:root{--ink:#172744;--muted:#8590a1;--blue:#347ee0;--blue-soft:#edf4ff;--line:#edf0f5;--red:#f06975;--paper:#fff;--soft:#f6f8fb;--shadow:0 28px 90px -36px #26375438,0 8px 25px -16px #182d4926;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;color:var(--ink);font-synthesis:none;-webkit-font-smoothing:antialiased}
*{box-sizing:border-box}html,body{margin:0;width:100%;min-height:100%;overscroll-behavior:none}body{background:#f2f4f8}button{font:inherit;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent}button:disabled{cursor:default}button,input{outline-offset:5px}button:focus-visible{outline:3px solid #8eb9f2}button svg{pointer-events:none;flex-shrink:0}button:active{transform:translateY(1px)}[hidden]{display:none!important}svg{display:block}button{border:0}button,.level-card,.tool{transition:background .16s,box-shadow .16s,transform .16s,border-color .16s}::selection{background:#e1ecff}
.workspace{width:min(1020px,100%);min-height:100dvh;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:84px;padding:24px 24px 24px 20px}.intro{flex:1;max-width:360px;padding-bottom:16px}.wordmark{display:flex;align-items:center;gap:12px;font-size:13px;font-weight:750;letter-spacing:2px;margin-bottom:62px}.brand-symbol{width:37px;height:37px;display:flex;align-items:center;justify-content:center;background:white;border:1px solid #e4e9f1;border-radius:12px;box-shadow:0 3px 8px #17274404}.brand-symbol svg{width:23px;height:23px}.intro .eyebrow{font-size:12px;letter-spacing:2.4px;color:#8a95a5;margin:0 0 17px}.intro h1{font-size:42px;line-height:1.45;font-weight:680;letter-spacing:-1.6px;margin:0 0 24px}.intro .lede{font-size:14px;line-height:1.95;color:#7b8799;margin:0;max-width:296px}.intro-steps{display:flex;gap:20px;margin-top:37px;padding-top:24px;border-top:1px solid #dfe5ee}.intro-step{font-size:12px;line-height:1.8;color:#77869b;white-space:nowrap}.intro-step b{display:block;font-size:10px;letter-spacing:1px;font-weight:650;color:#acb5c3;margin-bottom:4px}.intro-bottom{margin-top:78px;font-size:11px;letter-spacing:.7px;color:#9ca7b5;display:flex;align-items:center;gap:8px}.intro-bottom span{width:5px;height:5px;border-radius:50%;background:#8fa9c8}
.app{position:relative;isolation:isolate;width:428px;flex-shrink:0;height:calc(100dvh - 48px);max-height:880px;min-height:590px;border:1px solid #e4e9f1;border-radius:34px;background:var(--paper);box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;user-select:none;-webkit-user-select:none}.topbar{height:91px;padding:26px 23px 8px;display:grid;grid-template-columns:42px 1fr 42px;align-items:center;gap:12px;flex-shrink:0}.icon-button{width:42px;height:42px;display:flex;align-items:center;justify-content:center;border-radius:14px;color:#66788f;background:transparent}.icon-button:hover{background:var(--soft);color:var(--blue)}.icon-button svg{width:23px;height:23px}.title-block{text-align:center;min-width:0}.game-brand{font-size:20px;line-height:1.25;font-weight:750;letter-spacing:-.55px;color:var(--ink)}.level-meta{display:flex;align-items:center;justify-content:center;gap:6px;min-width:0;margin-top:6px;white-space:nowrap}.level-title{font-size:11px;line-height:1.5;font-weight:600;letter-spacing:.35px;color:#7c8a9e;flex-shrink:0}.level-dot{font-size:11px;color:#b4bdcb}.level-name{font-size:11px;line-height:1.5;color:#919ba9;letter-spacing:.2px;min-width:0;overflow:hidden;text-overflow:ellipsis}.status-row{height:67px;margin:0 24px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;flex-shrink:0}.remaining-badge{justify-self:start;display:flex;align-items:center;gap:7px;height:35px;padding:0 11px;background:#f3f5f9;border:1px solid #eef1f6;border-radius:12px;color:#74829a;font-size:14px;min-width:60px}.remaining-badge svg{width:15px;height:15px}.remaining-badge strong{font-variant-numeric:tabular-nums;font-weight:600;color:#526582}.hearts{display:flex;gap:8px;align-items:center;padding:0 10px}.heart{width:26px;height:26px;color:var(--red);transition:color .2s,transform .2s}.heart.empty{color:#e9edf3}.heart.lost{animation:heart-out .35s ease}.difficulty{justify-self:end;padding:6px 10px;border:1px solid #eef0f4;border-radius:10px;background:#fbfcfd;color:#8a95a5;font-size:11px;font-weight:500}.difficulty[data-type="挑战"]{color:#b18a58;background:#fcf8f2;border-color:#f5edde}.progress-track{height:3px;background:#f2f5fa;margin:0 27px;border-radius:3px;overflow:hidden;flex-shrink:0}.progress-fill{height:100%;width:0;background:#9cbfea;border-radius:3px;transition:width .3s ease}
