:root{--navy:#09182d;--navy2:#122642;--blue:#2755d6;--teal:#128c82;--ink:#18263f;--muted:#5d6b82;--line:#dde5ef;--paper:#f4f7fb;--white:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,Manrope,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;line-height:1.55}a{color:inherit}button,input,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}:focus-visible{outline:3px solid #46c5cb;outline-offset:3px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.container{max-width:1190px;margin:auto;padding-left:24px;padding-right:24px}.site-header{background:#fff;border-bottom:1px solid #e4e8f0;position:sticky;top:0;z-index:30}.nav-inner{display:flex;align-items:center;justify-content:space-between;min-height:78px;gap:15px}.brand-link{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:0}.brand-link img{height:43px;width:43px;object-fit:cover;border-radius:50%}.brand-link strong{display:block;color:#121c37;font-size:19px;letter-spacing:-.05em;line-height:1.15}.brand-link strong em{color:#0a9388;font-style:normal}.brand-link small{display:block;color:#7c8499;font-size:10px;letter-spacing:.16em;font-weight:800}.nav-links{display:flex;align-items:center;gap:20px;flex-wrap:wrap}.nav-links a{font-size:13px;color:#485573;text-decoration:none;font-weight:750}.nav-links a:hover{color:var(--blue)}.nav-links .nav-cta{background:var(--blue);color:white;padding:11px 16px;border-radius:12px}.nav-links .nav-cta:hover{color:white;background:#153eb5}.hero{position:relative;color:#fff;background:radial-gradient(ellipse at 83% 25%,#1a4b72 0,transparent 38%),linear-gradient(128deg,#09182d,#0a2548 64%,#0f335a);overflow:hidden}.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(#65a7dc10 1px,transparent 1px),linear-gradient(90deg,#65a7dc10 1px,transparent 1px);background-size:44px 44px;mask-image:linear-gradient(90deg,transparent 1%,black)}.hero .container{position:relative;padding-top:65px;padding-bottom:65px}.eyebrow{font-size:11px;letter-spacing:.18em;text-transform:uppercase;font-weight:850;color:#77ebe2}.hero h1{font-size:clamp(37px,5vw,63px);letter-spacing:-.055em;line-height:1.08;margin:17px 0 17px;max-width:810px}.hero h1 span{color:#7bdfdf}.hero p{font-size:17px;max-width:735px;color:#c9d9e9;margin:0}.hero-stats{display:flex;gap:12px;flex-wrap:wrap;margin-top:29px}.hero-stats span{background:#ffffff14;border:1px solid #ffffff36;border-radius:10px;padding:10px 15px;color:#d9e9f5;font-size:13px}.hero-stats b{color:#fff;font-size:17px}.notice{background:#fff7e8;color:#6d4c1e;border:1px solid #f3d9a7;border-radius:14px;padding:14px 17px;font-size:13px;margin:26px 0}.section-title{display:flex;align-items:end;justify-content:space-between;gap:15px;flex-wrap:wrap;margin:35px 0 18px}.section-title h2{font-size:28px;margin:0;letter-spacing:-.035em}.section-title p{color:var(--muted);font-size:14px;margin:7px 0 0}.search-row{display:flex;gap:14px;align-items:center;margin:15px 0 20px;flex-wrap:wrap}.search-row label{flex:1;min-width:250px}.search-input{display:block;width:100%;padding:15px 18px;border:1px solid #cbd5e6;border-radius:13px;background:white;color:var(--ink);box-shadow:0 8px 19px #09234405}.search-status{font-size:13px;color:var(--muted);font-weight:750}.subject-list{display:grid;gap:15px;margin-bottom:64px}.subject-block{background:white;border:1px solid var(--line);border-radius:18px;box-shadow:0 8px 24px #0e254005;overflow:hidden}.subject-block[hidden]{display:none!important}.subject-block summary{display:flex;align-items:center;gap:20px;justify-content:space-between;cursor:pointer;padding:21px 25px;list-style:none}.subject-block summary::-webkit-details-marker{display:none}.subject-block summary:hover{background:#f9fbff}.subject-name{display:flex;align-items:center;gap:15px;min-width:0}.subject-no{display:grid;place-items:center;border-radius:12px;background:#e7f5f2;color:#097e73;font-weight:900;width:46px;height:46px;flex:0 0 46px;font-size:14px}.subject-name h3{margin:0;font-size:19px;line-height:1.25}.subject-name p{margin:4px 0 0;font-size:13px;color:var(--muted)}.subject-toggle{font-size:24px;color:var(--blue);font-weight:800}.subject-block[open] .subject-toggle{transform:rotate(45deg)}.set-grid{border-top:1px solid var(--line);background:#f9fbff;padding:20px;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:11px}.set-tile{border:1px solid #e0e7f2;border-radius:13px;background:white;display:flex;flex-direction:column;gap:6px;padding:16px 13px;text-decoration:none;transition:transform .12s,border-color .12s,box-shadow .12s;min-width:0}.set-tile:hover{border-color:var(--blue);transform:translateY(-2px);box-shadow:0 11px 20px #143d9614}.set-tile b{font-size:15px;color:var(--navy)}.set-tile small{font-size:12px;color:var(--muted)}.set-tile span{font-size:12px;color:#0e8379;font-weight:800;margin-top:4px}.empty{display:none;background:#fff;border:1px dashed #c5d2e2;border-radius:14px;padding:25px;color:#617187}.empty.show{display:block}.info-strip{background:#e8f1fa;border:1px solid #d5e3f3;border-radius:16px;padding:18px 21px;margin-bottom:42px;font-size:14px;color:#324a68}.info-strip strong{color:var(--navy)}.site-footer{margin-top:45px;background:#101a33;color:#c4cee4;padding:35px 0}.footer-inner{display:flex;justify-content:space-between;align-items:start;gap:18px;flex-wrap:wrap;font-size:13px}.footer-inner a{color:#e1f3ff;margin-right:12px}.footer-inner strong{color:white}
@media(max-width:930px){.set-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.nav-links{gap:12px}.nav-links a{font-size:12px}}
@media(max-width:650px){.container{padding-left:17px;padding-right:17px}.nav-inner{min-height:70px}.brand-link strong{font-size:17px}.brand-link img{width:37px;height:37px}.nav-links a:not(.nav-cta){display:none}.nav-links .nav-cta{font-size:11px;padding:9px 10px}.hero .container{padding-top:44px;padding-bottom:44px}.hero p{font-size:15px}.hero h1{font-size:39px}.hero-stats{gap:8px}.hero-stats span{padding:9px 11px;font-size:11px}.hero-stats b{font-size:14px}.section-title h2{font-size:24px}.subject-block summary{padding:16px;gap:8px}.subject-name{gap:10px}.subject-no{width:38px;height:38px;flex-basis:38px;font-size:12px}.subject-name h3{font-size:16px}.subject-name p{font-size:11px}.set-grid{padding:12px;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.set-tile{padding:13px 10px}.search-row label{min-width:100%}}
@media(max-width:350px){.nav-links .nav-cta{display:none}.subject-name h3{font-size:15px}}