:root{color:#13201d;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;--surface:#fff;--surface-strong:#edf4f1;--ink:#13201d;--muted:#64736d;--line:#dce7e2;--teal:#0f766e;--coral:#dc5a2a;--green:#557a46;--blue:#1d4ed8;--rose:#be123c;--shadow:0 22px 60px #1b2a261f;background:#f4f7f5;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans TC,Microsoft JhengHei,sans-serif}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0}button{font:inherit}.app-shell{background:linear-gradient(#ffffffd6,#f4f7f5f5),#f4f7f5;min-height:100vh}.topbar{z-index:10;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#ffffffe0;border-bottom:1px solid #dce7e2db;justify-content:space-between;align-items:center;gap:16px;min-height:72px;padding:14px clamp(16px,3vw,40px);display:flex;position:sticky;top:0}.brand,.topbar-actions,.hero-metrics,.question-toolbar,.explanation-actions{align-items:center;display:flex}.brand{gap:12px}.brand-mark,.module-icon{flex:none;place-items:center;display:grid}.brand-mark{color:#fff;background:#13201d;border-radius:8px;width:42px;height:42px}.brand p,.brand span,.eyebrow,.section-heading span,.question-toolbar span,.hero-metrics span,.score-list span,.takeaway span,.mastery-header span,.recent-item small{color:var(--muted);margin:0;font-size:.78rem}.brand p{color:var(--ink);font-weight:800}.brand span{margin-top:2px;display:block}.icon-button{border:1px solid var(--line);width:42px;height:42px;color:var(--ink);cursor:pointer;background:#fff;border-radius:8px;place-items:center;transition:transform .16s,border-color .16s,background .16s;display:inline-grid}.icon-button:hover{background:#f7faf8;border-color:#a8bbb3;transform:translateY(-1px)}.page{width:min(1440px,100%);margin:0 auto;padding:clamp(16px,3vw,40px)}.hero-panel{min-height:clamp(280px,32vw,430px);box-shadow:var(--shadow);background:#182822;border-radius:8px;position:relative;overflow:hidden}.hero-image{background-image:linear-gradient(90deg,#0e1714d1,#0e171457 46%,#0e17141f),url(/human-nature-dashboard.png);background-position:50%;background-size:cover;position:absolute;inset:0}.hero-content{min-height:inherit;color:#fff;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:24px;padding:clamp(22px,4vw,48px);display:grid;position:relative}.hero-copy{max-width:660px}.eyebrow{color:#a8f0db;margin-bottom:12px;font-weight:800}.hero-copy h1{letter-spacing:0;max-width:12ch;margin:0;font-size:clamp(2.35rem,5vw,5.4rem);line-height:.98}.hero-copy p:last-child{color:#ffffffd6;max-width:36rem;margin:18px 0 0;font-size:clamp(1rem,1.8vw,1.2rem);line-height:1.7}.hero-metrics{flex-wrap:wrap;justify-content:flex-end;align-self:start;gap:10px}.hero-metrics div{-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#ffffff1f;border:1px solid #ffffff47;border-radius:8px;min-width:92px;padding:12px 14px}.hero-metrics span{color:#ffffffb8;display:block}.hero-metrics strong{color:#fff;margin-top:2px;font-size:1.45rem;display:block}.primary-action,.secondary-action{cursor:pointer;border-radius:8px;justify-content:center;align-items:center;gap:8px;min-height:44px;font-weight:800;transition:transform .16s,border-color .16s,background .16s;display:inline-flex}.primary-action{color:#fff;background:var(--coral);border:0;place-self:end;min-width:120px;padding:0 18px}.primary-action:hover,.secondary-action:hover{transform:translateY(-1px)}.primary-action.compact{min-width:104px}.secondary-action{border:1px solid var(--line);color:var(--ink);background:#fff;padding:0 16px}.workspace-grid{grid-template-columns:minmax(220px,280px) minmax(0,1fr) minmax(240px,300px);align-items:start;gap:18px;margin-top:18px;display:grid}.module-rail,.question-panel,.insight-panel{border:1px solid var(--line);background:#ffffffe6;border-radius:8px;box-shadow:0 14px 36px #1b2a2612}.module-rail,.insight-panel{padding:16px;position:sticky;top:92px}.section-heading{justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}.section-heading strong{color:var(--ink);font-size:.92rem}.module-list,.recent-list,.score-list{gap:10px;display:grid}.module-button{border:1px solid var(--line);width:100%;min-height:74px;color:var(--ink);text-align:left;cursor:pointer;background:#fff;border-radius:8px;grid-template-columns:auto minmax(0,1fr);gap:11px;padding:14px 12px;display:grid;position:relative;overflow:hidden}.module-button:before{content:"";background:var(--module-color);opacity:0;width:4px;position:absolute;inset:0 auto 0 0}.module-button.is-active{border-color:color-mix(in srgb, var(--module-color) 52%, white);background:color-mix(in srgb, var(--module-color) 8%, white)}.module-button.is-active:before{opacity:1}.module-icon{width:36px;height:36px;color:var(--module-color);background:color-mix(in srgb, var(--module-color) 11%, white);border-radius:8px}.module-text{min-width:0}.module-text strong,.recent-item strong{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;font-size:.96rem;display:block;overflow:hidden}.module-text