/* ==========================================================================
   SPK STUDIO — MU Online Store (all-new design)
   Light premium corporate · Royal violet + Gold · Top navigation
   ========================================================================== */
:root {
  --ink: #1c1a14;
  --ink-2: #4a463a;
  --muted: #7a7566;
  --line: #e9e4d4;
  --bg: #faf8f2;
  --card: #ffffff;
  --violet: #c8962e;
  --violet-2: #e6b84a;
  --violet-dark: #1a1812;
  --gold: #e9b949;
  --gold-2: #ffe08a;
  --ok: #12a37f;
  --radius: 18px;
  --shadow: 0 10px 30px -12px rgba(40, 30, 5, .18);
  --shadow-lg: 0 30px 70px -25px rgba(40, 30, 5, .35);
  --font: 'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;
  --font-head: 'Sora', 'Plus Jakarta Sans', sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { font-family: var(--font); background: var(--bg); color: var(--ink); line-height: 1.65; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
[hidden] { display: none !important; }
h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.2; letter-spacing: -.02em; }
.container { width: min(1200px, 92%); margin: 0 auto; }

/* ---------- Announcement + Header ---------- */
.topbar { background: var(--violet-dark); color: #e7e8ec; font-size: .82rem; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 8px 0; flex-wrap: wrap; }
.topbar b { color: var(--gold-2); }
.topbar-links { display: flex; gap: 18px; }
.topbar-links a:hover { color: var(--gold-2); }

.header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.88); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark { width: 42px; height: 42px; border-radius: 12px; background: linear-gradient(135deg, var(--violet), var(--violet-2)); display: grid; place-items: center; color: #fff; box-shadow: 0 8px 18px -6px rgba(200,150,46,.7); }
.logo-mark svg { width: 22px; height: 22px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-text small { font-size: .66rem; letter-spacing: .2em; color: var(--muted); font-weight: 700; }
.logo-text strong { font-family: var(--font-head); font-size: 1.15rem; }
.logo-text strong span { color: var(--violet); }
.nav { display: flex; gap: 6px; }
.nav a { padding: 8px 14px; border-radius: 10px; font-weight: 600; font-size: .92rem; color: var(--ink-2); transition: .2s; }
.nav a:hover, .nav a.active { background: #f6efd8; color: var(--violet); }
.header-cta { display: flex; gap: 10px; align-items: center; }
.burger { display: none; width: 42px; height: 42px; border-radius: 10px; border: 1px solid var(--line); font-size: 1.3rem; }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 24px; border-radius: 12px; font-weight: 700; font-size: .95rem; transition: transform .2s, box-shadow .2s, background .2s; white-space: nowrap; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: linear-gradient(135deg, var(--violet), var(--violet-2)); color: #fff; box-shadow: 0 12px 24px -10px rgba(200,150,46,.7); }
.btn-primary:hover { box-shadow: 0 18px 30px -10px rgba(200,150,46,.8); }
.btn-gold { background: linear-gradient(135deg, var(--gold), var(--gold-2)); color: #3a2800; box-shadow: 0 12px 24px -10px rgba(233,185,73,.8); }
.btn-ghost { border: 1.5px solid var(--line); background: #fff; color: var(--ink); }
.btn-ghost:hover { border-color: var(--violet); color: var(--violet); }
.btn-light { background: rgba(255,255,255,.12); color: #fff; border: 1px solid rgba(255,255,255,.35); }
.btn-light:hover { background: rgba(255,255,255,.22); }
.btn-block { width: 100%; }

/* ---------- Hero ---------- */
.hero { position: relative; color: #fff; overflow: hidden; background: #14130f; }
.hero-bg { position: absolute; inset: 0; background: url('class/back1.jpg') center/cover; opacity: .28; }
.hero::before { content: ''; position: absolute; inset: 0; background: radial-gradient(700px 400px at 85% 20%, rgba(230,184,74,.55), transparent 60%), radial-gradient(600px 400px at 0% 100%, rgba(233,185,73,.22), transparent 60%), linear-gradient(120deg, #14130f 25%, rgba(40,30,5,.7)); }
.hero .container { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; padding: 84px 0 96px; }
.pill { display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2); font-size: .8rem; font-weight: 600; }
.pill i { width: 8px; height: 8px; border-radius: 50%; background: #34e0a1; box-shadow: 0 0 0 4px rgba(52,224,161,.25); animation: pulse 2s infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 8px rgba(52,224,161,0); } }
.hero h1 { font-size: clamp(2.2rem, 4.6vw, 3.8rem); margin: 20px 0; font-weight: 800; }
.hero h1 em { font-style: normal; background: linear-gradient(90deg, var(--gold-2), #fff3c9); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { color: #d6d8de; font-size: 1.08rem; max-width: 560px; }
.hero-actions { display: flex; gap: 14px; margin: 32px 0; flex-wrap: wrap; }
.hero-trust { display: flex; gap: 28px; flex-wrap: wrap; color: #c9ccd3; font-size: .88rem; }
.hero-trust b { display: block; color: #fff; font-family: var(--font-head); font-size: 1.5rem; }
.hero-visual { position: relative; }
.hero-visual .frame { border-radius: 24px; overflow: hidden; border: 1px solid rgba(255,255,255,.25); box-shadow: var(--shadow-lg); transform: rotate(1.5deg); background: #000; }
.hero-visual .frame img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.float-card { position: absolute; background: #fff; color: var(--ink); border-radius: 14px; padding: 12px 16px; box-shadow: var(--shadow-lg); display: flex; gap: 10px; align-items: center; font-size: .82rem; font-weight: 700; animation: floaty 5s ease-in-out infinite; }
.float-card span.ico { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: #f6efd8; color: var(--violet); font-size: 1.1rem; }
.float-card.a { left: -28px; bottom: 38px; }
.float-card.b { right: -14px; top: -18px; animation-delay: -2.5s; }
@keyframes floaty { 50% { transform: translateY(-10px); } }

