:root{--bg:#f4f6f0;--paper:#fff;--ink:#22382f;--muted:#68776e;--green:#244d40;--lime:#d9edaf;--line:#e3e8df;--warm:#f6efdf;--red:#9d4335;--radius:22px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,'Segoe UI','Microsoft YaHei',sans-serif;font-size:15px;line-height:1.6}button,input,select,textarea{font:inherit}button,a,input,select,textarea{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.5}a{color:var(--green)}:focus-visible{outline:3px solid #9dba6e;outline-offset:3px}.skip{position:fixed;top:-70px;left:20px;z-index:100;background:white;padding:12px}.skip:focus{top:10px}.boot{padding:20vh;text-align:center}.layout{display:grid;grid-template-columns:228px minmax(0,1fr);min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;border-right:1px solid var(--line);padding:30px 20px;display:flex;flex-direction:column;background:#eef2e9}.brand{display:flex;align-items:center;gap:11px;font-weight:750;font-size:20px;letter-spacing:1px}.brand img{width:40px;height:40px}.brand small{display:block;font-size:10px;letter-spacing:2px;font-weight:500;color:var(--muted)}.side-label{font-size:11px;letter-spacing:2px;color:var(--muted);margin:42px 16px 12px}.nav{display:flex;flex-direction:column;gap:7px}.nav button{background:none;border:0;color:var(--muted);padding:13px 16px;text-align:left;display:flex;gap:13px;align-items:center;border-radius:13px;font-weight:600}.nav button.active{background:var(--green);color:white}.nav button:hover:not(.active){background:#e3e9dc}.nav svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7}.side-note{margin-top:auto;border:1px solid #d4dec9;border-radius:17px;padding:16px;font-size:12px;color:var(--muted)}.side-note strong{display:block;color:var(--green);margin-bottom:6px}.side-bottom{font-size:11px;color:var(--muted);padding:22px 7px 0;display:flex;justify-content:space-between}.text-button{border:0;background:none;color:var(--green);padding:0;text-decoration:underline;text-underline-offset:3px}.workspace{min-width:0}.topbar{height:85px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:0 40px;background:#f9faf6}.breadcrumbs{font-size:13px;color:var(--muted)}.breadcrumbs strong{color:var(--ink);font-weight:500}.account{display:flex;align-items:center;gap:12px;font-size:12px}.avatar{height:35px;width:35px;display:grid;place-items:center;background:#e4eadb;border-radius:50%;font-weight:700}.connection{font-size:11px;display:flex;align-items:center;gap:6px;color:var(--muted)}.dot{width:6px;height:6px;border-radius:50%;background:#9aab8c}.dot.online{background:#3c8a60}.main{max-width:1400px;padding:32px 40px 55px;margin:auto}.eyebrow{font-size:10px;font-weight:650;letter-spacing:2.2px;color:var(--green);text-transform:uppercase}.page-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}h1,h2,h3,p{margin:0}h1{font-size:30px;line-height:1.3;font-weight:650;letter-spacing:-1px}h2{font-size:20px;font-weight:650}h3{font-size:16px;font-weight:650}.subtitle{color:var(--muted);font-size:13px;margin-top:8px}.btn{border:1px solid var(--line);border-radius:11px;padding:10px 17px;background:white;color:var(--ink);display:inline-flex;gap:9px;align-items:center;justify-content:center;font-size:13px;font-weight:600;text-decoration:none;min-height:42px}.btn:hover{background:#f0f3eb}.btn.primary{background:var(--green);color:white;border-color:var(--green)}.btn.primary:hover{background:#183e32}.btn.lime{background:var(--lime);color:#233d27;border-color:var(--lime)}.btn.soft{background:#eff3e8}.btn.small{padding:7px 11px;min-height:34px;font-size:12px}.btn.danger{color:var(--red)}.hero{position:relative;overflow:hidden;border-radius:var(--radius);background:var(--green);color:white;padding:32px 36px;display:grid;grid-template-columns:minmax(0,1fr) 200px;gap:20px;margin-bottom:22px;min-height:242px}.hero .eyebrow{color:#c4d7a4}.hero h2{font-size:29px;max-width:580px;line-height:1.55;margin:14px 0 10px;font-weight:550}.hero p{color:#cedbd0;font-size:13px;max-width:560px}.hero-actions{display:flex;gap:12px;margin-top:24px;flex-wrap:wrap}.hero-art{display:flex;align-items:center;justify-content:center;position:relative}.orb{width:152px;height:152px;border:1px solid #64816b;border-radius:50%;display:grid;place-items:center;transform:rotate(-12deg);outline:1px solid #476d58;outline-offset:16px}.orb