:root{color-scheme:light;--bg: #f4faf8;--surface: #ffffff;--ink: #111816;--muted: #64726e;--line: #dce9e5;--soft: #eff8f5;--jade: #0e9f7b;--jade-dark: #08775d;--jade-soft: #def4ed;--blue: #2f78e8;--blue-soft: #e8f1ff;--gold: #d98216;--gold-soft: #fff2dc;--red: #e54837;--red-soft: #ffe8e4;--shadow: 0 18px 44px rgba(17, 24, 22, .08);font-family:Inter,PingFang SC,Microsoft YaHei,Noto Sans CJK SC,system-ui,sans-serif}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;background:radial-gradient(circle at 14% 0%,rgba(14,159,123,.13),transparent 30rem),linear-gradient(180deg,#edf7f4 0%,var(--bg) 48%,#edf7f4 100%);color:var(--ink)}button,textarea{font:inherit}button{cursor:pointer;-webkit-tap-highlight-color:transparent}.app-shell{min-height:100dvh;display:grid;place-items:center;padding:18px}.phone-frame{width:min(100%,430px);height:min(920px,calc(100dvh - 36px));min-height:680px;display:flex;flex-direction:column;overflow:hidden;background:var(--surface);border:1px solid rgba(14,159,123,.16);border-radius:22px;box-shadow:var(--shadow)}.app-scroll{flex:1;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:none;padding:18px 16px}.app-scroll::-webkit-scrollbar{display:none}.screen{display:grid;gap:14px;padding-bottom:8px}.hero{display:grid;gap:12px;padding-top:2px}.hero-top{display:grid;grid-template-columns:minmax(0,1fr) 52px;gap:12px;align-items:center}.hero h1,.screen-heading h1{margin:0;color:var(--ink);font-size:clamp(25px,7vw,32px);line-height:1.08;letter-spacing:0}.hero h1 span{display:inline-flex;margin-left:8px;padding:4px 9px;border-radius:999px;background:var(--jade);color:#fff;font-size:17px;vertical-align:middle}.hero p,.screen-heading p,.daily-main p,.daily-stats span,.quick-action small,.feature-card p,.spot-preview p,.task-row p,.subject-list p,.subject-list small,.question-head p,.quiz-preview small,.practice-timer span,.guide-content p,.notes-card p,.profile-table span,.metric-grid span{margin:0;color:var(--muted);line-height:1.55}.hero-top img{width:52px;height:52px;border-radius:8px}.profile-tags{display:flex;gap:7px;overflow-x:auto;padding-bottom:1px;scrollbar-width:none}.profile-tags::-webkit-scrollbar,.category-scroll::-webkit-scrollbar,.spot-scroll::-webkit-scrollbar{display:none}.profile-tags span,.meta-line span,.focus-tags span{flex:0 0 auto;border-radius:999px;background:var(--soft);color:#25302d;padding:6px 9px;font-size:12px;font-weight:800}.daily-card,.feature-card,.spot-preview,.task-row,.subject-list article,.question-card,.mistake-card,.guide-hero,.practice-timer,.guide-content,.notes-card,.empty-card,.metric-grid article{border:1px solid var(--line);border-radius:8px;background:#fffffffa}.daily-card{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(118px,.85fr);gap:14px;padding:16px}.daily-main strong{display:block;margin-top:7px;color:var(--jade);font-size:clamp(42px,15vw,60px);line-height:.95}.daily-main strong span{color:#2f3b37;font-size:17px;font-weight:800}.daily-main em{display:block;margin-top:10px;color:var(--jade-dark);font-size:13px;font-style:normal;font-weight:800}.progress-track,.plan-bar i{display:block;overflow:hidden;height:8px;border-radius:999px;background:#e5ece9}.progress-track{margin-top:14px}.progress-track i,.plan-bar b{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--jade),var(--jade-dark))}.daily-stats{display:grid;gap:10px;border-left:1px solid var(--line);padding-left:14px}.daily-stats div{display:grid;gap:2px}.daily-stats strong{font-size:20px}.quick-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.quick-action{min-height:112px;display:grid;justify-items:start;gap:6px;border:1px solid var(--line);border-radius:8px;background:#fff;padding:14px;text-align:left;color:var(--ink)}.quick-action span{width:38px;height:38px;display:grid;place-items:center;border-radius:8px;color:#fff;font-weight:900}.quick-action strong{font-size:18px}.quick-action.jade span,.primary{background:linear-gradient(135deg,var(--jade),var(--jade-dark))}.quick-action.blue span{background:linear-gradient(135deg,#3486f3,var(--blue))}.quick-action.gold span{background:linear-gradient(135deg,#f0a027,var(--gold))}.quick-action.red