/* ---------- Trust strip ---------- */
.strip { background: #fff; border-bottom: 1px solid var(--line); }
.strip .container { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding: 26px 0; }
.strip-item { display: flex; gap: 14px; align-items: center; }
.strip-item .ico { width: 48px; height: 48px; border-radius: 14px; background: #f8f2de; color: var(--violet); display: grid; place-items: center; flex-shrink: 0; }
.strip-item svg { width: 24px; height: 24px; }
.strip-item b { display: block; font-size: .95rem; }
.strip-item small { color: var(--muted); font-size: .8rem; }

/* ---------- Section frame ---------- */
section { padding: 88px 0; }
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.eyebrow { display: inline-block; font-size: .78rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; color: var(--violet); background: #f6efd8; padding: 5px 14px; border-radius: 999px; margin-bottom: 14px; }
.sec-head h2 { font-size: clamp(1.7rem, 3vw, 2.5rem); font-weight: 800; }
.sec-head p { color: var(--muted); margin-top: 12px; }
.dark { background: #14130f; color: #fff; }
.dark .sec-head p { color: #c9ccd3; }
.dark .eyebrow { background: rgba(255,255,255,.12); color: var(--gold-2); }

/* ---------- Products ---------- */
.products { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; align-items: stretch; }
.product { position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px; display: flex; flex-direction: column; box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s, border-color .3s; }
.product:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: var(--violet-2); }
.product.best { border: 2px solid var(--violet); background: linear-gradient(180deg, #fdfaf0, #fff 40%); }
.ribbon { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: linear-gradient(135deg, var(--gold), var(--gold-2)); color: #3a2800; font-size: .72rem; font-weight: 800; padding: 5px 14px; border-radius: 999px; letter-spacing: .06em; white-space: nowrap; }
.p-tag { font-size: .72rem; font-weight: 800; letter-spacing: .12em; color: var(--violet); text-transform: uppercase; }
.product h3 { font-size: 1.3rem; margin: 6px 0 4px; }
.p-sub { color: var(--muted); font-size: .85rem; min-height: 40px; }
.plats { display: flex; gap: 6px; flex-wrap: wrap; margin: 16px 0; }
.plat { font-size: .72rem; font-weight: 700; padding: 4px 10px; border-radius: 8px; background: #f1efe7; color: var(--ink-2); }
.price { font-family: var(--font-head); font-size: 2.3rem; font-weight: 800; margin: 4px 0 2px; }
.price small { font-size: .85rem; color: var(--muted); font-weight: 600; }
.price.contact { font-size: 1.6rem; color: var(--violet); }
.p-list { margin: 18px 0 24px; display: grid; gap: 10px; flex: 1; font-size: .88rem; color: var(--ink-2); }
.p-list li { display: flex; gap: 10px; align-items: flex-start; }
.p-list li::before { content: '✓'; flex-shrink: 0; width: 20px; height: 20px; margin-top: 2px; border-radius: 50%; background: #e3f7ef; color: var(--ok); font-weight: 800; font-size: .72rem; display: grid; place-items: center; }
.p-list li.star::before { content: '★'; background: #fff3cc; color: #c28a00; }
.p-note { font-size: .74rem; color: var(--muted); text-align: center; margin-top: 12px; }

