:root{--bg:#f1eee6;--panel:#ffffff;--panel2:#ece7db;--line:#ddd6c8;--line2:#c6bfae;--ink:#1d2530;--ink2:#5b6470;--ink3:#8a93a0;--grid:rgba(40,55,75,0.06);--accent:#2f63d6;--accent-soft:rgba(47,99,214,0.1);--good:#1f9468;--warn:#bf6e2f;--warn-soft:rgba(191,110,47,0.12);--node-empty:#e3ddcf}[data-theme=dark]{--bg:#0f131a;--panel:#161b22;--panel2:#1d232d;--line:#283039;--line2:#3a4450;--ink:#e9edf3;--ink2:#98a2b1;--ink3:#5f6b7a;--grid:rgba(150,170,200,0.06);--accent:#5b8cff;--accent-soft:rgba(91,140,255,0.14);--good:#36b07e;--warn:#d98a52;--warn-soft:rgba(217,138,82,0.12);--node-empty:#222a36}*{box-sizing:border-box;margin:0;padding:0}::-webkit-scrollbar{width:9px;height:9px}::-webkit-scrollbar-thumb{background:var(--line2);border-radius:8px}::-webkit-scrollbar-track{background:transparent}body{background:var(--bg);color:var(--ink);font-family:var(--font-sans),system-ui,sans-serif;letter-spacing:-.01em;min-height:100vh;line-height:1.55}button{font-family:inherit}.mono{font-family:var(--font-mono),monospace}.display{font-family:var(--font-display),sans-serif}.app{min-height:100vh}.app,.rail{display:flex}.rail{width:78px;flex:0 0 auto;position:-webkit-sticky;position:sticky;top:0;height:100vh;z-index:20;background:var(--panel);border-right:1px solid var(--line);flex-direction:column;align-items:center;padding:20px 0}.rail-logo{width:13px;height:13px;border-radius:4px;background:var(--accent);margin-bottom:26px}.rail-btn{display:flex;flex-direction:column;align-items:center;gap:5px;width:58px;padding:10px 0;margin-bottom:4px;border-radius:11px;border:none;cursor:pointer;background:transparent;text-decoration:none}.rail-btn span{font-size:9.5px;letter-spacing:.01em;font-weight:500;color:var(--ink3)}.rail-btn svg{stroke:var(--ink3)}.rail-btn.active{background:var(--accent-soft)}.rail-btn.active span{color:var(--accent);font-weight:600}.rail-btn.active svg{stroke:var(--accent)}.rail-theme{margin-top:auto;width:40px;height:40px;border-radius:10px;background:transparent;border:1px solid var(--line);display:grid;place-items:center;cursor:pointer;color:var(--ink2)}.content{flex:1 1;min-width:0}.page{max-width:860px;margin:0 auto;padding:44px 46px 56px}.eyebrow{font-family:var(--font-mono),monospace;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink3);margin-bottom:8px}.h1{font-family:var(--font-display),sans-serif;font-size:34px;font-weight:600;margin:0 0 8px;letter-spacing:-.02em;line-height:1.15;color:var(--ink)}.lead{font-size:15.5px;color:var(--ink2);margin:0;line-height:1.55;max-width:560px}.panel{padding:22px 24px;border-radius:14px;background:var(--panel);border:1px solid var(--line)}.panel-title{font-size:14.5px;font-weight:600;color:var(--ink)}.panel-sub{font-family:var(--font-mono),monospace;font-size:11px;color:var(--ink3)}.primary-btn{gap:8px;width:100%;padding:14px;border:none;border-radius:11px;background:var(--accent);color:#fff;font-weight:600;font-size:15px;letter-spacing:-.01em}.ghost-btn,.primary-btn{display:flex;align-items:center;justify-content:center;cursor:pointer;text-decoration:none}.ghost-btn{padding:14px 22px;border:1px solid var(--line);border-radius:11px;background:transparent;color:var(--ink2);font-weight:500;font-size:14px}.grid-bg{background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:38px 38px}.tag-accent{font-family:var(--font-mono),monospace;font-size:9px;letter-spacing:.06em;color:#fff;background:var(--accent);padding:3px 7px;border-radius:5px;white-space:nowrap}.home-grid{display:grid;grid-template-columns:1.5fr 1fr;grid-gap:14px;gap:14px;align-items:start}@media (max-width:900px){.home-grid{grid-template-columns:1fr}}.sugg-row{display:flex;align-items:center;gap:13px;width:100%;padding:12px 14px;border-radius:11px;border:1px solid var(--line);background:var(--panel2);cursor:pointer;text-decoration:none;text-align:left}.sugg-row.next{border-color:var(--accent);background:var(--accent-soft)}.sugg-title{font-weight:600;font-size:14.5px;color:var(--ink)}.sugg-sub{font-size:12px;color:var(--ink3);margin-top:2px}.sugg-tag{font-family:var(--font-mono),monospace;font-size:9.5px;letter-spacing:.05em;padding:4px 8px;border-radius:6px;flex:0 0 auto;color:var(--ink2);background:var(--panel);border:1px solid var(--line)}.sugg-tag.next{color:#fff;background:var(--accent);border:none}.sugg-tag.weak{color:var(--warn);background:var(--warn-soft);border:none}.metric-cell{padding:13px 14px;border-radius:11px;background:var(--panel2);border:1px solid var(--line)}.metric-label{font-family:var(--font-mono),monospace;font-size:9.