:root {
  --bg: #ffffff;
  --ink: #101820;
  --accent: #ff5a1f;
  --accent-dark: #e04a12;
  --muted: #5c6770;
  --line: #e8ecef;
  --green: #1f9d55;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(16,24,32,.08);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: var(--ink); background: var(--bg); line-height: 1.55; }
img, video { max-width: 100%; display: block; }
a { color: var(--accent); }

.announce { background: var(--ink); color: #fff; text-align: center; font-size: 13px; padding: 8px 12px; letter-spacing: .3px; }
.container { max-width: 1060px; margin: 0 auto; padding: 0 20px; }

.nav { border-bottom: 1px solid var(--line); background: #fff; position: sticky; top: 0; z-index: 50; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; max-width: 1060px; margin: 0 auto; padding: 12px 20px; }
.nav-logo { font-weight: 800; font-size: 19px; letter-spacing: -.3px; color: var(--ink); text-decoration: none; }
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 22px; align-items: center; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 600; }
.nav-links a:hover { color: var(--ink); }
.nav-links .btn-mini { background: var(--accent); color: #fff; padding: 8px 16px; border-radius: 99px; font-size: 13px; font-weight: 800; text-decoration: none; }

.hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; align-items: center; padding: 44px 0 36px; }
.hero-video { border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; background: #000; }
.hero-video video { width: 100%; height: auto; }
.badge { display: inline-block; background: #fff3ec; color: var(--accent); font-weight: 700; font-size: 12px; letter-spacing: 1px; text-transform: uppercase; padding: 6px 12px; border-radius: 99px; margin-bottom: 16px; }
h1 { font-size: clamp(28px, 4vw, 44px); line-height: 1.12; letter-spacing: -.5px; margin-bottom: 14px; }
.sub { color: var(--muted); font-size: 17px; margin-bottom: 24px; }
.price-row { display: flex; align-items: baseline; gap: 12px; margin-bottom: 8px; flex-wrap: wrap; }
.price { font-size: 36px; font-weight: 800; letter-spacing: -.5px; }
.price-old { color: var(--muted); text-decoration: line-through; font-size: 20px; }
.save { background: #e8f7ee; color: var(--green); font-weight: 700; font-size: 13px; padding: 4px 10px; border-radius: 99px; }
.meta { color: var(--muted); font-size: 14px; margin-bottom: 22px; }

.btn { display: block; width: 100%; text-align: center; background: var(--accent); color: #fff; font-size: 19px; font-weight: 800; padding: 17px 24px; border-radius: 12px; text-decoration: none; box-shadow: 0 8px 20px rgba(255,90,31,.35); transition: background .15s, transform .1s; border: 0; cursor: pointer; }
.btn:hover { background: var(--accent-dark); transform: translateY(-1px); }
.btn-sub { text-align: center; font-size: 13px; color: var(--muted); margin-top: 10px; }

.trust { display: flex; justify-content: center; gap: 28px; flex-wrap: wrap; padding: 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: 14px; color: var(--muted); }
.trust b { color: var(--ink); }

section { padding: 56px 0; }
.section-title { font-size: clamp(22px, 3vw, 30px); letter-spacing: -.3px; margin-bottom: 10px; }
.section-sub { color: var(--muted); margin-bottom: 30px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.card { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card .icon { font-size: 26px; margin-bottom: 10px; }
.card h3 { font-size: 16px; margin-bottom: 6px; }
.card p { color: var(--muted); font-size: 14px; }

/* size picker */
.sizes { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 18px; }
.size-card { border: 2px solid var(--line); border-radius: var(--radius); padding: 22px; cursor: pointer; transition: border-color .15s, box-shadow .15s; position: relative; }
.size-card:hover { box-shadow: var(--shadow); }
.size-card.selected { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,90,31,.15); }
.size-card .pop { position: absolute; top: -11px; right: 14px; background: var(--green); color: #fff; font-size: 11px; font-weight: 800; padding: 3px 10px; border-radius: 99px; letter-spacing: .4px; }
.size-name { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 6px; }
.size-name h3 { font-size: 18px; letter-spacing: -.2px; }
.size-name .liters { color: var(--muted); font-size: 13px; font-weight: 700; }
.size-dims { color: var(--muted); font-size: 14px; margin-bottom: 10px; }
.size-price { font-size: 26px; font-weight: 800; }
.size-price small { color: var(--muted); font-size: 13px; font-weight: 600; }
.size-price .old { color: var(--muted); text-decoration: line-through; font-size: 16px; font-weight: 600; }
.size-fits { font-size: 13px; color: var(--muted); margin-top: 8px; }