/* ---------- Downloads ---------- */
.dl-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 18px; }
.dl-card { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.16); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; gap: 12px; transition: .3s; backdrop-filter: blur(8px); }
.dl-card:hover { background: rgba(255,255,255,.12); transform: translateY(-5px); }
.dl-card h3 { font-size: 1.1rem; display: flex; align-items: center; gap: 10px; }
.dl-card h3 .ico { width: 36px; height: 36px; border-radius: 10px; background: rgba(255,255,255,.14); display: grid; place-items: center; font-size: 1.1rem; }
.dl-card p { color: #c9ccd3; font-size: .82rem; }
.dl-btn { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 12px 16px; border-radius: 12px; font-weight: 700; font-size: .88rem; background: #fff; color: var(--ink); transition: .2s; }
.dl-btn:hover { background: var(--gold-2); transform: translateX(3px); }
.dl-btn small { font-weight: 600; color: var(--muted); font-size: .72rem; display: block; }
.dl-btn.alt { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.35); }
.dl-btn.alt small { color: #c9ccd3; }
.dl-btn.alt:hover { background: rgba(255,255,255,.14); }
.dl-views.bump { animation: bump .45s; display: inline-block; }
@keyframes bump { 40% { transform: scale(1.35); } }
.dl-file { display: block; font-size: .68rem; opacity: .7; max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dl-file:empty { display: none; }
.tf-link { font-size: .78rem; color: var(--gold-2); text-decoration: underline; text-underline-offset: 3px; text-align: left; }
.dl-note { text-align: center; margin-top: 22px; color: #a2a5ad; font-size: .8rem; }

/* ---------- Features ---------- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; transition: .3s; }
.feature:hover { box-shadow: var(--shadow-lg); transform: translateY(-5px); }
.feature .ico { width: 54px; height: 54px; border-radius: 16px; background: linear-gradient(135deg, #f6efd8, #f9f0d4); display: grid; place-items: center; font-size: 1.5rem; margin-bottom: 16px; }
.feature h3 { font-size: 1.1rem; margin-bottom: 8px; }
.feature p { color: var(--muted); font-size: .9rem; }

/* ---------- Classes ---------- */
.classes { display: grid; grid-template-columns: 340px 1fr; gap: 34px; align-items: stretch; background: #fff; border: 1px solid var(--line); border-radius: 26px; padding: 28px; box-shadow: var(--shadow); }
.class-tabs { display: flex; flex-direction: column; gap: 8px; }
.class-tab { display: flex; align-items: center; gap: 14px; padding: 10px 14px; border-radius: 14px; border: 1px solid transparent; text-align: left; font-weight: 700; transition: .2s; }
.class-tab img { width: 46px; height: 46px; border-radius: 12px; object-fit: cover; background: #f8f2de; }
.class-tab:hover { background: #faf5e6; }
.class-tab.active { background: linear-gradient(90deg, #f6efd8, #fff); border-color: var(--violet-2); color: var(--violet); }
.class-view { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: center; background: radial-gradient(circle at 30% 40%, #1a1812, #14130f); border-radius: 20px; padding: 30px; color: #fff; }
.class-view img { max-height: 380px; margin: 0 auto; filter: drop-shadow(0 20px 30px rgba(0,0,0,.5)); animation: floaty 6s ease-in-out infinite; }
.class-view .role { display: inline-block; font-size: .74rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: #3a2800; background: var(--gold-2); padding: 4px 12px; border-radius: 999px; }
.class-view h3 { font-size: 2rem; margin: 12px 0; }
.class-view p { color: #d6d8de; font-size: .95rem; margin-bottom: 20px; }
.bar { margin-bottom: 12px; font-size: .78rem; font-weight: 700; color: #c9ccd3; }
.bar div { height: 8px; background: rgba(255,255,255,.12); border-radius: 8px; margin-top: 5px; overflow: hidden; }
.bar div i { display: block; height: 100%; border-radius: 8px; background: linear-gradient(90deg, var(--gold), #fff3c9); transition: width .7s cubic-bezier(.16,1,.3,1); }

/* ---------- Videos ---------- */
.video-wrap { display: grid; grid-template-columns: 1fr 300px; gap: 24px; }
.video-main { border-radius: var(--radius); overflow: hidden; background: #000; box-shadow: var(--shadow-lg); aspect-ratio: 16/9; }
.video-main iframe { width: 100%; height: 100%; border: 0; }
.video-list { display: flex; flex-direction: column; gap: 10px; }
.video-item { display: flex; gap: 12px; align-items: center; padding: 14px; border-radius: 14px; border: 1px solid var(--line); background: #fff; text-align: left; transition: .2s; }
.video-item:hover { border-color: var(--violet-2); }
.video-item.active { background: #f6efd8; border-color: var(--violet); }
.video-item .play { width: 38px; height: 38px; border-radius: 50%; background: var(--violet); color: #fff; display: grid; place-items: center; flex-shrink: 0; font-size: .8rem; }
.video-item b { display: block; font-size: .9rem; }
.video-item small { color: var(--muted); font-size: .75rem; }