div{background:#dbecb8;color:#244d40;border-radius:28px 28px 28px 4px;padding:13px 21px;font-size:36px;font-weight:650;transform:rotate(12deg);box-shadow:17px 18px 0 #ffffff0e}.orb:after{content:'一句一句，练成自己的。';position:absolute;bottom:-39px;font-size:10px;letter-spacing:2px;white-space:nowrap;transform:rotate(12deg);color:#d5e2c8}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:0 0 28px}.stat{background:white;border:1px solid var(--line);padding:18px 22px;border-radius:16px}.stat .label{font-size:12px;color:var(--muted)}.stat .number{font-size:27px;font-weight:650;margin-top:5px;letter-spacing:-1px}.stat .number small{font-size:11px;letter-spacing:0;font-weight:400;color:var(--muted);margin-left:6px}.section-head{display:flex;justify-content:space-between;align-items:center;margin:27px 0 16px;gap:15px}.section-head p{font-size:12px;color:var(--muted)}.two-col{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:20px}.panel{padding:24px;border:1px solid var(--line);border-radius:var(--radius);background:white;min-width:0}.panel.soft{background:#edf2e5}.day-tabs,.filters,.segmented{display:flex;gap:7px;flex-wrap:wrap}.day-tabs{margin:16px 0 18px}.day-tabs button,.filters button,.segmented button{background:white;border:1px solid var(--line);color:var(--muted);border-radius:9px;padding:7px 13px;font-size:12px}.day-tabs button.active,.filters button.active,.segmented button.active{background:var(--green);color:white;border-color:var(--green)}.task-row{display:flex;align-items:center;justify-content:space-between;gap:10px;border-top:1px solid #edf0e8;padding:13px 0}.task-row:first-of-type{border-top:0}.task-title{display:flex;align-items:center;gap:11px;font-size:13px}.task-number{width:26px;height:26px;border-radius:8px;background:#f0f3e9;color:#65815b;font-size:11px;display:grid;place-items:center;flex-shrink:0}.task-row small{font-size:10px;color:var(--muted)}.callout{border-left:3px solid #a8bf82;padding:11px 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16px;white-space:pre-wrap;overflow-wrap:anywhere}.user .bubble{background:#e2edcf;border-radius:16px 2px 16px 16px}.message.pending .bubble{border:1px dashed #c7a568;background:#fff9ee}.system-note{text-align:center;font-size:11px;color:var(--muted);margin:15px 0}.composer{border-top:1px solid var(--line);padding:18px;background:#fcfdf9}.composer textarea{resize:vertical;min-height:86px;max-height:220px;background:white;font-size:14px}.composer-footer{display:flex;align-items:center;justify-content:space-between;margin-top:10px;gap:10px}.composer-footer small{font-size:10px;color:var(--muted)}.coach-panel{padding:20px;border:1px solid var(--line);background:#eef3e7;border-radius:18px;margin-bottom:15px}.coach-panel h3{font-size:14px}.coach-panel p{font-size:12px;margin-top:9px;color:#596e50;white-space:pre-wrap}.coach-panel .btn{margin-top:14px;width:100%}.feedback-part{font-size:12px;border-top:1px solid #dce4d3;padding-top:11px;margin-top:11px}.feedback-part 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.brand{margin-bottom:30px}.footer-note{font-size:10px;color:var(--muted);text-align:center;margin-top:28px}dialog{border:1px solid var(--line);border-radius:23px;max-width:720px;width:calc(100% - 30px);padding:30px;color:var(--ink);max-height:88vh;box-shadow:0 25px 100px #193c3422}dialog::backdrop{background:#20382f66;backdrop-filter:blur(3px)}.dialog-head{display:flex;justify-content:space-between;gap:15px;align-items:flex-start;margin-bottom:22px}.dialog-body p{margin:12px 0;font-size:14px}.dialog-body ol,.dialog-body ul{padding-left:23px;font-size:14px}.example{background:#f4f6ee;padding:16px;border-radius:13px;margin:18px 0}.example p{font-size:13px}.example b{font-size:11px;color:var(--muted)}#toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);background:#233d30;color:white;padding:12px 20px;border-radius:12px;max-width:90vw;z-index:200;font-size:13px;opacity:0;pointer-events:none;transition:opacity .2s}#toast.show{opacity:1}.sync-warning{padding:13px 20px;background:#faedda;color:#7c5d2c;font-size:12px}.mobile-brand{display:none}.loading{display:inline-flex;gap:5px;align-items:center}.loading:before{content:'';width:12px;height:12px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.row-between{display:flex;align-items:center;justify-content:space-between;gap:12px}.check-row{display:flex;gap:9px;align-items:flex-start;font-size:12px;color:var(--muted);margin:12px 