.v4-head{align-items:flex-start}.v4-head-progress{min-width:230px;padding-top:10px}.v4-head-progress span{display:block;font-size:13px;font-weight:700;color:#596070;margin-bottom:7px}.v4-head-progress i{display:block;height:8px;border-radius:99px;background:#e8ebf1;overflow:hidden}.v4-head-progress b{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#6658df,#4e8be8)}
.v4-layout{display:grid;grid-template-columns:250px minmax(0,1fr) 250px;gap:16px;align-items:start;margin-top:16px}.v4-chapters,.v4-syllabus{position:sticky;top:82px;max-height:calc(100vh - 100px);overflow:auto}.v4-main{min-width:0;display:flex;flex-direction:column;gap:14px}.v4-board{overflow:hidden;background:#fbfbfa}.v4-board-head{display:flex;justify-content:space-between;gap:16px;padding:18px 20px 10px;align-items:flex-start}.v4-board-head h3{margin:5px 0 8px;font-size:24px}.v4-chapter-no{font-size:12px;font-weight:800;color:#586070;background:#eef1f5;border-radius:7px;padding:5px 9px}.v4-chips{display:flex;gap:7px;flex-wrap:wrap}.v4-chips span{font-size:11px;font-weight:700;color:#687180;border:1px solid #dfe3e9;border-radius:99px;padding:4px 8px;background:#fff}.v4-section-ring{display:flex;gap:7px;max-width:54%;overflow:auto;padding:2px 1px 8px;scrollbar-width:thin}.v4-section-ring button{border:1px solid #dfe3e9;background:#fff;border-radius:12px;padding:7px 9px;min-width:84px;text-align:left;display:grid;grid-template-columns:22px 1fr;gap:1px 6px;align-items:center;color:#555f6d}.v4-section-ring b{grid-row:1/3;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:#edf0f5;font-size:11px}.v4-section-ring span{font-size:11px;font-weight:800;line-height:1.15}.v4-section-ring small{font-size:10px;color:#8a919d}.v4-section-ring button.active{border-color:#7c72df;box-shadow:0 0 0 2px rgba(103,89,220,.09)}.v4-section-ring button.active b{background:#6658df;color:#fff}
.v4-stage{position:relative;min-height:650px;margin:4px 14px 0;border-radius:20px;background-color:#f8f8f6;background-image:linear-gradient(rgba(71,79,92,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(71,79,92,.035) 1px,transparent 1px);background-size:24px 24px;border:1px solid #e7e8e6;overflow:hidden}.v4-hero{position:absolute;left:50%;top:47%;transform:translate(-50%,-50%);width:38%;min-width:260px;max-width:410px;background:rgba(255,255,255,.94);border:1px solid #dfe3e6;border-radius:20px;padding:12px 12px 8px;box-shadow:0 14px 34px rgba(49,57,69,.08);z-index:2}.v4-hero-title{text-align:center;margin-bottom:2px}.v4-hero-title strong{display:block;font-size:16px}.v4-hero-title small{font-size:10px;color:#747d89}.v4-hero-svg{display:block;width:100%;height:auto}.v4-hero-svg text{font-family:-apple-system,BlinkMacSystemFont,"PingFang TC","Noto Sans TC",sans-serif;font-size:13px;fill:#4d5560;font-weight:650}.v4-flow-lines{position:absolute;inset:0;width:100%;height:100%;z-index:1;pointer-events:none}.v4-flow-lines path{fill:none;stroke:#aab3bd;stroke-width:.42;vector-effect:non-scaling-stroke}.v4-flow-lines path.loop{stroke:#9b89c8;stroke-dasharray:1.4 1.2}.v4-flow-lines marker path{fill:#8c96a1;stroke:none}
