:root{
  --ink:#1a1530;
  --ink-soft:#4a4468;
  --bg:#fbf9ff;
  --bg-alt:#f1ecff;
  --purple-900:#241b45;
  --purple-800:#332757;
  --purple-700:#4a3a78;
  --purple-500:#7458c9;
  --gold:#e8b64f;
  --gold-soft:#f6d98a;
  --orange:#ff7a1a;
  --orange-deep:#e8590c;
  --white:#ffffff;
  --line:#e6e0f7;
  --shadow:0 20px 40px -20px rgba(36,27,69,.35);
  --radius:18px;
  --radius-sm:12px;
  --maxw:1120px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Be Vietnam Pro',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3{font-family:'Playfair Display',Georgia,serif;margin:0 0 .5em;line-height:1.2}
p{line-height:1.7;color:var(--ink-soft);margin:0 0 1em}
a{color:inherit;text-decoration:none}
ul{padding-left:1.2em;color:var(--ink-soft)}
li{margin-bottom:.4em;line-height:1.6}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.hidden{display:none !important}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  padding:14px 26px;border-radius:999px;font-weight:700;font-size:15px;
  border:2px solid transparent;cursor:pointer;transition:transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:linear-gradient(135deg,var(--gold-soft),var(--gold));color:var(--purple-900);box-shadow:0 10px 24px -8px rgba(232,182,79,.6)}
.btn-primary:hover{box-shadow:0 14px 30px -8px rgba(232,182,79,.75)}
.btn-lg{padding:17px 34px;font-size:16.5px}
.btn-ghost{background:transparent;color:var(--purple-800);border-color:var(--line)}
.btn-ghost:hover{background:var(--bg-alt)}
.btn-outline{background:#fff;color:var(--purple-800);border-color:var(--purple-500)}
.btn-outline:hover{background:var(--bg-alt)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(251,249,255,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--purple-900)}
.brand-mark{width:30px;height:30px;object-fit:contain;display:block}
.brand-text em{font-style:normal;color:var(--orange)}
.nav-desktop{display:flex;align-items:center;gap:28px;font-weight:600;font-size:14.5px;color:var(--ink-soft)}
.nav-desktop a:hover{color:var(--purple-800)}
.nav-cta{background:var(--purple-900);color:#fff !important;padding:10px 18px;border-radius:999px}
.nav-cta:hover{background:var(--purple-700);color:#fff !important}
@media (max-width:820px){
  .nav-desktop{display:none}
}

/* ---------- hero ---------- */
.hero{position:relative;padding:90px 0 70px;background:radial-gradient(circle at 20% 0%,#2b2154,var(--purple-900) 60%);overflow:hidden;color:#fff}
.hero-glow{position:absolute;inset:0;background:
  radial-gradient(400px 400px at 85% 10%, rgba(232,182,79,.25), transparent 60%),
  radial-gradient(500px 400px at 10% 90%, rgba(116,88,201,.35), transparent 60%);
  pointer-events:none}
.hero-inner{position:relative;text-align:center;max-width:780px}
.eyebrow{display:inline-block;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);padding:8px 16px;border-radius:999px;font-size:13.5px;font-weight:600;margin-bottom:22px;color:var(--gold-soft)}
.hero h1{font-size:clamp(32px,5.2vw,52px);color:#fff;margin-bottom:22px}
.grad-text{background:linear-gradient(135deg,var(--gold-soft),var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{color:#d8d2f0;font-size:17px;max-width:620px;margin:0 auto 34px}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:44px}
.hero-actions .btn-ghost{color:#fff;border-color:rgba(255,255,255,.35)}
.hero-actions .btn-ghost:hover{background:rgba(255,255,255,.08)}
.hero-stats{display:flex;justify-content:center;gap:46px;flex-wrap:wrap}
.hero-stats div{display:flex;flex-direction:column;align-items:center}
.hero-stats strong{font-size:22px;color:var(--gold-soft);font-family:'Playfair Display',serif}
.hero-stats span{font-size:13px;color:#bdb5dc;margin-top:2px}

