:root{--bg:#f6f4ed;--paper:#fffefa;--ink:#263f39;--muted:#6b756e;--green:#204f47;--line:#dfE3d8;--lime:#e4edcb;--orange:#bd7046;--serif:Georgia,'Times New Roman',serif;--reading:18px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC',sans-serif;font-size:15px;line-height:1.65}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.55;cursor:wait}a{color:var(--green);text-underline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #b77b42;outline-offset:3px}button{border:0}h1,h2,h3,p{margin:0}h1{font-size:36px;line-height:1.3;font-weight:650;letter-spacing:-1px}h2{font-size:23px;line-height:1.45;font-weight:600}h3{font-size:17px;font-weight:600}small,.muted{color:var(--muted)}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:700;text-transform:uppercase;color:var(--muted)}.shell{display:grid;grid-template-columns:232px minmax(0,1fr);min-height:100vh}.sidebar{position:sticky;top:0;height:100dvh;border-right:1px solid var(--line);padding:34px 24px;display:flex;flex-direction:column;background:#eeefe5}.brand{display:flex;gap:12px;align-items:center;text-decoration:none;margin-bottom:46px}.brand img{width:38px;height:38px}.brand strong{display:block;font-family:var(--serif);font-size:24px;letter-spacing:-.7px}.brand small{font-size:10px;letter-spacing:2px}.nav{display:grid;gap:8px}.nav a{display:flex;align-items:center;gap:13px;text-decoration:none;padding:12px 16px;border-radius:9px;color:var(--muted)}.nav a.active{background:var(--green);color:#fff}.nav .symbol{font-size:18px;width:24px;text-align:center}.sidebar-foot{margin-top:auto;padding-top:35px}.goal-badge{padding:18px;background:var(--paper);border:1px solid var(--line);border-radius:12px}.goal-badge b{font-family:var(--serif);font-size:37px;font-weight:400}.goal-badge .muted{font-size:12px}.subtle{background:none;color:var(--muted);padding:8px 0;font-size:13px}.content{max-width:1400px;width:100%;margin:auto;padding:32px 48px 70px;min-width:0}.topbar{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:32px;font-size:12px;color:var(--muted)}.status-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#57836a;margin-right:7px}.page-title{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:26px}.page-title p{margin-top:10px;color:var(--muted)}.hero{background:#e7ecdc;border:1px solid #dce3d0;border-radius:18px;padding:34px 36px;display:grid;grid-template-columns:1fr 150px;gap:20px;position:relative;overflow:hidden}.hero h1{margin:14px 0}.hero p{max-width:590px;color:#52655b;font-size:14px}.hero-art{position:relative;align-self:center;justify-self:center;width:130px;height:160px;transform:rotate(9deg)}.book{position:absolute;inset:24px 4px 0 9px;border-radius:3px 12px 12px 3px;background:#42695b;box-shadow:7px 7px 0 #c2cdb6;border-left:7px solid #254e43}.book:before{content:'FIELD\A NOTES';white-space:pre;position:absolute;left:18px;top:26px;color:#e8e8d1;font:24px/1.1 Georgia,serif}.book:after{content:'';position:absolute;left:20px;bottom:25px;width:48px;height:3px;background:#d5b277}.sun{position:absolute;right:-14px;top:2px;width:47px;height:47px;background:#dfb273;border-radius:50%}.hero-bottom{display:flex;align-items:center;gap:15px;flex-wrap:wrap;margin-top:23px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;background:var(--green);color:#fff;padding:10px 19px;border-radius:8px;font-weight:550;text-decoration:none;font-size:14px}.btn.secondary{background:var(--paper);border:1px solid var(--line);color:var(--ink)}.btn.ghost{background:transparent;color:var(--green);border:1px solid #b9cbb9}.btn.small{padding:7px 13px;min-height:38px;font-size:13px}.segmented{display:flex;gap:3px;background:#f5f6ed;padding:4px;border-radius:9px;width:max-content;border:1px solid var(--line)}.segmented button{background:transparent;color:var(--muted);padding:6px 13px;border-radius:6px;font-size:12px}.segmented button.selected{background:var(--green);color:#fff}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:24px 0 32px}.stat{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:20px 24px}.stat b{font:32px var(--serif);margin-right:6px}.stat small{font-size:12px}.stat p{font-size:12px;color:var(--muted);margin-top:5px}.section-head{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:28px 0 15px}.section-head h2{font-size:20px}.section-head small{font-size:12px}.two-col{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(240px,1fr);gap:24px}.stack{display:grid;gap:12px;align-content:start}.task{display:flex;align-items:center;gap:18px;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:20px;text-decoration:none;transition:transform .15s,border-color .15s}.task:hover{transform:translateY(-2px);border-color:#9aaa99}.task-icon{width:44px;height:48px;display:grid;place-items:center;background:#e8ecde;border-radius:8px;font-family:var(--serif);font-size:23px;flex-shrink:0}.task-icon.writing{background:#f4e7d9;color:#996b3f}.task-icon.speaking{background:#e4e8ee;color:#526480}.task-icon.listening{background:#ebe2e9;color:#7d5d79}.task-body{min-width:0;flex:1}.task-body h3{font-size:15px;margin:5px 0}.task-body p{font-size:12px;color:var(--muted)}.task-meta{font-size:10px;letter-spacing:.8px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap}.arrow{font-size:20px;color:#6c7d6c}.note{border:1px solid var(--line);background:#eeefe5;border-radius:12px;padding:23px}.note h3{margin:9px 0}.note p{font-size:13px;color:#58665b}.note ol,.note ul{padding-left:20px;font-size:13px}.note li+li{margin-top:8px}.pill{display:inline-block;background:#e9eddf;color:#4b6958;font-size:11px;border-radius:5px;padding:3px 8px}.pill.pending{background:#faecd8;color:#986437}.empty{border:1px dashed #c4cdbe;padding:28px;border-radius:12px;color:var(--muted);font-size:14px}.filters{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0}.filters button{background:var(--paper);border:1px solid var(--line);padding:8px 16px;border-radius:20px;color:var(--muted)}.filters button.selected{background:var(--green);color:#fff;border-color:var(--green)}.library{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.library .task{align-items:flex-start}.search{max-width:360px}.field{display:grid;gap:6px;margin:15px 0}.field label{font-size:13px;color:var(--muted)}input:not([type=radio]):not([type=checkbox]),textarea,select{border:1px solid #cdd5c7;background:var(--paper);border-radius:8px;padding:11px 13px;color:var(--ink);width:100%;min-width:0}textarea{min-height:190px;resize:vertical;line-height:1.8}input[type=radio],input[type=checkbox]{accent-color:var(--green);width:17px;height:17px;flex-shrink:0}.lesson-head{margin:22px 0}.lesson-head h1{margin:12px 0;font-size:32px}.lesson-head p{color:var(--muted)}.exercise{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(310px,1fr);gap:28px;align-items:start}.paper{background:var(--paper);border:1px solid var(--line);padding:30px;border-radius:14px;min-width:0}.article{font-family:var(--serif);font-size:var(--reading);line-height:1.95;color:#2d3934}.article p+p{margin-top:22px}.article .para-label{font-family:Arial,sans-serif;font-size:11px;color:#8b978b;display:block;letter-spacing:2px;margin-bottom:6px}.toolbar{display:flex;gap:9px;justify-content:space-between;align-items:center;flex-wrap:wrap;margin-bottom:22px}.timer{font-variant-numeric:tabular-nums;font-size:14px}.questions{display:grid;gap:22px}.question{padding-bottom:22px;border-bottom:1px solid var(--line)}.question legend{font-size:14px;font-weight:550;margin-bottom:10px}.question fieldset{border:0;padding:0;margin:0;min-width:0}.option{display:flex;align-items:flex-start;gap:9px;padding:10px;margin-top:6px;border-radius:7px;border:1px solid var(--line);font-size:13px;cursor:pointer}.option:has(input:checked){border-color:#70947b;background:#edf2e4}.explanation{font-size:13px;padding:14px;background:#edf2e4;border-radius:8px;margin-top:12px}.explanation.wrong{background:#fbefdf}.explanation blockquote{margin:10px 0;padding-left:10px;border-left:2px solid #b5c1a7;font-family:var(--serif)}.actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:18px}.save-status{font-size:12px;color:var(--muted);margin-top:9px;min-height:20px}.writing-area{min-height:420px;font-family:var(--serif);font-size:18px}.checklist{display:grid;gap:9px;font-size:13px;margin:18px 0}.checklist label{display:flex;gap:9px;align-items:center}.steps{font-size:14px;padding-left:22px}.steps li{padding:5px 0}.vocab{margin-top:18px;padding-top:15px;border-top:1px solid var(--line)}.vocab strong{font-family:var(--serif);font-size:18px}.vocab p{font-size:13px;color:var(--muted)}details{margin:15px 0}summary{cursor:pointer;font-size:14px;font-weight:550;padding:5px 0}.prompt{white-space:pre-wrap;font-size:16px;line-height:1.85;margin:20px 0}.source{font-size:11px;color:var(--muted);margin-top:20px;border-top:1px solid var(--line);padding-top:12px}.chart{width:100%;height:auto;display:block;margin:20px 0}.data-table{width:100%;border-collapse:collapse;font-size:12px}.data-table