body {
            background: linear-gradient(135deg, #eaf6ef 0%, #fff9ec 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .login-card {
            width: 380px;
            max-width: 100%;
            background: #fff;
            border-radius: 22px;
            padding: 34px 30px 26px;
            box-shadow: 0 18px 50px rgba(31,122,68,.22);
            text-align: center;
            /* border-top: 6px solid var(--green); */
        }
        .login-logo {
            font-size: 44px;
            margin-bottom: 6px;
        }
        .login-title {
            margin: 0;
            color: var(--green-d);
            font-size: 26px;
            font-weight: 800;
        }
        .login-sub {
            margin: 6px 0 18px;
            color: var(--soft);
            font-size: 16px;
        }
        .linput {
            display: block;
            width: 100%;
            box-sizing: border-box;
            border: 2px solid var(--line);
            border-radius: 12px;
            padding: 11px 14px;
            margin: 10px 0;
            font-size: 18px;
            font-family: inherit;
            background: #fbfaf6;
            color: var(--ink);
        }
        .linput:focus {
            outline: none;
            border-color: var(--green);
            background: #fff;
        }
        .lerr {
            color: var(--red);
            font-size: 15px;
            min-height: 18px;
            margin: 2px 0;
            text-align: left;
        }
        .lbtn {
            display: block;
            width: 100%;
            box-sizing: border-box;
            background: linear-gradient(135deg, var(--green) 0%, #3fae6e 100%);
            color: #fff;
            border: none;
            border-radius: 12px;
            padding: 12px;
            font-size: 19px;
            font-weight: 800;
            cursor: pointer;
            font-family: inherit;
            margin-top: 6px;
            letter-spacing: 6px;
        }
        .lbtn:hover {
            filter: brightness(1.05);
        }
        .l-links {
            margin-top: 14px;
            font-size: 15.5px;
        }
        .llink {
            color: var(--green-d);
            cursor: pointer;
            text-decoration: underline;
            margin: 0 8px;
        }
        .llink:hover {
            color: var(--orange);
        }
        .default-account {
            margin-top: 16px;
            font-size: 14px;
            color: #b0a89a;
            background: var(--cream);
            padding: 10px;
            border-radius: 8px;
        }

        /* ===== 手机端适配 ===== */
        @media(max-width:480px) {
            .login-card {
                padding: 24px 20px 20px;
                border-radius: 16px;
            }
            .login-logo {
                font-size: 36px;
            }
            .login-title {
                font-size: 22px;
            }
            .login-sub {
                font-size: 14px;
            }
            .linput {
                font-size: 16px; /* 防止 iOS 自动放大 */
            }
        }