:root {
            --brand-50: #eef2ff;
            --brand-100: #e0e7ff;
            --brand-500: #6366f1;
            --brand-600: #4f46e5;
            --brand-700: #4338ca;
            --violet-500: #8b5cf6;
            --emerald-500: #10b981;
            --slate-50: #f8fafc;
            --slate-100: #f1f5f9;
            --slate-200: #e2e8f0;
            --slate-300: #cbd5e1;
            --slate-400: #94a3b8;
            --slate-500: #64748b;
            --slate-700: #334155;
            --slate-900: #0f172a;
        }
        * { margin:0; padding:0; box-sizing:border-box; }
        html { scroll-behavior:smooth; }
        body {
            font-family:'Inter',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
            background: var(--slate-50);
            color: var(--slate-900);
            line-height: 1.6;
            height: 100vh;
            overflow: hidden;
        }
        button { font-family: inherit; }

        .split-layout { display: flex; width: 100%; height: 100vh; }

        .left-panel {
            position: relative;
            flex: 1;
            background: linear-gradient(180deg, #f5f7ff 0%, #f8fafc 40%, #f8fafc 100%);
            border-right: 1px solid var(--slate-200);
            display: flex;
            flex-direction: column;
            overflow: hidden;
        }
        .left-panel-scroll {
            flex: 1;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
        }
        .left-panel-scroll::-webkit-scrollbar { width: 6px; }
        .left-panel-scroll::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }

        .navbar {
            background: rgba(255,255,255,.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--slate-200);
            padding: 0 32px;
            height: 64px;
            display: flex;
            align-items: center;
            gap: 28px;
            flex-shrink: 0;
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .nav-left { display: flex; align-items: center; gap: 28px; }
        .navbar .logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
        .navbar .nav-links { display: flex; gap: 20px; align-items: center; }
        .navbar .nav-links a {
            text-decoration: none; color: var(--slate-500); font-size: .85rem;
            font-weight: 500; padding: 6px 0; border-bottom: 2px solid transparent;
            transition: color .15s, border-color .15s;
        }
        .navbar .nav-links a:hover { color: var(--slate-900); border-bottom-color: var(--brand-500); }
        .navbar .nav-links a.active { color: var(--brand-600); border-bottom-color: var(--brand-600); font-weight: 600; }
        .navbar .right-area { margin-left: auto; display: flex; gap: 12px; align-items: center; }

        .account-dropdown { position: relative; display: inline-block; }
        .account-btn {
            background: #fff; border: 1px solid var(--slate-200);
            padding: 6px 14px; border-radius: 999px; cursor: pointer;
            font-size: .85rem; font-weight: 500;
            display: flex; align-items: center; gap: 7px;
            color: var(--slate-900); transition: all .2s; white-space: nowrap;
        }
        .account-btn:hover { border-color: #cbd5e1; background: #fafbfc; }
        .account-btn i { color: var(--brand-600); }

        .account-menu {
            position: absolute; right: 0; top: 48px;
            background: #fff; border-radius: 14px;
            box-shadow: 0 12px 28px -4px rgba(0,0,0,.1), 0 4px 12px -4px rgba(0,0,0,.06);
            width: 340px; z-index: 200; display: none;
            overflow: hidden; border: 1px solid var(--slate-200);
            animation: dropdownIn .18s ease-out;
        }
        @keyframes dropdownIn { from{opacity:0;transform:translateY(-6px) scale(.98)} to{opacity:1;transform:translateY(0) scale(1)} }
        .account-menu.active { display: block; }
        .account-header { padding: 12px 16px; background: var(--slate-100); border-bottom: 1px solid var(--slate-200); font-weight: 600; font-size: .85rem; }
        .account-list { max-height: 180px; overflow-y: auto; }
        .account-item {
            display: flex; justify-content: space-between; align-items: center;
            padding: 10px 16px; cursor: pointer;
            border-bottom: 1px solid var(--slate-100); transition: background .15s;
        }
        .account-item:hover { background: var(--slate-100); }
        .account-item.active { background: var(--brand-50); font-weight: 500; color: var(--brand-600); }
        .account-nick { font-size: .85rem; }
        .account-actions { display: flex; gap: 6px; }
        .account-actions button { background: none; border: none; cursor: pointer; color: var(--slate-400); font-size: .75rem; padding: 4px 6px; border-radius: 4px; transition: all .15s; }
        .account-actions button:hover { color: #ef4444; background: rgba(239,68,68,.08); }
        .subscriptions-section { border-top: 1px solid var(--slate-200); background: #fafbfc; }
        .subs-header { padding: 10px 16px; font-size: .75rem; font-weight: 600; color: var(--slate-500); border-bottom: 1px solid var(--slate-200); }
        .sub-item { display: flex; justify-content: space-between; align-items: center; padding: 8px 16px; font-size: .8rem; border-bottom: 1px solid var(--slate-100); gap: 8px; }
        .sub-info { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0; }
        .sub-info i { color: var(--brand-600); font-size: 1rem; flex-shrink: 0; }
        .sub-info span:nth-child(2) { white-space: nowrap; }
        .sub-info span:nth-child(3) { font-size: .65rem; color: #94a3b8; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
        .delete-sub { background: none; border: none; color: #ef4444; cursor: pointer; font-size: .75rem; opacity: .6; transition: opacity .15s; padding: 4px; flex-shrink: 0; }
        .delete-sub:hover { opacity: 1; }
        .delete-sub:disabled { opacity: .3; cursor: not-allowed; }
        .account-footer { padding: 10px 12px; border-top: 1px solid var(--slate-200); display: flex; gap: 8px; }
        .account-footer button { flex: 1; padding: 9px; border-radius: 8px; border: none; cursor: pointer; font-size: .82rem; font-weight: 500; transition: all .2s; }
        .btn-add { background: var(--brand-600); color: #fff; }
        .btn-add:hover { background: var(--brand-700); }

