:root{color:#172033;background:#f6f8fc;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0}a{color:inherit;text-decoration:none}button{color:#fff;cursor:pointer;background:#2457ff;border:0;border-radius:999px;padding:12px 22px;font-weight:700;box-shadow:0 10px 24px #2457ff40}.hero{background:radial-gradient(circle at 75% 25%,#dbe6ff,#0000 34%),linear-gradient(135deg,#fff 0%,#eef3ff 52%,#f9fbff 100%);min-height:680px;padding:28px 7vw 70px}nav{justify-content:space-between;align-items:center;gap:24px;display:flex}.brand{color:#173079;align-items:center;gap:10px;font-size:22px;font-weight:900;display:flex}.links{color:#59647a;gap:24px;display:flex}nav button{align-items:center;gap:7px;display:flex}.heroGrid{grid-template-columns:1.2fr .8fr;align-items:center;gap:52px;margin-top:88px;display:grid}.eyebrow{color:#2457ff;background:#fff;border-radius:999px;align-items:center;gap:8px;padding:9px 14px;font-weight:800;display:inline-flex}.hero h1{color:#10182c;letter-spacing:-2px;margin:22px 0;font-size:58px;line-height:1.08}.sub{color:#5c667a;max-width:720px;font-size:19px;line-height:1.8}.actions,.buttonRow{flex-wrap:wrap;gap:16px;margin-top:22px;display:flex}.ghost{color:#2457ff;background:#fff;box-shadow:inset 0 0 0 1px #d8e1ff}.stats{flex-wrap:wrap;gap:18px;margin-top:34px;display:flex}.stats span{color:#667085;background:#fff;border:1px solid #e6ebf5;border-radius:18px;padding:14px 18px}.stats b{color:#10182c;font-size:22px;display:block}.scoreCard,.feature,.panel,.workbench,.library,.pricing,.orderPanel,.payGuide{background:#ffffffdb;border:1px solid #e6ebf5;border-radius:30px;box-shadow:0 24px 60px #1f2d5614}.toast{z-index:30;color:#fff;cursor:pointer;background:#172033;border-radius:999px;padding:13px 20px;position:fixed;top:22px;left:50%;transform:translate(-50%);box-shadow:0 18px 42px #1720333d}.modalMask{z-index:40;background:#0f172a6b;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.loginModal{background:#fff;border-radius:28px;width:min(420px,100%);padding:30px;position:relative;box-shadow:0 30px 90px #0f172a47}.loginModal p{color:#667085;line-height:1.7}.loginModal input{width:100%;font:inherit;border:1px solid #dbe3f2;border-radius:16px;margin:8px 0;padding:14px 16px}.close{color:#2457ff;box-shadow:none;background:#eef3ff;padding:8px;position:absolute;top:18px;right:18px}.scoreCard{padding:34px}.cardTop{justify-content:space-between;align-items:end;display:flex}.cardTop strong{color:#2457ff;font-size:76px}.bar{background:#e8eefc;border-radius:20px;height:12px;margin:20px 0;overflow:hidden}.bar i{background:linear-gradient(90deg,#2457ff,#21c7a8);border-radius:20px;height:100%;display:block}.scoreCard li{color:#3b465c;gap:10px;margin:16px 0;list-style:none;display:flex}.features{grid-template-columns:repeat(4,1fr);gap:20px;margin-top:-54px;padding:0 7vw;display:grid}.feature{padding:28px}.feature svg{color:#2457ff}.feature h3{margin-bottom:8px}.feature p,.questionGrid p,.report p,.advice p,.modelAnswer p{color:#667085;line-height:1.7}.panel,.workbench,.library,.pricing{margin:48px 7vw;padding:36px}.sectionTitle{align-items:center;gap:14px;margin-bottom:24px;display:flex}.sectionTitle span{color:#2457ff;background:#eef3ff;border-radius:999px;padding:8px 13px;font-weight:900}.sectionTitle h2{margin:0;font-size:32px}.questionGrid{grid-template-columns:repeat(4,1fr);gap:18px;display:grid}.questionGrid article{background:#f8faff;border:1px solid #e8eefc;border-radius:22px;padding:24px;position:relative}.questionGrid em{color:#9b5b00;background:#fff1d6;border-radius:999px;padding:5px 10px;font-size:12px;font-style:normal;font-weight:800;position:absolute;top:18px;right:18px}.questionGrid b{color:#2457ff}.questionGrid h3{min-height:64px}.questionGrid p{align-items:center;gap:6px;display:flex}.editor{grid-template-columns:1fr 