:root{--color-bg: #eef1f8;--color-surface: #ffffff;--color-text: #14171f;--color-text-muted: #5b6472;--color-border: #c3cbdc;--color-primary: #2547d0;--color-primary-dark: #17318f;--color-primary-tint: #e3e9fc;--color-accent: #ffb000;--color-danger: #d92d20;--color-danger-dark: #a3211a;--shadow-sm: 0 2px 6px rgba(20, 23, 31, .1);--shadow-md: 0 6px 18px rgba(20, 23, 31, .16)}.board-page *{box-sizing:border-box}html.board-page,body.board-page{height:100%;margin:0;overflow:hidden}body.board-page{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--color-bg);color:var(--color-text);display:flex;flex-direction:column}.hidden{display:none!important}button{font-family:inherit}button:focus-visible{outline:3px solid var(--color-accent);outline-offset:2px}#lang-select-screen{position:relative;flex:1;min-height:0;display:flex;flex-direction:column;align-items:center;justify-content:center;justify-content:safe center;padding:24px;text-align:center;overflow-y:auto}.help-btn{background:linear-gradient(180deg,#eef2ff 0%,var(--color-primary-tint) 100%);color:var(--color-primary-dark);border:none;border-bottom:3px solid #b7c4f0;border-radius:14px;font-weight:800;font-size:clamp(16px,1.4vw,20px);padding:14px 24px;cursor:pointer;box-shadow:var(--shadow-md);transition:transform .08s ease,box-shadow .08s ease}.help-btn:hover{background:linear-gradient(180deg,#e2e9ff,#c9d4f9);transform:translateY(-2px);box-shadow:0 8px 20px #14171f33}.help-btn:active{transform:translateY(1px);border-bottom-width:1px;box-shadow:var(--shadow-sm)}#lang-select-screen .help-btn{align-self:flex-start;margin-bottom:16px}.side-bar-btn.help-btn{width:100%;font-size:clamp(11px,1.3vw,13px);padding:clamp(8px,1.2vh,12px) 6px;white-space:normal;line-height:1.25}.logo{display:block;height:clamp(72px,11vw,132px);width:auto;margin:0 auto 20px}#lang-select-screen h1{font-size:clamp(26px,3vw,40px);font-weight:800;margin-bottom:12px;color:var(--color-text)}.lang-subtitle{font-size:clamp(14px,1.1vw,18px);color:var(--color-text-muted);margin:0 0 32px;max-width:560px;line-height:1.5}.lang-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:18px;width:100%;max-width:560px}.lang-grid.small{grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:10px;margin-bottom:16px}.lang-grid button{padding:clamp(20px,2.4vw,32px) 12px;font-size:clamp(19px,1.6vw,24px);font-weight:700;border:2px solid var(--color-border);border-radius:14px;background:var(--color-surface);color:var(--color-text);cursor:pointer;box-shadow:var(--shadow-sm);transition:background .15s ease,color .15s ease,transform .1s ease,box-shadow .15s ease}.lang-grid.small button{padding:12px 8px;font-size:15px;border-radius:10px}.lang-grid button:hover,.lang-grid button:focus-visible{background:var(--color-primary);border-color:var(--color-primary);color:#fff;box-shadow:var(--shadow-md);transform:translateY(-2px)}.lang-grid button:active{transform:translateY(0)}.footer-links{display:flex;align-items:center;gap:18px;margin-top:44px}.footer-links>a{color:var(--color-text-muted);text-decoration:none;font-size:15px;font-weight:600}.footer-links>a:hover{color:var(--color-primary)}.company-footer{margin-top:20px;font-size:12px;color:var(--color-text-muted)}.company-footer a{color:inherit}#board-screen{flex:1;display:flex;flex-direction:row;height:100vh;width:100%;background:var(--color-bg)}@media (orientation: landscape){#board-screen{max-width:1100px;margin:0 auto;box-shadow:0 0 0 1px