:root{
--primary:#2563eb;--primary-dark:#1d4ed8;--dark:#0f172a;--text:#334155;--muted:#64748b;
--bg:#f8fafc;--surface:#fff;--border:#e2e8f0;--soft:#eff6ff;--danger:#dc2626;
--shadow:0 12px 35px rgba(15,23,42,.08);--radius:18px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}body.dark{--bg:#0b1220;--surface:#111827;--text:#dbe4f0;--muted:#94a3b8;--border:#263449;--soft:#172554;--dark:#f8fafc;--shadow:0 12px 35px rgba(0,0,0,.22)}
a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}.container{width:min(1120px,calc(100% - 32px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.nav-wrap{height:72px;display:flex;align-items:center;gap:28px}.brand{font-size:1.55rem;font-weight:850;letter-spacing:-.04em;color:var(--dark)}.desktop-nav{display:flex;gap:24px;margin-left:auto}.desktop-nav a,.mobile-nav a{font-size:.94rem;color:var(--muted);font-weight:600}.desktop-nav a:hover,.desktop-nav a.active{color:var(--primary)}.header-actions{display:flex;align-items:center;gap:7px}.icon-btn{border:1px solid transparent;background:transparent;color:var(--text);width:40px;height:40px;border-radius:11px;display:grid;place-items:center;font-size:1.25rem}.icon-btn:hover{background:var(--soft);color:var(--primary)}.mobile-menu-btn{display:none}.mobile-nav{display:none;padding:0 16px 16px;flex-direction:column;gap:4px}.mobile-nav a{padding:10px 12px;border-radius:10px}.mobile-nav a:hover{background:var(--soft)}
.search-overlay{position:fixed;inset:0;background:rgba(15,23,42,.5);display:none;align-items:flex-start;justify-content:center;padding:90px 16px 20px;z-index:100}.search-overlay.open{display:flex}.search-panel{width:min(680px,100%);background:var(--surface);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}.search-row{display:flex;align-items:center;gap:10px;padding:12px 14px;border-bottom:1px solid var(--border)}.search-row>span{font-size:1.3rem}.search-row input{width:100%;border:0;outline:0;background:transparent;color:var(--text);font-size:1.05rem}.search-results{max-height:55vh;overflow:auto}.search-result{display:block;padding:14px 18px;border-bottom:1px solid var(--border)}.search-result:hover{background:var(--soft)}.search-result strong{display:block}.search-result small{color:var(--muted)}.search-empty{padding:20px;color:var(--muted)}
.hero{padding:86px 0 70px;background:linear-gradient(180deg,var(--surface),var(--bg))}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:60px}.eyebrow{display:inline-block;color:var(--primary);font-size:.76rem;letter-spacing:.14em;font-weight:800}.hero h1{font-size:clamp(2.6rem,6vw,4.6rem);line-height:1.02;letter-spacing:-.055em;color:var(--dark);margin:14px 0 22px}.hero h1 span{color:var(--primary)}.hero-copy>p{max-width:620px;font-size:1.12rem;color:var(--muted);margin-bottom:30px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:0;border-radius:12px;padding:12px 18px;font-weight:750;transition:.2s}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 18px rgba(37,99,235,.2)}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}.btn-secondary{background:var(--soft);color:var(--primary)}.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border)}.btn-ghost:hover{background:var(--soft)}
.student-art{min-height:390px}.campus-card{height:390px;position:relative;overflow:hidden;border:1px solid var(--border);border-radius:28px;background:linear-gradient(160deg,#dbeafe,#eef2ff 48%,#f8fafc);box-shadow:var(--shadow)}body.dark .campus-card{background:linear-gradient(160deg,#172554,#111827)}.sun{position:absolute;width:100px;height:100px;border-radius:50%;background:#fbbf24;right:48px;top:35px;opacity:.75}.building{position:absolute;bottom:112px;left:55px;right:55px;height:130px;border-radius:12px 12px 0 0;background:#cbd5e1;padding:18px;display:grid;grid-template-columns:repeat(6,1fr);gap:10px}.building i{background:#93c5fd;border-radius:3px}.ground{position:absolute;bottom:0;left:0;right:0;height:115px;background:#dbeafe}.student{position:absolute;bottom:80px;z-index:3}.student-male{left:24%;width:105px;height:210px}.student-female{right:22%;width:112px;height:225px}.head{position:absolute;width:58px;height:66px;border-radius:45% 45% 