span{background:linear-gradient(135deg,#ff5a48,var(--red))}.feature-card,.spot-preview,.question-card,.guide-content,.notes-card,.empty-card{padding:15px}.section-title{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;margin-bottom:12px}.section-title h2,.screen-heading h1,.question-head h2{margin:2px 0 0}.section-title p,.question-head p{font-size:12px;font-weight:900;color:var(--jade-dark)}.section-title button,.secondary,.question-actions button,.mistake-card button,.feedback button{border:0;border-radius:999px;background:var(--soft);color:var(--jade-dark);padding:9px 12px;font-size:13px;font-weight:900;white-space:nowrap}.quiz-preview{display:grid;gap:10px}.meta-line{display:flex;flex-wrap:wrap;gap:7px}.quiz-preview p,.question-stem{margin:0;color:var(--ink);font-size:17px;font-weight:800;line-height:1.55}.spot-preview-body{display:grid;grid-template-columns:110px minmax(0,1fr);gap:12px;align-items:center}.spot-preview-body img,.guide-hero img,.spot-visual{width:100%;display:block;border-radius:8px;object-fit:cover}.spot-preview-body img,.spot-preview-body .spot-visual{height:92px}.spot-visual{min-width:0;display:grid;place-content:center;gap:4px;background:linear-gradient(135deg,#0e9f7beb,#08775deb),var(--jade);color:#fff;overflow:hidden;padding:10px;text-align:center}.spot-visual strong,.spot-visual em,.spot-visual span{display:block;margin:0;color:inherit;line-height:1.2}.spot-visual strong{font-size:13px}.spot-visual em{font-size:18px;font-style:normal;font-weight:900}.spot-visual span{font-size:12px;opacity:.86}.spot-preview-body span{display:inline-flex;margin-top:8px;color:var(--jade-dark);font-weight:900;font-size:13px}.screen-heading{display:grid;gap:8px}.task-stack,.subject-list,.mistake-stack,.qa-stack{display:grid;gap:10px}.task-row{width:100%;display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:11px;align-items:center;color:var(--ink);text-align:left;padding:13px}.task-row>span{width:38px;height:38px;display:grid;place-items:center;border-radius:50%;background:var(--soft);color:var(--jade-dark);font-weight:900}.task-row.done>span{color:#fff;background:var(--jade)}.task-row strong{display:block;font-size:16px}.task-row em{color:var(--jade-dark);font-size:13px;font-style:normal;font-weight:900}.plan-bars{display:grid;gap:14px}.plan-bar{display:grid;gap:7px}.plan-bar div{display:flex;justify-content:space-between;gap:12px}.plan-bar span,.plan-bar p{color:var(--muted);font-size:13px}.subject-list article{padding:14px}.subject-list article>div{display:flex;justify-content:space-between;gap:12px}.subject-list h3{margin:0;font-size:18px}.subject-list article>div span{color:var(--red);font-size:12px;font-weight:900;white-space:nowrap}.subject-list p{margin-top:8px}.subject-list small{display:block;margin-top:8px}.quiz-summary,.metric-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.quiz-summary div,.quiz-summary button,.metric-grid article{border:1px solid var(--line);border-radius:8px;background:#fff;padding:12px;text-align:left}.quiz-summary strong,.metric-grid strong{display:block;color:var(--ink);font-size:24px;line-height:1}.quiz-summary span,.quiz-summary button,.metric-grid span{color:var(--muted);font-size:12px;font-weight:800}.quiz-summary button{color:var(--red);font-weight:900}.category-scroll,.spot-scroll{display:flex;gap:8px;overflow-x:auto;margin:0 -16px;padding:0 16px 2px;scrollbar-width:none}.category-scroll button,.spot-scroll button,.tab-row button{flex:0 0 auto;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--ink);padding:9px 12px;font-size:13px;font-weight:900}.category-scroll button.active,.spot-scroll button.active,.tab-row button.active{border-color:var(--jade);background:var(--jade-soft);color:var(--jade-dark)}.question-head{display:flex;justify-content:space-between;gap:12px;margin-bottom:10px}.question-head span{color:var(--jade-dark);font-weight:900;white-space:nowrap}.question-stem{margin-top:12px}.option-list{display:grid;gap:9px;margin-top:14px}.answer-option{width:100%;display:grid;grid-template-columns:34px minmax(0,1fr);gap:10px;align-items:center;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);padding:11px;text-align:left}.answer-option span{width:30px;height:30px;display:grid;place-items:center;border-radius:50%;background:var(--soft);color:var(--jade-dark);font-weight:900}.answer-option