@import url("https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@600;700&family=Manrope:wght@400;500;600;700;800&display=swap");

:root {
  --bg: #020711;
  --bg-deep: #01040a;
  --surface: rgba(9, 22, 43, 0.78);
  --surface-solid: #09162b;
  --surface-soft: rgba(16, 35, 64, 0.68);
  --surface-blue: rgba(32, 116, 193, 0.18);
  --text: #f7f2e8;
  --muted: #a9b8cc;
  --ink: #fffaf0;
  --line: rgba(245, 190, 76, 0.19);
  --line-blue: rgba(105, 190, 255, 0.2);
  --accent: #f8bd4b;
  --accent-soft: #ffe2a0;
  --accent-strong: #d88817;
  --blue: #58bfff;
  --radius: 22px;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.42);
  --glow: 0 0 32px rgba(248, 189, 75, 0.17);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scrollbar-color: var(--accent-strong) var(--bg-deep); }
body {
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 72% 8%, rgba(30, 130, 229, 0.2), transparent 26rem),
    radial-gradient(circle at 10% 35%, rgba(11, 72, 135, 0.18), transparent 30rem),
    linear-gradient(145deg, var(--bg-deep), #041127 48%, #020813);
  color: var(--text);
  font-family: "Manrope", Arial, sans-serif;
  line-height: 1.7;
  min-height: 100vh;
}
body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    radial-gradient(circle, rgba(255,255,255,.75) 0 1px, transparent 1.5px),
    radial-gradient(circle, rgba(86,190,255,.55) 0 1px, transparent 1.5px);
  background-position: 0 0, 42px 68px;
  background-size: 128px 128px, 176px 176px;
  opacity: .22;
  content: "";
  pointer-events: none;
}
body::after {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: linear-gradient(115deg, transparent 0 45%, rgba(76, 173, 255, .035) 50%, transparent 55%);
  content: "";
  pointer-events: none;
}
body.no-scroll { overflow: hidden; }
::selection { background: var(--accent); color: #07101f; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.sr-only { position: absolute; overflow: hidden; clip: rect(0,0,0,0); width: 1px; height: 1px; white-space: nowrap; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto minmax(220px, 1fr) auto auto;
  gap: 22px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  background: rgba(2, 8, 19, .72);
  padding: 15px clamp(18px, 3vw, 48px);
  backdrop-filter: blur(22px) saturate(145%);
  transition: background .3s ease, box-shadow .3s ease, padding .3s ease;
}
.site-header.is-scrolled { background: rgba(2, 7, 16, .92); padding-block: 10px; box-shadow: 0 14px 40px rgba(0,0,0,.3); }
.site-header > * { min-width: 0; }
.brand { display: inline-flex; align-items: center; min-width: 132px; }
.brand-logo { border: 0; border-radius: 0; width: 118px; height: 46px; object-fit: contain; object-position: left center; background: transparent; filter: drop-shadow(0 0 12px rgba(248,189,75,.2)); }
.search input { border: 1px solid var(--line-blue); border-radius: 999px; background: rgba(8,22,43,.65); padding: 11px 18px; width: 100%; min-height: 44px; color: var(--text); transition: border-color .25s, background .25s, box-shadow .25s; }
.search input::placeholder { color: #8293a9; }
.search input:focus { outline: 0; border-color: rgba(248,189,75,.65); background: rgba(10,27,52,.92); box-shadow: 0 0 0 4px rgba(248,189,75,.08); }
.header-nav, .header-actions, .site-footer nav { display: flex; gap: 18px; align-items: center; }
.header-nav a, .site-footer a { position: relative; color: var(--muted); font-size: 13px; font-weight: 600; letter-spacing: .03em; transition: color .2s; }
.header-nav a::after { position: absolute; right: 0; bottom: -7px; left: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--accent), transparent); transform: scaleX(0); transition: transform .25s; content: ""; }
.header-nav a:hover, .site-footer a:hover { color: var(--accent-soft); }
.header-nav a:hover::after { transform: scaleX(1); }
