:root{color-scheme:light;font-family:Inter,Pretendard,Noto Sans KR,Apple SD Gothic Neo,system-ui,sans-serif;font-synthesis:none;--ink: #17312d;--ink-soft: #51635f;--green: #167268;--green-dark: #0f514a;--green-pale: #e4f0ed;--coral: #df5147;--coral-pale: #fbe8e4;--line: #d6dfdc;--surface: #ffffff;--page: #eef3f1;--wood: #d5a35d;--shadow: 0 16px 42px rgba(26, 52, 47, .14);color:var(--ink);background:var(--page)}*{box-sizing:border-box;letter-spacing:0}html{min-width:320px;min-height:100%;background:var(--page)}body{margin:0;min-width:320px;min-height:100vh;min-height:100dvh;background:var(--page)}button,canvas{-webkit-tap-highlight-color:transparent}button{font:inherit}button[hidden]{display:none!important}button:focus-visible,canvas:focus-visible{outline:3px solid rgba(223,81,71,.46);outline-offset:3px}svg{width:18px;height:18px;stroke-width:2;flex:0 0 auto}#app{min-height:100vh;min-height:100dvh;padding:env(safe-area-inset-top) max(18px,env(safe-area-inset-right)) max(24px,env(safe-area-inset-bottom)) max(18px,env(safe-area-inset-left))}.topbar{width:min(1240px,100%);min-height:78px;margin:0 auto;display:grid;grid-template-columns:minmax(180px,1fr) auto minmax(180px,1fr);align-items:center;gap:18px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:11px;min-width:0}.brand-board{position:relative;display:grid;grid-template-columns:repeat(2,11px);grid-template-rows:repeat(2,11px);width:40px;height:40px;padding:8px;border:1px solid #8a5e2d;border-radius:6px;background-color:var(--wood);box-shadow:inset 0 0 0 1px #fff4db66}.brand-board:before,.brand-board:after{content:"";position:absolute;background:#3f270eb3}.brand-board:before{top:8px;bottom:8px;left:50%;width:1px}.brand-board:after{left:8px;right:8px;top:50%;height:1px}.brand-board i{position:relative;z-index:1;width:8px;height:8px;border-radius:50%;background:#131a18;transform:translate(7px,7px);box-shadow:0 1px 2px #00000052}.brand-board i:nth-child(n+2){display:none}.brand-copy{display:flex;align-items:baseline;gap:8px;min-width:0}.brand h1{margin:0;font-family:Georgia,"Noto Serif KR",serif;font-size:28px;line-height:1;font-weight:800}.brand-copy span{color:var(--ink-soft);font-size:12px;font-weight:700;white-space:nowrap}.mode-tabs{display:grid;grid-template-columns:repeat(3,minmax(88px,1fr));padding:4px;border:1px solid var(--line);border-radius:8px;background:#ffffffb8}.mode-tabs button{min-height:40px;padding:0 13px;display:inline-flex;align-items:center;justify-content:center;gap:7px;border:0;border-radius:5px;color:var(--ink-soft);background:transparent;font-size:13px;font-weight:750;white-space:nowrap;cursor:pointer}.mode-tabs button:hover{color:var(--ink);background:#edf3f1}.mode-tabs button.selected{color:#fff;background:var(--green-dark);box-shadow:0 3px 8px #0f514a33}.toolbar{justify-self:end;display:flex;align-items:center;gap:7px}.icon-button{width:40px;height:40px;padding:0;display:inline-grid;place-items:center;border:1px solid var(--line);border-radius:7px;color:var(--ink);background:var(--surface);cursor:pointer}.icon-button:hover:not(:disabled){color:var(--green-dark);border-color:#9ab8b1;background:var(--green-pale)}.icon-button:disabled{opacity:.36;cursor:not-allowed}.game-layout{width:min(1240px,100%);margin:22px auto 0;display:grid;grid-template-columns:minmax(0,1fr) minmax(310px,356px);align-items:start;gap:clamp(24px,4vw,58px)}.board-stage{min-width:0;display:flex;flex-direction:column;align-items:center}.turn-strip{width:min(100%,760px);min-height:43px;padding:0 3px;display:flex;align-items:center;justify-content:space-between;gap:12px}.turn-main{min-width:0;display:flex;align-items:center;gap:9px}.turn-main strong{overflow:hidden;font-size:15px;text-overflow:ellipsis;white-space:nowrap}.move-count{color:var(--ink-soft);font-size:12px;font-weight:700;white-space:nowrap}.mini-stone{display:inline-block;width:18px;height:18px;flex:0 