:root{--dio-accent: #4f46e5;--dio-bg: #f6f6f4;--dio-surface: #ffffff;--dio-text: #1f2937;--dio-text-soft: #6b7280;--dio-line: rgba(31, 41, 55, .12);--dio-radius: 14px;--dio-error: #b3261e;--dio-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif}:root[data-theme=dark]{--dio-bg: #131316;--dio-surface: #1e1e23;--dio-text: #f4f4f2;--dio-text-soft: #a1a1aa;--dio-line: rgba(244, 244, 242, .14);--dio-error: #ff8a80}*{margin:0;padding:0;box-sizing:border-box}html,body,#app{height:100%}@supports (height: 100dvh){html,body,#app{height:100dvh}}body{font-family:var(--dio-font);background:var(--dio-bg);color:var(--dio-text);line-height:1.5;font-size:15px;-webkit-font-smoothing:antialiased}.shell{max-width:1018px;margin:0 auto;min-height:100%;display:flex;flex-direction:column;padding:0 16px}.cols{flex:1 1 auto;display:flex;flex-direction:column}.main{min-width:0}.sheet-backdrop{display:none}@media (max-width: 819px){.rail{position:fixed;left:0;right:0;bottom:var(--dio-footer-h, 64px);z-index:45;transform:translateY(calc(100% + var(--dio-footer-h, 64px)));transition:transform .3s cubic-bezier(.32,.72,0,1)}.rail.open{transform:translateY(0)}.rail .summary{border-radius:18px 18px 0 0;border-left:0;border-right:0;border-bottom:0;max-height:68vh;overflow-y:auto}.rail.open .summary{box-shadow:0 -18px 44px #00000073}.summary--empty{display:none}.sheet-backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;z-index:44;background:#00000080;opacity:0;pointer-events:none;transition:opacity .3s ease}.sheet-backdrop.open{opacity:1;pointer-events:auto}}.rail-actions{display:none}@media (min-width: 820px){.cols{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:28px;align-items:start}.rail{position:sticky;top:var(--dio-header-h, 96px)}.footer{display:none!important}.rail-actions{display:flex;flex-direction:column-reverse;gap:8px;margin-top:12px}.rail-actions .btn{width:100%;flex:none}}@media (prefers-reduced-motion: reduce){.rail,.sheet-backdrop{transition:none}}.header{padding:14px 0 8px;position:sticky;top:0;background:var(--dio-bg);z-index:5}.header-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.header h1{font-size:1.15rem;font-weight:700;letter-spacing:-.01em;flex:1}.header-main{display:flex;align-items:center;gap:14px}.header-content{flex:1;min-width:0;display:flex;flex-direction:column}.header-logo{flex:none;width:60px;height:60px;margin-right:2px;border-radius:12px;object-fit:contain;border:1px solid var(--dio-line);background:var(--dio-surface)}.close{border:0;background:transparent;color:var(--dio-text-soft);font-size:1rem;cursor:pointer;padding:8px;border-radius:8px;line-height:1}.close:hover{background:var(--dio-line);color:var(--dio-text)}.steps{display:flex;gap:18px;padding:10px 0 12px}.step-dot{font-size:.75rem;letter-spacing:.06em;text-transform:uppercase;color:var(--dio-text-soft);position:relative;padding-left:16px}.step-dot:before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:8px;height:8px;border-radius:50%;background:var(--dio-line)}.step-dot.current{color:var(--dio-text);font-weight:600}.step-dot.current:before,.step-dot.done:before{background:var(--dio-accent)}.step{flex:1;padding-bottom:16px}.step.warming{height:0;padding:0;overflow:hidden;visibility:hidden;pointer-events:none}.card{background:var(--dio-surface);border:1px solid var(--dio-line);border-radius:var(--dio-radius);padding:16px;margin-bottom:12px}.center-note{text-align:center;color:var(--dio-text-soft);padding:60px 0;flex:1}.banner{border-radius:10px;padding:12px 14px;margin-bottom:12px;background:var(--dio-line);font-size:.92rem}.banner.error{background:color-mix(in srgb,var(--dio-error) 12%,transparent);color:var(--dio-error)}.error-text{color:var(--dio-error);font-size:.9rem;margin-top:6px}.load-error{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:10px;padding:30px 20px}.load-error svg{width:44px;height:44px;stroke:var(--dio-text-soft)}.load-error h2{font-size:1.25rem}.load-error p{color:var(--dio-text-soft);max-width:360px;font-size:.95rem}.load-error .btn{min-width:160px;margin-top:8px;flex:0}.load-error-detail{font-size:.75rem;opacity:.6;margin-top:14px}.spinner{width:28px;height:28px;margin:0 auto;border:3px solid var(--dio-line);border-top-color:var(--dio-accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion: reduce){.spinner{animation-duration:1.6s}}.ticket.disabled .ticket-info{opacity:.55}.ticket.selected{border-color:var(--dio-accent);box-shadow:inset 0 0 0 1px var(--dio-accent);background:linear-gradient(color-mix(in srgb,var(--dio-accent) 7%,transparent),color-mix(in srgb,var(--dio-accent) 