:root{font-family:DM Sans,Microsoft YaHei,PingFang SC,sans-serif;color:#28332e;background:#f5f6f3;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}button:focus-visible,input:focus-visible{outline:3px solid #c9a374;outline-offset:2px}.app-shell{display:flex;min-height:100vh}.sidebar{width:248px;flex-shrink:0;background:#263b32;color:#f6f5ed;display:flex;flex-direction:column;padding:31px 21px 25px;min-height:100vh;position:sticky;top:0;height:100vh;z-index:30}.brand{display:flex;align-items:center;gap:11px;padding:5px 8px}.brand strong{font-size:20px;font-family:"Noto Serif SC",SimSun,serif;font-weight:600;letter-spacing:.055em;display:block}.brand small{font-size:9px;letter-spacing:.175em;color:#aabbad;font-weight:700;margin-top:4px;display:block}.brand-mark{display:grid;grid-template-columns:repeat(3,10px);grid-template-rows:repeat(3,10px);border:1px solid #c1ccbb;border-radius:3px;overflow:hidden;color:#e8eee4;flex-shrink:0}.brand-mark span{font-family:Georgia,serif;font-size:8px;line-height:10px;text-align:center;border-right:1px solid #778b7d;border-bottom:1px solid #778b7d}.brand-mark span:nth-child(3n){border-right:none}.brand-mark span:nth-child(n+7){border-bottom:none}.nav-heading{color:#9eb2a4;font-size:10px;font-weight:700;letter-spacing:.19em;margin:64px 14px 17px}.main-nav{display:flex;flex-direction:column;gap:7px}.nav-link{width:100%;height:46px;border:0;background:transparent;border-radius:8px;color:#bfcfc3;padding:0 13px;text-align:left;display:flex;gap:15px;align-items:center;font-size:13px;font-weight:500;transition:background .15s,color .15s}.nav-link:hover{color:#fff;background:#354d40}.nav-link.active{color:#f9f7f0;background:#3d5746;font-weight:700}.nav-icon{width:19px;text-align:center;font-size:21px;line-height:1}.tiny-grid{display:inline-block;transform:translateY(-2px)}.active-dot{margin-left:auto;width:5px;height:5px;border-radius:50%;background:#d4c096}.sidebar-bottom{margin-top:auto}.sidebar-card{border:1px solid #516759;border-radius:9px;padding:24px 19px 21px;position:relative;background:linear-gradient(145deg,#324d3e,#2a4035);overflow:hidden}.sidebar-card-ornament{position:absolute;right:18px;top:7px;font-size:57px;font-family:Georgia,serif;color:#59705e;line-height:1}.eyebrow{font-size:10px;color:#c5cebd;letter-spacing:.09em;position:relative}.sidebar-card p{font-family:"Noto Serif SC",serif;font-size:15px;letter-spacing:.07em;line-height:2;margin:14px 0 18px;position:relative}.card-line{width:27px;height:2px;display:block;background:#c9ab78}.sidebar-footer{color:#94a99b;font-size:11px;display:block;padding:20px 12px 0;letter-spacing:.06em}.main-content{flex:1;min-width:0}.topbar{height:70px;border-bottom:1px solid #e6e9e3;padding:0 46px;background:#fafbf9;display:flex;justify-content:space-between;align-items:center}.breadcrumb{display:flex;align-items:center;gap:12px;color:#8b9690;font-size:12px}.breadcrumb strong{font-weight:600;color:#34473c}.breadcrumb-separator{color:#c3cbc2}.topbar-right{display:flex;align-items:center;gap:24px}.topbar-date{font-size:11px;color:#89988c;letter-spacing:.04em}.avatar{width:32px;height:32px;display:grid;place-items:center;border-radius:50%;background:#e2eadd;font-family:"Noto Serif SC",serif;color:#4f6c4d;font-size:14px}.mobile-menu{display:none;border:none;background:none;color:#34473c;padding:4px}.content-wrap{max-width:1320px;padding:0 53px;margin:0 auto}.welcome{margin-top:32px;height:184px;background:#e7eee6;border:1px solid #dae5d8;border-radius:10px;padding:32px 43px;display:flex;justify-content:space-between;position:relative;overflow:hidden}.welcome:after{content:"";width:340px;height:340px;border:1px solid #d0dfcf;border-radius:50%;position:absolute;right:-55px;bottom:-300px;box-shadow:0 0 0 55px #dae6d873,0 0 0 115px #dae6d842}.welcome-copy{position:relative;z-index:1}.section-kicker{color:#687f6c;font-size:11px;font-weight:700;letter-spacing:.16em;display:flex;align-items:center;gap:9px}.kicker-line{width:20px;height:1px;background:#829f7f}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-family:"Noto Serif SC",SimSun,serif;font-weight:600}.welcome h1{color:#294337;font-size:clamp(22px,2.2vw,31px);margin:19px 0 11px;letter-spacing:.035em}.welcome h1 em{font-style:normal;color:#638061}.welcome p{color:#697f6e;font-size:12px;letter-spacing:.075em}.welcome-decoration{z-index:1;padding-right:29px;align-self:center;transform:rotate(-12deg)}.decor-grid{display:grid;grid-template-columns:repeat(3,41px);grid-template-rows:repeat(3,41px);border:2px solid #9cbaa1;opacity:.61;box-shadow:12px 13px #7ca1841f}.decor-grid i{border:1px solid #9cbaa1;font: 22px/39px Georgia,serif;text-align:center;color:#63866c}.workspace-head{display:flex;justify-content:space-between;align-items:end;margin:32px 0 19px}.section-index{font-size:10px;color:#9aab9c;letter-spacing:.17em;font-weight:700;display:block}.workspace-head h2{font-size:20px;margin:6px 0 0;color:#2b3830;letter-spacing:.025em}.workspace-actions{display:flex;gap:9px}.subtle-button{background:#fff;border:1px solid #e5e9e2;border-radius:7px;height:35px;color:#496350;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 13px;font-size:12px;font-weight:600;transition:border-color .18s,background .18s}.subtle-button:hover{border-color:#9db7a2;background:#f1f7ef}.more-button{padding:0;width:35px}.game-layout{display:grid;grid-template-columns:minmax(380px,1.25fr) minmax(270px,.75fr);gap:22px;align-items:start}.game-column,.panel{background:#fff;border:1px solid #e9ece5;border-radius:10px;box-shadow:0 5px 23px #1e382006}.game-column{padding:20px 27px 15px}.game-meta{max-width:540px;margin:auto auto 17px;display:flex;align-items:center;justify-content:space-between;gap:12px}.meta-group{display:flex;align-items:center;gap:13px}.difficulty-badge{display:inline-flex;align-items:center;gap:7px;background:#e9f1e7;color:#48704d;border-radius:4px;padding:7px 9px;font-size:11px;font-weight:700;white-space:nowrap}.badge-dot{width:5px;height:5px;border-radius:50%;background:#6d9a6d}.meta-divider{height:18px;width:1px;background:#e4e8e2}.timer{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:#69746c;font-variant-numeric:tabular-nums}.progress-label{font-size:11px;color:#8b978f;white-space:nowrap}.progress-label strong{color:#3b5941;font-weight:700}.board-frame{width:100%;max-width:540px;margin:auto;border:2px solid #385647;border-radius:3px;overflow:hidden;box-shadow:0 2px 6px #2a4b340d}.board{aspect-ratio:1;display:grid;grid-template-columns:repeat(9,minmax(0,1fr));grid-template-rows:repeat(9,minmax(0,1fr));background:#fff}.cell{min-width:0;min-height:0;border:0;border-right:1px solid #dbe3d9;border-bottom:1px solid #dbe3d9;display:flex;justify-content:center;align-items:center;background:#fff;position:relative;padding:0;font-family:DM Sans,Arial,sans-serif;transition:background .12s}.cell:nth-child(9n){border-right:none}.cell:nth-child(n+73){border-bottom:none}.cell.box-right{border-right:2px solid #486450}.cell.box-bottom{border-bottom:2px solid #486450}.cell:hover{background:#ebf3ec}.cell.peer{background:#f1f5ef}.cell.same-digit{background:#dfeee0}.cell.selected{background:#9bc39f;box-shadow:inset 0 0 0 2px #4b8357;z-index:1}.cell.selected.same-digit{background:#9bc39f}.cell-value{font-size:clamp(17px,2.4vw,29px);font-weight:500;line-height:1;font-variant-numeric:tabular-nums}.cell.given .cell-value{color:#2b3f32;font-weight:700}.cell.entered .cell-value{color:#477d59}.cell.error .cell-value{color:#b34e49}.cell.error{background:#fff0ed}.cell.selected.error{background:#f3b7ad}.error-indicator{width:4px;height:4px;position:absolute;right:3px;top:3px;border-radius:50%;background:#c75347}.note-grid{width:100%;height:100%;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);align-items:center;text-align:center;color:#6b9a72;font-size:clamp(7px,.8vw,10px);line-height:1}.board-bottom{max-width:540px;margin:12px auto 0;display:flex;justify-content:space-between;gap:8px;color:#9aa69d;font-size:10px}.board-bottom>span:first-child{display:flex;align-items:center;gap:6px}.legend-dot{display:inline-block;border-radius:50%;width:6px;height:6px;margin-left:5px}.given-dot{background:#344c3c;margin-left:0}.user-dot{background:#74a378}.mobile-keypad{max-width:540px;margin:25px auto 0}.keypad-label{display:flex;justify-content:space-between;align-items:center;font-size:12px;font-weight:700;color:#354c3c;margin-bottom:11px}.keypad-label span{color:#a2ada5;font-size:10px;font-weight:400}.keypad{display:grid;grid-template-columns:repeat(9,minmax(0,1fr));gap:6px}.keypad button{padding:7px 0 5px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#f5f8f3;border:1px solid #ecf1ea;border-radius:6px;color:#365d42;min-height:56px;transition:background .15s,border-color .15s,transform .15s}.keypad button:hover:not(:disabled){background:#e4f1e4;border-color:#a8c8ad;transform:translateY(-2px)}.keypad strong{font-size:20px;line-height:1.2;font-weight:600}.keypad small{color:#9aab9d;font-size:9px;margin-top:3px;font-variant-numeric:tabular-nums}.toolbar{max-width:540px;margin:17px auto 0;display:flex;justify-content:space-around;border-top:1px solid #eff1ed;padding:14px 0 2px}.toolbar button{flex:1;background:none;border:none;color:#77877c;font-size:10px;display:flex;align-items:center;gap:5px;flex-direction:column;padding:0}.toolbar button:hover:not(:disabled),.toolbar button.tool-active{color:#376545}.tool-icon{display:grid;place-items:center;height:29px}.toolbar small{color:#80a083;font-size:9px}.success-banner{margin:15px auto 0;max-width:540px;background:#eaf4e9;color:#2f6844;border:1px solid #c8e3cb;padding:13px 17px;border-radius:7px;display:flex;align-items:center;gap:12px}.success-banner div{flex:1;display:flex;flex-direction:column;gap:3px;font-size:12px}.success-banner span{font-size:10px;color:#63846b}.game-aside{display:flex;flex-direction:column;gap:17px}.panel{padding:22px 23px}.panel-heading{display:flex;align-items:start;justify-content:space-between}.panel-heading h3{font-size:17px;margin:8px 0 0;color:#2d3930}.panel-symbol{background:#eef4ed;width:26px;height:26px;display:grid;place-items:center;color:#7e9b80;border-radius:6px;font-size:17px;font-weight:700;font-family:Georgia,serif}.panel-description{color:#8b978e;font-size:11px;line-height:1.7;margin:12px 0 17px}.number-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.number-tile{display:flex;align-items:center;flex-direction:column;justify-content:center;gap:5px;min-height:74px;background:#f7f9f5;border:1px