:root{--washi:#f5efe4;--washi-deep:#ebe2d0;--sumi:#1a1612;--sumi-soft:#2d2620;--ink:#443a30;--ash:#8a7d6d;--vermillion:#b8412e;--gold:#b89968}*{box-sizing:border-box}html,body{min-height:100%;margin:0}body{color:var(--ink);background:linear-gradient(90deg, #1a161209 1px, transparent 1px) 0 0 / 48px 48px, linear-gradient(#1a161206 1px, transparent 1px) 0 0 / 48px 48px, var(--washi);font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button{font:inherit}.dojo-shell{grid-template-rows:auto auto 1fr;min-height:100vh;display:grid}.dojo-header{background:#f5efe4e6;border-bottom:1px solid #443a3029;justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.dojo-header-actions{align-items:center;gap:10px;display:flex}.dojo-brand{align-items:center;gap:12px;display:flex}.dojo-mark{border:2px solid var(--vermillion);width:40px;height:40px;color:var(--vermillion);place-items:center;font-family:serif;font-size:24px;font-weight:700;display:grid;transform:rotate(-4deg)}.dojo-brand strong{color:var(--sumi);font-family:serif;font-size:22px;display:block}.dojo-brand span{color:var(--ash);font-size:13px;display:block}.dojo-progress{min-width:64px;color:var(--ink);text-align:center;background:#fffaf0b3;border:1px solid #443a302e;padding:8px 10px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700}.dojo-ghost-button{min-height:36px;color:var(--ink);cursor:pointer;background:#fffaf0a3;border:1px solid #443a3033;padding:0 12px;font-weight:700}.dojo-ghost-button:hover,.dojo-ghost-button:focus{border-color:var(--vermillion);color:var(--vermillion);outline-offset:2px;outline:2px solid #b8996885}.dojo-home-shell{grid-template-rows:auto auto 1fr}.dojo-home-hero{background:var(--sumi-soft);color:var(--washi);border-bottom:1px solid #443a3024;grid-template-columns:minmax(0,1fr) 260px;gap:24px;padding:28px 24px;display:grid}.dojo-home-hero small,.dojo-section-header small{color:var(--gold);font-weight:700}.dojo-home-hero h1{max-width:760px;margin:6px 0 8px;font-family:serif;font-size:34px;line-height:1.22}.dojo-home-hero p{color:#f5efe4c7;max-width:760px;margin:0;line-height:1.7}.dojo-home-summary{background:#1a161242;border:1px solid #b899686b;align-content:center;align-self:stretch;gap:5px;padding:16px;display:grid}.dojo-home-summary span,.dojo-home-summary small{color:#f5efe4b8;font-size:12px}.dojo-home-summary strong{color:var(--washi);font-family:serif;font-size:24px}.dojo-lesson-index{padding:22px 24px 28px}.dojo-section-header{justify-content:space-between;align-items:end;gap:16px;margin-bottom:14px;display:flex}.dojo-section-header h2{color:var(--sumi);margin:3px 0 0;font-family:serif;font-size:24px}.dojo-section-header>span{color:var(--ash);font-size:13px}.dojo-lesson-list{gap:10px;display:grid}.dojo-lesson-row{width:100%;min-height:86px;color:var(--ink);text-align:left;cursor:pointer;background:#fffaf0c7;border:1px solid #443a302e;grid-template-columns:112px minmax(0,1fr) minmax(280px,.72fr);align-items:center;gap:14px;padding:14px;display:grid;box-shadow:0 12px 28px #2d262014}.dojo-lesson-row:hover,.dojo-lesson-row:focus{border-color:var(--vermillion);outline-offset:2px;outline:2px solid #b8996885}.dojo-lesson-number{color:var(--vermillion);font-family:serif;font-size:18px;font-weight:700}.dojo-lesson-main{gap:4px;display:grid}.dojo-lesson-main strong{color:var(--sumi);font-size:18px}.dojo-lesson-main span{color:var(--ash);font-size:13px;line-height:1.5}.dojo-lesson-meta{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.dojo-lesson-meta span{color:var(--ink);background:#f7eedf;border:1px solid #443a3024;padding:6px 8px;font-size:12px;font-weight:700}.dojo-banner{background:var(--sumi-soft);color:var(--washi);grid-template-columns:1fr auto;gap:18px;padding:16px 24px;display:grid}.dojo-banner