:root{
  --bg:#ffffff; --bg2:#f5f7fb; --card:#ffffff; --line:#e5e9f2;
  --blue:#2563eb; --blue2:#1d4ed8; --accent:#0ea5e9; --ink:#0f172a; --muted:#64748b;
  --sans:'Plus Jakarta Sans',system-ui,sans-serif;
  --r:16px; --shadow:0 8px 30px rgba(15,23,42,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.7;font-size:17px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1140px;margin:0 auto;padding:0 22px}

.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:70px;max-width:1140px;margin:0 auto;padding:0 22px}
.logo{font-size:1.4rem;font-weight:800;display:flex;align-items:center;gap:9px;color:var(--ink)}
.logo span{color:var(--blue)}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{color:var(--muted);font-size:.95rem;font-weight:600;transition:.2s}
.nav-links a:hover{color:var(--blue)}
.burger{display:none;background:none;border:0;font-size:1.6rem;cursor:pointer;color:var(--ink)}

.hero{padding:90px 0 60px;text-align:center;background:linear-gradient(180deg,#eff4ff,#fff)}
.eyebrow{color:var(--blue);letter-spacing:2px;text-transform:uppercase;font-size:.8rem;font-weight:700;margin-bottom:16px}
.hero h1{font-size:3.2rem;line-height:1.1;font-weight:800;margin-bottom:20px;letter-spacing:-1px}
.hero h1 em{color:var(--blue);font-style:normal}
.hero p{max-width:620px;margin:0 auto 30px;color:var(--muted);font-size:1.15rem}
.btn{display:inline-block;background:var(--blue);color:#fff;padding:14px 30px;border-radius:12px;font-weight:700;transition:.25s;border:0;cursor:pointer;font-size:1rem}
.btn:hover{background:var(--blue2);transform:translateY(-2px);box-shadow:0 10px 24px rgba(37,99,235,.3)}
.btn-ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue);background:#fff}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

.sec{padding:64px 0}
.sec.alt{background:var(--bg2)}
.sec-head{text-align:center;max-width:640px;margin:0 auto 44px}
.sec-head h2{font-size:2.2rem;font-weight:800;margin-bottom:14px}
.sec-head p{color:var(--muted);font-size:1.05rem}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px;transition:.25s}
.card:hover{border-color:var(--blue);transform:translateY(-4px);box-shadow:var(--shadow)}
.card .ico{width:52px;height:52px;border-radius:12px;background:#eff4ff;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:16px}
.card h3{font-size:1.25rem;margin-bottom:9px;font-weight:700}
.card p{color:var(--muted);font-size:.96rem;margin-bottom:14px}
.card .link{color:var(--blue);font-weight:700;font-size:.9rem}

.tool{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:32px;margin:28px 0;box-shadow:var(--shadow)}
.tool h2{font-size:1.6rem;margin-bottom:8px}
.field{margin:16px 0}
.field label{display:block;font-size:.88rem;color:var(--ink);margin-bottom:7px;font-weight:700}
.field input,.field select{width:100%;background:#fff;border:1.5px solid var(--line);border-radius:10px;padding:13px 15px;color:var(--ink);font-size:1rem;font-family:inherit}
.field input:focus,.field select:focus{outline:none;border-color:var(--blue)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
.result{margin-top:22px;padding:26px;background:linear-gradient(135deg,#eff4ff,#f0f9ff);border:1px solid #dbeafe;border-radius:12px;text-align:center}
.result .big{font-size:2.6rem;color:var(--blue);font-weight:800;margin:4px 0}
.result .lbl{color:var(--muted);font-size:.85rem;text-transform:uppercase;letter-spacing:1.5px;font-weight:700}
.result small{color:var(--muted);display:block;margin-top:8px}
.gpa-rows{margin:14px 0}
.gpa-row{display:grid;grid-template-columns:2fr 1fr 1fr auto;gap:10px;margin-bottom:10px;align-items:center}
.gpa-row button{background:#fee2e2;color:#dc2626;border:0;border-radius:8px;padding:10px;cursor:pointer;font-weight:700}
.addbtn{background:#eff4ff;color:var(--blue);border:1px dashed var(--blue);border-radius:10px;padding:12px;width:100%;cursor:pointer;font-weight:700;font-family:inherit}

.ad-band{margin:32px 0;text-align:center}
.ad-label{font-size:.68rem;color:var(--muted);letter-spacing:2px;text-transform:uppercase;margin-bottom:6px;opacity:.6}
.ad-band:has(.ad-box:empty){display:none}

.article{max-width:740px;margin:0 auto;padding:44px 0}
.article h1{font-size:2.5rem;line-height:1.15;margin-bottom:14px}
.article .meta{color:var(--muted);font-size:.9rem;margin-bottom:32px}
.article h2{font-size:1.6rem;margin:34px 0 12px}
.article h3{font-size:1.2rem;margin:24px 0 9px;color:var(--blue)}
.article p{margin-bottom:16px;color:#334155}
.article ul,.article ol{margin:0 0 16px 22px;color:#334155}
.article li{margin-bottom:7px}
.article blockquote{border-left:4px solid var(--blue);padding-left:18px;margin:20px 0;color:var(--muted);font-style:italic}
.callout{background:#eff4ff;border:1px solid #dbeafe;border-radius:12px;padding:20px;margin:22px 0}

.footer{border-top:1px solid var(--line);margin-top:50px;padding:46px 0 28px;background:var(--bg2)}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px;margin-bottom:32px}
.foot-grid h4{margin-bottom:13px;font-size:1rem}
.foot-grid a{display:block;color:var(--muted);font-size:.92rem;margin-bottom:8px}
.foot-grid a:hover{color:var(--blue)}
.foot-bottom{border-top:1px solid var(--line);padding-top:22px;text-align:center;color:var(--muted);font-size:.86rem}
.foot-desc{color:var(--muted);font-size:.94rem;max-width:320px}
.tag{display:inline-block;background:#eff4ff;color:var(--blue);padding:5px 13px;border-radius:20px;font-size:.78rem;font-weight:700;margin-bottom:14px}
.breadcrumb{color:var(--muted);font-size:.85rem;margin:22px 0}
.breadcrumb a:hover{color:var(--blue)}

@media(max-width:820px){
  .nav-links{display:none}
  .nav-links.open{display:flex;position:absolute;top:70px;left:0;right:0;flex-direction:column;background:#fff;padding:20px;gap:16px;border-bottom:1px solid var(--line)}
  .burger{display:block}
  .hero h1{font-size:2.2rem}
  .foot-grid{grid-template-columns:1fr 1fr}
  .row,.row3{grid-template-columns:1fr}
  .article h1{font-size:1.9rem}
}

/* ICON-UPGRADE */
.ico{width:56px;height:56px;border-radius:14px;background:#eff4ff;display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:0}
.ico svg{width:28px;height:28px;color:#2563eb;stroke:#2563eb}
.logo-mark{width:30px;height:30px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;background:#eff4ff}
.logo-mark svg{width:20px;height:20px;color:#2563eb;stroke:#2563eb}
.logo{gap:10px}
.burger svg{width:26px;height:26px;display:block}
.foot-grid .logo-mark{width:26px;height:26px}
.foot-grid .logo-mark svg{width:17px;height:17px}