/* UPTECH Smart Shop marketing site */
:root {
  --font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --accent: #6366f1; --accent-2: #8b5cf6; --accent-3: #06b6d4; --gold: #f59e0b;
  --grad: linear-gradient(135deg, #6366f1 0%, #8b5cf6 55%, #06b6d4 120%);
  --grad-text: linear-gradient(90deg, #a5b4fc, #c4b5fd 50%, #67e8f9);
  --ease: cubic-bezier(.2,.8,.2,1); --radius: 20px;
}
:root, :root[data-theme="dark"] {
  color-scheme: dark; --bg: #0b0f1a; --bg-2: #0f1527; --text: #e8ecf5; --text-2: #b3bdd3; --muted: #7f8aa6;
  --surface: rgba(255,255,255,.045); --surface-2: rgba(255,255,255,.08); --border: rgba(255,255,255,.09); --border-2: rgba(255,255,255,.16);
  --shadow: 0 20px 60px rgba(0,0,0,.45); --gloss: linear-gradient(180deg, rgba(255,255,255,.09), rgba(255,255,255,0) 50%);
  --blob-1: rgba(99,102,241,.38); --blob-2: rgba(6,182,212,.24); --blob-3: rgba(236,72,153,.18); --nav: rgba(11,15,26,.7);
}
:root[data-theme="light"] {
  color-scheme: light; --bg: #eef1f8; --bg-2: #ffffff; --text: #0f172a; --text-2: #3b4760; --muted: #64748b;
  --surface: rgba(255,255,255,.75); --surface-2: rgba(255,255,255,.95); --border: rgba(15,23,42,.08); --border-2: rgba(15,23,42,.16);
  --shadow: 0 20px 60px rgba(15,23,42,.12); --gloss: linear-gradient(180deg, rgba(255,255,255,.8), rgba(255,255,255,0) 60%);
  --grad-text: linear-gradient(90deg, #4f46e5, #7c3aed 50%, #0891b2);
  --blob-1: rgba(99,102,241,.25); --blob-2: rgba(6,182,212,.2); --blob-3: rgba(236,72,153,.12); --nav: rgba(238,241,248,.75);
}
* { box-sizing: border-box; } [hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; font-family: var(--font); font-size: 16px; line-height: 1.55; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
body::before { content: ""; position: fixed; inset: 0; z-index: -1; background: radial-gradient(1000px 600px at 10% -10%, var(--blob-1), transparent 60%), radial-gradient(900px 600px at 100% 15%, var(--blob-2), transparent 60%), radial-gradient(800px 600px at 50% 110%, var(--blob-3), transparent 60%), var(--bg); }
a { color: inherit; text-decoration: none; } img { max-width: 100%; height: auto; display: block; }
h1, h2, h3 { margin: 0; letter-spacing: -.02em; line-height: 1.12; }
h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 750; text-align: center; }
h3 { font-size: 17px; font-weight: 700; }
p { margin: 0; } .muted { color: var(--muted); } .num { font-variant-numeric: tabular-nums; }
.wrap { width: min(1180px, 100% - 40px); margin: 0 auto; } .wrap.narrow { max-width: 820px; }
.skip { position: absolute; left: -999px; top: 0; } .skip:focus { left: 16px; top: 16px; background: var(--bg-2); padding: 10px; z-index: 100; border-radius: 8px; }
.grad { background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
svg { width: 1em; height: 1em; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: none; }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 9px; height: 42px; padding: 0 18px; border-radius: 12px; font-weight: 650; font-size: 15px; border: 1px solid var(--border-2); background: var(--surface-2); color: var(--text); transition: transform .18s var(--ease), box-shadow .2s, filter .2s; box-shadow: inset 0 1px 0 rgba(255,255,255,.12); white-space: nowrap; cursor: pointer; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0,0,0,.2), inset 0 1px 0 rgba(255,255,255,.14); }
.btn-primary { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 8px 22px rgba(99,102,241,.4), inset 0 1px 0 rgba(255,255,255,.35); } .btn-primary:hover { filter: brightness(1.07); box-shadow: 0 14px 30px rgba(99,102,241,.5), inset 0 1px 0 rgba(255,255,255,.35); }
.btn-gold { background: linear-gradient(135deg, #f59e0b, #f97316); color: #fff; border-color: transparent; box-shadow: 0 8px 22px rgba(245,158,11,.35), inset 0 1px 0 rgba(255,255,255,.35); }
.btn-ghost { background: transparent; } .btn-sm { height: 36px; padding: 0 14px; font-size: 14px; } .btn-lg { height: 50px; padding: 0 24px; font-size: 16px; border-radius: 14px; }
.btn svg { width: 18px; height: 18px; }
.icon-btn { width: 38px; height: 38px; border-radius: 11px; border: 1px solid var(--border); background: var(--surface); color: var(--text-2); display: grid; place-items: center; cursor: pointer; } .icon-btn svg { width: 18px; height: 18px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; } .cta-row.center { justify-content: center; }

