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#22c55e;border-left-color:#0000;border-radius:50%;width:19px;height:19px}.module-icon--headset:before{border:3px solid #22c55e;border-bottom:0;border-radius:16px 16px 0 0;width:18px;height:16px}.module-icon--paper:before,.module-icon--note:before{background:#60a5fa;border-radius:5px;width:18px;height:22px}.module-icon--chart:before{background:#22c55e;border-radius:3px;width:5px;height:18px;bottom:6px;left:7px;box-shadow:8px -5px #86efac,16px -10px #16a34a}.module-icon--search:before{border:3px solid #2563eb;border-radius:50%;width:14px;height:14px;top:5px;left:6px}.module-icon--search:after{background:#2563eb;border-radius:3px;width:10px;height:3px;bottom:7px;right:5px;transform:rotate(45deg)}.module-icon--puzzle:before{clip-path:polygon(0 0,42% 0,42% 22%,58% 22%,58% 0,100% 0,100% 42%,78% 42%,78% 58%,100% 58%,100% 100%,0 100%);background:linear-gradient(135deg,#60a5fa,#2563eb);border-radius:5px;width:18px;height:18px}.module-icon--globe:before{border:2px solid #2563eb;border-radius:50%;width:19px;height:19px}.stats-board{grid-template-columns:1fr 1fr;gap:24px;margin-top:20px;display:grid}.stats-group{box-shadow:var(--card-shadow-soft);background:#ffffffbd;border:1px solid #e2e8f0d1;border-radius:28px;padding:24px}.panel-title--compact{align-items:center;margin-bottom:14px}.mini-metrics--no-note{gap:14px}.mini-metric--green strong{color:var(--green-600)}.mini-metric--blue strong{color:var(--blue-600)}.portal-lower-grid{grid-template-columns:1.6fr .9fr;gap:24px;margin-top:24px;display:grid}.today-plan-card--premium{padding:26px}.study-task-flow--compact{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.plan-step{color:var(--slate-800);background:#ffffffb8;border:1px solid #e2e8f0d9;border-radius:20px;grid-template-columns:auto 1fr;gap:14px;padding:20px;display:grid}.plan-step span{width:34px;height:34px;color:var(--green-700);background:#dcfce7;border-radius:50%;place-items:center;font-weight:1000;display:grid}.plan-step 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em{color:var(--slate-500)}.power-icon{color:var(--blue-600);font-size:24px;font-weight:1000}.power-ring{background:conic-gradient(var(--green-600) 0 68%, #dbeafe 68%);border-radius:50%;flex:none;place-items:center;width:128px;height:128px;display:grid;position:relative}.power-ring:after{content:"";background:#fff;border-radius:50%;position:absolute;inset:12px}.power-ring strong,.power-ring span{z-index:1;position:relative}.power-ring strong{color:var(--green-700);align-self:end;font-size:32px}.power-ring span{color:var(--slate-500);align-self:start;font-weight:900}.auth-page--premium{background:radial-gradient(circle at 8% 12%,#bbf7d0ad,#0000 34%),radial-gradient(circle at 84% 20%,#bfdbfeb8,#0000 38%),linear-gradient(135deg,#f8fafc,#eff6ff);overflow:hidden}.auth-page--premium:before{opacity:.75}.auth-visual--premium{max-width:760px}.auth-title{letter-spacing:-3px}.auth-title 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14px;font-weight:900}.login-card--premium{border-radius:34px;box-shadow:0 32px 90px #0f172a24}.login-illustration--premium{background:linear-gradient(140deg,#dbeafeeb,#dcfce7d1);border-radius:28px;height:190px}.mini-book{width:150px;height:100px;color:var(--blue-600);background:linear-gradient(90deg,#eff6ff 49%,#fff 51%);border-radius:22px;justify-content:center;align-items:center;gap:20px;font-size:22px;font-weight:1000;display:flex;box-shadow:0 24px 44px #2563eb29,inset 0 0 0 1px #ffffffd6}.input-wrap__icon{width:auto;min-width:42px;color:var(--slate-500);padding:0 10px;font-size:12px;font-weight:900}.data-note,.progress-metric-live em,.status-strip em{display:none!important}@media (width<=1200px){.premium-hero,.portal-lower-grid,.stats-board{grid-template-columns:1fr}.hero-illustration{min-height:260px}}@media (width<=900px){.premium-hero 