solid #edf1e9;border-radius:6px;color:#344a3b;transition:border-color .15s,background .15s,transform .15s}.number-tile:hover{background:#e7f1e7;border-color:#bdd2bd;transform:translateY(-1px)}.number-tile.number-active{background:#e0eee1;border-color:#82ad87;box-shadow:inset 0 0 0 1px #8cb591}.number-tile.number-complete .number-big{color:#88aa8a}.number-big{font-family:Georgia,serif;font-size:27px;line-height:1.1}.number-count{font-size:10px;color:#9aaa9d;display:flex;align-items:center;gap:3px;font-variant-numeric:tabular-nums}.panel-foot{margin-top:15px;border-top:1px solid #f0f2ee;padding-top:13px;color:#a1aaa1;font-size:10px;display:flex;align-items:center;gap:6px}.tip-icon{color:#87a68c;display:grid;place-items:center}.sparkle-icon{color:#95b498}.new-game-panel{padding-bottom:19px}.select-wrap{position:relative;margin-bottom:11px}.difficulty-select{width:100%;min-height:58px;border:1px solid #e3eae1;border-radius:6px;padding:9px 12px;text-align:left;background:#fbfcfa;color:#3a4b3e;display:flex;align-items:center;justify-content:space-between}.difficulty-select:hover{border-color:#a1bea4}.select-label{display:block;color:#9aa89b;font-size:10px;margin-bottom:4px}.difficulty-select strong{font-size:13px}.difficulty-menu{position:absolute;z-index:10;top:calc(100% + 5px);left:0;right:0;padding:5px;background:#fff;border:1px solid #dbe6d8;border-radius:7px;box-shadow:0 16px 34px #1a342326}.difficulty-choice{width:100%;display:flex;justify-content:space-between;align-items:center;background:#fff;border:none;border-radius:5px;padding:8px 10px;text-align:left;color:#405247}.difficulty-choice:hover,.difficulty-choice.active-choice{background:#ecf4eb}.difficulty-choice span{display:flex;flex-direction:column;gap:2px}.difficulty-choice strong{font-size:12px}.difficulty-choice small{font-size:10px;color:#91a295}.primary-button{min-height:42px;width:100%;background:#405d48;border:1px solid #405d48;border-radius:6px;color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;gap:8px;transition:background .15s,transform .15s}.primary-button:hover:not(:disabled){background:#2c4937;transform:translateY(-1px)}.new-game-note{font-size:10px;color:#adb5ab;line-height:1.55;text-align:center;margin:10px 0 0}.small-tip{border-radius:8px;background:#eef2eb;border:1px solid #e3eae0;color:#718775;padding:14px 17px;display:flex;gap:11px;align-items:start}.tip-glyph{font-size:18px;color:#91ac90}.small-tip p{font-size:11px;line-height:1.75;margin:0}.small-tip strong{color:#497052}.page-footer{padding:34px 0 26px;font-size:10px;color:#aeb9ad;display:flex;justify-content:space-between}.toast{position:fixed;z-index:200;left:50%;bottom:26px;transform:translate(-50%);background:#263b32;color:#f6f9f4;box-shadow:0 12px 36px #1e312438;border-radius:7px;padding:12px 15px;display:flex;align-items:center;gap:10px;font-size:12px;max-width:calc(100vw - 30px);min-width:240px}.toast>svg{color:#b1d4aa;flex-shrink:0}.toast button{border:none;background:none;color:#e6f3e2;margin-left:auto;padding:0;display:flex}.modal-backdrop{position:fixed;z-index:100;inset:0;background:#13231a87;display:grid;place-items:center;padding:20px}.modal{position:relative;width:100%;max-height:min(94vh,1000px);overflow-y:auto;border-radius:12px;background:#fff;padding:29px 34px 32px;box-shadow:0 30px 75px #0c241540}.modal-close{position:absolute;right:20px;top:20px;border:0;background:#f2f5f0;border-radius:6px;padding:6px;display:grid;color:#5e7061}.modal