.v4-flow-node{position:absolute;left:var(--x);top:var(--y);transform:translate(-50%,-50%);width:150px;min-height:112px;border:2px solid #d9dde3;background:#fff;border-radius:17px;padding:10px 9px 8px;box-shadow:0 8px 20px rgba(51,59,70,.08);z-index:3;text-align:left;color:#333b45;transition:.18s ease}.v4-flow-node:hover{transform:translate(-50%,-50%) translateY(-2px);box-shadow:0 11px 25px rgba(51,59,70,.12)}.v4-flow-node.selected{border-color:var(--node-color);box-shadow:0 0 0 3px color-mix(in srgb,var(--node-color) 15%,transparent),0 12px 26px rgba(51,59,70,.12)}.v4-flow-node.done{border-color:#6ca47d}.v4-flow-node.hinted:not(.done){border-color:#b28bc4}.v4-node-no{position:absolute;left:-10px;top:-10px;width:29px;height:29px;border-radius:50%;background:var(--node-color);color:#fff;display:grid;place-items:center;font-size:12px;font-weight:900;box-shadow:0 3px 8px rgba(0,0,0,.14)}.v4-node-graphic{display:block;width:60px;height:43px;margin:0 auto 3px}.v4-node-graphic svg{width:100%;height:100%;display:block}.v4-node-q{display:block;text-align:center;font-size:12px;font-weight:850;line-height:1.35;min-height:33px}.v4-node-state{display:block;margin-top:5px;text-align:center;font-size:9px;font-weight:700;color:#89919d}.v4-flow-node.done .v4-node-state{color:#47835b}.v4-link-strip{display:flex;align-items:center;justify-content:center;gap:14px;padding:12px 18px 16px}.v4-link-strip>div{display:flex;flex-direction:column;min-width:130px}.v4-link-strip span{font-size:10px;color:#89919d}.v4-link-strip strong{font-size:12px}.v4-link-strip>b{color:#8b93a0}
.v4-detail{overflow:hidden}.v4-detail-flow{display:grid;grid-template-columns:1fr auto 1fr;gap:8px;align-items:center;border-bottom:1px solid #eceef1;padding:10px 14px}.v4-detail-flow button{border:0;background:transparent;color:#707986;font-size:11px;font-weight:700}.v4-detail-flow button:first-child{text-align:left}.v4-detail-flow button:last-child{text-align:right}.v4-detail-flow span{font-size:10px;color:#9aa1ab;font-weight:800}.v4-detail-body{display:grid;grid-template-columns:118px 1fr 118px;gap:17px;align-items:center;padding:18px}.v4-detail-visual{display:flex;flex-direction:column;align-items:center;gap:6px}.v4-detail-visual svg{width:86px;height:auto}.v4-detail-visual span{font-size:10px;color:#7f8793;text-align:center}.v4-detail-main h3{font-size:19px;margin:5px 0 11px;line-height:1.45}.v4-detail-main .mind-answer-v2{width:100%}.v4-detail-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:10px;flex-wrap:wrap}.v4-hint{margin-top:10px;border-radius:11px;padding:10px 12px;background:#fbf7e8;border:1px solid #eee2ad;display:flex;gap:8px;align-items:flex-start}.v4-hint strong{font-size:10px;color:#95752c;white-space:nowrap}.v4-hint span{font-size:11px;color:#675b3c;line-height:1.45}.v4-related{border-left:1px solid #eceef1;padding-left:16px;text-align:center;display:flex;flex-direction:column}.v4-related strong{font-size:30px}.v4-related span{font-size:11px;font-weight:800}.v4-related small{font-size:9px;color:#9198a3;margin-top:5px;line-height:1.35}.v4-chapter-footer{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;padding:14px}.v4-chapter-footer>div{text-align:center;display:flex;flex-direction:column}.v4-chapter-footer strong{font-size:12px}.v4-chapter-footer span{font-size:10px;color:#8a929e;margin-top:2px}