/* ---------- Gallery ---------- */
.gallery { columns: 4; column-gap: 14px; }
.gallery button { display: block; width: 100%; margin-bottom: 14px; border-radius: 14px; overflow: hidden; position: relative; box-shadow: var(--shadow); }
.gallery img { width: 100%; transition: transform .5s; background: #ece9df; }
.gallery button:hover img { transform: scale(1.06); }
.gallery button::after { content: '⤢'; position: absolute; right: 10px; bottom: 10px; width: 32px; height: 32px; border-radius: 50%; background: rgba(28,26,20,.7); color: #fff; display: grid; place-items: center; opacity: 0; transition: .2s; }
.gallery button:hover::after { opacity: 1; }
.center { text-align: center; margin-top: 30px; }
.lb { position: fixed; inset: 0; z-index: 200; background: rgba(10,10,12,.92); display: flex; align-items: center; justify-content: center; padding: 20px; }
.lb img { max-height: 88vh; border-radius: 12px; }
.lb button { position: absolute; color: #fff; font-size: 2rem; width: 52px; height: 52px; border-radius: 50%; background: rgba(255,255,255,.12); }
.lb button:hover { background: var(--violet); }
.lb .x { top: 20px; right: 20px; } .lb .p { left: 20px; } .lb .n { right: 20px; }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: s; }
.step { position: relative; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.16); border-radius: var(--radius); padding: 28px 22px; }
.step::before { counter-increment: s; content: counter(s, decimal-leading-zero); font-family: var(--font-head); font-size: 2.4rem; font-weight: 800; background: linear-gradient(135deg, var(--gold-2), #fff3c9); -webkit-background-clip: text; background-clip: text; color: transparent; }
.step h3 { margin: 8px 0; font-size: 1.05rem; }
.step p { color: #c9ccd3; font-size: .86rem; }

/* ---------- Payment ---------- */
.pays { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.pay { display: flex; flex-direction: column; gap: 12px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; transition: .3s; }
.pay:hover { border-color: var(--violet-2); transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.pay .logo-box { height: 56px; display: flex; align-items: center; }
.pay .logo-box img { max-height: 48px; width: auto; }
.pay .logo-box.dk { background: #1b1b1b; border-radius: 10px; padding: 0 14px; width: fit-content; }
.pay b { font-size: 1rem; }
.pay p { color: var(--muted); font-size: .82rem; flex: 1; }
.pay span { color: var(--violet); font-size: .78rem; font-weight: 700; }

/* ---------- FAQ ---------- */
.faq { max-width: 820px; margin: 0 auto; display: grid; gap: 12px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 4px 22px; transition: .2s; }
.faq details[open] { border-color: var(--violet-2); box-shadow: var(--shadow); }
.faq summary { cursor: pointer; padding: 16px 0; font-weight: 700; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-size: 1.4rem; color: var(--violet); transition: .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { color: var(--muted); padding-bottom: 18px; font-size: .92rem; }

/* ---------- CTA / Contact ---------- */
.cta { background: linear-gradient(135deg, var(--violet-dark), var(--violet)); color: #fff; border-radius: 30px; padding: 56px; display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center; position: relative; overflow: hidden; box-shadow: var(--shadow-lg); }
.cta::after { content: ''; position: absolute; width: 380px; height: 380px; border-radius: 50%; background: rgba(233,185,73,.2); right: -120px; top: -140px; filter: blur(30px); }
.cta h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); position: relative; }
.cta p { color: #e4e6ea; margin-top: 12px; position: relative; }
.contacts { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; position: relative; z-index: 1; }
.contact { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-radius: 14px; background: rgba(255,255,255,.13); border: 1px solid rgba(255,255,255,.25); font-weight: 700; transition: .2s; }
.contact:hover { background: #fff; color: var(--violet); transform: translateY(-3px); }
.contact svg { width: 26px; height: 26px; flex-shrink: 0; }

/* ---------- Footer ---------- */
.footer { background: #0a0a0b; color: #b3b6be; padding: 64px 0 0; margin-top: 88px; font-size: .9rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 44px; }
.footer .logo-text strong { color: #fff; }
.footer .logo-text small { color: #8c8f98; }
.footer p.about { margin: 16px 0; max-width: 320px; }
.footer h4 { color: #fff; margin-bottom: 14px; font-size: 1rem; }
.footer li { margin-bottom: 9px; }
.footer a:hover { color: var(--gold-2); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: .82rem; }

/* ---------- Floating ---------- */
.fab { position: fixed; right: 22px; bottom: 22px; z-index: 60; display: flex; flex-direction: column; gap: 10px; }
.fab a { width: 54px; height: 54px; border-radius: 50%; display: grid; place-items: center; color: #fff; box-shadow: 0 10px 24px -6px rgba(0,0,0,.4); transition: .2s; }
.fab a:hover { transform: scale(1.12); }
.fab svg { width: 26px; height: 26px; }
.fab .wa { background: #25d366; } .fab .tg { background: #229ed9; }
.tf-modal { position: fixed; inset: 0; z-index: 300; display: flex; align-items: center; justify-content: center; background: rgba(10,10,12,.85); padding: 16px; }
.tf-modal video { max-width: min(92vw, 480px); max-height: 82vh; border-radius: 14px; background: #000; }
.tf-modal .x { position: absolute; top: 20px; right: 24px; color: #fff; font-size: 2.2rem; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s cubic-bezier(.16,1,.3,1), transform .8s cubic-bezier(.16,1,.3,1); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .products, .dl-grid, .pays { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .gallery { columns: 3; }
}
@media (max-width: 900px) {
  .hero .container, .classes, .class-view, .video-wrap, .cta { grid-template-columns: 1fr; }
  .features, .strip .container { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav { position: fixed; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 14px; border-bottom: 1px solid var(--line); display: none; }
  .nav.open { display: flex; }
  .burger { display: block; }
  .header-cta .btn { display: none; }
  .hero-visual { display: none; }
  .cta { padding: 34px 24px; }
}
@media (max-width: 600px) {
  section { padding: 60px 0; }
  .products, .dl-grid, .pays, .features, .steps, .strip .container, .contacts, .footer-grid { grid-template-columns: 1fr; }
  .gallery { columns: 2; }
  .topbar-links { display: none; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } .reveal { opacity: 1; transform: none; } }

