:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:#243b35;background:#fffaf0;font-synthesis:none;text-rendering:optimizeLegibility;--ink:#243b35;--muted:#71817b;--green:#37866b;--yellow:#d19d1d;--red:#d56656;--black:#4e5754;--cream:#fffaf0;--card:#fff;--line:#eee8d9;--shadow:0 12px 32px #63583812;--radius:24px}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:radial-gradient(ellipse at 8% 0%,#ffedb788,transparent 32rem),var(--cream)}button,input{font:inherit}button{cursor:pointer;color:inherit}.app-shell{width:min(100%,1080px);min-height:100vh;margin:0 auto;padding:0 28px 108px}.topbar{height:78px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #ece6d8}.brand{display:flex;gap:11px;align-items:center;border:0;background:none;font-weight:800;font-size:19px;letter-spacing:.01em}.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:14px;background:#f8c64e;color:#245b4d;font-size:23px;box-shadow:0 3px 0 #dfaa34}.top-actions{display:flex;align-items:center;gap:10px}.offline-pill{font-size:12px;background:#ecf6ed;color:#397253;padding:7px 11px;border-radius:99px}.icon-button{width:42px;height:42px;border:1px solid var(--line);border-radius:14px;background:#fff;display:grid;place-items:center}.icon-button svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.icon-button:hover,.button:hover,.char-tile:hover{transform:translateY(-2px);box-shadow:0 7px 16px #273e3320}.icon-button, .button,.char-tile{transition:transform .18s,box-shadow .18s,background-color .18s}main{padding:30px 0 16px}.hero{position:relative;overflow:hidden;padding:36px 40px;min-height:228px;border-radius:30px;background:#dff1e4;display:flex;align-items:center;justify-content:space-between;box-shadow:inset 0 -4px #bddbc5,0 12px 24px #6577590c}.hero:after{content:'团';position:absolute;right:9%;top:-41px;font-size:230px;font-weight:800;color:#ffffff35;line-height:1}.hero-copy{position:relative;z-index:1;max-width:560px}.eyebrow{font-size:12px;letter-spacing:.1em;font-weight:700;color:#55826f;text-transform:uppercase}.hero h1{font-size:clamp(27px,4vw,40px);margin:8px 0 7px;line-height:1.3;letter-spacing:.015em}.hero p{margin:0;color:#577369;font-size:15px}.hero-actions{position:relative;z-index:1;display:flex;flex-direction:column;align-items:flex-end;gap:10px}.button{min-height:48px;padding:0 20px;border:0;border-radius:15px;background:#296653;color:#fff;font-weight:700;box-shadow:0 4px 0 #1e5141;display:inline-flex;justify-content:center;align-items:center;gap:8px}.button.secondary{background:#f8c64e;color:#4e441f;box-shadow:0 4px 0 #d8a832}.button.soft{background:#edf5ed;color:#356451;box-shadow:0 4px 0 #d2e5d4}.button.ghost{background:#fff;border:1px solid var(--line);color:var(--ink);box-shadow:none}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;margin:20px 0}.stat-card{padding:16px 18px;border:1px solid var(--line);background:#ffffffd9;border-radius:20px;box-shadow:var(--shadow)}.stat-top{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted)}.stat-dot{width:10px;height:10px;border-radius:50%;background:var(--dot)}.stat-value{font-family:'Baloo 2',sans-serif;font-weight:700;font-size:31px;line-height:1.2;margin-top:7px}.stat-sub{font-size:11px;color:#81908a;margin-top:1px}.progress-wrap{margin:0 0 25px;padding:0 3px}.progress-label{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:8px}.progress-bar{height:9px;background:#eee9dd;border-radius:99px;overflow:hidden}.progress-fill{height:100%;border-radius:inherit;background:linear-gradient(90deg,#82bc8e,#3e8b6a);transition:width .25s}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:16px;margin:24px 2px 13px}.section-heading h2{font-size:19px;margin:0}.section-heading p{font-size:12px;color:var(--muted);margin:4px 0 0}.search-row{display:flex;gap:10px;align-items:center}.searchbox{height:45px;min-width:min(260px,48vw);display:flex;align-items:center;gap:8px;padding:0 12px;border:1px solid #e9e2d2;background:#fff;border-radius:14px}.searchbox svg{width:18px;height:18px;fill:none;stroke:#89948d;stroke-width:2}.searchbox input{min-width:0;width:100%;border:0;outline:0;background:transparent;color:var(--ink)}.searchbox:focus-within{border-color:#82b69a;box-shadow:0 0 0 3px #4a93661c}.select{height:45px;padding:0 