/* ---------- sections ---------- */
.section{padding:84px 0}
.section-alt{background:var(--bg-alt)}
.section-head{text-align:center;max-width:680px;margin:0 auto 48px}
.tag{display:inline-block;background:var(--bg-alt);color:var(--purple-700);font-weight:700;font-size:12.5px;letter-spacing:.03em;padding:6px 14px;border-radius:999px;margin-bottom:14px}
.section-head h2{font-size:clamp(24px,3.4vw,34px);color:var(--purple-900)}
.section-sub{font-size:15.5px}

.grid{display:grid;gap:22px}
.grid-5{grid-template-columns:repeat(5,1fr)}
@media (max-width:980px){.grid-5{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.grid-5{grid-template-columns:1fr}}

.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 20px;text-align:left;transition:transform .2s ease, box-shadow .2s ease}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feature-ico{font-size:28px;margin-bottom:12px}
.feature-card h3{font-size:16.5px;font-family:'Be Vietnam Pro';font-weight:700;color:var(--purple-900);margin-bottom:6px}
.feature-card p{font-size:14px;margin:0}

/* ---------- tabs ---------- */
.tabs-nav{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:32px}
.tab-btn{background:#fff;border:1.5px solid var(--line);padding:10px 18px;border-radius:999px;font-weight:600;font-size:14px;cursor:pointer;color:var(--ink-soft);transition:all .15s ease}
.tab-btn:hover{border-color:var(--purple-500)}
.tab-btn.active{background:var(--purple-900);border-color:var(--purple-900);color:#fff}
.tab-panel{display:none;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:36px;max-width:720px;margin:0 auto;box-shadow:var(--shadow)}
.tab-panel.active{display:block;animation:fadeUp .35s ease}
.panel-ico{font-size:34px;margin-bottom:10px}
.tab-panel h3{color:var(--purple-900);font-size:22px}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* ---------- scan / upload ---------- */
.section-scan{background:linear-gradient(180deg,var(--bg-alt),var(--bg))}
.scan-box{max-width:640px;margin:0 auto;background:#fff;border-radius:24px;border:1px solid var(--line);box-shadow:var(--shadow);padding:36px;min-height:320px}
.upload-zone{border:2px dashed var(--purple-500);border-radius:var(--radius);padding:46px 24px;text-align:center;background:var(--bg-alt);transition:background .2s ease}
.upload-zone.dragover{background:#e6def8}
.upload-ico{font-size:44px;margin-bottom:12px}
.upload-title{font-weight:700;color:var(--purple-900);margin-bottom:20px}
.upload-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:16px}
.upload-hint{font-size:12.5px;color:#8a83a8;margin:0}

.camera-wrap{margin-top:20px;text-align:center}
.camera-wrap video{width:100%;border-radius:var(--radius);background:#000;max-height:380px;object-fit:cover}
.camera-actions{display:flex;gap:12px;justify-content:center;margin-top:16px}

#statePreview img{border-radius:var(--radius);max-height:420px;object-fit:contain;margin:0 auto 22px;background:#f4f1fb}
.preview-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

#stateLoading{text-align:center;padding:40px 0}
.loader{width:56px;height:56px;border-radius:50%;border:4px solid var(--bg-alt);border-top-color:var(--gold);margin:0 auto 22px;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.loading-text{font-weight:600;color:var(--purple-800)}

#stateError{text-align:center;padding:30px 0}
.error-ico{font-size:38px;margin-bottom:12px}