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#0f172a14;--reader-radius:12px;--reader-radius-sm:8px}.reader-dark{--reader-bg:#1a1a2e;--reader-surface:#232340;--reader-text:#e8e6e1;--reader-text-secondary:#94a3b8;--reader-border:#3a3a5c;--reader-shadow:0 12px 30px #0000004d}.reader-mobile-topnav{display:none}.reader-layout{background:var(--reader-bg);min-height:calc(100vh - 64px);color:var(--reader-text);gap:0;display:flex}.reader-sidebar{background:var(--reader-surface);border-right:1px solid var(--reader-border);flex-direction:column;flex-shrink:0;width:220px;padding:24px 0;display:flex}.reader-sidebar__title{text-transform:uppercase;letter-spacing:.05em;color:var(--reader-text-secondary);margin-bottom:12px;padding:0 20px;font-size:13px;font-weight:600}.reader-sidebar__item{color:var(--reader-text-secondary);cursor:pointer;border-right:3px solid #0000;align-items:center;gap:10px;padding:10px 20px;font-size:14px;text-decoration:none;transition:all .15s;display:flex}.reader-sidebar__item:hover{background:var(--reader-orange-light);color:var(--reader-orange)}.reader-sidebar__item--active{background:var(--reader-orange-light);color:var(--reader-orange);border-right-color:var(--reader-orange);font-weight:600}.reader-sidebar__group-label{text-transform:uppercase;letter-spacing:.08em;color:var(--reader-text-secondary);opacity:.6;padding:16px 20px 4px;font-size:11px;font-weight:600}.reader-main{flex:1;max-width:100%;padding:32px 40px;overflow-y:auto}.reader-header{margin-bottom:28px}.reader-header h2{color:var(--reader-text);margin:0 0 4px;font-size:26px;font-weight:700}.reader-header p{color:var(--reader-text-secondary);margin:0;font-size:14px}.category-tabs{background:var(--reader-surface);border-radius:var(--reader-radius-sm);border:1px solid var(--reader-border);gap:4px;width:fit-content;margin-bottom:24px;padding:4px;display:flex}.category-tab{cursor:pointer;color:var(--reader-text-secondary);background:0 0;border:none;border-radius:6px;padding:8px 20px;font-size:14px;font-weight:500;transition:all .15s}.category-tab:hover{color:var(--reader-text)}.category-tab--active{background:var(--reader-green);color:#fff}.reader-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin-bottom:32px;display:grid}.reader-card{background:var(--reader-surface);border-radius:var(--reader-radius);border:1px solid var(--reader-border);cursor:pointer;box-shadow:var(--reader-shadow);padding:20px;transition:all .2s}.reader-card:hover{transform:translateY(-2px);box-shadow:0 16px 40px #0f172a1f}.reader-card__type{text-transform:uppercase;letter-spacing:.05em;background:var(--reader-orange-light);color:var(--reader-orange);border-radius:20px;margin-bottom:10px;padding:2px 10px;font-size:11px;font-weight:600;display:inline-block}.reader-card__icon{margin-bottom:8px;font-size:32px}.reader-card__title{color:var(--reader-text);margin:0 0 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.3s;display:block}.reader-card__progress-text{color:var(--reader-text-secondary);white-space:nowrap;font-size:12px}.reader-card__btn{border-radius:var(--reader-radius-sm);cursor:pointer;background:var(--reader-green);color:#fff;border:none;padding:8px 20px;font-size:13px;font-weight:600;transition:all .15s}.reader-card__btn:hover{background:var(--reader-green-dark)}.reader-card__btn--outline{border:1px solid var(--reader-border);color:var(--reader-text);background:0 0}.section-title{color:var(--reader-text);margin:0 0 16px;font-size:18px;font-weight:600}.overview-hero{background:var(--reader-surface);border-radius:var(--reader-radius);border:1px solid var(--reader-border);box-shadow:var(--reader-shadow);margin-bottom:24px;padding:32px}.overview-hero__icon{margin-bottom:12px;font-size:48px}.overview-hero__title{margin:0 0 4px;font-size:28px;font-weight:700}.overview-hero__title-zh{color:var(--reader-text-secondary);margin:0 0 