        /* ============ 内容区 ============ */
        .left-content { flex: 1; max-width: 1180px; width: 100%; margin: 0 auto; padding: 40px 32px 72px; }

        .page-hero { text-align: center; margin-bottom: 36px; position: relative; }
        .page-hero::before {
            content: "";
            position: absolute;
            top: -40px; left: 50%; transform: translateX(-50%);
            width: 420px; height: 320px;
            background: radial-gradient(ellipse at center, rgba(99,102,241,.10) 0%, transparent 65%);
            pointer-events: none;
            z-index: 0;
        }
        .page-hero > * { position: relative; z-index: 1; }
        .hero-tag {
            display: inline-flex; align-items: center; gap: 6px;
            background: linear-gradient(135deg, #eef2ff, #f5f3ff);
            color: var(--brand-600);
            font-size: .72rem; font-weight: 700;
            letter-spacing: 1px;
            padding: 6px 14px;
            border-radius: 999px;
            border: 1px solid var(--brand-100);
            margin-bottom: 18px;
        }
        .hero-tag i { font-size: .7rem; }
        .page-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -1px;
            margin-bottom: 14px;
            line-height: 1.15;
        }
        .page-hero h1 .gradient {
            background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .page-hero p {
            font-size: 1rem;
            color: var(--slate-500);
            max-width: 560px;
            margin: 0 auto;
        }

        .billing-toggle {
            display: flex; justify-content: center;
            margin: 28px 0 36px;
        }
        .toggle-switch {
            background: var(--slate-100);
            border-radius: 999px;
            display: inline-flex;
            gap: 4px;
            padding: 4px;
            border: 1px solid var(--slate-200);
            box-shadow: inset 0 1px 3px rgba(0,0,0,.03);
        }
        .toggle-option {
            padding: 10px 26px;
            border-radius: 999px;
            background: transparent;
            border: none;
            cursor: pointer;
            font-weight: 500;
            color: var(--slate-500);
            font-size: .88rem;
            transition: all .25s cubic-bezier(.4,0,.2,1);
        }
        .toggle-option.active {
            background: #fff;
            color: var(--brand-600);
            box-shadow: 0 2px 6px rgba(99,102,241,.15);
            font-weight: 600;
        }
        .save-badge {
            font-size: .68rem;
            background: #dcfce7;
            color: #166534;
            padding: 2px 8px;
            border-radius: 999px;
            font-weight: 700;
            margin-left: 4px;
        }

        /* ============ 套餐网格 ============ */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-bottom: 56px;
            align-items: stretch;
        }
        .plan-card {
            background: #fff;
            border: 1.5px solid var(--slate-200);
            border-radius: 24px;
            padding: 28px 20px 24px;
            display: flex;
            flex-direction: column;
            box-shadow: 0 1px 2px rgba(15,23,42,.03), 0 4px 12px -4px rgba(15,23,42,.04);
            transition: box-shadow .3s cubic-bezier(.4,0,.2,1), transform .3s cubic-bezier(.4,0,.2,1), border-color .3s;
            position: relative;
            overflow: visible;
        }
        .plan-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 40px -16px rgba(15,23,42,.12), 0 8px 16px -8px rgba(15,23,42,.06);
            border-color: var(--slate-300);
        }
        .plan-card.popular {
            border-color: var(--brand-500);
            box-shadow: 0 8px 24px -8px rgba(99,102,241,.25);
        }
        .plan-card.popular:hover {
            box-shadow: 0 24px 48px -16px rgba(99,102,241,.30), 0 8px 20px -8px rgba(99,102,241,.15);
            border-color: var(--brand-500);
        }
        .plan-card.current {
            border-color: var(--brand-600);
            background: linear-gradient(180deg, #ffffff 0%, #fafaff 100%);
            box-shadow: 0 8px 24px -8px rgba(99,102,241,.28);
        }