34px 0 13px;border:1px solid #e9e2d2;background:#fff;border-radius:14px;color:var(--ink)}.char-grid{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:9px}.char-tile{aspect-ratio:1;border:1px solid #eae6db;border-radius:17px;background:#fff;box-shadow:0 3px 9px #574e3709;position:relative;display:grid;place-items:center;font-size:27px;font-weight:600;color:var(--tile);}.char-tile::after{content:'';width:6px;height:6px;position:absolute;right:7px;top:7px;border-radius:50%;background:var(--tile)}.char-tile[data-color="green"]{--tile:var(--green);background:#f2f8f1}.char-tile[data-color="yellow"]{--tile:#b48614;background:#fff8df}.char-tile[data-color="red"]{--tile:#c35348;background:#fff0ec}.char-tile[data-color="black"]{--tile:var(--black);background:#f5f5f2}.char-tile:focus-visible,.button:focus-visible,.icon-button:focus-visible,.nav-item:focus-visible{outline:3px solid #3485d3;outline-offset:2px}.empty-state{padding:45px 20px;text-align:center;background:#fff;border:1px dashed #e4ddca;border-radius:20px;color:var(--muted)}.page-title{display:flex;align-items:center;justify-content:space-between;margin:0 0 18px}.page-title h1{font-size:28px;margin:0}.back-button{height:42px;padding:0 14px;border:1px solid var(--line);background:#fff;border-radius:13px}.reader-layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(290px,.85fr);gap:18px}.reader-card,.info-card,.practice-card,.result-card{background:#fff;border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow)}.reader-card{padding:22px;display:flex;flex-direction:column;align-items:center;min-height:500px}.reader-top{width:100%;display:flex;justify-content:space-between;align-items:center}.status-tag{display:inline-flex;align-items:center;gap:7px;border-radius:99px;padding:7px 11px;font-size:12px;font-weight:700}.status-tag::before{content:'';width:7px;height:7px;border-radius:50%;background:currentColor}.status-tag.green{background:#eaf5ec;color:var(--green)}.status-tag.yellow{background:#fff4d3;color:#a77a0c}.status-tag.red{background:#fff0eb;color:#bd5549}.status-tag.black{background:#f1f2ef;color:#555e5a}.reader-pinyin{height:48px;margin-top:6px;color:#54776a;font-size:21px;font-weight:600}.hanzi-stage{position:relative;width:min(100%,330px);aspect-ratio:1;display:grid;place-items:center;background-color:#fffefa;background-image:linear-gradient(to right,transparent calc(50% - .5px),#e8d7bd 50%,transparent calc(50% + .5px)),linear-gradient(to bottom,transparent calc(50% - .5px),#e8d7bd 50%,transparent calc(50% + .5px)),linear-gradient(45deg,transparent calc(50% - .5px),#eee5d8 50%,transparent calc(50% + .5px)),linear-gradient(-45deg,transparent calc(50% - .5px),#eee5d8 50%,transparent calc(50% + .5px));border:1px solid #f0e8da;border-radius:20px}.hanzi-glyph{font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:clamp(150px,24vw,210px);font-weight:500;line-height:1;color:#294f43;transform:translateY(-5px)}.stroke-step{width:min(100%,420px);margin-top:12px;padding:13px 15px;border:1px solid #f0e8da;border-radius:17px;background:#fffefa}.stroke-info{display:flex;align-items:center;justify-content:space-between;gap:12px}.stroke-info strong{font-size:13px;color:#526c5e}.stroke-preview{height:120px;display:grid;place-items:center}.stroke-preview svg{width:110px;height:110px;overflow:hidden}.stroke-step-actions{display:flex;justify-content:center;gap:8px}.step-button{min-height:40px;padding:0 12px;border:1px solid var(--line);border-radius:12px;background:#fff;color:#51675e;font-size:12px;font-weight:700}.step-button.primary{background:#eaf3e8;border-color:#d3e5d4;color:#356f54}.step-button:disabled{opacity:.42;cursor:default}.reader-controls{display:flex;gap:10px;margin-top:16px}.round-control{width:46px;height:46px;border:1px solid var(--line);border-radius:15px;background:#fff;font-size:20px}.round-control.speak{background:#fff1d5;border-color:#f5e3b7;color:#9d6d0d}.reader-side{display:flex;flex-direction:column;gap:14px}.info-card{padding:20px}.info-card h3{margin:0 0 12px;font-size:15px}.word-list{display:flex;flex-wrap:wrap;gap:8px}.word-chip{padding:9px 12px;background:#f6f6ef;border-radius:12px;color:#53645b;font-size:14px}.info-note{font-size:12px;color:#849088;line-height:1.7;margin:11px 