/* nav */
.nav { position: sticky; top: 0; z-index: 50; background: var(--nav); backdrop-filter: blur(18px) saturate(140%); border-bottom: 1px solid var(--border); }
.nav-in { display: flex; align-items: center; gap: 20px; height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; letter-spacing: -.01em; }
.brand-mark { width: 32px; height: 32px; border-radius: 10px; background: var(--grad); color: #fff; display: grid; place-items: center; font-size: 14px; box-shadow: 0 6px 14px rgba(99,102,241,.45), inset 0 1px 0 rgba(255,255,255,.4); }
.nav-links { display: flex; gap: 4px; margin-left: 10px; } .nav-links a { padding: 8px 12px; border-radius: 9px; font-size: 14px; font-weight: 550; color: var(--text-2); } .nav-links a:hover { background: var(--surface-2); color: var(--text); }
.nav-actions { margin-left: auto; display: flex; gap: 10px; align-items: center; }
@media (max-width: 960px) { .nav-links { display: none; } }

/* hero */
.hero { padding: 72px 0 40px; } .hero-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 44px; align-items: center; }
.eyebrow { font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-3); margin-bottom: 16px; }
h1 { font-size: clamp(32px, 3.8vw, 50px); font-weight: 800; margin-bottom: 20px; }
.lede { font-size: 18px; color: var(--text-2); margin-bottom: 26px; max-width: 560px; } .lede strong { color: var(--text); }
.facts { list-style: none; padding: 0; margin: 28px 0 0; display: flex; gap: 22px; flex-wrap: wrap; } .facts li { font-size: 14px; color: var(--muted); } .facts strong { display: block; font-size: 24px; color: var(--text); font-weight: 800; letter-spacing: -.02em; }
.hero-shot { margin: 0; position: relative; }
.window { border-radius: 18px; overflow: hidden; border: 1px solid var(--border-2); box-shadow: var(--shadow); background: var(--bg-2); transform: perspective(1400px) rotateY(-6deg) rotateX(2deg); transition: transform .6s var(--ease); }
.hero-shot:hover .window { transform: perspective(1400px) rotateY(-2deg); }
.window-bar { display: flex; align-items: center; gap: 7px; height: 36px; padding: 0 14px; background: var(--surface-2); border-bottom: 1px solid var(--border); font-size: 12px; color: var(--muted); } .window-bar i { width: 11px; height: 11px; border-radius: 50%; background: #ef4444; } .window-bar i:nth-child(2) { background: #f59e0b; } .window-bar i:nth-child(3) { background: #22c55e; } .window-bar span { margin-left: 8px; }
.float { position: absolute; display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-radius: 14px; background: var(--surface-2); border: 1px solid var(--border-2); backdrop-filter: blur(16px); box-shadow: var(--shadow); font-size: 13px; animation: floaty 6s ease-in-out infinite; }
.float svg { width: 22px; height: 22px; color: var(--accent-3); } .float .muted { font-size: 12px; }
.f1 { left: -30px; top: 24px; flex-direction: column; align-items: flex-start; gap: 2px; } .f2 { right: -20px; top: 44%; animation-delay: -2s; } .f3 { left: 10%; bottom: -18px; animation-delay: -4s; }
.float-label { font-size: 11.5px; color: var(--muted); font-weight: 600; } .float-value { font-size: 22px; font-weight: 800; } .float-sub { font-size: 11.5px; } .up { color: #22c55e; }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@media (max-width: 960px) { .hero-grid { grid-template-columns: 1fr; } .hero { padding-top: 40px; } .float { display: none; } .window { transform: none; } }

/* promises strip */
.promises { padding: 10px 0 20px; } .promises ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.promises li { padding: 18px 16px; border-radius: 16px; background: var(--surface); border: 1px solid var(--border); backdrop-filter: blur(14px); display: flex; flex-direction: column; gap: 6px; position: relative; overflow: hidden; }
.promises li::before { content: ""; position: absolute; inset: 0; background: var(--gloss); opacity: .6; pointer-events: none; }
.promises svg { width: 26px; height: 26px; color: var(--accent-3); margin-bottom: 4px; } .promises b { font-size: 15px; } .promises span { font-size: 13px; color: var(--muted); }
@media (max-width: 1000px) { .promises ul { grid-template-columns: repeat(2, 1fr); } } @media (max-width: 560px) { .promises ul { grid-template-columns: 1fr; } }