.icon-button { display: inline-flex; justify-content: center; align-items: center; border: 1px solid var(--line); border-radius: 999px; background: rgba(15,34,61,.72); padding: 9px 14px; min-height: 40px; color: var(--accent-soft); font-size: 13px; font-weight: 700; transition: transform .2s, border-color .2s, background .2s; }
.icon-button:hover { transform: translateY(-2px); border-color: var(--accent); background: rgba(248,189,75,.1); }

main { margin: 0 auto; padding: 24px clamp(16px, 3vw, 48px) 76px; max-width: 1500px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; margin-bottom: 24px; color: #8192a8; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.breadcrumbs a:hover { color: var(--accent-soft); }
.product-layout { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(370px, .8fr); gap: clamp(26px, 4vw, 58px); align-items: start; }
.gallery { min-width: 0; }
.gallery-main { position: relative; display: grid; place-items: center; overflow: hidden; border: 1px solid var(--line); border-radius: 30px; background: #06142a; aspect-ratio: 1 / 1; box-shadow: var(--shadow), inset 0 0 60px rgba(34,124,212,.08); isolation: isolate; }
.gallery-main::after { position: absolute; inset: 0; z-index: 1; border-radius: inherit; background: linear-gradient(145deg, rgba(255,255,255,.06), transparent 28%, transparent 70%, rgba(248,189,75,.1)); content: ""; pointer-events: none; }
.gallery-main img { width: 100%; height: 100%; object-fit: cover; user-select: none; transition: opacity .25s ease, transform .65s cubic-bezier(.2,.8,.2,1); }
.gallery-main:hover img { transform: scale(1.018); }
.gallery-main img.is-switching { opacity: .2; transform: scale(.985); }
.gallery-nav { position: absolute; top: 50%; z-index: 3; display: grid; place-items: center; transform: translateY(-50%); border: 1px solid rgba(248,189,75,.32); border-radius: 50%; background: rgba(3,12,26,.72); width: 46px; height: 46px; color: var(--accent-soft); font-size: 30px; line-height: 1; backdrop-filter: blur(12px); box-shadow: 0 12px 35px rgba(0,0,0,.3); transition: background .2s, transform .2s, border-color .2s; }
.gallery-nav:hover { transform: translateY(-50%) scale(1.08); border-color: var(--accent); background: rgba(20,46,79,.9); }
.gallery-nav.previous { left: 18px; }
.gallery-nav.next { right: 18px; }
.thumbnail-strip { display: grid; grid-template-columns: repeat(2, 112px); gap: 12px; margin-top: 15px; }
.thumbnail { overflow: hidden; border: 1px solid var(--line-blue); border-radius: 14px; background: var(--surface-soft); padding: 0; aspect-ratio: 1 / 1; opacity: .62; transition: opacity .2s, transform .2s, border-color .2s, box-shadow .2s; }
.thumbnail img { width: 100%; height: 100%; object-fit: cover; }
.thumbnail-alt img { object-position: 72% center; }
.thumbnail:hover { opacity: 1; transform: translateY(-3px); }
.thumbnail.is-active { opacity: 1; border-color: var(--accent); box-shadow: 0 0 0 2px rgba(248,189,75,.13), var(--glow); }

.product-panel { position: sticky; top: 96px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(145deg, rgba(12,31,58,.9), rgba(5,16,34,.92)); padding: clamp(22px, 3vw, 34px); box-shadow: var(--shadow); backdrop-filter: blur(20px); }
.product-panel::before { position: absolute; top: -130px; right: -120px; width: 300px; height: 300px; border-radius: 50%; background: radial-gradient(circle, rgba(65,167,255,.2), transparent 67%); content: ""; pointer-events: none; }
.seller-row { position: relative; display: flex; gap: 12px; align-items: center; margin-bottom: 24px; }
.seller-avatar { display: block; flex: 0 0 44px; border: 1px solid rgba(248,189,75,.4); border-radius: 50%; background: linear-gradient(145deg, #17365d, #07142a); width: 44px; height: 44px; object-fit: cover; box-shadow: var(--glow); }
.muted { margin: 0; color: var(--muted); font-size: 12px; }
.seller-name { margin: 0; color: var(--accent-soft); font-weight: 800; }