        .popular-tag {
            position: absolute;
            top: -12px; left: 50%; transform: translateX(-50%);
            background: linear-gradient(135deg, #6366f1, #8b5cf6);
            color: #fff;
            font-size: .7rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 999px;
            letter-spacing: .3px;
            box-shadow: 0 6px 16px rgba(99,102,241,.35);
            white-space: nowrap;
        }
        .current-tag {
            position: absolute;
            top: -12px; left: 50%; transform: translateX(-50%);
            background: linear-gradient(135deg, #10b981, #059669);
            color: #fff;
            font-size: .7rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 999px;
            letter-spacing: .3px;
            box-shadow: 0 6px 16px rgba(16,185,129,.35);
            white-space: nowrap;
        }

        .plan-name {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 4px;
            letter-spacing: -.3px;
        }
        .plan-sub {
            font-size: .84rem;
            color: var(--slate-500);
            margin-bottom: 20px;
        }
        .price {
            display: flex;
            align-items: baseline;
            gap: 2px;
            margin-bottom: 6px;
            flex-wrap: wrap;
        }
        .price .currency {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--slate-700);
            align-self: flex-start;
            margin-top: 4px;
        }
        .price .amount {
            font-size: 2.4rem;
            font-weight: 800;
            letter-spacing: -1.5px;
            line-height: 1;
        }
        .price .unit {
            font-size: .9rem;
            font-weight: 500;
            color: var(--slate-500);
            margin-left: 2px;
        }
        .price .per-seat {
            font-size: .72rem;
            color: var(--brand-600);
            background: var(--brand-50);
            padding: 3px 5px;
            border-radius: 999px;
            font-weight: 600;
        }
        .price .strike {
            font-size: .9rem;
            color: var(--slate-400);
            text-decoration: line-through;
            margin-left: 8px;
            font-weight: 500;
        }
        .price-note {
            font-size: .78rem;
            color: var(--slate-400);
            margin-bottom: 22px;
        }

        .seat-selector {
            background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
            border: 1px solid var(--slate-200);
            border-radius: 14px;
            padding: 12px 12px;
            margin-bottom: 22px;
        }
        .seat-label {
            font-size: .74rem;
            font-weight: 600;
            color: var(--slate-700);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .seat-label::before { content: "👥"; font-size: .85rem; }
        .seat-control {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border-radius: 10px;
            padding: 4px;
            border: 1px solid var(--slate-200);
        }
        .seat-btn {
            width: 28px; height: 28px;
            border-radius: 8px;
            border: none;
            background: var(--slate-100);
            color: var(--slate-700);
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all .15s;
            flex-shrink: 0;
        }
        .seat-btn:hover { background: var(--slate-200); }
        .seat-btn:active { transform: scale(.94); }
        .seat-input {
            flex: 1;
            border: none;
            outline: none;
            text-align: center;
            font-size: 1rem;
            font-weight: 700;
            color: var(--slate-900);
            background: transparent;
            -moz-appearance: textfield;
            min-width: 0;
        }
        .seat-input::-webkit-outer-spin-button,
        .seat-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
        .seat-total {
            margin-top: 10px;
            font-size: .76rem;
            color: var(--slate-500);
            display: flex;
            justify-content: space-between;
            align-items: baseline;
        }
        .seat-total strong {
            font-size: 1rem;
            color: var(--slate-900);
            font-weight: 800;
        }
        .seat-total strong span {
            font-size: .74rem;
            font-weight: 500;
            color: var(--slate-500);
            margin-left: 2px;
        }

        .features {
            list-style: none;
            padding: 0;
            margin: 0 0 26px;
            flex: 1;
        }
        .features li {
            padding: 7px 0 7px 26px;
            background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2310b981' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>") left 8px no-repeat;
            background-size: 14px;
            font-size: .8rem;
            color: var(--slate-700);
            line-height: 1.55;
        }
        .features li .highlight { color: var(--brand-600); font-weight: 700; }

