.billing-page { background: #f6f1ec; min-height: 100vh; }
.billing-nav { background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20; backdrop-filter: blur(14px); }
.billing-nav__inner { max-width: var(--container); margin: auto; min-height: 78px; padding: 10px var(--pad); display: flex; align-items: center; justify-content: space-between; }
.billing-nav__back, .billing-nav__spacer { width: 42px; }
.billing-nav__back { height: 42px; display: grid; place-items: center; border-radius: 50%; background: var(--gray-100); font-size: 22px; font-weight: 700; }
.billing-nav .nav__brand { box-shadow: none; width: 172px; }
.billing-main { padding-bottom: 76px; }
.billing-hero { background: linear-gradient(135deg, #181415, #312426); color: #fff; overflow: hidden; }
.billing-hero__inner { min-height: 310px; padding-top: 58px; padding-bottom: 58px; display: flex; align-items: center; justify-content: space-between; gap: 30px; position: relative; }
.billing-hero h1 { max-width: 650px; font-size: clamp(38px, 7vw, 70px); line-height: 1; letter-spacing: -.04em; margin-bottom: 18px; }
.billing-hero p:not(.eyebrow) { max-width: 580px; color: rgba(255,255,255,.7); line-height: 1.65; }
.billing-hero__badge { width: 150px; height: 150px; flex: 0 0 auto; border: 1px solid rgba(244,196,0,.5); border-radius: 50%; display: grid; place-items: center; color: var(--blue); font-size: 48px; font-weight: 800; box-shadow: 0 0 0 24px rgba(244,196,0,.04); }
.billing-content { max-width: 920px; margin-top: -28px; position: relative; z-index: 2; }
.billing-form { display: grid; gap: 22px; }
.billing-card { background: #fff; border-radius: 24px; padding: clamp(24px,5vw,42px); box-shadow: 0 18px 60px rgba(24,20,21,.08); }
.billing-card__heading { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 30px; }
.billing-card__heading > span { width: 38px; height: 38px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 50%; background: var(--orange-soft); color: var(--orange); font-size: 12px; font-weight: 800; }
.billing-card__heading h2 { font-size: 22px; margin-bottom: 5px; }
.billing-card__heading p { color: var(--ink-soft); font-size: 14px; line-height: 1.5; }
.billing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px 18px; }
.billing-grid--three { grid-template-columns: repeat(3,1fr); }
.billing-field { display: grid; gap: 8px; align-content: start; }
.billing-field--wide { grid-column: 1 / -1; }
.billing-field > span { font-size: 13px; font-weight: 700; }
.billing-field input, .billing-field select { width: 100%; min-height: 52px; border: 1.5px solid rgba(24,20,21,.13); border-radius: 12px; background: #fff; padding: 0 15px; color: var(--ink); outline: 0; transition: border-color .2s, box-shadow .2s; font: inherit; font-size: 15px; }
.billing-field select { appearance: auto; }
.billing-field input:focus, .billing-field select:focus { border-color: var(--orange); box-shadow: 0 0 0 4px var(--orange-soft); }
.billing-field input:user-invalid, .billing-field select:user-invalid { border-color: #c53636; }
.billing-field small { color: var(--ink-soft); font-size: 11px; line-height: 1.4; }
.billing-money { position: relative; }
.billing-money > span { position: absolute; left: 15px; top: 50%; transform: translateY(-50%); color: var(--ink-soft); font-weight: 700; }
.billing-money input { padding-left: 31px; }
.billing-uploads { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.upload-box { min-height: 210px; padding: 25px; border: 2px dashed rgba(24,20,21,.16); border-radius: 18px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; cursor: pointer; transition: border-color .2s, background .2s; }
.upload-box:hover, .upload-box.is-filled { border-color: var(--orange); background: var(--orange-soft); }
.upload-box input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.upload-box__icon { width: 44px; height: 44px; margin-bottom: 12px; display: grid; place-items: center; border-radius: 50%; background: var(--gray-100); font-size: 24px; font-weight: 800; }
.upload-box strong { font-size: 14px; }
.upload-box__hint { margin: 6px 0 14px; color: var(--ink-soft); font-size: 12px; }
.upload-box__file { max-width: 100%; color: var(--orange); font-size: 12px; font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.billing-consent { display: flex; gap: 12px; align-items: flex-start; padding: 6px 4px; color: var(--ink-soft); font-size: 13px; line-height: 1.55; cursor: pointer; }
.billing-consent input { width: 18px; height: 18px; margin-top: 1px; accent-color: var(--orange); flex: 0 0 auto; }
.billing-submit { max-width: 440px; margin: 4px auto 0; }
.billing-footnote { text-align: center; color: var(--ink-soft); font-size: 12px; }
.billing-alert { padding: 15px 18px; border-radius: 12px; background: #fff3cd; color: #6c5300; font-size: 13px; line-height: 1.5; border: 1px solid #ffe083; }
.billing-alert.is-error { background: #fff0f0; color: #8c1d1d; border-color: #f5bcbc; }
.billing-footer { padding: 28px var(--pad); border-top: 1px solid var(--line); display: flex; justify-content: center; gap: 25px; color: var(--ink-soft); font-size: 12px; }
.billing-footer a { font-weight: 700; color: var(--ink); }
@media (max-width: 700px) {
  .billing-hero__badge { display: none; }
  .billing-hero__inner { min-height: 260px; padding-top: 44px; padding-bottom: 55px; }
  .billing-content { margin-top: -22px; }
  .billing-grid, .billing-grid--three, .billing-uploads { grid-template-columns: 1fr; }
  .billing-field--wide { grid-column: auto; }
  .billing-card { border-radius: 20px; }
  .upload-box { min-height: 185px; }
}