7%,transparent)),var(--dio-surface)}.ticket.selected .stepper{border-color:var(--dio-accent)}.ticket.selected .stepper span{color:var(--dio-accent)}.ticket-main{display:flex;justify-content:space-between;gap:14px;align-items:flex-start}.ticket-info{display:flex;flex-direction:column;gap:3px;min-width:0}.ticket-info>b{font-size:1.02rem}.price{font-weight:600;color:var(--dio-accent);font-size:.95rem}.tier-active{color:var(--dio-text)}.tier-hint{font-size:.78rem;color:var(--dio-text-soft)}.ticket-desc{font-size:.86rem;color:var(--dio-text-soft);white-space:pre-line;margin-top:4px;overflow-wrap:anywhere}.badge{align-self:flex-start;font-size:.72rem;font-weight:600;padding:2px 8px;border-radius:999px;margin-top:6px;background:color-mix(in srgb,var(--dio-accent) 14%,transparent);color:var(--dio-accent)}.badge.sold-out{background:var(--dio-line);color:var(--dio-text-soft)}.ticket-remaining{align-self:flex-start;font-size:.78rem;color:var(--dio-text-soft);margin-top:6px}.ticket-remaining.low{color:var(--dio-accent);font-weight:600}.stepper{display:flex;align-items:center;gap:2px;flex-shrink:0;border:1px solid var(--dio-line);border-radius:999px;padding:2px}.stepper button{width:32px;height:32px;border:0;border-radius:50%;background:transparent;color:var(--dio-text);font-size:1.15rem;cursor:pointer;line-height:1}.stepper button:hover:not(:disabled){background:var(--dio-line)}.stepper button:disabled{opacity:.3;cursor:default}.stepper span{min-width:26px;text-align:center;font-weight:600}.donation-head b{display:block;margin-bottom:2px}.donation-head p{font-size:.86rem;color:var(--dio-text-soft);margin-bottom:8px}.donation-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:10px 0 4px}.chip{border:1px solid var(--dio-line);background:transparent;color:var(--dio-text);padding:7px 14px;border-radius:999px;cursor:pointer;font-size:.9rem}.chip.active{background:var(--dio-accent);border-color:var(--dio-accent);color:#fff;font-weight:600}.donation-row .donation-input{width:auto;flex:1 1 140px}.donation-cover-fees{margin-top:14px;font-size:.86rem}.donation-flow .cols{display:flex;flex-direction:column}.donation-flow .main{width:100%;max-width:520px;margin:0 auto;display:flex;flex-direction:column;flex:1}.donation-flow .step{display:flex;flex-direction:column;justify-content:center;padding:24px 0}.donation-flow .donation.card{padding:24px}.donation-flow .donation-head b{font-size:1.2rem}.donation-flow .donation-head p{font-size:.95rem}.donation-flow .donation-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:16px 0 10px}.donation-flow .chip{padding:16px 8px;font-size:1.1rem;font-weight:600;border-radius:12px;text-align:center}.donation-custom{position:relative}.donation-custom .prefix{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--dio-text-soft);font-size:1.1rem;pointer-events:none}.donation-custom .input{width:100%;padding:14px 14px 14px 30px;font-size:1.1rem;border-radius:12px}.donation-actions{margin-top:16px;display:flex;flex-direction:column;gap:8px}.donation-actions .btn{width:100%;padding:14px;font-size:1.05rem}.form-card{display:flex;flex-direction:column;gap:12px}.field{display:flex;flex-direction:column;gap:5px}.field>span{font-size:.85rem;font-weight:600}.field em{font-style:normal;font-weight:400;font-size:.75rem;color:var(--dio-text-soft)}.input{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--dio-line);background:var(--dio-bg);color:var(--dio-text);font:inherit}.input:focus{outline:2px solid var(--dio-accent);outline-offset:1px;border-color:transparent}select.input{appearance:none;-webkit-appearance:none;-moz-appearance:none;padding-right:38px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%236b7280' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:12px 8px;cursor:pointer}select.input::-ms-expand{display:none}:root[data-theme=dark] select.input{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%23a1a1aa' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")}select.input.placeholder{color:var(--dio-text-soft)}.registrant-progress{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;font-weight:600}.pill{font-size:.78rem;font-weight:600;padding:3px 10px;border-radius:999px;background:color-mix(in srgb,var(--dio-accent) 14%,transparent);color:var(--dio-accent)}.check{display:flex;gap:10px;align-items:flex-start;cursor:pointer}.check input{margin-top:3px;accent-color:var(--dio-accent);flex:0 0 16px;box-sizing:border-box;width:16px;height:16px;min-width:16px;min-height:16px}.addons{border-top:1px solid