small{color:var(--muted);margin-top:4px;font-size:.8rem;display:block}.module-progress{background:#dfe9e4;border-radius:999px;height:4px;position:absolute;bottom:10px;left:60px;right:12px;overflow:hidden}.module-progress:after{content:"";width:var(--progress);background:var(--module-color);height:100%;display:block}.question-panel{overflow:hidden}.question-toolbar{border-bottom:1px solid var(--line);justify-content:space-between;gap:12px;min-height:70px;padding:14px 18px}.question-toolbar div{text-align:center;min-width:0}.question-toolbar strong{color:var(--ink);font-size:.94rem;display:block}.question-card{padding:clamp(18px,3vw,34px)}.principle-pill{max-width:100%;color:var(--module-color);background:color-mix(in srgb, var(--module-color) 10%, white);border-radius:8px;align-items:center;gap:8px;padding:8px 10px;font-size:.88rem;font-weight:800;display:inline-flex}.principle-pill span{overflow-wrap:anywhere}.question-copy{margin-top:22px}.scenario{border-left:4px solid var(--module-color);color:#3d4d48;margin:0 0 18px;padding-left:14px;font-size:1.04rem;line-height:1.75}.question-copy h2{color:var(--ink);letter-spacing:0;margin:0;font-size:clamp(1.8rem,3vw,2.8rem);line-height:1.12}.question-copy p:last-child{color:#2e3e39;margin:12px 0 0;font-size:1.08rem;line-height:1.7}.choice-grid{gap:10px;margin-top:24px;display:grid}.choice-button{border:1px solid var(--line);width:100%;min-height:64px;color:var(--ink);text-align:left;cursor:pointer;background:#fff;border-radius:8px;grid-template-columns:38px minmax(0,1fr) auto;align-items:center;gap:12px;padding:12px 14px;transition:transform .16s,border-color .16s,background .16s,box-shadow .16s;display:grid}.choice-button:hover{border-color:color-mix(in srgb, var(--module-color) 45%, white);transform:translateY(-1px);box-shadow:0 10px 24px #1b2a2614}.choice-key{width:34px;height:34px;color:var(--module-color);background:color-mix(in srgb, var(--module-color) 10%, white);border-radius:8px;place-items:center;font-weight:900;display:grid}.choice-button>span:nth-child(2){overflow-wrap:anywhere;min-width:0;line-height:1.55}.choice-status{color:currentColor}.choice-button.is-correct{color:#075f45;background:#effaf4;border-color:#0f8f66}.choice-button.is-wrong{color:#9a271f;background:#fff1ef;border-color:#d14d42}.explanation-panel{border:1px solid var(--line);background:var(--surface-strong);border-radius:8px;margin-top:18px;padding:18px}.explanation-panel.is-success{background:#f0fbf4;border-color:#b6dbc5}.explanation-panel.is-review{background:#fff5f3;border-color:#f0c7bf}.explanation-title{color:var(--ink);align-items:center;gap:8px;display:flex}.explanation-panel p{color:#33443e;margin:12px 0 0;line-height:1.75}.takeaway{background:#ffffffc7;border-radius:8px;gap:4px;margin-top:16px;padding:14px;display:grid}.takeaway strong{line-height:1.62}.explanation-actions{flex-wrap:wrap;justify-content:flex-end;gap:10px;margin-top:16px}.mastery-header{color:var(--coral);align-items:center;gap:12px;display:flex}.mastery-header strong{color:var(--ink);font-size:1.9rem;line-height:1;display:block}.progress-track{background:#dde8e4;border-radius:999px;height:10px;margin:18px 0;overflow:hidden}.progress-track span{border-radius:inherit;background:linear-gradient(90deg, var(--teal), var(--coral));height:100%;display:block}.score-list{grid-template-columns:repeat(2,minmax(0,1fr))}.score-list div{border:1px solid var(--line);background:#fff;border-radius:8px;min-height:78px;padding:14px}.score-list strong{color:var(--ink);margin-top:8px;font-size:1.35rem;display:block}.recent-block{margin-top:22px}.recent-item{border:1px solid var(--line);text-align:left;cursor:pointer;background:#fff;border-radius:8px;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:10px;min-height:58px;padding:10px;display:grid}.recent-dot{background:var(--muted);border-radius:999px;width:10px;height:10px}.recent-dot.is-correct{background:#0f8f66}.recent-dot.is-review{background:var(--coral)}.recent-item small{margin-top:3px;display:block}.empty-state{min-height:58px;color:var(--muted);background:#f7faf8;border:1px dashed #b9c8c2;border-radius:8px;align-items:center;gap:8px;padding:12px;display:flex}@media (width<=1120px){.workspace-grid{grid-template-columns:minmax(220px,280px) minmax(0,1fr)}.insight-panel{grid-column:1/-1;position:static}}@media (width<=820px){.topbar{min-height:64px}.page{padding:14px}.hero-content{grid-template-columns:1fr;align-items:start}.hero-metrics{justify-content:flex-start}.primary-action{justify-self:start}.workspace-grid{grid-template-columns:1fr}.module-rail{position:static}.module-list{grid-template-columns:repeat(2,minmax(0,1fr))}.question-toolbar{padding-inline:12px}}@media (width<=560px){.brand span,.hero-metrics{display:none}.hero-panel{min-height:320px}.hero-image{background-position:58%}.hero-copy h1{max-width:10ch;font-size:2.45rem}.module-list,.score-list{grid-template-columns:1fr}.choice-button{grid-template-columns:34px minmax(0,1fr)}.choice-status{grid-column:1/-1;justify-self:end}.explanation-actions{justify-content:stretch}.secondary-action,.primary-action.compact{width:100%}}