*{box-sizing:border-box}
:root{color-scheme:light;--ink:#10213c;--muted:#465872;--blue:#145af4;--line:#dce5f2}
body{margin:0;background:#f7f9fd;color:var(--ink);font-family:Arial,Helvetica,sans-serif;font-size:16px;font-weight:400;line-height:1.65}
a{color:#124fd1;text-decoration:none}button,input{font:inherit}[hidden]{display:none!important}
.container{width:100%;max-width:1540px;margin:auto;padding-inline:clamp(20px,3.5vw,56px)}
.site-header{border-bottom:1px solid var(--line);background:#fff}
.navigation{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{font-size:27px;font-weight:800;color:var(--ink);letter-spacing:-1px}.brand span{color:var(--blue)}
.nav-links{display:flex;gap:30px}.nav-links a{font-size:15px;font-weight:600;color:#344761}.nav-links a:hover{color:var(--blue)}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:9px;padding:24px 0;font-size:14px;color:var(--muted)}
.product-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,3vw,48px);align-items:start}
.artwork{border-radius:22px;overflow:hidden;background:#edf1f8;border:1px solid var(--line);box-shadow:0 12px 32px #1832520d}
.artwork img{display:block;width:100%;aspect-ratio:1;object-fit:contain}
.product-info{min-width:0;padding:28px;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:0 8px 28px #18325206}
.category{display:inline-block;padding:5px 12px;border-radius:8px;background:#eaf0ff;color:#1247b3;font-size:12px;font-weight:750;letter-spacing:.08em;text-transform:uppercase}
h1{font-size:clamp(28px,2.5vw,42px);font-weight:800;line-height:1.15;letter-spacing:-1.2px;margin:16px 0}
.summary{color:var(--muted);font-size:17px;line-height:1.7;margin:0 0 22px}
.pricing-panel{padding:20px 22px;border:1px solid #dbe6ff;border-radius:14px;background:#f3f7ff}
.prices{display:flex;align-items:center;flex-wrap:wrap;gap:16px;font-variant-numeric:tabular-nums}.prices strong{font-size:42px;font-weight:800;color:#1250d8;line-height:1.2;letter-spacing:-1px}.prices del{font-size:18px;font-weight:400;color:#42516a;text-decoration-thickness:1px}
.savings{display:inline-block;margin-top:10px;border-radius:7px;background:#e1f3e9;color:#116239;padding:6px 12px;font-size:16px;font-weight:600}
.availability{display:flex;gap:10px;padding:16px 0;margin:0;color:var(--ink)}.availability strong{font-size:15px;font-weight:700}.availability p{margin:2px 0 0;color:var(--muted);font-size:14px;line-height:1.5}.status-dot{flex-shrink:0;width:8px;height:8px;margin-top:9px;border-radius:50%;background:#426388}
.offer-timer{margin:0 0 20px;padding:16px 20px;border-radius:14px;background:#12264b;color:#fff}.offer-timer>strong{font-size:18px;font-weight:600;letter-spacing:0}
.timer-digits{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:10px}.timer-digits>div{text-align:center;padding:12px 8px;background:#ffffff12;border:1px solid #ffffff20;border-radius:8px}.timer-digits b{display:block;font-size:34px;font-weight:600;font-variant-numeric:tabular-nums;line-height:1.2}.timer-digits span{display:block;margin-top:6px;font-size:15px;font-weight:400;color:#fff}.offer-timer p{font-size:16px;font-weight:400;line-height:1.7;color:#fff;margin:14px 0 0;white-space:pre-line}
.actions{display:flex;gap:12px}.actions button,.actions .checkout-button{display:flex;align-items:center;justify-content:center;flex:1;min-height:56px;border-radius:12px;font-size:18px;font-weight:600;padding:12px 20px;text-align:center;cursor:pointer}
.actions .checkout-button{flex:2;background:var(--blue);color:#fff;box-shadow:0 5px 12px #145af425}.actions .checkout-button:hover{background:#0644c8}
.buy-button{border:1px solid var(--line);background:#edf0f5;color:#465872}.buy-button:disabled{cursor:not-allowed}.share-button{border:1px solid #c6d4ed;background:#fff;color:#1247b3}.share-button:hover{background:#edf3ff}