strong{line-height:1.45}.answer-option.active{border-color:#0e9f7bad;background:#f3fbf8}.primary{border:0;border-radius:999px;color:#fff;padding:11px 15px;font-weight:900}.primary.full,.secondary.wide{width:100%;margin-top:12px}.feedback{display:grid;gap:8px;margin-top:13px;border-radius:8px;padding:12px;line-height:1.55}.feedback.correct{background:var(--jade-soft)}.feedback.wrong,.feedback.warn{background:var(--red-soft)}.feedback p,.feedback ul{margin:0;color:#34423e}.feedback ul{padding-left:18px}.feedback small,.mistake-card small{color:var(--jade-dark);font-weight:900}.question-actions{display:flex;justify-content:flex-end;margin-top:12px}.empty-card{display:grid;gap:6px}.empty-card p{margin:0;color:var(--muted)}.mistake-card{display:grid;gap:10px;padding:14px}.mistake-card h3{margin:0;line-height:1.45}.mistake-card p{margin:0;color:#3e4a47;line-height:1.55}.mistake-card details{border-radius:8px;background:var(--soft);padding:10px 12px}.mistake-card summary{color:var(--jade-dark);font-weight:900}.guide-hero{overflow:hidden}.guide-hero img,.guide-hero .spot-visual{height:180px;border-radius:0}.guide-hero .spot-visual em{font-size:28px}.guide-hero-copy{padding:14px}.guide-hero p{margin:0;color:var(--jade-dark);font-size:12px;font-weight:900}.guide-hero h2{margin:4px 0 8px;font-size:24px}.guide-hero span,.route-tip{color:var(--muted);line-height:1.6}.practice-timer{display:grid;gap:12px;padding:14px;background:linear-gradient(135deg,#0e9f7b1f,#fffffff5),#fff}.practice-timer strong{display:block;font-size:46px;line-height:1}.practice-timer div:last-child{display:flex;flex-wrap:wrap;gap:8px}.tab-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.tab-row button{min-width:0;border-radius:8px}.guide-content{display:grid;gap:12px}.focus-tags{display:flex;flex-wrap:wrap;gap:7px}.focus-tags span{background:var(--jade-soft);color:var(--jade-dark)}.route-tip{border-left:3px solid var(--jade);padding-left:10px;font-weight:800}.qa-stack details{border-radius:8px;background:var(--soft);padding:11px 12px}.qa-stack summary{color:var(--jade-dark);font-weight:900}.qa-stack p{margin:8px 0 0}.tips-list{margin:0;padding-left:20px;color:#3e4a47;line-height:1.7}.notes-card textarea{width:100%;min-height:128px;resize:vertical;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);padding:12px;line-height:1.65;outline:none}.notes-card textarea:focus{border-color:var(--jade);box-shadow:0 0 0 3px #0e9f7b1f}.profile-table{display:grid;gap:10px}.profile-table div{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding-bottom:10px}.profile-table div:last-child{border-bottom:0;padding-bottom:0}.profile-table strong{color:var(--jade-dark)}.metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.bottom-nav{flex:0 0 auto;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:2px;border-top:1px solid var(--line);background:#fffffffa;padding:8px 10px calc(8px + env(safe-area-inset-bottom))}.bottom-nav button{display:grid;place-items:center;gap:4px;border:0;background:transparent;color:#4d5a56;font-size:12px;font-weight:900;min-width:0}.bottom-nav .nav-icon{width:28px;height:28px;display:grid;place-items:center;border-radius:8px;color:inherit;background:transparent}.bottom-nav b{display:block;max-width:100%;overflow:hidden;font-weight:900;line-height:1.15;text-overflow:ellipsis;white-space:nowrap}.bottom-nav button.active{color:var(--jade-dark)}.bottom-nav button.active .nav-icon{color:#fff;background:var(--jade)}@media(max-width:520px){.app-shell{display:block;padding:0}.phone-frame{width:100%;height:100dvh;min-height:100dvh;border:0;border-radius:0;box-shadow:none}.app-scroll{padding:max(14px,env(safe-area-inset-top)) 14px 16px}}@media(max-width:380px){.daily-card{grid-template-columns:1fr}.daily-stats{grid-template-columns:repeat(3,minmax(0,1fr));border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:12px}.spot-preview-body{grid-template-columns:92px minmax(0,1fr)}.task-row{grid-template-columns:38px minmax(0,1fr)}.task-row em{grid-column:2}}@media(prefers-reduced-motion:no-preference){.feature-card,.daily-card,.quick-action,.question-card,.guide-content,.task-row{animation:rise .28s ease both}@keyframes rise{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}}