:root{--bg:#f7f7f2;--paper:#fffefa;--ink:#233f35;--muted:#748174;--accent:#365e49;--accent-soft:#eaf0e4;--line:#dfe5d7;--gold:#aa8750;--gold-bg:#f7f0df;--danger:#a04936;--shadow:0 10px 28px #233f3508;--sans:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;--serif:Georgia,"Songti SC","Noto Serif CJK SC",serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.65 var(--sans)}[hidden]{display:none!important}button,input,select{font:inherit;color:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}a{color:inherit;text-decoration:none}button{border:0;background:none}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #91ae8a;outline-offset:3px}button,input,select{border-radius:9px}p{margin:0 0 12px}h1,h2,h3{line-height:1.3;margin:0 0 12px}h2{font-size:18px}h3{font-size:15px}small,.field-note{font-size:12px;line-height:1.7;color:var(--muted)}.field-note{margin:10px 0}.shell{width:min(1220px,100%);margin:auto;padding:0 32px}.skip{position:absolute;top:-100px}.skip:focus{top:8px;left:12px;z-index:50;background:white;padding:10px}.masthead{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:23px 0;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:700;letter-spacing:1px}.brand small{display:block;font-size:9px;letter-spacing:2px;font-weight:400;margin-top:1px}.brand-icon{display:grid;grid-template-columns:repeat(2,8px);gap:5px;padding:12px;background:var(--ink);border-radius:12px;transform:rotate(-5deg)}.brand-icon i{height:8px;border-radius:2px;background:#e9eed8}.brand-icon i:last-child{background:#a8be93}.masthead nav{display:flex;align-items:center;gap:23px;color:#637361;font-size:12px}.text-btn{padding:4px 0;color:#667c69;font-size:12px}.text-btn:hover,a:hover{color:var(--accent)}#historyCount{font-size:10px;margin-left:4px;opacity:.7}.intro{padding:38px 0 29px;display:flex;justify-content:space-between;align-items:center;gap:12px}.eyebrow{font-size:10px;letter-spacing:2px;color:#879879;font-weight:600;margin-bottom:15px}.intro h1{font-size:34px;letter-spacing:-1px}.intro h1 span{font-size:25px;color:#7c9274;font-weight:500}.intro p:last-child{color:var(--muted);font-size:13px;margin:0}.intro-mark{display:flex;gap:5px;transform:rotate(6deg);padding:0 12px}.intro-mark span{display:grid;place-items:center;background:#eef0e4;border:1px solid #dfe5d7;border-radius:8px;width:35px;height:48px;font:28px var(--serif);color:#85916d}.intro-mark span:nth-child(2){background:var(--ink);color:#f6f5e6;transform:translateY(5px)}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}.play-panel{background:var(--paper);border:1px solid var(--line);border-radius:21px;padding:25px;box-shadow:var(--shadow);min-width:0}.panel-top{display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding-bottom:17px;font-size:12px}.panel-top>div{display:flex;align-items:center;gap:8px}.status-dot{width:6px;height:6px;flex:none;background:#799771;border-radius:50%}.round-tag{font-size:10px;background:#f0f3e9;padding:4px 10px;border-radius:20px;white-space:nowrap;color:#7b876e}.panel-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;border-top:1px solid var(--line);padding-top:14px;margin-top:22px;font-size:10px;color:var(--muted)}.sidebar{display:grid;gap:18px}.side-card{border:1px solid var(--line);background:var(--paper);padding:22px;border-radius:17px;min-width:0}.section-label{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px}.section-label h2{font-size:14px;margin:0}.section-label>small{font-size:10px;color:#9da88c}.mode-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:3px;padding:4px;background:#f0f1ea;border-radius:10px}.mode-tabs