small{color:var(--gold);font-weight:700}.dojo-banner h1{margin:4px 0;font-family:serif;font-size:28px}.dojo-banner p{color:#f5efe4c7;margin:0;font-size:14px}.dojo-timer{background:#1a161242;border:1px solid #b899686b;min-width:140px;padding:10px 14px}.dojo-timer span{color:var(--gold);font-size:12px;font-weight:700;display:block}.dojo-timer strong{color:var(--washi);margin-top:2px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:28px;line-height:1;display:block}.dojo-workspace{grid-template-columns:minmax(720px,1fr) 340px;gap:18px;min-height:0;padding:20px 24px 24px;display:grid}.dojo-sheet-panel,.dojo-side-panel{background:#fffaf0c2;border:1px solid #443a302e;min-height:0;box-shadow:0 18px 42px #2d262024}.dojo-sheet-panel{grid-template-rows:auto 1fr;display:grid}.dojo-panel-header{border-bottom:1px solid #443a3024;justify-content:space-between;align-items:center;min-height:46px;padding:0 14px;display:flex}.dojo-panel-header h2{color:var(--sumi);margin:0;font-family:serif;font-size:18px}.dojo-panel-header span{color:var(--ash);font-size:12px}.univer-host{min-height:560px}.univer-canvas{width:100%;height:100%;min-height:560px}.custom-sheet-panel{overflow:hidden}.custom-formula-row{background:#f5efe4bd;border-bottom:1px solid #443a3024;grid-template-columns:92px 38px minmax(0,1fr);align-items:center;gap:8px;padding:8px 10px;display:grid}.custom-name-box,.custom-fx,.custom-formula-input{background:#fffaf0;border:1px solid #443a302e;min-height:34px}.custom-name-box,.custom-fx{color:var(--sumi);place-items:center;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;font-weight:700;display:grid}.custom-fx{color:var(--ash);font-family:serif}.custom-formula-input{width:100%;min-width:0;color:var(--sumi);outline:none;padding:0 10px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px}.custom-formula-input:focus{border-color:var(--vermillion);box-shadow:0 0 0 2px #b8412e29}.custom-grid-wrap{background:#fffaf0;outline:none;min-height:520px;overflow:auto}.custom-grid{border-collapse:collapse;table-layout:fixed;width:100%;font-size:14px}.custom-grid th,.custom-grid td{border:1px solid #d7cbb8;height:42px}.custom-grid th{width:58px;color:var(--ash);text-align:center;background:#ebe2d0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700}.custom-grid th[data-active=true]{color:var(--sumi);background:#dcc9a9}.custom-grid td{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;background:#fff;padding:0 10px;position:relative;overflow:hidden}.custom-grid td[data-locked-ref=true]:after{content:"$";color:var(--vermillion);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px;font-weight:700;position:absolute;top:4px;right:6px}.custom-cell-input{width:100%;height:100%;color:var(--sumi);font:inherit;background:0 0;border:0;outline:none}.custom-grid td[data-selected=true]{box-shadow:inset 0 0 0 2px var(--vermillion);background:#fff5e4}.custom-grid td[data-in-range=true]{background:#fff8ec}.custom-grid td[data-range-top=true]{border-top-color:var(--vermillion);border-top-width:2px}.custom-grid td[data-range-right=true]{border-right-color:var(--vermillion);border-right-width:2px}.custom-grid td[data-range-bottom=true]{border-bottom-color:var(--vermillion);border-bottom-width:2px}.custom-grid td[data-range-left=true]{border-left-color:var(--vermillion);border-left-width:2px}.custom-grid td[data-copied=true]{outline:2px dashed var(--gold);outline-offset:-4px}.dojo-side-panel{grid-template-rows:auto 1fr auto auto;display:grid}.dojo-messages{flex-direction:column;gap:10px;padding:14px;display:flex;overflow:auto}.dojo-message{border-left:3px solid var(--vermillion);background:#f7eedf;padding:11px 12px;font-size:14px;line-height:1.6}.dojo-message-coach{border-left-color:var(--gold);color:var(--sumi);background:#fffaf0;font-weight:600}.dojo-controls{border-top:1px