:root{--ink:#101827;--muted:#657184;--line:#e4e8ee;--paper:#f8f9fb;--navy:#102a43;--blue:#0b7cff;--sky:#dff1ff;--white:#fff;--max:1180px;--shadow:0 24px 70px rgba(16,42,67,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(calc(100% - 40px),var(--max));margin:auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(248,249,251,.88);backdrop-filter:blur(18px);border-bottom:1px solid rgba(228,232,238,.85)}.nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{font-weight:900;letter-spacing:.10em;font-size:15px}.brand span{display:block;font-size:9px;color:var(--muted);letter-spacing:.24em;margin-top:-2px}.navlinks{display:flex;gap:22px;align-items:center;font-size:12px;color:#344256;font-weight:700}.navlinks a:hover{color:var(--blue)}.cta{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--navy);background:var(--navy);color:#fff;padding:12px 20px;border-radius:999px;font-weight:800;font-size:12px;transition:.2s}.cta:hover{transform:translateY(-1px);box-shadow:0 10px 25px rgba(16,42,67,.18)}.cta.ghost{background:#fff;color:var(--navy);border-color:var(--line)}.menu{display:none;border:0;background:none;font-size:24px}
.hero{padding:44px 0 72px;background:radial-gradient(circle at 80% 15%,#dff1ff 0,#f8f9fb 35%,#f8f9fb 70%)}.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;align-items:center;gap:54px}.eyebrow{text-transform:uppercase;letter-spacing:.18em;font-size:10px;color:#6c7787;font-weight:900}.hero h1{font-size:clamp(44px,6.4vw,78px);line-height:1.02;letter-spacing:-.055em;margin:18px 0 22px;max-width:690px}.hero h1 em{font-style:normal;color:var(--blue)}.lead{font-size:18px;color:#5b6879;max-width:650px}.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}.hero-media{position:relative}.hero-media img{width:100%;height:650px;object-fit:cover;border-radius:28px;box-shadow:var(--shadow)}.hero-label{position:absolute;left:22px;bottom:22px;background:rgba(16,42,67,.90);color:#fff;border-radius:18px;padding:16px 18px;backdrop-filter:blur(10px)}.hero-label strong{display:block;font-size:13px}.hero-label span{font-size:11px;color:#dbe8f3}
.metrics{margin-top:42px;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);padding-top:22px}.metric strong{font-size:22px;display:block;letter-spacing:-.04em}.metric span{font-size:11px;color:var(--muted)}
.section{padding:92px 0}.section.alt{background:#eef2f6}.section.dark{background:var(--navy);color:#fff}.section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:36px}.section-head h2{margin:8px 0 0;font-size:clamp(31px,4.2vw,50px);line-height:1.08;letter-spacing:-.045em}.section-head p{max-width:580px;color:var(--muted);margin:0}.dark .section-head p{color:#c3cfdb}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid.two{grid-template-columns:repeat(2,1fr)}.card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:0 12px 40px rgba(16,42,67,.045)}.card p{color:var(--muted);margin:8px 0 0}.kicker{font-size:10px;color:var(--blue);font-weight:900;letter-spacing:.12em;text-transform:uppercase;margin-bottom:11px}.card h3{font-size:21px;line-height:1.2;margin:0}.list{padding:0;margin:16px 0 0;list-style:none}.list li{padding:9px 0;border-top:1px solid var(--line)}.list li:first-child{border-top:0}
.image-split{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center}.image-split.reverse{grid-template-columns:1.1fr .9fr}.image-split img{width:100%;height:470px;object-fit:cover;border-radius:24px;box-shadow:var(--shadow)}.image-split.reverse img{order:2}.numbered{display:grid;gap:20px}.numbered .item{display:grid;grid-template-columns:45px 1fr;gap:12px;padding-top:17px;border-top:1px solid var(--line)}.numbered .num{font-size:12px;font-weight:900;color:var(--blue)}.numbered h3{margin:0 0 5px}.numbered p{margin:0;color:var(--muted)}
.exam-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.exam-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;min-height:150px;transition:.2s}.exam-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfd9e4}.exam-card strong{font-size:19px;display:block;margin-bottom:5px}.exam-card span{font-size:12px;color:var(--muted)}
.page-hero{padding:65px 0 55px;border-bottom:1px solid var(--line);background:linear-gradient(135deg,#f8f9fb,#edf3f8)}h1,h2,h3{line-height:1.15}h2{font-size:clamp(30px,4vw,48px);margin:0 0 18px}.prose{max-width:820px}.prose p,.prose li{color:var(--muted)}.data-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}.data-table th,.data-table td{text-align:left;padding:15px;border-bottom:1px solid var(--line);vertical-align:top}.data-table th{background:#f1f4f7;font-size:13px}.notice{padding:18px 20px;border-left:3px solid var(--blue);background:#eaf4ff;color:#465466;border-radius:0 12px 12px 0}.source{font-size:12px;color:var(--muted);margin-top:20px}
.footer{background:#0b1622;color:#d9e1ea;padding:60px 0 30px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:35px}.footer a{color:#d9e1ea}.footer p{color:#aeb9c6}.footer .list li{border-color:#263442}.footer-bottom{border-top:1px solid #263442;margin-top:40px;padding-top:18px}.footer small{color:#8997a7}.fixed-bar{display:none}