.share-status{font-size:14px;color:var(--muted);margin:12px 0}.share-status:empty{display:none}#share-url{width:100%;padding:10px;margin-top:12px;border:1px solid #ccd7e8;border-radius:8px}
.back-link{display:inline-block;margin-top:20px;font-size:16px;font-weight:500}.details{margin-top:32px;padding:30px;border:1px solid var(--line);border-radius:18px;background:#fff}.details h2{font-size:25px;line-height:1.3;margin:0 0 14px;letter-spacing:-.4px}.details p{margin:0;color:var(--muted);font-size:17px;line-height:1.85;max-width:950px}
.page-footer{margin-top:40px;padding-top:24px;padding-bottom:24px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}:focus-visible{outline:3px solid #6a9eff;outline-offset:4px}
@media(max-width:1000px){.product-layout{gap:24px}.product-info{padding:22px}.nav-links{gap:18px}.summary{font-size:16px}h1{font-size:30px}}
@media(max-width:760px){.navigation{flex-wrap:wrap;padding-block:14px;gap:8px}.nav-links{flex-wrap:wrap;gap:18px}.nav-links a{font-size:14px}.breadcrumbs{padding-block:20px}.product-layout{grid-template-columns:1fr}.product-info{padding:22px}.details{margin-top:24px;padding:22px}.prices strong{font-size:36px}h1{font-size:32px}.actions button,.actions .checkout-button{padding:12px;font-size:16px}}
@media(max-width:380px){.product-info{padding:18px}.container{padding-inline:16px}h1{font-size:28px}.pricing-panel{padding:16px}.prices{gap:12px}.offer-timer{padding:16px}.timer-digits{gap:6px}}
.availability[hidden]+.offer-timer{margin-top:20px}
#product-description{max-width:950px;color:var(--muted);font-size:17px;line-height:1.85}#product-description p{margin:0 0 18px}#product-description p:last-child{margin-bottom:0}#product-description h3{margin:26px 0 14px;color:var(--ink);font-size:21px;line-height:1.4}#product-description strong{color:var(--ink);font-weight:700}#product-description ul{padding-left:24px;margin:0 0 24px}#product-description li{padding-left:5px;margin-bottom:12px}#product-description li::marker{color:var(--blue)}
/* Readable article layout for product descriptions. */
.details{margin-top:40px;padding:clamp(24px,4vw,52px);border:1px solid #dce5f2;border-radius:22px;background:#fff;box-shadow:0 8px 28px #17305b05}
.details-heading,#product-description{width:100%;max-width:820px;margin-inline:auto}
.details-heading{padding-bottom:22px;margin-bottom:26px;border-bottom:1px solid #e3eaf4}
.details h2{font-size:clamp(26px,2.3vw,34px);line-height:1.25;letter-spacing:-.7px;margin:0}
#product-description{font-size:18px;line-height:1.85;color:#344761}
#product-description p{font-size:18px;line-height:1.85;margin:0 0 20px}
#product-description strong{color:#152b49;font-weight:600}
.guide-intro{display:block}
#product-description .guide-intro>p:first-child{font-size:20px;line-height:1.7;color:#152b49;margin-bottom:22px}
#product-description .guide-lessons h3{font-size:24px;line-height:1.35;letter-spacing:-.3px;margin:32px 0 18px}
#product-description .guide-lessons ul{display:block;list-style:disc;margin:0;padding-left:24px}
#product-description .guide-lessons li{padding:0 0 0 6px;margin:0 0 18px;font-size:18px;line-height:1.8}
#product-description .guide-lessons li::marker{color:#3767ac;font-size:.85em}
#product-description .guide-lessons li strong{display:block;margin-bottom:3px;color:#152b49;font-size:18px;font-weight:600;line-height:1.5}
.guide-closing{margin-top:30px;padding:22px 26px;border-left:3px solid #427be0;border-radius:0 12px 12px 0;background:#f2f6fd}
#product-description .guide-closing p{font-size:17px;line-height:1.8;margin:0 0 10px}
#product-description .guide-closing p:last-child{margin:0}
#product-description .guide-closing strong{font-size:20px;line-height:1.5;font-weight:600;color:#17375f}
