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.plan-badge.pro{background:linear-gradient(135deg,#007aff,#5856d6);color:#fff}.history-list{display:grid;gap:10px;max-height:55vh;overflow-y:auto}.history-item{padding:16px;border-radius:var(--radius-md);background:var(--bg-secondary);border:1px solid var(--separator);cursor:pointer}.history-item summary{display:flex;align-items:center;gap:12px;list-style:none;font-size:14px}.history-item summary::-webkit-details-marker{display:none}.history-part{padding:2px 8px;border-radius:var(--radius-full);font-size:11px;font-weight:700;background:var(--accent-light);color:var(--accent)}.history-detail{padding:10px 0 4px;font-size:13px;color:var(--text-secondary);line-height:1.5;overflow-wrap:break-word}.history-detail strong{color:var(--text-primary)}.history-detail small{color:var(--text-tertiary);display:block;margin-top:4px}.toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%);z-index:200;display:flex;align-items:center;gap:8px;padding:12px 22px;border-radius:var(--radius-full);background:var(--text-primary);color:var(--bg);box-shadow:var(--shadow-lg);font-size:14px;font-weight:500}.part3-toggle{margin:20px 0}.part3-toggle summary{display:flex;align-items:center;gap:8px;padding:14px 18px;border-radius:var(--radius-md);background:var(--bg-secondary);font-size:14px;font-weight:600;cursor:pointer;list-style:none}.part3-toggle summary::-webkit-details-marker{display:none}.part3-toggle .p3-badge{padding:3px 10px;border-radius:var(--radius-full);font-size:11px;font-weight:700;background:var(--accent-light);color:var(--accent)}.part3-toggle ol{padding:14px 18px 14px 36px}.part3-toggle li{font-size:14px;color:var(--text-secondary);line-height:1.6}.spin{animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}@media(max-width:640px){.page-header h1{font-size:28px}.evaluation-card h2{font-size:32px}.nav-bar{padding:0 14px}.section-tabs{padding:12px 14px 4px}.main-content{padding:0 14px 40px}.topic-card{padding:14px 16px}.topic-card .start-btn{opacity:1;transform:none;font-size:13px;padding:6px 14px}}