var(--dio-line);padding-top:12px;display:flex;flex-direction:column;gap:10px}.addons-title{font-size:.85rem}.addon{display:flex;flex-direction:column;gap:8px}.addon-price{margin-left:8px;color:var(--dio-accent)}.waiver{border-top:1px solid var(--dio-line);padding-top:12px;display:flex;flex-direction:column;gap:8px}.waiver-text{font-size:.82rem;color:var(--dio-text-soft);max-height:130px;overflow-y:auto;white-space:pre-line;border:1px solid var(--dio-line);border-radius:10px;padding:10px}.waiver a{color:var(--dio-accent);font-size:.85rem}.summary{background:var(--dio-surface);border:1px solid var(--dio-line);border-radius:var(--dio-radius);padding:16px}.summary--empty{text-align:center;display:flex;flex-direction:column;align-items:center;gap:7px;padding:22px 16px}.summary--empty svg{width:30px;height:30px;stroke:var(--dio-text-soft);opacity:.55}.summary--empty .empty-title{font-weight:600;font-size:.95rem}.summary--empty .empty-note{font-size:.85rem;color:var(--dio-text-soft);max-width:24ch}.sum-row{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:3px 0;font-size:.9rem;color:var(--dio-text-soft)}.sum-row .amt{font-variant-numeric:tabular-nums}.sum-row s{color:var(--dio-text-soft);margin-right:4px}.sum-row.item{color:var(--dio-text)}.sum-row.item .qty{color:var(--dio-text-soft);font-variant-numeric:tabular-nums}.fees-toggle{width:100%;border:0;background:transparent;color:var(--dio-text-soft);font:inherit;font-size:.9rem;cursor:pointer;display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:3px 0}.fees-toggle .lhs{display:inline-flex;align-items:center;gap:4px}.fees-toggle .chev{width:12px;height:12px;opacity:.75;transition:transform .18s ease}.fees-toggle[aria-expanded=true] .chev{transform:rotate(180deg)}.fees-detail{display:grid;grid-template-rows:0fr;transition:grid-template-rows .2s ease}.fees-detail.open{grid-template-rows:1fr}.fees-detail-inner{overflow:hidden}.fee-sub{display:flex;justify-content:space-between;gap:14px;font-size:.82rem;color:var(--dio-text-soft);padding:2px 0 2px 2px}.fee-sub .amt{font-variant-numeric:tabular-nums}.fee-note{font-size:.76rem;color:var(--dio-text-soft);padding:4px 0 6px;line-height:1.45;opacity:.85}.sum-total{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin-top:8px;padding-top:10px;border-top:1px solid var(--dio-line)}.sum-total .lbl{font-weight:600;font-size:.95rem}.sum-total .val{font-weight:700;font-size:1.35rem;letter-spacing:-.01em;font-variant-numeric:tabular-nums}@media (prefers-reduced-motion: reduce){.fees-detail,.fees-toggle .chev{transition:none}}.promo{border-top:1px solid var(--dio-line);margin-top:10px;padding-top:10px}.promo-row{display:flex;gap:8px;align-items:center}.promo-row .input{flex:1}.promo-applied{display:flex;justify-content:space-between;align-items:center;font-size:.9rem}.btn{border:0;border-radius:12px;padding:13px 22px;font:inherit;font-weight:700;cursor:pointer;transition:filter .15s ease,transform .1s ease}.btn.primary{background:var(--dio-accent);color:#fff;flex:1}.btn.primary:hover:not(:disabled){filter:brightness(1.08)}.btn.primary:active:not(:disabled){transform:scale(.99)}.btn:disabled{opacity:.45;cursor:default}.btn.ghost{background:transparent;color:var(--dio-text);border:1px solid var(--dio-line)}.btn.small{padding:9px 16px;background:var(--dio-accent);color:#fff}.link{border:0;background:transparent;color:var(--dio-accent);cursor:pointer;font:inherit;font-size:.9rem;padding:0;text-decoration:underline;text-underline-offset:2px}.footer{position:sticky;bottom:0;z-index:50;background:var(--dio-bg);display:flex;gap:10px;align-items:center;margin:0 -16px;padding:12px 16px calc(14px + env(safe-area-inset-bottom));border-top:1px solid var(--dio-line)}.footer-actions{display:flex;gap:10px;align-items:center;flex:1}.footer-total{display:none}@media (max-width: 819px){.footer-total{display:flex;flex-direction:column;min-width:110px;border:0;background:transparent;color:var(--dio-text);font:inherit;cursor:pointer;padding:0;text-align:left}.footer-total .ft-count{font-size:.8rem;color:var(--dio-text-soft);display:inline-flex;align-items:center;gap:4px}.footer-total .ft-amt{font-size:1.15rem;font-weight:700;font-variant-numeric:tabular-nums}.ft-chev{width:11px;height:11px;color:var(--dio-text-soft);transition:transform .2s ease}.footer-total[aria-expanded=true] .ft-chev{transform:rotate(180deg)}}.success{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:12px;padding:30px 10px}.success-mark svg{width:64px;height:64px;stroke:var(--dio-accent)}.success-mark circle{opacity:.35}.success h2{font-size:1.5rem}.success p{color:var(--dio-text-soft);max-width:380px}.success .order-ref{font-size:.8rem}.success .btn{min-width:180px;margin-top:10px;flex:0}