0 18px;border-radius:50%;box-shadow:0 1px 3px #121d1b47}.mini-stone.black{border:1px solid #060b0a;background:radial-gradient(circle at 34% 28%,#59615f,#1c2422 42%,#070b0a)}.mini-stone.white{border:1px solid #b7b9b5;background:radial-gradient(circle at 34% 28%,#fff,#ecebe5 62%,#c5c4bd)}.board-wrap{position:relative;width:min(100%,calc(100vh - 250px),760px);width:min(100%,calc(100dvh - 250px),760px);min-width:280px;aspect-ratio:1;overflow:hidden;border:1px solid #91632f;border-radius:5px;background:var(--wood);box-shadow:var(--shadow),inset 0 0 0 1px #fff4db8c}#board{display:block;width:100%;height:100%;cursor:crosshair;touch-action:manipulation}.thinking{position:absolute;top:14px;left:50%;min-height:36px;padding:0 13px;display:flex;align-items:center;gap:8px;border:1px solid rgba(255,255,255,.14);border-radius:7px;color:#fff;background:#142f2be8;box-shadow:0 6px 18px #182d2933;font-size:12px;font-weight:700;opacity:0;pointer-events:none;transform:translate(-50%,-8px);transition:opacity .15s ease,transform .15s ease}.thinking.active{opacity:1;transform:translate(-50%)}.thinking-dots{display:flex;gap:3px}.thinking-dots i{width:4px;height:4px;border-radius:50%;background:#fff;animation:think .9s infinite ease-in-out}.thinking-dots i:nth-child(2){animation-delay:.12s}.thinking-dots i:nth-child(3){animation-delay:.24s}@keyframes think{0%,60%,to{opacity:.35;transform:translateY(0)}30%{opacity:1;transform:translateY(-2px)}}.board-toast{position:absolute;left:50%;bottom:16px;width:max-content;max-width:calc(100% - 28px);min-height:36px;padding:9px 13px;border-radius:7px;color:#fff;background:#17312deb;box-shadow:0 7px 20px #17312d38;font-size:12px;font-weight:700;line-height:1.4;text-align:center;opacity:0;pointer-events:none;transform:translate(-50%,8px);transition:opacity .15s ease,transform .15s ease}.board-toast.active{opacity:1;transform:translate(-50%)}.capture-strip{width:min(100%,760px);min-height:42px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-bottom:1px solid var(--line)}.capture-strip>div{min-width:0;display:flex;align-items:center;gap:7px;color:var(--ink-soft);font-size:11px;font-weight:650}.capture-strip>div:last-child{justify-content:flex-end}.capture-strip .mini-stone{width:14px;height:14px;flex-basis:14px}.capture-strip strong{min-width:16px;color:var(--ink);font-size:14px;text-align:right}.board-actions{width:min(100%,760px);min-height:54px;padding-top:10px;display:flex;justify-content:flex-end;gap:8px}.primary-command,.secondary-command{min-height:40px;padding:0 15px;display:inline-flex;align-items:center;justify-content:center;gap:7px;border-radius:7px;font-size:13px;font-weight:780;white-space:nowrap;cursor:pointer}.primary-command{border:1px solid var(--green-dark);color:#fff;background:var(--green-dark)}.primary-command:hover:not(:disabled){border-color:var(--green);background:var(--green)}.secondary-command{border:1px solid var(--line);color:var(--ink);background:var(--surface)}.secondary-command:hover:not(:disabled),.secondary-command.selected{color:var(--green-dark);border-color:#9ab8b1;background:var(--green-pale)}.primary-command:disabled,.secondary-command:disabled{opacity:.38;cursor:not-allowed}.side-panel{min-width:0;min-height:560px;padding:6px 0 0 clamp(22px,3vw,38px);border-left:1px solid var(--line)}.learn-panel,.play-panel{display:none}.mode-learn .learn-panel,.mode-ai .play-panel,.mode-local .play-panel{display:block}.mode-learn .play-only,.mode-ai .learn-only,.mode-local .learn-only,.mode-local .ai-setting{display:none}.lesson-progress-row{display:flex;align-items:end;justify-content:space-between;gap:18px}.lesson-progress-row>div:first-child{display:flex;flex-direction:column;gap:4px}.eyebrow{color:var(--coral);font-size:11px;font-weight:820;line-height:1.2}.lesson-progress-row strong{font-size:13px}.progress-track{width:126px;height:5px;overflow:hidden;border-radius:3px;background:#dce6e3}.progress-track