0 0}.char-history{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.mini-stat{padding:10px;background:#f7f8f3;border-radius:12px}.mini-stat strong{display:block;font-size:19px}.mini-stat span{font-size:11px;color:var(--muted)}.reader-nav{display:flex;justify-content:space-between;gap:12px;margin-top:auto;padding-top:19px;width:100%}.practice-shell{max-width:760px;margin:auto}.practice-intro{padding:24px 26px;border-radius:23px;background:#fff2d4;box-shadow:inset 0 -4px #f1dcab}.practice-intro h1{margin:0;font-size:25px}.practice-intro p{margin:8px 0 0;color:#776943;font-size:14px}.practice-card{margin-top:18px;padding:22px 26px}.practice-progress{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted)}.practice-progress strong{color:var(--ink)}.practice-current{display:flex;align-items:center;justify-content:center;gap:13px;margin:28px 0 23px}.practice-cue{font-size:12px;color:#839089}.practice-glyph{width:158px;height:158px;border-radius:28px;border:2px dashed #e3d6bb;background:#fffdf7;display:grid;place-items:center;font-size:104px;color:#315748;position:relative}.practice-glyph::after{content:'⌖';position:absolute;right:-12px;top:-12px;width:34px;height:34px;border-radius:50%;background:#ed886e;color:#fff;font-size:21px;display:grid;place-items:center;box-shadow:0 3px 0 #ce705b}.practice-answer-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.answer-button{min-height:58px;border:0;border-radius:17px;font-size:17px;font-weight:800}.answer-button.correct{background:#e7f3e8;color:#32744f}.answer-button.incorrect{background:#fdebe6;color:#b84e43}.answer-button:active{transform:scale(.98)}.practice-foot{font-size:12px;text-align:center;color:#89928d;margin:15px 0 0}.practice-list{display:flex;gap:8px;flex-wrap:wrap;margin-top:19px}.practice-dot{width:33px;height:33px;display:grid;place-items:center;border-radius:10px;background:#f3f3ef;color:#74807a;font-size:13px}.practice-dot.done{background:#e4f1e5;color:#36784f}.practice-dot.current{outline:2px solid #e4b74b;background:#fff4d4;color:#7b5e12}.practice-actions{display:flex;justify-content:center;gap:10px;margin-top:18px}.result-card{max-width:680px;margin:auto;padding:26px}.result-head{text-align:center;padding:14px 10px 22px}.result-mark{width:70px;height:70px;display:grid;place-items:center;border-radius:24px;margin:0 auto 13px;background:#e6f3e5;color:#408454;font-size:38px}.result-head h1{font-size:26px;margin:0}.result-head p{color:var(--muted);margin:7px 0 0}.result-score{font-family:'Baloo 2',sans-serif;font-size:42px;color:#347957}.result-rows{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:17px 0}.result-char{padding:12px 6px;text-align:center;background:#f6f7f2;border-radius:14px}.result-char strong{display:block;font-size:25px}.result-char span{font-size:11px;color:var(--muted)}.result-actions{display:flex;justify-content:center;gap:10px}.toast{position:fixed;z-index:10;left:50%;bottom:96px;transform:translateX(-50%);padding:12px 18px;border-radius:99px;background:#263f36;color:#fff;font-size:13px;box-shadow:0 8px 20px #0002;animation:toast-in .2s ease}.bottom-nav{position:fixed;z-index:5;bottom:0;left:0;right:0;display:flex;justify-content:center;gap:20px;padding:10px 20px calc(10px + env(safe-area-inset-bottom));background:#fffdf8eb;border-top:1px solid #eae4d6;backdrop-filter:blur(12px)}.nav-item{min-width:132px;padding:7px 14px;border:0;border-radius:14px;background:transparent;color:#85908a;font-weight:600;font-size:12px;display:flex;gap:7px;align-items:center;justify-content:center}.nav-item.active{background:#eaf3e8;color:#356f54}.nav-glyph{font-size:17px;font-weight:800}.modal{width:min(calc(100% - 32px),440px);padding:27px;border:1px solid var(--line);border-radius:24px;background:#fffaf0;color:var(--ink);box-shadow:0 22px 80px #243b3540}.modal::backdrop{background:#1d2d2673;backdrop-filter:blur(3px)}.modal form{position:relative}.modal h2{font-size:22px;margin:5px 0 9px}.modal p{color:#6f7d75;line-height:1.8;font-size:14px}.modal-close{position:absolute;right:0;top:0;width:35px;height:35px;border:0;border-radius:12px;background:#f2efe5;font-size:23px}.modal-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px;margin-top:20px}.modal-actions .button{min-height:43px;padding:0 13px;font-size:13px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@keyframes toast-in{from{opacity:0;transform:translate(-50%,8px)}to{opacity:1;transform:translate(-50%,0)}}@media(max-width:760px){.app-shell{padding:0 17px 98px}.topbar{height:68px}.brand{font-size:16px}.brand-mark{width:36px;height:36px;font-size:21px}.offline-pill{font-size:11px}.hero{padding:25px 22px;min-height:200px;align-items:flex-start}.hero:after{right:-9%;top:0;font-size:170px}.hero-actions{align-items:flex-start;margin-top:16px}.hero{display:block}.hero-copy{max-width:100%}.hero-actions{flex-direction:row;flex-wrap:wrap}.hero .button{min-height:43px;padding:0 14px;font-size:13px}.stats-grid{grid-template-columns:repeat(2,1fr);gap:9px;margin:14px 0}.stat-card{padding:12px 14px}.stat-value{font-size:26px}.section-heading{align-items:flex-start;flex-direction:column}.search-row{width:100%}.searchbox{flex:1;min-width:0}.select{max-width:135px}.char-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:8px}.char-tile{font-size:25px;border-radius:15px}.reader-layout{grid-template-columns:1fr}.reader-card{min-height:0;padding:16px}.stroke-step{width:min(100%,360px);padding:11px}.stroke-preview{height:110px}.stroke-preview svg{width:100px;height:100px}.stroke-step-actions{gap:6px}.step-button{padding:0 9px;font-size:11px}.hanzi-stage{width:min(88vw,340px)}.hanzi-glyph{font-size:clamp(150px,44vw,205px)}.reader-side{display:grid;grid-template-columns:1fr}.reader-nav{margin-top:0}.practice-card{padding:19px 15px}.practice-current{margin:23px 0}.practice-glyph{width:142px;height:142px;font-size:94px}.practice-intro{padding:20px}.practice-intro h1{font-size:22px}.result-card{padding:18px}.result-rows{grid-template-columns:repeat(5,1fr);gap:6px}.result-char{padding:9px 3px}.result-char strong{font-size:21px}.result-actions{flex-wrap:wrap}.bottom-nav{gap:8px}.nav-item{min-width:120px}}@media(max-width:380px){.char-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.top-actions{gap:5px}.icon-button{width:38px;height:38px}.reader-controls{margin-top:11px}.practice-glyph{width:126px;height:126px;font-size:84px}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}

/* Distinguish recognition outcomes by color as well as symbol. */
.result-char.correct{background:#e7f3e8}.result-char.correct span{color:#32744f;font-weight:700}
.result-char.incorrect{background:#fff4d9}.result-char.incorrect span{color:#8b6500;font-weight:700}
.practice-dot.done.correct{background:#e4f1e5;color:#36784f}
.practice-dot.done.incorrect{background:#fff1cc;color:#8b6500}

/* Stroke order is shown as a clipped, horizontally scrollable sequence. */
.hanzi-stage{overflow:hidden}
.stroke-step{width:min(100%,560px);overflow:hidden}
.stroke-sequence{display:flex;flex-wrap:nowrap;gap:8px;width:100%;max-width:100%;overflow-x:auto;overflow-y:hidden;padding:8px 2px 10px;overscroll-behavior-inline:contain;scrollbar-width:auto;scrollbar-color:#b8c4ba #f2efe7;touch-action:pan-x;scroll-snap-type:x proximity}
.stroke-sequence::-webkit-scrollbar{height:8px}.stroke-sequence::-webkit-scrollbar-track{background:#f2efe7;border-radius:8px}.stroke-sequence::-webkit-scrollbar-thumb{background:#b8c4ba;border-radius:8px}
.stroke-sequence:focus-visible{outline:3px solid #3485d3;outline-offset:2px;border-radius:10px}
.stroke-sequence-item{display:flex;flex:0 0 64px;flex-direction:column;align-items:center;gap:5px;min-width:0;color:#71817b;font-size:10px;white-space:nowrap}
.stroke-sequence-item{scroll-snap-align:start}
.stroke-sequence-item svg{display:block;width:64px;height:64px;max-width:100%;overflow:hidden;border:1px solid #eee8d9;border-radius:11px;background:#fffdf7}
.stroke-scroll-controls{display:flex;align-items:center;justify-content:space-between;gap:6px;margin-top:2px}.stroke-scroll-controls span{color:#71817b;font-size:10px;white-space:nowrap}.stroke-scroll-controls .step-button{min-height:34px;padding:0 9px;font-size:11px}
.hanzi-glyph{font-family:"Kaiti SC","STKaiti","KaiTi","BiauKai","Noto Serif CJK SC","Songti SC",serif;font-weight:400}
@media(max-width:760px){.stroke-step{width:100%}.stroke-sequence{gap:6px}.stroke-sequence-item{flex-basis:58px}.stroke-sequence-item svg{width:58px;height:58px}}