48% 48%;background:#c58b62;left:25px;top:36px}.student-female .head{background:#9b6847}.body{position:absolute;left:13px;top:98px;width:80px;height:105px;border-radius:30px 30px 8px 8px;background:#1e3a8a}.student-female .body{background:#7c3aed}.arm{position:absolute;width:24px;height:86px;border-radius:20px;background:#c58b62;left:0;top:110px;transform:rotate(15deg)}.student-female .arm{background:#9b6847;left:87px;transform:rotate(-18deg)}.cap{position:absolute;z-index:5;left:14px;top:10px;width:82px;height:16px;background:#111827;transform:skewX(-15deg);border-radius:2px}.cap:after{content:"";position:absolute;width:9px;height:26px;background:#111827;right:7px;top:7px;transform:rotate(22deg)}.hair{position:absolute;width:68px;height:78px;background:#3f2a20;border-radius:48% 48% 40% 40%;left:20px;top:28px}.student-female .head{z-index:2}.student-female .cap{z-index:5}.student-female .body{z-index:1}
.ad-slot{min-height:92px;border:1px dashed var(--border);border-radius:14px;display:grid;place-items:center;color:var(--muted);font-size:.76rem;letter-spacing:.08em;text-transform:uppercase;margin-top:22px;margin-bottom:18px}.section{padding:78px 0}.soft-section{background:var(--soft)}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:30px}.section-heading h2,.two-col h2{font-size:clamp(1.8rem,3vw,2.5rem);line-height:1.1;letter-spacing:-.035em;color:var(--dark);margin:8px 0 0}.section-heading>p{max-width:390px;color:var(--muted)}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.tool-card,.calc-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 5px 20px rgba(15,23,42,.04)}.tool-card{padding:24px;transition:.2s}.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.tool-icon{width:48px;height:48px;border-radius:14px;background:var(--soft);color:var(--primary);display:grid;place-items:center;font-weight:850;margin-bottom:18px}.tool-card h3{color:var(--dark);margin:0 0 8px}.tool-card p{color:var(--muted);margin:0 0 18px;min-height:76px}.tool-card a{color:var(--primary);font-weight:750}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}.two-col p{color:var(--muted)}.feature-list{display:grid;gap:12px}.feature-list div{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;display:flex;flex-direction:column}.feature-list strong{color:var(--dark)}.feature-list span{color:var(--muted);font-size:.94rem}.faq{display:grid;gap:10px}.faq details{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:17px 18px}.faq summary{cursor:pointer;font-weight:750;color:var(--dark)}.faq p{color:var(--muted);margin-bottom:0}
.tool-hero{padding:68px 0 42px;background:linear-gradient(180deg,var(--surface),var(--bg))}.tool-hero h1{font-size:clamp(2.2rem,5vw,3.6rem);line-height:1.05;letter-spacing:-.05em;color:var(--dark);margin:12px 0}.tool-hero p{max-width:700px;color:var(--muted);font-size:1.05rem}.calculator-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.calc-card{padding:24px}.calc-card h2{color:var(--dark);font-size:1.15rem;margin-top:0}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:16px}.form-grid.three{grid-template-columns:repeat(3,1fr)}label,.form-group{display:flex;flex-direction:column;gap:7px;font-weight:700;color:var(--dark);margin-bottom:15px}input,select,textarea{width:100%;max-width:100%;box-sizing:border-box;border:1px solid var(--border);border-radius:11px;background:var(--surface);color:var(--text);padding:12px 13px;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.12)}textarea{resize:vertical}.result,.conversion-result{display:block;margin-top:15px;padding:13px;border-radius:11px;background:var(--soft);color:var(--primary);font-weight:800;min-height:48px}.narrow{width:min(760px,calc(100% - 32px))}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}.stats-grid div{border:1px solid var(--border);border-radius:14px;padding:16px;background:var(--surface)}.stats-grid span{display:block;color:var(--muted);font-size:.8rem}.stats-grid strong{display:block;color:var(--dark);font-size:1.2rem;margin-top:3px}.stats-grid .wide{grid-column:1/-1}.hidden{display:none!important}.error{color:var(--danger);display:block;margin-top:10px}.toolbar{display:flex;align-items:end;gap:10px;margin-bottom:18px;flex-wrap:wrap}.toolbar