:root{
  --bg:#0b0f14;
  --panel: rgba(255,255,255,.08);
  --panel2: rgba(255,255,255,.10);
  --stroke: rgba(255,255,255,.16);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.70);
  --soft: rgba(255,255,255,.06);
  --accent: rgba(167, 215, 255, .90);
  --accent2: rgba(255, 192, 203, .70);
  --shadow: 0 18px 50px rgba(0,0,0,.35);
  --radius: 20px;
  --radius2: 28px;
  --max: 1180px;
  --font: ui-sans-serif, system-ui, -apple-system, "SF Pro Display", "Inter", "Segoe UI", Roboto, Arial, sans-serif;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  color:var(--text);
  font-family:var(--font);
  background:
    radial-gradient(900px 600px at 20% 0%, rgba(167,215,255,.18), transparent 60%),
    radial-gradient(800px 500px at 90% 10%, rgba(255,192,203,.14), transparent 55%),
    radial-gradient(900px 700px at 40% 90%, rgba(122,255,203,.10), transparent 60%),
    linear-gradient(180deg, #070a0f, #0b0f14 55%, #0a0d12);
  overflow-x:hidden;
}

a{color:inherit; text-decoration:none}
img{max-width:100%; display:block}
button,input,select,textarea{font-family:inherit}

.container{max-width:var(--max); margin:0 auto; padding:0 18px}
main{padding: 26px 0 56px}
.section{margin-top: 28px}
.grid{display:grid; gap:16px}
.grid-2{grid-template-columns: 1.2fr .8fr}
.grid-3{grid-template-columns: repeat(3,1fr)}
@media (max-width: 980px){
  .grid-2{grid-template-columns: 1fr}
  .grid-3{grid-template-columns: repeat(2,1fr)}
}
@media (max-width: 620px){
  .grid-3{grid-template-columns: 1fr}
}

.glass{
  background: linear-gradient(180deg, var(--panel), rgba(255,255,255,.04));
  border:1px solid var(--stroke);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
}

.card{
  padding:18px;
  border-radius: var(--radius2);
  background: linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,.05));
  border:1px solid rgba(255,255,255,.14);
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
  backdrop-filter: blur(18px);
}

.muted{color:var(--muted)}
.kicker{
  display:inline-flex;
  gap:8px;
  align-items:center;
  padding:8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);
  color: rgba(255,255,255,.80);
  font-size: 13px;
}
h1,h2,h3{margin:0 0 10px}
h1{font-size: clamp(28px, 3.6vw, 44px); letter-spacing:-.02em}
h2{font-size: clamp(20px, 2.2vw, 28px)}
h3{font-size: 16px; letter-spacing:.01em}
p{margin: 0 0 12px; line-height:1.55}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.10);
  color: var(--text);
  cursor:pointer;
  transition: transform .15s ease, background .15s ease, border .15s ease;
}
.btn:hover{transform: translateY(-1px); background: rgba(255,255,255,.14)}
.btn:active{transform: translateY(0px)}
.btn-primary{
  background: linear-gradient(135deg, rgba(167,215,255,.25), rgba(255,192,203,.18));
  border-color: rgba(167,215,255,.35);
}
.btn-ghost{
  background: rgba(255,255,255,.06);
}
.pill{
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  font-size: 13px;
}

.sp-header{
  position:sticky;
  top:0;
  z-index:20;
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  background: linear-gradient(180deg, rgba(8,10,14,.72), rgba(8,10,14,.38));
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding: 14px 0;
}
.brand{display:flex; align-items:center; gap:12px}
.brand-mark{
  width:38px;height:38px;
  border-radius: 16px;
  display:grid; place-items:center;
  background: linear-gradient(135deg, rgba(167,215,255,.20), rgba(255,192,203,.14));
  border:1px solid rgba(255,255,255,.16);
  box-shadow: 0 10px 24px rgba(0,0,0,.25);
}
.brand-name{font-weight:700; letter-spacing:.02em}
.brand-tag{display:block; font-size:12px; color: rgba(255,255,255,.70); margin-top:2px}

