:root{--bg:#f7f8fa;--surface:#fff;--ink:#151820;--muted:#667085;--line:#e4e7ec;--accent:#2557d6;--accent-dark:#183f9f;--soft:#edf2ff;--radius:18px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--ink);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}.container{width:min(1160px,100% - 40px);margin:0 auto}.site-header{z-index:20;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);background:#f7f8fae6;position:sticky;top:0}.nav-wrap{align-items:center;gap:28px;height:72px;display:flex}.brand{letter-spacing:.08em;font-weight:900}.nav-links{color:#3c4350;gap:24px;margin-left:auto;font-weight:600;display:flex}.button{background:var(--accent);color:#fff;border-radius:12px;justify-content:center;align-items:center;gap:8px;padding:13px 18px;font-weight:750;display:inline-flex;box-shadow:0 8px 20px #2557d62e}.button:hover{background:var(--accent-dark)}.button-outline{color:var(--ink);border:1px solid var(--line);box-shadow:none;background:0 0}.button-outline:hover{background:#fff}.button-small{padding:9px 14px}.button-wide{width:100%;margin-top:22px}.hero{padding:78px 0 42px}.hero-grid{grid-template-columns:1.35fr .65fr;align-items:stretch;gap:34px;display:grid}.hero h1,.page-heading h1,.detail-summary h1,.narrow h1{letter-spacing:-.055em;margin:13px 0 22px;font-size:clamp(2.5rem,6vw,5rem);line-height:.98}.hero-copy,.lead{color:var(--muted);max-width:720px;font-size:1.17rem;line-height:1.7}.eyebrow{letter-spacing:.14em;color:var(--accent);font-size:.79rem;font-weight:850}.hero-actions{gap:12px;margin-top:30px;display:flex}.hero-panel{background:var(--ink);color:#fff;border-radius:var(--radius);flex-direction:column;justify-content:flex-end;min-height:330px;padding:32px;display:flex}.hero-panel p{color:#c7cbd3;line-height:1.6}.mini-stats{grid-template-columns:1fr 1fr;gap:12px;margin-top:22px;display:grid}.mini-stats div{background:#ffffff14;border-radius:12px;padding:14px}.mini-stats strong,.mini-stats span{display:block}.mini-stats strong{font-size:1.5rem}.mini-stats span{color:#bfc5d0;margin-top:3px;font-size:.82rem}.section{padding:58px 0}.section-muted{background:#eef1f5}.section-heading{justify-content:space-between;align-items:end;margin-bottom:24px;display:flex}.section-heading h2,.sell-banner h2{letter-spacing:-.04em;margin:6px 0 0;font-size:2.1rem}.card-grid{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}.computer-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);transition:all .2s;overflow:hidden;box-shadow:0 8px 24px #10182809}.computer-card:hover{transform:translateY(-3px);box-shadow:0 14px 34px #10182814}.card-image-wrap{aspect-ratio:3/2;background:#eef1f5;position:relative}.card-image-wrap img,.detail-image img{object-fit:cover}.card-body{padding:20px}.card-topline{color:var(--muted);text-transform:uppercase;letter-spacing:.05em;justify-content:space-between;font-size:.77rem;font-weight:700;display:flex}.card-body h3{margin:12px 0 8px;font-size:1.2rem}.card-body p{color:var(--muted);margin:5px 0;font-size:.92rem}.card-price{margin-top:18px;font-size:1.35rem;font-weight:850}.feature-grid{grid-template-columns:repeat(3,1fr);gap:32px;display:grid}.feature svg{color:var(--accent)}.feature p{color:var(--muted);line-height:1.6}.sell-banner{border:1px solid var(--line);border-radius:var(--radius);background:#fff;justify-content:space-between;align-items:center;gap:30px;padding:32px;display:flex}.sell-banner p{color:var(--muted)}.site-footer{border-top:1px solid var(--line);background:#fff;padding:34px 0}.footer-inner{color:var(--muted);justify-content:space-between;align-items:end;font-size:.9rem;display:flex}.footer-inner strong{color:var(--ink);letter-spacing:.08em}.page-heading{margin-bottom:30px}.page-heading h1{margin-bottom:8px;font-size:3.6rem}.page-heading p{color:var(--muted)}.filters{border:1px solid var(--line);background:#fff;border-radius:16px;grid-template-columns:2fr repeat(3,1fr);gap:12px;margin-bottom:28px;padding:16px;display:grid}.filters label{color:#475467;flex-direction:column;gap:7px;font-size:.78rem;font-weight:750;display:flex}.filters input,.filters select{border:1px solid var(--line);width:100%;font:inherit;color:var(--ink);background:#fff;border-radius:10px;padding:12px}.filter-actions{align-items:flex-end;display:flex}.clear-filters{border:1px solid