:root:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            --aisitex-bg: #0B0E14;
            --aisitex-card-bg: #131822;
            --aisitex-card-hover: #1a2230;
            --aisitex-primary: #1677FF;
            --aisitex-secondary: #FF3B30;
            --aisitex-text: #F0F2F5;
            --aisitex-text-muted: #8A94A6;
            --aisitex-border: rgba(255, 255, 255, 0.08);
            --aisitex-radius: 16px;
        }
*:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
body:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background-color: var(--aisitex-bg);
            color: var(--aisitex-text);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            overflow-x: hidden;
        }
/* 共享頭部樣式複用 */
.aisitex-nav-overlay:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.6);
            z-index: 999;
        }
/* 頁面專屬樣式 */
.aisitex-account-main:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            padding-top: 120px;
            min-height: calc(100vh - 100px);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            position: relative;
            background-image: radial-gradient(circle at 50% 20%, rgba(22, 119, 255, 0.08) 0%, transparent 60%);
            padding-bottom: 60px;
        }
.aisitex-container:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
.aisitex-account-layout:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }
/* 左側產品視覺與情境導覽 */
.aisitex-account-intro:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
.aisitex-badge-tag:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(22, 119, 255, 0.12);
            color: var(--aisitex-primary);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            width: fit-content;
            border: 1px solid rgba(22, 119, 255, 0.3);
        }
.aisitex-account-intro h1:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 44px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--aisitex-text);
        }
.aisitex-account-intro h1 span:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            color: var(--aisitex-primary);
        }
.aisitex-account-intro p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 16px;
            color: var(--aisitex-text-muted);
            line-height: 1.7;
        }
.aisitex-preview-card:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: var(--aisitex-card-bg);
            border: 1px solid var(--aisitex-border);
            border-radius: var(--aisitex-radius);
            padding: 24px;
            margin-top: 12px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0,0,0,0.4);
        }
.aisitex-preview-card img:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            width: 100%;
            height: auto;
            border-radius: 8px;
            display: block;
            opacity: 0.9;
        }
/* 右側互動表單卡片 */
.aisitex-auth-card:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: var(--aisitex-card-bg);
            border: 1px solid var(--aisitex-border);
            border-radius: var(--aisitex-radius);
            padding: 40px;
            box-shadow: 0 24px 48px rgba(0,0,0,0.5);
            position: relative;
        }
.aisitex-auth-tabs:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: flex;
            border-bottom: 1px solid var(--aisitex-border);
            margin-bottom: 28px;
            gap: 32px;
        }
.aisitex-auth-tab:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: none;
            border: none;
            color: var(--aisitex-text-muted);
            font-size: 18px;
            font-weight: 600;
            padding-bottom: 12px;
            cursor: pointer;
            position: relative;
            transition: color 0.2s;
        }
.aisitex-auth-tab.active:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            color: var(--aisitex-text);
        }
.aisitex-auth-tab.active:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *))::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--aisitex-primary);
        }
.aisitex-form-group:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            margin-bottom: 20px;
        }
.aisitex-form-label:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--aisitex-text);
            margin-bottom: 8px;
        }
.aisitex-form-input:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            width: 100%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--aisitex-border);
            border-radius: 8px;
            padding: 12px 16px;
            color: var(--aisitex-text);
            font-size: 15px;
            transition: border-color 0.2s, background 0.2s;
        }
.aisitex-form-input:focus:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            outline: none;
            border-color: var(--aisitex-primary);
            background: rgba(22, 119, 255, 0.04);
        }
.aisitex-form-error:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 13px;
            color: var(--aisitex-secondary);