.nav{display:flex; align-items:center; gap:18px}
.nav-link{font-size:14px; color: rgba(255,255,255,.86)}
.nav-link:hover{color: rgba(255,255,255,.98)}
.nav-btn{background:transparent; border:0; padding:0}

.nav-dropdown{position:relative}
.dropdown-panel{
  position:absolute;
  top: 44px;
  left: -10px;
  min-width: 220px;
  padding: 10px;
  border-radius: 18px;
  background: rgba(20,24,32,.75);
  border:1px solid rgba(255,255,255,.14);
  box-shadow: 0 18px 50px rgba(0,0,0,.35);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  opacity:0;
  transform: translateY(-6px);
  pointer-events:none;
  transition: opacity .16s ease, transform .16s ease;
}
.nav-dropdown:focus-within .dropdown-panel,
.nav-dropdown:hover .dropdown-panel{
  opacity:1; transform: translateY(0px); pointer-events:auto;
}
.dropdown-item{
  display:block;
  padding: 10px 12px;
  border-radius: 14px;
  font-size: 14px;
  color: rgba(255,255,255,.90);
}
.dropdown-item:hover{background: rgba(255,255,255,.08)}

.actions{display:flex; align-items:center; gap:10px}
.icon-btn{
  position:relative;
  width:40px;height:40px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.08);
  display:grid; place-items:center;
}
.icon-btn:hover{background: rgba(255,255,255,.12)}
.icon{font-size:16px}
.badge{
  position:absolute;
  top:-6px; right:-6px;
  min-width:18px;height:18px;
  padding:0 5px;
  border-radius:999px;
  background: rgba(167,215,255,.28);
  border:1px solid rgba(167,215,255,.40);
  font-size:12px;
  display:grid; place-items:center;
}

.search-drawer{
  border-top: 1px solid rgba(255,255,255,.10);
  background: rgba(8,10,14,.55);
  display:none;
}
.search-drawer.open{display:block}
.search-inner{display:flex; gap:10px; padding: 12px 0}
.search-input{
  width:100%;
  padding: 12px 14px;
  border-radius: 14px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: var(--text);
  outline:none;
}
.search-results{padding-bottom: 14px}
.search-item{
  display:flex; gap:12px; align-items:center;
  padding: 10px;
  border-radius: 16px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
  margin-bottom:10px;
}
.search-item img{width:54px;height:54px; object-fit:cover; border-radius: 14px; border:1px solid rgba(255,255,255,.12)}
.search-item .name{font-weight:650}
.search-item .meta{font-size: 13px; color: rgba(255,255,255,.70)}

.hero{
  padding: 26px 0 10px;
}
.hero-shell{
  padding: 22px;
  border-radius: 32px;
  position:relative;
  overflow:hidden;
}
.hero-shell:before{
  content:"";
  position:absolute; inset:-40px;
  background:
    radial-gradient(600px 260px at 20% 30%, rgba(167,215,255,.22), transparent 70%),
    radial-gradient(560px 260px at 80% 50%, rgba(255,192,203,.16), transparent 70%),
    radial-gradient(500px 300px at 40% 120%, rgba(122,255,203,.12), transparent 70%);
  filter: blur(6px);
}
.hero-content{position:relative; display:grid; grid-template-columns: 1.2fr .8fr; gap:16px; align-items:center}
@media(max-width: 980px){.hero-content{grid-template-columns: 1fr}}
.hero-art{
  border-radius: 28px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.05);
  min-height: 240px;
  position:relative;
}
.hero-art .texture{
  position:absolute; inset:0;
  background:
    radial-gradient(circle at 30% 20%, rgba(255,255,255,.14), transparent 40%),
    radial-gradient(circle at 70% 60%, rgba(255,255,255,.10), transparent 45%),
    url('assets/img/texture.png');
  background-size: cover;
  opacity:.65;
  mix-blend-mode: screen;
}
.hero-art .photo{
  position:absolute; inset:0;
  background-image: url('assets/img/hero-books.jpg');
  background-size: cover;
  background-position: center;
  opacity:.82;
}
.hero-actions{display:flex; flex-wrap:wrap; gap:10px; margin-top: 12px}