        .btn-primary {
            width: 100%;
            padding: 14px;
            border: none;
            border-radius: 999px;
            font-size: .95rem;
            font-weight: 600;
            cursor: pointer;
            transition: all .25s cubic-bezier(.4,0,.2,1);
            background: var(--slate-900);
            color: #fff;
            letter-spacing: .2px;
        }
        .btn-primary:hover {
            background: #020617;
            transform: translateY(-1px);
            box-shadow: 0 8px 16px -8px rgba(15,23,42,.4);
        }
        .btn-primary:active { transform: translateY(0); }
        .btn-primary:disabled {
            opacity: .55;
            cursor: not-allowed;
            transform: none !important;
            box-shadow: none !important;
            background: var(--slate-300);
            color: #fff;
        }

        .btn-primary.btn-upgrade {
            background: linear-gradient(135deg, #10b981, #059669);
            box-shadow: 0 4px 12px rgba(16,185,129,.3);
        }
        .btn-primary.btn-upgrade:hover {
            background: linear-gradient(135deg, #059669, #047857);
            box-shadow: 0 8px 20px rgba(16,185,129,.4);
        }
        .btn-primary.btn-downgrade {
            background: linear-gradient(135deg, #f59e0b, #d97706);
            box-shadow: 0 4px 12px rgba(245,158,11,.3);
        }
        .btn-primary.btn-downgrade:hover {
            background: linear-gradient(135deg, #d97706, #b45309);
            box-shadow: 0 8px 20px rgba(245,158,11,.4);
        }

        .plan-card.popular .btn-primary:not(.btn-upgrade):not(.btn-downgrade):not(:disabled) {
            background: linear-gradient(135deg, #4f46e5, #6366f1);
            box-shadow: 0 4px 12px rgba(99,102,241,.35);
        }
        .plan-card.popular .btn-primary:not(.btn-upgrade):not(.btn-downgrade):not(:disabled):hover {
            background: linear-gradient(135deg, #4338ca, #4f46e5);
            box-shadow: 0 8px 20px rgba(99,102,241,.45);
            transform: translateY(-1px);
        }

        .footer-terms {
            text-align: center;
            font-size: .78rem;
            color: var(--slate-400);
            padding-top: 28px;
            margin-top: 8px;
            border-top: 1px solid var(--slate-200);
        }
        .footer-terms a { color: var(--brand-600); text-decoration: underline; text-underline-offset: 2px; }

        /* ============ 右侧日志面板 ============ */
        .right-panel {
            width: 480px;
            background: linear-gradient(180deg, #0f172a 0%, #0b1220 100%);
            color: #e2e8f0;
            display: flex;
            flex-direction: column;
            overflow: hidden;
            font-family: 'JetBrains Mono','Monaco','Menlo',monospace;
            font-size: 13px;
            flex-shrink: 0;
            transition: width .3s;
        }
        .right-panel.log-hidden { width: 60px; min-width: 60px; }
        .right-panel.log-hidden .api-header span { display: none; }
        .right-panel.log-hidden .api-header .header-actions { flex-direction: column; gap: 4px; }
        .right-panel.log-hidden .api-header .header-actions .clear-btn { font-size: 0; padding: 6px 10px; }
        .right-panel.log-hidden .api-header .header-actions .clear-btn i { font-size: 1rem; margin: 0; }
        .right-panel.log-hidden .api-log { display: none !important; }
        .api-header {
            background: rgba(15,23,42,.8);
            backdrop-filter: blur(10px);
            padding: 16px 20px;
            font-weight: 600;
            border-bottom: 1px solid #1e293b;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-shrink: 0;
            gap: 8px;
            min-height: 60px;
        }
        .api-header i { margin-right: 8px; color: #60a5fa; }
        .api-header .header-actions { display: flex; gap: 6px; align-items: center; flex-shrink: 0; }
        .clear-btn {
            background: #1e293b; border: none; color: #94a3b8;
            padding: 6px 14px; border-radius: 6px; cursor: pointer;
            font-size: 12px; transition: all .2s;
            white-space: nowrap; display: flex; align-items: center; gap: 4px;
        }
        .clear-btn:hover { background: #334155; color: #f1f5f9; }
        .clear-btn.toggle-log-btn { min-width: 48px; justify-content: center; }
        .clear-btn.toggle-log-btn i { margin-right: 0; }
        .api-log { flex: 1; overflow-y: auto; padding: 16px; display: block; }
        .api-log::-webkit-scrollbar { width: 6px; }
        .api-log::-webkit-scrollbar-thumb { background: #334155; border-radius: 3px; }
        .api-log .log-entry {
            margin-bottom: 16px;
            border-left: 3px solid #4f46e5;
            padding: 14px;
            background: rgba(30,41,59,.5);
            border-radius: 8px;
            transition: all .2s;
        }
        .api-log .log-entry:hover { background: rgba(30,41,59,.8); border-left-color: #6366f1; }
        .api-log .log-title {
            font-weight: 700; color: #fbbf24; margin-bottom: 8px;
            display: flex; justify-content: space-between; align-items: center;
            flex-wrap: wrap; gap: 6px;
        }
        .api-log .log-method {
            color: #34d399; font-size: .8rem;
            background: rgba(52,211,153,.1); padding: 2px 8px;
            border-radius: 4px; font-weight: 500;
        }
        .api-log .log-url { color: #94a3b8; font-size: 11px; word-break: break-all; margin-bottom: 8px; }
        .api-log .log-req, .api-log .log-res {
            background: rgba(11,18,32,.8); padding: 10px; border-radius: 4px;
            margin: 8px 0; overflow-x: auto; white-space: pre-wrap;
            font-size: 11px; line-height: 1.5;
        }
        .api-log .log-status { font-size: 11px; margin-top: 8px; color: #cbd5e1; }
        .api-log .log-status .done { color: #34d399; }
        .api-log .log-status .error { color: #f87171; }