/* sections */
.section { padding: 80px 0; } .sub { text-align: center; color: var(--text-2); font-size: 17px; max-width: 720px; margin: 14px auto 40px; } .sub.left { text-align: left; margin-left: 0; }
.tour-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; } @media (max-width: 900px) { .tour-grid { grid-template-columns: 1fr 1fr; } } @media (max-width: 580px) { .tour-grid { grid-template-columns: 1fr; } }
.shot { margin: 0; border-radius: 16px; overflow: hidden; background: var(--surface); border: 1px solid var(--border); cursor: zoom-in; transition: transform .25s var(--ease), box-shadow .25s; }
.shot:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--border-2); }
.shot img { aspect-ratio: 16 / 9; object-fit: cover; object-position: top; width: 100%; }
.shot figcaption { padding: 12px 14px 14px; font-size: 13.5px; color: var(--muted); } .shot figcaption b { display: block; color: var(--text); font-size: 15px; margin-bottom: 2px; }
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; } @media (max-width: 900px) { .feat-grid { grid-template-columns: 1fr 1fr; } } @media (max-width: 560px) { .feat-grid { grid-template-columns: 1fr; } }
.feat-grid article { padding: 22px; border-radius: 18px; background: var(--surface); border: 1px solid var(--border); backdrop-filter: blur(14px); position: relative; overflow: hidden; transition: transform .25s var(--ease), border-color .2s; }
.feat-grid article::before { content: ""; position: absolute; inset: 0; background: var(--gloss); opacity: .5; pointer-events: none; }
.feat-grid article:hover { transform: translateY(-3px); border-color: var(--border-2); }
.feat-grid svg { width: 34px; height: 34px; padding: 7px; border-radius: 11px; background: var(--grad); color: #fff; box-shadow: 0 8px 18px rgba(99,102,241,.4), inset 0 1px 0 rgba(255,255,255,.35); margin-bottom: 14px; }
.feat-grid h3 { margin-bottom: 8px; } .feat-grid p { font-size: 14.5px; color: var(--text-2); }

/* sheet section */
.sheet-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 50px; align-items: center; } .sheet-grid h2 { text-align: left; }
@media (max-width: 900px) { .sheet-grid { grid-template-columns: 1fr; } .sheet-grid h2 { text-align: center; } .sheet-grid .sub.left { text-align: center; margin: 14px auto 30px; } }
.ticks { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 14px; } .ticks li { display: flex; gap: 12px; align-items: flex-start; font-size: 15.5px; color: var(--text-2); } .ticks b { color: var(--text); }
.ticks svg { width: 24px; height: 24px; padding: 5px; border-radius: 50%; background: var(--grad); color: #fff; flex: none; margin-top: 1px; }
.ticks.compact li { font-size: 14.5px; }
.diagram { margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; position: relative; padding-bottom: 10px; }
.node { padding: 16px 12px; border-radius: 16px; background: var(--surface); border: 1px solid var(--border); text-align: center; display: flex; flex-direction: column; align-items: center; gap: 4px; backdrop-filter: blur(14px); }
.node svg { width: 28px; height: 28px; color: var(--accent-3); margin-bottom: 4px; } .node b { font-size: 14px; } .node span { font-size: 12px; color: var(--muted); } .node em { font-style: normal; font-size: 11.5px; color: var(--accent-3); margin-top: 4px; }
.link { grid-column: 1 / -1; height: 44px; background: linear-gradient(var(--accent-3), var(--accent-3)) no-repeat center / 2px 100%; position: relative; } .link::before, .link::after { content: ""; position: absolute; top: 0; bottom: 0; width: 2px; background: var(--accent-3); opacity: .6; } .link::before { left: 16.6%; } .link::after { right: 16.6%; }
.sheetnode { grid-column: 1 / -1; padding: 22px; background: linear-gradient(135deg, rgba(99,102,241,.2), rgba(6,182,212,.15)); border-color: rgba(99,102,241,.4); } .sheetnode svg { width: 36px; height: 36px; color: #22c55e; }
.diagram-note { grid-column: 1 / -1; font-size: 13px; color: var(--muted); text-align: center; margin-top: 6px; }