.play-area{position:relative;flex:1;min-height:180px;margin:0 9px;overflow:hidden}.board-canvas{display:block;position:absolute;width:100%;height:100%;inset:0;touch-action:none;outline:none}.board-canvas:focus-visible{box-shadow:inset 0 0 0 2px #d6e6fb;border-radius:20px}.stage-label{position:absolute;top:23px;left:38px;right:38px;text-align:center;color:#a0a9b5;font-size:11px;letter-spacing:.5px;line-height:1.8;pointer-events:none}.zoom-button{position:absolute;top:19px;right:16px;width:29px;height:29px;border-radius:9px;display:flex;align-items:center;justify-content:center;background:#f6f8fbdd;color:#98a6b8;z-index:2}.zoom-button svg{width:15px;height:15px}.zoom-button:hover{color:var(--blue);background:#edf4ff}.onboard{position:absolute;bottom:24px;left:20px;right:20px;display:flex;align-items:center;justify-content:center;gap:8px;pointer-events:none;color:#6e8fb9;font-size:12px;line-height:1.7}.onboard svg{width:18px;height:18px;opacity:.75}.mode-banner{position:absolute;bottom:17px;left:50%;transform:translateX(-50%);padding:8px 13px;max-width:92%;width:max-content;display:flex;gap:7px;align-items:center;pointer-events:none;border-radius:11px;background:#f1f6fe;color:#6283af;font-size:11px;line-height:1.5;text-align:center}.mode-banner svg{width:14px;height:14px}.tools-wrap{padding:6px 25px 0;flex-shrink:0}.tools{display:grid;grid-template-columns:1fr 1fr;gap:12px}.tool{position:relative;display:flex;align-items:center;justify-content:center;gap:12px;height:77px;border:1px solid #edf0f5;border-radius:21px;background:#f8f9fc;color:var(--ink);text-align:left}.tool:hover{background:#f0f5fc;border-color:#e0e9f6;box-shadow:0 4px 14px #253f7005}.tool:disabled{opacity:.5}.tool.active{background:#edf4ff;border-color:#bfd6f7;box-shadow:inset 0 0 0 1px #e4efff}.tool-art{width:37px;height:42px;display:flex;align-items:center;justify-content:center}.tool-art svg{width:35px;height:39px}.tool-copy{display:flex;flex-direction:column;gap:4px}.tool-copy strong{font-size:13px;letter-spacing:.4px;font-weight:600}.tool-copy small{font-size:10px;color:#97a2b2;letter-spacing:.3px}.tool.active .tool-copy small{color:#638fc8}.count-tag{display:inline-block;min-width:15px;height:15px;line-height:15px;text-align:center;border-radius:5px;background:#e8edf6;color:#8596b0;margin-left:3px;font-size:10px;font-weight:650}.footer-note{text-align:center;min-height:51px;padding:15px 16px 20px;color:#b0b8c5;font-size:10px;letter-spacing:.8px;flex-shrink:0}.toast{position:absolute;z-index:8;left:50%;top:175px;bottom:auto;transform:translate(-50%,8px);max-width:calc(100% - 50px);width:max-content;border-radius:12px;background:#253956ef;color:white;padding:11px 15px;font-size:12px;line-height:1.65;text-align:center;box-shadow:0 8px 24px #17274413;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}.toast.show{opacity:1;transform:translate(-50%,0)}.count-pop{animation:count-pop .22s ease}
.modal-layer{position:absolute;z-index:20;inset:0;display:flex;align-items:center;justify-content:center;padding:15px;background:#f1f5facc;backdrop-filter:blur(9px);-webkit-backdrop-filter:blur(9px)}.sheet{width:100%;max-height:100%;overflow:auto;overscroll-behavior:contain;background:white;border:1px solid #e5eaf2;border-radius:27px;box-shadow:0 20px 50px #17274414;animation:sheet-in .25s ease;scrollbar-width:thin;scrollbar-color:#dae2ee transparent}.sheet-header{display:flex;justify-content:space-between;align-items:center;padding:24px 23px 13px}.sheet-title{font-size:22px;font-weight:650;letter-spacing:-.4px;margin:0}.sheet-subtitle{font-size:11px;color:#97a3b4;line-height:1.7;margin:7px 0 0}.close-button{width:33px;height:33px;background:#f6f8fb;color:#8a99ad;display:flex;align-items:center;justify-content:center;border-radius:11px}.close-button svg{width:18px;height:18px}.close-button:hover{color:var(--ink);background:#ecf1f8}.level-grid{padding:7px 18px 