:root{--bg:#faf8f4;--surface:#fff;--surface-2:#f3f0ea;--border:#e7e2d9;--border-strong:#d6cfc3;--text:#2b2a28;--muted:#74706a;--faint:#a19b92;--accent:#3f7f73;--accent-hover:#356c62;--accent-soft:#e4efec;--accent-contrast:#fff;--star:#c98a1b;--star-soft:#fbf0d9;--danger:#b4513f;--danger-soft:#f8e6e1;--success:#3f7f5a;--success-soft:#e3f1e7;--warn-soft:#fbf3df;--radius:12px;--radius-sm:8px;--shadow:0 1px 2px #2b2a280a, 0 4px 16px #2b2a280d;--shadow-pop:0 8px 30px #2b2a2824;--font:"Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--mono:"JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;--reading:760px;--wide:1120px;--focus:0 0 0 3px color-mix(in srgb, var(--accent) 35%, transparent);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media 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h1{margin:0}.page-sub{color:var(--muted);margin-top:4px}.stack>*+*{margin-top:16px}.row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.row-between{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;display:flex}.spacer{flex:1}.muted{color:var(--muted)}.faint{color:var(--faint)}.small{font-size:.875rem}.tiny{font-size:.78rem}.center{text-align:center}.mono{font-family:var(--mono)}.nowrap{white-space:nowrap}.nav{z-index:40;background:color-mix(in srgb, var(--bg) 88%, transparent);-webkit-backdrop-filter:saturate(140%)blur(8px);backdrop-filter:saturate(140%)blur(8px);border-bottom:1px solid var(--border);position:sticky;top:0}.nav-inner{max-width:var(--wide);align-items:center;gap:16px;margin:0 auto;padding:10px 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.num{text-align:right;font-variant-numeric:tabular-nums}.modal-backdrop{z-index:90;background:#14131173;place-items:center;padding:16px;animation:.15s fade;display:grid;position:fixed;inset:0}.modal{background:var(--surface);width:100%;max-width:460px;max-height:calc(100vh - 32px);color:var(--text);box-shadow:var(--shadow-pop);font-family:var(--font);border-radius:14px;padding:22px;overflow-y:auto}.modal h2{margin-bottom:12px}.modal-actions{flex-wrap:wrap;justify-content:flex-end;gap:8px;margin-top:20px;display:flex}@keyframes fade{0%{opacity:0}}.toasts{z-index:200;pointer-events:none;flex-direction:column;gap:8px;width:min(420px,100vw - 32px);display:flex;position:fixed;bottom:20px;left:50%;transform:translate(-50%)}.toast{pointer-events:auto;background:var(--text);color:var(--bg);box-shadow:var(--shadow-pop);border-radius:10px;align-items:center;gap:10px;padding:11px 16px;font-size:.93rem;animation:.2s 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var(--border));flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:24px;display:flex}.checkin-card .big-star{background:var(--surface);width:48px;height:48px;color:var(--star);border-radius:50%;flex-shrink:0;place-items:center;display:grid}.streak-dots{gap:4px;margin-top:6px;display:flex}.streak-dots span{background:var(--border-strong);border-radius:50%;width:10px;height:10px}.streak-dots span.on{background:var(--star)}.profile-head{flex-wrap:wrap;align-items:center;gap:20px;display:flex}.stats{grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;display:grid}.stat{background:var(--surface-2);border-radius:10px;padding:12px 14px}.stat-value{font-variant-numeric:tabular-nums;font-size:1.4rem;font-weight:700}.stat-label{color:var(--muted);font-size:.82rem}.thumbs{flex-wrap:wrap;gap:10px;display:flex}.thumb{border:1px solid var(--border);background:var(--surface-2);border-radius:10px;width:110px;height:110px;position:relative;overflow:hidden}.thumb img{object-fit:cover;width:100%;height:100%}.thumb .remove{color:#fff;cursor:pointer;background:#141311b3;border:none;border-radius:50%;place-items:center;width:26px;height:26px;display:grid;position:absolute;top:4px;right:4px}.upload-slot{border:1.5px dashed var(--border-strong);width:110px;height:110px;color:var(--muted);cursor:pointer;text-align:center;background:0 0;border-radius:10px;place-items:center;padding:8px;font-size:.8rem;display:grid}.upload-slot:hover{border-color:var(--accent);color:var(--accent)}.cost-box{background:var(--surface-2);border-radius:10px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:14px 16px;display:flex}.chain-frame{--c-text:var(--text);--c-accent:var(--accent);--c-bg:var(--bg);--c-font:var(--font);color:var(--c-text);font-family:var(--c-font);background-color:var(--c-bg);isolation:isolate;background-position:50%;background-size:cover;position:relative}.chain-frame.fixed-bg{background-attachment:fixed}@media (width<=760px){.chain-frame.fixed-bg{background-attachment:scroll}}.chain-frame:before{content:"";background:var(--c-bg);opacity:var(--c-overlay,0);z-index:-1;position:absolute;inset:0}.chain-frame a:not(.btn){color:var(--c-accent)}.chain-frame .btn-primary{background:var(--c-accent);border-color:var(--c-accent);color:var(--c-on-accent,#fff)}.chain-frame .btn-primary:hover{filter:brightness(.93)}.chain-frame .card,.chain-frame .surface{background:color-mix(in srgb, var(--c-bg) 82%, transparent);border-color:color-mix(in srgb, var(--c-text) 