.buy-bar { display: flex; gap: 14px; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; box-shadow: var(--shadow); margin-top: 26px; flex-wrap: wrap; }
.buy-bar .info { flex: 1; min-width: 200px; }
.buy-bar .info b { font-size: 16px; }
.buy-bar .info small { display: block; color: var(--muted); }
.buy-bar .btn { flex: 0 1 340px; }
.buy-secure { text-align: center; font-size: 13px; color: var(--muted); margin-top: 12px; }
.buy-secure b { color: var(--ink); }

.specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.spec { display: flex; justify-content: space-between; border-bottom: 1px dashed var(--line); padding: 8px 2px; font-size: 14px; }
.spec b { font-weight: 600; }

.reviews .card { display: flex; flex-direction: column; gap: 10px; }
.stars { color: #f5a623; letter-spacing: 2px; }
.review-name { font-size: 13px; color: var(--muted); }

.faq details { border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; margin-bottom: 10px; }
.faq summary { font-weight: 700; cursor: pointer; }
.faq p { color: var(--muted); font-size: 14px; margin-top: 8px; }

.cta { text-align: center; background: var(--ink); color: #fff; border-radius: var(--radius); padding: 44px 24px; }
.cta h2 { font-size: clamp(22px, 3vw, 30px); margin-bottom: 10px; }
.cta p { color: #b8c0c8; margin-bottom: 24px; }

/* policy pages */
.page { max-width: 780px; margin: 0 auto; padding: 48px 20px 64px; }
.page h1 { font-size: clamp(26px, 3vw, 36px); margin-bottom: 8px; }
.page .updated { color: var(--muted); font-size: 13px; margin-bottom: 28px; }
.page h2 { font-size: 20px; margin: 28px 0 10px; letter-spacing: -.2px; }
.page p, .page li { color: #3c4650; font-size: 15px; margin-bottom: 10px; }
.page ul, .page ol { padding-left: 22px; margin-bottom: 12px; }
.page li { margin-bottom: 6px; }
.page .box { background: #f7f9fa; border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; margin: 18px 0; font-size: 15px; }
.page table { width: 100%; border-collapse: collapse; margin: 14px 0 20px; font-size: 14px; }
.page th, .page td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; }
.page th { background: #f7f9fa; }

/* thank you page */
.ty { min-height: 70vh; display: flex; align-items: center; justify-content: center; padding: 40px 20px; text-align: center; }
.ty-card { max-width: 560px; width: 100%; border: 1px solid var(--line); border-radius: 20px; padding: 44px 28px; box-shadow: var(--shadow); }
.ty-icon { font-size: 60px; margin-bottom: 16px; }
.ty-card h1 { font-size: 30px; margin-bottom: 10px; }
.ty-card p { color: var(--muted); margin-bottom: 22px; }
.ty-redirect { font-size: 14px; color: var(--muted); margin-top: 18px; }
.ty-redirect b { color: var(--accent); }
.ty-note { background: #f7f9fa; border: 1px solid var(--line); border-radius: 12px; padding: 16px; text-align: left; font-size: 14px; margin-top: 22px; }
.ty-note li { margin: 6px 0; }

footer { text-align: center; color: var(--muted); font-size: 13px; padding: 28px 0 40px; }
footer .links { display: flex; justify-content: center; gap: 18px; flex-wrap: wrap; margin-bottom: 12px; }
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--ink); }
footer .pay { margin-top: 10px; font-size: 12px; letter-spacing: 1px; }

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; padding-top: 24px; }
  .specs { grid-template-columns: 1fr; }
  .nav-links a:not(.btn-mini) { display: none; }
  .buy-bar .btn { flex: 1 1 100%; }
}