea{min-height:80px;resize:vertical}.field input:focus,.field textarea:focus{border-color:#98b17f}.auth-form .btn{width:100%;margin:5px 0 18px}.auth-switch{text-align:center;font-size:12px;color:#8e9d85}.auth-switch button{color:var(--green)}.auth-demo{display:block;margin:28px auto;font-size:11px;color:#9da891;text-decoration:underline;text-underline-offset:4px}.form-error{font-size:12px;color:#b27558;margin:12px 0;line-height:1.8}.page-head{margin-bottom:26px}.page-head h1{margin:8px 0 12px}.page-head p{font-size:12px;color:#93a087}.tool-row{display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin-bottom:20px}.filter{border:1px solid #e2e8da;padding:8px 13px;border-radius:20px;font-size:11px;color:#93a083;background:white}.filter.active{background:#edf3e4;color:#6c8457;border-color:#dce8cd}.search{margin-left:auto;padding:9px 13px;border:1px solid var(--line);border-radius:7px;background:white;font-size:12px;width:230px;color:#526b48}.full-list .lesson-row{padding:21px 22px}.kb-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.kb-card{padding:23px;display:flex;flex-direction:column;gap:14px}.kb-card>.icon{width:28px;height:28px;color:#8aa46e}.kb-card h3{font-size:16px}.kb-card p{font-size:12px;line-height:1.9;color:#94a08a}.kb-card .meta{font-size:11px;color:#9fac95;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:flex;gap:15px}.kb-card .btn{font-size:11px}.admin-layout{display:grid;grid-template-columns:1fr 1fr;gap:22px}.admin-form{padding:25px}.admin-form h3{margin-bottom:20px}.jobs{padding:22px;margin-top:22px}.job{border-bottom:1px solid var(--line);padding:15px 0;font-size:12px;color:#8f9f85;line-height:1.8}.job:last-child{border:0}.job strong{color:#617d51}.job progress{display:block;width:100%;accent-color:#9cb575;height:6px;margin-top:9px}.memory-table{width:100%;border-collapse:collapse;font-size:12px}.memory-table th{font-weight:500;color:#95a389;text-align:left;padding:17px 20px;background:#f9fbf5}.memory-table td{padding:18px 20px;border-bottom:1px solid var(--line);line-height:1.7}.memory-table td:first-child{font-weight:500}.table-wrap{overflow-x:auto}.detail-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:23px;align-items:start}.question-card{padding:28px}.question-card h2{font-size:22px;line-height:1.8;margin:18px 0 25px}.detail-meta{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.detail-meta small{font-size:10px;margin-left:auto}.answer-section{border-top:1px solid var(--line);padding:23px 0 0;margin-top:23px}.answer-section h3{font-size:12px;margin-bottom:13px;color:#81966e;display:flex;align-items:center;gap:7px}.answer-section h3 svg{width:15px;height:15px}.prose{white-space:pre-wrap;font-size:13px;line-height:2;color:#6e8164;overflow-wrap:anywhere}.source-note{border:1px solid #e4eadb;background:#f6f9f1;padding:13px;border-radius:6px;margin:25px 0;color:#94a484;font-size:10px;line-height:1.9}.answer-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:25px}.options{display:flex;flex-direction:column;gap:11px}.option{display:flex;align-items:center;gap:12px;padding:15px;border:1px solid #e4eadc;border-radius:8px;background:#fcfdf9;font-size:13px;text-align:left;line-height:1.8}.option-letter{padding:2px 9px;background:#edf2e6;border-radius:4px;color:#8fa378}.option.selected{border-color:#9ebd82;background:#f1f6e9}.option.correct{border-color:#89b77d;background:#edf8e9}.option.wrong{border-color:#d9a28b;background:#fff6ef}.fill-answer{width:100%;border:1px solid var(--line);border-radius:7px;padding:14px;font-size:14px;background:#fbfcf8;color:#57704b}.result{margin-top:21px;padding:14px;background:#edf5e8;border-radius:7px;color:#799064;font-size:12px}.result.wrong{background:#faf0e7;color:#b78a69}.back{display:inline-flex;gap:6px;align-items:center;font-size:11px;color:#93a284;margin-bottom:21px}.back svg{width:14px;height:14px}.chat-panel{overflow:hidden;position:sticky;top:25px}.chat-header{padding:20px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:11px}.chat-avatar{width:32px;height:32px;background:#edf4e5;display:grid;place-items:center;color:#8ba76d;border-radius:9px}.chat-header h3{font-size:13px;margin-bottom:5px}.chat-header