            margin-top: 6px;
            display: none;
        }
.aisitex-form-error.show:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: block;
        }
.aisitex-form-btn:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            width: 100%;
            background: var(--aisitex-primary);
            color: #fff;
            border: none;
            border-radius: 8px;
            padding: 14px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(22, 119, 255, 0.3);
            transition: opacity 0.2s, transform 0.2s;
            margin-top: 8px;
        }
.aisitex-form-btn:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            opacity: 0.95;
            transform: translateY(-1px);
        }
.aisitex-form-btn:disabled:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }
.aisitex-global-message:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            padding: 12px 16px;
            border-radius: 8px;
            font-size: 14px;
            margin-bottom: 20px;
            display: none;
        }
.aisitex-global-message.error:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: rgba(255, 59, 48, 0.12);
            border: 1px solid rgba(255, 59, 48, 0.3);
            color: #ff6b65;
            display: block;
        }
.aisitex-global-message.success:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: rgba(52, 199, 89, 0.12);
            border: 1px solid rgba(52, 199, 89, 0.3);
            color: #34c759;
            display: block;
        }
/* 已登入狀態視圖 */
.aisitex-session-view:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: none;
            flex-direction: column;
            align-items: center;
            text-align: center;
            padding: 20px 0;
        }
.aisitex-session-avatar:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            width: 72px;
            height: 72px;
            background: rgba(22, 119, 255, 0.15);
            border: 2px solid var(--aisitex-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--aisitex-primary);
            font-weight: 700;
            margin-bottom: 20px;
        }
.aisitex-session-title:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }
.aisitex-session-user:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 15px;
            color: var(--aisitex-text-muted);
            margin-bottom: 24px;
            background: rgba(255,255,255,0.03);
            padding: 6px 16px;
            border-radius: 20px;
            border: 1px solid var(--aisitex-border);
        }
.aisitex-session-actions:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: flex;
            gap: 16px;
            width: 100%;
        }
.aisitex-btn-secondary:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            flex: 1;
            background: rgba(255, 255, 255, 0.06);
            color: var(--aisitex-text);
            border: 1px solid var(--aisitex-border);
            border-radius: 8px;
            padding: 12px;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            text-decoration: none;
            transition: background 0.2s;
        }
.aisitex-btn-secondary:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: rgba(255, 255, 255, 0.1);
        }
.aisitex-btn-danger:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            flex: 1;
            background: rgba(255, 59, 48, 0.12);
            color: var(--aisitex-secondary);
            border: 1px solid rgba(255, 59, 48, 0.3);
            border-radius: 8px;
            padding: 12px;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: background 0.2s;
        }
.aisitex-btn-danger:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: rgba(255, 59, 48, 0.2);
        }
.aisitex-demo-notice:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            margin-top: 24px;
            font-size: 13px;
            color: var(--aisitex-text-muted);
            text-align: center;
            border-top: 1px solid var(--aisitex-border);
            padding-top: 16px;
        }
/* 頁腳 */
/* 響應式斷點適配 */
@media (max-width: 960px) {.aisitex-account-layout:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                grid-template-columns: 1fr;
                gap: 36px;
            }
.aisitex-nav-container.active:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                transform: translateY(0);
            }
.aisitex-menu-toggle.active span:nth-child(1):not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                transform: translateY(8px) rotate(45deg);
            }
.aisitex-menu-toggle.active span:nth-child(2):not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                opacity: 0;
            }
.aisitex-menu-toggle.active span:nth-child(3):not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                transform: translateY(-8px) rotate(-45deg);
            }
.aisitex-account-intro h1:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                font-size: 32px;
            }}

