:root{--bg:#f6f7f2;--panel:#fff;--ink:#17201c;--muted:#637069;--line:#dce2dc;--accent:#0f766e;--accent-strong:#115e59;--warn:#a16207;--danger:#b42318}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0;font-family:Arial,Microsoft YaHei,sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{align-items:center;gap:8px;display:inline-flex}.shell{grid-template-columns:280px minmax(0,1fr);min-height:100vh;display:grid}.sidebar{color:#f2f7f3;scrollbar-width:thin;scrollbar-color:#31544d transparent;background:#10201d;height:100vh;padding:22px 18px 18px;position:sticky;top:0;overflow-y:auto}.sidebarTop{gap:16px;margin-bottom:12px;display:grid}.sidebarNav{gap:12px;display:grid}.brand{gap:4px;display:grid}.brand strong{font-size:20px}.brand span{color:#a9bbb4;font-size:13px}.navGroup{border-top:1px solid #1e3934;gap:6px;padding-top:10px;display:grid}.navGroupTitle{color:#a6bbb4;letter-spacing:0;padding:0 10px 2px;font-size:12px;font-weight:700}.navLink{color:#e7efeb;border:1px solid #0000;border-radius:7px;align-items:center;gap:10px;min-height:40px;padding:8px 10px;display:flex}.navLink:hover{background:#19342f}.navLink.active{color:#f3fffb;background:#1b423c;border-color:#2d6158}.main{min-width:0;padding:26px;position:relative}.screenWatermark{z-index:3;pointer-events:none;color:#0f766e1c;-webkit-user-select:none;user-select:none;white-space:nowrap;place-items:center;font-size:22px;font-weight:700;display:grid;position:fixed;inset:0;transform:rotate(-22deg)}.authPage{place-items:center;min-height:100vh;padding:24px;display:grid}.authLayout{grid-template-columns:minmax(0,1fr) minmax(340px,420px);align-items:stretch;gap:16px;width:min(980px,100%);display:grid}.authBrandPanel{border:1px solid var(--line);background:linear-gradient(#fff 0%,#f4faf7 100%);border-radius:8px;align-content:start;gap:16px;padding:28px;display:grid}.authBrandPanel 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var(--line);text-align:center;background:#fbfcfb;border-radius:8px;place-items:center;gap:12px;min-height:286px;padding:14px;display:grid}.wechatDirectPanel{min-height:220px;color:var(--accent-strong)}.wechatDirectPanel strong,.wechatDirectPanel p{margin:0}.wechatLoginQr{border:1px solid var(--line);background:#fff;border-radius:8px;width:220px;height:220px;padding:8px}.wechatLoginQr.small{width:160px;height:160px}.wechatQrPlaceholder{width:220px;height:220px;color:var(--muted);background:#fff;border:1px dashed #b7c8c2;border-radius:8px;place-items:center;display:grid}.wechatBindPanel{border:1px solid var(--line);background:#fbfcfb;border-radius:8px;gap:12px;margin-top:14px;padding:12px;display:grid}.wechatBindPanel.bound{background:#f4fbf8;border-color:#b7dfd7;grid-template-columns:auto minmax(0,1fr);align-items:center}.wechatBindPanel strong,.wechatBindPanel p{margin:0}.wechatBindQrRow{grid-template-columns:160px minmax(0,1fr);align-items:center;gap:12px;display:grid}.pageHeader{justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:22px;display:flex}.pageHeader h1{margin:0;font-size:28px}.pageHeader p{color:var(--muted);max-width:780px;margin:8px 0 0;line-height:1.55}.grid{grid-template-columns:repeat(12,1fr);gap:14px;display:grid}.card{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:16px}.sidebarSessionCard{color:var(--ink);background:#fff;padding:16px}.sidebarSessionCard .muted{color:#4f5e57}.accountActions{grid-template-columns:1fr 1fr;gap:8px;display:grid}.accountActions form{grid-column:1/-1}.accountActions .button{justify-content:center;width:100%}.moduleCard{align-content:start;gap:10px;transition:border-color .14s,background-color .14s;display:grid}.moduleCard:hover{background:#fbfdfc;border-color:#a9cfc8}.moduleCard.compact{min-height:100%}.moduleCard h3,.moduleCard p{margin:0}.moduleIcon{width:38px;height:38px;color:var(--accent-strong);background:#eef7f4;border-radius:7px;justify-content:center;align-items:center;display:inline-flex}.sectionGap{margin-top:14px}.homeHeader{border-bottom:1px solid var(--line);padding-bottom:18px}.statusPanel{gap:10px;display:grid}.successPanel{background:#f0faf7;border-color:#9ad3c7}.accountOverview{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.accountSummaryCard{gap:8px;display:grid}.accountSummaryCard