i{display:block;width:0;height:100%;background:var(--coral);transition:width .22s ease}.lesson-picker{margin-top:17px;display:grid;grid-template-columns:repeat(8,minmax(26px,1fr));gap:5px}.lesson-picker button{width:100%;aspect-ratio:1;padding:0;display:grid;place-items:center;border:1px solid var(--line);border-radius:5px;color:var(--ink-soft);background:var(--surface);font-size:11px;font-weight:800;cursor:pointer}.lesson-picker button.current{color:#fff;border-color:var(--green-dark);background:var(--green-dark)}.lesson-picker button.complete:not(.current){color:var(--green-dark);border-color:#a6c2bc;background:var(--green-pale)}.lesson-picker button.locked{opacity:.35;cursor:not-allowed}.lesson-copy{margin-top:28px}.lesson-copy h2,.panel-heading h2{margin:0;color:var(--ink);font-family:Georgia,"Noto Serif KR",serif;font-size:clamp(22px,2.2vw,29px);line-height:1.25}.lesson-copy p{margin:13px 0 0;color:var(--ink-soft);font-size:14px;line-height:1.75}.lesson-task{margin-top:22px;min-height:70px;padding:14px;display:grid;grid-template-columns:22px 1fr;align-items:start;gap:10px;border-left:3px solid var(--coral);color:var(--ink);background:var(--coral-pale)}.lesson-task svg{margin-top:1px;color:var(--coral)}.lesson-task p{margin:0;font-size:13px;font-weight:750;line-height:1.55}.lesson-feedback{min-height:44px;margin:14px 0 0;color:var(--ink-soft);font-size:12px;font-weight:700;line-height:1.5}.lesson-feedback.success{color:var(--green-dark)}.lesson-feedback.error{color:#b93a33}.lesson-actions{display:grid;grid-template-columns:40px minmax(0,1fr) minmax(0,1.2fr);gap:8px}.lesson-actions .primary-command,.lesson-actions .secondary-command{padding-inline:10px}.panel-heading{padding-bottom:20px;border-bottom:1px solid var(--line)}.panel-heading h2{margin-top:6px}.setting-row{padding:18px 0;border-bottom:1px solid var(--line)}.setting-label{display:block;margin-bottom:10px;color:var(--ink-soft);font-size:11px;font-weight:780}.segments{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));padding:3px;border:1px solid var(--line);border-radius:7px;background:#e9efed}.segments button{min-width:0;min-height:36px;padding:0 8px;border:0;border-radius:5px;color:var(--ink-soft);background:transparent;font-size:12px;font-weight:750;cursor:pointer}.segments button.selected{color:var(--ink);background:var(--surface);box-shadow:0 1px 5px #1d363121}.stone-segments{grid-template-columns:repeat(2,1fr)}.stone-segments button{display:inline-flex;align-items:center;justify-content:center;gap:7px}.stone-segments .mini-stone{width:15px;height:15px;flex-basis:15px}.rule-row{padding:18px 0;display:grid;grid-template-columns:22px 1fr;gap:10px;border-bottom:1px solid var(--line);color:var(--green-dark)}.rule-row div{min-width:0;display:flex;flex-direction:column;gap:4px}.rule-row strong{color:var(--ink);font-size:12px}.rule-row span{color:var(--ink-soft);font-size:11px;line-height:1.45}.score-preview{display:none;grid-template-columns:repeat(2,1fr);margin-top:18px;border:1px solid var(--line);border-radius:7px;background:var(--surface)}.score-preview>div{min-width:0;padding:14px 12px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:7px}.score-preview>div+div{border-left:1px solid var(--line)}.score-preview .mini-stone{width:15px;height:15px;flex-basis:15px}.score-preview small{overflow:hidden;color:var(--ink-soft);font-size:10px;text-overflow:ellipsis;white-space:nowrap}.score-preview strong{font-size:18px}.scoring-help{display:none;margin:11px 0 0;color:var(--ink-soft);font-size:11px;line-height:1.55}.scoring-only{display:none}.is-scoring .scoring-only{display:inline-flex}.is-scoring #passButton{display:none}.is-scoring .score-preview{display:grid}.is-scoring .scoring-help{display:block}.result-overlay{position:fixed;z-index:20;inset:0;padding:20px;display:grid;place-items:center;background:#0d1e1b9e;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .17s