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink3);margin-bottom:7px}.metric-value{font-family:var(--font-display),sans-serif;font-size:21px;font-weight:700;line-height:1;color:var(--ink)}.metric-delta{font-family:var(--font-mono),monospace;font-size:10.5px;margin-top:6px;color:var(--ink3)}.metric-delta.good{color:var(--good)}.wide-widget{display:flex;align-items:center;gap:15px;padding:18px 20px;border-radius:14px;background:var(--panel);border:1px solid var(--line);cursor:pointer;text-align:left;text-decoration:none;width:100%}.wide-widget .big{font-family:var(--font-display),sans-serif;font-size:26px;font-weight:700;color:var(--accent);flex:0 0 auto}.map-shell{position:relative;min-height:100vh}.map-scroll{padding:34px 44px 130px}.map-inner{max-width:940px;margin:0 auto}.prep-bar-wrap{flex:1 1;max-width:330px}.legend{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.legend-item{display:inline-flex;align-items:center;gap:6px;font-size:11px;color:var(--ink2)}.grid-areas{display:grid;grid-template-columns:1fr 1fr;grid-gap:14px;gap:14px}@media (max-width:820px){.grid-areas{grid-template-columns:1fr}}.area-block{padding:15px 16px;border-radius:14px;background:var(--panel);border:1px solid var(--line)}.area-block.next{border:1.5px solid var(--accent)}.area-head{display:flex;align-items:baseline;gap:8px;margin-bottom:12px}.area-dot{width:9px;height:9px;border-radius:3px;flex:0 0 auto;align-self:center}.area-name{font-size:14px;font-weight:600;color:var(--ink);flex:1 1}.area-count{font-size:9.5px}.area-count,.area-hint{font-family:var(--font-mono),monospace;color:var(--ink3)}.area-hint{font-size:10px;margin-top:12px}.map-cta{position:fixed;bottom:24px;left:calc(50% + 39px);transform:translateX(-50%);z-index:16;display:flex;align-items:center;gap:18px;padding:12px 12px 12px 20px;border-radius:14px;background:var(--panel);border:1px solid var(--line);box-shadow:0 12px 40px rgba(30,40,60,.16)}.map-cta-title{font-family:var(--font-display),sans-serif;font-weight:600;font-size:15.5px;color:var(--ink)}.map-cta .primary-btn{width:auto;padding:13px 22px}.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:10px;gap:10px;margin-bottom:12px}@media (max-width:820px){.kpi-grid{grid-template-columns:1fr 1fr}}.drawer-label{font-family:var(--font-mono),monospace;font-size:9.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3);margin-bottom:8px}.list-row{display:flex;align-items:center;gap:15px;padding:15px 18px;border-radius:12px;background:var(--panel);border:1px solid var(--line)}.list-dot{width:9px;height:9px;border-radius:3px;flex:0 0 auto}.list-title{font-weight:600;font-size:15px;color:var(--ink)}.list-sub{font-size:12px;color:var(--ink3);margin-top:2px}.pill{font-family:var(--font-mono),monospace;font-size:11px;color:var(--ink2);padding:5px 11px;border-radius:7px;background:var(--panel2);border:1px solid var(--line);white-space:nowrap}.hbar{height:5px;background:var(--line);overflow:hidden}.hbar,.hbar>div{border-radius:4px}.hbar>div{height:100%;background:var(--accent)}.stat-card{padding:20px;border-radius:14px;background:var(--panel);border:1px solid var(--line)}.stat-card.hero{background:var(--accent-soft);border:1px solid var(--accent)}.stat-label{font-family:var(--font-mono),monospace;font-size:10px;letter-spacing:.05em;text-transform:uppercase;color:var(--ink2);margin-bottom:9px}.stat-value{font-family:var(--font-display),sans-serif;font-size:34px;font-weight:700;line-height:1;color:var(--ink)}.stat-value small{font-size:17px;color:var(--ink3);font-weight:500}.stat-foot{font-family:var(--font-mono),monospace;font-size:11px;color:var(--ink3);margin-top:9px}.stat-foot.good{color:var(--good)}.weak-chip{font-size:12.5px;color:var(--warn);padding:7px 13px;border-radius:8px;background:var(--warn-soft);border:1px solid