button{font-size:12px;line-height:1.6;padding:8px 2px;white-space:nowrap}.mode-tabs button[aria-pressed=true]{background:var(--paper);box-shadow:0 1px 4px #1b3a2912;font-weight:600}.small-label{display:block;font-size:11px;color:var(--muted);margin:15px 0 9px}.level-options{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.level-options button{border:1px solid var(--line);text-align:left;padding:10px 8px}.level-options strong{font-size:12px}.level-options small{display:block;font-size:9px;white-space:nowrap;margin-top:3px}.level-options button[aria-pressed=true]{background:#eef3e7;border-color:#9eb48a}.check-line{display:flex;gap:7px;align-items:center;font-size:12px;margin:18px 0 15px;flex-wrap:wrap}.check-line input{accent-color:var(--accent);margin:0;width:15px;height:15px}.check-line span{font-size:10px;color:#8b957e}.select-label{display:flex;align-items:center;justify-content:space-between;font-size:12px;gap:10px}.select-label select{border:1px solid var(--line);background:white;font-size:12px;padding:8px 9px}.primary{background:var(--accent);color:#fffdf0;display:inline-flex;align-items:center;justify-content:center;gap:25px;padding:12px 19px;font-size:13px;line-height:1.5}.primary:hover{background:#274d3a}.secondary{display:inline-flex;align-items:center;justify-content:center;padding:11px 16px;border:1px solid var(--line);background:#fcfcf8;font-size:12px}.full{width:100%;margin-top:19px;justify-content:space-between}.settings-note{font-size:10px;margin-bottom:0}.welcome{text-align:center;padding:46px 10px 24px}.vault-code{display:flex;justify-content:center;gap:12px;margin-bottom:27px}.vault-code span{background:#f0f2e7;border:1px solid #dce3ce;border-radius:12px;width:68px;height:88px;display:grid;place-items:center;color:#6f8b6b;font:48px var(--serif)}.vault-code span:nth-child(2){transform:translateY(-7px);background:var(--ink);color:#ecf0d6}.vault-code span:nth-child(3){background:var(--gold-bg);color:var(--gold)}.welcome h2{font-size:31px;line-height:1.5;font-weight:500;letter-spacing:1px}.welcome p{font-size:13px;color:var(--muted);line-height:1.9;margin:16px 0 23px}.welcome-meta{display:flex;justify-content:center;flex-wrap:wrap;gap:22px;color:#8b987e;font-size:10px;margin-top:34px}.scoreboard{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:20px 0 15px;gap:18px}.scoreboard>div{border:1px solid var(--line);border-radius:12px;padding:12px 16px;background:#fafbf6}.scoreboard>div.current{border-color:#a3b68f;background:#eff4e9}.scoreboard span{font-size:11px;color:#75876f}.scoreboard strong{display:block;font-size:17px;margin:4px 0 2px}.scoreboard small{display:block;font-size:10px}.versus{font:italic 13px var(--serif);color:#acb29c!important}.curtain{text-align:center;padding:45px 15px 40px;min-height:430px;display:grid;justify-items:center;align-content:center;gap:9px;background:#f3f5ed;margin-top:16px;border-radius:14px}.curtain-symbol{font:48px var(--serif);color:#8da079}.curtain h2{font-size:23px}.curtain p:not(.eyebrow){font-size:13px;color:#788272;max-width:380px}.curtain small{margin-top:20px;max-width:340px;font-size:10px}.setup-help{padding:20px 0 12px}.setup-help h2{font-size:23px}.setup-help p:last-child{font-size:12px;color:var(--muted)}.code-form{margin:17px 0 0}.code-form>label{font-weight:600;font-size:13px;display:block;margin-bottom:10px}.entry-row{display:flex;align-items:stretch;gap:10px}.entry-row input{min-width:0;flex:1;width:100%;border:1px