.result-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:28px}

/* result content (rendered by JS) */
.result-hero{text-align:center;margin-bottom:28px}
.result-hero h3{color:var(--purple-900);font-size:24px;margin-bottom:8px}
.result-tags{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-bottom:6px}
.result-tag{background:var(--bg-alt);color:var(--purple-700);font-size:12.5px;font-weight:700;padding:5px 12px;border-radius:999px}
.result-line{border:1px solid var(--line);border-radius:var(--radius-sm);padding:18px 20px;margin-bottom:14px;background:#fcfbff}
.result-line h4{margin:0 0 6px;color:var(--purple-900);font-size:15.5px;font-family:'Be Vietnam Pro';font-weight:700;display:flex;align-items:center;gap:8px}
.result-line p{margin:0;font-size:14.5px}
.result-summary{background:linear-gradient(135deg,#2b2154,var(--purple-800));color:#fff;border-radius:var(--radius);padding:24px;margin-bottom:22px}
.result-summary h4{color:var(--gold-soft);margin:0 0 8px;font-family:'Be Vietnam Pro';font-size:14px;letter-spacing:.03em;text-transform:uppercase}
.result-summary p{color:#e7e2fb;margin:0;font-size:15px}
.result-product{margin-top:22px;border:1.5px dashed var(--orange);background:#fff6ec;border-radius:var(--radius-sm);padding:18px 20px}
.result-product h4{margin:0 0 6px;color:var(--orange-deep);font-size:14.5px}
.result-product p{margin:0;font-size:14.5px;color:#6b4a1f}

/* ---------- Bases CTA ---------- */
.bases-cta{background:linear-gradient(120deg,var(--orange-deep),var(--orange) 60%,#ffb44d);color:#fff}
.bases-cta-inner{display:flex;align-items:center;gap:40px}
.bases-cta-text{flex:1}
.tag-bases{background:rgba(255,255,255,.2);color:#fff}
.bases-cta h2{color:#fff;font-size:clamp(22px,3vw,30px)}
.bases-cta p{color:#fff0e0}
.bases-cta strong{color:#fff}
.bases-links{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0 14px}
.store-pill{background:#fff;color:var(--orange-deep);font-weight:700;font-size:14px;padding:11px 18px;border-radius:999px;transition:transform .15s ease}
.store-pill:hover{transform:translateY(-2px)}
.bases-note{font-size:13.5px;color:#fff0e0;margin:0}
.bases-cta-visual{flex-shrink:0}
.bases-cta-visual img{width:120px;height:auto;filter:drop-shadow(0 10px 20px rgba(0,0,0,.25))}
@media (max-width:760px){.bases-cta-inner{flex-direction:column;text-align:center}.bases-links{justify-content:center}}

/* ---------- FAQ ---------- */
.faq-list{max-width:720px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;text-align:left;background:none;border:none;padding:20px 4px;font-weight:700;font-size:15.5px;color:var(--purple-900);cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-family:inherit}
.faq-q span{font-size:20px;color:var(--purple-500);transition:transform .2s ease}
.faq-item.open .faq-q span{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease}
.faq-a p{padding:0 4px 18px;font-size:14.5px;margin:0}
.faq-item.open .faq-a{max-height:220px}

/* ---------- footer ---------- */
.site-footer{background:var(--purple-900);color:#cfc8ec;padding:56px 0 0}
.footer-inner{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{max-width:320px}
.footer-logo{width:150px;height:auto}
.footer-brand p{color:#a89fcf;font-size:13.5px;margin-top:14px}
.footer-cols{display:flex;gap:56px;flex-wrap:wrap}
.footer-cols h4{color:#fff;font-size:14px;margin:0 0 14px}
.footer-cols a,.footer-cols p{display:block;color:#a89fcf;font-size:13.5px;margin-bottom:9px;text-decoration:none}
.footer-cols a:hover{color:#fff}
.footer-bottom{padding:20px 0;text-align:center}
.footer-bottom p{color:#8a80af;font-size:12.5px;margin:0}

@media (max-width:600px){
  .section{padding:60px 0}
  .scan-box{padding:22px;border-radius:18px}
  .tab-panel{padding:24px}
}