#product-description .description-buy-button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;margin-top:18px;padding:12px 22px;border:1px solid #296cef;border-radius:10px;background:linear-gradient(120deg,#236bfa,#174cce);color:#fff;font-size:16px;font-weight:600;line-height:1.3;text-align:center;box-shadow:0 5px 14px #1b56d326;transition:transform .2s ease,box-shadow .2s ease}
@media(hover:hover) and (prefers-reduced-motion:no-preference){#product-description .description-buy-button:hover{transform:translateY(-2px);box-shadow:0 8px 18px #1b56d336}}
@media(max-width:700px){.details{padding:24px 20px;margin-top:28px;border-radius:16px}.details-heading{margin-bottom:22px;padding-bottom:18px}#product-description,#product-description p,#product-description .guide-lessons li{font-size:17px;line-height:1.8}#product-description .guide-intro>p:first-child{font-size:19px}.guide-closing{padding:18px 20px}}
/* Purchase panel: crisp typography, layered blue surfaces, and clear actions. */
.product-info{position:relative;isolation:isolate;padding:clamp(24px,2.2vw,36px);border:1px solid #dce5f4;border-radius:26px;background:radial-gradient(ellipse at 100% 0%,#eef4ff,transparent 45%),#fff;box-shadow:0 18px 48px #18345c0a}
.product-info::before{content:"";position:absolute;top:0;left:32px;right:32px;height:2px;background:linear-gradient(90deg,transparent,#669aff,transparent);border-radius:2px;pointer-events:none}
.product-heading-row{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}.product-edition{color:#596981;font-size:10px;font-weight:600;letter-spacing:.13em}.product-info .category{display:inline-flex;align-items:center;gap:7px;background:#eaf1ff;border:1px solid #d9e5ff;border-radius:999px;padding:6px 12px;font-size:11px;letter-spacing:.08em}.product-info .category::before{content:"";width:5px;height:5px;border-radius:50%;background:#3269d7}
.product-info h1{margin:22px 0 16px;font-size:clamp(30px,2.5vw,42px);line-height:1.16;letter-spacing:-1px;font-weight:700;color:#102442}.product-info .summary{color:#465872;font-size:17px;line-height:1.75;margin-bottom:26px}
.product-info .pricing-panel{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:8px 14px;padding:22px 24px;border:1px solid #d7e4ff;border-radius:18px;background:linear-gradient(115deg,#f0f5ff,#fafcff);box-shadow:inset 0 1px 0 #fff}.price-caption{grid-column:1/-1;color:#506582;font-size:11px;font-weight:700;letter-spacing:.14em}.product-info .prices{gap:12px}.product-info .prices strong{font-size:clamp(34px,3vw,46px);font-weight:700;letter-spacing:-1.4px;color:#144fc8}.product-info .prices del{font-size:16px;color:#56637b}.product-info .savings{margin:0;padding:8px 11px;background:#e4f4ec;border:1px solid #cce8d9;border-radius:10px;color:#17603e;font-size:14px;font-weight:600}
.product-info .offer-timer{position:relative;margin-bottom:22px;padding:20px 22px;border:1px solid #2c456b;border-radius:18px;background:radial-gradient(ellipse at top right,#284878,transparent 75%),#10213d;box-shadow:inset 0 1px 0 #ffffff12}.timer-heading{display:flex;align-items:center;gap:9px;font-size:16px!important;font-weight:500!important}.timer-heading svg{width:20px;height:20px;flex-shrink:0;color:#b8d2ff}.product-info .timer-digits{gap:14px;margin-top:16px}.product-info .timer-digits>div{position:relative;padding:12px 6px;border:1px solid #ffffff20;border-radius:12px;background:linear-gradient(180deg,#ffffff10,#ffffff05);box-shadow:inset 0 1px 0 #ffffff09}.product-info .timer-digits>div:not(:last-child)::after{content:":";position:absolute;right:-11px;top:18px;font-size:20px;color:#9ab2d5}.product-info .timer-digits b{font-size:36px;line-height:1.15;letter-spacing:1px;font-weight:500;color:#fff}.product-info .timer-digits span{font-size:13px;margin-top:6px;color:#e2ebfa}.product-info .offer-timer p{border-top:1px solid #ffffff20;padding-top:12px;margin-top:16px;font-size:14px;line-height:1.7;color:#e3ecfc}