20px;display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.level-card{position:relative;min-width:0;height:101px;padding:11px 10px 9px;background:#f8f9fc;border:1px solid #edf0f5;border-radius:16px;text-align:left;color:var(--ink)}.level-card:hover{background:#f1f6ff;border-color:#d4e4fb;transform:translateY(-2px)}.level-card.current{background:#f0f6ff;border-color:#9fc2f2}.level-card.complete{background:#fafbfd}.level-card.current.complete{background:#f0f6ff}.level-number{font-size:21px;font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:-.5px}.level-mini{position:absolute;top:12px;right:9px;opacity:.33;width:28px;height:28px}.level-mini svg{width:100%;height:100%}.level-card-name{font-size:10px;letter-spacing:0;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-top:6px;color:#8291a5}.tiny-stars{display:flex;gap:3px;margin-top:7px}.tiny-stars svg{width:10px;height:10px;color:#dce3ec}.tiny-stars .filled{color:#efbd62}.sheet-bottom{text-align:center;font-size:10px;letter-spacing:.3px;color:#a8b2c0;padding:0 16px 22px}.settings-list{padding:0 23px}.setting-row{display:flex;align-items:center;justify-content:space-between;padding:18px 0;border-bottom:1px solid #f0f2f6;gap:15px}.setting-label strong{display:block;font-size:13px;font-weight:550}.setting-label small{display:block;color:#a1adbd;font-size:10px;line-height:1.7;margin-top:4px}.switch{position:relative;width:43px;height:26px;background:#dde4ee;border-radius:16px;flex-shrink:0;padding:0;transition:background .2s}.switch::after{content:"";position:absolute;width:20px;height:20px;border-radius:50%;background:white;top:3px;left:3px;box-shadow:0 1px 3px #14244418;transition:transform .2s}.switch[aria-checked="true"]{background:#5a95e2}.switch[aria-checked="true"]::after{transform:translateX(17px)}.settings-actions{padding:21px 23px;display:grid;gap:10px}.primary-button,.secondary-button{height:48px;display:flex;align-items:center;justify-content:center;gap:9px;border-radius:14px;font-size:13px;letter-spacing:.5px;font-weight:550;width:100%}.primary-button{background:var(--blue);color:white;box-shadow:0 5px 12px #347ee017}.primary-button:hover{background:#2d72cb}.secondary-button{background:#f5f7fb;border:1px solid #edf0f5;color:#71849d}.secondary-button:hover{background:#edf3fc;color:#406896}.primary-button svg,.secondary-button svg{width:17px;height:17px}.text-button{background:none;border:0;color:#97a5b8;font-size:11px;letter-spacing:.3px;padding:12px;display:block;margin:auto;text-align:center}.text-button:hover{color:var(--blue)}.result-sheet{text-align:center;padding:26px 26px 17px;overflow:auto;position:relative}.result-kicker{font-size:10px;letter-spacing:2.3px;color:#a0aebe;margin:0 0 14px}.result-art{width:150px;height:150px;margin:0 auto 15px;position:relative;display:flex;align-items:center;justify-content:center;border:1px solid #eaf0f8;border-radius:31px;background:#f8faff;box-shadow:0 8px 20px #284c8104}.result-art>svg{width:110px;height:110px}.result-art .check-mark{position:absolute;right:-10px;bottom:14px;width:30px;height:30px;border-radius:50%;background:#3d83df;display:flex;align-items:center;justify-content:center;border:4px solid white;color:white;box-shadow:0 3px 8px #20589515}.check-mark svg{width:15px;height:15px}.result-stars{display:flex;justify-content:center;gap:9px;margin:12px 0 10px}.result-stars svg{width:26px;height:26px;color:#e6ecf4}.result-stars .filled{color:#edb95d}.result-stars svg:nth-child(2){width:32px;height:32px;margin-top:-6px}.result-title{font-size:25px;line-height:1.4;letter-spacing:-.8px;margin:0 0 9px;font-weight:650}.result-description{font-size:11px;color:#96a2b3;line-height:1.8;margin:0}.result-stats{display:grid;grid-template-columns:repeat(3,1fr);background:#f8f9fc;border:1px solid #eef1f6;border-radius:16px;margin:22px 0;padding:13px 4px}.result-stat+.result-stat{border-left:1px solid #e9edf4}.result-stat b{display:block;font-size:17px;font-weight:580;font-variant-numeric:tabular-nums;color:#506785}.result-stat span{display:block;font-size:10px;color:#a1adbd;margin-top:5px}.result-actions{display:grid;gap:9px}.result-actions .secondary-button{height:42px}.lost-symbol{width:90px;height:90px;background:#fdf2f4;border:1px solid #fbe6ea;border-radius:27px;display:flex;align-items:center;justify-content:center;margin:7px auto 21px;color:#ec7d88}.lost-symbol svg{width:47px;height:47px}.lost-sheet{padding-top:34px}.continue-note{font-size:10px;color:#a8b2c0;margin:10px 0 4px}.rules-content{padding:2px 24px 22px}.rule{display:flex;gap:13px;margin:20px 0}.rule-num{width:25px;height:25px;flex-shrink:0;border-radius:9px;background:#f0f5fd;color:#7ca1d2;font-size:11px;display:flex;align-items:center;justify-content:center;font-weight:600}.rule h3{font-size:13px;font-weight:550;margin:2px 0 6px}.rule p{font-size:11px;line-height:1.95;margin:0;color:#92a0b3}.rules-foot{font-size:10px;line-height:1.9;color:#a4aebc;padding-top:15px;border-top:1px solid #eef2f7}.confetti{position:absolute;inset:0;z-index:30;pointer-events:none;overflow:hidden}.confetti i{position:absolute;top:-12px;width:6px;height:11px;opacity:0;border-radius:2px;animation:confetti-fall 1.5s ease-in forwards}
@keyframes confetti-fall{0%{opacity:0;transform:translateY(0) rotate(0)}10%{opacity:.8}100%{opacity:0;transform:translateY(700px) rotate(380deg)}}@keyframes sheet-in{from{opacity:0;transform:translateY(13px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes count-pop{50%{transform:scale(1.2)}}@keyframes heart-out{35%{transform:scale(.7)}70%{transform:scale(1.1)}}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;clip-path:inset(50%)}.boot-error{padding:30px;text-align:center;color:#7a889a;font-size:14px;line-height:1.8}
/* ===== 章节浏览（2000 关） ===== */
.levels-loading{grid-column:1/-1;text-align:center;color:#97a3b4;font-size:12px;padding:38px 0;letter-spacing:.5px}
.chapter-card{height:88px}
.chapter-card .level-number{font-size:19px}
.chapter-range{position:absolute;bottom:10px;left:11px;font-size:10px;color:#a5b0c0;font-variant-numeric:tabular-nums}
.chapter-head{grid-column:1/-1;display:flex;align-items:center;gap:12px;padding:2px 2px 10px;position:sticky;top:0;background:white;z-index:1}
.chapter-back{flex-shrink:0;padding:6px 11px;border-radius:9px;background:#f3f5f9;color:#6283af;font-size:11px;letter-spacing:.3px}
.chapter-back:hover{background:#eaf1fb;color:var(--blue)}
.chapter-title{font-size:12px;color:#8593a6;letter-spacing:.3px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.level-grid-inner{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr);gap:9px}

@media(min-width:1250px){.workspace{gap:130px;max-width:1000px}.intro h1{font-size:43px}.app{width:436px}}
@media(max-width:1000px){.workspace{justify-content:center;padding:18px;gap:0}.intro{display:none}.app{height:calc(100dvh - 36px)}}
@media(max-width:520px){body{background:white}.workspace{padding:0;min-height:100dvh}.app{width:100%;height:100dvh;min-height:480px;max-height:none;border:none;border-radius:0;box-shadow:none;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}.topbar{height:85px;padding-top:23px}.status-row{height:65px}.play-area{margin:0 7px}.tools-wrap{padding-left:22px;padding-right:22px}.footer-note{min-height:48px;padding-bottom:18px}.modal-layer{padding:14px}.sheet{max-width:400px}.intro{display:none}}
@media(max-height:720px){.topbar{height:71px;padding-top:15px}.status-row{height:55px}.tool{height:67px;border-radius:18px}.footer-note{min-height:38px;padding:12px 14px}.onboard{bottom:14px;font-size:11px}.stage-label{top:16px}.zoom-button{top:14px}.result-art{width:112px;height:112px;border-radius:24px;margin-bottom:12px}.result-art>svg{width:82px;height:82px}.result-sheet{padding:22px 23px 14px}.result-kicker{margin-bottom:12px}.result-stats{margin:17px 0}.result-title{font-size:23px}.toast{bottom:auto}}
@media(max-height:600px) and (min-width:521px){.app{min-height:480px}.workspace{padding:10px}.app{height:calc(100dvh - 20px)}.topbar{height:63px;padding-top:8px}.tool{height:60px}.footer-note{min-height:32px;padding:9px}.stage-label{font-size:10px;top:10px}.onboard{bottom:8px}.tools-wrap{padding-top:0}.status-row{height:45px}.intro{display:none}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}.confetti{display:none}}
body.reduce-motion *,body.reduce-motion *::before,body.reduce-motion *::after{animation-duration:.001ms!important;transition-duration:.001ms!important}body.reduce-motion .confetti{display:none}