label{margin:0}.toolbar select{min-width:120px}.table-wrap{overflow:auto}.data-table{width:100%;border-collapse:collapse;min-width:650px}.data-table th,.data-table td{text-align:left;padding:11px;border-bottom:1px solid var(--border)}.data-table th{color:var(--muted);font-size:.82rem}.data-table input,.data-table select{margin:0}.remove-btn{border:0;background:transparent;color:var(--danger);font-weight:800}.gpa-result{margin-top:20px;padding:22px;border-radius:16px;background:var(--soft);display:flex;align-items:center;gap:18px;flex-wrap:wrap}.gpa-result span{color:var(--muted)}.gpa-result strong{font-size:2.2rem;color:var(--primary)}.gpa-result small{color:var(--muted)}.custom-scale{padding:14px;background:var(--bg);border-radius:12px;margin-bottom:16px}.grade-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.grade-grid label{margin:0;font-size:.82rem}.scientific{width:min(520px,100%);margin:auto;background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:18px;box-shadow:var(--shadow)}.calc-display{background:#0f172a;color:#fff;border-radius:14px;padding:12px;margin-bottom:10px}.calc-display div{min-height:22px;color:#94a3b8;text-align:right;font-size:.8rem}.calc-display input{border:0;background:transparent;color:#fff;text-align:right;font-size:1.8rem;padding:5px 0;box-shadow:none}.calc-toolbar{display:flex;justify-content:space-between;gap:8px;margin-bottom:10px}.mode-btn{border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:9px;padding:7px 10px}.calc-buttons{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.calc-buttons button{border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:11px;min-height:48px;font-weight:750}.calc-buttons button:hover{background:var(--soft);color:var(--primary)}.calc-buttons .equals{background:var(--primary);color:#fff;border-color:var(--primary)}.calc-buttons .danger{color:var(--danger)}.span-two{grid-column:span 2}.history-box{margin-top:18px;border-top:1px solid var(--border);padding-top:12px}.history-box h3{margin:0 0 8px;color:var(--dark)}.history-item{padding:7px 0;border-bottom:1px solid var(--border);font-size:.88rem}.history-item span{color:var(--muted)}.editor{min-height:300px}.editor-actions{display:flex;gap:8px;margin:12px 0 20px}.content-page{max-width:800px}.content-page h2{color:var(--dark);margin-top:30px}.content-page p,.content-page li{color:var(--muted)}.contact-card form{width:100%}.form-status{color:var(--primary);font-weight:700}.site-footer{background:#0f172a;color:#cbd5e1;padding:56px 0 0}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}.footer-brand{color:#fff}.site-footer p{color:#94a3b8}.site-footer h3{font-size:.9rem;color:#fff}.site-footer a:not(.brand){display:block;color:#94a3b8;margin:8px 0}.site-footer a:hover{color:#fff}.footer-bottom{border-top:1px solid #263449;margin-top:40px;padding:18px 0;color:#64748b;font-size:.85rem}
@media(max-width:900px){.desktop-nav{display:none}.mobile-menu-btn{display:grid}.mobile-nav.open{display:flex}.hero-grid,.two-col{grid-template-columns:1fr}.student-art{min-height:330px}.campus-card{height:330px}.tool-grid{grid-template-columns:1fr 1fr}.calculator-grid{grid-template-columns:1fr}.section-heading{align-items:start;flex-direction:column}.form-grid.three{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.container{width:min(100% - 24px,1120px)}.nav-wrap{height:64px}.hero{padding:58px 0 40px}.hero h1{font-size:2.65rem}.hero-copy>p{font-size:1rem}.student-art{min-height:280px}.campus-card{height:280px}.student-male{left:18%;transform:scale(.82);transform-origin:bottom}.student-female{right:13%;transform:scale(.82);transform-origin:bottom}.building{left:25px;right:25px;height:105px;bottom:75px}.ground{height:80px}.section{padding:54px 0}.tool-grid,.form-grid,.form-grid.three,.stats-grid{grid-template-columns:1fr}.tool-card p{min-height:auto}.stats-grid .wide{grid-column:auto}.footer-grid{grid-template-columns:1fr}.search-overlay{padding-top:75px}.grade-grid{grid-template-columns:repeat(2,1fr)}.toolbar{align-items:stretch}.toolbar .btn{flex:1}.calculator-grid{gap:14px}.calc-card{padding:18px}}