h2{margin:0;font-size:22px}.planCard{gap:18px;display:grid}.planFacts{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.planFacts div{border:1px solid var(--line);background:#fbfcfb;border-radius:8px;gap:6px;padding:12px;display:grid}.planFacts span{color:var(--muted);font-size:13px}.planFacts strong{overflow-wrap:anywhere}.compactFacts{grid-template-columns:repeat(3,minmax(0,1fr))}.entitlementAction{gap:14px;min-height:100%;display:grid}.entitlementAction h3{align-items:center;gap:8px;margin:0 0 8px;display:inline-flex}.entitlementPayButton{justify-content:center}.skuList{gap:12px;display:grid}.skuGroup{border:1px solid var(--line);background:#fbfcfb;border-radius:8px;gap:10px;padding:12px;display:grid}.skuGroupHeader{gap:4px;display:grid}.skuGroupHeader strong{font-size:17px}.skuGroupHeader span{color:var(--muted);font-size:13px;line-height:1.45}.skuGroupOptions{gap:8px;display:grid}.skuOption{text-align:left;border:1px solid var(--line);width:100%;min-height:54px;color:var(--ink);cursor:pointer;background:#fff;border-radius:7px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;padding:10px 12px;display:grid}.skuOption:hover{background:#f7fbf9;border-color:#a9cfc8}.skuOption.selected{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent);background:#ecfdf5}.skuOption span{gap:3px;min-width:0;display:grid}.skuOption strong,.skuOption small{overflow-wrap:anywhere}.skuOption 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var(--line);width:100%;min-height:38px;color:var(--ink);background:#fff;border-radius:7px;padding:8px 10px}.storyRetellingPage{gap:14px;display:grid}.storySearch{width:min(420px,100%);margin-bottom:12px}.storyLibrary{gap:10px;max-height:560px;padding-right:4px;display:grid;overflow:auto}.storyLibraryItem{border:1px solid var(--line);background:#fff;border-radius:8px;justify-content:space-between;align-items:center;gap:14px;padding:12px;display:flex}.storyLibraryItem strong,.storyLibraryItem span{display:block}.storyLibraryItem span{margin-top:3px}.tableWrap{border:1px solid var(--line);background:#fff;border-radius:8px;overflow:auto}table{border-collapse:collapse;width:100%;min-width:900px}th,td{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;padding:10px 12px;font-size:14px}th{background:#eef3ee;font-weight:700}.pill{border:1px solid var(--line);min-height:24px;color:var(--muted);background:#f9fbf8;border-radius:999px;align-items:center;padding:2px 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10px;font-size:22px;line-height:1.35}.opiImage{object-fit:contain;border:1px solid var(--line);background:#fdffe5;border-radius:8px;width:min(680px,100%);max-height:420px;margin-top:12px;display:block}.hintBox{background:#f4fbf8;border:1px solid #cfe5df;border-radius:8px;margin-top:12px;padding:12px;line-height:1.55}.hintBox p{margin:8px 0}.errorText{color:var(--danger);font-weight:700}.centerText{text-align:center}.sectionGapTight{margin-top:12px}.recordingStatus{color:var(--danger);align-items:center;gap:8px;font-weight:700;display:inline-flex}.recordingStatus span{background:var(--danger);border-radius:999px;width:10px;height:10px}.listItem{border:1px solid var(--line);background:#fff;border-radius:8px;justify-content:space-between;align-items:center;gap:12px;padding:12px;display:flex}.listItem.stacked{justify-content:stretch;display:grid}.listItem strong,.listItem span{display:block}.questionText{font-size:20px;line-height:1.45}.scenarioImage{border:1px solid var(--line);min-height:220px;color:var(--muted);background:#fdffe5;border-radius:8px;place-items:center;margin:10px 0;display:grid;overflow:hidden}.scenarioImage img{object-fit:contain;width:100%;height:100%;max-height:360px;display:block}.optionList{gap:10px;display:grid}.option{border:1px solid var(--line);text-align:left;cursor:pointer;background:#fff;border-radius:8px;padding:12px}.option.selected{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}.option.correct{background:#f0fdf4;border-color:#16a34a}.option.wrong{background:#fef2f2;border-color:#dc2626}.audio{width:100%;margin:8px 