@import"https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700;900&family=ZCOOL+XiaoWei&display=swap";:root{--bg0: #e8f0ea;--bg1: #f7faf7;--ink: #14241c;--muted: #5a6b61;--line: rgba(20, 36, 28, .12);--card: rgba(255, 255, 255, .78);--accent: #1f6b4a;--ok: #1b7a45;--bad: #b42318;--shadow: 0 18px 40px rgba(20, 36, 28, .08);--radius: 18px;--safe-bottom: env(safe-area-inset-bottom, 0px);font-family:Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif;color:var(--ink);background:var(--bg0);line-height:1.55}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{background:radial-gradient(circle at 12% 8%,rgba(31,107,74,.16),transparent 42%),radial-gradient(circle at 88% 0%,rgba(29,79,145,.12),transparent 36%),linear-gradient(160deg,#e7f2ea,#f4f7f2 48%,#eef3f8);background-attachment:fixed}button,input{font:inherit}a{color:inherit}.page{width:min(920px,100%);margin:0 auto;padding:24px 18px calc(28px + var(--safe-bottom))}.home-hero,.sub-hero{padding:18px 4px 10px}.brand{margin:0 0 8px;font-family:ZCOOL XiaoWei,Noto Sans SC,serif;font-size:clamp(2rem,6vw,2.8rem);letter-spacing:.04em;color:#0f3d2e}.home-hero h1,.sub-hero h1{margin:0 0 10px;font-size:clamp(1.15rem,3.4vw,1.45rem);font-weight:700}.lede{margin:0;color:var(--muted);max-width:36em}.lede strong{color:var(--ink)}.panel{margin-top:18px;padding:18px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:var(--shadow)}.panel h2{margin:0 0 12px;font-size:1.05rem}.hint{margin:0 0 14px;color:var(--muted);font-size:.92rem}.module-grid{display:grid;gap:12px}@media(min-width:720px){.module-grid{grid-template-columns:repeat(3,1fr)}}.module-card{display:flex;flex-direction:column;align-items:flex-start;gap:6px;text-align:left;padding:16px;border-radius:14px;border:1px solid color-mix(in srgb,var(--accent) 28%,transparent);background:linear-gradient(180deg,color-mix(in srgb,var(--accent) 10%,white),#fff);cursor:pointer;transition:transform .18s ease,box-shadow .18s ease}.module-card:hover{transform:translateY(-2px);box-shadow:0 12px 28px color-mix(in srgb,var(--accent) 18%,transparent)}.module-name{font-weight:700;color:var(--accent)}.module-desc{color:var(--muted);font-size:.86rem}.module-count{margin-top:6px;font-size:.85rem;color:var(--ink);opacity:.75}.set-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px}.set-row input[type=range]{flex:1;min-width:140px}.set-value{min-width:2ch;font-weight:700}.wrong-entry{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}.home-foot{margin-top:22px;text-align:center;color:var(--muted);font-size:.82rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 16px;border-radius:999px;border:1px solid transparent;text-decoration:none;cursor:pointer;transition:opacity .15s ease,transform .15s ease}.btn:disabled{opacity:.45;cursor:not-allowed}.btn.primary{background:var(--accent, #1f6b4a);color:#fff}.btn.ghost{background:transparent;border-color:var(--line);color:var(--ink)}.btn:hover:not(:disabled){transform:translateY(-1px)}.quiz{padding-bottom:calc(96px + var(--safe-bottom))}.quiz-top{position:sticky;top:0;z-index:10;margin:-24px -18px 0;padding:14px 18px 12px;background:color-mix(in srgb,#f4f7f2 88%,white);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.back-link{text-decoration:none;color:var(--muted);font-size:.9rem}.quiz-meta{display:flex;justify-content:space-between;gap:12px;margin-top:8px;font-weight:700}.quiz-pos{color:var(--accent)}.progress-bar{margin-top:10px;height:6px;border-radius:999px;background:#14241c14;overflow:hidden}.progress-fill{height:100%;background:var(--accent);transition:width .25s ease}.section-tag{display:inline-block;margin-top:10px;padding:4px 10px;border-radius:999px;font-size:.78rem;color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,white)}.question-card{margin-top:16px;padding:18px;border-radius:var(--radius);background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow)}.stem{margin:0 0 14px;font-size:1.02rem;font-weight:500;white-space:pre-wrap}.q-no{display:block;margin-bottom:8px;font-size:.82rem;font-weight:700;color:var(--accent)}.q-images{display:grid;gap:10px;margin-bottom:16px;justify-items:center}.q-images img{width:100%;height:auto;max-height:360px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line)}.q-images.graph-stem{margin-bottom:12px}.q-images.data-charts .q-image-btn{max-width:min(720px,100%)}.q-images.data-charts .q-image-btn