4px;font-size:16px}.overview-hero__author{color:var(--reader-text-secondary);margin:0 0 16px;font-size:14px}.overview-hero__summary{color:var(--reader-text);margin:0 0 20px;font-size:14px;line-height:1.7}.overview-hero__btn{border-radius:var(--reader-radius-sm);cursor:pointer;background:var(--reader-green);color:#fff;border:none;align-items:center;gap:8px;padding:12px 28px;font-size:15px;font-weight:600;transition:all .15s;display:inline-flex}.overview-hero__btn:hover{background:var(--reader-green-dark)}.toc-section{background:var(--reader-surface);border-radius:var(--reader-radius);border:1px solid var(--reader-border);box-shadow:var(--reader-shadow);padding:24px}.toc-section__title{margin:0 0 16px;font-size:16px;font-weight:600}.toc-item{border-radius:var(--reader-radius-sm);cursor:pointer;color:inherit;align-items:center;gap:12px;padding:10px 12px;text-decoration:none;transition:background .15s;display:flex}.toc-item:hover{background:var(--reader-orange-light)}.toc-item--active{background:var(--reader-orange-light);border-left:3px solid var(--reader-orange)}.toc-item__num{background:#e8e6e1;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;font-size:12px;font-weight:600;display:flex}.toc-item__info{flex:1}.toc-item__title{font-size:14px;font-weight:500}.toc-item__title-zh{color:var(--reader-text-secondary);font-size:12px}.toc-item__progress{text-align:right;width:40px;color:var(--reader-green);font-size:12px;font-weight:600}.reading-toolbar{border-bottom:1px solid var(--reader-border);flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:24px;padding:8px 0;display:flex}.reading-toolbar__title{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:80px;font-size:14px;font-weight:600;overflow:hidden}.reading-toolbar__btn{border:1px solid var(--reader-border);cursor:pointer;color:var(--reader-text-secondary);white-space:nowrap;background:0 0;border-radius:6px;align-items:center;gap:3px;padding:5px 10px;font-size:12px;transition:all .15s;display:flex}.reading-toolbar__btn:hover{border-color:var(--reader-orange);color:var(--reader-orange)}.reading-toolbar__btn--active{background:var(--reader-orange-light);border-color:var(--reader-orange);color:var(--reader-orange)}.reading-toolbar__segmented{border:1px solid var(--reader-border);border-radius:6px;flex-shrink:0;display:flex;overflow:hidden}.reading-toolbar__seg-btn{cursor:pointer;color:var(--reader-text-secondary);background:0 0;border:none;padding:5px 12px;font-size:12px;transition:all .15s}.reading-toolbar__seg-btn:first-child{border-right:1px solid var(--reader-border)}.reading-toolbar__seg-btn--active{background:var(--reader-orange);color:#fff}.reading-toolbar__title{text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:14px;font-weight:600;overflow:hidden}.reading-toolbar__progress{color:var(--reader-green);white-space:nowrap;font-size:12px;font-weight:600}.section-divider{border-top:2px solid var(--reader-border);margin:32px 0;padding-top:16px}.section-divider__title{margin:0 0 2px;font-size:16px;font-weight:700}.section-divider__title-zh{color:var(--reader-text-secondary);margin:0;font-size:13px}.bilingual-block-row{border-radius:var(--reader-radius-sm);gap:24px;margin-bottom:2px;padding:12px 16px;transition:background .15s;display:grid}.bilingual-block-row--bilingual{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.bilingual-block-row--single{grid-template-columns:minmax(0,1fr);max-width:800px;margin:0 auto}.bilingual-block-row--auto-highlight:hover,.bilingual-block-row--highlighted{background:#d36b450f}.bilingual-block-row__en{color:var(--reader-text);font-size:15px;line-height:1.8}.bilingual-block-row__zh{color:var(--reader-text-secondary);font-size:14px;line-height:1.7}.block-sentence:hover{background:#d36b4514}.word-token{cursor:pointer;border-bottom:1px solid #0000;border-radius:3px;padding:1px 0;transition:all .1s}.word-token:hover{border-bottom-color:var(--reader-orange);background:#d36b451f}.word-token--active-sentence{background:#d36b450f}.word-token--saved{border-bottom:2px dotted #22c55e}.reader-dark .word-token--saved{border-bottom-color:#4ade80}.bilingual-block-row__actions{opacity:0;gap:4px;margin-bottom:4px;transition:opacity .15s;display:flex}.bilingual-block-row:hover .bilingual-block-row__actions{opacity:1}.block-action-btn{cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px 4px;font-size:14px;line-height:1;transition:background .1s}.block-action-btn:hover{background:#d36b451a}.bilingual-block-row--highlighted{border-left:3px solid #ffb300;background:#ffc1071f!important}.reader-dark .bilingual-block-row--highlighted{background:#ffc10726!important}.search-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:5000;background:#00000080;justify-content:center;align-items:flex-start;padding-top:120px;display:flex;position:fixed;inset:0}.search-modal{background:var(--reader-surface);border-radius:16px;flex-direction:column;width:580px;max-width:90vw;max-height:70vh;display:flex;overflow:hidden;box-shadow:0 24px 60px #0003}.search-input-wrap{border-bottom:1px solid var(--reader-border);align-items:center;gap:10px;padding:16px 20px;display:flex}.search-input-wrap input{color:var(--reader-text);background:0 0;border:none;outline:none;flex:1;font-size:16px}.search-input-wrap input::placeholder{color:var(--reader-text-secondary)}.search-tabs{border-bottom:1px solid var(--reader-border);gap:0;padding:0 20px;display:flex}.search-tab{cursor:pointer;color:var(--reader-text-secondary);background:0 0;border:none;border-bottom:2px solid #0000;padding:10px 16px;font-size:13px;font-weight:500;transition:all .15s}.search-tab:hover{color:var(--reader-text)}.search-tab--active{color:var(--reader-orange);border-bottom-color:var(--reader-orange)}.search-results{flex:1;padding:8px 0;overflow-y:auto}.search-result-item{cursor:pointer;flex-direction:column;gap:2px;padding:10px 20px;transition:background .1s;display:flex}.search-result-item:hover{background:var(--reader-orange-light)}.search-result-item__type{color:var(--reader-text-secondary);text-transform:uppercase;font-size:11px;font-weight:600}.search-result-item__title{color:var(--reader-text);font-size:14px;font-weight:500}.search-result-item__match{color:var(--reader-text-secondary);font-size:12px}.search-result-item__match em{color:var(--reader-orange);font-style:normal;font-weight:600}.search-empty{text-align:center;color:var(--reader-text-secondary);padding:40px;font-size:14px}.search-key-hint{color:var(--reader-text-secondary);background:var(--reader-border);border-radius:4px;padding:2px 6px;font-size:11px}.collection-tabs{background:var(--reader-surface);border-radius:var(--reader-radius-sm);border:1px solid var(--reader-border);gap:4px;width:fit-content;margin-bottom:24px;padding:4px;display:flex}.collection-tab{cursor:pointer;color:var(--reader-text-secondary);background:0 0;border:none;border-radius:6px;padding:8px 20px;font-size:14px;font-weight:500;transition:all .15s}.collection-tab:hover{color:var(--reader-text)}.collection-tab--active{background:var(--reader-green);color:#fff}.collection-card{background:var(--reader-surface);border-radius:var(--reader-radius);border:1px solid var(--reader-border);box-shadow:var(--reader-shadow);margin-bottom:12px;padding:16px 20px;transition:all .15s}.collection-card:hover{border-color:var(--reader-orange)}.collection-card--target{border-color:var(--reader-orange);box-shadow:0 0 0 2px var(--reader-orange);animation:2s ease-out card-target-flash}@keyframes card-target-flash{0%{background:#d36b4526}50%{background:#d36b4514}to{background:0 0}}.collection-card__title{margin:0 0 4px;font-size:15px;font-weight:600}.collection-card__meta{color:var(--reader-text-secondary);font-size:12px}.settings-section{background:var(--reader-surface);border-radius:var(--reader-radius);border:1px