0}.check-row input{width:16px;height:16px;flex-shrink:0}.readonly-note{padding:10px 0;color:var(--muted);font-size:11px}.counter{font-variant-numeric:tabular-nums}.details-line{border-top:1px solid var(--line);padding:13px 0;font-size:12px}details summary{cursor:pointer;font-size:12px;color:var(--green)}details p{font-size:12px!important}.lesson-read{color:#54763d;font-size:11px}.custom-box{margin:18px 0}.custom-box summary{font-size:14px;font-weight:600}.mode-description{font-size:11px;color:var(--muted);margin-top:7px}.last-note{font-size:11px;color:var(--muted);margin-top:18px}.link-arrow{font-size:20px}.no-margin{margin:0}.ml-auto{margin-left:auto}
@media(min-width:1600px){.main{padding-top:40px}}@media(max-width:1150px){.layout{grid-template-columns:190px 1fr}.sidebar{padding:26px 14px}.main{padding:27px 25px 45px}.topbar{padding:0 25px}.cards{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:repeat(2,1fr)}.chat-grid{grid-template-columns:minmax(0,1fr) 255px}.hero{grid-template-columns:1fr 145px;padding:28px}.orb{width:115px;height:115px}.orb div{font-size:29px}.brand{font-size:17px}.two-col{grid-template-columns:1fr 1fr}.login-wrap{gap:40px}}
@media(max-width:800px){.layout{display:block}.sidebar{position:fixed;top:auto;bottom:0;width:100%;height:70px;padding:6px 5px calc(6px + env(safe-area-inset-bottom));border:0;border-top:1px solid var(--line);background:#f9faf6;z-index:20;display:block}.sidebar>.brand,.side-label,.side-note,.side-bottom{display:none}.nav{flex-direction:row;gap:0;justify-content:space-around}.nav button{flex-direction:column;padding:5px 7px;gap:3px;font-size:10px;border-radius:9px;min-width:46px}.nav svg{width:18px;height:18px}.topbar{height:65px;padding:0 18px}.breadcrumbs{display:none}.mobile-brand{display:flex;font-size:15px}.mobile-brand img{width:30px;height:30px}.account .avatar{display:none}.account{gap:8px}.main{padding:24px 17px 100px}.page-heading{align-items:flex-start}h1{font-size:25px}.hero{grid-template-columns:1fr;padding:25px;min-height:auto}.hero-art{display:none}.hero h2{font-size:25px}.stats{gap:9px;grid-template-columns:repeat(2,1fr);margin-bottom:23px}.stat{padding:14px 17px}.stat .number{font-size:24px}.two-col,.settings-layout{grid-template-columns:1fr}.panel{padding:20px}.chat-grid{grid-template-columns:1fr}.chat-side{display:grid;grid-template-columns:1fr 1fr;gap:12px}.chat-side .coach-panel{margin-bottom:0}.chat-log{max-height:55vh;min-height:240px;padding:18px}.chat-top{padding:15px}.composer{padding:14px}.category-grid{gap:10px}.category-card{padding:17px}.cards{gap:12px}.lesson-card,.scenario-card{padding:18px}.section-head{margin-top:23px}.section-head h2{font-size:18px}.form-row{grid-template-columns:1fr;gap:0}.login-wrap{display:flex;flex-direction:column;gap:15px;padding:30px 20px;min-height:100vh;justify-content:center}.login-art{padding:0;width:100%;max-width:420px}.login-art h1{font-size:30px;margin:10px 0}.login-art .brand,.login-art .pills{display:none}.login-art>p{font-size:12px}.login-panel{padding:25px;width:100%;max-width:420px}.login-panel .brand{margin-bottom:20px}dialog{padding:23px}#toast{bottom:85px}.footer-note{margin-top:20px}.connection{font-size:10px}}@media(max-width:450px){.cards{grid-template-columns:1fr}.chat-side{grid-template-columns:1fr}.page-heading .btn{padding:8px 10px;font-size:11px}.hero-actions .btn{padding:10px 13px}.hero h2{font-size:23px}.topbar .account>span{display:none}.search-line{flex-wrap:wrap}.search-line input{flex-basis:100%}.category-card p{min-height:51px}.hero{padding:23px}.composer-footer{align-items:flex-end}.composer-footer .actions{gap:6px}.composer-footer .btn{padding:9px 11px}.task-title{font-size:12px}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.nav button{font-size:9px;padding:6px}.chat-top .btn{padding:6px 8px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

.plan-scroll{max-height:420px;overflow:auto}
@media(max-width:800px){.row-between{flex-wrap:wrap}.coach-panel{overflow-wrap:anywhere}}

.two-col{align-items:start}.chat-count{white-space:nowrap;flex-shrink:0}.plan-scroll{max-height:445px;overflow-y:auto;padding-right:5px}.plan-scroll .task-row:first-child{border-top:0}.chat-top h2{line-height:1.7}