:root{--bg:#F4F4F5;--surface:#fff;--muted:#F7F7F8;--border:#E8E8EB;--divider:#EFEFF2;--ink:#0B0B0F;--ink2:#3F3F46;--ink3:#71717A;--ink4:#A1A1AA;--brand:#5B5BF0;--tint:#EEF0FF;--pos:#12A36B;--warn:#D98A00;--wtint:#FFF6E0;--danger:#E5484D;
--card:0 1px 2px rgba(16,24,40,.04),0 12px 32px -8px rgba(16,24,40,.08);--pill:0 1px 2px rgba(16,24,40,.06),0 4px 12px rgba(16,24,40,.06);--hero:0 24px 48px -16px rgba(10,10,12,.45),inset 0 1px 0 rgba(255,255,255,.06);--focus:0 0 0 3px rgba(91,91,240,.28)}
*{box-sizing:border-box;margin:0}
body{background:var(--bg);color:var(--ink);font:400 14px/20px Inter,ui-sans-serif,system-ui,-apple-system,'Segoe UI',sans-serif;font-variant-numeric:tabular-nums;-webkit-font-smoothing:antialiased}
.wrap{max-width:1180px;margin:0 auto;padding:24px 20px 40px}
button{font:inherit;cursor:pointer}
.toolbar{display:flex;align-items:center;gap:12px;background:#fff;border-radius:999px;box-shadow:var(--pill);padding:6px 8px 6px 6px;width:fit-content;max-width:100%;margin-bottom:24px;flex-wrap:wrap}
.toolbar{width:100%}
.grow{flex:1}
.pill-tag{background:var(--brand);color:#fff;border-radius:999px;padding:8px 16px;font-weight:500}
.free{background:#E7F8EF;color:var(--pos);font-size:11px;font-weight:600;padding:2px 8px;border-radius:999px}
.toolbar button{background:none;border:0;padding:8px 12px;border-radius:999px;font-weight:500;color:var(--ink)}
.toolbar button:hover{background:var(--muted)}
.sep{width:1px;height:20px;background:var(--border)}
.grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
.card{background:var(--surface);border-radius:24px;box-shadow:var(--card);padding:32px}
.right{display:grid;gap:24px;position:sticky;top:24px}
.right .card{padding:24px}
h1{font-size:44px;line-height:48px;font-weight:600;letter-spacing:-.03em}
h1 span{color:var(--ink4)}
.sub{color:var(--ink3);margin:8px 0 24px}
.tabs{display:flex;gap:6px;overflow-x:auto;padding-bottom:4px;margin-bottom:24px;scroll-snap-type:x proximity}
.tabs button{flex:none;height:36px;padding:0 14px;border:0;border-radius:999px;background:none;color:var(--ink3);font-weight:500;scroll-snap-align:start}
.tabs button:hover{background:var(--muted)}
.tabs button.on{background:var(--brand);color:#fff;box-shadow:var(--pill)}
.sem-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:12px;color:var(--ink3)}
.sem-head h2{font-size:20px;font-weight:600;color:var(--ink);letter-spacing:-.01em}
h2 small{font-size:13px;font-weight:400;color:var(--ink3);margin-left:6px}
.brand{color:var(--brand);font-size:18px;font-weight:600}
.list{border:1px solid var(--border);border-radius:16px;overflow:hidden}
.row{display:flex;justify-content:space-between;align-items:center;gap:12px;min-height:72px;padding:12px 16px;border-bottom:1px solid var(--divider)}
.row:last-child{border-bottom:0}
.row b{font-size:15px;font-weight:600;margin-right:8px}
.row p{color:var(--ink3);margin-top:2px}
.badge{font-size:11px;font-weight:600;letter-spacing:.02em;background:var(--tint);color:var(--brand);padding:2px 8px;border-radius:6px;margin-right:6px}
.badge.amber{background:var(--wtint);color:var(--warn)}.badge.grey{background:var(--muted);color:var(--ink3)}
.info{display:inline-grid;place-items:center;width:18px;height:18px;border-radius:50%;background:var(--wtint);color:var(--warn);font-size:11px;font-weight:700;cursor:help}