.step h3 { color: #fff; }
.step { box-shadow: var(--shadow); }
.hero .container { padding-top: 84px; padding-bottom: 96px; }

/* ==========================================================================
   NIGHT MODE (default) — toggle via [data-theme]
   ========================================================================== */
.theme-toggle { width: 42px; height: 42px; border-radius: 10px; border: 1px solid var(--line); background: #fff; font-size: 1.15rem; display: grid; place-items: center; transition: .2s; }
.theme-toggle:hover { border-color: var(--violet); transform: rotate(15deg); }
.theme-toggle .sun { display: none; }
[data-theme="dark"] .theme-toggle .sun { display: inline; }
[data-theme="dark"] .theme-toggle .moon { display: none; }

[data-theme="dark"] {
  color-scheme: dark;
  --ink: #f1efe8;
  --ink-2: #cfccc2;
  --muted: #9d9a90;
  --line: #2e2c27;
  --bg: #0e0e10;
  --card: #17171a;
  --shadow: 0 10px 30px -12px rgba(0,0,0,.65);
  --shadow-lg: 0 30px 70px -25px rgba(0,0,0,.85);
}
[data-theme="dark"] body {
  background-image: radial-gradient(900px 500px at 10% 0%, rgba(200,150,46,.18), transparent 60%), radial-gradient(800px 500px at 100% 60%, rgba(233,185,73,.06), transparent 60%);
  background-attachment: fixed;
}
[data-theme="dark"] .header { background: rgba(14,14,16,.82); }
[data-theme="dark"] .nav a:hover, [data-theme="dark"] .nav a.active { background: rgba(230,184,74,.18); color: #f0d68a; }
[data-theme="dark"] .btn-ghost, [data-theme="dark"] .theme-toggle, [data-theme="dark"] .burger { background: #17171a; color: var(--ink); border-color: var(--line); }
[data-theme="dark"] .btn-ghost:hover { border-color: var(--violet-2); color: #f0d68a; }
[data-theme="dark"] .strip { background: #121214; }
[data-theme="dark"] .strip-item .ico, [data-theme="dark"] .eyebrow { background: rgba(230,184,74,.16); color: #f0d68a; }
[data-theme="dark"] .feature, [data-theme="dark"] .pay, [data-theme="dark"] .classes,
[data-theme="dark"] .faq details, [data-theme="dark"] .video-item { background: var(--card); }
[data-theme="dark"] .feature .ico { background: linear-gradient(135deg, rgba(230,184,74,.25), rgba(233,185,73,.18)); }
[data-theme="dark"] .product.best { background: linear-gradient(180deg, #201e17, var(--card) 45%); border-color: var(--violet-2); }
[data-theme="dark"] .plat { background: #26262b; color: var(--ink-2); }
[data-theme="dark"] .p-list li::before { background: rgba(18,163,127,.18); }
[data-theme="dark"] .p-list li.star::before { background: rgba(233,185,73,.18); color: var(--gold-2); }
[data-theme="dark"] .price.contact, [data-theme="dark"] .p-tag, [data-theme="dark"] .pay span { color: #e6c25f; }
[data-theme="dark"] .class-tab:hover { background: #222226; }
[data-theme="dark"] .class-tab img { background: #26262b; }
[data-theme="dark"] .class-tab.active { background: linear-gradient(90deg, rgba(230,184,74,.25), transparent); color: #f5e3a6; }
[data-theme="dark"] .video-item.active { background: rgba(230,184,74,.2); }
[data-theme="dark"] .gallery img { background: #202024; }
[data-theme="dark"] .dark { background: #0b0b0d; }
[data-theme="dark"] .step { background: #17171a !important; }
[data-theme="dark"] .pay .logo-box img { background: #fff; padding: 6px 10px; border-radius: 10px; }
[data-theme="dark"] .hero { background: #0b0b0d; }
[data-theme="dark"] .footer { background: #070708; }
[data-theme="dark"] .faq details[open] { border-color: var(--violet-2); }
[data-theme="dark"] .feature:hover, [data-theme="dark"] .pay:hover, [data-theme="dark"] .product:hover { border-color: var(--violet-2); }
body, .header, .product, .feature, .pay, .classes, .faq details, .video-item, .strip { transition: background-color .35s, color .35s, border-color .35s; }