solid #bdcdb6;background:#fffef9;padding:11px 14px;font:24px/1.5 var(--sans);letter-spacing:9px;font-variant-numeric:tabular-nums}.entry-row input::placeholder{font-size:13px;letter-spacing:1px;color:#a0a999}.entry-row button{flex:none}.entry-extras{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:8px;flex-wrap:wrap}.entry-extras small{font-size:10px}#secretActions .text-btn{margin-left:10px}.error{font-size:12px;background:#fcf0e9;color:var(--danger);padding:9px;border-radius:8px;margin:9px 0}.keypad{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:5px;margin:14px 0 20px}.keypad button{border:1px solid var(--line);background:#f6f7ef;height:38px;min-width:0;padding:0;font-size:13px}.keypad button:last-child{font-size:10px}.keypad button:hover{background:#e9efdf}.feedback-box{margin:14px 0;padding:12px 15px;border:1px solid #d8e4cc;background:#f0f5e9;border-radius:10px;font-size:12px}.feedback-box b{margin-right:12px}.feedback-box .fb-digits{font:22px var(--serif);letter-spacing:4px}.thinking{display:flex;gap:15px;align-items:center;padding:23px 8px;color:#667f62}.thinking small{display:block;font-size:10px;margin-top:4px}.thinking strong{font-size:12px}.thinking-dots{font-size:30px;animation:pulse 1.2s ease-in-out infinite}.session-actions{border-top:1px solid var(--line);padding-top:12px;display:flex;flex-wrap:wrap;gap:18px;justify-content:flex-end}.danger{color:#996c56}.handover{width:100%;margin:16px 0}.clue-section{padding-top:18px}.clue-section .section-label h2{font-size:15px}.clue-section .section-label span{font-size:10px;color:var(--muted)}.clues{display:grid;gap:8px}.clue-row{display:grid;grid-template-columns:122px 1fr;align-items:center;gap:18px;border:1px solid var(--line);border-radius:11px;padding:12px 15px;background:#fafbf6}.clue-row b{font:30px var(--serif);letter-spacing:7px;font-variant-numeric:tabular-nums}.clue-row p{font-size:12px;margin:0;line-height:1.5}.clue-row small{display:block;font-size:10px;margin-top:4px}.notice{padding:10px 12px;background:var(--gold-bg);color:#8c713c;font-size:11px;border-radius:8px;line-height:1.75}.hint-box{margin:14px 0;background:#f8f1df;padding:12px;border-radius:10px;font-size:13px}.hint-box b{letter-spacing:8px;font:25px var(--serif)}.log-section{margin-top:25px}.log-head{display:grid;grid-template-columns:1fr 110px;gap:7px;padding:8px 9px;border-bottom:1px solid var(--line);font-size:10px;color:#8f9985;text-align:center}.log-head span:first-child{text-align:left}.log-row{display:grid;grid-template-columns:1fr 110px;gap:7px;align-items:center;padding:9px;border-bottom:1px solid #edf0e8;text-align:center}.log-row>div{display:flex;gap:16px;align-items:center;min-width:0}.log-row small{font-size:10px;min-width:15px}.log-row b{letter-spacing:5px;font-size:21px;font-weight:500;font-family:var(--serif);font-variant-numeric:tabular-nums}.log-row>span{font-size:13px;font-weight:600}.log-row>span:nth-child(2){color:#467051}.log-row.won{background:#edf4e7;border-radius:8px}.log-list{max-height:330px;overflow:auto;scrollbar-width:thin}.empty-log{padding:25px 10px;text-align:center;color:#929b88;font-size:12px}.ai-log{margin-top:15px;border-top:1px solid var(--line);padding-top:12px}.ai-log summary{cursor:pointer;font-size:12px;color:#708069}.ai-log .log-list{margin-top:10px}.rule-example{border-radius:12px;padding:1px 13px 14px;background:#f5f6ee}.rule-example>div:nth-child(2){display:flex;justify-content:space-between;align-items:center;gap:9px}.rule-example b{font:24px