.mkt{--teal:#10968b;--ink:#111827;--light:#f7fafa;--white:#fff;--slate:#5b6573;--line:#e5ebea;--peri:#a5b4fc;--pad:clamp(20px,4vw,48px);background:var(--light);color:var(--ink);font-family:var(--font-inter),Inter,system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.5;min-height:100vh}body.usaply-app:has(.mkt){background:#f7fafa;background-image:none}.mkt a{color:inherit}.mkt img{display:block;max-width:100%}.mkt .wrap{width:min(1080px,100%);margin:0 auto;padding:0 var(--pad)}.mkt .site-header{position:sticky;top:0;z-index:20;background:rgba(247,250,250,.92);backdrop-filter:blur(10px);border-bottom:1px solid transparent}.mkt .site-header.scrolled{border-bottom-color:var(--line)}.mkt .nav{justify-content:space-between;gap:24px;padding:18px 0;min-height:64px}.mkt .logo-link,.mkt .nav{display:flex;align-items:center}.mkt .logo-link{flex-shrink:0}.mkt .logo{height:36px;width:auto;display:block}.mkt .nav-end{gap:20px;margin-left:auto}.mkt .nav-end,.mkt 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0,rgba(165,180,252,.1) 45%,transparent 70%);z-index:-1}.mkt .card{position:absolute;background:var(--white);border:1px solid var(--line);border-radius:16px;padding:16px 18px;box-shadow:0 8px 30px rgba(17,24,39,.05);z-index:2;width:min(220px,42vw)}.mkt .card-brief{top:8%;left:0}.mkt .card-coach{bottom:6%;right:0}.mkt .card-label{font-size:11px;font-weight:500;letter-spacing:.04em;text-transform:uppercase;color:var(--slate);margin-bottom:10px}.mkt .card h3{font-size:14px;font-weight:600;margin:0 0 10px}.mkt .row{display:flex;justify-content:space-between;gap:12px;font-size:13px;padding:5px 0;border-bottom:1px solid var(--line)}.mkt .row:last-child{border-bottom:0}.mkt .row .k{color:var(--slate)}.mkt .row .v{font-weight:500;text-align:right}.mkt .q{color:var(--teal);font-weight:600}.mkt .chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;padding:5px 10px;border-radius:999px;margin:3px 3px 0 0}.mkt .chip-ok{background:#e6f5f3;color:#0d7f76}.mkt 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li:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal);margin-top:7px;flex-shrink:0}.mkt .faq-list{margin-top:28px;max-width:680px}.mkt details{border-bottom:1px solid var(--line);padding:16px 0}.mkt details summary{list-style:none;cursor:pointer;font-size:16px;font-weight:500;display:flex;justify-content:space-between;align-items:center;gap:16px}.mkt details summary::-webkit-details-marker{display:none}.mkt details summary:after{content:"+";font-weight:400;color:var(--slate);font-size:20px;line-height:1}.mkt details[open] summary:after{content:"-"}.mkt details p{margin:10px 0 0;font-size:15px;color:var(--slate);max-width:54ch;line-height:1.55}.mkt .final{padding:96px 0;text-align:center;background:var(--white);border-top:1px solid var(--line)}.mkt .final h2{max-width:18ch;margin:0 auto}.mkt .final .lede{margin:14px auto 0;font-size:17px;color:var(--slate);max-width:40ch}.mkt .final .hero-actions{justify-content:center}.mkt footer{border-top:1px solid var(--line);padding:28px 0 40px}.mkt .foot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;align-items:center;font-size:13px;color:var(--slate)}.mkt .foot a{text-decoration:none;color:var(--slate)}.mkt .foot .zaige{color:inherit;font-weight:600;text-decoration:none}.mkt .foot-links{display:flex;gap:18px;align-items:center}@media (max-width:860px){.mkt .nav-links{display:none}.mkt .menu-toggle{display:block}.mkt .nav-end{gap:10px}.mkt .nav-cta{padding:8px 12px;font-size:12px}.mkt .nav.open .nav-links{display:flex;position:absolute;left:0;right:0;top:64px;background:var(--light);flex-direction:column;align-items:stretch;padding:12px var(--pad) 20px;border-bottom:1px solid var(--line);gap:0;z-index:30}.mkt .nav.open .nav-links li{width:100%}.mkt .nav.open .nav-links a{padding:12px 0;border-bottom:1px solid var(--line);display:block}.mkt .hero-grid,.mkt .problem-grid,.mkt .teams-inner{grid-template-columns:1fr;gap:36px}.mkt .hero{padding:40px 0 56px}.mkt .stage{min-height:360px;order:-1;margin-bottom:8px}.mkt .orb{width:180px;height:180px}.mkt .steps{grid-template-columns:1fr}.mkt .problem-grid h2{max-width:none}.mkt section{padding:64px 0}}@media (max-width:480px){.mkt .logo{height:26px;width:auto}.mkt .card{width:min(170px,46vw);padding:12px}.mkt .card-brief{top:0;left:0}.mkt .card-coach{bottom:0;right:0}.mkt .hero-actions{flex-direction:column;align-items:stretch}.mkt .hero-actions .btn{width:100%}}