:root{--bg:#f7f8fb;--text:#13161c;--muted:#68707d;--card:#fff;--line:#e7e9ef;--accent:#5b5cf0;--accent-dark:#4748da;--green:#117a53;--red:#b33a3a;--shadow:0 14px 38px rgba(20,24,35,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:var(--bg)}a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}.container{width:min(1160px,calc(100% - 36px));margin:0 auto}.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.nav{height:74px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{font-size:23px;font-weight:800;letter-spacing:-.7px}.brand span{color:var(--accent)}.nav-links{display:flex;gap:28px;font-size:14px;font-weight:600;color:#555d6a}.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:12px;padding:13px 18px;font-weight:700;cursor:pointer;transition:.18s ease}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--accent);color:#fff}.btn-dark{background:#171a21;color:#fff}.btn-ghost{background:#fff;border:1px solid var(--line)}.btn-danger{background:#fff0f0;color:var(--red);border:1px solid #f1cccc}.btn.small{padding:9px 12px;font-size:12px}.full{width:100%}.hero{padding:78px 0 58px;background:radial-gradient(circle at 90% 10%,#ecebff 0,transparent 35%),linear-gradient(180deg,#fff,#f7f8fb)}.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:72px;align-items:center}.eyebrow{font-size:12px;font-weight:800;letter-spacing:1.7px;color:var(--accent);margin-bottom:16px}h1{font-size:68px;line-height:1.02;letter-spacing:-3.6px;margin:0 0 22px;max-width:760px}h1 span{color:var(--accent)}.hero-copy{font-size:19px;line-height:1.65;color:#565e6b;max-width:650px;margin:0 0 28px}.hero-actions{display:flex;gap:12px}.hero-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:var(--shadow);position:relative;min-height:330px}.mini-badge{position:absolute;right:20px;top:-12px;background:#171a21;color:#fff;border-radius:20px;padding:7px 11px;font-size:11px;font-weight:800}.featured-pay{font-size:30px;font-weight:800;color:var(--green)}.featured-meta,.study-meta{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}.pill{padding:7px 9px;background:#f5f6f9;border-radius:999px;font-size:11px;font-weight:700;color:#646d7a}.stats-strip{background:#171a21;color:#fff;padding:26px 0}.stats{display:grid;grid-template-columns:repeat(4,1fr)}.stats>div{display:flex;flex-direction:column;text-align:center;border-right:1px solid #343843}.stats>div:last-child{border:0}.stats strong{font-size:21px}.stats span{font-size:12px;color:#abb1bd;margin-top:4px}.section{padding:80px 0}.section-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:28px}.section-heading h2{font-size:38px;letter-spacing:-1.6px;margin:0}.results-count{font-size:13px;color:var(--muted);font-weight:700}.toolbar{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:10px;margin-bottom:25px}.toolbar input,.toolbar select,.newsletter input,.stack-form input,.editor-grid input,.editor-grid select,.editor-grid textarea,.compact-input{width:100%;border:1px solid var(--line);background:#fff;border-radius:12px;padding:14px 15px;outline:none;color:var(--text)}textarea{resize:vertical}.toolbar input:focus,.toolbar select:focus,.newsletter input:focus,.stack-form input:focus,.editor-grid input:focus,.editor-grid select:focus,.editor-grid textarea:focus{border-color:#b6b6ff;box-shadow:0 0 0 4px rgba(91,92,240,.08)}.ad-slot{min-height:112px;border:1px dashed #cdd1d9;border-radius:16px;background:#fbfbfc;margin:0 0 28px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#969ca6;gap:5px}.ad-slot span{font-size:9px;letter-spacing:1.4px}.study-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.study-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:21px;display:flex;flex-direction:column;min-height:350px}.study-card-top{display:flex;justify-content:space-between;gap:10px}.source{font-size:11px;font-weight:800;color:#727a86}.study-pay{font-size:25px;font-weight:800;color:var(--green)}.study-card h3{font-size:19px;line-height:1.35;margin:18px 0 8px}.study-card p{font-size:13.5px;line-height:1.6;color:var(--muted);margin:0 0 17px}.study-bottom{margin-top:auto}.rate{display:flex;justify-content:space-between;margin-bottom:12px;font-size:12px;color:#737b88}.rate strong{color:#3d4550}.disclosure{font-size:9.5px!important;color:#a0a5ae!important;margin:9px 0 0!important;text-align:center}.newsletter{padding-top:30px}.newsletter-card{background:#171a21;color:#fff;border-radius:26px;padding:42px 48px;display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}.newsletter h2{font-size:36px;margin:0 0 8px}.newsletter p{color:#b4bac4}.newsletter form{display:grid;grid-template-columns:1fr auto;gap:9px}.form-message{font-size:12px;color:var(--muted);margin:6px 0 0}.newsletter .form-message{grid-column:1/-1;color:#c5cad2}footer{background:#0f1116;color:#e9ebef;padding:48px 0 30px}.legal{color:#7f8794;font-size:10.5px;line-height:1.6}.quiet-link{color:#8d95a1;text-decoration:underline}.hidden{display:none!important}.empty-state{text-align:center;background:#fff;border:1px solid var(--line);border-radius:18px;padding:50px}.skeleton{background:linear-gradient(90deg,#f1f2f5,#e7e9ee,#f1f2f5);background-size:200% 100%;animation:pulse 1.5s infinite;border-radius:12px}.skeleton.tall{height:240px}@keyframes pulse{to{background-position:-200% 0}}.toast{position:fixed;right:24px;bottom:24px;background:#171a21;color:white;border-radius:12px;padding:14px 18px;box-shadow:var(--shadow);z-index:50}