var(--serif);letter-spacing:3px}.rule-example>div>span{color:#a5b099}.feedback-demo{display:flex;justify-content:space-between;margin-top:15px;border-top:1px solid var(--line);padding-top:12px;gap:8px}.feedback-demo>span{font-size:10px;color:#78896b!important}.feedback-demo strong{font-size:20px;margin-right:3px;font-family:var(--serif);color:var(--accent)}.notes{display:grid;grid-template-columns:repeat(5,1fr);gap:7px;margin-bottom:12px}.notes button{height:35px;border:1px solid var(--line);font:18px var(--serif);background:#f9faf5}.notes button[data-state="out"]{text-decoration:line-through;color:#b0b5a9;background:#efefe9}.notes button[data-state="in"]{background:#e7efdd;border-color:#9caf8c;color:#3d633f}.result-panel{text-align:center;padding:24px 0 15px}.unlock-mark{margin:10px auto 20px;display:grid;place-items:center;width:60px;height:60px;border-radius:50%;background:#e5eddd;color:#4d6e42;font:32px var(--serif);animation:unlock .6s ease-out}.result-panel h2{font-size:30px}.result-panel>p:not(.eyebrow){color:var(--muted)}.revealed-codes{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:24px 0}.revealed-codes.single{grid-template-columns:1fr;max-width:250px;margin:24px auto}.revealed-codes>div{padding:17px 12px;border-radius:12px;background:#f1f4e9}.revealed-codes small{display:block;font-size:11px}.revealed-codes strong{display:block;font:33px var(--serif);letter-spacing:8px;padding-left:8px}.result-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-bottom:18px}.about{display:grid;grid-template-columns:1fr 1fr;gap:60px;border-top:1px solid var(--line);margin-top:45px;padding-top:30px;font-size:12px;color:#83907d;line-height:1.9}.about h2{font-size:20px;color:#425c49}.about h3{color:#60765f;margin-top:8px;font-size:14px}.about .eyebrow{font-size:9px}footer{margin-top:30px;border-top:1px solid var(--line);padding:20px 0 30px;display:flex;justify-content:space-between;gap:15px;align-items:center;font-size:10px;color:#899580}footer>div{display:flex;gap:20px;align-items:center}footer button{font-size:10px!important}dialog{border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:18px;padding:28px;width:min(620px,calc(100vw - 30px));max-height:88vh;overflow:auto;box-shadow:0 25px 100px #172d3440}dialog::backdrop{background:#24382b80}dialog p{font-size:13px;line-height:1.85;color:#6d7c65}dialog h3{margin-top:24px}.dialog-head{display:flex;gap:15px;justify-content:space-between;align-items:center;margin-bottom:14px}.dialog-head h2{margin:0;font-size:20px}.close{font-size:27px;line-height:1;padding:5px}.modal-example{background:#f2f5e9;padding:15px;border-radius:10px}.modal-example p{margin:5px 0 0}.confirm-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}.history-row{border:1px solid var(--line);border-radius:11px;padding:13px 15px;margin-top:10px;display:flex;align-items:center;justify-content:space-between;gap:12px}.history-row strong{font-size:13px}.history-row small{display:block;font-size:10px}.review-dialog{width:min(800px,calc(100vw - 30px))}.review-columns{display:grid;grid-template-columns:1fr 1fr;gap:24px}.review-columns h3{margin-top:4px}.review-columns .log-row,.review-columns .log-head{grid-template-columns:1fr 94px}#toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);background:#264332;color:#fff;padding:11px 18px;border-radius:10px;font-size:12px;max-width:calc(100vw - 30px);width:max-content;z-index:50;box-shadow:var(--shadow)}
@keyframes pulse{50%{opacity:.3}}@keyframes unlock{from{transform:scale(.7) rotate(-20deg);opacity:0}to{transform:none;opacity:1}}