.aisitex-header {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #F0F2F5;
}

.aisitex-header, .aisitex-header *{
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

.aisitex-header{
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            background: rgba(11, 14, 20, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 5%;
        }

.aisitex-header .aisitex-brand{
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: #F0F2F5;
            font-weight: 700;
            font-size: 1.25rem;
        }

.aisitex-header .aisitex-brand img{
            width: 32px;
            height: 32px;
            object-fit: contain;
        }

.aisitex-header .aisitex-nav-container{
            display: flex;
            align-items: center;
            gap: 40px;
        }

.aisitex-header .aisitex-nav-menu{
            display: flex;
            align-items: center;
            gap: 32px;
        }

.aisitex-header .aisitex-nav-link{
            text-decoration: none;
            color: #8A94A6;
            font-size: 0.95rem;
            font-weight: 500;
            transition: color 0.2s ease;
            position: relative;
        }

.aisitex-header .aisitex-nav-link:hover, .aisitex-header .aisitex-nav-link.active{
            color: #F0F2F5;
        }

.aisitex-header .aisitex-nav-link.active::after{
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: #1677FF;
        }

.aisitex-header .aisitex-header-cta{
            background: #1677FF;
            color: #fff;
            padding: 8px 20px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            transition: background 0.2s ease, transform 0.2s ease;
        }

.aisitex-header .aisitex-header-cta:hover{
            background: #4096ff;
            transform: translateY(-1px);
        }

.aisitex-header .aisitex-menu-toggle{
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 30px;
            height: 24px;
            position: relative;
            z-index: 1001;
        }

.aisitex-header .aisitex-menu-toggle span{
            display: block;
            width: 100%;
            height: 2px;
            background: #F0F2F5;
            position: absolute;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

.aisitex-header .aisitex-menu-toggle span:nth-child(1){ top: 0; }

.aisitex-header .aisitex-menu-toggle span:nth-child(2){ top: 11px; }

.aisitex-header .aisitex-menu-toggle span:nth-child(3){ top: 22px; }

.aisitex-header .aisitex-menu-toggle.active span:nth-child(1){
            transform: translateY(11px) rotate(45deg);
        }

.aisitex-header .aisitex-menu-toggle.active span:nth-child(2){
            opacity: 0;
        }

.aisitex-header .aisitex-menu-toggle.active span:nth-child(3){
            transform: translateY(-11px) rotate(-45deg);
        }

@media (max-width: 768px){.aisitex-header .aisitex-nav-menu{
                position: fixed;
                top: 72px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 72px);
                background: #0B0E14;
                flex-direction: column;
                justify-content: flex-start;
                padding: 40px 24px;
                transition: left 0.3s ease;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                z-index: 999;
            }

.aisitex-header .aisitex-nav-menu.active{
                left: 0;
            }

.aisitex-header .aisitex-menu-toggle{
                display: block;
            }

.aisitex-header .aisitex-header-cta{
                display: none;
            }

.aisitex-header .aisitex-nav-overlay.active{
                display: block;
            }}

.aisitex-footer {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #F0F2F5;
}

.aisitex-footer, .aisitex-footer *{
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

.aisitex-footer .aisitex-brand{
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: #F0F2F5;
            font-weight: 700;
            font-size: 1.25rem;
        }

.aisitex-footer .aisitex-brand img{
            width: 32px;
            height: 32px;
            object-fit: contain;
        }

.aisitex-footer .aisitex-container{
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

.aisitex-footer{
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 60px 0 40px;
            background: #07090D;
        }

.aisitex-footer .aisitex-footer-grid{
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

.aisitex-footer .aisitex-footer-brand p{
            color: #8A94A6;
            font-size: 0.95rem;
            margin-top: 16px;
            line-height: 1.5;
        }

.aisitex-footer .aisitex-footer-col h4{
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 20px;
            color: #F0F2F5;
        }

.aisitex-footer .aisitex-footer-col ul{
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

.aisitex-footer .aisitex-footer-col a{
            text-decoration: none;
            color: #8A94A6;
            font-size: 0.9rem;
            transition: color 0.2s ease;
        }

.aisitex-footer .aisitex-footer-col a:hover{
            color: #F0F2F5;
        }

.aisitex-footer .aisitex-footer-bottom{
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #8A94A6;
            font-size: 0.85rem;
        }

@media (max-width: 1024px){.aisitex-footer .aisitex-footer-grid{
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }}

@media (max-width: 768px){.aisitex-footer .aisitex-footer-grid{
                grid-template-columns: 1fr;
            }}