        /* ============ 弹窗 ============ */
        .payment-modal, #newAccountModal, .payment-result-modal, #previewConfirmModal {
            display: none;
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(15,23,42,.55);
            backdrop-filter: blur(6px);
            z-index: 300;
            justify-content: center;
            align-items: center;
            animation: fadeIn .2s ease-out;
        }
        .payment-modal.active,
        #newAccountModal.active,
        .payment-result-modal.active,
        #previewConfirmModal.active { display: flex; }
        @keyframes fadeIn { from{opacity:0} to{opacity:1} }
        @keyframes modalIn {
            from { opacity: 0; transform: translateY(18px) scale(.96); }
            to { opacity: 1; transform: translateY(0) scale(1); }
        }

        /* ⭐ 预览确认弹窗 z-index 更高 */
        #previewConfirmModal { z-index: 400; }

        .payment-modal-content {
            background: #fff;
            border-radius: 20px;
            padding: 28px;
            box-shadow: 0 24px 48px -6px rgba(0,0,0,.15);
            max-width: 860px;
            width: 90%;
            max-height: 90%;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            animation: modalIn .3s cubic-bezier(.4,0,.2,1);
        }
        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
        }
        .modal-header h3 { font-size: 1.15rem; font-weight: 700; margin: 0; color: var(--slate-900); }
        .modal-close-btn {
            background: transparent; border: none; font-size: 1.4rem;
            line-height: 1; cursor: pointer; color: var(--slate-400);
            padding: 4px 8px; border-radius: 6px;
        }
        .modal-close-btn:hover { color: var(--slate-900); background: var(--slate-100); }
        .modal-body { display: flex; gap: 32px; flex: 1; }
        .payment-methods-column { flex: 1.2; display: flex; flex-direction: column; gap: 12px; }
        .quick-pay-section { display: flex; flex-direction: column; gap: 12px; }
        .payment-method-item { min-height: 44px; padding: 0; background: transparent; border: none; }
        #applepay-frame, #googlepay-frame { display: none; width: 240px; max-width: 100%; height: 48px; min-height: 48px; align-items: center; justify-content: center; align-self: center; overflow: hidden; }
        #applepay-frame.active, #googlepay-frame.active { display: flex; }
        .divider { display: flex; align-items: center; gap: 16px; color: var(--slate-400); font-size: .8rem; margin: 4px 0; }
        .divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--slate-200); }
        .card-form-section {
            border: 1px solid var(--slate-200);
            border-radius: 12px;
            padding: 4px;
            background: #fff;
            transition: border-color .2s;
        }
        .card-form-section:focus-within { border-color: var(--brand-500); box-shadow: 0 0 0 2px rgba(99,102,241,.1); }
        .order-summary-column {
            flex: 0.8;
            background: var(--slate-50);
            border-radius: 16px;
            padding: 24px;
            display: flex;
            flex-direction: column;
            border: 1px solid var(--slate-200);
        }
        .order-summary-column h4 { font-size: 1.05rem; font-weight: 700; margin: 0 0 16px; color: var(--slate-900); }
        .summary-features { margin-bottom: 16px; display: flex; flex-direction: column; gap: 10px; padding: 0; list-style: none; }
        .summary-features li { font-size: .82rem; color: var(--slate-700); display: flex; align-items: flex-start; gap: 8px; line-height: 1.5; }
        .summary-features li i { color: var(--brand-600); font-size: .8rem; margin-top: 4px; flex-shrink: 0; }
        .summary-divider { height: 1px; background: var(--slate-200); margin: 16px 0; }
        .summary-row { display: flex; justify-content: space-between; font-size: .85rem; margin-bottom: 12px; color: var(--slate-500); }
        .summary-total { display: flex; justify-content: space-between; font-size: 1rem; font-weight: 700; margin: 20px 0 24px; color: var(--slate-900); }
        .summary-benefits {
            background: #fff; border-radius: 12px; padding: 14px 16px;
            margin: 4px 0 4px; border: 1px dashed var(--brand-100);
        }
        .summary-benefits-title {
            font-size: .78rem; font-weight: 700; color: var(--brand-600);
            margin-bottom: 10px; display: flex; align-items: center; gap: 6px;
        }
        .summary-benefits-title i { font-size: .8rem; }
        .summary-benefits-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 7px; }
        .summary-benefits-list li {
            font-size: .78rem; color: var(--slate-700);
            display: flex; align-items: flex-start; gap: 8px; line-height: 1.5;
        }
        .summary-benefits-list li i { color: var(--emerald-500); font-size: .68rem; margin-top: 5px; flex-shrink: 0; }
        .btn-pay-subscribe {
            width: 100%;
            background: linear-gradient(135deg, var(--brand-600), var(--violet-500));
            color: #fff;
            border: none;
            padding: 14px;
            border-radius: 999px;
            font-weight: 600;
            font-size: .95rem;
            cursor: pointer;
            transition: all .2s;
            margin-top: auto;
            box-shadow: 0 4px 12px rgba(99,102,241,.3);
        }
        .btn-pay-subscribe:hover { filter: brightness(1.05); transform: translateY(-1px); box-shadow: 0 6px 16px rgba(99,102,241,.4); }
        .btn-pay-subscribe:disabled { background: #cbd5e1; cursor: not-allowed; box-shadow: none; transform: none; }

