:root{--navy:#063d7a;--blue:#0879d1;--sky:#21a7e7;--green:#39a84f;--gold:#f4b500;--orange:#ff8a22;--ink:#12304a;--muted:#5c7184;--paper:#f7fbff;--white:#fff;--line:#dbe8f3;--shadow:0 18px 45px rgba(14,55,90,.12)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);line-height:1.5}.topline{height:8px;background:linear-gradient(90deg,#0879d1 0%,#19a9e8 32%,#50b84a 57%,#ffc400 78%,#ff8a22 100%)}.hero{background:radial-gradient(circle at 78% 15%,rgba(255,195,0,.22),transparent 26%),linear-gradient(135deg,#031e43,#07508f 58%,#0b7cc7);color:#fff;overflow:hidden}.hero-inner{max-width:1220px;margin:auto;padding:40px 28px 52px;display:grid;grid-template-columns:minmax(280px,1fr) minmax(420px,1.2fr);gap:42px;align-items:center}.logo{width:min(100%,520px);filter:drop-shadow(0 16px 28px rgba(0,0,0,.18));background:rgba(255,255,255,.97);border-radius:22px;padding:8px}.eyebrow{font-size:.75rem;font-weight:900;letter-spacing:.16em;color:#1689d2;margin-bottom:9px}.hero .eyebrow{color:#ffd24a}.hero h1{font-size:clamp(2.3rem,5vw,4.3rem);line-height:1.03;margin:.1rem 0 1rem;letter-spacing:-.04em}.hero h1 span{color:#ffd34d}.hero p{font-size:1.12rem;max-width:690px;color:#eaf5ff}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.primary,.ghost{border:0;border-radius:12px;padding:13px 18px;font-weight:850;font-size:.98rem;cursor:pointer}.primary{background:#ffc51b;color:#062c54;box-shadow:0 8px 22px rgba(0,0,0,.15)}.ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.35)}.promise{max-width:1220px;margin:-18px auto 0;padding:18px 22px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);display:flex;justify-content:space-between;gap:20px;align-items:center;position:relative;z-index:2}.promise strong{display:block;font-size:1.1rem}.promise span{color:var(--muted)}.promise-pills{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.promise-pills span{background:#edf7ff;color:#0a609d;padding:7px 10px;border-radius:999px;font-weight:750;font-size:.83rem}main,.rubric-section,.how,.sources{max-width:1220px;margin:auto;padding:70px 28px}.section-head{display:flex;justify-content:space-between;gap:25px;align-items:flex-end;margin-bottom:24px}.section-head h2,.rubric-section h2,.how h2,.sources h2{font-size:clamp(1.8rem,3vw,2.8rem);margin:.15rem 0 .5rem;letter-spacing:-.03em}.section-head p,.sources>p{color:var(--muted);max-width:760px}.notice{max-width:390px;padding:15px 18px;background:#fff9dc;border-left:5px solid var(--gold);border-radius:10px;font-size:.9rem}.grade-tabs{display:grid;grid-template-columns:repeat(13,1fr);gap:7px;margin-bottom:22px}.grade-tabs button{border:1px solid var(--line);background:#fff;border-radius:10px;padding:10px 5px;cursor:pointer;font-weight:850;color:#456074;transition:.18s}.grade-tabs button:hover{transform:translateY(-2px);border-color:#7bbbe5}.grade-tabs button.active{background:linear-gradient(135deg,#0879d1,#0a55a0);color:#fff;border-color:#0879d1;box-shadow:0 8px 18px rgba(8,121,209,.22)}.grade-panel{background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:26px}.grade-title{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:22px}.grade-title h3{font-size:2rem;margin:0}.grade-title p{margin:.2rem 0;color:var(--muted)}.band{padding:8px 11px;border-radius:999px;background:#eaf7ef;color:#2b7b42;font-weight:850;font-size:.78rem;white-space:nowrap}.subject-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.subject{border:1px solid var(--line);border-radius:17px;overflow:hidden;background:#fbfdff}.subject-head{padding:17px 18px;background:linear-gradient(135deg,#fff,#f0f8ff);display:flex;gap:12px;align-items:center;cursor:pointer}.subject-icon{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font-size:1.45rem;background:#e7f5ff}.subject-head h4{margin:0;font-size:1.08rem}.subject-head small{color:var(--muted)}.chev{margin-left:auto;font-weight:900;color:#7190a7}.subject-body{display:none;padding:0 16px 18px}.subject.open .subject-body{display:block}.comp{margin-top:13px;border-radius:14px;border:1px solid var(--line);background:#fff;overflow:hidden}.comp-top{padding:14px 15px 10px;border-left:6px solid var(--blue)}.comp-code{font-size:.72rem;letter-spacing:.1em;font-weight:950;color:#1689d2}.comp h5{font-size:1.03rem;margin:.18rem 0}.comp p{margin:.2rem 0;color:#425d70}.example{margin:10px 0 0;padding:10px 12px;background:#f3f9fd;border-radius:9px;font-size:.9rem}.example b{color:#0a679f}.checks{padding:0 15px 15px}.checks-title{font-size:.74rem;text-transform:uppercase;letter-spacing:.1em;color:#6d8293;font-weight:900;margin-top:12px}.checks ol{margin:.45rem 0 0;padding-left:22px}.checks li{padding:3px 0}.rubric-section{padding-top:10px}.rubric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.rubric-grid article{background:#fff;border:1px solid var(--line);border-top:5px solid #b9c9d5;border-radius:14px;padding:18px;box-shadow:0 7px 20px rgba(10,50,80,.06)}.rubric-grid article:nth-child(2){border-top-color:#f1c44b}.rubric-grid .meeting{border-top-color:#39a84f;background:#f4fff6}.rubric-grid article:nth-child(4){border-top-color:#1689d2}.rubric-grid p{color:var(--muted);margin-bottom:0}.how{background:linear-gradient(135deg,#062e5b,#0879d1);color:#fff;max-width:none;padding-left:max(28px,calc((100% - 1164px)/2));padding-right:max(28px,calc((100% - 1164px)/2))}.how .eyebrow{color:#ffd34d}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:26px}.steps>div{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:15px;padding:20px}.steps span{font-weight:950;color:#ffd34d}.steps b{display:block;font-size:1.15rem;margin-top:8px}.steps p{color:#dcefff}.sources{padding-top:65px}.source-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.source-grid a{display:block;text-decoration:none;color:#0a4f86;background:#fff;border:1px solid var(--line);border-radius:13px;padding:15px;font-weight:850}.source-grid small{font-weight:600;color:#6a7e8d}footer{background:#031e43;color:#dcefff;padding:28px max(28px,calc((100% - 1164px)/2));display:flex;justify-content:space-between;gap:25px;align-items:center}footer b{font-size:1.1rem;color:#fff}.footer-note{font-size:.82rem;color:#a9c4da;max-width:560px;text-align:right}
.grade-picker{display:flex;align-items:center;gap:12px;margin:0 0 18px;flex-wrap:wrap}
.grade-picker label{font-weight:800;color:#245b9e}
.grade-picker select{appearance:auto;border:2px solid #b8d7ee;border-radius:12px;background:#fff;padding:10px 38px 10px 13px;font:inherit;font-weight:700;color:#163b66;cursor:pointer;box-shadow:0 3px 10px rgba(22,59,102,.08)}
.grade-picker select:focus{outline:3px solid rgba(8,121,209,.2);border-color:#0879d1}
.subject-head{width:100%;display:grid;grid-template-columns:48px 1fr 28px;align-items:center;gap:12px;background:transparent;border-left:0;border-right:0;border-bottom:0;text-align:left;padding:18px;cursor:pointer;font:inherit}
.subject-head:hover{background:#f8fbff}

@media(max-width:950px){.hero-inner{grid-template-columns:1fr}.logo{max-width:430px;margin:auto}.promise,.section-head,.grade-title,footer{flex-direction:column;align-items:flex-start}.promise-pills{justify-content:flex-start}.grade-tabs{grid-template-columns:repeat(7,1fr)}.subject-grid,.steps,.source-grid{grid-template-columns:1fr 1fr}.rubric-grid{grid-template-columns:1fr 1fr}.footer-note{text-align:left}}@media(max-width:600px){.hero-inner{padding:28px 18px}.logo{width:100%}main,.rubric-section,.how,.sources{padding-left:18px;padding-right:18px}.promise{margin:0 12px;padding:17px}.grade-tabs{grid-template-columns:repeat(4,1fr)}.subject-grid,.steps,.source-grid,.rubric-grid{grid-template-columns:1fr}.grade-panel{padding:16px}.hero h1{font-size:2.4rem}}

.progression-note{margin:18px 0 24px;padding:18px 20px;border-radius:18px;background:linear-gradient(135deg,#eef8ff,#f6fff4);border:1px solid #cfe8e2;color:#214052;box-shadow:0 8px 24px rgba(18,68,92,.07)}
.progression-note b{color:#123e68}