/* ---- New artwork ---- */
.hero-bg { background: url('assets/hero-bg.jpg') center/cover no-repeat; opacity: .55; }
.hero::before { background: radial-gradient(700px 400px at 85% 20%, rgba(230,184,74,.35), transparent 60%), linear-gradient(100deg, rgba(11,11,13,.92) 25%, rgba(20,19,15,.35)); }
.hero-visual .frame img { aspect-ratio: 3/2; }
.band { display: grid; grid-template-columns: 1.1fr 1fr; border-radius: 28px; overflow: hidden; background: #14130f; box-shadow: var(--shadow-lg); color: #fff; border: 1px solid rgba(230,184,74,.35); }
.band img { width: 100%; height: 100%; object-fit: cover; min-height: 320px; }
.band-text { padding: 44px; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; gap: 14px; }
.band-text h2 { font-size: clamp(1.5rem, 2.6vw, 2.2rem); }
.band-text p { color: #c9ccd3; }
.band-text .eyebrow { background: rgba(255,255,255,.12); color: var(--gold-2); margin: 0; }
.cta { background: linear-gradient(135deg, rgba(20,19,15,.9), rgba(200,150,46,.75)), url('assets/hero-bg.jpg') center/cover; }
@media (max-width: 900px) { .band { grid-template-columns: 1fr; } .band-text { padding: 28px; } }

/* ==========================================================================
   MỆNH KIM — 3D METAL BUTTONS (gold / silver / steel)
   ========================================================================== */
:root {
  --gold-edge: #8a5d0c;
  --silver-edge: #8d9099;
  --steel-edge: #0a0a0c;
}
.btn, .dl-btn, .contact, .theme-toggle, .burger, .tf-link, .more, #more-shots {
  position: relative;
  transition: transform .12s ease, box-shadow .12s ease, filter .2s;
}
.btn { border-radius: 14px; padding: 13px 26px; letter-spacing: .01em; text-shadow: 0 1px 0 rgba(255,255,255,.35); }
.btn::after { content: ''; position: absolute; left: 8%; right: 8%; top: 2px; height: 46%; border-radius: 12px 12px 40px 40px / 12px 12px 18px 18px; background: linear-gradient(180deg, rgba(255,255,255,.55), rgba(255,255,255,0)); pointer-events: none; }

/* GOLD — primary */
.btn-primary, .btn-gold {
  color: #3a2603 !important;
  border: 1px solid #fff0b8 !important;
  background: linear-gradient(180deg, #fff1b5 0%, #ffd45a 38%, #e3a62a 62%, #c58a1c 100%) !important;
  box-shadow: 0 6px 0 var(--gold-edge), 0 14px 22px -4px rgba(120,80,0,.55), inset 0 1px 0 rgba(255,255,255,.9), inset 0 -3px 6px rgba(120,70,0,.35) !important;
}
.btn-primary:hover, .btn-gold:hover { transform: translateY(-3px); filter: brightness(1.06); box-shadow: 0 9px 0 var(--gold-edge), 0 20px 28px -6px rgba(120,80,0,.6), inset 0 1px 0 rgba(255,255,255,.9), inset 0 -3px 6px rgba(120,70,0,.35) !important; }
.btn-primary:active, .btn-gold:active { transform: translateY(5px); box-shadow: 0 1px 0 var(--gold-edge), 0 4px 8px rgba(120,80,0,.5), inset 0 2px 6px rgba(120,70,0,.5) !important; }

/* SILVER — secondary */
.btn-ghost {
  color: #25262b !important;
  border: 1px solid #ffffff !important;
  background: linear-gradient(180deg, #ffffff 0%, #e8eaee 40%, #c4c8d0 70%, #aeb3bd 100%) !important;
  box-shadow: 0 6px 0 var(--silver-edge), 0 14px 20px -4px rgba(0,0,0,.35), inset 0 1px 0 #fff, inset 0 -3px 6px rgba(70,75,90,.3);
}
.btn-ghost:hover { transform: translateY(-3px); color: #000 !important; box-shadow: 0 9px 0 var(--silver-edge), 0 20px 26px -6px rgba(0,0,0,.4), inset 0 1px 0 #fff, inset 0 -3px 6px rgba(70,75,90,.3); }
.btn-ghost:active { transform: translateY(5px); box-shadow: 0 1px 0 var(--silver-edge), inset 0 2px 6px rgba(70,75,90,.5); }

/* STEEL / glass — on dark hero */
.btn-light {
  color: #fff !important;
  border: 1px solid rgba(255,255,255,.4) !important;
  background: linear-gradient(180deg, rgba(255,255,255,.22), rgba(255,255,255,.04) 55%, rgba(0,0,0,.25)) !important;
  box-shadow: 0 6px 0 rgba(0,0,0,.65), 0 14px 22px -4px rgba(0,0,0,.6), inset 0 1px 0 rgba(255,255,255,.5);
  text-shadow: 0 1px 2px rgba(0,0,0,.6);
}
.btn-light::after { display: none; }
.btn-light:hover { transform: translateY(-3px); box-shadow: 0 9px 0 rgba(0,0,0,.65), 0 20px 28px -6px rgba(0,0,0,.6), inset 0 1px 0 rgba(255,255,255,.6); }
.btn-light:active { transform: translateY(5px); box-shadow: 0 1px 0 rgba(0,0,0,.65), inset 0 2px 6px rgba(0,0,0,.5); }
.btn-block { margin-bottom: 6px; }