14%, transparent);color:var(--c-text);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.chain-frame .muted{color:color-mix(in srgb, var(--c-text) 65%, transparent)}.chain-frame .tab.active{background:color-mix(in srgb, var(--c-bg) 92%, transparent);color:var(--c-text)}.chain-frame .tabs{background:color-mix(in srgb, var(--c-text) 8%, transparent)}.chain-frame .tab{color:color-mix(in srgb, var(--c-text) 65%, transparent)}.chain-frame .input,.chain-frame .textarea{background:color-mix(in srgb, var(--c-bg) 90%, transparent);color:var(--c-text);border-color:color-mix(in srgb, var(--c-text) 25%, transparent)}.chain-frame .btn:not(.btn-primary):not(.btn-star){background:color-mix(in srgb, var(--c-bg) 85%, transparent);color:var(--c-text);border-color:color-mix(in srgb, var(--c-text) 22%, transparent)}.chain-frame .user-link{color:var(--c-text)}.chain-frame .lvl,.chain-frame .role-badge,.chain-frame .tag-accent{background:color-mix(in srgb, var(--c-accent) 18%, transparent);color:var(--c-accent)}.chain-frame .progress{background:color-mix(in srgb, var(--c-text) 12%, transparent)}.chain-frame .progress>div{background:var(--c-accent)}.chain-page{min-height:calc(100vh - 59px);padding:32px 16px 64px}.chain-cover{object-fit:cover;border-radius:var(--radius);width:100%;max-height:280px;display:block}.chain-title{font-size:2rem;line-height:1.2}.path{margin:0;padding:0;list-style:none;position:relative}.path li{align-items:center;gap:14px;padding:10px 0;display:flex;position:relative}.path li:not(:last-child):after{content:"";background:color-mix(in srgb, var(--c-text) 18%, transparent);width:2px;position:absolute;top:46px;bottom:-8px;left:17px}.path-dot{border:2px solid color-mix(in srgb, var(--c-text) 22%, transparent);background:color-mix(in srgb, var(--c-bg) 90%, transparent);width:36px;height:36px;color:color-mix(in srgb, var(--c-text) 60%, transparent);border-radius:50%;flex-shrink:0;place-items:center;font-size:.9rem;font-weight:700;display:grid}.path li.solved .path-dot{background:var(--c-accent);border-color:var(--c-accent);color:var(--c-on-accent,#fff)}.path li.current .path-dot{border-color:var(--c-accent);color:var(--c-accent);box-shadow:0 0 0 4px color-mix(in srgb, var(--c-accent) 20%, transparent)}.path li.locked{opacity:.7}.path-title{overflow-wrap:anywhere;flex:1;min-width:0;font-weight:500}.celebrate{text-align:center;padding:28px 16px}.celebrate .emoji{margin-bottom:8px;font-size:3rem;line-height:1}.font-be-vietnam{--c-font:"Be Vietnam Pro", system-ui, sans-serif}.font-serif{--c-font:"Lora", Georgia, "Times New Roman", serif}.font-mono{--c-font:"JetBrains Mono", ui-monospace, Consolas, monospace}.font-handwriting{--c-font:"Pangolin", "Comic Sans MS", cursive}.font-rounded{--c-font:"Nunito", system-ui, sans-serif}.editor-layout{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:24px;display:grid}@media (width<=900px){.editor-layout{grid-template-columns:1fr}}.preview-panel{border-radius:var(--radius);border:1px solid var(--border);min-height:360px;position:sticky;top:76px;overflow:hidden}.preview-panel .chain-frame{min-height:360px;padding:24px 18px}.color-input{align-items:center;gap:8px;display:flex}.color-input input[type=color]{border:1px solid var(--border-strong);background:var(--surface);cursor:pointer;border-radius:8px;width:42px;height:38px;padding:2px}.font-options{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:8px;display:grid}.font-option{border:1px solid var(--border-strong);background:var(--surface);cursor:pointer;text-align:left;border-radius:10px;padding:10px}.font-option.active{border-color:var(--accent);box-shadow:var(--focus)}.puzzle-list-item{border:1px solid var(--border);background:var(--surface);border-radius:10px;align-items:center;gap:10px;padding:10px 12px;display:flex}.puzzle-list-item+.puzzle-list-item{margin-top:8px}.pos{background:var(--accent-soft);width:28px;height:28px;color:var(--accent);border-radius:50%;flex-shrink:0;place-items:center;font-size:.85rem;font-weight:700;display:grid}.admin-layout{grid-template-columns:200px minmax(0,1fr);gap:24px;display:grid}.admin-side{flex-direction:column;gap:2px;display:flex}@media 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span{background:var(--border-strong);border-radius:50%;width:8px;height:8px;transition:background .2s,width .2s}.guide-dots span.active{background:var(--accent);border-radius:999px;width:22px}.guide-section{align-items:flex-start;gap:20px;display:flex}.guide-section .guide-art{flex-shrink:0;margin:0}.guide-section h2{margin-top:0}@media (width<=600px){.guide-section{flex-direction:column;align-items:stretch}}.community-link{color:var(--accent);border-color:color-mix(in srgb, var(--accent) 45%, var(--border));margin-top:10px}.community-link:hover{background:color-mix(in srgb, var(--accent) 8%, var(--surface))}img[data-load-failed]{border:1px dashed var(--border-strong);background:var(--surface-2);min-width:120px;min-height:80px;color:var(--muted);cursor:pointer;object-fit:none;border-radius:10px;padding:10px;font-size:.85rem}