ease,visibility 0s linear .17s}.result-overlay.active{opacity:1;visibility:visible;pointer-events:auto;transition-delay:0s}.result-dialog{position:relative;width:min(360px,100%);padding:32px;border:1px solid rgba(255,255,255,.5);border-radius:8px;background:var(--surface);box-shadow:0 28px 70px #08181557;text-align:center;transform:translateY(10px);transition:transform .17s ease}.result-overlay.active .result-dialog{transform:translateY(0)}.close-button{position:absolute;top:12px;right:12px}.result-stone{display:block;width:64px;height:64px;margin:20px auto 16px;border-radius:50%;box-shadow:0 7px 17px #121d1b40}.result-stone.black{border:1px solid #080d0c;background:radial-gradient(circle at 34% 28%,#66706c,#202825 40%,#080d0c)}.result-stone.white{border:1px solid #b6b8b3;background:radial-gradient(circle at 34% 28%,#fff,#eeebe3 60%,#c6c3ba)}.result-stone.draw{border:8px solid var(--green-dark);background:var(--surface)}.result-dialog h2{margin:0;font-family:Georgia,"Noto Serif KR",serif;font-size:28px}.result-dialog>p{margin:9px 0 0;color:var(--ink-soft);font-size:13px}.result-score{margin:22px 0;padding:13px 0;display:grid;grid-template-columns:1fr 1px 1fr;gap:14px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.result-score span{display:flex;justify-content:center;gap:8px;font-size:12px}.result-score i{background:var(--line)}.wide{width:100%}@media(max-width:920px){#app{padding-inline:14px}.topbar{grid-template-columns:1fr auto;padding:12px 0}.mode-tabs{grid-column:1 / -1;grid-row:2;width:100%}.toolbar{grid-column:2;grid-row:1}.game-layout{grid-template-columns:minmax(0,1fr);gap:16px;margin-top:14px}.side-panel{min-height:0;padding:0;border-left:0}.mode-learn .side-panel{order:1}.mode-learn .board-stage{order:2}.mode-ai .board-stage,.mode-local .board-stage{order:1}.mode-ai .side-panel,.mode-local .side-panel{order:2;padding-top:18px;border-top:1px solid var(--line)}.lesson-progress-row{align-items:center}.lesson-picker{margin-top:12px}.lesson-copy{margin-top:16px}.lesson-copy h2{font-size:22px}.lesson-copy p{margin-top:7px;font-size:13px;line-height:1.55}.lesson-task{min-height:54px;margin-top:12px;padding:11px 12px}.lesson-feedback{min-height:28px;margin-top:8px}.lesson-actions{margin-bottom:4px}.board-wrap{width:min(100%,720px)}.play-panel{display:grid!important;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:20px}.mode-learn .play-panel{display:none!important}.panel-heading,.rule-row,.score-preview,.scoring-help{grid-column:1 / -1}.setting-row{padding-block:14px}}@media(max-width:560px){#app{padding-inline:10px}.topbar{gap:10px}.brand-board{width:36px;height:36px;transform:scale(.9);transform-origin:left center}.brand h1{font-size:24px}.brand-copy{display:block}.brand-copy span{display:block;margin-top:3px;font-size:10px}.toolbar{gap:5px}.icon-button{width:38px;height:38px}.mode-tabs{grid-template-columns:repeat(3,1fr)}.mode-tabs button{min-width:0;padding-inline:6px;gap:5px;font-size:12px}.mode-tabs svg{width:16px;height:16px}.game-layout{margin-top:9px}.progress-track{width:96px}.lesson-picker{gap:4px}.lesson-picker button{font-size:10px}.lesson-copy h2{font-size:20px}.lesson-task p{font-size:12px}.lesson-actions{grid-template-columns:38px minmax(0,.95fr) minmax(0,1.15fr)}.lesson-actions button{min-height:38px;font-size:11px}.turn-strip{min-height:38px}.board-wrap{min-width:0}.capture-strip span:not(.mini-stone){overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.board-actions{min-height:48px;padding-top:8px}.primary-command,.secondary-command{min-height:38px;padding-inline:12px}.play-panel{grid-template-columns:minmax(0,1fr)}.panel-heading,.rule-row,.score-preview,.scoring-help{grid-column:1}.result-dialog{padding:28px 22px 22px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}