.product-info .actions{gap:12px}.product-info .actions .checkout-button{min-height:58px;border:1px solid #296cef;background:linear-gradient(120deg,#236bfa,#174cce);box-shadow:inset 0 1px 0 #ffffff35,0 6px 16px #1b56d326;font-size:18px;font-weight:600;transition:transform .2s ease,box-shadow .2s ease}.product-info .share-button{flex:0 1 125px;min-height:58px;border-color:#d5e0f1;border-radius:12px;background:#f9fbff;color:#21487e;font-size:16px;font-weight:500}.product-info .back-link{font-size:14px;font-weight:500;color:#456286;margin-top:20px}
@media(hover:hover) and (prefers-reduced-motion:no-preference){.product-info .actions .checkout-button:hover{transform:translateY(-2px);box-shadow:inset 0 1px 0 #ffffff35,0 9px 20px #1b56d336}.product-info .share-button:hover{background:#edf3ff}}
@media(max-width:1100px){.product-info .pricing-panel{grid-template-columns:1fr}.product-info .savings{justify-self:start;margin-top:4px}.product-edition{font-size:9px;letter-spacing:.08em}}
@media(max-width:760px){.product-info{padding:24px}.product-info h1{font-size:32px}.product-info .pricing-panel{grid-template-columns:minmax(0,1fr) auto}.product-info .savings{margin:0}}
@media(max-width:460px){.product-heading-row{gap:10px}.product-edition{font-size:9px}.product-info{padding:20px}.product-info h1{font-size:29px}.product-info .pricing-panel{padding:18px;grid-template-columns:1fr}.product-info .savings{margin-top:4px}.product-info .offer-timer{padding:18px}.product-info .timer-digits b{font-size:30px}.product-info .timer-digits span{font-size:12px}.product-info .share-button{flex-basis:90px}.product-info .actions .checkout-button{font-size:17px}}

/* Compact product introduction on mobile. */
@media(max-width:750px){
  .product-info{padding:18px;border-radius:18px}
  .product-heading-row{gap:8px}
  .product-info .category{padding:4px 9px;font-size:9px;gap:5px}
  .product-info .product-edition{font-size:8px;letter-spacing:.05em}
  .product-info .product-title-group h1{margin:16px 0 10px;font-size:clamp(24px,6.4vw,30px);line-height:1.2;letter-spacing:-.6px;overflow-wrap:break-word}
  .product-info .product-title-group .product-rating{gap:5px;margin-bottom:12px}
  .product-info .product-rating strong,.product-info .rating-count{font-size:11px}
  .product-info .summary{font-size:14px;line-height:1.6;margin:0 0 18px}
  .details{padding:20px 18px;margin-top:22px;border-radius:16px}
  .details-heading{padding-bottom:14px;margin-bottom:18px}
  .details h2{font-size:22px;line-height:1.25;letter-spacing:-.4px}
  #product-description{font-size:14px;line-height:1.65;overflow-wrap:break-word}
  #product-description p{font-size:14px;line-height:1.65;margin-bottom:14px}
  #product-description .guide-intro>p:first-child{font-size:15px;line-height:1.65;margin-bottom:16px}
  #product-description h3,#product-description .guide-lessons h3{font-size:19px;line-height:1.35;margin:22px 0 12px}
  #product-description .guide-lessons ul{padding-left:18px}
  #product-description .guide-lessons li{padding-left:3px;margin-bottom:14px;font-size:14px;line-height:1.65}
  #product-description .guide-lessons li strong{font-size:14px;line-height:1.5;margin-bottom:2px}
  .guide-closing{margin-top:20px;padding:14px 16px}
  #product-description .guide-closing p{font-size:14px;line-height:1.65}
  #product-description .guide-closing strong{font-size:16px;line-height:1.5}
  #product-description .description-buy-button{width:100%;min-height:44px;font-size:14px;margin-top:14px;padding:10px 16px}
}