        #newAccountModal>div {
            background: #fff; border-radius: 20px; padding: 28px;
            box-shadow: 0 24px 48px -6px rgba(0,0,0,.12);
            max-width: 440px; width: 90%;
            animation: modalIn .3s cubic-bezier(.4,0,.2,1);
        }
        #newAccountModal h3 { margin-bottom: 14px; font-size: 1.15rem; font-weight: 700; }
        #newAccountModal p { margin: 10px 0; font-size: .85rem; color: var(--slate-500); }
        #newAccountNick {
            width: 100%; padding: 12px 16px; border-radius: 10px;
            border: 1.5px solid var(--slate-200); font-size: .9rem;
            transition: all .2s; outline: none; margin: 8px 0;
        }
        #newAccountNick:focus { border-color: var(--brand-500); box-shadow: 0 0 0 3px rgba(99,102,241,.1); }
        .modal-actions { display: flex; gap: 1rem; margin-top: 1.5rem; }
        .modal-actions button {
            flex: 1; padding: 12px; border-radius: 999px;
            font-weight: 600; cursor: pointer; border: none;
            transition: all .2s; font-size: .9rem;
        }
        #confirmNewAccount { background: var(--brand-600); color: #fff; }
        #confirmNewAccount:hover { background: var(--brand-700); }
        #cancelNewAccount { background: var(--slate-100); color: var(--slate-500); }
        #cancelNewAccount:hover { background: var(--slate-200); }

        .payment-result-content {
            background: #fff; border-radius: 24px;
            padding: 40px 32px 28px; max-width: 480px; width: 90%;
            box-shadow: 0 32px 64px -12px rgba(0,0,0,.2);
            text-align: center;
            animation: modalIn .3s cubic-bezier(.4,0,.2,1);
            position: relative;
        }
        .result-icon {
            width: 76px; height: 76px; border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 20px; font-size: 2.4rem; font-weight: 700; color: #fff;
        }
        .result-icon.success { background: linear-gradient(135deg, #10b981, #059669); box-shadow: 0 8px 24px rgba(16,185,129,.4); }
        .result-icon.failed { background: linear-gradient(135deg, #ef4444, #dc2626); box-shadow: 0 8px 24px rgba(239,68,68,.4); }
        .result-icon.pending { background: linear-gradient(135deg, #f59e0b, #d97706); box-shadow: 0 8px 24px rgba(245,158,11,.4); }
        .payment-result-content h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 8px; color: var(--slate-900); }
        .payment-result-content .result-subtitle { font-size: .86rem; color: var(--slate-500); margin-bottom: 22px; line-height: 1.55; }
        .result-details { background: var(--slate-50); border-radius: 12px; padding: 16px 20px; margin-bottom: 22px; text-align: left; border: 1px solid var(--slate-200); }
        .result-details .detail-row { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; padding: 9px 0; font-size: .82rem; border-bottom: 1px dashed var(--slate-200); }
        .result-details .detail-row:last-child { border-bottom: none; }
        .result-details .detail-row span { color: var(--slate-400); flex-shrink: 0; }
        .result-details .detail-row strong { color: var(--slate-900); font-weight: 600; text-align: right; word-break: break-all; font-family: 'JetBrains Mono',monospace; font-size: .78rem; max-width: 65%; }
        .result-details .detail-row strong.status-success { color: #10b981; }
        .result-details .detail-row strong.status-failed { color: #ef4444; }
        .result-details .detail-row strong.status-pending { color: #f59e0b; }
        .result-actions { display: flex; gap: 12px; }
        .result-actions button { flex: 1; padding: 12px; border-radius: 999px; font-weight: 600; cursor: pointer; border: none; font-size: .92rem; }
        .result-actions .btn-result-primary { background: var(--brand-600); color: #fff; box-shadow: 0 4px 12px rgba(99,102,241,.3); }
        .result-actions .btn-result-primary:hover { background: var(--brand-700); }