.v4-syllabus{padding:12px}.v4-syllabus-head{padding:6px 6px 10px;border-bottom:1px solid #ebedf0;margin-bottom:7px}.v4-syllabus-head strong{display:block;font-size:14px}.v4-syllabus-head small{color:#89919c;font-size:10px}.v4-subject-progress{width:100%;border:1px solid transparent;background:transparent;border-radius:12px;padding:7px;display:grid;grid-template-columns:34px 1fr auto;gap:8px;align-items:center;text-align:left}.v4-subject-progress:hover,.v4-subject-progress.active{background:var(--subject-bg);border-color:color-mix(in srgb,var(--subject-color) 32%,#dfe3e8)}.v4-subject-symbol{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;background:var(--subject-bg);color:var(--subject-color);font-weight:900}.v4-subject-progress>span:nth-child(2){min-width:0}.v4-subject-progress strong{display:block;font-size:11px}.v4-subject-progress small{display:block;font-size:9px;color:#939aa4;margin-top:1px}.v4-subject-progress i{display:block;height:4px;background:#e9ebef;border-radius:99px;margin-top:5px;overflow:hidden}.v4-subject-progress i b{display:block;height:100%;background:var(--subject-color);border-radius:99px}.v4-subject-progress em{font-size:9px;font-style:normal;color:#707986}.v4-syllabus-foot{font-size:9px;color:#858d98;line-height:1.45;padding:9px 7px 2px;border-top:1px solid #ebedf0;margin-top:7px}
@media(max-width:1250px){.v4-layout{grid-template-columns:220px minmax(0,1fr)}.v4-syllabus{grid-column:1/-1;position:static;max-height:none;display:grid;grid-template-columns:repeat(5,1fr);gap:5px}.v4-syllabus-head,.v4-syllabus-foot{grid-column:1/-1}.v4-stage{min-height:620px}.v4-flow-node{width:137px}.v4-hero{width:36%}}
@media(max-width:900px){.v4-head{display:block}.v4-head-progress{min-width:0;width:100%;max-width:320px}.v4-layout{display:block}.v4-chapters{position:static;max-height:none;display:flex;overflow-x:auto;gap:7px;padding:9px;margin-bottom:12px}.v4-chapters .mind-side-head{min-width:130px}.v4-chapters .mind-chapter-btn{min-width:210px}.v4-board-head{display:block}.v4-section-ring{max-width:none;margin-top:10px}.v4-stage{min-height:710px;overflow-x:auto;overflow-y:hidden;margin-left:6px;margin-right:6px}.v4-hero{width:330px;min-width:330px}.v4-flow-node{width:132px;min-height:105px}.v4-detail-body{grid-template-columns:88px 1fr}.v4-related{grid-column:1/-1;border-left:0;border-top:1px solid #eceef1;padding:10px 0 0;flex-direction:row;align-items:center;justify-content:center;gap:9px}.v4-related strong{font-size:21px}.v4-related small{max-width:180px;margin:0}.v4-syllabus{display:grid;grid-template-columns:repeat(2,1fr);margin-top:12px}.v4-chapter-footer{grid-template-columns:1fr 1fr}.v4-chapter-footer>div{grid-column:1/-1;grid-row:1}.v4-link-strip{justify-content:flex-start;overflow:auto}.v4-link-strip>div{min-width:110px}}
@media(max-width:520px){.v4-stage{min-height:690px}.v4-hero{width:260px;min-width:260px;top:48%}.v4-flow-node{width:112px;min-height:98px;padding:8px 6px}.v4-node-graphic{width:48px;height:35px}.v4-node-q{font-size:10px;min-height:28px}.v4-node-state{font-size:8px}.v4-node-no{width:25px;height:25px;font-size:10px}.v4-detail-body{display:block}.v4-detail-visual{flex-direction:row;justify-content:flex-start;margin-bottom:9px}.v4-detail-visual svg{width:60px}.v4-detail-main h3{font-size:16px}.v4-detail-actions{justify-content:stretch}.v4-detail-actions button{flex:1}.v4-syllabus{grid-template-columns:1fr}.v4-board-head h3{font-size:20px}.v4-section-ring button{min-width:76px}.v4-link-strip button{white-space:nowrap}.v4-chapter-footer button{font-size:11px}.v4-hero-svg text{font-size:11px}}