var(--line);width:100%;color:var(--ink);font:inherit;cursor:pointer;background:#fff;border-radius:10px;padding:12px;font-weight:750}.clear-filters:hover:not(:disabled){background:var(--soft);border-color:#cbd7f6}.clear-filters:disabled{cursor:not-allowed;opacity:.45}.empty-state{text-align:center;border-radius:var(--radius);background:#fff;border:1px dashed #c8ced8;padding:80px 20px}.back-link{color:var(--muted);margin-bottom:24px;font-weight:650;display:inline-block}.detail-grid{grid-template-columns:1.25fr .75fr;gap:38px;display:grid}.detail-image{aspect-ratio:3/2;border-radius:var(--radius);border:1px solid var(--line);background:#eef1f5;position:relative;overflow:hidden}.thumb-row{gap:10px;margin-top:12px;display:flex}.thumb{border:1px solid var(--line);color:var(--muted);background:#fff;border-radius:10px;padding:10px 14px;font-size:.83rem}.active-thumb{color:var(--accent);border-color:#9cb5f1}.detail-summary{border:1px solid var(--line);border-radius:var(--radius);background:#fff;align-self:start;padding:28px;position:sticky;top:92px}.detail-summary h1{margin:10px 0;font-size:2.5rem}.detail-cpu{color:var(--muted)}.detail-price{margin:26px 0 18px;font-size:2.2rem;font-weight:900}.detail-price small{color:var(--muted);font-size:.9rem;font-weight:700}.detail-meta{color:#475467;gap:10px;display:grid}.detail-meta span{align-items:center;gap:8px;display:flex}.fine-print{color:var(--muted);text-align:center;font-size:.78rem;line-height:1.45}.info-grid{grid-template-columns:1fr 1fr;gap:22px;margin-top:28px;display:grid}.info-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:28px}.info-card h2{margin-top:0}.spec-list{margin:0}.spec-list div{border-bottom:1px solid #edf0f4;grid-template-columns:160px 1fr;padding:13px 0;display:grid}.spec-list div:last-child{border-bottom:0}.spec-list dt{color:var(--muted)}.spec-list dd{margin:0;font-weight:700}.condition-line{gap:13px;margin:18px 0 10px;display:flex}.condition-line svg{color:#2d8b57;flex:none}.condition-line p{color:var(--muted);line-height:1.6}.compact{margin-top:16px}.narrow{max-width:800px}.notice{background:var(--soft);color:#304a8f;border:1px solid #cbd7f6;border-radius:12px;margin-top:26px;padding:18px;font-weight:650}@media (max-width:900px){.hero-grid,.detail-grid,.info-grid{grid-template-columns:1fr}.hero-panel{min-height:250px}.card-grid{grid-template-columns:repeat(2,1fr)}.filters{grid-template-columns:1fr 1fr}.search-field{grid-column:1/-1}.detail-summary{position:static}.feature-grid{grid-template-columns:1fr}.nav-links{display:none}}@media (max-width:620px){.container{width:min(100% - 24px,1160px)}.nav-wrap{height:64px}.hero{padding-top:48px}.hero h1{font-size:3.2rem}.hero-actions{flex-direction:column}.card-grid,.filters{grid-template-columns:1fr}.search-field{grid-column:auto}.sell-banner,.footer-inner{flex-direction:column;align-items:flex-start}.section{padding:42px 0}.page-heading h1{font-size:2.8rem}.detail-summary h1{font-size:2.15rem}.spec-list div{grid-template-columns:1fr;gap:5px}.button-small{display:none}}
.auth-page{min-height:calc(100vh - 225px)}.auth-shell{justify-content:center;display:flex}.auth-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;width:min(100%,520px);padding:34px;box-shadow:0 14px 34px #1018280f}.auth-card h1{letter-spacing:-.045em;margin:10px 0;font-size:2.35rem}.auth-card>p{color:var(--muted);line-height:1.6}.auth-form{gap:17px;margin-top:26px;display:grid}.auth-form label{color:#475467;gap:7px;font-size:.85rem;font-weight:750;display:grid}.auth-form input{border:1px solid var(--line);width:100%;font:inherit;color:var(--ink);background:#fff;border-radius:10px;padding:13px}.auth-form input:focus{outline:3px solid var(--soft);border-color:#9cb5f1}.auth-submit{font:inherit;cursor:pointer;border:0;margin-top:3px}.auth-submit:disabled{cursor:wait;opacity:.65}.auth-message{border-radius:10px;margin:0;padding:12px 14px;font-size:.9rem;line-height:1.45}.auth-error{color:#9a2727;background:#fff1f1;border:1px solid #f2c7c7}.auth-success{color:#25633d;background:#edf8f1;border:1px solid #b9dec7}.auth-switch{text-align:center;font-size:.9rem}.auth-switch a{color:var(--accent);font-weight:750}.seller-placeholder{border:1px solid var(--line);border-radius:var(--radius);background:#fff;justify-content:space-between;align-items:center;gap:24px;margin-top:30px;padding:24px;display:flex}.seller-placeholder p{color:var(--muted);margin:7px 0 0}.seller-placeholder button{font:inherit;cursor:pointer}@media (max-width:620px){.auth-card{padding:24px}.seller-placeholder{flex-direction:column;align-items:flex-start}}