        /* ⭐ 预览确认弹窗内容 */
        .preview-confirm-content {
            background: #fff;
            border-radius: 20px;
            padding: 28px;
            box-shadow: 0 24px 48px -6px rgba(0,0,0,.2);
            max-width: 500px;
            width: 90%;
            max-height: 90%;
            overflow-y: auto;
            animation: modalIn .3s cubic-bezier(.4,0,.2,1);
        }
        .preview-confirm-content .modal-header h3 { font-size: 1.15rem; font-weight: 700; }
        .preview-plan-change {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            padding: 18px 16px;
            background: linear-gradient(135deg, #eef2ff, #f5f3ff);
            border-radius: 14px;
            margin-bottom: 20px;
            border: 1px solid var(--brand-100);
        }
        .preview-plan-from, .preview-plan-to {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            flex: 1;
            min-width: 0;
        }
        .preview-plan-label {
            font-size: .68rem;
            color: var(--slate-500);
            font-weight: 500;
            letter-spacing: .5px;
        }
        .preview-plan-name {
            font-size: .9rem;
            font-weight: 700;
            color: var(--slate-900);
            text-align: center;
            word-break: break-all;
        }
        .preview-arrow {
            color: var(--brand-500);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .preview-details {
            background: var(--slate-50);
            border-radius: 14px;
            padding: 8px 18px;
            margin-bottom: 22px;
            border: 1px solid var(--slate-200);
        }
        .preview-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 11px 0;
            font-size: .85rem;
            border-bottom: 1px dashed var(--slate-200);
        }
        .preview-row:last-child { border-bottom: none; }
        .preview-row > span { color: var(--slate-500); }
        .preview-row > strong {
            color: var(--slate-900);
            font-weight: 600;
            font-family: 'JetBrains Mono', monospace;
            font-size: .82rem;
            text-align: right;
        }
        .preview-row.preview-total-row {
            padding-top: 14px;
            margin-top: 4px;
            border-top: 2px solid var(--brand-100);
            border-bottom: none;
        }
        .preview-row.preview-total-row > span {
            color: var(--slate-900);
            font-weight: 600;
            font-size: .92rem;
        }
        .preview-row.preview-total-row > strong {
            color: var(--brand-600);
            font-size: 1.2rem;
            font-weight: 800;
        }
        .preview-actions {
            display: flex;
            gap: 12px;
        }
        .preview-actions button {
            flex: 1;
            padding: 13px;
            border-radius: 999px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            font-size: .9rem;
            transition: all .2s;
        }
        .btn-preview-cancel {
            background: var(--slate-100);
            color: var(--slate-500);
        }
        .btn-preview-cancel:hover { background: var(--slate-200); }
        .btn-preview-confirm {
            background: linear-gradient(135deg, var(--brand-600), var(--violet-500));
            color: #fff;
            box-shadow: 0 4px 12px rgba(99,102,241,.3);
        }
        .btn-preview-confirm:hover { filter: brightness(1.05); transform: translateY(-1px); box-shadow: 0 6px 16px rgba(99,102,241,.4); }
        .btn-preview-confirm:disabled { background: #cbd5e1; cursor: not-allowed; box-shadow: none; transform: none; }

