:root {
            --primary: #2762b7;
            --pink: #ff758c;
            --red: #ff4d4f;
            --bg: #f4f6f9;
            --surface: #ffffff;
            --text-main: #222222;
            --text-muted: #777777;
            --border: #e6e6e6;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: "PingFang TC", "Helvetica Neue", Helvetica, Arial, "Microsoft JhengHei", sans-serif;
            font-size: 20px; 
            font-weight: 400; 
            color: var(--text-main);
            background-color: var(--bg);
            background-image: 
                radial-gradient(circle at 85% 15%, rgba(255,117,140,0.2) 0%, transparent 35%),
                radial-gradient(circle at 15% 85%, rgba(39,98,183,0.15) 0%, transparent 40%),
                radial-gradient(circle at 50% 50%, rgba(255,255,255,0.8) 0%, rgba(244,246,249,0.4) 100%),
                linear-gradient(135deg, rgba(234,242,252,0.8) 0%, rgba(255,240,243,0.8) 100%);
            background-attachment: fixed;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }
        body::before, body::after {
            content: "";
            position: absolute;
            border-radius: 50%;
            z-index: -1;
            filter: blur(40px);
        }
        body::before {
            width: 300px;
            height: 300px;
            background: rgba(255, 117, 140, 0.15);
            top: -100px;
            right: -50px;
        }
        body::after {
            width: 400px;
            height: 400px;
            background: rgba(39, 98, 183, 0.1);
            bottom: -150px;
            left: -100px;
        }
        a { text-decoration: none; color: var(--primary); }
        .simple-header {
            background: transparent;
            padding: 20px 0;
            text-align: center;
        }
        .logo__img__main {
            display: inline-flex;
            flex-direction: column;
            align-items: center;
            text-decoration: none;
            gap: 4px;
        }
        .logo__img__main img {
            height: 80px; 
            object-fit: contain;
        }
        .logo-sub {
            font-size: 15px; 
            color: var(--text-muted);
            letter-spacing: 1px;
            margin-top: 5px;
        }
        .login-container {
            flex: 1;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        .login-wrapper {
            position: relative;
            width: 100%;
            max-width: 440px;
            margin-top: 2px; 
        }
        .login-card {
            background: var(--surface);
            border-radius: 12px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.06);
            padding: 40px 35px;
            position: relative;
            z-index: 10;
        }
        .mascot-peeking {
            position: absolute;
            top: -97px;  
            right: 20px; 
            width: 140px;
            height: auto;
            z-index: -1; 
        }
        .login-title {
            font-size: 22px;
            font-weight: bold;
            color: var(--text-main);
            margin-bottom: 25px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .login-title::before {
            content: "";
            display: block;
            width: 6px;
            height: 24px;
            background: var(--pink);
            border-radius: 4px;
        }
        .form-group {
            margin-bottom: 24px;
        }
        .form-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 8px;
            font-size: 15px;
            font-weight: normal;
        }
        .form-header a {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: normal;
        }
        .form-header a:hover { color: var(--primary); text-decoration: underline; }
        .input-wrap {
            position: relative;
        }
        .input-wrap input {
            width: 100%;
            padding: 14px 16px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 16px;
            outline: none;
            transition: border-color 0.2s;
            font-family: inherit;
            box-sizing: border-box;
        }
        .input-wrap input:focus {
            border-color: var(--primary);
        }
        .pwd-toggle {
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: #ccc;
            cursor: pointer;
            font-size: 20px;
        }
        .btn-login {
            width: 100%;
            background: #ff9fb0; 
            color: #fff;
            border: none;
            padding: 16px;
            font-size: 18px;
            font-weight: bold;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
            margin-bottom: 10px;
            letter-spacing: 2px;
            box-sizing: border-box;
        }
        .btn-login:hover { background: var(--pink); }
        .quick-links {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-bottom: 30px;
            font-size: 16px;
        }
        .divider {
            display: flex;
            align-items: center;
            text-align: center;
            color: var(--text-muted);
            font-size: 13px;
            margin-bottom: 30px;
        }
        .divider::before, .divider::after {
            content: '';
            flex: 1;
            border-bottom: 1px solid var(--border);
        }
        .divider::before { margin-right: 15px; }
        .divider::after { margin-left: 15px; }
        .social-login {
            display: flex;
            justify-content: center;
            gap: 20px;
        }
        .social-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            border: 1px solid var(--border);
            background: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            cursor: pointer;
            transition: box-shadow 0.2s;
        }
        .social-btn:hover {
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        }
        .login-footer {
            text-align: center;
            padding: 20px;
            font-size: 13px;
            color: var(--text-muted);
        }
        @media(max-width: 480px) {
            .login-card { padding: 30px 20px; }
            .mascot-peeking { width: 110px; top: -75px; right: 10px; }
        }