@media(max-width:900px){.navlinks{display:none}.menu{display:block}.nav{min-height:66px}.hero-grid,.image-split,.image-split.reverse{grid-template-columns:1fr;gap:30px}.image-split.reverse img{order:0}.hero-media img{height:540px}.metrics{grid-template-columns:repeat(2,1fr);gap:20px}.grid,.grid.two{grid-template-columns:1fr}.exam-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.section{padding:68px 0}.fixed-bar{position:fixed;display:grid;grid-template-columns:repeat(3,1fr);bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);z-index:60}.fixed-bar a{text-align:center;padding:11px 4px;font-size:11px;font-weight:900;border-right:1px solid var(--line)}body{padding-bottom:56px}}
@media(max-width:560px){.container{width:min(calc(100% - 28px),var(--max))}.hero{padding:30px 0 54px}.hero h1{font-size:43px}.hero-media img{height:500px}.footer-grid{grid-template-columns:1fr}.exam-grid{grid-template-columns:1fr}.data-table{display:block;overflow-x:auto;white-space:nowrap}}

/* V3 information and homework components */
.navlinks a.active{color:var(--blue)}
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);overflow:hidden}.stat-strip>div{padding:24px;border-right:1px solid var(--line)}.stat-strip>div:last-child{border-right:0}.stat-strip strong{display:block;font-size:28px;letter-spacing:-.04em}.stat-strip span{font-size:11px;color:var(--muted)}
.table-wrap{overflow-x:auto;border-radius:18px;box-shadow:0 10px 35px rgba(16,42,67,.04)}.table-wrap .data-table{margin:0;min-width:680px}.info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:18px}.highlight-card{margin-top:18px;border-color:#c8e1fb;background:#f4faff}.big .item{padding:22px 0}.numbered.big{gap:0}.numbered.big .num{font-size:15px}.cta-card{display:flex;justify-content:space-between;align-items:center;gap:30px;padding:42px;background:linear-gradient(135deg,#fff,#eef7ff)}.cta-card h2{margin-bottom:8px}.sat-home-grid{display:grid;grid-template-columns:1.3fr .7fr .7fr;gap:18px}.sat-main-card{background:linear-gradient(135deg,#102a43,#173e5f);color:#fff;border:0}.sat-main-card p{color:#d4e1ed}.sat-main-card .kicker{color:#8fd0ff}.mini-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:24px 0}.mini-stats span{padding:10px 8px;border:1px solid rgba(255,255,255,.15);border-radius:12px;font-size:11px;color:#d8e7f3}.mini-stats b{display:block;font-size:15px;color:#fff}.text-link{display:inline-block;margin-top:18px;color:var(--blue);font-weight:800;font-size:12px}.exam-guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.guide-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;min-height:180px;display:flex;flex-direction:column;transition:.2s}.guide-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.guide-card strong{font-size:24px}.guide-card span{color:var(--muted);font-size:12px;margin-top:6px}.guide-card b{margin-top:auto;font-size:12px;color:var(--blue)}.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;color:#536174}.daily-top{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;margin-bottom:28px}.homework-filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}.filter{border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 14px;font-weight:800;font-size:11px;cursor:pointer}.filter.active{background:var(--navy);color:#fff;border-color:var(--navy)}.homework-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.homework-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;min-height:180px;display:flex;flex-direction:column;transition:.2s}.homework-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cbd9e7}.homework-card .tag{font-size:9px;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);font-weight:900;margin-bottom:10px}.homework-card strong{font-size:17px;line-height:1.25}.homework-card p{font-size:12px;color:var(--muted);margin:7px 0}.homework-card b{margin-top:auto;font-size:11px}.daily-feature{display:grid;grid-template-columns:.75fr 1.25fr;gap:18px;align-items:stretch}.homework-chips{display:flex;align-content:center;align-items:center;flex-wrap:wrap;gap:10px;padding:30px;border-radius:20px;background:#eef2f6;border:1px solid var(--line)}.homework-chips span{background:#fff;border:1px solid var(--line);padding:12px 15px;border-radius:999px;font-size:12px;font-weight:800}
@media(max-width:900px){.stat-strip{grid-template-columns:repeat(2,1fr)}.stat-strip>div:nth-child(2){border-right:0}.stat-strip>div:nth-child(3),.stat-strip>div:nth-child(4){border-top:1px solid var(--line)}.info-grid,.sat-home-grid,.daily-top,.daily-feature{grid-template-columns:1fr}.exam-guide-grid{grid-template-columns:repeat(2,1fr)}.homework-grid{grid-template-columns:repeat(2,1fr)}.cta-card{display:block}.mini-stats{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.stat-strip{grid-template-columns:1fr 1fr}.stat-strip strong{font-size:22px}.exam-guide-grid,.homework-grid{grid-template-columns:1fr}.check-grid{grid-template-columns:1fr}.mini-stats{grid-template-columns:1fr 1fr}.daily-top{gap:12px}}