        /* ============ ⭐ 通用确认弹框（替代原生 confirm） ============ */
        #confirmModal {
            display: none;
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(15,23,42,.55);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            z-index: 500;
            justify-content: center;
            align-items: center;
            padding: 20px;
            animation: fadeIn .2s ease-out;
        }
        #confirmModal.active { display: flex; }
        .confirm-modal-content {
            background: #fff;
            border-radius: 22px;
            padding: 30px 28px 24px;
            box-shadow: 0 24px 48px -6px rgba(0,0,0,.2);
            max-width: 460px;
            width: 100%;
            max-height: 90%;
            overflow-y: auto;
            text-align: center;
            animation: modalIn .3s cubic-bezier(.4,0,.2,1);
        }
        .confirm-icon {
            width: 64px; height: 64px; border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 16px; font-size: 1.5rem; color: #fff;
        }
        .confirm-icon.warning { background: linear-gradient(135deg,#f59e0b,#d97706); box-shadow: 0 8px 20px rgba(245,158,11,.35); }
        .confirm-icon.danger  { background: linear-gradient(135deg,#ef4444,#dc2626); box-shadow: 0 8px 20px rgba(239,68,68,.35); }
        .confirm-icon.info    { background: linear-gradient(135deg,#6366f1,#8b5cf6); box-shadow: 0 8px 20px rgba(99,102,241,.35); }
        .confirm-modal-content h3 { font-size: 1.15rem; font-weight: 700; color: var(--slate-900); margin-bottom: 8px; }
        .confirm-desc { font-size: .86rem; color: var(--slate-500); line-height: 1.6; margin-bottom: 18px; }
        .confirm-details {
            background: var(--slate-50);
            border: 1px solid var(--slate-200);
            border-radius: 14px;
            padding: 4px 16px;
            margin-bottom: 16px;
            text-align: left;
        }
        .confirm-details .cd-row {
            display: flex; justify-content: space-between; align-items: flex-start;
            gap: 12px; padding: 10px 0; font-size: .82rem;
            border-bottom: 1px dashed var(--slate-200);
        }
        .confirm-details .cd-row:last-child { border-bottom: none; }
        .confirm-details .cd-row > span { color: var(--slate-500); flex-shrink: 0; }
        .confirm-details .cd-row > strong {
            color: var(--slate-900); font-weight: 600; text-align: right;
            word-break: break-all; font-family: 'JetBrains Mono', monospace; font-size: .78rem;
        }
        .confirm-notice {
            display: flex; gap: 10px; text-align: left;
            background: #fff7ed; border: 1px solid #fed7aa; color: #9a3412;
            border-radius: 12px; padding: 12px 14px;
            font-size: .78rem; line-height: 1.7; margin-bottom: 22px;
            white-space: pre-line;
        }
        .confirm-notice i { margin-top: 3px; flex-shrink: 0; }
        .confirm-actions { display: flex; gap: 12px; }
        .confirm-actions button {
            flex: 1; padding: 12px; border-radius: 999px; border: none;
            font-weight: 600; font-size: .9rem; cursor: pointer; transition: all .2s;
        }
        .btn-confirm-cancel { background: var(--slate-100); color: var(--slate-500); }
        .btn-confirm-cancel:hover { background: var(--slate-200); color: var(--slate-700); }
        .btn-confirm-ok {
            background: linear-gradient(135deg, var(--brand-600), var(--violet-500));
            color: #fff; box-shadow: 0 4px 12px rgba(99,102,241,.3);
        }
        .btn-confirm-ok:hover { filter: brightness(1.05); transform: translateY(-1px); }
        .btn-confirm-ok.danger {
            background: linear-gradient(135deg, #ef4444, #dc2626);
            box-shadow: 0 4px 12px rgba(239,68,68,.3);
        }
        .btn-confirm-ok:disabled { opacity: .6; cursor: not-allowed; transform: none; box-shadow: none; }

        @media (max-width: 1200px) { .pricing-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 640px) { .pricing-grid { grid-template-columns: 1fr; } }
        @media (max-width: 900px) {
            .right-panel { width: 360px; }
            .right-panel.log-hidden { width: 50px; min-width: 50px; }
            .left-content { padding: 28px 20px 48px; }
            .navbar { padding: 0 20px; }
            .page-hero h1 { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .split-layout { flex-direction: column; }
            .left-panel { height: 60vh; border-right: none; border-bottom: 1px solid var(--slate-200); }
            .right-panel { width: 100%; height: 40vh; }
            .right-panel.log-hidden { width: 100%; min-width: unset; height: 48px; }
            .right-panel.log-hidden .api-log { display: none !important; }
            .navbar { padding: 0 14px; height: 56px; }
            .navbar .nav-links { display: none; }
            .left-content { padding: 20px 14px 40px; }
            .page-hero h1 { font-size: 1.7rem; }
            .modal-body { flex-direction: column; }
            .order-summary-column { padding: 16px; }
        }