solid var(--reader-border);box-shadow:var(--reader-shadow);margin-bottom:16px;padding:24px}.settings-section__title{margin:0 0 16px;font-size:16px;font-weight:600}.settings-row{border-bottom:1px solid var(--reader-border);justify-content:space-between;align-items:center;padding:12px 0;display:flex}.settings-row:last-child{border-bottom:none}.settings-row__label{font-size:14px;font-weight:500}.settings-row__desc{color:var(--reader-text-secondary);margin-top:2px;font-size:12px}.settings-select{border:1px solid var(--reader-border);background:var(--reader-surface);color:var(--reader-text);cursor:pointer;border-radius:6px;padding:6px 12px;font-size:13px}.settings-toggle{cursor:pointer;background:#cbd5e1;border:none;border-radius:11px;width:40px;height:22px;transition:background .2s;position:relative}.settings-toggle--on{background:var(--reader-green)}.settings-toggle:after{content:"";background:#fff;border-radius:50%;width:18px;height:18px;transition:transform .2s;position:absolute;top:2px;left:2px}.settings-toggle--on:after{transform:translate(18px)}.shortcut-grid{grid-template-columns:1fr 1fr;gap:8px;display:grid}.shortcut-item{align-items:center;gap:8px;padding:6px 0;font-size:13px;display:flex}.shortcut-key{background:var(--reader-border);border-radius:4px;padding:2px 8px;font-family:monospace;font-size:12px;font-weight:600}.reading-english-only .reader-block__zh,.reading-english-only .reading-column__title:last-child{display:none}@media (width<=768px){.reader-sidebar{display:none}.reader-main{padding:16px!important}.reader-grid{grid-template-columns:1fr}.bilingual-block-row--bilingual{grid-template-columns:minmax(0,1fr)}.reader-header h2{font-size:22px}.reading-toolbar{gap:4px}.reading-toolbar__btn{padding:4px 8px;font-size:11px}.reader-layout{flex-direction:column}.search-modal{width:95vw;margin:0 10px}.reader-mobile-topnav{background:var(--reader-surface);border-bottom:1px solid var(--reader-border);flex-shrink:0;gap:4px;padding:8px 12px;display:flex;overflow-x:auto}.reader-mobile-topnav a{white-space:nowrap;color:var(--reader-text-secondary);border-radius:6px;flex-shrink:0;padding:6px 12px;font-size:13px;text-decoration:none}}.reader-fab{z-index:100;flex-direction:column;gap:8px;display:flex;position:fixed;bottom:24px;right:24px}.reader-fab__btn{cursor:pointer;background:var(--reader-orange);color:#fff;border:none;border-radius:50%;justify-content:center;align-items:center;width:44px;height:44px;font-size:18px;transition:all .2s;display:flex;box-shadow:0 4px 12px #00000026}.reader-fab__btn:hover{transform:scale(1.1)}.reader-main::-webkit-scrollbar{width:6px}.search-results::-webkit-scrollbar{width:6px}.reader-main::-webkit-scrollbar-track{background:0 0}.search-results::-webkit-scrollbar-track{background:0 0}.reader-main::-webkit-scrollbar-thumb{background:var(--reader-border);border-radius:3px}.search-results::-webkit-scrollbar-thumb{background:var(--reader-border);border-radius:3px}.block-sentence{cursor:pointer;border-radius:3px;padding:1px 0;transition:background .12s}.block-sentence--active{background:#d36b451f;font-weight:500}.reader-dark .block-sentence--active{background:#d36b4533}.bilingual-block-row--search-target{border-left:3px solid var(--reader-orange);animation:2s ease-out search-flash}@keyframes search-flash{0%{background:#d36b4533}50%{background:#d36b451f}to{background:0 0}}.reader-dark .bilingual-block-row--search-target{animation:2s ease-out search-flash-dark}@keyframes search-flash-dark{0%{background:#d36b454d}50%{background:#d36b4526}to{background:0 0}}@media (width<=768px){.reader-main>div>div:last-child{z-index:100;border-left:none;border-top:1px solid var(--reader-border);border-radius:12px 12px 0 0;max-height:50vh;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -4px 20px #0000001a;width:100%!important}}