:root{color:#1f2937;--primary:#7fb069;--primary-dark:#5a8f45;--surface:#fff;--border:#e5e7eb;--text:#1f2937;--muted:#6b7280;--sidebar:#17251c;background:#f4f6f8;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:#f4f6f8}a{color:inherit;text-decoration:none}button,input{font:inherit}.boot-screen{height:100%;color:var(--muted);justify-content:center;align-items:center;display:flex}.app-shell{grid-template-columns:248px 1fr;min-height:100vh;display:grid}.sidebar{background:var(--sidebar);color:#e5f1e6;flex-direction:column;height:100vh;padding:20px 14px;display:flex;position:sticky;top:0}.sidebar-brand{align-items:center;gap:12px;padding:8px 8px 24px;display:flex}.brand-mark{color:#fff;background:linear-gradient(135deg,#a6d38e,#5a8f45);border-radius:12px;justify-content:center;align-items:center;width:38px;height:38px;font-size:18px;font-weight:800;display:flex}.brand-mark.large{width:46px;height:46px;font-size:22px}.brand-title{color:#fff;font-weight:700}.brand-subtitle{color:#9bb3a0;font-size:12px}.sidebar-nav{flex-direction:column;flex:1;gap:6px;display:flex}.nav-item{color:#c8d8ca;border-radius:12px;align-items:center;gap:12px;padding:11px 12px;font-weight:600;transition:background .16s,color .16s;display:flex}.nav-item:hover{color:#fff;background:#ffffff14}.nav-item.active{color:#d7efc9;background:#a6d38e2e}.nav-icon{font-size:18px}.sidebar-footer{border-top:1px solid #ffffff1a;padding-top:14px}.sidebar-user{align-items:center;gap:10px;margin-bottom:10px;display:flex}.user-avatar{color:#17251c;background:#a6d38e;border-radius:50%;justify-content:center;align-items:center;width:34px;height:34px;font-weight:700;display:flex}.user-name{color:#fff;font-size:13px;font-weight:600}.user-plan{color:#9bb3a0;font-size:12px}.main-area{min-width:0}.topbar{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);z-index:5;background:#ffffffe6;justify-content:space-between;align-items:center;height:60px;padding:0 28px;display:flex;position:sticky;top:0}.topbar-title{font-weight:700}.topbar-user{color:var(--muted)}.page-container{max-width:1180px;margin:0 auto;padding:28px}.page{flex-direction:column;gap:22px;display:flex}.page-head h1{margin:0 0 6px}.page-head p{margin:0}.hero-card{background:linear-gradient(120deg,#fff,#eef7e9);border:1px solid #dfe9dc;border-radius:20px;justify-content:space-between;align-items:center;gap:24px;padding:26px 28px;display:flex}.hero-card h1{margin:0 0 8px;font-size:26px}.hero-card p{color:var(--muted);margin:0}.hero-stats{gap:12px;display:flex}.stat-pill{border:1px solid var(--border);background:#fff;border-radius:16px;flex-direction:column;min-width:100px;padding:14px 16px;display:flex}.stat-pill strong{color:var(--primary-dark);font-size:22px}.stat-pill span{color:var(--muted);font-size:12px}.card-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px;display:grid}.panel{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:22px}.panel h2{margin:0 0 10px;font-size:18px}.action-row{gap:10px;margin-top:14px;display:flex}.primary-btn{background:var(--primary);color:#fff;cursor:pointer;border:0;border-radius:12px;justify-content:center;align-items:center;gap:8px;padding:10px 18px;font-weight:700;display:inline-flex}.primary-btn:hover{background:var(--primary-dark)}.primary-btn:disabled{opacity:.6;cursor:not-allowed}.ghost-btn{border:1px solid var(--border);color:var(--text);cursor:pointer;background:#fff;border-radius:12px;justify-content:center;align-items:center;padding:10px 16px;display:inline-flex}.ghost-btn:hover{background:#f9fafb}.muted{color:var(--muted)}.plain-list{margin:0;padding:0;list-style:none}.plain-list li{border-bottom:1px solid #f0f0f0;justify-content:space-between;padding:10px 0;display:flex}.table-wrap{border:1px solid