* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
         }

         :root {
            /* index.html color scheme */
            --stroke-color-01: #3758f9;
            --white: #ffffff;
            --text-color-01: #111928;
            --text-color-02: #333b52;
            --stroke-color-02: #e8ebf0;
            --stroke-color-03: #96aafb;
            --bg-color-01: #e3ebff;
            --bg-color-02: #ccfbef;
            --bg-color-05: #fef7c3;
            --bg-color-03: #fde272;
            --black: #000000;
            --text-color-03: #0e9384;
            --bg-color-04: #e7e5fe;

            /* semantic */
            --green: #16a34a;
            --green-bg: #f0fdf4;
            --green-bd: #bbf7d0;
            --wa: #22c55e;
            --wa-dk: #16a34a;

            --radius: 10px;
            --radius-sm: 7px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.07),
               0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07),
               0 2px 4px -2px rgba(0, 0, 0, 0.05);
         }

         html {
            overflow-y: scroll;
         }

         body {
            font-family: "Inter Tight", system-ui, sans-serif;
            background: #ffffff;
            color: var(--text-color-01);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 14px;
            line-height: 1.5;
         }

         /* ─── Header ─────────────────────────────────────── */
         .hdr {
            background: var(--white);
            border-bottom: 1px solid var(--stroke-color-02);
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            position: sticky;
            top: 0;
            z-index: 10;
            backdrop-filter: blur(12px);
         }
         .logo-mark {
            width: 26px;
            height: 26px;
            border-radius: 6px;
            background: var(--text-color-01);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
         }
         .logo-mark svg {
            display: block;
         }
         .hdr-name {
            font-size: 14px;
            font-weight: 600;
            letter-spacing: -0.3px;
            color: var(--text-color-01);
         }
         .hdr-sep {
            width: 1px;
            height: 16px;
            background: var(--stroke-color-02);
            margin: 0 2px;
         }
         .hdr-secure {
            display: flex;
            align-items: center;
            gap: 5px;
            font-size: 12px;
            color: var(--text-color-02);
            font-weight: 500;
         }

         /* ─── Page ────────────────────────────────────────── */
         .page {
            max-width: 420px;
            margin: 0 auto;
            padding: 28px 16px 40px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            animation: fadeUp 0.35s ease both;
         }
         @keyframes fadeUp {
            from {
               opacity: 0;
               transform: translateY(10px);
            }
            to {
               opacity: 1;
               transform: translateY(0);
            }
         }

         /* ─── Product card ────────────────────────────────── */
         .prod-card {
            background: var(--white);
            border: 1px solid var(--stroke-color-02);
            border-radius: var(--radius);
            padding: 22px 20px;
            box-shadow: var(--shadow-sm);
            text-align: center;
            margin-bottom: 16px;
         }
         .prod-card-name {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: -0.4px;
            line-height: 1.2;
            color: var(--text-color-01);
         }
         .prod-card-sub {
            font-size: 13px;
            color: var(--text-color-02);
            margin-top: 4px;
            font-weight: 500;
         }
         .price-main {
            font-size: 34px;
            font-weight: 700;
            letter-spacing: -0.8px;
            color: var(--text-color-01);
            line-height: 1;
            margin-top: 16px;
         }
         .price-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-color-02);
            margin-top: 6px;
         }
         .price-old-line {
            font-size: 13px;
            color: var(--text-color-02);
         }
         .price-old {
            text-decoration: line-through;
            color: #dc2626;
            font-weight: 600;
         }
         .save-text {
            font-size: 15px;
            font-weight: 600;
            color: #dc2626;
            margin-top: 8px;
         }
         .cd-divider {
            height: 1px;
            background: linear-gradient(
               90deg,
               transparent 0%,
               rgba(0, 0, 0, 0.12) 5%,
               rgba(0, 0, 0, 0.12) 95%,
               transparent 100%
            );
            margin: 18px 0 8px;
         }
         .countdown-box {
            text-align: center;
            padding: 8px 0;
         }
         .countdown-label {
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            color: var(--text-color-02);
            margin-bottom: 6px;
         }
         .countdown-timer {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            color: #dc2626;
         }
         .cd-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            min-width: 44px;
         }
         .cd-item .cd-flip span {
            font-size: 26px;
            font-weight: 700;
            line-height: 32px;
         }
         .cd-item small {
            font-size: 9px;
            text-transform: uppercase;
            color: var(--text-color-02);
            margin-top: 2px;
         }
         .cd-sep {
            font-size: 20px;
            font-weight: 700;
            color: #dc2626;
            opacity: 0.55;
            margin-top: -10px;
         }
         .cd-flip {
            height: 32px;
            overflow: hidden;
            display: inline-block;
            vertical-align: bottom;
            position: relative;
         }
         .cd-flip-track {
            display: flex;
            flex-direction: column;
            transform: translateY(0);
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
         }
         .cd-flip-track.slide {
            transform: translateY(-50%);
         }
         .cd-flip-track span {
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            line-height: 32px;
         }