small{font-size:9px;color:#a0ac91}.chat-header .save-btn{margin-left:auto;color:#99ad83}.chat-header .save-btn.saved{color:#678c48}.chat-messages{height:350px;overflow:auto;padding:20px;display:flex;flex-direction:column;gap:13px}.chat-intro{color:#9bab8d;font-size:11px;line-height:1.9;padding:14px;background:#f5f8ef;border:1px solid #eaf0e1;border-radius:8px}.message{padding:12px 14px;background:#f4f7ef;border-radius:8px;font-size:12px;line-height:1.9;color:#748768;white-space:pre-wrap;overflow-wrap:anywhere;max-width:94%}.message.user{background:#e6efdb;align-self:flex-end;color:#658050}.chat-source{font-size:9px;color:#9ead8a;margin-top:8px}.chat-prompts{padding:0 20px 13px;display:flex;flex-wrap:wrap;gap:7px}.chat-prompts button{border:1px solid #e4ebdb;border-radius:15px;font-size:9px;padding:6px 9px;color:#90a17b}.chat-form{display:flex;align-items:end;padding:12px;border-top:1px solid var(--line);gap:6px}.chat-form textarea{border:0;background:none;resize:none;flex:1;font-size:12px;color:#617b53;padding:8px;min-width:0;min-height:38px;max-height:100px;outline:none}.chat-form button{border-radius:7px;background:#98b47a;color:#fff;width:33px;height:33px;display:grid;place-items:center}.chat-form button svg{width:15px;height:15px}.chat-footnote{font-size:9px;text-align:center;padding:0 15px 12px;color:#b0b9a2}.bookmark-row{padding:23px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:15px;align-items:center}.bookmark-row h3{font-size:13px;line-height:1.8}.bookmark-row p{font-size:11px;color:#99a98a;margin-top:7px}.bookmark-row .btn{white-space:nowrap}.loading{padding:70px 20px;text-align:center;font-size:12px;color:#90a27b}.loading:before{content:'';display:block;width:25px;height:25px;border:2px solid #e2ead6;border-top-color:#8daa6a;border-radius:50%;margin:0 auto 15px;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}#toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,20px);z-index:99;opacity:0;pointer-events:none;background:#365c32;color:#f1f7e9;padding:12px 20px;border-radius:8px;font-size:12px;max-width:90vw;transition:.2s;box-shadow:0 8px 25px #233a2322}#toast.show{opacity:1;transform:translate(-50%,0)}.pending-note{font-size:11px;color:#9ba986;margin:12px 0;line-height:1.8}/* 业务隐藏规则只作用于学习区，避免覆盖桌面导航的响应式工具类。 */.learning-host .hidden{display:none!important}.inline-buttons{display:flex;gap:8px;flex-wrap:wrap}.menu-overlay{display:none}.spacer{flex:1}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
/* 独立页面也固定备案栏，并为末尾内容和提示预留空间，不遮挡操作。 */
:root{--registration-bar-height:64px;--registration-clearance:calc(var(--registration-bar-height) + env(safe-area-inset-bottom,0px));--registration-content-clearance:calc(var(--registration-clearance) + 64px)}
.site-registration{position:fixed;left:0;right:0;bottom:0;z-index:20;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:4px 20px;height:var(--registration-clearance);padding:10px max(24px,env(safe-area-inset-right,0px)) calc(10px + env(safe-area-inset-bottom,0px)) max(24px,env(safe-area-inset-left,0px));font-size:14px;line-height:1.5;text-align:center;background:#102832;color:#fff;border-top:1px solid #ffffff38}.site-registration a{color:inherit;font-weight:500;text-decoration:underline;text-underline-offset:4px;white-space:nowrap;padding:5px 0}.site-registration a:focus-visible{outline:2px solid currentColor;outline-offset:5px}
#app>.workspace,#app>.auth-layout{padding-bottom:var(--registration-content-clearance)}
#toast{bottom:calc(var(--registration-clearance) + 72px)}
@media(min-width:768px){.site-registration{font-size:15px}}
@media(max-width:767px){:root{--registration-bar-height:80px}.site-registration{flex-direction:column;flex-wrap:nowrap;gap:0}.site-registration>span{font-size:12px}}
/* 等待真实响应时显示轻柔的思考动画，兼容减少动态效果的系统偏好。 */
.message,.chat-intro{flex-shrink:0}
.thinking{display:flex;align-items:center;gap:10px;min-height:43px;color:#8fa078}
.thinking-dots{display:inline-flex;align-items:center;gap:4px;height:16px}
.thinking-dots i{width:5px;height:5px;background:#98b47a;border-radius:50%;animation:thinking-pulse 1.2s ease-in-out infinite}
.thinking-dots i:nth-child(2){animation-delay:.16s}.thinking-dots i:nth-child(3){animation-delay:.32s}