.ghost-row{background:var(--muted);border-left:2px dashed var(--ink4)}
.ctl{display:flex;align-items:center;gap:12px;flex:none}
.cr{color:var(--ink2);font-weight:500}
.rep{font-size:12px;color:var(--ink3);display:flex;gap:4px;align-items:center}
select{font:inherit;appearance:none;-webkit-appearance:none;background:var(--muted) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%2371717A' stroke-width='2'%3E%3Cpath d='m2 4 4 4 4-4'/%3E%3C/svg%3E") no-repeat right 12px center;border:1px solid var(--border);border-radius:12px;padding:0 32px 0 14px;height:44px;color:var(--ink);cursor:pointer}
select:hover{border-color:var(--ink4)}
select:focus,input:focus,button:focus-visible{outline:0;box-shadow:var(--focus);border-color:var(--brand)}
select.grade{width:96px;font-weight:600}
.ga{color:var(--pos)}.gb{color:var(--brand)}.gc,.gw{color:var(--warn)}.gd{color:var(--danger)}
.gchip{font-weight:600;padding:10px 16px}
.x{border:0;background:none;color:var(--ink4);width:32px;height:32px;border-radius:8px}.x:hover{background:var(--muted);color:var(--danger)}
.slot{margin-top:16px;padding:16px;border:1px dashed var(--border);border-radius:16px;display:grid;gap:10px}
.slot-top{display:flex;justify-content:space-between}
.meter{color:var(--ink3);font-weight:500}.meter.ok{color:var(--pos)}.meter.over{color:var(--warn)}
.bar{height:6px;background:var(--divider);border-radius:99px;overflow:hidden}.bar i{display:block;height:100%;background:var(--ink4);border-radius:99px;transition:width .3s}
.bar i.ok{background:var(--pos)}.bar i.over{background:var(--warn)}
.slot select{width:100%;color:var(--brand);font-weight:500;border-style:dashed;background-color:#fff}
.note{margin-top:20px;background:var(--muted);border-radius:12px;padding:12px 14px;font-size:12px;line-height:16px;color:var(--ink3)}
.warn{color:var(--warn)}
.hero{background:linear-gradient(145deg,#1A1A1F,#0C0C0E);box-shadow:var(--hero);border-radius:24px;padding:28px;color:#fff}
.chip-row{display:flex;align-items:center;gap:10px;font-weight:500}
.chip{width:28px;height:28px;border-radius:8px;background:#2A2A2F;display:grid;place-items:center;font-size:14px}
.big{margin:20px 0 4px;display:flex;align-items:baseline;gap:8px}
.big span{font-size:72px;line-height:72px;font-weight:700;letter-spacing:-.04em;background:linear-gradient(180deg,#9A9CFF,#6F6FF7);-webkit-background-clip:text;background-clip:text;color:transparent}
.big small{font-size:20px;font-weight:500;color:#A1A1AA}
.hero p{color:#A1A1AA}
h3{font-size:16px;font-weight:600;margin-bottom:16px}
h4{font-size:14px;font-weight:600;margin:20px 0 8px;padding-top:16px;border-top:1px solid var(--divider)}
.well{background:var(--muted);border-radius:16px;padding:16px;display:grid;grid-template-columns:repeat(3,1fr);text-align:center;font-size:12px;color:var(--ink3)}
.well b{display:block;font-size:22px;line-height:28px;font-weight:600;color:var(--pos)}
dl div{display:flex;justify-content:space-between;padding:4px 0;color:var(--ink3)}
dd{font-weight:600;color:var(--pos)}
label{display:block;font-size:13px;font-weight:500;color:var(--ink2);margin-bottom:12px}
input[type=text],input:not([type]){display:block;width:100%;height:44px;margin-top:6px;padding:0 14px;border:1px solid var(--border);background:var(--muted);border-radius:12px;font:inherit}