         /* ─── Country row ─────────────────────────────────── */
         .country-wrap {
            background: var(--white);
            border: 1px solid var(--stroke-color-02);
            border-radius: var(--radius);
            padding: 14px 16px;
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            gap: 10px;
         }
         .country-label {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-color-02);
            white-space: nowrap;
            flex-shrink: 0;
         }
         .country-select-wrap {
            flex: 1;
            position: relative;
         }
         select {
            width: 100%;
            border: 1px solid var(--stroke-color-02);
            border-radius: var(--radius-sm);
            padding: 8px 30px 8px 11px;
            font-family: "Inter Tight", system-ui, sans-serif;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-color-01);
            outline: none;
            -webkit-appearance: none;
            appearance: none;
            cursor: pointer;
            transition:
               border-color 0.15s,
               box-shadow 0.15s;
         }
         select:focus {
            border-color: var(--stroke-color-01);
            box-shadow: 0 0 0 3px rgba(55, 88, 249, 0.12);
         }
         select option {
            background: #fff;
         }

         .custom-select {
            position: relative;
            width: 100%;
         }
         .custom-select-trigger {
            width: 100%;
            border: 1px solid var(--stroke-color-02);
            border-radius: var(--radius-sm);
            padding: 8px 30px 8px 11px;
            background: #fff;
            font-family: "Inter Tight", system-ui, sans-serif;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-color-01);
            display: flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            text-align: left;
            outline: none;
            transition: border-color 0.15s, box-shadow 0.15s;
         }
         .custom-select-trigger:focus {
            border-color: var(--stroke-color-01);
            box-shadow: 0 0 0 3px rgba(55, 88, 249, 0.12);
         }
         .custom-select-chevron {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-color-02);
            pointer-events: none;
         }
         .custom-select-options {
            position: absolute;
            top: calc(100% + 4px);
            left: 0;
            right: 0;
            background: #fff;
            border: 1px solid var(--stroke-color-02);
            border-radius: var(--radius-sm);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            list-style: none;
            max-height: 260px;
            overflow-y: auto;
            z-index: 10;
            display: none;
            padding: 4px 0;
         }
         .custom-select-options.open {
            display: block;
         }
         .custom-select-options li {
            padding: 8px 11px;
            display: flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-color-01);
         }
         .custom-select-options li:hover,
         .custom-select-options li.active {
            background: var(--bg-color-01);
         }
         .custom-select .flag-icon {
            width: 18px;
            height: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            line-height: 1;
            flex-shrink: 0;
         }
         .custom-select img {
            width: 18px;
            height: 14px;
            object-fit: cover;
            border-radius: 2px;
            flex-shrink: 0;
         }

         /* ─── Section header ──────────────────────────────── */
         .section-header {
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: var(--text-color-02);
            padding: 0 2px;
         }

         /* ─── Methods container ───────────────────────────── */
         .methods {
            display: flex;
            flex-direction: column;
            gap: 6px;
         }

         /* ─── Single method card ──────────────────────────── */
         .method {
            background: var(--white);
            border: 1px solid var(--stroke-color-02);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition:
               border-color 0.15s,
               box-shadow 0.15s;
            cursor: pointer;
            user-select: none;
         }
         .method:hover {
            border-color: var(--stroke-color-03);
            box-shadow: var(--shadow);
         }
         .method.active {
            border-color: var(--stroke-color-02);
            box-shadow: var(--shadow-md);
         }

         .method-row {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 16px;
         }
         .micon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
            transition: background 0.15s;
            line-height: 1;
         }
         .method.active .micon-inner {
            filter: invert(1);
         }
         .minfo {
            flex: 1;
            min-width: 0;
         }
         .mname {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-color-01);
            letter-spacing: -0.2px;
         }
         .msub {
            font-size: 12px;
            color: var(--text-color-02);
            margin-top: 1px;
            font-weight: 400;
         }
         .mbadge {
            font-size: 10px;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            padding: 2px 7px;
            border-radius: 4px;
            background: var(--bg-color-01);
            color: var(--text-color-02);
            border: 1px solid var(--stroke-color-02);
            flex-shrink: 0;
         }
         .method.active .mbadge {
            background: var(--stroke-color-01);
            color: var(--white);
            border-color: var(--stroke-color-01);
         }
         .mchevron {
            width: 16px;
            height: 16px;
            flex-shrink: 0;
            color: var(--text-color-02);
            transition:
               transform 0.2s ease,
               color 0.15s;
         }
         .method.active .mchevron {
            transform: rotate(90deg);
         }

         /* ─── Detail panel ────────────────────────────────── */
         .detail {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.28s cubic-bezier(0.4, 0, 0.2, 1);
         }
         .method.active .detail {
            max-height: 600px;
         }
         .detail-inner {
            border-top: 1px solid var(--stroke-color-02);
            padding: 14px 16px 16px;
            background: var(--white);
         }