/* Download buttons — chrome plates */
.dl-btn {
  color: #1d1e22; border: 1px solid #fff; border-radius: 14px;
  background: linear-gradient(180deg, #ffffff, #e6e8ec 45%, #bfc3cb);
  box-shadow: 0 5px 0 var(--silver-edge), 0 12px 18px -4px rgba(0,0,0,.5), inset 0 1px 0 #fff;
}
.dl-btn:hover { background: linear-gradient(180deg, #fff6cf, #ffd860 50%, #d9a02a); box-shadow: 0 7px 0 var(--gold-edge), 0 16px 22px -4px rgba(0,0,0,.5), inset 0 1px 0 #fff; transform: translateY(-3px); }
.dl-btn:active { transform: translateY(4px); box-shadow: 0 1px 0 var(--silver-edge), inset 0 2px 5px rgba(0,0,0,.3); }
.dl-btn small { color: #4f525b; }
.dl-btn.alt { color: #f5e3a6; border: 1px solid rgba(255,224,138,.55); background: linear-gradient(180deg, #2b2a24, #15140f); box-shadow: 0 5px 0 #000, 0 12px 18px -4px rgba(0,0,0,.6), inset 0 1px 0 rgba(255,224,138,.35); }
.dl-btn.alt small { color: #c9ccd3; }
.dl-btn.alt:hover { color: #3a2603; background: linear-gradient(180deg, #fff1b5, #ffd45a 45%, #c58a1c); box-shadow: 0 7px 0 var(--gold-edge), 0 16px 22px -4px rgba(0,0,0,.5); }
.dl-btn.alt:hover small { color: #5a4310; }

/* Contact buttons — brushed steel */
.contact {
  color: #fff; border: 1px solid rgba(255,255,255,.35); border-radius: 14px;
  background: linear-gradient(180deg, #4a4b52, #2b2c31 55%, #1a1a1d);
  box-shadow: 0 5px 0 #000, 0 12px 18px -4px rgba(0,0,0,.6), inset 0 1px 0 rgba(255,255,255,.35);
}
.contact:hover { color: #3a2603; background: linear-gradient(180deg, #fff1b5, #ffd45a 50%, #c58a1c); border-color: #fff0b8; box-shadow: 0 7px 0 var(--gold-edge), 0 16px 22px -4px rgba(0,0,0,.5), inset 0 1px 0 #fff; transform: translateY(-3px); }
.contact:active { transform: translateY(4px); box-shadow: 0 1px 0 var(--gold-edge); }

/* Round/utility buttons */
.theme-toggle, .burger { border-radius: 12px; border: 1px solid #fff !important; background: linear-gradient(180deg, #fff, #dfe2e7 55%, #b9bec7) !important; color: #25262b !important; box-shadow: 0 4px 0 var(--silver-edge), 0 8px 14px -3px rgba(0,0,0,.4), inset 0 1px 0 #fff; }
.theme-toggle:hover { transform: translateY(-2px); }
.theme-toggle:active, .burger:active { transform: translateY(3px); box-shadow: 0 1px 0 var(--silver-edge); }
.fab a { box-shadow: 0 5px 0 rgba(0,0,0,.5), 0 12px 20px -4px rgba(0,0,0,.5), inset 0 2px 0 rgba(255,255,255,.45); }
.fab a:active { transform: translateY(4px); box-shadow: 0 1px 0 rgba(0,0,0,.5); }
.class-tab, .video-item { box-shadow: 0 3px 0 rgba(0,0,0,.12); }
.class-tab.active, .video-item.active { box-shadow: 0 4px 0 var(--gold-edge); border-color: #e6b84a; }
.slider-dots, .ribbon { text-shadow: 0 1px 0 rgba(255,255,255,.4); }
.ribbon { background: linear-gradient(180deg, #fff1b5, #e3a62a); box-shadow: 0 3px 0 var(--gold-edge); }