.product-eyebrow, .article-box-kicker { margin: 0 0 6px; color: var(--accent); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .19em; }
h1 { margin: 0; color: var(--ink); font-family: "Cormorant Garamond", Georgia, serif; font-size: clamp(38px, 4vw, 56px); line-height: .99; letter-spacing: -.025em; text-wrap: balance; }
.product-subtitle { margin: 16px 0 23px; color: var(--muted); font-size: 14px; }
.price-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 24px; }
.price { color: var(--accent-soft); font-family: "Cormorant Garamond", Georgia, serif; font-size: 27px; font-weight: 700; }
.badge { border: 1px solid rgba(89,192,255,.3); border-radius: 999px; background: var(--surface-blue); padding: 5px 10px; color: #8fd5ff; font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.spec-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; margin: 0 0 25px; }
.spec-grid div { border: 1px solid rgba(127,175,218,.11); border-radius: 12px; background: rgba(8,25,49,.55); padding: 11px 12px; }
.spec-grid dt { color: #7f91a8; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; }
.spec-grid dd { margin: 3px 0 0; color: #e7eef8; font-size: 13px; font-weight: 700; }
.cta-group { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 18px; }
.button { display: inline-flex; justify-content: center; align-items: center; border: 1px solid var(--line); border-radius: 13px; padding: 12px 15px; min-height: 48px; font-size: 13px; font-weight: 800; text-align: center; transition: transform .2s, box-shadow .2s, border-color .2s, background .2s; }
.button:hover { transform: translateY(-2px); }
.button.primary { border-color: #f8bd4b; background: linear-gradient(135deg, #ffe49b, #e4921c 62%, #ffcb57); color: #10111a; box-shadow: 0 10px 30px rgba(225,143,24,.2); }
.button.primary:hover { box-shadow: 0 14px 38px rgba(248,189,75,.32); }
.button.secondary { border-color: rgba(111,190,247,.3); background: linear-gradient(145deg, #103660, #0a2243); color: #dbefff; }
.button.secondary:hover, .button.ghost:hover { border-color: var(--accent); }
.button.ghost { grid-column: 1 / -1; border-color: rgba(255,255,255,.08); background: rgba(255,255,255,.035); color: var(--muted); }
.button.ghost.is-saved { border-color: var(--accent); background: rgba(248,189,75,.1); color: var(--accent-soft); }
.service-note { margin: 0 0 22px; color: #8798ad; font-size: 12px; }
.accordion { border-top: 1px solid var(--line); }
.accordion-trigger { display: flex; justify-content: space-between; align-items: center; border: 0; border-bottom: 1px solid var(--line); background: transparent; padding: 15px 0; width: 100%; color: #eef3fa; font-size: 13px; font-weight: 700; text-align: left; }
.accordion-trigger span { display: grid; place-items: center; border: 1px solid rgba(248,189,75,.25); border-radius: 50%; width: 22px; height: 22px; color: var(--accent); }
.accordion-trigger span::before { content: "+"; }
.accordion-trigger[aria-expanded="true"] span::before { content: "−"; }
.accordion-panel { border-bottom: 1px solid var(--line); padding: 0 0 15px; color: var(--muted); font-size: 12px; }
.accordion-panel p { margin: 0; }

.article-box { position: relative; margin-top: 58px; overflow: hidden; border: 1px solid var(--line); border-radius: 28px; background: linear-gradient(150deg, rgba(10,28,52,.86), rgba(4,14,30,.92)); padding: clamp(24px, 4vw, 48px); max-width: 1040px; box-shadow: var(--shadow); }
.article-box::after { position: absolute; top: -110px; left: -100px; width: 280px; height: 280px; border-radius: 50%; background: radial-gradient(circle, rgba(248,189,75,.09), transparent 68%); content: ""; pointer-events: none; }
.article-box-header { position: relative; border-bottom: 1px solid var(--line); padding-bottom: 20px; margin-bottom: 22px; }