var(--color-border),var(--shadow-md)}}.side-bar{position:relative;display:flex;flex-direction:column;align-items:stretch;gap:clamp(8px,1.4vh,14px);width:clamp(76px,9vw,128px);padding:clamp(10px,1.6vh,18px) clamp(6px,.8vw,12px);background:var(--color-surface);border-right:1px solid var(--color-border);box-shadow:var(--shadow-sm);flex-shrink:0;overflow-y:auto;z-index:1;transition:width .18s ease,padding .18s ease}.side-bar.collapsed{width:0;padding-left:0;padding-right:0;border-right:none;overflow:hidden}.side-bar-logo-btn{display:block;width:100%;flex-shrink:0;padding:0;border:none;background:none;cursor:pointer}.side-bar-logo{width:100%;height:auto;flex-shrink:0;pointer-events:none}.sidebar-toggle{flex-shrink:0;width:clamp(18px,2vw,24px);align-self:stretch;border:none;border-right:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-muted);font-size:clamp(14px,1.6vw,18px);line-height:1;cursor:pointer;z-index:1}.sidebar-toggle:hover{background:var(--color-primary-tint);color:var(--color-primary-dark)}.board-main{flex:1;min-width:0;display:flex;flex-direction:column}.input-row{display:flex;gap:10px;padding:clamp(12px,2vh,22px) clamp(16px,2vw,28px) 0 clamp(16px,2vw,28px);flex-shrink:0}.output{flex:1;min-height:clamp(56px,9vh,72px);max-height:clamp(90px,13vh,112px);padding:14px 16px;background:var(--color-surface);border:2px solid var(--color-border);border-radius:10px;box-shadow:var(--shadow-sm);font-size:clamp(22px,1.6vw + 1vh,30px);font-weight:600;line-height:1.3;word-break:break-all;overflow-y:auto;cursor:pointer;color:var(--color-text)}.output.is-empty:before{content:attr(data-placeholder);color:#8a93a6;font-weight:400}.output .caret{display:inline-block;width:2px;height:1em;margin-left:2px;background:currentColor;vertical-align:text-bottom;animation:caret-blink 1s step-end infinite}@keyframes caret-blink{50%{opacity:0}}.scroll-buttons{display:flex;flex-direction:column;gap:4px}.scroll-buttons button{width:40px;flex:1;background:var(--color-surface);border:2px solid var(--color-border);border-radius:8px;cursor:pointer;font-size:14px;font-weight:700;color:var(--color-text-muted)}.quick-phrases{display:flex;gap:8px;padding:clamp(10px,1.6vh,16px) clamp(16px,2vw,28px) 0 clamp(16px,2vw,28px);overflow-x:auto;flex-shrink:0}.chip{flex-shrink:0;display:flex;align-items:center;gap:8px;background:var(--color-primary-tint);border:1px solid #c9d4f9;color:var(--color-primary-dark);padding:clamp(8px,1vh,10px) clamp(12px,1.2vw,16px);border-radius:20px;font-size:clamp(14px,1.1vw,16px);font-weight:700}.chip-text{cursor:pointer;white-space:nowrap}.chip-remove{border:none;background:none;color:#6b78c4;cursor:pointer;font-size:13px;font-weight:700;padding:0}.suggestion-chip{background:#fff4d6;border-color:#f0d38a;color:#8a6a00}.wheel{flex:1;min-height:0;overflow:hidden;container-type:size;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-template-rows:minmax(0,1fr) minmax(0,1fr) minmax(0,var(--extra-row-gap)) minmax(0,1fr) minmax(0,1fr);align-content:stretch;align-items:center;justify-items:center;row-gap:clamp(8px,1.4vh,22px);column-gap:clamp(14px,2.2vw,40px);padding:clamp(8px,1.2vh,18px) clamp(14px,3vw,40px);--wheel-row-gap: clamp(8px, 1.4vh, 22px);--wheel-col-gap: clamp(14px, 2.2vw, 40px);--wheel-pad-y: clamp(8px, 1.2vh, 18px);--wheel-pad-x: clamp(14px, 3vw, 40px);--extra-row-gap: clamp(16px, 3.6vh, 60px)}.action-btn,.cluster{--row-h: calc((100cqh - 4 * var(--wheel-row-gap) - 2 * var(--wheel-pad-y) - var(--extra-row-gap)) / 4);--col-w: calc((100cqw - 2 * var(--wheel-col-gap) - 2 * var(--wheel-pad-x)) / 