.product-grid{display:grid; grid-template-columns: repeat(4,1fr); gap:14px}
@media(max-width: 1100px){.product-grid{grid-template-columns: repeat(3,1fr)}}
@media(max-width: 820px){.product-grid{grid-template-columns: repeat(2,1fr)}}
@media(max-width: 520px){.product-grid{grid-template-columns: 1fr}}
.product-card{
  overflow:hidden;
  border-radius: 24px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.05);
  box-shadow: 0 12px 34px rgba(0,0,0,.25);
  transition: transform .16s ease, background .16s ease;
}
.product-card:hover{transform: translateY(-2px); background: rgba(255,255,255,.07)}
.product-media{position:relative; height:170px; overflow:hidden}
.product-media img{width:100%; height:100%; object-fit:cover}
.product-body{padding: 12px}
.price-row{display:flex; align-items:baseline; gap:10px}
.price{font-weight:700}
.compare{color: rgba(255,255,255,.58); text-decoration: line-through; font-size: 13px}
.badges{display:flex; flex-wrap:wrap; gap:6px; margin-top:8px}
.badge-pill{
  font-size:12px;
  padding:6px 9px;
  border-radius: 999px;
  background: rgba(167,215,255,.14);
  border:1px solid rgba(167,215,255,.20);
}

.controls{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  align-items:center;
  justify-content:space-between;
}
.controls .left{display:flex; gap:10px; flex-wrap:wrap; align-items:center}
.select, .input{
  padding: 10px 12px;
  border-radius: 14px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: var(--text);
  outline:none;
}
.input{min-width: 220px}

.table{
  width:100%;
  border-collapse: collapse;
  overflow:hidden;
  border-radius: 18px;
  border:1px solid rgba(255,255,255,.14);
}
.table th,.table td{
  padding: 12px 10px;
  border-bottom: 1px solid rgba(255,255,255,.10);
  text-align:left;
  font-size: 14px;
}
.table th{color: rgba(255,255,255,.82)}
.table tr:last-child td{border-bottom:0}
.line{height:1px;background: rgba(255,255,255,.10); margin: 14px 0}

.form-row{display:grid; grid-template-columns: repeat(2,1fr); gap:12px}
@media(max-width: 720px){.form-row{grid-template-columns: 1fr}}
label{display:block; font-size: 13px; color: rgba(255,255,255,.76); margin-bottom:6px}
textarea{min-height: 110px; resize: vertical}

.notice{
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
}
.toast{
  position: fixed;
  bottom: 18px; left: 50%;
  transform: translateX(-50%);
  z-index: 60;
  background: rgba(20,24,32,.78);
  border:1px solid rgba(255,255,255,.16);
  border-radius: 18px;
  padding: 10px 12px;
  box-shadow: 0 18px 50px rgba(0,0,0,.35);
  backdrop-filter: blur(18px) saturate(150%);
  display:none;
  max-width: min(520px, calc(100vw - 20px));
}
.toast.show{display:block}
.toast .t-title{font-weight: 650; margin-bottom:4px}
.toast .t-sub{font-size: 13px; color: rgba(255,255,255,.70)}

.sp-footer{
  border-top: 1px solid rgba(255,255,255,.10);
  background: rgba(8,10,14,.50);
  backdrop-filter: blur(16px) saturate(130%);
  -webkit-backdrop-filter: blur(16px) saturate(130%);
  padding: 26px 0 18px;
}
.footer-grid{display:grid; grid-template-columns: 1.2fr .8fr .8fr; gap:16px}
@media(max-width: 980px){.footer-grid{grid-template-columns: 1fr}}
.footer-brand{display:flex; gap:10px; align-items:center}
.footer-name{font-weight: 700}
.footer-sub{font-size: 13px; color: rgba(255,255,255,.65)}
.footer-title{font-weight:650; margin-bottom:10px}
.footer-link{display:block; color: rgba(255,255,255,.78); padding: 8px 0}
.footer-link:hover{color: rgba(255,255,255,.95)}
.footer-bottom{display:flex; flex-wrap:wrap; gap:10px; justify-content:space-between; padding-top: 14px; color: rgba(255,255,255,.70)}