:root {
            --bg: #fafaf8;
            --surface: #ffffff;
            --border: #e8e8e4;
            --border-light: #f0f0ec;
            --text-primary: #0d0d0c;
            --text-secondary: #5c5c58;
            --text-muted: #a0a09a;
            --accent: #1a6b3c;
            --accent-light: #edf7f1;
            --accent-hover: #155730;
            --radius: 14px;
            --radius-sm: 9px;
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.1);
        }

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

        html {
            font-size: 16px;
        }

        body {
            font-family: "Geist", sans-serif;
            background: var(--bg);
            color: var(--text-primary);
            -webkit-font-smoothing: antialiased;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(250, 250, 248, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
        }

        .nav-inner {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 32px;
            display: flex;
            align-items: center;
            height: 62px;
            gap: 32px;
        }

        .nav-logo {
            font-size: 19px;
            font-weight: 800;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 7px;
            flex-shrink: 0;
        }

        .nav-logo-mark {
            width: 28px;
            height: 28px;
            background: var(--text-primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .nav-logo-mark svg {
            width: 14px;
            height: 14px;
            fill: #fff;
        }

        .auth-page {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 100px 32px 60px;
            gap: 80px;
        }

        .auth-left {
            flex: 1;
            max-width: 420px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .auth-left-title {
            font-size: 46px;
            font-weight: 800;
            letter-spacing: -2px;
            line-height: 1.05;
            margin-bottom: 16px;
        }

        .auth-left-title em {
            font-family: "Instrument Serif", serif;
            font-style: italic;
            font-weight: 400;
            color: var(--accent);
        }

        .auth-left-sub {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 36px;
        }

        .auth-feature {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            margin-bottom: 18px;
        }

        .auth-feature-icon {
            width: 36px;
            height: 36px;
            border-radius: 9px;
            background: var(--accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: var(--accent);
            flex-shrink: 0;
            margin-top: 1px;
        }

        .auth-feature-title {
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 3px;
        }

        .auth-feature-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .auth-right {
            width: 100%;
            max-width: 420px;
        }

        .auth-card {
            background: var(--surface);
            border: 1.5px solid var(--border);
            border-radius: 20px;
            padding: 40px;
            box-shadow: var(--shadow-lg);
            animation: slideUp 0.4s ease;
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .auth-card-title {
            font-size: 24px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 6px;
        }

        .auth-card-sub {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 28px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-label {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            display: block;
            letter-spacing: -0.1px;
        }

        .form-input {
            width: 100%;
            font-size: 14px;
            font-family: "Geist", sans-serif;
            background: var(--bg);
            border: 1.5px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 11px 14px;
            color: var(--text-primary);
            outline: none;
            transition: border-color 0.2s;
        }

        .form-input:focus {
            border-color: var(--text-primary);
            background: var(--surface);
        }

        .form-input::placeholder {
            color: var(--text-muted);
        }

        .input-icon-wrap {
            position: relative;
        }

        .input-icon-wrap .form-input {
            padding-left: 40px;
        }

        .input-icon-wrap .input-icon {
            position: absolute;
            left: 13px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 14px;
        }

        .form-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 18px;
        }

        .form-check {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            cursor: pointer;
        }

        .form-check input {
            accent-color: var(--accent);
        }

        .form-link {
            font-size: 13px;
            color: var(--accent);
            text-decoration: none;
            font-weight: 600;
        }

        .form-link:hover {
            text-decoration: underline;
        }

        .btn-submit {
            width: 100%;
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            background: var(--text-primary);
            border: none;
            padding: 13px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all 0.2s;
            font-family: "Geist", sans-serif;
            letter-spacing: -0.2px;
            margin-bottom: 16px;
        }

        .btn-submit:hover {
            background: #2a2a28;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .divider {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .divider-line {
            flex: 1;
            height: 1px;
            background: var(--border);
        }

        .divider-text {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 600;
        }

        .btn-social {
            width: 100%;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            background: var(--surface);
            border: 1.5px solid var(--border);
            padding: 11px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all 0.15s;
            font-family: "Geist", sans-serif;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            margin-bottom: 10px;
            text-decoration: none;
        }

        .btn-social:hover {
            border-color: var(--text-primary);
        }

        .auth-footer {
            text-align: center;
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 22px;
        }

        .auth-footer a {
            color: var(--accent);
            font-weight: 700;
            text-decoration: none;
        }

        .auth-footer a:hover {
            text-decoration: underline;
        }

        @media (max-width: 800px) {
            .auth-left {
                display: none;
            }

            .auth-page {
                justify-content: center;
            }
        }

        @media (max-width: 480px) {
            .auth-card {
                padding: 28px 20px;
            }

            .auth-page {
                padding: 80px 16px 40px;
            }
        }

        @media (max-width: 800px) {
            .auth-left {
                display: none;
            }

            .auth-page {
                justify-content: center;
            }
        }

        @media (max-width: 600px) {
            .nav-inner {
                padding: 0 12px;
            }

            .auth-page {
                padding: 80px 12px 40px;
            }
        }

        @media (max-width: 480px) {
            .auth-card {
                padding: 24px 16px;
            }

            .auth-page {
                padding: 76px 10px 32px;
            }

            .auth-card-title {
                font-size: 20px;
            }

            .btn-submit {
                padding: 12px;
                font-size: 14px;
            }
        }