0}.audioBlock{gap:6px;display:grid}.runtimeNavCard{align-content:space-between;gap:8px;min-height:118px;display:grid}.runtimeNavCard strong{overflow-wrap:anywhere;font-size:22px;line-height:1.25}.runtimeAirportFilter{flex-wrap:wrap;align-items:center;gap:10px;margin:0 0 16px;display:flex}.runtimeAirportFilter label{color:var(--muted);font-size:16px;font-weight:700}.runtimeSampleHeader{justify-content:space-between;align-items:flex-start;gap:14px;display:flex}.runtimeSampleHeader h3{overflow-wrap:anywhere;margin:0 0 8px;font-size:18px;line-height:1.3}.commentBox{border-top:1px solid var(--line);gap:10px;padding-top:10px;display:grid}.commentList{gap:8px;display:grid}.commentItem{border:1px solid var(--line);background:#fbfcfa;border-radius:8px;padding:10px}.commentItem p{white-space:pre-wrap;overflow-wrap:anywhere;margin:0;line-height:1.55}.commentInput{border:1px solid var(--line);resize:vertical;width:100%;color:var(--ink);background:#fff;border-radius:8px;padding:10px}.speedControl{color:var(--muted);align-items:center;gap:6px;font-size:13px;display:inline-flex}.speedInput{border:1px solid var(--line);background:#fff;border-radius:7px;width:72px;min-height:32px;padding:4px 8px}.split{grid-template-columns:1fr 1fr;gap:14px;display:grid}.list{gap:10px;display:grid}.listItem{border:1px solid var(--line);background:#fff;border-radius:8px;gap:6px;padding:12px;display:grid}.resultItem{cursor:pointer;transition:border-color .15s,box-shadow .15s,transform .15s}.resultItem:hover{border-color:var(--accent);transform:translateY(-1px);box-shadow:0 3px 12px #0f766e1f}.resultItem.correct{border-left:6px solid #16a34a}.resultItem.wrong{border-left:6px solid #dc2626}.progressGrid{grid-template-columns:repeat(auto-fill,minmax(74px,1fr));gap:8px;display:grid}.sentenceOverviewGrid{grid-template-columns:repeat(auto-fill,minmax(54px,1fr));gap:8px;display:grid}.inlineDetailLink{border:1px solid var(--line);background:#f9fbf8;border-radius:7px;gap:4px;padding:8px;display:grid}.progressButton{border:1px solid var(--line);min-height:36px;color:var(--ink);cursor:pointer;background:#eef1ee;border-radius:7px;justify-content:center;padding:6px 8px}.progressButton.correct{color:#166534;background:#dcfce7;border-color:#86efac}.progressButton.wrong{color:#991b1b;background:#fee2e2;border-color:#fecaca}.progressButton.current{box-shadow:inset 0 0 0 2px var(--accent)}.sidebarSessionCard{gap:12px;display:grid}.userMeta{gap:6px;display:grid}.userTitleRow{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;display:flex}.plainList{gap:8px;margin:0;padding-left:20px;display:grid}.errorText{color:var(--danger);margin-top:14px}.actionRow{flex-wrap:wrap;gap:10px;margin-top:16px;display:flex}.sidebarNote{color:#dbeae5;background:#17332e;border-color:#244a43}.sidebarFooter{color:#dbeae5;background:#17332e;border:1px solid #244a43;border-radius:8px;align-items:flex-start;gap:10px;margin-top:14px;padding:14px;font-size:13px;line-height:1.5;display:flex}.sectionBlock{gap:14px;margin-bottom:18px;display:grid}.sectionHeader{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:12px;display:flex}.sectionHeader h2{margin:0;font-size:20px}.sectionHeader p{color:var(--muted);margin:0}.sectionKicker{color:var(--accent-strong);letter-spacing:0;text-transform:none;align-items:center;margin-bottom:4px;font-size:12px;font-weight:700;display:inline-flex}.featureModuleCard{background:#f3fbf8;border-color:#9ad3c7;grid-template-columns:auto minmax(0,1fr);align-items:start;min-height:118px}@media (max-width:900px){.shell,.authLayout{grid-template-columns:1fr}.sidebar{height:auto;position:static}.span3,.span4,.span5,.span6,.span7,.span8,.span12{grid-column:span 12}.accountOverview,.planFacts,.compactFacts,.split,.questionHeader,.categoryGrid,.nativePayBody{grid-template-columns:1fr}.headerStats{justify-items:start}.pageHeader{flex-direction:column}.authBrandPanel h1{font-size:28px}.actionRow{flex-direction:column}.actionRow .button{justify-content:center;width:100%}.scoreBoard{flex-direction:column;align-items:flex-start}.scoreBoardStats{justify-content:flex-start}}