:root{--brand: #1e3a5f;--brand-dark: #14283f;--ink: #1a1a1a;--muted: #6b7280;--line: #e5e7eb;--bg: #ffffff;--bg-soft: #f7f6f3;--accent: #d4a017;--success: #16a34a;--danger: #dc2626;--radius: 10px;--shadow: 0 1px 3px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Padauk,system-ui,-apple-system,sans-serif;background:var(--bg-soft);color:var(--ink);-webkit-font-smoothing:antialiased;line-height:1.5}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.site{min-height:100vh;display:flex;flex-direction:column}.announce{background:var(--ink);color:#fff;font-size:.8rem;display:flex;align-items:center;justify-content:center;gap:6px;flex-wrap:wrap;padding:7px 12px}.announce svg{vertical-align:middle}.logo,.icon-btn,.btn,.section-head h2,.footer-col h4,.footer-col p,.book-price,.coming-soon-note,.card-badge,.search button{display:inline-flex;align-items:center;gap:6px}.section-head h2,.footer-col h4,.footer-col p{display:flex}.btn{justify-content:center}.logo{display:inline-flex}.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}.header-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:16px;padding:12px 16px}.logo{font-size:1.25rem;font-weight:800;color:var(--brand);white-space:nowrap;letter-spacing:-.3px}.logo span{color:var(--ink)}.search{flex:1;display:flex;align-items:center;background:var(--bg-soft);border:1px solid var(--line);border-radius:999px;padding:0 6px 0 16px;max-width:560px}.search input{flex:1;border:none;background:transparent;padding:10px 8px;font-size:.95rem;outline:none;font-family:inherit}.search button{border:none;background:var(--brand);color:#fff;border-radius:999px;padding:8px 16px;font-weight:600;cursor:pointer;font-size:.9rem}.search button:hover{background:var(--brand-dark)}.header-actions{display:flex;align-items:center;gap:8px;margin-left:auto}.icon-btn{position:relative;display:inline-flex;align-items:center;gap:6px;background:none;border:1px solid var(--line);border-radius:999px;padding:8px 14px;cursor:pointer;font-size:.9rem;font-weight:600;color:var(--ink);white-space:nowrap}.icon-btn:hover{border-color:var(--brand);color:var(--brand)}.cart-count{background:var(--brand);color:#fff;border-radius:999px;font-size:.72rem;font-weight:700;min-width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center;padding:0 5px}.page{flex:1;width:100%}.container{max-width:1200px;margin:0 auto;padding:0 16px}.content{max-width:720px;margin:0 auto;padding:24px 16px 80px}.hero{background:linear-gradient(120deg,var(--brand) 0%,var(--brand-dark) 100%);color:#fff;padding:40px 16px;text-align:center}.hero-inner{max-width:760px;margin:0 auto}.hero h1{font-size:clamp(1.5rem,4vw,2.4rem);font-weight:800;margin-bottom:10px}.hero p{font-size:1rem;opacity:.95}.section{max-width:1200px;margin:0 auto;padding:28px 16px}.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;border-left:4px solid var(--brand);padding-left:12px}.section-head h2{font-size:1.3rem;font-weight:800}.section-head .count{color:var(--muted);font-size:.85rem}.book-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:18px}@media(max-width:600px){.book-grid{grid-template-columns:repeat(2,1fr);gap:12px}}.book-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .15s ease,box-shadow .15s ease}.book-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.book-cover{aspect-ratio:3 / 4;width:100%;object-fit:cover;background:linear-gradient(135deg,#eef2ff,#e0e7ff);display:flex;align-items:center;justify-content:center;font-size:2.8rem}.book-info{padding:12px;flex:1;display:flex;flex-direction:column;gap:5px}.book-title{font-size:.92rem;font-weight:700;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.book-author{font-size:.78rem;color:var(--muted)}.book-price{font-weight:800;color:var(--brand);font-size:1.05rem;margin-top:4px}.stock-out{color:var(--danger);font-size:.78rem;font-weight:600}.card-badge{position:absolute;top:10px;left:10px;background:var(--accent);color:#1a1a1a;font-size:.7rem;font-weight:800;padding:3px 10px;border-radius:999px;box-shadow:var(--shadow)}.btn{border:none;border-radius:8px;padding:12px 18px;font-size:.95rem;font-weight:700;cursor:pointer;background:var(--brand);color:#fff;width:100%;transition:background .15s,filter .15s;font-family:inherit}.btn:hover{background:var(--brand-dark)}.btn:disabled{background:#c7cbd1;cursor:not-allowed}.btn-outline{background:#fff;color:var(--brand);border:1.5px solid var(--brand)}.btn-outline:hover{background:#fff5f5}.btn-success{background:var(--success)}.btn-success:hover{filter:brightness(1.08);background:var(--success)}.btn-sm{padding:9px 12px;font-size:.85rem}.btn-add{margin-top:auto}.cart-bar{position:fixed;bottom:16px;left:50%;transform:translate(-50%);width:calc(100% - 32px);max-width:480px;background:var(--ink);color:#fff;border-radius:999px;padding:12px 20px;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow-lg);z-index:40}.cart-bar .total{flex:1;font-weight:700}.cart-bar button{background:var(--brand);border:none;color:#fff;border-radius:999px;padding:9px 18px;font-weight:700;cursor:pointer}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:16px;box-shadow:var(--shadow)}.row{display:flex;justify-content:space-between;align-items:center;padding:10px 0}.row+.row{border-top:1px solid var(--line)}.qty{display:flex;align-items:center;gap:8px}.qty button{width:32px;height:32px;border-radius:8px;border:1px solid var(--line);background:#fff;font-size:1.1rem;cursor:pointer}.field{margin-bottom:14px}.field label{display:block;font-size:.85rem;font-weight:600;margin-bottom:6px;color:var(--ink)}.field input,.field textarea,.field select{width:100%;padding:12px;border:1px solid var(--line);border-radius:8px;font-size:1rem;font-family:inherit}.field input:focus,.field textarea:focus{outline:2px solid var(--brand);border-color:transparent}.field .err{color:var(--danger);font-size:.8rem;margin-top:4px}.muted{color:var(--muted);font-size:.88rem}.center{text-align:center}.qr-img{width:240px;height:240px;display:block;margin:12px auto;border-radius:8px}.alert{padding:12px 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