var(--warn)}.sess{min-height:100vh;display:flex;flex-direction:column}.sess-top{display:flex;align-items:center;gap:18px;padding:20px 30px}.sess-close{width:36px;height:36px;border-radius:9px;background:var(--panel);border:1px solid var(--line);color:var(--ink2);font-size:16px;cursor:pointer;flex:0 0 auto;text-decoration:none;display:grid;place-items:center}.kind-chip{display:inline-flex;align-items:center;gap:8px;padding:6px 13px;border-radius:8px;background:var(--panel);border:1px solid var(--line);font-family:var(--font-mono),monospace;font-size:11px;color:var(--ink2)}.kind-chip .dot{width:8px;height:8px;border-radius:3px;background:var(--accent)}.sess-body{flex:1 1;display:flex;align-items:center;justify-content:center;padding:20px}.sess-inner{width:600px;max-width:92%}.stem-lg{font-family:var(--font-display),sans-serif;font-size:30px;font-weight:600;margin:0 0 32px;letter-spacing:-.01em;color:var(--ink);line-height:1.35;white-space:pre-line}.opts{flex-direction:column;gap:11px}.opt,.opts{display:flex}.opt{align-items:center;gap:15px;width:100%;padding:15px 18px;border-radius:12px;border:1px solid var(--line);background:var(--panel);color:var(--ink);font-family:var(--font-display),sans-serif;font-size:17px;cursor:pointer;text-align:left;transition:border-color .12s ease,background .12s ease}.opt:hover:not(:disabled){border-color:var(--accent)}.opt:disabled{cursor:default}.opt-letter{width:30px;height:30px;border-radius:8px;background:var(--panel2);display:grid;place-items:center;font-family:var(--font-mono),monospace;font-size:13px;color:var(--ink3);flex:0 0 auto}.opt.picked{border-color:var(--accent);background:var(--accent-soft)}.opt.right{border-color:var(--good)}.opt.right .opt-letter{background:var(--good);color:#fff}.opt.wrong{border-color:var(--warn)}.opt.wrong .opt-letter{background:var(--warn);color:#fff}.placement-note{text-align:center;color:var(--ink3);font-size:13px;margin-top:16px}.qsplit{display:flex;gap:20px;align-items:center;margin-bottom:22px;padding:18px;border-radius:14px;background:var(--panel);border:1px solid var(--line)}.figure{color:var(--ink);flex:1 1 58%;min-width:0}.figure svg{display:block;width:100%;height:auto;max-height:300px}.givens{flex:1 1 42%;display:flex;flex-direction:column;gap:9px}.givens div{font-family:var(--font-display),sans-serif;font-size:16px;color:var(--ink);line-height:1.4}.stem-lg.with-figure{font-size:22px;margin-bottom:24px}.figure.sm{max-width:260px;margin:0 0 22px;padding:14px;border-radius:12px;background:var(--panel);border:1px solid var(--line)}@media (max-width:700px){.qsplit{flex-direction:column;align-items:stretch;gap:12px}}.sess-ack{text-align:center;font-family:var(--font-mono),monospace;font-size:12px;color:var(--ink3);margin-top:18px}.fb{width:600px;max-width:92%;margin:0 auto;padding:44px 0 40px}.fb-head{display:flex;align-items:center;gap:14px;margin-bottom:24px}.fb-icon{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;font-size:21px;font-weight:700;flex:0 0 auto}.fb-icon.ok{background:var(--good);color:#fff}.fb-icon.no{background:var(--warn-soft);color:var(--warn);border:1.5px solid var(--warn)}.fb-title{font-family:var(--font-display),sans-serif;font-size:23px;font-weight:600}.fb-title.ok{color:var(--good)}.fb-sub{font-family:var(--font-mono),monospace;font-size:12.5px;color:var(--ink2);margin-top:3px}.fb-skill{padding:15px 18px;border-radius:12px;background:var(--accent-soft);border:1px solid var(--accent);margin-bottom:22px}.fb-skill .drawer-label{color:var(--accent);margin-bottom:6px}.fb-skill div:last-child{font-size:14.5px;color:var(--ink);line-height:1.45}.fb-section-label{font-family:var(--font-mono),monospace;font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3);margin-bottom:12px}.step-row{display:flex;align-items:flex-start;gap:13px;padding:13px 15px;border-radius:11px;margin-bottom:8px;background:var(--panel);border:1px solid var(--line)}.step-row .mark{width:22px;height:22px;border-radius:6px;flex:0 0 auto;display:grid;place-items:center;font-size:12px;font-weight:600;font-family:var(--font-mono),monospace;background:var(--accent-soft);color:var(--accent)}.step-row .txt{font-family:var(--font-display),sans-serif;font-size:15.5px;color:var(--ink);line-height:1.5;padding-top:1px}.fb-next{margin-top:16px;padding:17px 19px;border-radius:12px;background:var(--panel);border:1px solid var(--line)}.fb-next div:last-child{font-size:14.5px;color:var(--ink);line-height:1.5}.fb-actions{display:flex;gap:11px;margin-top:26px}.fb-actions .primary-btn{flex:1 1}@media (max-width:700px){.rail{position:fixed;top:auto;bottom:0;left:0;right:0;width:100%;height:auto;flex-direction:row;justify-content:space-around;align-items:center;padding:4px 8px calc(4px + env(safe-area-inset-bottom));border-right:none;border-top:1px solid var(--line);z-index:40}.rail-logo{display:none}.rail-btn{margin-bottom:0;padding:7px 0}.rail-theme{margin:0;width:36px;height:36px}.content{padding-bottom:66px}.page{padding:26px 18px 90px}.h1{font-size:27px}.map-scroll{padding:24px 14px 190px}.map-cta{left:12px;right:12px;transform:none;width:auto;bottom:78px;justify-content:space-between}.map-cta.hidden{transform:translateY(24px)}.drawer{width:100vw;max-width:100vw}.legend{gap:8px}.sess-top{padding:14px;gap:10px;flex-wrap:wrap}.sess-top .kind-chip{font-size:10px}.stem-lg{font-size:22px;margin-bottom:24px}.opt{font-size:15.5px;padding:13px 14px}.fb{padding:28px 0 32px}.fb-actions{flex-direction:column}}.banner{text-align:center;padding:20px;max-width:520px;margin:auto}.banner h1{font-family:var(--font-display),sans-serif;font-size:26px;font-weight:600;margin-bottom:10px}.banner p{color:var(--ink2);margin-bottom:24px}.banner .primary-btn{display:inline-flex;width:auto;padding:14px 28px}.spin{text-align:center;color:var(--ink3);padding:80px 0;font-family:var(--font-mono),monospace;font-size:13px}.auth-card{width:min(400px,calc(100vw - 40px));padding:34px 32px;background:var(--panel);border:1px solid var(--line);border-radius:16px}.auth-label{display:block;font-family:var(--font-mono),monospace;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink3);margin-bottom:7px}.auth-input{width:100%;padding:13px 14px;border-radius:11px;font-size:15px;background:var(--panel2);border:1px solid var(--line);color:var(--ink);font-family:inherit;outline:none}.auth-input:focus{border-color:var(--accent)}.auth-divider{display:flex;align-items:center;gap:12px;margin:18px 0;color:var(--ink3);font-size:11.5px}.auth-divider:after,.auth-divider:before{content:"";flex:1 1;height:1px;background:var(--line)}.auth-sent{text-align:left}.rail-user{margin-top:10px;width:40px;height:40px;border-radius:10px;background:var(--accent-soft);color:var(--accent);border:none;display:grid;place-items:center;font-weight:600;font-size:14px;cursor:pointer}.rail-user.active{outline:2px solid var(--accent)}@keyframes shimmer{0%{background-position:-420px 0}to{background-position:420px 0}}.skel{border-radius:10px;background:linear-gradient(90deg,var(--panel2) 25%,var(--line) 50%,var(--panel2) 75%);background-size:840px 100%;animation:shimmer 1.15s linear infinite}@keyframes spinner-rotate{to{transform:rotate(1turn)}}.spinner{display:inline-block;width:16px;height:16px;border-radius:50%;border:2px solid;border-top:2px solid transparent;animation:spinner-rotate .7s linear infinite}@media (prefers-reduced-motion:reduce){.spinner{animation-duration:2.4s}}.btn-label{display:inline-flex;align-items:center;gap:8px}.btn-spinner{position:absolute;top:50%;left:50%;margin:-8px 0 0 -8px}button[aria-busy=true]{cursor:progress}.tapable:disabled,.tapable[aria-disabled=true]:not([aria-busy=true]){opacity:.55;cursor:not-allowed}.tapable{transition:transform 80ms ease,filter .12s ease}.tapable:focus-visible{outline:2px solid var(--accent);outline-offset:2px}@media (hover:hover){.tapable:hover{transform:translateY(-1px)}button.tapable:hover{filter:brightness(1.05)}}.tapable:active{transform:scale(.978)}@media (prefers-reduced-motion:reduce){.tapable,.tapable:active,.tapable:hover{transition:none;transform:none}}a:has(>.nav-pending){position:relative}.nav-pending{position:absolute;inset:0;border-radius:inherit;z-index:2;display:grid;place-items:center;color:var(--accent);background:color-mix(in srgb,var(--panel) 66%,transparent)}.rail-ver{font-family:var(--font-mono),monospace;font-size:8.5px;color:var(--ink3);letter-spacing:.05em;margin:-20px 0 18px}