/* Metal polish on headings & key elements */
.hero h1 em, .step::before { background: linear-gradient(180deg, #fff6d0, #ffd45a 50%, #c58a1c); -webkit-background-clip: text; background-clip: text; color: transparent; }
.logo-mark { background: linear-gradient(180deg, #fff1b5, #e3a62a 60%, #b8791a); color: #3a2603; box-shadow: 0 4px 0 var(--gold-edge), 0 10px 16px -4px rgba(0,0,0,.4), inset 0 1px 0 #fff; }
.pill i { background: #ffd45a; box-shadow: 0 0 0 4px rgba(255,212,90,.25); }
.price { background: linear-gradient(180deg, var(--ink), var(--ink-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
[data-theme="dark"] .price { background: linear-gradient(180deg, #fff6d0, #e3a62a); -webkit-background-clip: text; background-clip: text; color: transparent; }
.product.best { box-shadow: 0 0 0 1px #e6b84a, var(--shadow-lg); }
.eyebrow { color: #8a5d0c; }
[data-theme="dark"] .eyebrow { color: #ffe08a; }
.gallery button::after { background: rgba(20,19,15,.75); }
.bar div i { background: linear-gradient(90deg, #c58a1c, #ffe08a, #fff); }
.cta { background: linear-gradient(135deg, rgba(20,19,15,.92), rgba(60,45,12,.78)), url('assets/hero-bg.jpg') center/cover; }
.cta::after { background: rgba(255,212,90,.18); }
.hero-bg { opacity: .6; }

/* ---- Fix: float cards unreadable in night mode (white card must keep dark text) ---- */
.float-card, [data-theme="dark"] .float-card { color: #1c1a14 !important; background: linear-gradient(180deg, #ffffff, #e9ebef); border: 1px solid #fff; box-shadow: 0 5px 0 #8d9099, 0 16px 28px -6px rgba(0,0,0,.6); }
.float-card span.ico, [data-theme="dark"] .float-card span.ico { background: linear-gradient(180deg, #fff1b5, #e3a62a); color: #3a2603; }

/* ---- Platform icons ---- */
.pi { width: 18px; height: 18px; flex-shrink: 0; display: inline-block; vertical-align: -4px; }
.plat { display: inline-flex; align-items: center; gap: 6px; }
.plat .pi { width: 15px; height: 15px; vertical-align: 0; color: #b8791a; }
[data-theme="dark"] .plat .pi { color: #ffd45a; }
.float-card .pi, .dl-card h3 .ico .pi { width: 20px; height: 20px; }
.dl-card h3 .ico { color: #ffe08a; }
.hero-plats { display: flex; gap: 12px; flex-wrap: wrap; margin: 0 0 28px; }
.ptile { display: flex; flex-direction: column; align-items: center; gap: 6px; min-width: 76px; padding: 12px 10px; border-radius: 14px; color: #ffe9a8; font-size: .74rem; font-weight: 700; background: linear-gradient(180deg, rgba(255,255,255,.16), rgba(255,255,255,.03) 60%, rgba(0,0,0,.25)); border: 1px solid rgba(255,224,138,.4); box-shadow: 0 5px 0 rgba(0,0,0,.6), 0 12px 18px -4px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.45); transition: transform .15s, box-shadow .15s, color .15s; }
.ptile .pi { width: 28px; height: 28px; vertical-align: 0; }
.ptile:hover { transform: translateY(-4px); color: #fff; box-shadow: 0 8px 0 rgba(0,0,0,.6), 0 16px 22px -4px rgba(0,0,0,.6), inset 0 1px 0 rgba(255,255,255,.55); }

/* ---- Language switcher ---- */
.lang { position: relative; }
.lang-btn { display: inline-flex; align-items: center; gap: 8px; height: 42px; padding: 0 14px; border-radius: 12px; font-weight: 800; font-size: .82rem; color: #25262b; border: 1px solid #fff; background: linear-gradient(180deg, #fff, #dfe2e7 55%, #b9bec7); box-shadow: 0 4px 0 #8d9099, 0 8px 14px -3px rgba(0,0,0,.4), inset 0 1px 0 #fff; transition: transform .12s, box-shadow .12s; }
.lang-btn:hover { transform: translateY(-2px); }
.lang-btn:active { transform: translateY(3px); box-shadow: 0 1px 0 #8d9099; }
.lang-btn img, .lang-menu img { width: 20px; height: 14px; object-fit: cover; border-radius: 3px; box-shadow: 0 0 0 1px rgba(0,0,0,.2); }
.lang-btn::after { content: '▾'; font-size: .8rem; }
.lang-menu { position: absolute; right: 0; top: calc(100% + 10px); min-width: 170px; padding: 8px; border-radius: 14px; background: linear-gradient(180deg, #2b2a24, #15140f); border: 1px solid rgba(255,224,138,.4); box-shadow: 0 18px 40px -8px rgba(0,0,0,.7); display: none; z-index: 80; }
.lang.open .lang-menu { display: grid; gap: 4px; animation: riseIn .2s ease both; }
.lang-menu button { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 10px; color: #e7e8ec; font-weight: 600; font-size: .9rem; text-align: left; transition: .15s; }
.lang-menu button:hover { background: rgba(255,224,138,.14); color: #ffe08a; }
.lang-menu button.on { background: linear-gradient(180deg, #fff1b5, #e3a62a); color: #3a2603; }
@keyframes riseIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
@media (max-width: 600px) { .lang-btn { padding: 0 10px; } }

.visit-chip { background: rgba(255,224,138,.14); border: 1px solid rgba(255,224,138,.35); padding: 2px 12px; border-radius: 999px; font-size: .78rem; }
.visit-chip b { color: var(--gold-2); letter-spacing: .08em; }