solid #443a301f;padding:14px}.dojo-primary-button{background:var(--vermillion);color:#fff;cursor:pointer;border:1px solid #8a2e1f;width:100%;min-height:42px;padding:0 14px;font-weight:700}.dojo-primary-button:hover,.dojo-primary-button:focus{outline-offset:2px;background:#8a2e1f;outline:2px solid #b89968cc}.dojo-control-note{border-left:3px solid var(--gold);color:var(--ink);background:#f7eedf;padding:10px 12px;font-size:14px;line-height:1.6}.dojo-modal-backdrop{z-index:20;background:#1a161294;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.dojo-modal-backdrop-praise{overflow:hidden}.dojo-modal-backdrop-praise:before,.dojo-modal-backdrop-praise:after{content:"";pointer-events:none;opacity:0;background-color:#0000;background-image:radial-gradient(circle at 18% 24%,#b8412ee6 0 4px,#0000 5px),radial-gradient(circle at 76% 18%,#b89968e6 0 3px,#0000 4px),radial-gradient(circle at 62% 72%,#b8412ebf 0 5px,#0000 6px),radial-gradient(circle at 30% 82%,#b89968d9 0 4px,#0000 5px),radial-gradient(circle at 86% 58%,#f5efe4e6 0 3px,#0000 4px);background-position:0 0,0 0,0 0,0 0,0 0;background-repeat:repeat,repeat,repeat,repeat,repeat;background-size:180px 180px;background-attachment:scroll,scroll,scroll,scroll,scroll;background-origin:padding-box,padding-box,padding-box,padding-box,padding-box;background-clip:border-box,border-box,border-box,border-box,border-box;animation:1.4s ease-out forwards dojoConfetti;position:absolute;inset:-20%}.dojo-modal-backdrop-praise:after{animation-delay:.12s;transform:rotate(12deg)}.dojo-modal{z-index:1;text-align:center;background:#fffaf0;border:1px solid #b899688c;width:min(560px,100%);padding:30px;position:relative;box-shadow:0 18px 42px #2d262038}.dojo-modal-praise{animation:.55s cubic-bezier(.2,.9,.2,1.2) both dojoModalPraise}.dojo-modal small{color:var(--vermillion);font-weight:700}.dojo-modal h2{color:var(--sumi);margin:8px 0 10px;font-family:serif;font-size:32px}.dojo-modal p{margin:0;line-height:1.7}.dojo-modal ul{text-align:left;gap:10px;margin:18px 0 22px;padding:0;list-style:none;display:grid}.dojo-modal li{border-left:3px solid var(--gold);background:#f7eedf;padding:10px 12px;line-height:1.6}.dojo-stamp{border:6px double var(--vermillion);width:148px;height:148px;color:var(--vermillion);place-items:center;margin:18px auto;font-family:serif;font-size:38px;font-weight:700;animation:.72s cubic-bezier(.2,.9,.15,1.25) 80ms both dojoStampPraise;display:grid;transform:rotate(-7deg)}@keyframes dojoStampPraise{0%{opacity:0;filter:blur(2px);transform:scale(1.9)rotate(-18deg)}58%{opacity:1;filter:blur();transform:scale(.92)rotate(-7deg)}to{transform:scale(1)rotate(-7deg)}}@keyframes dojoModalPraise{0%{transform:translateY(18px)scale(.96)}to{transform:translateY(0)scale(1)}}@keyframes dojoConfetti{0%{opacity:0;transform:translateY(-18px)rotate(0)}16%{opacity:1}to{opacity:0;transform:translateY(90px)rotate(18deg)}}.dojo-metrics{background:#443a3024;grid-template-columns:1fr 1fr;gap:1px;display:grid}.dojo-metric{background:#fffaf0db;padding:12px}.dojo-metric dt{color:var(--ash);margin:0 0 5px;font-size:12px}.dojo-metric dd{color:var(--sumi);margin:0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:22px;font-weight:700}@media (max-width:1040px){.dojo-workspace,.dojo-banner,.dojo-home-hero,.dojo-lesson-row{grid-template-columns:1fr}.dojo-lesson-meta{justify-content:flex-start}}@media (max-width:640px){.dojo-header{flex-direction:column;align-items:flex-start;gap:12px}.dojo-header-actions{justify-content:space-between;width:100%}.dojo-home-hero{padding:22px 16px}.dojo-home-hero h1{font-size:28px}.dojo-lesson-index{padding:18px 16px 24px}.dojo-section-header{flex-direction:column;align-items:flex-start}}