img{max-height:min(480px,70vh)}.q-image-btn{display:block;padding:0;border:0;background:transparent;cursor:zoom-in;max-width:min(520px,100%);width:100%}.q-images.graph-stem .q-image-btn{max-width:min(520px,96%)}.q-image-btn img{display:block;width:100%;height:auto;max-height:360px;object-fit:contain;image-rendering:auto;-webkit-font-smoothing:antialiased;background:#fff;border:1px solid var(--line);border-radius:12px}.options{display:grid;gap:10px}.options.image-options{grid-template-columns:1fr;gap:10px}.option{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:center;text-align:left;padding:12px 14px;border-radius:14px;border:1px solid var(--line);background:#fff;cursor:pointer;transition:border-color .15s ease,background .15s ease}.opt-image-wrap{display:flex;align-items:center;justify-content:center;width:100%;min-height:72px;padding:4px 0;overflow:visible}.opt-image-wrap img{display:block;width:auto;height:auto;max-width:min(160px,100%);max-height:100px;object-fit:contain;object-position:center;image-rendering:auto;background:#fff;border-radius:8px;border:1px solid rgba(20,36,28,.06)}.option.has-image{min-height:88px;align-items:center}.option:hover:not(:disabled){border-color:color-mix(in srgb,var(--accent) 45%,var(--line))}.option:disabled{cursor:default}.opt-key{width:28px;height:28px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-weight:700;background:#14241c0f;flex-shrink:0}.opt-text{white-space:pre-wrap;padding-top:3px}.option.correct{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 12%,white)}.option.correct .opt-key{background:var(--ok);color:#fff}.option.wrong{border-color:var(--bad);background:color-mix(in srgb,var(--bad) 10%,white)}.option.wrong .opt-key{background:var(--bad);color:#fff}.feedback{margin-top:16px;padding:14px;border-radius:14px;border:1px solid var(--line);animation:rise .25s ease}.feedback.ok{border-color:color-mix(in srgb,var(--ok) 40%,var(--line));background:color-mix(in srgb,var(--ok) 8%,white)}.feedback.bad{border-color:color-mix(in srgb,var(--bad) 40%,var(--line));background:color-mix(in srgb,var(--bad) 8%,white)}.feedback-title{margin:0 0 8px;display:flex;flex-wrap:wrap;gap:8px 14px;font-weight:700}.feedback-title span{font-weight:500;color:var(--muted)}.feedback-exp{margin:0;white-space:pre-wrap;font-size:.94rem}.feedback-exp.muted,.feedback-tip{color:var(--muted)}.feedback-tip{margin:10px 0 0;font-size:.88rem}.quiz-nav{position:fixed;left:0;right:0;bottom:0;display:flex;justify-content:center;gap:12px;padding:12px 18px calc(12px + var(--safe-bottom));background:color-mix(in srgb,#f4f7f2 92%,white);border-top:1px solid var(--line);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.quiz-nav .btn{min-width:120px}.wrong-actions,.result-actions{display:flex;flex-wrap:wrap;gap:10px;margin:12px 0 18px}.wrong-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}.wrong-item{padding:14px 16px;border-radius:14px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow)}.wrong-item-top{display:flex;justify-content:space-between;gap:10px;align-items:center}.wrong-times{color:var(--bad);font-size:.85rem;font-weight:700}.wrong-stem{margin:10px 0;color:var(--ink)}.wrong-item-actions{display:flex;justify-content:space-between;color:var(--muted);font-size:.88rem}.text-btn{border:0;background:transparent;color:var(--accent);cursor:pointer;padding:0}.empty{padding:36px 16px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:var(--radius);background:#ffffff80}.result-score{margin:18px 0;padding:28px 16px;text-align:center;border-radius:var(--radius);background:linear-gradient(160deg,#123628,#1f6b4a);color:#fff;box-shadow:var(--shadow)}.result-score .rate{font-size:clamp(2.6rem,10vw,3.6rem);font-weight:900;line-height:1}.result-score p{margin:8px 0 0;opacity:.85}.result-stats{list-style:none;margin:0 0 18px;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.result-stats li{padding:14px 8px;text-align:center;border-radius:14px;background:var(--card);border:1px solid var(--line)}.result-stats strong{display:block;font-size:1.35rem}.result-stats span{color:var(--muted);font-size:.82rem}.boot-loading,.boot-error{min-height:100vh;display:grid;place-content:center;gap:12px;text-align:center;padding:24px}.spinner{width:36px;height:36px;margin:0 auto;border-radius:50%;border:3px solid rgba(20,36,28,.12);border-top-color:#1f6b4a;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes rise{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@media(max-width:560px){.result-stats{grid-template-columns:repeat(2,1fr)}}