h2{font-size:24px;margin:10px 0 8px;color:#294336}.modal-intro{font-size:12px;color:#889689;line-height:1.85;margin:0}.import-modal{max-width:860px}.import-heading{margin-bottom:22px;padding-right:30px}.import-body{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,1fr);gap:29px}.dropzone{border:1.5px dashed #bdd2bf;background:#f6faf5;border-radius:7px;overflow:hidden}.dropzone:hover{background:#edf5ec}.upload-area{width:100%;min-height:142px;padding:17px 10px;border:0;background:transparent;display:flex;flex-direction:column;justify-content:center;align-items:center;color:#395b42;gap:5px}.upload-icon{display:grid;place-items:center;width:37px;height:37px;border-radius:8px;background:#e6f0e4;margin-bottom:4px}.upload-area strong{font-size:12px}.upload-area small{font-size:10px;color:#9ba99b}.preview-card{margin-top:17px;border:1px solid #e9eee6;border-radius:7px;padding:10px}.preview-title{display:flex;gap:10px;justify-content:space-between;align-items:center;color:#526859;font-size:10px;margin-bottom:9px;overflow-wrap:anywhere}.preview-title span{color:#a5b4a5;white-space:nowrap}.preview-card img{width:100%;max-height:290px;object-fit:contain;background:#f5f6f3;border-radius:4px;display:block}.image-tip{margin:14px 0 0;color:#899b8b;display:flex;gap:7px;font-size:10px;line-height:1.75}.image-tip svg{flex-shrink:0;margin-top:1px}.review-title{display:flex;justify-content:space-between;align-items:start;gap:10px;margin:0 0 11px}.review-title div{display:flex;flex-direction:column;gap:4px}.review-title strong{font-size:13px;color:#314638}.review-title span{color:#a3afa4;font-size:10px}.recognized-count{color:#658a6a!important;white-space:nowrap;font-weight:600}.review-grid{display:grid;grid-template-columns:repeat(9,minmax(0,1fr));width:min(100%,353px);aspect-ratio:1;border:2px solid #42604c;background:#fff}.review-grid input{width:100%;height:100%;min-width:0;min-height:0;border:0;border-right:1px solid #d9e4d7;border-bottom:1px solid #d9e4d7;text-align:center;border-radius:0;background:#fff;outline:0;font-size:clamp(14px,2vw,21px);font-weight:600;color:#3f7150;padding:0}.review-grid input:nth-child(9n){border-right:none}.review-grid input:nth-child(n+73){border-bottom:none}.review-grid input.box-right{border-right:2px solid #42604c}.review-grid input.box-bottom{border-bottom:2px solid #42604c}.review-grid input:focus{background:#cce6d1;outline:2px solid #4c9159;outline-offset:-2px;z-index:1}.review-grid input.review-uncertain{background:#fff5df;color:#9c691e}.review-grid input.review-error{background:#fce5e1;color:#b63e39}.review-key{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin:10px 0 14px;color:#9caa9e;font-size:10px}.review-key span{display:flex;align-items:center;gap:5px}.review-key i{height:8px;width:8px;border-radius:2px}.key-uncertain{background:#f6d795}.key-conflict{background:#eda69e}.import-loading,.import-status{display:flex;align-items:center;gap:8px;font-size:10px;line-height:1.5;padding:8px;background:#f2f7f0;color:#5c825e;margin-bottom:9px;border-radius:4px}.import-status.import-warning{background:#fff5df;color:#8f5e1b;border:1px solid #e6c786}.spinner{display:inline-block;flex-shrink:0;width:13px;height:13px;border:2px solid #b2cfb4;border-top-color:#4b7952;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.import-error{font-size:11px;background:#fff1ec;color:#9e4b36;border:1px solid #f1c5b9;padding:9px;border-radius:4px;line-height:1.6;margin-bottom:11px}.import-confirm{width:min(100%,353px)}.import-footnote{width:min(100%,353px);font-size:10px;color:#a6b1a7;line-height:1.65;margin:10px 0 0}.help-modal{max-width:520px}.help-list{margin:22px 0;display:flex;flex-direction:column;gap:10px}.help-list div{display:flex;gap:15px;padding:12px;border:1px solid #ecf0e8;border-radius:6px;background:#fafcf9}.help-list div>span{font:18px Georgia,serif;color:#8fb192}.help-list p{font-size:11px;line-height:1.8;margin:0;color:#86968b}.help-list strong{color:#355b3e;font-size:12px;display:block;margin-bottom:2px}.sidebar-scrim{display:none}@media(max-width:1100px){.sidebar{width:220px}.content-wrap{padding:0 30px}.game-layout{grid-template-columns:minmax(340px,1.15fr) minmax(240px,.85fr);gap:16px}.panel,.game-column{padding:18px}.number-tile{min-height:66px}}@media(max-width:850px){.sidebar{width:190px;padding:27px 12px 20px}.brand{gap:8px}.brand strong{font-size:17px}.brand small{font-size:8px}.sidebar-card{padding:18px 12px}.content-wrap{padding:0 20px}.topbar{padding:0 22px}.game-layout{grid-template-columns:minmax(0,1fr)}.game-aside{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.small-tip{grid-column:1 / -1}.welcome-decoration{padding-right:0}}@media(max-width:650px){.sidebar{position:fixed;left:0;top:0;width:250px;transform:translate(-105%);transition:transform .22s;box-shadow:10px 0 35px #00000021}.sidebar.sidebar-open{transform:translate(0)}.sidebar-scrim{display:block;z-index:20;position:fixed;inset:0;background:#1d2d2052;border:0}.main-content{width:100%}.topbar{height:54px;padding:0 16px}.topbar-date{display:none}.topbar-right{gap:13px}.mobile-menu{display:grid;place-items:center}.avatar{width:28px;height:28px;font-size:12px}.content-wrap{padding:0 15px}.welcome{margin-top:18px;height:146px;padding:26px 22px}.welcome h1{font-size:23px;margin:14px 0 9px}.welcome p{font-size:10px}.section-kicker{font-size:9px}.decor-grid{grid-template-columns:repeat(3,28px);grid-template-rows:repeat(3,28px)}.decor-grid i{font-size:15px;line-height:27px}.welcome-decoration{margin-right:-9px;opacity:.75}.workspace-head{margin:25px 0 13px}.workspace-head h2{font-size:17px}.workspace-actions .subtle-button:first-child{padding:0 8px;font-size:10px}.game-column{padding:15px 12px 14px}.game-meta{margin-bottom:12px}.cell-value{font-size:clamp(17px,6vw,28px)}.note-grid{font-size:clamp(6px,2vw,10px)}.keypad{gap:3px}.keypad button{min-height:51px}.keypad strong{font-size:18px}.keypad small{font-size:8px}.game-aside{grid-template-columns:1fr}.number-grid{grid-template-columns:repeat(9,minmax(0,1fr));gap:4px}.number-tile{min-height:54px;gap:2px}.number-big{font-size:21px}.number-count{font-size:8px}.panel{padding:17px}.small-tip{grid-column:auto}.page-footer{padding:23px 0}.modal{padding:24px 19px}.modal-backdrop{padding:10px}.import-body{display:flex;flex-direction:column;gap:21px}.import-modal{max-height:95vh}.preview-card img{max-height:210px}.review-grid,.import-confirm,.import-footnote{margin-left:auto;margin-right:auto}.review-title{max-width:353px;margin-left:auto;margin-right:auto}.review-key{justify-content:center}}@media(max-width:390px){.welcome-decoration{display:none}.progress-label{font-size:9px}.game-column{padding:12px 8px}.workspace-actions .more-button{display:none}.cell-value{font-size:18px}.number-count{font-size:7px}.number-big{font-size:18px}.number-tile{min-height:48px}.modal{padding:22px 12px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}