/* admin */
.admin-body{background:#eef0f5}.admin-shell{width:min(1400px,calc(100% - 30px));margin:0 auto;padding:34px 0 70px}.auth-card{width:min(460px,100%);margin:8vh auto 0;background:#fff;border:1px solid var(--line);border-radius:24px;padding:34px;box-shadow:var(--shadow)}.auth-card .brand{display:block;margin-bottom:38px}.admin-login-title{font-size:40px;letter-spacing:-1.8px;margin:0 0 8px}.muted{color:var(--muted)}.stack-form{display:grid;gap:16px;margin:25px 0}.stack-form label,.editor-grid label{font-size:12px;font-weight:700;color:#535b68;display:grid;gap:7px}.admin-topbar{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:24px}.admin-actions{display:flex;gap:8px}.admin-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:18px}.metric{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}.metric span{display:block;font-size:11px;color:var(--muted);font-weight:700;text-transform:uppercase}.metric strong{font-size:30px}.admin-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(460px,.85fr);gap:18px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px}.panel-header{display:flex;justify-content:space-between;gap:14px;align-items:flex-start;margin-bottom:20px}.panel-header h2{margin:0;font-size:24px}.compact-input{max-width:190px;padding:10px 12px}.editor-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.span-2{grid-column:1/-1}.check-row{display:flex!important;align-items:center;gap:9px!important}.check-row input{width:auto}.editor-actions{display:flex;gap:10px}.admin-list{display:grid;gap:10px;max-height:950px;overflow:auto}.admin-item{border:1px solid var(--line);border-radius:14px;padding:15px}.admin-item-top{display:flex;justify-content:space-between;gap:12px}.admin-item h3{font-size:15px;margin:0 0 5px}.admin-item .small-meta{font-size:11px;color:var(--muted)}.admin-item-actions{display:flex;gap:7px;margin-top:12px}.status{font-size:10px;font-weight:800;text-transform:uppercase;border-radius:999px;padding:5px 8px;background:#f2f3f6}.status.active{background:#e9f7f0;color:#117a53}.status.draft{background:#fff5d8;color:#816300}.status.expired{background:#ffeded;color:#a83434}

@media(max-width:1000px){.study-grid{grid-template-columns:repeat(2,1fr)}.hero-grid{grid-template-columns:1fr;gap:35px}.admin-grid{grid-template-columns:1fr}.admin-list{max-height:none}.toolbar{grid-template-columns:1fr 1fr}.toolbar input{grid-column:1/-1}.newsletter-card{grid-template-columns:1fr}.admin-stats{grid-template-columns:repeat(2,1fr)}}
@media(max-width:650px){.nav-links{display:none}.container{width:min(100% - 24px,1160px)}h1{font-size:45px;letter-spacing:-2.5px}.hero{padding-top:52px}.hero-actions{flex-direction:column}.study-grid{grid-template-columns:1fr}.toolbar{grid-template-columns:1fr}.toolbar input{grid-column:auto}.section{padding:58px 0}.section-heading{align-items:flex-start;flex-direction:column;gap:12px}.stats{grid-template-columns:repeat(2,1fr);gap:20px}.stats>div:nth-child(2){border:0}.newsletter-card{padding:30px 22px}.newsletter form{grid-template-columns:1fr}.admin-shell{width:min(100% - 18px,1400px);padding-top:18px}.admin-topbar{flex-direction:column;gap:16px}.admin-stats{grid-template-columns:1fr 1fr}.panel{padding:17px}.editor-grid{grid-template-columns:1fr}.span-2{grid-column:auto}.panel-header{flex-direction:column}.compact-input{max-width:none}}

.mfa-qr-wrap{display:flex;justify-content:center;background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;margin:22px 0}
.mfa-qr{width:min(260px,80vw);height:auto;display:block}
.setup-key-box{border:1px solid var(--line);border-radius:14px;padding:13px 15px;margin-bottom:20px;background:#fafbfc}
.setup-key-box summary{cursor:pointer;font-weight:700;font-size:13px}
.secret-code{display:block;margin-top:10px;padding:12px;background:#171a21;color:#fff;border-radius:10px;font-size:12px;word-break:break-all;user-select:all}
.security-panel{margin-top:18px}
.security-badge{background:#e9f7f0;color:#117a53;border-radius:999px;padding:7px 10px;font-size:11px;font-weight:800}
.factor-list{display:grid;gap:10px;margin:18px 0}
.factor-item{display:flex;align-items:center;justify-content:space-between;gap:16px;border:1px solid var(--line);border-radius:13px;padding:14px}
.factor-item strong{display:block;font-size:13px}
.factor-item span{display:block;font-size:11px;color:var(--muted);margin-top:3px}