th,.data-table td{border-bottom:1px solid var(--line);text-align:left;padding:8px}.feedback-card{margin-bottom:18px}.feedback-card h3{margin:10px 0}.feedback-card ul{padding-left:22px}.feedback-text{white-space:pre-wrap;font-size:14px}.feedback-card blockquote{margin:12px 0;padding:14px 18px;background:#eef0e6;border-left:3px solid #97aa87}.review-back{white-space:pre-wrap;font-size:14px;padding:18px;background:#edf0e4;border-radius:8px;margin-top:15px}.review-front{white-space:pre-wrap;font-size:16px;margin:13px 0}.week-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:8px}.day{padding:12px 8px;text-align:center;background:var(--paper);border:1px solid var(--line);border-radius:9px}.day strong{font-size:20px;display:block}.day small{font-size:10px}.day.current{border-color:#55785e;background:#e6edda}.phase{padding:20px;border-bottom:1px solid var(--line)}.phase b{display:block;margin-bottom:5px}.phase p{font-size:13px;color:var(--muted)}.notice{background:#fff2d9;border:1px solid #e8d6ae;border-radius:8px;font-size:13px;padding:13px 17px;margin:12px 0}.login-wrap{min-height:100dvh;display:grid;grid-template-columns:1.1fr 1fr}.login-story{background:#e4ead9;padding:70px;display:flex;flex-direction:column;justify-content:center}.login-story h1{font-size:48px;margin:30px 0 20px;line-height:1.4}.login-story p{color:#5c6e5c;max-width:400px}.login-story .brand{margin:0}.login-panel{padding:45px;display:grid;place-items:center}.login-form{width:100%;max-width:350px}.login-form h2{margin-bottom:8px}.login-form .btn{width:100%;margin-top:10px}.login-form small{display:block;margin-top:20px}.loading{display:grid;place-items:center;min-height:100dvh;color:var(--muted)}#toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);background:#263f39;color:#fff;border-radius:9px;padding:12px 20px;z-index:20;max-width:calc(100vw - 30px);font-size:13px;display:none}#toast.show{display:block}.hidden{display:none!important}.wide{grid-column:1/-1}.danger{color:#a23f33}.history-row{display:flex;justify-content:space-between;gap:15px;padding:12px 0;border-bottom:1px solid var(--line);font-size:13px}.wrap{overflow-wrap:anywhere}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(min-width:1550px){.content{padding:40px 65px}}@media(max-width:1150px){.sidebar{padding:25px 16px}.shell{grid-template-columns:195px minmax(0,1fr)}.content{padding:25px 28px 60px}.exercise{grid-template-columns:1fr}.two-col{grid-template-columns:1fr}.library{grid-template-columns:1fr}.hero{grid-template-columns:1fr 120px}.login-story{padding:40px}.login-story h1{font-size:38px}}
@media(max-width:700px){.shell{display:block}.sidebar{position:fixed;top:auto;bottom:0;height:auto;padding:7px 7px max(7px,env(safe-area-inset-bottom));width:100%;border-right:0;border-top:1px solid var(--line);z-index:10;background:#f4f4ed}.sidebar .brand,.sidebar-foot{display:none}.nav{display:grid;grid-template-columns:repeat(5,1fr);gap:3px}.nav a{padding:6px 2px;display:flex;flex-direction:column;gap:1px;font-size:10px;border-radius:7px}.nav .symbol{font-size:18px}.content{padding:20px 18px 105px}.topbar{margin-bottom:23px;font-size:10px}.hero{padding:25px;grid-template-columns:1fr}.hero-art{display:none}.hero h1,h1{font-size:29px}.hero p{font-size:13px}.hero-bottom{gap:12px}.stats{gap:8px;margin:16px 0 25px}.stat{padding:15px 12px}.stat b{font-size:26px}.stat small{font-size:10px}.stat p{font-size:10px}.task{padding:16px 13px;gap:12px}.task-body h3{font-size:14px}.task-body p{font-size:11px}.task-icon{width:35px;height:41px;font-size:21px}.paper{padding:21px 18px}.lesson-head h1{font-size:27px}.page-title{align-items:start;flex-direction:column}.section-head{align-items:start}.section-head small{font-size:10px}.article{line-height:1.9}.exercise{gap:17px}.writing-area{min-height:340px}.week-grid{grid-template-columns:repeat(7,minmax(0,1fr));gap:4px}.day{padding:8px 2px}.day strong{font-size:17px}.day small{font-size:9px}.login-wrap{display:block}.login-story{padding:32px 26px}.login-story h1{font-size:32px;margin:22px 0 13px}.login-story .brand strong{font-size:25px}.login-panel{padding:32px 26px 55px}.login-story p{font-size:13px}#toast{bottom:90px}.filters{gap:6px}.filters button{padding:7px 12px;font-size:12px}.history-row{font-size:12px}.search{max-width:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

.paper figure{margin:20px 0}.brand small{font-size:9px;letter-spacing:1.4px;white-space:nowrap}