/* why */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; } @media (max-width: 900px) { .why-grid { grid-template-columns: 1fr 1fr; } } @media (max-width: 520px) { .why-grid { grid-template-columns: 1fr; } }
.why-grid article { padding: 26px 22px; border-radius: 18px; background: var(--surface); border: 1px solid var(--border); text-align: center; backdrop-filter: blur(14px); }
.why-grid .big { display: block; font-size: 40px; font-weight: 800; letter-spacing: -.03em; background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; } .why-grid h3 { margin: 4px 0 10px; } .why-grid p { font-size: 14px; color: var(--text-2); }

/* themes */
.theme-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; } @media (max-width: 760px) { .theme-pair { grid-template-columns: 1fr; } }

/* how */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: s; } @media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } } @media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }
.steps li { padding: 22px; border-radius: 18px; background: var(--surface); border: 1px solid var(--border); } .steps li span { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--grad); color: #fff; font-weight: 800; margin-bottom: 12px; box-shadow: 0 6px 14px rgba(99,102,241,.4); }
.steps b { display: block; font-size: 16px; margin-bottom: 6px; } .steps p { font-size: 14px; color: var(--text-2); }
.center-note { text-align: center; color: var(--text-2); margin-top: 28px; font-size: 15px; }

/* package */
.pkg-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; } .pkg-grid h2 { text-align: left; } @media (max-width: 900px) { .pkg-grid { grid-template-columns: 1fr; } .pkg-grid h2 { text-align: center; } .pkg-grid .sub.left { text-align: center; margin: 14px auto 30px; } }
.pkg-card { border-radius: 18px; border: 1px solid var(--border-2); background: var(--surface); backdrop-filter: blur(14px); overflow: hidden; } .pkg-row { display: grid; grid-template-columns: 150px 1fr; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--border); font-size: 14px; } .pkg-row:last-child { border-bottom: 0; } .pkg-row b { color: var(--muted); font-weight: 600; } .pkg-row span { color: var(--text); }

/* pricing */
.price-card { max-width: 560px; margin: 0 auto; padding: 36px; border-radius: 24px; background: var(--surface); border: 1px solid var(--border-2); backdrop-filter: blur(18px); text-align: center; box-shadow: var(--shadow); position: relative; overflow: hidden; }
.price-card::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(99,102,241,.22), rgba(6,182,212,.12)); pointer-events: none; }
.price-card > * { position: relative; } .price-eyebrow { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; font-weight: 700; color: var(--accent-3); } .price { font-size: 48px; font-weight: 800; letter-spacing: -.03em; margin: 8px 0 4px; } .price-sub { color: var(--muted); margin-bottom: 22px; }
.price-card .ticks { align-items: center; margin-bottom: 26px; } .price-card .ticks li { justify-content: center; }

/* faq */
details { border: 1px solid var(--border); border-radius: 14px; background: var(--surface); margin-bottom: 10px; padding: 0 18px; } summary { cursor: pointer; font-weight: 650; padding: 16px 0; list-style: none; display: flex; justify-content: space-between; align-items: center; } summary::after { content: "+"; font-size: 20px; color: var(--muted); } details[open] summary::after { content: "–"; } details p { padding: 0 0 16px; color: var(--text-2); font-size: 15px; }

/* closing */
.closing { padding: 90px 0 80px; text-align: center; } .closing h2 { font-size: clamp(30px, 4.5vw, 46px); } .closing p { color: var(--text-2); font-size: 18px; margin: 14px 0 28px; } .contact { font-size: 14px; color: var(--muted); margin-top: 18px; }
.foot { border-top: 1px solid var(--border); padding: 22px 0; font-size: 13.5px; color: var(--muted); } .foot-in { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; } .foot nav { display: flex; gap: 16px; } .foot nav a:hover { color: var(--text); }

/* lightbox */
.lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(5,8,16,.9); backdrop-filter: blur(8px); display: grid; place-items: center; padding: 24px; } .lightbox[hidden] { display: none; }
.lightbox img { max-width: min(1600px, 94vw); max-height: 84vh; border-radius: 12px; box-shadow: 0 30px 90px rgba(0,0,0,.6); }
.lightbox button { position: absolute; width: 46px; height: 46px; border-radius: 50%; border: 1px solid rgba(255,255,255,.2); background: rgba(255,255,255,.1); color: #fff; display: grid; place-items: center; cursor: pointer; } .lightbox button svg { width: 22px; height: 22px; }
.lb-close { top: 20px; right: 20px; } .lb-prev { left: 20px; top: 50%; } .lb-next { right: 20px; top: 50%; } .lb-cap { position: absolute; bottom: 22px; color: #cbd5e1; font-size: 14px; text-align: center; }
@media (prefers-reduced-motion: reduce) { .float { animation: none; } html { scroll-behavior: auto; } }