var(--border);background:#fff;border-radius:16px;overflow:auto}.data-table{border-collapse:collapse;width:100%;min-width:560px}.data-table th,.data-table td{text-align:left;border-bottom:1px solid #f0f0f0;padding:13px 16px}.data-table th{color:var(--muted);background:#fafbfc;font-size:13px}.data-table tr:last-child td{border-bottom:0}.empty-card{text-align:center;color:var(--muted);background:#fff;border:1px dashed #d1d5db;border-radius:16px;padding:40px}.login-page{background:linear-gradient(140deg,#f5f8f3,#e8f1e4);justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.login-card{border:1px solid var(--border);background:#fff;border-radius:22px;width:100%;max-width:430px;padding:28px;box-shadow:0 24px 60px #11182714}.login-head{text-align:center;margin-bottom:22px}.login-head .brand-mark{margin:0 auto 12px}.login-head h1{margin:0;font-size:24px}.login-head p{color:var(--muted);margin:6px 0 0}.mode-tabs{background:#f3f4f6;border-radius:12px;margin-bottom:20px;padding:4px;display:flex}.mode-tab{color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:9px;flex:1;padding:9px 0;font-weight:600}.mode-tab.active{color:var(--primary-dark);background:#fff;box-shadow:0 2px 8px #0000000d}.form-stack{flex-direction:column;gap:12px;margin-bottom:16px;display:flex}.inline-row{gap:10px;display:flex}.grow{flex:1}.text-input{border:1px solid var(--border);background:#fafbfc;border-radius:12px;outline:none;width:100%;padding:11px 13px}.text-input:focus{border-color:var(--primary);background:#fff}.form-error{color:#dc2626;margin-bottom:10px;font-size:13px}.form-success{color:var(--primary-dark);margin-bottom:10px;font-size:13px}.profile-panel{flex-direction:column;display:flex}.profile-row{border-bottom:1px solid #f0f0f0;justify-content:space-between;padding:12px 0;display:flex}.profile-row:last-child{border-bottom:0}.filter-bar{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.segmented{background:#eef1ee;border-radius:12px;padding:4px;display:inline-flex}.segment{color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:9px;padding:8px 18px;font-weight:600}.segment.active{color:var(--primary-dark);background:#fff;box-shadow:0 2px 8px #0000000d}.select-input{border:1px solid var(--border);color:var(--text);background:#fff;border-radius:11px;padding:9px 12px}.textbook-row{flex-wrap:wrap;gap:10px;display:flex}.textbook-chip{border:1px solid var(--border);color:var(--text);cursor:pointer;background:#fff;border-radius:999px;padding:9px 14px}.textbook-chip.active{background:var(--primary);border-color:var(--primary);color:#fff}.word-preview-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;display:grid}.word-preview-item{background:#fafbfa;border:1px solid #eef0ee;border-radius:12px;flex-direction:column;gap:4px;padding:12px;display:flex}.word-preview-item strong{font-size:16px}.dictation-page{align-items:center}.dictation-card{border:1px solid var(--border);background:#fff;border-radius:22px;flex-direction:column;align-items:center;gap:18px;width:100%;max-width:560px;padding:30px;display:flex}.play-button{background:var(--primary);color:#fff;cursor:pointer;border:0;border-radius:50%;width:72px;height:72px;font-size:24px}.dictation-input{text-align:center;max-width:320px;font-size:20px}.table-link{color:var(--primary-dark);font-weight:600}.table-link:hover{text-decoration:underline}.clickable{transition:border-color .16s,box-shadow .16s,transform .16s}.clickable:hover{border-color:var(--primary);transform:translateY(-1px);box-shadow:0 10px 26px #5b8f4514}.text-area{border:1px solid var(--border);resize:vertical;width:100%;min-height:100px;font:inherit;background:#fafbfc;border-radius:12px;outline:none;padding:11px 13px}.text-area:focus{border-color:var(--primary);background:#fff}