@media(min-width:1450px){.shell{width:1280px}.workspace{grid-template-columns:minmax(0,1fr) 320px}.welcome{padding-top:65px;padding-bottom:45px}}
@media(max-width:950px){.shell{padding:0 24px}.workspace{grid-template-columns:minmax(0,1fr) 270px;gap:18px}.side-card{padding:18px}.play-panel{padding:20px}.intro h1{font-size:30px}.intro h1 span{font-size:22px}.intro-mark{display:none}.keypad{grid-template-columns:repeat(6,1fr)}.keypad button{height:36px}.scoreboard{gap:10px}.scoreboard>div{padding:11px}.log-row,.log-head{grid-template-columns:1fr 100px}}
@media(max-width:730px){.shell{padding:0 18px}.masthead{padding:18px 0}.brand{font-size:17px;gap:9px}.brand small{font-size:8px;letter-spacing:1px}.brand-icon{padding:10px}.masthead nav{gap:13px;font-size:11px}.masthead nav .text-btn{font-size:11px}.intro{padding:29px 0 23px}.intro h1{font-size:29px}.intro h1 span{display:block;margin-top:5px;font-size:23px}.intro p:last-child{font-size:12px}.eyebrow{font-size:9px}.workspace{grid-template-columns:1fr}.sidebar{grid-template-columns:1fr 1fr;gap:14px}.sidebar>.side-card:first-child{grid-column:1 / -1}.side-card{padding:20px}.level-options small{font-size:11px}.level-options strong{font-size:13px}.level-options button{padding:12px}.welcome{padding:33px 0 17px}.welcome h2{font-size:27px}.welcome-meta{font-size:9px;gap:12px}.panel-top{font-size:11px}.about{gap:25px;font-size:11px}.about h2{font-size:17px}footer{flex-wrap:wrap}.entry-row input{font-size:24px;letter-spacing:8px}.entry-row button{font-size:12px;padding:11px 14px}.curtain{min-height:370px}}
@media(max-width:440px){.shell{padding:0 14px}.brand small{display:none}.brand{font-size:16px}.brand-icon{grid-template-columns:repeat(2,6px);padding:9px;gap:4px}.brand-icon i{height:6px}.masthead nav{gap:11px}.masthead nav a{font-size:10px}.play-panel{padding:18px 14px}.sidebar{grid-template-columns:1fr}.sidebar>.side-card:first-child{grid-column:auto}.side-card{padding:19px}.scoreboard{gap:8px}.scoreboard>div{padding:9px 10px}.scoreboard strong{font-size:16px}.scoreboard small{font-size:9px}.entry-row{gap:7px}.entry-row input{padding:10px;min-width:0;letter-spacing:6px;font-size:23px}.entry-row button{padding:12px 11px;gap:5px;font-size:11px}.clue-row{grid-template-columns:98px 1fr;gap:9px;padding:11px 10px}.clue-row b{font-size:26px;letter-spacing:5px}.clue-row p{font-size:11px}.clue-row small{font-size:9px}.log-head,.log-row{grid-template-columns:1fr 94px}.log-row b{font-size:20px}.session-actions{gap:15px}.session-actions .text-btn{font-size:11px}.about{grid-template-columns:1fr;gap:12px}.vault-code{gap:8px}.vault-code span{width:57px;height:74px;font-size:40px}.review-columns{grid-template-columns:1fr}.revealed-codes strong{font-size:29px;letter-spacing:5px}.curtain h2{font-size:20px}.curtain .primary{font-size:12px}dialog{padding:20px}.intro h1 span{font-size:21px}.history-row{padding:11px}.result-panel h2{font-size:25px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}

body.standalone .site-only{display:none}

.intro h1 span::before{content:"，"}@media(max-width:730px){.intro h1 span::before{content:""}.keypad button,.mode-tabs button{min-height:42px}.notes button{height:42px}}

/* v1.1: a single count, no separate digit-total or position detail columns. */
.feedback-demo{justify-content:flex-start}.feedback-demo strong{font-size:19px;margin-left:6px}.clue-row p{font-weight:600;color:var(--accent)}#legacyNotice{margin:0 0 18px}.log-head span:last-child,.log-row>span{white-space:nowrap}