.cmp{display:flex;justify-content:space-between;text-align:center;font-size:12px;color:var(--ink3);margin-bottom:28px}
.cmp b{display:block;font-size:14px;color:var(--ink);margin-top:2px}.cmp b.warn{color:var(--warn)}
.track{position:relative;height:6px;border-radius:99px;background:linear-gradient(90deg,#F59E0B,#E7C23A,#22C08A,#6C7BF5)}
.track i{position:absolute;top:50%;width:14px;height:14px;margin:-7px 0 0 -7px;border-radius:50%;background:#000;border:2px solid #fff;box-shadow:var(--pill);transition:left .5s cubic-bezier(.22,1,.36,1)}
.track em{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);background:#000;color:#fff;font:600 11px/1 Inter,sans-serif;padding:6px 8px;border-radius:8px}
.ticks{display:flex;justify-content:space-between;font-size:11px;color:var(--ink3);margin-top:8px}
.ghost{margin-top:20px;width:100%;height:40px;border:1px dashed var(--border);background:none;border-radius:12px;color:var(--ink3)}.ghost:hover{color:var(--danger)}
footer{margin-top:32px;font-size:12px;color:var(--ink4)}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);background:#111;color:#fff;padding:10px 18px;border-radius:999px;opacity:0;transition:.2s;pointer-events:none}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:1023px){.grid{grid-template-columns:1fr}.right{position:static;order:-1}h1{font-size:32px;line-height:36px}.big span{font-size:56px;line-height:56px}.card{padding:20px}}
@media(max-width:560px){.row{flex-direction:column;align-items:flex-start}.ctl{width:100%;justify-content:flex-end}}
@media print{body{background:#fff}.toolbar,.tabs,.slot select,#reset,.note,.x,footer{display:none}.card,.hero{box-shadow:none}.grid{display:block}.right{position:static}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}

/* ---- layout v2: fixed shell, independent scrolling panels ---- */
html,body{height:100%}
.wrap{height:100vh;display:flex;flex-direction:column;padding-bottom:20px}
.toolbar{flex:none}
.grid{flex:1;min-height:0;align-items:stretch}
.left{display:flex;flex-direction:column;min-height:0;padding:0;overflow:hidden}
.scroll{overflow-y:auto;padding:32px;flex:1;scrollbar-width:thin}
.right{position:static;overflow-y:auto;min-height:0;padding:4px 12px 24px;margin:-4px -12px;align-content:start;scrollbar-width:thin}
.sem{margin-top:20px}
.sem-head{position:sticky;top:0;z-index:2;background:#fff;margin:0;padding:14px 0 10px;border-bottom:1px solid var(--divider)}
.list{margin-top:12px}
.cmp{margin-bottom:48px}
.ticks{margin-top:10px}
.hero .chip svg{width:16px;height:16px}
@media(max-width:1023px){.wrap{height:auto}.left,.scroll,.right{overflow:visible}.right{margin:0;padding:0}.scroll{padding:20px}}

/* goal planner */
input[type=number]{display:block;width:100%;height:44px;margin-top:6px;padding:0 14px;border:1px solid var(--border);background:var(--muted);border-radius:12px;font:inherit}
#plan h4{margin:16px 0 8px}
.hint{color:var(--ink3);font-size:13px;line-height:18px}
.verdict{border-radius:16px;padding:14px 16px;background:var(--muted)}
.verdict b{font-size:15px}.verdict p{margin-top:4px;color:var(--ink2);line-height:20px}
.verdict.ok{background:#E7F8EF}.verdict.ok b{color:var(--pos)}
.verdict.warn{background:var(--wtint)}.verdict.warn b{color:var(--warn)}
.verdict.bad{background:#FDECEC}.verdict.bad b{color:var(--danger)}
dd.bad{color:var(--danger)}