.pending-question,.thinking{animation:chat-appear .18s ease-out}
@keyframes thinking-pulse{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-3px);opacity:1}}
@keyframes chat-appear{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:1500px){.content{padding-top:43px}.hero{min-height:224px}.hero-art{right:5%;width:255px;height:225px}.lesson-row{padding:20px}.chat-messages{height:440px}}
@media(max-width:1180px){.sidebar{width:195px;padding:28px 13px}.workspace{margin-left:195px;width:calc(100% - 195px)}.content{padding:28px}.topbar{padding:0 28px}.dashboard-grid{grid-template-columns:minmax(0,1fr) 245px;gap:18px}.hero{padding:24px}.hero-art{right:-12%;width:210px;opacity:.8}.hero-content{max-width:75%}.detail-grid{grid-template-columns:minmax(0,1fr) 290px;gap:18px}.kb-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:960px){.dashboard-grid{grid-template-columns:1fr}.right-stack{display:grid;grid-template-columns:1fr 1fr 1fr;gap:15px}.ring{width:100px;height:100px;margin:16px auto}.ring strong{font-size:24px}.hero-art{right:2%;width:225px}.hero-content{max-width:65%}.daily-progress,.activity,.insight{padding:17px}.progress-legend{flex-wrap:wrap;gap:4px}.progress-line{font-size:9px}.detail-grid{grid-template-columns:1fr}.chat-panel{position:static}.chat-messages{height:260px}.admin-layout{grid-template-columns:1fr}.top-actions>small{display:none}.auth-copy h1{font-size:38px}.auth-art{padding:38px}.insight blockquote{font-size:11px}}
@media(max-width:720px){.sidebar{transform:translateX(-100%);transition:transform .2s;width:230px;box-shadow:12px 0 45px #23402811}.sidebar.open{transform:translateX(0)}.menu-overlay.open{display:block;position:fixed;inset:0;background:#21332440;z-index:19}.workspace{margin:0;width:100%}.mobile-menu{display:flex;padding:5px;color:#7a9270}.topbar{height:64px;padding:0 19px;gap:10px}.crumb{gap:8px;font-size:11px}.crumb>.icon{display:none}.top-actions{gap:8px}.pill{font-size:9px;padding:6px 9px}.content{padding:25px 19px}.welcome{margin-bottom:22px}.welcome h1{font-size:26px}.welcome p{font-size:11px;max-width:250px;line-height:1.8}.date-chip{display:none}.hero{padding:23px;min-height:219px}.hero-content{max-width:70%}.hero h2{font-size:23px}.hero p{font-size:10px}.hero-art{width:165px;right:-7%;top:25px;opacity:.6}.stats{gap:9px;margin:15px 0 25px}.stat{padding:15px 12px}.stat-head{font-size:9px;gap:6px}.stat-head svg{width:12px;height:12px}.stat-value b{font-size:25px}.stat-footer{font-size:8px;flex-wrap:wrap;gap:3px}.section-head h2{font-size:16px}.section-head small{font-size:9px;margin-left:5px}.lesson-row{padding:16px 14px;gap:10px}.lesson-text h3{font-size:12px}.row-state{font-size:8px}.lesson-row>.icon{display:none}.lesson-meta{gap:6px}.right-stack{grid-template-columns:1fr 1fr;gap:14px}.insight{grid-column:1/-1}.insight blockquote{margin:10px 0 7px;font-size:12px}.ring{width:116px;height:116px}.progress-legend{font-size:8px}.review-banner{padding:16px 13px;gap:11px}.review-banner h3{font-size:11px}.review-banner p{font-size:9px}.review-banner .text-link{font-size:9px}.review-icon{width:28px;height:28px;flex-shrink:0}.footer{font-size:8px;gap:10px}.footer span:last-child{letter-spacing:0;white-space:nowrap}.demo-banner{padding:9px 19px;font-size:9px}.auth-layout{grid-template-columns:1fr}.auth-art{min-height:260px;padding:90px 30px 35px;justify-content:start}.auth-art .brand{top:25px;left:18px;padding-bottom:0}.auth-copy h1{font-size:30px;margin:10px 0}.auth-copy .eyebrow{display:none}.auth-copy p{font-size:11px}.auth-form-wrap{padding:36px 25px}.kb-grid{grid-template-columns:1fr}.question-card{padding:22px 18px}.question-card h2{font-size:18px}.detail-meta small{width:100%;margin-top:8px}.prose{font-size:12px}.tool-row .search{margin-left:0;width:100%;order:-1}.memory-table th,.memory-table td{padding:14px;white-space:nowrap}.bookmark-row{padding:18px;align-items:flex-start}.bookmark-row .btn{font-size:10px;padding:8px 10px}.page-head h1{font-size:26px}.page-head p{line-height:1.9}.admin-form{padding:20px}.full-list .lesson-row{padding:19px 14px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}