         /* ─── Detail rows ─────────────────────────────────── */
         .drow {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            padding: 7px 0;
            border-bottom: 1px solid var(--stroke-color-02);
         }
         .drow:last-child {
            border-bottom: none;
            padding-bottom: 0;
         }
         .drow-col {
            flex-direction: column;
            align-items: flex-start;
            gap: 5px;
            padding: 8px 0;
         }
         .dl {
            font-size: 12px;
            color: var(--text-color-02);
            font-weight: 500;
         }
         .dv {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-color-01);
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: flex-end;
            text-align: right;
         }
         .dv-amount {
            font-size: 17px;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--text-color-01);
         }
         .dv-addr {
            font-size: 11px;
            word-break: break-all;
            line-height: 1.5;
            color: var(--text-color-02);
            text-align: left;
            font-weight: 500;
         }

         /* ─── Copy button ─────────────────────────────────── */
         .cpb {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: var(--white);
            border: 1px solid var(--stroke-color-02);
            border-radius: 5px;
            padding: 3px 9px;
            font-size: 11px;
            font-weight: 600;
            color: var(--text-color-02);
            cursor: pointer;
            font-family: "Inter Tight", system-ui, sans-serif;
            transition:
               background 0.12s,
               color 0.12s,
               border-color 0.12s;
            white-space: nowrap;
            flex-shrink: 0;
         }
         .cpb:hover {
            background: var(--stroke-color-01);
            color: var(--white);
            border-color: var(--stroke-color-01);
         }
         .cpb.done {
            background: var(--green-bg);
            color: var(--green);
            border-color: var(--green-bd);
         }

         /* ─── CTA buttons inside detail ──────────────────── */
         .cta-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            width: 100%;
            padding: 11px 16px;
            margin-top: 12px;
            border: none;
            border-radius: var(--radius-sm);
            font-family: "Inter Tight", system-ui, sans-serif;
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            text-decoration: none;
            transition:
               opacity 0.15s,
               transform 0.1s,
               box-shadow 0.15s;
            letter-spacing: -0.1px;
         }
         .cta-btn:active {
            transform: scale(0.98);
         }

         .cta-wa {
            background: var(--stroke-color-01);
            color: #fff;
            box-shadow: 0 1px 2px rgba(55, 88, 249, 0.3);
         }
         .cta-wa:hover {
            opacity: 0.92;
            box-shadow: 0 4px 12px rgba(55, 88, 249, 0.25);
         }
         .cta-wa:disabled {
            background: #d1d5db;
            color: #6b7280;
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
            cursor: not-allowed;
            opacity: 1;
            position: relative;
         }
         .cta-wa:disabled:hover {
            opacity: 1;
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
         }
         .cta-wa:disabled::after {
            content: "Copy payment details first";
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%);
            background: #111928;
            color: #fff;
            padding: 6px 10px;
            border-radius: 4px;
            font-size: 12px;
            white-space: nowrap;
            margin-bottom: 8px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.2s;
            z-index: 10;
         }
         .cta-wa:disabled:hover::after {
            opacity: 1;
         }
         .cta-wa:disabled::before {
            content: "";
            position: absolute;
            bottom: calc(100% - 2px);
            left: 50%;
            transform: translateX(-50%);
            border: 4px solid transparent;
            border-top-color: #111928;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.2s;
            z-index: 10;
         }
         .cta-wa:disabled:hover::before {
            opacity: 1;
         }

         .cta-card {
            background: var(--stroke-color-01);
            color: var(--white);
            box-shadow: var(--shadow-sm);
         }
         .cta-card:hover {
            opacity: 0.88;
         }

         /* ─── Separator ──────────────────────────────────── */
         .sep {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 11px;
            color: var(--text-color-02);
            font-weight: 500;
            margin: 2px 0;
         }
         .sep::before,
         .sep::after {
            content: "";
            flex: 1;
            height: 1px;
            background: var(--stroke-color-02);
         }

         /* ─── Footer trust ───────────────────────────────── */
         .trust {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            padding-top: 4px;
         }
         .ti {
            display: flex;
            align-items: center;
            gap: 5px;
            font-size: 11px;
            color: var(--text-color-02);
            font-weight: 500;
         }
         .ti-dot {
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: var(--stroke-color-02);
         }

         /* ─── Shimmer on active method row ──────────────── */
         @keyframes shimmer {
            0% {
               background-position: 200% 0;
            }
            100% {
               background-position: -200% 0;
            }
         }

         /* ─── Stagger animations ─────────────────────────── */
         .method {
            animation: fadeUp 0.3s ease both;
         }
         .method:nth-child(1) {
            animation-delay: 0.05s;
         }
         .method:nth-child(2) {
            animation-delay: 0.1s;
         }
         .method:nth-child(3) {
            animation-delay: 0.15s;
         }
         .method:nth-child(4) {
            animation-delay: 0.2s;
         }
         .method:nth-child(5) {
            animation-delay: 0.25s;
         }

         /* ─── Responsive ─────────────────────────────────── */
         @media (max-width: 380px) {
            .price-main {
               font-size: 28px;
            }
            .cd-item .cd-flip span {
               font-size: 22px;
               line-height: 28px;
            }
            .cd-flip,
            .cd-flip-track span {
               height: 28px;
               line-height: 28px;
            }
            .cd-item {
               min-width: 36px;
            }
            body {
               font-size: 13px;
            }
         }