.article-box h2 { margin: 0; max-width: 760px; color: var(--ink); font-family: "Cormorant Garamond", Georgia, serif; font-size: clamp(29px, 4vw, 43px); line-height: 1.08; }
.article-box-body { position: relative; display: grid; gap: 30px; }
.article-box-body p { margin: 0; color: var(--muted); font-size: 15px; }
.article-box-body p a { color: var(--accent-soft); text-decoration: underline; text-decoration-color: rgba(248,189,75,.35); text-underline-offset: 3px; }
.article-box-body section { display: grid; gap: 12px; }
.article-box-body h3 { margin: 0; color: #f5ead3; font-family: "Cormorant Garamond", Georgia, serif; font-size: 25px; line-height: 1.2; }
.faq-list details { border-top: 1px solid var(--line); padding: 15px 0; }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { color: #eaf1fb; font-size: 14px; font-weight: 700; cursor: pointer; }
.faq-list summary::marker { color: var(--accent); }
.faq-list details p { margin-top: 9px; }
.review-list { grid-template-columns: repeat(2,minmax(0,1fr)); }
.review-list h3 { grid-column: 1 / -1; }
.review-list figure { position: relative; margin: 0; border: 1px solid rgba(248,189,75,.14); border-radius: 18px; background: linear-gradient(145deg, rgba(18,42,73,.62), rgba(7,23,45,.72)); padding: 20px; transition: transform .25s, border-color .25s; }
.review-list figure:hover { transform: translateY(-4px); border-color: rgba(248,189,75,.4); }
.review-list blockquote { margin: 0; color: #dce5f1; font-size: 13px; }
.review-list blockquote::before { display: block; margin-bottom: 4px; color: var(--accent); font-family: Georgia,serif; font-size: 30px; line-height: 1; content: "“"; }
.review-list figcaption { margin-top: 12px; color: var(--accent-soft); font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
.site-footer { display: flex; justify-content: space-between; gap: 20px; align-items: center; border-top: 1px solid var(--line); background: rgba(1,5,12,.52); padding: 26px clamp(18px,3vw,48px); color: #7f90a6; font-size: 12px; }
.site-footer p { margin: 0; }

.product-layout, .article-box { animation: section-arrival .75s cubic-bezier(.2,.8,.2,1) both; }
.article-box { animation-delay: .12s; }
@keyframes section-arrival {
  from { opacity: .01; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 1120px) {
  .site-header { grid-template-columns: 1fr auto; }
  .search { grid-column: 1 / -1; order: 3; }
  .header-nav { display: none; }
  .product-layout { grid-template-columns: 1fr; }
  .product-panel { position: static; }
  .gallery-main { max-height: 820px; }
}
@media (max-width: 760px) {
  body { line-height: 1.6; }
  .site-header { padding: 12px 16px; }
  .brand { min-width: 0; }
  .brand-logo { width: 104px; height: 40px; }
  .header-actions { gap: 6px; }
  .icon-button { padding: 8px 11px; }
  main { padding: 16px 16px 46px; }
  .breadcrumbs { margin-bottom: 16px; font-size: 10px; }
  .product-layout { gap: 22px; }
  .gallery-main { border-radius: 20px; }
  .gallery-nav { width: 38px; height: 38px; font-size: 26px; }
  .gallery-nav.previous { left: 10px; }
  .gallery-nav.next { right: 10px; }
  .thumbnail-strip { grid-template-columns: repeat(2, 92px); }
  .product-panel { border-radius: 20px; padding: 22px; }
  h1 { font-size: 39px; }
  .spec-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .article-box { margin-top: 32px; border-radius: 20px; }
  .review-list { grid-template-columns: 1fr; }
  .site-footer { flex-direction: column; align-items: flex-start; padding: 22px 16px; }
}
@media (max-width: 600px) {
  .site-header { grid-template-columns: 1fr auto; gap: 10px; }
  .search { grid-column: 1 / -1; }
  .header-actions { justify-content: flex-end; }
  .thumbnail-strip { grid-template-columns: repeat(2, 82px); }
  .cta-group { grid-template-columns: 1fr; }
  .button.ghost { grid-column: auto; }
  .site-footer nav { flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}