390px;gap:26px;display:grid}.form{gap:12px;display:grid}.form label{color:#24304a;font-weight:800}.uploadBox{color:#2457ff;cursor:pointer;background:#f5f8ff;border:1px dashed #9eb3ff;border-radius:20px;align-items:center;gap:12px;padding:18px;display:flex}.uploadBox span{color:#667085;font-size:14px}.uploadBox input{display:none}.form select,.form textarea,.adminGrid input,.adminGrid select,.adminGrid textarea{width:100%;font:inherit;background:#fbfcff;border:1px solid #dbe3f2;border-radius:18px;outline:none;padding:15px}.form textarea{resize:vertical;min-height:120px}.form .answer{min-height:210px}.form button{align-items:center;gap:8px;display:flex}.report{color:#fff;background:linear-gradient(#172033,#26385f);border-radius:24px;padding:28px}.report p{color:#dce5ff}.bigScore{color:#7df0cf;font-size:72px;font-weight:900}.bigScore small{color:#b8c5e7;font-size:22px}.rubric{gap:10px;margin-top:18px;display:grid}.rubric div{background:#ffffff17;border-radius:16px;padding:13px}.rubric b{justify-content:space-between;display:flex}.rubric i{color:#7df0cf;font-style:normal}.rubric span{color:#cbd6f0;font-size:14px}.detailPanel{background:linear-gradient(135deg,#fff,#f5f8ff)}.detailGrid{grid-template-columns:1fr 1fr 1.2fr;gap:18px;display:grid}.advice,.modelAnswer,.topic,.priceGrid article,.historyGrid article,.adminGrid,.adminList article,.guideGrid article{background:#f8faff;border:1px solid #e8eefc;border-radius:24px;padding:24px}.advice h3,.modelAnswer h3{margin-top:0}.advice p{align-items:flex-start;gap:8px;display:flex}.advice svg{color:#2457ff;flex:none;margin-top:4px}.historyGrid{grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.historyGrid article{align-items:center;gap:14px;display:flex}.adminGrid{grid-template-columns:180px 1fr 140px;gap:14px;display:grid}.adminGrid textarea{grid-column:1/-1;min-height:120px}.adminGrid button{justify-self:start;align-items:center;gap:8px;display:flex}.adminList{gap:12px;margin-top:18px;display:grid}.adminList article{justify-content:space-between;align-items:center;gap:14px;display:flex}.adminList button,.historyGrid button{box-shadow:none;background:#ef4444;align-items:center;gap:6px;padding:9px 14px;display:flex}.historyGrid button{background:#2457ff}.historyGrid svg{color:#2457ff}.historyGrid div{flex:1;gap:5px;display:grid}.historyGrid span{color:#667085}.historyGrid strong{color:#2457ff;font-size:24px}.guideGrid{grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.guideGrid p{color:#667085;line-height:1.7}.libraryGrid{grid-template-columns:repeat(6,1fr);gap:16px;display:grid}.topic{gap:8px;display:grid}.topic svg{color:#2457ff}.topic span{color:#667085;font-size:13px}.priceGrid{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}.priceGrid article{position:relative}.priceGrid .hot{color:#fff;background:#172033;transform:translateY(-8px);box-shadow:0 24px 60px #17203338}.price{margin:14px 0;font-size:54px;font-weight:900}.price small,.price span{color:#8b96ad;font-size:16px}.hot .price small,.hot .price span,.hot p{color:#dce5ff}.priceGrid p{color:#59647a;align-items:center;gap:8px;display:flex}.priceGrid svg{color:#21c7a8}@media (width<=1100px){.libraryGrid{grid-template-columns:repeat(3,1fr)}.detailGrid{grid-template-columns:1fr}.priceGrid{grid-template-columns:1fr 1fr}.historyGrid,.adminGrid,.guideGrid{grid-template-columns:1fr}}@media (width<=900px){.heroGrid,.editor{grid-template-columns:1fr}.features,.questionGrid{grid-template-columns:1fr 1fr}.hero h1{font-size:42px}.links{display:none}}@media (width<=560px){.features,.questionGrid,.libraryGrid,.priceGrid,.historyGrid,.adminGrid,.guideGrid{grid-template-columns:1fr}nav button{display:none}.hero{padding:22px 18px}.panel,.workbench,.library,.pricing{margin:28px 18px;padding:22px}.hero h1{font-size:36px}.cardTop strong{font-size:58px}}