3);--circle-size: clamp(72px, min(var(--col-w) * .97, var(--row-h) * .96), 360px);display:flex;align-items:center;justify-content:center;flex-wrap:wrap;align-content:center;width:var(--circle-size);height:var(--circle-size);border-radius:50%;background:var(--color-surface);border:3px solid var(--color-border);box-shadow:var(--shadow-sm);cursor:pointer;overflow:hidden;font-size:calc(var(--circle-size) * .165);font-weight:700;color:var(--color-text);row-gap:4px;transition:transform .1s ease,box-shadow .15s ease}.action-btn{grid-column:2;grid-row:1;font-size:calc(var(--circle-size) * .14);background:var(--color-primary);border-color:var(--color-primary);color:#fff;box-shadow:var(--shadow-md)}.cluster-ml{grid-column:1;grid-row:2}.cluster-mr{grid-column:3;grid-row:2}.cluster-bl{grid-column:1;grid-row:4}.cluster-br{grid-column:3;grid-row:4}.cluster-bc{grid-column:2;grid-row:5}.cluster span{flex:0 0 42%;min-width:0;max-width:100%;overflow:hidden;white-space:nowrap;text-align:center;padding:2px}.cluster span.solo-item{flex:0 0 100%;font-size:calc(var(--circle-size) * .3)}.cluster span.cluster-label-multi{flex:0 0 100%}.cluster.empty{visibility:hidden}.action-btn:hover,.cluster:not(.empty):hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.action-btn.scan-highlight,.cluster.scan-highlight{background:var(--color-primary-dark);border-color:var(--color-primary-dark);color:#fff;outline:4px solid var(--color-accent);outline-offset:3px;transform:scale(1.05);box-shadow:var(--shadow-md);z-index:2}.cluster.scan-highlight span.scan-highlight{background:var(--color-accent);color:#1a1200;border-radius:6px;box-shadow:0 0 0 2px #00000026}.bottom-bar{display:flex;flex-shrink:0;border-top:1px solid var(--color-border)}.bottom-bar button{flex:1;padding:clamp(16px,2.4vh,24px);font-size:clamp(17px,1.5vw,20px);font-weight:700;border:none;background:var(--color-surface);color:var(--color-text);cursor:pointer}.bottom-bar button+button{border-left:1px solid var(--color-border)}.bottom-bar button:hover{background:var(--color-primary-tint)}.bottom-bar button.danger{background:var(--color-danger);color:#fff}.bottom-bar button.danger:hover{background:var(--color-danger-dark)}.modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#0a0c1499;display:flex;align-items:center;justify-content:center;padding:20px;z-index:10}.modal-content{background:var(--color-surface);border-radius:16px;padding:26px;width:100%;max-width:420px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-md)}.modal-content h2{margin-top:0;font-size:21px;font-weight:800}.modal-content>div{margin-bottom:22px}.modal-content label{display:block;font-weight:700;margin-bottom:10px;font-size:15px;color:var(--color-text)}.mode-option{display:flex;align-items:center;gap:10px;font-weight:500;margin-bottom:12px;font-size:15px}.mode-option input{width:20px;height:20px;accent-color:var(--color-primary)}#scan-speed{width:100%;accent-color:var(--color-primary)}.modal-content .secondary-btn{display:block;box-sizing:border-box;width:100%;padding:13px;background:var(--color-primary-tint);color:var(--color-primary-dark);border:none;border-radius:10px;font-size:15px;font-weight:700;text-align:center;text-decoration:none;cursor:pointer;margin-top:4px}.modal-content .secondary-btn:hover{background:#c9d4f9}.modal-content #close-menu{width:100%;padding:14px;background:var(--color-primary);color:#fff;border:none;border-radius:10px;font-size:17px;font-weight:700;cursor:pointer;margin-top:14px}.modal-content #close-menu:hover{background:var(--color-primary-dark)}.help-modal-content{max-width:720px}.video-frame{position:relative;width:100%;padding-top:56.25%;border-radius:10px;overflow:hidden;background:#000}.video-frame video{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:0;background:#000}#close-help,#close-history{width:100%;padding:14px;background:var(--color-primary);color:#fff;border:none;border-radius:10px;font-size:17px;font-weight:700;cursor:pointer;margin-top:16px}#close-help:hover,#close-history:hover{background:var(--color-primary-dark)}.history-modal-content{max-width:480px}.history-list{max-height:50vh;overflow-y:auto;display:flex;flex-direction:column;gap:8px}.history-empty{color:var(--color-text-muted);text-align:center;padding:20px 0}.history-item{display:flex;flex-direction:column;align-items:flex-start;gap:4px;width:100%;text-align:left;background:var(--color-primary-tint);border:none;border-radius:10px;padding:10px 14px;cursor:pointer}.history-item:hover{background:#c9d4f9}.history-item-text{font-weight:700;color:var(--color-text);font-size:15px}.history-item-time{font-size:12px;color:var(--color-text-muted)}:root{--color-bg: #eef1f8;--color-surface: #ffffff;--color-text: #14171f;--color-text-muted: #5b6472;--color-border: #dbe0ee;--color-primary: #2547d0;--color-primary-dark: #17318f;--color-primary-tint: #e3e9fc}*{box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--color-bg);color:var(--color-text);margin:0;line-height:1.6}.site-header{background:var(--color-surface);border-bottom:1px solid var(--color-border)}.site-nav{max-width:780px;margin:0 auto;padding:16px 20px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}.site-logo{display:flex;align-items:center;text-decoration:none}.site-logo img{height:40px;width:auto;display:block}.site-links{display:flex;gap:18px;flex-wrap:wrap}.site-links a{color:var(--color-text-muted);text-decoration:none;font-size:15px;font-weight:600}.site-links a:hover,.site-links a.active{color:var(--color-primary)}main{max-width:780px;margin:0 auto;padding:40px 20px 64px}main h1{font-size:clamp(28px,4vw,38px);font-weight:800;margin-bottom:8px}main p.lead{color:var(--color-text-muted);font-size:18px;margin-top:0;margin-bottom:36px}main h2{font-size:24px;font-weight:800;margin-top:44px;margin-bottom:14px}main h3{font-size:18px;font-weight:700;margin-top:28px;margin-bottom:8px}main p{margin:0 0 16px}main ul,main ol{margin:0 0 16px;padding-left:24px}main li{margin-bottom:8px}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:14px;padding:24px;margin-bottom:20px}.card h3{margin-top:0}.cta-box{background:var(--color-primary-tint);border-radius:14px;padding:28px;text-align:center;margin:40px 0}.cta-box h2{margin-top:0}.btn{display:inline-block;background:var(--color-primary);color:#fff;text-decoration:none;font-weight:700;padding:12px 28px;border-radius:10px;margin-top:8px}.btn:hover{background:var(--color-primary-dark)}.resource-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin:24px 0 36px}.toc{background:var(--color-surface);border:1px solid var(--color-border);border-radius:12px;padding:18px 24px;margin-bottom:32px}.toc p{font-weight:700;margin-bottom:8px}.toc ul{margin-bottom:0}.site-footer{border-top:1px solid var(--color-border);padding:28px 20px;text-align:center;color:var(--color-text-muted);font-size:13px}.site-footer a{color:var(--color-text-muted)}.note{background:#fff8e6;border:1px solid #f0d38a;border-radius:10px;padding:14px 18px;font-size:14px;color:#6b4f00;margin:20px 0}