:root{--bg:#fff;--text:#111827;--muted:#6b7280;--border:#e5e7eb;--black:#000;--white:#fff;--radius:16px;--container:1200px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";color:var(--text);background:var(--bg);line-height:1.5}
img{max-width:100%;display:block}a{color:inherit;text-decoration:none}
.container{max-width:var(--container);margin:0 auto;padding:0 16px}
.btn{display:inline-block;padding:12px 18px;border-radius:999px;border:1px solid var(--border);font-weight:600}
.btn.primary{background:var(--black);color:var(--white);border-color:var(--black)}.btn:hover{opacity:.9}
.header{position:sticky;top:0;z-index:50;backdrop-filter:saturate(1.2) blur(8px);background:rgba(255,255,255,.9);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 0}
.brand{font-weight:900;letter-spacing:.12em}.nav{display:none;gap:20px;font-size:14px}.lang-switch{padding:6px 10px;border:1px solid var(--border);border-radius:12px;background:#fff}
@media(min-width:768px){.nav{display:flex}}.announce{background:#000;color:#fff;text-align:center;font-size:14px;padding:8px 10px}
.hero{height:60vh;min-height:340px;background-size:cover;background-position:center;display:block;width:100%}
.book-card{margin-top:-48px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:0 10px 30px rgba(0,0,0,.08);display:grid;gap:12px;grid-template-columns:1fr}
@media(min-width:768px){.book-card{padding:24px;grid-template-columns:repeat(5,1fr);align-items:end}}
.field label{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}.input,.select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:12px}
.grid{display:grid;gap:16px}.grid-3{grid-template-columns:1fr}
@media(min-width:768px){.grid-3{grid-template-columns:repeat(2,1fr)}}@media(min-width:1024px){.grid-3{grid-template-columns:repeat(3,1fr)}}
.card{border:1px solid var(--border);border-radius:24px;overflow:hidden;background:#fff;transition:box-shadow .2s}.card:hover{box-shadow:0 12px 28px rgba(0,0,0,.08)}.card-body{padding:16px}
.subtitle{color:var(--muted);font-size:14px;margin-top:4px}.section{padding:56px 0}.section h2{font-size:28px;margin:0 0 8px}.section .section-sub{color:var(--muted);margin-bottom:16px}
.scroller{overflow-x:auto;-webkit-overflow-scrolling:touch}.scroller-row{display:flex;gap:16px;padding-right:16px}
.banner{border-radius:24px;overflow:hidden;border:1px solid var(--border);box-shadow:0 10px 24px rgba(0,0,0,.06)}
.footer{margin-top:40px;border-top:1px solid var(--border)}.footer-cols{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;padding:32px 0;font-size:14px}
.footer h4{margin:0 0 10px;font-size:14px}.footer a{color:var(--muted)}.footer a:hover{color:var(--text)}.footer-bottom{text-align:center;color:#6b7280;font-size:12px;padding-bottom:24px}
.sticky-book{position:fixed;left:16px;right:16px;bottom:16px;display:block}@media(min-width:768px){.sticky-book{display:none}}
.tag{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.9);backdrop-filter:blur(6px);padding:6px 10px;border-radius:999px;font-size:12px;font-weight:600}
.aspect-16x10{position:relative;padding-top:62.5%}.aspect-16x9{position:relative;padding-top:56.25%}.aspect-4x3{position:relative;padding-top:75%}
.aspect-fill>img,.aspect-16x10>img,.aspect-16x9>img,.aspect-4x3>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hidden-md{display:block}@media(min-width:768px){.hidden-md{display:none}}