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dashed var(--border);width:100%;color:var(--text-secondary);background:0 0;padding:13px;font-size:14px}.add-btn:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-bg);border-style:solid}.picked-list{flex-direction:column;gap:8px;margin:0 0 14px;padding:0;list-style:none;display:flex}.picked-item{border-radius:var(--radius-sm);border:1px solid var(--border-soft);background:var(--accent-bg);align-items:center;gap:10px;padding:12px 10px 12px 18px;display:flex}.picked-title{flex:1;min-width:0;font-size:15px;line-height:1.45}.picked-title em{color:var(--warning);font-size:13.5px;font-style:normal}.picker,.picker-search{position:relative}.picker-search .field-input{padding-left:42px;padding-right:40px}.picker-search .search-icon{color:var(--text-tertiary);pointer-events:none;font-size:16px;position:absolute;top:50%;left:16px;transform:translateY(-50%)}.picker-search .search-clear{right:10px}.picker-results{z-index:5;border-radius:var(--radius-md);border:1px solid var(--border);background:var(--surface);max-height:290px;box-shadow:var(--shadow-hover);margin:0;padding:6px;list-style:none;position:absolute;top:calc(100% + 6px);left:0;right:0;overflow-y:auto}.picker-result{border-radius:var(--radius-sm);width:100%;color:var(--text);text-align:left;white-space:normal;background:0 0;align-items:center;gap:10px;padding:11px 12px;font-size:15px;font-weight:400;display:flex}.picker-result:hover{background:var(--accent-bg)}.picker-result:active{transform:none}.picker-result-title{flex:1;min-width:0;line-height:1.4}.picker-result .tag{flex-shrink:0}.picker-add{background:var(--accent);color:#fff;border-radius:50%;flex-shrink:0;place-items:center;width:22px;height:22px;font-size:15px;line-height:1;display:grid}.picker-empty{color:var(--text-tertiary);padding:14px 12px;font-size:13.5px}.check-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.check-item{border-radius:var(--radius-sm);background:var(--surface-muted);cursor:pointer;align-items:center;gap:12px;padding:14px 18px;font-size:15px;line-height:1.45;display:flex}.check-item:hover{background:var(--accent-bg)}.check-item input{width:17px;height:17px;accent-color:var(--accent);cursor:pointer;flex-shrink:0}.warn-list{background:var(--warning-bg);border:1px solid var(--warning-border);border-radius:var(--radius-md);color:var(--warning);flex-direction:column;gap:6px;margin:22px 0 0;padding:14px 16px;font-size:12.5px;line-height:1.55;list-style:none;display:flex}.intro{max-width:860px;margin:0 auto}.intro-hero{text-align:center;padding:84px 0 20px}.intro-quote{margin:0;padding:0}.intro-quote p{letter-spacing:-.03em;color:var(--text);text-wrap:balance;font-size:40px;font-style:italic;font-weight:600;line-height:1.25}.intro-quote cite{color:var(--text-tertiary);margin-top:18px;font-size:15px;font-style:normal;display:block}.intro-lead{max-width:620px;color:var(--text-secondary);margin:34px auto 0;font-size:17.5px;line-height:1.65}.intro-section{margin-top:72px}.intro-heading{letter-spacing:-.025em;font-size:27px}.intro-sub{color:var(--text-tertiary);margin-top:8px;font-size:15px}.intro-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px;margin-top:22px;display:grid}.intro-card{border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-card);padding:26px 24px}.intro-card h3{margin-bottom:10px;font-size:17px;line-height:1.4}.intro-card p{color:var(--text-secondary);font-size:15px}.intro-steps{margin:24px 0 0;padding:0;list-style:none}.intro-steps li{gap:18px;padding-bottom:26px;display:flex;position:relative}.intro-steps li:not(:last-child):before{content:"";background:var(--border-soft);border-radius:1px;width:2px;position:absolute;top:38px;bottom:4px;left:15px}.intro-steps li:last-child{padding-bottom:0}.intro-step-num{background:var(--accent);color:#fff;border-radius:50%;flex-shrink:0;place-items:center;width:32px;height:32px;font-size:14px;font-weight:600;display:grid}.intro-steps strong{letter-spacing:-.015em;padding-top:4px;font-size:16.5px;display:block}.intro-steps p{color:var(--text-secondary);margin-top:7px;font-size:15px}.intro-cta{border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-card);text-align:center;margin-top:76px;padding:44px 28px}.intro-cta p{letter-spacing:-.02em;margin-bottom:20px;font-size:20px;font-weight:600}.history-list{border:1px solid var(--border-soft);border-radius:var(--radius-md);max-height:320px;margin:14px 0 0;padding:0;list-style:none;overflow:hidden auto}.history-item{background:var(--surface);justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;display:flex}.history-item+.history-item{border-top:1px solid var(--border-soft)}.history-info{align-items:center;gap:10px;min-width:0;display:flex}.history-when{color:var(--text);font-size:13.5px}.history-who{color:var(--text-secondary);text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.history-item .btn-ghost{flex-shrink:0}.field-hint.is-wrong{color:var(--danger)}@media (width<=900px){.lesson{grid-template-columns:1fr;gap:20px}.lesson-side{position:static}.stepper{flex-flow:wrap;gap:6px}.step{gap:6px;padding:0;font-size:13px}.step:not(:last-child) .step-dot:after{display:none}.step-dot{width:20px;height:20px;font-size:11px}.edit-nav{flex-flow:wrap;margin-top:14px}.side-actions{flex-flow:wrap;align-items:center}.btn-block{width:auto}}@media (width<=640px){.page{padding:0 18px 64px}.app-header{padding:0 14px}.app-nav{gap:2px;margin-left:auto;position:static;transform:none}.nav-link{padding:7px 12px}.app-account{margin-left:4px}.account-name{max-width:80px;padding:7px 6px}.guide-question{font-size:16.5px}.guide-step{padding-left:38px}.intro-hero{padding:52px 0 12px}.intro-quote p{font-size:28px}.intro-section{margin-top:52px}.intro-heading{font-size:23px}.hero{padding:48px 0 28px}.hero h1{font-size:36px}.hero-quote{font-size:16px}.question-grid{grid-template-columns:1fr}.panel{padding:28px 22px}.panel-title{font-size:22px}.answer-bar,.btn-row{flex-direction:column}.field-row{grid-template-columns:1fr}.item-card{padding:16px 14px 2px}.history-item{flex-direction:column;align-items:flex-start}}